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Xie J, Ma R, Li M, Li B, Xiong L. [Effect of intestinal nitrate on growth of Klebsiella pneumoniae and its regulatory mechanism]. Nan Fang Yi Ke Da Xue Xue Bao 2024; 44:757-764. [PMID: 38708510 DOI: 10.12122/j.issn.1673-4254.2024.04.18] [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] [Subscribe] [Scholar Register] [Indexed: 05/07/2024]
Abstract
OBJECTIVE To explore the effect of intestinal nitrates on the growth of Klebsiella pneumoniae and its regulatory mechanisms. METHODS K. pneumoniae strains with nitrate reductase narG and narZ single or double gene knockout or with NarXL gene knockout were constructed and observed for both aerobic and anaerobic growth in the presence of KNO3 using an automated bacterial growth analyzer and a spectrophotometer, respectively. The mRNA expressions of narG and narZ in K. pneumoniae in anaerobic cultures in the presence of KNO3 and the effect of the binary regulatory system NarXL on their expresisons were detected using qRT-PCR. Electrophoretic mobility shift assays (EMSA) and MST analysis were performed to explore the specific regulatory mechanisms of NarXL in sensing and utilizing nitrates. Competitive experiments were conducted to examine anaerobic growth advantages of narG and narZ gene knockout strains of K. pneumoniae in the presence of KNO3. RESULTS The presence of KNO3 in anaerobic conditions, but not in aerobic conditions, promoted bacterial growth more effectively in the wild-type K. pneumoniae strain than in the narXL gene knockout strain. In anaerobic conditions, the narXL gene knockout strain showed significantly lowered mRNA expressions of narG and narZ (P < 0.0001). EMSA and MST experiments demonstrated that the NarXL regulator could directly bind to narG and narZ promoter regions. The wild-type K. pneumoniae strain in anaerobic cultures showed significantly increased expressions of narG and narZ mRNAs in the presence of KNO3 (P < 0.01), and narG gene knockout resulted in significantly attenuated anaerobic growth and competitive growth abilities of K. pneumoniae in the presence of KNO3 (P < 0.01). CONCLUSION The binary regulatory system NarXL of K. pneumoniae can sense changes in intestinal nitrate concentration and directly regulate the expression of nitrate reductase genes narG and narZ to promote bacterial growth.
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Affiliation(s)
- J Xie
- School of Basic Medical Sciences, Hubei University of Medicine, Shiyan 442000, China
| | - R Ma
- School of Basic Medical Sciences, Hubei University of Medicine, Shiyan 442000, China
| | - M Li
- School of Basic Medical Sciences, Hubei University of Medicine, Shiyan 442000, China
| | - B Li
- School of Basic Medical Sciences, Hubei University of Medicine, Shiyan 442000, China
| | - L Xiong
- Department of Gastroenterology, Liyuan Hospital Affiliated to Tongji Medical College of Huazhong University of Science and Technology, Wuhan 430077, China
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2
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Xiong Y, Wang W, Qin F, Xiong L. The predictive role of hematological inflammatory markers on the prognosis of kidney injury. Int J Surg 2024; 110:2453-2454. [PMID: 38668668 PMCID: PMC11020026 DOI: 10.1097/js9.0000000000001072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 12/23/2023] [Indexed: 04/29/2024]
Affiliation(s)
- Yang Xiong
- Department of Urology and Andrology Laboratory, West China Hospital, Sichuan University
| | - Wei Wang
- Department of Urology and Andrology Laboratory, West China Hospital, Sichuan University
| | - Feng Qin
- Department of Urology and Andrology Laboratory, West China Hospital, Sichuan University
| | - Liling Xiong
- Department of Obstetrics, Chengdu Women’s and Children’s Center Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, People’s Republic of China
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Mei Y, Wang Y, Zhang Q, Xiong L, Xu L, Hou Q, Chen J, He L, Lin Y. Gasless transvaginal natural orifice transluminal endoscopic surgery for hysterectomy and salpingectomy on a robot platform with flexible devices in a porcine model. Sci Rep 2024; 14:5366. [PMID: 38438509 PMCID: PMC10912522 DOI: 10.1038/s41598-024-55576-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 02/25/2024] [Indexed: 03/06/2024] Open
Abstract
In this report, we described a new technique of gasless V-NOTES for hysterectomy and salpingectomy on a robotic platform with flexible devices in a porcine model. As a result, the gynecological procedures were successfully completed. The total operative time was 110 min, while the docking time was 10 min. The estimated blood loss was estimated to be 10 mL with no intraoperative complications. It revealed that gasless V-NOTES for hysterectomy and salpingectomy on a robotic platform with flexible devices appeared to be feasible and safe in the porcine model and has the potential for clinical use in human beings.
