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In a previous study in rats we have shown that castration prior to weekly administration of N-nitrosobis(2-oxopropyl)amine (BOP) prevents induction of nasal and paranasal cavity (NPNC) tumors, indicating androgen dependency of these neoplasms. To investigate the possible inhibitory effect of
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Cytochrome P450 aromatase (AROM) catalyzes the biosynthesis of estrogen from androgen. Previously crystal structures of human AROM in complex with the substrate androstenedione, and inhibitors exemestane, as well as the newly designed steroidal compounds, have been reported. Here we report the first
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To study whether there is a difference in the prevalence of non-cavity-distorting uterine fibroids between infertile patients with polycystic ovary syndrome (PCOS) and those with unexplained infertility (UI).A secondary analysis of data from three
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Benign prostatic hyperplasia (BPH) is one of the leading causes of male reproductive disorders. Therapeutic agents currently in use have severe side effects; therefore, alternative drugs that exhibit improved therapeutic activity without side effects are required. The present study investigated the
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The serum and intratesticular testosterone concentration (ITC) after testosterone administration in the tunica vaginalis (TV) sac compared to parenteral administration was studied in 20 dogs that were rendered hypogonadal by gonadotropin-releasing hormone antagonist ('Nal-Glu' GnRH antagonist) in a
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The abdominal type of cryptorchism was modeled on random-bred albino rats by replacing both testes from the scrotum into the abdominal cavity for 3 weeks; thereupon they were manipulated into the scrotum. In control rats, no additional surgery was performed. In experimental rats, the testicular
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Medullary bone is a unique tissue in the long bones cavities of lay hens, and plays an important role as a calcium reservoir for egg-shell formation. Medullary bone formation requires the synergistic action of estrogen and androgen on osteoblasts during the early stage of sexual maturity. The
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In a previous paper (C. André et al., submitted to J. Chromatogr. B) a mathematical model based on the Langmuir theory was developed to visualize the competition effect between testosterone and deshydroepiandrosterone (DHEA) for their identical human serum albumin (HSA) binding cavity. In this work,
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The effects of testosterone administration on testicular inhibin content and histology were studied in bilaterally cryptorchid rats, in which a marked decrease in testicular inhibin content had been observed. Mature male Wistar rats weighing approximately 300 g were made bilaterally cryptorchid by
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BACKGROUND
Mammalian 3 alpha-hydroxysteroid dehydrogenases (3 alpha-HSDs) modulate the activities of steroid hormones by reversibly reducing their C3 ketone groups. In steroid target tissues, 3 alpha-HSDs act on 5 alpha-dihydrotestosterone, a potent male sex hormone (androgen) implicated in benign
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BACKGROUND
Implantable testosterone pellets were approved by the Food and Drug Administration in 1972 for the treatment of testosterone deficiency syndrome (TDS). Clinical use of this testosterone delivery modality has been limited until its recent reintroduction (Testopel(®) , Slate
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A three-dimensional (3D) molecular model of the antigen-combining site of a bovine anti-testosterone monoclonal antibody has been constructed. In the model, the CDRs, and a single heavy chain framework region residue (Trp47), associate to form a hydrophobic cavity large enough to accommodate a
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Bir belirti veya hastalık yazın ve yardımcı olabilecek bitkiler hakkında bilgi edinin, bir bitki yazın ve karşı kullanıldığı hastalıkları ve semptomları görün. * Tüm bilgiler yayınlanmış bilimsel araştırmalara dayanmaktadır