226256-56-0
226256-56-0 结构式
基本信息
西那卡塞
(aR)-α-Methyl-N-[3-[3-(trifluoromethyl)phenyl)propyl]-1-napthalenemethanamine
AMG 073
(aR)-a-Methyl-N-[3-[3-(trifluoromethyl)phenyl)propyl]-1-napthalenemethanamine
N-((1R)-1-(1-Naphthyl)ethyl)-3-(3-(trifluoromethyl)phenyl)propan-1-amine
物理化学性质
常见问题列表
甲状旁腺激素的主要生理功能有促进骨质溶解，动员骨钙入血，血钙增高，骨和血中碱性磷酸酶活力增加；抑制肾小管对磷酸盐的再吸收，促进尿磷排出增多，血磷降低；PTH通过活化维生素D3，间接促进肠粘膜吸收钙、镁以及磷。PTH分泌主要受血钙浓度的调节。血Ca2+升高，PTH分泌减少，血Ca2+降低则分泌增多。此外，血磷升高可通过降低血钙而刺激PTH分泌，降钙素大量释放也可促使PTH分泌增多。
血清甲状旁腺素的测定除用于研究甲状旁腺疾病外，对鉴别高钙血症和低钙血症的原因有一定价值。主要临床意义如下：
1．辅助诊断甲状旁腺疾病。甲状旁腺机能亢进或异位PTH分泌症时，PTH升高；甲状旁腺机能减退、手术或放疗损伤甲状旁腺等，PTH降低。
2．鉴别高钙血症和低钙血症。由于甲状旁腺功能紊乱引起的血钙异常，血钙多随血清PTH的升降而升降，而其他原因所致血钙异常，PTH则无变化。
Cinacalcet HCl (5 and 10 mg/kg) results in a significant reduction in parathyroid gland weight in 5/6 nephrectomy animals. In sham animals, Cinacalcet HCl has no effect on parathyroid gland cell proliferation or parathyroid weight compared with vehicle treatment. There are no differences in serum phosphorus levels in Cinacalcet HCl (10, 5, or 1 mg/kg) treated 5/6 nephrectomized animals compared with vehicle-treated 5/6 nephrectomized animals. Cinacalcet HCl treatment significantly reduces blood ionized calcium levels in sham animals. Cinacalcet (30 mg/kg/24 h) leads to a marked reduction in circulating parathyroid hormone and a modest reduction in serum Ca. Cinacalcet does not alter UCa when the GHS rats are fed the normal Ca diet but lowers UCa when they are fed the low Ca diet. Cinacalcet does not alter U supersaturation with respect to either CaOx or CaHPO4 on either diet.