OBJECTIVE The expression of oestrogen and progesterone receptors in patients with adenocarcinoma of the uterine cervix was examined in order to determine their influence on prognosis and to evaluate the association between the steroid receptor expression and various clinicopathologic parameters. PATIENTS AND METHODS Oestrogen and progesterone receptor expression was investigated by immunohist...

Background: Papillary thyroid carcinoma (PTC), occurs mostly in women and sex hormones may play a role in the pathogenesis and clinical course. The objective of this study was to determine the status and prevalence of estrogen and progesterone receptors in PTC with regard to age, gender, tumor size and lymph node involvement. Methods: Immunohistochemical stains were performed on 92 tissue bl...

In the rat, the conformationally highly bent steroid 21-hydroxy-6, 19-oxidoprogesterone efficiently displaces [3H]corticosterone from thymus-glucocorticoid receptors and blocks type II receptors in kidney cytosols but competes with neither [3H]aldosterone for kidney-mineralocorticoid receptors nor [3H]progesterone for uterus-progesterone receptors. It evokes Na+ retention only at very high dose...

Seven cases of colorectal adenocarcinomas were investigated for the presence of oestrogen receptors and progesterone receptors. The tumours specifically bound oestradiol. This binding almost exclusively resulted from the presence of high numbers of type II oestrogen binding sites. Oestrogen receptors were absent or present at very low concentrations. Immunohistochemical investigation of nuclear...

Recent studies suggest that progestin receptors may be activated in vivo by neurotransmitters in the absence of ligand. More specifically, vaginal-cervical stimulation (VCS) can influence sexual behavior by activating progestin receptors in the absence of progesterone. Another way to test if progestin receptors are influenced by particular stimuli is to examine progestin receptor immunostaining...

The reliability of the rabbit monoclonal antibodies SP1, SP2, SP3, and 4B5 was immunohistochemically assessed on a range of 96 invasive breast carcinomas and the results compared with those achieved with established antibody markers for estrogen receptors (6F11), progesterone receptors (PgR636), and HER2 (polyclonal A0485 and clone CB11), with HER2 status validated by fluorescence in situ hybri...

AIM The purpose of the present study is to evaluate the relationship between endometrial concentrations of estrogen and progesterone receptors throughout the menstrual cycle in women with unexplained infertility. MATERIAL AND METHODS In forty four infertile women with unexplained infertility, biopsy of the endometrium was performed during simultaneous laparoscopy and hysteroscopy. Material wa...

Spironolactone (SL) is an antimineralocorticoid derived from progesterone, and was therefore developed as a diuretic for hypertension edema treatment (Kolkhof & Barfacker, 2017). As prodrug, its effects are largely mediated by metabolites, 7α-thiomethylspironolactone canrenone (Janowski et al., 1996), which ultimately eliminated through the urine (Abshagen 1977). Later on, it discovered tha...

Progesterone stimulates sperm functions, e.g. hyperactivation, acrosome reaction, binding to oocyte zona pellucida and penetration rate into the hamster oocyte. The physiological relevance of these effects has been shown using female genital tract fluids which modulate sperm function according to their progesterone content. Progesterone interacts with specific sperm binding sites that, unlike t...

The estrogen-induced hamster renal carcinoma contains appreciable amounts of all cytosolic steroid receptor classes sedimenting as 7 to 8S moieties following sucrose gradient centrifugation. Their relative concentrations, expressed in fmol/mg protein +/- S.E. are progesterone (1496 +/- 23) greater than estradiol (218 +/- 3) greater than 5 alpha-dihydrotestosterone (154 +/- 7) greater than dexam...