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Zinc lactate alleviates oxidative stress by modulating crosstalk between constitutive androstane receptor signaling pathway and gut microbiota profile in weaned piglets

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Animal Nutrition 2024年第1期16卷 23-33页

作者： Wenjie Tang Xuan Xiang Houfu Wang Wentao Zhou Liuqin He Yulong Yin Tiejun Li College of Animal Science and Technology Hunan Agricultural UniversityChangsha 410128China Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process CAS Key Laboratory of Agro-Ecological Processes in Subtropical RegionNational Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry ProductionInstitute of Subtropical AgricultureChinese Academy of SciencesChangsha 410125China Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation Laboratory of Animal Nutrition and Human HealthCollege of Life SciencesHunan Normal UniversityChangsha 410081China College of Advanced Agricultural Science University of Chinese Academy of SciencesBeijing 100049China Sichuan Academy of Animal Sciences Animal Breeding and Genetics Key Laboratory of Sichuan ProvinceChengdu 610066China Livestock and Poultry Biological Products Key Laboratory of Sichuan Province Sichuan Animtech Feed Co.LtdChengdu 610000China

This study aimed to determine the regulatory mechanism of dietary zinc lactate(ZL)supplementation on intestinal oxidative stress damage in a paraquat(PQ)-induced piglet ***-eight piglets(mean body weight 9.51±0.23 kg)weaned at 28 d of age were randomly divided into control,ZL,PQ,and ZL+PQ groups(n=7 in each group).The ZL-supplemented diet had little effect on growth performance under normal physiological ***,under PQ challenge,ZL supplementation significantly improved average daily gain(P<0.05)and reduced the frequency of *** improved intestinal morphology and ultrastructure by significantly increasing the expression level of the jejunal tight junction protein,zonula occludens-1(ZO-1)(P<0.05),and intestinal zinc transport and absorption in PQ-induced piglets,which reduced intestinal *** supplementation also enhanced the expression of antioxidant and antiinflammatory factor-related genes and decreased inflammatory cytokine expression and secretion in PQinduced ***,ZL treatment significantly inhibited the activation of constitutive androstane receptor(CAR)signaling(P<0.01)in PQ-induced piglets and altered the structure of the gut microbiota,especially by significantly increasing the abundance of beneficial gut microbes,including UCG_002,Ruminococcus,Rikenellaceae_RC9_gut_group,Christensenellaceae_R_7_group,Treponema,unclassified_Christensenellaceae,and unclassified_Erysipelotrichaceae(P<0.05).These data reveal that pre-administration of ZL to piglets can suppress intestinal oxidative stress by improving antioxidant and anti-inflammatory capacity and regulating the crosstalk between CAR signaling and gut microbiota.

关键词： Zinc lactate Intestinal barrier Oxidative stress Inflammation Constitutive androstane receptor Gut microbiota

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Dosage- and site-dependent retention of black carbon and polycyclic aromatic hydrocarbons in farmland soils via long-term biochar addition

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Carbon Research 2024年第1期3卷 1-14页

作者： Zhang, Jun Wang, Yinghui Shi, Yameng Yang, Biwei Zhang, Aiping Du, Zhangliu Zhong, Guangcai Luo, Chunling Zhang, Gan Wang, Junjian Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control School of Environmental Science and Engineering Southern University of Science and Technology Guangdong Shenzhen518055 China State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control School of Environmental Science and Engineering Southern University of Science and Technology Guangdong Shenzhen518055 China Institute of Environment and Sustainable Development in Agriculture Chinese Academy of Agricultural Sciences Beijing100081 China College of Resources and Environmental Sciences China Agricultural University Beijing100193 China State Key Laboratory of Organic Geochemistry and Guangdong-Hongkong-Macao Joint Laboratory for Environmental Pollution and Control Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou510640 China

Biochar, a soil conditioner containing significant amounts of polycyclic aromatic hydrocarbons (PAHs), has gained widespread popularity in agricultural practices due to its advantages in improving soil fertility and carbon sequestration. While biochar may increase soil black carbon (BC) and PAH contents, the quantitative accumulation of BC and PAHs in different soil environments under varying biochar addition dosages remains poorly understood. Here, we investigated the content and composition of black carbon (evaluated using benzene polycarboxylic acids, BPCAs) and PAHs in soils treated with different biochar addition dosages from two long-term experimental farmlands in Ningxia (5-year) and Shandong (7- and 11-year), China. Results showed that increasing cumulative biochar dosage caused elevated contents of black carbon and PAHs, accompanied by decreases in their retention efficiencies. Contrasting retention was observed between sites, with the Shandong site characterized by higher retention efficiencies of BPCAs and lower retention efficiencies of PAHs, possibly owing to its higher temperature, more sandy soil texture, less irrigation, and lower sunlight intensity. Despite both black carbon and PAHs originating from biochar and sharing similar condensed aromatic structures, there was no significant correlation between the contents of black carbon and PAHs, indicating distinct behaviors and fates of these compounds. These findings emphasize the importance of optimizing biochar addition dosages and considering site-specific environmental factors for effective soil black carbon sequestration through biochar application. Graphical Abstract: (Figure presented.) © The Author(s) 2024.

