Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 1.623
Filter
1.
Arq. bras. oftalmol ; 84(3): 220-224, May-June 2021. tab
Article in English | LILACS | ID: biblio-1248974

ABSTRACT

ABSTRACT Purpose: To evaluate the corneal and anterior chamber morphology in phakic eyes with noninfectious intraocular inflammation. Methods: This study included 59 eyes with active uveitis, 62 with inactive uveitis, and 95 healthy eyes. Corneal endothelial cell density, hexagonal cell ratio, coefficient of variation (CV), corneal thickness and volume, maximum keratometry, and anterior chamber volume and depth (ACD) measurements were performed using a specular microscope and Pentacam HR. Results: The mean duration of uveitis was 24.6 ± 40.5 (0-180) months. The mean number of uveitis attacks was 2.8 ± 3.0 (1-20). Coefficient of variation was significantly higher in the active uveitis group compared with inactive uveitis group (p=0.017, Post Hoc Tukey). Anterior segment parameters other than coefficient of variation were not significantly different between active/inactive uveitis and control groups (p>0.05). Multiple linear regression analysis showed that coefficient of variation was greater in active uveitis compared with inactive uveitis after adjusting for the duration of uveitis, type of uveitis, having a rheumatologic disease, and having immunosuppressive treatment (p=0.003). The duration of uveitis and number of attacks were not significantly correlated with ocular parameters (p>0.05, Spearman's correlation). The difference in parameters was not significant based on uveitis type (p>0.05). Conclusions: Coefficient of variation was higher in eyes with active uveitis than that in eyes with inactive uveitis, whereas corneal endothelial cell density and anterior chamber morphology did not significantly differ between active/inactive uveitis and control groups.(AU)


RESUMO Objetivo: Avaliar a morfologia da córnea e da câmara anterior em olhos fácicos com inflamação intraocular não infecciosa. Métodos: Esse estudo incluiu 59 olhos com uveíte ativa, 62 olhos com uveíte inativa e 95 olhos saudáveis. A densidade de células endoteliais da córnea, a proporção de células hexagonais, o coeficiente de variação, o volume e a espessura da córnea, a ceratometria máxima e o volume e profundidade da câmara anterior foram medidos com um microscópio especular e uma Pentacam HR. Resultados: A duração média da uveíte foi de 24,6 ± 40,5 (0-180) meses. O número médio de crises de uveíte foi de 2,8 ± 3,0 (1-20). O coeficiente de variação foi significativamente maior no grupo com uveíte ativa do que no grupo com uveíte inativa (p=0,017, Tukey post-hoc). Não houve diferença significativa nos demais parâmetros do segmento anterior entre os grupos com uveíte ativa, com uveíte inativa e controle (p>0,05). A análise de regressão linear múltipla demonstrou que o coeficiente de variação foi maior na uveíte ativa do que na uveíte inativa, após ajustes para a duração e tipo de uveíte e a presença ou não de doença reumática e de tratamento imunossupressor (p=0,003). A duração da uveíte e o número de crises não demonstraram correlação significativa com os parâmetros oculares (p>0,05, correlação de Spearman). A diferença nos parâmetros não demonstrou correlação significativa com o tipo de uveíte (p>0,05). Conclusões: O coeficiente de variação foi maior nos olhos com uveíte ativa do que naqueles com uveíte inativa, ao passo que a densidade de células endoteliais e a morfologia da câmara anterior não mostraram diferenças significativas entre os grupos com uveíte ativa, com uveíte inativa e controle.(AU)


Subject(s)
Humans , Uveitis/physiopathology , Endothelium, Corneal/anatomy & histology , Cell Count/instrumentation , Cornea/anatomy & histology , Anterior Chamber/anatomy & histology
2.
Rev. cuba. oftalmol ; 34(1): e964, 2021. tab
Article in Spanish | LILACS, CUMED | ID: biblio-1289523

ABSTRACT

Objetivo: Comparar las características de la córnea entre individuos chinos y cubanos adultos sanos. Métodos: Se realizó un estudio observacional, descriptivo, transversal, en 120 ojos de individuos sanos (60 chinos y 60 cubanos), entre 18 y 29 años de edad, entre septiembre del año 2016 y diciembre de 2017 en el Instituto Cubano de Oftalmología "Ramón Pando Ferrer". Se evaluó la edad, el sexo, la queratometría, la paquimetría y las características del endotelio corneal. Resultados: Predominó el sexo femenino (53,3 por ciento en los cubanos y 66,6 por ciento en los chinos). La edad promedio fue de 24,4 años en ambos grupos. La queratometría promedio resultó mayor en el grupo de estudio de cubanos, con un valor de 44,7 y 44,6 dioptrías en ambos ojos, respectivamente. El espesor corneal fue de 607,3-629,9 en los cubanos y de 575,4-607,2 en los chinos. El coeficiente de variación, la desviación estándar y la densidad celular se diferenciaron mínimamente en ambos ojos para ambas nacionalidades, y resultaron superiores en los ojos izquierdos con un coeficiente de 32,0 (±11,0) en los chinos. La desviación estándar promedio fue de 112,0 (± 36,5) en ambos grupos y en el ojo derecho la densidad celular fue 2 857,1 (± 240,0 cél/mm2) en los chinos y 2 760,0 (± 367,2) en los cubanos. El average de los cubanos estuvo entre 369,0 y 380, y para los chinos entre 352,4 y 358,4 en los ojos derecho e izquierdo. Conclusiones: Existen diferencias significativas en los valores queratométricos. El espesor corneal resulta discretamente más reducido en los chinos. El coeficiente de variación, la densidad celular, el average y la desviación estándar no presentan diferencias estadísticamente significativas(AU)


Objective: Compare the corneal features of Chinese and Cuban healthy adult subjects. Methods: A cross-sectional observational descriptive study was conducted of 120 eyes of healthy 18-29 year old individuals (60 Chinese and 60 Cuban) from September 2016 to December 2017 at Ramón Pando Ferrer Cuban Institute of Ophthalmology. The variables analyzed were sex, keratometry, pachymetry and characteristics of the corneal endothelium. Results: Female sex prevailed (53.3 percent among Cuban and 66.6 percent among Chinese subjects). Mean age was 24.4 years in both groups. Mean keratometry was higher in the Cuban group, with values of 44.7 and 44.6 diopters for both eyes, respectively. Corneal thickness was 607.3-629.9 among Cuban and 575.4-607.2 among Chinese subjects. Variation coefficient, standard deviation and cell density were minimally different between the two eyes in both groups, and were higher in left eyes of Chinese subjects with a coefficient of 32.0 (±11.0). Mean standard deviation was 112.0 (± 36.5) in both groups, whereas right eye cell density was 2 857.1 (± 240.0 cell/mm2) among Chinese and 2 760.0 (± 367.2) among Cuban subjects. Average between right and left eyes ranged from 369.0 to 380 for the Cubans and from 352.4 to 358.4 for the Chinese. Conclusions: Significant differences were found between keratometric values. Corneal thickness was slightly lower among Chinese subjects. Variation coefficient, cell density, average and standard deviation did not show any statistically significant differences(AU)


