Abstract:
:Using a synthetic 21-residue endothelin as antigen, we have produced an antiserum for endothelin and developed a specific and sensitive radioimmunoassay (RIA) for endothelin. The minimum detection limit of the RIA was 1 pg/tube. Immunoreactive (ir-) endothelin was extracted from the culture medium by Bondelute C8 column. The ir-endothelin in the culture medium of endothelial cells (EC) from bovine pulmonary artery and carotid artery was 1.48 ng/ml and 3.31 ng/ml, respectively. Reverse-phase high performance liquid chromatography coupled with the RIA revealed that ir-endothelin in the culture medium comprised one major component corresponding to synthetic endothelin. In addition, the cultured EC of bovine pulmonary artery were specifically stained by immunohistochemical technique. These results suggest that endothelin could be produced in the EC of the pulmonary and carotid arteries besides the aorta. The RIA presented in this study could be an useful tool to investigate the pathophysiologic significance of endothelin.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Naruse M,Naruse K,Kurimoto F,Horiuchi J,Tsuchiya K,Kawana M,Kato Y,Zeng ZP,Sakurai H,Demura Hdoi
10.1016/0006-291x(89)92484-4subject
Has Abstract,Author List Incompletepub_date
1989-04-28 00:00:00pages
662-8issue
2eissn
0006-291Xissn
1090-2104pii
0006-291X(89)92484-4journal_volume
160pub_type
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