Key result
Exposure of cultured vascular smooth muscle cells to hypoxia and high glucose markedly upregulated AT1 receptor expression and enhanced ANG II-induced cell proliferation.
Why the study?
Does hypoxia and high glucose upregulate AT1 receptor expression and potentiate ANG II-induced proliferation in cultured VSM cells?
Population
Cultured vascular smooth muscle (VSM) cells
Comparison
Hypoxia and high glucose medium, with or without… vs Normoxic conditions and normal glucose medium
Design
Preclinical
Follow-up
6-24 hours
Authors
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Hypothesis-generating for AT1-mediated vascular remodeling in diabetes; in vivo studies required before clinical translation.
Does hypoxia and high glucose upregulate AT1 receptor expression and potentiate ANG II-induced proliferation in cultured VSM cells?
Hypoxia and high glucose synergistically upregulate AT1 receptor expression and enhance ANG II-induced proliferation in vascular smooth muscle cells, suggesting a mechanism for accelerated atherosclerosis in diabetes.
Sodhi et al. (2003) studied this question. Hypoxia and high glucose vs. Normoxic conditions and normal glucose was evaluated on AT1 receptor expression and cell proliferation. Exposure of cultured vascular smooth muscle cells to hypoxia and high glucose markedly upregulated AT1 receptor expression and enhanced ANG II-induced cell proliferation.
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