995 resultados para expressão motora


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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Human salivary gland tumors originated from intercalated ducts present a broad range of histologic and cytologic patterns, mainly due to the presence of myoepithelial cells. The aim of this study is to verify the differentiation grade of neoplastic cells and a possible relation between myoepithelial cell differentiation and the presence of luminal secretory contents. The expression of vimentin and cytokeratin (CK) intermediate filaments, actin myofilament and epithelial membrane antigen (EMA) was investigated by double labeling immunocytochemical technique, in thirty salivary gland neoplasms: 5 pleomorphic adenomas, 5 myoepitheliomas, 3 basal cell adenomas, 7 adenoid cystic carcinomas (ACC) and 10 polimorphous low grade adenocarcinomas (PLGA). Tumors with intercalated duct differentiation (pleomorphic adenomas, basal cell adenomas and ACC) express CKs 7, 8, 18 and 19 in the luminal cells and coexpress eventually CK14 with these CKs. Some luminal cells stained with anti-EMA antibody, mainly where a secretory content in the lumen was observed. Outer ductal cells and other myoepithelial-like cells express vimentin, sometimes coexpressing actin and/or CK14 with vimentin. Plasmacytoid cells in myoepitheliomas and pleomorphic adenomas express vimentin and rarely CKs 7, 8, 18 and 19, sometimes coexpressing these CKs with CK14 but they are negative for the remaining antigens. Tumors without intercalated duct differentiation (solid basal cell adenoma and PLGA) express vimentin and CKs 7, 8, 14 and 18, sometimes coexpressing CKs 8 and 18 with CK14. In conclusion, in tumors with intercalated duct differentiation, myoepithelial cells express vimentin and sometimes coexpress actin and/or CK14 with vimentin, never coexpressing other CKs with vimentin. CK14 and actin are independently expressed by myoepithelial cells, so their expression is probably induced by different stimulus. However, the secretory function of luminal cells, visualized by EMA staining, ....

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The oral cancer model in hamsters shows many simílarities with developmental oral cancer in humans. The proliferating capacity is one the most characteristics of neoplásica ce/Is and detection of these ce/Is allow us, throughout of its counting, to achieve an estimated tumour growing index, with a consequent repercussion about prognostic and in the treatment of those lesions. 40 golden Syrian hamsters, both genders, aged between two to six mouth and weight 150g in average were used. The left síde of tangue of each animal was painted for eight consecutive weeks, with a solution of DMBA. Tongues were removed, fixed in 10% buffered fonnal solution. The histological slides were stained by AgNOR technique and by PCNA and β-catenin immunohistochemical antibodies. Statistical analyzes were performed by ANOVA one-way test and Tukey test. We may conclude that an association between AgNOR and PCNA might indicate the higher proliferating activity of the analyzed celIs. The experimental carcinogenesis model in hamster tongue is an available methodology for immunohistochemistry study. And finally, PCNA and β-catenin immunohistochemical antibodies may be used to analyze possible premalignant areas in oral leukoplakia

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The present study compared the expression of cytokeratins CK6, CK16 and CK19 and pan-cytokeratin (PAN) in oral mucosa cells between smokers and nonsmokers in order to determine the stage of cell differentiation and to consequently infer proliferative activity and expressions indicative of a potential for malignant differentiation. Thirty smokers and 30 non-smokers seen at the clinics of FOSJC-UNESP were screened. Smears were obtained from the left lateral border of the tongue with a cytobrush and slides were processed for immunohistochemistry using the antibodies reported Conventional microscopy was used for qualitative analysis. The results were analyzed statistically by the Z test, Fisher's exact test and comparison of two proportions (plus-4 confidence interval method). The expression of CK6 (p=0.002), CK16 (p=0.003), CK19 (p=0.0001) and PAN (p=0.008) was higher in oral mucosa smears from smokers compared to non- smokers. ln conclusion, increased epithelial proliferation is observed in the oral mucosa of smokers as demonstrated by the increased expression of CK6 and CKJ6, and these cells present alterations in epithelial maturation

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Aims: the aims of this study were to compare and to characterize the fine, sensory and perceptive function performance and handwritten quality between students with learning difficulties and students with good academic performance. GII, GIII and GIV: 96 students with learning difficulties, and groups GV, GVI, GVII, GVIII: 96 good academic performance. The students were submitted to evaluation of fine motor, sensorial and perception functions and handwriting evaluation under dictation. Results: the results show that the students with learning difficulties from 1st to 3rd grade had lower performance on tests of fine motor, sensory and perceptive function compared to the students with good academic performance in the same grade; the students from 4th grade, both groups, did not show changes on fine motor sensory and perceptive function; and only the students of GII showed disgraphya. Conclusions: the results presented in this study suggest that the qualitative aspects of fine motor, sensory and perceptive skills reflect the integrity and maturity of central nervous system and can probably play an important role in early diagnosis of development disorders and consequently prevent academic disorders such as handwriting performance.

