| First Author | Li M | Year | 2017 |
| Journal | Sci Rep | Volume | 7 |
| Issue | 1 | Pages | 9826 |
| PubMed ID | 28852106 | Mgi Jnum | J:256343 |
| Mgi Id | MGI:6108816 | Doi | 10.1038/s41598-017-10377-z |
| Citation | Li M, et al. (2017) The Role of Na+/Ca2+ Exchanger 1 in Maintaining Ductus Arteriosus Patency. Sci Rep 7(1):9826 |
| abstractText | Patency of the ductus arteriosus (DA) is crucial for both fetal circulation and patients with DA-dependent congenital heart diseases (CHD). The Na(+)/Ca(2+) exchanger 1 (NCX1) protein has been shown to play a key role in the regulation of vascular tone and is elevated in DA-dependent CHD. This current study was conducted to investigate the mechanisms underpinning the role of NCX1 in DA patency. Our data showed NCX1 expression was up-regulated in the DA of fetal mice. Up-regulation of NCX1 expression resulted in a concomitant decrease in cytosolic Ca(2+) levels in human DA smooth muscle cells (DASMCs) and an inhibition of the proliferation and migration capacities of human DASMCs. Furthermore, treatment of DASMCs with KB-R7943, which can reduce Ca(2+) influx, resulted in the inhibition of both cell proliferation and migration. These findings indicate that NCX1 may play a role in maintaining patent DA not only by preventing DA functional closure through reducing cytosolic Ca(2+) level in DASMC but also by delaying the anatomical closure process. The latter delay is facilitated by the down-regulation of human DASMC proliferation and migration. It is also likely that a reduction in cytosolic Ca(2+) levels inhibits the proliferation and migration capacities of human DASMCs in vitro. |
