The physiological mechanism underlying the photo-stimulation is that an increase in photoperiod elevates the rate of secretion of gonadotrophin
-releasing hormone I (GnRH-I), leading to augmented gonadotrophin
secretion, and hence gonadal maturation such as luteinizing hormone (LH) and follicule hormone (FSH) which in turn induce gonad growth and steroid hormone production .
Superovulation is a term used to describe the administration of exogenous gonadotrophin
to induce the growth and maturation of many ovarian follicles to increase the number of mature ovum for fertilization (Baldassarre et al.
Prior to treatment with goserelin acetate, his gonadotrophins
had been consistently in the normal range.
GnRH-antagonists in ovarian stimulation for IVF in patients with poor response to gonadotrophins
, polycystic ovary syndrome, and risk of ovarian hyperstimulation: a meta-analysis.
The action of chrorionic gonadotrophin
in the obese.
It has a suppressive effect on spermatogenesis and gonadotrophin
and testosterone release in rat s .
Thirty percent of the injured patients have transient pituitary insufficiency, particularly growth hormone (GH) and gonadotrophin
deficiency, which normalizes one year after injury in most of the cases (4).
The Edinburgh unit was the second in the world to use human gonadotrophins
for ovulation induction in humans but Brown, later working in Melbourne, would properly rationalise their usage.
They also induce decidualisation and atrophy of the endometriotic tissue and inhibit gonadotrophin
secretion, with resultant reduction in the production of ovarian hormones.
14) Examples of endogenous cross-reactants include similar classes of compounds, like steroids and gonadotrophins
, interfering in one another's assays.
The tests revealed that the amount of hormones used to stimulate the ovary to produce eggs -known as gonadotrophins
-required for ovulation was greater during the darker days.
The latest studies, led by Professor Fred Wu, found that tibolone and Noma suppressed pituitary gonadotrophins
- the hormones that stimulate the production of sperm.
Endometrial ultrasonography as a predictor of pregnancy in an in vitro fertilization programme after ovulation stimulation and gonadotrophin
- releasing hormone and gonadotrophins
Structure-function relationships of gonadotrophins
The active substance in Decapeptyl[R] is triptorelin, a decapeptide analogue of GnRH (Gonadotrophin
Releasing Hormone), a hormone secreted by the hypothalamus, which initially stimulates the release of pituitary gonadotrophins
(hormones produced by the pituitary gland), which in turn control hormonal secretions by the testes and ovaries.