Subject(s)
Humans , Male , Female , Adult , Endothelium, Corneal/diagnostic imaging , Cell Count/methods , Corneal Pachymetry/methods , China , Epidemiology, Descriptive , Cross-Sectional Studies , Cuba , Observational Studies as Topic
3.
J. appl. oral sci ; 29: e20200770, 2021. graf
Article in English | LILACS | ID: biblio-1180798

ABSTRACT

Abstract Objective Neutrophils are key effector cells of the innate immune system. They recognize antigens through membrane receptors, which are expressed during their maturation and activation. Neutrophils express FcγRII (CD32), FcγRIII (CD16), and FcγRI (CD64) after being activated by different factors such as cytokines and bacterial products. These receptors are involved with phagocytosis of IgG-opsonized microbes and enhance defense mechanisms. Based on that, our study seeks to compare the expression of FcγRII, FcγRIII, FcγRI, and CD11b on neutrophils from elderly and young subjects and their expression after in vitro activation with cytokines and LPS. Methodology Neutrophils were isolated from human peripheral blood and from mice bone marrow by density gradient. After isolation, FCγRs expression was immediately analyzed by flow cytometry or after in vitro stimulation. Results In freshly isolated cells, the percentage of FcγRIIIb+ and CD11b+ neutrophils were higher in samples from young individuals; FcγRIIIa expression was more prominent on aged neutrophils; FcγRIA expression was similar in all samples analyzed. Exposure to CXCL8 and LPS resulted in a higher percentage of FcγRIa+ neutrophils on elderly individuals' samples but lower when compared with neutrophils from young donors. We observed that LPS caused an increase in FcγRIIa expression on aging human neutrophils. In contrast, FcγRIIIb expression in response to CXCL8 and LPS stimulation was not altered in the four groups. CD11b expression was lower in neutrophils from elderly individuals even in response to LPS and CXCL8. In mice, we observed differences only regarding CD11b expression, which was increased on aged neutrophils. LPS exposure caused an increase in all FcγRs. Conclusions Our results suggest that, in humans, the overall pattern of FcγR expression and integrin CD11b are altered during aging and immunosenescence might contribute to age-related infection.


Subject(s)
Animals , Mice , Receptors, IgG , Neutrophils , Phagocytosis , Cell Count , Flow Cytometry
4.
Rev. cuba. invest. bioméd ; 39(3): e634, jul.-set. 2020. tab, graf
Article in Spanish | LILACS, CUMED | ID: biblio-1138935

ABSTRACT

Introducción: El carcinoma papilar de tiroides es la causa más frecuente de cáncer de naturaleza endocrina. Constituye la variante histológica de mejor pronóstico, sin embargo, en ocasiones es motivo de importantes dudas diagnósticas con otras variantes de evolución tórpida, lo que dificulta que un mayor número de pacientes se beneficie con un tratamiento individualizado y conservador. Por esta razón, se desarrollan estudios en los que cada vez más se añaden procedimientos morfométricos y densitométricos, los que permiten disminuir la subjetividad en el diagnóstico histopatológico. Objetivo: Determinar la densidad óptica nuclear en el carcinoma papilar de tiroides. Método: Se realizó un estudio morfométrico de serie de casos con 12 pacientes con carcinoma papilar de tiroides, atendidos en el Hospital Provincial Universitario Vladimir Ilich Lenin. Se seleccionaron 36 campos y se midieron 965 núcleos celulares, lo que constituyó la muestra del estudio. Se determinó la densidad óptica nuclear como indicador morfométrico del carcinoma papilar de tiroides. Resultados: El valor de la densidad óptica nuclear fue 1,14, considerado bajo. Conclusiones: Se determinó la densidad óptica nuclear del carcinoma papilar de tiroides en los casos estudiados, lo que puede contribuir a su diagnóstico histopatológico(AU)


Background: Papillary thyroid carcinoma is the most frequent cause of endocrine cancer. It is an histological variant with the best prognosis, however, sometimes it is a reason for significant diagnostic doubts with other variants of torpid evolution, which makes it difficult for a greater number of patients to benefit from an individualized and conservative treatment. For this reason, studies are developed in which more and more morphometric and densitometric procedures are added, which allow reducing the subjectivity in the histopathological diagnosis and could represent a tool of great value. Objective: To determine the nuclear optical density in papillary thyroid carcinoma. Method: A morphometric study of a series of cases was carried out with 12 patients with this histopathological diagnosis, attended at the Vladimir Ilich Lenin University Provincial Hospital. We chose 36 fields and 965 cell nuclei were measured, which constituted the study sample. Nuclear optical density was determined as a morphometric indicator of papillary thyroid carcinoma. Results: The value of nuclear optical density was 1, 14. It is considered low. Conclusion: Nuclear optical density of papillary thyroid carcinoma was determined in the studied cases that may contribute to histopathological diagnosis(AU)


Subject(s)
Humans , Male , Female , Thyroid Neoplasms/ultrastructure , Thyroid Cancer, Papillary/diagnosis , Prognosis , Cell Count/methods , Thyroid Cancer, Papillary/secondary
5.
Rev. cuba. oftalmol ; 33(2): e739, tab
Article in Spanish | LILACS, CUMED | ID: biblio-1139068

ABSTRACT

RESUMEN Objetivo: Relacionar la severidad del edema corneal poscirugía de catarata en pacientes con córnea guttata, considerados sin riesgo o bajo riesgo de edema posquirúrgico según densidad celular, con los parámetros de la microscopia endotelial. Métodos: Se realizó un estudio descriptivo, prospectivo de 42 pacientes con córnea guttata, considerados sin riesgo o bajo riesgo de edema posquirúrgico según la densidad celular, quienes fueron sometidos a la cirugía de catarata por el mismo cirujano en el Instituto Cubano de Oftalmología "Ramón Pando Ferrer", desde abril del año 2016 a diciembre de 2017. Se determinó la severidad del edema corneal y se relacionó con el grado de córnea guttata, así como con los parámetros de la microscopia endotelial. Resultados: El 52,4 por ciento fueron mayores de 70 años y el 64,3 por ciento mujeres. No hubo edema en el 54,8 por ciento en las primeras 24 horas, y fue en el 26,2 por ciento leve y en el 19,0 por ciento mínimo, donde predominó la córnea guttata grado 3 y presentaban un bajo riesgo prequirúrgico. Sin embargo, no hubo diferencias en relación con el polimegatismo y el pleomorfismo. Conclusiones: La severidad del edema corneal en pacientes con córnea guttata posfacoemulsificación a los siete días no se asocia con el polimegatismo, ni con el polimorfismo prequirúrgico, pero sí con el conteo endotelial prequirúrgico(AU)


