Iliescu R, Cucchiarelli VE, Yanes LL, Iles JW, Reckelhoff JF. Impact of androgen-induced oxidative stress on hypertension in male SHR. Am J Physiol Regul Integr Comp Physiol 292: R731–R735, 2007. First published July 20, 2006; doi:10.1152/ajpregu.00353.2006.—Men have higher blood pressure than women, and androgens and oxidative stress have been implicated as playing roles in this sexual dimorph...

CRITCHLOW, V., R. A. LIEBELT, M. BAR-SELA, W. MOUNTCASTLE, AND H. S. LIPSCOMB. Sex dijerence in resting pituitaryadrenal function in the rat. Am. J. Physiol. 205(5): 807-815. I g63.-Resting levels of plasma and adrenal corticosteroids, pituitary content of adrenocorticotropin, and circulating leukocytes were determined at intervals during controlled 24-hr light-dark cycles in intact, castrated,...

Glutathione content and the activity of glutathione reductase were examined in ventral prostate and chemically induced 11095 squamous-cell prostatic carcinoma in rats. Castration produced a significant reduction in the levels of reduced (GSH) and oxidized (GSSG) glutathione and glutathione reductase activity in the prostate. Replacement of testosterone (50 mg/kg) daily for 7 days to castrated a...

We investigated histochemically the expression of glycans in the mouse ventral prostate of the normal, castrated, castrated mice injected with testosterone (T) and castrated mice injected with dihydrotestosterone (DHT). The avidin-biotinperoxidase complex technique was used with eight biotinylated lectins, on paraffin sections. Remarkably, contrarily to T, the DHT found to restore all the glyca...

The involution of the rat ventral prostate gland after castration could be caused by primary changes in the vasculature. To explore the mechanisms, we studied the effects of castration and testosterone treatment on the vasculature in the ventral prostate in adult rats and mice. Androgen receptor expression, vascular morphology, and the expression of angiopoietin (ang) 1 and 2 and their receptor...

The development, growth, and function of the prostate gland depend on androgen stimulation. The primary androgen in prostate is 5α-dihydrotestosterone (DHT) which is synthesized from circulating testosterone (T) through the action of 5α-reductase (5α-R). Although 5α-R occurs as five isozymes, only 5α-R1 and 5α-R2 are physiologically involved in steroidogenesis. The endocrine disruptor bisphenol...

The activities of liver transfer RNA (tRNA) methyltransferases from control or ovariectomized female rats were found to be higher than those of control or castrated males. Administration of testosterone to ovariectomized females caused activity to decrease to the level of the males. Conversely, administration of estrogen to castrated males resulted in liver enzyme levels similar to those of the...

Recent reports have shown that stressful situations may affect the production of unconjugated pterins (neopterin and biopterin). The aim of the study was to investigate the effect of castration on neopterin and biopterin plasma concentrations in piglets, using 2 groups of 12 piglets allocated to castrated and uncastrated (control) groups. Pterin concentrations were determined by HPLC with fluor...