BMC Complementary Medicine and Therapies
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2023
·Vol. 23
·期 1
·1-11
·
IF 3.9
Yi Zhirong,Jia Qingling,Wang Yujiao,Zhang Yuqin,Xie Tianyi,Ling Jianghong
Background Precancerous lesions of gastric cancer (PLGC) refer to a kind of histopathological changes in the gastric mucosa that can progress to gastric cancer. Elian granules (ELG), a Chinese medicinal prescription, have achieved satisfactory results in the treatment of PLGC. However, the exact mechanism underlying the therapeutic effect of ELG remains unclear. Here, this study aims to explore the mechanism of ELG alleviating PLGC in rats.Methods The chemical ingredients of ELG were analyzed using ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS). Specific Pathogen Free SD rats were randomly assigned to 3 groups: the control, model, and ELG groups. The 1-Methyl-3-nitro-1-nitrosoguanidine (MNNG) integrated modeling method was adopted to construct the PLGC rat model in groups except for the control group. Meanwhile, normal saline was used as an intervention for the control and model groups, and ELG aqueous solution for the ELG group, lasting 40 weeks. Subsequently, the stomach of rats was harvested for further analysis. Hematoxylin-eosin staining of the gastric tissue was conducted to assess the pathological changes. Immunofluorescence was carried out for the expression of CD68, and CD206 proteins. Real-time quantitative PCR combined with Western blot was conducted to analyze the expression of arginase-1(Arg-1), inducible nitric oxide synthase (iNOS), p65, p-p65, nuclear factor inhibitor protein-α (IκBα), and p-IκBα in gastric antrum tissue.Results Five chemical ingredients including Curcumol, Curzerenone, Berberine, Ferulic Acid, and 2-Hydroxy-3-Methylanthraquine were identified in ELG. The gastric mucosal glands of rats treated with ELG were orderly arranged, with no intestinal metaplasia and no dysplasia. Furthermore, ELG decreased the percentage of M2-type TAMs marked with CD68 and CD206 proteins, and the ratio of Arg-1 to iNOS in the gastric antrum tissue of rats with PLGC. In addition, ELG could also down-regulate the protein and mRNA expression of p-p65, p65, and p-IκBα, but up-regulate the expression of IκBα mRNA in rats with PLGC.Conclusion sThe results showed that ELG attenuates PLGC in rats by suppressing the M2-type polarization of tumor-associated macrophages (TAMs) through NF-κB signaling pathway.
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高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2023
·Vol. 415
·期 19
·4753-4766
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IF 4.3
Sun Yue,Ma Su,Wang Hanyu,Wang Huili,Gao Ming,Wang Xuedong
Herein, we fabricated blue-fluorescence carbon quantum dots modified by ionic liquids (ILs-CQDs) with a quantum yield of 18.13% by employing orange peel as a carbon source and [BMIM][H 2 PO 4 ] as a dopant. The fluorescence intensities (FIs) of ILs-CQDs were significantly quenched upon the addition of MnO 4 − with excellent selectivity and sensitivity in waters, and this phenomenon provided a feasibility for constructing a sensitive “ON–OFF” fluoroprobe. The prominent overlapping between the maximum excitation/emission of ILs-CQDs and the UV–Vis absorption of MnO 4 − implied an inner filter effect (IFE). The higher K q value demonstrated that the fluorescence-quenching phenomenon was a static-quenching process (SQE). Coordination between MnO 4 − and oxygen/amino-rich groups in ILs-CQDs resulted in the alteration of zeta potential in the fluorescence system. Consequently, the interactions between MnO 4 − and ILs-CQDs belong to a joint mechanism of IFE and SQE. When plotting the FIs of ILs-CQDs vs. the concentrations of MnO 4 − , a satisfactorily linear correlation was obtained across the range of 0.3–100 μM with a detectable limit of 0.09 μM. This fluoroprobe was successfully applied to detect MnO 4 − in environmental waters with satisfactory recoveries of 98.05–103.75% and relative standard deviations (RSDs) of 1.57–2.68%. Also, it gave more excellent performance metrics as compared to the Chinese standard indirect iodometry method and other previous approaches for MnO 4 − assay. Overall, these findings offer a new avenue to engineer/develop a highly efficient fluoroprobe based on the combination of ILs and biomass-derived CQDs for the rapid/sensitive detection of metal ions in environmental waters.
