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Cao LL, Yan JG, Feng DN, Dong Y, Xu ZQ, Wang FC, Gao YJ, Zhu SS, Zhang M. [Analysis of clinical characteristic of children with progressive familial intrahepatic cholestasis type 3]. Zhonghua Er Ke Za Zhi 2024; 62:462-466. [PMID: 38623015 DOI: 10.3760/cma.j.cn112140-20231010-00270] [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] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
Objective: To analyze the clinical manifestations, pathology, and gene variant characteristics in children with progressive familial intrahepatic cholestasis type 3 (PFIC3). Methods: This retrospective study assessed the clinical manifestations, pathological features, gene variants, and prognosis data of 11 children with PFIC3 hospitalized in the Department of Hepatology, Fifth Medical Center, PLA General Hospital, from January 2015 to December 2022. Panel or whole exome sequencing was performed on the probands, followed by Sanger sequencing for verification within the family. Detected pathogenic variants were compared with known disease databases. Additionally, the new variants were predicted the deleteriousness and protein structure using relevant software to evaluate their pathogenicity. Results: Among the 11 PFIC3 children, 8 were boys and 3 were girls. The age of onset was 3.1 (0.2, 15.6) years. The main complaint of onset was different in the 11 patients;5 of them were abnormal liver function, 3 of them were liver and spleen enlargement, 2 of them were abdominal distension, and 1 of them was jaundice. Alanine aminotransferase, asparate aminotransferase and γ-glutamyltransferase increased in all the patients, which were(113±40), (150±44) and (270±156) U/L respectively. Moreover, direct bilirubin increased in 9 patients, and cholestasis was showed in 8 patients. All patients showed liver fibrosis on imaging, and 8 patients had cirrhosis. The pathological features of 8 cases by liver biopsy were as follows: 8 cases of fibrosis in the portal area, 7 cases of small bile duct hyperplasia, 4 cases of positive copper staining, and 5 cases of cirrhosis. A total of 17 ABCB4 gene variants were detected, including 9 new variants: c.589C>T(p.Q197X), c.1230+1G>A(Splicing), c.2914G>A(P.D972N), c.1058G>A(p.C353Y), c.956G>T(p.G319V), c.473T>A(p.L158Q), c.164T>C(p.L55S), c.2493G>C(p.R831S), and c.1150G>C(p.G384R). All 11 patients were treated with ursodeoxycholic acid and followed up for 5.1(0.6, 7.4) years. Among them, 4 cases of cirrhosis progressed continuously, 3 cases had liver transplantations, and the remaining 4 cases were stable after medical treatment. Conclusions: Children with PFIC3 have early onset, diverse clinical manifestations, rapid progression of fibrotic and cholestasis, as well as poor prognosis. Genetic testing helps to confirm the diagnosis.
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Affiliation(s)
- L L Cao
- Department of Hepatology, Senior Department of Hepatology, Fifth Medical Center, PLA General Hospital, Beijing 100039, China
| | - J G Yan
- Department of Hepatology, Senior Department of Hepatology, Fifth Medical Center, PLA General Hospital, Beijing 100039, China
| | - D N Feng
- Department of Hepatology, Senior Department of Hepatology, Fifth Medical Center, PLA General Hospital, Beijing 100039, China
| | - Y Dong
- Department of Hepatology, Senior Department of Hepatology, Fifth Medical Center, PLA General Hospital, Beijing 100039, China
| | - Z Q Xu
- Department of Hepatology, Senior Department of Hepatology, Fifth Medical Center, PLA General Hospital, Beijing 100039, China
| | - F C Wang
- Department of Hepatology, Senior Department of Hepatology, Fifth Medical Center, PLA General Hospital, Beijing 100039, China
| | - Y J Gao
- Department of Hepatology, Senior Department of Hepatology, Fifth Medical Center, PLA General Hospital, Beijing 100039, China
| | - S S Zhu
- Department of Hepatology, Senior Department of Hepatology, Fifth Medical Center, PLA General Hospital, Beijing 100039, China
| | - M Zhang
- Department of Hepatology, Senior Department of Hepatology, Fifth Medical Center, PLA General Hospital, Beijing 100039, China
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Song LB, Zhang L, Zhu Y, Yang YS, Xu ZQ, Sun JL, Wei JF. Identification of fructose-bisphosphate aldolase as new pollen allergens. Allergy 2024; 79:1368-1372. [PMID: 38375932 DOI: 10.1111/all.16058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 01/18/2024] [Accepted: 02/05/2024] [Indexed: 02/21/2024]
Affiliation(s)
- Le-Bin Song
- Department of Pharmacy, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
- Department of Dermatology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Li Zhang
- Division of Respiratory and Critical Care Medicine, Respiratory Infection and Intervention Laboratory of Frontiers Science Center for Disease-related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu, China
| | - Ying Zhu
- Department of Blood Transfusion, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Yong-Shi Yang
- Department of Allergy, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Zhi-Qiang Xu
- Department of Pharmacy, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Jin-Lyu Sun
- Department of Allergy, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Ji-Fu Wei
- Department of Pharmacy, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
- Department of Pharmacy, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
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Zhao ST, Qiu ZC, Zeng RY, Zou HX, Qiu RB, Peng HZ, Zhou LF, Xu ZQ, Lai SQ, Wan L. Exploring the molecular biology of ischemic cardiomyopathy based on ferroptosis‑related genes. Exp Ther Med 2024; 27:221. [PMID: 38590563 PMCID: PMC11000445 DOI: 10.3892/etm.2024.12509] [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: 10/05/2023] [Accepted: 02/21/2024] [Indexed: 04/10/2024] Open
Abstract
Ischemic cardiomyopathy (ICM) is a serious cardiac disease with a very high mortality rate worldwide, which causes myocardial ischemia and hypoxia as the main damage. Further understanding of the underlying pathological processes of cardiomyocyte injury is key to the development of cardioprotective strategies. Ferroptosis is an iron-dependent form of regulated cell death characterized by the accumulation of lipid hydroperoxides to lethal levels, resulting in oxidative damage to the cell membrane. The current understanding of the role and regulation of ferroptosis in ICM is still limited, especially in the absence of evidence from large-scale transcriptomic data. Through comprehensive bioinformatics analysis of human ICM transcriptome data obtained from the Gene Expression Omnibus database, the present study identified differentially expressed ferroptosis-related genes (DEFRGs) in ICM. Subsequently, their potential biological mechanisms and cross-talk were analyzed, and hub genes were identified by constructing protein-protein interaction networks. Ferroptosis features such as reactive oxygen species generation, changes in ferroptosis marker proteins, iron ion aggregation and lipid oxidation, were identified in the H9c2 anoxic reoxygenation injury model. Finally, the diagnostic ability of Gap junction alpha-1 (GJA1), Solute carrier family 40 member 1 (SLC40A1), Alpha-synuclein (SNCA) were identified through receiver operating characteristic curves and the expression of DEFRGs was verified in an in vitro model. Furthermore, potential drugs (retinoic acid) that could regulate ICM ferroptosis were predicted based on key DEFRGs. The present article presents new insights into the role of ferroptosis in ICM, investigating the regulatory role of ferroptosis in the pathological process of ICM and advocating for ferroptosis as a potential novel therapeutic target for ICM based on evidence from the ICM transcriptome.
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Affiliation(s)
- Shi-Tao Zhao
- Department of Cardiovascular Surgery, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
- Institute of Cardiovascular Surgical Diseases, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Zhi-Cong Qiu
- Department of Cardiovascular Surgery, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
- Institute of Cardiovascular Surgical Diseases, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Rui-Yuan Zeng
- Department of Cardiovascular Surgery, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
- Institute of Cardiovascular Surgical Diseases, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Hua-Xi Zou
- Department of Cardiovascular Surgery, The Second Affiliated Hospita, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330200, P.R. China
| | - Rong-Bin Qiu
- Department of Cardiovascular Surgery, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
- Institute of Cardiovascular Surgical Diseases, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Han-Zhi Peng
- Department of Cardiovascular Surgery, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
- Institute of Cardiovascular Surgical Diseases, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Lian-Fen Zhou
- Department of Cardiovascular Surgery, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
- Institute of Cardiovascular Surgical Diseases, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Zhi-Qiang Xu
- Department of Cardiovascular Surgery, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
- Institute of Cardiovascular Surgical Diseases, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Song-Qing Lai
- Department of Cardiovascular Surgery, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
- Institute of Cardiovascular Surgical Diseases, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Li Wan
- Department of Cardiovascular Surgery, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
- Institute of Cardiovascular Surgical Diseases, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
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Qin QZ, Tang J, Wang CY, Xu ZQ, Tian M. Construction by artificial intelligence and immunovalidation of hypoallergenic mite allergen Der f 36 vaccine. Front Immunol 2024; 15:1325998. [PMID: 38601166 PMCID: PMC11004385 DOI: 10.3389/fimmu.2024.1325998] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Accepted: 03/12/2024] [Indexed: 04/12/2024] Open
Abstract
Background The house dust mite (HDM) is widely recognized as the most prevalent allergen in allergic diseases. Allergen-specific immunotherapy (AIT) has been successfully implemented in clinical treatment for HDM. Hypoallergenic B-cell epitope-based vaccine designed by artificial intelligence (AI) represents a significant progression of recombinant hypoallergenic allergen derivatives. Method The three-dimensional protein structure of Der f 36 was constructed using Alphafold2. AI-based tools were employed to predict B-cell epitopes, which were subsequently verified through IgE-reaction testing. Hypoallergenic Der f 36 was then synthesized, expressed, and purified. The reduced allergenicity was assessed by enzyme-linked immunosorbent assay (ELISA), immunoblotting, and basophil activation test. T-cell response to hypoallergenic Der f 36 and Der f 36 was evaluated based on cytokine expression in the peripheral blood mononuclear cells (PBMCs) of patients. The immunogenicity was evaluated and compared through rabbit immunization with hypoallergenic Der f 36 and Der f 36, respectively. The inhibitory effect of the blocking IgG antibody on the specific IgE-binding activity and basophil activation of Der f 36 allergen was also examined. Results The final selected non-allergic B-cell epitopes were 25-48, 57-67, 107-112, 142-151, and 176-184. Hypoallergenic Der f 36 showed significant reduction in IgE-binding activity. The competitive inhibition of IgE-binding to Der f 36 was investigated using the hypoallergenic Der f 36, and only 20% inhibition could be achieved, which is greatly reduced when compared with inhibition by Der f 36 (98%). The hypoallergenic Der f 36 exhibited a low basophil-stimulating ratio similar to that of the negative control, and it could induce an increasing level of IFN-γ but not Th2 cytokines IL-5 and IL-13 in PBMCs. The vaccine-specific rabbit blocking IgG antibodies could inhibit the patients' IgE binding and basophil stimulation activity of Derf 36. Conclusion This study represents the first application of an AI strategy to facilitate the development of a B-cell epitope-based hypoallergenic Der f 36 vaccine, which may become a promising immunotherapy for HDM-allergic patients due to its reduced allergenicity and its high immunogenicity in inducing blocking of IgG.
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Affiliation(s)
- Qiao-Zhi Qin
- Department of Respiratory Medicine, Children’s Hospital of Nanjing Medical University, Nanjing, China
- Pediatric Department, Northern Jiangsu People’s Hospital, Yangzhou, China
| | - Jian Tang
- Department of Pharmacy, The Affiliated Cancer Hospital of Nanjing Medical University and Jiangsu Cancer Hospital and Jiangsu Institute of Cancer Research, Nanjing, China
| | - Cai-Yun Wang
- Department of Respiratory Medicine, Children’s Hospital of Nanjing Medical University, Nanjing, China
| | - Zhi-Qiang Xu
- Research Division of Clinical Pharmacology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
- National Vaccine Innovation Platform, Nanjing Medical University, Nanjing, China
| | - Man Tian
- Department of Respiratory Medicine, Children’s Hospital of Nanjing Medical University, Nanjing, China
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Yu T, Zhang C, Xing J, Zhang T, Xu Z, Di Y, Yang S, Jiang R, Tang J, Zhuang X, Jin N, Tian M. Ferritin-binding and ubiquitination-modified mRNA vaccines induce potent immune responses and protective efficacy against SARS-CoV-2. Int Immunopharmacol 2024; 129:111630. [PMID: 38320355 DOI: 10.1016/j.intimp.2024.111630] [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: 12/14/2023] [Revised: 01/30/2024] [Accepted: 01/30/2024] [Indexed: 02/08/2024]
Abstract
Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) incessantly engenders mutating strains via immune escape mechanisms, substantially escalating the risk of severe acute respiratory syndrome. In this context, the urgent development of innovative and efficacious mRNA vaccines is imperative. In our study, we synthesized six unique mRNA vaccine formulations: the Receptor Binding Domain (RBD) monomer vaccine, RBD dimer (2RBD) vaccine, RBD-Ferritin (RBD-Fe) vaccine, ubiquitin-modified wild-type Nucleocapsid gene (WT-N) vaccine, rearranged Nucleocapsid gene (Re-N) vaccine, and an epitope-based (COVID-19 epitope) vaccine, all encapsulated within the lipid nanoparticle SM102. Immunization studies conducted on C57BL/6 mice with these vaccines revealed that the RBD monomer, RBD dimer (2RBD), and RBD-Fe vaccines elicited robust titers of specific antibodies, including neutralizing antibodies. In contrast, the wild-type N gene (WT-N), rearrange N gene (Re-N), and COVID-19 epitope vaccines predominantly induced potent cellular immune responses. Protective efficacy assays in golden hamsters demonstrated that vaccinated cohorts showed significant reduction in lung pathology, markedly lower viral loads in the lungs, nasal turbinates, and trachea, and substantially reduced transcriptional and expression levels of pro-inflammatory cytokines. Overall, our vaccine candidates pave the way for novel strategies in vaccine development against various infectious agents and establish a critical foundation for the formulation of advanced vaccines targeting emerging pathogens.
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Affiliation(s)
- Tong Yu
- College of Veterinary Medicine, Jilin Agricultural University, Changchun, China; Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China
| | - ChenChao Zhang
- College of Agriculture, Yanbian University, Yanji, China
| | - JunHong Xing
- College of Veterinary Medicine, Jilin Agricultural University, Changchun, China
| | - Tong Zhang
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - ZhiQiang Xu
- College of Agriculture, Yanbian University, Yanji, China
| | - YaXin Di
- College of Veterinary Medicine, Northeast Agricultural University, Nanning, China
| | - SongHui Yang
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China
| | - RenYue Jiang
- College of Agriculture, Yanbian University, Yanji, China
| | - JiaFeng Tang
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - XinYu Zhuang
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China.
| | - NingYi Jin
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China.
| | - MingYao Tian
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China.
