Key result
Targeted deletion of the MMP-9 gene significantly restored endocardial endothelial-myocyte coupling and attenuated myocardial contractile dysfunction in mice with chronic volume overload.
Why the study?
Does targeted deletion of MMP-9 prevent endocardial endothelial-myocyte uncoupling and myocardial contractile dysfunction in a mouse model of chronic volume overload?
Does targeted deletion of MMP-9 prevent endocardial endothelial-myocyte uncoupling and myocardial contractile dysfunction in a mouse model of chronic volume overload?
p-value: p=<0.05
Targeted deletion of MMP-9 restores endocardial endothelial-myocyte coupling in a mouse model of chronic volume overload, suggesting MMP-9 activation causes EM uncoupling and myocardial contractile dysfunction.
No takes yet. Share an insight, caveat, or question.
Preclinical MMP-9 data in volume overload warrant no practice change; leaves open human validation of EM uncoupling.
Moshal et al. (2008) studied Chronic volume overload-induced heart failure (n=24). Targeted deletion of MMP-9 (MMP-9 knockout) vs. Wild type (WT) mice was evaluated on Endocardial endothelial-myocyte coupling (relaxation to acetylcholine and nitroprusside) (p=<0.05). Targeted deletion of the MMP-9 gene significantly restored endocardial endothelial-myocyte coupling and attenuated myocardial contractile dysfunction in mice with chronic volume overload.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: