Objective Growth hormone and its mediator, insulin-like growth factor-1 (IGF-1), have been
suggested to exert gonadotropic actions in both humans and animals. The present study …

It has been suggested that insulin‐like growth factor (IGF)‐1 plays an important role in the
regulation of spermatogenesis in the testes. In the present study, concentrations of total IGF …

Purpose Previous studies have suggested the involvement of serum insulin-like growth
factors (IGFs) and IGF binding proteins (IGFBPs) in the regulation of the female reproductive …

This study was designed to determine whether or not insulin-like growth factor (IGF)-1 and
its receptor are present in the human male genital tract. The IGF-1 receptor was found in …

Objective To examine the levels and origins of insulin-like growth factor I (IGF-I) and
insulinlike growth factor binding proteins (IGFBPs) in the human male genital tract. Design …

Insulin-like growth factor I (IGF-I) has been identified in human seminal plasma. This study
was conducted to determine whether IGF-I is present in bovine seminal plasma, whether …

Insulin-like growth factor-I (IGF-I) and α2-macroglobulin (α2-M) are believed to be involved
in the development of germ cells. IGF-I is mainly controlled by concentrations of human …

Purpose Oligozoospermia is highly prevalent worldwide. Studies have reported a lower
methylation rate in the H19 differentially methylated region at the sperm level in …

OBJECTIVE Previous studies have shown that exogenous growth hormone (GH) produces
increases in sperm motility when given to subfertile men. Previous studies have also …

Insulin-like growth factor-I (IGF-I) is an important factor for germ cell development and
maturation of spermatozoa. Actions of IGFs are modulated by IGF-binding proteins (IGFBPs) …