Partial regression of peripapillary myelinated nerve fibers after non-arteritic anterior ischemic optic neuropathy / Regressão parcial das fibras nervosas peripapilares mielinizadas após neuropatia óptica isquêmica anterior não arterítica

ABSTRACT A 71-year-old woman presented a non-arteritic anterior ischemic optic neuropathy in an optic nerve with previously registered superonasal peripapillary myelinated nerve fibers. Her past medical history was significant for controlled systemic hypertension, hyperlipidemia, and diabetes mellitus. The physiologic cup was absent in both optic discs. Non-arteritic anterior ischemic optic neuropathy mainly affected the temporal and inferior sectors of the peripapillary retinal nerve fiber layer, as could be demonstrated by retinal nerve fiber layer optical coherence tomography and optic disc optical coherence tomography angiography. Unlike other published reports, just a slight regression of the myelinated nerve fibers was observed after 1 year of follow-up. This occurred because ischemia mainly affected the temporal and inferior peripapillary sectors, whereas myelinated nerve fibers were superonasal to the optic disc.

RESUMO Uma mulher de 71 anos de idade apresentou neuropatia óptica isquêmica anterior não arterítica no nervo óptico com fibras nervosas peripapilares mielinizadas previamente registradas. Seu histórico médico foi significativo para hipertensão arterial sistêmica controlada, hiperlipidemia e diabetes mellitus. Em ambos os discos ópticos, a tacícula fisiológica esteve ausente. A neuropatia óptica isquêmica anterior não arterítica afetou principalmente os setores temporal e inferior da camada de fibras nervosas da retina peripapilar, como demonstrado pela tomografia de coerência óptica da camada de fibras nervosas da retina e pela angiotomografia de coerência óptica do disco óptico. Ao contrário de outros relatórios publicados, apenas uma ligeira regressão das fibras nervosas mielinizadas foi observada após um ano de acompanhamento. Isto pode ser explicado pelo fato da isquemia ter afetado principalmente os setores temporal e inferior peripapilares, enquanto as fibras nervosas de mielina eram nasal superior ao disco óptico.

Longitudinal evaluation of RTVue optical coherence tomography in patients with glaucoma and suspected glaucoma and stable visual fields / Avaliação longitudinal da tomografia de coerência óptica RTVue em pacientes glaucomatosos e suspeitos de glaucoma com campos visuais estáveis

ABSTRACT Purpose: To longitudinally compare isolated structural parameters obtained using RTVue optical coherence tomography in patients with glaucoma and suspected glaucoma with stable visual fields. Methods: All patients were required to have a reliable SITA Standard 24-2 Humphrey Visual Field test. Visual field stability was defined as having <5 points with p<5% and/or having no points with p<1% and/or p<0.05% in the glaucoma progression analysis comparison graph. Furthermore, the glaucoma assessment strategy was used in optical coherence tomography. Results: The study included 75 eyes from 75 patients, 43 of which had glaucoma and 32 had suspected glaucoma. The mean visual field intervals were 29.57 ± 9.65 months between the first and third tests. No visual field parameter variations (mean deviation, pattern standard deviation, and visual field index) and no retinal nerve fiber layer or optic disk parameter variations between the first and third tests were observed (p>0.05 for all), and no retinal nerve fiber layer parameter variations throughout the study were observed, except for optic disk parameters presenting with cup volume changes (p=0.004). However, ganglion complex cells presented a progressively decreased average ganglion cell complex parameter, with a variability of -0.98% ± 3.71% (p=0.04) between the first and third tests. By contrast, the global loss volume progressively increased throughout the study, with a variability of 14.71% ± 44.52% (p=0.04) between the first and third tests. The inferior ganglion cell complex parameter was significantly decreased between the first and third tests (p=0.02). Conclusion: The present findings suggest that patients with glaucoma or suspected glaucoma with stable visual fields may present structural ganglion complex cell progression as assessed using RTVue optical coherence tomography.

RESUMO Objetivo: Comparar longitudinalmente os parâmetros estruturais isolados obtidos através da tomografia de coerência óptica RTVue em pacientes glaucomatosos e suspeitos de glaucoma com campos visuais estáveis. Métodos: Todos os incluídos deveriam ter Campimetria Computadorizada Humphrey Sita Standard 24-2 confiáveis. A estabilidade campimétrica foi definida se apresentassem menos de cinco pontos com p<5% e/ou nenhum ponto com p<1% e/ou p<0,05% no gráfico de comparação do Glaucoma Progression Analysis. Para a tomografia de coerência óptica, foi utilizado a estratégia de avaliação para glaucoma. Resultados: Foram incluídos 75 olhos de 75 pacientes: 43 com glaucoma e 32 suspeitos. A média dos intervalos do campo visual entre o 1o e 3o exame, foi de 29,57 ± 9,65 meses. Não houve variação para os parâmetros do campo visual (desvio médio, desvio padrão e índice da função visual) entre o primeiro e o último exame (p>0,05 para todos). Não houve variação dos parâmetros da camada de fibras nervosas da retina ao longo do estudo, enquanto que para os parâmetros do disco óptico, apenas cup volume apresentou mudança (p=0,004). Em relação à camada de células ganglionares da retina, notou-se uma redução progressiva na espessura média da Ganglionar Complex Cells com uma variabilidade entre o primeiro e último exame de -0,98 ± 3,71% (p=0,04). Quanto ao Global loss volume, houve um aumento progressivo ao longo do estudo com uma variabilidade entre o primeiro e último exame de 14,71 ± 44,52% (p=0,04). O parâmetro inferior do Ganglionar Complex Cells também reduziu significativamente entre o 1o e 3o exames (p=0,02). Os demais parâmetros da tomografia de coerência óptica RTVue se mantiveram estáveis entre o 1o e 3o exames. Conclusão: Os presentes achados sugerem que pacientes glaucomatosos ou com suspeita de glaucoma e com campos visuais estáveis, podem apresentar progressão estrutural na camada de células ganglionares da retina avaliada por meio da tomografia de coerência óptica RTVue.

Cardiac Corpuscles: A "New" Morphofunctional Entity? / Corpúsculos Cardíacos: ¿Una "Nueva" Entidad Morfofuncional?