ABSTRACT Objective: Determine the relationship between the severity of corneal edema in cornea guttata patients undergoing cataract surgery considered to be at no risk or low risk for postsurgical edema in terms of cell density, and endothelial microscopy parameters. Methods: A descriptive prospective study was conducted of 42 cornea guttata patients considered to be at no risk or low risk for postsurgical edema in terms of cell density, who underwent cataract surgery performed by the same surgeon at Ramón Pando Ferrer Cuban Institute of Ophthalmology from April 2016 to December 2017. Corneal edema severity was determined and related to cornea guttata grade and endothelial microscopy parameters. Results: Of the patients studied, 52.4 percent were aged over 70 years and 64.3 percent were women. Edema was not observed in 54.8 percent in the first 24 hours, whereas it was mild in 26.2 percent and minimum in 19.0 percent. Grade 3 cornea guttata and low presurgical risk prevailed. However, no differences were found in relation to polymegethism and pleomorphism. Conclusions: At seven days, corneal edema severity in cornea guttata patients undergoing phacoemulsification is not associated to polymegethism or presurgical polymorphism, but it as associated to the presurgical endothelial count(AU)


Subject(s)
Humans , Female , Aged , Cataract/etiology , Corneal Edema , Cell Count/methods , Phacoemulsification/methods , Observational Studies as Topic , Reference Parameters/adverse effects , Epidemiology, Descriptive , Prospective Studies , Microscopy/methods
6.
Rev. cuba. oftalmol ; 33(1): e831, ene.-mar. 2020. tab
Article in Spanish | LILACS, CUMED | ID: biblio-1126719

ABSTRACT

RESUMEN Objetivo: Determinar las características del endotelio corneal mediante microscopia endotelial. Métodos: Se realizó un estudio descriptivo y retrospectivo en córneas donantes del banco de ojos del Instituto Cubano de Oftalmología "Ramón Pando Ferrer" en el período de enero a junio del año 2019. La muestra estuvo conformada por 224 córneas donantes. Las variables del estudio fueron: edad, cirugías previas, gerontoxón, pterigion, defectos epiteliales, infiltrado corneal, opacidad corneal, edema, pigmentos endoteliales, guttas, desprendimiento de la Descemet, densidad celular, hexagonalidad y polimegatismo. Resultados: El gerontoxon fue el hallazgo más frecuente (56,69 por ciento); la densidad celular media fue de 2 501 cel/mm2; el coeficiente de variación medio fue 43,32 y la hexagonalidad media 50,02. La densidad celular endotelial entre 2 000 y 2 500 cel/mm2 fue más frecuente entre 60 y 79 años de edad (76,72 por ciento), mientras que entre 20 y 29 años todas las córneas donantes presentaron una densidad endotelial mayor de 2 500 cel/mm2. Conclusiones: En el examen biomicroscópico de la córnea donante fue más frecuente el gerontoxon. Por microscopia endotelial la mayoría de las córneas fueron aptas para trasplante corneal. Un endotelio corneal con densidad celular mayor de 2 500 cel/mm2 no es exclusivo de córneas con menos de 60 años de edad(AU)


ABSTRACT Objective: Determine the characteristics of the corneal endothelium by endothelial microscopy. Methods: A retrospective descriptive study was conducted of donor corneas from the eye bank of Ramón Pando Ferrer Cuban Institute of Ophthalmology from January to June 2019. The sample was 224 donor corneas. The variables analyzed were age, previous surgery, gerontoxon, pterygium, epithelial defects, corneal infiltrate, corneal opacity, edema, endothelial pigments, guttae, Descemet's membrane detachment, cell density, hexagonality and polymegethism. Results: Gerontoxon was the most common finding (56.69 percent), mean cell density was 2 501 cell/mm2, mean variation coefficient was 43.32 and mean hexagonality was 50.02. Endothelial cell density from 2 000 to 2 500 cell/mm2 was more common in the 60-79 years age group (76.72 percent), whereas in the 20-29 years age group all the donor corneas had an endothelial density above 2 500 cell/mm2. Conclusions: Gerontoxon was the most common finding in the biomicroscopic examination of the cornea. Endothelial microscopy found that most corneas were suitable for corneal transplantation. A corneal endothelium with a cell density above 2 500 cell/mm2 is not exclusive of corneas under 60 years of age(AU)


Subject(s)
Humans , Corneal Transplantation/adverse effects , Eye Banks/ethics , Microscopy/methods , Cell Count/trends , Epidemiology, Descriptive , Retrospective Studies , Endothelial Cells/pathology , Donor Selection/methods
7.
Rev. cuba. oftalmol ; 33(1): e692, ene.-mar. 2020. tab
Article in Spanish | LILACS, CUMED | ID: biblio-1126725

ABSTRACT

RESUMEN Objetivo: Identificar las características morfológicas del epitelio, el estroma y el endotelio corneal, así como la densidad celular de este último mediante el empleo de la microscopia confocal de la córnea en pacientes diabéticos. Métodos: Se realizó un estudio descriptivo, comparativo, en 90 ojos; 60 de ellos pertenecientes a pacientes diabéticos (30 tipo 1 y 30 tipo 2) y 30 ojos a pacientes supuestamente sanos. El estudio se realizó en el Instituto Cubano de Oftalmología "Ramón Pando Ferrer" entre enero del año 2012 y enero de 2017. Resultados: Predominó el sexo masculino con 66,7 por ciento en los pacientes con diabetes mellitus tipo 1; el sexo femenino en los pacientes con diabetes mellitus tipo 2 (60 por ciento) y aparentemente sanos (56,7 por ciento). En los pacientes con diabetes mellitus tipo 1 fueron más frecuentes las edades entre 45 y 54 años (33,3 por ciento) y entre 55 y 66 años en los pacientes con diabetes mellitus tipo 2 y aparentemente sanos con 60 y 40 por ciento respectivamente. La morfología del epitelio y el estroma corneal fue normal en el 86,7 y 87,3 por ciento respectivamente. Predominaron las alteraciones de la morfología endotelial en pacientes diabéticos tipo 1 (73,3 por ciento), así como el polimegatismo y el pleomorfismo (73,3 y 56,7 por ciento respectivamente) y la densidad celular más baja (2 222,76 células /mm2). Conclusiones: La ausencia de alteraciones morfológicas del epitelio y el estroma corneal y la presencia de polimegatismo y de pleomorfismo fueron los hallazgos más frecuentes(AU)