关键词： Aromatization

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The acid dissolution characteristics of cadmium fixed by a novel Ca-Fe-Si composite material

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Journal of Environmental Sciences 2023年第5期127卷 328-335页

作者： Aijun Yao Xiang Guo Man Zhao Shizhong Wang Yetao Tang Rongliang Qiu School of Geography and Planning Sun Yat-sen UniversityGuangzhou 510275China School of Environmental Science and Engineering Sun Yat-sen UniversityGuangzhou 510275China Guangdong Provincial Key Lab of Environmental Pollution Control and Remediation Technology Sun Yat-sen UniversityGuangzhou 510275China Guangdong Provincial Key Laboratory of Agricultural&Rural Pollution Abatement and Environmental Safety College of Natural Resources and EnvironmentSouth China Agricultural UniversityGuangzhou 510642China Guangdong Laboratory for Lingnan Modern Agriculture Guangzhou 510642China

Ca-Fe-Si material(CIS),a novel composite material rich in calcium,iron,manganese and silicon showed marvelous immobilization properties for heavy metal(loid)s in *** elucidate the acid stability of Cd fixed by CIS(CIS-Cd)and the underlying immobilizationmechanisms,the acid dissolution characteristics of CIS-Cdwere investigated by using acid titration method and X-ray diffraction(XRD)*** results showed that CIS-Cd had distinctive acid buffering capacity in different pH *** on the titration curve between dissolution rate of CIS-Cd and pH,CIS-Cd can be divided into non acid-stable Cd(9.4%),moderately acid-stable Cd(22.5%)and acid-stable Cd(68.1%).XRD analysis of CIS-Cd at different pH intervals and the correlation curves of dissolution rates of Cd and concomitant elements indicated that non acid-stable Cdwas mainly bound by carbonate,silicate and sulfate(CdCO_(3),Cd_(2)SiO_(4) and CdSO_(4))or co-precipitated with the corresponding calcium *** acid-stable Cd was mainly bound by magnesium-aluminum-silicon containing minerals or electrically bound bymanganese iron ***-stable Cd remaining undissolved at pH<2.42 included CdFe_(2)O_(4) and ferromanganese minerals strongly bound *** was by multilateral fixation mechanisms that Ca-Fe-Si material possessed marvelous immobilization capability for Cd and strong resilience to environmental acidification as *** findings implicated that proper combination of calcium-iron-silicon containing minerals could develop novel promising amendments with high efficiency in heavy metal(loid)s immobilization and strong resilience to environmental change.

关键词： Ca-Fe-Si composite material Acid stability Cadmium Immobilization mechanisms

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Cloud-based smartphone-assisted chemiluminescent assay for rapid screening of electroactive bacteria

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Science China(Technological Sciences) 2023年第3期66卷 743-750页

作者： WEN JunLin HE DaiGui LUO SongQing ZHOU ShunGui YUAN Yong Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control School of Environmental Science and EngineeringInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China College of Artificial Intelligence Guangdong Mechanical&Electrical PolytechnicGuangzhou 510550China Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation College of Resources and EnvironmentFujian Agriculture and Forestry UniversityFuzhou 350002China

Electroactive bacteria(EAB)can transfer electrons to exocellular solid acceptors and have widespread applications in the fields of pollutant degradation,biosynthesis,and hydrogen *** EAB screening methods can precisely measure the bacterial extracellular electron transfer ability,but they suffer from time-consuming and labor-intensive *** chemiluminescence technique is effective for the rapid detection of hemoglobin but has not been applied for EAB ***,we utilized a chemiluminescent assay to identify EAB through a multiheme c-type cytochrome(c-Cyt)triggered chemiluminescent *** multiheme c-Cyts-triggered chemiluminescence was conveniently determined by taking photographs with commercial smartphones and cloud-based *** acquired image signal shows a significant and linear relationship with the bacterial *** results of the chemiluminescence intensity triggered by different bacterial species with the proposed method are strongly associated with those of the microplate reading method(Pearson’s r of 0.9795;P<0.01)and dissimilatory Fe(Ⅲ)reduction method(Pearson’s r of 0.9628;P<0.01).Furthermore,this cloud-based and smartphone-assisted chemiluminescent assay is instrument-free and easy to operate,and results can be obtained within 2 *** findings demonstrate that the proposed method can effectively detect ***,it will be an alternative approach for EAB screening and can have promising applications in microbiology,environmental science,and bioenergy.

