IGF-1 is a peptide that mediates some of the effects of growth hormone and acts through the IGF-1 receptor to control tissue growth and remodeling. In the brain, IGF-1 functions as a neurotrophic factor that, like BDNF, plays a significant role in cognition, neurogenesis, and neuronal survival.
CMV IgG is a type of blood test to test the presence of IgG antibodies which are active in the event of a CMV or cytomegalovirus infection.IgG antibodies are protein substances that are produced by the body to fight the infection caused by the cytomegalovirus.O fasting is required when taking the CMV IgG blood test. The blood sample of the patient involved will be studied in the laboratory for the presence of IgG antibodies or proteins. A positive result could mean that the person being tested has had a past or recent infection with the cytomegalovirus.
Both IgM and IgG refer to a class of immunoglobulin. Antibodies are produced by the immune system to fight antigens like bacteria and viruses. IgM refers to those antibodies that are produced immediately after an exposure to the disease, while IgG refers to a later response. IgG generally confers immunity to a patient so far as that particular disease is concerned.