Gonads and adrenal glands are the primary organs for the production of steroid hormones in mammals. Steroid hormones play important roles in development and are essential for the maintenance of homeostasis during adult life. To supply sufficient amounts of hormones, gonads and adrenal glands maintain their functions by replenishment of steroidogenic cells. It has been hypothesized that stem/pro...

Androgens are necessary for normal male phenotype expression, including the initiation and maintenance of spermatogenesis. Many physiological actions of androgens are mediated by the androgen receptor (AR), a member of the nuclear receptor super family. In the present study focused to identify the expression of AR in the gonads and brain of Cirrhinus mrigala. The gene specific primers were used...

AIM To assess whether exogenous estradiol has any effect on migration of primordial germ cells (PGCs) in the chick. METHODS Fertilized eggs were treated with 17beta-estradiol (E(2)) (80 microg/egg) at stage X (day 0 of incubation), stages 8-10 (incubation 30 h) and 13-15 (incubation 55 h). Controls received vehicle (emulsion) only. Changes in PGC number were measured on different days accordi...

In mammals a single gene on the Y chromosome, Sry, controls testis formation. One of the earliest effects of Sry expression is the induction of somatic cell migration from the mesonephros into the XY gonad. Here we show that mesonephric cells are required for cord formation and male-specific gene expression in XY gonads in a stage-specific manner. Culturing XX gonads with an XY gonad at their s...

A 10-month-old male infant presented with bilateral inguinal hernia and left un-descended testis. During right herniotomy, both gonads were found on same side with mullerian duct structures. On naked eye examination, both gonads were normal looking. Excision of mullerian duct remnant and fixation of ectopic testis was made. Histopathological examination revealed that gonads were testicles. Pres...

Ovotesticular disorder of sex development (ovotesticular DSD) is defined as the presence of testicular and ovarian tissue in the same individual. Both external and internal genitalia of patients with ovotesticular DSD display a spectrum of phenotypes. Most children present with ambiguous genitalia in combination with unilateral or bilateral undescended gonads. We experienced two late-diagnosed ...

The materials on the study of content heavy metals and organochlorine pesticides in fish are presented. It has been established that level is influenced by territorial location pond production. Therefore, lead, cadmium mercury liver gonads carp was higher than permissible values for growing ponds located city limits near highways. DDT HCH were detected organs territories farming farms. Residual...

Wnt4(-/-) XX gonads display features normally associated with testis differentiation, suggesting that WNT4 actively represses elements of the male pathway during ovarian development. Here, we show that follistatin (Fst), which encodes a TGFbeta superfamily binding protein, is a downstream component of Wnt4 signaling. Fst inhibits formation of the XY-specific coelomic vessel in XX gonads. In add...