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Yin Q, Gu J, Ren P, Guan Z, Wang Y, Bai R, Liu Y. Microbiome dysbiosis by antibiotics protects cartilage degradation in OAOP mice. J Endocrinol 2024; 261:e230330. [PMID: 38265817 DOI: 10.1530/joe-23-0330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 01/24/2024] [Indexed: 01/25/2024]
Abstract
The role of this study was to evaluate the impact of gut microbiota depletion on the progression of osteoarthritis (OA) and osteoporosis (OP). We conducted an experimental mouse model of OA and OP over an 8-week period. The model involved destabilization of the medial meniscus and bilateral ovariectomy (OVX). To deplete the gut microbiota, we administered a course of antibiotics for 8 weeks. The severity of OA was assessed through micro-CT scanning, X-rays, and immunohistochemical staining. Microbiome analysis was performed using PCR of 16S DNA on fecal samples, and the levels of serum lipopolysaccharide, interleukin 6, tumor necrosis factor-α (TNF-α), osteocalcin, and estrogen were measured using enzyme-linked immunosorbent assay. We found that in comparison to the OVX+OA group, the OVX+OA+ABT group exhibited increased bone mineral density (P < 0.0001), bone volume fraction (P = 0.0051), and trabecular number (P = 0.0023) in the metaphyseal bone. Additionally, cartilage injury and levels of matrix metalloproteinase 13 were reduced in the OVX+OA+ABT group compared to the OVX+OA group. Moreover, the OVX+OA+ABT group demonstrated decreased relative abundance of Bacteroidetes, serum lipopolysaccharide (P = 0.0005), TNF-α (P < 0.0001), CTX-1 (P = 0.0002), and increased expression of bone formation markers. These findings were further supported by correlation network analyses. Depletion of gut microbiota was shown to protect against bone loss and cartilage degradation by modulating the composition of the gut microbiota in osteoporosis and osteoarthritis.
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Affiliation(s)
- Qin Yin
- Department of Orthopedics, Wuxi Ninth People's Hospital Affiliated to Soochow University, Wuxi, Jiangsu, China
| | - Jun Gu
- Department of Orthopedics, Wuxi Ninth People's Hospital Affiliated to Soochow University, Wuxi, Jiangsu, China
| | - Pengju Ren
- Department of Orthopedics, The Shanghai Tenth People's Hospital of Tongji University, Shanghai, China
| | - Zhiqiang Guan
- Department of Dermatology, Xuzhou Municipal Hospital Affiliated to Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Yongxiang Wang
- Department of Orthopedics, Clinical Medical College, Yangzhou University, Yangzhou, China
- Department of Orthopedics, Northern Jiangsu People's Hospital, Yangzhou, China
| | - Ruijun Bai
- Department of Orthopedics, Wuxi Ninth People's Hospital Affiliated to Soochow University, Wuxi, Jiangsu, China
| | - Yu Liu
- Department of Orthopedics, Wuxi Ninth People's Hospital Affiliated to Soochow University, Wuxi, Jiangsu, China
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Zhan X, Nie Z, Li N, Zhou A, Lv H, Liang M, Wu K, Cheng G, Yin Q. Catalytic Asymmetric Cascade Dearomatization of Indoles via a Photoinduced Pd-Catalyzed 1,2-Bisfunctionalization of Butadienes. Angew Chem Int Ed Engl 2024:e202404388. [PMID: 38641988 DOI: 10.1002/anie.202404388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 04/17/2024] [Accepted: 04/19/2024] [Indexed: 04/21/2024]
Abstract
Photoinduced Pd-catalyzed bisfunctionalization of butadienes with a readily available organic halide and a nucleophile represents an emerging and attractive method to assemble versatile alkenes bearing various functional groups at the allylic position. However, enantiocontrol and/or diastereocontrol in the C-C or C-X bond-formation step have not been solved due to the open-shell process. Herein, we present a cascade asymmetric dearomatization reaction of indoles via photoexcited Pd-catalyzed 1,2-biscarbonfunctionalization of 1,3-butadienes, wherein asymmetric control on both the nucleophile and electrophile part is achieved for the first time in photoinduced bisfunctionalization of butadienes. This method delivers structurally novel chiral spiroindolenines bearing two contiguous stereogenic centers with high diastereomeric ratios (up to >20:1 dr) and good to excellent enantiomeric ratios (up to 97:3 er). Experimental and computational studies of the mechanism have confirmed a radical pathway involving excited-state palladium catalysis. The alignment and non-covalent interactions between the substrate and the catalyst were found to be essential for stereocontrol.
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Affiliation(s)
- Xiaohang Zhan
- Shenzhen Institutes of Advanced Technology, Faculty of Pharmaceutical Sciences, CHINA
| | - Zhiwen Nie
- Shenzhen Institutes of Advanced Technology, Faculty of Pharmaceutical Sciences, CHINA
| | - Na Li
- The Chinese University of Hong Kong, School of Medicine, CHINA
| | - Ao Zhou
- Shenzhen Institutes of Advanced Technology, Faculty of Pharmaceutical Sciences, CHINA
| | - Haotian Lv
- Nanchang University, School of Chemistry and Chemical Engineering, CHINA
| | - Mingrong Liang
- Shenzhen Institutes of Advanced Technology, Faculty of Pharmaceutical Sciences, No 1068,xueyuan Rd., Xili, Nanshan District,Shenzhen,Guangdong,China, 518055, Shenzhen, CHINA
| | - Keqin Wu
- Nanchang University, School of Chemistry and Chemical Engineering, CHINA
| | - Guijuan Cheng
- The Chinese University of Hong Kong, School of Medicine, CHINA
| | - Qin Yin
- Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences, Pharmacy, No 1068,xueyuan Rd., Xili, Nanshan District,Shenzhen,Guangdong,China, 518055, Shenzhen, CHINA
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Wang J, Luo MP, Gu YJ, Liu YY, Yin Q, Wang SG. Chiral Cp x Rhodium(III)-Catalyzed Enantioselective Aziridination of Unactivated Terminal Alkenes. Angew Chem Int Ed Engl 2024; 63:e202400502. [PMID: 38279683 DOI: 10.1002/anie.202400502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 01/26/2024] [Accepted: 01/26/2024] [Indexed: 01/28/2024]
Abstract
Chiral cyclopentadienyl-rhodium(III) Cpx Rh(III) catalysis has been demonstrated to be competent for catalyzing highly enantioselective aziridination of challenging unactivated terminal alkenes and nitrene sources. The chiral Cpx Rh(III) catalysis system exhibited outstanding catalytic performance and wide functional group tolerance, yielding synthetically important and highly valuable chiral aziridines with good to excellent yields and enantioselectivities (up to 99 % yield, 93 % ee). This protocol presents a novel and effective strategy for synthesizing enantioenriched aziridines from simple alkenes. Various transformations were performed on the aziridine products, illustrating the versatility and synthetic potential of this protocol for constructing highly functionalized compounds.
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Affiliation(s)
- Juanjuan Wang
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, Guangdong, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Mu-Peng Luo
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, Guangdong, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yi-Jie Gu
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, Guangdong, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yu-Ying Liu
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, Guangdong, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Qin Yin
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, Guangdong, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Shou-Guo Wang
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, Guangdong, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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Rong N, Zhou A, Liang M, Wang SG, Yin Q. Asymmetric Hydrogenation of Racemic 2-Substituted Indoles via Dynamic Kinetic Resolution: An Easy Access to Chiral Indolines Bearing Vicinal Stereogenic Centers. J Am Chem Soc 2024; 146:5081-5087. [PMID: 38358355 DOI: 10.1021/jacs.4c00298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2024]
Abstract
The asymmetric hydrogenation (AH) of N-unprotected indoles is a straightforward, yet challenging method to access biologically interesting NH chiral indolines. This method has for years been limited to 2/3-monosubstituted or 2,3-disubstituted indoles, which produce chiral indolines bearing endocyclic chiral centers. Herein, we have reported an innovative Pd-catalyzed AH of racemic α-alkyl or aryl-substituted indole-2-acetates using an acid-assisted dynamic kinetic resolution (DKR) process, affording a range of structurally fascinating chiral indolines that contain exocyclic stereocenters with excellent yields, diastereoselectivities, and enantioselectivities. Mechanistic studies support that the DKR process relies on a rapid interconversion of each enantiomer of racemic substrates, leveraged by an acid-promoted isomerization between the aromatic indole and nonaromatic exocyclic enamine intermediate. The reaction can be performed on a gram scale, and the products can be derivatized into non-natural β-amino acids via facile debenzylation and amino alcohol upon reduction.
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Affiliation(s)
- Nianxin Rong
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Ao Zhou
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
- Southern University of Science and Technology, Shenzhen, 518055, China
| | - Mingrong Liang
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Shou-Guo Wang
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Qin Yin
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
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Yin Q, Batbatan CG, Li Y, Zhang Y, Yang Q, Xiao A. Preparation and Characterization of Carrageenase Immobilized onto Polyethyleneimine-Modified Pomelo Peel. J Microbiol Biotechnol 2024; 34:132-140. [PMID: 37957113 PMCID: PMC10840462 DOI: 10.4014/jmb.2304.04029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 06/03/2023] [Accepted: 06/07/2023] [Indexed: 11/15/2023]
Abstract
In this study, carrageenase immobilization was evaluated with a concise and efficient strategy. Pomelo peel cellulose (PPC) modified by polyethyleneimine (PEI) using the physical absorption method was used as a carrier to immobilize carrageenase and achieved repeated batch catalysis. In addition, various immobilization and reaction parameters were scrutinized to enhance the immobilization efficiency. Under the optimized conditions, the enzyme activity recovery rate was more than 50% and 4.1 times higher than immobilization with non-modified pomelo peels. The optimum temperature and pH of carrageenase after immobilization by PEI-modified pomelo peel, at 60°C and 7.5 respectively, were in line with the free enzyme. The temperature resistance was reduced, inconsistent with free enzyme, and pH resistance was increased. A significant loss of activity (46.8%) was observed after reusing it thrice under optimal reaction conditions. In terms of stability, the immobilized enzyme conserved 76.0% of the initial enzyme activity after 98 days of storage. Furthermore, a modest decrease in the kinetic constant (Km) value was observed, indicating the improved substrate affinity of the immobilized enzyme. Therefore, modified pomelo peel is a verified and promising enzyme immobilization system for the synthesis of inorganic solvents.
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Affiliation(s)
- Qin Yin
- College of Biological and Food Engineering, Suzhou University, Suzhou, Anhui, 234000, P.R. China
- Department of Biology, Central Mindanao University, Maramag, Bukidnon, 8710, Philippines
| | | | - Yongxing Li
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen, Fujian, 361021, P.R. China
| | - Yonghui Zhang
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen, Fujian, 361021, P.R. China
| | - Qiuming Yang
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen, Fujian, 361021, P.R. China
| | - Anfeng Xiao
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen, Fujian, 361021, P.R. China
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Yu QJ, Li YL, Yin Q, Lu Y, Li LY, Xu DN, He M, Ma S, Yan W. Evaluation of inpatient services of tertiary comprehensive hospitals based on DRG payment. Front Public Health 2024; 12:1300765. [PMID: 38327576 PMCID: PMC10847224 DOI: 10.3389/fpubh.2024.1300765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Accepted: 01/10/2024] [Indexed: 02/09/2024] Open
Abstract
Objective This study aims to evaluate inpatient services in 49 tertiary comprehensive hospitals using indicators from the diagnosis related groups (DRG) payment system. Method DRG data from 49 tertiary comprehensive hospitals were obtained from the quality monitoring platform for provincial hospitals, and relevant indicators were identified. The analytic hierarchy process (AHP) was used to compute the weight of each indicator. The rank sum ratio method was used to calculate the weight rank sum ratio (WRSR) value and the corresponding probit value of each hospital. The hospitals were divided into four grades based on the threshold value: excellent, good, fair, and poor. Results Eight indicators of the 49 hospitals were scored, and the hospital rankings of indicators varied. The No. 1 hospital ranked first in the indicators of "total number of DRG", "number of groups", and "proportion of relative weights (RW) ≥ 2". The WRSR value of the No.1 hospital was the largest (0.574), and the WRSR value of the No. 44 hospital was the smallest (0.139). The linear regression equation was established: WRSRpredicted =-0.141+0.088*Probit, and the regression model was well-fitted (F = 2066.672, p < 0.001). The cut-off values of the three WRSRspredicted by the four levels were 0.167, 0.299, and 0.431, respectively. The 49 hospitals were divided into four groups: excellent (4), good (21), average (21), and poor (3). There were significant differences in the average WRSR values of four categories of hospitals (p < 0.05). Conclusion There were notable variances in the levels of inpatient services among 49 tertiary comprehensive hospitals, and hospitals of the same category also showed different service levels. The evaluation results contribute to the health administrative department and the hospital to optimize the allocation of resources, improve the DRG payment system, and enhance the quality and efficiency of inpatient services.
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Affiliation(s)
- Qun-jun Yu
- School of Humanities and Management, Kunming Medical University, Kunming, Yunnan, China
| | - Ya-lin Li
- School of Humanities and Management, Kunming Medical University, Kunming, Yunnan, China
| | - Qin Yin
- School of Humanities and Management, Kunming Medical University, Kunming, Yunnan, China
| | - Ye Lu
- School of Humanities and Management, Kunming Medical University, Kunming, Yunnan, China
| | - Lu-yan Li
- School of Humanities and Management, Kunming Medical University, Kunming, Yunnan, China
| | - Dan-ni Xu
- School of Humanities and Management, Kunming Medical University, Kunming, Yunnan, China
| | - Mei He
- School of Humanities and Management, Kunming Medical University, Kunming, Yunnan, China
| | - Sha Ma
- Department of Pharmacy, Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Wu Yan
- Clinical Research Center, Children’s Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
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Li R, Li L, Cai Z, Chen J, Zhang H, Zhao S, Tu J, Sun C, Jin Y, Zhang M, Zhang F, Zhang W, Yin Q, Xu H, Han H, Li T, Zhuge Y, Xiao J. Histological evaluation of pyrrolizidine alkaloid-induced hepatic sinusoidal obstruction syndrome: Correlation with Drum Tower Severity Scoring. Dig Liver Dis 2023:S1590-8658(23)01096-4. [PMID: 38151450 DOI: 10.1016/j.dld.2023.12.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 12/11/2023] [Accepted: 12/16/2023] [Indexed: 12/29/2023]
Abstract
BACKGROUND Hepatic sinusoidal obstruction syndrome induced by pyrrolizidine alkaloids (PA-HSOS) is a complication of drug-induced liver damage. Few studies have examined the relationship between pathological changes and clinical circumstances in PA-HSOS. The Drum Tower Severity Scoring System (DTSS) was developed using prognostic indicators from clinical treatment outcomes. We hypothesized that the severity of pathological damage is consistent with DTSS. AIMS We aimed to improve our understanding and assessment of vascular liver injury disease histopathology by studying larger sample sizes of human histopathological samples. We also wanted to confirm the link between histopathological findings and DTSS. METHODS The study included 62 patients with PA-HSOS who underwent transjugular liver biopsy. Their hepatic pathological tissues were evaluated. Analyses of linear regression and Spearman's correlation were employed to examine the relationship between DTSS and pathological characteristics. RESULTS Clinical performance and the DTSS score were used to determine histopathological severity. The sinusoidal congestion area (SCA), central venous endothelial injury (CVEI), and fibrinoid exudation in congestion foci (FECF) were significant indicators. SCA was linearly related to the DTSS score. CONCLUSION Our findings show that hepatic pathological characteristics correlate with DTSS scores in PA-HSOS. SCA, CVEI, and FECF may be helpful for determining PA-HSOS severity.
