Alpha2-adrenoceptor-mediated antisecretory effect of hypoxia in conscious rats
Gastric acid secretion is suppressed, resulting in a significant rise in gastric pH, when conscious rats are exposed to hypoxia. Then adrenal medullectomized rats were exposed to moderate hypoxia for 3 h, gastric acid secretion was restored to nearly the level in normoxia by the adrenal medullectomy...
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| Veröffentlicht in: | Bioscience, biotechnology, and biochemistry biotechnology, and biochemistry, 1998, Vol.62 (3), p.546-549 |
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| container_title | Bioscience, biotechnology, and biochemistry |
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| creator | Yamaji, R. (Osaka Prefectural Univ., Sakai (Japan)) Ohnishi, Y Sakamoto, M Takenoshita, M Ohta, M Tsuyama, S Watanabe, F Inui, H Miyatake, K Nakano, Y |
| description | Gastric acid secretion is suppressed, resulting in a significant rise in gastric pH, when conscious rats are exposed to hypoxia. Then adrenal medullectomized rats were exposed to moderate hypoxia for 3 h, gastric acid secretion was restored to nearly the level in normoxia by the adrenal medullectomy. In severe hypoxia, the operation also caused an increase in the level of gastric acid output, although the extent was lower than that under 10.5% O2 hypoxic conditions. Gastric pH was normalized by the operation even with 7.6% O2 hypoxia. Similar results were obtained when reserpine, which causes an adrenergic discharge, was administered. When an alpha2-adrenoceptor blocking agent, yohimbine, was administered, the inhibitory effect of 10.5% and 7.6% O2 hypoxia on gastric acid secretion was almost completely removed. However, neither prazosin nor propranolol showed any significant effects on gastric acid output in hypoxia. These results indicate that acute hypoxia stimulated the adrenergic response from the adrenal medulla, and that gastric acid secretion was consequently suppressed through alpha2-adrenoceptor |
| doi_str_mv | 10.1271/bbb.62.546 |
| format | Article |
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(Osaka Prefectural Univ., Sakai (Japan)) ; Ohnishi, Y ; Sakamoto, M ; Takenoshita, M ; Ohta, M ; Tsuyama, S ; Watanabe, F ; Inui, H ; Miyatake, K ; Nakano, Y</creator><creatorcontrib>Yamaji, R. (Osaka Prefectural Univ., Sakai (Japan)) ; Ohnishi, Y ; Sakamoto, M ; Takenoshita, M ; Ohta, M ; Tsuyama, S ; Watanabe, F ; Inui, H ; Miyatake, K ; Nakano, Y</creatorcontrib><description>Gastric acid secretion is suppressed, resulting in a significant rise in gastric pH, when conscious rats are exposed to hypoxia. Then adrenal medullectomized rats were exposed to moderate hypoxia for 3 h, gastric acid secretion was restored to nearly the level in normoxia by the adrenal medullectomy. In severe hypoxia, the operation also caused an increase in the level of gastric acid output, although the extent was lower than that under 10.5% O2 hypoxic conditions. Gastric pH was normalized by the operation even with 7.6% O2 hypoxia. Similar results were obtained when reserpine, which causes an adrenergic discharge, was administered. When an alpha2-adrenoceptor blocking agent, yohimbine, was administered, the inhibitory effect of 10.5% and 7.6% O2 hypoxia on gastric acid secretion was almost completely removed. However, neither prazosin nor propranolol showed any significant effects on gastric acid output in hypoxia. These results indicate that acute hypoxia stimulated the adrenergic response from the adrenal medulla, and that gastric acid secretion was consequently suppressed through alpha2-adrenoceptor</description><identifier>ISSN: 0916-8451</identifier><identifier>EISSN: 1347-6947</identifier><identifier>DOI: 10.1271/bbb.62.546</identifier><language>eng</language><subject>ADRENAL GLANDS ; ADRENALINE ; ANIMAL DE LABORATOIRE ; ANIMALES DE LABORATORIO ; ANOXIA ; ANOXIE ; DIGESTIVE JUICES ; ENUCLEACION ; ENUCLEATION ; EPINEFRINA ; EPINEPHRINE ; GLANDULAS SUPRARRENALES ; HORMONE RECEPTORS ; JUGOS DIGESTIVOS ; LABORATORY ANIMALS ; RAT ; RATA ; RATS ; RECEPTEUR D'HORMONE ; RECEPTORES DE HORMONAS ; SECRECION ; SECRETION ; SUC DIGESTIF ; SURRENALE ; YOHIMBINE ; YUMBINA</subject><ispartof>Bioscience, biotechnology, and biochemistry, 1998, Vol.62 (3), p.546-549</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c2356-fe98cb73505f1bfb97d2936e21225ccde4f3fa1a246cfbdc955f44c1703dde1c3</citedby><cites>FETCH-LOGICAL-c2356-fe98cb73505f1bfb97d2936e21225ccde4f3fa1a246cfbdc955f44c1703dde1c3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,4010,27900,27901,27902</link.rule.ids></links><search><creatorcontrib>Yamaji, R. 