Role of Kupffer cells in the release of nitric oxide and change of portal pressure after ethanol perfusion in the rat liver.
نویسندگان
چکیده
The objective of this study was to elucidate the role of Kupffer cells during the increase of portal vein pressure caused by ethanol. We measured nitric oxide (NO) in the perfused rat liver using a commercial NO meter. Ethanol perfusion increased NO release and portal vein pressure. Gadolinium chloride pretreatment reduced the increase in portal vein pressure during the early phase of ethanol perfusion, but did not affect the release of NO after ethanol infusion. These findings suggest that Kupffer cells play an important role in liver microcirculation during the early stage of ethanol intake, but that the mechanism may not be regulated by NO.
منابع مشابه
Effects of lipopolysaccharide-induced septic shock on rat isolated kidney, possible role of nitric oxide and protein kinase C pathways
Objective(s): Pathophysiology of sepsis-associated renal failure (one of the most common cause of death in intensive care units) had not been fully determined. The effect of nitric oxide and protein kinase C (PKC) pathways in isolated kidney of Lipopolysaccharide-treated (LPS) rats were investigated in this study. Materials and Methods: Vascular responsiveness to phenylephrine and acetylcholine...
متن کاملمقایسه میزان ترشح نیتریک اکساید توسط سلولهای بنیادی مزانشیمی مشتقشده از بافت چربی در زنان باردار سالم و مبتلا به پراکلامپسی
Background and Objective: Preeclampsia is one of the most common complications during pregnancy that occurs after 20th weeks of pregnancy in women with normal blood pressure. The pathophysiology of this disease is unknown. Due to changes in serum level of nitric oxide in women with preeclampsia and also the important role of mesenchymal stem cells in the secretion of nitric oxide as an...
متن کاملEffect of dexamethasone on the endothelin-1 (ET-1) and endothelial nitric oxide synthase (eNOS) genes expression during hepatic warm ischemia/reperfusion in rat
Background: Hepatic ischemia/reperfusion injury (I/RI) is a multifactorial pathophysiologic process which can lead to liver damage and dysfunction. This study examined the protective effect of dexamethasone on the gene expression of endothelial nitric oxide synthase (eNOS) and endothelin-1 (ET-1) and on the liver tissue damage during warm hepatic I/R. Materials and Methods: A total of 32 mal...
متن کاملMinocycline attenuates cirrhotic cardiomyopathy and portal hypertension in a rat model: Possible involvement of nitric oxide pathway
Objective(s): An increase in nitric oxide (NO) production has been reported in cirrhotic cardiomyopathy and, portal hypertension. Since minocycline has been shown to inhibit NO overproduction, we aimed to examine its role in a rat model of CCl4-induced cirrhotic cardiovascular complications. Materials and Methods: Portal pressure and inotropic responsiveness of isolated papillary muscles to is...
متن کاملThe effects of Mas receptor antagonist (A779) and renal perfusion pressure on serum nitrite concentration in male and female rats when angiotensin II receptors 1 & 2 were blocked
Introduction: Renin angiotensin system has an important role in blood pressure and renal functions. Active angiotensin-converting enzyme 2 converts angiotensin I into angiotensin-(1-7) which is a vasodilator hormone and interacts with nitric oxide changes as well as other angiotensin II receptors. In this study we evaluated the role of Mas receptor antagonist (A779) and renal perfusion press...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Alcohol and alcoholism
دوره 35 1 شماره
صفحات -
تاریخ انتشار 2000