Proctosigmoidoscopy
An examination of the rectum and the lower part of the colon, using a thin, lighted instrument called a sigmoidoscope.
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- 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.
- Progesterone receptor test
A lab test that is used to determine whether breast cancer cells have progesterone receptors. If the cells have progesterone receptors, they may depend on progesterone for growth and usually respond to hormone therapy. Breast cancer cells that do not have progesterone receptors do not need the hormone progesterone to grow and usually do not […]