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1.
Biomédica (Bogotá) ; Biomédica (Bogotá);44(supl.1): 11-17, mayo 2024. tab, graf
Artigo em Inglês | LILACS, COLNAL | ID: biblio-1574110

RESUMO

Introduction. Stroke in young individuals is becoming increasingly prevalent worldwide. Its causes can vary widely, so a thorough investigation by a multidisciplinary team is needed. Pinpointing the precise underlying pathology responsible for the stroke yields benefits for patients, particularly in recurrent events. Case presentation. A 38-year-old man presented to the emergency department with symptoms suggestive of stroke, including right hemiparesis, dysarthria, ataxic gait, and right central facial palsy. The brain magnetic resonance image revealed an ischemic lesion located in the left basal ganglia and near the corona radiata. Following an extensive workup, a diagnosis of nephrotic was reached. Histopathology and the exclusion of secondary causes confirmed primary membranous nephropathy as the underlying condition. The patient underwent treatment tailored to address the specific glomerulopathy, along with anticoagulation therapy and immunosuppression as per current guidelines. Subsequent assessments showed stabilization of renal function, resolution of the edema, and the absence of new thromboembolic events during follow-up. Conclusion. The nephrotic syndrome should be recognized as a potential underlying cause of stroke in young patients and, therefore, it should be included in the differential diagnosis during the evaluation of patients with coagulopathies. Nephrotic syndrome screening may be done by conducting a simple urinalysis readily available in most healthcare facilities. This underlines the importance of considering renal pathology in the assessment of stroke etiologies, especially when coagulation abnormalities are present.


Introducción. Los eventos cerebrovasculares en los jóvenes son un problema creciente en todo el mundo. Su etiología puede ser variada y requieren un trabajo riguroso de un equipo multidisciplinario. La identificación de la enfermedad específica que conduce al ictus tiene un impacto beneficioso en los pacientes, especialmente en aquellos con eventos recurrentes. Presentación del caso. Se presenta el caso de un hombre de 38 años que acudió al servicio de urgencias con hemiparesia derecha, disartria, ataxia y parálisis facial central derecha. La resonancia magnética cerebral reveló una lesión isquémica localizada en los ganglios basales izquierdos, cerca de la corona radiada. Después de un estudio exhaustivo, se estableció el diagnóstico de síndrome nefrótico. No obstante, al analizar las características histopatológicas y descartar otras causas secundarias, el diagnóstico final fue una nefropatía membranosa primaria. El paciente recibió tratamiento específico para su glomerulopatía, anticoagulación e inmunosupresión según las guías vigentes. Durante el seguimiento, se encontró estabilización de la función renal, el edema se resolvió y no se identificó ningún nuevo evento tromboembólico. Conclusión. El síndrome nefrótico debe considerarse entre las posibles causas del ictus en pacientes jóvenes y debería tenerse en cuenta en los estudios de coagulopatías. El tamizaje de esta enfermedad requiere únicamente un uroanálisis, el cual está disponible en la mayoría de los centros de atención de salud.


Assuntos
Humanos , Infarto Cerebral , Adulto Jovem , Síndrome Nefrótica , Glomerulonefrite Membranosa , Acidente Vascular Cerebral
2.
Rev. inf. cient ; 103: e4511, 2024.
Artigo em Espanhol | LILACS, CUMED | ID: biblio-1560101

RESUMO

Introducción: El infarto cerebral isquémico (ICI) en adultos jóvenes ha emergido como un relevante problema de salud debido al incremento de su incidencia, alta mortalidad, larga duración del tiempo de la discapacidad y consecuencias sociales. Objetivo: Describir una aproximación al diagnóstico del infarto cerebral isquémico en adultos jóvenes sobre la base de la clasificación etiopatogénica, historia e investigaciones complementarias. Método: Se realizó una extensa revisión bibliográfica con el buscador Google Académico, en las bases de datos bibliográficas PubMed, SciELO y Medline, y con la búsqueda de palabras claves; siendo escogidos 32 artículos cuyo título y resumen se relacionaron con el tema de la presente revisión. Desarrollo: Los subtipos etiopatogénicos del infarto cerebral isquémico en adultos jóvenes difieren al compararlo con adultos mayores, y sus causas etiológicas son más variadas y heterogéneas. Los factores de riesgo, antecedentes patológicos personales y familiares, manifestaciones clínicas no neurológicas y neurológicas, permiten un acercamiento al diagnóstico, mientras que las investigaciones complementarias facilitan la confirmación del diagnóstico, la localización y tamaño del infarto isquémico, el establecimiento de la causa etiológica y el sustento de las decisiones terapéuticas. Consideraciones finales: La historia y manifestaciones clínicas obtenidas mediante el interrogatorio y examen físico, unido a las investigaciones complementarias, posibilita la aproximación al diagnóstico del subtipo etiopatogénico y a la causa del infarto cerebral isquémico en adultos jóvenes, lo que mejora las posibilidades de tratamiento del mismo.(AU)


Introduction: Ischemic stroke in young adults has emerged as a relevant health problem today due to its increased incidence, high mortality, the duration of the disability and social consequences. Objective: To describe an approach in diagnosis of ischemic stroke in young adults based on etiopathogenic classification, history and complementary investigations. Method: A wide-ranging bibliographic review was carried out using Google Scholar, searching in bibliographic databases like PubMed, SciELO and Medline, and searching different keywords; 32 articles were chosen in the process with title and abstract were linked with the subject of this review. Development: The etiopathogenic subtypes of ischemic stroke in young adults differ with regard to older adults, and its etiologic causes are more diverse and heterogeneous. Risk factors, personal and family pathological history, non-neurological and neurological clinical manifestations, allow an approach to diagnosis, while complementary investigations facilitate the confirmation of diagnosis, the location and size of the ischemic infarction, definition of the etiological cause and the support of therapeutic decisions. Final considerations: The history and clinical manifestations obtained through interrogation and physical examination, in association with complementary investigations, made it possible an approach to diagnosis of etiopathogenic subtype and the cause of ischemic brain infarction in young adults improving treatment possibilities.(AU)


Introdução: O acidente vascular cerebral (AVC) isquêmico em adultos jovens emergiu como um problema de saúde relevante devido à sua crescente incidência, elevada mortalidade, longa duração da incapacidade e consequências sociais. Objetivo: Descrever uma abordagem ao diagnóstico do AVC isquêmico em adultos jovens baseada na classificação etiopatogénica, na história e em exames complementares. Método: Foi realizado uma extensa revisão bibliográfica utilizando o motor de busca Google Scholar, as bases de dados bibliográficas PubMed, SciELO e Medline, e uma pesquisa por palavras-chave; foram selecionados 32 artigos cujo título e resumo estavam relacionados com o tema desta revisão. Desenvolvimento: Os subtipos etiopatogênicos do AVC isquêmico em adultos jovens diferem quando comparados aos adultos mais velhos, e suas causas etiológicas são mais variadas e heterogêneas. Os fatores de risco, os antecedentes patológicos pessoais e familiares, as manifestações clínicas não neurológicas e neurológicas permitem uma aproximação ao diagnóstico, enquanto as investigações complementares facilitam a confirmação do diagnóstico, a localização e o tamanho do infarto isquêmico, o estabelecimento da causa etiológica e o apoio às decisões terapêuticas. Considerações finais: A história e as manifestações clínicas obtidas por meio de questionamento e exame físico, juntamente com investigações complementares, permitem abordar o diagnóstico do subtipo etiopatogênico e a causa do AVC isquêmico em adultos jovens, melhorando as possibilidades de seu tratamento.(AU)


