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排序方式: 共有3463条查询结果,搜索用时 15 毫秒
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Fátima Karoline Araújo Alves Dultra Adna Conceição Barros Helenemarie Schaer‐Barbosa Andréia Leal Figueiredo Clarissa Araújo Silva Gurgel Eduardo Antônio Gonçalves Ramos Ana Maria da Silva Carvalho Jean Nunes dos Santos 《Journal of oral pathology & medicine》2012,41(1):47-53
J Oral Pathol Med (2012) 41 : 47–53 Objective: The aim of this study was to investigate the presence of CD1a‐positive Langerhans cells and their relationship with E‐cadherin in minor salivary gland tumors. Methods: Twenty‐seven minor salivary gland tumors were investigated using immunohistochemistry for CD1a and E‐cadherin. Results: A significant difference regarding the mean density of CD1a‐positive Langerhans cells was observed between pleomorphic adenomas and malignant tumors studied (P = 0.001). No CD1a‐positive cells were detected in most cases (n = 5) of cystic adenoid carcinomas. CD1a‐positive cells were detected in one mucoepidermoid carcinoma case, and six low‐grade polymorphous adenocarcinomas cases. Comparison of the mean density of CD1a‐positive cells between the three malignant tumors showed no significant difference (P = 0.127). No significant difference was observed in the presence of E‐cadherin between tumors (P = 0.73), but it was detected in 24 cases. Conclusions: The lack of CD1a‐positive in malignant salivary gland tumors facilitates the neoplastic development and suggests that these cells might be useful as auxiliary diagnostic and prognostic tool in minor salivary gland tumors. Furthermore, it is suggested that E‐cadherin mediates cell adhesion in these tumors although we did not demonstrate significance. 相似文献
75.
Steven Appleby MD Kent Mcallister RT Morton J. Kern MD 《Catheterization and cardiovascular interventions》2008,71(6):800-802
After inserting a catheter into a vessel, guidewire exchange technique must be used to maintain vascular access. If the lumen of the catheter is blocked and the guidewire exchange cannot be used, the catheter can only be removed, vascular access is lost, and an alternate vascular approach attempted. We describe a technique to remove the blocked catheter and still maintain vascular access. © 2008 Wiley‐Liss, Inc. 相似文献
76.
Jie Shang Jeanette C. Reece Daniel D. Buchanan Graham G. Giles Jane C. Figueiredo Graham Casey Steven Gallinger Stephen N. Thibodeau Noralane M. Lindor Polly A. Newcomb John D. Potter John A. Baron John L. Hopper Mark A. Jenkins Aung Ko Win 《International journal of colorectal disease》2016,31(8):1451-1457
Purpose
Gallbladder diseases and cholecystectomy may play a role in the development of colorectal cancer (CRC). Our aim was to investigate the association between cholecystectomy and CRC risk overall and by sex, family history, anatomical location, and tumor mismatch repair (MMR) status.Methods
This study comprised 5847 incident CRC cases recruited from population cancer registries in Australia, Canada, and the USA into the Colon Cancer Family Registry between 1997 and 2012 and 4970 controls with no personal history of CRC who were either randomly selected from the general population or were spouses of the cases. The association between cholecystectomy and CRC was estimated using logistic regression, after adjusting for confounding factors.Results
Overall, there was no evidence for an association between cholecystectomy and CRC (odds ratio [OR] = 0.88, 95 % confidence interval 0.73, 1.08). In the stratified analyses, there was no evidence for a difference in the association between women and men (P = 0.54), between individuals with and without family history of CRC in first-degree relative (P = 0.64), between tumor anatomical locations (P = 0.45), or between MMR-proficient and MMR-deficient cases (P = 0.54).Conclusion
Cholecystectomy is not a substantial risk factor for CRC, regardless of sex, family history, anatomical location, or tumor MMR status.77.
Saidy Vásconez Noguera Evelyn Patrícia Sánchez Espinoza Marina Farrel Côrtes Izabel Cristina Vilela Oshiro Fernanda de Sousa Spadão Laura Maria Brasileiro Brandão Ana Natiele da Silva Barros Sibeli Costa Bianca Leal de Almeida Paula Gemignani Soriano Alessandra Grassi Salles Mirian Elizabete Marques Escorcio Cristina Madeira Barretti Fernanda Spadotto Baptista Glaura Souza Alvarenga Igor Marinho Leila Suemi Harima Letaif Ho Ye Li Silvia Figueiredo Costa 《American journal of infection control》2021,49(4):512-515
78.
N. Noel L. Morin L. Savale T. Pham R. Colle S. Figueiredo A. Harrois M. Gasnier A.L. Lecoq O. Meyrignac E. Baudry A. Beurnier L. Dortet I. Hardy-Léger F. Radiguer S. Sportouch M. Zaidan L. Becquemont X. Monnet 《La Revue de médecine interne / fondée ... par la Société nationale francaise de médecine interne》2021
79.
Thiago Magalh?es da Silva M R Sandhya Rani Gustavo Nunes de Oliveira Costa Maria A Figueiredo Paulo S Melo Jo?o F Nascimento Neil D Molyneaux Maurício L Barreto Mitermayer G Reis M Glória Teixeira Ronald E Blanton 《European journal of human genetics : EJHG》2015,23(7):984-989
The degree of admixture in Brazil between historically isolated populations is complex and geographically variable. Studies differ as to what the genetic and phenotypic consequences of this mixing have been. In Northeastern Brazil, we enrolled 522 residents of Salvador and 620 of Fortaleza whose distributions of self-declared color were comparable to those in the national census. Using the program Structure and principal components analysis there was a clear correlation between biogeographic ancestry and categories of skin color. This correlation with African ancestry was stronger in Salvador (r=0.585; P<0.001) than in Fortaleza (r=0.236; P<0.001). In Fortaleza, although self-declared blacks had a greater proportion of European ancestry, they had more African ancestry than the other categories. When the populations were analyzed without pseudoancestors, as in some studies, the relationship of ‘race'' to genetic ancestry tended to diffuse or disappear. The inclusion of different African populations also influenced ancestry estimates. The percentage of unlinked ancestry informative markers in linkage disequilibrium, a measure of population structure, was 3–5 times higher in both Brazilian populations than expected by chance. We propose that certain methods, ascertainment bias and population history of the specific populations surveyed can result in failure to demonstrate a correlation between skin color and genetic ancestry. Population structure in Brazil has important implications for genetic studies, but genetic ancestry is irrelevant for how individuals are treated in society, their health, their income or their inclusion. These track more closely with perceived skin color than genetic ancestry. 相似文献
80.
Mariana Angélica Peixoto De Souza Marisa Cotta Mancini Wendy Jane Coster Renata Noce Kirkwood Elyonara Mello De Figueiredo Rosana Ferreira Sampaio 《Revista brasileira de fisioterapia (S?o Carlos (S?o Paulo, Brazil))》2018,22(2):135-143