Identification of insulin-like growth factor-binding protein-2 (IGF-BP-2) and a low molecular weight IGF-BP in human seminal plasma.

Rosenfeld, R G; Pham, H; Oh, Y; Lamson, G; Giudice, L C · J Clin Endocrinol Metab · 1990

basic_science · Level V

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Abstract

Three distinct binding proteins for the insulin-like growth factors (IGF-BPs) have recently had their cDNAs cloned and sequenced. We have evaluated IGF-BP expression in normal, oligospermic and azospermic human seminal plasma (SP), and have identified IGF-BP-2 in all samples. Additionally, SP contains a non-glycosylated low molecular weight IGF-BP (24K), which does not appear to be structurally or immunologically related to IGF-BP-1, -2 or -3.

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