Abstract:
:Neuromedin K and neuromedin L are novel mammalian tachykinins isolated from porcine spinal cord. We have developed a highly sensitive radioimmunoassay for neuromedin K. Since the radioimmunoassay for neuromedin K has significant crossreactivity with neuromedin L and substance P, we can simultaneously determine the tissue concentrations of neuromedin K, neuromedin L and substance P after separation of the tissue extracts by reverse phase high performance liquid chromatography. Substance P is found to be the most abundant mammalian tachykinin in every brain region. The ratio of the concentration of substance P to neuromedin K is small in cerebral cortex and large in medulla-pons, while that of substance P to neuromedin L is rather constant in a range of 2.0-2.5. In spinal cord, dorsal half contains more neuromedin K and L than ventral half as is the case with substance P. These results indicate that both neuromedin K and L are endogenous mammalian tachykinins with specific physiological functions.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Minamino N,Masuda H,Kangawa K,Matsuo Hdoi
10.1016/0006-291x(84)91019-2subject
Has Abstractpub_date
1984-11-14 00:00:00pages
731-8issue
3eissn
0006-291Xissn
1090-2104pii
0006-291X(84)91019-2journal_volume
124pub_type
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