PHARMACEUTICAL RESEARCH
·
2022
·Vol. 39
·期 9
·2263-2276
·
IF 4.58
He Xiaoshuang,Wei Yuanfeng,Wang Shiru,Zhang Jianjun,Gao Yuan,Qian Shuai,Pang Zunting,Heng Weili
Honokiol (HK), a BCS class II drug with a wide range of pharmacological activities, has poor solubility and low oral bioavailability, severely limiting its clinical application. In the current study, incorporating a water-soluble meglumine (MEG) into the crystal lattice of HK molecule was performed to improve its physicochemical properties. The binary mixture of HK and MEG was obtained by anti-solvent method and characterized by TGA, DSC, FTIR, and PXRD. The SCXRD analysis showed that two HK − molecules and two MEG + molecules were coupled in each unit cell via the ionic interaction along with intermolecular hydrogen bonds, suggesting the formation of a salt, which was further confirmed by the XPS measurements. However, the ∆pK a value between HK and MEG was found to be less than 1, which did not follow the oft-quoted ∆pK a rule for salt formation. After salification with MEG, the solubility and dissolution rate of HK exhibited 3.50 and 25.33 times improvement than crystalline HK, respectively. Simultaneously, the powder flowability, tabletability and stability of HK-MEG salt was also significantly enhanced, and the salt was not more hygroscopic, and that salt formation did not compromise processability in that regard. Further, in vivo pharmacokinetic study showed that C max and AUC 0-t of HK-MEG salt were enhanced by 2.92-fold and 2.01-fold compared to those of HK, respectively, indicating a considerable improvement in HK oral bioavailability.
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高影响因子
JOURNAL OF MATERIALS RESEARCH
·
2022
·Vol. 37
·期 11
·1835-1844
·
IF 2.909
Yang Meng,Zhou Guangyan,Wei Yajuan,Huang Zhengguo,Zhang Jingbo
The catalytic activity of quaternary Cu 2 ZnSnS 4 (CZTS) as counter electrode (CE) of dye-sensitized solar cells (DSSCs) was enhanced by covering Co 9 S 8 on CZTS thin film prepared by the spin-coating method. The effect of the repeating number of spin coating process on morphologies and catalytic properties of CZTS thin films was investigated. When the repeating number of spin coating processes is 3, the CZTS thin film thickness is moderate and the formed nanoparticles are tightly bound. The conversion efficiency of DSSC based on the CZTS thin film CE prepared by 3 spin coating cycles reaches 4.79%. By forming a CZTS/Co 9 S 8 composite electrode via vulcanizing the deposited ZIF-67, the highest photoelectric conversion efficiency of DSSC based on the optimized composite CE further reaches 6.41%. The higher photoelectric conversion efficiency is attributed to the good interfacial transferring of electrons and redox properties for electrolyte of the composite CE. Graphical abstract
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高影响因子
ANALYTICAL SCIENCES
·
2022
·Vol. 38
·期 7
·989-1002
·
IF 1.967
Zeng Qingli,Zhong Hui,Zhang Tianci,Huang Zhiqin,Li Laisheng
A large π-conjugated perylenediimide bridged bis (β-cyclodextrin)-bonded stationary phase (PBCDP) was first prepared and characterized. The chiral HPLC performance was systematically evaluated using a series of chiral probes. The results showed that PBCDP could resolve 36 kinds of chiral compounds in reversed-phase and polar organic modes with high resolutions ( R s) 1.48–3.28 for profens, 1.25–2.85 for triazoles, 1.34–5.29 for flavanones, 1.66–4.58 for amino acids and 1.22–1.97 for β-blockers. Especially, PBCDP could completely resolve acidic non-steroidal chiral drugs (profens) and simultaneously resolve basic five triazole pesticides, which were difficult to separate by ordinary CDCSP. Compared with CDCSP (15 kinds), the new stationary phase has a wider resolution range (36 kinds). Obviously, the synergistic inclusion of the two cavities of bridged cyclodextrin, as well as the large π–π stacking, hydrogen bond, dipole–dipole and basic primary amine site (–NH–) provided by the perylenediimide bridging group contributed together to the improvement of the above chiral separations. PBCDP was a new type of versatile chiral separation material without port derivatization. Graphical abstract
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高影响因子
