Probiotics Pediococcus acidilactici GR-1 promotes the functional strains and remodels gut microbiota to reduce the Cr(VI) toxicity in a dual-chamber simulated intestinal system
Chemosphere. 2024 Apr 7:141927. doi: 10.1016/j.chemosphere.2024.141927. Online ahead of print.ABSTRACTNumerous animal studies have demonstrated the toxicity of hexavalent chromium [Cr(VI)] and the bioremediative effects of probiotics on the composition and functions of gut microbiota. Since the precise mechanisms of Cr(VI) detoxification and its interactions with human gut microbiota were unknown, a novel dual-chamber simulated intestinal (DCSI) system was developed to maintain both the stability of the simulated system and the composition of the gut microbiota. Probiotic GR-1 was found to regulate intestinal gut microbiot...
Source: Chemosphere - April 9, 2024 Category: Chemistry Authors: Xing Wang Zemin Wang Shaochen Su Ying Wu Jingjing Fan Xiaoxiao Hou Kunyue Zhang El-Sayed Salama Saurabh Kulshrestha Zhenmin Ling Pu Liu Xiangkai Li Source Type: research
Probiotics Pediococcus acidilactici GR-1 promotes the functional strains and remodels gut microbiota to reduce the Cr(VI) toxicity in a dual-chamber simulated intestinal system
Chemosphere. 2024 Apr 7:141927. doi: 10.1016/j.chemosphere.2024.141927. Online ahead of print.ABSTRACTNumerous animal studies have demonstrated the toxicity of hexavalent chromium [Cr(VI)] and the bioremediative effects of probiotics on the composition and functions of gut microbiota. Since the precise mechanisms of Cr(VI) detoxification and its interactions with human gut microbiota were unknown, a novel dual-chamber simulated intestinal (DCSI) system was developed to maintain both the stability of the simulated system and the composition of the gut microbiota. Probiotic GR-1 was found to regulate intestinal gut microbiot...
Source: Chemosphere - April 9, 2024 Category: Chemistry Authors: Xing Wang Zemin Wang Shaochen Su Ying Wu Jingjing Fan Xiaoxiao Hou Kunyue Zhang El-Sayed Salama Saurabh Kulshrestha Zhenmin Ling Pu Liu Xiangkai Li Source Type: research
Socio-demographic inequalities influence differences in the chemical exposome among Swedish adolescents
Environ Int. 2024 Mar 31;186:108618. doi: 10.1016/j.envint.2024.108618. Online ahead of print.ABSTRACTRelatively little is known about the relationship between socio-demographic factors and the chemical exposome in adolescent populations. This knowledge gap hampers global efforts to meet certain UN sustainability goals. The present work addresses this problem in Swedish adolescents by discerning patterns within the chemical exposome and identify demographic groups susceptible to heightened exposures. Enlisting the Riksmaten Adolescents 2016-17 (RMA) study population (N = 1082) in human-biomonitoring, and using proportional...
Source: Environment International - April 9, 2024 Category: Environmental Health Authors: Sebastian Pineda Sanna Lignell Irina Gyllenhammar Erik Lampa Jonathan P Benskin Thomas Lundh Christian Lindh Hannu Kiviranta Anders Glynn Source Type: research
Leachability of hexavalent chromium from fly ash-marl mixtures in Sarigiol basin, Western Macedonia, Greece: environmental hazard and potential human health risk
The objective of this study is the investigation of Cr (VI) concentration in leachates of fly ash and marl mixtures and the determination of its solubility under different pH conditions. Samples of fly ash were collected from the Power Plant of Agios Dimitrios. Additionally, samples of marl were collected from the mine of South Field, and both samples were mixed and prepared in in different proportions (% w.t.). The leaching experiments were carried out according to the EN-12457/1-4 (2003) standard under different pH conditions and chemical analysis of the leachates were performed by spectrophotometry with diphenylcarbazid...
Source: Environmental Geochemistry and Health - April 9, 2024 Category: Environmental Health Source Type: research
In situ carbothermal synthesis of carbonized bacterial cellulose embedded with nano zero-valent iron for removal of Cr(VI)
Int J Biol Macromol. 2024 Apr 6:131445. doi: 10.1016/j.ijbiomac.2024.131445. Online ahead of print.ABSTRACTCarbonized bacterial cellulose embedded with highly dispersed nano zero-valent iron (nZVI), denoted as nZVI@CBC, was prepared through one-step in situ carbothermal treatment of bacterial cellulose adsorbing iron(III) nitrate. The structure characteristics of nZVI@CBC and its performance in removing hexavalent chromium Cr(VI) were investigated. Results showed the formation of nZVI@CBC with a surface area of 409.61 m2/g at 800 °C, with nZVI particles of mean size 28.2 nm well distributed within the fibrous network of C...
