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Brain-derived neurotrophic factor ameliorates hepatic insulin resistance in Zucker fatty rats
Brain-derived neurotrophic factor (BDNF), a member of the neurotrophins, has been reported to ameliorate hyperglycemia in obese diabetic animal models. To elucidate the mechanism of BDNF on glucose metabolism, we determined the glucose turnover under basal and euglycemic hyperinsulinemic (insulin in...
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Published in: | Metabolism, clinical and experimental clinical and experimental, 2003-02, Vol.52 (2), p.203-208 |
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creator | Kuroda, Akio Yamasaki, Yoshimitsu Matsuhisa, Munehide Kubota, Minoru Nakahara, Itsuro Nakatani, Yoshihisa Hoshi, Ayumu Gorogawa, Shin-ichi Umayahara, Yutaka Itakura, Yasushi Nakagawa, Tsutomu Taiji, Mutsuo Kajimoto, Yoshitaka Hori, Masatsugu |
description | Brain-derived neurotrophic factor (BDNF), a member of the neurotrophins, has been reported to ameliorate hyperglycemia in obese diabetic animal models. To elucidate the mechanism of BDNF on glucose metabolism, we determined the glucose turnover under basal and euglycemic hyperinsulinemic (insulin infusion rate, 54 pmol · kg−1 · min−1) clamp conditions in obese insulin-resistant rats, male Zucker fatty rats, which had been acutely administered a subcutaneous injection of BDNF (20 mg/kg) (n = 9, BDNF) or vehicle (n = 8, vehicle). Under the basal condition, acute administration of BDNF did not affect the blood glucose level, plasma insulin level, rate of glucose disappearance (Rd), and endogenous glucose production (EGP). Under the clamp condition, the glucose infusion rate (GIR) was significantly higher in BDNF than in vehicle (mean ± SD, 61.4 ± 19.1 v 41.4 ± 4.9 μmol · kg−1 · min−1, P |
doi_str_mv | 10.1053/meta.2003.50026 |
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To elucidate the mechanism of BDNF on glucose metabolism, we determined the glucose turnover under basal and euglycemic hyperinsulinemic (insulin infusion rate, 54 pmol · kg−1 · min−1) clamp conditions in obese insulin-resistant rats, male Zucker fatty rats, which had been acutely administered a subcutaneous injection of BDNF (20 mg/kg) (n = 9, BDNF) or vehicle (n = 8, vehicle). Under the basal condition, acute administration of BDNF did not affect the blood glucose level, plasma insulin level, rate of glucose disappearance (Rd), and endogenous glucose production (EGP). Under the clamp condition, the glucose infusion rate (GIR) was significantly higher in BDNF than in vehicle (mean ± SD, 61.4 ± 19.1 v 41.4 ± 4.9 μmol · kg−1 · min−1, P <.05). There was no significant difference in Rd and EGP between the 2 groups under the clamp condition, but the insulin-mediated suppression ratio of endogenous glucose production in BDNF was significantly greater than in vehicle (48.9 ± 22.2 v 22.4% ± 20.6%, P <.05). In BDNF, mRNA expressions of hepatic phosphoenolpyruvate carboxykinase (PEPCK) and glucose-6-phosphatase (G6Pase) were comparable to those of vehicle, while hepatic glucokinase (GK) mRNA expression was significantly higher (1.57 ± 0.33 v 1.03 ± 0.17, P <.05). We conclude that BDNF mainly improves hepatic insulin resistance in obese insulin-resistant rats, probably by affecting the hepatic GK flux. Copyright 2003, Elsevier Science (USA). All rights reserved.</description><identifier>ISSN: 0026-0495</identifier><identifier>EISSN: 1532-8600</identifier><identifier>DOI: 10.1053/meta.2003.50026</identifier><identifier>PMID: 12601633</identifier><language>eng</language><publisher>New York, NY: Elsevier Inc</publisher><subject>Animals ; Associated diseases and complications ; Biological and medical sciences ; Blood Glucose - analysis ; Brain-Derived Neurotrophic Factor - pharmacology ; Carboxy-Lyases - genetics ; Diabetes. Impaired glucose tolerance ; Endocrine pancreas. Apud cells (diseases) ; Endocrinopathies ; Glucokinase - genetics ; Glucose-6-Phosphatase - genetics ; Glycogen - metabolism ; Insulin - blood ; Insulin Resistance ; Liver - drug effects ; Liver - physiopathology ; Male ; Medical sciences ; Metabolic diseases ; Obesity ; Obesity - physiopathology ; Rats ; Rats, Zucker ; RNA, Messenger - metabolism</subject><ispartof>Metabolism, clinical and experimental, 