Food Science & Nutrition
·
2025
·Vol. 13
·期 11
·e71248
·
IF 3.8
Liu Tang,Ruzhen Peng,Jingyi Guo,Chun Wang,Tianshuai Wang,Yindi Bao,Ying He
Atopic dermatitis (AD), a chronic, relapsing, inflammatory skin disease often accompanied by psychiatric comorbidities like anxiety and depression, poses significant therapeutic challenges. This study aims to explore the therapeutic effects and mechanisms of dietary supplementation with epigallocatechin‐3‐gallate (EGCG) on AD skin lesions and comorbid anxiety/depressive disorders through in vivo and in vitro experiments. Macroscopical and histopathological evaluation revealed that gavage administration of EGCG (50 or 100 mg/kg) significantly improved AD skin lesions, as evidenced by the reduced dermatitis severity scores, TEWL value and blood flow perfusion, and diminished infiltration of inflammatory and mast cells ( p < 0.05 or p < 0.01). In EPM and OFT, EGCG‐treated mice displayed markedly decreased anxiety and depressive‐like behaviors, as manifested by the increased frequency of entries and distance traveled in the open arms and the central area, and elevated 5‐HT levels in serum/brain ( p < 0.05 or p < 0.01). Additionally, compared to the AD model group, EGCG administration reduced MDA content and ROS accumulation in serum/brain/skin, while enhancing GSH‐Px and CAT activity ( p < 0.05 or p < 0.01). Flow cytometry analysis further demonstrated that EGCG could suppress the generation of ROS in TNF‐α/IFN‐γ‐stimulated NHEK cells. Mechanistically, by virtue of in vivo, in vitro and in silico assays, the results of western blot, immunofluorescence and molecular docking discovered that EGCG could promote Nrf2 nuclear translocation and ultimately reduce oxidative stress, at least in part, by specifically targeting Keap1 to disrupt the interaction of Keap1/Nrf2 and modulation of the Keap1/Nrf2/HO‐1 axis. These aforementioned findings highlight the potential of EGCG as a promising therapeutic strategy for AD and its psychiatric comorbidities by alleviating Keap1/Nrf2/HO‐1‐mediated oxidative stress. Administration of EGCG attenuates atopic dermatitis (AD)‐like skin manifestations. EGCG ameliorates AD‐associated behavioral deficits by altering the HPA axis dysfunction and upregulating the neurotransmitters. Down‐regulation of Keap1/Nrf2/HO‐1 signaling pathway‐mediated oxidative stress might be the crucial mechanism for EGCG against AD‐like phenotype accompanied by psychological disorders.
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DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 31
·1-11
·
IF 2.8
Li Shanshan,Zhang Duo,Tian Zhongqing,Wang Fei,Meng Fancheng
Ba[(Zn 0.6 Mg 0.4 ) 1/3 Nb (2- x )/3 Sb x /3 ]O 3 (BZMNS, x = 0.15, 0.2, 0.25, 0.3, 0.35) ceramics were synthesized by the conventional solid-state reaction method. The crystal structure and microwave dielectric properties of the ceramics were investigated. X-ray diffraction (XRD) analysis revealed that the BZMNS ceramics exhibit a cubic perovskite structure. The crystal structures were refined, and no secondary phases were detected in all compositions. The doping of Sb 5+ hinders grain growth, and the average grain size first increases and then decreases with the increase of the x value. The dielectric constant shows a downward trend due to the influence of the ionic bond character of B-site ions and the B-site Rattling effect. The packing fraction is the main factor affecting the Q × f value of BZMNS ceramics. As the x value increases, the temperature coefficient of the resonant frequency ( τ f ) gradually decreases. Ion polarizability dilution is the primary mechanism for regulating τ f of BZMNS ceramics. The BZMNS ceramics sintered at 1480 °C with x = 0.3 exhibit optimal microwave dielectric properties ( ε r = 31.44, Q × f = 62,273 GHz (at f₀ = 6.5 GHz), τ f = + 2.48 ppm·°C −1 ), indicating that this ceramic has good application prospects.
