Immunochemical evidence for a gastrin-like peptide in the intestinal tissues of the earthworm Lumbricus terrestris期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Immunochemical evidence for a gastrin-like peptide in the intestinal tissues of the earthworm Lumbricus terrestris

Affiliation:	1. Division of Fluid Dynamics/Division of Energy Technology, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden;2. Division of Fluid Dynamics, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden;3. Haldor Topsøe A/S, Nymøllevej 55, DK-2800 Kgs. Lyngby, Denmark

Abstract:	1.1. The presence of gastrin-like immunoreactive materials in intestinal tissues of the earthworm Lumbricus terrestris has been demonstrated by means of radioimmunoassay technique. 2.2. The greatest activity coincides with the areas of the intestines with high digestive enzyme activities. No gastrin-like activities were detected in nerve tissues. 3.3. The results also indicate that earthworm gut tissues may contain different forms of gastrin or gastrin-like peptides. 4.4. The absence of gastrin-like activity in earthworm nerve tissues may have significant phylogenetic implication for the proposed gastrin-cholecystokinin origin in neuronal elements of invertebrates.

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