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Scientific Reports
·
2023
·Vol. 13
·期 1
·1-12
·
IF 4.6
Song Jie,Wan Yating,Yang Chen,Deng Qiuju,Cui Yingde,Yan Zhihong,Liu Yi
In this paper, a novel composite is constructed as a non-enzymatic hydrogen peroxide (H 2 O 2 ) sensor by liquid-phase exfoliation method, which is composed of copper oxide, cuprous oxide and silver nanoparticles doped few-layer-graphene (Cu x O/Ag@FLG). Its surface morphology and composition were characterized by scanning electron microscopy (SEM) and X-ray photo spectroscopy (XPS), and its H 2 O 2 sensing performances include catalytic reduction and quantitative detection were studied with electrochemical methods. Our sensor had a high sensitivity of 174.5 μA mM −1 cm −2 (R 2 = 0.9978) in an extremely wide range of concentrations from 10 μM to 100 mM, a fast response (about 5 s) and a low limit of detection (S/N = 3) of 2.13 μM. The sensor exhibits outstanding selectivity in the presence of various biological interference, such as dopamine, ascorbic acid, uric acid, citric acid, etc. In addition, the constructed sensor continued 95% current responsiveness after 1 month of storage further points to its long-term stability. Last but not least, it has a good recovery rate (90.12–102.00%) in milk sold on the open market, indicating that it has broad application possibilities in the food industry and biological medicine.
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CELLULOSE
·
2023
·Vol. 30
·期 7
·4373-4385
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IF 5.7
Zhang Tianyi,Song Baiqing,Yang Jie,Yuan Binbin,Ma Jianhua
Multifunctional films have potential applications in smart wearable devices and portable electronic products. Yet, it is always a challenge to ensure these materials simultaneously to have flexible, strong, and functional properties during the material preparation process. Herein, bacterial cellulose/polydopamine modified by MXene (BC/PM) multi-layer films is prepared by vacuum-assisted self-assembly. The micromorphology, phase composition, and application performance of this composite film were systematically characterized. The mechanical properties test indicates that the BC/PM multi-layer film exhibits an excellent reinforcement effect. The tensile strength and elongation of the three-layer BC/PM film reach 181.6 MPa and 8.9%, respectively. For multifunctional applications, the BC/PM multi-layer film shows remarkable electric heating and excellent photothermal properties, for example, it can be heated up to 85 °C at a constant voltage of 6 V for 20 s, and its temperature can increase from room temperature to 90 ℃ after 250 W infrared lamp is irradiated for 30 s. Furthermore, the sample has potential high sensitivity and high response speed to humidity changes. This research will provide a data basis and theoretical reference for the practical application of bacterial cellulose-based multifunctional films.
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CELLULOSE
·
2023
·Vol. 30
·期 7
·4353-4371
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IF 5.7
Wang Peiwen,Chen Congjin,Shen Hangyu,Wei Jinrou,Lan Yi,Liao Xiufen,Fan Hui,Hu Huayu,Zhang Yanjuan,Huang Zuqiang
Ciprofloxacin (CIP) contamination can induce the growth of antibiotic-resistant bacteria, which poses a great threat to the environment. Herein, a composite adsorbent material, sodium lignosulfonate/chitosan@ZIF-8 (SLS/CS@ZIF-8), was synthesized by introducing sodium lignosulfonate into chitosan foams (CS-FM) and then loading ZIF-8 onto the resulting foams (SLS/CS-FM) by in situ immobilization to effectively remove CIP from water. The adsorption behaviour and mechanism were studied through batch experiments and characterization analysis. The results showed that the maximum adsorption capacity of SLS/CS@ZIF-8 was 413 mg/g with a CIP concentration of 250 mg/L at 303 K, which was more than most previously reported adsorbents. The CIP adsorption of SLS/CS@ZIF-8 was better described by the pseudosecond-order kinetic model and Langmuir isothermal model. The adsorption was a spontaneous and endothermic physical adsorption process with increased entropy. The adsorption involved electrostatic interactions, hydrogen bonding interactions and π-π interactions. This work provides a potential adsorbent for the effective removal of CIP from wastewater and a new, low-carbon, green chemical technology for the high-value utilization of lignin.