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Zheng W, Xu YF, Hu ZM, Li K, Xu ZQ, Sun JL, Wei JF. Artificial intelligence-driven design of the assembled major cat allergen Fel d 1 to improve its spatial folding and IgE-reactivity. Int Immunopharmacol 2024; 128:111488. [PMID: 38185034 DOI: 10.1016/j.intimp.2024.111488] [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: 10/16/2023] [Revised: 12/31/2023] [Accepted: 01/02/2024] [Indexed: 01/09/2024]
Abstract
BACKGROUND Cat-derived allergens are considered as one of the most common causes of allergic diseases worldwide. Fel d 1 is a major cat allergen and plays an important role in immunoglobulin E (IgE)-reaction diagnosis. However, the two separate chains of Fel d 1 exhibited lower IgE-reactivity than its complete molecule of an assembled form, which makes it difficult to efficiently prepare and limits the application of Fel d 1 in molecular diagnosis of cat allergy. METHODS We first applied artificial intelligence (AI) based tool AlphaFold2 to build the 3-dimensional structures of Fel d 1 with different connection modes between two chains, which were evaluated by ERRAT program and were expressed in Escherichia coli. We then calculated the expression ratios of soluble form/inclusion bodies form of optimized Fel d 1. The Circular Dichroism (CD), High Performance Liquid Chromatography-Size Exclusion Chromatography (HPLC-SEC) and reducing/non-reducing SDS-PAGE were performed to characterize the folding status and dimerization of the optimized fusion Fel d 1. The improvement of specific-IgE reactivity to optimized fusion Fel d 1 was investigated by enzyme linked immunosorbent assay (ELISA). RESULTS Among several linkers, 2 × GGGGS got the highest scores, with an overall quality factor of 100. The error value of the residues around the junction of 2 × GGGGS was lower than others. It exhibited highest proportion of soluble protein than other Fel d 1 constructs with ERRAT (GGGGS, KK as well as direct fusion Fel d 1). The results of CD and HPLC-SEC showed the consistent folding and dimerization of two fused subunits between the optimized fusion Fel d 1 and previously well-defined direct fusion Fel d 1. The overall IgE-binding absorbance of optimized fusion Fel d 1 tested by ELISA was improved compared with that of the direct fusion Fel d 1. CONCLUSION We firstly provided an AI-design strategy to optimize the Fel d 1, which could spontaneously fold into its native-like structure without additional refolding process or eukaryotic folding factors. The improved IgE-binding activity and simplified preparation method could greatly facilitate it to be a robust allergen material for molecular diagnosis of cat allergy.
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Affiliation(s)
- Wei Zheng
- Department of Pharmacy, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
| | - Yi-Fei Xu
- Department of Pharmacy, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
| | - Zhi-Ming Hu
- Department of Pharmacy, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
| | - Ke Li
- Department of Pharmacy, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
| | - Zhi-Qiang Xu
- Research Division of Clinical Pharmacology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China; National Vaccine Innovation Platform, Nanjing Medical University, Nanjing 211166, China.
| | - Jin-Lyu Sun
- Department of Allergy, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China.
| | - Ji-Fu Wei
- Department of Pharmacy, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China; Research Division of Clinical Pharmacology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China; National Vaccine Innovation Platform, Nanjing Medical University, Nanjing 211166, China.
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Xu ZQ, He YQ, Huang JH, Qiu ZW, Zeng XX. [Fabrication and evaluation of composite hydroxyapatite coating on ordered micro-/nanotextured titanium surface]. Zhonghua Kou Qiang Yi Xue Za Zhi 2024; 59:165-172. [PMID: 38280736 DOI: 10.3760/cma.j.cn112144-20230926-00170] [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] [Subscribe] [Scholar Register] [Indexed: 01/29/2024]
Abstract
Objective: To develope a titanium specimen with good osteogenic activity through fabrication of a composite hydroxyapatite coating on ordered micro-/nanotextured titanium surface. Methods: An ordered micro-/nanotextured structure was prepared on the surface of titanium (the control), and then hydroxyapatite was deposited on the as-prepared ordered micro-/nanotextured structure by alternative loop immersion method. The ordered micro-/nanotextured structures before and after hydroxyapatite deposition were denoted as HA and MN, respectively. Surface morphology was observed using a scanning electron microscope. Bone marrow mesenchymal stem cells (BMMSC) were seeded on the surface of three different materials. Cell morphology was observed with a scanning electron microscope. Cell adhesion and cell proliferation were evaluated using 4', 6-diamidino-2-phenylindole staining and cell counting kit-8 assay, respectively. Extracellular matrix mineralization and the expression levels of osteogenesis-related genes were evaluated by alizarin red staining and real-time quantitative PCR, respectively. Each group has three samples in every experiment. Results: After alternative loop immersing, the MN's original microholes (20 μm in diameter) were retained, and the uniform petal-like hydroxyapatite was deposited on the MN's original titania nanotubes (70 nm in diameter). Compared with the control, BMMSC on MN and HA elongated further and intersected along the micron structure with noticeable pseudopodia and pseudoplates, and the trend was more pronounced especially on HA. The number of early adherent cells on HA was remarkably larger than that on the control and MN at each time point (P<0.05). On day 1, the A value of cell proliferation on HA was significantly higher than that on the control and MN (P<0.05). The A value of cell proliferation on HA was significantly lower than that on the control and MN on day 3 (P<0.05). On day 7, the A value of cell proliferation on HA was significantly lower than that on MN (P<0.05), but there was no statistically significant difference in the A value of cell proliferation between HA and the control on day 7 (P>0.05). The Avalue of extracellular matrix mineralization on HA (0.607±0.011) was significantly higher than that on the control and MN (0.268±0.025 and 0.522±0.022, respectively) (t=-0.25, P<0.001; t=-0.34, P<0.001). The expression levels of bone related genes on HA were significantly higher than those on the control and MN (P<0.05). Conclusions: HA could promote the BMMSC adhesion and osteogenic differentiation, support BMMSC proliferation, and demonstrate good osteogenic activity.
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Affiliation(s)
- Z Q Xu
- Department of Stomatology, Teaching Hospital of Fujian Medical University & Affiliated Hospital of Putian University, Putian 351100, China
| | - Y Q He
- Department of Stomatology, Teaching Hospital of Fujian Medical University & Affiliated Hospital of Putian University, Putian 351100, China
| | - J H Huang
- Department of Stomatology, Teaching Hospital of Fujian Medical University & Affiliated Hospital of Putian University, Putian 351100, China
| | - Z W Qiu
- Department of Stomatology, Teaching Hospital of Fujian Medical University & Affiliated Hospital of Putian University, Putian 351100, China
| | - X X Zeng
- Department of Stomatology, Teaching Hospital of Fujian Medical University & Affiliated Hospital of Putian University, Putian 351100, China
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Liu WW, Li CX, Cui CY, Liu GL, Lei YX, Zheng YW, Da SJ, Xu ZQ, Zou R, Kong LB, Ran F. Strengthened Interficial Adhesive Fracture Energy by Young's Modulus Matching Degree Strategy in Carbon-Based HTM Free MAPbI 3 Perovskite Solar Cell with Enhanced Mechanical Compatibility. Small 2024; 20:e2304452. [PMID: 37752683 DOI: 10.1002/smll.202304452] [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] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 09/11/2023] [Indexed: 09/28/2023]
Abstract
Carbon-based hole transport layer-free perovskite solar cells (PSCs) based on methylammonium lead triiodide (MAPbI3 ) have become one of the research focus due to low cost, easy preparation, and good optoelectronic properties. However, instability of perovskite under vacancy defects and stress-strain makes it difficult to achieve high-efficiency and stable power output. Here, a soft-structured long-chain 2D pentanamine iodide (abbreviated as "PI") is used to improve perovskite quality and interfacial mechanical compatibility. PI containing CH3 (CH2 )4 NH3 + and I- ions not only passivate defects at grain boundaries, but also effectively alleviate residual stress during high temperature annealing via decreasing Young's modulus of perovskite film. Most importantly, PI effectively increases matching degree of Young's modulus between MAPbI3 (47.1 GPa) and carbon (6.7 GPa), and strengthens adhesive fracture energy (Gc ) between perovskite and carbon, which is helpful for outward release of nascent interfacial stress generated under service conditions. Consequently, photoelectric conversion efficiency (PCE) of optimal device is enhanced from 10.85% to 13.76% and operational stability is also significantly improved. 83.1% output is maintained after aging for 720 h at room temperature and 25-60% relative humidity (RH). This strategy of regulation from chemistry and physics provides a strategy for efficient and stable carbon-based PSCs.
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Affiliation(s)
- Wen-Wu Liu
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
- School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
| | - Cai-Xia Li
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
- School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
| | - Chong-Yang Cui
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
- School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
| | - Guang-Long Liu
- Nickel-Cobalt New Materials Technology Innovation Center Co. LTD of Gansu Jinchuan, Jinchang, 737100, P. R. China
| | - Yi-Xiao Lei
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
- School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
| | - Ya-Wen Zheng
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
- School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
| | - Shi-Ji Da
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
- School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
| | - Zhi-Qiang Xu
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
- School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
| | - Rong Zou
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
- School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
| | - Ling-Bin Kong
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
- School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
| | - Fen Ran
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
- School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, 730050, P. R. China
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9
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Wang XH, Xu ZQ, Bian Z, Meng LY. [Research progress in associations between dental caries and systemic diseases]. Zhonghua Kou Qiang Yi Xue Za Zhi 2024; 59:99-104. [PMID: 38172069 DOI: 10.3760/cma.j.cn112144-20230926-00169] [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] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Dental caries is a bacteria-mediated, multifactorial, chronic progressive disease that results in the phasic demineralization and remineralization of dental hard tissues. In recent years, amounts of studies have focused on the association between dental caries and systemic diseases. This paper reviews the researches about associations between caries and systemic diseases. An electronic search was conducted in PubMed and Web of Science for articles published from 2003 to 2022 in the English language. Studies were included in the following ten categories of systemic diseases: cardiovascular diseases, metabolic disorders, respiratory diseases, autoimmune rheumatic diseases, neurologic diseases, gastrointestinal diseases, kidney diseases, skin diseases, iron deficiency anaemia and tumors. This review discusses the relationship between dental caries and systemic diseases, as well as the potentially involved mechanisms, providing new ideas for disease prevention, diagnosis, and treatment strategies for dentists and other clinicians.
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Affiliation(s)
- X H Wang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | - Z Q Xu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | - Z Bian
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | - L Y Meng
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China
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10
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Tao X, Zhu JY, Xu ZQ, Wu QJ, Jin D, Zhang Y, Luo Y, Huang WX. [A case analysis of multidisciplinary treatment for a patient with esthetic defects of upper anterior teeth with the aid of digital technology]. Zhonghua Kou Qiang Yi Xue Za Zhi 2023; 58:1296-1299. [PMID: 38061873 DOI: 10.3760/cma.j.cn112144-20230816-00085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Affiliation(s)
- X Tao
- Department of Prosthodontics, Stomatological Hospital of Xiamen Medical College & Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen 361009, China
| | - J Y Zhu
- Department of Prosthodontics, Stomatological Hospital of Xiamen Medical College & Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen 361009, China
| | - Z Q Xu
- Department of Digital Clinical Department, Stomatological Hospital of Xiamen Medical College & Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen 361009, China
| | - Q J Wu
- Department of Prosthodontics, Stomatological Hospital of Xiamen Medical College & Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen 361009, China
| | - D Jin
- Department of Digital Clinical Department, Stomatological Hospital of Xiamen Medical College & Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen 361009, China
| | - Y Zhang
- Department of Prosthodontics, Stomatological Hospital of Xiamen Medical College & Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen 361009, China
| | - Y Luo
- Department of Digital Clinical Department, Stomatological Hospital of Xiamen Medical College & Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen 361009, China
| | - W X Huang
- Department of Periodontics, Stomatological Hospital of Xiamen Medical College, Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen 361009, China
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11
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Song LB, Jiao YX, Xu ZQ, Zhu DX, Yang YS, Wei JF, Sun JL, Lu Y. Identification of Pla a 7 as a novel pollen allergen group in Platanus acerifolia pollen. Int Immunopharmacol 2023; 125:111160. [PMID: 37948987 DOI: 10.1016/j.intimp.2023.111160] [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] [Revised: 10/21/2023] [Accepted: 10/31/2023] [Indexed: 11/12/2023]
Abstract
BACKGROUND Platanus acerifolia is recognized as a source of allergenic pollen worldwide. Currently, five Platanus acerifolia pollen allergens belonging to different protein families have been identified, in which profilin and enolase were characterized by our group recently. Besides, we also screened and identified a novel allergen candidate as triosephosphate isomerase, which was different from already known types of pollen allergens. However, the role of this novel allergen group in Platanus acerifolia pollen allergy was unclear. Therefore, we further investigated the allergenicity and clarify its clinical relevance in this study. METHODS The natural triosephosphate isomerase from Platanus acerifolia pollen was purified by three steps of chromatography and identified by mass spectrometry. The cDNA sequence of this protein was matched from in-house transcripts based on internal peptide sequences, which was further confirmed by PCR cloning. The recombinant triosephosphate isomerase was expressed and purified from E. coli. Allergenicity analysis of this protein was carried out by enzyme linked immunosorbent assay, immunoblot, and basophil activation test. RESULTS A novel allergen group belonging to triosephosphate isomerase was firstly identified in Platanus acerifolia pollen and named as Pla a 7. The cDNA of Pla a 7 contained an open reading frame of 762 bp encoding 253 amino acids. The natural Pla a 7 displayed 41.4% IgE reactivity with the patients' sera by ELISA, in which the absorbance value showed correlation to the serum sIgE against Platanus acerifolia pollen extract. Inhibition of IgE-binding to pollen extracts reached 26%-94% in different Pla a 7-positive sera. The recombinant Pla a 7 exhibited weaker IgE-reactivity in ELISA than its natural form, but showed comparable activity in immunoblot. The allergenicity was further confirmed by basophil activation test. CONCLUSIONS Triosephosphate isomerase (Pla a 7) was first recognized as pollen allergen in Platanus acerifolia pollen, which is a completely different type of pollen allergen from those previously reported. This finding is essential to enrich information on allergen components and pave the way for molecular diagnosis or treatment strategies for Platanus acerifolia pollen allergy.
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Affiliation(s)
- Le-Bin Song
- Department of Dermatology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yong-Xin Jiao
- Department of Pharmacy, The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing, China
| | - Zhi-Qiang Xu
- Research Division of Clinical Pharmacology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Dan-Xuan Zhu
- Research Division of Clinical Pharmacology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yong-Shi Yang
- Department of Allergy, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ji-Fu Wei
- Department of Pharmacy, The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing, China; Research Division of Clinical Pharmacology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
| | - Jin-Lyu Sun
- Department of Allergy, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Yan Lu
- Department of Dermatology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
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12
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Zhuang JL, Xu ZQ, Jin D, Wu QJ. [Clinical comparative study of efficacy of Er:YAG laser for debonding different veneers]. Shanghai Kou Qiang Yi Xue 2023; 32:578-582. [PMID: 38494964] [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] [Subscribe] [Scholar Register] [Indexed: 03/19/2024]
Abstract
PURPOSE To compare the debonding time of IPS e.max CAD lithium disilicate glass-ceramic veneers in different thickness and transparency using Er:YAG laser, and evaluate the effect of Er:YAG laser on the surface topography of the veneers and the underlying tooth. METHODS A total of twelve maxillary first premolar teeth were collected and prepared, then veneers were made by computer aided design and computer aided manufacture(CAD/CAM) system. The veneers were divided into four groups according to different thicknesses and transparency: e.max HT with 0.5 mm and 1.0 mm thickness, e.max LT with 0.5 mm and 1.0 mm thickness. Three veneers of each group were cemented to prepared premolar with resin cement and then stored in normal saline solution at room temperature for 7 days. All veneers were debonded with Er:YAG laser and the debonding time of all-ceramic veneers of all groups was recorded. Scanning electron microscopy(SEM) observation was performed to detect the surface topography of the veneers and the underlying tooth. SPSS 19.0 software package was used for statistical analysis. RESULTS The debonding time of 1.0 mm-thick groups were longer than 0.5 mm-thick groups. When the veneer thickness was 0.5 mm, the average debonding time of e.max LT group was longer than e.max HT. Consistent with the finding of 0.5 mm, the longer debonding time was found in the e.max LT group of 1.0mm. No cracks and crater structure were found in SEM observation of veneers after Er:YAG laser irradiation. Teeth surface was covered with bonding cement with no signs of ablation or damage of the enamel. CONCLUSIONS Er:YAG laser can completely debond lithium disilicate glass-ceramic veneers, and the debonding time depends on the transparency and thickness of the veneers. The lower translucent porcelain veneers (e.max LT) and thicker ones (1.0 mm-thick) had a longer debonding time. Moreover, Er:YAG laser does not damage the morphology and topography of the veneer and the teeth surface.
