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Adequacy of nitisinone for the management of alkaptonuria
Khawar Abbas1, Jawad Basit2, Mohammad Ebad Ur Rehman2
1Department of Surgery, Rawalpindi Medical University, Rawalpindi, Pakistan.
Abstract:
Alkaptonuria is a rare hereditary disease with a defective enzyme that results in increased homogentisic acid levels in the body. Homogentisic acid accumulates in multiple body parts and initializes tissue damage. Clinical manifestations such as pigmentation of the skin areas and joint destruction result in ochronosis. Nitisinone decreases serum and urinary homogentisic acid levels, improving morbidity by preventing and slowing the progression of alkaptonuria. Nitisinone-induced hypertyrosinemia causes keratopathy and mental ill effects, which can be managed by diet restriction and regular check-ups. A personalized approach is required for treatment by nitisinone. Low-dose oral nitisinone is associated with overall good results and a better safety profile.
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