Nitrate exposure induces intestinal microbiota dysbiosis and metabolism disorder in Bufo gargarizans tadpoles

Xie, Lei; Zhang, Yuhui; Gao, Jinshu; Wang, Hongyuan

doi:10.1016/j.envpol.2020.114712

Cited by 14 publications

(3 citation statements)

References 61 publications

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“…Potassium sorbate was reported to change gut microbiota composition and inhibit gut microbiota metabolism of zebrafish 8 . Similarly, nitrate exposure induced gut microbiota dysbiosis and metabolism disorder in Bufo gargarizans tadpoles 9 . In rodent models, mixture of sodium benzoate, sodium nitrite and potassium sorbate induced dysbiosis in both wild-type and human microbiota-associated Nod 2 −/− mice 10 .…”

Section: Introductionmentioning

confidence: 98%

Systematic evaluation of antimicrobial food preservatives on glucose metabolism and gut microbiota in healthy mice

et al. 2022

npj Sci Food

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Certain antimicrobial preservatives (APs) have been shown to perturb gut microbiota. So far, it is not yet fully known that whether similar effects are observable for a more diverse set of APs. It also remains elusive if biogenic APs are superior to synthetic APs in terms of safety. To help fill these knowledge gaps, the effects of eleven commonly used synthetic and biogenic APs on the gut microbiota and glucose metabolism were evaluated in the wild-type healthy mice. Here, we found that APs induced glucose intolerance and perturbed gut microbiota, irrespective of their origin. In addition, biogenic APs are not always safer than synthetic ones. The biogenic AP nisin unexpectedly induced the most significant effects, which might be partially mediated by glucagon-like peptide 1 related glucoregulatory hormones secretion perturbation.

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Section: Introductionmentioning

confidence: 98%

Systematic evaluation of antimicrobial food preservatives on glucose metabolism and gut microbiota in healthy mice

et al. 2022

npj Sci Food

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“…Under this circumstance, the electrochemical filter can enhance the diffusion of nitrate, facilitating the adsorption and subsequent reduction of NO 3 – on the active sites. The Co–CuO x filter was competent to reduce the aqueous nitrate concentration to a potable level (<10 N−mg L –1 ) at the flux of 60–120 L m –2 h –1 (Figure a). In addition, the removal of nitrate and TN decreased with an increase in the flux, that is, 95.2% of nitrate and 91.4% of TN were removed at a flux of 60 L m –2 h –1 as compared to 40.9 and 38.8% at 180 L m –2 h –1 (Figure S20).…”

Section: Resultsmentioning

confidence: 99%

Direct Electron Transfer Coordinated by Oxygen Vacancies Boosts Selective Nitrate Reduction to N₂ on a Co–CuO_x Electroactive Filter

et al. 2022

Environ. Sci. Technol.

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Atomic hydrogen (H*) is used as an important mediator for electrochemical nitrate reduction; however, the Faradaic efficiency (FE) and selective reduction to N2 are likely compromised due to the side reactions (e.g., ammonia generation and hydrogen evolution reactions). This work reports a Co–CuO x electrochemical filter with CoO x nanoclusters rooted on vertically aligned CuO x nanowalls for selective nitrate reduction to N2, utilizing the direct electron transfer between oxygen vacancies and nitrate to suppress the contribution by H*. At a cathodic potential of −1.1 V (vs Ag/AgCl), the Co–CuO x filter showed 95.2% nitrate removal and 96.0% N2 selectivity at an influent nitrate concentration of 20 N−mg L–1. Meanwhile, the energy consumption and FE were 0.60 kW h m–3 and 53.5%, respectively, at a permeate flux of 60 L m–2 h–1. The presence of abundant oxygen vacancies on Co–CuO x was due to the change in the electron density of the Cu atom and a decrease of the coordination numbers of Cu–O via cobalt doping. Theoretical calculations and electrochemical tests showed that the oxygen vacancies coordinated nitrate adsorption and subsequent reduction reactions, thus suppressing the contribution of H* to nitrate reduction and leading to a thermodynamically favorable process to N2 via direct electron transfer.