Source: International Journal of Biological Macromolecules - April 8, 2024 Category: Biochemistry Authors: Bo Ma Yan Wang Jianguo Zhu Dan Liu Chuntao Chen Bianjing Sun Source Type: research
Distribution and bioaccumulation of trace elements in two Cyprinidae fish species in the Indus river, Pakistan, including the impact of hydraulic structure on macroinvertebrates' biodiversity
Environ Res. 2024 Apr 4:118882. doi: 10.1016/j.envres.2024.118882. Online ahead of print.ABSTRACTThe concentration of trace elements (chromium, lead, zinc, copper, manganese, and iron) was determined in water, sediment and tissues of two Cyprinidae fish species - Labeo rohita and Tor putitora - collected from the eight sampling stations of Indus River in 2022 for four successive seasons (autumn, winter, spring, summer), and also study the present condition of macroinvertebrates after the construction of hydraulic structure. The obtained results of trace element concentrations in the Indus River were higher than the accepta...
Source: Environmental Research - April 6, 2024 Category: Environmental Health Authors: Muhammad Waseem Boota Shan-E-Hyder Soomro Haoming Xia Yaochen Qin Mian Adnan Kakakhel Chaode Yan Luo Weiran Jikun Xu Source Type: research
Distribution and bioaccumulation of trace elements in two Cyprinidae fish species in the Indus river, Pakistan, including the impact of hydraulic structure on macroinvertebrates' biodiversity
Environ Res. 2024 Apr 4:118882. doi: 10.1016/j.envres.2024.118882. Online ahead of print.ABSTRACTThe concentration of trace elements (chromium, lead, zinc, copper, manganese, and iron) was determined in water, sediment and tissues of two Cyprinidae fish species - Labeo rohita and Tor putitora - collected from the eight sampling stations of Indus River in 2022 for four successive seasons (autumn, winter, spring, summer), and also study the present condition of macroinvertebrates after the construction of hydraulic structure. The obtained results of trace element concentrations in the Indus River were higher than the accepta...
Source: Environmental Research - April 6, 2024 Category: Environmental Health Authors: Muhammad Waseem Boota Shan-E-Hyder Soomro Haoming Xia Yaochen Qin Mian Adnan Kakakhel Chaode Yan Luo Weiran Jikun Xu Source Type: research
Tris buffer-accelerated ligand exchange rate for instant fluorescence detection of trivalent chromium ion
In this study, we report that the good's buffers containing amino and polyhydroxy groups greatly increase the ligand exchange rate of Cr3+. Using EDTA as a model coordinate ligand, the Tris buffer (100 mM, pH 7.0) showed the best acceleration effect among the eight buffers. It improved the rate constant ∼20-fold, shorten the half-time 19-fold, and lowered the activation energy ∼70% at 40 °C. The Tris buffer was then applied for sensor based on the Cr3+-binding induced fluorescence quenching of fluorescein (FAM)-labeled and single-stranded DNA (ssDNA), which shortened the assay time from 1 h to 1 min. The Tris buffer a...
Source: Analytica Chimica Acta - April 5, 2024 Category: Chemistry Authors: Nan Wang Qianni Gao Xiaoqi Li Jinming Li Xinhui Lou Source Type: research
Integrated assessment of potentially toxic elements in soil of the Kangdian metallogenic province: A two-point machine learning approach
This study explored a comprehensive approach that combinescombines the spatial prediction by the two-point machine learning method and ecological-health risk assessment to quantitatively assess the comprehensive potential ecological risk index (PERI), the total hazard index (THI) and the total carcinogenic risk (TCR). The proportions of copper (Cu), cadmium (Cd), manganese (Mn), lead (Pb), zinc (Zn), and arsenic (As) concentrations exceeding the risk screening values (RSVs) were 15.03%, 5.1%, 3.72%, 1.24%, 1.1%, and 0.13%, respectively, across the 725 collected samples. Spatial prediction revealed elevated levels of As, Cd...
Source: Ecotoxicology and Environmental Safety - April 5, 2024 Category: Environmental Health Authors: Wantao Yang Liankai Zhang Bingbo Gao Xiaojie Liu Xingwu Duan Chenyi Wang Ya Zhang Qiang Li Lingqing Wang Source Type: research
Exposure of the general French population to metals and metalloids in 2014-2016: Results from the Esteban study
CONCLUSIONS: Esteban provided a nationwide description of 28 metal and metalloid exposure levels for adults (some never measured before) and for the first time in children. The study results highlighted widespread exposure to several metals and metalloids. These results could be used to advocate public health decisions for continued efforts to reduce harmful exposure to toxic metals. The Reference values (RV95) built from Esteban could also be used to support future government strategies.PMID:38579993 | DOI:10.1016/j.envres.2024.118744 (Source: Environmental Research)
Source: Environmental Research - April 5, 2024 Category: Environmental Health Authors: Amivi Oleko Abdessattar Saoudi Abdelkrim Zeghnoun Marie Pecheux Vincent Cirimele Ciprian Mihai Cirtiu G éraldine Berail Emmanuelle Szego S ébastien Denys Cl émence Fillol Source Type: research
Tris buffer-accelerated ligand exchange rate for instant fluorescence detection of trivalent chromium ion
In this study, we report that the good's buffers containing amino and polyhydroxy groups greatly increase the ligand exchange rate of Cr3+. Using EDTA as a model coordinate ligand, the Tris buffer (100 mM, pH 7.0) showed the best acceleration effect among the eight buffers. It improved the rate constant ∼20-fold, shorten the half-time 19-fold, and lowered the activation energy ∼70% at 40 °C. The Tris buffer was then applied for sensor based on the Cr3+-binding induced fluorescence quenching of fluorescein (FAM)-labeled and single-stranded DNA (ssDNA), which shortened the assay time from 1 h to 1 min. The Tris buffer a...