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Affiliation(s)
- Youwen Mei
- Department of Gynaecology and Obstetrics, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Yanjun Wang
- Department of Gynaecology and Obstetrics, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Qiang Zhang
- Department of Gynaecology and Obstetrics, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Liling Xiong
- Department of Gynaecology and Obstetrics, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Li Xu
- Department of Gynaecology and Obstetrics, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Qiannan Hou
- Department of Gynaecology and Obstetrics, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Jiaojiao Chen
- Department of Gynaecology and Obstetrics, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Li He
- Department of Gynaecology and Obstetrics, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Yonghong Lin
- Department of Gynaecology and Obstetrics, Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 611731, China.
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Tang M, Xiong L, Cai J, Fu J, Liu H, Ye Y, Yang L, Xing S, Yang X. Intrahepatic cholestasis of pregnancy: insights into pathogenesis and advances in omics studies. Hepatol Int 2024; 18:50-62. [PMID: 37957532 DOI: 10.1007/s12072-023-10604-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Accepted: 09/28/2023] [Indexed: 11/15/2023]
Abstract
Intrahepatic cholestasis of pregnancy (ICP) is the most common pregnancy-specific liver disease. It is characterized by pruritus, abnormal liver function and elevated total bile acid (TBA) levels, increasing the risk of maternal and fetal adverse outcomes. Its etiology remains poorly elucidated. Over the years, various omics techniques, including metabolomics, microbiome, genomics, etc., have emerged with the advancement of bioinformatics, providing a new direction for exploring the pathogenesis, diagnosis and treatment of ICP. In this review, we first summarize the role of bile acids and related components in the pathogenesis of ICP and then further illustrate the results of omics studies.
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Affiliation(s)
- Mi Tang
- GCP Institution, School of Medicine, Chengdu Women's and Children's Central Hospital, University of Electronic Science and Technology of China, Chengdu, 611731, China
- School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Liling Xiong
- Obstetrics Department, School of Medicine, Chengdu Women's and Children's Central Hospital, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Jianghui Cai
- Department of Pharmacy, School of Medicine, Chengdu Women's and Children's Central Hospital, University of Electronic Science and Technology of China, Chengdu, 611731, China
- School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Jinzhu Fu
- Obstetrics Department, School of Medicine, Chengdu Women's and Children's Central Hospital, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Hong Liu
- Operating Theater, School of Medicine, Chengdu Women's and Children's Central Hospital, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Ying Ye
- Operating Theater, School of Medicine, Chengdu Women's and Children's Central Hospital, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Li Yang
- Obstetrics Department, School of Medicine, Chengdu Women's and Children's Central Hospital, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - ShaSha Xing
- GCP Institution, School of Medicine, Chengdu Women's and Children's Central Hospital, University of Electronic Science and Technology of China, Chengdu, 611731, China.
| | - Xiao Yang
- Obstetrics Department, School of Medicine, Chengdu Women's and Children's Central Hospital, University of Electronic Science and Technology of China, Chengdu, 611731, China.
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Zhang L, Tang M, Diao H, Xiong L, Yang X, Xing S. LncRNA-encoded peptides: unveiling their significance in cardiovascular physiology and pathology-current research insights. Cardiovasc Res 2023; 119:2165-2178. [PMID: 37517040 DOI: 10.1093/cvr/cvad112] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 06/17/2023] [Accepted: 06/30/2023] [Indexed: 08/01/2023] Open
Abstract
Long non-coding RNAs (lncRNAs), which are RNA transcripts exceeding 200 nucleotides were believed to lack any protein-coding capacity. But advancements in -omics technology have revealed that some lncRNAs have small open reading frames (sORFs) that can be translated by ribosomes to encode peptides, some of which have important biological functions. These encoded peptides subserve important biological functions by interacting with their targets to modulate transcriptional or signalling axes, thereby enhancing or suppressing cardiovascular disease (CVD) occurrence and progression. In this review, we summarize what is known about the research strategy of lncRNA-encoded peptides, mainly comprising predictive websites/tools and experimental methods that have been widely used for prediction, identification, and validation. More importantly, we have compiled a list of lncRNA- encoded peptides, with a focus on those that play significant roles in cardiovascular physiology and pathology, including ENSRNOT (RNO)-sORF6/RNO-sORF7/RNO-sORF8, dwarf open reading frame (DOWRF), myoregulin (NLN), etc. Additionally, we have outlined the functions and mechanisms of these peptides in cardiovascular physiology and pathology, such as cardiomyocyte hypertrophy, myocardial contraction, myocardial infarction, and vascular remodelling. Finally, an overview of the existing challenges and potential future developments in the realm of lncRNA-encoded peptides was provided, with consideration given to prospective avenues for further research. Given that many lncRNA-encoded peptides have not been functionally annotated yet, their application in CVD diagnosis and treatment still requires further research.
