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A Novel Extract of Gymnema sylvestre Improves Glucose Tolerance In Vivo and Stimulates Insulin Secretion and Synthesis In Vitro
Phytotherapy research, 2013-07, Vol.27 (7), p.1006-1011
Al-Romaiyan, A.
King, A. J.
Persaud, S. J.
Jones, P. M.
2013
Details
Autor(en) / Beteiligte
Al-Romaiyan, A.
King, A. J.
Persaud, S. J.
Jones, P. M.
Titel
A Novel Extract of Gymnema sylvestre Improves Glucose Tolerance In Vivo and Stimulates Insulin Secretion and Synthesis In Vitro
Ist Teil von
Phytotherapy research, 2013-07, Vol.27 (7), p.1006-1011
Ort / Verlag
England: Blackwell Publishing Ltd
Erscheinungsjahr
2013
Link zum Volltext
Quelle
Wiley Online Library Journals Frontfile Complete
Beschreibungen/Notizen
Herbal medicines, especially plant‐derived extracts, have been used to treat Type 2 diabetes mellitus (T2DM) for many centuries, and offer the potential of cheap and readily available alternatives to conventional pharmaceuticals in developing countries. Extracts of Gymnema sylvestre (GS) have anti‐diabetic activities and have been used as a folk medicine in India for centuries. We have investigated the effects of a novel high molecular weight GS extract termed OSA® on glucose tolerance in insulin‐resistant ob/ob mice, and on insulin secretion and synthesis by isolated mouse islets. Single administration of OSA® (500 mg/kg) to ob/ob mice 30 min before an intraperitoneal glucose load improved their abnormal glucose tolerance. In vitro studies indicated that OSA® (0.25 mg/ml) initiated rapid and reversible increases in insulin secretion from isolated mouse islets at substimulatory (2 mM) and stimulatory (20 mM) glucose concentrations. In addition, prolonged treatment (24–48 h) of mouse islets with OSA® elevated the expression of preproinsulin mRNA and maintained the total insulin content of mouse islets in the presence of stimulated insulin secretion. These effects of OSA® are consistent with its potential use as a therapy for the hyperglycemia associated with obesity‐related T2DM. Copyright © 2012 John Wiley & Sons, Ltd.
Sprache
Englisch
Identifikatoren
ISSN: 0951-418X
eISSN: 1099-1573
DOI: 10.1002/ptr.4815
Titel-ID: cdi_proquest_miscellaneous_1399055643
Format
–
Schlagworte
Animals
,
Blood Glucose - metabolism
,
Diabetes Mellitus, Type 2 - drug therapy
,
Diabetes Mellitus, Type 2 - metabolism
,
Female
,
Glucose Intolerance - drug therapy
,
glucose tolerance
,
Gymnema sylvestre - chemistry
,
Gymnema sylvestre extract
,
Hypoglycemic Agents - therapeutic use
,
Insulin - biosynthesis
,
Insulin - genetics
,
Insulin - metabolism
,
Insulin Resistance
,
insulin secretion
,
insulin synthesis
,
Islets of Langerhans - drug effects
,
Islets of Langerhans - metabolism
,
Male
,
Mice
,
Mice, Inbred C57BL
,
Mice, Obese
,
mouse islets of Langerhans
,
ob/ob mouse
,
Obesity - metabolism
,
Phytotherapy
,
Plant Extracts - therapeutic use
,
Protein Precursors - genetics
,
Protein Precursors - metabolism
,
RNA, Messenger - metabolism
,
Type 2 diabetes mellitus
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