ABSTRACT Objective: Identify the morphological characteristics of the corneal epithelium, stroma and endothelium, as well as the cell density of the endothelium by means of confocal microscopy of the cornea in diabetic patients. Methods: A descriptive comparative study was conducted of 90 eyes: 60 from diabetic patients (30 type 1 and 30 type 2) and 30 from supposedly healthy patients, at Ramón Pando Ferrer Cuban Institute of Ophthalmology from January 2012 to January 2017. Results: A predominance was found of the male sex (66.7 percent) among patients with diabetes mellitus type 1 and of the female sex among patients with diabetes mellitus type 2 (60 percent) and seemingly healthy patients (56.7 percent). The most common age ranges were 45-54 years for patients with diabetes mellitus type 1 (33.3 percent) and 55-66 years for patients with diabetes mellitus type 2 (60 percent) and seemingly healthy patients (40 percent). Morphology of the corneal epithelium and stroma was normal in 86.7 percent and 87.3 percent, respectively. In type 1 diabetic patients there was a predominance of endothelial morphological alterations (73.3 percent), polymegethism and pleomorphism (73.3 percent and 56.7 percent, respectively) and the lowest cell density (2 222.76 cells /mm2). Conclusions: Absence of morphological alterations of the corneal epithelium and stroma, as well as the presence of polymegethism and pleomorphism were the most common findings(AU)


Subject(s)
Humans , Male , Female , Adolescent , Adult , Middle Aged , Cell Count/methods , Cornea/abnormalities , Diabetes Mellitus, Type 1/etiology , Diabetes Mellitus, Type 2/etiology , Epidemiology, Descriptive , Microscopy, Confocal/methods
8.
Article in English | WPRIM | ID: wpr-762475

ABSTRACT

BACKGROUND: Automated cellular analyzers are expected to improve the analytical performance in body fluid (BF) analysis. We evaluated the analytical performance of three automated cellular analyzers and established optimum reflex analysis guidelines. METHODS: A total of 542 BF samples (88 cerebrospinal fluid [CSF] samples and 454 non-CSF samples) were examined using manual counting and three automated cellular analyzers: UniCel DxH 800 (Beckman Coulter), XN-350 (Sysmex), and UF-5000 (Sysmex). Additionally, 2,779 BF analysis results were retrospectively reviewed. For malignant cell analysis, the receiver operating characteristic (ROC) curve was used, and the detection of high fluorescence-BF cells (HF-BFs) using the XN-350 analyzer was compared with cytology results. RESULTS: All three analyzers showed good agreement for total nucleated cell (TNC) and red blood cell (RBC) counts, except for the RBC count in CSF samples using the UniCel DxH 800. However, variable degrees of differences were observed during differential cell counting. For malignant cell analysis, the area under the curve was 0.63 for the XN-350 analyzer and 0.76 for manual counting. We established our own reflex analysis guidelines as follows: HF-BFs 83.4/100 WBCs or eosinophils >3.8% are the criteria for mandatory double check confirmation with 1,000× magnification examination. CONCLUSIONS: The three automated analyzers showed good analytical performances. Application of reflex analysis guidelines is recommended for eosinophils and HF-BFs, and manual confirmation is warranted.


Subject(s)
Body Fluids , Cell Count , Cerebrospinal Fluid , Eosinophils , Erythrocytes , Leukocytes , Reflex , Retrospective Studies , ROC Curve
9.
Arq. Inst. Biol ; 87: e0802018, 2020. tab
Article in English | ID: biblio-1118053

ABSTRACT

This research evaluated the effect of milking on the physical exam of the mammary gland (MG) and milk examination in Saanen goats. Six properties were selected, four farms were used after evaluation of criteria selection and distributed in two groups according to the milking method: manual or mechanical. The physical examination of MG was performed using the techniques of inspection and palpation, in addition to the examination of the milk by strip cup, California Mastitis Test, somatic cell count, and bacteriological exam. It was possible to detect an association between the milking method with the most of physical exam of the MG: inspection of the MG (p = 0.001), inspection of the teat (p = 0.002), palpation of the MG (p = 0.054) and palpation of the teat (p = 0.036). The machine milking had an association with the reduction of the volume of MG (OR = 6.00), reduction of the teat size (OR = 16.19), and firm consistency of mammary parenchyma (OR = 2.39). The use of machine milking represented a less risk for an increase of the volume of the MG volume (OR = 0.288) and the presence of cisternitis (OR = 0.490). The association between the SCC and the type of milking was also detected (p = 0.002). Machine milking was associated with changesin the physical exam of MG and milk examination compatible with traumatic lesions. This information indicates inappropriate use of milking equipment in the dairy goat's properties.(AU)


Esta pesquisa avaliou o efeito da ordenha sobre o exame físico da glândula mamária (GM) e do leite em cabras Saanen. Seis propriedades foram selecionadas, quatro fazendas foram utilizadas após avaliação da seleção dos critérios e distribuídas em dois grupos de acordo com o método de ordenha: manual ou mecânico. O exame físico da GM foi realizado utilizando as técnicas de inspeção e palpação, além do exame do leite pelo teste da caneca de fundo escuro, California Mastitis Test, contagem de células somáticas e exame bacteriológico. Foi possível detectar uma associação entre o método de ordenha com a maioria dos exames físicos da GM: inspeção da GM (p = 0,001), inspeção do teto (p = 0,002), palpação da GM (p = 0,054) e palpação do teto (p = 0,036). A ordenha mecânica associou-se com a redução do volume de GM (OR = 6,00), redução do tamanho do teto (OR = 16,19) e consistência firme do parênquima mamário (OR = 2,39). O uso da ordenha mecânica representou menor risco para o aumento do volume do volume da GM (OR = 0,288) e presença da cisternite (OR = 0,490). Também foi detectada a associação entre a CCS e o tipo de ordenha (p = 0,002). A ordenha mecânica foi associada com as alterações no exame físico de GM e do leite compatíveis com lesões traumáticas. Essas informações indicam o uso inadequado do equipamento de ordenha na criação de cabras leiteiras.(AU)


Subject(s)
Cattle , Palpation , Mammary Glands, Animal , Physical Examination/veterinary , Cell Count/methods , Milk , Encephalitis, California/diagnosis
10.
Article in Chinese | WPRIM | ID: wpr-828549

ABSTRACT

OBJECTIVE@#To investigate the effect of corticosteroids therapy on the inflammatory response in a critically ill coronavirus disease 2019 (COVID-19) patient.@*METHODS@#A 55-year old female patient with critical ill COVID-19 was admitted in Taizhou Hospital on January 19, 2020. The patient was treated with methylprednisolone 80 mg on the 2nd day after admission. Thereafter, the dose was adjusted in a timely manner and the therapy lasted for 13 days. The peripheral lymphocyte subsets (CD3T, CD4 T, CD8 T, NK cells, B cells), as well as serum levels of lymphocyte factors (IL-2, IL-4, IL-6, IL-10, TNF-α, IFN-γ) were dynamically monitored.@*RESULTS@#On D1 of admission, the numbers of peripheral blood CD3 T, CD4 T, CD8 T, and NK cells were significantly lower than the normal range. With the improvement of the disease, the numbers of CD3 T, CD8 T and CD4 T cells gradually recovered and showed a linear growth trend (linear fitting equation: =18.59+109.4, <0.05). On D2 of admission, the patient's IL-6 and IL-10 levels were significantly higher than normal values, IFN-γ was at a normal high value, and then rapidly decreased; IL-2, IL-4, and TNF-α were all in the normal range. On the D6 and D7, the IL-6 and IL-10 decreased to the normal range for the first time. On the D18, the sputum virus nucleic acid test was negative for the first time, and the fecal virus nucleic acid test was still positive; on the D20 the sputum and fecal virus nucleic acid test were both negative. On D34, the patient recovered and was discharged. At the discharge the muscle strength score of the patient was 44 and the daily life ability evaluation was 90.@*CONCLUSIONS@#In the absence of effective antiviral drugs, early use of appropriate doses of corticosteroids in critically ill patient with COVID-19 can quickly alleviate inflammatory response and improve clinical symptoms, however, it may reduce the number of T cells, and to adjust the dose in time is necessary.