SUMMARY: The existence of "transitional muscular structures" between subendocardial branches (Purkinje fibers) and ventricular working muscle fibers (WF) was first described by the German anatomist, Kurt Goerttler, in 1964. He designated them as "subendocardial nucleus organs." He supposed such fibers functioned as mechanoreceptors, controlling of the intensity of contraction of the ventricular musculature. Brazilian anatomist Ferraz de Carvalho described similar structures in 1993. A thorough literature search failed to identify any other research articles confirming or denying their existence. The objective of this work was to find such structures in subendocardial ventricular walls in human hearts. We collected fifteen formalin-preserved hearts from the Anatomy Department of São Paulo University and sectioned the apical portions on the right and left ventricles according to method used by Goerttler. We utilized conventional histology (light microscopy- LM), scanning electron microscopy (SEM), and a new preservation method called micro- plastination (MP). At the anterior wall of the right ventricle in the subendocardial region between the interventricular septum and moderator band, we found several bundles of fusiform and helicoidal fibers of similar histology to the WF. The bundles measured between 400 and 1150 µm in length and were separated from adjacent muscular fibers by thin collagen fiber, thus acting as a "pseudo capsule." Some structures seemed to be linked to PF and were appeared to be lymphatic and blood vessels and nerves. We called those structures "cardiac corpuscles" (CC). The observation of the previously "unknown" CC in this initial study confirmed the previous descriptions and its discovery may contribute to new perspectives in the study of cardiac muscle structure and function.

La existencia de "estructuras musculares de transición" entre los ramos subendocárdicos (fibras de Purkinje) y las fibras musculares ventriculares activas(FMV) fue descrita por primera vez por el anatomista alemán Kurt Goerttler en 1964, quien las denominó "órganos del núcleo subendocárdico". Supuso que tales fibras funcionaban como mecanoreceptores, controlando la intensidad de la contracción de la musculatura ventricular. El anatomista brasileño Ferraz de Carvalho describió estructuras similares en 1993. Una búsqueda bibliográfica exhaustiva no logró identificar ningún otro artículo de investigación que confirmara o negara su existencia. El objetivo de este trabajo fue encontrar dichas estructuras en las paredes ventriculares subendocárdicas de corazones humanos. Recolectamos 15 corazones conservados en formalina del Departamento de Anatomía de la Universidad de São Paulo y seccionamos las porciones apicales de los ventrículos derecho e izquierdo según el método utilizado por Goerttler. Utilizamos histología convencional (microscopía de luz-LM), microscopía electrónica de barrido (SEM) y un nuevo método de conservación llamado microplastinación (MP). En la pared anterior del ventrículo derecho en la región subendocárdica entre el tabique interventricular y la banda moderadora, encontramos varios haces de fibras fusiformes y helicoidales de histología similar a la FMV. Los haces medían entre 400 y 1150 µm de longitud y estaban separados de las fibras musculares adyacentes por una fina fibra de colágeno, actuando así como una "pseudocápsula". Algunas estructuras parecían estar vinculadas a la fibras de purkinje y parecían ser vasos linfáticos, sanguíneos y nerviosos. Llamamos a esas estructuras "corpúsculos cardíacos" (CC). La observación del CC previamente "desconocido" en este estudio inicial confirmó las descripciones anteriores y su descubrimiento puede contribuir a nuevas perspectivas en el estudio de la estructura y función del músculo cardíaco.

Elastin remodeling: Does it play a role in priming the malignant phenotype of oral mucosa?

Background: The extracellular matrix (ECM) is a dynamic tissue that provides nutrition and support to overlying epithelium. During tumorigenesis, the tumor microenvironment (TME) dysregulates the ECM. This is reflected by morphological changes seen in collagen and elastic fibers and is thought to facilitate metastasis. Aim: To study the degradation of elastic fibers in different grades of oral squamous cell carcinoma (OSCC) and in oral epithelial dysplasia (OED) using histochemistry and to correlate it to the TNM stage of OSCC. Materials and Methods: Tumor cores from 38 cases of OSCC (well-differentiated[15], moderately differentiated[14], and poorly differentiated[9]) and 15 incisional biopsies of OED were analyzed. Hematoxylin-eosin and Verhoeff's–Van Gieson (VVG) stains were used. The stained sections were assessed for morphological changes in elastic fibers. Statistical Analysis: Data were analyzed using Statistical Package for Social Sciences (SPSS) version 22 software. Fisher's exact, Kruskal–Wallis, one-way ANOVA, and Turkey post hoc tests were used to establish significance (P ? 0.05). Spearman's correlation test was used to correlate elastin fiber degradation with TNM stage of OSCC. Results: All grades of OSCC showed absence of elastic fibers around the tumor islands. Elastic fiber degradation (fragmented and clumped type fibers) increased proportionately with the grade and TNM stage of OSCC. In OED, A significant reduction in the amount of elastic fibers with increasing grade was noted. Conclusion: A positive correlation was noted between elastin degradation and grade and stage of OSCC. Therefore, it may be implicated in tumor progression of OSCC.

Prevalencia de Neuropatía periférica de pequeñas fibras asociada a retinopatía en diabéticos tipo 2: Uso prueba biomédica por imagen termográfica

Introducción: La neuropatía periférica diabética de fibras delgadas (NPD-fd) son diagnosticadas por pruebas biomédicas vasomotoras cuyo fundamento es la alteración de la termorregulación de la piel. Objetivos: Calcular la prevalencia y los factores asociados a NPD-fd usando imagen termográfica (IT). Métodos: Se realizó un estudio observacional, transversal analítico en una unidad especializada en el ámbito de la atención primaria, en el que se avaluó pacientes con diabetes mellitus tipo 2 mediante pruebas neurológicas periféricas como la sensibilidad táctil y vibratoria para el diagnóstico de NPD de fibras gruesas (NPDfg) y la termorregulación pasiva por IT para la NPD-fd . Ésta última se realizó en la planta del pie utilizando una cámara termográfica en la consulta ambulatoria, evaluando 5 mediciones termográficas plantares por sujeto. Luego, la asociación entre diabéticos con y sin NPD-fd fue analizada respecto a género, edad, tiempo de enfermedad diabética, tipo de tratamiento diabético, hipertensión, retinopatía, nefropatía, dieta baja en carbohidratos, actividad física, síntoma dolor y IMC. Resultados: Se estudiaron 304 pacientes con diabetes mellitus tipo 2, una edad promedio de 65.07±11.39 años, en su mayoría de sexo masculino, encontrándose una NPD-fg en 14.8 %, NPD-fd en 27.3 % y ambas NPD en 34.9%. La asociación de la NPD-fd fue únicamente con el factor de la presencia de retinopatía (α=0,02, C= 0.18). Conclusiones: Se encontró una alta prevalencia de NPD-fd usando una imagen termográfica que estuvo asociado a la presencia de retinopatía.

