Biomed Research International
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2022
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IF 3.246
Chuanying Li,Rong Cheng,Lin Li,Miaomiao Chen,Cheng Wu
Duodenal ulcer seriously affects the quality of life and life safety of children, but the pathogenesis of children with duodenal ulcer is still unclear. As an important second messenger in the body, Ca2+ participates in the physiological and pathological processes of various diseases. Therefore, transient receptor potential vanilloid type 4 (TRPV4) as one of the channels that mediate Ca2+ has attracted widespread attention in recent years. Here, we found that TRPV4 is highly expressed in children with duodenal ulcer and has good diagnostic value through specimens of children with duodenal ulcer, and animal experiments have proved that TRPV4 is also highly expressed in duodenal ulcer mice. In addition, TRPV4 can enhance intestinal permeability, thereby promoting further infiltration of inflammatory factors. In summary, these results indicate that TRPV4 is involved in the occurrence and development of duodenal ulcer. Therefore, this study provides the diagnostic and therapeutic value of TRPV4 in children with duodenal ulcer.
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EXPERIMENTAL EYE RESEARCH
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2021
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IF 3.467
Qiongtao Song,Fuwen Zhang,Xue Han,Yanrong Yang,Ying Zhao,Junguo Duan
Excessive iron can be accumulated in the retina and lead to retinal iron overload . Salvianic acid A (SAA) has a variety of pharmacologic effects, but there is only a limited understanding of its benefits for retinal iron overload. The aim of this study was to examine the protective effects and latent mechanisms of SAA on retinal iron overload. SAA reduced iron in the serum and retina, attenuated pathophysiological changes, and reduced retinal iron deposition in the retinas of iron-overloaded mice. It also reduced intracellular iron in ARPE-19 cells by regulating iron-handling proteins and chelating with iron. It also significantly inhibited cellular oxidative and inflammatory damage by increasing the nuclear translocation of nuclear erythroid 2-related factor 2 (Nrf2) while decreasing nuclear factor-kappa B (NF-κB), protecting the ARPE-19 cells from apoptosis by suppressing the Bax/Bcl-2 ratio, cytochrome c release, caspase activation, and poly ADP-ribose polymerase cleavage. The ability of SAA to inhibit apoptosis, increase nuclear Nrf2 expression, and decrease nuclear NF-κB expression was further confirmed in the retinas of iron-overloaded mice. This study demonstrates that SAA shows significant protective effects against retinal iron overload; its mechanisms might be associated with iron chelation ; regulation of iron-handling proteins; and inhibition of oxidative stress , inflammation and apoptosis.
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JOURNAL OF NANOBIOTECHNOLOGY
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2022
·Vol. 20
·期 1
·1-19
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IF 9.429
Peng Xin,Xie Zhuomi,Wang Xiuhua,Zhao Yuxiang,Yang Chuyun,Zhang Zhongyi,Li Mingjie,Zheng Jianping,Wang Yuhui
Background Luminescent nanomaterials (LNMs), especially newly-exploited fluorescent carbon-dots (CDs), have demonstrated promising candidates for sunlight harvesting and enhanced photosynthesis efficiency of crops. However, most of the studies focus on the design and synthesis of LNMs and primary metabolism in biomass acceleration, secondary metabolism that closely associated with the quality ingredients of plants is rarely mentioned. Results UV-absorptive and water-soluble NIR-CDs were harvested via a facile microwave-assisted carbonization method. The effect and regulatory mechanism of NIR-CDs on the secondary metabolism and bioactive ingredients accumulation in Tetrastigma hemsleyanum were explored. A total of 191 differential secondary metabolites and 6874 differentially expressed genes were identified when the NIR-CDs were adopted for enhancing growth of T. hemsleyanum . The phenolic acids were generally improved, but the flavonoids were more likely to decrease. The pivotal differentially expressed genes were involved in biosynthesis of secondary metabolites, flavonoid biosynthesis, porphyrin and chlorophyll metabolism, etc. The gene-metabolite association was constructed and 44 hub genes highly related to quality ingredients accumulation and growth were identified, among which and the top 5 genes of the PPI network might be the key regulators. Conclusion This research provided key regulatory genes and differentially accumulating quality ingredients under NIR-CDs-treatment, which could provide a theoretical basis for expanding the applications of nanomaterial in industrial crop agriculture. Graphical Abstract
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Acta Pharmaceutica Sinica B