Subject(s)
Betacoronavirus , Cell Count , Coronavirus Infections , Diagnosis , Drug Therapy , Allergy and Immunology , Critical Illness , Cytokines , Blood , Female , Humans , Methylprednisolone , Middle Aged , Pandemics , Pneumonia, Viral , Diagnosis , Drug Therapy , Allergy and Immunology , T-Lymphocyte Subsets , Treatment Outcome
11.
Article in Chinese | WPRIM | ID: wpr-880795

ABSTRACT

OBJECTIVE@#To investigate the characteristics of immunophenotypes and expressions of non-myeloid differentiation antigens in acute myeloid leukemia (AML) and their value in diagnosis and prognostic evaluation of AML.@*METHODS@#We examined the immunophenotypes of 109 patients with AML using BD FACSCalibur flow cytometry and analyzed the association of the immunophenotypes and expressions of non-myeloid differentiation antigens with the prognosis and complete remission (CR) rate of the patients.@*RESULTS@#Immunophenotype analysis showed that the positivity rates of the myeloid differentiation antigens of AML cells decreased in the order of CD13, CD117, CD33, MPO and CD15; the positivity rates of CD117, CD13, CD33 and MPO did not differ significantly (@*CONCLUSIONS@#Immunophenotyping and analysis of non-myeloid differentiation antigens can be of great clinical significance for the diagnosis and prognostic evaluation of AML, and serve also as one of the important bases for the diagnosis and treatment of AML.


Subject(s)
Cell Count , Flow Cytometry , Humans , Immunophenotyping , Leukemia, Myeloid, Acute , Prognosis
12.
Journal of Experimental Hematology ; (6): 1357-1362, 2020.
Article in Chinese | WPRIM | ID: wpr-827112

ABSTRACT

OBJECTIVE@#To explore the method for inducing the differentiation of bone marrow cells into megakaryocytes in vitro so as to use for evaluating the activity of traditional Chinese medicines.@*METHODS@#The bone marrow cells were separated from femurs and tibias of mice. The experiments were divided into 4 groups: control (no adding cytokines), TPO (adding 50 ng/ml TPO), TPO+SCF (50 ng/ml+50 ng/ml) and TPO+SCF+IL-6+IL-9 (50 ng/ml+50 ng/ml+20 ng/ml+20 ng/ml). The bone marrow cells in 4 groups were cultured in vitro for 6 d. Then the cell growth status was observed by the inverted microscopy, and the cell count was detected by using the automatic cell counter. The ratio and absolute count of megakaryocytes were detected by flow cytometry.@*RESULTS@#Compared with control, three induction methods could stimulate the differentiation of bone marrow cells into megakaryocytes in vitro. TPO could slightly enhance the differentiation of bone marrow cells into megakaryocytes. Both the combination of TPO and SCF, and the combination of TPO, SCF, IL-6 and IL-9 could intensively stimulate proliferation of bone morrow cells and promote the differentiation of bone marrow cells into megakaryocytes. The addition of IL-6 and IL-9 could decrease the proliferation of non-megakaryocytes, but promote the differentiation of bone marrow cells into megakaryocytes.@*CONCLUSION@#The optimized differentiation of bone marrow cells into megakaryocytes has been completed by co-induction regimen of TPO, SCF, IL-6 and IL-9, which can be used to screen and evaluate traditional Chinese medicines promoting formation of platelets.


Subject(s)
Animals , Bone Marrow Cells , Cell Count , Cell Differentiation , Cell Division , Cells, Cultured , Interleukin-3 , Megakaryocytes , Mice , Stem Cell Factor , Thrombopoietin
13.
Chinese Journal of Biotechnology ; (12): 1209-1215, 2020.
Article in Chinese | WPRIM | ID: wpr-826857

ABSTRACT

Bioreactors have been central in monoclonal antibodies and vaccines manufacturing by mammalian cells in suspension culture. Numerical simulation of five impeller combinations in a stirred bioreactor was conducted, and characteristics of velocity vectors, distributions of gas hold-up, distributions of shear rate in the bioreactor using 5 impeller combinations were numerically elucidated. In addition, genetically engineered CHO cells were cultivated in bioreactor installed with 5 different impeller combinations in fed-batch culture mode. The cell growth and antibody level were directly related to the maximum shear rate in the bioreactor, and the highest viable cell density and the peak antibody level were achieved in FBMI3 impeller combination, indicating that CHO cells are sensitive to shear force produced by impeller movement when cells were cultivated in bioreactor at large scale, and the maximum shear rate would play key roles in scaling-up of bioreactor at industrial scale.


Subject(s)
Animals , Batch Cell Culture Techniques , Bioreactors , Reference Standards , CHO Cells , Cell Count , Computer Simulation , Cricetinae , Cricetulus , Industrial Microbiology , Methods
14.
Int. j. high dilution res ; 19(4): 25-34, 2020.
Article in English | LILACS, HomeoIndex | ID: biblio-1146572

ABSTRACT

BackgroundBreast cancer has been considered a public health problem and homeopathic treatments are becoming increasingly recommended due to its ways of action and absence of adverse effects. MCF-7 is an adenocarcinoma of human breast cell line useful as preclinicalmodel to screen therapeutic agents such as ultra-diluted Viscum album, an European plant which extract is commonly used in cancer therapy. AIMS MCF-7 and mesenchymal stem cells (MSC) were used to evaluate the in vitrocytotoxicity of homoeopathic Viscum album 1x10-3(VA3X). Methodscells were cultured for 24 hours in controlled environment (37.5oC and 5% CO2) in 96-well plates. After this time, VA3X was added to the culture medium in concentrations varying from 10 to 100 L/mL.A control group was maintained with culture medium only. Cells were cultivated for 48 hours in these conditions for evaluation of cell viability by MTT assay. ResultsHigher cytotoxicity was observed in MCF-7 when compared to MSC, as the lower concentration of VA3X was capable of inducing tumor cell death and not healthy cell death. The MTT assay results were that 42 L/mL of VA3X reduced MCF-7 cells viability to 50% and 62 L/mL reduced MSC cells to the same percentage, what means that tumor cells are more sensible to VA3X than heathy cells. ConclusionViscum albumpresented higher cytotoxic action on human breast cancer cell line culture than on mesenchymal stem cells. This medicine is extensively used against cancer, and the use of the homoeopathic form of it brings new possibilities as no or fewer adverse effects would be present.(AU)