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Affiliation(s)
- Jiao-Ling Zhuang
- Stomatological Hospital of Xiamen Medical College, Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment. Xiamen 361008, Fujian Province, China. E-mail:
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13
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Whinn KS, Xu ZQ, Jergic S, Sharma N, Spenkelink LM, Dixon NE, van Oijen AM, Ghodke H. Single-molecule visualization of stalled replication-fork rescue by the Escherichia coli Rep helicase. Nucleic Acids Res 2023; 51:3307-3326. [PMID: 36938885 PMCID: PMC10123100 DOI: 10.1093/nar/gkad186] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 02/09/2023] [Accepted: 03/17/2023] [Indexed: 03/21/2023] Open
Abstract
Genome duplication occurs while the template DNA is bound by numerous DNA-binding proteins. Each of these proteins act as potential roadblocks to the replication fork and can have deleterious effects on cells. In Escherichia coli, these roadblocks are displaced by the accessory helicase Rep, a DNA translocase and helicase that interacts with the replisome. The mechanistic details underlying the coordination with replication and roadblock removal by Rep remain poorly understood. Through real-time fluorescence imaging of the DNA produced by individual E. coli replisomes and the simultaneous visualization of fluorescently-labeled Rep, we show that Rep continually surveils elongating replisomes. We found that this association of Rep with the replisome is stochastic and occurs independently of whether the fork is stalled or not. Further, we visualize the efficient rescue of stalled replication forks by directly imaging individual Rep molecules as they remove a model protein roadblock, dCas9, from the template DNA. Using roadblocks of varying DNA-binding stabilities, we conclude that continuation of synthesis is the rate-limiting step of stalled replication rescue.
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Affiliation(s)
- Kelsey S Whinn
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia.,Illawarra Health & Medical Research Institute, Wollongong, New South Wales 2522, Australia
| | - Zhi-Qiang Xu
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia.,Illawarra Health & Medical Research Institute, Wollongong, New South Wales 2522, Australia
| | - Slobodan Jergic
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia.,Illawarra Health & Medical Research Institute, Wollongong, New South Wales 2522, Australia
| | - Nischal Sharma
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia.,Illawarra Health & Medical Research Institute, Wollongong, New South Wales 2522, Australia
| | - Lisanne M Spenkelink
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia.,Illawarra Health & Medical Research Institute, Wollongong, New South Wales 2522, Australia
| | - Nicholas E Dixon
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia.,Illawarra Health & Medical Research Institute, Wollongong, New South Wales 2522, Australia
| | - Antoine M van Oijen
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia.,Illawarra Health & Medical Research Institute, Wollongong, New South Wales 2522, Australia
| | - Harshad Ghodke
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia.,Illawarra Health & Medical Research Institute, Wollongong, New South Wales 2522, Australia
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14
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Wang Y, Tan LX, Xu ZQ, Jiao YX, Zhu DX, Yang YS, Wei JF, Sun JL, Tian M. Identification and characterization of natural PR-1 protein as major allergen from Humulus japonicus pollen. Mol Immunol 2023; 153:170-180. [PMID: 36525884 DOI: 10.1016/j.molimm.2022.11.023] [Citation(s) in RCA: 2] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 11/23/2022] [Accepted: 11/30/2022] [Indexed: 12/16/2022]
Abstract
BACKGROUND The Humulus japonicus pollen is one of the most common allergenic pollens in China. However, little is unveiled regarding the allergenic components in Humulus japonicus pollen. Our study aimed to purify and identify the pathogenesis-related 1 (PR-1) protein from Humulus japonicus pollen, and to characterize the molecular and immunochemical properties of this novel allergen. METHODS The natural PR-1 protein (named as Hum j PR-1) was purified from Humulus japonicus pollen extracts with a combined strategy of chromatography, and identified by mass spectrometry. The coding sequence of Hum j PR-1 was confirmed by cDNA cloning. The recombinant Hum j PR-1 was expressed and purified from Escherichia coli. The allergenicity was assessed by immunoblot, enzyme-linked immunosorbent assay (ELISA), inhibition ELISA, and basophil activation test using Humulus japonicus allergic patients' whole blood. The physicochemical properties and 3-dimensional structure of it were comprehensively characterized by in silico methods. RESULTS The allergenicity analysis revealed that 76.6 % (23/30) of the Humulus japonicus pollen allergic patients displayed specific IgE recognition of the natural Hum j PR-1. The cDNA sequence of Hum j PR-1 had a 516-bp open reading frame encoding 171 amino acids. Physicochemical analysis indicated that Hum j PR-1 was a stable and relatively thermostable protein. Hum j PR-1 shared a similar 3-dimensional folding pattern with other homologous allergens, which was a unique αβα sandwich structure containing 4 α-helices and 6 antiparallel β-sheets, encompassing 4 conserved CAP domain. CONCLUSION The natural PR-1 was firstly purified and characterized as a major allergenic allergen in Humulus japonicus pollen. These findings would contribute to developing diagnostic and therapeutic strategies for Humulus japonicus pollinosis.
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Affiliation(s)
- Ye Wang
- Department of Respiratory Medicine, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Ling-Xiao Tan
- Department of Respiratory Medicine, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Zhi-Qiang Xu
- Research Division of Clinical Pharmacology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yong-Xin Jiao
- Department of Pharmacy, The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing, China
| | - Dan-Xuan Zhu
- Clinical Allergy Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yong-Shi Yang
- Allergy Department, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ji-Fu Wei
- Department of Pharmacy, The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing, China; Clinical Allergy Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
| | - Jin-Lyu Sun
- Allergy Department, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Man Tian
- Department of Respiratory Medicine, Children's Hospital of Nanjing Medical University, Nanjing, China.
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15
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Jiao YX, Song LB, Xu ZQ, Zhu DX, Yang YS, Tian M, Sun JL, Wei JF. Purification and characterization of enolase as a novel allergen in Platanus acerifolia pollen. Int Immunopharmacol 2022; 113:109313. [DOI: 10.1016/j.intimp.2022.109313] [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] [Received: 07/13/2022] [Revised: 09/11/2022] [Accepted: 10/03/2022] [Indexed: 11/05/2022]
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16
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Ling XJ, Zhou YJ, Yang YS, Xu ZQ, Wang Y, Sun JL, Zhu Y, Wei JF. A new cysteine protease allergen from Ambrosia trifida pollen: proforms and mature forms. Mol Immunol 2022; 147:170-179. [DOI: 10.1016/j.molimm.2022.05.003] [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] [Received: 10/01/2021] [Revised: 05/05/2022] [Accepted: 05/09/2022] [Indexed: 10/18/2022]
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17
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Fan DY, Jian JM, Huang S, Li WW, Shen YY, Wang Z, Zeng GH, Yi X, Jin WS, Liu YH, Zeng F, Bu XL, Chen LY, Mao QX, Xu ZQ, Yu JT, Wang J, Wang YJ. Establishment of combined diagnostic models of Alzheimer's disease in a Chinese cohort: the Chongqing Ageing & Dementia Study (CADS). Transl Psychiatry 2022; 12:252. [PMID: 35710549 PMCID: PMC9203516 DOI: 10.1038/s41398-022-02016-7] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 05/18/2022] [Accepted: 05/31/2022] [Indexed: 11/09/2022] Open
Abstract
Cerebrospinal fluid (CSF) biomarkers are essential for the accurate diagnosis of Alzheimer's disease (AD), yet their measurement levels vary widely across centers and regions, leaving no uniform cutoff values to date. Diagnostic cutoff values of CSF biomarkers for AD are lacking for the Chinese population. As a member of the Alzheimer's Association Quality Control program for CSF biomarkers, we aimed to establish diagnostic models based on CSF biomarkers and risk factors for AD in a Chinese cohort. A total of 64 AD dementia patients and 105 age- and sex-matched cognitively normal (CN) controls from the Chongqing Ageing & Dementia Study cohort were included. CSF Aβ42, P-tau181, and T-tau levels were measured by ELISA. Combined biomarker models and integrative models with demographic characteristics were established by logistic regression. The cutoff values to distinguish AD from CN were 933 pg/mL for Aβ42, 48.7 pg/mL for P-tau181 and 313 pg/mL for T-tau. The AN model, including Aβ42 and T-tau, had a higher diagnostic accuracy of 89.9%. Integrating age and APOE ε4 status to AN model (the ANA'E model) increased the diagnostic accuracy to 90.5% and improved the model performance. This study established cutoff values of CSF biomarkers and optimal combined models for AD diagnosis in a Chinese cohort.
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Affiliation(s)
- Dong-Yu Fan
- grid.410570.70000 0004 1760 6682Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China ,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China ,grid.410570.70000 0004 1760 6682Shigatse Branch, Xinqiao Hospital, Third Military Medical University, Shigatse, China
| | - Jie-Ming Jian
- grid.410570.70000 0004 1760 6682Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China ,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Shan Huang
- grid.410570.70000 0004 1760 6682Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China ,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China ,grid.263452.40000 0004 1798 4018First Clinical Medical College, Shanxi Medical University, Taiyuan, China ,grid.263452.40000 0004 1798 4018Department of Neurology, First Affiliated Hospital, Shanxi Medical University, Taiyuan, China
| | - Wei-Wei Li
- grid.410570.70000 0004 1760 6682Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China ,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China ,Department of Neurology, Western Theater General Hospital, Chengdu, China
| | - Ying-Ying Shen
- grid.410570.70000 0004 1760 6682Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China ,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Zhen Wang
- grid.410570.70000 0004 1760 6682Department of Critical Care Medicine, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Gui-Hua Zeng
- grid.410570.70000 0004 1760 6682Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China ,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Xu Yi
- grid.410570.70000 0004 1760 6682Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China ,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Wang-Sheng Jin
- grid.410570.70000 0004 1760 6682Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China ,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Yu-Hui Liu
- grid.410570.70000 0004 1760 6682Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China ,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Fan Zeng
- grid.410570.70000 0004 1760 6682Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China ,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Xian-Le Bu
- grid.410570.70000 0004 1760 6682Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China ,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Li-Yong Chen
- grid.410570.70000 0004 1760 6682Department of Anaesthesiology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Qing-Xiang Mao
- grid.410570.70000 0004 1760 6682Department of Anaesthesiology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Zhi-Qiang Xu
- grid.410570.70000 0004 1760 6682Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China ,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Jin-Tai Yu
- grid.8547.e0000 0001 0125 2443Department of Neurology and Institute of Neurology, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, Shanghai, China
| | - Jun Wang
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China. .,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China.
| | - Yan-Jiang Wang
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China. .,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China. .,State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, China. .,Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, China.
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18
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Paudel BP, Xu ZQ, Jergic S, Oakley AJ, Sharma N, Brown SHJ, Bouwer JC, Lewis PJ, Dixon NE, van Oijen AM, Ghodke H. Mechanism of transcription modulation by the transcription-repair coupling factor. Nucleic Acids Res 2022; 50:5688-5712. [PMID: 35641110 PMCID: PMC9177983 DOI: 10.1093/nar/gkac449] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 05/06/2022] [Accepted: 05/13/2022] [Indexed: 11/27/2022] Open
Abstract
Elongation by RNA polymerase is dynamically modulated by accessory factors. The transcription-repair coupling factor (TRCF) recognizes paused/stalled RNAPs and either rescues transcription or initiates transcription termination. Precisely how TRCFs choose to execute either outcome remains unclear. With Escherichia coli as a model, we used single-molecule assays to study dynamic modulation of elongation by Mfd, the bacterial TRCF. We found that nucleotide-bound Mfd converts the elongation complex (EC) into a catalytically poised state, presenting the EC with an opportunity to restart transcription. After long-lived residence in this catalytically poised state, ATP hydrolysis by Mfd remodels the EC through an irreversible process leading to loss of the RNA transcript. Further, biophysical studies revealed that the motor domain of Mfd binds and partially melts DNA containing a template strand overhang. The results explain pathway choice determining the fate of the EC and provide a molecular mechanism for transcription modulation by TRCF.
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Affiliation(s)
- Bishnu P Paudel
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW 2522, Australia.,Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia
| | - Zhi-Qiang Xu
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW 2522, Australia.,Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia
| | - Slobodan Jergic
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW 2522, Australia.,Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia
| | - Aaron J Oakley
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW 2522, Australia.,Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia
| | - Nischal Sharma
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW 2522, Australia.,Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia
| | - Simon H J Brown
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW 2522, Australia.,Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia.,ARC Industrial Transformation Training Centre for Cryo-electron Microscopy of Membrane Proteins, University of Wollongong, Wollongong, NSW 2522, Australia
| | - James C Bouwer
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW 2522, Australia.,Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia.,ARC Industrial Transformation Training Centre for Cryo-electron Microscopy of Membrane Proteins, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Peter J Lewis
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW 2522, Australia.,School of Environmental and Life Sciences, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Nicholas E Dixon
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW 2522, Australia.,Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia.,ARC Industrial Transformation Training Centre for Cryo-electron Microscopy of Membrane Proteins, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Antoine M van Oijen
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW 2522, Australia.,Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia.,ARC Industrial Transformation Training Centre for Cryo-electron Microscopy of Membrane Proteins, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Harshad Ghodke
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW 2522, Australia.,Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia
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Cui CY, Li CX, Liu WW, Liu YC, Niu ST, Xu ZQ, Zou R, Niu WJ, Liu MC, Liu MJ, Gu B, Zhao K, Liu N, Lin CJ, Wu YZ, Chueh YL. Rational Design on Chemical Regulation of Interfacial Microstress Engineering by Matching Young's Modulus in a CsPbBr 3 Perovskite Film with Mechanical Compatibility toward Enhanced Photoelectric Conversion Efficiency. ACS Appl Mater Interfaces 2022; 14:20257-20267. [PMID: 35451814 DOI: 10.1021/acsami.2c02694] [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] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Thermodynamically induced tensile stress in the perovskite film will lead to the formation of atomic vacancies, seriously destroying the photovoltaic efficiency stability of the perovskite solar cells (PSCs). Among them, cations and halide anions vacancies are unavoidable; these point vacancies are considered to be a major source of the ionic migration and perovskite degradation at the crystal boundary and surface of the perovskite films. Here, we use choline bromide to modify the perovskite film by occupying the atomic defects in the CsPbBr3 perovskite film. The results show that the zwitterion quaternary ammonium ions and bromide ions in choline bromide can simultaneously occupy the Cs+ cation and Br- anions vacancies in the perovskite film by the ionic bonding effect, for which the defect-state density on the surface of the perovskite film can be significantly reduced, leading to the effective enhancement of carrier lifetime. In addition, the residual stress at the crystal boundary can be effectively reduced by lowering the Young's modulus in the CsPbBr3 perovskite film. As a result, the optimized device achieves a photoelectric conversion efficiency (PCE) of 9.06% with an increase of 41.1% compared to the control device with a PCE of 6.42%. Most importantly, the newborn thermal stress due to thermal expansion during heat working conditions can be transferred from the polycrystalline perovskite to the carbon layer by the matched Young's modulus, thus resulting in improved stability perovskite film under environmental conditions. The work provides new insights for preparing high-quality perovskite films with low defect-state density and residual stress.
