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Hao J, Liu C, Zhang N, Li J, Ni T, Qu M, Li XD. Alternative relay regulates the adenosine triphosphatase activity of Locusta migratoria striated muscle myosin. Insect Sci 2024; 31:435-447. [PMID: 37489033 DOI: 10.1111/1744-7917.13257] [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] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 06/20/2023] [Accepted: 06/24/2023] [Indexed: 07/26/2023]
Abstract
Locust (Locusta migratoria) has a single striated muscle myosin heavy chain (Mhc) gene, which contains 5 clusters of alternative exclusive exons and 1 differently included penultimate exon. The alternative exons of Mhc gene encode 4 distinct regions in the myosin motor domain, that is, the N-terminal SH3-like domain, one lip of the nucleotide-binding pocket, the relay, and the converter. Here, we investigated the role of the alternative regions on the motor function of locust muscle myosin. Using Sf9-baculovirus protein expression system, we expressed and purified 5 isoforms of the locust muscle myosin heavy meromyosin (HMM), including the major isoform in the thorax dorsal longitudinal flight muscle (FL1) and 4 isoforms expressed in the abdominal intersegmental muscle (AB1 to AB4). Among these 5 HMMs, FL1-HMM displayed the highest level of actin-activated adenosine triphosphatase (ATPase) activity (hereafter referred as ATPase activity). To identify the alternative region(s) responsible for the elevated ATPase activity of FL1-HMM, we produced a number of chimeras of FL1-HMM and AB4-HMM. Substitution with the relay of AB4-HMM (encoded by exon-14c) substantially decreased the ATPase activity of FL1-HMM, and conversely, the relay of FL1-HMM (encoded by exon-14a) enhanced the ATPase activity of AB4-HMM. Mutagenesis showed that the exon-14a-encoded residues Gly474 and Asn509 are responsible for the elevated ATPase activity of FL1-HMM. Those results indicate that the alternative relay encoded by exon-14a/c play a key role in regulating the ATPase activity of FL1-HMM and AB4-HMM.
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Affiliation(s)
- Jie Hao
- State Key Laboratory of Integrated Management of Insect Pests and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Chang Liu
- State Key Laboratory of Integrated Management of Insect Pests and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Ning Zhang
- State Key Laboratory of Integrated Management of Insect Pests and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Jing Li
- State Key Laboratory of Integrated Management of Insect Pests and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Tong Ni
- State Key Laboratory of Integrated Management of Insect Pests and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Mingbo Qu
- School of Bioengeering, Dalian University of Technology, Dalian, China
| | - Xiang-Dong Li
- State Key Laboratory of Integrated Management of Insect Pests and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
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Zhu L, Ni T, Guan F. Methamphetamine-Induced Psychosis and Schizophrenia: A Call for Special Attention. Am J Psychiatry 2024; 181:168. [PMID: 38298079 DOI: 10.1176/appi.ajp.20230467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2024]
Affiliation(s)
- Li Zhu
- Department of Forensic Psychiatry, Key Laboratory of National Health Commission for Forensic Sciences, School of Medicine & Forensics, Xi'an Jiaotong University, Xi'an, China
| | - Tong Ni
- Department of Forensic Psychiatry, Key Laboratory of National Health Commission for Forensic Sciences, School of Medicine & Forensics, Xi'an Jiaotong University, Xi'an, China
| | - Fanglin Guan
- Department of Forensic Psychiatry, Key Laboratory of National Health Commission for Forensic Sciences, School of Medicine & Forensics, Xi'an Jiaotong University, Xi'an, China
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3
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Tang J, Zhang K, Ni T, Xu B, Hou B, Liu X, Jiang W. Multiple fluorescence and hydrogen peroxide-responsive properties of novel triphenylamine-benzothiazole derivatives. Anal Methods 2023; 15:4021-4031. [PMID: 37548508 DOI: 10.1039/d3ay01038d] [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] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
A novel fluorescent dye molecule - triphenylamine (TPA)-benzothiazole (BZT) - based on excited state intramolecular proton transfer (ESIPT) was prepared by the Suzuki coupling reaction. The photophysical property assay indicates that BZT-TPA appeared in distinguishable colors in mixed solvents with different water contents. Moreover, BZT-TPA exhibited observable AIE behavior. On this basis, a fluorescent probe BZT-TPA-BO was synthesized for detecting H2O2. This probe molecule was found to have excellent selectivity, rapid response, and good linear relationship (R2 = 0.989) for detecting H2O2 in aqueous medium. Through DFT calculation, fluorescence spectrum, nuclear magnetic titration and HR-MS, the mechanism of recognition of H2O2 by the probe BZT-TPA-BO is proposed. In addition, the probe BZT-TPA-BO to some extent exhibited better performance for detecting exogenous H2O2 in HeLa cells.
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Affiliation(s)
- Jiyu Tang
- School of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Zigong, Sichuan 643000, P. R. China.
| | - Kaiming Zhang
- School of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Zigong, Sichuan 643000, P. R. China.
- Key Laboratory of Green Catalysis of Sichuan Institute of High Education, Zigong, Sichuan 643000, P. R. China
| | - Tong Ni
- School of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Zigong, Sichuan 643000, P. R. China.
| | - Bin Xu
- School of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Zigong, Sichuan 643000, P. R. China.
- Key Laboratory of Green Catalysis of Sichuan Institute of High Education, Zigong, Sichuan 643000, P. R. China
| | - Binjie Hou
- School of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Zigong, Sichuan 643000, P. R. China.
- Key Laboratory of Green Catalysis of Sichuan Institute of High Education, Zigong, Sichuan 643000, P. R. China
| | - Xiaoqiang Liu
- School of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Zigong, Sichuan 643000, P. R. China.
- Key Laboratory of Green Catalysis of Sichuan Institute of High Education, Zigong, Sichuan 643000, P. R. China
| | - Weidong Jiang
- School of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Zigong, Sichuan 643000, P. R. China.
- Key Laboratory of Green Catalysis of Sichuan Institute of High Education, Zigong, Sichuan 643000, P. R. China
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Wang X, Shu J, Ni T, Xu C, Xu B, Liu X, Zhang K, Jiang W. Transesterification of RNA model induced by novel dinuclear copper (II) complexes with bis-tridentate imidazole derivatives. J Biol Inorg Chem 2023:10.1007/s00775-023-02000-6. [PMID: 37140680 DOI: 10.1007/s00775-023-02000-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Accepted: 04/15/2023] [Indexed: 05/05/2023]
Abstract
Two novel bis-tridentate imidazole derivatives were conveniently synthesized using a 'one-pot' method. Their dinuclear (Cu2L1Cl4, Cu2L2Cl4) and mononuclear (CuL1Cl2, CuL2Cl2∙H2O) copper (II) complexes were synthesized to comparably evaluate their reactivities in the hydrolytic cleavage of 2-hydroxypropyl p-nitrophenyl phosphate (HPNP) as a classic RNA model. Single crystals of Cu2L1Cl4 and Cu2L2Cl4 indicate that both of them are centrosymmetric, and each central copper ion is penta-coordinated. Regarding the transesterification of HPNP, both of dinuclear ones exhibited excess one order of magnitude rate enhancement in contrast with auto-hydrolysis reaction. Under comparable conditions, dinuclear complexes displayed no more than twofold increase in activity over their mononuclear analogues, which verifies the lack of binuclear cooperation effect due to long Cu-to-Cu space.
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Affiliation(s)
- Xiuyang Wang
- School of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong, 643000, Sichuan, People's Republic of China
| | - Jun Shu
- School of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong, 643000, Sichuan, People's Republic of China
| | - Tong Ni
- School of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong, 643000, Sichuan, People's Republic of China
| | - Chengxu Xu
- School of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong, 643000, Sichuan, People's Republic of China
| | - Bin Xu
- School of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong, 643000, Sichuan, People's Republic of China
- Key Laboratory of Green Catalysis of Sichuan Institute of High Education, Sichuan University of Science and Engineering, Sichuan, 643000, Zigong, People's Republic of China
| | - Xiaoqiang Liu
- School of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong, 643000, Sichuan, People's Republic of China
- Key Laboratory of Green Catalysis of Sichuan Institute of High Education, Sichuan University of Science and Engineering, Sichuan, 643000, Zigong, People's Republic of China
| | - Kaiming Zhang
- School of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong, 643000, Sichuan, People's Republic of China
- Key Laboratory of Green Catalysis of Sichuan Institute of High Education, Sichuan University of Science and Engineering, Sichuan, 643000, Zigong, People's Republic of China
| | - Weidong Jiang
- School of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong, 643000, Sichuan, People's Republic of China.
- Key Laboratory of Green Catalysis of Sichuan Institute of High Education, Sichuan University of Science and Engineering, Sichuan, 643000, Zigong, People's Republic of China.
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Ni T. An Intelligent Retrieval Algorithm for Digital Literature Promotion Information Based on TRS Information Retrieval. International Journal of Information Technologies and Systems Approach 2023. [DOI: 10.4018/ijitsa.318458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
The world has entered the information age, and one of the main factors of social development is various information resources. Word processing is one of the first information technologies to be developed that has grown very rapidly and successfully. As a category of multimedia resources, documents are widely used in institutions, such as corporations, governments, and digital libraries. Traditional search technology has been unable to meet the needs of this development, and how to find information in this sea of digital information has become an urgent problem. Therefore, this study has conducted a research experiment on promoting digital literature for text retrieval system information retrieval. The experimental data have shown that 310 (73.81%) students wanted WeChat and Weibo as a way of digital literature retrieval and promotion. Moreover, 267 (63.57%) students wanted e-books as a way to promote, and 172 (40.95%) students would like to participate in novel digital literature retrieval promotion activities.
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Affiliation(s)
- Tong Ni
- Xi'an Innovation College of Yan'an University, Xi'an, China
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Ni T, Sun Z, Zhao F. A case report of invasive infantile primary hyperoxaluria type 1 and literature review. CEN Case Rep 2022; 12:159-163. [PMID: 36194362 PMCID: PMC10151289 DOI: 10.1007/s13730-022-00740-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 09/27/2022] [Indexed: 11/06/2022] Open
Abstract
Infantile primary hyperoxaluria type 1 (PH1) is the most devastating primary hyperoxaluria (PH) subtype as it leads to early end-stage kidney disease (ESKD) associated with high mortality. We report a case of a three-month-old female Chinese infant who was diagnosed with PH1 by renal biopsy and genetic studies. She carried two heterozygous mutations in the alanine-glyoxylate and serine pyruvate aminotransferase (AGXT) gene, one of which has never been previously reported. The patient had multiple organ failures caused by kidney failure, which was improved by extracorporeal membrane oxygenation and continuous renal replacement therapy. However, her primary disease responded poorly to conservative treatment. Fortunately, after waiting for four months, the patient underwent a successful combined liver-kidney transplantation and has progressed well so far. This case highlights the importance of suspecting PH in infant patients with ESKD of uncertain etiology, as early initiation of therapy prevents poor outcomes.
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Affiliation(s)
- Tong Ni
- Department of Nephrology, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Zhenzhen Sun
- Nanjing Key Laboratory of Pediatrics, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Fei Zhao
- Department of Nephrology, Children's Hospital of Nanjing Medical University, Nanjing, China.
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Sun Z, Wang Q, Sun L, Wu M, Li S, Hua H, Sun Y, Ni T, Zhou C, Huang S, Zhang A, Zhang Y, Jia Z. Acetaminophen-induced reduction of NIMA related kinase 7 expression exacerbates acute liver injury. JHEP Rep 2022; 4:100545. [PMID: 36097583 PMCID: PMC9463592 DOI: 10.1016/j.jhepr.2022.100545] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 06/30/2022] [Accepted: 07/05/2022] [Indexed: 01/20/2023] Open
Abstract
Background & Aims Acetaminophen (APAP)-induced acute liver injury (ALI) is a global health issue characterised by an incomplete understanding of its pathogenesis and unsatisfactory therapies. NEK7 plays critical roles in both cell cycle regulation and inflammation. In the present study, we investigated the role and mechanism of NEK7 in APAP-induced ALI. Methods In mice with NEK7 overexpression (hydrodynamic tail vein injection of NEK7 plasmids), hepatocyte-specific NEK7 knockout (cKO), and inducible NEK7 knockout (iKO), an overdose of APAP was administered to induce ALI. Liver injury was determined by an analysis of serum liver enzymes, pathological changes, inflammatory cytokines, and metabonomic profiles. In vitro, hepatocyte damage was evaluated by an analysis of cell viability, the reactive oxygen species levels, and mitochondrial function in different cell lines. Hepatocyte proliferation and the cell cycle status were determined by Ki-67 staining, EdU staining, and the cyclin levels. Results NEK7 was markedly downregulated in APAP-induced injured liver and damaged hepatocytes. NEK7 overexpression in the liver significantly alleviated APAP-induced liver injury, as shown by the restored liver function, reduced pathological injury, and decreased inflammation and oxidative stress, which was confirmed in a hepatocyte cell line. Moreover, both NEK7 cKO and iKO mice exhibited exacerbation of APAP-induced ALI. Finally, we determined that cyclin B1-mediated cell cycle progression could mediate the protective effect of NEK7 against APAP-induced ALI. Conclusions Reduced NEK7 contributes to APAP-induced ALI, possibly by dysregulating cyclins and disturbing cell cycle progression. Lay summary Acetaminophen-induced acute liver injury is one of the major global health issues, owing to its high incidence, potential severity, and limited therapeutic options. Our current understanding of its pathogenesis is incomplete. Herein, we have shown that reduced NEK7 (a protein with a key role in the cell cycle) exacerbates acetaminophen-induced acute liver injury. Hence, NEK7 could be a possible therapeutic target for the prevention or treatment of this condition. NEK7 was downregulated in livers following APAP overdose challenge. Reduced NEK7 worsened APAP-induced acute liver injury. Reduced NEK7 dysregulated cyclins and cell cycle progression. Cyclin B1 overexpression attenuated NEK7 reduction-related worsening of APAP-induced acute liver injury.