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In severe hypoxia, the operation also caused an increase in the level of gastric acid output, although the extent was lower than that under 10.5% O2 hypoxic conditions. Gastric pH was normalized by the operation even with 7.6% O2 hypoxia. Similar results were obtained when reserpine, which causes an adrenergic discharge, was administered. When an alpha2-adrenoceptor blocking agent, yohimbine, was administered, the inhibitory effect of 10.5% and 7.6% O2 hypoxia on gastric acid secretion was almost completely removed. However, neither prazosin nor propranolol showed any significant effects on gastric acid output in hypoxia. These results indicate that acute hypoxia stimulated the adrenergic response from the adrenal medulla, and that gastric acid secretion was consequently suppressed through alpha2-adrenoceptor</description><subject>ADRENAL GLANDS</subject><subject>ADRENALINE</subject><subject>ANIMAL DE LABORATOIRE</subject><subject>ANIMALES DE LABORATORIO</subject><subject>ANOXIA</subject><subject>ANOXIE</subject><subject>DIGESTIVE JUICES</subject><subject>ENUCLEACION</subject><subject>ENUCLEATION</subject><subject>EPINEFRINA</subject><subject>EPINEPHRINE</subject><subject>GLANDULAS SUPRARRENALES</subject><subject>HORMONE RECEPTORS</subject><subject>JUGOS DIGESTIVOS</subject><subject>LABORATORY ANIMALS</subject><subject>RAT</subject><subject>RATA</subject><subject>RATS</subject><subject>RECEPTEUR D'HORMONE</subject><subject>RECEPTORES DE HORMONAS</subject><subject>SECRECION</subject><subject>SECRETION</subject><subject>SUC DIGESTIF</subject><subject>SURRENALE</subject><subject>YOHIMBINE</subject><subject>YUMBINA</subject><issn>0916-8451</issn><issn>1347-6947</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1998</creationdate><recordtype>article</recordtype><recordid>eNotkEtLAzEYRYMoWKsb90LWQmre0yxL8UlRF7oOeXyxkXYyJCPYf--Iri4cDndxELpkdMF4x2689wvNF0rqIzRjQnZEG9kdoxk1TJOlVOwUnbX2SekEFJuh59Vu2DpOXKzQlwDDWCrZQ8xuhIhdP-YGocJEDxhSgjDikvD2MJTv7HDucSh9C7l8NVzd2M7RSXK7Bhf_O0fvd7dv6weyebl_XK82JHChNElglsF3QlGVmE_edJEboYEzzlUIEWQSyTHHpQ7Jx2CUSlIG1lERI7Ag5uj67zfU0lqFZIea964eLKP2t4SdSljN7VRikq_-5OSKdR81N_v0yowxU4Ul78QPx4lbxA</recordid><startdate>1998</startdate><enddate>1998</enddate><creator>Yamaji, R. 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(Osaka Prefectural Univ., Sakai (Japan))</creatorcontrib><creatorcontrib>Ohnishi, Y</creatorcontrib><creatorcontrib>Sakamoto, M</creatorcontrib><creatorcontrib>Takenoshita, M</creatorcontrib><creatorcontrib>Ohta, M</creatorcontrib><creatorcontrib>Tsuyama, S</creatorcontrib><creatorcontrib>Watanabe, F</creatorcontrib><creatorcontrib>Inui, H</creatorcontrib><creatorcontrib>Miyatake, K</creatorcontrib><creatorcontrib>Nakano, Y</creatorcontrib><collection>AGRIS</collection><collection>CrossRef</collection><jtitle>Bioscience, biotechnology, and biochemistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yamaji, R. (Osaka Prefectural Univ., Sakai (Japan))</au><au>Ohnishi, Y</au><au>Sakamoto, M</au><au>Takenoshita, M</au><au>Ohta, M</au><au>Tsuyama, S</au><au>Watanabe, F</au><au>Inui, H</au><au>Miyatake, K</au><au>Nakano, Y</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Alpha2-adrenoceptor-mediated antisecretory effect of hypoxia in conscious rats</atitle><jtitle>Bioscience, biotechnology, and biochemistry</jtitle><date>1998</date><risdate>1998</risdate><volume>62</volume><issue>3</issue><spage>546</spage><epage>549</epage><pages>546-549</pages><issn>0916-8451</issn><eissn>1347-6947</eissn><abstract>Gastric acid secretion is suppressed, resulting in a significant rise in gastric pH, when conscious rats are exposed to hypoxia. Then adrenal medullectomized rats were exposed to moderate hypoxia for 3 h, gastric acid secretion was restored to nearly the level in normoxia by the adrenal medullectomy. In severe hypoxia, the operation also caused an increase in the level of gastric acid output, although the extent was lower than that under 10.5% O2 hypoxic conditions. Gastric pH was normalized by the operation even with 7.6% O2 hypoxia. Similar results were obtained when reserpine, which causes an adrenergic discharge, was administered. When an alpha2-adrenoceptor blocking agent, yohimbine, was administered, the inhibitory effect of 10.5% and 7.6% O2 hypoxia on gastric acid secretion was almost completely removed. However, neither prazosin nor propranolol showed any significant effects on gastric acid output in hypoxia. These results indicate that acute hypoxia stimulated the adrenergic response from the adrenal medulla, and that gastric acid secretion was consequently suppressed through alpha2-adrenoceptor</abstract><doi>10.1271/bbb.62.546</doi><tpages>4</tpages><oa>free_for_read</oa></addata></record> |
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| source | J-STAGE Free; Oxford University Press Journals All Titles (1996-Current); Freely Accessible Japanese Titles; EZB-FREE-00999 freely available EZB journals; Free Full-Text Journals in Chemistry |
| subjects | ADRENAL GLANDS ADRENALINE ANIMAL DE LABORATOIRE ANIMALES DE LABORATORIO ANOXIA ANOXIE DIGESTIVE JUICES ENUCLEACION ENUCLEATION EPINEFRINA EPINEPHRINE GLANDULAS SUPRARRENALES HORMONE RECEPTORS JUGOS DIGESTIVOS LABORATORY ANIMALS RAT RATA RATS RECEPTEUR D'HORMONE RECEPTORES DE HORMONAS SECRECION SECRETION SUC DIGESTIF SURRENALE YOHIMBINE YUMBINA |
| title | Alpha2-adrenoceptor-mediated antisecretory effect of hypoxia in conscious rats |
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