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Affiliation(s)
- Chong-Yang Cui
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, PR China
- College of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, PR China
| | - Cai-Xia Li
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, PR China
- College of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, PR China
| | - Wen-Wu Liu
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, PR China
- College of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, PR China
| | - Yu-Cheng Liu
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, PR China
- College of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, PR China
| | - Sheng-Tao Niu
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, PR China
- College of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, PR China
| | - Zhi-Qiang Xu
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, PR China
- College of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, PR China
| | - Rong Zou
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, PR China
- College of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, PR China
| | - Wen-Jun Niu
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, PR China
- College of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, PR China
| | - Mao-Cheng Liu
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, PR China
- College of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, PR China
| | - Ming-Jin Liu
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
- Department of Physics, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan
| | - Bingni Gu
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
- Department of Physics, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan
| | - Kun Zhao
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, PR China
- College of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, PR China
| | - Na Liu
- Zibo Institute of Measurement Technology, Zibo 255020, PR China
| | - Chun-Jung Lin
- Foshan Flex Photonics Co. Ltd., Foshan 528299, PR China
| | - You-Zhi Wu
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, PR China
- College of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, PR China
| | - Yu-Lun Chueh
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
- Department of Physics, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan
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20
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Yang YS, Xu ZQ, Zhu W, Zhu DX, Jiao YX, Zhang LS, Hou YB, Wei JF, Sun JL. Molecular and immunochemical characterization of profilin as major allergen from Platanus acerifolia pollen. Int Immunopharmacol 2022; 106:108601. [DOI: 10.1016/j.intimp.2022.108601] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 01/10/2022] [Accepted: 01/30/2022] [Indexed: 01/03/2023]
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21
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Liu YH, Chen Y, Wang QH, Wang LR, Jiang L, Yang Y, Chen X, Li Y, Cen Y, Xu C, Zhu J, Li W, Wang YR, Zhang LL, Liu J, Xu ZQ, Wang YJ. One-Year Trajectory of Cognitive Changes in Older Survivors of COVID-19 in Wuhan, China: A Longitudinal Cohort Study. JAMA Neurol 2022; 79:509-517. [PMID: 35258587 PMCID: PMC8905512 DOI: 10.1001/jamaneurol.2022.0461] [Citation(s) in RCA: 104] [Impact Index Per Article: 52.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Importance Determining the long-term impact of COVID-19 on cognition is important to inform immediate steps in COVID-19 research and health policy. Objective To investigate the 1-year trajectory of cognitive changes in older COVID-19 survivors. Design, Setting, and Participants This cohort study recruited 3233 COVID-19 survivors 60 years and older who were discharged from 3 COVID-19-designated hospitals in Wuhan, China, from February 10 to April 10, 2020. Their uninfected spouses (N = 466) were recruited as a control population. Participants with preinfection cognitive impairment, a concomitant neurological disorder, or a family history of dementia were excluded, as well as those with severe cardiac, hepatic, or kidney disease or any kind of tumor. Follow-up monitoring cognitive functioning and decline took place at 6 and 12 months. A total of 1438 COVID-19 survivors and 438 control individuals were included in the final follow-up. COVID-19 was categorized as severe or nonsevere following the American Thoracic Society guidelines. Main Outcomes and Measures The main outcome was change in cognition 1 year after patient discharge. Cognitive changes during the first and second 6-month follow-up periods were assessed using the Informant Questionnaire on Cognitive Decline in the Elderly and the Telephone Interview of Cognitive Status-40, respectively. Based on the cognitive changes observed during the 2 periods, cognitive trajectories were classified into 4 categories: stable cognition, early-onset cognitive decline, late-onset cognitive decline, and progressive cognitive decline. Multinomial and conditional logistical regression models were used to identify factors associated with risk of cognitive decline. Results Among the 3233 COVID-19 survivors and 1317 uninfected spouses screened, 1438 participants who were treated for COVID-19 (691 male [48.05%] and 747 female [51.95%]; median [IQR] age, 69 [66-74] years) and 438 uninfected control individuals (222 male [50.68%] and 216 female [49.32%]; median [IQR] age, 67 [66-74] years) completed the 12-month follow-up. The incidence of cognitive impairment in survivors 12 months after discharge was 12.45%. Individuals with severe cases had lower Telephone Interview of Cognitive Status-40 scores than those with nonsevere cases and control individuals at 12 months (median [IQR]: severe, 22.50 [16.00-28.00]; nonsevere, 30.00 [26.00-33.00]; control, 31.00 [26.00-33.00]). Severe COVID-19 was associated with a higher risk of early-onset cognitive decline (odds ratio [OR], 4.87; 95% CI, 3.30-7.20), late-onset cognitive decline (OR, 7.58; 95% CI, 3.58-16.03), and progressive cognitive decline (OR, 19.00; 95% CI, 9.14-39.51), while nonsevere COVID-19 was associated with a higher risk of early-onset cognitive decline (OR, 1.71; 95% CI, 1.30-2.27) when adjusting for age, sex, education level, body mass index, and comorbidities. Conclusions and Relevance In this cohort study, COVID-19 survival was associated with an increase in risk of longitudinal cognitive decline, highlighting the importance of immediate measures to deal with this challenge.
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Affiliation(s)
- Yu-Hui Liu
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Yang Chen
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Qing-Hua Wang
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Ling-Ru Wang
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Li Jiang
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Ying Yang
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Xian Chen
- Department of Anaesthesiology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Ying Li
- Department of Ophthalmology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Yuan Cen
- Department of Orthopedics, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Cheng Xu
- Department of Oncology, General Hospital of the Central Theatre Command of the People's Liberation Army, Wuhan, China
| | - Jie Zhu
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Wei Li
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Ye-Ran Wang
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Li-Li Zhang
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Juan Liu
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Zhi-Qiang Xu
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Yan-Jiang Wang
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
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22
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Xu ZQ, Zhu LX, Lu C, Jiao YX, Zhu DX, Guo M, Yang YS, Cao MD, Zhang LS, Tian M, Sun JL, Wei JF. Identification of Per a 13 as a novel allergen in American cockroach. Mol Immunol 2022; 143:41-49. [PMID: 35033813 DOI: 10.1016/j.molimm.2022.01.004] [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: 08/20/2021] [Revised: 12/29/2021] [Accepted: 01/08/2022] [Indexed: 11/16/2022]
Abstract
BACKGROUND Cockroaches are an important source of indoor allergens. Environmental exposure to cockroach allergens is closely associated with the development of immunoglobulin E (IgE)-mediated allergic diseases. However, the allergenic components in the American cockroaches are not fully studied yet. In order to develop novel diagnostic and therapeutic strategies for cockroach allergy, it is necessary to comprehensively investigate this undescribed allergen in the American cockroach. METHODS The full-length cDNA of the potential allergen was isolated from the cDNA library of the American cockroach by PCR cloning. Both the recombinant and natural protein molecules were purified and characterized. The allergenicity was further analyzed by enzyme linked immunosorbent assay, immunoblot, and basophil activation test using sera from cockroach allergic patients. RESULTS A novel allergen belonging to glyceraldehyde 3-phosphate dehydrogenase (GAPDH) was firstly identified in the American cockroach and named as Per a 13. The cDNA of this allergen is 1255 base pairs in length and contains an open reading frame of 999 base pairs, encoding 332 amino acids. The purified Per a 13 was fully characterized and assessed to react with IgEs from 49.3 % of cockroach allergic patients, and patients with allergic rhinitis were more sensitized to it. Moreover, the allergenicity was further confirmed by immunoblot and basophil activation test. CONCLUSIONS We firstly identified GAPDH (Per a 13) in the American cockroach, which is a novel type of inhalant allergen derived from animal species. These findings could be useful in developing novel diagnostic and therapeutic strategies for cockroach allergy.
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Affiliation(s)
- Zhi-Qiang Xu
- Research Division of Clinical Pharmacology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Li-Xiang Zhu
- Research Division of Clinical Pharmacology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Chen Lu
- Precision Medicine Center, the First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Yong-Xin Jiao
- Research Division of Clinical Pharmacology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Dan-Xuan Zhu
- Clinical Allergy Center, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Miao Guo
- Research Division of Clinical Pharmacology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yong-Shi Yang
- Department of Allergy, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Meng-Da Cao
- Research Division of Clinical Pharmacology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Li-Shan Zhang
- Department of Allergy, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Man Tian
- Department of Respiratory Medicine, Children's Hospital of Nanjing Medical University, Nanjing, China.
| | - Jin-Lyu Sun
- Department of Allergy, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China.
| | - Ji-Fu Wei
- Research Division of Clinical Pharmacology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China; Department of Pharmacy, Jiangsu Cancer Hospital, The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Institute of Cancer Research, Nanjing, China; Clinical Allergy Center, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China; Department of Clinical Pharmacy, School of Pharmacy, Nanjing Medical University, Nanjing, China.
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23
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Wu XP, Xu ZQ, Xie WM, Lai YL, He K, Jiang Y, Xu ZC, Lin YN, Xie YF. Long non-coding RNA GAS6-AS1 enhances breast cancer cell aggressiveness by functioning as a competing endogenous RNA of microRNA-215-5p to enhance SOX9 expression. Exp Ther Med 2022; 23:109. [PMID: 34976151 DOI: 10.3892/etm.2021.11032] [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: 05/31/2020] [Accepted: 12/01/2020] [Indexed: 11/06/2022] Open
Abstract
Long non-coding (lnc) RNAs play crucial functions in human cancer. However, until recently, the involvement of the lncRNA GAS6-AS1 in breast cancer (BCa) malignancy has not been studied exhaustively. The roles and underlying mode of action of GAS6-AS1 action in BCa progression were examined through functional experiments. A decline in GAS6-AS1 level led to a significant decrease in BCa cell proliferation, and the ability for colony formation. Here, GAS6-AS1 competed as endogenous RNA by sequestering microRNA-215-5p (miR-215-5p) causing an enhanced expression of SRY-box transcription factor 9 (SOX9). The effects of silencing GAS6-AS1 on BCa malignant phenotypes could be ameliorated by inhibiting miR-215-5p or restoring SOX9. Thus, GAS6-AS1 acted as a lncRNA that drives tumor in BCa, and enabled progression of BCa through miR-215-5p /SOX9 axis regulation. These outcomes show that the GAS6-AS1/miR-215-5p/SOX9 axis is a potentially effective target for cancer treatment and management.
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Affiliation(s)
- Xiu-Ping Wu
- Department of Breast Surgery, Zhengxing Hospital, Zhangzhou, Fujian 363000, P.R. China
| | - Zhi-Qiang Xu
- Department of Breast Surgery, Zhengxing Hospital, Zhangzhou, Fujian 363000, P.R. China
| | - Wang-Mei Xie
- Department of Breast Surgery, Zhengxing Hospital, Zhangzhou, Fujian 363000, P.R. China
| | - Yao-Long Lai
- Department of Breast Surgery, Zhengxing Hospital, Zhangzhou, Fujian 363000, P.R. China
| | - Kai He
- Department of Breast Surgery, Zhengxing Hospital, Zhangzhou, Fujian 363000, P.R. China
| | - Yan Jiang
- Department of Breast Surgery, Zhengxing Hospital, Zhangzhou, Fujian 363000, P.R. China
| | - Zhen-Chao Xu
- Department of Breast Surgery, Zhengxing Hospital, Zhangzhou, Fujian 363000, P.R. China
| | - Yi-Na Lin
- Department of Radiation Oncology, Zhangzhou Hospital Affiliated to Fujian Medical University, Zhangzhou, Fujian 363000, P.R. China
| | - Yuan-Fu Xie
- Department of Radiation Oncology, Zhangzhou Hospital Affiliated to Fujian Medical University, Zhangzhou, Fujian 363000, P.R. China
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24
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Yu PY, Zhu Y, Tan LX, Xu ZQ, Lu C, Guan XW. Immunoinformatics Construction of B Cell Epitope-Based Hypoallergenic Der f 34 Vaccine for Immunotherapy of House Dust Mite Allergy. Int J Pept Res Ther 2021. [DOI: 10.1007/s10989-021-10337-2] [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: 10/19/2022]
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25
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Xu MY, Xu ZQ, Wang YJ. White Matter "Matters" in Alzheimer's Disease. Neurosci Bull 2021; 38:323-326. [PMID: 34854054 PMCID: PMC8975923 DOI: 10.1007/s12264-021-00803-8] [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: 09/04/2021] [Accepted: 10/12/2021] [Indexed: 11/24/2022] Open
Affiliation(s)
- Man-Yu Xu
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042 China ,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, 400042 China
| | - Zhi-Qiang Xu
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042 China ,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, 400042 China
| | - Yan-Jiang Wang
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China. .,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, 400042, China. .,The Institute of Brain and Intelligence, Third Military Medical University, Chongqing, 400042, China.
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26
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Liu W, Xu ZQ, Long YJ, Feng MQ. Replenishment of urban landscape ponds with reclaimed water: Spatiotemporal variations of water quality and mechanism of algal inhibition with alum sludge. Sci Total Environ 2021; 790:148052. [PMID: 34090163 DOI: 10.1016/j.scitotenv.2021.148052] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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: 03/22/2021] [Revised: 05/11/2021] [Accepted: 05/21/2021] [Indexed: 06/12/2023]
Abstract
Algal blooms caused by high concentrations of nutrients (especially phosphorus) limit the use of recycled water (RW) for replenishing landscape ponds in the context of global water scarcity. Previous studies have demonstrated that alum sludge is a low cost phosphorus sorption medium, which could potentially be applied in constructed wetlands and sewage treatment plants. However, whether alum sludge can be used for algae inhibition in reclaimed water urban landscape ponds (RWULPs) should be explored. In this study, phosphorus removal and algae inhibition by alum sludge were investigated in a RWULP in China. The results highlight that there is a serious risk of algal blooms in RWULPs. The algal density was found to be 1.58 × 105 cell·mL-1, which is 6.84 times higher than that of the surface water ponds. The algal blooms presented a Cyanophyta-Chlorophyta-Bacillariophyta-type, and the dominant algae species were Microcystis flos-aquae (Wittr.) Kirchner, Chlorella vulgaris, and Scenedesmus quadricauda. Moreover, the removal rate of phosphorus by alum sludge was as high as 98% and eventually leads to phosphorus stress, which has an important effect on algae growth and algae inhibition rate of 80%. In addition, the proportion of phosphorus and nitrogen in the adsorbed alum sludge increased by 3.12% and 0.32%, respectively, and Al3+ was reduced by only 2.18%. Alum sludge is a potential inhibitor of algae in RWULPs that does not negatively impact the environment. These results are of great importance in algal bloom control of RWULPs and may help alleviate the problem of urban water resource scarcity.
