Snake venoms from Angola: Intra-specific variations and immunogenicity

Area of Science:

• * Toxicology and Herpetology
• * Tropical Public Health
• * Immunology and Biochemistry

Background:

• * Snakebite envenoming is a major global health concern, classified as a Neglected Tropical Disease (NTD).
• * High morbidity and mortality rates are reported in South/Southeast Asia and Sub-Saharan Africa.
• * Angolan snake venoms remain under-researched, with no specific antivenoms available domestically.

Purpose of the Study:

• * To investigate the biochemical and immunogenic profiles of venoms from key Angolan snake species.
• * To assess potential variations between male and female snake venoms.
• * To understand the impact of geographic origin on venom characteristics.

Main Methods:

• * Venom samples were collected from Naja nigricollis, Bitis arietans, and Bitis gabonica during an extensive expedition across four Angolan provinces.
• * Biochemical assays were performed to analyze venom composition.
• * Immunogenic properties were evaluated to assess antigenicity.

Main Results:

• * Angolan snake venoms exhibit distinct immunogenic properties.
• * Significant intra-specific variations in venom characteristics were observed, influenced by snake gender and geographic origin.
• * Data highlights considerable differences even within the same snake species across different locations.

Conclusions:

• * Intra-species variability in snake venoms is a critical factor in Angola.
• * Developing effective antivenoms requires accounting for these variations to ensure broad neutralization of venom toxins.
• * Further research into geographic and gender-based venom differences is essential for public health interventions.