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Affiliation(s)
- Zhenzhen Sun
- Nanjing Key Laboratory of Pediatrics, Children’s Hospital of Nanjing Medical University, Nanjing, China
- Department of Nephrology, Children’s Hospital of Nanjing Medical University, Nanjing, China
- Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing, China
| | - Qian Wang
- Nanjing Key Laboratory of Pediatrics, Children’s Hospital of Nanjing Medical University, Nanjing, China
- Department of Nephrology, Children’s Hospital of Nanjing Medical University, Nanjing, China
- Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing, China
| | - Le Sun
- Nanjing Key Laboratory of Pediatrics, Children’s Hospital of Nanjing Medical University, Nanjing, China
- Department of Nephrology, Children’s Hospital of Nanjing Medical University, Nanjing, China
- Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing, China
| | - Mengying Wu
- Nanjing Key Laboratory of Pediatrics, Children’s Hospital of Nanjing Medical University, Nanjing, China
- Department of Nephrology, Children’s Hospital of Nanjing Medical University, Nanjing, China
- Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing, China
| | - Shuzhen Li
- Nanjing Key Laboratory of Pediatrics, Children’s Hospital of Nanjing Medical University, Nanjing, China
- Department of Nephrology, Children’s Hospital of Nanjing Medical University, Nanjing, China
- Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing, China
| | - Hu Hua
- Nanjing Key Laboratory of Pediatrics, Children’s Hospital of Nanjing Medical University, Nanjing, China
- Department of Nephrology, Children’s Hospital of Nanjing Medical University, Nanjing, China
- Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing, China
| | - Ying Sun
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Tong Ni
- Nanjing Key Laboratory of Pediatrics, Children’s Hospital of Nanjing Medical University, Nanjing, China
- Department of Nephrology, Children’s Hospital of Nanjing Medical University, Nanjing, China
- Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing, China
| | - Chunlei Zhou
- Department of Pathology, Children’s Hospital of Nanjing Medical University, Nanjing, China
| | - Songming Huang
- Nanjing Key Laboratory of Pediatrics, Children’s Hospital of Nanjing Medical University, Nanjing, China
- Department of Nephrology, Children’s Hospital of Nanjing Medical University, Nanjing, China
- Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing, China
- Corresponding authors. Addresses: Nanjing Key Laboratory of Pediatrics, Children’s Hospital of Nanjing Medical University, Guangzhou Road #72, Nanjing 210008, China. Tel.: +86-25-8311-7309; Fax: +86-25-8330-4239.
| | - Aihua Zhang
- Nanjing Key Laboratory of Pediatrics, Children’s Hospital of Nanjing Medical University, Nanjing, China
- Department of Nephrology, Children’s Hospital of Nanjing Medical University, Nanjing, China
- Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing, China
- Department of Nephrology, Children’s Hospital of Nanjing Medical University, Guangzhou Road #72, Nanjing 210008, China. Tel.: +86-25-8311-7309; Fax: +86-25-8330-4239.
| | - Yue Zhang
- Nanjing Key Laboratory of Pediatrics, Children’s Hospital of Nanjing Medical University, Nanjing, China
- Department of Nephrology, Children’s Hospital of Nanjing Medical University, Nanjing, China
- Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing, China
- Corresponding authors. Addresses: Nanjing Key Laboratory of Pediatrics, Children’s Hospital of Nanjing Medical University, Guangzhou Road #72, Nanjing 210008, China. Tel.: +86-25-8311-7309; Fax: +86-25-8330-4239.
| | - Zhanjun Jia
- Nanjing Key Laboratory of Pediatrics, Children’s Hospital of Nanjing Medical University, Nanjing, China
- Department of Nephrology, Children’s Hospital of Nanjing Medical University, Nanjing, China
- Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing, China
- Corresponding authors. Addresses: Nanjing Key Laboratory of Pediatrics, Children’s Hospital of Nanjing Medical University, Guangzhou Road #72, Nanjing 210008, China. Tel.: +86-25-8311-7309; Fax: +86-25-8330-4239.
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Sun L, Ji D, Zhi F, Fang Y, Zhu Z, Ni T, Zhu Q, Bao J. MiR-494-3p Upregulation Exacerbates Cerebral Ischemia Injury by Targeting Bhlhe40. Yonsei Med J 2022; 63:389-398. [PMID: 35352891 PMCID: PMC8965425 DOI: 10.3349/ymj.2022.63.4.389] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 11/19/2021] [Accepted: 12/21/2021] [Indexed: 11/27/2022] Open
Abstract
PURPOSE Cerebral ischemia is related to insufficient blood supply and is characterized by abnormal reactive oxygen species (ROS) production and cell apoptosis. Previous studies have revealed a key role for basic helix-loop-helix family member e40 (Bhlhe40) in oxidative stress and cell apoptosis. This study aimed to investigate the roles of miR-494-3p in cerebral ischemia/reperfusion (I/R) injury. MATERIALS AND METHODS A mouse middle cerebral artery occlusion (MCAO/R) model was established to mimic cerebral ischemia in vivo. Brain infarct area was assessed using triphenyl tetrazolium chloride staining. Oxygen-glucose deprivation/reoxygenation (OGD/R) operation was adopted to mimic neuronal injury in vitro. Cell apoptosis was analyzed by flow cytometry. The relationship between miR-494-3p and Bhlhe40 was validated by luciferase reporter and RNA immunoprecipitation assays. RESULTS Bhlhe40 expression was downregulated both in MCAO/R animal models and OGD/R-induced SH-SY5Y cells. Bhlhe40 overexpression inhibited cell apoptosis and reduced ROS production in SH-SY5Y cells after OGD/R treatment. MiR-494-3p was verified to bind to Bhlhe40 and negatively regulate Bhlhe40 expression. Additionally, cell apoptosis and ROS production in OGD/R-treated SH-SY5Y cells were accelerated by miR-494-3p overexpression. Rescue experiments suggested that Bhlhe40 could reverse the effects of miR-494-3p overexpression on ROS production and cell apoptosis. CONCLUSION MiR-494-3p exacerbates brain injury and neuronal injury by regulating Bhlhe40 after I/R.
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Affiliation(s)
- Lingjiang Sun
- Department of Critical Care Medicine, Wuxi Second People's Hospital, Wuxi, Jiangsu, China
| | - Dandan Ji
- Department of Critical Care Medicine, Wuxi Second People's Hospital, Wuxi, Jiangsu, China
| | - Feng Zhi
- Department of Critical Care Medicine, Wuxi Second People's Hospital, Wuxi, Jiangsu, China
| | - Yu Fang
- Department of Critical Care Medicine, Wuxi Second People's Hospital, Wuxi, Jiangsu, China
| | - Zigang Zhu
- Department of Critical Care Medicine, Wuxi Second People's Hospital, Wuxi, Jiangsu, China
| | - Tong Ni
- Department of Critical Care Medicine, Wuxi Second People's Hospital, Wuxi, Jiangsu, China
| | - Qin Zhu
- Department of Stomatology, Taixing Third People's Hospital, Taizhou, Jiangsu, China.
| | - Jie Bao
- Department of Critical Care Medicine, Wuxi Second People's Hospital, Wuxi, Jiangsu, China.
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Guan F, Ni T, Zhu W, Williams LK, Cui LB, Li M, Tubbs J, Sham PC, Gui H. Integrative omics of schizophrenia: from genetic determinants to clinical classification and risk prediction. Mol Psychiatry 2022; 27:113-126. [PMID: 34193973 PMCID: PMC11018294 DOI: 10.1038/s41380-021-01201-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 06/15/2021] [Accepted: 06/17/2021] [Indexed: 02/06/2023]
Abstract
Schizophrenia (SCZ) is a debilitating neuropsychiatric disorder with high heritability and complex inheritance. In the past decade, successful identification of numerous susceptibility loci has provided useful insights into the molecular etiology of SCZ. However, applications of these findings to clinical classification and diagnosis, risk prediction, or intervention for SCZ have been limited, and elucidating the underlying genomic and molecular mechanisms of SCZ is still challenging. More recently, multiple Omics technologies - genomics, transcriptomics, epigenomics, proteomics, metabolomics, connectomics, and gut microbiomics - have all been applied to examine different aspects of SCZ pathogenesis. Integration of multi-Omics data has thus emerged as an approach to provide a more comprehensive view of biological complexity, which is vital to enable translation into assessments and interventions of clinical benefit to individuals with SCZ. In this review, we provide a broad survey of the single-omics studies of SCZ, summarize the advantages and challenges of different Omics technologies, and then focus on studies in which multiple omics data are integrated to unravel the complex pathophysiology of SCZ. We believe that integration of multi-Omics technologies would provide a roadmap to create a more comprehensive picture of interactions involved in the complex pathogenesis of SCZ, constitute a rich resource for elucidating the potential molecular mechanisms of the illness, and eventually improve clinical assessments and interventions of SCZ to address clinical translational questions from bench to bedside.
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Affiliation(s)
- Fanglin Guan
- Department of Forensic Psychiatry, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, China
| | - Tong Ni
- Department of Forensic Psychiatry, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, China
| | - Weili Zhu
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence, Peking University, Beijing, China
| | - L Keoki Williams
- Center for Individualized and Genomic Medicine Research, Department of Internal Medicine, Henry Ford Health System, Detroit, MI, USA
| | - Long-Biao Cui
- Department of Clinical Psychology, School of Medical Psychology, Air Force Medical University, Xi'an, Shaanxi, China
| | - Ming Li
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Justin Tubbs
- Department of Psychiatry, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
- Centre for PanorOmic Sciences, The University of Hong Kong, Hong Kong SAR, China
| | - Pak-Chung Sham
- Department of Psychiatry, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China.
- Centre for PanorOmic Sciences, The University of Hong Kong, Hong Kong SAR, China.
- State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong SAR, China.
| | - Hongsheng Gui
- Center for Individualized and Genomic Medicine Research, Department of Internal Medicine, Henry Ford Health System, Detroit, MI, USA.
- Behavioral Health Services, Henry Ford Health System, Detroit, MI, USA.
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Zhou J, Wu JS, Yan Y, Li J, Ni T, Shao W, Mei JH, Xiong WZ, Wu H. MiR-199a modulates autophagy and inflammation in rats with cerebral infarction via regulating mTOR expression. Eur Rev Med Pharmacol Sci 2021; 24:6338-6345. [PMID: 32572931 DOI: 10.26355/eurrev_202006_21532] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE The aim of this study was to investigate the roles of micro ribonucleic acid (miR)-199a in rats with cerebral infarction by regulating mammalian target of rapamycin (mTOR). MATERIALS AND METHODS A total of 36 Sprague-Dawley rats were randomly assigned into three groups, including: sham group (n=12), model group (n=12) and miR-199a mimics group (n=12). In sham group internal and external carotid arteries were exposed. The ischemia-reperfusion model was successfully established using suture embolization in the other two groups. After modeling, rats in sham group and model group were intraperitoneally injected with normal saline. However, rats in miR-199a mimics group were injected with miR-199a mimics. Following intervention for 3 d, sampling was conducted. Neurological deficit was evaluated in rats based on the Zea-Longa scoring system. Hematoxylin-eosin (HE) staining was performed to observe neuronal morphology. The expression of mTOR was detected using immunohistochemistry, and the relative expression level of tau protein was determined via Western blotting (WB). Besides, the messenger RNA (mRNA) expressions of mTOR and tau were detected by quantitative Polymerase Chain Reaction (qPCR). Finally, inflammatory factor content was measured through enzyme-linked immunosorbent assay (ELISA). RESULTS Model group and miR-199a mimics group exhibited a substantially higher Zea-Longa score than sham group (p<0.05). Compared with model group, the Zea-Longa score rose prominently in miR-199a mimics group (p<0.05). According to the results of HE staining, the structure of neurons in sham group was clear and intact, while the structure of neurons in model group was disordered. Meanwhile, neuronal morphology in miR-199a mimics group was significantly worse than that in model group (p<0.05). Immunohistochemistry results demonstrated that the positive expression level of mTOR was considerably upregulated in both model group and miR-199a mimics group in comparison with sham group (p<0.05). Moreover, its positive expression level in miR-199a mimics group was markedly higher that in model group (p<0.05). Based on the results of WB, model and miR-199a mimics groups exhibited a remarkably higher relative expression level of tau protein than sham group (p<0.05). However, the relative expression level of tau protein in miR-199a mimics group was prominently higher than that in model group (p<0.05). QPCR results manifested that the relative mRNA expression levels of mTOR and tau in model group and miR-199a mimics group were dramatically higher than those in sham group (p<0.05). Compared with those in model group, the relative mRNA expression levels of mTOR and tau increased significantly in miR-199a mimics group (p<0.05). ELISA results revealed that model group and miR-199a mimics group had prominently higher content of inflammatory factors than sham group (p<0.05). In addition, content of inflammatory factors in miR-199a mimics group was considerably higher than that in model group (p<0.05). CONCLUSIONS MiR-199a modulates mTOR expression to exert important regulatory effects on the autophagy and inflammation in rats with cerebral infarction.