Assuntos
Humanos , Masculino , Feminino , Adulto , Infarto Cerebral/classificação , Infarto Cerebral/diagnóstico , Infarto Cerebral/etiologia , Fatores de Risco , Adulto Jovem
3.
Cambios rev. méd ; 22 (2), 2023;22(2): 693, 16 octubre 2023. ilus., tabs.
Artigo em Espanhol | LILACS | ID: biblio-1526579

RESUMO

INTRODUCCIÓN: La neurosífilis representa la infección del sistema nervioso central por la bacteria Treponema pallidum. Se han descrito complicaciones parenquimatosas y meningovasculares. La enfermedad cerebrovascular isquémica, puede ser la única manifestación de la neurosífilis y puede ocurrir en cualquier fase de la enfermedad. Un tratamiento oportuno lleva a una adecuada recuperación y prevención de complicaciones potencialmente mortales e incapacitantes. OBJETIVO: proporcionar una fuente de información actualizada como medio de consulta rápida para personal médico que trata a pacientes con neurosífilis. METODOLOGÍA: Estudio de revisión de 44 artículos y selección de 33 encontradas en la base de datos del motor PUBMED, Biblioteca Cochrane, portal BVS Ecuador, datos publicados en tesis de la Universidad Central del Ecuador y Pontificia Universidad Católica del Ecuador, cuyas fechas de publicación corresponden en su mayoría a los últimos 5 años, y pocos artículos de años previos que por su relevancia se mantuvieron, el criterio de búsqueda empleado consistió en documentos que contenían datos sobre epidemiología, fisiopatología, clínica, diagnóstico y tratamiento de enfermedad cerebrovascular isquémica como presentación de neurosífilis. CONCLUSIÓN: La sospecha clínica de neurosífilis en pacientes jóvenes con antecedente epidemiológico orienta a un diagnóstico oportuno y disminuye la mortalidad y complicaciones secundarias a un infarto cerebral.


INTRODUCTION: Neurosyphilis represents the infection of the central nervous system by the bacterium Treponema pallidum. Parenchymal and meningovascular complications have been described. Ischemic cerebrovascular disease can be the only manifestation of neurosyphilis and can occur at any stage of the disease. Timely treatment leads to adequate recovery and prevention of life-threatening and disabling complications. OBJECTIVE: To provide an up-to-date source information as a means of quick consultation for medical personnel treating patients with neurosyphilis. METHODOLOGY: Review study of 44 articles and selection of 33 found in the database of the PUBMED engine, Cochrane Library, BVS Ecuador portal, data published in theses of the Universidad Central del Ecuador and Pontificia Universidad Católica del Ecuador, whose publication dates they correspond mostly to the last 5 years, and few articles from previous years that due to their relevance remained, the search criteria used consisted of documents that contained data on the epidemiology, pathophysiology, clinic, diagnosis and treatment of ischemic cerebrovascular disease as a presentation of neurosyphilis. CONCLUSION: The clinical suspicion of neurosyphilis in young patients with an epidemiological history leads to a timely diagnosis and reduces mortality and complications secondary to a cerebral infarction.


Assuntos
Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Adulto Jovem , Penicilina G Procaína , Ceftriaxona , Sífilis , Líquido Cefalorraquidiano , AVC Isquêmico , Neurossífilis/tratamento farmacológico , Tabes Dorsal , Treponema pallidum , Infarto Cerebral , Equador , Imunocompetência , Antibacterianos
4.
Rev. méd. Chile ; 151(10): 1281-1287, oct. 2023. tab, ilus
Artigo em Espanhol | LILACS | ID: biblio-1565657

RESUMO

INTRODUCCIÓN: Las disecciones de arterias cervicales (DAC) son la primera causa de accidente cerebrovascular isquémico (ACVi) en personas jóvenes. Los factores asociados (FA) de ACVi y la relación temporal con la DAC no están bien caracterizados. Tampoco disponemos de una clasificación clínico-radio-lógica que permita conocer el riesgo de ACVi. OBJETIVO: Describir frecuencia y FA y temporalidad de los ACVi en pacientes con DAC. MÉTODOS: Estudio prospectivo de pacientes mayores de 18 años hospitalizados por una DAC carotidea y/o vertebral entre agosto de 2009 y junio de 2017. Las DAC se diagnosticaron clínico-radiológicamente y los ACVi con imagen con infarto. Se utilizo la Clasificación de Borgess para caracterizar radiológicamente las DAC. Se utilizaron análisis de regresión logística uni y multivariable para evaluar las características clínico-radiológicas y los FA. RESULTADOS: 163 pacientes con 182 DAC (60% vertebrales y 40% carotídeas). 73 pacientes (44,8%) tuvieron un ACVi 28 de 68 pacientes (41,2%) tuvieron simultáneamente síntomas de disección y de isquemia. 60 de 68 pacientes (88%) presentan síntomas de isquemia durante la primera semana. FR significativamente asociados a ACVi: Borgess tipo IB (p = 0,001; OR: 4,1; IC: 1,8-9,3), sexo masculino (p < 0,001; OR: 0,2; IC: 0,06-0,8) y anticonceptivos orales (p = 0,02; OR: 0,2; IC: 0,06-0,8). CONCLUSIÓN: Ocurre aproximadamente en la mitad de los pacientes, en su mayoría dentro de la primera semana, no es la forma habitual de presentación inicial y no se relaciona con el tipo de arteria disecada. El principal FA para desarrollar un ACVi fue la oclusión arterial (Borgess tipo IB).


INTRODUCTION: Cervical artery dissections (CAD) are the leading cause of ischemic stroke (CVA) in young people. The risk factors for stroke and the temporal relationship with CAD are not well characterized. Nor do we have a clinical-radiological classification that allows knowing the risk of stroke. OBJECTIVE: To describe the associated factors and temporality of ACVi in patients with CAD. METHODS: We performed a prospective study that included patients over 18 years of age, hospitalized for carotid and/or vertebral CAD between August 2009 and June 2017. CAD cases were diagnosed clinically and radiologically; ACVi was diagnosed when the imaging study demonstrated infarction. The Borgess Classification was used to characterize the CAD radiologically. For correlation studies, we used univariate and multivariate logistic regression analyses. RESULTS: We analyzed 163 patients with 182 CAD (60% vertebral and 40% carotid). 28 of 68 patients (41.2%) simultaneously had symptoms of dissection and ischemia. 60 of 68 patients (88%) presented symptoms of ischemia during the first week. CAD: Borgess type IB (p = 0.001; OR: 4.1; CI: 1.8-9.3), male (p < 0.001; OR: 0.2; CI: 0.06- 0.8) were significantly associated with ischemic strokes and oral contraceptives (p = 0.02; OR: 0.2; CI: 0.06-0.8). CONCLUSION: Stroke associated with CAD has a relatively low frequency. It is not related to the type of dissected artery. It mainly occurs not simultaneously with CAD and within the first week. The main associated factor for developing a stroke is arterial occlusion (Borgess type IB).1,8-9,3), male sex (p < 0.001; OR: 0.2; CI: 0.06-0.8) and oral contraceptives (p = 0.02; OR: 0.2; CI: 0.06-0.8).


