Suppression

(redirected from Appetite suppression)
Also found in: Dictionary, Thesaurus, Medical, Legal, Wikipedia.

suppression

[sə′presh·ən]
(computer science)
Removal or deletion usually of insignificant digits in a number, especially zero suppression.
Optional function in either on-line or off-line printing devices that permits them to ignore certain characters or groups of characters which may be transmitted through them.
(electronics)
Elimination of any component of an emission, as a particular frequency or group of frequencies in an audio-frequency of a radio-frequency signal.

Suppression

 

in genetics, a phenomenon that prevents the appearance of a character resulting from mutation and that causes partial or complete restoration of the normal phenotype.

Intragenic suppression is caused by a second (suppressor) mutation in the same gene in which the first (direct) mutation occurred. Intergenic suppression is caused by a second mutation in other genes that are located at a considerable distance from the suppressed gene. In intragenic suppression, a protein coded by a given gene can reacquire functional activity, although its original structure, in contrast to true reverse mutation, or reversion, is not restored. In intergenic suppression, the normal phenotype may be restored in some cases owing to mutations that permit other means of metabolism which do not require the functioning of the given gene. In other cases, the normal phenotype may be restored as a result of mutations that alter the process by which the genetic information of the mutant gene is realized.

The phenomenon of suppression, first discovered in 1920 by the American geneticist A. H. Sturtevant, is used to study the genetic code and other aspects of molecular genetics.

REFERENCE

Stent, G. Molekuliarnaia genetika. Moscow, 1974. Chapter 6. (Translated from English.)

I. I. TOLSTORUKOV

References in periodicals archive ?
has introduced Trim Again whey protein, which combines the weight loss benefits of whey protein with the appetite suppression and body fat reduction benefits of two popular herbal ingredients.
The slimming was so dramatic that the group suspected more than appetite suppression was involved.
We are combining years of scientific research on the hormone ghrelin, looking at its role with respect to appetite suppression, and combining it with an everyday type of embolization procedure that interventional radiologists routinely perform," states Kamal Morar, MD, one of the study's principal investigators.
In particular, pro-opiomelanocortin (POMC) neurons, which have been shown to play a key role in appetite suppression, reside in this region.
IF any of the commercially available Hoodia extracts demonstrated the remarkable appetite suppression effects of Phytopharm's patented Hoodia extract--a drop in calorie intake of over 33% within 2 weeks of using 1800 mg of the patent extract, twice daily--wouldn't we be seeing dramatic weight loss among our friends, family and colleagues?
Aware that rats show appetite suppression for a short time after strenuous exercise, Harry R.
The basis for the proprietary blend are several natural ingredients that have studies to support their role in appetite suppression.
Ghrelin levels dropped, indicating appetite suppression, but peptide YY levels did not change significantly.
In the area of appetite suppression, Suppressia will be launched in coordination with Lipid Nutrition, Channahon, IL.
But the most dramatic appetite suppression followed consumption of the drink sweetened with fructose (fruit sugar).