·
2018
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IF 6.014
Xia Lv,Shuguang Zhang,Huipeng Ma,Peipei Dong,Xiaodong Ma,Ming Xu,Yan Tian,Zeyao Tang,Jinyong Peng,Haibo Chen,Jianbin Zhang
Microemulsions are promising drug delivery systems for the oral administration of poorly water-soluble drugs. However, the evolution of microemulsions in the gastrointestinal tract is still poorly characterized, especially the structural change of microemulsions under the effect of lipase and mucus. To better understand the fate of microemulsions in the gastrointestinal tract, we applied small-angle X-ray scattering (SAXS) and fluorescence resonance energy transfer (FRET) to monitor the structural change of microemulsions under the effect of lipolysis and mucus. First, the effect of lipolysis on microemulsions was studied by SAXS, which found the generation of liquid crystalline phases. Meanwhile, FRET spectra indicated micelles with smaller particle sizes were generated during lipolysis, which could be affected by CaCl 2 , bile salts and lecithin. Then, the effect of mucus on the structural change of lipolysed microemulsions was studied. The results of SAXS and FRET indicated that the liquid crystalline phases disappeared, and more micelles were generated. In summary, we studied the structural change of microemulsions in simulated gastrointestinal conditions by SAXS and FRET, and successfully monitored the appearance and disappearance of the liquid crystalline phases and micelles.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2020
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IF 5.162
Hong Yao,Lei Wang,Xin Tang,Zhuo Yang,Huanyong Li,Chongzhen Sun,Xiyang Wu,Dan Xu
In this research, two novel polysaccharides (S1 and S2) from Solanum nigrum L were extracted and purified. Then homogeneity, molecular weights, major chemical contents and monosaccharide compositions of S1 and S2 were determined. Then, the effects of S1 and S2 on human faecal microbial community and short-chain fatty acid production were investigated using an in vitro fermentation model. Results showed that S1 and S2 have different impacts on human gut microbiota in vitro . S1 selectively promoted the abundance of 9 genera and the production of propionic acid, butyric acid, isobutyric acid, valeric acid and isovaleric acid; while S2 selectively promoted the abundance of 8 genera and the production of acetic acid, propionic acid, butyric acid, isobutyric acid, valeric acid, isovaleric acid and succinic acid. Also, S1 group had higher abundance of genera Butyricimonas and Megamonas and higher levels of lactic acid than S2; while S2 group had higher abundance of Megaphaera and higher levels of butyric acid, valeric acid, isobutyric acid, isovaleric acid and succinic acid comparably. We concluded that S1 and S2 may have potential prebiotic functions.
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Bioactive Materials
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2020
·
IF 8.724
Mingxue Chen,YangYang Li,Shuyun Liu,Zhaoxuan Feng,Hao Wang,Dejin Yang,Weimin Guo,Zhiguo Yuan,Shuang Gao,Yu Zhang,Kangkang Zha,Bo Huang,Fu Wei,Xinyu Sang,Qinyu Tian,Xuan Yang,Xiang sui,Yixin Zhou,Yufeng Zheng,Quanyi Guo
Tissue engineering provides a promising avenue for treating cartilage defects. However, great challenges remain in the development of structurally and functionally optimized scaffolds for cartilage repair and regeneration. In this study, decellularized cartilage extracellular matrix (ECM) and waterborne polyurethane (WPU) were employed to construct WPU and WPU-ECM scaffolds by water-based 3D printing using low-temperature deposition manufacturing (LDM) system, which combines rapid deposition manufacturing with phase separation techniques. The scaffolds successfully achieved hierarchical macro‐microporous structures. After adding ECM, WPU scaffolds were markedly optimized in terms of porosity, hydrophilia and bioactive components. Moreover, the optimized WPU-ECM scaffolds were found to be more suitable for cell distribution, adhesion, and proliferation than the WPU scaffolds. Most importantly, the WPU-ECM scaffold could facilitate the production of glycosaminoglycan (GAG) and collagen and the upregulation of cartilage-specific genes. These results indicated that the WPU-ECM scaffold with hierarchical macro‐microporous structures could recreate a favorable microenvironment for cell adhesion, proliferation, differentiation, and ECM production. In vivo studies further revealed that the hierarchical macro‐microporous WPU-ECM scaffold combined with the microfracture procedure successfully regenerated hyaline cartilage in a rabbit model. Six months after implantation, the repaired cartilage showed a similar histological structure and mechanical performance to that of normal cartilage. In conclusion, the hierarchical macro‐microporous WPU-ECM scaffold may be a promising candidate for cartilage tissue engineering applications in the future.
