Toxicological study of bee venom (Apis mellifera mellifera) from different regions of the province of Buenos Aires, Argentina.

This research study explored the toxicity levels and harmful effects of bee venom from various hives located across two regions in Buenos Aires, Argentina, both in vitro and in vivo, aimed to establish the varying properties of bee venom and their potential impacts.

Study Design and Focus

• The research focused on studying venom samples from different hives of the Apis mellifera mellifera species in the Buenos Aires province. These samples were analyzed based on their lethal potency, myotoxicity, defibrinogenating, hemolytic, and inflammatory-edematizing activity.
• The study also included the projected histological impacts of these venoms on several organs (like heart, lungs, kidneys, skeletal muscle, and liver) of mice.
• Researchers carried out in vitro studies focusing on the hemolytic activity of the venom in different systems and species such as man, horse, rabbit, and sheep, and the cytotoxicity in various cellular lines. They also examined the proteolytic and coagulant activities in plasma and fibrinogen.

Findings and Outcomes

• Results pointed out that all venom samples, regardless of their origin, demonstrated similar toxicity levels. This indicated that differences in location don’t seem to significantly alter the toxic characteristics of bee venom.
• It was discovered that erythrocytes (red blood cells) from different species corresponded differently to the pooled venom, with the venom shown to be the most harmful to equines (horse cells) and the least to sheep.
• Local and systemic myotoxicity was observed either via the rise in serum creatine kinase or through histopathological lesions in different muscle types.
• Considerable pathological alterations were noted in the pulmonary, cardiac, renal, and skeletal muscle structures.
• The study found a correlation between these substantive physical lesions and the pathophysiological mechanisms of envenomation.

Implications

• The severity of venomous impacts seemed to be more related to the number of bees involved rather than the diversity in venom toxicity from different regions of Buenos Aires.
• The results led to the conclusion that different apiaries and regions did not present variations in venom toxicity, a relevant point for future mitigation strategies in case of a bee swarm.
• This study is significant in its pioneering exploration of the toxicity and toxicological features of Apis mellifera venom in Argentina.