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Affiliation(s)
- Ruiqi Li
- Department of Gastroenterology, Drum Tower Hospital, Affiliated Medical College of Nanjing University, Nanjing, China; School of Medicine, Southeast University, Nanjing, China
| | - Lin Li
- Department of Pathology, Drum Tower Hospital, Affiliated Medical College of Nanjing University, Nanjing, China
| | - Zihao Cai
- Department of Gastroenterology, Drum Tower Hospital, Affiliated Medical College of Nanjing University, Nanjing, China
| | - Jun Chen
- Department of Pathology, Drum Tower Hospital, Affiliated Medical College of Nanjing University, Nanjing, China
| | - Han Zhang
- Department of Gastroenterology, Drum Tower Hospital, Affiliated Medical College of Nanjing University, Nanjing, China
| | - Si Zhao
- Department of Gastroenterology, Drum Tower Hospital, Affiliated Medical College of Nanjing University, Nanjing, China
| | - Jingjing Tu
- Department of Gastroenterology, Drum Tower Hospital, Affiliated Medical College of Nanjing University, Nanjing, China
| | - Chang Sun
- Department of Gastroenterology, Drum Tower Hospital, Affiliated Medical College of Nanjing University, Nanjing, China
| | - Yani Jin
- Department of Gastroenterology, Drum Tower Hospital, Affiliated Medical College of Nanjing University, Nanjing, China
| | - Ming Zhang
- Department of Gastroenterology, Drum Tower Hospital, Affiliated Medical College of Nanjing University, Nanjing, China
| | - Feng Zhang
- Department of Gastroenterology, Drum Tower Hospital, Affiliated Medical College of Nanjing University, Nanjing, China
| | - Wei Zhang
- Department of Gastroenterology, Drum Tower Hospital, Affiliated Medical College of Nanjing University, Nanjing, China
| | - Qin Yin
- Department of Gastroenterology, Drum Tower Hospital, Affiliated Medical College of Nanjing University, Nanjing, China
| | - Hui Xu
- Department of Gastroenterology, Drum Tower Hospital, Affiliated Medical College of Nanjing University, Nanjing, China
| | - Hao Han
- Department of Ultrasound, Drum Tower Hospital, Affiliated Medical College of Nanjing University, Nanjing, China
| | - Taishun Li
- Medical Statistical Analysis Center, Drum Tower Hospital, Affiliated Medical College of Nanjing University, Nanjing, China
| | - Yuzheng Zhuge
- Department of Gastroenterology, Drum Tower Hospital, Affiliated Medical College of Nanjing University, Nanjing, China; School of Medicine, Southeast University, Nanjing, China.
| | - Jiangqiang Xiao
- Department of Gastroenterology, Drum Tower Hospital, Affiliated Medical College of Nanjing University, Nanjing, China.
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Xu T, Jiao Y, Su Z, Yin Q, An L, Tan Y. Non-Covalent Functionalization of Graphene Oxide with POSS to Improve the Mechanical Properties of Epoxy Composites. Polymers (Basel) 2023; 15:4726. [PMID: 38139977 PMCID: PMC10748068 DOI: 10.3390/polym15244726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 12/08/2023] [Accepted: 12/13/2023] [Indexed: 12/24/2023] Open
Abstract
Phenyl polyhedral oligomeric silsesquioxane (POSS) is modified onto the GO surface by using the strong π-π coupling between a large number of benzene rings at the end of the phenyl POSS structure and the graphite structure in the GO sheet, realizing the non-covalent functionalization of GO (POSS-GO). The POSS-GO-reinforced EP (POSS-GO/EP) composite material is prepared using the casting molding process. The surface morphology of GO before and after modification and its peel dispersion in EP are examined. Furthermore, the mechanical properties, cross-sectional morphology, and reinforcement mechanism of POSS-GO/EP are thoroughly examined. The results show that the cage-like skeleton structure of POSS is embedded between the GO layers, increasing the spacing between the GO layers and leading to a steric hindrance effect, which effectively prevents their stacking and aggregation and improves the dispersion performance of GO. In particular, the 0.4 phr POSS-GO/EP sample shows the best mechanical properties. This is because, on the one hand, POSS-GO is uniformly dispersed in the EP matrix, which can more efficiently induce crack deflection and bifurcation and can also cause certain plastic deformations in the EP matrix. On the other hand, the POSS-GO/EP fracture cross-section with a stepped morphology of interlaced "canine teeth" shape is rougher and more uneven, leading to more complex crack propagation paths and greater energy consumption. Moreover, the mechanical meshing effect between the rough POSS-GO surface and the EP matrix is stronger, which is conducive to the transfer of interfacial stress and the strengthening and toughening effects of POSS-GO.
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Affiliation(s)
- Ting Xu
- College of Field Engineering, Army Engineering University of PLA, Nanjing 210007, China; (T.X.); (Z.S.); (L.A.); (Y.T.)
| | - Yumin Jiao
- 94789 Troop of PLA, Nanjing 210018, China;
| | - Zhenglian Su
- College of Field Engineering, Army Engineering University of PLA, Nanjing 210007, China; (T.X.); (Z.S.); (L.A.); (Y.T.)
| | - Qin Yin
- College of Field Engineering, Army Engineering University of PLA, Nanjing 210007, China; (T.X.); (Z.S.); (L.A.); (Y.T.)
| | - Lizhou An
- College of Field Engineering, Army Engineering University of PLA, Nanjing 210007, China; (T.X.); (Z.S.); (L.A.); (Y.T.)
| | - Yefa Tan
- College of Field Engineering, Army Engineering University of PLA, Nanjing 210007, China; (T.X.); (Z.S.); (L.A.); (Y.T.)
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Yin Q, Johnson EL, Ofen N. Neurophysiological mechanisms of cognition in the developing brain: Insights from intracranial EEG studies. Dev Cogn Neurosci 2023; 64:101312. [PMID: 37837918 PMCID: PMC10589793 DOI: 10.1016/j.dcn.2023.101312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 09/26/2023] [Accepted: 10/08/2023] [Indexed: 10/16/2023] Open
Abstract
The quest to understand how the development of the brain supports the development of complex cognitive functions is fueled by advances in cognitive neuroscience methods. Intracranial EEG (iEEG) recorded directly from the developing human brain provides unprecedented spatial and temporal resolution for mapping the neurophysiological mechanisms supporting cognitive development. In this paper, we focus on episodic memory, the ability to remember detailed information about past experiences, which improves from childhood into adulthood. We review memory effects based on broadband spectral power and emphasize the importance of isolating narrowband oscillations from broadband activity to determine mechanisms of neural coordination within and between brain regions. We then review evidence of developmental variability in neural oscillations and present emerging evidence linking the development of neural oscillations to the development of memory. We conclude by proposing that the development of oscillations increases the precision of neural coordination and may be an essential factor underlying memory development. More broadly, we demonstrate how recording neural activity directly from the developing brain holds immense potential to advance our understanding of cognitive development.
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Affiliation(s)
- Qin Yin
- Department of Psychology, Wayne State University, Detroit, MI, USA; Life-span Cognitive Neuroscience Program, Institute of Gerontology and Merrill Palmer Skillman Institute, Wayne State University, Detroit, MI, USA
| | - Elizabeth L Johnson
- Departments of Medical Social Sciences and Pediatrics, Northwestern University, Chicago, IL, USA; Department of Psychology, Northwestern University, Evanston, IL, USA
| | - Noa Ofen
- Department of Psychology, Wayne State University, Detroit, MI, USA; Life-span Cognitive Neuroscience Program, Institute of Gerontology and Merrill Palmer Skillman Institute, Wayne State University, Detroit, MI, USA.
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Shi X, Tao T, Wang Y, Han Y, Xu X, Yin Q, Wang F, Liu R, Liu X. Heavy macrophage infiltration identified by optical coherence tomography relates to plaque rupture. Ann Clin Transl Neurol 2023; 10:2334-2346. [PMID: 37822283 PMCID: PMC10723231 DOI: 10.1002/acn3.51923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 08/31/2023] [Accepted: 10/02/2023] [Indexed: 10/13/2023] Open
Abstract
OBJECTIVE Risk stratification plays a critical role in patients with asymptomatic carotid atherosclerotic stenosis. Heavy macrophage infiltration (HMC) is an important factor of plaque destabilization. However, in vivo imaging technologies and screening criteria for HMC remain limited. We aimed to (i) introduce algorithms for in vivo detection of macrophage infiltrations using optical coherence tomography (OCT) and (ii) to investigate the threshold of HMC and its association with plaque vulnerability. METHODS Ex vivo OCT images were co-registered with histopathology in 282 cross-sectional pairs from 19 carotid endarterectomy specimens. Of these, 197 randomly selected pairs were employed to define the parameters, and the remaining 85 pairs were used to evaluate the accuracy of the OCT-based algorithm in detecting macrophage infiltrations. Clinical analysis included 93 patients receiving carotid OCT evaluation. The prevalence and burden of macrophage infiltration were analyzed. Multivariable and subgroup analysis were performed to investigate the association between HMC and plaque rupture. RESULTS The sensitivity and specificity of algorithm for detecting macrophage infiltration were 88.0% and 74.9%, respectively. Of 93 clinical patients, ruptured plaques exhibited higher prevalence of macrophage infiltration than nonruptured plaques (83.7% [36/43] vs 32.0% [16/50], p < 0.001). HMC was identified when the macrophage index was greater than 60.2 (sensitivity = 74.4%, specificity = 84.0%). Multivariable analysis showed that HMC and multiple calcification were independent risk factors for non-lipid-rich plaque rupture. INTERPRETATION This study provides a novel approach and screening criteria for HMC, which might be valuable for atherosclerotic risk stratification.
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Affiliation(s)
- Xuan Shi
- Department of Neurology, Nanjing Jinling Hospital, Affiliated Hospital of Medical SchoolNanjing UniversityNanjingChina
| | - Tao Tao
- Department of Neurosurgery, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical SchoolNanjing UniversityNanjingChina
| | - Yi Wang
- Department of Neurosurgery, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical SchoolNanjing UniversityNanjingChina
| | - Yunfei Han
- Department of Neurology, Nanjing Jinling Hospital, Affiliated Hospital of Medical SchoolNanjing UniversityNanjingChina
| | - Xiaohui Xu
- Department of Neurology, Nanjing Jinling Hospital, Affiliated Hospital of Medical SchoolNanjing UniversityNanjingChina
| | - Qin Yin
- Department of Neurology, Nanjing Jinling Hospital, Affiliated Hospital of Medical SchoolNanjing UniversityNanjingChina
| | - Fang Wang
- Department of Neurology, Nanjing Jinling Hospital, Affiliated Hospital of Medical SchoolNanjing UniversityNanjingChina
| | - Rui Liu
- Department of Neurology, Nanjing Jinling Hospital, Affiliated Hospital of Medical SchoolNanjing UniversityNanjingChina
| | - Xinfeng Liu
- Department of Neurology, Nanjing Jinling Hospital, Affiliated Hospital of Medical SchoolNanjing UniversityNanjingChina
- Stroke Center and Department of Neurology, First Affiliated Hospital of University of Science and Technology of China, Division of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefeiChina
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Feng M, Tang Y, Fan M, Li L, Wang S, Yin Q, Ai H, Zhao S, Yin Y, Liu D, Ren Y, Li J, Li F, Lang J. Low-Dose Fractionated Radiotherapy Combined with Neoadjuvant Chemotherapy for T3-4 Nasopharyngeal Carcinoma Patients: The Preliminary Results of a Phase II Randomized Controlled Trial. Int J Radiat Oncol Biol Phys 2023; 117:e580-e581. [PMID: 37785764 DOI: 10.1016/j.ijrobp.2023.06.1921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Over 70% of NPC patients were local advanced NPC (LANPC). The 5-year local recurrence-free survival rate is only 70% in T3-4 patients. Neoadjuvant chemotherapy (NACT) followed with concurrent chemoradiotherapy (CCRT) was recommended for LANPC patients. Low-dose fractionated radiotherapy (LDFRT), which is <100cGy, induces enhanced cell killing by the hyper-radiation sensitivity phenomenon and potentiates effects of chemotherapy. The synergy of LDFRT and NACT has not been used in the clinical practice and few studies focused on it. A single arm study found the ORR of primary site was improved to 90% for head and neck squamous carcinoma patients treated with LDFRT and NACT. Our previous study found the ORR of lymph nodes was higher in LDFRT group for high-risk LANPC patients. However, another study showed there was no significant difference between LDFRT and control group for LANPC patients. So, we aimed to investigate the potential efficacy of this novel neoadjuvant therapy for T3-4 NPC patients. MATERIALS/METHODS A total of 60 pathological confirmed T3-4 (UICC/AJCC8th) NPC patients were prospectively enrolled in our study. They were randomly assigned to two groups. For the LDFRT group, the patients received 3 cycles of NACT (docetaxel 75mg/m2 D1, cisplatin 80mg/m2 D1) with LDFRT, and followed with CCRT. LDFRT was delivered as 50cGy per fraction twice a day to primary site on D1,2 for each cycle of NACT. The patients in the control group only received NACT and followed with CCRT. All the patients underwent IGRT. RECIST criteria and CTCAE 5.0 was used to evaluate the ORR and toxicity at post-NACT and the completion of CCRT. RESULTS From February 2022 to December 2022, 60 T3-4 NPC patients were included, and 30 patients for each group. For the primary site, the median volume reduction rate and the ORR after NACT was significantly improved in LDFRT group (69.27% vs 40.10%, p<0.001;93.33% vs 73.33%, p = 0.038). For the median volume reduction rate of primary site and lymph node, it was also obviously improved in LDFRT group (86.59% vs 55.43%, p<0.001). Though there was a tendency of ORR improvement in LDFRT group, but no significant difference (96.67% vs 83.33%, p = 0.195). After the completion of CCRT, the median volume reduction rate of primary site had an increased tendency in LDFRT group (96.16% vs 88.3%, p = 0.065), but the ORR had no statistical significance (LDFRT group: CR 45.8%, PR 54.2%; control group: CR 37.5%, PR 62.5%). For the toxicity, the incidence of grade 3-4 adverse events had no difference between two groups (p = 0.786). No grade 5 adverse events occurred. CONCLUSION LDFRT combined with NACT could obviously improve the median volume reduction rate and ORR of primary tumor for T3-4 NPC patients, and the toxicity was similar and tolerable. This novel treatment could be a promising strategy to improve treatment response and needed to be confirmed further.
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Affiliation(s)
- M Feng
- Sichuan Cancer Hospital, Chengdu, China; Department of Oncology, The Third People's Hospital of Sichuan Province, Chengdu, China
| | - Y Tang
- Sichuan Cancer Hospital, Chengdu, China
| | - M Fan
- Department of Radiation Oncology, Sichuan Cancer Hospital and Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - L Li
- Department of Radiation Oncology, Sichuan Cancer Hospital and Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - S Wang
- APHP, Hopitaux Universitaires Henri Mondor. Service d'Oncologie-Radiothérapie, Créteil, France
| | - Q Yin
- The Third People's Hospital of Sichuan Province, Chengdu, China
| | - H Ai
- Sichuan Cancer Hospital and Institute, Chengdu, Sichuan, China
| | - S Zhao
- Sichuan Cancer Hospital and Institute, Chengdu, Sichuan, China
| | - Y Yin
- Sichuan Institute of Brain Science and Brain-like Intelligence, Chengdu, China
| | - D Liu
- Sichuan Cancer Hospital and Institute, Chengdu, Sichuan, China
| | - Y Ren
- Sichuan Cancer Hospital and Institute, Chengdu, Sichuan, China
| | - J Li
- Sichuan Cancer Hospital & Institute, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - F Li
- sichuan cancer hospital and institution, Chengdu, China
| | - J Lang
- Sichuan Cancer Hospital and Institute, Chengdu, Sichuan, China
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Zhang W, Zhao M, Pu Z, Yin Q, Shui Y. Chicoric Acid Presented NLRP3-Mediated Pyroptosis through Mitochondrial Damage by PDPK1 Ubiquitination in an Acute Lung Injury Model. Am J Chin Med 2023; 51:1431-1457. [PMID: 37530505 DOI: 10.1142/s0192415x23500659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/03/2023]
Abstract
Chicoric acid (CA), a functional food ingredient, is a caffeic acid derivative that is mainly found in lettuce, pulsatilla, and other natural plants. However, the anti-inflammatory effects of CA in acute lung injury (ALI) remain poorly understood. This study was conducted to investigate potential drug usage of CA for ALI and the underlying molecular mechanisms of inflammation. C57BL/6 mice were given injections of liposaccharide (LPS) to establish the in vivo model. Meanwhile, BMDM cells were stimulated with LPS+ATP to build the in vitro model. CA significantly alleviated inflammation and oxidative stress in both the in vivo and in vitro models of ALI through the inhibition of NLR family pyrin domain-containing 3 (NLRP3)-mediated pyroptosis. In addition, CA attenuated mitochondrial damage to suppress NLRP3-mediated pyroptosis in the in vivo and in vitro models of ALI by suppressing the production of reactive oxygen species (ROS) via inhibiting the Akt/nuclear factor erythroid 2-related factor 2 (Nrf2) pathway. CA inhibited the interaction between Akt at T308 and phosphoinositide-dependent kinase-1 (PDPK1) at S549, thus promoting the phosphorylation of the Akt protein. Furthermore, CA directly targeted the PDPK1 protein and accelerated PDPK1 ubiquitination, indicating that 91-GLY, 111-LYS, 126-TYR, 162-ALA, 205-ASP, and 223-ASP might be responsible for the interaction between PDPK1 and CA. In conclusion, CA from Lettuce alleviated NLRP3-mediated pyroptosis in the ALI model through ROS-induced mitochondrial damage by activating Akt/Nrf2 pathway via PDPK1 ubiquitination. The present study suggests that CA might be a potential therapeutic drug to treat or prevent ALI in pneumonia or COVID-19.
