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降钙素基因相关肽（CGRP）是一种内源肽，由mRNA转录后拼接而成的降钙素基因选择性产物。它作为神经传递介质广泛分布于神经系统中，且末梢血管神经终端丰富，CGRP在调整许多器官血流中起重要作用。有证据表明，雷诺氏现象中手指末梢血管合CGRP的神经缺乏，常有手指慢性疼痛、
Calcitonin gene-related peptide (CGRP) is an endogenous peptide spliced by mRNA after calcitonin gene-selective products. It is widely distributed in the nervous system as a neurotransmitter and has abundant terminal nerve terminals. CGRP plays an important role in regulating blood flow in many organs. There is evidence that the phenomenon of Raynaud’s finger peripheral vascular CGRP nerve deficiency, often chronic finger pain,