In species that solicit and breed easily in captivity, such as canaries (Serinus canaria), the number of displays performed is not related to endogenous levels of plasma estradiol, but the latency to perform the display can be lengthened by blocking estradiol synthesis. No female of any species...
There are no food, fluid, activity, or medication restrictions unless by medical direction.Normal FindingsMethod: Liquid chromatography/mass spectrometry. AgeConventional UnitsSI Units (Conventional Units × 3.67) 12 mo–10 yr Male and female Less than 17 pg/mL Less than 62.4 pmol/L 11...
Estrogen therapy in boys may modify the normal pubertal process.Geriatric UseInsufficient experience with many estradiol-containing preparations in geriatric patients to determine whether geriatric patients respond differently than younger women. Select dosage with caution because of age-related decreases in ...
Estrogen administration leads to increased thyroid-binding globulin (TBG) levels. Patients with normal thyroid function can compensate for the increased TBG by making more thyroid hormone, thus maintaining free T 4and T 3serum concentrations in the normal range. Patients dependent on thyroid hormone ...
Estrogen Levels in Girls with Premature Thelarche Compared to Age Matched Normal Prepubertal Girls as Determined by an Ultrasensitive Recombinant Cell Bioa... ultrasensitive recombinant cell bioassay to study estradiol levels in 20 girls with premature thelarche and 15 normal prepubertal girls less than ...
Girls with TS were significantly shorter, and weighed less than the normal prepubertal girls, as expected. The estradiol level was not significantly correlated with height, bone age, or degree of bone agedelay. In conclusion, girls with TS have significantly lower estradiol levels than normal age...
Moderate levels of PR were induced in other hypothalamic and limbic structures (anterior and lateral hypothalamus, bed nucleus of the stria terminalis, cingulate cortex, medial amygdaloid nucleus, and CA1 subfield of the hippocampus). The PR was not induced by estradiol in cerebral cortex, septum,...
Significant correlations between steroid receptors and serum estradiol and progesterone levels were not found. The highest amounts of both receptors were found in the youngest patients. The concentrations decreased with age to undetectable levels. The decrease in progesterone receptor concentration after ...
Estrogen administration leads to increased thyroid-binding globulin (TBG) levels. Patients with normal thyroid function can compensate for the increased TBG by making more thyroid hormone, thus maintaining free T4 and T3 serum concentrations in the normal range. Patients dependent on thyroid hormone rep...
Combination oral contraceptives inhibit ovulation via a negative feedback mechanism on the hypothalamus, which alters the normal pattern of gonadotropin secretion of a follicle-stimulating hormone (FSH) and luteinizing hormone by the anterior pituitary. The follicular phase FSH and midcycle surge of ...