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.

Mentioned in

References in periodicals archive

Pincus, "Circadian rhythm in the excretion of urinary ketosteroids by young men," Journal of Clinical Endocrinology & Metabolism, vol.

Neuroendocrine immunoregulation in multiple sclerosis

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).

Effects of estradiol and progesterone on the reproduction of the freshwater crayfish Cherax albidus

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).

An Assessment of Testosterone and its Essential Metabolites for Prostate Cancer Risk

All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.