LH increases the response to FSH in granulosa-lutein cells from sub/poor-responder patients in vitro.

Study Question: Does LH addition to FSH in vitro recover the human primary granulosa lutein cell (hGLC) sub/poor-response?

Summary Answer: A picomolar concentration of LH may recover the FSH-induced cAMP and progesterone production of hGLC from sub/poor-responder women.

What Is Known Already: Clinical studies suggested that FSH and LH co-treatment may be beneficial for the ovarian response of sub/poor-responders undergoing ovarian stimulation during ART.

Study Design, Size, Duration: hGLC samples from 286 anonymous women undergoing oocyte retrieval for ART were collected from October 2017 to February 2021.

Novel leader exons of the cyclic adenosine 3',5'-monophosphate response element modulator (CREM) gene, transcribed from promoters P3 and P4, are highly testis-specific in primates.

Testicular expression of CREM is essential for spermatogenesis in the mouse. From a monkey testis cDNA library we isolated a CREM transcript isoform with a novel 5' exon theta2 which provides at its 3'-end an in-frame ATG to the downstream reading frame. 5'-RACE on human testis cDNA indicated that exon theta2 is > or = 113 bp in size.