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July 30, 2004Cardiovascular Research

Myocardial ischemia resulted in a sustained increase in Ang-2 expression and a reciprocal decrease in Ang-1 at 24 hours and 1 week, with markedly increased Tie2 phosphorylation at the time of peak Ang-2 elevation.

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Population

Sprague-Dawley rats (model of myocardial infarction)

Comparison

Left coronary artery ligation vs Non-infarcted myocardium

Design

Preclinical

Follow-up

1 week

Authors

RSRobinderpal Sandhu

Discussion

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Overview

Hypothesis-generating for Ang/Tie2 modulation post-MI; leaves open whether targeting this axis improves outcomes in larger models or humans.

Structured PICO

P
Population
Sprague-Dawley rats (model of myocardial infarction)
I
Intervention
Left coronary artery ligation (myocardial ischemia)
C
Comparator
Non-infarcted myocardium
O
Outcome
Changes in gene and protein expression of Ang-1, Ang-2, and TIE-2 activitysurrogate

In a rat model of myocardial infarction, reciprocal regulation of Ang-1 and Ang-2 occurs, suggesting Ang-2 plays a predominant role in the post-MI angiogenic response.

Cite This Study

Robinderpal Sandhu (2004) studied this question.

synapsesocial.com/papers/6a71487331a3df8243297e9chttps://doi.org/10.1016/j.cardiores.2004.05.013
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Increased expression of angiopoietin-2 and Tie2 receptor in a rat model of myocardial ischaemia/reperfusion2003 · 24 citations
  2. 2Angiopoietin-2 Impairs Revascularization After Limb Ischemia2007 · 112 citations
  3. 3Induction of Angiopoietin and Tie Receptor mRNA Expression after Cerebral Ischemia–Reperfusion2000 · 139 citations
  4. 4TRANSITORY REDUCTION IN ANGIOTENSIN AT<sub>2</sub> RECEPTOR EXPRESSION LEVELS IN POSTINFARCT REMODELLING IN RAT MYOCARDIUM2004 · 21 citations
  5. 5Dynamic changes in serum angiopoietin-1, angiopoietin-2, and angiopoietin-2/angiopoietin-1 ratio in acute myocardial infarction patients treated with primary percutaneous coronary intervention2012 · 16 citations