Disorders of sex development (DSD) are congenital conditions characterized by atypical development of chromosomal, gonadal, and phenotypic sex. 46, XY DSD can result from disorders of testicular development or disorders of androgen synthesis/action. Prophylactic gonadectomy should be considered in patients with 46, XY DSD because of the increased risk of gonadal malignancy. We report two rare c...

Prophylactic gonadectomy has been recommended in complete androgen insensitivity syndrome (CAIS) because of an increased risk for the development of malignant germ cell tumors in the intra-abdominal gonads. No reliable screening parameters are available to detect early (pre-)malignant changes. Because the tumor risk before puberty is very low, the timing of gonadectomy has been postponed to all...

AIM To assess the effect of gonadectomy on brain derived neurotrophic factor (BDNF) expression in neuropathic pain. METHODS Using chronic constriction injury (CCI) model, we detected BDNF mRNA in dorsal root ganglion and protein content in spinal cord by reverse transcription polymerase chain reaction and enzyme-linked immunosorbent assay respectively. The time point we chose was post CCI ope...

BACKGROUND Swyer syndrome (46XY complete gonadal dysgenesis) is an uncommonly encountered condition in our population. Gonadectomy is recommended upon diagnosis due to a significant risk of malignant transformation of the dysgenetic gonads, typically to dysgerminoma. CASES We present 3 cases of women who underwent gonadectomy following a diagnosis of Swyer syndrome. Two of these patients had ...

Male mice that are pttg-null develop sexually dimorphic diabetes with hypoinsulinemia secondary to reduced postnatal-cell proliferation and an inability to expand islet cell mass with aging. We therefore examined the effects of sex-steroid manipulation on diabetes development in pttg-/- male mice. Surgical gonadectomy was followed by implantation of 90-day slow-release pellets releasing 17beta-...

Hydock DS, Lien C-Y, Schneider CM, Hayward R. Effects of voluntary wheel running on cardiac function and myosin heavy chain in chemically gonadectomized rats. Am J Physiol Heart Circ Physiol 293: H3254–H3264, 2007. First published September 28, 2007; doi:10.1152/ajpheart.00801.2007.—Reducing testosterone and estrogen levels with a luteinizing hormone-releasing hormone agonist such as Zoladex (i...

The modifying effect of partial hepatectomy and gonadectomy upon carcinogenesis in general and hepatocarcinogenesis in particular has been evaluated in 6-week-old C57BL/6J x C3HeB/FeJ F, mice. Ethylnitrosourea (60 ftg/g body weight) was administered once after sham hepatectomy or 48 hr following partial hepatectomy at which time DMA synthesis in the regenerating liver was 30-fold higher than in...

The hypothalamic suprachiasmatic nucleus (SCN) is the locus of a master clock that regulates circadian rhythms in physiology and behavior. Gonadectomy in male mice lengthens the period of circadian rhythms and increases the day-to-day variability of activity onset time. Both of these responses are rescued by the nonaromatizable androgen dihydrotestosterone. Androgen receptors (AR) are localized...

Surgical procedures lead to profound and sustained (up to 1-2 weeks) activation of the pituitary gland, resulting in changes in endocrine function. Questions remain on whether activation of the pituitary influences the threshold and development time-course of postoperative pain. To address these questions, we evaluated postoperative hypersensitivity in female and male rats with ablated pituitar...

Gonadectomy in adult male rats is known to impair performance on dopamine (DA)-dependent prefrontal cortical tasks and selectively dysregulate end points in the mesoprefrontal DA system including axon density. In this study, in vivo microdialysis and high-pressure liquid chromatography were used to determine whether short (4 day)- and/or long-term (28 day) gonadectomy and hormone replacement mi...