全身性钙质沉着综合征[CR(E)ST] CR(E)ST syndrome
钙经过有漏缝的细胞膜流进肌细胞，造成全身低钙血症。
Calcium flows into muscle cells through leaky membranes, causing systemic hypocalcemia.
甲状腺激素通过增加一氧化氮的产生和通过增加小动脉内的钙再摄取而降低全身血管阻力，这导致平滑肌松弛。
Thyroid hormones decrease systemic vascular resistance by increasing production of nitric oxide and by increasing calcium reuptake within the arterioles, which leads to smooth muscle relaxation55.
目的探讨不同钙摄入量对我国青年女性全身及各部位骨密度的影响，为进一步研究制定我国居民钙的适宜摄入量提供科学依据。
Objective To explore the effect of calcium supplementation on bone mineral density(BMD)in Chinese young women and to identify the adequate calcium intake level.
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