scholarly journals Chronic alcohol consumption increases the sensitivity of rat liver mitochondrial respiration to inhibition by nitric oxide

Hepatology ◽  
2003 ◽  
Vol 38 (1) ◽  
pp. 141-147 ◽  
Author(s):  
A Venkatraman
Keyword(s):  
Nitric Oxide ◽  
Alcohol Consumption ◽  
Rat Liver ◽  
Mitochondrial Respiration ◽  
Chronic Alcohol ◽  
Chronic Alcohol Consumption

Temporal effect of alcohol consumption on reactivity of pial arterioles: role of oxygen radicals

2001 ◽  
Vol 280 (3) ◽  
pp. H992-H1001 ◽  
Author(s):  
Hong Sun ◽  
William G. Mayhan
Keyword(s):  
Nitric Oxide ◽  
Free Radicals ◽  
Alcohol Consumption ◽  
Nitric Oxide Synthase ◽  
Chronic Alcohol ◽  
Chronic Alcohol Consumption ◽  
Oxygen Derived Free Radicals ◽  
Pial Arterioles ◽  
Oxide Synthase

Chronic alcohol consumption reduces nitric oxide synthase-dependent responses of pial arterioles via mechanisms that remain uncertain. In addition, the temporal effects of alcohol on pial arterioles is unclear. Thus our goals were to examine the role of oxygen-derived free radicals in alcohol-induced impairment of cerebrovascular reactivity and the temporal effect of alcohol on reactivity of pial arterioles. Sprague-Dawley rats were pair-fed a liquid diet with or without alcohol for 2–3 wk, 2–3 mo, or 5–6 mo. We measured the in vivo diameter of pial arterioles in response to nitric oxide synthase-dependent dilators acetylcholine and ADP and the nitric oxide synthase-independent dilator nitroglycerin. In nonalcohol-fed rats, acetylcholine (1.0 and 10 μM) and ADP (10 and 100 μM) produced dose-related dilatation of pial arterioles. Whereas there was no difference in reactivity of arterioles to the agonists in rats fed the nonalcohol and alcohol diets for a period of 2–3 wk, there was a significant impairment in reactivity of arterioles to acetylcholine and ADP, but not nitroglycerin, in rats fed the alcohol diet for longer durations. We then found that treatment with superoxide dismutase did not alter baseline diameter of pial arterioles in nonalcohol-fed or alcohol-fed rats, but significantly improved impaired nitric oxide synthase-dependent dilatation of pial arterioles in alcohol-fed rats. Thus our findings suggest a temporal relationship in the effects of alcohol on reactivity of pial arterioles and that impaired nitric oxide synthase-dependent cerebral vasodilatation during chronic alcohol consumption may be related, in part, to enhanced release of oxygen-derived free radicals.

Fibrosis in small syngeneic rat liver grafts because of damaged bone marrow stem cells from chronic alcohol consumption

2017 ◽  
Vol 23 (12) ◽  
pp. 1564-1576
Author(s):  
Masayuki Hisada ◽  
Xiuying Zhang ◽  
Yoshihiro Ota ◽  
Andrew M. Cameron ◽  
James Burdick ◽  
...  
Keyword(s):  
Stem Cells ◽  
Bone Marrow ◽  
Alcohol Consumption ◽  
Rat Liver ◽  
Bone Marrow Stem Cells ◽  
Chronic Alcohol ◽  
Chronic Alcohol Consumption
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