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Affiliation(s)
- Weiwei Zhang
- Department of Pharmacy, Second Affiliated Hospital of Wannan Medical College, Wuhu 241001, Anhui, P. R. China
- Graduate School, Wannan Medical College, Wuhu 241001, Anhui, P. R. China
| | - Min Zhao
- Department of Pharmacy, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361003, Fujian, P. R. China
| | - Zhichen Pu
- Drug Clinical Evaluation, Yijishan Hospital of Wannan Medical College, Wuhu 241001, Anhui, P. R. China
| | - Qin Yin
- Department of Pharmacy, Second Affiliated Hospital of Wannan Medical College, Wuhu 241001, Anhui, P. R. China
- Wannan Medical College, Wuhu 241001, Anhui, P. R. China
| | - Yinping Shui
- Graduate School, Wannan Medical College, Wuhu 241001, Anhui, P. R. China
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Liang Y, Yin Q, Jiang Z, Yan H, Nian Y. Pollution characteristics and microbial community succession of a rural informal landfill in an arid climate. Ecotoxicol Environ Saf 2023; 262:115295. [PMID: 37531925 DOI: 10.1016/j.ecoenv.2023.115295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 07/13/2023] [Accepted: 07/21/2023] [Indexed: 08/04/2023]
Abstract
Informal landfills pose potential threats to the environment and human health due to the lack of anti-seepage measures. However, little research has been conducted on the distribution of pollutants in informal landfill sites situated in arid climates, as well as the underlying interaction mechanisms between environmental factors and microbial structure. In this study, we sought to investigate the pollution characteristics and microbial community succession of the landfill in northern China. The results revealed that heavy metals in the landfill showed poor mobility and migration. The lower layers of the garbage samples had higher water-soluble contents of heavy metals compared to the upper layers. The landfill-derived dissolved organic matter (DOM) was found to originate from microbial production, and four fluorescent components were identified, including fulvic acid-like substances, humus-like substances, and protein-like components. Fluorescence intensity and humification degree increased with increasing depth. The microbial diversity and richness decreased with sampling depth. The most abundant phyla in the samples were Proteobacteria, unidentified_Bacteria, Bacteroidota, Firmicutes, Myxococcota, Gemmatimonadota, Actinobacteria, and Deinococcota. As the sampling depth increased, Proteobacteria decreased, while Bacteroidota and Firmicutes showed a remarkable increase, with little variation observed in the other phyla. The partial least-squares path model (PLS-PM) results indicated that pH had the most significant effect on microbial abundance and diversity (direct effect value = -5.560), while DOM and heavy metals had the opposite effect, with direct effects of 1.838 and 3.231, respectively. DOM was identified as the driving factor for the variation in other environmental factors. The redundancy analysis (RDA) showed that the dominant genera were greatly influenced by Cu, humic-like substances, and protein-like substances. Among them, Bacillus, Alcanivorax, Devosia, and Chryseolinea may play important roles in the remediation of landfills. Our study not only gains a deeper understanding of the pollution risk of informal landfills in arid climates, but also provides a scientific basis for the future treatment and restoration of contaminated sites associated with landfills.
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Affiliation(s)
- Yu Liang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China; Research Center of Environmental Pollution Control Engineering Technology, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China
| | - Qin Yin
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China; Research Center of Environmental Pollution Control Engineering Technology, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China
| | - Zijiang Jiang
- China University of Mining & Technology, Beijing 100083, PR China
| | - Haihong Yan
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China; Research Center of Environmental Pollution Control Engineering Technology, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China.
| | - Yuegang Nian
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China; Research Center of Environmental Pollution Control Engineering Technology, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China.
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14
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Ren E, Xiao H, Li J, Yu H, Liu B, Wang G, Sun X, Duan M, Hang C, Zhang G, Wu C, Li F, Zhang H, Zhang Y, Guo W, Qi W, Yin Q, Zhao Y, Xie M, Li C. CLINICAL CHARACTERISTICS AND PREDICTORS OF MORTALITY DIFFER BETWEEN PULMONARY AND ABDOMINAL SEPSIS. Shock 2023; 60:42-50. [PMID: 37267265 DOI: 10.1097/shk.0000000000002151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
ABSTRACT Background: Pulmonary sepsis and abdominal sepsis have pathophysiologically distinct phenotypes. This study aimed to compare their clinical characteristics and predictors of mortality. Methods: In this multicenter retrospective trial, 1,359 adult patients who fulfilled the Sepsis-3 criteria were enrolled and classified into the pulmonary sepsis or abdominal sepsis groups. Plasma presepsin was measured, and the scores of Acute Physiology and Chronic Health Evaluation (APACHE) II, Mortality in Emergency Department Sepsis (MEDS), and Simplified Acute Physiology Score (SAPS) II were calculated at enrollment. Data on 28-day mortality were collected for all patients. Results: Compared with patients with abdominal sepsis (n = 464), patients with pulmonary sepsis (n = 895) had higher 28-day mortality rate, illness severity scores, incidence of shock and acute kidney injury, and hospitalization costs. Lactate level and APACHE II and MEDS scores were independently associated with 28-day mortality in both sepsis types. Independent predictors of 28-day mortality included Pa o2 /F io2 ratio (hazard ratio [HR], 0.998; P < 0.001) and acute kidney injury (HR, 1.312; P = 0.039) in pulmonary sepsis, and SAPS II (HR, 1.037; P = 0.017) in abdominal sepsis. A model that combined APACHE II score, lactate, and MEDS score or SAPS II score had the best area under the receiver operating characteristic curve in predicting mortality in patients with pulmonary sepsis or abdominal sepsis, respectively. Interaction term analysis confirmed the association between 28-day mortality and lactate, APACHE II score, MEDS score, SAPS II score, and shock according to the sepsis subgroups. The mortality of patients with pulmonary sepsis was higher than that of patients with abdominal sepsis among patients without shock (32.9% vs. 8.8%; P < 0.001) but not among patients with shock (63.7 vs. 48.4%; P = 0.118). Conclusions: Patients with pulmonary sepsis had higher 28-day mortality than patients with abdominal sepsis. The study identified sepsis subgroup-specific mortality predictors. Shock had a larger effect on mortality in patients with abdominal sepsis than in those with pulmonary sepsis.
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Affiliation(s)
- Enfeng Ren
- Department of Emergency Medicine, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Hongli Xiao
- Department of Emergency Medicine, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Jiebin Li
- Department of Emergency Medicine, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Han Yu
- Department of Emergency Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Bo Liu
- Department of Emergency Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Guoxing Wang
- Department of Emergency Medicine, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Xuelian Sun
- Department of Emergency Medicine, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Meili Duan
- Department of Critical Care Medicine, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Chenchen Hang
- Department of Emergency Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Guoqiang Zhang
- Department of Emergency Medicine, China-Japan Friendship Hospital, Peking Union Medical College, Beijing, China
| | - Caijun Wu
- Department of Emergency Medicine, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Fengjie Li
- Department of Emergency Medicine, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Haiyan Zhang
- Department of Emergency Medicine, The Hospital of Shunyi District Beijing, China Medical University, Beijing, China
| | - Yun Zhang
- Department of Emergency Medicine, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Wei Guo
- Department of Emergency Medicine, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Wenjie Qi
- Department of Infectious Disease, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Qin Yin
- Department of Emergency Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Yunzhou Zhao
- Department of Emergency Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Miaorong Xie
- Department of Emergency Medicine, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Chunsheng Li
- Department of Emergency Medicine, Beijing Friendship Hospital, Capital Medical University, Beijing, China
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Sun L, Zhao Y, Li Y, Zhai W, Gao F, Yin Q, Cheng W, Wang Z, Zeng Y. Effect of continuous subanesthetic esketamine infusion on postoperative fatigue in patients undergoing laparoscopic radical resection for colorectal cancer: a randomized controlled study. Am J Cancer Res 2023; 13:2554-2563. [PMID: 37424809 PMCID: PMC10326566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Accepted: 05/11/2023] [Indexed: 07/11/2023] Open
Abstract
This study aimed to examine the effect of subanesthetic esketamine on postoperative fatigue in patients who underwent laparoscopic colorectal surgery. A total of 62 patients, including 32 in the esketamine group and 30 in the control group, were analysed in this study. Compared with the control group, the patients in the esketamine group had reduced Identity-Consequence Fatigue Scale (ICFS) on the 3rd and 7th days after surgery (P<0.05). There were also significant differences in the Positive and Negative Affect Schedule (PANAS) scale between the two groups. The positive affect scale was higher on postoperative day 3 (POD3), while the negative affect scale was lower on POD3 and postoperative day 7 (POD7) in the esketamine group than in the control group. However, the scores of postoperative hand grip strength, neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), Numeric Rating Scale (NRS) and Athens Insomnia Scale (AIS) were not significantly different between the two groups. Furthermore, mediation analysis showed that esketamine played an anti-fatigue role through improving emotional heath. Importantly, no adverse reactions occurred at this dosage of esketamine. Finally, our study suggested that subanesthetic esketamine improved postoperative fatigue, stabilized postoperative mood, reduced intraoperative remifentanil consumption, and promoted postoperative intestinal function recovery without increasing adverse reactions.
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Affiliation(s)
- Lei Sun
- Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
- Affiliated Hospital of Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
| | - Yue Zhao
- Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
- Affiliated Hospital of Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
| | - Yan Li
- Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
- Affiliated Hospital of Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
| | - Wenshan Zhai
- Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
- Affiliated Hospital of Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
| | - Fang Gao
- Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
- Affiliated Hospital of Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
| | - Qin Yin
- Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
- Affiliated Hospital of Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
| | - Wei Cheng
- Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
- Affiliated Hospital of Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
- Huai’an First People’s Hospital, The Affiliated Huai’an No. 1 People’s Hospital of Nanjing Medical UniversityHuai’an 223399, Jiangsu, China
| | - Zhiping Wang
- Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
- Affiliated Hospital of Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
| | - Yinming Zeng
- Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
- Affiliated Hospital of Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
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Shi LL, Yang T, Jiang N, Lyu Y, Guo HM, Zou XP, Yang H, Yin Q, Zhang NN. A comprehensive analysis of partial peristalsis recovery after peroral endoscopic myotomy in patients with achalasia. J Dig Dis 2023. [PMID: 37210606 DOI: 10.1111/1751-2980.13192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 05/17/2023] [Accepted: 05/18/2023] [Indexed: 05/22/2023]
Abstract
OBJECTIVE To determine whether per-oral endoscopic myotomy (POEM) improves esophageal peristalsis and investigate the association between the presence of peristalsis after POEM and clinico-physiological features. METHODS In a single center retrospective study, data were gathered from patients with achalasia who underwent POEM between January 2014 and May 2016. Parameters of high-resolution esophageal manometry, demographics data, Eckardt score and post-procedural gastroesophageal reflux disease questionnaire (GERD-Q) score were collected. Presence of weak and fragmented contraction was defined as partial recovery of esophageal peristalsis based on Chicago classification v3.0. Logistic regression analysis was used to study variables associated with partial recovery of peristalsis after POEM. RESULTS A total of 103 patients were enrolled. Esophageal contractile activity was observed in the distal two-thirds of the esophagus in 24 patients. The Eckardt score, integrated relaxation pressure (IRP) and lower esophageal sphincter (LES) resting pressure were significantly decreased after POEM. Univariate analyses revealed the correlation between preprocedural LES resting pressure as well as weight loss score, reflux score, Eckardt score and peristaltic recovery (all P < 0.05). Via multivariate analysis, preprocedural LES resting pressure (P = 0.013) and preprocedural Eckardt score (P = 0.002) were correlated with peristalsis recovery. Symptoms of gastroesophageal reflux and reflux esophagitis after POEM were less frequent in those with partial recovery of peristalsis (all P < 0.05). CONCLUSIONS Normalization of esophagogastric junction relaxation pressure achieved by POEM is associated with partial recovery of esophageal peristalsis in some patients. Preprocedural LES resting pressure and symptom score are predictive of the peristalsis recovery which prevents GERD symptoms and reflux esophagitis.
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Affiliation(s)
- Liang Liang Shi
- Department of Gastroenterology, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Tian Yang
- Department of Gastroenterology, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Ni Jiang
- Department of Gastroenterology, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Ying Lyu
- Department of Gastroenterology, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Hui Min Guo
- Department of Gastroenterology, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Xiao Ping Zou
- Department of Gastroenterology, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Hua Yang
- Department of Gastroenterology, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Qin Yin
- Department of Gastroenterology, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Ni Na Zhang
- Department of Gastroenterology, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, Jiangsu Province, China
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Zhao Y, Li Y, Sun L, Gao F, Yin Q, Cheng W, Wang Z, Zeng Y. Perioperative pregabalin reduced fatigue scores after thoracoscopic pneumonectomy in a RCT of NSCLC patients. Am J Cancer Res 2023; 13:2201-2212. [PMID: 37293162 PMCID: PMC10244089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 04/28/2023] [Indexed: 06/10/2023] Open
Abstract
Postoperative fatigue is prevalent, but non-small cell lung cancer (NSCLC) patients receive poor treatment after video-assisted thoracoscopic surgery (VATS). The main objective of the present trial is to observe the anti-fatigue function of pregabalin in NSCLC patients after surgery. Patients requiring VATS pneumonectomy were randomized into two groups (n=33): the experimental and control groups. The results showed that the experimental group's Identity-Consequence Fatigue Scale (ICFS) scores on days 1, 3, 7, and 30 after the operation decreased more than those of the control group. On days 1, 2, and 3 following surgery, there were significant differences in the Visual Analog Scale (VAS) scores, the incidence rate of anxiety and depression, and the Athens Insomnia Scale (AIS) scores between the two groups. Furthermore, we discovered that the ICFS scores were positively related to the VAS scores, Hospital Anxiety and Depression Scale (HADS) scores, and AIS scores. Postoperative fatigue and pain, on the other hand, were more closely related. Finally, this analysis suggested that perioperative pregabalin can reduce postoperative fatigue in NSCLC patients by relieving postoperative pain, anxiety, and depression, improving postoperative sleep quality, and promoting early recovery.
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Affiliation(s)
- Yue Zhao
- Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
- Affiliated Hospital of Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
| | - Yan Li
- Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
- Affiliated Hospital of Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
| | - Lei Sun
- Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
- Affiliated Hospital of Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
| | - Fang Gao
- Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
- Affiliated Hospital of Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
| | - Qin Yin
- Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
- Affiliated Hospital of Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
| | - Wei Cheng
- Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
- Affiliated Hospital of Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
- Huai’an First People’s Hospital, The Affiliated Huai’an No. 1 People’s Hospital of Nanjing Medical UniversityHuai’an 223399, Jiangsu, China
| | - Zhiping Wang
- Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
- Affiliated Hospital of Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
| | - Yinming Zeng
- Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
- Affiliated Hospital of Xuzhou Medical UniversityXuzhou 221002, Jiangsu, China
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Yin Q, Wang S, Yang J, Fan C, Yu Y, Li J, Mei F, Zhang S, Xi R, Zhang X. Nobiletin attenuates monocrotaline-induced pulmonary arterial hypertension through PI3K/Akt/STAT3 pathway. J Pharm Pharmacol 2023:7158377. [PMID: 37158759 DOI: 10.1093/jpp/rgad045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 04/21/2023] [Indexed: 05/10/2023]
Abstract
OBJECTIVES Nobiletin is a flavonoid found in the peel of Citrus sinensis (oranges). The purpose of this study is to investigate whether Nobiletin can alleviate the monocrotaline (MCT)-induced pulmonary arterial hypertension (PAH) and explore the underlying mechanisms. METHODS The PAH rat model was replicated by subcutaneous injection of MCT. Nobiletin (1, 5 and 10 mg/kg) was administered by gavage from day 1 to day 21. After 21 days of MCT injection, the mean pulmonary artery pressure, pulmonary vascular resistance, Fulton Index, pulmonary artery remodelling, blood routine parameters, liver and kidney functions was measured. The level of inflammatory cytokines and PI3K/Akt/STAT3 were detected by qPCR, ELISA and western blot, the proliferation of pulmonary artery smooth muscle cells (PASMCs) was evaluated by CCK-8. KEY FINDINGS Nobiletin (10 mg/kg) inhibited the MCT-induced increase in mean pulmonary artery pressure and pulmonary vascular resistance, right ventricular hypertrophy and pulmonary artery remodelling in rats. Nobiletin decreased the levels of inflammatory cytokines and phosphorylation level of PI3K/Akt/STAT3 in lungs of MCT-treated rats. Nobiletin inhibited the proliferation and lowered the inflammatory cytokines level induced by PDGF-BB in PASMCs. CONCLUSION Nobiletin attenuates MCT-induced PAH, and the potential mechanism is to inhibit inflammation through PI3K/Akt/STAT3 pathway.