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Affiliation(s)
- J Zhou
- Department of Internal Medicine, Wuhan Hospital of Traditional Chinese Medicine, Wuhan, China.
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Yao H, Lu W, Niu G, Zhang Q, Jiang Q, Liu H, Ni T. Characterizing the air pollution of the cities in the closure of corona virus disease 2019 in China. Int J Environ Sci Technol (Tehran) 2021; 18:2053-2062. [PMID: 33868434 PMCID: PMC8042843 DOI: 10.1007/s13762-021-03311-4] [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] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 02/08/2021] [Accepted: 04/06/2021] [Indexed: 06/12/2023]
Abstract
With the rapid development of industrialization and urbanization in China, energy and vehicle consumption have continued to increase in recent years and air pollution has become serious. In early 2020, Corona Virus Disease 2019 broke out in Wuhan, China. From January 29, 2020, several sources of the air pollution almost all stopped working, including gasoline burning vehicles, dust producing building sites, coal-fired factories, etc. Five indicators of the atmospheric environmental quality were observed from December 19, 2019 to April 30, 2020 in nine cities and 1-h average concentrations, 24-h average concentrations and Air Quality Index were assessed. The 1-h average concentrations of the nitrogen dioxide, the ozone and the sulfur dioxide showed obvious difference though the closure did not change the sequence of the five pollutants' concentrations in the air at diverse sampling moments. The changing of the 24-h average concentrations of the five pollutants indicated the amount of pollutants in the air were greatly affected by human activities. The nitrogen dioxide, the sulfur dioxide and the particulate matters decreased obviously in the closure. The air in the metropolis and the south-east cities were relatively clean and the pollutants' concentrations decreased slightly during the closure period. The northern and the heavy industrial cities showed significant drop on air pollution indicators and the air quality of the two city groups could be greatly improved if some effective measures could be taken of environmental management and regional development.
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Affiliation(s)
- H. Yao
- School of Geography, Nantong University, Nantong, 226019 China
- Jiangsu Yangtze River Economic Belt Research Institute, Nantong, 226019 China
| | - W. Lu
- School of Geography, Nantong University, Nantong, 226019 China
- Jiangsu Yangtze River Economic Belt Research Institute, Nantong, 226019 China
| | - G. Niu
- School of Geography, Nantong University, Nantong, 226019 China
- Jiangsu Yangtze River Economic Belt Research Institute, Nantong, 226019 China
| | - Q. Zhang
- School of Geography, Nantong University, Nantong, 226019 China
- Jiangsu Yangtze River Economic Belt Research Institute, Nantong, 226019 China
| | - Q. Jiang
- School of Geography, Nantong University, Nantong, 226019 China
- Jiangsu Yangtze River Economic Belt Research Institute, Nantong, 226019 China
| | - H. Liu
- School of Geography, Nantong University, Nantong, 226019 China
- Jiangsu Yangtze River Economic Belt Research Institute, Nantong, 226019 China
| | - T. Ni
- School of Geographic and Oceanographic Science, Nanjing University, Nanjing, 210023 China
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12
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Li J, Zhu L, Su H, Liu D, Yan Z, Ni T, Wei H, Goh EL, Chen T. Regulation of miR-128 in the nucleus accumbens affects methamphetamine-induced behavioral sensitization by modulating proteins involved in neuroplasticity. Addict Biol 2021; 26:e12881. [PMID: 32058631 DOI: 10.1111/adb.12881] [Citation(s) in RCA: 12] [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: 06/01/2019] [Revised: 12/12/2019] [Accepted: 01/17/2020] [Indexed: 01/09/2023]
Abstract
Methamphetamine (METH) -induced behavioral sensitization depends on long-term neuroplasticity in the mesolimbic dopamine system, especially in the nucleus accumbens (NAc). miR-128, a brain enriched miRNA, was found to have abilities in regulating neuronal excitability and formation of fear-extinction memory. Here, we aim to identify the role of miR-128 on METH-induced locomotor sensitization of male mice. We identified a significant increase of miR-128 in the NAc of mice upon repeated-intermittent METH exposure but not acute METH administration. Microinjection of adeno-associated virus (AAV)-miR-128 over-expression and inhibition constructs into the NAc of mice resulted in enhanced METH-induced locomotor sensitization and attenuated effects of METH respectively. Isobaric tags for relative and absolute quantification (iTRAQ) technology and ingenuity pathway analysis (IPA) were carried out to uncover the potential molecular mechanisms underlying miR-128-regulated METH sensitization. Differentially expressed proteins, including 25 potential targets for miR-128 were annotated in regulatory pathways that modulate dendritic spines, synaptic transmission and neuritogenesis. Of which, Arf6, Cpeb3 and Nlgn1, were found to be participating in miR-128-regulated METH sensitization. Consistently, METH-induced abnormal changes of Arf6, Cpeb3 and Nlgn1 in the NAc of mice were also detected by qPCR and validated by western blot analysis. Thus, miR-128 may contribute to METH sensitization through controlling neuroplasticity. Our study suggested miR-128 was an important regulator of METH- induced sensitization and also provided the potential molecular networks of miR-128 in regulating METH-induced sensitization.
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Affiliation(s)
- Jiaqi Li
- College of Forensic Medicine Xi'an Jiaotong University Health Science Center Xi'an Shaanxi 710061 China
- The Key Laboratory of Health Ministry for Forensic Medicine, Xi'an Jiaotong University Shaanxi 710061 China
| | - Li Zhu
- College of Forensic Medicine Xi'an Jiaotong University Health Science Center Xi'an Shaanxi 710061 China
- The Key Laboratory of Health Ministry for Forensic Medicine, Xi'an Jiaotong University Shaanxi 710061 China
| | - Hang Su
- College of Forensic Medicine Xi'an Jiaotong University Health Science Center Xi'an Shaanxi 710061 China
- The Key Laboratory of Health Ministry for Forensic Medicine, Xi'an Jiaotong University Shaanxi 710061 China
| | - Dan Liu
- College of Forensic Medicine Xi'an Jiaotong University Health Science Center Xi'an Shaanxi 710061 China
- The Key Laboratory of Health Ministry for Forensic Medicine, Xi'an Jiaotong University Shaanxi 710061 China
| | - Zhilan Yan
- College of Forensic Medicine Xi'an Jiaotong University Health Science Center Xi'an Shaanxi 710061 China
- The Key Laboratory of Health Ministry for Forensic Medicine, Xi'an Jiaotong University Shaanxi 710061 China
| | - Tong Ni
- College of Forensic Medicine Xi'an Jiaotong University Health Science Center Xi'an Shaanxi 710061 China
- The Key Laboratory of Health Ministry for Forensic Medicine, Xi'an Jiaotong University Shaanxi 710061 China
| | - Han Wei
- College of Forensic Medicine Xi'an Jiaotong University Health Science Center Xi'an Shaanxi 710061 China
- The Key Laboratory of Health Ministry for Forensic Medicine, Xi'an Jiaotong University Shaanxi 710061 China
| | - Eyleen L.K. Goh
- Department of Research National Neuroscience Institute Singapore 308433
- Neuroscience and Mental Health Faculty, Lee Kong China School of Medicine Nanyang Technological University Singapore 308232
| | - Teng Chen
- College of Forensic Medicine Xi'an Jiaotong University Health Science Center Xi'an Shaanxi 710061 China
- The Key Laboratory of Health Ministry for Forensic Medicine, Xi'an Jiaotong University Shaanxi 710061 China
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Guan F, Han W, Ni T, Zhao L, Li X, Zhang B, Zhang T. Genetic Polymorphisms of RGS14 and Renal Stone Disease. Arch Med Res 2020; 52:332-338. [PMID: 33309307 DOI: 10.1016/j.arcmed.2020.11.011] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 11/12/2020] [Accepted: 11/19/2020] [Indexed: 12/22/2022]
Abstract
BACKGROUND Renal stone disease (RSD) is a common disease of the human urinary system and is regarded as a multifactorial condition affected by environmental and genetic factors. RGS14 encodes a complex scaffolding protein, known as regulator of G protein signaling 14, which is enriched in hippocampal area CA2 dendritic spines. AIM OF THE STUDY We aimed to investigate the association between genetic polymorphisms in RGS14 and the risk of RSD based on a large sample of the Chinese Han population. METHODS A total of 1,436 subjects, comprising 506 patients with RSD and 920 controls, were enrolled in the study. Ten tag SNPs located in the RGS14 gene region were chosen for genotyping. Genetic associations were evaluated at both the single marker and haplotype levels. Genotypic (χ2 test) and allelic analyses (Cochran-Armitage test for trend) were performed for single marker-based association. Two bioinformatics tools, RegulomeDB and GTEx, were used to examine the functional consequences of the target SNP. RESULTS SNP rs11746443 was found to be significantly associated with disease status (χ2 = 12.60, p = 0.0018). Moreover, the A allele of this SNP was significantly associated with an increased risk of RSD (OR [95%CI] = 1.36 [1.13-1.65]). Multiple significant eQTL signals of rs11746443 on RGS14 were identified. CONCLUSIONS This study replicated the association signal of RGS14 with RSD in a large sample of the Chinese Han population. The results suggest that the SNP rs11746443 of RGS14 might increase the risk of RSD by regulating the Ca2+ levels in humans.
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Affiliation(s)
- Fanglin Guan
- College of Medicine and Forensics, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Wei Han
- College of Medicine and Forensics, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Tong Ni
- College of Medicine and Forensics, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Longrui Zhao
- College of Medicine and Forensics, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Xiaoming Li
- Department of Emergency, Shaanxi People's Hospital, Xi'an, China
| | - Bo Zhang
- School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - Tianxiao Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, China.
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Ni T, Yuan M, Ji HH, Tang G, Chen Y, Ma Z, Li XD. Effects of Mutations in the Phenamacril-Binding Site of Fusarium Myosin-1 on Its Motor Function and Phenamacril Sensitivity. ACS Omega 2020; 5:21815-21823. [PMID: 32905433 PMCID: PMC7469408 DOI: 10.1021/acsomega.0c02886] [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] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 08/10/2020] [Indexed: 06/11/2023]
Abstract
Phenamacril is a Fusarium-specific fungicide used for Fusarium head blight management. The target of phenamacril is FgMyo1, the sole class I myosin in Fusarium graminearum. The point mutation S217L in FgMyo1 is responsible for the high resistance of F. graminearum to phenamacril. Recent structural studies have shown that phenamacril binds to the 50 kDa cleft of the FgMyo1 motor domain, forming extensive interactions, including a hydrogen bond between the cyano group of phenamacril and the hydroxyl group of S217. Here, we produced FgMyo1IQ2, a truncated FgMyo1 composed of the motor domain and two IQ motifs complexed with the F. graminearum calmodulin in insect Sf9 cells. Phenamacril potently inhibited both the basal and the actin-activated ATPase activities of FgMyo1IQ2, with an IC50 in a micromolar range. S217 mutations of FgMyo1IQ2 substantially increased the IC50 of phenamacril. S217T or S217L each increased the IC50 of phenamacril for ∼60-fold, while S217A only increased the IC50 for ∼4-fold. These results indicate that the hydroxyl group of S217 plays an important, but nonessential role in phenamacril binding and that the bulky side chain at the position 217 sterically hinders phenamacril binding. On the other hand, S217P, which might alter the local conformation of the phenamacril-binding site, completely abolished the phenamacril inhibition. Because the cyano group of phenamacril does not form discernible interactions with FgMyo1 other than the nonessential hydrogen bond with the S217 hydroxyl group, we propose the cyano group of phenamacril as a key modification site for the development of novel fungicides.
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Affiliation(s)
- Tong Ni
- Group
of Cell Motility and Muscle Contraction, State Key Laboratory of Integrated
Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Min Yuan
- Institute
of Physical Science and Information Technology, Anhui University, Hefei, Anhui 230601, China
| | - Huan-Hong Ji
- Group
of Cell Motility and Muscle Contraction, State Key Laboratory of Integrated
Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Guangfei Tang
- Institute
of Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Yun Chen
- Institute
of Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Zhonghua Ma
- Institute
of Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Xiang-dong Li
- Group
of Cell Motility and Muscle Contraction, State Key Laboratory of Integrated
Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
- University
of Chinese Academy of Sciences, Beijing 100049, China
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15
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Guan F, Han W, Ni T, Zhao L, Zhang B, Li M, Luo X, Zhang L, Li X, Sun W, Zhang T. Risk of gastric ulcer contributed by genetic polymorphisms of PSCA: A case-control study based on Chinese Han population. Gene 2020; 757:144941. [PMID: 32640304 DOI: 10.1016/j.gene.2020.144941] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Revised: 05/29/2020] [Accepted: 07/01/2020] [Indexed: 02/07/2023]
Affiliation(s)
- Fanglin Guan
- College of Medicine and Forensics, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Wei Han
- College of Medicine and Forensics, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Tong Ni
- College of Medicine and Forensics, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Longrui Zhao
- College of Medicine and Forensics, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Bo Zhang
- School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - Miao Li
- Department of Pathology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Xiaoqin Luo
- Department of Nutrition and Food Safety, School of Public Health, Xi'an Jiaotong University, Xi'an, China
| | - Lei Zhang
- Department of Laboratory Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Xiaoming Li
- Department of Emergency, Shaanxi People's Hospital, Xi'an, China
| | - Wei Sun
- Department of Digestion, Xi'an Central Hospital, Xi'an, China
| | - Tianxiao Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, China.
