Systemic cytokine response in children bitten by snakes in Costa Rica

Area of Science:

• Immunology
• Toxicology
• Pediatrics

Background:

• Investigates host response to Viperidae snake venom in Costa Rican pediatric patients.
• Focuses on the release of key cytokines: IL-1, IL-6, IL-8, TNF-alpha, MIP-1beta, and RANTES.

Purpose of the Study:

• To characterize the cytokine release profile following Viperidae snakebites in children.
• To correlate cytokine levels with clinical presentation and outcomes.

Main Methods:

• Blood samples collected from pediatric patients within 24 hours of snakebite, with serial sampling up to 7 days.
• Cytokine levels (IL-1, IL-8, TNF-alpha, MIP-1beta, RANTES, IL-6) measured using ELISAs and bioassays.
• Patients received antibiotic treatment (gentamicin plus clindamycin or penicillin).

Main Results:

• Elevated serum concentrations of IL-6 and IL-8 observed in most patients, peaking within 12-24 hours and normalizing by 72 hours.
• TNF-alpha peaked at 12 hours; MIP-1beta and RANTES showed variable elevations.
• Patients with higher cytokine levels more frequently required early fasciotomy (<24 hours).

Conclusions:

• Bothrops sp. snake venoms induce an acute inflammatory response similar to trauma, characterized by pro-inflammatory cytokine release.
• Further understanding of the inflammatory cascade may inform novel therapeutic strategies for snakebite management.