Antioxidant Evaluation of Eysenhardtia Species (Fabaceae)
The antioxidant activities of plant extracts from Eysenhardtia platycarpa, E. punctata, and E. subcoriacea (Fabaceae) species, used in Mexican traditional medicine for the treatment of diabetes complications, were analyzed in a rat pancreas homogenate model. Methanolic extracts of E. platycarpa, E....
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| Veröffentlicht in: | Biological & pharmaceutical bulletin 2007-08, Vol.30 (8), p.1503 |
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| description | The antioxidant activities of plant extracts from Eysenhardtia platycarpa, E. punctata, and E. subcoriacea (Fabaceae) species, used in Mexican traditional medicine for the treatment of diabetes complications, were analyzed in a rat pancreas homogenate model. Methanolic extracts of E. platycarpa, E. punctata, and E. subcoriacea protected the pancreatic homogenate from 2,2-azo-bis(2-amidinopropane)dihydrochloride (AAPH)-induced damage. The inhibitory effect was dose-dependent at concentrations of 10--1000 ppm and correlated with 1,1 diphenyl-2-picrylhydrazyl (DDPH) radical scavenger capacity. 3-O-Acetyl-11α,12α-epoxy-oleanan-28,13β-olide (1, EC50=21.2±2.2 μM), (+)-catechin (2, EC50=7.4±1.1 μM), and (+)-catechin 3-O-β-D-galactopyranoside (3, EC50=11.5±1.5 μM), natural constituents isolated from the branches of E. platycarpa, displayed significant antioxidant activity. Compounds 1 and 2 significantly increased (p |
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Methanolic extracts of E. platycarpa, E. punctata, and E. subcoriacea protected the pancreatic homogenate from 2,2-azo-bis(2-amidinopropane)dihydrochloride (AAPH)-induced damage. The inhibitory effect was dose-dependent at concentrations of 10--1000 ppm and correlated with 1,1 diphenyl-2-picrylhydrazyl (DDPH) radical scavenger capacity. 3-O-Acetyl-11α,12α-epoxy-oleanan-28,13β-olide (1, EC50=21.2±2.2 μM), (+)-catechin (2, EC50=7.4±1.1 μM), and (+)-catechin 3-O-β-D-galactopyranoside (3, EC50=11.5±1.5 μM), natural constituents isolated from the branches of E. platycarpa, displayed significant antioxidant activity. Compounds 1 and 2 significantly increased (p<0.001) the pancreatic glutathione (GSH) concentration alone and in combination with AAPH treatment. Compound 1 was obtained from oleanolic acid by relay synthesis via acetylation, bromo-lactonization, dehydrobromination, and oxidation, and its antioxidant effect was evaluated on streptozotocin (STZ)-induced diabetic rats. On its own, 1 at a dose of 100 mg/kg b. wt. (i.p.) for 5 d significantly increased the activities of glutathione peroxidase (GSHPx) and catalase (CAT). Simultaneous treatment of 1 (100 mg/kg b. wt.) and STZ significantly reduced the pancreatic thiobarbituric acid reactive substances (TBARS) concentration together with a significant increase in the activities of GSHPx and CAT, preventing hyperglycemia induced by STZ after 5 d of treatment. The present study demonstrates the antioxidant and antihyperglycemic activities of compound 1 isolated from Eysenhardtia species used in traditional medicine.</description><identifier>ISSN: 0918-6158</identifier><identifier>EISSN: 1347-5215</identifier><language>eng</language><publisher>Tokyo: Japan Science and Technology Agency</publisher><ispartof>Biological & pharmaceutical bulletin, 2007-08, Vol.30 (8), p.1503</ispartof><rights>Copyright Japan Science and Technology Agency 2007</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784</link.rule.ids></links><search><creatorcontrib>Manuel Narváez-Mastache, José</creatorcontrib><creatorcontrib>Soto, Claudia</creatorcontrib><creatorcontrib>Delgado, Guillermo</creatorcontrib><title>Antioxidant Evaluation of Eysenhardtia Species (Fabaceae)</title><title>Biological & pharmaceutical bulletin</title><description>The antioxidant activities of plant extracts from Eysenhardtia platycarpa, E. punctata, and E. subcoriacea (Fabaceae) species, used in Mexican traditional medicine for the treatment of diabetes complications, were analyzed in a rat pancreas homogenate model. Methanolic extracts of E. platycarpa, E. punctata, and E. subcoriacea protected the pancreatic homogenate from 2,2-azo-bis(2-amidinopropane)dihydrochloride (AAPH)-induced damage. The inhibitory effect was dose-dependent at concentrations of 10--1000 ppm and correlated with 1,1 diphenyl-2-picrylhydrazyl (DDPH) radical scavenger capacity. 