Advanced Fiber Materials
·
2022
·Vol. 4
·期 5
·1191-1208
·
IF 12.958
Zhao Chenxi,Liu Yawen,Lv Zhuochen,Cao Leitao,Ren Jing,Shao Zhengzhong,Ling Shengjie
Abstract Producing lightweight, mechanically strong, ductile, and biocompatible materials remains a significant challenge in material engineering due to the conflict between structural and mechanical features. Inspired by the “brick-and-mortar” structure of nacre, a construction with a naturally optimized structure-performance-function relationship, this study developed silk fibroin (SF) nacre as a silk protein-based nacre by integrating ice-templating and thermoplastic molding techniques. SF nacres are similar to natural nacre in microstructure, and their strength and toughness are even superior to natural nacres. These mechanical properties permit machining by extreme processing techniques, such as ion beam lithography. Furthermore, SF nacre can be used to modulate the polarization of laser beams and generate bright structural colors. Biocompatibility, mechanical robustness, good processability, and tunable coloration allow SF nacres to be used as a plastic replacement for structural engineering and biomedical use, showing promising advancement of such implantable devices towards clinical translation. Graphical Abstract
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Journal of Superconductivity and Novel Magnetism
·
2022
·Vol. 35
·期 9
·2473-2484
·
IF 1.675
Li Pengwei,Li Jie,Zhang Wenhao,Wang Yonglun,Yao Kai
Pr-doped M-type barium ferrite with a composition of Ba 1− x Pr x Fe 12 O 19 (0.00 < x < 0.25) was prepared via solid-state sintering combined with high-energy ball milling. The structures, spectra, morphologies, and magnetic properties of Pr 3+ -substituted Ba hexaferrites were analyzed herein. Under high-energy ball milling, the material produces crystal vacancy defects for elemental doping. The X-ray diffraction results showed that the hexagonal crystal structure was affected when the Pr content ( x ) was > 0.20. The GSAS refinement results show that the synthesized samples were good. The scanning electron microscopy results and Fourier transform infrared (FT-IR) spectra of the tetrahedral and octahedral sites (FT-IR result of the Fe–O bond = 601 and 448 cm −1 peaks, respectively) of the prepared material proved the formation of a hexagonal crystal structure. The magnetic properties of the samples were measured using a vibrating sample magnetometer at room temperature, and the obtained results demonstrated that the coercivity increased with an increase in the doping amount (from 3815.03 at x = 0 to 4600.56 kOe at x = 0.25). At the same time, the saturation magnetization maintained its high value (> 72.568 emu/g), which is beneficial for preparing permanent magnets.
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ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2022
·Vol. 29
·期 47
·71766-71773
·
IF 5.19
Huo Junyu,Li Chaoyu,Hu Xiaojin,Xie Huijun,Hu Zhen,Wu Haiming,Liang Shuang,Zhang Jian
Iron ore and manganese ore were used as substrate of constructed wetlands (CWs) to enhance nitrogen (N) removal. However, the N purification performance in CWs filled with iron or manganese ore under antibiotics stress needs further study. In this study, three groups of CWs filled with river sand, limonite (a kind of iron ore), and manganese ore sand were constructed, which were named as C-CWs, Fe-CWs, and Mn-CWs, respectively. The effect and mechanism of the composite antibiotics sulfamethoxazole (SMX) and trimethoprim (TMP) on N removal in CWs were investigated. While the addition of SMX and TMP inhibited about 40% nitrification and promoted about 25% denitrification in all CWs, Fe-CWs and Mn-CWs always had better N removal performance than C-CWs. Changes in microbial community structure in CWs indicated that the better N removal performance in Fe-CWs and Mn-CWs was attributed to the presence of more abundant and diverse N-associated bacteria, especially Fe- and Mn-driven autotrophic denitrifying bacteria. What’s more, the addition of iron ore or manganese ore contributed to the better N removal performance with highest relative abundance of N-transferring bacteria under antibiotics stress.
