Key result
TGF-beta1 increases ROS production ~90% in rat myocytes, paralleling impaired contraction and relaxation.
p-value: p=< 0.05
TGF-beta1 induces cardiomyocyte contractile dysfunction through enhanced ROS production and oxidative alterations, which can be prevented by antioxidants.
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Oxidative stress pathways merit exploration in contractile dysfunction models; animal data leave open clinical translation of antioxidant strategies.
Li et al. (2007) studied this question. TGF-beta1 vs. control was evaluated on ROS production, intracellular glutathione (GSH), and myocyte shortening and relaxation rates (p=< 0.05). TGF-beta1 increased ROS production by 90% and decreased GSH by 34% in rat ventricular myocytes, paralleling a 33% decrease in shortening rate and 43% decrease in relaxation rate (P<0.05).
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