Plasma amino acid patterns in alcoholic pellagra patients

Area of Science:

• Biochemistry
• Clinical Nutrition
• Metabolic Disorders

Background:

• Pellagra, a deficiency disease, is often associated with alcoholism and malnutrition.
• Altered plasma amino acid profiles can indicate nutritional status and disease severity.
• Understanding these biochemical changes is crucial for effective patient management.

Purpose of the Study:

• To compare plasma amino acid concentrations in alcoholic patients with pellagra versus healthy controls.
• To investigate the impact of pellagra and alcoholism on amino acid metabolism.
• To inform the interpretation of plasma amino acid levels in clinical settings.

Main Methods:

• Plasma amino acid levels were measured in 33 male alcoholic patients diagnosed with pellagra and 17 healthy male subjects.
• Pellagra diagnosis was confirmed by clinical presentation and low urinary excretion of N'methylnicotinamide and N'methyl-2-pyridone-5-carboxamide.
• Statistical analysis was performed to compare amino acid concentrations between the two groups.

Main Results:

• Pellagrins exhibited significantly lower plasma concentrations of tryptophan, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, valine, alanine, arginine, and tyrosine compared to controls.
• Glutamic acid levels were significantly higher in pellagrins.
• Body mass index, creatinine/high index, and serum albumin indicated general malnutrition in the alcoholic pellagra group.

Conclusions:

• Pellagra is a significant factor influencing plasma amino acid profiles in alcoholic patients.
• The observed amino acid imbalances suggest a state of malnutrition beyond niacin deficiency.
• Plasma amino acid analysis for clinical assessment in pellagra patients requires careful consideration of these specific alterations.