Antihyperglycemic Effect of Methanol Extract of Syzygium polyanthum (Wight.) Leaf in Streptozotocin-Induced Diabetic Rats

Syzygium polyanthum (S. polyanthum), a plant belonging to Myrtaceae, is widely used in Indonesian and Malaysian cuisines. Diabetic patients in Indonesia also commonly use it as a traditional medicine. Hence, this study was conducted to investigate the antihyperglycemic effect of the methanol extr...

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Main Authors: Widyawati, Tri, Yusoff, Nor Adlin, Asmawi, Mohd Zaini, Ahmad, Mariam
Format: Article
Language:English
Published: MDPI 2015
Subjects:
Online Access:http://eprints.usm.my/38331/1/Antihyperglycemic_Effect_of_Methanol_Extract_of_Syzygium_polyanthum.pdf
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author Widyawati, Tri
Yusoff, Nor Adlin
Asmawi, Mohd Zaini
Ahmad, Mariam
author_facet Widyawati, Tri
Yusoff, Nor Adlin
Asmawi, Mohd Zaini
Ahmad, Mariam
author_sort Widyawati, Tri
collection USM
description Syzygium polyanthum (S. polyanthum), a plant belonging to Myrtaceae, is widely used in Indonesian and Malaysian cuisines. Diabetic patients in Indonesia also commonly use it as a traditional medicine. Hence, this study was conducted to investigate the antihyperglycemic effect of the methanol extract (ME) of S. polyanthum leaf and its possible mechanisms of action. To test for hypoglycemic activity, ME was administered orally to normal male Sprague Dawley rats after a 12-h fast. To further test for antihyperglycemic activity, the same treatment was administered to glucose-loaded (intraperitoneal glucose tolerance test, IPGTT) and streptozotocin (STZ)-induced diabetic rats, respectively. Hypoglycemic test in normal rats did not show significant reduction in blood glucose levels (BGLs) by the extract. Furthermore, IPGTT conducted on glucose-loaded normal rats also did not show significant reduction of BGLs. However, repeated administration of metformin and three doses of ME (250, 500 and 1000 mg/kg) for six days caused significant reduction of fasting BGLs in STZ-induced diabetic rats. The possible mechanisms of action of S. polyanthum antihyperglycemic activity were assessed by measurement of intestinal glucose absorption and glucose uptake by isolated rat abdominal muscle.
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spelling usm.eprints-383312018-01-10T08:06:43Z http://eprints.usm.my/38331/ Antihyperglycemic Effect of Methanol Extract of Syzygium polyanthum (Wight.) Leaf in Streptozotocin-Induced Diabetic Rats Widyawati, Tri Yusoff, Nor Adlin Asmawi, Mohd Zaini Ahmad, Mariam RK1-715 Dentistry RS1-441 Pharmacy and materia medica Syzygium polyanthum (S. polyanthum), a plant belonging to Myrtaceae, is widely used in Indonesian and Malaysian cuisines. Diabetic patients in Indonesia also commonly use it as a traditional medicine. Hence, this study was conducted to investigate the antihyperglycemic effect of the methanol extract (ME) of S. polyanthum leaf and its possible mechanisms of action. To test for hypoglycemic activity, ME was administered orally to normal male Sprague Dawley rats after a 12-h fast. To further test for antihyperglycemic activity, the same treatment was administered to glucose-loaded (intraperitoneal glucose tolerance test, IPGTT) and streptozotocin (STZ)-induced diabetic rats, respectively. Hypoglycemic test in normal rats did not show significant reduction in blood glucose levels (BGLs) by the extract. Furthermore, IPGTT conducted on glucose-loaded normal rats also did not show significant reduction of BGLs. However, repeated administration of metformin and three doses of ME (250, 500 and 1000 mg/kg) for six days caused significant reduction of fasting BGLs in STZ-induced diabetic rats. The possible mechanisms of action of S. polyanthum antihyperglycemic activity were assessed by measurement of intestinal glucose absorption and glucose uptake by isolated rat abdominal muscle. MDPI 2015 Article PeerReviewed application/pdf en http://eprints.usm.my/38331/1/Antihyperglycemic_Effect_of_Methanol_Extract_of_Syzygium_polyanthum.pdf Widyawati, Tri and Yusoff, Nor Adlin and Asmawi, Mohd Zaini and Ahmad, Mariam (2015) Antihyperglycemic Effect of Methanol Extract of Syzygium polyanthum (Wight.) Leaf in Streptozotocin-Induced Diabetic Rats. Nutrients, 7 (9). pp. 7764-7780. ISSN 2072-6643 https://www.ncbi.nlm.nih.gov/pubmed/26389944
spellingShingle RK1-715 Dentistry
RS1-441 Pharmacy and materia medica
Widyawati, Tri
Yusoff, Nor Adlin
Asmawi, Mohd Zaini
Ahmad, Mariam
Antihyperglycemic Effect of Methanol Extract of Syzygium polyanthum (Wight.) Leaf in Streptozotocin-Induced Diabetic Rats
title Antihyperglycemic Effect of Methanol Extract of Syzygium polyanthum (Wight.) Leaf in Streptozotocin-Induced Diabetic Rats
title_full Antihyperglycemic Effect of Methanol Extract of Syzygium polyanthum (Wight.) Leaf in Streptozotocin-Induced Diabetic Rats
title_fullStr Antihyperglycemic Effect of Methanol Extract of Syzygium polyanthum (Wight.) Leaf in Streptozotocin-Induced Diabetic Rats
title_full_unstemmed Antihyperglycemic Effect of Methanol Extract of Syzygium polyanthum (Wight.) Leaf in Streptozotocin-Induced Diabetic Rats
title_short Antihyperglycemic Effect of Methanol Extract of Syzygium polyanthum (Wight.) Leaf in Streptozotocin-Induced Diabetic Rats
title_sort antihyperglycemic effect of methanol extract of syzygium polyanthum wight leaf in streptozotocin induced diabetic rats
topic RK1-715 Dentistry
RS1-441 Pharmacy and materia medica
url http://eprints.usm.my/38331/1/Antihyperglycemic_Effect_of_Methanol_Extract_of_Syzygium_polyanthum.pdf
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