Subject(s)
Humans , Breast Neoplasms/pathology , Adenocarcinoma/pathology , Homeopathic Therapeutics , Viscum album/toxicity , Mesenchymal Stem Cells/drug effects , MCF-7 Cells/drug effects , Breast Neoplasms/drug therapy , Adenocarcinoma/drug therapy , Cell Count , Cell Survival , Cell Culture Techniques
15.
J. appl. oral sci ; 28: e20190140, 2020. tab, graf
Article in English | LILACS, BBO | ID: biblio-1056590

ABSTRACT

Abstract Objective: The goal of the present study was to determine the effect of systemic and topical ozone application on alveolar bone loss (ABL) by evaluating the effect of Hypoxia-inducible factor −1 alpha (HIF-1-α) and receptor activator of NF-kB ligand (RANKL)-positive cells on histopathological and immunohistochemical changes in a rat periodontitis model. Methodology: Thirty male Wistar rats were divided into three groups: 1) Group C (control group); 2) Group SO (systemic ozone group) and 3) Group TO (topical ozone group). Experimental periodontitis was induced with a 3/0 silk suture placed at the mandibular left first molars of rats, and the suture was removed 14 days later. Ozone gas was injected intraperitoneally (0.7 mg/kg) in SO group. Topical ozone application protocol was performed using an ozone generator at 80% concentration (4th grade) 90- degree probe for the duration of 30 s. Both ozone applications were carried out for two weeks at intervals of two days. Histomorphometric and immunohistochemical analysis were performed. Results: ABL was significantly lower in Group SO compared to Group C (p: 0.0052). HIF-1α- positive cells were significantly lower in Group TO than in Group C (p: 0.0043). RANKL-positive cells were significantly lower in Group SO and in Group TO compared to the control group (p: 0.0033, p: 0.0075, respectively). Conclusion: Both ozone applications decreased RANKL-positive cell counts, TO application decreased HIF-1-α positive cells counts, and SO application was found to be more effective in reducing ABL compared to control group.


Subject(s)
Animals , Male , Ozone/administration & dosage , Periodontitis/pathology , Periodontitis/drug therapy , Alveolar Bone Loss/pathology , Alveolar Bone Loss/drug therapy , Hypoxia-Inducible Factor 1, alpha Subunit/analysis , Immunohistochemistry , Cell Count , Reproducibility of Results , Administration, Topical , Treatment Outcome , Rats, Wistar
16.
Einstein (Säo Paulo) ; 18: eAO5105, 2020. tab, graf
Article in English | LILACS | ID: biblio-1090040

ABSTRACT

ABSTRACT Objective To evaluate the density of anti-galectin-3-immunostained cells, collagen percentage, mast cell density and presence of pathological processes in intestinal muscle biopsies of patients. Methods Thirty-five patients who underwent intestinal biopsy were selected from 1997 to 2015. Patients were divided into three groups: chagasic patients with mucosal lesion (n=13), chagasic patients with intact mucosa (n=12) and non-chagasic patients with no mucosal lesion (n=10). Histological processing of the biopsied fragments and immunohistochemistry for galectin-3 were performed. Additional sections were stained with hematoxylin and eosin to evaluate the general pathological processes, picrosirius for evaluation of collagen and toluidine blue to evaluate the mast cell density. Results Patients of mucosal lesion group had a significantly higher frequency of ganglionitis and myositis when compared to the chagasic patients with intact mucosa and non-chagasic group. The density of anti-galectin-3-immunostained cells was significantly higher in the chagasic patients with intact mucosa group when compared to the non-chagasic group. The group of chagasic patients with intact mucosa presented a higher percentage of collagen in relation to the patients with mucosal lesion and to the non-chagasic group, with a significant difference. There was no significant difference in mast cell density among the three groups. Conclusion The higher density of anti-galectin-3-immunostained cells in patients in the chagasic patients with intact mucosa group suggested the need for greater attention in clinical evaluation of these patients, since this protein is associated with neoplastic transformation and progression.


RESUMO Objetivo Avaliar a densidade de células imunomarcadas por anti-galectina-3, a percentagem de colágeno, a densidade de mastócitos e a presença de processos patológicos na musculatura intestinal de pacientes biopsiados. Métodos Foram selecionados 35 pacientes submetidos à biópsia de intestino entre 1997 a 2015. Os pacientes foram divididos em três grupos: chagásicos com lesão de mucosa (n=13), chagásicos com mucosa íntegra (n=12) e não chagásicos sem lesão de mucosa (n=10). Foram realizados processamento histológico dos fragmentos biopsiados e imunohistoquímica para galectina-3. Cortes adicionais foram corados por hematoxilina e eosina, para avaliar os processos patológicos gerais, pelo picrosírius, para avaliação do colágeno, e pelo azul de toluidina, para avaliar a densidade de mastócitos. Resultados Os pacientes do grupo chagásicos com lesão de mucosa apresentaram frequência significativamente maior de ganglionite e miosite quando comparados aos dos grupos chagásico com mucosa íntegra e não chagásicos. A densidade das células imunomarcadas por anti-galectina-3 foi significativamente maior no grupo chagásicos com mucosa íntegra quando comparada ao grupo não chagásico. O grupo de chagásicos com mucosa íntegra apresentou maior percentagem de colágeno em relação aos grupos chagásicos com mucosa lesada e ao grupo de não chagásicos, com diferença significativa. Não houve diferença significativa com relação à densidade de mastócitos entre os três grupos. Conclusão A maior densidade de células imunomarcadas por anti-galectina-3 nos pacientes do grupo chagásico com mucosa íntegra sugere a necessidade de maior atenção na avaliação clínica desses pacientes, uma vez que essa proteína está associada com transformação e progressão neoplásica.


Subject(s)
Humans , Male , Female , Adult , Aged , Aged, 80 and over , Colonoscopy/methods , Chagas Disease/pathology , Galectin 3/analysis , Intestinal Mucosa/pathology , Megacolon/pathology , Antibodies, Monoclonal/analysis , Biopsy , Fibrosis , Immunohistochemistry , Case-Control Studies , Cell Count , Retrospective Studies , Analysis of Variance , Collagen/analysis , Statistics, Nonparametric , Galectin 3/immunology , Mast Cells/pathology , Middle Aged , Myositis/pathology
17.
Pesqui. vet. bras ; 39(9): 715-722, Sept. 2019. tab
Article in English | ID: biblio-1040750