Source: Analytica Chimica Acta - April 5, 2024 Category: Chemistry Authors: Nan Wang Qianni Gao Xiaoqi Li Jinming Li Xinhui Lou Source Type: research
Tris buffer-accelerated ligand exchange rate for instant fluorescence detection of trivalent chromium ion
In this study, we report that the good's buffers containing amino and polyhydroxy groups greatly increase the ligand exchange rate of Cr3+. Using EDTA as a model coordinate ligand, the Tris buffer (100 mM, pH 7.0) showed the best acceleration effect among the eight buffers. It improved the rate constant ∼20-fold, shorten the half-time 19-fold, and lowered the activation energy ∼70% at 40 °C. The Tris buffer was then applied for sensor based on the Cr3+-binding induced fluorescence quenching of fluorescein (FAM)-labeled and single-stranded DNA (ssDNA), which shortened the assay time from 1 h to 1 min. The Tris buffer a...
Source: Analytica Chimica Acta - April 5, 2024 Category: Chemistry Authors: Nan Wang Qianni Gao Xiaoqi Li Jinming Li Xinhui Lou Source Type: research
Tris buffer-accelerated ligand exchange rate for instant fluorescence detection of trivalent chromium ion
In this study, we report that the good's buffers containing amino and polyhydroxy groups greatly increase the ligand exchange rate of Cr3+. Using EDTA as a model coordinate ligand, the Tris buffer (100 mM, pH 7.0) showed the best acceleration effect among the eight buffers. It improved the rate constant ∼20-fold, shorten the half-time 19-fold, and lowered the activation energy ∼70% at 40 °C. The Tris buffer was then applied for sensor based on the Cr3+-binding induced fluorescence quenching of fluorescein (FAM)-labeled and single-stranded DNA (ssDNA), which shortened the assay time from 1 h to 1 min. The Tris buffer a...
Source: Analytica Chimica Acta - April 5, 2024 Category: Chemistry Authors: Nan Wang Qianni Gao Xiaoqi Li Jinming Li Xinhui Lou Source Type: research
Tris buffer-accelerated ligand exchange rate for instant fluorescence detection of trivalent chromium ion
In this study, we report that the good's buffers containing amino and polyhydroxy groups greatly increase the ligand exchange rate of Cr3+. Using EDTA as a model coordinate ligand, the Tris buffer (100 mM, pH 7.0) showed the best acceleration effect among the eight buffers. It improved the rate constant ∼20-fold, shorten the half-time 19-fold, and lowered the activation energy ∼70% at 40 °C. The Tris buffer was then applied for sensor based on the Cr3+-binding induced fluorescence quenching of fluorescein (FAM)-labeled and single-stranded DNA (ssDNA), which shortened the assay time from 1 h to 1 min. The Tris buffer a...
Source: Analytica Chimica Acta - April 5, 2024 Category: Chemistry Authors: Nan Wang Qianni Gao Xiaoqi Li Jinming Li Xinhui Lou Source Type: research
Tris buffer-accelerated ligand exchange rate for instant fluorescence detection of trivalent chromium ion
In this study, we report that the good's buffers containing amino and polyhydroxy groups greatly increase the ligand exchange rate of Cr3+. Using EDTA as a model coordinate ligand, the Tris buffer (100 mM, pH 7.0) showed the best acceleration effect among the eight buffers. It improved the rate constant ∼20-fold, shorten the half-time 19-fold, and lowered the activation energy ∼70% at 40 °C. The Tris buffer was then applied for sensor based on the Cr3+-binding induced fluorescence quenching of fluorescein (FAM)-labeled and single-stranded DNA (ssDNA), which shortened the assay time from 1 h to 1 min. The Tris buffer a...
Source: Analytica Chimica Acta - April 5, 2024 Category: Chemistry Authors: Nan Wang Qianni Gao Xiaoqi Li Jinming Li Xinhui Lou Source Type: research
