Title : The preparation of bioactive 125I-gastrin, using Iodo-gen as oxidizing agent, and the use of this tracer in receptor studies.

Pub. Date : 1985 Jun

PMID : 2992067






4 Functional Relationships(s)
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1 The preparation of 125I-labelled gastrin 1-17, using Iodo-gen as oxidizing agent, is described. 1,3,4,6-tetrachloro-3 alpha,6 alpha-diphenylglycoluril gastrin Rattus norvegicus
2 The Iodo-gen-labelled 125I-gastrin tracer showed a slightly higher immunoreactivity than a similarly purified tracer produced by a gentle chloramine-T method (50% binding of 0.45 fmol tracer at an antibody dilution of 945,000 versus 780,000, respectively). 1,3,4,6-tetrachloro-3 alpha,6 alpha-diphenylglycoluril gastrin Rattus norvegicus
3 The Iodo-gen-labelled 125I-gastrin, which had the same biological activity as native gastrin when tested in conscious gastric fistula rats, was tested for specific binding at 30 degrees C in pronase-isolated rat gastric fundic cells and plasma membranes from the same area. 1,3,4,6-tetrachloro-3 alpha,6 alpha-diphenylglycoluril gastrin Rattus norvegicus
4 This study shows that Iodo-gen is suitable as an oxidizing agent in iodination of gastrin without loss of biological activity. 1,3,4,6-tetrachloro-3 alpha,6 alpha-diphenylglycoluril gastrin Rattus norvegicus