Structural requirements for parathyroid hormone action in mature bone. Effects on release of cyclic adenosine monophosphate and bone gamma-carboxyglutamic acid-containing protein from perfused rat hindquarters.

Structural requirements for parathyroid hormone action in mature bone. Effects on release of cyclic adenosine monophosphate and bone gamma-carboxyglutamic acid-containing protein from perfused rat hindquarters.
复制标题

成熟骨中甲状旁腺激素作用的结构要求。

DOI:
--
复制
发表时间:
1985
影响因子:
15.9
通讯作者:
H. Heath
H. Heath
中科院分区:
医学1区
文献类型:
--
作者:
M S Calvo;M J Fryer;K J Laakso;R. Nissenson;P A Price;T M Murray;H. Heath

文献摘要

参考文献

被引文献

相似文献

为了确定成熟骨中甲状旁腺激素(PTH)活性的结构要求,我们用天然牛PTH-(1-84)[bPTH-(1 - 84)]或合成的氨基末端片段牛PTH灌注了手术分离的成年雄性大鼠后躯-(1-34)[bPTH-(1 -34)]。监测环磷酸腺苷(cAMP)和骨钙素(BGP)释放的变化,作为骨特异性响应PTH的证据;通过对非骨骼组织响应PTH的体外检查证实cAMP响应的组织特异性。给予具有生物活性的单碘化125 I-bPTH-(1-84),以确定成熟鼠骨是否切割天然激素。我们发现灌流大鼠骨持续释放BGP,bPTH-(1-84)和bPTH-(1-34)都能强烈抑制这种释放。此外,这两种激素刺激cAMP释放灌注大鼠后躯。当在摩尔基础上检查时,cAMP反应的幅度是剂量依赖性的,并且对于两种激素是相似的,剂量产生一半最大cAMP反应。对bPTH-(1-34)的响应为0.5 nmol,对bPTH-(1-84)的响应为0.7 nmol。此外,生物活性的125 I-bPTH-(1-84)在我们的后躯灌注系统中没有代谢。这些发现表明,PTH-(1-84)不需要额外的骨骼或骨骼切割成氨基末端片段,以刺激cAMP的产生,或抑制BGP释放,成熟大鼠骨。
To determine the structural requirements for parathyroid hormone (PTH) activity in mature bone, we perfused the surgically isolated hindquarters of adult male rats with either native bovine PTH-(1-84) [bPTH-(1-84)] or the synthetic amino-terminal fragment, bovine PTH-(1-34) [bPTH-(1-34)]. Changes in the release of cyclic AMP (cAMP) and bone Gla protein (BGP) were monitored as evidence of bone-specific response to PTH; tissue specificity of the cAMP response was confirmed through in vitro examination on nonskeletal tissue response to PTH. Biologically active, monoiodinated 125I-bPTH-(1-84) was administered to determine if mature murine bone cleaves native hormone. We found that perfused rat bone continuously releases BGP, and that both bPTH-(1-84) and bPTH-(1-34) acutely suppress this release. In addition, both hormones stimulate cAMP release from perfused rat hindquarters. When examined on a molar basis, the magnitude of the cAMP response was dose-dependent and similar for both hormones, with doses yielding half-maximal cAMP responses. The response for bPTH-(1-34) was 0.5 nmol and for bPTH-(1-84) was 0.7 nmol. Moreover, biologically active 125I-bPTH-(1-84) was not metabolized in our hindquarter perfusion system. These findings indicate that PTH-(1-84) does not require extraskeletal or skeletal cleavage to an amino-terminal fragment in order to stimulate cAMP generation in, or suppress BGP release from, mature rat bone.
禽类骨细胞中的甲状旁腺激素受体。
DOI: 10.1073/pnas.79.6.2061
发表时间: 1982
影响因子: 11.1
作者:
Pliam,NB;Nyiredy,KO;Arnaud,CD
通讯作者: Arnaud,CD
1,25-二羟基维生素 D3 增加骨肉瘤细胞合成维生素 K 依赖性骨蛋白。
DOI: --
发表时间: 1980
期刊: The Journal of biological chemistry
影响因子: --
作者:
Price,PA;Baukol,SA
通讯作者: Baukol,SA
DOI: 10.1016/s0021-9258(18)42960-2
发表时间: 1981-12
期刊: The Journal of biological chemistry
影响因子: --
作者:
P. Price;M. Williamson;J. W. Lothringer
通讯作者: P. Price;M. Williamson;J. W. Lothringer
内源性生物活性人甲状旁腺激素:通过鸟苷酸扩增肾腺苷酸环化酶测定进行测量。
DOI: 10.1210/jcem-52-5-840
发表时间: 1981
期刊: The Journal of clinical endocrinology and metabolism
影响因子: --
作者:
Nissenson,RA;Abbott,SR;Teitelbaum,AP;Clark,OH;Arnaud,CD
通讯作者: Arnaud,CD
牛肾组织蛋白酶 D 催化甲状旁腺激素裂解的 ATP 激活。
DOI: --
发表时间: 1983
期刊: The Journal of biological chemistry
影响因子: --
作者:
Pillai,S;BottiJr,R;Zull,JE
通讯作者: Zull,JE