| Literature DB >> 6293511 |
J B Polson, J J Krzanowski, A Szentivanyi.
Abstract
The cyclic nucleotide phosphodiesterase (PDE) activity of canine tracheal smooth muscle (CTS,) was examined. Column chromatography of soluble CTSM-PDE revealed five peaks of activity. One of these peaks (V) was examined further in this study and showed a high affinity for adenosine 3',5'-cyclic monophosphate (Km = 0.63 microM). Seven pharmacological PDE inhibitors were tested for their abilities to inhibit the peak V enzyme and also for their abilities to cause mechanical relaxation of CTSM strips in isolated tissue baths. A strong correlation (P greater than 0.001) between peak V PDE inhibition (-log Ki) and airway muscle relaxation (-log ED50) was found.Entities:
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Year: 1982 PMID: 6293511 DOI: 10.1016/0006-2952(82)90618-9
Source DB: PubMed Journal: Biochem Pharmacol ISSN: 0006-2952 Impact factor: 5.858