ISSN:
1432-0428
Keywords:
Glucagon
;
salivary gland
;
acid saline extract
;
125I-glucagon-degrading activity
;
affinity chromatography
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Summary The antibody-binding ability of the glucagon-like substance in rat submaxillary gland acid saline extract was examined by affinity chromatography, and the biological activity studied using the isolated liver perfusion method. We found that the glucagon-like substances in acid saline extract could not be bound to anti-glucagon antibody and that the gel-filtration peak on ultrogel AcA 54 could increase neither glucose nor cyclic AMP output from isolated perfused rat liver. Furthermore, the radioactivity peak of 125I-glucagon on Bio Gel P-6 column chromatography moved from its original position and eluted in later fractions after incubation with an acid saline extract of the submaxillary gland. In consequence, there was 125I-glucagon degrading activity in the submaxillary gland, but no glucagon-related peptide. Therefore, it is suggested that the glucagon-like substance, which has been reported in acid saline extract of the rat salivary gland, may be an artifact due to tracer degrading activity.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00304856
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