ABSTRACT

Bovine mastitis has a negative impact on milk production and can pose risks to public health. The present study aimed to evaluate the quality of bovine milk from small farms in the Botucatu/SP region. Somatic cell counts (SCC), identification of pathogens involved in mastitis, and sensitivity antimicrobial profile of staphylococci isolated were performed. The presence of enterotoxin encoding genes in isolates of staphylococci obtained from milk was investigated. Milk samples from individual mammary quarters of cows were submitted to the California mastitis test (CMT) and SCC. Of the 239 dairy cows from 21 dairy herds evaluated (mean = 11.4 animals/property), two cows (0.8%) presented clinical mastitis and 86 (35.9%) subclinical mastitis. Bacterial culture was performed in 177 quarter milk samples. Staphylococci were identified in 55 (31.1%), corynebacteria in 45 (25.4%), streptococci in 25 (14.1%) and coliforms in four (2.3%) milk samples. Average SCC from culture-positive samples was 1598x103 cells/mL, in case of staphylococci was 1362x103 cells/ml, streptococci was 2857x103 cells/mL, corynebacteria was 976x103 cells/mL and in the cases of coliforms 1161x103 cells/mL were obtained. Staphylococci showed a high sensitivity (>95%) to cephalothin, cotrimoxazole, enrofloxacin, and gentamicin, with a 41.2% resistance to penicillin and 11.8% to oxacillin. Both coagulase positive (CPS) and negative staphylococci (CNS) carried genes encoding enterotoxins in 21.6% of the first group and 41.9% in the second. The sea gene was the most detected 45.8% (n=24) between them, followed by seb with 29.2% and sec with 25.0%. The sed gene was not identified. We highlight the potential risk to public health in the possibility of strains of Staphylococcus spp. enterotoxin-producing genes that can cause staphylococcal food poisoning.(AU)


A mastite bovina impacta negativamente a produção leiteira e pode acarretar riscos à saúde pública. O presente estudo teve como objetivo a avaliação da qualidade do leite bovino proveniente de pequenas propriedades na região de Botucatu/SP. Foi realizada a contagem de células somáticas (CCS), identificação dos patógenos envolvidos nas mastites, e realizado o perfil de sensibilidade aos antimicrobianos dos estafilococos isolados. Pesquisou-se a presença de genes codificadores de enterotoxinas em isolados de estafilococos obtidos a partir do leite mastítico. Amostras de leite de quartos mamários individuais de vacas foram submetidas ao "California mastitis test" (CMT) e à CCS. Das 239 vacas em lactação provenientes de 21 rebanhos leiteiros avaliados (média = 11,4 animais/propriedade), dois (0,8%) animais apresentaram mastite clínica e, 86 (35,9%) mastite subclínica. 177 amostras de leite foram cultivadas em ágar sangue bovino 5% e ágar MacConckey e obteve-se 55 (31,1%) Staphylococcus spp., 25 (14,1%) Streptococcus spp., 45 (25,4%) Corynebacterium spp. e quatro (2,3%) coliformes. A média da CCS das amostras procedentes de todos os quartos mamários infectados avaliados foi de 1598x103 células/mL, enquanto que nos casos que foram isolados Staphylococcus spp. foi de 1362x103 células/mL, Streptococcus spp. 2857x103 células/mL, Corynebacterium spp. de 976x103 células/mL e nos casos de coliformes 1161x103 células/mL. Os estafilococos revelaram grande sensibilidade (>95%) à cefalotina, cotrimoxazol, enrofloxacina e gentamicina, com resistência de 41,2% à penicilina e 11,8% à oxacilina. Tanto estafilococos coagulase positivos (ECP) como negativos (ECN) revelaram genes codificadores de enterotoxinas em 21,6% do primeiro grupo e 41,9% no segundo. O gene sea foi o mais detectado 45,8% (n=24), seguido pelo seb com 29,2% e sec com 25,0%. O gene codificador da sed não foi identificado. Frente aos resultados, destaca-se o risco potencial à saúde pública pela possibilidade de veiculação de linhagens de Staphylococcus spp. carreadores de genes produtores de enterotoxinas, podendo ocasionar toxi-infecções alimentares.(AU)


Subject(s)
Staphylococcus/isolation & purification , Cell Count/veterinary , Milk/microbiology , Mastitis, Bovine/diagnosis , Cattle/microbiology , Dairying
18.
Pesqui. vet. bras ; 39(8): 606-613, Aug. 2019. tab
Article in English | ID: biblio-1040728

ABSTRACT

High bulk milk somatic cell counts (BMSCC) are indicative of failures related to the control of mastitis in the herd, which compromises the quality of the milk and generates great losses for the producers and for the industry. A case-control study was carried out in dairy herds in the Campos das Vertentes region, Minas Gerais State, Brazil, in order to contribute to the knowledge of the risk factors involved with elevated BMSCC. The study involved 46 dairy herds, of which 30 were considered cases (BMSCC ≥700,000 cells/mL of milk) and 16 control farms (BMSCC ≤200,000 cells/mL of milk). Sixteen qualitative variables and four quantitative variables were analyzed. The results showed that the risk factors for BMSCC ≥700,000 cells/mL were the presence of Staphylococcus aureus and Streptococcus agalactiae pathogens in bulk milk, non-use of pre and post-dipping, non-use of disposable paper towel for drying of mammary glands, non-monitoring of mastitis in the herd by means of California Mastitis Test (CMT) or individual somatic cell counts (SCC), non-implementation of the milking line and therapy of dry cows and failures in hygiene of teats and udders before milking. Moderate correlations were also observed between the elevation of BMSCC and counts of S. aureus and BMSCC and counts S. agalactiae in bulk milk, and a moderate correlation between S. aureus and S. agalactiae counts in bulk milk. Failures with regard to the maintenance and use of milking equipment, including manual pressure application in milking assemblies, unregulated milking vacuum pressure, and vacuum loss during milking, and maintenance failures of the milking machine and bulk milk tank were also pointed out as important risk factors of BMSCC elevation. The results of this study provided subsidies for the elaboration of more effective programs for mastitis control and improvement of raw milk quality, reducing the losses caused by the disease to producers and industry.(AU)


Altas contagens de células somáticas no leite do tanque (CCSt) são indicativas de falhas relacionadas com o controle da mastite no rebanho, o que compromete a qualidade do leite e gera grandes perdas para os produtores e para a indústria. Visando identificar os fatores de risco envolvidos com a CCSt elevada, foi realizado um estudo de caso-controle em rebanhos bovinos leiteiros da região de Campos das Vertentes, em Minas Gerais. O estudo envolveu 46 propriedades, das quais 30 foram consideradas casos (CCSt ≥700.000 cels/mL de leite) e 16 propriedades controles (CCSt ≤200.000 cels/mL de leite). Foram analisadas 16 variáveis qualitativas e quatro variáveis quantitativas. Os resultados demonstraram que os fatores de risco para valores de CCSt ≥700.000 cels/mL de leite foram a presença dos patógenos Staphylococcus aureus e Streptococcus agalactiae, não utilização do pré e de pós-dipping, não utilização de papel toalha descartável para a secagem dos tetos, não monitoramento da mastite por meio do California Mastitis Test (CMT) ou CCS individual, não implementação da linha de ordenha e da terapia de vacas secas e falhas na higiene de tetos e de úbere antes da ordenha. Também se observaram correlações moderadas entre a CCSt e as contagens de S. aureus e entre CCSt e as contagens de S. agalactiae, e correlação moderada entre as contagens de S. aureus e de S. agalactiae no leite do tanque. Falhas com relação à manutenção e utilização dos equipamentos de ordenha, aplicação de pressão manual nos conjuntos da ordenha, pressão de vácuo da ordenha desregulada, perda de vácuo durante a ordenha e falhas de manutenção da ordenhadeira e do tanque de expansão foram também apontadas como fatores de risco para elevação da CCSt. Os resultados deste estudo possibilitaram identificar fatores de risco importantes para contagens elevadas de CCSt que poderão fornecer subsídios para a elaboração de programas de controle mais efetivos para a mastite e para a melhoria da qualidade do leite, mitigando o impacto que a doença causa para os produtores e para a indústria.(AU)


