ketosteroid


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ketosteroid

[¦kēd·ō′stir‚ȯid]
(biochemistry)
One of a group of neutral steroids possessing keto substitution, which produces a characteristic red color with m-dinitrobenzene in an alkaline solution; these compounds are principally metabolites of adrenal cortical and gonadal steroids.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The action of ethanol on the hypothalamuspituitary-adrenal axis is shown through his functional activation [6; 9; 11], phenomenon that induces the hypersecretion of oxys ketosteroids and ACTH.
Pincus, "Circadian rhythm in the excretion of urinary ketosteroids by young men," Journal of Clinical Endocrinology & Metabolism, vol.
Endocrine control of female reproduction is governed by a variety of hormonal and neuronal factors that involve neuropeptide hormones, such as gonad-stimulating hormone (GSH) and vitellogenesis-inhibiting hormone (VIH); terpenoids, such as methyl farnesoate, a stimulator of vitellogenesis; ketosteroids, such as ecdysteroids; and finally sex steroids such as estradiol and progesterone (Huberman, 2000; Zapata et al., 2003).
In addition to its role in the biosynthesis of 3[beta]-Adiol from 5a-DHT, this nicotinamide adenine dinucleotide (NAD (+))-dependent enzyme catalyzes the conversion of pregnenolone, 17[alpha]-hydroxypregnenolone, DHEA, and androstenediol into their respective ketosteroids: progesterone, 17a-hydroxyprogesterone, androstenedione, and testosterone (Figure 1).