Abstract:
:We tested the hypothesis that adrenomedullin (ADM), a recently isolated hypotensive peptide, is an autocrine transmitter in renal arterial smooth muscle cells (RASMCs). Fura-2 fluorometry revealed that ADM decreases both the cytosolic Ca2+ concentration ([Ca2+]i) and tension induced by 0.3 microM phenylephrine (PE) in porcine RASMCs. The expression of ADM mRNA in RASMCs was assessed by the reverse transcription polymerase chain reaction (RT-PCR), using the total RNA from the RASMCs and the specific primers for the porcine ADM mRNA. A band with an expected size could be detected only when the reverse transcriptase was added, thus indicating that the porcine RASMCs express ADM mRNA. These results therefore suggested that ADM plays an important role in the regulation of the renal vascular tone, not only as a circulating hormone, but also as an autocrine transmitter.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Seguchi H,Nishimura J,Kobayashi S,Kumazawa J,Kanaide Hdoi
10.1006/bbrc.1995.2509subject
Has Abstractpub_date
1995-10-13 00:00:00pages
619-25issue
2eissn
0006-291Xissn
1090-2104pii
S0006-291X(85)72509-0journal_volume
215pub_type
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journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
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