| Literature DB >> 15178348 |
Taisuke Jo1, Taiji Nagata, Haruko Iida, Hiroyuki Imuta, Kuniaki Iwasawa, Ji Ma, Kei Hara, Masao Omata, Ryozo Nagai, Hajime Takizawa, Takahide Nagase, Toshiaki Nakajima.
Abstract
Voltage-gated Na(+) channel (I(Na)) is expressed under culture conditions in human smooth muscle cells (hSMCs) such as coronary myocytes. The aim of this study is to clarify the physiological, pharmacological and molecular characteristics of I(Na) expressed in cultured hSMCs obtained from bronchus, main pulmonary and coronary artery. I(Na), was recorded in these hSMCs and inhibited by tetrodotoxin (TTX) with an IC(50) value of approximately 10 nM. Reverse transcriptase/polymerase chain reaction (RT-PCR) analysis of mRNA showed the prominent expression of transcripts for SCN9A, which was consistent with the results of real-time quantitative RT-PCR. These results provide novel evidence that TTX-sensitive Na(+) channel expressed in cultured hSMCs is mainly composed of Na(v)1.7.Entities:
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Year: 2004 PMID： 15178348 DOI： 10.1016/j.febslet.2004.04.092
Source DB: PubMed Journal: FEBS Lett ISSN： 0014-5793 Impact factor: 4.124