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Affiliation(s)
- Qin Yin
- Department of Respiratory and Critical Care Medicine, Hubei Provincial Hospital of Integrated Chinese and Western Medicine, Wuhan, Hubei, China
| | - Sen Wang
- Department of Forensic Medicine, Guangxi Medical University, Nanning, Guangxi, China
| | - Jie Yang
- Department of Respiratory and Critical Care Medicine, Hubei Provincial Hospital of Integrated Chinese and Western Medicine, Wuhan, Hubei, China
| | - Cunyu Fan
- Department of Respiratory and Critical Care Medicine, Hubei Provincial Hospital of Integrated Chinese and Western Medicine, Wuhan, Hubei, China
| | - Yihan Yu
- Department of Respiratory and Critical Care Medicine, Hubei Provincial Hospital of Integrated Chinese and Western Medicine, Wuhan, Hubei, China
| | - Juan Li
- The First Clinical College of Hubei University of Chinese Medicine, Wuhan, China
| | - Feng Mei
- The First Clinical College of Hubei University of Chinese Medicine, Wuhan, China
| | - Shiwei Zhang
- Department of Pathology, Hubei Provincial Hospital of Integrated Chinese and Western Medicine, Wuhan, Hubei, China
| | - Rengang Xi
- Department of Radiology, Hubei Provincial Hospital of Integrated Chinese and Western Medicine, Wuhan, Hubei, China
| | - Xiuyun Zhang
- Department of Pathology, Renmin Hospital of Wuhan University, Wuhan, Hubei, 430060, China
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19
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Zhang M, Wang B, Li XT, Yin Q, Liang G, Li SC. Impact of tectoridin on the pharmacokinetics of florfenicol via targeting cytochrome P450 and P-glycoprotein of rats. Xenobiotica 2023; 53:429-437. [PMID: 37781957 DOI: 10.1080/00498254.2023.2261040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 09/16/2023] [Indexed: 10/03/2023]
Abstract
Belamcanda chinensis (L.) DC, commonly used with florfenicol in Chinese veterinary clinics for respiratory tract infections, contains the major effective isoflavone, tectoridin (TEC). This study aimed to investigate the impact of TEC co-administration on the pharmacokinetics of florfenicol in vivo.Male rats received oral TEC (50 mg/kg BW) or sterile water for seven days, followed by a single oral dose of florfenicol (25 mg/kg BW) on the 8th day. Non-compartmental methods analysed the pharmacokinetics of florfenicol, while real-time reverse transcription polymerase chain reaction (RT-PCR), Western blot, and immunohistochemical analyses measured expression levels of cytochrome P450 (CYP) isoforms in the liver and P-glycoprotein (P-gp) in the jejunum.TEC significantly decreased florfenicol's AUC(0-∞), MRT(0-∞), t1/2z, Vz/F, and Cmax by 24.75%, 18.43%, 55.47%, 43.05%, and 19.48%, while increasing CLz/F by 33.33%. TEC also up-regulated hepatic CYP1A2 and CYP3A1 mRNA expression, as well as intestinal MDR1, by 1.39-fold, 1.85-fold, and 1.65-fold. This coincided with a respective increase in protein expression by 1.37-fold, 1.39-fold, and 1.43-fold.These findings suggest that TEC-induced alterations in the pharmacokinetics of florfenicol may be attributed to increased CYP and P-gp expression. Further investigations are warranted to understand the implications of these findings on the clinical effectiveness of florfenicol in veterinary practice.
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Affiliation(s)
- Min Zhang
- Sichuan Key Laboratory of Animal Genetics and Breeding, Sichuan Animal Science Academy, Chengdu, China
- Veterinary Natural Medicine Research and GCP Experimental Animal Centre, Lezhi, China
| | - Bin Wang
- Sichuan Key Laboratory of Animal Genetics and Breeding, Sichuan Animal Science Academy, Chengdu, China
- Veterinary Natural Medicine Research and GCP Experimental Animal Centre, Lezhi, China
| | - Xu-Ting Li
- Sichuan Key Laboratory of Animal Genetics and Breeding, Sichuan Animal Science Academy, Chengdu, China
- Veterinary Natural Medicine Research and GCP Experimental Animal Centre, Lezhi, China
| | - Qin Yin
- Sichuan Key Laboratory of Animal Genetics and Breeding, Sichuan Animal Science Academy, Chengdu, China
| | - Ge Liang
- Sichuan Key Laboratory of Animal Genetics and Breeding, Sichuan Animal Science Academy, Chengdu, China
- Veterinary Natural Medicine Research and GCP Experimental Animal Centre, Lezhi, China
| | - Si-Cong Li
- Sichuan Key Laboratory of Animal Genetics and Breeding, Sichuan Animal Science Academy, Chengdu, China
- Veterinary Natural Medicine Research and GCP Experimental Animal Centre, Lezhi, China
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20
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Liang K, Tu Q, Shen X, Dai J, Yin Q, Xue J, Ding X. Modeling and Verification of Rolling Resistance Torque of High-Speed Rubber Track Assembly Considering Hysteresis Loss. Polymers (Basel) 2023; 15:polym15071642. [PMID: 37050258 PMCID: PMC10096501 DOI: 10.3390/polym15071642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 03/16/2023] [Accepted: 03/21/2023] [Indexed: 03/29/2023] Open
Abstract
Due to the viscoelasticity of rubber materials, hysteresis loss due to deformation is the main reason for the rolling resistance of high-speed rubber tracks. Since the structure and material of high-speed rubber track assemblies are different from traditional tires and metal tracks, the rolling resistance theory of traditional wheeled and tracked vehicles is not applicable. Therefore, in order to determine the rolling resistance scientifically and accurately, the mechanism research of the rolling resistance of high-speed rubber track assembly is the key to the design of high-speed rubber crawler vehicles. In this paper, the stress–strain characteristics of rubber track under the action of compression, tension, bending, and driving were studied. The strain load spectrum of rubber tracks was established, and the strain cyclic load was extracted by the rainflow method. The temperature model of the rubber track was developed based on its dynamic characteristics. On the basis of energy conservation, the hysteresis loss of rubber is equivalent to the energy consumption of rolling resistance, and the theoretical model of rolling resistance of high-speed rubber track assembly is established. In accordance with the model above, the key influencing factors and changing trends of rolling resistance are analyzed, which provides a theoretical basis for the performance optimization of high-speed rubber track assembly.
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21
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Tian Y, Zhu YY, Yu J, Liu DH, Yin Q, Ni SF, Bai ST, Zhang X. Iridium-Catalyzed Asymmetric Hydrogenation of Tetrasubstituted Exocyclic Olefins: An Efficient Access to Dexmethylphenidate. CCS Chem 2023. [DOI: 10.31635/ccschem.023.202202601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023] Open
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22
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Mao Q, Lin X, Yin Q, Liu P, Zhang Y, Qu S, Xu J, Cheng W, Luo X, Kang L, Taximaimaiti R, Zheng C, Zhang H, Wang X, Ren H, Cao Y, Lin J, Luo X. A significant, functional and replicable risk KTN1 variant block for schizophrenia. Sci Rep 2023; 13:3890. [PMID: 36890161 PMCID: PMC9995530 DOI: 10.1038/s41598-023-27448-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 01/02/2023] [Indexed: 03/10/2023] Open
Abstract
Cortical and subcortical structural alteration has been extensively reported in schizophrenia, including the unusual expansion of gray matter volumes (GMVs) of basal ganglia (BG), especially putamen. Previous genome-wide association studies pinpointed kinectin 1 gene (KTN1) as the most significant gene regulating the GMV of putamen. In this study, the role of KTN1 variants in risk and pathogenesis of schizophrenia was explored. A dense set of SNPs (n = 849) covering entire KTN1 was analyzed in three independent European- or African-American samples (n = 6704) and one mixed European and Asian Psychiatric Genomics Consortium sample (n = 56,418 cases vs. 78,818 controls), to identify replicable SNP-schizophrenia associations. The regulatory effects of schizophrenia-associated variants on the KTN1 mRNA expression in 16 cortical or subcortical regions in two European cohorts (n = 138 and 210, respectively), the total intracranial volume (ICV) in 46 European cohorts (n = 18,713), the GMVs of seven subcortical structures in 50 European cohorts (n = 38,258), and the surface areas (SA) and thickness (TH) of whole cortex and 34 cortical regions in 50 European cohorts (n = 33,992) and eight non-European cohorts (n = 2944) were carefully explored. We found that across entire KTN1, only 26 SNPs within the same block (r2 > 0.85) were associated with schizophrenia across ≥ 2 independent samples (7.5 × 10-5 ≤ p ≤ 0.048). The schizophrenia-risk alleles, which increased significantly risk for schizophrenia in Europeans (q < 0.05), were all minor alleles (f < 0.5), consistently increased (1) the KTN1 mRNA expression in 12 brain regions significantly (5.9 × 10-12 ≤ p ≤ 0.050; q < 0.05), (2) the ICV significantly (6.1 × 10-4 ≤ p ≤ 0.008; q < 0.05), (3) the SA of whole (9.6 × 10-3 ≤ p ≤ 0.047) and two regional cortices potentially (2.5 × 10-3 ≤ p ≤ 0.042; q > 0.05), and (4) the TH of eight regional cortices potentially (0.006 ≤ p ≤ 0.050; q > 0.05), and consistently decreased (1) the BG GMVs significantly (1.8 × 10-19 ≤ p ≤ 0.050; q < 0.05), especially putamen GMV (1.8 × 10-19 ≤ p ≤ 1.0 × 10-4; q < 0.05, (2) the SA of four regional cortices potentially (0.010 ≤ p ≤ 0.048), and (3) the TH of four regional cortices potentially (0.015 ≤ p ≤ 0.049) in Europeans. We concluded that we identified a significant, functional, and robust risk variant block covering entire KTN1 that might play a critical role in the risk and pathogenesis of schizophrenia.
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Affiliation(s)
- Qiao Mao
- Department of Psychosomatic Medicine, People's Hospital of Deyang City, Deyang, 618000, Sichuan, China
| | - Xiandong Lin
- Laboratory of Radiation Oncology and Radiobiology, Fujian Provincial Cancer Hospital, the Teaching Hospital of Fujian Medical University, Fuzhou, 350014, Fujian, China
| | - Qin Yin
- Department of Respiratory and Critical Care Medicine, Hubei Provincial Hospital of Integrated Chinese and Western Medicine, Wuhan, 430000, Hubei, China
| | - Ping Liu
- Department of Psychosomatic Medicine, People's Hospital of Deyang City, Deyang, 618000, Sichuan, China
| | - Yong Zhang
- Tianjin Mental Health Center, Tianjin, 300222, China
| | - Shihao Qu
- Zhuhai Center for Maternal and Child Health Care, Zhuhai, Guangdong, 519001, China
| | - Jianying Xu
- Zhuhai Center for Maternal and Child Health Care, Zhuhai, Guangdong, 519001, China
| | - Wenhong Cheng
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200030, China
| | - Xinqun Luo
- Department of Neurosurgery, The First Hospital, Fujian Medical University, Fuzhou, 350004, Fujian, China
| | - Longli Kang
- Key Laboratory for Molecular Genetic Mechanisms and Intervention Research On High Altitude Diseases of Tibet Autonomous Region, Xizang Minzu University School of Medicine, Xiangyang, 712082, Shaanxi, China
| | - Reyisha Taximaimaiti
- Department of Neurology, Shanghai Tongren Hospital, Shanghai Jiao Tong University, Shanghai, 200080, China
| | - Chengchou Zheng
- Minqing Psychiatric Hospital, Minqing, 350800, Fujian, China
| | - Huihao Zhang
- The First Affiliated Hospital, Fujian Medical University, Fuzhou, 350001, China
| | - Xiaoping Wang
- Department of Neurology, The 1st People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 201620, USA
| | - Honggang Ren
- Department of Internal Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yuping Cao
- Department of Psychiatry, Second Xiangya Hospital, Central South University, China National Clinical Research Center On Mental Disorders, China National Technology Institute On Mental Disorders, Changsha, 410011, Hunan, China.
| | - Jie Lin
- Fujian Center for Disease Control and Prevention, Fuzhou, 350012, Fujian, China.
- Fujian Institute of Preventive Medicine, Fuzhou, 350012, Fujian, China.
| | - Xingguang Luo
- Beijing Huilongguan Hospital, Peking University Huilongguan School of Clinical Medicine, Beijing, 100096, China.
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Wu YJ, Zhang SS, Yin Q, Lei M, Wang QH, Chen WG, Luo TT, Zhou P, Ji CL. α-Mangostin Inhibited M1 Polarization of Macrophages/Monocytes in Antigen-Induced Arthritis Mice by Up-Regulating Silent Information Regulator 1 and Peroxisome Proliferators-Activated Receptor γ Simultaneously. Drug Des Devel Ther 2023; 17:563-577. [PMID: 36860800 PMCID: PMC9969869 DOI: 10.2147/dddt.s397914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 02/20/2023] [Indexed: 02/24/2023] Open
Abstract
Background α-Mangostin (MG) showed the potentials in alleviating experimental arthritis, inhibiting inflammatory polarization of macrophages/monocytes, and regulating peroxisome proliferators-activated receptor γ (PPAR-γ) and silent information regulator 1 (SIRT1) signals. The aim of this study was to analyze the correlations among the above-mentioned properties. Methods Antigen-induced arthritis (AIA) was established in mouse, which was treated with MG in combination with SIRT1/PPAR-γ inhibitors to clarify the role of the two signals in the anti-arthritic actions. Pathological changes were systematically investigated. Phenotypes of cells were investigated by flow cytometry. Expression and co-localization of SIRT1 and PPAR-γ proteins in joint tissues were observed by the immunofluorescence method. Finally, clinical implications from the synchronous up-regulation of SIRT1 and PPAR-γ were validated by experiments in vitro. Results SIRT1 and PPAR-γ inhibitors (nicotinamide and T0070097) reduced the therapeutic effects of MG on AIA mice, and abrogated MG-induced up-regulation of SIRT1/PPAR-γ and inhibition of M1 polarization in macrophages/monocytes. MG has a good binding affinity to PPAR-γ, and MG promoted the co-expression of SIRT1 and PPAR-γ in joints. Synchronously activating SIRT1 and PPAR-γ was revealed to be necessary by MG to repress inflammatory responses in THP-1 monocytes. Conclusion MG binds PPAR-γ and excites this signaling to initiate ligand-dependent anti-inflammatory activity. Due to certain unspecified signal transduction crosstalk mechanism, it then promoted SIRT1 expression and further limited inflammatory polarization of macrophages/monocytes in AIA mice.
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Affiliation(s)
- Yi-Jin Wu
- Department of Pharmacy, The Second Affiliated Hospital of Wannan Medical College, Wuhu, 241000, People’s Republic of China,Xin’an Medical Research Center, The First Affiliated Hospital of Wannan Medical College, Wuhu, 241000, People’s Republic of China,Vascular Diseases Research Center of Wannan Medical College, Wuhu, 241000, People’s Republic of China
| | - Sa-Sa Zhang
- Department of Pharmacy, The Second Affiliated Hospital of Wannan Medical College, Wuhu, 241000, People’s Republic of China
| | - Qin Yin
- Department of Pharmacy, The Second Affiliated Hospital of Wannan Medical College, Wuhu, 241000, People’s Republic of China
| | - Ming Lei
- Xin’an Medical Research Center, The First Affiliated Hospital of Wannan Medical College, Wuhu, 241000, People’s Republic of China
| | - Qi-Hai Wang
- School of Pharmacy, Anhui College of Traditional Chinese Medicine, Wuhu, Anhui, 241000, People’s Republic of China
| | - Wen-Gang Chen
- Department of Pharmacy, The Second Affiliated Hospital of Wannan Medical College, Wuhu, 241000, People’s Republic of China
| | - Ting-Ting Luo
- Department of Pharmacy, The Second Affiliated Hospital of Wannan Medical College, Wuhu, 241000, People’s Republic of China
| | - Peng Zhou
- School of Integrated Chinese and Western Medicine, Anhui University of Chinese Medicine, Hefei, 230000, People’s Republic of China,Correspondence: Peng Zhou; Cong-Lan Ji, Email ;
| | - Cong-Lan Ji
- School of Pharmacy, Anhui College of Traditional Chinese Medicine, Wuhu, Anhui, 241000, People’s Republic of China,Research Center of Integration of Traditional Chinese and Western Medicine, Wannan Medical College, Wuhu, 241000, People’s Republic of China
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24
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Wu KQ, Li H, Zhou A, Yang WR, Yin Q. Palladium-Catalyzed Chemo- and Regioselective C-H Bond Functionalization of Phenols with 1,3-Dienes. J Org Chem 2023; 88:2599-2604. [PMID: 36701645 DOI: 10.1021/acs.joc.2c02697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Chemo- and site-selective functionalization of phenols offers a rapid strategy for the synthesis of phenol derivatives with diverse structures. Herein, we report a Pd-catalyzed regioselective C-H bond allylic alkylation of phenols with 1,3-dienes, which has precision reactivity at the ortho C-H bond of 2-naphthols, 1-naphthols, and electron-rich phenols. The reaction is accelerated by a diphosphine ligand, does not need any other additive, and features broad substrate scope and good chemo- and regioselectivity. In addition, we have also investigated the asymmetric variant, and the product could be achieved in up to 55% ee.
