How does the study show that antibiotics are more likely to be used in microbial communities?

A recent study also 15 found that cooperative communities (i.e. when metabolites produced by one organism are 16 used as nutrients or energy source by another) are more susceptible to antibiotics and as 17 cross-feeding is nearly ubiquitous in microbial communities, low antibiotic concentrations 18 might have a stronger effect than previously thought (Adamowicz et al., 2018).

What are the main interactions between bacteria and protozoans in the ecosystem?

In addition to bacteria interacting with other bacteria, important interactions in natural 20 microbial communities are those with protozoan predators.

How many studies report toxicity of antibiotics on freshwater organisms?

17 According to the Wikipharma data, 25% of all studies estimating the effects of 18 antibiotics on eukaryotic, single celled algae, found EC50 values below 1 mg/L and 12 studies 19 even report EC50 to be below 100 µg/L (electronic supplementary material table S2).

What is the role of the sediment in the removal of micropollutants?

the sediment 14 has a critical role in pollution attenuation and removal rates of emerging micropollutants 15 (Peralta-Maraver et al., 2018b, 2018a).

How likely are antibiotics to have direct effects in freshwater communities?

21 22Their literature search shows that antibiotic concentrations measured in fresh waters, despite 24 concentrations being well below clinically-relevant levels, are very likely to have direct, and 25for freshwater communities - as a mixture and under global change scenarios.

How did the EC50 of the 137 12 experiments affect the sex-rati?

Low levels of antibiotics directly in contact with invertebrates 10 (such as crustaceans, cnidarians and molluscs) did not affect their degree of survival, their 11 reproduction, nor their sex-ratio, with the exception of a few cases, and only five of the 137 12 experiments measured an EC50 lower than 1 mg/L (Calleja et al., 1993; Isidori et al., 2005).

What are the main research avenues for antibiotic impacts on freshwater communities?

To capture the 3 true effects of antibiotic impacts on whole communities, and the ecosystem processes they 4 drive, the authors propose three major future research avenues: i) food webs, ii) antibiotic mixtures 5 and iii) interaction with other stressors such as temperature (Fig. 2), as the authors outline in the 6 following paragraphs.

Open AccessJournal Article10.1016/J.SCITOTENV.2019.01.406

Antibiotic pollution in surface fresh waters: Occurrence and effects

Marie-Claire Danner, +3 more

- 10 May 2019

- Science of The Total Environment

- Vol. 664, pp 793-804

893

TL;DR: Important aspects of antibiotic pollution in fresh waters are highlighted: that concentrations of antibiotics in the environment are substantial, that micro-organisms are susceptible to this, that bacteria can evolve resistance in the environments, and that antibiotic pollution affects natural food webs while interacting with other stressors; which taken together poses a number of challenges for environmental scientists.

About: This article is published in Science of The Total Environment. The article was published on 10 May 2019. and is currently open access.

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1. What are the future works in this paper?

23 Going forward, the authors believe some general considerations can help future studies.

2. what is the kinase of pseudomonas 22?

The sensor kinase CbrA is a global regulator 21 that modulates metabolism, virulence, and antibiotic resistance in Pseudomonas 22 aeruginosa.

3. What are the main sources of antibiotic pollution in the open water of streams and rivers?

7 WWTP effluents and run-off from the terrestrial landscape are the main sources for 8 antibiotic pollution (and other micropollutants) in the open water of streams and rivers.

4. how many veterinary antibiotics are in the mekong delta?

Distribution of 20 macrolides, sulfonamides, and trimethoprim in tropical waters: Ubiquitous occurrence of 21 veterinary antibiotics in the Mekong Delta.

Citations

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Degradation of antibiotics by advanced oxidation processes: An overview.

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- 20 Jan 2020

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TL;DR: In this review paper, a variety of AOPs, such as Fenton or Fenton-like reaction, oz onation or catalytic ozonation, photocatalytic oxidation, electrochemical oxidation, and ionizing radiation were briefly introduced, including their principles, characteristics, main influencing factors and applications.

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Antibiotics in the environment: causes and consequences.

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- 29 Jul 2020

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Mechanisms underlying the photocatalytic degradation pathway of ciprofloxacin with heterogeneous TiO2

Xi Hu, +10 more

- 15 Jan 2020

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TL;DR: In this article, a review of the recent advances in visible light-activated TiO2 for the photocatalytic degradation of antibiotics from water systems by titanium dioxide (TiO2) photocatalysis is presented.