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Affiliation(s)
- W Liu
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi'an University of Technology, Xi'an 710048, P.R. China
| | - Z Q Xu
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi'an University of Technology, Xi'an 710048, P.R. China.
| | - Y J Long
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi'an University of Technology, Xi'an 710048, P.R. China; Su Qian Institute of Urban Planning and Design Institute Company Limited, P.R. China
| | - M Q Feng
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi'an University of Technology, Xi'an 710048, P.R. China
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Spinks RR, Spenkelink LM, Stratmann SA, Xu ZQ, Stamford NPJ, Brown SE, Dixon NE, Jergic S, van Oijen AM. DnaB helicase dynamics in bacterial DNA replication resolved by single-molecule studies. Nucleic Acids Res 2021; 49:6804-6816. [PMID: 34139009 PMCID: PMC8266626 DOI: 10.1093/nar/gkab493] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 05/16/2021] [Accepted: 05/25/2021] [Indexed: 01/09/2023] Open
Abstract
In Escherichia coli, the DnaB helicase forms the basis for the assembly of the DNA replication complex. The stability of DnaB at the replication fork is likely important for successful replication initiation and progression. Single-molecule experiments have significantly changed the classical model of highly stable replication machines by showing that components exchange with free molecules from the environment. However, due to technical limitations, accurate assessments of DnaB stability in the context of replication are lacking. Using in vitro fluorescence single-molecule imaging, we visualise DnaB loaded on forked DNA templates. That these helicases are highly stable at replication forks, indicated by their observed dwell time of ∼30 min. Addition of the remaining replication factors results in a single DnaB helicase integrated as part of an active replisome. In contrast to the dynamic behaviour of other replisome components, DnaB is maintained within the replisome for the entirety of the replication process. Interestingly, we observe a transient interaction of additional helicases with the replication fork. This interaction is dependent on the τ subunit of the clamp-loader complex. Collectively, our single-molecule observations solidify the role of the DnaB helicase as the stable anchor of the replisome, but also reveal its capacity for dynamic interactions.
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Affiliation(s)
- Richard R Spinks
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia.,Illawarra Health & Medical Research Institute, Wollongong, New South Wales 2522, Australia
| | - Lisanne M Spenkelink
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia.,Illawarra Health & Medical Research Institute, Wollongong, New South Wales 2522, Australia
| | - Sarah A Stratmann
- Zernike Institute for Advanced Materials, University of Groningen, Groningen 9747 AG, The Netherlands
| | - Zhi-Qiang Xu
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia.,Illawarra Health & Medical Research Institute, Wollongong, New South Wales 2522, Australia
| | - N Patrick J Stamford
- Research School of Chemistry, Australian National University, Canberra, Australian Capital Territory 2601, Australia
| | - Susan E Brown
- Research School of Chemistry, Australian National University, Canberra, Australian Capital Territory 2601, Australia
| | - Nicholas E Dixon
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia.,Illawarra Health & Medical Research Institute, Wollongong, New South Wales 2522, Australia.,Research School of Chemistry, Australian National University, Canberra, Australian Capital Territory 2601, Australia
| | - Slobodan Jergic
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia.,Illawarra Health & Medical Research Institute, Wollongong, New South Wales 2522, Australia
| | - Antoine M van Oijen
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia.,Illawarra Health & Medical Research Institute, Wollongong, New South Wales 2522, Australia
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28
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Zhang ZD, Zhou HP, Xue WD, Zhao R, Wang WJ, Feng TT, Xu ZQ, Zhang S, Liao JX, Wu MQ. Nitrogen-plasma doping of carbon film for a high-quality layered Si/C composite anode. J Colloid Interface Sci 2021; 605:463-471. [PMID: 34340033 DOI: 10.1016/j.jcis.2021.06.147] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [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: 04/28/2021] [Revised: 06/24/2021] [Accepted: 06/26/2021] [Indexed: 10/20/2022]
Abstract
The effect of the chemical component and microstructure, not to mention their facile modification, of the coating/wrapping carbon layer on the electrochemical performance of the Si/C composite anode in lithium ion batteries (LIBs) hasn't been actively explored although Si/C has been recognized as one of the most promising route for the high energy density LIBs. Herein we propose a novel nitrogen-plasma doping route to modify the top carbon film in an elaborately constructed layered Si/C composite anode. The electrochemical performance, e.g., the initial coulombic efficiency (CE), cycle stability and specific capacity of the composite anode is drastically improved by this plasma processing due to the increased kinetics of lithium ions. By means of the appropriate adjustment of the N doping ratio and N chemical configuration in the carbon layer through a N2/H2 plasma processing, the lithium diffusion rate in the composite anode was memorably increased as the pseudocapacitance effects promoted. The optimized Si/C composite exhibits a high capacity of 1120.7 mA h g-1 and an initial CE of 80.8% at the current of 2 A g-1 after a long cycle of 1500, increasing by ~40% of specific capacity and ~29% of the initial CE.
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Affiliation(s)
- Z D Zhang
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - H P Zhou
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China; Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou 313001, China.
| | - W D Xue
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - R Zhao
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - W J Wang
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - T T Feng
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China; Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou 313001, China
| | - Z Q Xu
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China; Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou 313001, China
| | - S Zhang
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China; Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou 313001, China
| | - J X Liao
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - M Q Wu
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China; Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou 313001, China.
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Abstract
AI techniques are pervading the medical field and facilitating the related educational applications, such as computer aided medical diagnosis, online surgery platforms and medical learning environments. Nowadays daily medical images and data come into being the big medical data need
be processed as fast as possible. AI enables human to improve the accuracy and efficiency of diagnosis greatly relying on the techniques of radiological images analysis. In this paper one 7-layer deep Convolutional Neural Network (CNN) is designed to classify renal lesion in kidney Computed
Tomography (CT) images. The CNN is trained on a middle-size dataset with 614 kidney CT images collected from real clinical data. Experiments show the mean and standard deviation of the overall accuracy of the binary classification reaches 90.36 ±1.02%. It has greatly better performance
about 25% than the traditional Probability Neural Network (PNN) method with predefined features. The optimal structure of this CNN proves our method is rather promising to help doctors make medical diagnosis.
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Affiliation(s)
- Li-Ying Wang
- Department of Educational Technology, Nanjing Normal University, Nanjing 210097, Jiangsu, China
| | - Zhi-Qiang Xu
- Unit of Urology, Tongliao Hospital of Inner Mongolia 028000, China
| | - Yu-Dong Zhang
- School of Informatics, University of Leicester, Leicester, LE1 7RH, UK
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30
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Chen HM, Fu ZH, Deng DF, Huang JZ, Zhang X, Xu ZQ, Wang YD. [The safety and efficacy of combined hepatic artery resection in treatment of hilar cholangiocarcinoma: a meta-analysis]. Zhonghua Yi Xue Za Zhi 2021; 101:286-292. [PMID: 33486939 DOI: 10.3760/cma.j.cn.cn112137-20200619-01891] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Objective: To evaluate the safety and effectiveness of combined hepatic artery resection for the treatment of hilar cholangiocarcinoma. Methods: We searched Pubmed, The Cochrane Library, Embase, Web of Science, China Knowledge Network, Wanfang Data Resource System, Vip-Chinese Sci-tech Journal System Database, and China Biomedical Literature Database, and collected the randomized controlled studies or retrospective studies on the safety and efficacy of combined hepatic artery resection and non-hepatic artery resection in the treatment of hilar cholangiocarcinoma. The search period is from January 1, 2006 to December 31, 2019. Review Manager 5.3 software was used to analyze the extracted data indicators. Results: A total of 14 articles were collected, and a total of 2 374 patients with hilar cholangiocarcinoma were included in the study. Meta-analysis results showed that the perioperative mortality in the hepatic artery resection (HAR) group was higher than that of the control group (OR=1.70, 95%CI=0.02-2.90, P=0.05), and the total postoperative morbidity rate was higher than that of the control group (OR=1.28, 95%CI= 0.93-1.76, P=0.13), both of which were not statistically significant compared with the control group. Subgroup analysis showed that the incidence of liver failure (OR=1.15, 95%CI= 0.73-1.82, P=0.54), biliary fistula (OR=1.20, 95%CI= 0.78-1.84, P=0.40), and abdominal infection in the two groups (OR=0.98, 95%CI= 0.53-1.83, P=0.95) was without significant difference. The R0 resection rate of the HAR group was higher than that of the control group, and the difference was not statistically significant (OR=1.08, 95%CI=0.66-1.75, P=0.77). The rates of lymph node metastasis in the HAR group were higher than that in the control group (OR= 2.48, 95%CI= 1.05-5.84, P=0.04). One-year(OR=0.48, 95%CI= 0.32-0.72, P=0.000 5), 3-year (OR= 0.51, 95%CI=0.36-0.72, P=0.000 1), and 5-year (OR=0.50, 95%CI=0.35-0.70, P<0.000 1) survival rates of HAR group were lower than those of the control group. The survival rates of patients in HAR group treated with combined chemotherapy drugs after operation were significantly improved (OR= 7.33, P=0.02). Conclusions: The safety of combined HAR treatment for hilar cholangiocarcinoma is acceptable, but poor postoperative survival may be related to the high lymph node metastasis rate. Therefore, it is still necessary to be cautious in carrying out this operation. Combined with adjuvant chemotherapy after surgery may improve survival.
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Affiliation(s)
- H M Chen
- Department of Hepatobiliary Surgery, Zhengzhou University People's Hospital (Henan Provincial People's Hospital), Zhengzhou University, Zhengzhou 450003, China
| | - Z H Fu
- Department of Hepatobiliary Surgery, Zhengzhou University People's Hospital (Henan Provincial People's Hospital), Zhengzhou University, Zhengzhou 450003, China
| | - D F Deng
- Department of Hepatobiliary Surgery, Zhengzhou University People's Hospital (Henan Provincial People's Hospital), Zhengzhou University, Zhengzhou 450003, China
| | - J Z Huang
- Department of Hepatobiliary Surgery, Zhengzhou University People's Hospital (Henan Provincial People's Hospital), Zhengzhou University, Zhengzhou 450003, China
| | - X Zhang
- Department of Hepatobiliary Surgery, Zhengzhou University People's Hospital (Henan Provincial People's Hospital), Zhengzhou University, Zhengzhou 450003, China
| | - Z Q Xu
- Department of Hepatobiliary Surgery, Zhengzhou University People's Hospital (Henan Provincial People's Hospital), Zhengzhou University, Zhengzhou 450003, China
| | - Y D Wang
- Department of Hepatobiliary Surgery, Zhengzhou University People's Hospital (Henan Provincial People's Hospital), Zhengzhou University, Zhengzhou 450003, China
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Liu YH, Wang J, Li QX, Fowler CJ, Zeng F, Deng J, Xu ZQ, Zhou HD, Doecke JD, Villemagne VL, Lim YY, Masters CL, Wang YJ. Association of naturally occurring antibodies to β-amyloid with cognitive decline and cerebral amyloidosis in Alzheimer's disease. Sci Adv 2021; 7:7/1/eabb0457. [PMID: 33523832 PMCID: PMC7775771 DOI: 10.1126/sciadv.abb0457] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Accepted: 11/05/2020] [Indexed: 05/03/2023]
Abstract
The pathological relevance of naturally occurring antibodies to β-amyloid (NAbs-Aβ) in Alzheimer's disease (AD) remains unclear. We aimed to investigate their levels and associations with Aβ burden and cognitive decline in AD in a cross-sectional cohort from China and a longitudinal cohort from the Australian Imaging, Biomarkers and Lifestyle (AIBL) study. NAbs-Aβ levels in plasma and cerebrospinal fluid (CSF) were tested according to their epitopes. Levels of NAbs targeting the amino terminus of Aβ increased, and those targeting the mid-domain of Aβ decreased in both CSF and plasma in AD patients. Higher plasma levels of NAbs targeting the amino terminus of Aβ and lower plasma levels of NAbs targeting the mid-domain of Aβ were associated with higher brain amyloidosis at baseline and faster cognitive decline during follow-up. Our findings suggest a dynamic response of the adaptive immune system in the progression of AD and are relevant to current passive immunotherapeutic strategies.
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Affiliation(s)
- Yu-Hui Liu
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Jun Wang
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Qiao-Xin Li
- The Florey Institute, The University of Melbourne, Parkville, Victoria, Australia
| | - Christopher J Fowler
- The Florey Institute, The University of Melbourne, Parkville, Victoria, Australia
| | - Fan Zeng
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Juan Deng
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Zhi-Qiang Xu
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Hua-Dong Zhou
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - James D Doecke
- The Australian E-Health Research Centre, CSIRO, Herston, Queensland, Australia
| | - Victor L Villemagne
- Department of Medicine, The University of Melbourne, Parkville, Victoria, Australia
- Department of Molecular Imaging and Therapy, Austin Health, Heidelberg, Victoria, Australia
| | - Yen Ying Lim
- The Florey Institute, The University of Melbourne, Parkville, Victoria, Australia
| | - Colin L Masters
- The Florey Institute, The University of Melbourne, Parkville, Victoria, Australia.
| | - Yan-Jiang Wang
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China.
- Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
- Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai 200031, China
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32
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Tian DY, Wang J, Sun BL, Wang Z, Xu W, Chen Y, Shen YY, Li HY, Chen DW, Zhou FY, Yi X, Zeng GH, Xu ZQ, Chen LY, Yu JT, Wang YJ. Spicy food consumption is associated with cognition and cerebrospinal fluid biomarkers of Alzheimer disease. Chin Med J (Engl) 2020; 134:173-177. [PMID: 33443937 PMCID: PMC7817283 DOI: 10.1097/cm9.0000000000001318] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Recent studies suggest that a healthy diet helps to prevent the development of Alzheimer disease (AD). This study aimed to investigate whether spicy food consumption is associated with cognition and cerebrospinal fluid (CSF) biomarkers of AD in the Chinese population. METHODS We enrolled 55 AD patients and 55 age- and gender-matched cognitively normal (CN) subjects in a case-control study, as well as a cohort of 131 participants without subjective cognitive decline (non-AD) in a cross-sectional study. Spicy food consumption was assessed using the Food Frequency Questionnaire (FFQ). Associations of FFQ scores with cognition and CSF biomarkers of AD were analyzed. RESULTS In the case-control study, spicy food consumption was lower in AD patients than that in CNs (4.0 [4.0-8.0] vs. 8.0 [4.5-10.0], P < 0.001); FFQ scores were positively associated with Mini-Mental Status Examination scores in the total sample (r = 0.218, P = 0.014). In the cross-sectional study, the association between spicy food consumption and cognition levels was verified in non-AD subjects (r = 0.264, P = 0.0023). Moreover, higher FFQ scores were significantly associated with higher β-Amyloid (1-42) (Aβ42) levels and lower phospho-tau/Aβ42 and total tau/Aβ42 ratios in the CSF of non-AD subjects (P < 0.05). CONCLUSION Spicy food consumption is closely related to higher cognition levels and reversed AD biomarkers in the CSF, suggesting that a capsaicin-rich diet might have the potential to modify the cognitive status and cerebral pathologies associated with AD.
