introduction: anabolic – androgenic steroids (aas) are used at high doses by athletes for improving athletic ability, muscle mass and physical appearance. unfortunately, the abuse of these agents has been significantly increased. it has been established that exercise and high doses of aas may influence the hypothalamic-pituitary-gonadal axis, which can in turn affect testicular apoptosis and ma...

Objective(s): Bone tissue engineering is aimed at the fabrication of bone graft to ameliorate bone defects without using autografts or allografts. Materials and Methods: In the present study, the coprecipitation method was used to prepare hydroxyapatite (HA) nanoparticles containing nandrolone. To do so, 12.5, 25, and 50 mg of nandrolone were loaded into poly(lactic acid) (PLA)/nano-HA, a...

conclusions chronic administration of high doses of nd can alter serum fsh, lh and testosterone and hematological parameters in male rats. results serum testosterone, lh, fsh, weight gain, food and water intake in group t were significantly decreased compared to other groups (p < 0.05). in addition erythrocyte, leucocytes, hemoglobin and hematocrit in group t were significantly increased compar...

Introduction: Anabolic – androgenic steroids (AAS) are used at high doses by athletes for improving athletic ability, muscle mass and physical appearance. Unfortunately, the abuse of these agents has been significantly increased. It has been established that exercise and high doses of AAS may influence the hypothalamic-pituitary-gonadal axis, which can in turn affect testicular apoptosis and m...

The South China Sea is one of the most important fishing grounds in China and is also a traditional fishing ground. In order to determine the primary productivity products suitable for various traditional fishing areas, this paper is based on three models of VGPM, Eppley-VGPM and CbPM, we estimate the primary and the average monthly data of marine primary productivity in 8 days, a detailed anal...

Changes in the number and size of oocytes can lead to fertilization problems. The present study aimed to evaluate the number, volume, and surface area of oocytes in healthy as well as nandrolone decanoate-treated (ND) mice using stereological methods. Five control mice received vehicle, and five ND-treated mice received ND. Using the 'isotropic Cavalieri' design', the ovary was sectioned. The v...