2003-02, Vol.52 (2), p.203-208</ispartof><rights>2003</rights><rights>2003 INIST-CNRS</rights><rights>Copyright 2003, Elsevier Science (USA). All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c371t-996478e08fc27925680b3eb6e9e11fee78417d6576a991fe134716a9ade17cec3</citedby><cites>FETCH-LOGICAL-c371t-996478e08fc27925680b3eb6e9e11fee78417d6576a991fe134716a9ade17cec3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=14621081$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/12601633$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Kuroda, Akio</creatorcontrib><creatorcontrib>Yamasaki, Yoshimitsu</creatorcontrib><creatorcontrib>Matsuhisa, Munehide</creatorcontrib><creatorcontrib>Kubota, Minoru</creatorcontrib><creatorcontrib>Nakahara, Itsuro</creatorcontrib><creatorcontrib>Nakatani, Yoshihisa</creatorcontrib><creatorcontrib>Hoshi, Ayumu</creatorcontrib><creatorcontrib>Gorogawa, Shin-ichi</creatorcontrib><creatorcontrib>Umayahara, Yutaka</creatorcontrib><creatorcontrib>Itakura, Yasushi</creatorcontrib><creatorcontrib>Nakagawa, Tsutomu</creatorcontrib><creatorcontrib>Taiji, Mutsuo</creatorcontrib><creatorcontrib>Kajimoto, Yoshitaka</creatorcontrib><creatorcontrib>Hori, Masatsugu</creatorcontrib><title>Brain-derived neurotrophic factor ameliorates hepatic insulin resistance in Zucker fatty rats</title><title>Metabolism, clinical and experimental</title><addtitle>Metabolism</addtitle><description>Brain-derived neurotrophic factor (BDNF), a member of the neurotrophins, has been reported to ameliorate hyperglycemia in obese diabetic animal models. To elucidate the mechanism of BDNF on glucose metabolism, we determined the glucose turnover under basal and euglycemic hyperinsulinemic (insulin infusion rate, 54 pmol · kg−1 · min−1) clamp conditions in obese insulin-resistant rats, male Zucker fatty rats, which had been acutely administered a subcutaneous injection of BDNF (20 mg/kg) (n = 9, BDNF) or vehicle (n = 8, vehicle). Under the basal condition, acute administration of BDNF did not affect the blood glucose level, plasma insulin level, rate of glucose disappearance (Rd), and endogenous glucose production (EGP). Under the clamp condition, the glucose infusion rate (GIR) was significantly higher in BDNF than in vehicle (mean ± SD, 61.4 ± 19.1 v 41.4 ± 4.9 μmol · kg−1 · min−1, P <.05). There was no significant difference in Rd and EGP between the 2 groups under the clamp condition, but the insulin-mediated suppression ratio of endogenous glucose production in BDNF was significantly greater than in vehicle (48.9 ± 22.2 v 22.4% ± 20.6%, P <.05). In BDNF, mRNA expressions of hepatic phosphoenolpyruvate carboxykinase (PEPCK) and glucose-6-phosphatase (G6Pase) were comparable to those of vehicle, while hepatic glucokinase (GK) mRNA expression was significantly higher (1.57 ± 0.33 v 1.03 ± 0.17, P <.05). We conclude that BDNF mainly improves hepatic insulin resistance in obese insulin-resistant rats, probably by affecting the hepatic GK flux. Copyright 2003, Elsevier Science (USA). All rights reserved.</description><subject>Animals</subject><subject>Associated diseases and complications</subject><subject>Biological and medical sciences</subject><subject>Blood Glucose - analysis</subject><subject>Brain-Derived Neurotrophic Factor - pharmacology</subject><subject>Carboxy-Lyases - genetics</subject><subject>Diabetes. Impaired glucose tolerance</subject><subject>Endocrine pancreas. Apud cells (diseases)</subject><subject>Endocrinopathies</subject><subject>Glucokinase - genetics</subject><subject>Glucose-6-Phosphatase - genetics</subject><subject>Glycogen - metabolism</subject><subject>Insulin - blood</subject><subject>Insulin Resistance</subject><subject>Liver - drug effects</subject><subject>Liver - physiopathology</subject><subject>Male</subject><subject>Medical sciences</subject><subject>Metabolic diseases</subject><subject>Obesity</subject><subject>Obesity - physiopathology</subject><subject>Rats</subject><subject>Rats, Zucker</subject><subject>RNA, Messenger - metabolism</subject><issn>0026-0495</issn><issn>1532-8600</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2003</creationdate><recordtype>article</recordtype><recordid>eNp1kD1PwzAQhi0EoqUws6EssKU9x4mdjFDxJVVigQUJWa5zUQ35KLZTqf8eh0ZiYrrT6-c9WQ8hlxTmFDK2aNCreQLA5hlAwo_IlGYsiXMOcEymQxRDWmQTcubcJwAIkfNTMqEJB8oZm5KPO6tMG5dozQ7LqMXedt52243RUaW072ykGqxNZ5VHF21wq3x4Mq3ra9NGFp1xXrUaQxS99_oLbeh5v49CwZ2Tk0rVDi_GOSNvD_evy6d49fL4vLxdxZoJ6uOi4KnIEfJKJ6JIMp7DmuGaY4GUVogiT6koeSa4KooQUJYKGnZVIhUaNZuRm8Pdre2-e3ReNsZprGvVYtc7KRikwEAEcHEAte2cs1jJrTWNsntJQQ5G5WBUDkblr9HQuBpP9-sGyz9-VBiA6xFQTqu6ssGGcX9cyhMKOQ1cceAwiNgZtNJpg8FcaSxqL8vO_PuJH7HykzI</recordid><startdate>20030201</startdate><enddate>20030201</enddate><creator>Kuroda, Akio</creator><creator>Yamasaki, Yoshimitsu</creator><creator>Matsuhisa, Munehide</creator><creator>Kubota, Minoru</creator><creator>Nakahara, Itsuro</creator><creator>Nakatani, Yoshihisa</creator><creator>Hoshi, Ayumu</creator><creator>Gorogawa, Shin-ichi</creator><creator>Umayahara, Yutaka</creator><creator>Itakura, Yasushi</creator><creator>Nakagawa, Tsutomu</creator><creator>Taiji, Mutsuo</creator><creator>Kajimoto, Yoshitaka</creator><creator>Hori, Masatsugu</creator><general>Elsevier Inc</general><general>Elsevier</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20030201</creationdate><title>Brain-derived neurotrophic factor ameliorates hepatic insulin resistance in Zucker fatty rats</title><author>Kuroda, Akio ; Yamasaki, Yoshimitsu ; Matsuhisa, Munehide ; Kubota, Minoru ; Nakahara, Itsuro ; Nakatani, Yoshihisa ; Hoshi, Ayumu ; Gorogawa, Shin-ichi ; Umayahara, Yutaka ; Itakura, Yasushi ; Nakagawa, Tsutomu ; Taiji, Mutsuo ; Kajimoto, Yoshitaka ; Hori, Masatsugu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c371t-996478e08fc27925680b3eb6e9e11fee78417d6576a991fe134716a9ade17cec3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2003</creationdate><topic>Animals</topic><topic>Associated diseases and complications</topic><topic>Biological and medical sciences</topic><topic>Blood Glucose - analysis</topic><topic>Brain-Derived Neurotrophic Factor - pharmacology</topic><topic>Carboxy-Lyases - genetics</topic><topic>Diabetes. 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To elucidate the mechanism of BDNF on glucose metabolism, we determined the glucose turnover under basal and euglycemic hyperinsulinemic (insulin infusion rate, 54 pmol · kg−1 · min−1) clamp conditions in obese insulin-resistant rats, male Zucker fatty rats, which had been acutely administered a subcutaneous injection of BDNF (20 mg/kg) (n = 9, BDNF) or vehicle (n = 8, vehicle). Under the basal condition, acute administration of BDNF did not affect the blood glucose level, plasma insulin level, rate of glucose disappearance (Rd), and endogenous glucose production (EGP). Under the clamp condition, the glucose infusion rate (GIR) was significantly higher in BDNF than in vehicle (mean ± SD, 61.4 ± 19.1 v 41.4 ± 4.9 μmol · kg−1 · min−1, P <.05). There was no significant difference in Rd and EGP between the 2 groups under the clamp condition, but the insulin-mediated suppression ratio of endogenous glucose production in BDNF was significantly greater than in vehicle (48.9 ± 22.2 v 22.4% ± 20.6%, P <.05). In BDNF, mRNA expressions of hepatic phosphoenolpyruvate carboxykinase (PEPCK) and glucose-6-phosphatase (G6Pase) were comparable to those of vehicle, while hepatic glucokinase (GK) mRNA expression was significantly higher (1.57 ± 0.33 v 1.03 ± 0.17, P <.05). We conclude that BDNF mainly improves hepatic insulin resistance in obese insulin-resistant rats, probably by affecting the hepatic GK flux. Copyright 2003, Elsevier Science (USA). All rights reserved.</abstract><cop>New York, NY</cop><pub>Elsevier Inc</pub><pmid>12601633</pmid><doi>10.1053/meta.2003.50026</doi><tpages>6</tpages></addata></record> |
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subjects | Animals Associated diseases and complications Biological and medical sciences Blood Glucose - analysis Brain-Derived Neurotrophic Factor - pharmacology Carboxy-Lyases - genetics Diabetes. Impaired glucose tolerance Endocrine pancreas. Apud cells (diseases) Endocrinopathies Glucokinase - genetics Glucose-6-Phosphatase - genetics Glycogen - metabolism Insulin - blood Insulin Resistance Liver - drug effects Liver - physiopathology Male Medical sciences Metabolic diseases Obesity Obesity - physiopathology Rats Rats, Zucker RNA, Messenger - metabolism |
title | Brain-derived neurotrophic factor ameliorates hepatic insulin resistance in Zucker fatty rats |
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