luteinizing hormone

(redirected from LH surge)
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  • noun

Synonyms for luteinizing hormone

a gonadotropic hormone that is secreted by the anterior pituitary

References in periodicals archive ?
Also, the in vivo- developed oocyte develops within the follicular fluid and it rises with LH surge; interestingly, in-vitro, oocytes develop the following expulsion from the negative (from an administrative point of view) follicular fluid pressure without the stimulus by the LH surge.
And secondly, a single time point estimation of serum LH might not be useful due to its pulsatile nature and that the duration of LH surge is a better predictor of oocyte maturation, although its measurement is not clinically practical (21).
These data suggested that the DSHH can successfully reverse LH surge after ovary removal and also increase the monoamine neurotransmitters in the menopausal rats with the lack of interest, loss of will behavior, loss of pleasure, and so on.
Although the induction of final follicular maturation using GnRH agonist with its advantages over hCG trigger represents a paradigm shift in the ovulation triggering concept in ART, kisspeptins have also been shown to effectively elicit an LH surge, which suggests a completely new, 'natural' pharmacological option and as a new trigger concept (35).
So in the present study, as the versican levels were significantly decreased in the PCOS group, we suggested that it was the primary component of the COCs cleaved during ovulation by the induction of LH surge. However, the insignificantly lower levels of ADAMTS-1 which were observed in our study suggested its important but not the only role in the degradation of ECM components.
This "LH surge" triggers ovulation, thereby not only releasing the egg [28] but also initiating the conversion of the residual follicle into a corpus luteum, which, in turn, produces progesterone to prepare the endometrium for a possible implantation.
Due to the absence of a premature LH surge, no gonadotropin-releasing hormone (GnRH) antagonist was administered.
The anti-progesterone RU486 also induces a reduction in the amount of ovulatory LH released as well as inadequate follicular development at the time of the LH surge and a dual mechanism has been suggested for the an ovulatory action of RU486 in rats on the basis of this evidence.
Pregnancy and birth after GnRH agonist treatment for induction of final oocyte maturation in a woman undergoing ovarian stimulation for ICSI, using a GnRH antagonist (Orgalutran/Antagon) to prevent a premature LH surge: a case report.
There is no benefit to giving human chorionic gonadotropin (hCG) if the patient has a spontaneous LH surge. The pregnancy rate might actually be reduced by 25% when hCG is given unnecessarily.
"If couples are only trying to conceive following the LH surge they many find it difficult to get pregnant.
Administration of LPS inhibits tonic luteinizing hormone (LH) secretion in many species including rats [12], sheep [13], cattle [1], and nonhuman primates [4] as well as delays or completely blocks the preovulatory LH surge [14].