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Affiliation(s)
- Li Zhang
- Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, 1617 Riyue Street, Qingyang District, Chengdu 611731, China
- Hongqiao International Institute of Medicine, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200336, China
| | - Mi Tang
- Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, 1617 Riyue Street, Qingyang District, Chengdu 611731, China
| | - Haoyang Diao
- Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, 1617 Riyue Street, Qingyang District, Chengdu 611731, China
| | - Liling Xiong
- Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, 1617 Riyue Street, Qingyang District, Chengdu 611731, China
| | - Xiao Yang
- Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, 1617 Riyue Street, Qingyang District, Chengdu 611731, China
| | - Shasha Xing
- Chengdu Women's and Children's Central Hospital, School of Medicine, University of Electronic Science and Technology of China, 1617 Riyue Street, Qingyang District, Chengdu 611731, China
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Xiong L, Tang M, Xing S, Yang X. The role of noncoding RNA and its diagnostic potential in intrahepatic cholestasis of pregnancy: a research update. Front Genet 2023; 14:1239693. [PMID: 37900174 PMCID: PMC10611463 DOI: 10.3389/fgene.2023.1239693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 09/27/2023] [Indexed: 10/31/2023] Open
Abstract
Intrahepatic cholestasis of pregnancy (ICP) is a common liver disorder that generally occurs during the second or third trimester of pregnancy. It rarely causes any harm to the mother; however, it can result in short- and long-term complications in the offspring. Therefore, it is crucial to diagnose and treat this condition to avoid poor pregnancy outcomes. The identification of novel markers with potential diagnostic, prognostic, and therapeutic utility in ICP has gained attention. Noncoding RNAs (ncRNAs), including microRNA, long noncoding RNA, and circular RNA, are a type of transcripts that are not translated into proteins. They possess vital biological functions, including transcriptional and translational regulation and DNA, RNA, and protein interactions. The pathogenesis of ICP is related to the aberrant expression of several circulating or placenta-related ncRNAs. In this review, we summarized all recent findings on ncRNAs and ICP and outlined the concepts that form the basis for the early diagnosis and targeted treatment of ICP.
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Affiliation(s)
- Liling Xiong
- Obstetrics Department, Chengdu Women’s and Children’s Center Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Mi Tang
- GCP Institution, Chengdu Women’s and Children’s Center Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Shasha Xing
- GCP Institution, Chengdu Women’s and Children’s Center Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Xiao Yang
- Obstetrics Department, Chengdu Women’s and Children’s Center Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
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Li X, Li Y, Liu T, Ding R, Hou Q, Xiong L, Du N, Gong Z, Cheng L, Luo D, Wei S, Yang X. Epidemic history investigation: a new method of finding close contacts. Front Public Health 2023; 11:1062633. [PMID: 37427253 PMCID: PMC10323324 DOI: 10.3389/fpubh.2023.1062633] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 06/02/2023] [Indexed: 07/11/2023] Open
Abstract
Introduction Coronavirus disease 2019 has become a major global public health concern in December 2019. However, finding and excluding close contacts of COVID-19 infectors is a critical but difficult issue. This study aimed to introduce a new method of epidemiological investigation named space-time companions, which was adopted in Chengdu, China, in November 2021. Methods An observational investigation was conducted during a small outbreak of COVID-19 in Chengdu, China in November 2021. A new method of epidemiological investigation called space-time companion was adopted in this outbreak, which was defined as the one who stayed in the same spatiotemporal grid (range: 800 m * 800 m) with the confirmed COVID-19 infector for more than 10 min in the last 14 days. A flow chart was used to describe the screening process of space-time companions in detail and illustrate the space-time companion epidemic management method. Results The COVID-19 epidemic outbreak in Chengdu was effectively controlled for approximately one incubation period (14 days). After four rounds of space-time companions screening, more than 450,000 space-time companions were screened, including 27 COVID-19 infectors. Moreover, in the subsequent rounds of nucleic acid testing for all people in the city, no infected person were found proving the end of this epidemic outbreak. Conclusion The space-time companion provides a new idea for screening close contacts of the COVID-19 infector and other similar infectious diseases, which can serve as a supplement to traditional epidemiological history surveys to verify and avoid missing close contacts.
