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| Main Authors: | , , , , , , , , , , , , |
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| Format: | Artículo científico |
| Language: | en |
| Published: |
Animals : an open access journal from MDPI
2025
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| Online Access: | https://pubmed.ncbi.nlm.nih.gov/41514739/ |
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| _version_ | 1868266102673375232 |
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| author | Gugliandolo, Enrico Mghili, Bilal Fabrizi, Francesca Gunasekaran, Kannan Smedile, Francesco Inferrera, Francesca Natale, Sabrina Romeo, Teresa Arcadi, Erika Habib, Syed Sikandar Azzaro, Maurizio Bottari, Teresa Mancuso, Monique |
| author_facet | Gugliandolo, Enrico Mghili, Bilal Fabrizi, Francesca Gunasekaran, Kannan Smedile, Francesco Inferrera, Francesca Natale, Sabrina Romeo, Teresa Arcadi, Erika Habib, Syed Sikandar Azzaro, Maurizio Bottari, Teresa Mancuso, Monique Gugliandolo, Enrico Mghili, Bilal Fabrizi, Francesca Gunasekaran, Kannan Smedile, Francesco Inferrera, Francesca Natale, Sabrina Romeo, Teresa Arcadi, Erika Habib, Syed Sikandar Azzaro, Maurizio Bottari, Teresa Mancuso, Monique |
| collection | PubMed - marine biology |
| contents | Antibiotic and Heavy Metal Resistance in Marine Bacteria from Terra Nova Bay (Ross Sea): Insights from Wild Fish and Environmental Samples. Gugliandolo, Enrico Mghili, Bilal Fabrizi, Francesca Gunasekaran, Kannan Smedile, Francesco Inferrera, Francesca Natale, Sabrina Romeo, Teresa Arcadi, Erika Habib, Syed Sikandar Azzaro, Maurizio Bottari, Teresa Mancuso, Monique This study examines the occurrence of bacteria resistant to antibiotics and heavy metals in Terra Nova Bay, a coastal area of the Ross Sea in Antarctica that is increasingly recognised as vulnerable to human influence. During the 37th Italian Antarctic Expedition (2021-2022), researchers collected seawater, sediment, and fish samples from the notothenioid species to evaluate microbial resistance in an environment once considered largely pristine. Fifty heterotrophic bacterial isolates were obtained and tested against twenty-eight antibiotics, revealing a notable presence of multidrug resistance. These multidrug-resistant isolates were then assessed for their tolerance to eight heavy metal salts to understand whether resistance traits extended beyond antimicrobials. Twelve isolates showing resistance to both antibiotics and metals were selected for further genetic screening, targeting key resistance genes linked to tetracycline, vancomycin, sulphonamides, and other antimicrobial classes. The detection of multiple resistance genes in genera such as , , and indicates that both natural selective pressures and local, human-related contamination may be shaping resistance patterns in this region. Overall, the study demonstrates that even remote Antarctic marine ecosystems can host bacteria with complex resistance profiles. While these ecosystems are largely isolated, human activities such as scientific research, tourism, and the introduction of pollutants may contribute to the dissemination of antibiotic resistance genes, raising important ecological and potential public health considerations regarding the spread of resistance in polar environments. |
| format | Artículo científico |
| id | pubmed_41514739 |
| institution | PubMed |
| language | en |
| publishDate | 2025 |
| publisher | Animals : an open access journal from MDPI |
| record_format | pubmed |
| spellingShingle | Antibiotic and Heavy Metal Resistance in Marine Bacteria from Terra Nova Bay (Ross Sea): Insights from Wild Fish and Environmental Samples. Gugliandolo, Enrico Mghili, Bilal Fabrizi, Francesca Gunasekaran, Kannan Smedile, Francesco Inferrera, Francesca Natale, Sabrina Romeo, Teresa Arcadi, Erika Habib, Syed Sikandar Azzaro, Maurizio Bottari, Teresa Mancuso, Monique Antibiotic and Heavy Metal Resistance in Marine Bacteria from Terra Nova Bay (Ross Sea): Insights from Wild Fish and Environmental Samples. Gugliandolo, Enrico Mghili, Bilal Fabrizi, Francesca Gunasekaran, Kannan Smedile, Francesco Inferrera, Francesca Natale, Sabrina Romeo, Teresa Arcadi, Erika Habib, Syed Sikandar Azzaro, Maurizio Bottari, Teresa Mancuso, Monique This study examines the occurrence of bacteria resistant to antibiotics and heavy metals in Terra Nova Bay, a coastal area of the Ross Sea in Antarctica that is increasingly recognised as vulnerable to human influence. During the 37th Italian Antarctic Expedition (2021-2022), researchers collected seawater, sediment, and fish samples from the notothenioid species to evaluate microbial resistance in an environment once considered largely pristine. Fifty heterotrophic bacterial isolates were obtained and tested against twenty-eight antibiotics, revealing a notable presence of multidrug resistance. These multidrug-resistant isolates were then assessed for their tolerance to eight heavy metal salts to understand whether resistance traits extended beyond antimicrobials. Twelve isolates showing resistance to both antibiotics and metals were selected for further genetic screening, targeting key resistance genes linked to tetracycline, vancomycin, sulphonamides, and other antimicrobial classes. The detection of multiple resistance genes in genera such as , , and indicates that both natural selective pressures and local, human-related contamination may be shaping resistance patterns in this region. Overall, the study demonstrates that even remote Antarctic marine ecosystems can host bacteria with complex resistance profiles. While these ecosystems are largely isolated, human activities such as scientific research, tourism, and the introduction of pollutants may contribute to the dissemination of antibiotic resistance genes, raising important ecological and potential public health considerations regarding the spread of resistance in polar environments. |
| title | Antibiotic and Heavy Metal Resistance in Marine Bacteria from Terra Nova Bay (Ross Sea): Insights from Wild Fish and Environmental Samples. |
| url | https://pubmed.ncbi.nlm.nih.gov/41514739/ |