14 rezultatet
Testicular feminization syndrome was diagnosed in a mare with aggressive, stallion like behavior and a history of infertility. She was found to have a high baseline testosterone concentration suggesting that testicular tissue was present, and ovarian-like structures examined by use of transrectal
Female mice are more susceptible to Taenia crassiceps (TC) infection than males. However, after a month parasite load increases massively in both genders reaching thousands of parasites per host. The possibility of hormonal changes in the infected mice was envisaged. Sex hormones levels were assayed
Developmental exposures to estrogenic chemicals possibly cause structural and functional abnormalities of reproductive organs in vertebrates. Bisphenol AF (BPAF), a bisphenol A (BPA) analogue, has been shown to have higher estrogenic activity than BPA, but little is known about the effects of BPAF
Juvenile three-spined stickleback (Gasterosteus aculeatus L.) is introduced as a unique model organism for both androgenic and oestrogenic endocrine action. Intersex is often used as an indicator for disruption of sexual differentiation in fish exposed to different kinds of effluents from human
An extended early-life stage test (based on OECD test guideline 210) was developed to allow the evaluation of a weak environmental oestrogen, 4-tert-pentyphenol (4TPP), on sexual differentiation and gonadal development. Fathead minnow (Pimephales promelas) embryos were exposed to three
Disorders of sexual development (DSD) include three main groups of patients: (1) The virilised 46,XX DSD essentially represented by congenital adrenal hyperplasia (CAH) ; (2) The undervirilised 46,XY DSD essentially represented by hypospadias; and (3) the chromosomic jigsaws essentially represented
Gonadal differentiation in two local populations - Hamakita and Hiroshima - of the Japanese wrinkled frog (Rana rugosa) was examined from hatching to the end of metamorphosis. The Hamakita male has X and Y chromosomes distinguishable morphologically from each other, while X and Y chromosomes in the
The androgen insensitivity syndrome (AIS) formerly known as testicular feminization is transmitted on a recessive X-linked. Its diagnosis is usually made at puberty if primary amenorrhea is present because the external genitalia are female. We report the case of two sisters aged 30 and 18 years,
On the basis of own material (43 patients) the author presents surgical tactics towards the testes in patients with testicular forms of hermaphroditism depending on the form of the disease. The authors consider that in the syndrome of dysgenesia of the testes the latter should be removed from the
To elucidate the involvement of endogenous estrogen (estradiol-17beta; E2) and the decisive factor (somatic or germinal element) in the ovarian differentiation of tropical marine teleosts, the effect of the aromatase inhibitor (AI) fadrozole on gonadal sex differentiation in the golden rabbitfish
Introduction: Topicability of this problem is caused by well-spread of cryptorchism among children: from 2-3% at newborn boys in UK to 10-12% of newborn boys in the Post Soviet Union countries. Degenerative processes, occured in testicle could lead to the development of eunuchoidism, The study aimed at determining the usability of laparoscopic cryptorchidectomy in treating cases of simple cryptorchidism and neoplastic testes in dogs. The presence of one or both testes inside the peritoneal cavity was confirmed in this study by an ultrasonographic examination employing the use of
Runoff from lands fertilized with animal manure from concentrated animal feeding operations (CAFOs) is a source of hormones to surface water. In this study we tested the hypothesis that larval fathead minnows exposed to sex steroids singly or in a "typical" CAFO mixture during sex differentiation
BACKGROUND
The authors' experience of using laparoscopy in the management of 23 girls (mean age: 8.9 years; range: 3 months-15 years) with various adnexal pathologies over a 3-year period is reviewed.
METHODS
Of the 23 patients, seven were evaluated for congenital gonadal pathologies, 15 presented