Abstract:The effect of a purified PHA-B fraction of Agaricus bisporus lectin on insulin release and 45Ca2+ uptake by islets of Langerhans was studied. It was found that at 2 mM glucose +17.5 micrograms/ml A. bisporus PHA-B (which produces half-maximal stimulation) there was a 3.3 fold increase in insulin secretion as compared to controls (2 mM glucose). Stimulation of insulin release was found to be dose-related as well as time-dependent. Maximal stimulation of insulin release was obtained at a lectin concentration of … Show more
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