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“…Lower abundance of nitrate‐reducing bacteria in unproductive adult tank water could explain the elevated nitrate levels. A disproportionate nitrogen cycle would be very disruptive to aquatic lifeforms and thus lead to unproductivity (Infante‐Villamil et al, 2021 ; Xie et al, 2020 ). We were also unable to attribute functionality to the bacterial communities characterized in this study due to the absence of metagenomic data, and the limited number of samples, both microbial and environmental, taken.…”

Section: Discussionmentioning

confidence: 99%

Aquaculture production of hatchling Hawaiian Bobtail Squid (Euprymna scolopes) is negatively impacted by decreasing environmental microbiome diversity

Murphy

Xiao

Brooks

et al. 2022

Journal of Applied Microbiology

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Aims:The Hawaiian Bobtail Squid (Euprymna scolopes) is a model organism for investigating host-symbiont relationships. The current scientific focus is on the microbiome within E. scolopes, while very little is known about the microbiome of the tanks housing E. scolopes. We examined the hypothesis that bacterial communities and geochemistry within the squid tank environment correlate with the production of viable paralarval squid. Methods and Results:Total DNA was extracted from sediment and filtered water samples from 'productive' squid cohorts with high embryonic survival and paralarval hatching, 'unproductive' cohorts with low embryonic survival and paralarval hatching. As a control total DNA was extracted from environmental marine locations where E. scolopes is indigenous. Comparative analysis of the bacterial communities by the 16S rRNA gene was performed using next generation sequencing. Thirty-eight differentially abundant genera were identified in the adult tank waters. The majority of the sequences represented unclassified, candidate or novel genera. The characterized genera included Aquicella, Woeseia and Ferruginibacter, with Hyphomicrobium and Rhizohapis were found to be more abundant in productive adult tank water. In addition, nitrate and pH covaried with productive cohorts, explaining 67% of the bacterial populations. The lower abundance of nitrate-reducing bacteria in unproductive adult tank water could explain detected elevated nitrate levels. Conclusions:We conclude that microbiome composition and water geochemistry can negatively affect E. scolopes reproductive physiology in closed tank systems, ultimately impacting host-microbe research using these animals.Significance and Impact of study: These results identify the tight relationship between the microbiome and geochemistry to E. scolopes. From this study, it may be possible to design probiotic counter-measures to improve aquaculture conditions for E. scolopes.

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Nitrate exposure induces intestinal microbiota dysbiosis and metabolism disorder in Bufo gargarizans tadpoles

Cited by 14 publications

References 61 publications

Systematic evaluation of antimicrobial food preservatives on glucose metabolism and gut microbiota in healthy mice

Systematic evaluation of antimicrobial food preservatives on glucose metabolism and gut microbiota in healthy mice

Direct Electron Transfer Coordinated by Oxygen Vacancies Boosts Selective Nitrate Reduction to N₂ on a Co–CuO_x Electroactive Filter

Aquaculture production of hatchling Hawaiian Bobtail Squid (Euprymna scolopes) is negatively impacted by decreasing environmental microbiome diversity

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Nitrate exposure induces intestinal microbiota dysbiosis and metabolism disorder in Bufo gargarizans tadpoles

Cited by 14 publications

References 61 publications

Systematic evaluation of antimicrobial food preservatives on glucose metabolism and gut microbiota in healthy mice

Systematic evaluation of antimicrobial food preservatives on glucose metabolism and gut microbiota in healthy mice

Direct Electron Transfer Coordinated by Oxygen Vacancies Boosts Selective Nitrate Reduction to N2 on a Co–CuOx Electroactive Filter

Aquaculture production of hatchling Hawaiian Bobtail Squid (Euprymna scolopes) is negatively impacted by decreasing environmental microbiome diversity

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Direct Electron Transfer Coordinated by Oxygen Vacancies Boosts Selective Nitrate Reduction to N₂ on a Co–CuO_x Electroactive Filter