Long-term hexavalent chromium exposure facilitates colorectal cancer in mice associated with changes in gut microbiota composition

Zhang, Zecai; Cao, Hongshi; Song, Ning; Zhang, Lixiao; Cao, Yongguo; Tai, Jiandong

doi:10.1016/j.fct.2020.111237

Cited by 78 publications

(35 citation statements)

References 48 publications

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“…in soil of WBC indicated that the microbial aggregates formation on the biochar could enhance the inhabitation of exogenous microorganisms in the contaminated soil efficiently; the results were similar to those of Wang et al (2004). On the other hand, Saccharimonadaceae was the main microbe with the function of heavy metal transformation (Zhang et al, 2020) and Sphingomonas spp. is the main flocculating bacteria and could strengthen the adhesion of functional microorganisms to biochar .…”

Section: Effects Of Microbial Aggregates On the Microbial Community Imentioning

confidence: 54%

Remediation of Chromium-Contaminated Soil Based on Bacillus cereus WHX-1 Immobilized on Biochar: Cr(VI) Transformation and Functional Microbial Enrichment

Chen

Sun

et al. 2021

Front. Microbiol.

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Microorganisms are applied to remediate chromium (Cr)-contaminated soil extensively. Nevertheless, the microbial loss and growth inhibition in the soil environment restrain the application of this technology. In this study, a Cr(VI)-reducing strain named Bacillus cereus WHX-1 was screened, and the microbial aggregates system was established via immobilizing the strain on Enteromorpha prolifera biochar to enhance the Cr(VI)-reducing activity of this strain. The mechanism of the system on Cr(VI) transformation in Cr-contaminated soil was illuminated. Pot experiments indicated that the microbial aggregates system improved the physicochemical characteristics of Cr-contaminated soil obviously by increasing organic carbon content and cation exchange capacity, as well as decreasing redox potential and bulk density of soil. Moreover, 94.22% of Cr(VI) was transformed into Cr(III) in the pot, and the content of residue fraction Cr increased by 63.38% compared with control check (CK). Correspondingly, the physiological property of Ryegrass planted on the Cr-contaminated soil was improved markedly and the main Cr(VI)-reducing microbes, Bacillus spp., were enriched in the soil with a relative abundance of 28.43% in the microbial aggregates system. Considering more active sites of biochar for microbial aggregation, it was inferred that B. cereus WHX-1 could be immobilized by E. prolifera biochar, and more Cr(VI) was transformed into residue fraction. Cr stress was decreased and the growth of plants was enhanced. This study would provide a new perspective for Cr-contaminated soil remediation.

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Section: Effects Of Microbial Aggregates On the Microbial Community Imentioning

confidence: 54%

Remediation of Chromium-Contaminated Soil Based on Bacillus cereus WHX-1 Immobilized on Biochar: Cr(VI) Transformation and Functional Microbial Enrichment

Chen

Sun

et al. 2021

Front. Microbiol.

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“…A search of the literature failed to identify any other studies reporting a connection between hip prostheses and renal cancer. However, an association between hexavalent chromium and colorectal, stomach, and prostate cancer has been documented [ 12 – 14 ]. When placed in an oxidative medium, bulk chromium develops a thin layer of passivation [ 15 ].…”

Section: Discussionmentioning

confidence: 99%

Metal-Metal Hip Prosthesis and Kidney Cancer: Assumed Role of Chromium and Cobalt Overload

Massardier¹,

Catinon²,

Trunfio-Sfarghiu

et al. 2020

Am J Case Rep

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“…Cr VI resulting from industrial waste contaminates countless bodies of water worldwide (Kardam et al 2014). Besides, the International Agency for Research on Cancer has classi ed this element in carcinogen group I (Straif et al 2009); because several studies have shown that it can cause lung and gastrointestinal tract cancer (Zhang et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Remediation of contaminated water with Chromium VI by sorption in surface-activated-nanocellulose

Renata¹,

Bernardo²,

Patricia³

et al. 2021

Preprint

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Chromium VI is a frequent pollutant of industrial liquid effluents resulting from industrial waste. It is a substance classified into the carcinogen group I. In this study, a Cr VI sorption mechanism was developed by using nanocellulose beads (hydrogel) obtained from ivory nut. Cr VI was detected in water by a colorimetric method, using 1, 5-diphenylcarbazide at λ 540 nm. The sorption capacity of nanocellulose spheres was tested by varying the solution's pH and temperatures. Our results showed that nanocellulose can efficiently adsorb at pH 4 and 25°C. Removal percentages were between 91.29%(+/-1.36) and 95.33%(+/- 0.86) of the total Cr VI. The sorption kinetics showed that the material reaches equilibrium after 20–30 minutes. Additionally, an analysis of adsorption isotherms showed a high fit with the Langmuir and Freundlinch isotherms. Therefore, this method seem to be applied both to decontaminate industrial and drinking water employing an organic matrix such as nanocelullose beads.

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Long-term hexavalent chromium exposure facilitates colorectal cancer in mice associated with changes in gut microbiota composition

Cited by 78 publications

References 48 publications

Remediation of Chromium-Contaminated Soil Based on Bacillus cereus WHX-1 Immobilized on Biochar: Cr(VI) Transformation and Functional Microbial Enrichment

Remediation of Chromium-Contaminated Soil Based on Bacillus cereus WHX-1 Immobilized on Biochar: Cr(VI) Transformation and Functional Microbial Enrichment

Metal-Metal Hip Prosthesis and Kidney Cancer: Assumed Role of Chromium and Cobalt Overload

Remediation of contaminated water with Chromium VI by sorption in surface-activated-nanocellulose

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