Proctology
A medical specialty that deals with disorders of the rectum and anus.
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- Proctosigmoidoscopy
An examination of the rectum and the lower part of the colon, using a thin, lighted instrument called a sigmoidoscope.
- Prodrug
A precursor (forerunner) of a drug. A prodrug must undergo chemical conversion by metabolic processes before becoming an active pharmacological agent. For example, sulfasalazine is a prodrug. It is not active in its ingested form. It has to be broken down by bacteria in the colon into two products — 5-aminosalicylic acid (5ASA) and sulfapyridine […]
- Product, gene
The RNA or protein that results from the expression of a gene. The amount of gene product is a measure of the degree of gene activity.
- Progeria
Emery-Dreifuss muscular dystrophy type 2, limb girdle muscular dystrophy type 1B, Charcot-Marie-Tooth disorder type 2B1, the Dunnigan type of familial partial lipodystrophy, mandibuloacral dysplasia and a familial form of dilated cardiomyopathy. There currently are no diagnostic tests or treatments for progeria which remains relentlessly progressive and fatal. Although Hutchinson (1886) and Guilford (1904) did describe […]
- Progesterone
A female hormone, the principal hormone that prepares the uterus to receive and sustain fertilized eggs.