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Guan F, Ni T, Han W, Lin H, Zhang B, Chen G, Zhu L, Liu D, Zhang T. Evaluation of the relationships of the WBP1L gene with schizophrenia and the general psychopathology scale based on a case-control study. Am J Med Genet B Neuropsychiatr Genet 2020; 183:164-171. [PMID: 31840934 DOI: 10.1002/ajmg.b.32773] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 10/08/2019] [Accepted: 12/02/2019] [Indexed: 01/07/2023]
Abstract
WBP1L is a target of microRNA 137 (miR-137) and has been considered a candidate gene for schizophrenia (SCZ). To investigate the relationships between WBP1L and SCZ and its related symptom scales, a total of 5,993 Chinese Han subjects, including 2,128 SCZ patients and 3,865 controls, were enrolled. In addition, an independent sample set for replication study including 1,052 SCZ patients and 2,124 controls were also recruited. Thirty-two tag single nucleotide polymorphisms (SNPs) located within gene region of WBP1L were selected for genotyping and analyzing. The expression quantitative trait loci (eQTL) effects for the targeted SNPs were investigated with gene expression data from multiple human tissues. Rs4147157 (OR = 0.84, p = 1.51 × 10-5 ) and rs284854 (OR = 1.14, p = 7.00 × 10-4 ) were significantly associated with SCZ disease status and these association signals were replicated in our replication sample. A significant association was identified between rs4147157 and the general (β = -.66, p = .001) and total (β = -.8, p = .0042) scores of positive and negative syndrome scale scores in SCZ patients. Both SNPs were significant eQTL for genes around WBP1L in human brain tissues including ARL3 and AS3MT. To conclude, SNPs rs4147157 and rs284854 were associated with SCZ in the Chinese Han population. Additionally, rs4147157 was significantly associated with specific symptom features of SCZ.
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Affiliation(s)
- Fanglin Guan
- Department of Forensic Psychiatry, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, China.,Key Laboratory of National Ministry of Health for Forensic Sciences, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, China
| | - Tong Ni
- Department of Forensic Psychiatry, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, China.,Key Laboratory of National Ministry of Health for Forensic Sciences, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, China
| | - Wei Han
- Department of Forensic Psychiatry, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, China.,Key Laboratory of National Ministry of Health for Forensic Sciences, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, China
| | - Huali Lin
- Xi'an Mental Health Center, Xi'an, Shaanxi, China
| | - Bo Zhang
- Department of Biomedical Engineering, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Gang Chen
- Department of Forensic Psychiatry, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, China.,Department of Forensic Pathology, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, China
| | - Li Zhu
- Department of Forensic Psychiatry, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, China.,Key Laboratory of National Ministry of Health for Forensic Sciences, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, China
| | - Dan Liu
- Department of Forensic Psychiatry, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, China.,Key Laboratory of National Ministry of Health for Forensic Sciences, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, China
| | - Tianxiao Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, China
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Guan F, Zhang T, Han W, Zhu L, Ni T, Lin H, Liu D, Chen G, Xiao J, Li T. Relationship of SNAP25 variants with schizophrenia and antipsychotic-induced weight change in large-scale schizophrenia patients. Schizophr Res 2020; 215:250-255. [PMID: 31653583 DOI: 10.1016/j.schres.2019.09.015] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 05/19/2019] [Accepted: 09/23/2019] [Indexed: 01/16/2023]
Abstract
The SNAP25 gene is involved in the development of antipsychotic-induced weight gain (AIWG) or metabolic syndrome during antipsychotics use in Americans and Europeans, but its role in Asians remains unknown. To identify common variants in SNAP25 associated with schizophrenia and evaluate their effects on AIWG and antipsychotic responses in Han Chinese individuals with schizophrenia, we conducted a two-stage case-control study of 3,243 patients and 6,154 healthy controls. 2128 inpatients in the replication stage have received conventional treatment with an antipsychotic monotherapy (Haloperidol, Olanzapine or Risperidone) for 10 weeks at least. Weight change, antipsychotic responses and metabolic indices change were assessed during treatments. Three SNPs were significantly associated with schizophrenia in samples (rs6039769, P = 6.64 × 10-7; rs3787283, P = 0.004283; rs3746544, P = 2.51 × 10-6). Of these, rs6039769 is a novel schizophrenia-associated SNP and is uncorrelated with the other two variants, which have previously been associated with schizophrenia in European-ancestry samples. Rs6039769 was significantly associated with AIWG (P < 0.001), but not with antipsychotic responses or metabolic indices. Another two SNPs were not associated with AIWG or antipsychotic responses or metabolic indices. Overall, there were significant differences in antipsychotic responses and metabolic indices among the three treatment groups. Our findings suggest that SNAP25 gene may contribute to the susceptibility of AIWG and even metabolic disturbances. A prior identification of high-risk of patients with rs6039769 would contribute to a better precision of the pharmacological treatment.
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Affiliation(s)
- Fanglin Guan
- Department of Forensic Psychiatry, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi, 710061, China; Key Laboratory of National Ministry of Health for Forensic Sciences, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi, 710061, China
| | - Tianxiao Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi, 710061, China
| | - Wei Han
- Department of Forensic Psychiatry, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi, 710061, China; Key Laboratory of National Ministry of Health for Forensic Sciences, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi, 710061, China
| | - Li Zhu
- Department of Forensic Psychiatry, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi, 710061, China; Key Laboratory of National Ministry of Health for Forensic Sciences, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi, 710061, China
| | - Tong Ni
- Department of Forensic Psychiatry, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi, 710061, China; Key Laboratory of National Ministry of Health for Forensic Sciences, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi, 710061, China
| | - Huali Lin
- Xi'an Mental Health Center, 15 Yanyin Road, Xi'an, Shaanxi, 710086, China
| | - Dan Liu
- Department of Forensic Psychiatry, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi, 710061, China; Key Laboratory of National Ministry of Health for Forensic Sciences, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi, 710061, China
| | - Gang Chen
- Key Laboratory of National Ministry of Health for Forensic Sciences, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi, 710061, China; Department of Forensic Pathology, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi, 710061, China
| | - Jing Xiao
- Key Laboratory of National Ministry of Health for Forensic Sciences, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi, 710061, China; Department of Forensic Pathology, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi, 710061, China
| | - Tao Li
- Key Laboratory of National Ministry of Health for Forensic Sciences, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi, 710061, China; Department of Forensic Pathology, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi, 710061, China.
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Lu W, Wang Y, Zhang Q, Owen S, Green M, Ni T, Edwards M, Li Y, Zhang L, Harris A, Li JL, Jackson DG, Jiang S. TNF-derived peptides inhibit tumour growth and metastasis through cytolytic effects on tumour lymphatics. Clin Exp Immunol 2019; 198:198-211. [PMID: 31206614 DOI: 10.1111/cei.13340] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/10/2019] [Indexed: 01/08/2023] Open
Abstract
Tumour necrosis factor (TNF) is a multi-functional cytokine with profound and diverse effects on physiology and pathology. Identifying the molecular determinants underlying the functions and pathogenic effects of TNF is key to understanding its mechanisms of action and identifying new therapeutic opportunities based on this important molecule. Previously, we showed that some evolutionarily conserved peptides derived from TNF could induce cell death (e.g. apoptosis and/or necrosis), a feature of immune defence mechanisms shared by many vertebrates. In this study, we demonstrated that necrosis-inducing peptide P16 kills human glioblastoma cancer cells and primary human hepatoma or renal cancer cells isolated from patients who had not responded to standard treatments. Importantly, we show that the necrosis-inducing peptide P1516 significantly improves survival by inhibiting tumour metastasis in a 4T1 breast cancer syngeneic graft mouse model. Because the lymphatic system is an important metastatic route in many cancers, we also tested the effect of TNF-derived peptides on monolayers of primary human lymphatic endothelial cells (hDLEC) and found that they increased junctional permeability by inducing cytoskeletal reorganization, gap junction formation and cell death. Transmission electron microscopy imaging evidence, structural analysis and in-vitro liposome leakage experiments strongly suggest that this killing is due to the cytolytic nature of these peptides. P1516 provides another example of a pro-cytotoxic TNF peptide that probably functions as a cryptic necrotic factor released by TNF degradation. Its ability to inhibit tumour metastasis and improve survival may form the basis of a novel approach to cancer therapy.
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Affiliation(s)
- W Lu
- Department of Oncology, University of Oxford, Oxford, UK.,Shanghai JW Inflinhix Co. Ltd, Shanghai, P.R. China.,Oxford Vacmedix (Changzhou) Co. Ltd, Changzhou City, Jiangsu Province, P.R. China
| | - Y Wang
- Department of Cardiovascular Medicine, Wellcome Trust Centre for Human Genetics, University of Oxford, UK
| | - Q Zhang
- Oxford Vacmedix (Changzhou) Co. Ltd, Changzhou City, Jiangsu Province, P.R. China
| | - S Owen
- Department of Oncology, University of Oxford, Oxford, UK
| | - M Green
- Department of Oncology, University of Oxford, Oxford, UK
| | - T Ni
- Division of Structural Biology, Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
| | | | - Y Li
- Department of Oncology, University of Oxford, Oxford, UK
| | - L Zhang
- Department of Oncology, University of Oxford, Oxford, UK
| | - A Harris
- Department of Oncology, University of Oxford, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, Oxford, UK
| | - J-L Li
- Department of Oncology, University of Oxford, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, Oxford, UK.,Institute of Translational and Stratified Medicine, Plymouth University Peninsula Schools of Medicine and Dentistry, Plymouth Science Park, Plymouth, PL6 8BU, UK
| | - D G Jackson
- MRC Human Immunology Unit, Radcliffe Department of Medicine, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, OX3 9DS, UK
| | - S Jiang
- Department of Oncology, University of Oxford, Oxford, UK.,Shanghai JW Inflinhix Co. Ltd, Shanghai, P.R. China.,Oxford Vacmedix (Changzhou) Co. Ltd, Changzhou City, Jiangsu Province, P.R. China.,Oxford Vacmedix UK Ltd, Oxford, UK
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Ni T, Li Y, Wang R, Hu T, Guan F, Zhu L, Han W, Chen T. The potential involvement of miR-204-3p-axon guidance network in methamphetamine-induced locomotor sensitization of mice. Neurosci Lett 2019; 707:134303. [PMID: 31153969 DOI: 10.1016/j.neulet.2019.134303] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 01/16/2019] [Revised: 05/17/2019] [Accepted: 05/28/2019] [Indexed: 10/26/2022]
Abstract
MicroRNAs (miRNAs) are gene expression regulators that play an important role in drug addiction. We previously reported miR-204-3p was the only up-regulated miRNA in the nucleus accumbens (NAc) in methamphetamine (METH)-sensitized mice. In this study, we are reporting a miR-204-3p potential mechanism in METH sensitization. We first measured the expression changes of miR-204-3p in the NAc of METH- sensitized mice. Then we predicted the targets of miR-204-3p by bioinformatics tools and combined the potential targets with the METH-responsive genes from the ArrayExpress database. KEGG pathway analyses were performed to investigate the prospective mechanisms and four enriched genes were validated by RT-PCR. As a result, miR-204-3p showed a shift from down-regulation to up-regulation in the NAc from the development to the expression of METH sensitization. Bioinformatics analysis predicted 1834 putative targets, 259 of which were differentially expressed in the NAc in response to METH. These targets were significantly enriched in axon guidance (P = 9.59 × 10-6). Four putative targets (Sema3A, Plxna4, Rac1, and Pak3) enriched in axon guidance also exhibited significant changes in the NAc after METH challenge injection. Moreover, expression levels of miR-204-3p, Sema3A and Plxna4 exhibited a negative association in the expression of METH sensitization. It appeared that miR-204-3p may be involved in the expression of METH sensitization by regulating the expression of Sema3A and Plxna4. Our study provided a potential network of miR-204-3p-axon guidance in the NAc in the expression of METH-induced behavioral sensitization.
