Christoph Lübbert1,2, Christian Baars3, Anil Dayakar4, Norman Lippmann5,6, Arne C Rodloff5,6, Martina Kinzig7, Fritz Sörgel7,8. 1. Division of Infectious Diseases and Tropical Medicine, Department of Gastroenterology and Rheumatology, Leipzig University Hospital, Liebigstr. 20, 04103, Leipzig, Germany. christoph.luebbert@medizin.uni-leipzig.de. 2. Interdisciplinary Center for Infectious Diseases, Leipzig University Hospital, 04103, Leipzig, Germany. christoph.luebbert@medizin.uni-leipzig.de. 3. Ressort Investigation, North German Broadcasting Corporation (NDR), Hugh-Greene-Weg 1, 22529, Hamburg, Germany. 4. NGO Gamana, Gayatri Millennium Enclave Plot 1, Arunodaya Colony, Madhapur, Hyderabad, 500033, India. 5. Interdisciplinary Center for Infectious Diseases, Leipzig University Hospital, 04103, Leipzig, Germany. 6. Institute for Medical Microbiology and Epidemiology of Infectious Diseases, Leipzig University Hospital, Liebigstr. 21, 04103, Leipzig, Germany. 7. IBMP-Institute for Biomedical and Pharmaceutical Research, Paul-Ehrlich-Str. 19, 90562, Nürnberg-Heroldsberg, Germany. 8. Institute of Pharmacology, University of Duisburg-Essen, Hufelandstr. 55, 45122, Essen, Germany.
Abstract
PURPOSE: High antibiotic and antifungal concentrations in wastewater from anti-infective drug production may exert selection pressure for multidrug-resistant (MDR) pathogens. We investigated the environmental presence of active pharmaceutical ingredients and their association with MDR Gram-negative bacteria in Hyderabad, South India, a major production area for the global bulk drug market. METHODS: From Nov 19 to 28, 2016, water samples were collected from the direct environment of bulk drug manufacturing facilities, the vicinity of two sewage treatment plants, the Musi River, and habitats in Hyderabad and nearby villages. Samples were analyzed for 25 anti-infective pharmaceuticals with liquid chromatography-tandem mass spectrometry and for MDR Gram-negative bacteria using chromogenic culture media. In addition, specimens were screened with PCR for bla VIM, bla KPC, bla NDM, bla IMP-1, and bla OXA-48 resistance genes. RESULTS: All environmental specimens from 28 different sampling sites were contaminated with antimicrobials. High concentrations of moxifloxacin, voriconazole, and fluconazole (up to 694.1, 2500, and 236,950 µg/L, respectively) as well as increased concentrations of eight other antibiotics were found in sewers in the Patancheru-Bollaram industrial area. Corresponding microbiological analyses revealed an extensive presence of extended-spectrum beta-lactamase and carbapenemase-producing Enterobacteriaceae and non-fermenters (carrying mainly bla OXA-48, bla NDM, and bla KPC) in more than 95% of the samples. CONCLUSIONS: Insufficient wastewater management by bulk drug manufacturing facilities leads to unprecedented contamination of water resources with antimicrobial pharmaceuticals, which seems to be associated with the selection and dissemination of carbapenemase-producing pathogens. The development and global spread of antimicrobial resistance present a major challenge for pharmaceutical producers and regulatory agencies.
PURPOSE: High antibiotic and antifungal concentrations in wastewater from anti-infective drug production may exert selection pressure for multidrug-resistant (MDR) pathogens. We investigated the environmental presence of active pharmaceutical ingredients and their association with MDR Gram-negative bacteria in Hyderabad, South India, a major production area for the global bulk drug market. METHODS: From Nov 19 to 28, 2016, water samples were collected from the direct environment of bulk drug manufacturing facilities, the vicinity of two sewage treatment plants, the Musi River, and habitats in Hyderabad and nearby villages. Samples were analyzed for 25 anti-infective pharmaceuticals with liquid chromatography-tandem mass spectrometry and for MDR Gram-negative bacteria using chromogenic culture media. In addition, specimens were screened with PCR for bla VIM, bla KPC, bla NDM, bla IMP-1, and bla OXA-48 resistance genes. RESULTS: All environmental specimens from 28 different sampling sites were contaminated with antimicrobials. High concentrations of moxifloxacin, voriconazole, and fluconazole (up to 694.1, 2500, and 236,950 µg/L, respectively) as well as increased concentrations of eight other antibiotics were found in sewers in the Patancheru-Bollaram industrial area. Corresponding microbiological analyses revealed an extensive presence of extended-spectrum beta-lactamase and carbapenemase-producing Enterobacteriaceae and non-fermenters (carrying mainly bla OXA-48, bla NDM, and bla KPC) in more than 95% of the samples. CONCLUSIONS: Insufficient wastewater management by bulk drug manufacturing facilities leads to unprecedented contamination of water resources with antimicrobial pharmaceuticals, which seems to be associated with the selection and dissemination of carbapenemase-producing pathogens. The development and global spread of antimicrobial resistance present a major challenge for pharmaceutical producers and regulatory agencies.
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