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Antibiotics in surface water of East and Southeast Asian countries: A focused review on contamination status, pollution sources, potential risks, and future perspectives

Hoang Quoc Anh, +23 more

- 10 Apr 2021

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TL;DR: Findings underline the need for synergistic efforts from scientists, engineers, policy makers, government managers, entrepreneurs, and communities to manage and reduce the burden of antibiotics and antibiotic resistance in water bodies of East and Southeast Asian countries.

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Cell-free biosensors for rapid detection of water contaminants

Jaeyoung K. Jung, +13 more

- 06 Jul 2020

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TL;DR: A cell-free in vitro transcription system that uses RNA Output Sensors Activated by Ligand Induction (ROSALIND) to detect contaminants in water, and it is shown that adding RNA circuitry can invert responses, reduce crosstalk and improve sensitivity without protein engineering.

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References

Journal Article•10.1016/J.WATRES.2013.01.020

Toxicity of five antibiotics and their mixtures towards photosynthetic aquatic organisms: implications for environmental risk assessment.

Miguel González-Pleiter, +7 more

- 15 Apr 2013

- Water Research

TL;DR: From the tested antibiotic mixtures, it can be concluded that certain specific combinations may pose a potential ecological risk for aquatic ecosystems with the present environmentally measured concentrations.

...read moreread less

720

•Journal Article•10.1186/S12864-015-2153-5

Co-occurrence of resistance genes to antibiotics, biocides and metals reveals novel insights into their co-selection potential

Chandan Pal, +3 more

- 17 Nov 2015

- BMC Genomics

TL;DR: Genetic co-occurrences suggest that plasmids provide limited opportunities for biocides and metals to promote horizontal transfer of antibiotic resistance through co-selection, whereas ample possibilities exist for indirect selection via chromosomal BMRGs.

...read moreread less

703

Journal Article•10.1016/J.SCITOTENV.2004.11.017

Toxic and genotoxic evaluation of six antibiotics on non-target organisms

Marina Isidori, +4 more

- 15 Jun 2005

- Science of The Total Environment

TL;DR: The macrolides were found to be the most harmful for the aquatic environment and the environmental risk was calculated by MEC/PNEC ratio using the available data from the literature regarding their occurrence in the aquatic environments and the toxicity data obtained from the bioassays performed.

...read moreread less

698

Journal Article•10.1021/ES020158E

Strategic Survey of Therapeutic Drugs in the Rivers Po and Lambro in Northern Italy

Davide Calamari, +4 more

- 22 Feb 2003

- Environmental Science & Technology

TL;DR: The patterns of contamination showed differences among sub-basins which correlated with the presence of large human settlements and/or animal farms, and the ratio of measured to predicted concentrations (MEC/...

...read moreread less

698

Journal Article•10.1016/J.TREE.2009.03.018

Emerging horizons in biodiversity and ecosystem functioning research

Julia Reiss, +4 more

- 01 Sep 2009

- Trends in Ecology and Evolution

TL;DR: It is concluded that addressing traits, multiple processes and food web interactions is needed to capture the mechanisms that underlie B-EF relations in natural assemblages.

...read moreread less

640

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Antibiotic pollution in surface fresh waters: Occurrence and effects

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AI Agents for this Paper

Most frequently asked questions

1. What are the future works in this paper?

2. what is the kinase of pseudomonas 22?

3. What are the main sources of antibiotic pollution in the open water of streams and rivers?

4. how many veterinary antibiotics are in the mekong delta?

5. How does the study show that antibiotics are more likely to be used in microbial communities?

6. What are the main interactions between bacteria and protozoans in the ecosystem?

7. How many studies report toxicity of antibiotics on freshwater organisms?

8. What is the role of the sediment in the removal of micropollutants?

9. How likely are antibiotics to have direct effects in freshwater communities?

10. How did the EC50 of the 137 12 experiments affect the sex-rati?

11. What are the main research avenues for antibiotic impacts on freshwater communities?

Citations

Degradation of antibiotics by advanced oxidation processes: An overview.

Antibiotics in the environment: causes and consequences.

Mechanisms underlying the photocatalytic degradation pathway of ciprofloxacin with heterogeneous TiO2

Antibiotics in surface water of East and Southeast Asian countries: A focused review on contamination status, pollution sources, potential risks, and future perspectives

Cell-free biosensors for rapid detection of water contaminants

References

Toxicity of five antibiotics and their mixtures towards photosynthetic aquatic organisms: implications for environmental risk assessment.

Co-occurrence of resistance genes to antibiotics, biocides and metals reveals novel insights into their co-selection potential

Toxic and genotoxic evaluation of six antibiotics on non-target organisms

Strategic Survey of Therapeutic Drugs in the Rivers Po and Lambro in Northern Italy

Emerging horizons in biodiversity and ecosystem functioning research

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