3-O-Acetyl-11α,12α-epoxy-oleanan-28,13β-olide (1, EC50=21.2±2.2 μM), (+)-catechin (2, EC50=7.4±1.1 μM), and (+)-catechin 3-O-β-D-galactopyranoside (3, EC50=11.5±1.5 μM), natural constituents isolated from the branches of E. platycarpa, displayed significant antioxidant activity. Compounds 1 and 2 significantly increased (p<0.001) the pancreatic glutathione (GSH) concentration alone and in combination with AAPH treatment. Compound 1 was obtained from oleanolic acid by relay synthesis via acetylation, bromo-lactonization, dehydrobromination, and oxidation, and its antioxidant effect was evaluated on streptozotocin (STZ)-induced diabetic rats. On its own, 1 at a dose of 100 mg/kg b. wt. (i.p.) for 5 d significantly increased the activities of glutathione peroxidase (GSHPx) and catalase (CAT). Simultaneous treatment of 1 (100 mg/kg b. wt.) and STZ significantly reduced the pancreatic thiobarbituric acid reactive substances (TBARS) concentration together with a significant increase in the activities of GSHPx and CAT, preventing hyperglycemia induced by STZ after 5 d of treatment. The present study demonstrates the antioxidant and antihyperglycemic activities of compound 1 isolated from Eysenhardtia species used in traditional medicine.</description><issn>0918-6158</issn><issn>1347-5215</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><recordid>eNqNiksKwjAUAIMoWD93CLjRRSFp0t9SpMW93Zdn-4opJalJKnp7u_AAroZhZkECLmQaxhGPlyRgOc_ChMfZmmyc6xljKYtEQPKz9sq8VQva0-IFwwSza2o6Wnwc6gfY1iugtxEbhY4eS7hDg4CnHVl1MDjc_7glh7KoLtdwtOY5ofN1byar51RzKXORCClT8d_1BVH1N1w</recordid><startdate>20070801</startdate><enddate>20070801</enddate><creator>Manuel Narváez-Mastache, José</creator><creator>Soto, Claudia</creator><creator>Delgado, Guillermo</creator><general>Japan Science and Technology Agency</general><scope>7QP</scope><scope>7QR</scope><scope>7TK</scope><scope>7U9</scope><scope>8FD</scope><scope>FR3</scope><scope>H94</scope><scope>P64</scope></search><sort><creationdate>20070801</creationdate><title>Antioxidant Evaluation of Eysenhardtia Species (Fabaceae)</title><author>Manuel Narváez-Mastache, José ; Soto, Claudia ; Delgado, Guillermo</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-proquest_journals_14493634473</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Manuel Narváez-Mastache, José</creatorcontrib><creatorcontrib>Soto, Claudia</creatorcontrib><creatorcontrib>Delgado, Guillermo</creatorcontrib><collection>Calcium & Calcified Tissue Abstracts</collection><collection>Chemoreception Abstracts</collection><collection>Neurosciences Abstracts</collection><collection>Virology and AIDS Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>AIDS and Cancer Research Abstracts</collection><collection>Biotechnology and BioEngineering Abstracts</collection><jtitle>Biological & pharmaceutical bulletin</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Manuel Narváez-Mastache, José</au><au>Soto, Claudia</au><au>Delgado, Guillermo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Antioxidant Evaluation of Eysenhardtia Species (Fabaceae)</atitle><jtitle>Biological & pharmaceutical bulletin</jtitle><date>2007-08-01</date><risdate>2007</risdate><volume>30</volume><issue>8</issue><spage>1503</spage><pages>1503-</pages><issn>0918-6158</issn><eissn>1347-5215</eissn><abstract>The antioxidant activities of plant extracts from Eysenhardtia platycarpa, E. punctata, and E. subcoriacea (Fabaceae) species, used in Mexican traditional medicine for the treatment of diabetes complications, were analyzed in a rat pancreas homogenate model. Methanolic extracts of E. platycarpa, E. punctata, and E. subcoriacea protected the pancreatic homogenate from 2,2-azo-bis(2-amidinopropane)dihydrochloride (AAPH)-induced damage. The inhibitory effect was dose-dependent at concentrations of 10--1000 ppm and correlated with 1,1 diphenyl-2-picrylhydrazyl (DDPH) radical scavenger capacity. 3-O-Acetyl-11α,12α-epoxy-oleanan-28,13β-olide (1, EC50=21.2±2.2 μM), (+)-catechin (2, EC50=7.4±1.1 μM), and (+)-catechin 3-O-β-D-galactopyranoside (3, EC50=11.5±1.5 μM), natural constituents isolated from the branches of E. platycarpa, displayed significant antioxidant activity. Compounds 1 and 2 significantly increased (p<0.001) the pancreatic glutathione (GSH) concentration alone and in combination with AAPH treatment. Compound 1 was obtained from oleanolic acid by relay synthesis via acetylation, bromo-lactonization, dehydrobromination, and oxidation, and its antioxidant effect was evaluated on streptozotocin (STZ)-induced diabetic rats. On its own, 1 at a dose of 100 mg/kg b. wt. (i.p.) for 5 d significantly increased the activities of glutathione peroxidase (GSHPx) and catalase (CAT). Simultaneous treatment of 1 (100 mg/kg b. wt.) and STZ significantly reduced the pancreatic thiobarbituric acid reactive substances (TBARS) concentration together with a significant increase in the activities of GSHPx and CAT, preventing hyperglycemia induced by STZ after 5 d of treatment. The present study demonstrates the antioxidant and antihyperglycemic activities of compound 1 isolated from Eysenhardtia species used in traditional medicine.</abstract><cop>Tokyo</cop><pub>Japan Science and Technology Agency</pub></addata></record> |
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| title | Antioxidant Evaluation of Eysenhardtia Species (Fabaceae) |
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