Introduction: Small fibers diabetic peripheral neuropathy (DPN-sf) are diagnosed by biomedical vasomotor tests whose foundation is altered skin thermoregulation. Objectives: To estimate the prevalence and factors associated with DPN-sf using thermographic imaging (TI). Methods: An observational, cross-sectional, analytical study was performed in a specialized unit in the primary care setting, in which patients with type 2 diabetes mellitus were assessed by peripheral neurological tests such as tactile and vibratory sensitivity for the diagnosis of large fibers peripheral neuropathy (DPN-lf) and passive thermoregulation by TI for DPN-sf .The latter was performed on the sole using a thermographic camera in the outpatient clinic, evaluating 5 plantar thermographic measurements per subject. Then, the association between diabetics with and without DPN-sf was analyzed concerning gender, age, time of diabetic disease, type of diabetic treatment, hypertension, retinopathy, nephropathy, low carbohydrate diet, physical activity, pain symptom, and BMI. Results: 304 patients with type 2 diabetes mellitus were studied, mean age of 65.07±11.39 years, mostly male, finding DPN-lf in 14.8 %, DPN-sf in 27.3 %, and both NPD in 34.9%. The association of DPN-sf was only with the factor of the presence of retinopathy (α=0.02, C= 0.18). Conclusions: We found a high prevalence of DPN-sf using thermographic imaging that was associated with the presence of retinopathy.

TRPV4-induced Neurofilament Injury Contributes to Memory Impairment after High Intensity and Low Frequency Noise Exposures / 生物医学与环境科学（英文）

OBJECTIVE@#Exposure to high intensity, low frequency noise (HI-LFN) causes vibroacoustic disease (VAD), with memory deficit as a primary non-auditory symptomatic effect of VAD. However, the underlying mechanism of the memory deficit is unknown. This study aimed to characterize potential mechanisms involving morphological changes of neurons and nerve fibers in the hippocampus, after exposure to HI-LFN.@*METHODS@#Adult wild-type and transient receptor potential vanilloid subtype 4 knockout (TRPV4-/-) mice were used for construction of the HI-LFN injury model. The new object recognition task and the Morris water maze test were used to measure the memory of these animals. Hemoxylin and eosin and immunofluorescence staining were used to examine morphological changes of the hippocampus after exposure to HI-LFN.@*RESULTS@#The expression of TRPV4 was significantly upregulated in the hippocampus after HI-LFN exposure. Furthermore, memory deficits correlated with lower densities of neurons and neurofilament-positive nerve fibers in the cornu ammonis 1 (CA1) and dentate gyrus (DG) hippocampal areas in wild-type mice. However, TRPV4-/- mice showed better performance in memory tests and more integrated neurofilament-positive nerve fibers in the CA1 and DG areas after HI-LFN exposure.@*CONCLUSION@#TRPV4 up-regulation induced neurofilament positive nerve fiber injury in the hippocampus, which was a possible mechanism for memory impairment and cognitive decline resulting from HI-LFN exposure. Together, these results identified a promising therapeutic target for treating cognitive dysfunction in VAD patients.

Effects of passion fruit (Passiflora tenuifila Killip) intake on eutrophic and obese subjects: Lipidomic approach

Obesity and overweight result in metabolic changes that build up as risk factors for the development of the main non-communicable diseases. Among these alterations, dyslipidemia is an important risk factor for cardiovascular diseases (CDV) and is expressed in elevated plasma levels of triacylglycerols, cholesterol, and low-density-lipoprotein (LDL, VLDL) and decreased plasma levels of high-density lipoprotein (HDL). Passiflora tenuifila Killip is a native passion fruit species of the Brazilian Midwest region and is a good source of proanthocyanidins and dietary fibers. Proanthocyanidins are a class of phenolic compounds that are attributed with improving lipoprotein profile properties, translated as improved LDL/HDL ratio. Fibers are fermented by the gut microbiota and produce short-chain fatty acids (SCFA), also involved in the regulation of energetic metabolism.. A 30-consecutive-day-long intervention with lyophilized P. tenuifila flour was performed in eutrophic and obese subjects. Passion fruit ingestion increased fecal production of acetate, key SCFA in the modulation of lipid metabolism; reduced body fat percentage in all subjects; and reduced total cholesterol (TC) of subjects who presented basal CT > 130 mg/dL. After the intervention, plasma lipidomic analysis detected 44 statistically significant lipids, regardless of BMI. Considering the study population with altered TC, reduced levels of glycerophospholipids were observed, a lipid class studied for their involvement in CVD. The intake of P. tenuifila contributed to the improvement in cardiovascular risk markers and acts on lipid metabolism. These effects may be due to synergic action between the bioactive compounds in the fruit. Still, other studies are necessary to identify mechanisms related to the action of bioactives of P. tenuifila, which can be better directed by this lipidomic approach

A obesidade e o sobrepeso são preocupações resultam em alterações metabólicas que se acumulam como fatores de risco para o desenvolvimento a longo prazo das principais doenças crônicas não transmissíveis. Dentre essas alterações, a dislipidemia um importante fator de risco para doenças cardiovasculares (DCV), expressa em níveis plasmáticos elevados de triacilgliceróis, colesterol e das lipoproteínas de baixa densidade (VLDL, LDL), e níveis diminuídos da lipoproteína de alta densidade (HDL). Passiflora tenuifila Killip é uma espécie de maracujá nativa da região Centro-Oeste brasileira, e é uma boa fonte de proantocianidinas e fibras alimentares. As proantocianidinas são compostos fenólicos com reportados efeitos na melhora do perfil de lipoproteínas, traduzida como a relação LDL/HDL. As fibras são fermentadas pela microbiota intestinal e produzem ácidos graxos de cadeia curta (AGCC), metabólitos também envolvidos na regulação do metabolismo energético.. Assim, a lipidômica não-target é aplicada como ferramenta exploratória neste estudo: uma intervenção de 30 dias consecutivos de ingestão de P. tenuifila na forma de farinha liofilizada em indivíduos eutróficos e obesos. O consumo do maracujá promoveu aumento da produção fecal de acetato, AGCC importante na modulação do metabolismo lipídico; a redução do percentual de gordura corporal em todos os indivíduos; e redução do colesterol total (CT) para os indivíduos com CT > 130 mg/dL. A análise lipidômica do plasma detectou 44 lipídios estatisticamente relevantes, independentemente do IMC, após a intervenção. Considerando a população do estudo com CT alterado, foi observada uma redução de glicerofosfolipídios, classe de lipídios estudada pelo seu envolvimento em DCV. Assim, a ingestão de P. tenuifila contribui para a melhora nos marcadores de risco cardiovascular e atua no metabolismo lipídico. Estes efeitos podem ser decorrentes de sinergia entre os diversos compostos bioativos do fruto. Ainda, outros estudos são necessários para identificar mecanismos relacionados a ação dos bioativos da P. tenuifila e estes podem ser mais bem direcionados pela lipidômica