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高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2025
·
IF 6.2
Bin Ma,Jiafeng Niu,Hao Zhu,Huibing Chi,Zhaoxin Lu,Fengxia Lu,Ping Zhu
Aldo-keto reductase is responsible for the formation of nontoxic 3-epi-deoxynivalenol (3-epi-DON) from 3-keto-DON, which is an enzymatic detoxification manner to completely eliminate the toxicity of mycotoxin DON against health and environmental threats. Therefore, unlocking the facilitated substrate specificity of aldo-keto reductase for 3-keto-DON has become a critical challenge for advanced catalytic performance. In this endeavor, a loop-based engineering strategy was developed for aldo-keto reductase AKR13B3 from Devosia A6–243 to catalyze 3-keto-DON. A 31.9-fold switch from a disfavored substrate to the preferred one was produced along with a significant 37.9-fold increase in catalytic efficiency. Kinetic parameter determinations, structural analyses, and molecular simulations were employed to elucidate the molecular mechanisms underlying these enhancements in catalytic activity and substrate specificity. Overall, our work presents a feasible scheme for designing aldo-keto reductases with exceptional substrate specificity and catalytic activity, holding great promise for developing enzymatic detoxification agents.
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DOI
PubMed
高影响因子
JOURNAL OF POWER SOURCES
·
2021
·
IF 9.127
Xiaochen Wang,Hualong Ma,Hanqing Peng,Yingming Wang,Gongwei Wang,Li Xiao,Juntao Lu,Lin Zhuang
H 2 –O 2 polymer electrolyte fuel cells (PEFCs) represent one of the most promising next generation renewable energy conversion technologies. Two of the remaining unsolved key issues relate to inefficient mass transport and water management when working at high current densities . These problems arise from the structure of the existing flow fields and gas diffusion layers (GDLs), as well as the counter propagating flow directions of gas reactants and liquid products. To address these issues, we propose a novel design of an integrated flow field-gas diffusion layer ( i -FF-GDL) generated by 3D printing of TiH 2 followed by high temperature decomposition . In this new i -FF-GDL design, a porous Ti “bone” structure is used to drive water transport through capillary action , while regularly printed gaps transport gases. Benefiting from the separate gas and liquid flow channels, APEFCs using our i -FF-GDL design exhibit up to a 15% increase in peak power density (PPD) under H 2 -air (CO 2 free) and H 2 –O 2 conditions, when compared to traditional APEFCs. Operando electrochemical impedance spectroscopy (EIS) reveals that the enhanced performance arises largely from an increase in the mass transport. This work provides new insights and strategies for achieving high efficiency mass transport for fuel cells, water electrolyzers and related technologies.
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高影响因子
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
·
2019
·
IF 1.479
Jialiang Chen,Lirong Fu,Yan Li,Xiaodeng Yang,Beibei Wang,Chunlin Xu,Tianduo Li
To illuminate the interactions in N-[(2-hydroxyl)-propyl-3-trimethyl ammonium] chitosan chloride (HTCC)/sodium carboxymethyl cellulose (CMC) based films, the film-forming solutions were studied by rheology, and HTCC/CMC based films were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy and thermogravimetric analysis. The HTCC/CMC based film-forming solutions with glycerol (polyvinyl alcohol (PVA) and anthocyanin) showed shear-thinning behavior. The apparent viscosity of the HTCC/CMC/glycerol (PVA and anthocyanin) film-forming solutions decreased slower than that of HTCC/CMC film-forming solution, due to the electrostatic interaction between HTCC and CMC, and hydrogen bonding interaction between the two biomacromolecules and glycerol, PVA and anthocyanin, which resulted in the formation of three-dimensional networks. The anthocyanin with rigid molecular structure formed different three-dimensional matrix with HTCC/CMC, resulted in viscosity dominated film-forming solution. The pH affected the electrostatic interaction between HTCC, CMC, and anthocyanin through neutralizing –COO− groups, and temperature showed a synergistic effect on both electrostatic interaction and hydrogen bonding. The inter-molecular interactions resulted in the red-shift of typical absorption peaks, and the increase of initial decomposition temperature and decomposition enthalpy of HTCC/CMC based films. The homogenous and smooth surface, and the compact texture of HTCC/CMC based films confirmed the intermolecular interaction between HTCC, CMC, and PVA (glycerol and anthocyanin).
