维生素D的生物学特点及其与儿童咳嗽变异性哮喘的相关性

维生素D是人体不可缺少的维生素,具有多种生物学功能。其传统生理作用是维持细胞、组织的正常生长发育,调节体内钙的平衡，缺乏会导致人体钙的吸收及利用障碍,严重时可导致儿童佝偻病、骨软化症的发生。随着人们对维生素D作用的进一步研究，发现维生素D除了调节钙代谢外，还可通过作用于先天性免疫和适应性免疫进而影响免疫系统，具有免疫调节作用。通过对免疫系统的调节，维生素D对儿童咳嗽变异性哮喘的治疗具有一定作用。

Biological characteristics of vitamin D and its association with childhood cough variant asthma

Vitamin D is an essential vitamin in human body, with a variety of biological functions. Its traditional function is to maintain the normal growth and development of cells and tissues, regulate the balance of calcium in body. The lack of vitamin D can lead to the body can not absorb and use calcium,severe cases can lead to rickets in children and osteomalacia occurred. With the further study on the role of vitamin D, people find that, except the role of regulating the balance of calcium, vitamin D can affect the immune system by acting on innate and adaptive immunity, with the role of immune regulation. It has a certain effect on children cough variant asthma by regulating the immune system.