Key result
In isolated perfused rat hearts, alpha-adrenergic blockade with phentolamine, but not beta-adrenergic blockade with propranolol, significantly inhibited ischemia-stimulated GLUT4 translocation and FDG uptake (P<0.05).
Why the study?
Does alpha- or beta-adrenergic stimulation mediate ischemia-induced GLUT4 and GLUT1 translocation in the isolated perfused rat heart?
Does alpha- or beta-adrenergic stimulation mediate ischemia-induced GLUT4 and GLUT1 translocation in the isolated perfused rat heart?
p-value: p=<0.05
Alpha-adrenoceptor stimulation, but not beta-adrenergic activation, mediates ischemia-induced glucose transporter trafficking and FDG uptake in the isolated rat heart.
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Alpha-adrenergic blockade attenuates ischemia-driven GLUT4 translocation in perfused rat hearts; extends mechanistic understanding but leaves open translation to clinical ischemia.
Egert et al. (1999) studied Ischemia. Alpha-adrenergic and beta-adrenergic antagonists (phentolamine and propranolol) vs. Control / Ischemia alone was evaluated on GLUT4 and GLUT1 translocation and FDG uptake (p=<0.05). In isolated perfused rat hearts, alpha-adrenergic blockade with phentolamine, but not beta-adrenergic blockade with propranolol, significantly inhibited ischemia-stimulated GLUT4 translocation and FDG uptake (P<0.05).
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