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Affiliation(s)
- Tong Ni
- College of Forensic Medicine, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, PR China; The Key Laboratory of Health Ministry for Forensic Science, Xi'an Jiaotong University, Shaanxi, PR China
| | - Yanlin Li
- Shaanxi Police College, Xi'an, Shaanxi, 710021, PR China
| | - Rui Wang
- College of Forensic Medicine, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, PR China; The Key Laboratory of Health Ministry for Forensic Science, Xi'an Jiaotong University, Shaanxi, PR China
| | - Tinghong Hu
- College of Forensic Medicine, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, PR China; The Key Laboratory of Health Ministry for Forensic Science, Xi'an Jiaotong University, Shaanxi, PR China
| | - Fanglin Guan
- College of Forensic Medicine, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, PR China; The Key Laboratory of Health Ministry for Forensic Science, Xi'an Jiaotong University, Shaanxi, PR China
| | - Li Zhu
- College of Forensic Medicine, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, PR China; The Key Laboratory of Health Ministry for Forensic Science, Xi'an Jiaotong University, Shaanxi, PR China
| | - Wei Han
- College of Forensic Medicine, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, PR China; The Key Laboratory of Health Ministry for Forensic Science, Xi'an Jiaotong University, Shaanxi, PR China
| | - Teng Chen
- College of Forensic Medicine, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, PR China; The Key Laboratory of Health Ministry for Forensic Science, Xi'an Jiaotong University, Shaanxi, PR China.
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Liu D, Zhu L, Ni T, Guan F, Chen Y, Ma D, Goh EL, Chen T. Ago2 and Dicer1 are involved in METH-induced locomotor sensitization in mice via biogenesis of miRNA. Addict Biol 2019. [PMID: 29516602 DOI: 10.1111/adb.12616] [Citation(s) in RCA: 9] [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] [Indexed: 12/24/2022]
Abstract
microRNA (miRNA) play important roles in drug addiction and act as a post-transcriptional regulator of gene expression. We previously reported extensive downregulation of miRNAs in the nucleus accumbens (NAc) of methamphetamine (METH)-sensitized mice. However, the regulatory mechanism of this METH-induced downregulation of miRNAs has yet to be elucidated. Thus, we examined METH-induced changes in the expression of miRNAs and their precursors, as well as the expression levels of mRNA and the proteins involved in miRNA biogenesis such as Dicer1 and Ago2, in the nucleus accumbens of METH-induced locomotor sensitized mice. miRNAs and Ago2 were significantly downregulated, while the expression of miRNA precursors remained unchanged or upregulated, which suggests that the downregulation of miRNAs was likely due to a reduction in Ago2-mediated splicing but unlikely to be regulated at the transcription level. Interestingly, the expression level of Dicer1, which is a potential target of METH-induced decreased miRNAs, such as miR-124, miR-212 and miR-29b, was significantly increased. In conclusion, this study indicates that miRNA biogenesis (such as Ago2 and Dicer1) and their miRNA products may have a role in the development of METH addiction.
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Affiliation(s)
- Dan Liu
- College of Forensic MedicineXi'an Jiaotong University Health Science Center China
- The Key Laboratory of Health Ministry for Forensic ScienceXi'an Jiaotong University China
| | - Li Zhu
- College of Forensic MedicineXi'an Jiaotong University Health Science Center China
- The Key Laboratory of Health Ministry for Forensic ScienceXi'an Jiaotong University China
| | - Tong Ni
- College of Forensic MedicineXi'an Jiaotong University Health Science Center China
- The Key Laboratory of Health Ministry for Forensic ScienceXi'an Jiaotong University China
| | - Fang‐lin Guan
- College of Forensic MedicineXi'an Jiaotong University Health Science Center China
- The Key Laboratory of Health Ministry for Forensic ScienceXi'an Jiaotong University China
| | - Yan‐jiong Chen
- Departments of Immunology and Pathogenic Biology, College of Basic MedicineXi'an Jiaotong University Health Science Center China
| | - Dong‐liang Ma
- Singhealth Duke‐NUS Neuroscience Academic Clinical Programme Singapore
| | - Eyleen L.K. Goh
- Singhealth Duke‐NUS Neuroscience Academic Clinical Programme Singapore
- National Neuroscience Institute Singapore
| | - Teng Chen
- College of Forensic MedicineXi'an Jiaotong University Health Science Center China
- The Key Laboratory of Health Ministry for Forensic ScienceXi'an Jiaotong University China
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21
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Xu Y, Wang R, Zhu M, Li X, Pan X, Ni T, Zhou S. [Diagnostic value of dynamic-extended focused assessment with sonography for trauma in patients with multiple trauma]. Zhonghua Wei Zhong Bing Ji Jiu Yi Xue 2018; 30:61-66. [PMID: 29308760 DOI: 10.3760/cma.j.issn.2095-4352.2018.01.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To investigate the diagnostic value of dynamic-extended focused assessment with sonography for trauma (D-EFAST) in patients with multiple trauma in intensive care unit (ICU). METHODS A prospective clinical study was conducted. Eighty patients with multiple trauma admitted to ICU of Anhui Provincial Hospital from September 1st, 2014 to December 31st, 2016 were enrolled. Extended focused assessment with sonography for trauma (E-FAST) check was conducted at first, for those who had positive findings diagnosis was confirmed by immediately CT examination or surgical exploration. If it was negative, the patients received E-FAST every morning for 7 days (defined as D-EFAST), for those with positive findings, immediately CT or surgery was performed to clarify the diagnosis. The final clinical diagnosis was used as the "gold standard" to calculate the diagnostic accordance rate of EFAST and D-EFAST examination technique for pneumothorax, pleural effusion, spleen injury, kidney damage, liver damage, gastrointestinal injury, pericardial effusion, bladder rupture, and pancreatic injury, as well as their sensitivity, specificity, positive predictive value, negative predictive value, accuracy rate, and missed diagnosis rate, and the difference between EFAST and D-EFAST was compared. RESULTS There were 4 patients excluded because of death and abandoning treatment, and finally 76 patients were included in the study. The total sensitivity of E-FAST examination technique for pneumothorax, pleural effusion, spleen injury, liver damage, gastrointestinal injury, pericardial effusion, and bladder rupture was 75.9% (66/87), and the specificity was 98.3% (587/597), the positive predictive value was 86.8% (66/76), and the negative predictive value was 96.5% (587/608), the accuracy rate was 95.5% (653/684), and the rate of missed diagnosis was 24.1% (21/87). The most of the delayed injury in patients with multiple trauma occurred at 2-7 days after injury with incidence of 4.8% (33/684). The diagnostic sensitivity of D-EFAST for delayed injury was 98.3% (118/120), the specificity was 99.8% (563/564), the positive predictive value was 99.2% (118/119), the negative predictive value was 99.6% (563/565), the diagnostic accuracy rate was 99.6% (681/684), and rate of missed diagnosis was 1.7% (2/120). When the final clinical diagnosis was set as the "gold standard", D-EFAST technology for the detection rate was 98.3% (118/120) for patients with multiple trauma on organ injury while the detection rate of E-FAST was 75.9% (66/87), with statistical significant difference (P < 0.01), indicating that D-EFAST was better than E-FAST in check of multiple trauma patients with organ injury. CONCLUSIONS Although the E-FAST technology can quickly diagnose the multiple trauma patients and win the rescue time for critical patients, multiple trauma patients injured after 2-7 days prone to delayed damage and are difficult to detect, and D-EFAST can be used to find delayed damage earlier, and reduce the misdiagnosis rate of multiple trauma patients.
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Affiliation(s)
- Yongsong Xu
- Department of Emergency Medicine, Anhui Provincial Hospital Affiliated to Anhui Medical University, Hefei 230001, Anhui, China (Xu YS, Wang RZ, Zhu MM, Li XX, Pan XD, Ni T); Department of Intensive Care Unit, Anhui Provincial Hospital Affiliated to Anhui Medical University, Hefei 230001, Anhui, China (Zhou SS). Corresponding author: Zhou Shusheng,
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22
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Zhang T, Zhu L, Ni T, Liu D, Chen G, Yan Z, Lin H, Guan F, Rice JP. Voltage-gated calcium channel activity and complex related genes and schizophrenia: A systematic investigation based on Han Chinese population. J Psychiatr Res 2018; 106:99-105. [PMID: 30308413 DOI: 10.1016/j.jpsychires.2018.09.020] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 09/27/2018] [Accepted: 09/28/2018] [Indexed: 12/19/2022]
Abstract
Schizophrenia (SCZ) is a devastating mental disorder affecting approximately 1% of the worldwide population. Early studies have indicated that genetics plays an important role in the onset and development of SCZ. Accumulating evidence supports that SCZ is linked to abnormalities of synapse transmission and synaptic plasticity. Voltage-gated calcium channel (VGCC) subunits are critical for mediating intracellular Ca2 + influx and therefore are responsible for changing neuronal excitability and synaptic plasticity. To systematically investigate the role of calcium signaling genes in SCZ susceptibility, we conducted a case-control study that included 2518 SCZ patients and 7521 healthy controls with Chinese Han ancestry. Thirty-seven VGCC genes, including 363 tag single nucleotide polymorphisms (SNPs), were examined. Our study replicated the following previously identified susceptible loci: CACNA1C, CACNB2, OPRM1, GRM7 and PDE4B. In addition, several novel loci including CACNA2D1, PDE4D, NALCN, and CACNA2D3 were also identified to be associated with SCZ in our Han Chinese sample. Combined with GTEx eQTL data, we have shown that CASQ2, ITGAV, and TMC2 can be also added into the prioritization list of SCZ susceptible genes. Two-way interaction analyses identified widespread gene-by-gene interactions among VGCC activity and complex-related genes for the susceptibility of SCZ. Further sequencing based studies are still needed to unravel potential contributions of schizophrenia risk from rare or low frequency variants of these candidate genes.
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Affiliation(s)
- Tianxiao Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi, 710061, China
| | - Li Zhu
- Department of Forensic Psychiatry, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi, 710061, China; Key Laboratory of National Ministry of Health for Forensic Sciences, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi, 710061, China
| | - Tong Ni
- Department of Forensic Psychiatry, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi, 710061, China; Key Laboratory of National Ministry of Health for Forensic Sciences, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi, 710061, China
| | - Dan Liu
- Department of Forensic Psychiatry, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi, 710061, China; Key Laboratory of National Ministry of Health for Forensic Sciences, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi, 710061, China
| | - Gang Chen
- Key Laboratory of National Ministry of Health for Forensic Sciences, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi, 710061, China; Department of Forensic Pathology, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi, 710061, China
| | - Zhilan Yan
- Department of Forensic Psychiatry, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi, 710061, China; Key Laboratory of National Ministry of Health for Forensic Sciences, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi, 710061, China
| | - Huali Lin
- Xi'an Mental Health Center, 15 Yanyin Road, Xi'an, Shaanxi, 710086, China
| | - Fanglin Guan
- Department of Forensic Psychiatry, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi, 710061, China; Key Laboratory of National Ministry of Health for Forensic Sciences, School of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, 76 Yanta West Road, Xi'an, Shaanxi, 710061, China.
| | - John P Rice
- Department of Psychiatry, School of Medicine, Washington University in St. Louis, 63124, USA
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Jing R, Liu Y, Guo P, Ni T, Gao X, Mei R, He X, Zhang J. Evaluation of Common Variants in Matrix Metalloproteinase-9 Gene with Lumbar Disc Herniation in Han Chinese Population. Genet Test Mol Biomarkers 2018; 22:622-629. [PMID: 30289281 DOI: 10.1089/gtmb.2018.0080] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
OBJECTIVE Lumbar disc herniation (LDH) is a common and frequent orthopedic disease with strong genetic determinants. The disruption of the intervertebral disc extracellular matrix has been found to play a key role in the development of LDH, suggesting that abnormal matrix metalloproteinases (MMPs) may promote the degradation of the disc matrix. MMP-9, an important member of the MMP family, is a good candidate for the LDH susceptibility gene. The present study aimed to investigate the association of common variants in the MMP-9 gene with the risk, severity, and clinical characteristic variables of LDH. MATERIALS AND METHODS Fourteen tag single nucleotide polymorphisms (SNPs) entirely covering the region of the MMP-9 gene were analyzed in a sample of 845 patients and 1751 healthy controls. RESULTS The SNP rs17576 was found to be significantly associated with susceptibility to LDH (OR = 0.77, p = 0.0002), which was also confirmed by haplotype-based analyses (rs79845319-rs17576-rs45437897, global p < 0.001). Our results indicated that the A allele of rs17576 reduced the risk of LDH by ∼23% on average. Furthermore, the G allele of rs17576 was found to correlate with more severe grades of disc degeneration. CONCLUSION Our results provide additional evidence supporting an important role of the MMP-9 gene in the pathogenesis of LDH.
