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Doctoral Thesis
DOI
https://doi.org/10.11606/T.5.2004.tde-31032004-134559
Document
Author
Full name
Andrea Sterman Heimann
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2003
Supervisor
Committee
Krieger, Jose Eduardo (President)
Bicudo, Jose Eduardo Pereira Wilken
Carmona, Adriana Karaoglanovic
Franchini, Kleber Gomes
Onuchic, Luiz Fernando
Title in Portuguese
"O gene da enzima conversora de angiotensina I influencia as alterações do diabetes"
Keywords in Portuguese
camundongos
diabetes
enzima conversora de angiotensina I
humanos
metabolismo
Obesidade
peptídeos
Vitoria
Abstract in Portuguese
Estudamos a relação entre fenótipos do diabetes e obesidade com o genótipo da ECA, em humanos e camundongos. Analisamos fenótipos relacionados com obesidade em 1600 indivíduos da população de Vitória (genotipados para o polimorfismo I/D da ECA) e em camundongos com 1 a 3 cópias do gene da ECA, submetidos ou não à dieta rica em gordura ou diabetes. Camundongos com 3 cópias e alimentados com dieta rica em gordura apresentaram menor peso, gordura periepididimal e insulinemia. Já no grupo diabético os camundongos com 3 cópias apresentaram maior mortalidade. A relação fenótipo e genótipo encontrada nos camundongos repetiu-se no estudo populacional. Estes resultados dão suporte à idéia de que o gene da ECA é um importante fator determinante nos fenótipos relacionados a doenças complexas como a síndrome X.
Title in English
Angiotensin converting enzyme (ACE) gene influences diabetes phenotypes
Keywords in English
angiotensin converting enzyme
diabetes
human
metabolism
mice
Obesity
peptides
Vitoria
Abstract in English
We studied the relationship between obesity and diabetes phenotypes with ACE genotypes using a human population (1600 individuals where ACE I/D polymorphism was determined) and engineered ACE mice models (nondiabetic or diabetic under high fat diet or control diet). Body weight, periepididymal adipose tissue weight and insulin levels were lower in 3 copies under high fat diet. Diabetic 3 copies mice had higher mortality. Presence of D allele was significantly associated with decreased body fat percentage in individuals who were at increases risk of being hyperinsulinemic. Taken together these results provide evidence for a direct role of ACE in obesity phenotypes, which may be important to unravel the complexities of metabolic syndrome.
 
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TESE-ANDREA-151203.pdf (601.02 Kbytes)
Publishing Date
2004-04-05
 
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