title: [Serum steroid hormones in female Russian sturgeon (Acipenser gueldenstaedtii Br.) with normal oocyte maturation and with gonadal function disorders after hormonal stimulation].
abstract: Blood serum cortisol, testosterone, and 11-ketotestosterone levels were determined by ELISA methods in female Russian sturgeon after hormonal stimulation for induction of ovulation. All females were divided into 5 groups depending on their initial reproductive status and response to hormonal stimulation; 1) normal ovulation, 2) ovulation followed by release of non-viable eggs, 3) normal state of ovary without ovulation, 4) lack of ovulation, early stage of oocyte resorption, 5) lack of ovulation, advanced stage of oocyte resorption. Cortisol levels in all five groups did not differed significantly. Testosterone levels were low (15-24 ng/ml) in females after ovulation and in females without response to hormonal stimulation because of early stage of oocyte resorption. Non-matured females with normal state of oocytes had significantly higher testosterone levels--82 +/- 16 ng/ml. Non-matured females with advanced stage of resorption were subdivided into 2 subgroups--with low (approximately 7 ng/ml) and high (> 100 ng/ml) levels of serum testosterone. 11-ketotestosterone levels were similar in all investigated groups of sturgeon.
authors.affiliation: St. Petersburg State University, 199034, St. Petersburg, 7/9 Universitetskaya Nab., Russia.
authors.forename: A B
authors.initials: AB
authors.lastname: Gruslova
authors.forename: L V
authors.initials: LV
authors.lastname: Baiunova
authors.forename: I V
authors.initials: IV
authors.lastname: Trenkler
mesh_terms: D000818:Animals; D000858:Anovulation / Q000097:blood* / Q000473:pathology; D005260:Female; D005399:Fishes / Q000097:blood* / Q000254:growth & development; D012739:Gonadal Steroid Hormones / Q000097:blood*; D007987:Gonadotropin-Releasing Hormone / Q000494:pharmacology; D006854:Hydrocortisone / Q000097:blood; D009865:Oocytes / Q000187:drug effects / Q000254:growth & development* / Q000473:pathology; D010060:Ovulation / Q000097:blood* / Q000187:drug effects; D010062:Ovulation Induction; D012426:Russia
chemical_list: D012739:Gonadal Steroid Hormones; D007987:Gonadotropin-Releasing Hormone; D006854:Hydrocortisone