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Affiliation(s)
- Rong Jing
- 1 Department of Orthopedics, The Second Affiliated Hospital, Xi'an Jiaotong University , Xi'an, China
| | - Yunlei Liu
- 2 Department of Traditional Chinese Medicine, Affiliated Hospital of Yan'an University , Yan' an, China
| | - Peng Guo
- 3 Department of Joint Surgery, Yan'an People's Hospital , Yan'an, China
| | - Tong Ni
- 4 Key Laboratory of National Ministry of Health for Forensic Sciences, School of Medicine and Forensics, Xi'an Jiaotong University , Xi'an, China
| | - Xiang Gao
- 5 Department of Rehabilitation Medicine, Affiliated Hospital of Yan'an University , Yan' an, China
| | - Rong Mei
- 5 Department of Rehabilitation Medicine, Affiliated Hospital of Yan'an University , Yan' an, China
| | - Xijing He
- 1 Department of Orthopedics, The Second Affiliated Hospital, Xi'an Jiaotong University , Xi'an, China
| | - Jianlin Zhang
- 3 Department of Joint Surgery, Yan'an People's Hospital , Yan'an, China
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Li M, Fang Y, Yao M, Yu WR, Ni T, Gu C, Yang PG, Mao ZG. [Effects of transforming growth factor β1 receptor inhibitor SD-208 on human hypertrophic scar]. Zhonghua Shao Shang Za Zhi 2017; 32:389-95. [PMID: 27464628 DOI: 10.3760/cma.j.issn.1009-2587.2016.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To investigate the effects of transforming growth factor β1 (TGF-β1) receptor inhibitor SD-208 on human hypertrophic scar and its mechanisms. METHODS Scar fibroblasts were isolated from deprecated human hypertrophic scar tissue and then sub-cultured. Cells of the fifth passage were used in the following experiments. (1) Cells were divided into blank control group (BC) and 0.5, 1.0, 3.0, and 5.0 μmol/L SD-208 groups according to the random number table (the same grouping method below), with 6 wells in each group. Cells in group BC were added with 1 μL phosphate buffer solution, while cells in the latter four groups were added with 0.5, 1.0, 3.0, and 5.0 μmol/L SD-208, respectively. After being cultured for 12 hours, the proliferation activity of cells was detected by cell counting kit 8 and microplate reader (denoted as absorbance value). Suitable amount of substance concentration of SD-208 according to the results of proliferation activity of cells was chosen for the following experiments. (2) Another batch of cells were divided into group BC and 1, 3 μmol/L SD-208 groups and treated as in (1), with 8 wells in each group. The number of migration cells was detected by transwell method. (3) Another batch of cells were grouped and treated as in (2), and the microfilament morphology of cells was observed by rhodamine-phalloidin staining. (4) Another batch of cells were grouped and treated as in (2), and the protein expression of TGF-β1 was assessed with Western blotting. (5) Forty-eight BALB/c nude mice were divided into normal saline group (NS) and 1 μmol/L SD-208 group, and one longitudinal incision with length of 1 cm was made on their back. Then human hypertrophic scar tissue was embedded into the incision. On post injury day 7, multipoint injection of NS in a volume of 0.05 mL was performed in wounds of rats in group NS, while rats in 1 μmol/L SD-208 group were given 0.05 mL 1 μmol/L SD-208, once a day. On the day 0 (the same day), 2, 4, 6, 8, 10, 12, 14, 16, 18, and 20 post first time of injection, the weight of 8 nude mice was weighed by electronic scale, and scar area was measured by vernier caliper and the ratio of rest scar area was calculated. (6) In week 1, 2, and 3 post first time of injection, the protein expression of TGF-β1 of human hypertrophic scar tissue was assessed with Western blotting. Data were processed with one-way analysis of variance and two independent-sample t test. RESULTS (1) The proliferation activity of cells in group BC, 0.5, 1.0, 3.0, and 5.0 μmol/L SD-208 groups was respectively 1.00±0.03, 0.90±0.08, 0.68±0.11, 0.54±0.04, and 0.42±0.09, and the proliferation activity of cells in 0.5, 1.0, 3.0, and 5.0 μmol/L SD-208 groups was significantly lower than that in group BC (with t values from 2.9 to 22.1, P<0.05 or P<0.01). (2) The number of migration cells in 1, 3 μmol/L SD-208 groups was significantly less than that in group BC (with t values respectively 6.5 and 6.4, P values below 0.01). (3) Compared with that in group BC, fluorescence intensity of microfilaments of cells in 1, 3 μmol/L SD-208 groups was attenuated, and the pseudopod extended less. (4) The protein expressions of TGF-β1 of cells in group BC and 1, 3 μmol/L SD-208 groups were respectively 1.00±0.08, 0.80±0.08, and 0.61±0.05, and the protein expressions of TGF-β1 of cells in 1, 3 μmol/L SD-208 groups were significantly lower than those in group BC (with t values respectively 4.0 and 9.2, P values below 0.01). (5) The weights of nude mice in group NS and 1 μmol/L SD-208 group were similar on each time day (with t values from 0.2 to 1.1, P values above 0.05). The ratios of rest scar area of nude mice in two groups were decreased along with the injection time, and the ratios of rest scar area of nude mice in 1 μmol/L SD-208 group were significantly less than those in group NS from the day 6 to 20 post first time of injection (with t values from 1.8 to 15.9, P<0.05 or P<0.01). In week 1, 2, and 3 post first time of injection, the protein expressions of TGF-β1 of human hypertrophic scar tissue in nude mice in two groups showed a tendency of decrease, and the protein expressions of TGF-β1 of human hypertrophic scar tissue in nude mice in 1 μmol/L SD-208 group were significantly lower than those in group NS (with t values from 6.2 to 19.1, P values below 0.01). CONCLUSIONS SD-208 has significant inhibition effect on human hypertrophic scars, and the mechanism is correlated to the inhibition of protein expression of endogenous TGF-β1.
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Affiliation(s)
- M Li
- Department of Burns and Plastic Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 201999, China
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Abstract
Blebbistatin is a potent and specific inhibitor of the motor functions of class II myosins, including striated muscle myosin and nonmuscle myosin-2 (NM2). However, the blebbistatin inhibition of NM2c has not been assessed and remains controversial with respect to its efficacy with smooth muscle myosin (SmM), which is highly homologous to NM2. To clarify these issues, we analyzed the effects of blebbistatin on the motor activities of recombinant SmM and three NM2s (NM2a, -2b, and -2c). We found that blebbistatin potently inhibits the actin-activated ATPase activities of SmM and NM2s with following IC50 values: 6.47 μM for SmM, 3.58 μM for NM2a, 2.30 μM for NM2b, and 1.57 μM for NM2c. To identify the blebbistatin-resistant myosin-2 mutant, we performed mutagenesis analysis of the conserved residues in the blebbistatin-binding site of SmM and NM2s. We found that the A456F mutation renders SmM and NM2s resistant to blebbistatin without greatly altering their motor activities or phosphorylation-dependent regulation, making A456F a useful mutant for investigating the cellular function of NM2s.
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Affiliation(s)
- Hai-Man Zhang
- Group of Cell Motility and Muscle Contraction, State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences , Beijing, China 100101.,University of Chinese Academy of Sciences , Beijing, China 100049
| | - Huan-Hong Ji
- Group of Cell Motility and Muscle Contraction, State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences , Beijing, China 100101
| | - Tong Ni
- Group of Cell Motility and Muscle Contraction, State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences , Beijing, China 100101.,University of Chinese Academy of Sciences , Beijing, China 100049
| | - Rong-Na Ma
- Group of Cell Motility and Muscle Contraction, State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences , Beijing, China 100101
| | - Aibing Wang
- Laboratory of Animal Models & Functional Genomics (LAMFG), Research Center of Reverse Vaccinology (RCRV), College of Veterinary Medicine, Hunan Agricultural University , Changsha, Hunan, China 410128
| | - Xiang-Dong Li
- Group of Cell Motility and Muscle Contraction, State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences , Beijing, China 100101.,University of Chinese Academy of Sciences , Beijing, China 100049
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Ni T, Liu Y, Huang Y, Sun X, Wang J, Wang YD. Hysteroscopy combined dilatation and curettage, serum CA125 and CA19-9 play an important role in preserving fertility or endocrine function for early-stage endometrial cancer patients. EUR J GYNAECOL ONCOL 2017; 38:49-53. [PMID: 29767864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVE The aim of the study was to evaluate the role of hysteroscopy combined dilatation and curettage (D&C), serum CA125 and CA19-9 in endometrial cancer (EC) patients who desire to preserve fertility or endocrine function. MATERIALS AND METHODS This retrospective study included a total of 622 patients with EC between January 2006 and December 2014. The consistency of preoperative and postoperative histopathological findings were compared in patients who underwent D&C with or without hysteroscopy. The incidence of positive peritoneal cytology was also compared to assess the safety of hysteroscopy. Receiver operating characteristic (ROC) curve was used to evaluate the role of preoperative serum CA125 and CA19-9 in predicting extrauterine metastasis. RESULTS In 151 patients who underwent hysteroscopy combined D&C, the consistency of pre- and postoperative pathology was higher than the remaining 447 patients who underwent classical D&C alone (83.44% vs. 74.94%,p < 0.05) and there was no significant difference in the incidence of positive peritoneal cytology between the two groups (2.64% vs. 2.73%, p > 0.05). ROC curve analysis results showed the CA125 serum level of 31.75 U/ml and CA19-9 serum level of 35.40 U/ml were the best cutoff to predict extrauterine metastasis in endometrial cancer, with 66.7% sensitivity, 83% specificity, and 61.9% sensitivity and 84.9% of specificity, respectively. CONCLUSIONS Hysteroscopy combined D&C should be recommended for early-stage EC patients who desire to preserve fertility or endocrine function, and the preoperative serum levels of CA125 and CA19-9 were powerful in predicting tumor stage in these patients.
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Ni T, Sun X, Shan B, Wang J, Liu Y, Gu SL, Wang YD. Detection of circulating tumour cells may add value in endometrial cancer management. Eur J Obstet Gynecol Reprod Biol 2016; 207:1-4. [PMID: 27756035 DOI: 10.1016/j.ejogrb.2016.09.031] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [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: 06/12/2016] [Revised: 08/02/2016] [Accepted: 09/21/2016] [Indexed: 11/17/2022]
Abstract
OBJECTIVE To evaluate the role of circulating tumour cells (CTCs) in patients with endometrial cancer (EC). STUDY DESIGN This study included 40 patients with a pre-operative diagnosis of high-risk EC between April 2015 and May 2016. Patients were further divided into high-risk (grade 3, non-endometrioid, myometrial invasion ≥1/2 and stage III-IV) and high-intermediate-risk (grade 2-3, endometrioid, myometrial invasion <1/2 and stage I-II) groups according to postoperative pathological results. CTCs were detected using the CellSearch system, and CTC results were correlated with standard clinicopathological characteristics and serum tumour marker CA125/HE4 status using Chi-squared test, continuity correction or Fisher's exact test. The pharmacodynamic effect was detected after the first cycle of adjuvant therapy. Patients were followed up for 13 months to assess outcomes. RESULTS Fifteen percent of patients had one or more CTCs. The presence of CTCs was found to be significantly associated with cervical involvement (83.33% vs 11.76%, p=0.00). No significant difference in CTC-positive rates was detected between the high-risk and high-intermediate-risk groups, and no significant correlation was found between CTCs and serum CA125/HE4, either by positive rates or exact serum levels of the conventional tumour markers. No more CTCs were detected after the first cycle of standard chemotherapy in this study, and no distant metastases or recurrence were found in the CTC-positive patients during the follow-up period. CONCLUSION The presence of CTCs was correlated with cervical involvement. Early-stage EC patients with CTCs may benefit from additional adjuvant therapies. Assessment of CTCs may be useful in the management of high-risk EC patients.
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MESH Headings
- Adult
- Aged
- Biomarkers, Tumor/blood
- CA-125 Antigen/blood
- Carcinoma, Endometrioid/blood
- Carcinoma, Endometrioid/pathology
- Carcinoma, Endometrioid/secondary
- Carcinoma, Endometrioid/therapy
- Cervix Uteri/drug effects
- Cervix Uteri/pathology
- Cervix Uteri/surgery
- Chemotherapy, Adjuvant
- Cystadenocarcinoma, Serous/blood
- Cystadenocarcinoma, Serous/pathology
- Cystadenocarcinoma, Serous/secondary
- Cystadenocarcinoma, Serous/therapy
- Endometrial Neoplasms/blood
- Endometrial Neoplasms/pathology
- Endometrial Neoplasms/prevention & control
- Endometrial Neoplasms/therapy
- Endometrium/drug effects
- Endometrium/pathology
- Endometrium/surgery
- Female
- Follow-Up Studies
- Humans
- Membrane Proteins/blood
- Middle Aged
- Myometrium/drug effects
- Myometrium/pathology
- Myometrium/surgery
- Neoplasm Grading
- Neoplasm Invasiveness
- Neoplasm Recurrence, Local/prevention & control
- Neoplasm Staging
- Neoplastic Cells, Circulating/drug effects
- Neoplastic Cells, Circulating/pathology
- Proteins/analysis
- Uterine Cervical Neoplasms/drug therapy
- Uterine Cervical Neoplasms/prevention & control
- Uterine Cervical Neoplasms/secondary
- Uterine Cervical Neoplasms/surgery
- Uterine Neoplasms/drug therapy
- Uterine Neoplasms/prevention & control
- Uterine Neoplasms/secondary
- Uterine Neoplasms/surgery
- WAP Four-Disulfide Core Domain Protein 2
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Affiliation(s)
- T Ni
- Department of Gynaecology, International Peace Maternity and Child Health Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - X Sun
- Laboratory of Gynaecologic Oncology, International Peace Maternity and Child Health Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - B Shan
- Fudan University Shanghai Cancer Centre, Shanghai, China
| | - J Wang
- Department of Gynaecology, International Peace Maternity and Child Health Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Y Liu
- Department of Gynaecology, International Peace Maternity and Child Health Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - S-L Gu
- Department of Gynaecology, International Peace Maternity and Child Health Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Y-D Wang
- Department of Gynaecology, International Peace Maternity and Child Health Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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Zajic S, Rossenu S, Hreniuk D, Kesisoglou F, McCrea J, Liu F, Sun L, Witter R, Gauthier D, Helmy R, Joss D, Ni T, Stoltz R, Stone J, Stoch SA. The Absolute Bioavailability and Effect of Food on the Pharmacokinetics of Odanacatib: A Stable-Label i.v./Oral Study in Healthy Postmenopausal Women. Drug Metab Dispos 2016; 44:1450-8. [DOI: 10.1124/dmd.116.069906] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Accepted: 07/08/2016] [Indexed: 11/22/2022] Open
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Wu QY, Li WW, Li N, Li TF, Zhang C, Ni T, Cui YX, Li XJ, Xia XY. A novel nonsense mutation of ADAR1 gene in a Chinese patient with dyschromatosis symmetrica hereditaria. J Eur Acad Dermatol Venereol 2014; 28:1832-3. [PMID: 24673593 DOI: 10.1111/jdv.12381] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Q-Y Wu
- Institute of Laboratory Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
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Abstract
This study aimed to identify marker genes in diabetic wounds using a dataset based on a DNA microarray of dermal lymphatic endothelial cells, and our results provide a basic understanding of diabetic wounds through further study of these differentially expressed genes (DEGs). From the Gene Expression Omnibus database, we downloaded a gene expression microarray (GSE38396) that includes 8 samples: 4 normal controls and 4 disease samples (type II diabetes). We then identified genes that were differentially expressed between normal and disease samples using packages in R language, constructed a protein-protein interaction (PPI) network and analyzed modules in the network. In addition, phylogenetic analysis was performed by MEGA to find the most conserved genes. Two hundred and thirteen genes were identified as being differentially expressed between normal and disease samples, and we constructed a PPI network that included 213 pairs of proteins. We then identified a module including 20 genes, the function of which was significantly enriched in wounding response. Lastly, the most conserved genes, CD44 and CCL5, were identified through phylogenetic analysis. In summary, we found differentially expressed marker genes, a wounding response-related module, and the most important genes CD44 and CCL5. Our findings suggest new approaches to therapies for diabetic wounds.
