The progressive loss of cardiac myocytes due to cell death has been associated with cardiac dysfunction and heart failure. Which of the following would lead to a significant loss of cardiac myocytes? Select all that apply Treatment of rapamycin which results in inhibition of mTOR activity Prolonged or severe ER stress with increased accumulation of unfolded proteins Activation of AMPK and phosphorylation of the TSC1 complex mTOR activation and phosphorylation of Ulk1

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