نتایج جستجو برای: cerebral ischemiareperfusion injury
تعداد نتایج: 485805 فیلتر نتایج به سال:
The authors describe cerebrovascular and cerebral metabolic changes in monkeys, subjected to cerebral missile injury. After injury with BB pellet at 90 m/sec, there is a rapid rise in intracranial pressure (ICP), which reaches a peak 2 to 5 minutes posttrauma, and then falls to about 20 to 30 mm Hg. This, with a fall in mean blood pressure (MBP), results in a 50% reduction in cerebral perfusion...
OBJECTIVE To review methods of quantifying human cerebral autoregulation in health and disease. DATA SOURCES Articles and published abstracts on methods to quantify cerebral autoregulation in health and disease. SUMMARY OF REVIEW Cerebral autoregulation is defined as the relationship between cerebral blood flow and cerebral perfusion pressure. Complex neurohumoral processes are involved in ...
OBJECTIVE Hypoxic-ischemic white mater brain injury commonly occurs in neonates with hypoplastic left heart syndrome (HLHS). Approximately one half of HLHS survivors will exhibit neurobehavioral symptoms believed to be associated with this injury, although the exact timing of the injury is unknown. METHODS Neonates with HLHS were recruited for pre- and postoperative monitoring of cerebral oxy...
Cerebral ischemia/reperfusion (I/R) injury-induced cellular apoptosis contributes to neuronal death in ischemic stroke, while endoplasmic reticulum stress (ERS) and subsequently triggered unfolded protein response (UPR) are the major mechanisms of cerebral I/R injury-induced apoptosis. A number of studies indicated that apelin-13 protects neurons from I/R injury-induced apoptosis. Apelin-36, th...
We demonstrate that in head injuries the degree of cerebral endothelial activation or injury depends on the type of brain injury and the patients age, and that in severe head injuries measuring the serum levels of thrombomodulin (TM) and von Willebrand factor (vWF) is useful in evaluating cerebral endothelial injury and activation. The values of vWF in the cases of focal brain injury were signi...
Cerebral ischemia is the most common cerebrovascular disease worldwide. Recent studies have demonstrated that curcumin had beneficial effect to attenuate cerebral ischemic injury. However, it is unclear how curcumin protects against cerebral ischemic injury. In the present study, using rat middle cerebral artery occlusion model, we found that curcumin was a potent PPAR γ agonist in that it upre...
Calbindin is a calcium binding protein that controls intracellular calcium levels and has a neuroprotective function against apoptotic stimuli. We investigated the expression of calbindin in ischemic brain injury. Focal cerebral ischemia was induced in male rats by middle cerebral artery occlusion (MCAO) and cerebral cortices were collected 24 h after MCAO. Cerebral ischemia significantly incre...
Cerebral perfusion pressure (CPP) is the net gradient that drives oxygen delivery to cerebral tissue. It difference between mean arterial (MAP) and intracranial (ICP), CPP = MAP-CVP or =MAP – ICP if ICP>CVP. must be maintained within narrow limits because too litle could cause brain tissue become ischemic, much raise pressure. The normal range lies 60 80 mmHg, but these values can shift left...
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