Prevention of glucose-induced insulin secretion by lipoxygenase inhibitor
1982
Abstract Glucose-induced insulin secretion was investigated using isolated pancreatic islets of rats. The phospholipase A 2 inhibitors, p-bromophenacyl bromide (0.1 mM) and mepacrine (0.1 mM) inhibited glucose-induced insulin secretion. Indomethacin (5 μM), a cyclooxygenase inhibitor, failed to inhibit glucose-induced insulin secretion, while the lipoxygenase inhibitor nordihydroguaiaretic acid (0.1–0.2 mM) inhibited it. These results suggest that stimulation of phospholipase A 2 and a product(s) formed by the lipoxygenase pathway play an important role in the glucose-induced insulin secretion.
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