Resistance to copper ions and antibiotics in marine heterotrophic bacteria in the coastal waters of Vietnam

Беленева, И. А.; Kukhlevsky, A. D.; Kharchenko, U. V.; Kovalchuk, Yu. L.

doi:10.1134/s1063074011040043

Cited by 6 publications

(2 citation statements)

References 15 publications

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“…It is known that antibiotics and heavy metals can inhibit or kill bacteria, but in some cases these microorganisms can resist and survive due to their ability to neutralize and escape the eff ect of these compounds (33). The multi-resistance of heavy metals and antibiotics by bacteria from the environment was reported by several researchers (34)(35)(36). The increase of antibiotic and heavy metal resistant bacteria is due to the genetic fl exibility of the bacteria and their capacity to attain and transfer resistance genes (33).…”

Section: Discussionmentioning

confidence: 99%

Biological Removal of the Mixed Pharmaceuticals: Diclofenac, Ibuprofen, and Sulfamethoxazole Using a Bacterial Consortium

Aissaoui

Ouled-Haddar

Sifour

et al. 2017

Iran. J. Biotechnol.

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The presence of pharmaceuticals at low concentrations (ng to μg) in the environment has become a hot spot for researchers in the past decades due to the unknown environmental impact and the possible damages they might have to the plantae and fauna present in the aquatic systems, as well as to the other living organisms. The aim of the present investigation was to develop a bacterial consortium isolated from different origins to evaluate the ability of such a consortium to remove a mixture of pharmaceuticals in the batch system at lab scale, as well as assessment of its resistance to the other micropollutants present in the environment. Using a closed bottle test, biodegradation of the mixed pharmaceuticals including Diclofenac (DCF), Ibuprofen (IBU), and Sulfamethoxazole (SMX) (at a concentration of 3 mg.L of each drug) by the bacterial consortium was investigated. The test was carried out under metabolic (pharmaceutical was used as the sole source of carbon) and co-metabolic condition (in the presence of glucose). Finally, the ability of the bacterial consortium to resist other micropollutants like antibiotics and heavy metals was investigated. Under the metabolic condition, the mixed bacteria (i.e., consortium) were able to metabolize 23.08% and 9.12% of IBU, and DCF at a concentration of 3 mg.L of each drug, respectively. Whereas, in co-metabolic conditions, IBU was eliminated totally, in addition, 56% of the total concentration of DCF was removed, as well. In both metabolic and cometabolic conditions, removal of SMX was not observed. The selected bacteria were able to resist to most of the applied antibiotics and the used heavy metals, except mercury, where only one strain (S4) was resistant to the later heavy metal. Results suggest that the developed consortium might be an excellent candidate for the application in the bioremediation process for treating ecosystems contaminated with the pharmaceutical.

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Section: Discussionmentioning

confidence: 99%

Biological Removal of the Mixed Pharmaceuticals: Diclofenac, Ibuprofen, and Sulfamethoxazole Using a Bacterial Consortium

Aissaoui

Ouled-Haddar

Sifour

et al. 2017

Iran. J. Biotechnol.

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“…(); in coastal water: Beleneva et al. (); in sediments: Kacar and Kocyigit ()). However, most of the available evidence is, at best, circumstantial because the vast majority of studies rely on correlations between metal and antibiotic resistance genes (ARG) in bacterial isolates and on environmental studies where the selective agent cannot be identified with certainty.…”

Section: Assessmentmentioning

confidence: 99%

Revision of the currently authorised maximum copper content in complete feed

2016

EFS2

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The Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) reviewed (i) the copper requirements of food-producing and pet animals, (ii) the copper concentration in feed materials and complete feed, (iii) the copper bioavailability, and (iv) the calculated background copper concentration of complete feed. Also considered were (i) the influence of dietary copper on gut microbiota profile and on the bacterial antibiotic resistance in target animals and (ii) the environmental occurrence of bacterial heavy metal tolerance (copper resistance) and resistance to certain antibiotics. The data collected supported the possibility of a reduction in some of the currently authorised maximum contents (CAMC) for total copper in feed. The EFSA Panel developed an algorithm to derive newly proposed maximum contents (NPMC) from the requirement and the native dietary copper content. The NPMC (mg Cu/kg complete feed) comprised of maintained (m), decreased (d) and increased (i) values: 15 for bovine before the start of rumination (m), 30 for other bovine (d), 35 for caprine (i), 15 for ovine (m), 50 for crustacean (m) and 25 for other animal species ((d) for piglets up to 12 weeks, (m) for all other species). The NMPC support health, welfare and economic productivity of target animals, except piglets; performance of weaned piglets would be impacted. The NPMC values would not likely have any consequences on the consumers' intake of copper and are of no concern for the safety of the consumer. The reduction from 170 mg to 25 mg Cu/kg feed piglets would have the capacity to save 1,200 tonnes copper/year being spread in the field and thus, to reduce total copper emissions from farm animal production by about 20%. Thus, the reduction of the CAMC to the NPMC would have a significant impact on the concentrations of copper in the environment of piggeries.

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Antifouling potential of a marine strain, Pseudomonas aeruginosa 1242, isolated from brass microfouling in Vietnam

Kharchenko

Беленева

Дмитриева

2012

International Biodeterioration & Biodegradation

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Resistance to copper ions and antibiotics in marine heterotrophic bacteria in the coastal waters of Vietnam

Cited by 6 publications

References 15 publications

Biological Removal of the Mixed Pharmaceuticals: Diclofenac, Ibuprofen, and Sulfamethoxazole Using a Bacterial Consortium

Biological Removal of the Mixed Pharmaceuticals: Diclofenac, Ibuprofen, and Sulfamethoxazole Using a Bacterial Consortium

Revision of the currently authorised maximum copper content in complete feed

Antifouling potential of a marine strain, Pseudomonas aeruginosa 1242, isolated from brass microfouling in Vietnam

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