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To students with special educational needs participate actively at school are required effective and systematic investment, involving the school community as a whole. The occupational therapist is one of the professionals who can facilitate this student inclusion process. This study aimed to discuss the occupational therapy intervention effects with two disability children with deficits in visual perceptual skills, motor coordination and visual motor integration, that was included in regular education. The Beery-Buktenica Developmental Test of Visual Motor Integration was use to evaluate visual perceptual skills, motor coordination and visual-motor integration. Because the deficits presented in the functions investigates was identified the need of an occupational therapy intervention program designed to improve the performance in theses functions. After the program, the test was reapplied. The results pointed to an improvement of all functions considered deficient. These results highlight to the training importance to improve the performance in abilities evaluated.

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No momento em que Grócio publica suas teorias sobre o direito natural, o teatro tematizava diversos assuntos abordados no Direito da guerra e da paz. Na Espanha, Lope de Vega defendia o tiranicídio em peças como Fuenteovejuna e Peribãnez ou O comendador de Ocanã, enquanto Grócio limitava o direito de resistência aos casos de ameaça de morte. Cervantes via na iniciativa de Lope de Vega uma perigosa concessão política ao vulgo, implicando a ocultação da técnica empregada por atores e dramaturgos, e a consequente exacerbação do apelo emocional do teatro. Grócio, por sua vez, demanda que o direito se expresse em linguagem racional, na medida em que a lei só se afirma como sanção coletiva – ao passo que o sentimento se encerra na interioridade.

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Visual-motor integration is a skill that involves visual perception and eye-hand coordination. Deficit in perceptual ability and motor organization capacity may reflect in reading, writing and arithmetic learning difficulties. This study aimed to verify the relationship between visual-motor integration ability and academic performance, as well, whether visual perception ability was correlated with reading performance and whether motor coordination ability was correlated with writing performance. Participants were 77 students in the 2nd. year of elementary education at a public school. To data collect were applied the Developmental Test of Visual-Motor Integration and the Academic Performance Test. The results showed a significant correlation between visual-motor integration ability and academic skills of reading (r = 0.230, p = 0.044), writing (r = 0.244, p = 0.033) and arithmetic (r = 0.277, p = 0.015). In addition, was also identified significant correlation between visual perception and reading performance (r = 0.407, p = 0) and between the motor coordination and cursive writing (p = 0.039). The results of this study are consistent with the literature, concerning the verification of visual-motor integration, visual perception and motor coordination abilities influence on the students performance in school activities.

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A maior parte das espécies de anuros adultos terrestres está constantemente exposta a altas taxas de perda de água por evaporação através da pele. A manutenção do balanço hídrico nestes animais envolve a absorção de água através da mancha pélvica, uma região da pele ventral altamente permeável à água, além da reabsorção de água a partir do fluido filtrado nos glomérulos ao longo do sistema tubular dos néfrons, bem como a partir da urina formada e estocada na bexiga urinária, em resposta à arginina vasotocina (AVT). O movimento de água através da membrana plasmática ocorre através de poros formados por proteínas integrais de membrana, conhecidas como aquaporinas (AQPs), e a regulação osmótica exercida pelo AVT envolve translocação de vesículas contendo AQPs do citoplasma para a membrana apical e, provavelmente, alteração na expressão de alguns tipos de AQPs. Resultados previamente obtidos no laboratório demonstraram a existência de variação interespecífica nas taxas de reidratação de três espécies de Rhinella, sendo que R. ornata apresentou taxas de reidratação significativamente menores que aquelas apresentadas por R. schneideri e R. icterica. Uma possível explicação para esta variação em taxas de reidratação poderia envolver diferenças na expressão de aquaporinas na mancha pélvica. Desta forma, o objetivo do projeto foi identificar e quantificar a expressão do RNAm de aquaporinas do tipo 1 (AQP-1) e de aquaporinas AVT dependentes pertencentes ao tipo 2a (AQP-t2 e AQP-t3) - quanto à classificação das AQPs entenda-se AQP -t aquelas que apresentam sequência gênica referentes a Rinella marina AQP -h a Hyla japonica.- nos seguintes tecidos: pele dorsal e pele ventral (mancha pélvica) de espécimes de R. schneideri e R. ornata totalmente hidratados e após submissão à desidratação correspondente a 70% da massa corpórea padrão. As hipótese ...