steroid hormones


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ster·oid hor·mones

those hormones possessing the steroid ring system, for example, androgens, estrogens, adrenocortical hormones.

ster·oid hor·mones

(ster'oyd hor'mōnz)
Those hormones possessing the steroid ring system (e.g., androgens, estrogens, adrenocortical hormones).

steroid hormones

those secreted by the adrenal cortex, the testis and the ovary, all made from cholesterol as precursor. A variety of synthetic steroids is used in treatment mainly of rheumatic conditions or of relevant hormonal disorders; others are marketed for body-building. See also aldosterone, anabolic steroids, androgens, glucocorticoids, hormones.

ster·oid hor·mones

(ster'oyd hor'mōnz)
Those hormones possessing the steroid ring system (e.g., androgens, estrogens, adrenocortical hormones).

steroid

a complex molecule containing carbon atoms in four interlocking rings forming a hydrogenated cyclopentophenanthrene-ring system; three of the rings contain six carbon atoms each and the fourth contains five.
Steroid derivatives are important in body chemistry. Among them are the male and female sex hormones, such as testosterone and estrogen, and the hormones of the cortices of the adrenal glands, including cortisone. Vitamins of the D group are steroids involved in calcium metabolism. The cardiac glycosides, a group of compounds derived from certain plants, are partly steroids. Sterols, including cholesterol, are steroids. Cholesterol is the main building block of steroid hormones in the body; it is also converted into bile salts by the liver.

steroid I
alfaxalone.
steroid II
alfadolone.
steroid diabetes
see steroid diabetes mellitus.
References in periodicals archive ?
In other words, how the cells in the adrenal glands, testes, ovaries and placenta make different steroid hormones via chains of biochemical events that all start with cholesterol and what can go wrong.
This study represents the first attempt at a detailed histological identification of gamete developmental stages and characterization of plasma sex steroid hormones during the maturation cycle of southern hake (Merluccius australis).
FA is a glucocorticoid, a type of steroid hormone that takes its name from its steroid structure.
A sensitive and rapid mass spectrometric method for the simultaneous measurement of eight steroid hormones and CALIPER pediatric reference intervals.
The protein binds to membrane receptors on many cell types including cells that produce steroid hormones.
Bert O'Malley of Baylor College of Medicine in Houston argues that it's more likely that the ancestral receptor was unresponsive to steroid hormones and only later came under the influence of estrogen in certain animals.
Steroid hormones are what we tend to think of when we discuss "sex hormones.
It has been shown that the receptors for other steroid hormones have the ability to turn genes on and off only when linked with another receptor, which in vertebrates is known to be the receptor for retinoic acid, a form of Vitamin A.
Synthetic steroids mimic the actions of natural steroid hormones like testosterone.
In 1956 he showed that the molecule of ACTH (adrenocorticotrophic hormone, which stimulated the production of steroid hormones like cortisone by the adrenal cortex) was made up of 39 amino acids in a specific order.
The laboratory also determines the effects of various chemical contaminants upon reproduction and stress in fish species such as Atlantic salmon (Salmo salar) and Atlantic cod (Gadus morhua) through studies on blood plasma levels of steroid hormones (pg-m[L.
NASDAQ:HEPH), the world leader in the development of a new class of small molecule compounds based on endogenous adrenal steroid hormones, today announced that it will present at the 2009 BIO CEO and Investor Conference in New York City, at 12:00 p.