ketosteroid


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ketosteroid

 [ke″to-ste´roid]
a steroid having ketone groups on functional carbon atoms.
17-k's steroids found in normal urine and in excess in certain tumors, which have a ketone group on the 17th carbon atom, and include certain androgenic and adrenocortical hormones.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

ketosteroid

(kē′tō-stĕr′oid′, -stîr′-)
n.
A steroid, such as androsterone or estrone, that contains a ketone group.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

ketosteroid

A steroid hormone to which an oxygen molecule has been attached, especially at the 17th carbon atom (C-17). An oxosteroid. A 17-ketosteroid is a steroid with a C-O (carbonyl) group at C-17. 17-ketosteroids are excreted in the urine as breakdown products of ANDROGENS and are present in excess in adrenal and gonadal overactivity.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
References in periodicals archive ?
In this method, the enzyme 3-[alpha]--hydroxysteroid dehydrogenase converts bile acids to 3 ketosteroids and Thio-NADH.
Urinary 17-alpha ketosteroids are usually normal or slightly elevated (1, 2 and 4) in contrast to adrenal tumors.
A myriad of determinands caught his interest: magnesium, calcium, beryllium, gold, copper, iron, and zinc; phosphorous, chloride, and protein-bound iodine; creatinine, urea, bilirubin, proteins, estrogens, nucleic acids, ketosteroids, and haptoglobin; cholesterol, triglycerides, free fatty acids, and phospholipids; salicylates, barbiturates, thiobarbiturates, methotrexate, carbon monoxide, methanol, and ethanol; alkaline phosphatase, glucose-6-phosphatase, 5-'nucleotidase, cholinesterase, and creatine kinase.
Preparation of trimethylsilyl, triethylsilyl and tert-butyldimethylsilyl enol ethers from ketosteroids for investigations by gas-chromatography and mass-spectrometry.