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Affiliation(s)
- T Ni
- Department of Burn and Plastic Surgery, No. 3 People's Hospital and Institute of Traumatic Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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Cui YX, Xia XY, Zhou Y, Gao L, Shang XJ, Ni T, Wang WP, Fan XB, Yin HL, Jiang SJ, Yao B, Hu YA, Wang G, Li XJ. Novel mutations of ABCB6 associated with autosomal dominant dyschromatosis universalis hereditaria. PLoS One 2013; 8:e79808. [PMID: 24224009 PMCID: PMC3818219 DOI: 10.1371/journal.pone.0079808] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Accepted: 09/25/2013] [Indexed: 11/18/2022] Open
Abstract
Objective Dyschromatosis universalis hereditaria (DUH) is a rare heterogeneous pigmentary genodermatosis, which was first described in 1933. The genetic cause has recently been discovered by the discovery of mutations in ABCB6. Here we investigated a Chinese family with typical features of autosomal dominant DUH and 3 unrelated patients with sporadic DUH. Methods Skin tissues were obtained from the proband, of this family and the 3 sporadic patients. Histopathological examination and immunohistochemical analysis of ABCB6 were performed. Peripheral blood DNA samples were obtained from 21 affected, 14 unaffected, 11 spouses in the family and the 3 sporadic patients. A genome-wide linkage scan for the family was carried out to localize the causative gene. Exome sequencing was performed from 3 affected and 1 unaffected in the family. Sanger sequencing of ABCB6 was further used to identify the causative gene for all samples obtained from available family members, the 3 sporadic patients and a panel of 455 ethnically-matched normal Chinese individuals. Results Histopathological analysis showed melanocytes in normal control’s skin tissue and the hyperpigmented area contained more melanized, mature melanosomes than those within the hypopigmented areas. Empty immature melanosomes were found in the hypopigmented melanocytes. Parametric multipoint linkage analysis produced a HLOD score of 4.68, with markers on chromosome 2q35-q37.2. A missense mutation (c.1663 C>A, p.Gln555Lys) in ABCB6 was identified in this family by exome and Sanger sequencing. The mutation perfectly cosegregated with the skin phenotype. An additional mutation (g.776 delC, c.459 delC) in ABCB6 was found in an unrelated sporadic patient. No mutation in ABCB6 was discovered in the other two sporadic patients. Neither of the two mutations was present in the 455 controls. Melanocytes showed positive immunoreactivity to ABCB6. Conclusion Our data add new variants to the repertoire of ABCB6 mutations with DUH.
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Affiliation(s)
- Ying-Xia Cui
- Institute of Laboratory Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing, PR China
| | - Xin-Yi Xia
- Institute of Laboratory Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing, PR China
| | - Yang Zhou
- Institute of Laboratory Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing, PR China
| | - Lin Gao
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, PR China
| | - Xue-Jun Shang
- Institute of Laboratory Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing, PR China
| | - Tong Ni
- Department of Dermatology, Jinling Hospital, Nanjing University School of Medicine, Nanjing, PR China
| | - Wei-Ping Wang
- Institute of Laboratory Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing, PR China
| | - Xiao-Buo Fan
- Institute of Laboratory Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing, PR China
| | - Hong-Lin Yin
- Department of Pathology, Jinling Hospital, Nanjing University School of Medicine, Nanjing, PR China
| | - Shao-Jun Jiang
- Department of Pathology, Jinling Hospital, Nanjing University School of Medicine, Nanjing, PR China
| | - Bing Yao
- Institute of Laboratory Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing, PR China
| | - Yu-An Hu
- Institute of Laboratory Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing, PR China
| | - Gang Wang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, PR China
| | - Xiao-Jun Li
- Institute of Laboratory Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing, PR China
- * E-mail:
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Wang CN, Zhao FX, Ni T, Zhou HB, Lu ZF, Shi QL. [Clinicopathological analysis of Paget's disease of the scrotum and penis]. Zhonghua Nan Ke Xue 2008; 14:810-814. [PMID: 18998465] [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: 05/27/2023]
Abstract
OBJECTIVE To investigate the clinical pathological characteristics, diagnosis and differential diagnosis of Paget's disease of the scrotum and penis. METHODS Thirteen cases of Paget's disease of the scrotum and penis were analyzed by light microscopy, alcian-blue (AB)/periodic-acid-Schiff (PAS) and immunohistochemical staining. RESULTS Paget's disease of the scrotum and penis mainly affected old individuals aged 55-84 (mean 71) years. Macroscopically, typical presentations of Paget's disease of the scrotum and penis were eczematoid lesions. Microscopically, Paget cells were distributed singly or in groups (as strands, nests or glandular patterns) within the epidermis. Paget cells were typically stained for AB/PAS, positive for CK7, CEA and EMA, and negative for CK5/6, S-100 and P63. The positive rates of GCDFP-15 and CK20 expressions were 76.92% (10/13)and 53.85% (7/13) respectively. CONCLUSION Paget's disease of the scrotum and penis is a low-malignancy cutaneous tumor with typical clinical and pathological features. Pathologic diagnosis is based on immunohistochemical findings.
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Affiliation(s)
- Chun-Nian Wang
- Department of Pathology, Nanjing General Hospital of Nanjing Military Region, Nanjing, Jiangsu 210002, China
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Ni T, Nagesha DK, Robles J, Materer NF, Müssig S, Kotov NA. CdS nanoparticles modified to chalcogen sites: new supramolecular complexes, butterfly bridging, and related optical effects. J Am Chem Soc 2002; 124:3980-92. [PMID: 11942837 DOI: 10.1021/ja017149a] [Citation(s) in RCA: 44] [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] [Indexed: 11/28/2022]
Abstract
All present approaches to surface modification of nanoparticles (NPs) with organic ligands exploit metal (cadmium) sites as anchor points. To obtain efficient interaction of NP surface with p-orbitals of organic chromophores, we utilize the chalcogen (sulfur) sites on the NP surface. These sites present several advantages stemming from a stronger interaction of their atomic orbitals with both modifier and NP core. The chalcogen modification of CdS was achieved by using a mixed ligand (2,2'-bipyridyl-N,N')(malonato-O,O')-copper(II) monohydrate complex. The weak monodentate ligands (water) are replaced by a copper-sulfur bond during the modification reaction. The structure of the product was investigated by optical spectroscopy, electron spin resonance, and nuclear magnetic resonance. The modified NP can be described as a few tens (<40) of (2,2'-bipyridyl-N,N')(malonato-O,O')-copper units attached to the CdS core. Steady-state and time-resolved luminescence measurements, molecular orbital calculations, and UPS data indicate that delocalized surface states enveloping the surface chalcogen atoms of NP, transition metal, and p-orbitals of the bipyridine ligand are present in the synthesized species. The delocalized states are made possible due to the bridging of p-levels of sulfur and pi-orbitals of bipyridine by butterfly d-orbitals of the transition metal atom placed between them. Chalcogen-modified NP can be considered as a new member of the family of supramolecular compounds based on transition metal complexes. Both NP and metal complex parts of the prepared supramolecules are very versatile structural units, and new molecular constructs of similar design, in which quantum effects of NPs are combined with optical properties of transition metal complexes, can be obtained with different NPs and metal complexes.
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Affiliation(s)
- Tong Ni
- Chemistry Department, Oklahoma State University, Stillwater, Oklahoma 74078, USA
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Nagesha DK, Liang X, Mamedov AA, Gainer G, Eastman MA, Giersig M, Song JJ, Ni T, Kotov NA. In2S3 Nanocolloids with Excitonic Emission: In2S3 vs CdS Comparative Study of Optical and Structural Characteristics. J Phys Chem B 2001. [DOI: 10.1021/jp011265i] [Citation(s) in RCA: 88] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dattatri K. Nagesha
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, Department of Physics, Center for Laser and Photonics Research, Oklahoma State University, Stillwater, Oklahoma 74078, and Hahn-Meitner-Institut, Abt. Physikalische Chemie, Glienickerstr. 100, D-15109, Berlin, Germany
| | - Xiaorong Liang
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, Department of Physics, Center for Laser and Photonics Research, Oklahoma State University, Stillwater, Oklahoma 74078, and Hahn-Meitner-Institut, Abt. Physikalische Chemie, Glienickerstr. 100, D-15109, Berlin, Germany
| | - Arif A. Mamedov
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, Department of Physics, Center for Laser and Photonics Research, Oklahoma State University, Stillwater, Oklahoma 74078, and Hahn-Meitner-Institut, Abt. Physikalische Chemie, Glienickerstr. 100, D-15109, Berlin, Germany
| | - Gordon Gainer
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, Department of Physics, Center for Laser and Photonics Research, Oklahoma State University, Stillwater, Oklahoma 74078, and Hahn-Meitner-Institut, Abt. Physikalische Chemie, Glienickerstr. 100, D-15109, Berlin, Germany
| | - Margaret A. Eastman
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, Department of Physics, Center for Laser and Photonics Research, Oklahoma State University, Stillwater, Oklahoma 74078, and Hahn-Meitner-Institut, Abt. Physikalische Chemie, Glienickerstr. 100, D-15109, Berlin, Germany
| | - Michael Giersig
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, Department of Physics, Center for Laser and Photonics Research, Oklahoma State University, Stillwater, Oklahoma 74078, and Hahn-Meitner-Institut, Abt. Physikalische Chemie, Glienickerstr. 100, D-15109, Berlin, Germany
| | - Jin-Joo Song
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, Department of Physics, Center for Laser and Photonics Research, Oklahoma State University, Stillwater, Oklahoma 74078, and Hahn-Meitner-Institut, Abt. Physikalische Chemie, Glienickerstr. 100, D-15109, Berlin, Germany
| | - Tong Ni
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, Department of Physics, Center for Laser and Photonics Research, Oklahoma State University, Stillwater, Oklahoma 74078, and Hahn-Meitner-Institut, Abt. Physikalische Chemie, Glienickerstr. 100, D-15109, Berlin, Germany
| | - Nicholas A. Kotov
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, Department of Physics, Center for Laser and Photonics Research, Oklahoma State University, Stillwater, Oklahoma 74078, and Hahn-Meitner-Institut, Abt. Physikalische Chemie, Glienickerstr. 100, D-15109, Berlin, Germany
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Diaz D, Robles J, Ni T, Castillo-Blum SE, Nagesha D, Alvarez-Fregoso OJ, Kotov NA. Surface Modification of CdS Nanoparticles with MoS42-: A Case Study of Nanoparticle−Modifier Electronic Interaction. J Phys Chem B 1999. [DOI: 10.1021/jp992122n] [Citation(s) in RCA: 21] [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: 11/29/2022]
Affiliation(s)
- David Diaz
- Department of Chemistry and Center for Laser and Photonics Research, Oklahoma State University, Stillwater, Oklahoma 74078; Facultad de Quñmica, Universidad Nacional Autónoma de Mexico, Coyoacan, Mexico D.F., 04510 Mexico; Facultad de Quñmica, University of Guanajuato, Noria Alta s/n, Guanajuato GTO, 36050 Mexico; and Instituto de Investigacion en Materiales, Universidad Nacional Autónoma de Mexico, Coyoacan, Mexico D.F., 04510 Mexico
| | - Juvencio Robles
- Department of Chemistry and Center for Laser and Photonics Research, Oklahoma State University, Stillwater, Oklahoma 74078; Facultad de Quñmica, Universidad Nacional Autónoma de Mexico, Coyoacan, Mexico D.F., 04510 Mexico; Facultad de Quñmica, University of Guanajuato, Noria Alta s/n, Guanajuato GTO, 36050 Mexico; and Instituto de Investigacion en Materiales, Universidad Nacional Autónoma de Mexico, Coyoacan, Mexico D.F., 04510 Mexico
| | - Tong Ni
- Department of Chemistry and Center for Laser and Photonics Research, Oklahoma State University, Stillwater, Oklahoma 74078; Facultad de Quñmica, Universidad Nacional Autónoma de Mexico, Coyoacan, Mexico D.F., 04510 Mexico; Facultad de Quñmica, University of Guanajuato, Noria Alta s/n, Guanajuato GTO, 36050 Mexico; and Instituto de Investigacion en Materiales, Universidad Nacional Autónoma de Mexico, Coyoacan, Mexico D.F., 04510 Mexico
