Resistencia bacteriana a antibióticos y metales pesados en bioaerosoles proveniente de la laguna de oxidación en Bahía de Caráquez

Thisstudy investigated the presence of resistant bacteria in bioaerosols collected from the oxidation lagoon in Bahía de Caráquez, Ecuador. A bifactorial randomized full-block experiment was designed to assess the impact of heavy metals (lead acetate and mercury nitrate) and antibiotics (azithromycin and chloramphenicol) on bacterial resistance. Bioaerosol collection was carried out at four strategic locations based on weather conditions, using the gravimetric sedimentation method. The statistical analysis revealed a strong correlation between the presence of bioaerosols and the abundance of resistant bacteria. The results indicate a significant ability of bacteria to adapt to heavy metals and antibiotics, raising concerns about microbial resistance. In particular, the bacteria showed statistically similar resistance within the antibiotic concentrations used. In the case of heavy metals, lead acetate emerged as the compound with the lowest effect on inhibition of bacterial growth, suggesting a higher resistance of the bacteria to this composite. The study also included awareness-raising activities in local communities on the risks associated with bioaerosols and bacterial resistance. This work contributes significantly to the field of environmental microbiology and has key implications for public health and environmental management in the Bahía de Caráquez region.

• Main Author: Solórzano Intriago, Oscar Fabián (author)
• Other Authors: Zambrano Alcívar, Génesis Valentina (author)
• Format: bachelorThesis
• Language: spa
• Published: 2024
• Subjects: Bioaerosoles; Resistencia microbiana; Metales pesados; Antibióticos
• Online Access: http://repositorio.espam.edu.ec/handle/42000/2354