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Affiliation(s)
- Ke-Qin Wu
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China.,Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Hui Li
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Ao Zhou
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Wei-Ran Yang
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Qin Yin
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
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Xiong F, Yin Q, Wang J, Wei C, Gu S, Liu Y. A novel modified McLaughlin surgery for treating locked chronic posterior shoulder dislocation. BMC Musculoskelet Disord 2023; 24:114. [PMID: 36765319 PMCID: PMC9921029 DOI: 10.1186/s12891-023-06221-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Accepted: 02/03/2023] [Indexed: 02/12/2023] Open
Abstract
BACKGROUND Posterior shoulder dislocation is an uncommon orthopaedics injury and is frequently missed or misdiagnosed, accounting for 2%-4% of all shoulder dislocations, and is associated with the reverse Hill-Sachs lesion. Once posterior shoulder dislocation develops into a chronic disease, it will bring a lot of trouble to the treatment, especially in repairing the humeral defects. Surgical strategies are also developing and innovating to deal with this injury, including transfer of subscapularis tendon or lesser tubercle, humeral rotational osteotomy, autogenous bone graft or allograft. Shoulder replacement seems to be the ultimate and only option when the injury becomes irreparable, although some studies have shown unsatisfactory follow-up results. Considering no gold-standard treatment for locked posterior shoulder dislocation, we described a novel modified McLaughlin procedure for locked chronic posterior shoulder dislocation and evaluated the functional outcomes. METHODS This study included five locked chronic posterior shoulder dislocation patients with an associated reverse Hill-Sachs lesion, in which the compression surface covered 30-40% of the humeral head. The mean period from injury to receiving surgery was 11.6 weeks (6-24 weeks). All five patients underwent the modified McLaughlin procedure, mainly divided into three steps, including open reduction, transfer of the partial lesser tuberosity and artificial bone to repair the reverse Hill-Sachs defects. The kernel technique was to fix the transferred tuberosity with two lag screws and strengthen it with two Ethibond sutures. The Constant-Murley score (CMS), the range of shoulder motion and the complications were recorded to assess and compare the functional situation of the shoulder postoperatively and postoperatively. RESULTS After an average of 19.8 months (12-30) of follow-up, the mean CMS improved to 85.8 ± 4.9 (79-91) compared with 46.0 ± 4.5 (40-52) preoperatively, which showed a significant difference (p = 0.001). In the final follow-up, all five patients showed no symptoms of shoulder instability, and there was no pain or limited activity in daily life, thus all patients were satisfied with the results. CONCLUSION Repairing the reverse Hill-Sachs lesion by transferring the partial lesser tuberosity combined with artificial bone fixed by lag screws and sutures can ensure shoulder stability and provide pain relief and good function in patients with locked chronic posterior shoulder dislocation associated with the humeral head defect.
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Affiliation(s)
- Fei Xiong
- grid.263761.70000 0001 0198 0694Department of Orthopaedics, Wuxi 9Th People’s Hospital Affiliated to Soochow University, NO.999 Liangxi Road, Wuxi, China ,grid.263761.70000 0001 0198 0694Orthopaedic Institute, Medical College, Soochow University, NO.178 Ganjiang East Road, Suzhou, China
| | - Qin Yin
- grid.263761.70000 0001 0198 0694Department of Orthopaedics, Wuxi 9Th People’s Hospital Affiliated to Soochow University, NO.999 Liangxi Road, Wuxi, China
| | - Jian Wang
- grid.263761.70000 0001 0198 0694Department of Orthopaedics, Wuxi 9Th People’s Hospital Affiliated to Soochow University, NO.999 Liangxi Road, Wuxi, China
| | - Changbao Wei
- grid.263761.70000 0001 0198 0694Department of Orthopaedics, Wuxi 9Th People’s Hospital Affiliated to Soochow University, NO.999 Liangxi Road, Wuxi, China
| | - Sanjun Gu
- grid.263761.70000 0001 0198 0694Department of Orthopaedics, Wuxi 9Th People’s Hospital Affiliated to Soochow University, NO.999 Liangxi Road, Wuxi, China
| | - Yu Liu
- Department of Orthopaedics, Wuxi 9Th People's Hospital Affiliated to Soochow University, NO.999 Liangxi Road, Wuxi, China.
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26
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Zhang SS, Wu YJ, Pan S, Wang QH, Chen WG, Wang ZF, Xu JY, Zuo J, Yin Q. Xanthones from securidaca inappendiculata antagonizes the anti-rheumatic effect of methotrexate by inhibiting reduced folate carrier 1. Immunopharmacol Immunotoxicol 2023; 45:16-25. [PMID: 35850595 DOI: 10.1080/08923973.2022.2103707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
BACKGROUND The first-line anti-rheumatic drug methotrexate (MTX) is used in the combination. Because of the unpredictable adverse reactions, optimization of relevant regimens is necessary and meaningful. This study aimed to study the possible interaction between Securidaca inappendiculate Hassk. Derived xanthones and MTX. METHODS We established adjuvant-induced arthritis (AIA) model, which was treated with MTX and MTX + xanthone-rich fraction (XRF). The clinical efficacy was evaluated by histopathological examination, and LC-MS was used to monitor the blood concentration of MTX. Western blotting and immunohistochemistry were used to detect protein expression. In vitro, we assessed the activity of related transporters by cellular uptake assay based on HEK-293T cells. RESULTS Compared with MTX-treated rats, inflammation in the immunized rats in the MTX + XRF group was obvious, indicating that XRF antagonized the anti-rheumatic effect of MTX. Meanwhile, XRF reduced liver and kidney injuries caused by MTX in addition to MTX. Results from immunohistochemical and nappendiculat assays suggested that XRF may reduce uptake of MTX by down-regulating reduced folate carrier 1 (RFC1). CONCLUSION This study indicated that XRF could reduce the plasma concentration of MTX by inhibiting the expression of RFC1, antagonize the therapeutic effect of MTX on AIA rats, and reduce its oral bioavailability. The combination of S. inappendiculate and MTX should be further optimized to achieve the goal of increasing efficiency and reducing toxicity.
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Affiliation(s)
- Sa-Sa Zhang
- Department of Pharmacy, The Second Affiliated Hospital of Wannan Medical College, Wuhu, China
| | - Yi-Jin Wu
- Department of Pharmacy, The Second Affiliated Hospital of Wannan Medical College, Wuhu, China.,Department of Traditional Chinese Medicine, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital), Wuhu, China
| | - Shu Pan
- Department of Pharmacy, The Second Affiliated Hospital of Wannan Medical College, Wuhu, China
| | - Qi-Hai Wang
- School of Pharmacy, Anhui College of Traditional Chinese Medicine, Wuhu, Anhui, China
| | - Wen-Gang Chen
- Department of Pharmacy, The Second Affiliated Hospital of Wannan Medical College, Wuhu, China
| | - Zhong-Fang Wang
- Department of Pharmacy, The Second Affiliated Hospital of Wannan Medical College, Wuhu, China
| | - Jin-Ying Xu
- Department of Pharmacy, The Second Affiliated Hospital of Wannan Medical College, Wuhu, China
| | - Jian Zuo
- Department of Traditional Chinese Medicine, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital), Wuhu, China.,Research Center of Integration of Traditional Chinese and Western Medicine, Wannan Medical College, Wuhu, China.,Key Laboratory of Non-coding RNA Transformation Research of Anhui Higher Education Institution, Wannan Medical College, Wuhu, China
| | - Qin Yin
- Department of Pharmacy, The Second Affiliated Hospital of Wannan Medical College, Wuhu, China
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Li N, Zhai K, Yin Q, Gu Q, Zhang X, Melencion MG, Chen Z. Crosstalk between melatonin and reactive oxygen species in fruits and vegetables post-harvest preservation: An update. Front Nutr 2023; 10:1143511. [PMID: 36937352 PMCID: PMC10020600 DOI: 10.3389/fnut.2023.1143511] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 02/16/2023] [Indexed: 03/06/2023] Open
Abstract
Fruits and vegetables contain numerous nutrients, such as vitamins, minerals, phenolic compounds, and dietary fibers. They reduce the incidence of cardiovascular diseases and the risk of certain chronic diseases, and improve the antioxidant and anti-inflammatory capacity. Moreover, melatonin was found in various fruits and vegetables species. Melatonin acts as a multifunctional compound to participate in various physiological processes. In recent years, many advances have been found that melatonin is also appraised as a key modulator on the fruits and vegetables post-harvest preservation. Fruits and vegetables post-harvest usually elicit reactive oxygen species (ROS) generation and accumulation. Excess ROS stimulate cell damage, protein structure destruction, and tissue aging, and thereby reducing their quality. Numerous studies find that exogenous application of melatonin modulates ROS homeostasis by regulating the antioxidant enzymes and non-enzymatic antioxidants systems. Further evidences reveal that melatonin often interacts with hormones and other signaling molecules, such as ROS, nitric oxide (NO), hydrogen sulfide (H2S), and etc. Among these 'new' molecules, crosstalks of melatonin and ROS, especially the H2O2 produced by RBOHs, are provided in fruits and vegetables post-harvest preservation in this review. It will provide reference for complicated integration of both melatonin and ROS as signal molecules in future study.
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Affiliation(s)
- Na Li
- Biology Department, Center for Biodiversity Research and Extension in Mindanao, Central Mindanao University, Musuan, Philippines
- School of Biological and Food Engineering, Suzhou University, Suzhou, China
| | - Kefeng Zhai
- School of Biological and Food Engineering, Suzhou University, Suzhou, China
- Engineering Research Center for Development and High Value Utilization of Genuine Medicinal Materials in North Anhui Province, Suzhou, China
| | - Qin Yin
- Biology Department, Center for Biodiversity Research and Extension in Mindanao, Central Mindanao University, Musuan, Philippines
- School of Biological and Food Engineering, Suzhou University, Suzhou, China
| | - Quan Gu
- School of Biology, Food and Environment, Hefei University, Hefei, China
| | - Xingtao Zhang
- School of Biological and Food Engineering, Suzhou University, Suzhou, China
| | - Merced G. Melencion
- Biology Department, Center for Biodiversity Research and Extension in Mindanao, Central Mindanao University, Musuan, Philippines
- *Correspondence: Merced G. Melencion, ; Ziping Chen,
| | - Ziping Chen
- Anhui Promotion Center for Technology Achievements Transfer, Anhui Academy of Science and Technology, Hefei, China
- *Correspondence: Merced G. Melencion, ; Ziping Chen,
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Luo TT, Wu YJ, Yin Q, Chen WG, Zuo J. The Involvement of Glucose and Lipid Metabolism Alteration in Rheumatoid Arthritis and Its Clinical Implication. J Inflamm Res 2023; 16:1837-1852. [PMID: 37131409 PMCID: PMC10149064 DOI: 10.2147/jir.s398291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 04/19/2023] [Indexed: 05/04/2023] Open
Abstract
Obviously, immune cells like T cells and macrophages play a major role in rheumatoid arthritis (RA). On one hand, the breakdown of immune homeostasis directly induces systemic inflammation; on the other hand, these cells initiate and perpetuate synovitis and tissue damages through the interaction with fibroblast-like synoviocytes (FLS). In recent years, the pathological link between metabolic disorders and immune imbalance has received increasing attention. High energy demand of immune cells leads to the accumulation of metabolic byproducts and inflammatory mediators. They act on various metabolism-sensitive signal pathways as well as relevant transcription factors, such as HIF-1α, and STATs. These molecular events will impact RA-related effectors like circulating immune cells and joint-resident cells in return, allowing the continuous progression of systemic inflammation, arthritic manifestations, and life-threatening complications. In other words, metabolic complications are secondary pathological factors for the progression of RA. Therefore, the status of energy metabolism may be an important indicator to evaluate RA severity, and in-depth explorations of the mechanisms underlying the mystery of how RA-related metabolic disorders develop will provide useful clues to further clarify the etiology of RA, and inspire the discovery of new anti-rheumatic targets. This article reviews the latest research progress on the interactions between immune and metabolism systems in the context of RA. Great importance is attached to the changes in certain pathways controlling both immune and metabolism functions during RA progression.
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Affiliation(s)
- Ting-Ting Luo
- Department of Pharmacy, The Second Affiliated Hospital of Wannan Medical College, Wuhu, 241000, People’s Republic of China
- Xin’an Medical Research Center, The First Affiliated Hospital of Wannan Medical College, Wuhu, 241000, People’s Republic of China
| | - Yi-Jin Wu
- Department of Pharmacy, The Second Affiliated Hospital of Wannan Medical College, Wuhu, 241000, People’s Republic of China
- Xin’an Medical Research Center, The First Affiliated Hospital of Wannan Medical College, Wuhu, 241000, People’s Republic of China
| | - Qin Yin
- Department of Pharmacy, The Second Affiliated Hospital of Wannan Medical College, Wuhu, 241000, People’s Republic of China
| | - Wen-Gang Chen
- Department of Pharmacy, The Second Affiliated Hospital of Wannan Medical College, Wuhu, 241000, People’s Republic of China
| | - Jian Zuo
- Xin’an Medical Research Center, The First Affiliated Hospital of Wannan Medical College, Wuhu, 241000, People’s Republic of China
- Research Center of Integration of Traditional Chinese and Western Medicine, Wannan Medical College, Wuhu, 241000, People’s Republic of China
- Correspondence: Jian Zuo, Email
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Zhang C, Liu Q, Yin Q. HSA-MIR-183-3P TARGETING ATAXIA-TELANGIECTASIA MUTATED PROTEIN REGULATION OF NF-ΚB SIGNALING PATHWAY AFFECTS CELLULAR SENESCENCE CAUSED BY DNA DAMAGE IN LUMBAR DISC DEGENERATION. Acta Endocrinol (Buchar) 2023; 19:10-18. [PMID: 37601718 PMCID: PMC10439315 DOI: 10.4183/aeb.2023.10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
Aims To test the effect of Hsa-miR-183-3p on cell aging and disc degeneration in lumbar intervertebral disc. Methods This study combined clinical research with basic cell experiment, analyzing clinical data from patients with lumbar disc degeneration and traumatic lumbar spine fracture, as well as the differences in baseline data. The degree of lumbar disc injury in patients of different ages was also compared. Differentially expressed miRNAs were predicted via GEO database, and qPCR confirmation was determined by collecting cartilage endplates from two groups. ACAN, Col2A1, p16, p21, and p53 were detected by immunofluorescence, Western blot and qPCR in human nucleus pulposus cells. Changes of cell senescence were detected. The binding of Hsa-miR-183-3p to ataxia-telangiectasia mutated protein was confirmed by dual luciferase reporter assay. Results Degenerative discs showed elevated expression of hsa-miR-183-3p, which may be upregulated by TNF-α via NF-κB signaling pathway and target ataxia-telangiectasia mutated protein regulation. Conclusion Degeneration of the intervertebral disc can be accelerated by TNF-α. Additionally, Hsa-miR-183-3p passed NF-κB signaling pathway is blocked via up-regulation of TNF-α to reduce inflammation via targeting ataxia-telangiectasia mutated protein. As a result, this negative feedback mechanism may assist in maintaining a low degenerative load and preserving chronic disc degeneration.