| | - Silvia-Elena Castillo-Blum
- Department of Chemistry and Center for Laser and Photonics Research, Oklahoma State University, Stillwater, Oklahoma 74078; Facultad de Quñmica, Universidad Nacional Autónoma de Mexico, Coyoacan, Mexico D.F., 04510 Mexico; Facultad de Quñmica, University of Guanajuato, Noria Alta s/n, Guanajuato GTO, 36050 Mexico; and Instituto de Investigacion en Materiales, Universidad Nacional Autónoma de Mexico, Coyoacan, Mexico D.F., 04510 Mexico
| | - Datattri Nagesha
- Department of Chemistry and Center for Laser and Photonics Research, Oklahoma State University, Stillwater, Oklahoma 74078; Facultad de Quñmica, Universidad Nacional Autónoma de Mexico, Coyoacan, Mexico D.F., 04510 Mexico; Facultad de Quñmica, University of Guanajuato, Noria Alta s/n, Guanajuato GTO, 36050 Mexico; and Instituto de Investigacion en Materiales, Universidad Nacional Autónoma de Mexico, Coyoacan, Mexico D.F., 04510 Mexico
| | - Octavio-Jaime Alvarez-Fregoso
- Department of Chemistry and Center for Laser and Photonics Research, Oklahoma State University, Stillwater, Oklahoma 74078; Facultad de Quñmica, Universidad Nacional Autónoma de Mexico, Coyoacan, Mexico D.F., 04510 Mexico; Facultad de Quñmica, University of Guanajuato, Noria Alta s/n, Guanajuato GTO, 36050 Mexico; and Instituto de Investigacion en Materiales, Universidad Nacional Autónoma de Mexico, Coyoacan, Mexico D.F., 04510 Mexico
| | - Nicholas A. Kotov
- Department of Chemistry and Center for Laser and Photonics Research, Oklahoma State University, Stillwater, Oklahoma 74078; Facultad de Quñmica, Universidad Nacional Autónoma de Mexico, Coyoacan, Mexico D.F., 04510 Mexico; Facultad de Quñmica, University of Guanajuato, Noria Alta s/n, Guanajuato GTO, 36050 Mexico; and Instituto de Investigacion en Materiales, Universidad Nacional Autónoma de Mexico, Coyoacan, Mexico D.F., 04510 Mexico
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Diaz D, Rivera M, Ni T, Rodriguez JC, Castillo-Blum SE, Nagesha D, Robles J, Alvarez-Fregoso OJ, Kotov NA. Conformation of Ethylhexanoate Stabilizer on the Surface of CdS Nanoparticles. J Phys Chem B 1999. [DOI: 10.1021/jp992121v] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- David Diaz
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078; Facultad de Quimica, Universidad Nacional Autonoma de Mexico, Coyoacan, Mexico D.F., 04510 Mexico; Facultad de Química, University of Guanajuato, Noria Alta s/n, Guanajuato GTO, 36050 México; and Instituto de Investigacion en Materiales, Universidad Nacional Autonoma de Mexico, Coyoacan, Mexico D.F., 04510 Mexico
| | - Mario Rivera
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078; Facultad de Quimica, Universidad Nacional Autonoma de Mexico, Coyoacan, Mexico D.F., 04510 Mexico; Facultad de Química, University of Guanajuato, Noria Alta s/n, Guanajuato GTO, 36050 México; and Instituto de Investigacion en Materiales, Universidad Nacional Autonoma de Mexico, Coyoacan, Mexico D.F., 04510 Mexico
| | - Tong Ni
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078; Facultad de Quimica, Universidad Nacional Autonoma de Mexico, Coyoacan, Mexico D.F., 04510 Mexico; Facultad de Química, University of Guanajuato, Noria Alta s/n, Guanajuato GTO, 36050 México; and Instituto de Investigacion en Materiales, Universidad Nacional Autonoma de Mexico, Coyoacan, Mexico D.F., 04510 Mexico
| | - Juan-Carlos Rodriguez
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078; Facultad de Quimica, Universidad Nacional Autonoma de Mexico, Coyoacan, Mexico D.F., 04510 Mexico; Facultad de Química, University of Guanajuato, Noria Alta s/n, Guanajuato GTO, 36050 México; and Instituto de Investigacion en Materiales, Universidad Nacional Autonoma de Mexico, Coyoacan, Mexico D.F., 04510 Mexico
| | - Silvia-Elena Castillo-Blum
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078; Facultad de Quimica, Universidad Nacional Autonoma de Mexico, Coyoacan, Mexico D.F., 04510 Mexico; Facultad de Química, University of Guanajuato, Noria Alta s/n, Guanajuato GTO, 36050 México; and Instituto de Investigacion en Materiales, Universidad Nacional Autonoma de Mexico, Coyoacan, Mexico D.F., 04510 Mexico
| | - Dattatri Nagesha
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078; Facultad de Quimica, Universidad Nacional Autonoma de Mexico, Coyoacan, Mexico D.F., 04510 Mexico; Facultad de Química, University of Guanajuato, Noria Alta s/n, Guanajuato GTO, 36050 México; and Instituto de Investigacion en Materiales, Universidad Nacional Autonoma de Mexico, Coyoacan, Mexico D.F., 04510 Mexico
| | - Juvencio Robles
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078; Facultad de Quimica, Universidad Nacional Autonoma de Mexico, Coyoacan, Mexico D.F., 04510 Mexico; Facultad de Química, University of Guanajuato, Noria Alta s/n, Guanajuato GTO, 36050 México; and Instituto de Investigacion en Materiales, Universidad Nacional Autonoma de Mexico, Coyoacan, Mexico D.F., 04510 Mexico
| | - Octavio-Jaime Alvarez-Fregoso
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078; Facultad de Quimica, Universidad Nacional Autonoma de Mexico, Coyoacan, Mexico D.F., 04510 Mexico; Facultad de Química, University of Guanajuato, Noria Alta s/n, Guanajuato GTO, 36050 México; and Instituto de Investigacion en Materiales, Universidad Nacional Autonoma de Mexico, Coyoacan, Mexico D.F., 04510 Mexico
| | - Nicholas A. Kotov
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078; Facultad de Quimica, Universidad Nacional Autonoma de Mexico, Coyoacan, Mexico D.F., 04510 Mexico; Facultad de Química, University of Guanajuato, Noria Alta s/n, Guanajuato GTO, 36050 México; and Instituto de Investigacion en Materiales, Universidad Nacional Autonoma de Mexico, Coyoacan, Mexico D.F., 04510 Mexico
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Ni T, Pinson JA, Gupta S, Santoro RJ. Two-dimensional imaging of soot volume fraction by the use of laser-induced incandescence. Appl Opt 1995; 34:7083-7091. [PMID: 21060570 DOI: 10.1364/ao.34.007083] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A recently developed laser-induced incandescence technique is used to make novel planar measurements of soot volume fraction within turbulent diffusion flames and droplet flames. The two-dimensional imaging technique is developed and assessed by systematic experiments in a coannular laminar diffusion flame, in which the soot characteristics have been well established. With a single point calibration procedure, agreement to within 10% was found between the values of soot volume fraction measured by this technique and those determined by conventional laser scattering-extinction methods in the flame. As a demonstration of the wide range of applicability of the technique, soot volume fraction images are also obtained from both turbulent ethene diffusion flames and from a freely falling droplet flame that burns the mixture of 75% benzene and 25% methanol. For the turbulent diffusion flames, approximately an 80% reduction in soot volume fraction was found when the Reynolds number of the fuel jet increased from 4000 to 8000. In the droplet flame case, the distribution of soot field was found to be similar to that observed in coannular laminar diffusion flames.
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Dai S, Qi S, Zhang L, Bai C, Ni T, Deng X. Laser Raman spectrometry study on experimental galactose-induced cataract. Yan Ke Xue Bao 1995; 11:143-6. [PMID: 8758842] [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: 02/02/2023]
Abstract
PURPOSE To observe the dynamic changes of hydration in galactose induced cataract. METHODS Two groups of Wistar rats were used in the experiment. There were 12 rats in the experimental group, which were fed diet of 50% D-Galactose standard feed; while the control group had 8 rats fed standard feed. Their other living conditions were the same. At desired time periods, two Wistar rats fed galactose and one normal control were selected and killed 20 minutes before the instrument examination respectively, then, their lenses were removed from the orbs by a posterior approach. The cleaned fresh lens was placed in a quartz cuvette with Tris buffered balanced salt solution containing 5.5 mmol/L glucose. The quartz cuvette was placed on the stage of the Spectrometer. The laser beam was focused at the lens nuclear from the bottom of the cuvette and the scattered light was collected at 90 degrees to the incident beam. RESULTS Raman spectroscopy showed that (1) during the formation of galactose cataract, the water signal (at 3390cm-1) increased obviously, and the ratio of I3390/I2935 increased from 0.31 (3 days) to 2.26 (17 days), which is correlated with the imbibition of water in the lens nuclear; (2) the hydration of lens nuclear could be divided into two phases. The ratio I3390/I2935 was increased slowly and steadily by 11 days after galactose feeding. Then, the ratio turned to increase quite fast till 17 days. CONCLUSION The hydration of nuclear is changed simultaneously with the formation of cataract. The hydration of nuclear is mainly due to the imbalance of Na+/K+.
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Affiliation(s)
- S Dai
- Department of Ophthalmology, First Affiliated Hospital, Lan Zhou Medical College, China
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Snyder RO, Im DS, Ni T, Xiao X, Samulski RJ, Muzyczka N. Features of the adeno-associated virus origin involved in substrate recognition by the viral Rep protein. J Virol 1993; 67:6096-104. [PMID: 8396670 PMCID: PMC238031 DOI: 10.1128/jvi.67.10.6096-6104.1993] [Citation(s) in RCA: 102] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
We previously demonstrated that the adeno-associated virus (AAV) Rep68 and Rep78 proteins are able to nick the AAV origin of DNA replication at the terminal resolution site (trs) in an ATP-dependent manner. Using four types of modified or mutant substrates, we now have investigated the substrate requirements of Rep68 in the trs endonuclease reaction. In the first kind of substrate, portions of the hairpinned AAV terminal repeat were deleted. Only deletions that retained virtually all of the small internal palindromes of the AAV terminal repeat were active in the endonuclease reaction. This result confirmed previous genetic and biochemical evidence that the secondary structure of the terminal repeat was an important feature for substrate recognition. In the second type of substrate, the trs was moved eight bases further away from the end of the genome. The mutant was nicked at a 50-fold-lower frequency relative to a wild-type origin, and the nick occurred at the correct trs sequence despite its new position. This finding indicated that the endonuclease reaction required a specific sequence at the trs in addition to the correct secondary structure. It also suggested that the minimum trs recognition sequence extended three bases from the cut site in the 3' direction. The third type of substrate harbored mismatched base pairs at the trs. The mismatch substrates contained a wild-type sequence on the strand normally cut but an incorrect sequence on the complementary strand. All of the mismatch mutants were capable of being nicked in the presence of ATP. However, there was substantial variation in the level of activity, suggesting that the sequence on the opposite strand may also be recognized during nicking. Analysis of the mismatch mutants also suggested that a single-stranded trs was a viable substrate for the enzyme. This interpretation was confirmed by analysis of the fourth type of substrate tested, which contained a single-stranded trs. This substrate was also cleaved efficiently by the enzyme provided that the correct strand was present in the substrate. In addition, the single-stranded substrate no longer required ATP as a cofactor for nicking. Finally, all of the substrates with mutant trss bound the Rep protein as efficiently as the wild-type did. This finding indicated that the sequence at the cut site was not involved in recognition of the terminal repeat for specific binding by the enzyme. We concluded that substrate recognition by the AAV Rep protein involves at least two and possibly as many as four features of the AAV terminal repeat.(ABSTRACT TRUNCATED AT 400 WORDS)
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Affiliation(s)
- R O Snyder
- Department of Microbiology, State University of New York at Stony Brook Medical School 11794-8621
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Xu RM, Ni T, Xu XD. Two new species of Tabanus from Hubei, China (Diptera: Tabanidae). Acta Acad Med Wuhan 1984; 4:229-230. [PMID: 6527847 DOI: 10.1007/bf02857169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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