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Affiliation(s)
- Ding-Yuan Tian
- Department of Neurology and Clinical Center for Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Jun Wang
- Department of Neurology and Clinical Center for Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Bin-Lu Sun
- Department of Neurology and Clinical Center for Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Zhen Wang
- Department of Anesthesiology, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Wei Xu
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao, Shandong 266011, China
| | - Yang Chen
- Department of Neurology and Clinical Center for Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Ying-Ying Shen
- Department of Neurology and Clinical Center for Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Hui-Yun Li
- Department of Neurology and Clinical Center for Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Dong-Wan Chen
- Department of Neurology and Clinical Center for Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Fa-Ying Zhou
- Department of Neurology and Clinical Center for Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Xu Yi
- Department of Neurology and Clinical Center for Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Gui-Hua Zeng
- Department of Neurology and Clinical Center for Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Zhi-Qiang Xu
- Department of Neurology and Clinical Center for Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Li-Yong Chen
- Department of Anesthesiology, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Jin-Tai Yu
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai 200041, China
| | - Yan-Jiang Wang
- Department of Neurology and Clinical Center for Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China
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33
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Chen SH, Tian DY, Shen YY, Cheng Y, Fan DY, Sun HL, He CY, Sun PY, Bu XL, Zeng F, Liu J, Deng J, Xu ZQ, Chen Y, Wang YJ. Amyloid-beta uptake by blood monocytes is reduced with ageing and Alzheimer's disease. Transl Psychiatry 2020; 10:423. [PMID: 33293506 PMCID: PMC7722845 DOI: 10.1038/s41398-020-01113-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 11/07/2020] [Accepted: 11/17/2020] [Indexed: 12/14/2022] Open
Abstract
Deficits in the clearance of amyloid β-protein (Aβ) play a pivotal role in the pathogenesis of sporadic Alzheimer's disease (AD). The roles of blood monocytes in the development of AD remain unclear. In this study, we sought to investigate the alterations in the Aβ phagocytosis function of peripheral monocytes during ageing and in AD patients. A total of 104 cognitively normal participants aged 22-89 years, 24 AD patients, 25 age- and sex-matched cognitively normal (CN) subjects, 15 Parkinson's disease patients (PD), and 15 age- and sex-matched CN subjects were recruited. The Aβ uptake by blood monocytes was measured and its alteration during ageing and in AD patients were investigated. Aβ1-42 uptake by monocytes decreased during ageing and further decreased in AD but not in PD patients. Aβ1-42 uptake by monocytes was associated with Aβ1-42 levels in the blood. Among the Aβ uptake-related receptors and enzymes, the expression of Toll-like receptor 2 (TLR2) was reduced in monocytes from AD patients. Our findings suggest that monocytes regulate the blood levels of Aβ and might be involved in the development of AD. The recovery of the Aβ uptake function by blood monocytes represents a potential therapeutic strategy for AD.
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Affiliation(s)
- Si-Han Chen
- grid.410570.70000 0004 1760 6682Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China ,grid.410570.70000 0004 1760 6682The Institute of Brain and Intelligence, Third Military Medical University, Chongqing, China ,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Ding-Yuan Tian
- grid.410570.70000 0004 1760 6682Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China ,grid.410570.70000 0004 1760 6682The Institute of Brain and Intelligence, Third Military Medical University, Chongqing, China ,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Ying-Ying Shen
- grid.410570.70000 0004 1760 6682Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China ,grid.410570.70000 0004 1760 6682The Institute of Brain and Intelligence, Third Military Medical University, Chongqing, China ,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Yuan Cheng
- grid.410570.70000 0004 1760 6682Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China ,grid.410570.70000 0004 1760 6682The Institute of Brain and Intelligence, Third Military Medical University, Chongqing, China ,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Dong-Yu Fan
- grid.410570.70000 0004 1760 6682Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China ,grid.410570.70000 0004 1760 6682The Institute of Brain and Intelligence, Third Military Medical University, Chongqing, China ,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Hao-Lun Sun
- grid.410570.70000 0004 1760 6682Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China ,grid.410570.70000 0004 1760 6682The Institute of Brain and Intelligence, Third Military Medical University, Chongqing, China ,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Chen-Yang He
- grid.410570.70000 0004 1760 6682Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China ,grid.410570.70000 0004 1760 6682The Institute of Brain and Intelligence, Third Military Medical University, Chongqing, China ,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Pu-Yang Sun
- grid.410570.70000 0004 1760 6682Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China ,grid.410570.70000 0004 1760 6682The Institute of Brain and Intelligence, Third Military Medical University, Chongqing, China ,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Xian-Le Bu
- grid.410570.70000 0004 1760 6682Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China ,grid.410570.70000 0004 1760 6682The Institute of Brain and Intelligence, Third Military Medical University, Chongqing, China ,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Fan Zeng
- grid.410570.70000 0004 1760 6682Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China ,grid.410570.70000 0004 1760 6682The Institute of Brain and Intelligence, Third Military Medical University, Chongqing, China ,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Juan Liu
- grid.410570.70000 0004 1760 6682Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China ,grid.410570.70000 0004 1760 6682The Institute of Brain and Intelligence, Third Military Medical University, Chongqing, China ,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Juan Deng
- grid.410570.70000 0004 1760 6682Department of Health Management, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Zhi-Qiang Xu
- grid.410570.70000 0004 1760 6682Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China ,grid.410570.70000 0004 1760 6682The Institute of Brain and Intelligence, Third Military Medical University, Chongqing, China ,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Yang Chen
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China. .,The Institute of Brain and Intelligence, Third Military Medical University, Chongqing, China. .,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China.
| | - Yan-Jiang Wang
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China. .,The Institute of Brain and Intelligence, Third Military Medical University, Chongqing, China. .,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China. .,State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital, Third Military Medical University, Chongqing, China. .,Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, China.
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34
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Monachino E, Jergic S, Lewis JS, Xu ZQ, Lo ATY, O'Shea VL, Berger JM, Dixon NE, van Oijen AM. A Primase-Induced Conformational Switch Controls the Stability of the Bacterial Replisome. Mol Cell 2020; 79:140-154.e7. [PMID: 32464091 DOI: 10.1016/j.molcel.2020.04.037] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 11/06/2018] [Revised: 03/12/2020] [Accepted: 04/20/2020] [Indexed: 12/16/2022]
Abstract
Recent studies of bacterial DNA replication have led to a picture of the replisome as an entity that freely exchanges DNA polymerases and displays intermittent coupling between the helicase and polymerase(s). Challenging the textbook model of the polymerase holoenzyme acting as a stable complex coordinating the replisome, these observations suggest a role of the helicase as the central organizing hub. We show here that the molecular origin of this newly found plasticity lies in the 500-fold increase in strength of the interaction between the polymerase holoenzyme and the replicative helicase upon association of the primase with the replisome. By combining in vitro ensemble-averaged and single-molecule assays, we demonstrate that this conformational switch operates during replication and promotes recruitment of multiple holoenzymes at the fork. Our observations provide a molecular mechanism for polymerase exchange and offer a revised model for the replication reaction that emphasizes its stochasticity.
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Affiliation(s)
- Enrico Monachino
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, and Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia; Zernike Institute for Advanced Materials, University of Groningen, Groningen 9747, the Netherlands
| | - Slobodan Jergic
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, and Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia
| | - Jacob S Lewis
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, and Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia
| | - Zhi-Qiang Xu
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, and Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia
| | - Allen T Y Lo
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, and Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia
| | - Valerie L O'Shea
- Department of Biophysics and Biophysical Chemistry, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - James M Berger
- Department of Biophysics and Biophysical Chemistry, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Nicholas E Dixon
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, and Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia.
| | - Antoine M van Oijen
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, and Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia.
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35
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He M, Zhou HP, Zhang ZD, Feng TT, Yang J, Xu ZQ, Zhang S, Liao JX, Wu MQ. All in one plasma process: From the preparation of S-C composite cathode to alleviation of polysulfide shuttle in Li-S batteries. J Colloid Interface Sci 2020; 577:450-458. [PMID: 32505005 DOI: 10.1016/j.jcis.2020.05.036] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 03/10/2020] [Revised: 05/07/2020] [Accepted: 05/12/2020] [Indexed: 01/08/2023]
Abstract
Tremendous efforts have been made to improve the electrochemical performance of the lithium-sulfur batteries. However, challenges remain in achieving fast electronic and ionic transport while accommodate the significant cathode volumetric change. On the other hand, the severe capacity decay mainly attributed to polysulfide shuttle also hampers the practical applications. Here, we report a simple, low-cost, and eco-friendly method for the one-step preparation of a binder-free S-C composite cathode by plasma dissociation of CS2 containing gases at room-temperature. The key issue of polysulfide shuttle effect in Li-S batteries is also effectively resolved just by the introduction of N2 into the precursor gases. The electrode exhibits a high reversible capacity of ~600 mAh/g of the total hybrid of S + C at 100 mA/g after 100 cycles with an excellent initial coulombic efficiency of nearly 100%. The cells also demonstrate along cycle life and an extremely high capacity of ~306 mAh/g even after 300 cycles at 1 A/g with a high coulombic efficiency of about 100%. The proposed method will open the way for the plasma applications in facile preparation of Li-S batteries and the improvement of its electrochemical performance.
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Affiliation(s)
- M He
- School of Materials and Energy, University of Electronic Science and Technology of China, 2006 Xiyuan Ave, West High-Tech Zone, Chengdu, Sichuan 611731, China
| | - H P Zhou
- School of Materials and Energy, University of Electronic Science and Technology of China, 2006 Xiyuan Ave, West High-Tech Zone, Chengdu, Sichuan 611731, China.
| | - Z D Zhang
- School of Materials and Energy, University of Electronic Science and Technology of China, 2006 Xiyuan Ave, West High-Tech Zone, Chengdu, Sichuan 611731, China
| | - T T Feng
- School of Materials and Energy, University of Electronic Science and Technology of China, 2006 Xiyuan Ave, West High-Tech Zone, Chengdu, Sichuan 611731, China
| | - J Yang
- School of Materials and Energy, University of Electronic Science and Technology of China, 2006 Xiyuan Ave, West High-Tech Zone, Chengdu, Sichuan 611731, China
| | - Z Q Xu
- School of Materials and Energy, University of Electronic Science and Technology of China, 2006 Xiyuan Ave, West High-Tech Zone, Chengdu, Sichuan 611731, China
| | - S Zhang
- School of Materials and Energy, University of Electronic Science and Technology of China, 2006 Xiyuan Ave, West High-Tech Zone, Chengdu, Sichuan 611731, China
| | - J X Liao
- School of Materials and Energy, University of Electronic Science and Technology of China, 2006 Xiyuan Ave, West High-Tech Zone, Chengdu, Sichuan 611731, China
| | - M Q Wu
- School of Materials and Energy, University of Electronic Science and Technology of China, 2006 Xiyuan Ave, West High-Tech Zone, Chengdu, Sichuan 611731, China.
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36
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Yan QQ, Li B, Jiang WP, Xu YB, Xu ZQ, Yong GP. Reversible stimulus-responsive coordination polymers mainly involving conversion between the lone-pair–π and cation–π interactions. J COORD CHEM 2020. [DOI: 10.1080/00958972.2020.1751133] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Qing-Qing Yan
- Department of Chemistry, University of Science and Technology of China, Hefei, P. R. China
| | - Bin Li
- Department of Chemistry, University of Science and Technology of China, Hefei, P. R. China
| | - Wei-Peng Jiang
- Department of Chemistry, University of Science and Technology of China, Hefei, P. R. China
| | - Ying-Bo Xu
- The USTC-Anhui Tobacco Joint Laboratory of Chemistry and Combustion, Hefei, P. R. China
| | - Zhi-Qiang Xu
- The USTC-Anhui Tobacco Joint Laboratory of Chemistry and Combustion, Hefei, P. R. China
| | - Guo-Ping Yong
- Department of Chemistry, University of Science and Technology of China, Hefei, P. R. China
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37
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Xu ZQ, Zeng XF, Lai YZ, Chen J. [Effects of titania nanotubes with different diameters on human gingival fibroblast]. Zhonghua Kou Qiang Yi Xue Za Zhi 2020; 55:253-258. [PMID: 32268625 DOI: 10.3760/cma.j.cn112144-20191120-00417] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To study the effects of titania nanotubes with three different diameters on human gingival fibroblast (HGF). Methods: Three groups of specimens were prepared. Titania nanotubes with diameters of 30, 100, and 200 nm were synthesized on titanium surfaces through electrochemical anodization at 10, 30, and 60 V, respectively. Specimens were assigned into the three groups according to the diameter of the titania nanotubes. Pure smooth titanium without any treatment was set as the control group. HGF were seeded on the surface of the samples. The cell morphology on the specimens was observed with immunofluorescence staining after 2 h, the cell adhesion after 2 d and cell proliferation after 1, 3, and 7 d were detected using methyl thiazolyl tetrazolium assay, and the secretion of type Ⅰ collagen after 7 d was determined using enzyme-linked immunosorbent assay (each group has three samples for each experiment). Results: HGF on the control group exhibited an oval shape without noticeable extensions. HGF on titania nanotubes with a diameter of 30 nm and titania nanotubes with a diameter of 100 nm elongated further and were arranged orderly. HGF on titania nanotubes with a diameter of 200 nm were sparsely distributed without noticeable extensions. Titania nanotubes with a diameter of 30 nm and titania nanotubes with a diameter of 100 nm could enhance the cell attachment (0.603±0.021 and 0.773±0.045), and secretion of type Ⅰ collagen [(36.5±9.5) and (47.7±4.5) μg/ml, respectively] compared with the control group whose cell attactment was 0.427±0.057, and secretion of type Ⅰ collagen was (22.2±5.9) μg/ml (P<0.05). Furthermore, titania nanotubes with a diameter of 100 nm showed more cell attchment than titania nanotubes with a diameter of 30 nm did (P<0.05). Ttania nanotubes with a diameter of 200 nm clearly impaired the cell adhesion (0.250±0.046) and secretion of type Ⅰ collagen [(10.1±3.7) μg/ml] compared with the control group (P<0.05). At each time point, titania nanotubes with a diameter of 100 nm showed the highest cell proliferation, and the amount of cell proliferation was significantly higher than that on the titania nanotubes with a diameter of 200 nm and the control group at each time point (P<0.05), and was also significantly higher than that on the titania nanotubes with a diameter of 30 nm at day three (P<0.05). At each time point, titania nanotubes with a diameter of 200 nm showed the lowest cell proliferation, which was significantly lower than that on the control group at each time point (P<0.05), except that there was no significant difference in the amount of cell proliferation between titania nanotubes with a diameter of 200 nm and the control group at day one (P>0.05). Conclusions: Titania nanotubes with a diameter of 100 nm can improve the HGF attachment, proliferation, and secretion of type Ⅰ collagen.
