OBJECTIVES This study tests the hypothesis that local or remote ischemic preconditioning may protect the intestinal mucosa against ischemia and reperfusion injuries resulting from temporary supraceliac aortic clamping. METHODS Twenty-eight Wistar rats were divided into four groups: the sham surgery group, the supraceliac aortic occlusion group, the local ischemic preconditioning prior to supr...

OBJECTIVE To evaluate the effects of different times of ischemic preconditioning (IPC) on intestinal bacterial translocation (BT). METHODS Thirty Wistar rats weighing 280 ± 27 g were divided into five groups. In the IR group (n = 6), laparotomy was performed and the superior mesenteric artery was occluded by an atraumatic microclamp for 30 minutes. In the four preconditioning groups (n = 6 ea...

This review focuses on the genomic response following a preconditioning stimulus. Initial studies demonstrated that classical ischemic preconditioning mediated by cyclic episodes of short durations of reversible ischemia and reperfusion could result in the reprogramming of gene expression. Some of these genes are translated into proteins during the late preconditioning or so-called "second wind...

The quote "what does not kill you makes you stronger" perfectly describes the preconditioning phenomenon - a paradigm that affords robust brain tolerance in the face of neurodegenerative insults. Over the last few decades, many attempts have been made to identify the molecular mechanisms involved in preconditioning-induced protective responses, and recent data suggests that many of these mechan...

schemic preconditioning is the one maneuver that has onsistently been shown to reduce myocardial necrosis due o ischemia/reperfusion injury in experimental models (1). rief coronary occlusions of a few minutes to 10 min ollowed by brief reperfusion periods markedly reduce the ize of a subsequent myocardial infarction (MI) induced by longer coronary artery occlusion followed by reperfusion. he a...

BACKGROUND AND PURPOSE Systemic administration of cytosine-guanine (CpG) oligodeoxynucleotides provides neuroprotection against subsequent cerebral ischemic injury. We examined the genomic response of leukocytes and brain cells after ischemia in the context of CpG preconditioning. METHODS RNA was isolated from circulating leukocytes and ischemic cortex 3 and 24 hours after middle cerebral art...