Reaction in leprosy: acute phase reactant response during and after remission

Area of Science:

• Immunology
• Clinical Medicine
• Biochemistry

Background:

• Leprosy reactions, including type 1 (Lepra) and type 2 (erythema nodosum leprosum [ENL]), significantly impact patient health and disease management.
• Monitoring these reactions is crucial for effective treatment and preventing long-term complications.
• Biomarkers such as alpha-1-antitrypsin (A1A) and C-reactive protein (CRP) are potential indicators of inflammatory processes.

Purpose of the Study:

• To investigate the correlation between serum levels of alpha-1-antitrypsin (A1A) and C-reactive protein (CRP) and the clinical status of leprosy reactions.
• To compare the utility of A1A and CRP in monitoring type 1 and type 2 leprosy reactions.
• To assess changes in A1A and CRP levels during active reactions and clinical remission.

Main Methods:

• Sera from 25 leprosy patients experiencing type 1 or type 2 reactions were collected during active phases and after remission.
• A1A and CRP levels were quantified in patient sera and compared to those from healthy controls and leprosy patients without reactions.
• Statistical analysis was performed to evaluate the correlation between biomarker levels and reaction status.

Main Results:

• A1A levels showed a better correlation with changes in type 1 leprosy reactions.
• CRP levels correlated well with alterations in type 2 reactions (erythema nodosum leprosum).
• CRP demonstrated superior efficacy compared to A1A in monitoring the course of type 2 reactions.

Conclusions:

• A1A and CRP serve as valuable biomarkers for monitoring different types of leprosy reactions.
• CRP is a more effective marker than A1A for tracking the progression and management of erythema nodosum leprosum.
• These findings support the use of A1A and CRP assays in clinical practice for leprosy reaction management.