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Affiliation(s)
- Xin Li
- Chengdu Women’s and Children’s Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Yalan Li
- The Fourth People’s Hospital of Chengdu, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Tianjiao Liu
- Chengdu Women’s and Children’s Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Rui Ding
- First Clinical College, Chongqing Medical University, Chongqing, China
| | - Qiannan Hou
- Chengdu Women’s and Children’s Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Liling Xiong
- Chengdu Women’s and Children’s Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Na Du
- The Fourth People’s Hospital of Chengdu, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Zhaolin Gong
- Chengdu Women’s and Children’s Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Linbo Cheng
- Chengdu Women’s and Children’s Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Dan Luo
- Chengdu Women’s and Children’s Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Sumei Wei
- Chengdu Women’s and Children’s Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Xiao Yang
- Chengdu Women’s and Children’s Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
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Li Z, Xue T, Jietian J, Xiong L, Wei L, Guo S, Han H. Infiltrating pattern and prognostic value of tertiary lymphoid structures, and predicting the efficacy of anti-PD-1 combination therapy in patients with penile cancer. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00675-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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Zhang L, Xiong L, Fan L, Diao H, Tang M, Luo E, Guo W, Yang X, Xing S. Vascular lipidomics analysis reveales increased levels of phosphocholine and lysophosphocholine in atherosclerotic mice. Nutr Metab (Lond) 2023; 20:1. [PMID: 36600244 PMCID: PMC9811766 DOI: 10.1186/s12986-022-00723-y] [Citation(s) in RCA: 4] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 12/30/2022] [Indexed: 01/05/2023] Open
Abstract
OBJECTIVE Atherosclerosis (AS) is the major cause of cardiovascular disease, and dyslipidemia is a principal determinant of the initiation and progression of AS. Numerous works have analyzed the lipid signature of blood, but scarce information on the lipidome of vascular tissue is available. This study investigated the lipid profile in the aorta of ApoE-/- mice. METHOD ApoE-/- mice were randomly divided into two groups: (1) the normal diet (ND) group and (2) the high-fat diet (HFD) group. After feeding for 8 weeks, the plasma low-density lipoprotein (LDL), total cholesterol (TC), and triglyceride (TGs) levels were measured. UHPLC-Q Exactive plus MS was used to assess the lipid profile using both positive and negative ionization modes. RESULTS LDL and TC levels were significantly increased in HFD mice, and lipid deposition, plaque area and collagen fiber levels were increased in HFD group. In addition, a total of 131 differential lipids were characterized, including 57 lipids with levels that were increased in the HFD group and 74 with levels that were decreased. Further analysis revealed that the levels of several differentially expressed phosphocholines (PCs) and lysophosphocholines (LPCs) were significantly increased. These PCs included PC (38:3), PC (36:4), PC (36:3), PC (36:2), PC (36:1), PC (34:1e), PC (34:1), PC (32:1), PC (18:0/18:1), and PC (38:5), and the LPCs included LPC (18:1), LPC (18:0) and LPC (16:0). CONCLUSION Our findings indicate the presence of a comprehensive lipid profile in the vascular tissue of atherosclerotic mice, particularly involving PC and LPC, which exhibited significantly increased levels in AS.
