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The lung endothelin system: a potent therapeutic target with bosentan for the amelioration of lung alterations in a rat model of diabetes mellitus.
J Endocrinol Invest ; 38(9): 987-98, 2015 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-25847324
ABSTRACT

PURPOSE:

The aim of this study is to show the effect of a new mechanism on endothelin (ET) receptors in the physiopathology of diabetes-related pulmonary injury. We tested the hypothesis that dual ET-1 receptor antagonism via bosentan can reverse diabetes-induced lung injury.

METHODS:

The rats (24 male) were separated into four groups: group 1 (HEALTHY): Control group; group 2 (DM): Streptozotocin 60 mg/kg (i.p.); group 3 (DM + BOS-1): Diabetes + bosentan 50 mg/kg per-os; group 4 (DM + BOS-2): Diabetes + bosentan 100 mg/kg per-os. The bosentan treatment was initiated immediately after the onset of STZ-induced diabetes and continued for 6 weeks.

RESULTS:

In the treatment group, SOD activity was significantly increased, although GSH and MDA levels and TNF-α and TGFgene expression were decreased. Bosentan 50 mg/kg and bosentan 100 mg/kg showed a significantly down-regulatory effect on ET-1, ET-A, and ET-B mRNA expression.

CONCLUSIONS:

In conclusion, increased endothelin levels in the lung associated with diabetes may be one cause of endothelial dysfunction, cytokine increase, and oxidant/antioxidant imbalance in the pathogenesis of complications that may develop during diabetes. With its multiple effects, bosentan therapy may be an effective option against complications that may develop in association with diabetes.
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Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: MEDLINE Assunto principal: Sulfonamidas / Diabetes Mellitus Experimental / Lesão Pulmonar Aguda / Antagonistas dos Receptores de Endotelina / Pulmão Aspecto clínico: Terapia Limite: Animais Idioma: Inglês Revista: J Endocrinol Invest Ano de publicação: 2015 Tipo de documento: Artigo