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LUMINESCENCE
·
2025
·Vol. 40
·期 12
·e70373
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IF 3
Huajie Kong,Dandan Li,Yun Yang,Xiangrui Hu,Mingzhe Li,Qiqi Zuo,Kuoxi Xu
A novel salicylaldehyde-benzohydrazide–based fluorescent probe L was designed and synthesized. The probe displayed excellent specificity and sensitivity for Zn 2+ detection in aqueous media (HEPES buffer, pH = 7.40), accompanied by a remarkable colorimetric fluorescence change from colorless to green under a 365 nm UV lamp. The detection mechanism of probe L for Zn 2+ was elucidated by 1 H NMR, HRMS, and DFT calculation. Moreover, the probe was effectively applied in the detection of Zn 2+ in both environmental samples and biological imaging in living cells.
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JOURNAL OF APPLIED POLYMER SCIENCE
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2025
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IF 2.8
Yong-Jie Zhang,Yiling Lian,Huan Gao,Ji Huang,Jing Li,Feng Jin
Perovskite-quantum dot (PQD) photoresists exhibit excellent optoelectronic properties and have become key modules for the construction of next-generation optoelectronic devices, including micro-LEDs, lasers, and optical anti-counterfeiting. However, traditional preparation of PQD photoresist requires a lot of solvent, harsh conditions, and a time-consuming process, which hinders the development of PQDs. Herein, we demonstrate in situ synthesis of CsPbX 3 (X = Br, Cl) PQDs photoresist based on polymerizable monomer tricyclic decane dimethanol diacrylate (TCDDA) for 3D printing. TCDDA not only acts as an eco-friendly solvent and efficient ligand to synthesize and stabilize the PQDs, but also serves as a functional monomer for photopolymerization to encapsulate the PQDs. The PQD photoresist is suitable for photolithography on different substrates, including metals, inorganic materials, polymers, and even paper. Furthermore, we performed 3D printing of arbitrary 3D objects with the smallest feature size of 17 μm by using the PQD photoresist. As a proof-of-concept, we depict the potential application of the PQDs photoresist for optical encryption through the construction of quick response (QR) codes and binary codes. This study provides a versatile method for the synthesis of PQD photoresist, and will pave the way for potential applications in flexible optoelectronic devices and anti-counterfeiting.
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International Journal of Clinical and Experimental Pathology
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2021
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IF 0
Fengtao Yi,Lei Liu,Menglan Ding,Yaling Zhu,Qingling Song,Ceng Zeng
Objective: Cryoablation can directly kill tumor cells through sudden changes in temperature. It can also enhance lymphocyte function and cause distant tumor regression far from the ablation treatment area. In order to further explore the changes of immune function after cryoablation, the changes of Kupffer cells (KCs), the main immune cells in the liver, and their effects on untreated tumors in vivo were studied. Methods: Rabbit VX2 liver cancer models were constructed. The growth of liver tumors was confirmed by ultrasound after transplantation for 3 weeks. Fifteen Japanese white rabbits were divided into a tumor control group and cryoablation group. Cryoablation group was treated with cryoablation of a single or partial tumor. Histologic and immunohistochemical changes of the treatment area and untreated tumor area before and after cryoablation were observed, and the phagocytic function changes of KCs around the untreated area and treatment area were observed by electron microscopy. Results: Cryoablation areas showed necrosis, infiltration of inflammatory cells (including KCs), and fibrosis of tissue. The number of inflammatory cells in the unfrozen tumor area was increased in the same treated rabbit. There was a significant difference in the maximum diameter of unfrozen tumors between the frozen group and control group at 15th days after cryoablation (P<0.05), while the difference was not obvious at the 3rd and 7th day (P>0.05). Electron microscopy showed that the number of debris fragments engulfed by KCs around the tumor after cryoablation was significantly higher than that of the control group. In the same rabbit, we compared the amount of debris between tissue surrounding the unfrozen area and around the cryoablation area. There was a significant difference on the 3rd day after cryoablation, P=0.043, while there was no significant difference on the 7th day, P=0.348. Conclusion: After cryoablation, inflammatory cells aggregated around the cryoablated area. The activity of KCs had been increased and the function of phagocytosis enhanced. KCs had a certain inhibitory effect on the untreated tumor in the same animal at the early stage (within 15 days), but it was not enough to restrain the growth of the untreated tumors.