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高影响因子
Catalysts
·
2022
·Vol. 12
·期 7
·685
·
IF 4.501
Hao Dong,Cheng-Hua Xu,Fang-Lu Yang,Lei Du,Chen-Long Liu,Wen-Jing Chen,Lin Wang
Ca–Zr–Sn composite oxides catalysts for 1,4-butanediol (BDO) selective dehydration to 3-butene-1-ol (BTO) are synthesized by impregnation and co-precipitation in the present work. The results show that Ca–Zr–Sn catalysts prepared from co-precipitation by using NaOH-Na2CO3mixing alkali solution as precipitant exhibit an excellent catalytic property for BDO dehydration to BTO. For instance, Ca–Zr–Sn oxide with Ca/Zr and Sn/Zr molar ratio of 0.68 and 0.28 calcined at 650 °C gives a BDO conversion and BTO selectivity of about 97% and 82%, respectively, and exhibits no deactivation during 1000 h scale-up experimental testing. X-ray diffraction results indicate that catalytic active centers for BDO dehydration to BTO are from Ca0.15Zr0.85O crystal phase. NH3- and CO2-temperature programmed desorption prove that the surface of obtained catalysts can provide a large amount of acid and base sites simultaneously. FT-IR spectra of pyridine-adsorbed samples show that acid sites on the surface of Ca–Zr–Sn oxide catalyst mainly exist in a state of Lewis acid, which activates terminal -OH groups of BDO molecule through complexing. The activated -OH interacts with β-H activated on base sites O2−anions relative to Ca species, thereby the CH2=CH- bonds are produced through dehydration to form BTO.
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高影响因子
JOURNAL OF STRUCTURAL CHEMISTRY
·
2022
·Vol. 63
·期 6
·845-853
·
IF 1.004
Chen X.,Gao R. -L.,Li B.,Wang H. -M.
Abstract Reaction of SmCl 3 ·6H 2 O with 3 equiv. of dihydroxodiphenylarsonium chloride [Ph 2 As(OH) 2 ]Cl resulted in the first structurally characterized lanthanide complex of organoarsinate [Sm(μ-O 2 AsPh 2 ) 3 ]. Single crystal X-ray diffraction reveals that this complex belongs to the trigonal system, \(R\bar{3}\) space group, with a = 24.077(3) Å, b = 24.077(3) Å, c = 10.708(1) Å, β = 120°, V = 5375.8(1) Å 3 and Z = 6. This homoleptic compound features a 1D polymer arrangement in which two Sm atoms are bridged by three diphenylarsinate [Ph 2 AsO 2 ] – ligands under syn,syn μ 2 –η 1 :η 1 bridging mode. The coordination number of Sm center is 6, giving an almost perfect octahedron geometry. The antibacterial activity of [Sm(μ-O 2 AsPh 2 ) 3 ] is much weaker than the free ligand [Ph 2 As(OH) 2 ]Cl.
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高影响因子
FOOD HYDROCOLLOIDS
·
2022
·
IF 11.504
Shan Qian,Lin Chen,Zhengshan Zhao,Xiaojing Fan,Xinglian Xu,Guanghong Zhou,Beiwei Zhu,Niamat Ullah,Xianchao Feng
Ovalbumin (OVA), is the most abundant protein in the egg white. In the present study, the effects of Epigallocatechin-3-gallate (EGCG) on the self-assembly behavior and gelling properties of OVA with different heating time were investigated. Electrophoresis , surface hydrophobicity, Fourier transform infrared (FTIR) spectroscopy and molecular docking analysis indicated that hydrophobic force and hydrogen bond were the predominant interactions between EGCG and OVA. The binding of EGCG to OVA suppressed the formation of fibrils as evidenced by the results of Thioflavin T (ThT) intensity and atomic force microscopy (AFM) analysis. When heated for 15–30 min, EGCG addition, especially at 2.5 μM/g, resulted in a decrease of ThT fluorescence intensity and hydrophobicity of OVA samples, and a formation of dense linear aggregates. However, the OVA solution did not form a gel. In a longer heating time of 45 min, 5 μM/g EGCG induced a significant decrease in ThT fluorescence intensity and hydrophobicity of OVA samples, and a transition from the dense linear aggregates to the dense spherical clusters. Therefore, the OVA samples realized the transition from the solution state to the gel state with a higher storage modulus (G′). When the heating time was extended to 60 min, all the OVA samples formed gel and reached the highest G′ at 5 μM/g EGCG. These results suggested that the suitable hydrophobic interactions and hydrogen bonds between EGCG and the OVA improved gel quality. Polyphenol binding provided a new way to regulate the assembly behavior and gelling properties of OVA.
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2020
·
IF 5.162
Yini Liu,Debao Wang,Zhilan Sun,Fang Liu,Lihui Du,Daoying Wang
In this study, antibacterial nanofiber films were prepared by electrospinning gelatin, chitosan, and 3-phenyllactic acid (PLA). The addition of PLA improved the microstructures of the nanofibers, and the nanofiber films (GCP-1 and GCP-2) had uniform and continuous structures with a diameter range of 40‐–70 nm when the PLA concentrations in the polymers were 1% and 2%. Under acidic conditions, chitosan and PLA interacted and formed hydrogen bonds , which decreased the crystallinity of the nanofiber films. The GCP-2 nanofiber film had the best thermal stability , water stability, and water vapor permeability. Compared with the control GCP-0 film, the four nanofiber films with PLA (GCP-1, GCP-2, GCP-3, and GCP-4) had more effective antibacterial effects, and GCP-2 film reduced approximately 4 log CFU/mL of Salmonella enterica Enteritidis and Staphylococcus aureus in 30 min. Results suggested that the GCP-2 nanofiber film mat can be used as an active food packaging.