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Affiliation(s)
- Z Q Xu
- Department of Stomatology, Affiliated Hospital of Putian University, Putian 351100, China
| | - X F Zeng
- Hanjiang Zeng Xiufeng Dental Clinic, Putian 351117, China
| | - Y Z Lai
- Department of Stomatology, Xiamen Medical College & Engineering Research Center of Fujian University of Stomatological Biomaterials, Xiamen 361023, China
| | - J Chen
- Department of Oral Implantology, Affiliated Stomatological Hospital, Fujian Medical University, Fuzhou 350004, China
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38
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Li WW, Wang Z, Fan DY, Shen YY, Chen DW, Li HY, Li L, Yang H, Liu YH, Bu XL, Jin WS, Zeng F, Xu ZQ, Yu JT, Chen LY, Wang YJ. Association of Polygenic Risk Score with Age at Onset and Cerebrospinal Fluid Biomarkers of Alzheimer's Disease in a Chinese Cohort. Neurosci Bull 2020; 36:696-704. [PMID: 32072450 DOI: 10.1007/s12264-020-00469-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [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: 08/08/2019] [Accepted: 12/25/2019] [Indexed: 02/06/2023] Open
Abstract
To evaluate whether the polygenic profile modifies the development of sporadic Alzheimer's disease (sAD) and pathological biomarkers in cerebrospinal fluid (CSF), 462 sAD patients and 463 age-matched cognitively normal (CN) controls were genotyped for 35 single-nucleotide polymorphisms (SNPs) that are significantly associated with sAD. Then, the alleles found to be associated with sAD were used to build polygenic risk score (PRS) models to represent the genetic risk. Receiver operating characteristic (ROC) analyses and the Cox proportional hazards model were used to evaluate the predictive value of PRS for the sAD risk and age at onset. We measured the CSF levels of Aβ42, Aβ42/Aβ40, total tau (T-tau), and phosphorylated tau (P-tau) in a subgroup (60 sAD and 200 CN participants), and analyzed their relationships with the PRSs. We found that 14 SNPs, including SNPs in the APOE, BIN1, CD33, EPHA1, SORL1, and TOMM40 genes, were associated with sAD risk in our cohort. The PRS models built with these SNPs showed potential for discriminating sAD patients from CN controls, and were able to predict the incidence rate of sAD and age at onset. Furthermore, the PRSs were correlated with the CSF levels of Aβ42, Aβ42/Aβ40, T-tau, and P-tau. Our study suggests that PRS models hold promise for assessing the genetic risk and development of AD. As genetic risk profiles vary among populations, large-scale genome-wide sequencing studies are urgently needed to identify the genetic risk loci of sAD in Chinese populations to build accurate PRS models for clinical practice.
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Affiliation(s)
- Wei-Wei Li
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Zhen Wang
- Department of Anaesthesiology, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Dong-Yu Fan
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Ying-Ying Shen
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Dong-Wan Chen
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Hui-Yun Li
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Ling Li
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Heng Yang
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Yu-Hui Liu
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Xian-Le Bu
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Wang-Sheng Jin
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Fan Zeng
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Zhi-Qiang Xu
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Jin-Tai Yu
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Li-Yong Chen
- Department of Anaesthesiology, Daping Hospital, Third Military Medical University, Chongqing, 400042, China.
| | - Yan-Jiang Wang
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China. .,Chongqing Key Laboratory of Aging and Diseases, Chongqing, 400042, China. .,Centre for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, 200031, China.
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39
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Xiao T, Tang JF, Meng G, Pannecouque C, Zhu YY, Liu GY, Xu ZQ, Wu FS, Gu SX, Chen FE. Indazolyl-substituted piperidin-4-yl-aminopyrimidines as HIV-1 NNRTIs: Design, synthesis and biological activities. Eur J Med Chem 2020; 186:111864. [DOI: 10.1016/j.ejmech.2019.111864] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 10/25/2019] [Accepted: 11/06/2019] [Indexed: 11/25/2022]
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40
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Li B, Yan QQ, Xu ZQ, Xu YB, Yong GP. Tuning the interpenetration of metal–organic frameworks through changing ligand functionality: effect on gas adsorption properties. CrystEngComm 2020. [DOI: 10.1039/c9ce01309a] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two interpenetrated MOFs are constructed with a 2-connected ligand, whereas one non-interpenetrated MOF is constructed by using a 3-connected ligand.
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Affiliation(s)
- Bin Li
- Department of Chemistry
- University of Science and Technology of China
- Hefei 230026
- P. R. China
| | - Qing-Qing Yan
- Department of Chemistry
- University of Science and Technology of China
- Hefei 230026
- P. R. China
| | - Zhi-Qiang Xu
- The USTC-Anhui Tobacco Joint Laboratory of Chemistry and Combustion
- Hefei 230066
- P. R. China
| | - Ying-Bo Xu
- The USTC-Anhui Tobacco Joint Laboratory of Chemistry and Combustion
- Hefei 230066
- P. R. China
| | - Guo-Ping Yong
- Department of Chemistry
- University of Science and Technology of China
- Hefei 230026
- P. R. China
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41
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Shen LL, Li WW, Xu YL, Gao SH, Xu MY, Bu XL, Liu YH, Wang J, Zhu J, Zeng F, Yao XQ, Gao CY, Xu ZQ, Zhou XF, Wang YJ. Neurotrophin receptor p75 mediates amyloid β-induced tau pathology. Neurobiol Dis 2019; 132:104567. [PMID: 31394202 DOI: 10.1016/j.nbd.2019.104567] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [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: 03/02/2019] [Revised: 06/10/2019] [Accepted: 08/02/2019] [Indexed: 01/05/2023] Open
Abstract
Neurofibrillary tangles of hyperphosphorylated tau protein (p-tau) are a key pathological feature of Alzheimer's disease (AD). Tau phosphorylation is suggested to be secondary to amyloid-beta (Aβ) accumulation. However, the mechanism by which Aβ induces tau phosphorylation in neurons remains unclear. Neurotrophin receptor p75 (p75NTR) is a receptor for Aβ and mediates Aβ neurotoxicity, implying that p75NTR may mediate Aβ-induced tau phosphorylation in AD. Here, we showed that Aβ-induced tau hyperphosphorylation and neurodegeneration, including tau phosphorylation, synaptic disorder and neuronal loss, in the brains of both male wild-type (Wt) mice and male P301L transgenic mice (a mouse model of human tauopathy) were alleviated by genetic knockout of p75NTR in the both mouse models. We further confirmed that the activation or inhibition of cyclin-dependent kinase 5 (CDK5) and glycogen synthase kinase-3β (GSK3β) significantly changed Aβ/p75NTR-mediated p-tau levels in neurons. Treatment of male P301L mice with soluble p75NTR extracellular domain (p75ECD-Fc), which antagonizes the binding of Aβ to p75NTR, suppressed tau hyperphosphorylation. Taken together, our findings suggest that p75NTR meditates Aβ-induced tau pathology and is a potential druggable target for AD and other tauopathies.
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Affiliation(s)
- Lin-Lin Shen
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China; Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing 400042, China; Shigatse Branch, Xinqiao Hospital, Third Military Medical University, Shigatse 857000, China
| | - Wei-Wei Li
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China; Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing 400042, China
| | - Ya-Li Xu
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China; Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing 400042, China
| | - Shi-Hao Gao
- Shigatse Branch, Xinqiao Hospital, Third Military Medical University, Shigatse 857000, China
| | - Man-Yu Xu
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China; Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing 400042, China
| | - Xian-Le Bu
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China; Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing 400042, China
| | - Yu-Hui Liu
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China; Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing 400042, China
| | - Jun Wang
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China; Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing 400042, China
| | - Jie Zhu
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China; Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing 400042, China
| | - Fan Zeng
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China; Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing 400042, China
| | - Xiu-Qing Yao
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China; Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing 400042, China
| | - Chang-Yue Gao
- Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing 400042, China; Department of Rehabilitation, Daping Hospital, Third Military Medical University, Chongqing 400042, China
| | - Zhi-Qiang Xu
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China; Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing 400042, China
| | - Xin-Fu Zhou
- School of Pharmacy and Medical Sciences and Sansom Institute, Division of Health Sciences, University of South Australia, Adelaide 5001, Australia
| | - Yan-Jiang Wang
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400042, China; Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing 400042, China; State Key Laboratory of Trauma, Burn and Combined Injury, Third Military Medical University, Chongqing 400042, China; Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, China.
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42
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Spenkelink LM, Lewis JS, Jergic S, Xu ZQ, Robinson A, Dixon NE, van Oijen AM. Recycling of single-stranded DNA-binding protein by the bacterial replisome. Nucleic Acids Res 2019; 47:4111-4123. [PMID: 30767010 PMCID: PMC6486552 DOI: 10.1093/nar/gkz090] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 01/30/2019] [Accepted: 02/09/2019] [Indexed: 02/06/2023] Open
Abstract
Single-stranded DNA-binding proteins (SSBs) support DNA replication by protecting single-stranded DNA from nucleolytic attack, preventing intra-strand pairing events and playing many other regulatory roles within the replisome. Recent developments in single-molecule approaches have led to a revised picture of the replisome that is much more complex in how it retains or recycles protein components. Here, we visualize how an in vitro reconstituted Escherichia coli replisome recruits SSB by relying on two different molecular mechanisms. Not only does it recruit new SSB molecules from solution to coat newly formed single-stranded DNA on the lagging strand, but it also internally recycles SSB from one Okazaki fragment to the next. We show that this internal transfer mechanism is balanced against recruitment from solution in a manner that is concentration dependent. By visualizing SSB dynamics in live cells, we show that both internal transfer and external exchange mechanisms are physiologically relevant.
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Affiliation(s)
- Lisanne M Spenkelink
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia.,Illawarra Health and Medical Research Institute, Wollongong, New South Wales 2522, Australia.,Zernike Institute for Advanced Materials, University of Groningen, Groningen, 9747 AG, the Netherlands
| | - Jacob S Lewis
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia.,Illawarra Health and Medical Research Institute, Wollongong, New South Wales 2522, Australia
| | - Slobodan Jergic
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia.,Illawarra Health and Medical Research Institute, Wollongong, New South Wales 2522, Australia
| | - Zhi-Qiang Xu
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia.,Illawarra Health and Medical Research Institute, Wollongong, New South Wales 2522, Australia
| | - Andrew Robinson
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia.,Illawarra Health and Medical Research Institute, Wollongong, New South Wales 2522, Australia
| | - Nicholas E Dixon
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia.,Illawarra Health and Medical Research Institute, Wollongong, New South Wales 2522, Australia
| | - Antoine M van Oijen
- Molecular Horizons and School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, New South Wales 2522, Australia.,Illawarra Health and Medical Research Institute, Wollongong, New South Wales 2522, Australia
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43
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Li WW, Fan DY, Shen YY, Zhou FY, Chen Y, Wang YR, Yang H, Mei J, Li L, Xu ZQ, Wang YJ. Association of the Polygenic Risk Score with the Incidence Risk of Parkinson's Disease and Cerebrospinal Fluid α-Synuclein in a Chinese Cohort. Neurotox Res 2019; 36:515-522. [PMID: 31209785 DOI: 10.1007/s12640-019-00066-2] [Citation(s) in RCA: 5] [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: 02/27/2019] [Revised: 04/15/2019] [Accepted: 05/13/2019] [Indexed: 12/16/2022]
Abstract
Parkinson's disease (PD) is attributed to interactions among genes and environmental and lifestyle factors, but the genetic architecture of PD is complex and not completely understood. To evaluate whether the genetic profile modifies PD development and cerebrospinal fluid (CSF) pathological biomarkers, we enrolled 418 PD patients and 426 age- and sex-matched normal controls. Forty-six single nucleotide polymorphisms (SNPs) that were reported to be significantly associated with PD in large-scale genome-wide association studies (GWASs) were genotyped and analysed. The alleles associated with PD were used to build polygenic risk score (PRS) models to represent polygenic risk. The Cox proportional hazards model and receiver operating characteristic (ROC) analyses were used to evaluate the prediction value of the PRS for PD risk and age at onset. The CSF α-synuclein levels were measured in a subgroup of control subjects (n = 262), and its relationship with the PRS was analysed. We found that some SNPs identified from other populations had significant correlations with PD in our Chinese cohort. The PRS we built had prediction value for PD risk and age at onset. The CSF α-synuclein level had no correlation with the PRS in normal subjects.
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Affiliation(s)
- Wei-Wei Li
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Dong-Yu Fan
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Ying-Ying Shen
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Fa-Ying Zhou
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Yang Chen
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Ye-Ran Wang
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Heng Yang
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Jing Mei
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Ling Li
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Zhi-Qiang Xu
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China.
| | - Yan-Jiang Wang
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China. .,State Key Laboratory of Trauma, Burn and Combined Injury, Third Military Medical University, Chongqing, China. .,Centre for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Science, Beijing, China.
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Li W, Wu Y, Li XS, Liu CC, Huang SH, Liang CR, Wang H, Zhang LL, Xu ZQ, Wang YJ, Zhang M. Intravenous tirofiban therapy for patients with capsular warning syndrome. Stroke Vasc Neurol 2019; 4:22-27. [PMID: 31105975 PMCID: PMC6475082 DOI: 10.1136/svn-2018-000163] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 10/23/2018] [Accepted: 11/05/2018] [Indexed: 12/12/2022] Open
Abstract
Background Capsular warning syndrome (CWS) is defined as recurrent episodes of transient ischaemic attacks ≥3 times during a short time frame. There is no effective therapy to stop these attacks. We, herein, report our experience of using intravenous tirofiban to treat CWS. Methods All patients with CWS in our hospital from January 2013 to September 2017 were reviewed. Patients in tirofiban group (T-group) were treated by intravenous tirofiban at 0.4 μg/kg/min for 30 min followed by 0.1–0.15 µg/kg/min infusion. Other treatments (non-T-group) included thrombolytic, oral antiplatelet agents and anticoagulant. Intracerebral haemorrhage (ICH), systematic bleeding, new attacks after treatment, National Institutes of Health Stroke Scale (NIHSS) scores at 24 hours and modified Rankin Scales (mRSs) at 3 months were recorded. Descriptive statistics were used for analysis. Results Of 23 patients qualified (15 in T-group, 8 in non-T-group), the duration of symptoms ranged from 2 to 100 min before treatments. After treatment, in T-group, four patients (26.7%) had recurrent attacks, and NIHSS scores were 0 in 11 patients (73.3%) at 24 hours. All patients reached a favourable outcome (mRS ≤2 at 3 months. In non-T-group, five patients (62.5%) had new attacks. NIHSS scores were 0 in two patients (25%) at 24 hours. At 3 months, seven patients (87.5%) reached a favourable outcome. Neither ICH nor systematic bleeding or thrombocytopaenia occurred in both groups of patients. Conclusions Intravenous tirofiban can be a potentially effective and safe therapy to stop early symptomatic fluctuations and shorten the duration of functional deficits in patients with CWS.