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Royal Society Open Science
·
2018
·Vol. 5
·期 5
·
IF 2.504
Dan-qing Liu,Zhi-qiang Cheng,Qing-jie Feng,He-jie Li,Shu-feng Ye,Bo Teng
In this work, 20(S)-protopanaxadiol (PPD)-loaded polycaprolactone (PCL) nanofibres were successfully fabricated by the electrospinning technique using Tween 80 as a solubilizer. Firstly, smooth and continuous nanofibres were collected using suitable solvents and appropriate spinning conditions. Secondly, nanofibre mats were characterized by scanning electron microscopy, thermogravimetric (TG) analysis, Fourier transform infrared spectroscopy and mechanical testing. Finally, nanofibrous membranes were evaluated using water contact angle, in vitro drug release, biodegradation test, in vitro and in vivo anti-tumour activity and cell apoptosis assay. Scanning electron microscopic observations indicated that the diameter of the drug-loaded nanofibres increased with the increase of drug concentration. TG analysis and mechanical test showed that nanofibres were equipped with great thermal and mechanical properties. Biodegradation test exhibited that the structure of fabricated nanofibres had a certain degree of change after 15 days. An in vitro release study showed that PPD from drug-loaded nanofibres could be released in a sustained and prolonged mode. The cytotoxic effect of drug-loaded nanofibre mats examined on human laryngeal carcinoma cells (Hep-2 cells) demonstrated that the prepared nanofibres had a remarkable anti-tumour effect. Meanwhile, the drug-loaded fibre mats showed a super anti-tumour effect in an in vivo anti-tumour study. All in all, PCL nanofibres could be a potential carrier of PPD for cancer treatment.
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Asian Journal of Pharmaceutical Sciences
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2018
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IF 4.56
Zhenbao Li,Dan Li,Wenjuan Zhang,Peng Zhang,Qiming Kan,Jin Sun
Preformed albumin corona of albumin-nonselective nanoparticles (NPs) is widely exploited to inhibit the unavoidable protein adsorption upon intravenous administration. However, very few studies have concerned the preformed albumin corona of albumin-selective NPs. Herein, we report a novel type of albumin-selective NPs by decorating 6-maleimidocaproyl polyethylene glycol stearate (SA) onto PLGA NPs (SP NPs) surface, taking albumin-nonselective PLGA NPs as control. PLGA NPs and SP NPs were prepared by emulsion-solvent evaporation method and the resultant NPs were in spherical shape with an average diameter around 180 nm. The corresponding albumin-coating PLGA NPs ( [email protected] NPs) and albumin-coating SP NPs ( [email protected] NPs) were formulated by incubating SP NPs or PLGA NPs with bovine serum albumin solution, respectively. The impact of albumin corona on particle characteristics, stability, photothermal effect, cytotoxicity, cell uptake, spheroid penetration and pharmacokinetics was investigated. In line with previous findings of preformed albumin coating, [email protected] NPs exhibited higher stability, cytotoxicity, cell internalization and spheroid penetration performances in vitro , and longer blood circulation time in vivo than those of albumin-nonselective PLGA NPs, but albumin-selective SP NPs is capable of achieving a comparable in vitro and in vivo performances with both [email protected] NPs and [email protected] NPs. Our results demonstrate that SA decorated albumin-selective NPs pave a versatile avenue for optimizing nanoparticulate delivery without preformed albumin corona.
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Analytical Methods
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2025
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IF 2.6
Chenxi Yin,xiaoyang Cai,Jia Dong,Chang Liu,Hongtao Fan
Iodinated X-ray contrast media (ICM) have emerged persistent contaminants due to their high polarity, persistence and biological inertness. In this work, a sampling method for monitoring the time-integrated concentrations of the six ICMs including iohexol, iopamidol, iomeprol, iopromide, iodixanol and ioversol in sewage effluents have been developed, using diffusive gradients in thin films (DGT) technique based on graphene nanosheets gel as the binding layer and commercial polyethersulfone membrane as the diffusion layer (G-DGT). The uptakes of the G-DGT for the six ICMs were evaluated in the synthetic solution, and found to be independent of pH range of 4–9, ionic strength range from 1×10⁻4 to 0.1 mol L⁻¹, and dissolved fulvic acid and tannic acid ranging from 0 to 20 mg L⁻¹. In the three spiked freshwater samples, the good precision and good agreement between CDGT and CSOLN confirm that the G-DGT is capable of accurate measurements of the six ICMs in freshwater. The time-integrated concentrations of ioversol and iopamidol can be detected with better reproducibility with respective to grab sampling due to the use in clinical practice. These illustrate that the G-DGT is an effective sampling tool for obtaining the time-integrated concentrations of ICMs in complex sewage effluent.
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