Hydroxychloroquine Mitigates Dilated Cardiomyopathy Phenotype in Transgenic D94A Mice.
Hydroxychloroquine Mitigates Dilated Cardiomyopathy Phenotype in Transgenic D94A Mice.
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DOI:
10.3390/ijms232415589
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发表时间:
2022-12-09
影响因子:
5.6
通讯作者:
中科院分区:
文献类型:
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作者:
In this study, we aimed to investigate whether short-term and low-dose treatment with hydroxychloroquine (HCQ), an antimalarial drug, can modulate heart function in a preclinical model of dilated cardiomyopathy (DCM) expressing the D94A mutation in cardiac myosin regulatory light chain (RLC) compared with healthy non-transgenic (NTg) littermates. Increased interest in HCQ came with the COVID-19 pandemic, but the risk of cardiotoxic side effects of HCQ raised concerns, especially in patients with an underlying heart condition, e.g., cardiomyopathy. Effects of HCQ treatment vs. placebo (H2O), administered in Tg-D94A vs. NTg mice over one month, were studied by echocardiography and muscle contractile mechanics. Global longitudinal strain analysis showed the HCQ-mediated improvement in heart performance in DCM mice. At the molecular level, HCQ promoted the switch from myosin’s super-relaxed (SRX) to disordered relaxed (DRX) state in DCM-D94A hearts. This result indicated more myosin cross-bridges exiting a hypocontractile SRX-OFF state and assuming the DRX-ON state, thus potentially enhancing myosin motor function in DCM mice. This bottom-up investigation of the pharmacological use of HCQ at the level of myosin molecules, muscle fibers, and whole hearts provides novel insights into mechanisms by which HCQ therapy mitigates some abnormal phenotypes in DCM-D94A mice and causes no harm in healthy NTg hearts.
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影响因子:
64.8
作者:
Li W;Moore MJ;Vasilieva N;Sui J;Wong SK;Berne MA;Somasundaran M;Sullivan JL;Luzuriaga K;Greenough TC;Choe H;Farzan M
通讯作者:
Farzan M
影响因子:
3.4
作者:
Garfinkel AC;Seidman JG;Seidman CE
通讯作者:
Seidman CE
影响因子:
20.1
作者:
McNally EM;Mestroni L
通讯作者:
Mestroni L
影响因子:
1.5
作者:
Hara, Y;Hamada, M;Shigematsu, Y
通讯作者:
Shigematsu, Y
DOI:
10.4049/jimmunol.1400571
发表时间:
2014-10-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Le NT;Takei Y;Izawa-Ishizawa Y;Heo KS;Lee H;Smrcka AV;Miller BL;Ko KA;Ture S;Morrell C;Fujiwara K;Akaike M;Abe J
通讯作者:
Abe J