关键词： electroactive bacteria c-type cytochrome chemiluminescence cloud computing smartphone

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Interactions between H_(2)O_(2)and dissolved organic matter during granular activated carbon-based residual H_(2)O_(2)quenching from the upstream UV/H_(2)O_(2)process

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Journal of Environmental Sciences 2023年第6期128卷 139-149页

作者： Yaoyao Kang Junfeng Lian Yichun Zhu Zuwen Liu Wentao Li Huiyu Dong Yuanyue Wang Jinfeng Zeng Zhimin Qiang Jiangxi Provincial Key Laboratory of Environmental Geotechnology and Engineering Disaster Control Jiangxi University of Science and TechnologyGanzhou 341000China Ganzhou Key Laboratory of Basin Pollution Simulation and Control Jiangxi University of Science and TechnologyGanzhou 341000China Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China CECEP Environmental Protection Investment Development(Jiangxi)Co.Ltd. Nanchang 330006China Hydrology and Water Resources Monitoring Center for Ganjiang Upstream Watershed Ganzhou 341000China

Granular activated carbon(GAC)filtration can be employed to synchronously quench residual H_(2)O_(2)from the upstream UV/H_(2)O_(2)process and further degrade dissolved organicmatter(DOM).In this study,rapid small-scale column tests(RSSCTs)were performed to clarify the mechanisms underlying the interactions between H_(2)O_(2)and DOM during the GAC-based H_(2)O_(2)quenching *** was observed that GAC can catalytically decompose H_(2)O_(2),with a long-lasting high efficiency(>80%for approximately 50,000 empty-bed volumes).DOM inhibited GAC-based H_(2)O_(2)quenching via a pore-blocking effect,especially at high concentrations(10 mg/L),with the adsorbed DOM molecules being oxidized by the continuously generated·OH;this further deteriorated the H_(2)O_(2)quenching *** batch experiments,H_(2)O_(2)could enhance DOM adsorption by GAC;however,in RSSCTs,it deteriorated DOM *** observation could be attributed to the different·OH exposure in these two *** was also observed that aging with H_(2)O_(2)and DOM altered the morphology,specific surface area,pore volume,and the surface functional groups of GAC,owing to the oxidation effect of H_(2)O_(2)and·OH on the GAC surface as well as the effect of ***-tionally,the changes in the content of persistent free radicals in the GAC samples were insignificant following different aging *** work contributes to enhancing understanding regarding the UV/H_(2)O_(2)-GAC filtration scheme,and promoting the application in drinking water treatment.

关键词： Granular activated carbon H_(2)O_(2)quenching Dissolved organic matter Rapid small-scale column tests Persistent free radicals

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Alterations in nutrient digestibility and performance of heat-stressed dairy cows by dietary L-theanine supplementation

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Animal Nutrition 2022年第4期11卷 350-358页

作者： Lingyuan Yang Lingmei Zhang Peihua Zhang Yuli Zhou Xingguo Huang Qiongxian Yan Zhiliang Tan Shaoxun Tang Fachun Wan College of Animal Science and Technology Hunan Agricultural UniversityChangshaHunan 410128China CAS Key Laboratory of Agro-Ecological Processes in Subtropical Region National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry ProductionHunan Provincial Key Laboratory of Animal Nutrition&Physiology and MetabolismInstitute of Subtropical AgricultureChinese Academy of SciencesChangshaHunan 410125China Shandong Provincial Key Laboratory of Livestock and Poultry Disease Prevention and Breeding JinanShandong 250000China

