Determination of sex and maturity stage of great sturgeon ( Huso huso) using steroid sex hormones profiles, histology and laparoscopic images of gonads

2019 ◽  
Vol 35 (5) ◽  
pp. 1084-1093
Author(s):  
Rezvanollah Kazemi ◽  
Mahtab Yarmohammadi ◽  
Ali Hallajian ◽  
Jalil Jalilpour ◽  
Hossein Mohammadi Parashkoh
Keyword(s):  
Sex Hormones ◽  
Maturity Stage ◽  
Huso Huso ◽  
Great Sturgeon ◽  
Steroid Sex Hormones

Spectrophotometric determination of some steroid sex-hormones

1976 ◽  
Vol 281 (5) ◽  
pp. 371-377 ◽  
Author(s):  
Saad S. M. Hassan ◽  
M. M. Abdel Fattah ◽  
M. T. M. Zaki
Keyword(s):  
Sex Hormones ◽  
Spectrophotometric Determination ◽  
Steroid Sex Hormones

scholarly journals Sample Preparation and Liquid Chromatography Mass Spectrometry Analysis of Alkylphenolic Compounds and Steroid Sex Hormones in Sediments

2002 ◽  
Vol 2 ◽  
pp. 1610-1616 ◽  
Author(s):  
Mira Petrovia ◽  
Damia Barcela
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Sex Hormones ◽  
Degradation Products ◽  
Mass Spectrometry Analysis ◽  
Liquid Chromatography Mass Spectrometry ◽  
Spectrometry Analysis ◽  
Chromatography Mass Spectrometry ◽  
Steroid Sex Hormones

A new methodology, based on the use of accelerated solvent extraction (ASE) and highly selective cleanup using restricted access material (RAM) on-line coupled with liquid chromatography–mass spectrometry (LC–MS), is presented for the simultaneous and unequivocal determination of alkylphenol ethoxylates (APEOs), their degradation products and halogenated derivatives, and steroid sex hormones in sediment samples. Using the integrated RAM–LC–MS system, the simultaneous determination of alkylphenolic compounds and sex hormones was achieved, yielding recoveries higher than 60% and producing low MS background noise.

Analytical methods for the determination of selected steroid sex hormones and corticosteriods in wastewater

2007 ◽  
Vol 387 (6) ◽  
pp. 2143-2151 ◽  
Author(s):  
Emmanuelle Vulliet ◽  
Jean-Baptiste Baugros ◽  
Marie-Magdeleine Flament-Waton ◽  
Marie-Florence Grenier-Loustalot
Keyword(s):  
Sex Hormones ◽  
Analytical Methods ◽  
Steroid Sex Hormones

THE EFFECT OF GONADECTOMY ON THE RESPONSE OF THE PITUITARY I. C. S. H.-CONTENT TO STEROID SEX HORMONES

1960 ◽  
Vol XXXV (II) ◽  
pp. 245-252 ◽  
Author(s):  
G. P. van Rees ◽  
F. J. A. Paesi
Keyword(s):  
Sex Hormones ◽  
Sex Steroids ◽  
Low Dose ◽  
Testosterone Propionate ◽  
Preceding Paper ◽  
Direct Consequence ◽  
Two Factors ◽  
Reflex Stimulation ◽  
Steroid Sex Hormones ◽  
Stimulation Of

ABSTRACT In the experiments reported in this paper the hypothesis that the decrease in the pituitary I. C. S. H.-content, which occurs after administration of steroid sex hormones in gonadectomized animals, is counteracted by a reflex stimulation of the hypophysis initiated by the operation has been investigated. If treatment with a low dose of testosterone propionate (100 μg) was started immediately after castration, the resulting decrease in the pituitary I. C. S. H.-content became more marked if the reflex stimulation of the hypophysis had been prevented. If, however, two months were allowed to elapse before the beginning of treatment, the presence or absence of this reflex was no longer of importance for the effect of testosterone propionate on the pituitary I. C. S. H.-content. And yet, in this case too, the decrease in the pituitary I. C. S. H.-content by testosterone propionate was less than in intact animals (see preceding paper). Hence this decrease appears to be counteracted by two factors: one rapidly occurring and short lasting, resulting from a reflex elicited by gonadectomy; the other gradually increasing in potency and possibly a direct consequence of the continued absence of pituitary inhibiting sex steroids.

Sign in / Sign up

Export Citation Format

Share Document