Optic nerve head vascular variations in pseudoexfoliative and primary open-angle glaucoma / Variações vasculares da cabeça do nervo óptico no glaucoma pseudoesfoliativo e primário de ângulo aberto

Abstract Purpose: The purpose of this study was to assess the optic nerve head microvascular changes in pseudoexfoliative and primary open-angle glaucoma and define the relationship between vessel density and retinal nerve fiber layer thickness. Methods: This observational cross-sectional study assessed 72 eyes with primary open-angle glaucoma, 41 eyes with pseudoexfoliative glaucoma, and 60 healthy eyes. On the basis of optic nerve head-centered, 4.5 mm × 4.5 mm scan size images, we evaluated the vessel density, as well as the peripapillary sector, inside disk, and all sectoral quadrants. Results: Both glaucoma Groups had lower vessel density in all regions compared with the healthy Group (p<0.05 for all variables). Vessel densities of the nasal inferior, inferior nasal, and inferior temporal sectors in both glaucoma Groups showed similar results (p=0.157, p=0.128, p=0.143, respectively). Eyes with pseudoexfoliative glaucoma had significantly lower vessel densities than eyes with primary open-angle glaucoma in all other regions (p<0.05 for all variables). For both glaucoma Groups, the average retinal nerve fiber layer thickness positively correlated with vessel density in all peripapillary sectors (p<0.05 for all variables). Conclusions: Reduction in vessel density correlated with the thinning of retinal nerve fiber layer in both glaucoma Groups. Decreased vessel density in the optic nerve head can be used to demonstrate the microvascular pathologies and possible ischemic changes that lead to faster progression and worse prognosis in pseudoexfoliative glaucoma.

Resumo Objetivo: Atribuir variações microvasculares à cabeça do nervo óptico no glaucoma pseudoesfoliativo e primário de ângulo aberto, e definir a relação entre a densidade dos vasos e a espessura da camada de fibras nervosas da retina. Métodos: Este estudo foi projetado como observacional e transversal. Foram incluídos 72 olhos com glaucoma primário de ângulo aberto, 41 olhos com glaucoma pseudoesfoliativo e 60 olhos saudáveis. Foram obtidas imagens do nervo óptico centralizadas na cabeça do nervo com 4,5 × 4,5 mm de tamanho de varredura. A densidade vascular foi avaliada em toda a imagem, na área peripapilar, dentro do disco óptico e em todos os quadrantes setoriais. Resultados: Em todas as regiões, a densidade vascular foi menor em ambos os grupos com glaucoma que nos olhos saudáveis (p<0,05 para todas as variáveis). Em ambos os grupos com glaucoma, a densidade vascular mostrou resultados semelhantes nos setores nasal inferior, inferior nasal e temporal inferior (respectivamente, p=0,157, p=0,128 e p=0,143). Os olhos com glaucoma pseudoesfoliativo mostraram densidade vascular acentuadamente menor que nos olhos com glaucoma primário de ângulo aberto em todas as outras regiões (p<0,05). A espessura média da camada de fibras nervosas da retina demonstrou uma correlação positiva com a densidade vascular em todos os setores peripapilares em ambos os grupos com glaucoma (p<0,05 para todas as variáveis). Conclusões: A redução da densidade vascular foi correlacionada a uma redução da espessura da camada de fibras nervosas da retina em ambos os grupos com glaucoma. A densidade vascular reduzida na cabeça do nervo óptico poderia ser usada para provar patologias microvasculares e possíveis alterações isquêmicas responsáveis por uma evolução mais rápida e um prognóstico pior no glaucoma pseudoesfoliativo.

Avaliação de constipação intestinal em estudantes de nível superior em uma universidade do extremo sul catarinense / Evaluation of intestinal constipation in higher level students at a university in the extreme south of catarina / Evaluación del estreñimiento intestinal en estudiantes de nivel superior de una universidad del extremo sur de catarina

Objetivo: Avaliar a presença de CI em estudantes das fases iniciais e finais dos cursos de Medicina, Nutrição e Engenharia Civil de uma Universidade no Extremo Sul Catarinense -Criciúma, através da ingestão alimentar e hídrica, dos tipos de fezes, se fazem uso, ou não, de alternativas de evacuação, comparando os hábitos alimentares com influência na constipação nos estudantes das três diferentes áreas. Método:Tal estudo foi realizado através de um questionário adaptado com questões sobre os hábitos de vida do indivíduo, juntamente com os critérios de Roma III, Roma IV e Escala de Bristol. Resultados:Caracterizou-se por 158 estudantes, sendo 71,5% (n=113) representam o sexo feminino e apenas 28,5% (n=45), o sexo masculino. A ingestão de líquidos demonstrou-se ser baixa, sendo 33,5% (n=53) ingerem mais que 1600ml/dia. Através da Escala de Bristol, 15,8% (n=25) revelaram evacuar o Tipo 1 e 2, caracterizando CI. Sobre os laxantes, apenas 3,2% (n=5) confirmaram a utilização. Foi verificada CI em 18,6% (n=21) das mulheres e 8,9% (n=4) dos homens. Conclusão:a alimentação destacou ser pobre em fibras. É notório que os estudantes sofrem com sintomas de CI. Através do auxílio de um profissional de nutrição, é necessário que equilibrem sua alimentação com fibras, consumem mais água diariamente e, consequentemente, auxiliem no bom funcionamento intestinal e na melhora da qualidade de vida.

Objective: To evaluate the presence of IC in students in the initial and final stages of Medicine, Nutrition and Civil Engineering courses at a University in the extreme south of Santa Catarina -Criciúma, through food and water intake, types of feces, whether they use, or no, of evacuation alternatives, comparing eating habits with influence on constipation in students from three different areas. Method: This study was carried out through a questionnaire answered with questions about the individual's life habits, together with the criteria of Rome III, Rome IV and Bristol Scale. Results: Characterized by 158 students, 71.5% (n=113) female and only 28.5% (n=45) male. Liquid intake was low, with 33.5% (n=53) ingesting more than 1600ml/day. Through the Bristol Scale, 15.8% (n=25) revealed to evacuate Type 1 and 2, characterizing CI. Regarding laxatives, only 3.2% (n=5) confirmed their use. CI was found in 18.6% (n=21) of women and 8.9% (n=4) of men. Conclusion:the highlighted diet is low in fiber. It is notorious that students suffer from HF symptoms. Through the help of a nutrition professional, it is necessary that they balance their diet with fiber, consume more water daily and, consequently, help in the good intestinal functioning and in the improvement of the qualityof life.