The purpose of this study was to investigate the effects of dietary L-theanine supplementation on apparent nutrient digestibility,milk yield,milk composition,and blood biochemical indices of dairy cows under heat *** Chinese Holstein cows(19.84±2.42 kg milk/d,192.36±40.77 d in milk and2±0.93 parities)were divided into 3 groups of 10 animals *** control group was fed a basal total mixed ration(TMR)diet,while treatment 1(LTA16)and treatment 2(LTA32)groups were fed a basal TMR diet supplemented with L-theanine at 16 and 32 g/cow per day,*** results showed that feeding the dairy cows with LTA16 treatment decreased(P<0.05)their rectal temperature,whereas feeding with LTA32 treatment decreased(P<0.05)their rumen fluid ammonia nitrogen *** comparison to the control group,the supplementation of L-theanine had no significant effect(P>0.05)on the dry matter intake,nutrient digestibility,total volatile fatty acid(TVFA)concentration and molar proportion of volatile fatty acid,milk yield,milk composition,feed efficiency and antioxidant capacity of the dairy *** triglyceride(TG)content of the LTA32 group was significantly greater(P=0.014)than that of the control *** the increase in L-theanine dosage,the serum cholesterol(CHOL)content significantly increased(P=0.013).The serum albumin(ALB;P=0.067),low-density lipoprotein cholesterol(LDL-C;P=0.053),and high-density lipoprotein cholesterol(HDL-C;P=0.067)contents showed an upward trend as L-theanine dosage ***,the results of this study show that supplementing dairy cow diet with L-theanine could decrease dairy cow rectal temperature,affect lipid metabolism,and potentially relieve the heat stress of dairy cows to some extent.

关键词： Cow Heat stress L-Theanine Nutrient digestibility Production performance Rumen fermentation

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Fabrication of Ce-doped macroporous carbon fibers for efficient degradation of tetracycline by activating persulfate

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Journal of Rare Earths 2025年第3期43卷 480-489,I0003页

作者： Chaohai Wang Taiyang Cao Zheng Lv Rongfu Peng Yanli Mao Jinhui zhang Xinfeng Zhu Junning Wang Ke Zhao Gangfu Song Henan Key Laboratory of Water Pollution Control and Rehabilitation Technology School of Municipal and Environmental EngineeringHenan University of Urban ConstructionPingdingshan467036China School of Environmental and Municipal Engineering North China University of Water Resources and Electric PowerZhengzhou40000China School of Light Industry&Chemical Engineering Dalian Polytechnic UniversityDalian116034China Henan Provincial Development and Reform Commission Zhengzhou450016China

Metal-organic frameworks(MOFs)and their derivatives have gained significant attention in recent years for their ability to catalyze the advanced oxidation of ***-doped MOFs,in particular,have shown promise due to their high catalytic efficiency,practical applicability,and ***,their structure,catalytic properties,and mechanisms are not yet fully ***-8 was chosen as the raw material to prepare cerium-doped hollow carbon nano fibers(Ce-HCNFs)using the electrostatic spinning-calcination *** objective is to investigate the structure,catalytic performance,and catalytic mechanism of *** results show that Ce-HCNFs catalyzed the degradation of tetracycline(TC)by persulfate up to 76.9%,Quenching experiments and electron paramagnetic resonance experiments indicate the dominant role of single-linear ***,the experiments on the influence factor and cycling demonstrate the exceptional stability and recycling capability of Ce-HCNFs in real-world water environments.

关键词： Cerium Metal-organic frameworks Electrospinning Tetracycline Persulfate Rare earths

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Optimized the vanadium electrolyte with sulfate-phosphoric mixed acids to enhance the stable operation at high-temperature

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Frontiers of Chemical Science and Engineering 2024年第2期18卷 13-26页

作者： Ling Ge Tao Liu Yimin Zhang Hong Liu School of Resource and Environmental Engineering Wuhan University of Science and TechnologyWuhan 430081China State Environmental Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control Wuhan University of Science and TechnologyWuhan 430081China Hubei Collaborative Innovation Center for High Efficient Utilization of Vanadium Resources Wuhan University of Science and TechnologyWuhan 430081China Hubei Provincial Engineering Technology Research Center of High Efficient Cleaning Utilization for Shale Vanadium Resource Wuhan University of Science and TechnologyWuhan 430081China School of Resource and Environmental Engineering Wuhan University of TechnologyWuhan 430070China

Herein, the influence of the concentration design and comprehensive performance of the sulfate-phosphoric mixed acid system electrolyte is investigated to realize an electrolyte that maintains high energy density and stable operation at high temperatures. Static stability tests have shown that VOPO4 precipitation occurs only with vanadium(V) electrolyte. The concentration of vanadium ion of 2.0–2.2 mol·L^(–1), phosphoric acid of 0.10–0.15 mol·L^(–1), and sulfuric acid of 2.5–3.0 mol·L^(–1) are suitable for a vanadium redox flow battery in the temperature range from –20 to 50 ℃. The equations for predicting the viscosity and conductivity of electrolytes are obtained by the response surface method. The optimized electrolyte overcomes precipitation generation. It has 2.8 times higher energy density than the non-phosphate electrolyte, and a coulomb efficiency of 94.0% at 50 ℃. The sulfate-phosphoric mixed acid system electrolyte promotes the electrode reaction process, increases the current density, and reduces the resistance. This work systematically optimizes the concentrations of composition of positive and negative vanadium electrolytes with mixed sulfate-phosphoric acid. It provides a basis for the different valence states and comprehensive properties of sulfate-phosphoric mixed acid system vanadium electrolytes under extreme environments, guiding engineering applications.

