3 үр дүн
The endocrine system to maintain calcium homeostasis involves the active vitamin D, as well as parathyloid hormone (PTH). Based on this 'classical' calcium-regulatory function, 1,25-(OH)2D3 and 1 alpha OHD3 was developed as the drug for vitamin D resistant rickets, renal dystrophy, and osteoporosis.
The insulin-like growth factor-1 receptor (IGF-1 receptor) is a receptor tyrosine kinase, highly homologous to the insulin receptor. In contrast to the insulin receptor, which is mostly involved in metabolic pathways, the IGF-1 system plays a pivotal role in normal and neoplastic cell growth through
Local estrogen metabolism may play an important role in modulating cell development in peripheral tissues such as breast, adipose, and bone. C19 androgens are converted to C18 estrogens by the enzyme aromatase, overexpression of which is associated with breast cancer. Interconversion of active