Assuntos
Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Idoso , Infarto Cerebral/etiologia , Infarto Cerebral/diagnóstico por imagem , Dissecação da Artéria Carótida Interna/complicações , Dissecação da Artéria Carótida Interna/diagnóstico por imagem , Dissecação da Artéria Vertebral/complicações , Dissecação da Artéria Vertebral/diagnóstico por imagem , Fatores de Tempo , Fatores Sexuais , Estudos Prospectivos , Fatores de Risco
5.
Artigo em Espanhol | LILACS, CUMED | ID: biblio-1508255

RESUMO

Introducción: El síndrome de Anton-Babinsky es un trastorno neuropsiquiátrico poco frecuente, que se manifiesta por anosognosia y ceguera cortical, debido a lesiones en las áreas visuales asociativas de la corteza occipital sin presentar afectación en la vía visual. En adultos mayores sus manifestaciones clínicas suelen ser atípicas y la valoración geriátrica integral permite orientar el diagnóstico, que se puede asociar con síndromes geriátricos. Objetivo: Describir las manifestaciones clínicas, síndromes geriátricos, paraclínicos y tratamiento de un paciente con Síndrome de Anton-Babinsky. Caso clínico: Paciente de 85 años, quien durante un postoperatorio inmediato de cirugía ocular (pterigión) presentó alteración fluctuante del estado de conciencia, alucinaciones visuales, disminución de la agudeza visual bilateral y anosognosia. La analítica sanguínea no reportó alteraciones y la tomografía computarizada de cráneo documentó isquemia occipital bilateral, se le diagnosticó síndrome de Anton-Babinsky. Conclusiones: El síndrome de Anton-Babinsky puede tener presentación atípica a través de síndromes geriátricos. La valoración geriátrica integral permite realizar un diagnóstico y manejo multicomponente oportuno con el objetivo de influir en el pronóstico tanto a corto como a largo plazo(AU)


Introduction: Anton-Babinski syndrome is a rare neuropsychiatric disorder, with a manifestation of anosognosia and cortical blindness, due to lesions in the associative visual areas of the occipital cortex without presenting visual pathway impairment. In elderly adults, its clinical manifestations are usually atypical and a comprehensive geriatric assessment allows to guide the diagnosis, which can be associated with geriatric syndromes. Objective: To describe the clinical manifestations, geriatric syndromes, paraclinical findings and treatment of a patient with Anton-Babinski syndrome. Clinical case: This is the case of an 85-year-old patient who, during the immediate postoperative period after ocular surgery (pterygium), presented a fluctuating alteration of consciousness, visual hallucinations, decreased bilateral visual acuity and anosognosia. Blood analysis reported no alterations and cranial computed tomography documented bilateral occipital ischemia; the patient was diagnosed with Anton-Babinski syndrome. Conclusions: Anton-Babinski syndrome may have an atypical presentation through geriatric syndromes. Comprehensive geriatric assessment allows for timely multicomponent diagnosis and management with the aim of influencing both short- and long-term prognosis(AU)


Assuntos
Humanos , Masculino , Feminino , Idoso de 80 Anos ou mais , Infarto Cerebral , Cegueira Cortical/epidemiologia , Delírio , Agnosia
6.
Chin. j. integr. med ; Chin. j. integr. med;(12): 61-68, 2023.
Artigo em Inglês | WPRIM | ID: wpr-971318

RESUMO

OBJECTIVE@#To explore the effect of electroacupuncture (EA) intervention on the vasoconstriction of cerebral artery smooth muscle cells after cerebral infarction.@*METHODS@#Male Wistar rats were randomly divided into 3 groups by a random number table: the model group (n=24), the EA group (n=24), and the normal group (n=6). The model and the EA groups were divided into different time subgroups at 0.5, 1, 3, and 6 h after middle cerebral artery occlusion (MCAO), with 6 rats in each subgroup. MCAO model was established using intraluminal suture occlusion method. The EA group was given EA treatment at acupoint Shuigou (GV 26) instantly after MCAO for 20 min. The contents of cerebrovascular smooth muscle MLCK, the 3 subunits of myosin light chain phosphatase (MLCP) MYPT1, PP1c-δ and M20, as well as myosin-ATPase activity were detected using immunohistochemistry and Western blotting.@*RESULTS@#The overall expression level of the MYPT1 and PP1c-δ in the model group was significantly higher (P<0.01). After EA intervention, the 0.5 h group expression level was close to that of the normal group (P>0.05), and the other subgroups were still significantly higher than the normal group (P<0.01). After EA intervention, the expression level of each subgroup was significantly lower than the corresponding model group. There was a significant difference between the 0.5 and 1 h subgroups (P<0.01), while a difference was also observed between the 3 and 6 h subgroups (P<0.05). The dynamic change rule gradually increased with the prolongation of infarction time within 6 h after infarction.@*CONCLUSION@#EA intervention can inhibit contraction of cerebral vascular smooth muscle cells and regulate smooth muscle relaxation by regulating MLCK pathway.


Assuntos
Ratos , Masculino , Animais , Ratos Wistar , Eletroacupuntura , Infarto Cerebral/metabolismo , Músculo Liso , Pontos de Acupuntura , Isquemia Encefálica/terapia
7.
Artigo em Chinês | WPRIM | ID: wpr-971531

RESUMO

OBJECTIVE@#To explore the relationship between serum lipoprotein-associated phospholipase A2 (Lp-PLA2) level and the risk of acute ischemic stroke (AIS) recurrence in hypertensive patients.@*METHODS@#This retrospective case-control study was conducted among 211 hypertensive patients with AIS treated in Foshan First People's Hospital, including 35 patients with recurrence of AIS during the 1-year follow-up as confirmed by head CT/MR. In the overall patients, 60 had grade 1 hypertension (including 5 recurrent cases), 76 had grade 2 hypertension (with 11 recurrent cases), and 75 had grade 3 hypertension (with 19 recurrent cases). Univariate analysis, multivariate logistic regression analysis, trend analysis, and smooth curve fitting analysis were performed to explore the correlation between serum Lp-PLA2 level within 24 h after admission and the risk of AIS recurrence. The predictive efficacy of serum Lp-PLA2 level for AIS recurrence in different hypertension grades was evaluated using ROC curve analysis.@*RESULTS@#Serum Lp-PLA2 level, age, NIHSS score at admission, mRS scores at 7 days, homocysteine level and smoking status differed significantly between patients with and without AIS recurrence (P < 0.05). After adjustment for confounding factors, multivariate regression analysis showed that the highest tertile of Lp-PLA2 level was associated with a 4.13-fold increase of AIS recurrence risk compared with the lowest tertile (OR=5.13, 95% CI: 1.35-19.40), and each 1 ng/mL increase of Lp-PLA2 level was associated with a 1% increase of AIS recurrence risk (OR= 1.01, 95% CI: 1.01-1.02). Serum Lp-PLA2 level was shown to positively correlate with AIS recurrence risk, and in patients with grade 3 hypertension, its areas under the ROC curve for predicting AIS recurrence was 0.869 with a specificity of 0.893 and a sensitivity of 0.737.@*CONCLUSION@#Serum Lp-PLA2 concentration is an independent risk factor and potentially an effective predictor for AIS recurrence in patients with grade 3 hypertension.