Objetivo:Evaluar la presencia de CI en estudiantes de las etapas inicial y final de las carreras de Medicina, Nutrición e Ingeniería Civil de una Universidad del extremo sur de Santa Catarina -Criciúma, a través de la ingesta de alimentos y agua, tipos de heces, si utilizan , o no, de alternativas de evacuación, comparando los hábitos alimentarios con influencia sobre el estreñimiento en estudiantes de las tres diferentes áreas. Método:Este estudio se realizó mediante un cuestionario adaptado con preguntas sobre el estilo de vida del individuo, junto con los criterios de Roma III, Roma IV y la Escala de Bristol. Resultados:Se caracterizó por 158 estudiantes, 71,5% (n=113) mujeres y sólo 28,5% (n=45) hombres. La ingesta de líquidos resultó ser baja, con un 33,5% (n=53) ingiriendo más de 1.600 ml/día. A través de la Escala de Bristol, el 15,8% (n=25) reveló evacuar Tipo 1 y 2, caracterizando CI. Respecto a los laxantes, sólo el 3,2% (n=5)confirmó su uso. La CI se verificó en el 18,6% (n=21) de las mujeres y en el 8,9% (n=4) de los hombres. Conclusión:la dieta era baja en fibra. Es notorio que los estudiantes padecen síntomas de CI. Con la ayuda de un profesional de la nutrición, es necesario que equilibren su dieta con fibra, consuman más agua diariamente y, en consecuencia, ayuden en el buen funcionamiento intestinal y en la mejora de la calidad de vida.

Arterial hemodynamics and its correlation with retinal microarchitecture in pseudoexfoliation glaucoma / Hemodinâmica arterial e sua correlação com a microarquitetura retiniana no glaucoma pseudoesfoliativo

ABSTRACT Purpose: The study aimed to investigate the correlation between arterial hemodynamics measured by color Doppler ultrasonography and retinal microarchitecture parameters determined by spectral-domain optical coherence tomography (SD-OCT) in pseudoexfoliation glaucoma. Methods: This prospective study included 82 participants. Peripapillary retinal nerve fiber layer, ganglion cell inner plexiform layer, and ganglion cell complex values were measured. Ophthalmic artery and central retinal artery flows were evaluated with color Doppler ultrasonography, and resistivity index values were calculated. Results: The study included 47 controls and 35 pseudoexfoliation glaucoma cases. In pseudoexfoliation glaucoma group, mean peripapillary retinal nerve fiber layer and ganglion cell complex thickness were statistically significantly lower in all quadrants compared to controls (p<0.001). Resistivity index values of the ophthalmic and central retinal arteries were significantly higher in pseudoexfoliation glaucoma group than in the controls (p<0.001 and r=0.684). Resistivity index values of the ophthalmic and central retinal arteries with ganglion cell complex thickness correlated significantly. On the other hand, no significant relationship for retinal nerve fiber layer thickness was identified. Conclusions: Structural changes (ganglion cell complex and ganglion cell inner plexiform layer) in patients with pseudoexfoliation glaucoma and early glaucomatous loss showed a significant correlation with changes in ocular vascular hemodynamics. In cases where systemic vascular resistance is increased, ganglion cell complex and ganglion cell inner plexiform layer may not exactly reflect glaucoma state. In such cases, thickness changes in the retinal nerve fiber layer may give more realistic results regarding glaucoma. We have seen that pseudoexfoliation glaucoma-induced structural deterioration and increased resistance in ocular hemodynamics correlated with ganglion cell complex, but not retinal nerve fiber layer.

RESUMO Objetivo: Investigar a correlação entre a hemodi­nâmica arterial, medida pela ultrassonografia com Doppler colorido, e os parâmetros de microarquitetura da retina, determinados pela tomografia de coerência óptica de domínio espectral (SD-OCT) no glaucoma pseudoexfoliativo. Métodos: Foram incluídos 82 participantes neste estudo prospectivo. Foram medidos os valores da camada de fibras nervosas da retina peripapilar, da camada plexiforme interna de células ganglionares e do complexo de células ganglionares. Os fluxos da artéria oftálmica e da artéria central da retina foram avaliados com ultrassonografia por Doppler colorida e foram calculados os valores do índice de resistividade. Resultados: Foram incluídos no estudo 47 casos de controle e 35 casos de glaucoma pseudoexfoliativo. No grupo com glaucoma pseudoexfoliativo, a média da camada de fibras nervosas da retina peripapilar e a espessura do complexo de células ganglionares foram menores em todos os quadrantes em comparação com os controles, com significância estatística (p<0,001). Os valores do índice de resistividade das artérias oftálmica e central da retina foram significativamente maiores no grupo com glaucoma pseudoexfoliativo que nos controles (p<0,001 e r=0,684). Ao se compararem os valores do índice de resistividade das artérias oftálmica e central da retina com a espessura do complexo de células ganglionares, foi encontrada uma correlação significativa entre elas. Por outro lado, não detectamos uma relação significativa para a espessura da camada de fibras nervosas da retina. Conclusões: Alterações estruturais (complexo de células ganglionares, camada plexiforme interna de células ganglionares) em pacientes com glaucoma pseudoexfoliativo com perda glaucomatosa precoce mostraram uma correlação significativa com alterações na hemodinâmica vascular ocular. Nos casos em que a resistência vascular sistêmica é aumentada, o complexo de células ganglionares e a camada plexiforme interna de células ganglionares podem não refletir exatamente o estado do glaucoma. Nesses casos, alterações na espessura da camada de fibras nervosas da retina podem dar resultados mais realistas em relação ao glaucoma. Observou-se uma correlação da deterioração estrutural induzida pelo glaucoma pseudoexfoliativo e do aumento da resistência na hemodinâmica ocular com o complexo de células ganglionares, mas não com a camada de fibras nervosas da retina.

