首页> 外文期刊>Comparative Medicine >Enhanced Expression of Ca2+ Channel α1A and 4 Subunits and Phosphorylated Tyrosine Hydroxylase in the Adrenal Gland of N-type Ca2+ Channel α1B Subunit-deficient Mice with a CBA/JN Genetic Background
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Enhanced Expression of Ca2+ Channel α1A and 4 Subunits and Phosphorylated Tyrosine Hydroxylase in the Adrenal Gland of N-type Ca2+ Channel α1B Subunit-deficient Mice with a CBA/JN Genetic Background

机译:具有CBA / JN遗传背景的N型Ca2 +通道α 1B亚基缺陷型小鼠肾上腺中Ca2 +通道α 1A和#59137; 4亚基和磷酸化酪氨酸羟化酶的增强表达

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Electrophysiologicstudieshavedemonstratedthatadrenalmedullachromaffincellsexpressvoltage-dependentP/Q-,N-,L-,andR-typeCasupxmlns="http://pub2web.metastore.ingenta.coms/"2+/supchannelsandthatthesechannelsregulatereleaseofnorepinephrineandepinephrine.However,N-typeCasupxmlns="http://pub2web.metastore.ingenta.coms/"2+/supchannel#945;subxmlns="http://pub2web.metastore.ingenta.coms/"1B/sub-deficientmicewithaCBA/JNbackgroundshownormalplasmanorepinephrineandepinephrinelevels,presumablyowingtocompensationbyothergene(s).ToexaminetheexpressionpatternsoftheP/Q-type#945;subxmlns="http://pub2web.metastore.ingenta.coms/"1A/sub,L-type#945;subxmlns="http://pub2web.metastore.ingenta.coms/"1C/sub/#945;subxmlns="http://pub2web.metastore.ingenta.coms/"1D/sub,andR-type#945;subxmlns="http://pub2web.metastore.ingenta.coms/"1E/sub,#59137;subxmlns="http://pub2web.metastore.ingenta.coms/"1/sub,#59137;subxmlns="http://pub2web.metastore.ingenta.coms/"2/sub,#59137;subxmlns="http://pub2web.metastore.ingenta.coms/"3/sub,and#59137;subxmlns="http://pub2web.metastore.ingenta.coms/"4/subsubunits,aswellasoftyrosinehydroxylase(Th),dopamine#59137;hydroxylase(Dbh),andphenylethanolamine-N-methyltransferase(Pnmt)intheadrenalglandof#945;subxmlns="http://pub2web.metastore.ingenta.coms/"1B/sub-deficientmice,weusedreal-timequantitativereversetranscription#8211;polymerasechainreactionandWesternblotanalyses.Theexpressionlevelsof#945;subxmlns="http://pub2web.metastore.ingenta.coms/"1A/sub,#59137;subxmlns="http://pub2web.metastore.ingenta.coms/"4/sub,Th,andThphosphorylatedatserine40werehigherinhomozygousmicethaninwild-typeandheterozygousmice,buttheexpressionlevelsof#945;subxmlns="http://pub2web.metastore.ingenta.coms/"1C/sub,#945;subxmlns="http://pub2web.metastore.ingenta.coms/"1D/sub,#945;subxmlns="http://pub2web.metastore.ingenta.coms/"1E/sub,#59137;subxmlns="http://pub2web.metastore.ingenta.coms/"1/sub,#59137;subxmlns="http://pub2web.metastore.ingenta.coms/"2/sub,#59137;subxmlns="http://pub2web.metastore.ingenta.coms/"3/sub,Dbh,andPnmtdidnotdifferamongwild-type,heterozygous,andhomozygousmice.TheseresultssuggestthatthecompensatorymechanismstomaintainnormallevelsofepinephrineandnorepinephrineintheadrenalglandofN-typeCasupxmlns="http://pub2web.metastore.ingenta.coms/"2+/supchannel#945;subxmlns="http://pub2web.metastore.ingenta.coms/"1B/sub-deficientmiceincludeincreasedexpressionof#945;subxmlns="http://pub2web.metastore.ingenta.coms/"1A/suband#59137;subxmlns="http://pub2web.metastore.ingenta.coms/"4/subsubunitsandincreasedcatecholaminebiosyntheticactivity.
机译:电生理研究表明,肾上腺髓质嗜铬细胞表达电压依赖性的P / Q-,N-,L-和R型Ca 2 + 通道,并且这些通道调节了N型肾上腺素和肾上腺素的释放。 supxmlns =“ http://pub2web.metastore.ingenta.coms/”> 2 + channel#945; 1B -缺乏CBA / JN背景的小鼠,其血浆正常血浆中的肾上腺素和肾上腺素水平正常,推测是由于其他基因的补偿。请检查表达式patternsoftheP / Q-type#945; 1A ,L类型#945; 1C /#945; 1D ,和R-type#945; 1E ,#59137; 1,#59137;2,# 59 137; 3 ,和#59137; 4 亚基,阿斯维拉软酪氨酸羟化酶(Th),多巴胺#59137;羟化酶(Dbh)和苯乙醇胺-N-甲基转移酶(Pnmt)intheadrenalglandof#945; 1B 缺陷小鼠,使用实时定量逆转录#8211;聚合酶链反应和蛋白质印迹分析。表达水平为#945; 1A ,#59137; 4 ,Th和磷酸化丝氨酸40的纯合子性比野生型和杂合子性高,但是表达水平为#945; 1C,#945;1D,#945; 1E ,#59137; 1 ,#5 9137; 2 ,#59137; 3 ,Dbh和Pnmtdididnotdifferam在野生型,杂合子和纯合子小鼠中进行。结果表明,补偿机制可保持正常水平,从而使肾上腺素和无肾上腺素降低了N型Ca肾上腺素的含量 1B -deficientmiceincludeincreasedexpressionof#945; 1A 和#59137; 4 亚基并增加了儿茶酚胺的生物合成活性。

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