Why the study?
Does β-adrenergic receptor stimulation induce toxicity in STAT3-deficient cardiomyocytes?
Does β-adrenergic receptor stimulation induce toxicity in STAT3-deficient cardiomyocytes?
β-adrenergic receptor stimulation induces toxic cellular alterations in STAT3-deficient cardiomyocytes, which may underlie dobutamine-induced irreversible heart failure progression in peripartum cardiomyopathy patients.
May warrant caution with β-agonists in STAT3-related states; leaves open translation to peripartum cardiomyopathy.
Iso impairs glucose uptake, induces energy depletion, oxidative stress, dysfunction, and death in STAT3-deficient cardiomyocytes mainly via β1-AR stimulation. These cellular alterations may underlie the dobutamine-induced irreversible heart failure progression in PPCM patients who frequently display reduced cardiac STAT3 expression.
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Stapel et al. (2016) studied this question.
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