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Numerous studies Have shown that limb ischemic preconditioning can protect vital organs (including the heart) from ischemia-reperfusion injury,which has a broad application prospect.But its mechanism is still unclear. Evidence showed that humoral mechanisms may play an important role. This study was carried out on the limb ischemic preconditioning in healthy volunteers, collected their serum at different time points before and after treatment,classified and identified the serum proteins during different periods of limb ischemic preconditioning,by using methods including high abundant protein removal,Two-dimensional electrophoresis chromatography and mass spectrometry,then analysed activation and synthesis of the proteins in order to search for the proteins or peptides whose synthesis was activated by ischemic preconditioning. This study will be the first systemic explore of the changes in serum proteins of limb ischemic preconditioning in human body,and lay theoretical basis for the clinical application of limb ischemic preconditioning and for further explore of its humoral mechanism,thus provide clues for searching for protein or peptide having protective effects for organs.
We aim to assess whether limb ischemic preconditioning protects remote tissue or organs through a humoral mechanism.
Allocation: Randomized, Control: Active Control, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment
limb ischemia preconditioning
proteomics lab of Sun Yat-sen University
Sun Yat-sen University
Published on BioPortfolio: 2014-08-27T03:13:54-0400
In remote preconditioning, ischemia in one organ protects distant organs from ischemic insults. e.g. brief induced limb ischemia protects the brain from an otherwise more severe stroke. ...
Ischemia reperfusion injury may be reduced by ischemic preconditioning. This projects aims to show the effects of short and long time ischemic preconditioning (both sequences 3 x 5 minutes...
Previously, the preconditioning signaling pathways have been studied on molecular level or in animal model. By using MR spectroscopy and imaging in a dynamic human model of preconditioning...
We would like to determine if remote ischemic leg preconditioning in healthy volunteers improves cerebral vasomotor reactivity as measured by breath holding and transcranial doppler vasomo...
Remote ischemic preconditioning (RIPC) of the myocardium by limb ischemia/reperfusion may mitigate cardiac damage, but its interaction with the anesthetic regimen is unknown.
Protein kinase C(PKC)-ε activation is a mechanism of preconditioning cardioprotection but its role in repeated non-invasive limb ischemic preconditioning (rNLIP) mediated cardioprotection against myo...
Ischemic preconditioning (IPC) and remote ischemic preconditioning (RIPC) protect myocardial tissue against subsequent ischemia and reperfusion injury (IRI) and have a high potential to improve patien...
To evaluate whether combining hypothermia and remote ischemic preconditioning (RIPC) results in protection from ischemia-reperfusion (IR).
Submandibular gland autotransplantation is an effective approach for treating severe keratoconjunctivitis sicca. However, ischemia/reperfusion (I/R) injury, which inevitably occurs during transplantat...
To investigate the cardioprotective effects of ischemic preconditioning (preIC) and postconditioning (postIC) in animal model of cardiac ischemia/reperfusion.
A technique in which tissue is rendered resistant to the deleterious effects of prolonged ischemia and reperfusion by prior exposure to brief, repeated periods of vascular occlusion. (Am J Physiol 1995 May;268(5 Pt 2):H2063-7, Abstract)
The application of repeated, brief periods of vascular occlusion at the onset of REPERFUSION to reduce REPERFUSION INJURY that follows a prolonged ischemic event. The techniques are similar to ISCHEMIC PRECONDITIONING but the time of application is after the ischemic event instead of before.
Exposure of myocardial tissue to brief, repeated periods of vascular occlusion in order to render the myocardium resistant to the deleterious effects of ISCHEMIA or REPERFUSION. The period of pre-exposure and the number of times the tissue is exposed to ischemia and reperfusion vary, the average being 3 to 5 minutes.
A disorder characterized by a reduction of oxygen in the blood combined with reduced blood flow (ISCHEMIA) to the brain from a localized obstruction of a cerebral artery or from systemic hypoperfusion. Prolonged hypoxia-ischemia is associated with ISCHEMIC ATTACK, TRANSIENT; BRAIN INFARCTION; BRAIN EDEMA; COMA; and other conditions.
Restoration of blood supply to tissue which is ischemic due to decrease in normal blood supply. The decrease may result from any source including atherosclerotic obstruction, narrowing of the artery, or surgical clamping. It is primarily a procedure for treating infarction or other ischemia, by enabling viable ischemic tissue to recover, thus limiting further necrosis. However, it is thought that reperfusion can itself further damage the ischemic tissue, causing REPERFUSION INJURY.
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