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CELLULOSE
·
2023
·Vol. 30
·期 6
·3837-3852
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IF 5.7
Zhang Lihua,Feng Song,Huang Furong,Li Bo,Li Yunqi,Sheng Hailiang,Hu Lijie,Liang Songmiao,Xie Haibo
Well-dispersed gold nanoparticles (Au NPs) anchored by polymeric three-dimensional hydrogels for catalysis have received great attention, especially in aqueous-phase catalysis. In this study, thiol-functionalized chitosan poly(protic ionic liquids) hydrogel (TCPPILH) is delicately designed and prepared as a selective support material to anchor Au NPs by taking advantages of Au-thiol chemistry and facile preparation of protic ionic liquids (PILs). The TCPPILH was successfully synthesized by a protonation reaction of chitosan with 3-mercaptopropionic acid (MPA) and mercaptosuccinic acid (MSA) in water, and followed by shaping in ethanol coagulation bath via solution-gelation transition, and the properties can be facilely adjusted by changing the feed ratio of MPA and MSA. It is found that the TCPPILH can act as a selective support for adsorption of Au 3+ ions, and a maximal anchoring capacity for Au NPs could reach up to 151.5 mg/g. The as-prepared TCPPILH @ Au NPs catalysts were systematically characterized by FTIR, XPS, SEM, TEM, XRD and ICP-OES analysis, and the findings demonstrated that the TCPPILH could effectively inhibit the agglomeration of Au NPs (ca. 4.20 nm in diameter). As a proof of concept, hydrogenation of water pollutes, such as 4-nitrophenol and azo dyes with NaBH 4 as reductant was selected as model applications, and the results indicated that TCPPILH @ Au NPs catalysts exhibited high catalytic activity and satisfactory reusability. Graphical abstract
Thiol-functionalized chitosan poly(protic ionic liquids) hydrogel (TCPPILH) was delicately designed and prepared as a selective support material to adsorb Au 3+ and anchoring Au NPs by taking advantages of Au-thiol chemistry and facile preparation of protic ionic liquids (PILs). This TCPPILH@Au NPs catalysts exhibited desired catalytic activity for the hydrogenation of 4-nitrophenol and azo dyes in water.
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Nature Communications
·
2023
·Vol. 14
·期 1
·1-11
·
IF 16.6
Huang Zengqi,Li Lin,Wu Tingqing,Xue Tangyue,Sun Wei,Pan Qi,Wang Huadong,Xie Hongfei,Chi Jimei,Han Teng,Hu Xiaotian,Su Meng,Chen Yiwang,Song Yanlin
In a flexible perovskite solar cell, the bottom interface between perovskite and the electron-transporting layer is critical in determining its efficiency and reliability. High defect concentrations and crystalline film fracturing at the bottom interface substantially reduce the efficiency and operational stability. In this work, a liquid crystal elastomer interlayer is intercalated into a flexible device with the charge transfer channel toughened by the aligned mesogenic assembly. The molecular ordering is instantly locked upon photopolymerization of liquid crystalline diacrylate monomers and dithiol-terminated oligomers. The optimized charge collection and the minimized charge recombination at the interface boost the efficiency up to 23.26% and 22.10% for rigid and flexible devices, respectively. The liquid crystal elastomer-induced suppression of phase segregation endows the unencapsulated device maintaining >80% of the initial efficiency for 1570 h. Moreover, the aligned elastomer interlayer preserves the configuration integrity with remarkable repeatability and mechanical robustness, which enables the flexible device to retain 86% of its original efficiency after 5000 bending cycles. The flexible solar cell chips are further integrated into a wearable haptic device with microneedle-based arrays of sensors to demonstrate a pain sensation system in virtual reality.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2023
·Vol. 34
·期 7
·1-13
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IF 2.8
Yu Haichao,Chen Xuan,Zhou Jie,Wang Hui