Assuntos
Humanos , Recém-Nascido , 1-Alquil-2-acetilglicerofosfocolina Esterase , Doença Aguda , Biomarcadores , Isquemia Encefálica/etiologia , Estudos de Casos e Controles , Infarto Cerebral , Hipertensão/complicações , AVC Isquêmico/complicações , Estudos Retrospectivos , Fatores de Risco , Acidente Vascular Cerebral
8.
Artigo em Chinês | WPRIM | ID: wpr-971532

RESUMO

OBJECTIVE@#To explore the mechanism that mediates the effect of soybean isoflavones (SI) against cerebral ischemia/reperfusion (I/R) injury in light of the regulation of regional cerebral blood flow (rCBF), ferroptosis, inflammatory response and blood-brain barrier (BBB) permeability.@*METHODS@#A total of 120 male SD rats were equally randomized into sham-operated group (Sham group), cerebral I/R injury group and SI pretreatment group (SI group). Focal cerebral I/R injury was induced in the latter two groups using a modified monofilament occlusion technique, and the intraoperative changes of real-time cerebral cortex blood flow were monitored using a laser Doppler flowmeter (LDF). The postoperative changes of cerebral pathological morphology and the ultrastructure of the neurons and the BBB were observed with optical and transmission electron microscopy. The neurological deficits of the rats was assessed, and the severities of cerebral infarction, brain edema and BBB disruption were quantified. The contents of Fe2+, GSH, MDA and MPO in the ischemic penumbra were determined with spectrophotometric tests. Serum levels of TNF-α and IL-1βwere analyzed using ELISA, and the expressions of GPX4, MMP-9 and occludin around the lesion were detected with Western blotting and immunohistochemistry.@*RESULTS@#The rCBF was sharply reduced in the rats in I/R group and SI group after successful insertion of the monofilament. Compared with those in Sham group, the rats in I/R group showed significantly increased neurological deficit scores, cerebral infarction volume, brain water content and Evans blue permeability (P < 0.01), decreased Fe2+ level, increased MDA level, decreased GSH content and GPX4 expression (P < 0.01), increased MPO content and serum levels of TNF-α and IL-1β (P < 0.01), increased MMP-9 expression and lowered occludin expression (P < 0.01). All these changes were significantly ameliorated in rats pretreated with IS prior to I/R injury (P < 0.05 or 0.01).@*CONCLUSION@#SI preconditioning reduces cerebral I/R injury in rats possibly by improving rCBF, inhibiting ferroptosis and inflammatory response and protecting the BBB.


Assuntos
Ratos , Masculino , Animais , Ratos Sprague-Dawley , Metaloproteinase 9 da Matriz/metabolismo , Glycine max/metabolismo , Ocludina/metabolismo , Fator de Necrose Tumoral alfa/metabolismo , Ferroptose , Barreira Hematoencefálica/ultraestrutura , Isquemia Encefálica/metabolismo , Infarto Cerebral , Traumatismo por Reperfusão/metabolismo , Isoflavonas/uso terapêutico , Infarto da Artéria Cerebral Média
9.
Artigo em Chinês | WPRIM | ID: wpr-987036

RESUMO

OBJECTIVE@#To improve the classical 4-vessel occlusion (4VO) model established by Pulsinelli and Brierley.@*METHODS@#Thirty-two male SD rats were randomized into sham operation group, I4VO-Con10 group, I4VO-Int10 group and I4VO-Int15 group. The sham surgery group underwent exposure of the bilateral vertebral arteries and carotid arteries without occlusion to block blood flow. The I4VO-Con10 group experienced continuous ischemia by occluding the bilateral vertebral arteries and carotid arteries for 10 minutes followed by reperfusion for 24 hours. The I4VO-Int10 and I4VO-Int15 groups were subjected to intermittent ischemia. The I4VO- Int10 group underwent 5 minutes of ischemia, followed by 5 minutes of reperfusion and another 5 minutes of ischemia, and then reperfusion for 24 hours. The I4VO-Int15 group experienced 5 minutes of ischemia followed by two cycles of 5 minutes of reperfusion and 5 minutes of ischemia, and then reperfusion for 24 hours. The regional cerebral blood flow (rCBF) was monitored with laser Doppler scanning, and survival of the rats was observed. HE staining was used to observe hippocampal pathologies to determine the optimal method for modeling. Another 48 rats were randomized into 6 groups, including a sham operation group and 5 model groups established using the optimal method. The 5 I4VO model groups were further divided based on the reperfusion time points (1, 3, 7, 14, and 28 days) into I4VO-D1, I4VO-D3, I4VO-D7, I4VO- D14, and I4VO- D28 groups. Body weight changes and survival of the rats were recorded. HE staining was used to observe morphological changes in the hippocampal, retinal and optic tract tissues. The Y-maze test and light/dark box test were used to evaluate cognitive and visual functions of the rats in I4VO-D28 group.@*RESULTS@#Occlusion for 5 min for 3 times at the interval of 5 min was the optimal method for 4VO modeling. In the latter 48 rats, the body weight was significantly lower than that of the sham-operated rats at 1, 3, 7, 14 and 28 days after modeling without significant difference in survival rate among the groups. The rats with intermittent vessel occlusion exhibited progressive deterioration of hippocampal neuronal injury and neuronal loss. Cognitive impairment was observed in the rats in I4VO-D28 group, but no obvious ischemic injury of the retina or the optic tract was detected.@*CONCLUSION@#The improved 4VO model can successfully mimic the main pathological processes of global cerebral ischemia-reperfusion injury without causing visual impairment in rats.


Assuntos
Ratos , Masculino , Animais , Ratos Sprague-Dawley , Isquemia Encefálica , Infarto Cerebral , Traumatismo por Reperfusão , Peso Corporal
10.
Zhongguo Zhong Yao Za Zhi ; (24): 1076-1086, 2023.
Artigo em Chinês | WPRIM | ID: wpr-970579

RESUMO

Based on GC-MS and network pharmacology, the active constituents, potential targets, and mechanism of essential oil from Gleditsiae Fructus Abnormalis(EOGFA) against cerebral ischemia/reperfusion(I/R) injury were explored, and the effective constituents were verified by experiment. To be specific, GC-MS was used identify the constituents of the volatile oil. Secondly, the targets of the constituents and disease were predicted by network pharmacology, and the drug-constituent-target network was constructed, followed by Gene Ontology(GO) term enrichment and Kyoto Encyclopedia of Genes and Genomes(KEGG) pathway enrichment of the core targets. Molecular docking was performed to investigate the binding affinity between the active constituents and the targets. Finally, SD rats were used for experimental verification. The I/R injury model was established, and the neurological behavior score, infarct volume, and pathological morphology of brain tissue were measured in each group. The content of interleukin-1β(IL-1β), interleukin-6(IL-6), and tumor necrosis factor-alpha(TNF-α) was determined by enzyme-linked immunosorbent assay(ELISA), and the protein expression of vascular endothelial growth factor(VEGF) by Western blot. A total of 22 active constituents and 17 core targets were screened out. The core targets were involved in 56 GO terms and the major KEGG pathways of TNF signaling pathway, VEGF signaling pathway, and sphingolipid signaling pathway. Molecular docking showed that the active constituents had high affinity to the targets. The results of animal experiment suggested that EOGFA can alleviate the neurological impairment, decrease the cerebral infarct volume and the content of IL-1β, IL-6 and TNF-α, and down-regulate the expression of VEGF. The experiment verified the part results of network pharmacology. This study reflects the multi-component, multi-target, and multi-pathway characteristics of EOGFA. The mechanism of its active constituents is related to TNF and VEGF pathways, which provides a new direction for in-depth research on and secondary development of Gleditsiae Fructus Abnormalis.