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高影响因子
ChemElectroChem
·
2019
·Vol. 6
·期 17
·4681-4688
·
IF 3.975
Yu Huang,Rengui Xiao,Zhiming Ma,Weichen Zhu
Graphical In sync : The 1-ethyl-3-methylimidazolium trifluoromethanesulfonate (EMImTfO) dual-graphite battery exhibits a high discharge plateau above 3.0 V, which originates from the synchronized de-intercalations of EMIm + and TfO − from the graphite cathode and anode, respectively. The battery can light up a red LED with 3.0 V standard voltage. In this work, a novel dual-graphite battery (DGB) based on a pure 1-ethyl-3-methylimidazolium trifluoromethanesulfonate (EMImTfO) ionic liquid electrolyte is constructed. Within a charge/discharge voltage range of 1.0–3.9 V and at a current of 400 mA g −1 , batteries with dual-natural-graphite electrodes exhibit a high discharge plateau above 3.0 V with an initial discharge capacity of 46.2 mAh g −1 , delivering a capacity retention of 71.0 % after 100 cycles. Comparative studies between the natural graphite and the synthetic graphite (KS6) electrodes are also conducted. Charge-discharge tests reveal that the dual natural-graphite battery presents a higher discharge voltage plateau and better retention than the dual KS6-graphite battery. To confirm the principle of the dual-graphite systems, a cyclic voltammetry test is conducted. The results demonstrate that the EMIm + cation exhibits an even more stable intercalation/de-intercalation behavior than the TfO − anion. Further tests, including ex situ X-ray diffraction and ex situ Raman spectroscopy, are performed to reveal the mechanism of TfO − and EMIm + intercalation into graphite, both demonstrating a reversible process.
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高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2018
·
IF 3.235
Xiaoming Chen,Mingdi Yang,Qishu Qu,Qingchun Zhao,Wensheng Zou
The synthesis and electrochromic properties of a novel regiosymmetric polymer based on 3,4-ethylenedioxythiophene, poly(2,3-bis(bromomethyl)-2,3-dihydrothieno[3,4-b][1,4]dioxine) (PEDOT(MeBr) 2 ) were highlighted. The monomer was electrochemically polymerized via repetitive cycling between 0 and 1.8 V in lithium perchlorate (LiClO 4 )–acetonitrile (ACN) electrolytic medium. The corresponding polymer was characterized by FTIR spectra, scanning electron microscopy, cyclic voltammetry , UV–Vis-NIR spectroscopy and colorimetry . It features a reversible redox process and demonstrates a stable blue-to-transmissive electrochromic behavior with very low driving potentials (−0.1 and 0.65 V). Additionally the polymer film exhibits enhanced optical contrast (60% at 669 nm) and improved coloration efficiency (183.1 cm 2 /C at 100% full contrast during bleaching process) which are higher than those of PEDOT, a relatively longer response time compared with PEDOT and reasonable redox stability.
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高影响因子
JOURNAL OF POWER SOURCES
·
2016
·
IF 6.333
Xiaolei Jiang,Huayun Xu,Hongzhi Mao,Jian Yang,Yitai Qian
Disordered surface of anode materials accompanied by oxygen vacancies , has been developed as an efficient strategy to promote their charge-transfer kinetics and then improve their electrochemical properties . It is rarely explored for cathode materials before. Here, LiTi 2- x Mn x (PO 4- y ) 3 nanoparticles with a disordered surface and oxygen vacancies , are synthesized by a hydrothermal method following with an annealing in Ar/H 2 . Their disordered surface and heteroatom doping by reduced Mn/Ti species, have been supported by HRTEM images, XPS and EDS spectra. After 120 cycles at 0.2 C, these nanoparticles still deliver a capacity of 127 mAh g −1 , much higher than the product without any doping, and that without a disordered surface. Even after 500 cycles, the capacity is still at 101 mAh g −1 for 5 C or at 71 mAh g −1 for 20 C. These results could be attributed to the reduced charge-transfer resistance caused by disordered surface, and the enhanced lithium-diffusion induced by doping.
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高影响因子
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