Protective effect of gliclazide on diabetic peripheral neuropathy through Drp-1 mediated-oxidative stress and apoptosis.

Abstract:

OBJECTIVE:To investigate the protective effect of gliclazide and the role of dynamin-related protein l (Drp-1)-mediated oxidative stress and apoptosis in diabetic peripheral neuropathy (DPN). METHODS:Diabetic rats developed through intra-peritoneal injection of streptozotocin were randomly assigned to treatment group receiving gliclazide or non-treatment group without gliclazide treatment. Rats in control group received intra-peritoneal injection of vehicle and no gliclazide treatment. Eight weeks later, the nerve conduction velocity (NCV) of sciatic nerve was measured and the morphological alterations, the malondialdehyde (MDA) level and superoxide-dismutase (SOD) activity, the expressions of Drp-1, caspase-3, Bax and Bcl-2 in sciatic nerve were evaluated. RESULTS:When compared to rats in control group, rats in non-treatment group showed significantly decrease of NCV, obvious demyelinative alteration of sciatic nerve, increased expressions of Drp-1, caspase-3, Bax, Bcl-2 and MDA, and decreased SOD activity. Compared to rats in non-treatment group, rats in treatment group showed significantly increase of NCV, less demyelination of sciatic nerve, decreased expressions of Drp-1, caspase-3, Bax and MDA, and increased activity of SOD. The expression of Bcl-2 was not significantly different between treatment and non-treatment groups. CONCLUSION:Gliclazide showed protective effect on DPN through modulating Drp-1-mediated oxidative stress and apoptosis.

journal_name

Neurosci Lett

journal_title

Neuroscience letters

authors

Wu YB,Shi LL,Wu YJ,Xu WH,Wang L,Ren MS

doi

10.1016/j.neulet.2012.06.038

subject

Has Abstract

pub_date

2012-08-08 00:00:00

pages

45-9

issue

1

eissn

0304-3940

issn

1872-7972

pii

S0304-3940(12)00846-4

journal_volume

523

pub_type

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