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Published on: February 7, 2018
Oxidative stress in phenylketonuric patients
C R Vargas1, M Wajner, A Sitta
1Programa de Pós-Graduação em Ciências Biológicas:Bioquímica, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil. crvargas@hcpa.ufrgs.br
Phenylketonuria (PKU), a common amino acid metabolism disorder, may involve oxidative stress. Antioxidant defenses may be reduced in PKU patients, suggesting antioxidants could aid treatment.
Area of Science:
- Biochemistry
- Metabolic Disorders
- Neuroscience
Background:
- Phenylketonuria (PKU) is the most prevalent disorder of amino acid metabolism.
- Untreated PKU leads to mental retardation, with unclear underlying pathophysiology.
- Oxidative stress is increasingly implicated in PKU pathogenesis.
Purpose of the Study:
- To discuss the role of oxidative stress in phenylketonuria.
- To explore the potential of antioxidant therapies for PKU management.
Main Methods:
- Literature review and synthesis of existing studies on PKU and oxidative stress.
- Analysis of biochemical markers related to antioxidant defenses and oxidative damage.
Main Results:
- Studies indicate reduced antioxidant defenses in PKU patients.
- Dietary restriction in PKU may limit intake of antioxidant nutrients.
- Increased oxidative damage to biomolecules is observed, linked to reactive species formation.
Conclusions:
- Oxidative stress is a significant factor in phenylketonuria.
- Reduced antioxidant capacity and increased oxidative damage are key features.
- Antioxidants represent a potential adjuvant therapy for phenylketonuria.
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