Reduced activin receptor-like kinase 1 activity promotes cardiac fibrosis in heart failure.-猫眼课题宝

DOI：

10.1016/j.carpath.2017.07.004

发表时间：

2017-11

期刊：

Cardiovascular pathology : the official journal of the Society for Cardiovascular Pathology

影响因子：

通讯作者：

中科院分区：

其他

文献类型：

作者：

Morine KJ;Qiao X;Paruchuri V;Aronovitz MJ;Mackey EE;Buiten L;Levine J;Ughreja K;Nepali P;Blanton RM;Oh SP;Karas RH;Kapur NK

来源链接：

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5863230/

Activin receptor-like kinase 1 (ALK1) mediates signaling via the transforming growth factor beta-1 (TGFβ1), a pro-fibrogenic cytokine. No studies have defined a role for ALK1 in heart failure. We tested the hypothesis that reduced ALK1 expression promotes maladaptive cardiac remodeling in heart failure. In patients with advanced heart failure referred for left ventricular (LV) assist device implantation, LV Alk1 mRNA and protein levels were lower than control LV obtained from patients without heart failure. To investigate the role of ALK1 in heart failure, Alk1 haploinsufficient (Alk1+/−) and wild-type (WT) mice were studied 2 weeks after severe transverse aortic constriction (TAC). LV and lung weights were higher in Alk1+/− mice after TAC. Cardiomyocyte area and LV mRNA levels of brain natriuretic peptide and β-myosin heavy chain were increased similarly in Alk1+/− and WT mice after TAC. Alk-1 mice exhibited reduced Smad 1 phosphorylation and signaling compared to WT mice after TAC. Compared to WT, LV fibrosis and Type 1 Collagen mRNA and protein levels were higher in Alk1+/− mice. LV fractional shortening was lower in Alk1+/− mice after TAC Reduced expression of ALK1 promotes cardiac fibrosis and impaired LV function in a murine model of heart failure. Further studies examining the role of ALK1 and ALK1 inhibitors on cardiac remodeling are required.