Zn-ion hybrid capacitors (ZIHCs) have been deemed a promising candidate for energy storage equipment to overcome the primary drawback of supercapacitors—low energy density. Herein, inspired by the laminated structure of chitin fibrils, molten salt strategy is proposed to engineer functional carbon as cathode material for ZIHCs, for the first time. Orthogonal design was adopted to ascertain the optimum synthetic conditions for the chitin-derived NaCl-templated and NaNO 3 -activated carbons (CNNs). The resultant C2NN1-800-1-5 possesses high surface area of 1256 m 2 g −1 and rich surface heteroatom content of 11.3 at%, as well as numerous thin intertwined nanofibre bundles. Associated with the synergy of surface capacitive reaction and diffusion battery behavior, the Zn//ZnSO 4 ( aq , 2 M)//C2NN1-800-1-5 ZIHC can be conducted in a relatively broad potential window ranging from 0 to 1.8 V and manifests remarkable energy density of 133.4 Wh kg −1 at 180 W kg −1 . Moreover, charge/discharge cycling further revealed that this device can retain 100% of its initial capacity, together with almost 100% coulombic efficiency after 10,000 cycles at 6 A g −1 . The study emphasizes the green synthesis of heteroatom-doped hierarchical porous carbon cathode material, notably facilitating the rapidly increasing popularity of Zn-ion hybrid energy storage devices.
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RARE METALS
·
2023
·Vol. 42
·期 6
·1899-1911
·
IF 8.8
Li Zhao,Xie Cheng-Jia,Ren Xiao-Wei,Zhang Qun,Ma Bao-Jin
Nanoenzyme-mediated antibacterial strategies have been widely exploited to overcome the shortcomings (such as drug resistance and mild-to-severe side effects) of antibiotic therapy. The peroxidase-like activity of nanoenzymes possesses great potential against bacterial infection by the generation of hydroxyl radical (·OH) in the specific microenvironment. However, the lifetime of ·OH is extremely short, and a large amount of the ·OH generated within the infection microenvironment cannot come into contact with bacteria quickly enough, thus resulting in low treatment efficiency. Here, chitosan-oligosaccharide-modified CuS nanoparticles possessing positive charges (PCuS NPs) were prepared using a one-pot method. PCuS NPs exhibited efficient peroxidase-like activity. Importantly, the PCuS NPs can combine with bacteria via electrostatic attraction. The direct contact between the PCuS NPs and bacteria enabled the generation of ·OH in situ on the bacterial surface, ultimately leading to a high antibacterial efficacy at a low concentration in the presence of H 2 O 2 . At an effective antibacterial concentration, the PCuS NPs exhibited high cytocompatibility. Furthermore, in vivo results revealed that PCuS NPs not only decreased the size of abscesses but also reduced inflammation and promoted collagen fiber formation. Therefore, PCuS NPs possess great potential against bacterial infection via in situ ·OH generation based on electrostatic attraction. Graphical abstract
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JOURNAL OF NANOBIOTECHNOLOGY
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2023
·Vol. 21
·期 1
·1-16
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IF 10.2
Li Juanjuan,Gong Chunai,Chen Xinlu,Guo Huanhuan,Tai Zongguang,Ding Nan,Gao Shen,Gao Yuan
Background Doxorubicin (Dox) has been recommended in clinical guidelines for the standard-of-care treatment of breast cancer. However, Dox therapy faces challenges such as hypoxia, acidosis, H2O2-rich conditions and condensed extracellular matrix in TME as well as low targeted ability.Methods We developed a nanosystem H-MnO2-Dox-Col NPs based on mesoporous manganese dioxide (H-MnO2) in which Dox was loaded in the core and collagenase (Col) was wrapped in the surface. Further the H-MnO2-Dox-Col NPs were covered by a fusion membrane (MP) of inflammation-targeted RAW264.7 cell membrane and pH-sensitive liposomes to form biomimetic MP@H-MnO2-Dox-Col for in vitro and in vivo study.Results Our results shows that MP@H-MnO2-Dox-Col can increase the Dox effect with low cardiotoxicity based on multi-functions of effective penetration in tumor tissue, alleviating hypoxia in TME, pH sensitive drug release as well as targeted delivery of Dox.Conclusion sThis multifunctional biomimetic nanodelivery system exhibited antitumor efficacy in vivo and in vitro, thus having potential for the treatment of breast cancer.