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Affiliation(s)
- C. Zhang
- Southern Medical University, Guangzhou, Guangdong, China
- Department of Orthopedics, the 927 Hospital of Joint Logistic Support Force, Pu’Er, Yunnan, China
| | - Q. Liu
- Department of Orthopedics, the 927 Hospital of Joint Logistic Support Force, Pu’Er, Yunnan, China
| | - Q. Yin
- Southern Medical University, Guangzhou, Guangdong, China
- Orthopedics Hospital of General Hospital of Guangzhou Military Region of People’s Liberation Army, Guangzhou, Guangdong, China
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Shi Y, Rong N, Zhang X, Yin Q. Synthesis of Chiral Primary Amines via Enantioselective Reductive Amination: from Academy to Industry. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-2002-5733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Chiral primary amines widely exist in drugs and are exceptionally important subunits or synthons toward the syntheses of chiral secondary and tertiary amines of medicinal interest. Metal-catalyzed enantioselective reductive amination (ERA) of ketones with ammonium salts or ammonia provides a direct method for the synthesis of them. Although very useful, progress in this field is very slow and important advance has just been achieved in the last few years. Several major challenges exist in this reaction, including 1) the reversible formation of unstable NH imine intermediates; 2) the strong coordination property of N-containing reagents toward metal species ; 3) the lack of efficient catalytic systems that enable high enantiocontrol. Generally, the efficiency and enantiocontrol of this reaction is dependent on substrate types, for instance, α-keto esters/amides or aryl alkyl ketones have been well established and even used in industrial production of chiral amine drugs. However, highly enantioselective control on dialkyl ketones, cyclic ketones and α-keto acids remains unsolved. Herein, the historical development of ERA reactions with ammonium salts or ammonia gas are summarized, and the novel synthetic applications toward useful synthons or drugs are presented. In addition, the bottlenecks of this method are also discussed in the review.
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Affiliation(s)
- Yongjie Shi
- chemistry, Southern University of Science and Technology, Shenzhen, China
| | - Nianxin Rong
- Faculty of Pharmaceutical Sciences, Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences, Shenzhen, China
| | - Xumu Zhang
- chemistry, Southern University of Science and Technology, Shenzhen, China
| | - Qin Yin
- Faculty of Pharmaceutical Sciences, Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences, Shenzhen, China
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Chen Z, Tu Q, Fang Z, Shen X, Yin Q, Zhang X, Pan M. Molecular Dynamics Studies of the Mechanical Behaviors and Thermal Conductivity of Polyisoprene with Different Degrees of Polymerization. Polymers (Basel) 2022; 14:polym14224950. [PMID: 36433077 PMCID: PMC9698502 DOI: 10.3390/polym14224950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 11/07/2022] [Accepted: 11/14/2022] [Indexed: 11/18/2022] Open
Abstract
Polyisoprene, with a high degree of polymerization, is the main component of natural rubber. In the industrial production process, it is necessary to adjust the length of the macromolecule of polyisoprene to improve its plasticity. It is thus of vital importance to explore the effect of the degree of polymerization of polyisoprene on its properties, e.g., mechanical property and thermal property. Molecular dynamics simulations link microstructure to macroscopic properties. In this paper, Moltemplate was used to establish polyisoprene models with different degrees of polymerization, and the mechanical properties of polyisoprene under uniaxial tension were analyzed under an OPLS all-atom force field. The results showed that the strength and elastic modulus of the material increased with the increase in the degree of polymerization of the molecular chain. In the process of tensile loading, the non-bonded potential energy played a dominant role in the change of the total system potential energy. Then, the thermal conductivity of polyisoprene with different degrees of polymerization was calculated by the non-equilibrium molecular dynamics method (NEMD). The thermal conductivity of PI was predicted to converge to 0.179 W/(m·K). The mechanism of thermal conductivity of the polymer containing branched chains was also discussed and analyzed. The research content of this paper aims to provide theoretical support for improving the mechanical and thermal properties of natural rubber base materials.
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Affiliation(s)
| | | | - Zhonghang Fang
- Correspondence: (Z.F.); (X.S.); Tel.: +86-025-80821451 (X.S.)
| | - Xinmin Shen
- Correspondence: (Z.F.); (X.S.); Tel.: +86-025-80821451 (X.S.)
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Feng M, Du X, Yin Y, Yan L, Wang H, Yin Q, Li L, Fan M, Lai X, Huang Y, Ren J, Lang J. Early Prediction Model of Radiation-Induced Xerostomia Based on Radiomics during Radiotherapy for Nasopharyngeal Carcinoma. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Xu T, Tian J, An L, Jiao Y, Yin Q, Tan Y. Study on the Construction of Dopamine/Poly(ethyleneimine)/Aminoated Carbon Nanotube Multilayer Films on Aramid Fiber Surfaces to Improve the Mechanical Properties of Aramid Fibers/Epoxy Composites. ACS Omega 2022; 7:35610-35625. [PMID: 36249397 PMCID: PMC9558715 DOI: 10.1021/acsomega.2c03390] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 08/31/2022] [Indexed: 06/16/2023]
Abstract
To improve the mechanical properties of aramid fiber (AF) reinforced epoxy resin (EP) composites without damaging the strength of the AF body, in this paper, poly(ethyleneimine) (PEI) and aminoated carbon nanotubes (NH2-CNTs) were successfully deposited on the AF surface layer by layer using poly(dopamine) (PDA) as the initial layer. The modified aramid fibers PDA-AF, PEI-PDA-AF, and NH2-CNTs-PEI-PDA-AF were prepared. The microstructure and chemical composition of the AF surface at different modification stages were systematically characterized. The interfacial properties, mechanical properties, and strengthening mechanism of AF surface-modified composites were studied. The results showed that with the successful deposition of PDA, PEI, and NH2-CNTs layer by layer, the interfacial properties and mechanical properties of the composites gradually improved. Among them, NH2-CNTs-PEI-PDA-AF showed the best strengthening effect. Compared with the unmodified aramid fiber (R-AF), the monofilament tensile strength of NH2-CNTs-PEI-PDA-AF increased by 8.1%, the contact angle with EP decreased by 21.9%, and the interface energy and adhesion energy increased by 115 and 21.4%, respectively. Compared with R-AF/EP, the interlaminar shear strength (ILSS), bending strength, and tensile strength of NH2-CNTs-PEI-PDA-AF/EP were increased by 75, 44.5, and 14.9%, respectively. The significant improvement of the interface properties and mechanical properties between NH2-CNTs-PEI-PDA-AF and EP can be attributed to the introduction of a large number of amino active groups in the NH2-CNTs-PEI-PDA coating layer on the AF surface, which strengthens the chemical-bond cooperation between the AF and EP matrix. At the same time, a large number of NH2-CNTs deposited on the surface effectively increased the surface roughness of AF, improved the mechanical meshing between the AF and EP matrix, and then improved the contact angle, surface energy, and interface bonding strength between the AF and EP matrix. Moreover, a large number of NH2-CNTs on the surface of AF also modified and enhanced the EP in the interface region, which could make the load more effectively transfer from the resin to the fiber, so that AF could carry the load more uniformly, significantly improving the mechanical properties of NH2-CNTs-PEI-PDA-AF/EP.
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Affiliation(s)
- Ting Xu
- College
of Field Engineering, Army Engineering University
of PLA, Nanjing210007, Jiangsu, China
| | - Jin Tian
- College
of Field Engineering, Army Engineering University
of PLA, Nanjing210007, Jiangsu, China
| | - Lizhou An
- College
of Field Engineering, Army Engineering University
of PLA, Nanjing210007, Jiangsu, China
| | - Yumin Jiao
- Unit
94789 of PLA, Nanjing210018, Jiangsu, China
| | - Qin Yin
- College
of Field Engineering, Army Engineering University
of PLA, Nanjing210007, Jiangsu, China
| | - Yefa Tan
- College
of Field Engineering, Army Engineering University
of PLA, Nanjing210007, Jiangsu, China
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Zhang S, Zheng K, Xu G, Liang B, Yin Q. Enhanced removal of tetracycline via advanced oxidation of sodium persulfate and biochar adsorption. Environ Sci Pollut Res Int 2022; 29:72556-72567. [PMID: 35608769 DOI: 10.1007/s11356-022-20817-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 05/10/2022] [Indexed: 06/15/2023]
Abstract
Advanced oxidation of antibiotic tetracycline (TC) is becoming an accessible and efficient technology. The removal of TC from the complex wastewater needs to be lucubrated. In this study, a TC removal system involving degradation and adsorption was established. TC degradation was accomplished by enhanced advanced oxidation via the addition of sodium persulfate (SP) and biochar into simulated wastewater containing Mn2+ and TC wastewater. The adsorption of TC and its derivatives was removed by biochar. The results indicate that the optimized reaction parameters were 3.0 g/L of biochar prepared at 600 °C (B600) and 400 mg/L of SP under acidic condition, and the removal percentage of TC was 87.48%, including 74.23% of degradation and 13.28% of adsorption; the anions Cl-, NO3-, and H2PO4- had negligible effects on the removal of TC in this Mn2+/B600/SP system. The system also functioned well with an aqueous solution with a high chemical oxygen demand (COD) concentration. Electron paramagnetic resonance (EPR) analysis indicated that ·OH and SO4- free radicals were present in the Mn2+/B600/SP system. Based on the testing and analysis results, a removal mechanism and potential TC degradation pathway for this system were proposed. TC can be degraded by ·OH and SO4- via three degradation pathways. Mn2+ can be precipitated as MnO2, and a part of the TC and its derivatives can be adsorbed on the biochar surface. The Mn2+/B600/SP system also performed satisfactorily for a complex aqueous solution with various cations and antibiotics.
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Affiliation(s)
- Shiqiu Zhang
- Institute for Carbon Neutrality, Shandong Normal University, Jinan, 250014, Shandong, China
- College of Geography and Environment, Shandong Normal University, Jinan, 250014, Shandong, China
- National & Local Joint Engineering Research Center of Biomass Resource Utilization, Nankai University, Jinnan District, Tianjin, 300350, China
| | - Kui Zheng
- Analytical and Testing Center, Southwest University of Science and Technology, Mianyang, 621010, Sichuan, China
| | - Geng Xu
- Institute for Carbon Neutrality, Shandong Normal University, Jinan, 250014, Shandong, China
- College of Geography and Environment, Shandong Normal University, Jinan, 250014, Shandong, China
| | - Bolong Liang
- School of Eco-Environment, Hebei University, Baoding, 071002, Hebei, China
| | - Qin Yin
- State Key Laboratory of Environmental Criteria and Risk Assessment, Pollution Control Research Center, Chinese Research Academy of Environmental Science, Beijing, 100012, China.
- College of Water Science, Beijing Normal University, Beijing, 100875, China.
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Yang F, Wang E, Shen X, Zhang X, Yin Q, Wang X, Yang X, Shen C, Peng W. Optimal Design of Acoustic Metamaterial of Multiple Parallel Hexagonal Helmholtz Resonators by Combination of Finite Element Simulation and Cuckoo Search Algorithm. Materials (Basel) 2022; 15:6450. [PMID: 36143762 PMCID: PMC9501345 DOI: 10.3390/ma15186450] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 09/03/2022] [Accepted: 09/13/2022] [Indexed: 06/16/2023]
Abstract
To achieve the broadband sound absorption at low frequencies within a limited space, an optimal design of joint simulation method incorporating the finite element simulation and cuckoo search algorithm was proposed. An acoustic metamaterial of multiple parallel hexagonal Helmholtz resonators with sub-wavelength dimensions was designed and optimized in this research. First, the initial geometric parameters of the investigated acoustic metamaterials were confirmed according to the actual noise reduction requirements to reduce the optimization burden and improve the optimization efficiency. Then, the acoustic metamaterial with the various depths of the necks was optimized by the joint simulation method, which combined the finite element simulation and the cuckoo search algorithm. The experimental sample was prepared using the 3D printer according to the obtained optimal parameters. The simulation results and experimental results exhibited excellent consistency. Compared with the derived sound absorption coefficients by theoretical modeling, those achieved in the finite element simulation were closer to the experimental results, which also verified the accuracy of this optimal design method. The results proved that the optimal design method was applicable to the achievement of broadband sound absorption with different low frequency ranges, which provided a novel method for the development and application of acoustic metamaterials.
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Affiliation(s)
- Fei Yang
- College of Field Engineering, Army Engineering University of PLA, Nanjing 210007, China
| | - Enshuai Wang
- College of Field Engineering, Army Engineering University of PLA, Nanjing 210007, China
| | - Xinmin Shen
- College of Field Engineering, Army Engineering University of PLA, Nanjing 210007, China
| | - Xiaonan Zhang
- College of Field Engineering, Army Engineering University of PLA, Nanjing 210007, China
| | - Qin Yin
- College of Field Engineering, Army Engineering University of PLA, Nanjing 210007, China
| | - Xinqing Wang
- College of Field Engineering, Army Engineering University of PLA, Nanjing 210007, China
| | - Xiaocui Yang
- Engineering Training Center, Nanjing Vocational University of Industry Technology, Nanjing 210023, China
- MIIT Key Laboratory of Multifunctional Lightweight Materials and Structures (MLMS), Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
| | - Cheng Shen
- MIIT Key Laboratory of Multifunctional Lightweight Materials and Structures (MLMS), Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
| | - Wenqiang Peng
- College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China
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Li X, Fang Z, Shen X, Yin Q, Chen Z, Tu Q, Pan M. Study on Increasing the Binding Amount of Rubber and Reinforcing Filler by Adding Aromatic Solvent Oil. Polymers (Basel) 2022; 14:polym14132745. [PMID: 35808790 PMCID: PMC9268855 DOI: 10.3390/polym14132745] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 06/27/2022] [Accepted: 06/28/2022] [Indexed: 02/05/2023] Open
Abstract
The binding amount of rubber and reinforcing filler directly affects the quality of rubber products. The effect of aromatic solvent oil (S-150) on the binding amount of rubber and reinforcing filler was studied. In order to determine the suitability of rubber after adding S-150, the curing characteristics, physical performance and tensile properties of rubber samples were tested and analyzed. Meanwhile, the microstructure of the composite was analyzed by scanning electron microscopy (SEM). The test results showed that the binding amount of rubber and reinforcing filler was increased after adding S-150. The density and Shore A hardness were decreased. When carbon black was 80 phr, after adding 40 phr of S-150, the rebound resilience of rubber increased by 13% on average, and the elongation at break increased by 88% on average. When white carbon black was between 10-70 phr, after adding 65 phr of S-150, the rebound resilience of rubber increased by 9% on average, and the elongation at break increased by 51% on average. Modulus at 100% and tensile strength were decreased. Meanwhile, it could be judged from the microstructure results that the reticulation space inside the rubber was increased, the agglomerate particles were relatively uniform, and no bubbles or holes were observed. The mechanism that S-150 could increase the binding amount of rubber was analyzed according to the like-dissolves-like principle. This research achievement could lead to improvements in the quality of rubber products and promote their practical application.
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Affiliation(s)
| | - Zhonghang Fang
- Correspondence: (Z.F.); (X.S.); Tel.: +86-025-80821451 (X.S.)
| | - Xinmin Shen
- Correspondence: (Z.F.); (X.S.); Tel.: +86-025-80821451 (X.S.)
