Oxidative Stress, Mitochondrial Dysfunction, and Premature Ageing in Severe Acute Malnutrition in Under-Five Children

Area of Science:

• Biochemistry
• Pediatrics
• Molecular Biology

Background:

• Severe acute malnutrition (SAM) is a critical health issue in children globally.
• Understanding the underlying molecular mechanisms of SAM, including oxidative stress and mitochondrial dysfunction, is crucial for effective intervention.
• The potential link between SAM, cellular damage, and premature ageing requires further investigation.

Purpose of the Study:

• To investigate oxidative stress, mitochondrial dysfunction, and premature ageing in children diagnosed with severe acute malnutrition (SAM).
• To compare key biomarkers between SAM children and healthy controls.

Main Methods:

• A cross-sectional study involving 40 children (1 month to 5 years) with SAM and 40 age/sex-matched controls.
• Assessment of oxidative stress via total antioxidant status (TAOS).
• Evaluation of mitochondrial dysfunction using mitochondrial DNA (mtDNA) content and premature ageing through telomere length (TL) measurements.

Main Results:

• Children with SAM exhibited significantly elevated oxidative stress, indicated by lower TAOS levels compared to controls (p < 0.001).
• Mitochondrial DNA (mtDNA) content was significantly higher in children with SAM, suggesting mitochondrial dysfunction (p < 0.001).
• No significant difference in telomere length (TL) was observed between SAM children and controls (p = 0.747).

Conclusions:

• Children with SAM experience significantly increased oxidative stress.
• The observed increase in oxidative stress may contribute to mitochondrial dysfunction in SAM.
• This study found no evidence of premature ageing, as indicated by telomere length, in children with SAM.