Evaluation of the expression of nerve fiber markers in healthy and inflamed dental pulp

Abstract The diagnosis of irreversible pulpitis (IP) depends on clinical data, especially the chief complaint of the patient, visual inspection, response to the application of stimuli, and radiographic examination. The characterization of nerve fibers (NF) in IP may contribute to better interpret painful symptoms, but has been barely explored. This study sought to characterize the density and integrity of NF in 16 samples of IP and in five healthy pulps (HP) using S-100 and PGP 9.5 markers. Immunohistochemistry was performed to determine the density/mm2 of S-100+ and PGP 9.5+ in NF. The amount of degenerated NF was obtained by subtracting the total NF density from the amount of intact NF. Associations between NF density and integrity and symptomatology were calculated. All samples were positive for S-100 and PGP 9.5. Compared to HP samples (38.20/mm2), IP samples had a lower density of intact NF (6.24/mm2). A significantly higher density of degenerated NF was found in IP samples with spontaneous pain (39.59/mm2) compared to those with provoked pain (23.96/mm2) (p = 0.02). No association was observed between intensity of the inflammatory infiltrate and NF density and integrity (p > 0.05). The findings of this study suggest that pulpitis may involve different stages of degeneration and may be more advanced in cases with spontaneous pain. The symptoms reported by affected individuals do not appear to depend on the intensity of the inflammatory infiltrate, but rather on the integrity of NF.

The effects of transcranial direct current stimulation on cognition and white matter fiber integrity in stroke patients / 中华物理医学与康复杂志

Objective:To observe any effect of transcranial direct current stimulation (tDCS) on the cognition of stroke survivors and the integrity of their white matter fibers.Methods:Thirty persons with post-stroke cognitive impairment (PSCI) were randomly divided into an experimental group ( n=15) and a control group ( n=15). In addition to basic drug therapy and routine cognition training, the experimental group received 20 minutes of tDCS daily, 5 days per week for 3 weeks, while the control group received sham tDCS stimulation. Before and after the treatment, both groups′ cognitive functioning was evaluated using the mini-mental state examination (MMSE) and the Montreal cognitive assessment scale (MoCA). Their ability in the activities of daily living (ADL) was quantified using the modified Barthel index (MBI). Diffusion tensor imaging (DTI) was employed to observe any changes in the integrity of their white matter fibers. Results:The average MMSE, MOCA and MBI scores of both groups had improved significantly after the treatment, but the improvement in the experimental group was significantly greater than among the controls. The average fractional anisotroposy value of the affected inferior fronto-occipital fasciculus in both groups was positively correlated with the group′s average MMSE score and MoCA score.Conclusion:tDCS can effectively improve the cognition and functioning in the activities of daily living of stroke survivors. Its mechanism may be related to improving the integrity of the white matter fibers involved.

New Therapeutic Perspective Based on Anacardium humile in the Treatment of Skin Wound Infected by Staphylococcus aureus

This is a literature review with the objective of presenting scientific evidence about the therapeutic importance of the use of Anacardium humile for the treatment of infected skin wounds. Retrospective and analytical study carried out from 1999 to 2021, in the Bireme, UpToDate, Pubmed and Scielo databases. The association of the descriptors “Phytotherapy” was used; “Cerrado and Pantanal Plants”; “Wounds contaminated by bacteria”; “elastic fibers”. Of the 248 articles analyzed, 36 were included in the review because they met the inclusion criteria. Among the results, it was evidenced that the conventional treatments, although effective (the gold standard being Sulfadiazine 1% silver), present toxicity to human keratinocytes and fibroblasts, with this, it is concluded that further research will be necessary to prove the effectiveness of new treatment options or association of herbal medicines with treatment.

Electron microscopy in the diagnosis of skeletal muscle disorders: Its utility and limitations

Electron microscopy (EM) has a substantial role in the diagnosis of skeletal muscle disorders. The ultrastructural changes can be observed in muscle fibers and other components of the muscle tissue. EM serves as a confirmatory tool where the diagnosis is already established by enzyme histochemistry staining. Although it is indispensable in the diagnosis of rare forms of congenital myopathies not appreciated by light microscope, such as cylindrical spiral myopathy, zebra body myopathy, fingerprint body myopathy, and intranuclear rod myopathy, in cases not subjected to histochemical staining, it is required for definitive diagnosis in certain groups of muscle disorders, which includes congenital myopathies, metabolic myopathies in particular mitochondrial myopathies and glycogenosis, and in vacuolar myopathies. It does not have diagnostic implications in muscular dystrophies and neurogenic disorders. In the recent past, despite the availability of advanced diagnostic techniques, electron microscopy continues to play a vital role in the diagnosis of skeletal muscle disorders. This review gives an account of ultrastructural features of skeletal muscle disorders, the role of EM in the diagnosis, and its limitations.

Assessment of retinal nerve fiber thickness and optic nerve head blood flow in female patients diagnosed with fibromyalgia syndrome / Avaliação da espessura da camada de fibras nervosas da retina e fluxo sanguíneo da cabeça do nervo óptico em pacientes do sexo feminino com diagnóstico de síndrome de fibromialgia

ABSTRACT Purpose: Numerous neuroimaging and ophthalmic studies suggest optic nerve involvement in fi­bromyalgia syndrome. To further elucidate the etiopathogenesis of fibromyalgia syndrome, we compared optic nerve head blood flow area and retinal nerve fiber layer thickness between patients and controls and investigated the associations of these measures with fibromyalgia syndrome severity. Methods: Participants were divided into the following three groups according to Fibromyalgia Impact Questionnaire score: mild-moderate fibromyalgia syndrome (Group 1, n=47), severe fibromyalgia syndrome (Group 2, n=38), and healthy controls (Group 3, n=38). The optic nerve head blood flow area and retinal nerve fiber layer thickness were measured by optical coherence tomography angiography and compared among groups by ANOVA. Associations with fibromyalgia syndrome severity were evaluated by Spearman's correlation analysis. Results: Optic nerve head blood flow area did not differ between fibromyalgia syndrome Groups 1 and 2 (1.61 ± 0.08 vs.1.63 ± 0.09 mm2), but it was significantly lower in control Group 3 (1.49 ± 0.10 mm2, all p=0.001). Average retinal nerve fiber layer thickness values were significantly lower in Group 2 (101.18 ± 6.03 mm) than in Group 1 (103.21 ± 10.66 mm) and Group 3 (106.51 ± 8.88 mm) (p=0.041 and 0.020, respectively). The inferotemporal (134.36 ± 12.19 mm) and inferonasal (109.47 ± 16.03 mm) quadrant retinal nerve fiber layer thickness values were significantly lower in Group 2 than in Group 1 [inferotemporal (142.15 ± 17.79 mm), inferonasal (117.94 ± 20.53 mm)] and Group 3 [inferotemporal (144.70 ± 16.25 mm), inferonasal (118.63 ± 19.01 mm)] [inferotemporal, p=0.017 and 0.010, respectively; inferonasal, p=0.047 and 0.045, respectively]. The nasal-superior quadrant retinal nerve fiber layer thickness value was higher in Group 3 (91.08 ± 12.11 mm) than in Group 1 (84.34 ± 13.09 mm) and Group 2 (85.26 ± 13.11 mm) (p=0.031 and 0.038, respectively). A weak correlation was detected between disease severity and optic nerve head blood flow area. Conclusion: Neural and vascular structures of the eye are altered in fibromyalgia syndrome, particularly among severe cases. Therefore, optical coherence tomography angiography may provide valuable information for the diagnosis and elucidation of fibromyalgia syndrome pathophysiology.

