A mathematical model for LH levels in the recently-castrated rat is presented. It is simply based on an increase of both production and release of pituitary LH after castration. Solutions of the model equations are shown to correlate well with data in the adult rat when the release rate-...
LH levels were elevated during the time of nest inspection in females and peaked during egg laying. In contrast, LH levels were highest in males during nest inspection but were lower during egg laying. In both sexes, LH continued to decline during incubation and care of the young but rose ...
LH production is controlled by a complex series of hormones, which are produced by the gonads (the ovaries in females and the testes in males), the pituitary gland and the hypothalamus. Levels of LH increase prior to ovulation; tests can be used to determine when ovulation is set to occur...
Serum levels of LH, FSH, estradiol and progesterone in female rats experimentally infected by Trypanosoma evansidoi:10.1016/j.exppara.2013.06.008ProtozoaRattus norvegicusFemalesHormonesReproductionAbstract The goal of this study was to evaluate reproductive hormones in sera samples of female rats ...
The hormone levels in the human body are crucial for maintaining normal physiological function and health. It is necessary for us to understand the functions of LH, HCG, and FSH hormones in the human reproductive system; The range of LH, HCG, and FSH values for males and females.人体内的...
Finally, the ER-beta and PRB levels were down-regulated in uterus tissue and only MT1R was up-regulated. Conclusions We suggest that melatonin partially suppress the hypothalamus-pituitary-ovarian axis, in addition, it induces differential regulation of sex steroid receptors in the ovary, oviduct ...
Scarce information is available on serum FSH and LH levels, determined by highly sensitive assays. We evaluate gonadotropic age profiles in children of both sexes using an enzimoinmunoassay, in presence of two monoclonal antibodies (MEIA). 124 females (F) were studied: 55 prepubertal (Group G1...
Serum levels of LH in normal females were significantly lower (1.07 ± 1.80 and 3.85 ± 3.4 U/L) and those of FSH significantly higher (7.68±7.12 and 2.82 ± 2.75 U/L) than in normal M, respectively. No correlation was found between serum LH or FSH with age(5-90 days old) in C...
is concluded that the “trigger” for LH discharge, in the rhesus monkey, consists of an effective increment in circulating estrogen levels which must be maintained for at least 12 hr and that this positive feedback action of the steroid is clearly operative only in nonlactating adult females....
Follicular maturation and reproduction in females need the synergy and interaction of both Extragonadal effects of gonadotropins Most of the extragonadal, and also many of the gonadal effects of gonadotropins are indirect consequences of the stimulation of gonadal steroid biosynthesis. However, LH/hCG...