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Affiliation(s)
- Li Zhang
- grid.54549.390000 0004 0369 4060Chengdu Women’s and Children’s Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 611731 China ,grid.16821.3c0000 0004 0368 8293Hongqiao International Institute of Medicine, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200336 China
| | - Liling Xiong
- grid.54549.390000 0004 0369 4060Chengdu Women’s and Children’s Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 611731 China
| | - Li Fan
- grid.54549.390000 0004 0369 4060Chengdu Women’s and Children’s Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 611731 China
| | - Haoyang Diao
- grid.54549.390000 0004 0369 4060Chengdu Women’s and Children’s Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 611731 China
| | - Mi Tang
- grid.54549.390000 0004 0369 4060Chengdu Women’s and Children’s Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 611731 China
| | - Erdan Luo
- grid.54549.390000 0004 0369 4060Chengdu Women’s and Children’s Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 611731 China
| | - Wenmei Guo
- grid.54549.390000 0004 0369 4060Chengdu Women’s and Children’s Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 611731 China
| | - Xiao Yang
- grid.54549.390000 0004 0369 4060Chengdu Women’s and Children’s Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 611731 China
| | - Shasha Xing
- grid.54549.390000 0004 0369 4060Chengdu Women’s and Children’s Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 611731 China
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Xu P, Zheng Y, Liao J, Hu M, Yang Y, Zhang B, Kilby MD, Fu H, Liu Y, Zhang F, Xiong L, Liu X, Jin H, Wu Y, Huang J, Han T, Wen L, Gao R, Fu Y, Fan X, Qi H, Baker PN, Tong C. AMPK regulates homeostasis of invasion and viability in trophoblasts by redirecting glucose metabolism: Implications for pre-eclampsia. Cell Prolif 2022; 56:e13358. [PMID: 36480593 PMCID: PMC9890534 DOI: 10.1111/cpr.13358] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 10/20/2022] [Accepted: 10/21/2022] [Indexed: 12/13/2022] Open
Abstract
Pre-eclampsia (PE) is deemed an ischemia-induced metabolic disorder of the placenta due to defective invasion of trophoblasts during placentation; thus, the driving role of metabolism in PE pathogenesis is largely ignored. Since trophoblasts undergo substantial glycolysis, this study aimed to investigate its function and regulatory mechanism by AMPK in PE development. Metabolomics analysis of PE placentas was performed by gas chromatography-mass spectrometry (GC-MS). Trophoblast-specific AMPKα1-deficient mouse placentas were generated to assess morphology. A mouse PE model was established by Reduced Uterine Perfusion Pressure, and placental AMPK was modulated by nanoparticle-delivered A769662. Trophoblast glucose uptake was measured by 2-NBDG and 2-deoxy-d-[3 H] glucose uptake assays. Cellular metabolism was investigated by the Seahorse assay and GC-MS.PE complicated trophoblasts are associated with AMPK hyperactivation due not to energy deficiency. Thereafter, AMPK activation during placentation exacerbated PE manifestations but alleviated cell death in the placenta. AMPK activation in trophoblasts contributed to GLUT3 translocation and subsequent glucose metabolism, which were redirected into gluconeogenesis, resulting in deposition of glycogen and accumulation of phosphoenolpyruvate; the latter enhanced viability but compromised trophoblast invasion. However, ablation of AMPK in the mouse placenta resulted in decreased glycogen deposition and structural malformation. These data reveal a novel homeostasis between invasiveness and viability in trophoblasts, which is mechanistically relevant for switching between the 'go' and 'grow' cellular programs.
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Affiliation(s)
- Ping Xu
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing MunicipalityThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina,Ministry of Education‐International Collaborative Laboratory of Reproduction and DevelopmentChongqing Medical UniversityChongqingChina,Biochemistry and Molecular BiologyUniversity of Texas McGovern Medical SchoolHoustonTexasUSA
| | - Yangxi Zheng
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing MunicipalityThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina,Ministry of Education‐International Collaborative Laboratory of Reproduction and DevelopmentChongqing Medical UniversityChongqingChina,Department of Stem Cell Transplantation and Cell TherapyMD Anderson Cancer CenterHoustonTexasUSA
| | - Jiujiang Liao
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing MunicipalityThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina,Ministry of Education‐International Collaborative Laboratory of Reproduction and DevelopmentChongqing Medical UniversityChongqingChina
| | - Mingyu Hu
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing MunicipalityThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina,Ministry of Education‐International Collaborative Laboratory of Reproduction and DevelopmentChongqing Medical UniversityChongqingChina
| | - Yike Yang
- Department of Gynecology and ObstetricsPeking University Third HospitalBeijingChina
| | - Baozhen Zhang
- Shenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdongChina
| | - Mark D. Kilby
- Institute of Metabolism and System ResearchUniversity of BirminghamEdgbastonUK