RESUMO Objetivo: Numerosos estudos de neuroimagem e oftalmologia sugerem o acometimento do nervo óptico na síndrome de fibromialgia. Para esclarecer a etiopatogenia da síndrome de fibromialgia, comparamos a área de fluxo sanguíneo da cabeça do nervo óptico e a espessura da camada de fibras nervosas da retina entre pacientes e o grupo controle, e examinamos as associações dessas medidas com a severidade da síndrome de fibromialgia. Métodos: Os participantes foram divididos em três grupos de acordo com a pontuação no Questionário de Impacto da Fibromialgia: síndrome de fibromialgia leve a moderada (Grupo 1, n=47), síndrome de fibromialgia grave (Grupo 2, n=38) e controles saudáveis (Grupo 3, n=38). A área de fluxo sanguíneo da cabeça do nervo óptico e a espessura da camada de fibras nervosas da retina foram medidas por angiotomografia de coerência óptica e comparadas entre os grupos por ANOVA. As associações com a severidade da síndrome de fibromialgia foram avaliadas pela análise de correlação de Spearman. Resultados: A área de fluxo sanguíneo da cabeça do nervo óptico não diferiu entre os Grupos 1 e 2 da síndrome de fibromialgia (1,61 ± 0,08 contra 1,63 ± 0,09 mm2), mas foi significativamente menor no Grupo 3, de controle (1,49 ± 0,10 mm2, todos com p=0,001). Os valores médios da espessura da camada de fibras nervosas da retina foram significativamente menores no Grupo 2 (101,18 ± 6,03 mm) em comparação com o Grupo 1 (103,21 ± 10,66 mm) e o Grupo 3 (106,51 ± 8,88 mm) (p=0,041, p=0,020). Os valores da espessura da camada de fibras nervosas no quadrante inferotemporal (134,36 ± 12,19 mm) e inferonasal (109,47 ± 16,03 mm) foram significativamente menores no Grupo 2 em comparação com o Grupo 1 (inferotemporal 142,15 ± 17,79 mm, inferonasal 117,94 ± 20,53 mm) e o Grupo 3 (inferotemporal 144,70 ± 16,25 mm, inferonasal 118,63 ± 19,01 mm) Para o quadrante inferotemporal, foram obtidos p=0,017 e p=0,010 para o Grupo 2 em comparação respectivamente com os Grupos 1 e 3, e para o quadrante inferonasal, p=0,047 e p=0,045, respectivamente para os mesmos grupos. A espessura da camada de fibra nervosa da retina no quadrante nasal superior foi maior no Grupo 3 (91,08 ± 12,11 mm) que no Grupo 1 (84,34 ± 13,09 mm) e no Grupo 2 (85,26 ± 13,11 mm); p=0,031 e p=0,038. Houve uma correlação fraca entre a severidade da doença e a área de fluxo sanguíneo na cabeça do nervo óptico. Conclusão: As estruturas neurais e vasculares do olho estão alteradas na síndrome da fibromialgia, principalmente nos casos graves. Assim, a angiografia por tomografia de coerência óptica pode fornecer informações valiosas para o diagnóstico e elucidação da fisiopatologia da síndrome de fibromialgia.

The interplay between oat beta glucan, gut microbiota and gut-liver axis in treatment of obesity associated non-alcoholic steatohepatitis and Type II diabetes mellitus

Dietary fibers regulate host health through various mechanisms related to their physicochemical structure and physiological properties in the gut. The interplay between diet, gut microbiota and human host appear to play a significant role in pathogenesis of obesity associated complications. This study was designed to unravel oat beta glucan modulatory effect on non-alcoholic steatohepatitis and type II diabetes mellitus in high fat fed rats and to explain possible pathomechanics involving gut microbiota and gut liver axis. Sixty male albino rats were included and randomly divided into four equal groups: control group; positive control group; diet induced obesity group; oat beta glucan treated group. All were subjected to assessment of glycemic profile; liver enzymes; serum trimethylamine-N-oxide levels; hepatic G-protein coupled receptor 43 relative gene expression. Histopathological examination of hepatic tissue was performed. Results revealed that oat beta glucan administration improved the biochemical changes. The histopathological findings confirmed the biochemical changes. Gut microbiota appeared to be highly implicated via its metabolites short chain fatty acids and trimethylamine. Our conclusion was that oat beta glucan was a successful compliance in the management strategy of hepatic steatosis and diabetes mellitus via modulating a number of gut microbial products.

Use of aerobic treadmill exercises on nerve regeneration after sciatic nerve injury in spontaneously hypertensive rats

Purpose: Various postoperative protocols have been proposed to improve outcomes and accelerate nerve regeneration. Recently, the use of physical exercise in a post-surgical neurorraphy procedure has shown good results when started early. We experimentally investigated the hypothesis that post-operative exercise speeds up results and improves clinical and morphologic parameters. Methods: Isogenic rats were randomly divided into four groups: 1 SHAM; 2 SHAM submitted to the exercise protocol (EP); 3 Grafting of the sciatic nerve; and 4 Grafting of the sciatic nerve associated with the EP. The EP was based on aerobic activities with a treadmill, with a progressive increase in time and intensity during 6 weeks. The results were evaluated by the sciatic functional index (SFI), morphometric and morphologic analysis of nerve distal to the lesion, and the number of spinal cord motor neurons, positive to the marker Fluoro-Gold (FG), captured retrogradely through neurorraphy. Results: Functional analysis (SFI) did not show a statistical difference between the group grafted with (­50.94) and without exercise (-65.79) after 90 days. The motoneurons count (Spinal cord histology) also showed no diference between these groups (834.5 × 833 respectively). Although functionally there is no difference between these groups, morphometric study showed a greater density (53.62) and larger fibers (7.762) in GRAFT group. When comparing both operated groups with both SHAM groups, all values were much lower. Conclusions: The experimental model that this aerobic treadmill exercises protocol did not modify nerve regeneration after sciatic nerve injury and repair with nerve graft.