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Hu L, Wang Y, Xu L, Yin Q, Zhang X. Frontispiece: Highly Enantioselective Synthesis of N‐Unprotected Unnatural α‐Amino Acid Derivatives by Ruthenium‐Catalyzed Direct Asymmetric Reductive Amination. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/anie.202282562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Le'an Hu
- Guangdong Provincial Key Laboratory of Catalysis Department of Chemistry Southern University of Science and Technology Shenzhen Guangdong 518055 P. R. China
- Medi-X Pingshan Southern University of Science and Technology Shenzhen Guangdong 518055 P. R. China
| | - Yuan‐Zheng Wang
- Guangdong Provincial Key Laboratory of Catalysis Department of Chemistry Southern University of Science and Technology Shenzhen Guangdong 518055 P. R. China
- Medi-X Pingshan Southern University of Science and Technology Shenzhen Guangdong 518055 P. R. China
| | - Lei Xu
- Shenzhen Institute of Advanced Technology University of Chinese Academy of Sciences Chinese Academy of Sciences Shenzhen Guangdong 518055 P. R. China
| | - Qin Yin
- Shenzhen Institute of Advanced Technology University of Chinese Academy of Sciences Chinese Academy of Sciences Shenzhen Guangdong 518055 P. R. China
| | - Xumu Zhang
- Guangdong Provincial Key Laboratory of Catalysis Department of Chemistry Southern University of Science and Technology Shenzhen Guangdong 518055 P. R. China
- Medi-X Pingshan Southern University of Science and Technology Shenzhen Guangdong 518055 P. R. China
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Hu L, Wang Y, Xu L, Yin Q, Zhang X. Highly Enantioselective Synthesis of N‐Unprotected Unnatural α‐Amino Acid Derivatives by Ruthenium‐Catalyzed Direct Asymmetric Reductive Amination. Angew Chem Int Ed Engl 2022; 61:e202202552. [DOI: 10.1002/anie.202202552] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Indexed: 12/21/2022]
Affiliation(s)
- Le'an Hu
- Guangdong Provincial Key Laboratory of Catalysis Department of Chemistry Southern University of Science and Technology Shenzhen Guangdong 518055 P. R. China
- Medi-X Pingshan Southern University of Science and Technology Shenzhen Guangdong 518055 P. R. China
| | - Yuan‐Zheng Wang
- Guangdong Provincial Key Laboratory of Catalysis Department of Chemistry Southern University of Science and Technology Shenzhen Guangdong 518055 P. R. China
- Medi-X Pingshan Southern University of Science and Technology Shenzhen Guangdong 518055 P. R. China
| | - Lei Xu
- Shenzhen Institute of Advanced Technology University of Chinese Academy of Sciences Chinese Academy of Sciences Shenzhen Guangdong 518055 P. R. China
| | - Qin Yin
- Shenzhen Institute of Advanced Technology University of Chinese Academy of Sciences Chinese Academy of Sciences Shenzhen Guangdong 518055 P. R. China
| | - Xumu Zhang
- Guangdong Provincial Key Laboratory of Catalysis Department of Chemistry Southern University of Science and Technology Shenzhen Guangdong 518055 P. R. China
- Medi-X Pingshan Southern University of Science and Technology Shenzhen Guangdong 518055 P. R. China
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Hu L, Wang Y, Xu L, Yin Q, Zhang X. Frontispiz: Highly Enantioselective Synthesis of N‐Unprotected Unnatural α‐Amino Acid Derivatives by Ruthenium‐Catalyzed Direct Asymmetric Reductive Amination. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202282562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Le'an Hu
- Guangdong Provincial Key Laboratory of Catalysis Department of Chemistry Southern University of Science and Technology Shenzhen Guangdong 518055 P. R. China
- Medi-X Pingshan Southern University of Science and Technology Shenzhen Guangdong 518055 P. R. China
| | - Yuan‐Zheng Wang
- Guangdong Provincial Key Laboratory of Catalysis Department of Chemistry Southern University of Science and Technology Shenzhen Guangdong 518055 P. R. China
- Medi-X Pingshan Southern University of Science and Technology Shenzhen Guangdong 518055 P. R. China
| | - Lei Xu
- Shenzhen Institute of Advanced Technology University of Chinese Academy of Sciences Chinese Academy of Sciences Shenzhen Guangdong 518055 P. R. China
| | - Qin Yin
- Shenzhen Institute of Advanced Technology University of Chinese Academy of Sciences Chinese Academy of Sciences Shenzhen Guangdong 518055 P. R. China
| | - Xumu Zhang
- Guangdong Provincial Key Laboratory of Catalysis Department of Chemistry Southern University of Science and Technology Shenzhen Guangdong 518055 P. R. China
- Medi-X Pingshan Southern University of Science and Technology Shenzhen Guangdong 518055 P. R. China
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Yin Q, Yan H, Guo X, Liang Y, Wang X, Nian Y, Wang H. Diversity of microbial community structure and their association with phthalic acid esters and physicochemical parameters in informal landfills. Environ Technol 2022; 43:2467-2477. [PMID: 33517864 DOI: 10.1080/09593330.2021.1882585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 01/22/2021] [Indexed: 06/12/2023]
Abstract
Informal landfill is a common waste treatment method employed in rural areas of China, and phthalic acid esters (PAEs) are one of the typical pollutants in landfill leachate. However, there is no corresponding theoretical basis for whether microbial treatment technology can be used to reduce environmental risk of PAEs in informal landfills. Thus, a typical informal landfill site in northern China was selected and approximately 1,133,023 effective sequences were obtained from 21 samples collected from three layers (different deposit depths) of the landfill. This research explored the correlation between PAEs and the composition and distribution of microbial community in specific environments of informal landfill sites. Here we found that dis(2-ethylhexyl) phthalate (DEHP), di-n-octyl phthalate (DOP), and diethyl phthalate (DEP) were positively and significantly correlated with Bhargavaea, Planococcus, Virgibacillus, and Oceanobacillus, respectively. The redundancy analysis demonstrated that moisture content, pH, NO2--N, and SUVA254 among the seven physicochemical factors (pH, TN, NO3--N,NO2--N,NH4+-N, SUVA254, and moisture content) significantly affected bacterial communities. The research conclusion can provide theoretical basis for the degradation technology of PAEs by microorganism and research basis for the treatment of informal landfill sites.
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Affiliation(s)
- Qin Yin
- College of Water Science, Beijing Normal University, Beijing, People's Republic of China
- State key Laboratory of Environmental Criteria and Risk Assessment, Pollution Control Research Center, Chinese Research Academy of Environmental Science, Beijing, People's Republic of China
| | - Haihong Yan
- State key Laboratory of Environmental Criteria and Risk Assessment, Pollution Control Research Center, Chinese Research Academy of Environmental Science, Beijing, People's Republic of China
| | - Xiaoya Guo
- State key Laboratory of Environmental Criteria and Risk Assessment, Pollution Control Research Center, Chinese Research Academy of Environmental Science, Beijing, People's Republic of China
| | - Yu Liang
- State key Laboratory of Environmental Criteria and Risk Assessment, Pollution Control Research Center, Chinese Research Academy of Environmental Science, Beijing, People's Republic of China
| | - Xingzhi Wang
- State key Laboratory of Environmental Criteria and Risk Assessment, Pollution Control Research Center, Chinese Research Academy of Environmental Science, Beijing, People's Republic of China
| | - Yuegang Nian
- State key Laboratory of Environmental Criteria and Risk Assessment, Pollution Control Research Center, Chinese Research Academy of Environmental Science, Beijing, People's Republic of China
| | - Haiyan Wang
- State key Laboratory of Environmental Criteria and Risk Assessment, Pollution Control Research Center, Chinese Research Academy of Environmental Science, Beijing, People's Republic of China
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Wang X, Zhang W, Zhang M, Zhang F, Xiao J, Yin Q, Han H, Li T, Lin G, Zhuge Y. Development of a Drum Tower Severity Scoring (DTSS) system for pyrrolizidine alkaloid-induced hepatic sinusoidal obstruction syndrome. Hepatol Int 2022; 16:669-679. [PMID: 35023026 PMCID: PMC9174127 DOI: 10.1007/s12072-021-10293-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Accepted: 12/21/2021] [Indexed: 01/04/2023]
Abstract
BACKGROUND AND AIMS There has been no reliable severity system based on the prognosis to guide therapeutic strategies for patients with pyrrolizidine alkaloid (PA)-induced hepatic sinusoidal obstruction syndrome (HSOS). We aimed to create a novel Drum Tower Severity Scoring (DTSS) system for these patients to guide therapy. METHODS 172 Patients with PA-HSOS who received supportive care and anticoagulation therapy in Nanjing Drum Tower Hospital from January 2008 to December 2020 were enrolled and analyzed retrospectively. These patients were randomized into a training or validation set in a 3:1 ratio. Next, we established and validated the newly developed DTSS system. RESULTS Analysis identified a predictive formula: logit (P) = 0.004 × aspartate aminotransferase (AST, U/L) + 0.019 × total bilirubin (TB, μmol/L) - 0.571 × fibrinogen (FIB, g/L) - 0.093 × peak portal vein velocity (PVV, cm/s) + 1.122. Next, we quantified the above variables to establish the DTSS system. For the training set, the area under the ROC curve (AUC) (n = 127) was 0.787 [95% confidence interval (CI) 0.706-0.868; p < 0.001]. With a lower cut-off value of 6.5, the sensitivity and negative predictive value for predicting no response to supportive care and anticoagulation therapy were 94.7% and 88.0%, respectively. When applying a high cut-off value of 10.5, the specificity was 92.9% and the positive predictive value was 78.3%. For the validation set, the system performed stable with an AUC of 0.808. CONCLUSIONS The DTSS system can predict the outcome of supportive care and anticoagulation in PA-HSOS patients with satisfactory accuracy by evaluating severity, and may have potential significance for guiding therapy.
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Affiliation(s)
- Xuan Wang
- Department of Gastroenterology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321#, Zhongshan Road, Nanjing, 210008 Jiangsu China
| | - Wei Zhang
- Department of Gastroenterology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321#, Zhongshan Road, Nanjing, 210008 Jiangsu China
| | - Ming Zhang
- Department of Gastroenterology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321#, Zhongshan Road, Nanjing, 210008 Jiangsu China
| | - Feng Zhang
- Department of Gastroenterology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321#, Zhongshan Road, Nanjing, 210008 Jiangsu China
| | - Jiangqiang Xiao
- Department of Gastroenterology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321#, Zhongshan Road, Nanjing, 210008 Jiangsu China
| | - Qin Yin
- Department of Gastroenterology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321#, Zhongshan Road, Nanjing, 210008 Jiangsu China
| | - Hao Han
- Department of Ultrasound, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321#, Zhongshan Road, Nanjing, 210008 Jiangsu China
| | - Taishun Li
- Medical Statistical Analysis Center, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321#, Zhongshan Road, Nanjing, 210008 Jiangsu China
| | - Ge Lin
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, People’s Republic of China
| | - Yuzheng Zhuge
- Department of Gastroenterology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321#, Zhongshan Road, Nanjing, 210008 Jiangsu China
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Duan H, Yang F, Shen X, Yin Q, Wang E, Zhang X, Yang X, Shen C, Peng W. Acoustic Metamaterials for Low-Frequency Noise Reduction Based on Parallel Connection of Multiple Spiral Chambers. Materials 2022; 15:ma15113882. [PMID: 35683180 PMCID: PMC9181907 DOI: 10.3390/ma15113882] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 05/22/2022] [Accepted: 05/23/2022] [Indexed: 02/04/2023]
Abstract
Acoustic metamaterials based on Helmholtz resonance have perfect sound absorption characteristics with the subwavelength size, but the absorption bandwidth is narrow, which limits the practical applications for noise control with broadband. On the basis of the Fabry–Perot resonance principle, a novel sound absorber of the acoustic metamaterial by parallel connection of the multiple spiral chambers (abbreviated as MSC-AM) is proposed and investigated in this research. Through the theoretical modeling, finite element simulation, sample preparation and experimental validation, the effectiveness and practicability of the MSC-AM are verified. Actual sound absorption coefficients of the MSC-AM in the frequency range of 360–680 Hz (with the bandwidth Δf1 = 320 Hz) are larger than 0.8, which exhibit the extraordinarily low-frequency sound absorption performance. Moreover, actual sound absorption coefficients are above 0.5 in the 350–1600 Hz range (with a bandwidth Δf2 = 1250 Hz), which achieve broadband sound absorption in the low–middle frequency range. According to various actual demands, the structural parameters can be adjusted flexibly to realize the customization of sound absorption bandwidth, which provides a novel way to design and improve acoustic metamaterials to reduce the noise with various frequency bands and has promising prospects of application in low-frequency sound absorption.
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Affiliation(s)
- Haiqin Duan
- College of Field Engineering, Army Engineering University of PLA, Nanjing 210007, China; (H.D.); (F.Y.); (E.W.); (X.Z.)
| | - Fei Yang
- College of Field Engineering, Army Engineering University of PLA, Nanjing 210007, China; (H.D.); (F.Y.); (E.W.); (X.Z.)
| | - Xinmin Shen
- College of Field Engineering, Army Engineering University of PLA, Nanjing 210007, China; (H.D.); (F.Y.); (E.W.); (X.Z.)
- Correspondence: (X.S.); (Q.Y.); Tel.: +86-025-8082-1451 (X.S.)
| | - Qin Yin
- College of Field Engineering, Army Engineering University of PLA, Nanjing 210007, China; (H.D.); (F.Y.); (E.W.); (X.Z.)
- Correspondence: (X.S.); (Q.Y.); Tel.: +86-025-8082-1451 (X.S.)
| | - Enshuai Wang
- College of Field Engineering, Army Engineering University of PLA, Nanjing 210007, China; (H.D.); (F.Y.); (E.W.); (X.Z.)
| | - Xiaonan Zhang
- College of Field Engineering, Army Engineering University of PLA, Nanjing 210007, China; (H.D.); (F.Y.); (E.W.); (X.Z.)
| | - Xiaocui Yang
- Engineering Training Center, Nanjing Vocational University of Industry Technology, Nanjing 210023, China;
- MIIT Key Laboratory of Multifunctional Lightweight Materials and Structures (MLMS), Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
| | - Cheng Shen
- MIIT Key Laboratory of Multifunctional Lightweight Materials and Structures (MLMS), Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
| | - Wenqiang Peng
- College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China;
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Yin X, Gu L, Zhang M, Yin Q, Xiao J, Wang Y, Zou X, Zhang F, Zhuge Y. Covered TIPS Procedure-Related Major Complications: Incidence, Management and Outcome From a Single Center. Front Med (Lausanne) 2022; 9:834106. [PMID: 35602500 PMCID: PMC9116508 DOI: 10.3389/fmed.2022.834106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 03/28/2022] [Indexed: 11/17/2022] Open
Abstract
Background and Objective Transjugular intrahepatic portosystemic shunt (TIPS) is a well-established procedure for treating complications of portal hypertension. Due to the complexity of anatomy and difficulty of the puncture technique, the procedure itself might brought potential complications, such as puncture failure, bleeding, infection, and, rarely, death. The aim of this study is to explore the incidence, management, and outcome of TIPS procedure-related major complications using covered stents. Methods Patients who underwent TIPS implantation from January 2015 to December 2020 were recruited retrospectively. Major complications after TIPS were screened and analyzed. Results Nine hundred and forty-eight patients underwent the TIPS procedure with 95.1% (n = 902) technical success in our department. TIPS procedure-related major complications occurred in 30 (3.2%) patients, including hemobilia (n = 13; 1.37%), hemoperitoneum (n = 7; 0.74%), accelerated liver failure (n = 6; 0.63%), and rapidly progressive organ failure (n = 4; 0.42%). Among them, 8 patients died because of hemobilia (n = 1), accelerated liver failure (n = 4), and rapidly progressive organ failure (n = 3). Conclusion The incidence of major complications related to TIPS procedure is relatively low, and some of them could recover through effective medical intervention. In our cohort, the overall incidence is about 3%, which causes 0.84% death. The most fatal complication is organ failure and hemobilia.
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Affiliation(s)
- Xiaochun Yin
- Department of Gastroenterology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Lihong Gu
- Department of Gastroenterology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Ming Zhang
- Department of Gastroenterology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Qin Yin
- Department of Gastroenterology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Jiangqiang Xiao
- Department of Gastroenterology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Yi Wang
- Department of Gastroenterology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Xiaoping Zou
- Department of Gastroenterology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Feng Zhang
- Department of Gastroenterology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Yuzheng Zhuge
- Department of Gastroenterology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
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Wang E, Yang F, Shen X, Duan H, Zhang X, Yin Q, Peng W, Yang X, Yang L. Development and Optimization of Broadband Acoustic Metamaterial Absorber Based on Parallel-Connection Square Helmholtz Resonators. Materials (Basel) 2022; 15:ma15103417. [PMID: 35629445 PMCID: PMC9146988 DOI: 10.3390/ma15103417] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 04/28/2022] [Accepted: 04/29/2022] [Indexed: 11/16/2022]
Abstract
An acoustic metamaterial absorber of parallel-connection square Helmholtz resonators is proposed in this study, and its sound absorption coefficients are optimized to reduce the noise for the given conditions in the factory. A two-dimensional equivalent simulation model is built to obtain the initial value of parameters and a three-dimensional finite element model is constructed to simulate the sound absorption performance of the metamaterial cell, which aims to improve the research efficiency. The optimal parameters of metamaterial cells are obtained through the particle swarm optimization algorithm, and its effectiveness and accuracy are validated through preparing the experimental sample using 3D printing and measuring the sound absorption coefficient by the standing wave tube detection. The consistency between the experimental data and simulation data verifies feasibility of the proposed optimization method and usefulness of the developed acoustic metamaterial absorber, and the desired sound absorption performances for given conditions are achieved. The experimental results prove that parallel-connection square Helmholtz resonators can achieve an adjustable frequency spectrum for the low frequency noise control by parameter optimization, which is propitious to promote its application in reducing the noise in the factory.
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Affiliation(s)
- Enshuai Wang
- College of Field Engineering, Army Engineering University of PLA, Nanjing 210007, China; (E.W.); (F.Y.); (H.D.); (X.Z.); (Q.Y.); (L.Y.)
| | - Fei Yang
- College of Field Engineering, Army Engineering University of PLA, Nanjing 210007, China; (E.W.); (F.Y.); (H.D.); (X.Z.); (Q.Y.); (L.Y.)
| | - Xinmin Shen
- College of Field Engineering, Army Engineering University of PLA, Nanjing 210007, China; (E.W.); (F.Y.); (H.D.); (X.Z.); (Q.Y.); (L.Y.)