| | - Huijia Fu
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing MunicipalityThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina,Ministry of Education‐International Collaborative Laboratory of Reproduction and DevelopmentChongqing Medical UniversityChongqingChina
| | - Yamin Liu
- Department of ObstetricsWomen and Children's Hospital of Chongqing Medical UniversityChongqingChina
| | - Fumei Zhang
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing MunicipalityThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina,Ministry of Education‐International Collaborative Laboratory of Reproduction and DevelopmentChongqing Medical UniversityChongqingChina
| | - Liling Xiong
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing MunicipalityThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina,Ministry of Education‐International Collaborative Laboratory of Reproduction and DevelopmentChongqing Medical UniversityChongqingChina
| | - Xiyao Liu
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing MunicipalityThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina,Ministry of Education‐International Collaborative Laboratory of Reproduction and DevelopmentChongqing Medical UniversityChongqingChina
| | - Huili Jin
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing MunicipalityThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina,Ministry of Education‐International Collaborative Laboratory of Reproduction and DevelopmentChongqing Medical UniversityChongqingChina
| | - Yue Wu
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing MunicipalityThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina,Ministry of Education‐International Collaborative Laboratory of Reproduction and DevelopmentChongqing Medical UniversityChongqingChina
| | - Jiayu Huang
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing MunicipalityThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina,Ministry of Education‐International Collaborative Laboratory of Reproduction and DevelopmentChongqing Medical UniversityChongqingChina
| | - Tingli Han
- Ministry of Education‐International Collaborative Laboratory of Reproduction and DevelopmentChongqing Medical UniversityChongqingChina
| | - Li Wen
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing MunicipalityThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina,Ministry of Education‐International Collaborative Laboratory of Reproduction and DevelopmentChongqing Medical UniversityChongqingChina
| | - Rufei Gao
- Laboratory of Reproductive Biology, School of Public Health and ManagementChongqing Medical UniversityChongqingChina
| | - Yong Fu
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing MunicipalityThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina,Ministry of Education‐International Collaborative Laboratory of Reproduction and DevelopmentChongqing Medical UniversityChongqingChina
| | - Xiujun Fan
- Shenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdongChina
| | - Hongbo Qi
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing MunicipalityThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina,Ministry of Education‐International Collaborative Laboratory of Reproduction and DevelopmentChongqing Medical UniversityChongqingChina,Department of ObstetricsWomen and Children's Hospital of Chongqing Medical UniversityChongqingChina
| | | | - Chao Tong
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing MunicipalityThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina,Ministry of Education‐International Collaborative Laboratory of Reproduction and DevelopmentChongqing Medical UniversityChongqingChina
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11
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An X, Zang M, Xiong L, Ke H, Tao Y, Chen C, Li H. HX301, a potent CSF1R inhibitor, suppresses tumor associated M2 macrophage (TAM), enhancing tumor immunity and causing transit tumor inhibition in syngeneic EMT-6 tumors. Eur J Cancer 2022. [DOI: 10.1016/s0959-8049(22)01126-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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12
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Wen MK, Xiong L, Zheng B. Depinning phase transition of antiferromagnetic skyrmions with quenched disorder. Phys Rev E 2022; 106:044137. [PMID: 36397580 DOI: 10.1103/physreve.106.044137] [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] [Received: 01/23/2022] [Accepted: 10/03/2022] [Indexed: 06/16/2023]
Abstract
Antiferromagnetic skyrmions are considered to be promising information carriers due to their attractive properties. Therefore, the pinning phenomenon of antiferromagnetic skyrmions is of great significance. With the Landau-Lifshitz-Gilbert equation, we simulate the nonstationary dynamic behaviors of skyrmions driven by currents in a chiral antiferromagnetic thin film with quenched disorder. Based on the dynamic scaling forms, the critical current and static and dynamic critical exponents of the depinning phase transition are accurately determined. A theoretical analysis using Thiele's approach is presented in comparison with the numerical simulation. Unlike the ferromagnetic skyrmions, the critical current of the antiferromagnetic skyrmions is very sensitive to a small nonadiabatic coefficient. This is important for manipulating antiferromagnetic skyrmions and designing novel information processing devices.
