The present study was to investigate the effect of pharmacological preconditioning of total flavones of abelmoschl manihot (TFA) on cerebral ischemic reperfusion injury in rats. Rat cerebral ischemia/reperfusion injury was induced by occluding the right middle cerebral artery (MCA). The infarct size was determined by staining with 2,3,5-triphenyl tetrazalium chloride (TTC). The serum malonaldeh...

Neutrophils are pivotal in the pathogenesis of ischemia-reperfusion (I/R) injury leading to muscle damage. Firm adhesion of neutrophils to the endothelium is initiated by an interaction between intercellular adhesion molecular-1 (ICAM-1) on the endothelium and beta(2)-integrins on neutrophils. Inhibition of ICAM-1-dependent binding using monoclonal antibodies has been shown to be efficacious in...

Background: Cerebral ischemic reperfusion injury (CI/RI) is a common cerebrovascular disease with high morbidity and disability that threatens human health. This study was conducted to explore the effects of dexmedetomidine (Dex) on c-Jun N-terminal kinase (JNK) pathway in CI/RI, provide theoretical basis for recovery brain function after cerebral ischemia.

introduction: development of brain edema following focal cerebral ischemia exacerbates primary ischemic injury. blood brain barrier (bbb) opening is an important part of edema named as vasogenic brain edema. in this study, quantitative alterations of bbb permeability is experimentally evaluated using transient focal cerebral ischemia in the rat. methods: two groups of male rats (ischemic and sh...

Reperfusion is the definitive treatment to salvage ischemic myocardium from infarction. A primary determinant of infarct size is the duration of ischemia. In myocardium that has not been irreversibly injured by ischemia, reperfusion induces additional injury in the area at risk. The heart has potent innate cardioprotective mechanisms against ischemia-reperfusion that reduce infarct size and oth...

Patients undergoing transplantation are at high risk for leukocyte-mediated morbidity because of activated neutrophils and oxygen free radicals. This type of injury is most prominent during the reperfusion stage of transplantation. When tissue becomes ischemic, normal oxidation is altered. As oxygen is reintroduced to the system, oxygen free radical formation occurs via the oxidation of hypoxan...

The present study has been designed to investigate the potential role of ubiquitin proteasome system and other proteases in acute as well as delayed aspects of ischemic preconditioning induced reversal of ischemia-reperfusion injury in mouse brain. Bilateral carotid artery occlusion of 17 min followed by reperfusion for 24 h was employed in present study to produce ischemia and reperfusion indu...

background: renal ischemia reperfusion injury may occur in a variety of clinical situations, following a transient drop in total or regional blood flow to the kidney. this study was performed to investigate the protective effects of different antioxidants such as vitamin c, vitamin e, hydrocortisone and combination of these agents against experimental renal ischemia-reperfusion injury. method:...

OBJECTIVES This study was designed to see if ischemic postconditioning could attenuate ischemic reperfusion injury of transplanted lungs recovered from non-heart-beating donors. MATERIALS AND METHODS Forty Sprague-Dawley rats were randomized into 2 groups: the control group and the ischemic postconditioning group, with 10 donor rats paired with 10 recipient rats in each group. Twenty rats und...

Transient receptor potential vanilloid 4 (TRPV4) channel is a member of transient receptor potential superfamily. TRPV4 is selectively permeable to calcium. Activation of the TRPV4 channel induces an increase in intracellular calcium concentration and plays an important role under physiological and pathological conditions. Especially, there is evidence showing that TRPV4 is involved in cerebral...