Oxidative stress causes cardio myocyte apoptosis: May be the determinant of development
of myocardial disarray in diabetes
S.P. Lasker, C. McLachlan, L. Wang, S.M.K. Ali, H.F. Jelinek
Abstract
Oxidative stress resulting from enhanced free radical formation or defect in anti-oxidant
defence mechanism, implicates in the development of various disorders including
impairment of vasodilatation, neuro degeneration, ventricular dysfunction and changes
in cardiac muscle cells morphology. Oxidative stress activates renin aldosterone
angiotensin system and inflammatory cytokines that induce apoptosis in heart muscles.
It also decreases ATP formation that leads to apoptosis in myocyte. As a consequence,
the physical force in the heart is increased that may guide to programme cardiac
muscle cell death. The net effect of oxidative stress leads to an architectural
rearrangement of the myocardium involving side to side slippage called myocyte disarray.
Single myocyte cell death allows side by side translocation of cells. However, multiple
cells death causes sliding of the myocyte bundle. No work has yet been done to correlate
the myocardial cell slippage and oxidative stress in diabetes, in which heart muscles
apoptosis are evident. Thus the present review is done to scrutinize if there is
any role of oxidative stress on development of myocyte disarray in diabetes.
Keywords:
Oxidative stress, cardio myocyte apoptosis, myocardial disarray, diabetes.