Assuntos
Animais , Ratos , Ratos Sprague-Dawley , Farmacologia em Rede , Óleos Voláteis , Cromatografia Gasosa-Espectrometria de Massas , Interleucina-6 , Simulação de Acoplamento Molecular , Fator de Necrose Tumoral alfa , Fator A de Crescimento do Endotélio Vascular , Traumatismo por Reperfusão , Infarto Cerebral
11.
Zhongguo Zhong Yao Za Zhi ; (24): 1289-1299, 2023.
Artigo em Chinês | WPRIM | ID: wpr-970600

RESUMO

This study compared the ameliorating effects of L-borneol, natural borneol, and synthetic borneol on the injury of different brain regions in the rat model of acute phase of cerebral ischemia/reperfusion(I/R) for the first time, which provides a reference for guiding the rational application of borneol in the early treatment of ischemic stroke and has important academic and application values. Healthy specific pathogen-free(SPF)-grade SD male rats were randomly assigned into 13 groups: a sham-operation group, a model group, a Tween model group, a positive drug(nimodipine) group, and high-, medium-, and low-dose(0.2, 0.1, and 0.05 g·kg~(-1), respectively) groups of L-borneol, natural borneol, and synthetic borneol according to body weight. After 3 days of pre-administration, the rat model of I/R was established by suture-occluded method and confirmed by laser speckle imaging. The corresponding agents in different groups were then administered for 1 day. The body temperature was monitored regularly before pre-administration, days 1, 2, and 3 of pre-administration, 2 h after model awakening, and 1 d after model establishment. Neurological function was evaluated based on Zea-Longa score and modified neurological severity score(mNSS) 2 h and next day after awakening. The rats were anesthetized 30 min after the last administration, and blood was collected from the abdominal aorta. Enzyme-linked immunoassay assay(ELISA) was employed to determine the serum levels of tumor necrosis factor-alpha(TNF-α), interleukin-6(IL-6), IL-4, and transforming growth factor-beta1(TGF-β1). The brain tissues were stained with triphenyltetrazolium chloride(TTC) for the calculation of cerebral infarction rate, and hematoxylin-eosin(HE) staining was used for observing and semi-quantitatively evaluating the pathological damage in different brain regions. Immunohistochemistry was employed to detect the expression of ionized calcium binding adapter molecule 1(IBA1) in microglia. q-PCR was carried out to determine the mRNA levels of iNOS and arginase 1(Arg1), markers of polarization phenotype M1 and M2 in microglia. Compared with the sham-operation group, the model group and the Tween model group showed significantly elevated body temperature, Zea-Longa score, mNSS, and cerebral infarction rate, severely damaged cortex, hippocampus, and striatum, increased serum levels of IL-6 and TNF-α, and decreased serum levels of IL-4 and TGF-β1. The three borneol products had a tendency to reduce the body temperature of rats 1 day after modeling. Synthetic borneol at the doses of 0.2 and 0.05 g·kg~(-1), as well as L-borneol of 0.1 g·kg~(-1), significantly reduced Zea-Longa score and mNSS. The three borneol products at the dose of 0.2 g·kg~(-1) significantly reduced the cerebral infarction rate. L-borneol at the doses of 0.2 and 0.1 g·kg~(-1) and natural borneol at the dose of 0.1 g·kg~(-1) significantly reduced the pathological damage of the cortex. L-borneol and natural borneol at the dose of 0.1 g·kg~(-1) attenuated the pathological damage of hippocampus, and 0.2 g·kg~(-1) L-borneol attenuated the damage of striatum. The 0.2 g·kg~(-1) L-borneol and the three doses of natural borneol and synthetic borneol significantly reduced the serum level of TNF-α, and the 0.1 g·kg~(-1) synthetic borneol reduced the level of IL-6. L-borneol and synthetic borneol at the dose of 0.2 g·kg~(-1) significantly inhibited the activation of cortical microglia, and 0.2 g·kg~(-1) L-borneol up-regulated the expression of Arg1 and down-regulated the expression level of iNOS. In conclusion, the three borneol products may alleviate inflammation to ameliorate the pathological damage of brain regions of rats in the acute phase of I/R by inhibiting the activation of microglia and promoting the polarization of microglia from M1 type to M2 type. The protective effect on brain followed a trend of L-borneol > synthetic borneol > natural borneol. We suggest L-borneol the first choice for the treatment of I/R in the acute phase.


Assuntos
Ratos , Masculino , Animais , Fator de Crescimento Transformador beta1/metabolismo , Ratos Sprague-Dawley , Fator de Necrose Tumoral alfa/metabolismo , Interleucina-6/metabolismo , Interleucina-4/metabolismo , Polissorbatos , Encéfalo , Isquemia Encefálica/metabolismo , Traumatismo por Reperfusão/metabolismo , Infarto Cerebral , Reperfusão
12.
Zhongguo Zhong Yao Za Zhi ; (24): 1381-1392, 2023.
Artigo em Chinês | WPRIM | ID: wpr-970608

RESUMO

Angong Niuhuang Pills, a classical formula in traditional Chinese medicine, are lauded as one of the "three treasures of febrile diseases" and have been widely used in the treatment of diverse disorders with definite efficacy. However, there is still a lack of bibliometric analysis of research progress and development trend regarding Angong Niuhuang Pills. Research articles on Angong Niuhuang Pills in China and abroad(2000-2022) were retrieved from CNKI and Web of Science. CiteSpace 6.1 was used to visualize the key contents of the research articles. In addition, the research status of Angong Niuhuang Pills was analyzed by information extraction to allow insight into the research trends and hotspots about Angong Niuhuang Pills. A total of 460 Chinese articles and 41 English articles were included. Beijing University of Chinese Medicine and Sun Yat-Sen University were the research institutions that have published the largest amount of research articles in Chinese and English. The keyword analysis showed that the Chinese articles focused on cerebral hemorrhage, stroke, neurological function, coma, cerebral infarction, craniocerebral injury, and clinical application, while the English articles focused on the mechanisms of cerebral ischemia, stroke, heavy metal, blood-brain barrier, and oxidative stress. Stroke, blood-brain barrier, and oxidative stress were presumably the research hotspots in the future. At present, the research on Angong Niuhuang Pills is still in the developing stage. It is necessary to highlight the in-depth research on the active components and mechanism of action and carry out large-scale randomized controlled clinical trials to provide references for the further development and application of Angong Niuhuang Pills.


Assuntos
Humanos , Medicamentos de Ervas Chinesas/uso terapêutico , Acidente Vascular Cerebral/tratamento farmacológico , Medicina Tradicional Chinesa , Isquemia Encefálica/tratamento farmacológico , Infarto Cerebral/tratamento farmacológico
13.
Zhongguo Zhong Yao Za Zhi ; (24): 1589-1596, 2023.
Artigo em Chinês | WPRIM | ID: wpr-970631

RESUMO

This study aims to investigate the effect of Bombyx Batryticatus extract(BBE) on behaviors of rats with global cerebral ischemia reperfusion(I/R) and the underlying mechanism. The automatic coagulometer was used to detect the four indices of human plasma coagulation after BBE intervention for quality control of the extract. Sixty 4-week-old male SD rats were randomized into sham operation group(equivalent volume of normal saline, ip), model group(equivalent volume of normal saline, ip), positive drug group(900 IU·kg~(-1) heparin, ip), and low-, medium-, and high-dose BBE groups(0.45, 0.9, and 1.8 mg·g~(-1)·d~(-1) BBE, ip). Except the sham operation group, rats were subjected to bilateral common carotid artery occlusion followed by reperfusion(BCCAO/R) to induce I/R. The administration lasted 7 days for all the groups. The behaviors of rats were examined by beam balance test(BBT). Morphological changes of brain tissue were observed based on hematoxylin-eosin(HE) staining. Immunofluorescence method was used to detect common leukocyte antigen(CD45), leukocyte differentiation antigen(CD11b), and arginase-1(Arg-1) in cerebral cortex(CC). The protein expression of interleukin-1β(IL-1β), interleukin-4(IL-4), interleukin-6(IL-6), and interleukin-10(IL-10) was detected by enzyme-linked immunosorbent assay(ELISA). The non-targeted metabonomics was employed to detect the levels of metabolites in plasma and CC of rats after BBE intervention. The results of quality control showed that the BBE prolonged the activated partial thromboplastin time(APTT), prothrombin time(PT), and thrombin time(TT) of human plasma, which was similar to the anticoagulation effect of BBE obtained previously. The results of behavioral test showed that the BBT score of the model group increased compared with that of the sham operation group. Compared with the model group, BBE reduced the BBT score. As for the histomorphological examination, compared with the sham operation group, the model group showed morphological changes of a lot of nerve cells in CC. The nerve cells with abnormal morphology in CC decreased after the intervention of BBE compared with those in the model group. Compared with the sham operation group, the model group had high average fluorescence intensity of CD45 and CD11b in the CC. The average fluorescence intensity of CD11b decreased and the average fluorescence intensity of Arg-1 increased in CC in the low-dose BBE group compared with those in the model group. The average fluorescence intensity of CD45 and CD11b decreased and the average fluorescence intensity of Arg-1 increased in medium-and high-dose BBE groups compared with those in the model group. The expression of IL-1β and IL-6 was higher and the expression of IL-4 and IL-10 was lower in the model group than in the sham operation group. The expression of IL-1β and IL-6 was lower and the expression of IL-4 and IL-10 was higher in the low-dose, medium-dose, and high-dose BBE groups than in the model group. The results of non-targeted metabonomics showed that 809 metabolites of BBE were identified, and 57 new metabolites in rat plasma and 45 new metabolites in rat CC were found. BBE with anticoagulant effect can improve the behaviors of I/R rats, and the mechanism is that it promotes the polarization of microglia to M2 type, enhances its anti-inflammatory and phagocytic functions, and thus alleviates the damage of nerve cells in CC.