- Correspondence: (X.S.); (W.P.); Tel.: +86-025-8082-1451 (X.S.)
| | - Haiqin Duan
- College of Field Engineering, Army Engineering University of PLA, Nanjing 210007, China; (E.W.); (F.Y.); (H.D.); (X.Z.); (Q.Y.); (L.Y.)
| | - Xiaonan Zhang
- College of Field Engineering, Army Engineering University of PLA, Nanjing 210007, China; (E.W.); (F.Y.); (H.D.); (X.Z.); (Q.Y.); (L.Y.)
| | - Qin Yin
- College of Field Engineering, Army Engineering University of PLA, Nanjing 210007, China; (E.W.); (F.Y.); (H.D.); (X.Z.); (Q.Y.); (L.Y.)
| | - Wenqiang Peng
- College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China
- Correspondence: (X.S.); (W.P.); Tel.: +86-025-8082-1451 (X.S.)
| | - Xiaocui Yang
- Engineering Training Center, Nanjing Vocational University of Industry Technology, Nanjing 210023, China;
- MIIT Key Laboratory of Multifunctional Lightweight Materials and Structures (MLMS), Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
| | - Liu Yang
- College of Field Engineering, Army Engineering University of PLA, Nanjing 210007, China; (E.W.); (F.Y.); (H.D.); (X.Z.); (Q.Y.); (L.Y.)
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Zhao N, Yi L, Ren S, Yin Q, Xiang W, Zhang X, Xie B. Algicidal interaction between
Paenibacillus polymyxa
MEZ6
and microalgae. J Appl Microbiol 2022; 133:646-655. [DOI: 10.1111/jam.15592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Revised: 04/12/2022] [Accepted: 04/16/2022] [Indexed: 11/30/2022]
Affiliation(s)
- Na Zhao
- School of Life Sciences, Hubei Key Laboratory of Genetic Regulation and Integrative Biology Central China Normal University Wuhan, 430079 China
| | - Li Yi
- State Key Laboratory of Biocatalysis and Enzyme Engineering School of Life Sciences Hubei University, 430062 China
| | - Sanguo Ren
- School of Life Sciences, Hubei Key Laboratory of Genetic Regulation and Integrative Biology Central China Normal University Wuhan, 430079 China
| | - Qin Yin
- School of Life Sciences, Hubei Key Laboratory of Genetic Regulation and Integrative Biology Central China Normal University Wuhan, 430079 China
| | - Wei Xiang
- School of Basic Medicine Guizhou University of Traditional Chinese Medicine Guizhou, 550025 China
| | - Xu Zhang
- School of Life Sciences, Hubei Key Laboratory of Genetic Regulation and Integrative Biology Central China Normal University Wuhan, 430079 China
| | - Bo Xie
- School of Life Sciences, Hubei Key Laboratory of Genetic Regulation and Integrative Biology Central China Normal University Wuhan, 430079 China
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Chen WG, Zhang SS, Pan S, Wang ZF, Xu JY, Sheng XH, Yin Q, Wu YJ. α-Mangostin Treats Early-Stage Adjuvant-Induced Arthritis of Rat by Regulating the CAP-SIRT1 Pathway in Macrophages. Drug Des Devel Ther 2022; 16:509-520. [PMID: 35250263 PMCID: PMC8893152 DOI: 10.2147/dddt.s348836] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 02/21/2022] [Indexed: 12/11/2022] Open
Abstract
Background Studies have found that α-mangostin (MG) can relieve experimental arthritis by activating cholinergic anti-inflammatory pathway (CAP). It affects the polarization of macrophages and the balance of related immune cell subpopulations, but the specific mechanism is still unclear. It has been found that silent information regulator 1 (SIRT1) is closely related to macrophage activity. The purpose of this study is to explore the mechanism of MG intervening in macrophage polarization during treatment of early adjuvant-induced (AIA) rats through the CAP-SIRT1 pathway. Methods We investigated the polarization of M1 macrophages and the differentiation of Th1 in AIA rats by flow cytometry. Activity of acetylcholinesterase (AChE) and the level of nicotinic adenine dinucleotide (NAD+) in serum were also detected, and immunohistochemical was used to detect the levels of α7 nicotinic cholinergic receptor (α7nAChR) and SIRT1. Then in macrophages, the molecular mechanism of MG regulating the abnormal activation of macrophages in rats with early AIA through the CAP-SIRT1 pathway was studied. Results MG can significantly inhibit the polarization of M1 macrophages and the differentiation of Th1 in AIA rats in the acute phase of inflammation. MG can significantly inhibit the activity of AChE and increase the level of NAD+, thereby further up-regulated the expression levels of α7nAChR and SIRT1. Meanwhile, MG inhibited nuclear factor-κB (NF-κB)-mediated inflammation by activating the CAP-SIRT1 pathway in macrophages. Conclusion In summary, the stimulation of MG induced CAP activation, which up-regulated SIRT1 signal, and thereby inhibited M1 polarization through the NF-κB pathway, and improved the pathological immune environment of early-stage AIA rats.
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Affiliation(s)
- Wen-Gang Chen
- Department of Pharmacy, The Second Affiliated Hospital of Wannan Medical College, Wuhu, 241000, Anhui, People's Republic of China
| | - Sa-Sa Zhang
- Department of Pharmacy, The Second Affiliated Hospital of Wannan Medical College, Wuhu, 241000, Anhui, People's Republic of China.,Graduate School, Wannan Medical College, Wuhu, 241000, Anhui, People's Republic of China.,Xin'An Medicine Research Center, Wannan Medical College, Wuhu, 241000, Anhui, People's Republic of China
| | - Shu Pan
- Department of Pharmacy, The Second Affiliated Hospital of Wannan Medical College, Wuhu, 241000, Anhui, People's Republic of China.,Graduate School, Wannan Medical College, Wuhu, 241000, Anhui, People's Republic of China.,Xin'An Medicine Research Center, Wannan Medical College, Wuhu, 241000, Anhui, People's Republic of China
| | - Zhong-Fang Wang
- Department of Pharmacy, The Second Affiliated Hospital of Wannan Medical College, Wuhu, 241000, Anhui, People's Republic of China
| | - Jin-Ying Xu
- Department of Pharmacy, The Second Affiliated Hospital of Wannan Medical College, Wuhu, 241000, Anhui, People's Republic of China
| | - Xue-He Sheng
- Department of Pharmacy, The Second Affiliated Hospital of Wannan Medical College, Wuhu, 241000, Anhui, People's Republic of China
| | - Qin Yin
- Department of Pharmacy, The Second Affiliated Hospital of Wannan Medical College, Wuhu, 241000, Anhui, People's Republic of China.,Graduate School, Wannan Medical College, Wuhu, 241000, Anhui, People's Republic of China
| | - Yi-Jin Wu
- Department of Pharmacy, The Second Affiliated Hospital of Wannan Medical College, Wuhu, 241000, Anhui, People's Republic of China.,Xin'An Medicine Research Center, Wannan Medical College, Wuhu, 241000, Anhui, People's Republic of China
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Yin Q, Si G, Li J, Wali S, Ren J, Guo J, Zhang H. Self-powered topological insulator Bi 2Te 3/Ge heterojunction photodetector driven by long-lived excitons transfer. Nanotechnology 2022; 33:255502. [PMID: 35290961 DOI: 10.1088/1361-6528/ac5df7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 03/15/2022] [Indexed: 06/14/2023]
Abstract
Due to the wide spectral absorption and ultrafast electron dynamical response under optical excitation, topological insulator (TI) was proposed to have appealing application in next-generation photonic and optoelectronic devices. Whereas, the bandgap-free speciality of Dirac surface states usually leads to a quick relaxation of photoexcited carriers, making the transient excitons difficult to manipulate in isolated TIs. Growth of TI Bi2Te3/Ge heterostructures can promote the specific lifetime and quantity of long-lived excitons, offering the possibility of designing original near-infrared optoelectronic devices, however, the construction of TI Bi2Te3/Ge heterostructures has yet to be investigated. Herein, the high-quality Bi2Te3/Ge heterojunction with clear interface was prepared by physical vapor deposition strategy. A significant photoluminescence quenching behaviour was observed by experiments, which was attributed to the spontaneous excitation transfer of electrons at heterointerface via theoretical analysis. Then, a self-powered heterostructure photodetector was fabricated, which demonstrated a maximal detectivity of 1.3 × 1011Jones, an optical responsivity of 0.97 A W-1, and ultrafast photoresponse speed (12.1μs) under 1064 nm light illumination. This study offers a fundamental understanding of the spontaneous interfacial exciton transfer of TI-based heterostructures, and the as-fabricated photodetectors with excellent performance provided an important step to meet the increasing demand for novel optoelectronic applications in the future.
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Affiliation(s)
- Qin Yin
- School of Physics and Electronics, Shandong Normal University, Jinan, Shandong 250014, People's Republic of China
| | - Guoxiang Si
- School of Physics and Electronics, Shandong Normal University, Jinan, Shandong 250014, People's Republic of China
| | - Jiao Li
- School of Physics and Electronics, Shandong Normal University, Jinan, Shandong 250014, People's Republic of China
| | - Sartaj Wali
- School of Physics and Electronics, Shandong Normal University, Jinan, Shandong 250014, People's Republic of China
| | - Junfeng Ren
- School of Physics and Electronics, Shandong Normal University, Jinan, Shandong 250014, People's Republic of China
| | - Jiatian Guo
- School of Physics and Electronics, Shandong Normal University, Jinan, Shandong 250014, People's Republic of China
| | - Hongbin Zhang
- School of Physics and Electronics, Shandong Normal University, Jinan, Shandong 250014, People's Republic of China
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Hu L, Wang YZ, Xu L, Yin Q, Zhang X. Highly Enantioselective Synthesis of N‐Unprotected Unnatural α‐Amino Acid Derivatives by Ruthenium‐Catalyzed Direct Asymmetric Reductive Amination. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Le’an Hu
- Southern University of Science and Technology Chemistry CHINA
| | - Yuan-Zheng Wang
- Southern University of Science and Technology Chemistry CHINA
| | - Lei Xu
- Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Faculty of Pharmaceutical Sciences CHINA
| | - Qin Yin
- Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Faculty of Pharmaceutical Sciences CHINA
| | - Xumu Zhang
- Southern University of Science and Technology Chemistry 1088 Xueyuan Avenue 518055 Shenzhen CHINA
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Johnson EL, Yin Q, O'Hara NB, Tang L, Jeong JW, Asano E, Ofen N. Dissociable oscillatory theta signatures of memory formation in the developing brain. Curr Biol 2022; 32:1457-1469.e4. [PMID: 35172128 PMCID: PMC9007830 DOI: 10.1016/j.cub.2022.01.053] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 12/15/2021] [Accepted: 01/19/2022] [Indexed: 11/16/2022]
Abstract
Understanding complex human brain functions is critically informed by studying such functions during development. Here, we addressed a major gap in models of human memory by leveraging rare direct electrophysiological recordings from children and adolescents. Specifically, memory relies on interactions between the medial temporal lobe (MTL) and prefrontal cortex (PFC), and the maturation of these interactions is posited to play a key role in supporting memory development. To understand the nature of MTL-PFC interactions, we examined subdural recordings from MTL and PFC in 21 neurosurgical patients aged 5.9-20.5 years as they performed an established scene memory task. We determined signatures of memory formation by comparing the study of subsequently recognized to forgotten scenes in single trials. Results establish that MTL and PFC interact via two distinct theta mechanisms, an ∼3-Hz oscillation that supports amplitude coupling and slows down with age and an ∼7-Hz oscillation that supports phase coupling and speeds up with age. Slow and fast theta interactions immediately preceding scene onset further explained age-related differences in recognition performance. Last, with additional diffusion imaging data, we linked both functional mechanisms to the structural maturation of the cingulum tract. Our findings establish system-level dynamics of memory formation and suggest that MTL and PFC interact via increasingly dissociable mechanisms as memory improves across development.
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Affiliation(s)
- Elizabeth L Johnson
- Life-Span Cognitive Neuroscience Program, Institute of Gerontology and Merrill Palmer Skillman Institute, Wayne State University, Detroit, MI 48202, USA; Departments of Medical Social Sciences and Pediatrics, Northwestern University, Chicago, IL 60611, USA; Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA 94720, USA.
| | - Qin Yin
- Life-Span Cognitive Neuroscience Program, Institute of Gerontology and Merrill Palmer Skillman Institute, Wayne State University, Detroit, MI 48202, USA; Department of Psychology, Wayne State University, Detroit, MI 48202, USA
| | - Nolan B O'Hara
- Translational Neuroscience Program, Wayne State University, Detroit, MI 48201, USA
| | - Lingfei Tang
- Life-Span Cognitive Neuroscience Program, Institute of Gerontology and Merrill Palmer Skillman Institute, Wayne State University, Detroit, MI 48202, USA; Department of Psychology, Wayne State University, Detroit, MI 48202, USA
| | - Jeong-Won Jeong
- Translational Neuroscience Program, Wayne State University, Detroit, MI 48201, USA; Departments of Pediatrics and Neurology, Children's Hospital of Michigan, Wayne State University, Detroit, MI 48201, USA
| | - Eishi Asano
- Translational Neuroscience Program, Wayne State University, Detroit, MI 48201, USA; Departments of Pediatrics and Neurology, Children's Hospital of Michigan, Wayne State University, Detroit, MI 48201, USA
| | - Noa Ofen
- Life-Span Cognitive Neuroscience Program, Institute of Gerontology and Merrill Palmer Skillman Institute, Wayne State University, Detroit, MI 48202, USA; Department of Psychology, Wayne State University, Detroit, MI 48202, USA; Translational Neuroscience Program, Wayne State University, Detroit, MI 48201, USA.
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50
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Zhao X, Shi J, Yin Q, Dong Z, Zhang Y, Kang L, Yu Q, Chen C, Li J, Liu X, Zhang K. Controllable synthesis of high-quality two-dimensional tellurium by a facile chemical vapor transport strategy. iScience 2022; 25:103594. [PMID: 35005543 PMCID: PMC8718972 DOI: 10.1016/j.isci.2021.103594] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 11/10/2021] [Accepted: 12/03/2021] [Indexed: 11/25/2022] Open
Abstract
Recently, as an elementary material, tellurium (Te) has received widespread attention for its high carrier mobility, intriguing topological properties, and excellent environmental stability. However, it is difficult to obtain two-dimensional (2D) Te with high crystalline quality owing to its intrinsic helical chain structure. Herein, a facile strategy for controllable synthesis of high-quality 2D Te nanoflakes through chemical vapor transport in one step is reported. With carefully tuning the growth kinetics determined mainly by temperature, tellurium nanoflakes in lateral size of up to ∼40 μm with high crystallinity can be achieved. We also investigated the second harmonic generation of Te nanoflakes, which demonstrates that it can be used as frequency doubling crystals and has potential applications in nonlinear optical devices. In addition, field effect transistor devices based on the 2D Te nanoflakes were fabricated and exhibited excellent electrical properties with high mobility of 379 cm2 V−1 s−1. High-quality 2D Te nanoflakes were directly synthesized by CVT method The growth mechanisms of 2D Te nanoflakes were systematically studied 2D Te nanoflakes have potential applications in nonlinear optical devices 2D Te nanoflakes-based FETs exhibit high mobility of ∼379 cm2 V−1 s−1
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Affiliation(s)
- Xinxin Zhao
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei 230026, China
- CAS Key Laboratory of Nanophotonic Materials and Devices and Key Laboratory of Nanodevices and Applications, i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou 215123, China
| | - Jianwei Shi
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
| | - Qin Yin
- CAS Key Laboratory of Nanophotonic Materials and Devices and Key Laboratory of Nanodevices and Applications, i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou 215123, China
| | - Zhuo Dong
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei 230026, China
- CAS Key Laboratory of Nanophotonic Materials and Devices and Key Laboratory of Nanodevices and Applications, i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou 215123, China
| | - Yan Zhang
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei 230026, China
- CAS Key Laboratory of Nanophotonic Materials and Devices and Key Laboratory of Nanodevices and Applications, i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou 215123, China
| | - Lixing Kang
- Division of Advanced Materials, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou 215123, China
| | - Qiang Yu
- CAS Key Laboratory of Nanophotonic Materials and Devices and Key Laboratory of Nanodevices and Applications, i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou 215123, China
| | - Cheng Chen
- School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei 230026, China
- CAS Key Laboratory of Nanophotonic Materials and Devices and Key Laboratory of Nanodevices and Applications, i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou 215123, China
| | - Jie Li
- CAS Key Laboratory of Nanophotonic Materials and Devices and Key Laboratory of Nanodevices and Applications, i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou 215123, China
- Corresponding author
| | - Xinfeng Liu
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
- Corresponding author
| | - Kai Zhang
- CAS Key Laboratory of Nanophotonic Materials and Devices and Key Laboratory of Nanodevices and Applications, i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou 215123, China
- Corresponding author
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