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Study on the Cardioprotection and Humoral Mechanism of Limb Ischemia Preconditioning

2014-08-27 03:13:54 | BioPortfolio

Summary

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.

Description

We aim to assess whether limb ischemic preconditioning protects remote tissue or organs through a humoral mechanism.

Study Design

Allocation: Randomized, Control: Active Control, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment

Conditions

Ischemic Preconditioning

Intervention

limb ischemia preconditioning

Location

proteomics lab of Sun Yat-sen University
Guangzhou
Guangdong
China
510080

Status

Completed

Source

Sun Yat-sen University

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:13:54-0400

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PubMed Articles [2644 Associated PubMed Articles listed on BioPortfolio]

Repeated Non-Invasive Limb Ischemic Preconditioning Confers Cardioprotection Through PKC-Ԑ/STAT3 Signaling in Diabetic Rats.

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Mirna-Mediated Mechanisms of Cardiac Protection in Ischemic and Remote Ischemic Preconditioning - A Qualitative Systematic Review.

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To evaluate whether combining hypothermia and remote ischemic preconditioning (RIPC) results in protection from ischemia-reperfusion (IR).

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Medical and Biotech [MESH] Definitions

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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