Assuntos
Humanos , Ratos , Masculino , Animais , Interleucina-10 , Ratos Sprague-Dawley , Interleucina-4/metabolismo , Bombyx , Interleucina-6/metabolismo , Microglia/metabolismo , Solução Salina/metabolismo , Traumatismo por Reperfusão/metabolismo , Isquemia Encefálica/metabolismo , Infarto Cerebral , Reperfusão , Neurônios
14.
Zhongguo Zhong Yao Za Zhi ; (24): 1597-1605, 2023.
Artigo em Chinês | WPRIM | ID: wpr-970632

RESUMO

The purpose of this study is to investigate whether chrysin reduces cerebral ischemia-reperfusion injury(CIRI) by inhi-biting ferroptosis in rats. Male SD rats were randomly divided into a sham group, a model group, high-, medium-, and low-dose chrysin groups(200, 100, and 50 mg·kg~(-1)), and a positive drug group(Ginaton, 21.6 mg·kg~(-1)). The CIRI model was induced in rats by transient middle cerebral artery occlusion(tMCAO). The indexes were evaluated and the samples were taken 24 h after the operation. The neurological deficit score was used to detect neurological function. The 2,3,5-triphenyl tetrazolium chloride(TTC) staining was used to detect the cerebral infarction area. Hematoxylin-eosin(HE) staining and Nissl staining were used to observe the morphological structure of brain tissues. Prussian blue staining was used to observe the iron accumulation in the brain. Total iron, lipid pero-xide, and malondialdehyde in serum and brain tissues were detected by biochemical reagents. Real-time quantitative polymerase chain reaction(RT-qPCR), immunohistochemistry, and Western blot were used to detect mRNA and protein expression of solute carrier fa-mily 7 member 11(SLC7A11), transferrin receptor 1(TFR1), glutathione peroxidase 4(GPX4), acyl-CoA synthetase long chain family member 4(ACSL4), and prostaglandin-endoperoxide synthase 2(PTGS2) in brain tissues. Compared with the model group, the groups with drug intervention showed restored neurological function, decreased cerebral infarction rate, and alleviated pathological changes. The low-dose chrysin group was selected as the optimal dosing group. Compared with the model group, the chrysin groups showed reduced content of total iron, lipid peroxide, and malondialdehyde in brain tissues and serum, increased mRNA and protein expression levels of SLC7A11 and GPX4, and decreased mRNA and protein expression levels of TFR1, PTGS2, and ACSL4. Chrysin may regulate iron metabolism via regulating the related targets of ferroptosis and inhibit neuronal ferroptosis induced by CIRI.


Assuntos
Ratos , Masculino , Animais , Ratos Sprague-Dawley , Ferroptose , Transdução de Sinais , Isquemia Encefálica/metabolismo , Ciclo-Oxigenase 2/metabolismo , RNA Mensageiro , Infarto Cerebral , Traumatismo por Reperfusão/metabolismo , Malondialdeído , Infarto da Artéria Cerebral Média
15.
Zhongguo zhenjiu ; (12): 661-668, 2023.
Artigo em Chinês | WPRIM | ID: wpr-980776

RESUMO

OBJECTIVE@#To investigate the neuroprotective effect of electroacupuncture (EA) at "Quchi" (LI 11) and "Zusanli" (ST 36) in the rats with cerebral ischemic reperfusion and the potential mechanism of microglia pyroptosis.@*METHODS@#Sixty SD rats were randomly divided into a sham-operation group, a model group and an EA group, with 20 rats in each group. The Zea Longa method was employed to establish the rat model of the middle cerebral artery occlusion and reperfusion (MACO/R) in the left brain. In the EA group, since the 2nd day of modeling, EA was given at "Quchi" (LI 11) and "Zusanli" (ST 36) of right side with disperse-dense wave, 4 Hz/20 Hz in frequency and 0.2 mA in current intensity, 30 min each time, once a day for lasting 7 consecutive days. The reduction rate of cerebral blood flow was measured with laser Doppler flowmetry during operation. The neurological function of rats was observed using Zea Longa neurobehavioral score. The cerebral infarction volume was detected by TTC staining method. The microglia positive expression in the ischemic side of the cortex was detected with the immunofluorescence method. Under transmission electron microscope, the ultrastructure of cell in the ischemic cortex was observed. The mRNA expression levels of nucleotide-binding oligomerization domain-like receptor protein 3 (NLRP3), apoptosis-associated speck-like protein containing a caspase recruitment domain (ASC), cysteinyl aspartate specific proteinase-1 (Caspase-1) and gasdermin D (GSDMD) in the ischemic cortex were detected using real-time PCR.@*RESULTS@#Compared with the sham-operation group, in the model group, the reduction rate of cerebral blood flow was increased during operation (P<0.001); Zea Longa neurobehavional score and the percentage of cerebral infarction volume were increased (P<0.001), the numbers of M1-type microglia marked by CD68+ and M2-type microglia marked by TMEM119+ were elevated in the ischemic cortex (P<0.001), the mRNA expression of NLRP3, ASC, Caspase-1 and GSDMD was increased (P<0.001, P<0.01); the cytomembrane structure was destroyed, with more cell membrane pores formed in the ischemic cortex. Compared with the model group, after intervention, Zea Longa neurobehavioral score and the percentage of cerebral infarction volume were reduced (P<0.05), the number of M1-type microglia marked by CD68+ was reduced (P<0.05) and the number of M2-type microglia marked by TMEM119+ was increased (P<0.05); and the mRNA expression of NLRP3, ASC, Caspase-1 and GSDMD was decreased (P<0.01, P<0.05) in the EA group. Even though the cytomembrane structure was incomplete, there were less membrane pores presented in the ischemic cortex in the EA group after intervention.@*CONCLUSION@#The intervention with EA attenuates the neurological dysfunction and reduces the volume of cerebral infarction in the rats with cerebral ischemic reperfusion. The underlying mechanism is related to the inhibition of microglia pyroptosis through modulating NLRP3/Caspase-1/GSDMD axis.


