Adjunctive growth hormone during ovarian hyperstimulation increases levels of insulin-like growth factor binding proteins in follicular fluid: A randomized, placebo-controlled, cross-over study

Jaron Rabinovici, Nicholas A. Cataldo*, Pramila Dandekar, Stephen M. Rosenthal, Sharron E. Gargosky, Neil Gesundheit, Mary C. Martin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

GH increases circulating insulin-like growth factor I (IGF-I), which can promote the growth and differentiated function of ovarian granulosa and theca cells. Reported studies of GH as an adjunct to menotropin stimulation in women, largely those with ovarian dysfunction, have not consistently shown a benefit of GH, despite increases in serum and follicular fluid IGF-I. We hypothesized that changes in intrafollicular IGF-binding proteins (IGFBPs), which can antagonize IGF actions on granulosa cells, may underlie the inconsistent effects of GH. In the present study of GH, administered in double-blind, placebo-controlled, cross-over fashion to regularly cycling women undergoing in vitro fertilization, we found that follicular fluid levels of IGFBP-1, -3, and-4 and serum levels of IGFBP-3, as well as follicular fluid and serum IGF-I, were significantly increased in the GH- treated cycles, when compared with the placebo cycle of the same patient. We suggest that the net increase in intrafollicular IGFBPs in GH cycles may mitigate the potential beneficial effect of increased IGF-I.

Original languageEnglish
Pages (from-to)1171-1176
Number of pages6
JournalJournal of Clinical Endocrinology and Metabolism
Volume82
Issue number4
DOIs
StatePublished - 1997
Externally publishedYes

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