Sorption of the fluoroquinolone antibiotic ofloxacin by aquatic sediments: influence of biofilm development at the sediment-water interface

Zhang, Liwen; Dong, Deming; Xia, Hua; Guo, Zhiyong

doi:10.1007/s11368-019-02356-w

Cited by 10 publications

(3 citation statements)

References 67 publications

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“…Flavobacterium psychrophilum in biofilm rapidly developed resistance to oxytetracycline and flumequine when the bacterium was exposed to sub‐MIC of these antimicrobials (Sundell & Wiklund, 2011). Furthermore, a recent study carried out with the fluoroquinolone antibiotic ofloxacin showed that its sorption to sediments was inhibited when they were coated by biofilms, increasing the concentration of antibiotics in the aqueous phase and further enhancing the ecological risks associated to their presence in water reservoirs (Zhang et al, 2019). In addition, biofilms promote the acquisition of ‘resistance’ genes (i.e.…”

Section: Resultsmentioning

confidence: 99%

Subinhibitory concentrations of florfenicol increase the biofilm formation of Piscirickettsia salmonis

Oliver

Céspedes

Santibáñez

et al. 2023

Journal of Fish Diseases

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Piscirickettsia salmonis is a Gram-negative facultative intracellular γ-proteobacterium, classified into two genogroups: LF-89 T (ATCC VR-1361) and EM-90 strains (Nourdin-Galindo et al., 2017). This bacterium is the aetiological agent of piscirickettsiosis, a systemic fish disease characterized by the bacterial colonization of several organs, including liver, kidney, spleen, skeletal muscle, intestine and gills among others (Rozas & Enríquez, 2014), causing severe economic losses in Chilean salmonid farms (Sernapesca, 2022a). Although the main disease outbreaks and the subsequent associated mortality had been identified in southern Chile, this disease has also been reported in several countries (Rozas & Enríquez, 2014). The Chilean salmon industry uses several biosecurity measures as a way to mitigate the impact of infectious diseases. Thus, 29 different vaccine formulations are currently approved for use against piscirickettsiosis (SAG, 2022) Statistical data from The Chilean National Fisheries and Aquaculture Service (SERNAPESCA) indicated that piscirickettsiosis is the most prevalent bacterial disease affecting Chilean salmon (Sernapesca, 2022a). For this reason, antibiotics remain the primary treatment against piscirickettsiosis outbreaks. The Chilean salmon industry used 4634 tons of antibiotics in

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Section: Resultsmentioning

confidence: 99%

Subinhibitory concentrations of florfenicol increase the biofilm formation of Piscirickettsia salmonis

Oliver

Céspedes

Santibáñez

et al. 2023

Journal of Fish Diseases

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“…Biofilms themselves can also affect the fate of antibiotics and their impacts in the environment. For example, a recent study has shown that sorption of the fluoroquinolone antibiotic ofloxacin to sediments was inhibited when sediments were coated by biofilms, increasing the concentration of the antibiotics in the aqueous phase and further enhancing the ecological risks associated with the presence of the antibiotic in water reservoirs ( Zhang L. et al, 2019 ).…”

Section: Biofilms In Naturementioning

confidence: 99%

Secondary Effects of Antibiotics on Microbial Biofilms

et al. 2020

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Biofilms are assemblages of microorganisms attached to each other, or to a surface, and encased in a protective, self-produced matrix. Such associations are now recognized as the predominant microbial growth mode. The physiology of cells in biofilms differs from that of the planktonic cells on which most research has been conducted. Consequently, there are significant gaps in our knowledge of the biofilm lifestyle. Filling this gap is particularly important, given that biofilm cells may respond differently to antibiotics than do planktonic cells of the same species. Understanding the effects of antibiotics on biofilms is of paramount importance for clinical practice due to the increased levels of antibiotic resistance and resistance dissemination in biofilms. From a wider environmental perspective antibiotic exposure can alter the ecology of biofilms in nature, and hence disrupt ecosystems. Biofilm cells display increased resilience toward antibiotics. This resilience is often explained by mechanisms and traits such as decreased antibiotic penetration, metabolically inactive persister cells, and intrinsic resistance by members of the biofilm community. Together, these factors suggest that cells in biofilms are often exposed to subinhibitory concentrations of antimicrobial agents. Here we discuss how cells in biofilms are affected by the presence of antibiotics at subinhibitory concentrations, and the possible ramifications of such secondary effects for healthcare and the environment.

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“…Antibiotics can be absorbed and held in soil by interacting with the adsorption sites on the surface of soil organic matter or inorganic colloid through intermolecular forces, such as hydrogen bond and Van der Waals force, or through cation exchange, static electricity, bond bridge, coordination or complexation, etc. [14,15]. Nitrogen (N) mineralization is a process in which organic nitrogen-containing compounds in soil are transformed into inorganic nitrogen under the action of soil microorganisms, which is one of the critical processes of terrestrial N cycle [16].…”

Section: Introductionmentioning

confidence: 99%

Dissolved Inorganic Nitrogen Input via Net Nitrogen Mineralization under Antibiotics and Warming from the Water Level Fluctuation Zone of a Three Gorges Tributary

Lin

Yan

Liú³

et al. 2021

Water

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The water level fluctuation (WLF) zone is one of the dominant sources of total dissolved inorganic nitrogen (TDN) export via net nitrogen (N) mineralization in the Three Gorges Reservoir (TGR). However, antibiotics pollution may impact the process of TND exports from WLF zone in the TGR, especially under drying-rewetting processes and climate warming, and thus increasing the risk of eutrophication in the tributaries of the TGR. The effects of the antibiotics Griseofulvin (GIN) and Fosfomycin (FIN) with 0, 0.2 and 0.4 g kg−1 net N mineralization rate (NMR) from WLF-zone soil in the Pengxi river, a typical tributary of the Yangtze River, under 25 and 35 °C were estimated in 30−day flooding and drying incubations. The results showed that GIN concentrations, temperatures and their interaction significantly affect net-nitrification rates (NNR) and NMR under drying and did not significantly affect NNR under flooding. FIN concentrations and temperatures solely influenced the NNR under flooding. The amounts of TDN exports via NMR without antibiotics from the WLF zone of Pengxi River are 6883.8 (flooding, 25 °C), 9987.3 (flooding, 35 °C), 9781.6 (drying, 25 °C), and 27866.5 (drying, 35 °C) t year−1, which is 21.0, 29.8, 30.4 and 84.8 times of the permissible Class A discharge in China according to (GB18918-2002). Thus, the NMR of WLF zone should be controlled whether there is antibiotics pollution or not, especially during the dry period for alleviating water eutrophication. This study will be helpful for the assessment of nitrogen budgets in the WLF zone to eutrophication in the Three Gorges Reservoir.

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Sorption of the fluoroquinolone antibiotic ofloxacin by aquatic sediments: influence of biofilm development at the sediment-water interface

Cited by 10 publications

References 67 publications

Subinhibitory concentrations of florfenicol increase the biofilm formation of Piscirickettsia salmonis

Subinhibitory concentrations of florfenicol increase the biofilm formation of Piscirickettsia salmonis

Secondary Effects of Antibiotics on Microbial Biofilms

Dissolved Inorganic Nitrogen Input via Net Nitrogen Mineralization under Antibiotics and Warming from the Water Level Fluctuation Zone of a Three Gorges Tributary

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