Assuntos
Animais , Ratos , Ratos Sprague-Dawley , Caspase 1/genética , Proteína 3 que Contém Domínio de Pirina da Família NLR/genética , Eletroacupuntura , Infarto Cerebral/terapia , RNA Mensageiro
16.
Zhongguo zhenjiu ; (12): 783-792, 2023.
Artigo em Chinês | WPRIM | ID: wpr-980796

RESUMO

OBJECTIVE@#To observe the effect of Tongdu Tiaoshen (promoting the circulation of the governor vessel and regulating the spirit) electroacupuncture (EA) pretreatment on pyroptosis mediated by peroxisome proliferators-activated receptor γ (PPARγ) of the cerebral cortex in rats with cerebral ischemia reperfusion injury (CIRI) and explore the potential mechanism of EA for the prevention and treatment of CIRI.@*METHODS@#A total of 110 clean-grade male SD rats were randomly divided into a sham-operation group, a model group, an EA group, an EA + inhibitor group and an agonist group, 22 rats in each group. In the EA group, before modeling, EA was applied to "Baihui" (GV 20), "Fengfu" (GV 16) and "Dazhui" (GV 14), with disperse-dense wave, 2 Hz/5 Hz in frequency, 1 to 2 mA in intensity, lasting 20 min; once a day, consecutively for 7 days. On the base of the intervention as the EA group, on the day 7, the intraperitoneal injection with the PPARγ inhibitor, GW9662 (10 mg/kg) was delivered in the EA + inhibitor group. In the agonist group, on the day 7, the PPARγ agonist, pioglitazone hydrochloride (10 mg/kg) was injected intraperitoneally. At the end of intervention, except the sham-operation group, the modified thread embolization method was adopted to establish the right CIRI model in the rats of the other groups. Using the score of the modified neurological severity score (mNSS), the neurological defect condition of rats was evaluated. TTC staining was adopted to detect the relative cerebral infarction volume of rat, TUNEL staining was used to detect apoptosis of cerebral cortical nerve cells and the transmission electron microscope was used to observe pyroptosis of cerebral cortical neural cells. The positive expression of PPARγ and nucleotide-binding to oligomerization domain-like receptor protein 3 (NLRP3) in the cerebral cortex was detected with the immunofluorescence staining. The protein expression of PPARγ, NLRP3, cysteinyl aspartate specific protease-1 (caspase-1), gasdermin D (GSDMD) and GSDMD-N terminal (GSDMD-N) in the cerebral cortex was detected with Western blot. Using the quantitative real-time fluorescence-PCR, the mRNA expression of PPARγ, NLRP3, caspase-1 and GSDMD of the cerebral cortex was detected. The contents of interleukin (IL)-1β and IL-18 in the cerebral cortex of rats were determined by ELISA.@*RESULTS@#Compared with the sham-operation group, the mNSS, the relative cerebral infarction volume and the TUNEL positive cells rate were increased (P<0.01), pyroptosis was severe, the protein and mRNA expression levels of PPARγ, NLRP3, caspase-1 and GSDMD were elevated (P<0.01); and the protein expression of GSDMD-N and contents of IL-1β and IL-18 were increased (P<0.01) in the model group. When compared with the model group, the mNSS, the relative cerebral infarction volume and the TUNEL positive cells rate were decreased (P<0.01), pyroptosis was alleviated, the protein and mRNA expression levels of PPARγ were increased (P<0.01), the protein and mRNA expression levels of NLRP3, caspase-1 and GSDMD were decreased (P<0.01), the protein expression of GSDMD-N was reduced (P<0.01); and the contents of IL-1β and IL-18 were lower (P<0.01) in the EA group and the agonist group; while, in the EA + inhibitor group, the protein expression of PPARγ was increased (P<0.01), the protein and mRNA expression levels of NLRP3 and GSDMD were decreased (P<0.01, P<0.05), the mRNA expression of caspase-1 was reduced (P<0.01); and the contents of IL-1β and IL-18 were lower (P<0.01). When compared with the EA + inhibitor group, the mNSS, the relative cerebral infarction volume and the TUNEL positive cells rate were decreased (P<0.05, P<0.01), pyroptosis was alleviated, the protein and mRNA expression levels of PPARγ were increased (P<0.01), the protein and mRNA expression levels of NLRP3, caspase-1 and GSDMD were decreased (P<0.01), the protein expression of GSDMD-N was reduced (P<0.01); and the contents of IL-1β and IL-18 were declined (P<0.01) in the EA group. Compared with the agonist group, in the EA group, the relative cerebral infarction volume and the TUNEL positive cells rate were increased (P<0.05, P<0.01), the mRNA expression of PPARγ was decreased (P<0.01) and the protein expression of GSDMD-N was elevated (P<0.05); and the contents of IL-1β and IL-18 were higher (P<0.01).@*CONCLUSION@#Tongdu Tiaoshen EA pretreatment can attenuate the neurological impairment in the rats with CIRI, and the underlying mechanism is related to the up-regulation of PPARγ inducing the inhibition of NLRP3 in the cerebral cortex of rats so that pyroptosis is affected.


Assuntos
Masculino , Animais , Ratos , Ratos Sprague-Dawley , PPAR gama/genética , Piroptose , Interleucina-18 , Eletroacupuntura , Proteína 3 que Contém Domínio de Pirina da Família NLR , Córtex Cerebral , Infarto Cerebral/terapia , Caspases , RNA Mensageiro
17.
Zhongguo yi xue ke xue yuan xue bao ; Zhongguo yi xue ke xue yuan xue bao;(6): 251-256, 2023.
Artigo em Chinês | WPRIM | ID: wpr-981260

RESUMO

Objective To evaluate the effect of surgical reconstruction of extracranial vertebral artery and to summarize the experience. Methods The clinical data of 15 patients undergoing surgical reconstruction of extracranial vertebral artery from September 2018 to June 2022 were collected.The operation methods,operation duration,intraoperative blood loss,operation complications,and relief of symptoms were retrospectively analyzed. Results Eleven patients underwent vertebral artery (V1 segment) to common carotid artery transposition,two patients underwent endarterectomy of V1 segment,two patients underwent V3 segment to external carotid artery bypass or transposition.The operation duration,intraoperative blood loss,and blocking time of common carotid artery varied within 120-340 min,50-300 ml,and 12-25 min,with the medians of 240 min,100 ml,and 16 min,respectively.There was no cardiac accident,cerebral hyperperfusion syndrome,cerebral hemorrhage or lymphatic leakage during the perioperative period.One patient suffered from cerebral infarction and three patients suffered from incomplete Horner's syndrome after the operation.During the follow-up (4-45 months,median of 26 months),there was no anastomotic stenosis,new cerebral infarction or cerebral ischemia. Conclusion Surgical reconstruction of extracranial vertebral artery is safe and effective,and individualized reconstruction strategy should be adopted according to different conditions.


