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. 2022 Jul 22;9:947778. doi: 10.3389/fmolb.2022.947778

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Copyright © 2022 Liang, Miao, Teng, Xiao, Guo, Xue, Tian, Jin and Wu.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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H₂S improved cardiac function in aging rats. (A) Representative images of the PW Doppler-mode by echocardiography indicated E′ wave and A′ wave in aging rats. (B) E′ wave/A′ wave ratios in aging rats. (C) Values of CO in aging rats. (D) Values of +dp/dt_max in aging rats. (E) Values of −dp/dt_max in aging rats. (F) Values of LVEDP in aging rats. Results are means ± SEM. A p-value of <0.05 was considered significant. +dp/dtmax: the maximum rate of left ventricular pressure rise. −dp/dtmax: the maximum rate of left ventricular pressure fall. LVEDP: left ventricular end diastolic pressure.