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Parathyroid Hormone. Pharmacological characteristics of drugs targeted on calcium-sensing receptor.-properties of cinacalcet hydrochloride as allosteric modulator- Nagano Nobuo 1 , Tsutsui Takaaki 2 1Kidney Disease and Dialysis Center, Hidaka-kai, Takasaki, Gunma, Japan/Department of Medicine, Medical Center East, Tokyo Women's Medical University, Tokyo, Japan. 2Kidney Disease and Dialysis Center, Hidaka-kai, Takasaki, Gunma, Japan. pp.839-850
Published Date 2016/5/28
DOI https://doi.org/10.20837/4201606033
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 Calcimimetics act as positive allosteric modulators of the calcium-sensing receptor(CaSR), thereby decreasing parathyroid hormone(PTH)secretion from the parathyroid glands. On the other hand, negative allosteric modulators of the CaSR with stimulatory effect on PTH secretion are termed calcilytics. The calcimimetic cinacalcet hydrochloride(cinacalcet)is the world's first allosteric modulator of G protein-coupled receptor to enter the clinical market. Cinacalcet just tunes the physiological effects of Ca2+,an endogenous ligand, therefore, shows high selectivity and low side effects. Calcimimetics also increase cell surface CaSR expression by acting as pharmacological chaperones(pharmacoperones).It is considered that the cinacalcet-induced upper gastrointestinal problems are resulted from enhanced physiological responses to Ca2+ and amino acids via increased sensitivity of digestive tract CaSR by cinacalcet. While clinical developments of calcilytics for osteoporosis were unfortunately halted or terminated due to paucity of efficacy, it is expected that calcilytics may be useful for the treatment of patients with activating CaSR mutations, asthma, and idiopathic pulmonary artery hypertension.



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電子版ISSN 印刷版ISSN 0917-5857 医薬ジャーナル社

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