Ornithine
An amino acid that is not found in protein but is important in the formation of urea and the disposal of excess nitrogen. Ornithine is produced when urea is split off from arginine and ornithine is itself converted into citrulline.
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A rare metabolic disorder, OTC is one of the urea-cycle disorders. The urea cycle is a series of five liver enzymes that help rid the body of ammonia, a toxic breakdown product of protein. When one of these enzymes is missing or deficient, ammonia accumulates in the blood and travels to the brain, causing coma, […]
- Ornithophobia
An abnormal and persistent fear of birds. Sufferers from ornithophobia experience undue anxiety about encountering and even being attacked by birds although they may realize their fears are quite irrational. Ornithophobia was epitomized in a 1963 film scripted by the novelist Daphne Du Maurier and the detective story writer Evan Hunter and directed by the […]
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Botox) have been used as a treatment.
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The part of the throat that is at the back of the mouth, in contrast to the nasopharynx (the part of the throat that is behind the nose).
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A disease that has not been ?adopted? by the pharmaceutical industry because it provides little financial incentive for the private sector to make and market new medications to treat or prevent it. An orphan disease may be a rare disease (according to US criteria, a disease that affects fewer than 200,000 people) or a common […]