Streptozotocin-induced diabetes in the rat is associated with enhanced tissue hydrogen sulfide biosynthesis.

Abstract:

:This investigation is aimed to determine whether the biosynthesis of H(2)S, an endogenous vasodilator gas, is altered in the streptozotocin-diabetic rat. Plasma H(2)S concentration as well as the activity, and expression, of H(2)S synthesizing enzymes (namely cystathionine-gamma-lyase (CSE) and cystathionine-beta-synthetase (CBS)) were measured in various tissues of non-diabetic, streptozotocin-diabetic and insulin-treated diabetic rats. H(2)S formation in pancreas and liver was increased in diabetic rats. Both CSE and CBS mRNAs were increased in liver of diabetic animals. Similarly, CBS mRNA was increased in pancreas. Insulin treatment restored the changes in H(2)S metabolism seen. The findings of this study suggest that the metabolism of H(2)S in pancreas and liver is altered in the streptozotocin-diabetic rat. This is the first study in which a derangement in H(2)S biosynthesis in diabetes has been demonstrated. H(2)S may play a part in the aetiology or development of diabetes in this animal model.

authors

Yusuf M,Kwong Huat BT,Hsu A,Whiteman M,Bhatia M,Moore PK

doi

10.1016/j.bbrc.2005.06.021

subject

Has Abstract

pub_date

2005-08-12 00:00:00

pages

1146-52

issue

4

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(05)01229-5

journal_volume

333

pub_type

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