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The role of ecto-nucleotide pyrophosphatase/phosphodiesterase 1 in diabetic nephropathy / Papel da ectonucleotídeo pirofosfatase/fosfodiesterase 1 (ENPP1) na nefropatia diabética
Sortica, Denise Alves; Crispim, Daisy; Zaffari, Guilherme Pozueco; Friedman, Rogério; Canani, Luis Henrique.
  • Sortica, Denise Alves; Hospital de Clínicas de Porto Alegre. Endocrinology Service. Porto Alegre. BR
  • Crispim, Daisy; Hospital de Clínicas de Porto Alegre. Endocrinology Service. Porto Alegre. BR
  • Zaffari, Guilherme Pozueco; Hospital de Clínicas de Porto Alegre. Endocrinology Service. Porto Alegre. BR
  • Friedman, Rogério; Hospital de Clínicas de Porto Alegre. Endocrinology Service. Porto Alegre. BR
  • Canani, Luis Henrique; Hospital de Clínicas de Porto Alegre. Endocrinology Service. Porto Alegre. BR
Arq. bras. endocrinol. metab ; 55(9): 677-685, dez. 2011. ilus, tab
Article in English | LILACS | ID: lil-610474
ABSTRACT
The increased prevalence of diabetes mellitus has caused a rise in the occurrence of its chronic complications, such as diabetic nephropathy (DN), which is associated with elevated morbidity and mortality. Familial aggregation studies have demonstrated that besides the known environmental risk factors, DN has a major genetic component. Therefore, it is necessary to identify genes associated with risk for or protection against DN. Ecto-nucleotide pyrophosphatase/phosphodiesterase 1 (ENPP1) is expressed in several tissues, including the kidneys. Increased levels of ENPP1 expression inhibit tyrosine-kinase activity of the insulin receptor in several cell types, leading to insulin resistance. K121Q polymorphism of the ENPP1 gene seems to be associated with insulin resistance and DN development. The elucidation of genetic factors and their associations will provide better understanding of the pathogenesis of DN and, may consequently, lead to a more effective approach to prevention and treatment.
RESUMO
A crescente prevalência do diabetes melito tem causado aumento na ocorrência das suas complicações crônicas, como a nefropatia diabética (ND), a qual está associada com elevada morbidade e mortalidade. Estudos de agregação familiar demonstram que a ND tem um importante componente genético, além dos conhecidos fatores de risco ambientais. Portanto, existe a necessidade de se identificarem genes associados ao risco ou proteção à ND. A ectonucleotide pyrophosphatase/phosphodiesterase 1(ENPP1) é expressa em vários tecidos, incluindo nos rins. Foi encontrado que níveis aumentados de expressão da ENPP1 inibem a atividade tirosino-quinase do receptor da insulina em vários tipos celulares, causando resistência à insulina. O polimorfismo K121Q do gene ENNP1parece estar associado com resistência à insulina e com o desenvolvimento da ND. A elucidação dos fatores genéticos e de suas associações permitirá um melhor entendimento da patogênese da ND e, consequentemente, poderemos ter uma abordagem mais efetiva em sua prevenção e tratamento.
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Full text: Available Index: LILACS (Americas) Main subject: Polymorphism, Genetic / Pyrophosphatases / Insulin Resistance / Phosphoric Diester Hydrolases / Diabetic Nephropathies Type of study: Prognostic study / Risk factors Limits: Humans Language: English Journal: Arq. bras. endocrinol. metab Journal subject: Endocrinology / Metabolism Year: 2011 Type: Article Affiliation country: Brazil Institution/Affiliation country: Hospital de Clínicas de Porto Alegre/BR

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Full text: Available Index: LILACS (Americas) Main subject: Polymorphism, Genetic / Pyrophosphatases / Insulin Resistance / Phosphoric Diester Hydrolases / Diabetic Nephropathies Type of study: Prognostic study / Risk factors Limits: Humans Language: English Journal: Arq. bras. endocrinol. metab Journal subject: Endocrinology / Metabolism Year: 2011 Type: Article Affiliation country: Brazil Institution/Affiliation country: Hospital de Clínicas de Porto Alegre/BR