Subject(s)
Animals , Female , Cattle , Cell Count/veterinary , Risk Factors , Milk/microbiology , Mastitis, Bovine , Brazil , Case-Control Studies , Dairying
19.
Int. j. morphol ; 37(2): 576-583, June 2019. graf
Article in English | LILACS | ID: biblio-1002261

ABSTRACT

Antidepressants use during pregnancy was associated with an increased risk of autism spectrum disorders. Animal models based on early life alterations in serotonin availability replicate some of the anatomical and behavioral abnormalities observed in autistic individuals. In recent years there has been a growing interest in the possible role of the hippocampus in autism. The aim of study is to examine the effects of neonatal antidepressant (CTM) exposure during a sensitive period of brain development on pyramidal and granule cells density of hippocampal formation. We examined the pyramidal and granular cells density of dorsal hippocampus using Nissl stained sections obtained from neonatal citalopram (CTM) exposed rats (5 mg/kg, twice daily, s.c.), from postnatal day 8 to 21 (PN8-21), saline and non-exposed rats. The density of pyramidal cells was significantly increased by 10.2 % in CA1, 10.6 % in CA3 and 13.2 % in CA4 in CTM treated compared with non-treated or saline treated animals (p<0.0001). The density of granule cells in the dentate gyrus was significantly increased by 12.0 % in CTM treated compared with non-treated or saline treated animals (p<0.0001). These findings were obtained only from male rats, suggesting a sexual dimorphism in neural development after SSRI exposure. These data suggest that the neonatal exposure to CTM may induce long-lasting changes in the hippcampal formation in adults, and such effects appear to preferentially target males.


El uso de antidepresivos durante el embarazo se asoció con un mayor riesgo de trastornos del espectro autista. Los modelos animales basados en alteraciones tempranas de la vida en la disponibilidad de serotonina replican algunas de las anomalías anatómicas y de comportamiento observadas en individuos autistas. En los últimos años ha habido un interés creciente en el posible papel del hipocampo en el autismo. El objetivo del estudio fue examinar los efectos de la exposición al antidepresivo neonatal (CTM) durante un período sensible del desarrollo cerebral en la densidad de las células piramidales y granulares de la formación del hipocampo. Examinamos la densidad de las células piramidales y granulares del hipocampo dorsal utilizando secciones teñidas con Nissl obtenidas de ratas expuestas al citalopram neonatal (CTM) (5 mg / kg, dos veces al día, sc), desde el día postnatal 8 a 21 (PN8-21), solución salina y ratas no expuestas. La densidad de células piramidales se incrementó significativamente en un 10,2 % en CA1, 10,6 % en CA3 y 13,2 % en CA4 en CTM tratados en comparación con animales no tratados o tratados con solución salina (p <0,0001). La densidad de células granulares en el giro dentado aumentó significativamente en un 12,0 % en los animales tratados con CTM en comparación con los animales no tratados o tratados con solución salina (p <0,0001). Estos hallazgos se obtuvieron solo en ratas macho, lo que sugiere un dimorfismo sexual en el desarrollo neural después de la exposición a ISRS. Estos datos sugieren que la exposición neonatal a la CTM puede inducir cambios de larga duración en la formación del hipocampo en adultos, y estos efectos parecen dirigirse preferentemente a los machos.


Subject(s)
Animals , Male , Female , Pregnancy , Rats , Prenatal Exposure Delayed Effects , Citalopram/pharmacology , Hippocampus/drug effects , Antidepressive Agents/pharmacology , Autistic Disorder/chemically induced , Behavior, Animal/drug effects , Citalopram/adverse effects , Cell Count , Sex Factors , Rats, Sprague-Dawley , Pyramidal Cells/drug effects , Hippocampus/cytology , Hippocampus/growth & development , Animals, Newborn , Antidepressive Agents/adverse effects
20.
An. bras. dermatol ; 94(3): 320-326, May-June 2019. tab, graf
Article in English | LILACS | ID: biblio-1011118

ABSTRACT

Abstract: Background: Behçet's disease is a multisystemic vasculitis, associated with vascular endothelial dysfunction. Currently, the prognosis is unpredictable, because there is still no valid laboratory marker indicating the disease activity in Behçet's disease. Endothelial progenitor cells and circulating endothelial cells are newly introduced hematological markers which are presumed to take part in the pathogenesis of vasculitis. Objectives: To evaluate the levels of endothelial progenitor cells and subtypes and circulating endothelial cells in patients with Behçet's disease and to describe their relationship with the disease activity. Methods: A total of 45 patients with Behçet's disease and 28 healthy controls were included in the study. Endothelial progenitor cells (CD34+CD133+KDR+ as early endothelial progenitor cells and CD34+KDR+ as late endothelial progenitor cells), and circulating endothelial cells (CD34+CD133+) were measured by flow cytometry. Results: The mean plasma level of endothelial progenitor cells and circulating endothelial cells, vascular endothelial growth factor, matrix metalloproteinase-9, C-reactive protein, and erythrocyte sedimentation rate were significantly higher in patients with Behçet's disease. All of these parameters except circulating endothelial cells were also found to be higher in patients with active disease than in patients with inactive disease. Early endothelial progenitor cells showed significant correlations with C-reactive protein and circulating endothelial cells. Study Limitations: The cross-sectional nature of the study and patient characteristics such as being under treatment, which can affect endothelial progenitor cells numbers. Conclusion: The increase in endothelial progenitor cells may play an essential role in the repair of endothelial injury in Behçet's disease, especially in the active period of the disease. Thus, endothelial progenitor cells can indicate the disease activity. In addition, endothelial progenitor cells and circulating endothelial cells can be used as endothelial repair and injury markers for Behçet's disease, respectively.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Biomarkers/blood , Behcet Syndrome/blood , Endothelial Progenitor Cells/metabolism , Vasculitis , C-Reactive Protein/analysis , Case-Control Studies , Cell Count , Behcet Syndrome/complications , Cross-Sectional Studies , Vascular Endothelial Growth Factor A , Flow Cytometry
SELECTION OF CITATIONS
SEARCH DETAIL