Corneal confocal microscopy and its application in ischemic cerebrovascular disease / 国际脑血管病杂志

Corneal confocal microscopy (CCM) is an in vivo corneal imaging technique, which can directly quantify corneal nerve fibers in real time. It has the characteristics of non-invasive, objective and high sensitivity. CCM can not only be used for the diagnosis and treatment evaluation of corneal diseases, but also plays an important role in the diagnosis and prognosis evaluation of some peripheral and central nervous system diseases, such as diabetes peripheral neuropathy and Parkinson's disease. In addition, the changes of corneal nerve fibers can indirectly reflect the severity of ischemic cerebrovascular disease, and it is expected to become a noninvasive bioimaging marker of ischemic cerebrovascular disease. This article reviews CCM and its application in ischemic cerebrovascular disease, in order to provide better means for early diagnosis and prognosis evaluation of ischemic cerebrovascular disease.

Effect of aerobic and anaerobic training on different ergometers in rat muscle and heart tissues / Efeito dos treinamentos aeróbio e anaeróbio em diferentes ergômetros nos tecidos muscular e cardíaco de ratos

ABSTRACT Objective Analyze the effects of aerobic and anaerobic training on different ergometers on muscle and cardiac hypertrophy in rats. Methods The animals were separated into the following groups: Control (C), Aerobic Training in Water (ATW), Resistance Training in Water (RTW), Aerobic Training on Treadmill (ATT), and Resistance Training in Climbing (RTC). All training protocols were carried out for 4 weeks, 3 times/week. The cross-sectional area (CSA) of the gastrocnemius muscle cells and the areas of the cardiomyocytes were measured. Results In the fast-twitch fibers, there was an increase in CSA in the RTW and RTC groups compared to the ATW (p<0.01 and p<0.01) and ATT groups (p<0.01 and p<0.01). In the slow-twitch fibers, the ATW and ATT groups demonstrated a lower CSA compared to the RTW (p=0.03 and p<0.00) and RTC groups (p<0.01 and p<0.01). In the cardiomyocytes, there was an increase in the area of the RTW and RTC groups compared to groups C (p<0.01; p<0.01), ATW (p=0.02; p<0.01), and ATT (p<0.01; p<0.01). Conclusion The anaerobic training effectively promotes hypertrophy in the fast-twitch fibers and the cardiomyocytes. Level of Evidence V; Animal experimental study.

RESUMO Objetivo Analisar os efeitos dos treinamentos aeróbios e anaeróbios em diferentes ergômetros na hipertrofia muscular e cardíaca de ratos. Métodos Os animais foram separados nos grupos controle (C), treinamento aeróbio em natação (ATW), treinamento resistido em meio aquático (RTW), treinamento aeróbio em esteira rolante (ATT) e treinamento resistido em escalada (RTC). Os protocolos de treinamento foram realizados por 4 semanas, 3 x/semana. Foram mensurados a área de secção transversa (CSA) das células do músculo gastrocnêmio e as áreas dos cardiomiócitos. Resultados Nas fibras de contração rápida houve aumento da CSA dos grupos RTW e RTC em relação aos grupos ATW (p<0,01 e p<0,01) e ATT (p<0,01 e p<0,01). Nas fibras de contração lenta os grupos ATW e ATT demonstraram menor CSA comparado aos grupos RTW (p=0,03 e p<0,00) e RTC (p<0,01 e p<0,01). Nos cardiomiócitos houve aumento da área dos grupos RTW e RTC em comparação com os grupos C (p<0,01 e p<0,01), ATW (p=0,02 e p<0,01) e ATT (p<0,01 e p<0,01). Conclusão Os treinamentos anaeróbios promoveram hipertrofia nas fibras de contração rápida e nos cardiomiócitos. Nível de Evidência V; Estudo experimental em animais.

Anatomical connections between the inferior fibers of the musculus orbicularis oculi and musculus levator labii superioris alaeque nasi / Conexiones anatómicas entre las fibras inferiores del músculo orbicular del ojo y levantador nasolabial

SUMMARY: This study aimed to determine the anatomical connections between the inferior fibers of M. orbicularis oculi (OOc inf.) and the M. levator labii superioris alaeque nasi (LLSAN), providing anatomical variations of the connecting fibers. This study examined the OOc and LLSAN of 44 specimens from 22 embalmed adult Korean cadavers. Connecting fibers between the OOc inf. and LLSAN were observed in 29.5 % of the specimens. Connecting patterns of the OOc inf. to the LLSAN were classified into three categories according to the directions of the connecting fibers; Type I (13.6 %), in which some of the OOc inf. coursed medially to blend with the lateral originating fibers of the LLSAN. Type II (11.4 %), in which some of the OOc inf. descended vertically to blend with the LLSAN. Type III (4.5 %), in which both types I and II were found simultaneously. Some of the OOc inf. coursed medially to blend with the lateral originating fibers of the LLSAN, and some of the OOc inf. descended vertically to blend with the LLSAN. These findings provide greater knowledge of the connecting fibers between the OOc inf. and LLSAN, thereby helping us understand complicated expressions, inject BoNT-A into related wrinkles, and analyze EMG activities.

RESUMEN: Este estudio tuvo como objetivo determinar las conexiones anatómicas entre las fibras inferiores del músculo orbicular del ojo (MOO inf.) y el levantador nasolabial (Musculus levator nasiolabialis; M. levator labii superioris alaeque nasi) (LNL), proporcionando variaciones anatómicas de las fibras conectoras. Se examinó el orbicularis oculi (MOO) y LNL de 44 especímenes de 22 cadáveres coreanos adultos embalsamados. Se observaron fibras conectoras entre los MOO inf. y LNL en el 29,5 % de los especímenes. Patrones de conexión del OOc inf. a LNL se clasificaron en tres categorías según las direcciones de las fibras conectoras; Tipo I (13,6 %), en el que algunos de los MOO inf. cursaban medialmente para mezclarse con las fibras de origen lateral del LNL. Tipo II (11,4 %), en el que algunos de los MOO inf. descendían verticalmente para mezclarse con el LNL. Tipo III (4,5 %), en el que se encontraron simultáneamente los tipos I y II. Algunos de los MOO inf. cursaron medialmente para mezclarse con las fibras de origen lateral de la LNL y algunas de las MOO inf. descendían verticalmente para mezclarse con el LNL. Estos hallazgos aportan un mayor conocimiento de las fibras conectoras entre los MOO inf. y LNL, lo que nos ayuda a comprender expresiones complicadas, inyectar BoNT-A en las arrugas relacionadas y analizar las actividades de EMG.