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高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
·
2022
·Vol. 20
·期 1
·1-18
·
IF 9.429
Chen Youlu,Chen Zuoguan,Duan Jianwei,Gui Liang,Li Huiyang,Liang Xiaoyu,Tian Xinxin,Liu Kaijing,Li Yongjun,Yang Jing
Peripheral vascular disease (PVD) is a common clinical manifestation of atherosclerosis. Vascular endothelial growth factor (VEGF) gene therapy is a promising approach for PVD treatment. However, due to single-gene therapy limitations and high H2O2 pathological microenvironment, VEGF gene therapy are not as expectations and its clinical application are limited. Synergistic effects of Nerve factors and vascular factors in angiogenesis have attracted attention in recent years. In this study, VEGF and nerve growth factor (NGF) genes co-delivery nanoparticles (VEGF/NGF-NPs) were prepared by using H2O2 responsive 6s-PLGA-Po-PEG as a carrier. 6s-PLGA-Po-PEG could react with H2O2 specifically due to the internal peroxalate bond. Angiogenic effects of VEGF/NGF-NPs has been evaluated in cells and hindlimb ischemia mice model. Results showed that VEGF/NGF-NPs promoted VEGF and NGF co-expression simultaneously, eliminated excessive H2O2, strengthened reactions between SH-SY5Ys and HUVECs, and finally enhanced migration, tube formation, proliferation and H2O2 damage resistance of HUVECs. VEGF/NGF-NPs also recovered blood perfusion, promoted the expression of VEGF, NGF, eNOS and NO, and enhanced vascular coverage of pericytes. Treatment effects of VEGF/NGF-NPs may related to VEGF/eNOS/NO pathway. Altogether, VEGF/NGF-NPs eliminated excessive H2O2 while achieving gene co-delivery, and promoted stable angiogenesis. It’s a promising way for PVD treatment by using VEGF/NGF-NPs.Graphical Abstract
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高影响因子
JOURNAL OF POROUS MATERIALS
·
2022
·Vol. 29
·期 5
·1411-1421
·
IF 2.523
Wang Yiying,Pang Yuehong,Yang Yan,Shen Xiaofang
Bisphenol A (BPA), as a common endocrine disruptor, is widely present in water environment. It can migrate into food and gradually accumulate in organisms, posing potential health threats to humans. Herein, covalent organic frameworks (COFs) with different pore sizes (15.56 Å for TpPa-2, 21.95 Å for TpBD, and 30.29 Å for TFPB-BD) were synthesized by solvothermal reaction. The corresponding magnetic COFs (MCOFs) were conveniently prepared by co-precipitation method and were used for adsorption of BPA. The adsorption capacity of Fe 3 O 4 /TpPa-2, Fe 3 O 4 /TpBD, Fe 3 O 4 /TFPB-BD reached 44.85, 24.14 and 2.61 mg g −1 respectively, that is Fe 3 O 4 /TpPa-2>Fe 3 O 4 /TpBD>Fe 3 O 4 /TFPB-BD. The adsorption kinetic fitted the pseudo-second-order kinetic model and the adsorption isotherm fitted the Freundlich isothermal model. Both models demonstrated that the adsorption of BPA is based on heterogeneous surface. In addition, recycling experiments indicated that after five cycles of adsorption/desorption, the adsorption capacity can still reach 76.39% of the first use, indicating that recyclable Fe 3 O 4 /TpPa-2 is a potential adsorbent and can be further applied to the adsorption of environmental pollutants.
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高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
·
2022
·Vol. 20
·期 1
·1-22
·
IF 9.429
Li Hanrui,Cai Xiaoxia,Yi Tong,Zeng Yun,Ma Jingwen,Li Lei,Pang Liaojun,Li Na,Hu Hao,Zhan Yonghua
Background Postoperative chemotherapy for gastric cancer often causes multidrug resistance (MDR), which has serious consequences for therapeutic effects. Individualized treatment based on accurate monitoring of MDR will greatly improve patient survival.Results In this article, a self-enhanced Mn3O4 nanoplatform (MPG NPs) was established, which can react with glutathione to produce Mn2+ to enhance T1-weighted magnetic resonance imaging (MRI) and mediate in vivo real-time MDR monitoring. In vitro MRI results showed that MRI signals could be enhanced in the presence of hydrogen peroxide and glutathione and at acidic pH. In vivo MRI results indicated that MPG NPs could specifically target MDR cells, thereby realizing real-time monitoring of MDR in gastric cancer. Furthermore, MPG NPs have good chemodynamic activity, which can convert the endogenous hydrogen peroxide of tumor cells into highly toxic hydroxyl radical through Fenton-like reaction at acidic pH to play the role of chemodynamic therapy. In addition, Mn3O4 can significantly enhance the chemodynamic therapy effect because of its good photothermal conversion effect. Furthermore, in situ photothermal/chemodynamic synergistic therapy obtained remarkable results, the tumors of the mice in the synergistic therapy group gradually became smaller or even disappeared.Conclusion sMPG NPs have good biocompatibility, providing a good nanoplatform for real-time monitoring and precise diagnosis and treatment of MDR in gastric cancer.Graphical Abstract
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高影响因子
Food Analytical Methods
·
2022
·Vol. 15
·期 8
·2202-2212
·
IF 3.498
Feng Junli,Wu Yuanyuan,Shen Qing
In the present study, a sensitive and simple approach for colorimetric detecting microcystin-LR (MC-LR) in fish tissue was developed based on gold nanoparticles (AuNPs) and a truncated aptamer Apt-910–2, which was obtained by mutation and rational truncation from the previously selected 60-mer one. The 23-mer Apt-910–2 presented improved binding affinity to MC-LR and higher specificity. Under the optimum experimental conditions, the Apt-910–2 colorimetric aptasensor worked well in 10 to 150 ng/mL MC-LR concentration ranges, and the limit of detection (LOD) was 0.38 ng/mL. This Apt-910–2 colorimetric aptasensor was also applied to spiked fish tissue samples and gave recovery rates ranged from 75.18 to 87.72%, with the visual LOD 10 μg/kg in fish tissue judged by the naked eye. Thus, this study provides a rapid, reliable, and convenient approach for visual detection of MC-LR, which is of great significance for food safety control by assessing potential health risks related to seafood consumption.
