Screening of antimicrobial activity in venom: Exploring key parameters.

Area of Science:

• Bioprospecting
• Antimicrobial Discovery
• Pharmacology

Background:

• Antibiotic resistance is a critical global health threat, necessitating novel antimicrobial agents.
• Animal venoms are increasingly recognized as rich sources of bioactive compounds with therapeutic potential.

Purpose of the Study:

• To evaluate screening methodologies for identifying antimicrobial activities in venoms.
• To explore the influence of experimental conditions on antimicrobial efficacy detection.
• To identify novel antimicrobial molecules from venoms using High-Performance Liquid Chromatography (HPLC).

Main Methods:

• Screening of 185 venoms against Gram-positive and Gram-negative bacteria (e.g., E. coli, S. aureus).
• Utilizing microdilution and radial diffusion assays under varying conditions (venom concentration, culture media).
• Employing HPLC for the purification of potential antimicrobial compounds from venoms.

Main Results:

• Antimicrobial activity was detected in several venoms, including Bitis arietans, Naja nubiae, Bothrops lanceolatus, and various scorpion and beetle venoms.
• The efficacy of venom antimicrobial activity was significantly influenced by venom concentration, detection method, and culture medium.
• HPLC successfully isolated fractions with antimicrobial properties from the venoms.

Conclusions:

• Venoms represent a valuable resource for discovering new antimicrobial compounds to address the challenge of antibiotic resistance.
• Standardized screening protocols are crucial for accurately assessing the antimicrobial potential of venoms.
• This research provides a foundation for further investigation into venom-derived antimicrobials.