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Affiliation(s)
- Wei Li
- Department of Neurology, Daping Hospital & Research Institute of Surgery, The Army Military Medical University, Chongqing, China
| | - Ya Wu
- Department of Neurology, Daping Hospital & Research Institute of Surgery, The Army Military Medical University, Chongqing, China
| | - Xiao-Shu Li
- Department of Neurology, Daping Hospital & Research Institute of Surgery, The Army Military Medical University, Chongqing, China
| | - Cheng-Chun Liu
- Department of Neurology, Daping Hospital & Research Institute of Surgery, The Army Military Medical University, Chongqing, China
| | - Shu-Han Huang
- Department of Neurology, Daping Hospital & Research Institute of Surgery, The Army Military Medical University, Chongqing, China
| | - Chun-Rong Liang
- Department of Neurology, Daping Hospital & Research Institute of Surgery, The Army Military Medical University, Chongqing, China
| | - Huan Wang
- Department of Neurology, Daping Hospital & Research Institute of Surgery, The Army Military Medical University, Chongqing, China
| | - Li-Li Zhang
- Department of Neurology, Daping Hospital & Research Institute of Surgery, The Army Military Medical University, Chongqing, China
| | - Zhi-Qiang Xu
- Department of Neurology, Daping Hospital & Research Institute of Surgery, The Army Military Medical University, Chongqing, China
| | - Yan-Jiang Wang
- Department of Neurology, Daping Hospital & Research Institute of Surgery, The Army Military Medical University, Chongqing, China
| | - Meng Zhang
- Department of Neurology, Daping Hospital & Research Institute of Surgery, The Army Military Medical University, Chongqing, China
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Xu ZQ, Wang YD, Zhang X, Deng DF, Fu ZH, Huang JZ, Cai JP. [The effect of estrogen level on Budd Chiari syndrome related hepatocellular carcinoma]. Zhonghua Yi Xue Za Zhi 2019; 99:1241-1245. [PMID: 31060164 DOI: 10.3760/cma.j.issn.0376-2491.2019.16.010] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the effect of estrogen level on Budd Chiari syndrome related hepatocellular carcinoma. Methods: Immunohistochemical method was used to detect estrogen receptor-α and estrogen receptor-β expression in 38 cases of Budd Chiari syndrome related hepatocellular carcinoma and 50 cases of HBV related hepatocellular carcinoma.Hepatoma cells of Budd Chiari syndrome related hepatocellular carcinoma were exposed to different concentrations of Estrogen for 48 hours. Tetrazolium bromide (MTT) colorimetry was used to analyze cell proliferation activities; cell cycle was analyzed by flow cytometry (FCM); cell apoptosis was analyzed by flow cytometry (FCM) and Casepase-3 activity was measured after induced by adriamycin(ADM). Results: The positive rate of estrogen receptor-α expression in the tissues of Budd Chiari syndrome related hepatocellular carcinoma was 71.05%, which was higher than that (32%)in HBV related hepatocellular carcinoma tissue evidently (P<0.01). The positive rate of estrogen receptor-β expression in the tissues of Budd Chiari syndrome related hepatocellular carcinoma was 68.4%, which was higher than that (26%)in HBV related hepatocellular carcinoma tissue evidently (P<0.01). With the concentrations of estrogen increasing, MTT Assays showed that estrogen level increased the cell proliferation activities of Budd Chiari syndrome related hepatocellular carcinoma. The number of cells at stage S and G2/M were significantly increased and cells at stage G0/G1 were reduced with the increasing concentrations of estrogen. After being incubated under the different concentrations of estrogen for 48 h, the apoptosis rates decreased gradually and the Casepase-3 activity was significantly reduced with the increasing concentration of estrogen. Conclusions: Estrogenreceptor expression may have an important influence on hepatocellular carcinoma cell biology difference between Budd Chiari syndrome related hepatocellular carcinoma and HBV related hepatocellular carcinoma. Estrogen level can promote cell proliferation and cell cycle, and inhibit the apoptosis of hepatoma cells of Budd Chiari syndrome related hepatocellular carcinoma in vitro, and these effects were increased with the increasing of estrogen level.
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Affiliation(s)
- Z Q Xu
- Hepatobiliary Surgery, Zhengzhou University People's Hospital, Zhengzhou 450003, China
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Xu Y, Li WW, Wang J, Zhu C, Shen YY, Shi AY, Zeng GH, Xu ZQ, Zhou XF, Wang YJ. Neurotrophin Receptor p75 mRNA Level in Peripheral Blood Cells of Patients with Alzheimer's Disease. Neurotox Res 2019; 36:101-107. [PMID: 30977102 DOI: 10.1007/s12640-019-00035-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 10/02/2018] [Revised: 02/11/2019] [Accepted: 03/29/2019] [Indexed: 11/28/2022]
Abstract
The neurotrophin receptor p75 (p75NTR) plays important roles in regulating amyloid-beta (Aβ) metabolism in the brain. The expression of p75NTR is altered in the brain of patients with Alzheimer's disease (AD). In this study, we aimed to evaluate whether p75NTR mRNA level in the peripheral blood cells is changed among AD patients and its potential to be a biomarker for AD. The study subjects included 26 patients with AD (PiB-PET positive) and 28 cognitively normal controls (PiB-PET negative). RNA was extracted from peripheral blood cells of fast blood. p75NTR mRNA was measured using quantitative real-time PCR assay. p75NTR mRNA levels in blood cells were comparable between AD patients and controls. p75NTR mRNA levels in blood cells were not correlated with MMSE scores, ApoE genotypes, gender, and age. p75NTR mRNA expression in blood cells is not changed in AD patients and is unlikely to be a biomarker for AD.
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Affiliation(s)
- Yali Xu
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China.,Department of Geriatrics, Chongqing General Hospital, University of Chinese Academy of Sciences, Chongqing, China
| | - Wei-Wei Li
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Jun Wang
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Chi Zhu
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Ying-Ying Shen
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - An-Yu Shi
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Gui-Hua Zeng
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Zhi-Qiang Xu
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Xin-Fu Zhou
- Division of Health Sciences, School of Pharmacy and Medical Sciences and Sansom Institute, University of South Australia, Adelaide, South Australia, Australia
| | - Yan-Jiang Wang
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China.
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Li WW, Shen YY, Chen DW, Li HY, Shi QQ, Mei J, Yang H, Zhou FY, Shi AY, Zhang T, Yao XQ, Xu ZQ, Zeng F, Wang YJ. Genetic Association Between NGFR, ADAM17 Gene Polymorphism, and Parkinson's Disease in the Chinese Han Population. Neurotox Res 2019; 36:463-471. [PMID: 30941646 DOI: 10.1007/s12640-019-00031-z] [Citation(s) in RCA: 5] [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: 02/13/2019] [Revised: 03/16/2019] [Accepted: 03/22/2019] [Indexed: 11/30/2022]
Abstract
Parkinson's disease (PD) is a common neurodegenerative disease characterized by neuronal loss in the substantia nigra. The p75 neurotrophin receptor (p75NTR, encoded by NGFR) was found to play an important role in the selective neuronal death of dopamine neurons in the substantia nigra, as well as the pathogenesis and development of PD. To assess the association between NGFR gene polymorphism and the susceptibility of PD, this case-control study consisting of 414 PD patients and 623 age- and sex-matched controls in a Chinese Han cohort was conducted. Twelve tag-single nucleotide polymorphisms (tag-SNPs) were selected from the NGFR gene through the construction of linkage disequilibrium blocks. One tag-SNP from the ADAM17 gene was also selected owing to its function of encoding tumor necrosis factor α-converting enzyme, which is responsible for the shedding of the extracellular domain of p75NTR. A multiplex polymerase chain reaction-ligase detection reaction (PCR-LDR) method was applied for genotyping. The associations between tag-SNPs and the risk of PD with the adjustment for age and sex were analyzed by unconditional logistic regression, and five genetic models including codominant, dominant, recessive, over-dominant, and additive models were applied. The results showed that among the 13 tag-SNPs, rs741073 was associated with a reduced risk of PD in the codominant (OR = 0.71, 95% CI = 0.54-0.93, P = 0.037), dominant (OR = 0.76, 95% CI = 0.58-0.98, P = 0.033), and over-dominant models (OR = 0.71, 95% CI = 0.54-0.92, P = 0.010), and rs1804011 was also associated with a reduced risk of PD in the codominant (OR = 0.69, 95% CI = 0.50-0.95, P = 0.049), dominant (OR = 0.69, 95% CI = 0.50-0.93, P = 0.014), over-dominant (OR = 0.70, 95% CI = 0.51-0.96, P = 0.025), and additive models (OR = 0.72, 95% CI = 0.54-0.94, P = 0.016). However, these associations did not retain after Bonferroni correction. Conclusively, our study failed to reveal the association between the selected tag-SNPs within NGFR, ADAM17, and the susceptibility of PD. The role of p75NTR and its gene polymorphisms in the pathogenesis of PD needs to be further studied.
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Affiliation(s)
- Wei-Wei Li
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Ying-Ying Shen
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Dong-Wan Chen
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Hui-Yun Li
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Qian-Qian Shi
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Jing Mei
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Heng Yang
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Fa-Ying Zhou
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - An-Yu Shi
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Tao Zhang
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Xiu-Qing Yao
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Zhi-Qiang Xu
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Fan Zeng
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China.
| | - Yan-Jiang Wang
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
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Li B, Xu ZQ, Xu YB, Yong GP. Effects of substituent groups on the crystal structures and luminescence properties of zero-/two-dimensional Zn(II) complexes. INORG CHEM COMMUN 2019. [DOI: 10.1016/j.inoche.2019.01.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Sun HL, Sun BL, Chen DW, Chen Y, Li WW, Xu MY, Shen YY, Xu ZQ, Wang YJ, Bu XL. Plasma α-synuclein levels are increased in patients with obstructive sleep apnea syndrome. Ann Clin Transl Neurol 2019; 6:788-794. [PMID: 31020003 PMCID: PMC6469340 DOI: 10.1002/acn3.756] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 02/18/2019] [Accepted: 02/20/2019] [Indexed: 12/22/2022] Open
Abstract
Objective Obstructive sleep apnea syndrome (OSAS) is characterized by nocturnal intermittent hypoxemia and can increase the risk of Parkinson's disease. This study aimed to investigate the association between plasma α‐synuclein levels and hypoxia in the patients with OSAS. Methods We recruited 42 OSAS patients and 46 controls with simple snoring matched for age and gender. OSAS was diagnosed on the basis of the clinical symptoms as well as the nighttime polysomnography. Plasma total α‐synuclein and phosphorylated α‐synuclein levels were measured by ELISA kits. Results The OSAS patients had significant higher levels of plasma total α‐synuclein and phosphorylated α‐synuclein levels. Both of the above indexes were positively correlated with the apnea–hypopnea index and the oxygen desaturation index, while they were negatively correlated with the mean and lowest oxyhemoglobin saturations. Interpretation This study suggests that chronic intermittent hypoxia can increase the α‐synuclein levels, which may contribute to the pathogenesis of Parkinson's disease.
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Affiliation(s)
- Hao-Lun Sun
- Department of Neurology and Centre for Clinical Neuroscience Daping Hospital Third Military Medical University Chongqing China
| | - Bin-Lu Sun
- Department of Neurology and Centre for Clinical Neuroscience Daping Hospital Third Military Medical University Chongqing China
| | - Dong-Wan Chen
- Department of Neurology and Centre for Clinical Neuroscience Daping Hospital Third Military Medical University Chongqing China
| | - Yang Chen
- Department of Neurology and Centre for Clinical Neuroscience Daping Hospital Third Military Medical University Chongqing China
| | - Wei-Wei Li
- Department of Neurology and Centre for Clinical Neuroscience Daping Hospital Third Military Medical University Chongqing China
| | - Man-Yu Xu
- Department of Neurology and Centre for Clinical Neuroscience Daping Hospital Third Military Medical University Chongqing China
| | - Ying-Ying Shen
- Department of Neurology and Centre for Clinical Neuroscience Daping Hospital Third Military Medical University Chongqing China
| | - Zhi-Qiang Xu
- Department of Neurology and Centre for Clinical Neuroscience Daping Hospital Third Military Medical University Chongqing China
| | - Yan-Jiang Wang
- Department of Neurology and Centre for Clinical Neuroscience Daping Hospital Third Military Medical University Chongqing China
| | - Xian-Le Bu
- Department of Neurology and Centre for Clinical Neuroscience Daping Hospital Third Military Medical University Chongqing China
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Hu L, Shu XP, Xu YY, Cheng J, Xu ZQ, Wang JH, Lyu F. [Clinical study on microcirculation changes of bulbar conjunctiva after contact lens wear]. Zhonghua Yan Ke Za Zhi 2019; 55:98-104. [PMID: 30772987 DOI: 10.3760/cma.j.issn.0412-4081.2019.02.006] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the changes of microcirculation of the bulbar conjunctiva after wearing the contact lens and the relationship between contact lens discomfort and bulbar conjunctiva microcirculation. Methods: Prospective cohort study. The postgraduate students from School of Ophthalmology & Optometry and School of Biomedical Engineering of Wenzhou Medical University were included in this prospective cohort study. The subjects wore soft contact lenses, and the right eye was selected as the experimental eye. The ocular surface disease index (OSDI) questionnaire, Schirmer I and tear break-up time tests were completed before and after wearing the contact lens, and the conjunctival blood flow velocity and microvascular network density were also assessed by using functional slit lamp biomicroscopy. The changes of the indicators after wearing the contact lens were observed and the correlation between the subjective feelings of the wearers and the microcirculation parameters of the bulbar conjunctiva and the main factors affecting the subjective feelings of the wearers were analyzed. Results: Twenty-seven subjects were enrolled in the study, including 8 males and 19 females, aged (22.7±1.6) years. The OSDI score was 11.860± 7.783 before wearing the contact lens and 24.017±12.181 after wearing the contact lens. The comparison before and after wearing the contact lens was statistically significant (t=-4.356, P<0.001). The conjunctival blood flow velocity was (0.534±0.132) mm/s before wearing the contact lens and (0.587±0.134) mm/s after wearing the contact lens. The comparison was statistically significant before and after wearing the lens (t=-2.076, P=0.048). OSDI was positively correlated with blood flow velocity at 1 month after wearing the contact lens (correlation coefficient r=0.383, P=0.048). The test results of the independent variables in the generalized estimating equation model showed that time and blood flow velocity were statistically significant (P<0.05). Conclusions: The blood flow velocity of the bulbar conjunctiva was increased after wearing the contact lens, and the contact lens discomfort of the wearers was positively correlated with the blood flow velocity of the bulbar conjunctiva. (Chin J Ophthalmol, 2019, 55: 98-104).
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Affiliation(s)
- L Hu
- School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou 325027, China
| | - X P Shu
- School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou 325027, China
| | - Y Y Xu
- School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou 325027, China
| | - J Cheng
- School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou 325027, China
| | - Z Q Xu
- School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou 325027, China
| | - J H Wang
- Bascom Palmer Eye Institute, University of Miami, Miami, Florida, United States
| | - F Lyu
- School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou 325027, China
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