نتایج جستجو برای: testicular axis
تعداد نتایج: 123210 فیلتر نتایج به سال:
In early fetal development, the testis secretes - independent of pituitary gonadotropins - androgens and anti-Müllerian hormone (AMH) that are essential for male sex differentiation. In the second half of fetal life, the hypothalamic-pituitary axis gains control of testicular hormone secretion. Follicle-stimulating hormone (FSH) controls Sertoli cell proliferation, responsible for testis volume...
abstract diabetes mellitus (dm) is one of the greatest public health threats in modern societies. although during a few years it was suggested that dm had no significant effect in male reproductive function, this view has been challenged in recent years. from a clinical perspective, the evaluation of semen parameters, as well as spermatozoa deoxyribonucleic acid (dna) integrity, are often studi...
BACKGROUND Testicular adrenal rest tumors are a benign condition characterized by the presence of remnants of adrenal tissue within the testes that can lead to infertility. Testicular microlithiasis are calculus deposits within the seminiferous tubules. Both are described in congenital adrenal hyperplasia. OBJECTIVES Describe the frequency of testicular adrenal rest tumors and testicular micr...
Background and Aim: Methylphenidate (MPH) is one of the commonly used drugs in the treatment of hyperactivity disorder in children. The use of MPH has been associated with increased activity of the central nervous system so may lead to the abuse of this compound. Nicotine is one of the compounds available in a wide range of people in various forms. The negative effects of nicotine on pituitary-...
This study aims to provide the means for testicular dose estimation from radiotherapy for rectal cancer. Rectal irradiation was simulated on a humanoid phantom using a 6 MV photon beam. The effect of field size, distance from irradiated area, wedge introduction into lateral beams, tissue thickness along the beam axis and use of gonad shields on the testicular dose was examined. Testicular dose ...
Precocious puberty is defined as the appearance of clinical signs before age 8 years in girls and 9 boys. The central origin due to a premature activation hypothalamic-pituitary-gonadal axis from which tumor pathology must be eliminated each case. It distinguished early peripheral independent hypothalamic-pituitary stimulation adrenal or gonadal origin. In boys, precocious most often there high...
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