Assuntos
Humanos , Artéria Vertebral/cirurgia , Perda Sanguínea Cirúrgica , Estudos Retrospectivos , Isquemia Encefálica , Infarto Cerebral
18.
Zhongguo Zhong Yao Za Zhi ; (24): 3308-3316, 2023.
Artigo em Chinês | WPRIM | ID: wpr-981468

RESUMO

Based on the O-GlcNAc transferase(OGT)-PTEN-induced putative kinase 1(PINK1) pathway, the mechanism of 3,4-dihydroxybenzaldehyde(DBD) on mitochondrial quality control was investigated. Middle cerebral artery occlusion/reperfusion(MCAO/R) rats were established. SD rats were randomized into sham operation group(sham), model group(MCAO/R), DBD-L group(5 mg·kg~(-1)), and DBD-H group(10 mg·kg~(-1)). After 7 days of administration(ig), MCAO/R was induced in rats except the sham group with the suture method. Twenty-four h after reperfusion, the neurological function and the percentage of cerebral infarct area were measured. Based on hematoxylin and eosin(HE) staining and Nissl staining, the pathological damage of cerebral neurons was examined. Then the ultrastructure of mitochondria was observed under the electron microscope, and the co-localization of light chain-3(LC3), sequestosome-1(SQSTM1/P62), and Beclin1 was further detected by immunofluorescence staining. It has been reported that the quality of mitochondria can be ensured by inducing mitochondrial autophagy through the OGT-PINK1 pathway. Therefore, Western blot was employed to detect the expression of OGT, mitophagy-related proteins PINK1 and E3 ubiquitin ligase(Parkin), and mitochondrial kinetic proteins dynamin-like protein 1(Drp1) and optic atrophy 1(Opa1). The results showed that MCAO/R group had neurological dysfunction, large cerebral infarct area(P<0.01), damaged morphological structure of neurons, decreased number of Nissl bodies, mitochondrial swelling, disappearance of mitochondrial cristae, decrease of cells with LC3 and Beclin1, rise of cells with P62(P<0.01), inhibited expression of OGT, PINK1, and Parkin, up-regulated expression of Drp1, and down-regulated expression of Opa1 compared with the sham group(P<0.01). However, DBD improved the behavioral deficits and mitochondrial health of MCAO/R rats, as manifested by the improved morphology and structure of neurons and mitochondria and the increased Nissl bodies. Moreover, DBD increased cells with LC3 and Beclin1 and decreased cells with P62(P<0.01). In addition, DBD promoted the expression of OGT, PINK1, Parkin, and Opa1 and inhibited the expression of Drp1, enhancing mitophagy(P<0.05, P<0.01). In conclusion, DBD can trigger PINK1/Parkin-mediated brain mitophagy through the OGT-PINK1 pathway, which plays a positive role in maintaining the health of the mitochondrial network. This may be a mitochondrial therapeutic mechanism to promote nerve cell survival and improve cerebral ischemia/reperfusion injury.


Assuntos
Animais , Ratos , Ratos Sprague-Dawley , Proteína Beclina-1 , Mitocôndrias , Infarto Cerebral , Proteínas Quinases
19.
Zhongguo zhenjiu ; (12): 1056-1061, 2023.
Artigo em Chinês | WPRIM | ID: wpr-1007442

RESUMO

OBJECTIVE@#To observe the effects of Xingnao Kaiqiao (regaining consciousness and opening orifices) acupuncture therapy on the expression of hypoxia-inducible factor 1α (HIF-1α) and Nod-like receptor protein 3 (NLRP3) in cerebral ischemia-reperfusion rats, and to explore the mechanism of acupuncture against cerebral ischemia-reperfusion injury.@*METHODS@#Seventy-two male SD rats were randomly divided into a sham-operation group, a model group, an acupuncture group and a non-point acupuncture group, with 18 rats in each one. Using modified Longa thread embolization method, the rat model of acute focal cerebral ischemia was prepared; and after 2 h ischemia, the reperfusion was performed to prepared the model of cerebral ischemia-reperfusion. Immediately after reperfusion, Xingnao Kaiqiao acupuncture method was applied to bilateral "Neiguan" (PC 6) and "Shuigou" (GV 26) in the acupuncture group, while in the non-point acupuncture group, acupuncture was delivered at non-points and all of the needles were retained for 30 min in these two groups. The samples were collected 24 h after reperfusion in the rats of each group. Zea-Longa neurological deficit score was used to evaluate the degree of cerebral neurological impairment, TTC staining was adopted to observe the volume percentage of cerebral infarction, HE staining was provided to observe the morphological changes of brain, and Western blot was applied for detecting the expression of HIF-1α and NLRP3 proteins in the cerebral cortex on the right side.@*RESULTS@#Compared with the sham-operation group, neurological deficit score and volume percentage of cerebral infarction were increased in the model group (P<0.01), and HIF-1α and NLRP3 protein expression was elevated (P<0.01). Compared with the model group, neurological deficit score and volume percentage of cerebral infarction were decreased (P<0.01), and HIF-1α and NLRP3 protein expression was lower (P<0.01) in the acupuncture group. There was no significant difference in above indexes in the non-point acupuncture group compared with the model group (P>0.05). Compared with the sham-operation group, the brain tissue of the rats in the model group and the non-point acupuncture group was loose and edema, and the nuclei were shriveled. The brain tissue morphology in the acupuncture group was similar to that of the sham-operation group.@*CONCLUSION@#Acupuncture can alleviate cerebral ischemia-reperfusion injury, and its mechanism may be related to the regulation of HIF-1α/NLRP3 signaling pathway to attenuate inflammatory response.


Assuntos
Masculino , Animais , Ratos , Ratos Sprague-Dawley , Proteína 3 que Contém Domínio de Pirina da Família NLR/genética , Terapia por Acupuntura , Traumatismo por Reperfusão/terapia , Isquemia Encefálica/terapia , Infarto Cerebral/terapia , Proteínas NLR
20.
Zhongguo zhenjiu ; (12): 1358-1362, 2023.
Artigo em Inglês | WPRIM | ID: wpr-1007494

RESUMO

OBJECTIVES@#To observe the effects of zhongfeng cutong moxibustion (moxibustion therapy for unblocking and treating stroke) on the motor function and the structure of corticospinal tract (CST) in the patients with motor dysfunction during the recovery period of cerebral infarction, and to explore the central mechanism of this moxibustion therapy for improving the motor function.@*METHODS@#Fifty patients with motor dysfunction during the recovery period of cerebral infarction were randomly divided into an observation group (25 cases, 1 case dropped out) and a control group (25 cases, 1 case dropped out). The patients in both groups underwent the conventional basic treatment. In the control group, acupuncture was applied to Baihui (GV 20) and Shuigou (GV 26), as well as Chize (LU 5), Neiguan (PC 6), Weizhong (BL 40) and Sanyinjiao (SP 6) etc. on the affected side. Besides the intervention of the control group, in the observation group, zhongfeng cutong moxibustion therapy was combined at Baihui (GV 20), Shenque (CV 8) and bilateral Zusanli (ST 36). Both acupuncture and moxibustion therapies were delivered once daily, 5 times a week, for 2 weeks. The scores of Fugl-Meyer assessment scale (FMA) and National Institutes of Health stroke scale (NIHSS) were compared between the two groups before and after treatment. The diffusion tensor imaging technique was used to observe the fractional anisotropy (FA) of CST at the bilateral whole segment, the cerebral cortex, the posterior limb of the internal capsule and the cerebral peduncle before and after treatment in the two groups.@*RESULTS@#The scores of the upper and the lower limbs of FMA, as well as the total FMA score swere increased after treatment when compared with those before treatment in the two groups (P<0.05), the upper limb FMA score and the total FMA score in the observation group were higher than those in the control group (P<0.05), and NIHSS scores of the two groups were dropped compared with those before treatment (P<0.01). FA of CST at the bilateral sides of the posterior limb of the internal capsule and the whole segment on the focal side was improved in comparison with that before treatment in the observation group (P<0.05), and FA of CST at the healthy side of the whole segment was higher than that before treatment in the control group (P<0.05).@*CONCLUSIONS@#Zhongfeng cutong moxibustion improves motor function and reduces neurological deficits in the patients with motor dysfunction during the recovery period of cerebral infarction, which may be related to enhancing the remodeling of white matter fiber bundles in the corticospinal tract on the focal side of the whole segment and the bilateral posterior limb of the internal capsule.


Assuntos
Humanos , Moxibustão , Tratos Piramidais , Imagem de Tensor de Difusão , Terapia por Acupuntura , Infarto Cerebral/terapia , Acidente Vascular Cerebral/terapia , Pontos de Acupuntura , Resultado do Tratamento
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