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Nature Communications
·
2023
·Vol. 14
·期 1
·1-13
·
IF 16.6
Wang Yu,Wang Tairan,Bu Shuyu,Zhu Jiaxiong,Wang Yanbo,Zhang Rong,Hong Hu,Zhang Wenjun,Fan Jun,Zhi Chunyi
Aqueous zinc metal batteries are appealing candidates for grid energy storage. However, the inadequate electrochemical reversibility of the zinc metal negative electrode inhibits the battery performance at the large-scale cell level. Here, we develop practical ampere-hour-scale aqueous Zn metal battery pouch cells by engineering the electrolyte solution. After identifying the proton reduction as the primary source of H 2 evolution during Zn metal electrodeposition, we design an electrolyte solution containing reverse micelle structures where sulfolane molecules constrain water in nanodomains to hinder proton reduction. Furthermore, we develop and validate an electrochemical testing protocol to comprehensively evaluate the cell’s coulombic efficiency and zinc metal electrode cycle life. Finally, using the reverse micelle electrolyte, we assemble and test a practical ampere-hour Zn||Zn 0.25 V 2 O 5 •nH 2 O multi-layer pouch cell capable of delivering an initial energy density of 70 Wh L −1 (based on the volume of the cell components), capacity retention of about 80% after 390 cycles at 56 mA g −1 cathode and ~25 °C and prolonged cycling for 5 months at 56 mA g −1 cathode and ~25 °C.
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JOURNAL OF ELECTRONIC MATERIALS
·
2023
·Vol. 52
·期 7
·4564-4574
·
IF 2.1
Lu Jingmin,Qian Haoran,Ge Lei,Zhang Zhongcheng,Hao Hequn,Xu Zezhong,Yu Tingting,Li Minghua,Tian Changan,Xie Jinsong
In this paper, Ag/TiO 2 composites with different Ag doping ratios (0.5%, 1%, 2% and 3%) were prepared by a one-pot solvothermal method without post calcination. Glycine promoted the formation of rod-like TiO 2 growing along the (101) plane and introduced Ag nanoparticles (NPS) onto the surface of TiO 2 . A series of characterization tests, including x-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HR-TEM), x-ray photoelectron spectroscopy (XPS), UV–Vis diffuse reflectance spectroscopy (DRS), photoluminescence (PL) spectroscopy, nitrogen adsorption and desorption measurement, and electrochemical measurements were employed. The measurements confirmed that the formed Ag/TiO 2 nanorod composite with 1% Ag loading ratio (Ag/TiO 2 -1), consisting of length up to 22 nm and Ag nanoparticles (NPS) with a diameter of about 5.5 nm, had an appropriate energy band gap of 2.95 eV and a large specific surface area of 158.3 m 2 /g, which shows that the Ag/TiO 2 -1 has abundant photocatalytic active sites to increase its visible-light absorption ability. The Ag/TiO 2 -1 sample has the highest photocatalytic efficiency, with up to 95% and 98% degradation for tetracycline (TC) and Rhodamine B (RhB), respectively, in 25 min under simulated solar light. After the sixth cycle experiment, Ag/TiO 2 -1 still maintained 94% and 95% degradation of TC and RhB, respectively. The trapping active species experiment confirmed that the hole (h + ) and superoxide radical \(\left( { \cdot {\text{O}}_{2}^{ - } } \right)\) are the main active species. This work has practical significance for the simultaneous study of the photocatalysis of Ag/TiO 2 composites for dyes (RhB) and antibiotics (TC).
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危险品化学品经营许可证（带存储）