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高影响因子
MICROCHIMICA ACTA
·
2022
·Vol. 189
·期 5
·1-10
·
IF 6.408
Wei Jinxiu,Zhu Kai,Chen Zengwei,Yang Zhaoyan,Yang Kuo,Wang Zhuyuan,Zong Shenfei,Cui Yiping
Programed cell death ligand 1 (PD-L1) is a protein biomarker overexpressed on exosomes derived from tumor cells. It plays an important role in tumor diagnosis, screening, evaluation of therapeutic efficacy, and prognosis. In this study, a facile method is presented to detect PD-L1-overexpressing cancer exosomes with high specificity and sensitivity. First, gold nanospheres (GNSs) were attached to the bottom of an eight-well chambered slide by electrostatic adsorption, forming the detection substrate. Then, Cy5-labeled CD63 aptamers (i.e., the capture probes) were modified on the GNSs by Au–S bond. After adding samples containing target exosomes which were stained by membrane dyes DiI in advance, FAM-labeled PD-L1 aptamers (i.e., the immunoprobes) were added to recognize PD-L1 on the target exosomes. By triple-color fluorescence co-localization (TFC) of the Cy5, DiI, and FAM channels, highly sensitive and reliable detection of the PD-L1-overexpressing exosomes was achieved in the concentration range 7.78 × 10 1 to 7.78 × 10 4 particles/mL with a detection limit down to 6 particles/mL. The advantages of the proposed detection method include the following; first, the detection substrate is easy to prepare and convenient to clean. Second, the TFC strategy can completely exclude nonspecific reaction sites and thus significantly improves the accuracy. Such a facile and reliable detection method holds a great potential in exosome-based cancer theranostics. Graphical abstract In this paper, we proposed a triple-color fluorescence co-localization (TFC) strategy to significantly improve the reliability of exosome detection and the detection substrate is easy to prepare and convenient to clean. In addition, the LOD is down to 6 particles/mL, which is quite low compared with other detection methods
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高影响因子
JOURNAL OF POLYMER RESEARCH
·
2022
·Vol. 29
·期 5
·1-11
·
IF 3.061
Wang Yulin,Li Yangyang,Luo Yiling,Zhou Kailian,Qiu Xiuzhen,Guo Huishi
A novel molecularly imprinted polymer composite material (OTA-MIPs) was prepared by the complexation between a metal–organic framework single-crystal ordered macropore ZIF-8 and a novel dummy template for the selective recognition of ochratoxin A (OTA). First, the structural analog of OTA was synthesized as a dummy template molecule. Then, OTA-MIPs were synthesized on the ZIF-8 surface by thermal polymerization. The as-synthesized OTA-MIPs were characterized by infrared spectroscopy, thermogravimetric analysis, scanning electron microscopy, and N 2 adsorption. The material exhibited a good network structure as well as a high specific surface area and pore size to facilitate the adsorption of target molecules. OTA-MIPs were examined for OTA re-binding properties. The Langmuir model fitted the adsorption data for OTA-MIPs better than the Freundlich model. At the same time, compared to the corresponding non-imprinted (OTA-NIPs) material, OTA-MIPs exhibited a 6.8-fold higher affinity for OTA. The molecular recognition ability of OTA-MIPs was highly specific for OTA compared to structurally similar compounds such as patulin and zearalenone. OTA-MIPs only exhibited a slight downward trend in terms of performance after five times of reuse. These results highlighted their potential for the concentration of OTA from complex food matrices.
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