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Abstract Title:

The effect of artificial sweetener on insulin secretion. II. Stimulation of insulin release from isolated rat islets by Acesulfame K (in vitro experiments).

Abstract Source:

Horm Metab Res. 1987 Jul;19(7):285-9. PMID: 2887503

Abstract Author(s):

Y Liang, V Maier, G Steinbach, L Lalić, E F Pfeiffer

Abstract:

The effect of the artificial sweetener Acesulfame K on insulin release in vitro was investigated. Pancreatic islets were obtained from Male Wistar rats. Acesulfame K produced a significant increase in insulin release from incubated islets. This effect was dose- and glucose-dependent. When islets were incubated with different amounts of Acesulfame K (2.5, 7.5 and 15 mM) and 15 mM glucose in the media for one hour, insulin concentrations were 140.2 +/- 21.1, 246.7 +/- 32.4 and 313.9 +/- 37.7 microU/ml, respectively. When 15 mM Acesulfame K was added to a media containing 0, 2.5, 5, 10 and 15 mM glucose, insulin release from incubated islets after 60 min were 25.6 +/- 6.4, 65.4 +/- 12.1, 109.0 +/- 10.0, 229.6 +/- 28.0 and 313.9 +/- 37.7 microU/ml. Incubating islets in the media containing arginine or acetylcholine increased insulin release significantly. However, when Acesulfame K was added to the media containing either arginine or acetylcholine, no further potentiating effect could be detected. The effect of Acesulfame K on insulin secretion was decreased by noradrenaline. However, the addition of naloxone, atropine and propranolol had no significant effect. Somatostatin inhibited insulin release from isolated pancreatic islets, but did not antagonize the action of Acesulfame K. When 2.5 mM Acesulfame K was added to a medium containing somatostatin, the inhibitory effect of somatostatin was totally neutralized. In a perifusion system, Acesulfame K stimulated both phases of insulin secretion. In conclusion, Acesulfame K acts directly on the pancreatic islets and potentiates glucose-induced insulin release.

Study Type : Animal Study
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Depression: 21st Century Solutions + The Dark Side of Wheat

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