关键词： all vanadium redox flow battery mixed-acid vanadium electrolyte concentration optimization response surface methodology high-temperature stability

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Efficiency,mechanism and microbial community of Cd(Ⅱ)removal by mixed bacteria enriched from heavy metals mine soil

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Transactions of Nonferrous Metals Society of China 2022年第10期32卷 3404-3419页

作者： Tao-tao ZENG Xiao-ling ZHANG Hai-du NONG Qing HU Liang-qin WANG Ai-jie WANG Hunan Provincial Key Laboratory of Pollution Control and Resources Reuse Technology University of South ChinaHengyang 421001China Key Laboratory of Environmental Biotechnology Chinese Academy of SciencesBeijing 100085China

Mixed bacteria were enriched from heavy metals mine soil for cadmium(Cd(Ⅱ))-containing wastewater treatment. Batch adsorption experiment results showed that the optimal pH, temperature, initial Cd(Ⅱ) concentration, and biomass dosage were 6.0, 30 ℃, 20 mg/L, and 1 g/L, respectively. Living biomass exhibited better Cd(Ⅱ) removal efficiency(91.97%) than autoclaved biomass(79.54%) under optimal conditions. The isotherms and kinetics of living biomass conformed to the Langmuir isotherm model and pseudo-first-order kinetic model, respectively. FTIR results implied that amine groups, hydroxyl groups and phosphoric acid play an important role in the Cd(Ⅱ) adsorption process, while XRD results showed that crystalline Cd(OH)and CdO were obtained. After Cd(Ⅱ)-containing wastewater treatment exposure, the dominant bacteria genera included Comamonas(39.94%), unclassified_f__Enterobacteriaceae(34.96%), Ochrobactrum(14.07%), Alcaligenes(4.84%), Bordetella(2.07%), Serratia(1.04%), and Bacillus(1.01%). Function prediction showed that the abundance of metabolic genes changed significantly. This study proposes the potential application of mixed bacteria for Cd(Ⅱ)-containing wastewater treatment.

关键词： Cd(Ⅱ) wastewater treatment bacterial community function prediction

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Design of copper oxide and oxygen codoped graphitic carbon nitride activator for efficient radical and nonradical activation of peroxymonosulfate

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Chinese Chemical Letters 2023年第6期34卷 184-190页

作者： Lin Wei Jialing Li Chengyun Zhou Biao Song Fanzhi Qin Wenjun Wang Hanzhuo Luo Deyu Qin Cheng Huang Chen Zhang Yang Yang College of Environmental Science and Engineering Hunan University and Key Laboratory of Environmental Biology and Pollution ControlMinistry of Education(Hunan University)Changsha 410082China School of Design Hunan UniversityChangsha 410082China School of Resources and Environment Hunan University of Technology and BusinessChangsha 410205China Department of Chemical and Materials Engineering University of AlbertaEdmontonAlberta T6G 1H9Canada

Rational regulation of stable graphitic carbon nitride(CN)for superior peroxymonosulfate(PMS)activation is important in the catalytic degradation of water *** this work,the copper oxide and oxygen co-doped graphitic carbon nitride(Cu O/O-CN)was prepared via one-step synthesis and applied in activating PMS for oxytetracycline(OTC)degradation,displaying superior catalytic *** characterization and theoretical calculations indicated that the synergistic effect between the oxygen site of CN and CuO can modulate the electronic structure of the whole composite further facilitating the formation of non-radical^(1)O_(2)and various reactive *** of the influencing factor experiments revealed that CuO/O-CN has a strong resistance to the environmental *** degradation efficiency of OTC in the real water environment even exceeded that in the deionized *** four successive runs of the optimal catalyst,the OTC removal rate was still as high as 91.3%.This work developed a high-efficiency PMS activator to remove refractory pollutants via both radical pathway and non-radical pathway,which showed a promising potential in the treatment of wastewaters.

关键词： Graphitic carbon nitride Codoping Peroxymonosulfate Antibiotics Advanced oxidation process

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