Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «Z»:
Zinc deficiency: Lack of zinc in the body.
According to the National Academy
of Sciences, the Recommended Dietary Allowances of zinc are 12
milligrams per day for women and 10 milligrams per day for
men. Food sources of zinc include meat including liver, eggs, seafood,
nuts and cereal.
Zinc deficiency dermatitis and diarrhea
Zinc deficiency dermatitis and diarrhea: Among the
consequences of zinc deficiency, dermatitis (skin inflammation) and
diarrhea are particularly prominent features.
A genetic disease called acrodermatitis enteropathica in which
there is impaired zinc uptake from the intestine is, in fact,
Zinc excess: Too much zinc can
irritation (upset stomach), interfere with copper absorption and cause copper deficiency, and (like too
little zinc) cause immune deficiency. According to the National
Academy of Sciences, the Recommended Dietary Allowances of zinc
are 12 millig...
Zinc finger: A finger-shaped fold in a protein that permits it to interact with DNA and RNA. The fold is created by the binding of specific amino acids in the protein to a zinc atom. Zinc-finger proteins regulate the expression of genes as well as nucleic acid recognition, reverse transcription and ...
Zinc finger protein 9
Zinc finger protein 9: See: ZNF9....
Zinc ointment: A topical preparation containing
zinc that is applied to protect the skin from irritation or
sunburn. Zinc ointment is often the basis for commercial
preparations for preventing diaper rash. It should not be
used on skin that is already broken or irritated,
Zinc oxide: A form of zinc that has antispasmodic
Zinc sulfate: A form of zinc that can be
administered in eye drops. It is used in some types of eye
Zinc-finger protein: See: Zinc finger....
Zinsser disease: Also called Brill-Zinsser
disease, recrudescence of epidemic typhus years after the initial
attack. The agent that causes epidemic typhus (Rickettsia prowazekii)
remains viable for many years and then when host defenses are down,
it is reactivated causing recurrent typhus. The di...
ZIP code, protein
ZIP code, protein: An informal name for a molecular cell biology system of signals or "address tags" that guide the movement of a protein within a cell. In more technical terms, protein ZIP codes* are molecular signals that direct the protein from the endoplasmic reticulum, where it is assembled, to...
ZNF9: A gene that encodes a protein called zinc finger protein 9. An inherited mutation in ZNF9 causes type 2 myotonic dystrophy. One region of the ZNF9 gene has a particular 4-base-pair sequence, CCTG, that is normally repeated a few times. (Base pairs are the building blocks of DNA.) This region i...
Zoll: See: Zoll, Paul M.....
Zoll, Paul M.
Zoll, Paul M.: American cardiologist (1911-1999) and pioneer in the development of the cardiac monitor, pacemaker and defibrillator....
Zollinger-Ellison syndrome: A rare disorder caused by a
tumor called a gastrinoma, most often occurring in the pancreas. The
tumor secretes the hormone gastrin, which causes increased production
of gastric acid leading to severe recurrent ulcers of the esophagus,
stomach, and the upper portions ...