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Affiliation(s)
- M K Wen
- Department of Physics, Zhejiang University, Hangzhou 310027, People's Republic of China
| | - L Xiong
- Department of Physics, Zhejiang University, Hangzhou 310027, People's Republic of China
- School of Physics and Astronomy, Yunnan University, Kunming 650091, People's Republic of China
| | - B Zheng
- Department of Physics, Zhejiang University, Hangzhou 310027, People's Republic of China
- School of Physics and Astronomy, Yunnan University, Kunming 650091, People's Republic of China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, People's Republic of China
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13
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Qi H, Xiong L, Tong C. Aging of the placenta. Aging (Albany NY) 2022; 14:5294-5295. [PMID: 35853249 PMCID: PMC9320537 DOI: 10.18632/aging.204175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 07/07/2022] [Indexed: 11/25/2022]
Affiliation(s)
- Hongbo Qi
- Department of Obstetrics, Women and Children’s Hospital of Chongqing Medical University, Chongqing 401147, China
- Department of Obstetrics, Chongqing Women and Children's Health Center, Chongqing 401147, China
| | - Liling Xiong
- Department of Gynaecology and Obstetrics, Chengdu Women’s and Children’s Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Chao Tong
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
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14
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Tang H, Xiong L, Zhou X, Zhao J. 140P Development and validation of nomograms based on clinical characteristics and CT reports for preoperative prediction of precision lymph node dissection in lung cancer. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.02.170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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15
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Xiong L, Ye X, Chen Z, Fu H, Li S, Xu P, Yu J, Wen L, Gao R, Fu Y, Qi H, Kilby MD, Saffery R, Baker PN, Tong C. Advanced Maternal Age-associated SIRT1 Deficiency Compromises Trophoblast Epithelial-Mesenchymal Transition through an Increase in Vimentin Acetylation. Aging Cell 2021; 20:e13491. [PMID: 34605151 PMCID: PMC8520724 DOI: 10.1111/acel.13491] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 09/05/2021] [Accepted: 09/19/2021] [Indexed: 12/12/2022] Open
Abstract
Advanced maternal age (AMA) pregnancies are rapidly increasing and are associated with aberrant trophoblast cell function, poor placentation, and unfavorable pregnancy outcomes, presumably due to premature placental senescence. SIRT1 is an NAD+ -dependent deacetylase with well-known antiaging effects, but its connection with placental senescence is unreported. In this study, human term placentas and first-trimester villi were collected from AMA and normal pregnancies, and a mouse AMA model was established by cross breeding young and aged male and female C57 mice. SIRT1 expression and activity in HTR8/SVneo cells were genetically or pharmacologically manipulated. Trophoblast-specific Sirt1-knockout (KO) mouse placentas were generated by mating Elf5-Cre and Sirt1fl/fl mice. Trophoblast cell mobility was assessed with transwell invasion and wound-healing assays. SIRT1-binding proteins in HTR8/SVneo cells and human placental tissue were identified by mass spectrometry. We identified SIRT1 as the only differentially expressed sirtuin between AMA and normal placentas. It is downregulated in AMA placentas early in the placental life cycle and is barely impacted by paternal age. SIRT1 loss upregulates P53 acetylation and P21 expression and impairs trophoblast invasion and migration. Sirt1-KO mouse placentas exhibit senescence markers and morphological disruption, along with decreased fetal weight. In trophoblasts, SIRT1 interacts with vimentin, regulating its acetylation. In conclusion, SIRT1 promotes trophoblast epithelial-mesenchymal transition (EMT) to enhance invasiveness by modulating vimentin acetylation. AMA placentas are associated with premature senescence during placentation due to SIRT1 loss. Therefore, SIRT1 may be an antiaging therapeutic target for improving placental development and perinatal outcomes in AMA pregnancies.
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Affiliation(s)
- Liling Xiong
- Department of Obstetrics The First Affiliated Hospital of Chongqing Medical University Chongqing China
- Ministry of Education‐International Collaborative Laboratory of Reproduction and Development Chongqing China
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality Chongqing China
| | - Xuan Ye
- Department of Obstetrics The First Affiliated Hospital of Chongqing Medical University Chongqing China
- Ministry of Education‐International Collaborative Laboratory of Reproduction and Development Chongqing China
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality Chongqing China
| | - Zhi Chen
- Department of Obstetrics The First Affiliated Hospital of Chongqing Medical University Chongqing China
- Ministry of Education‐International Collaborative Laboratory of Reproduction and Development Chongqing China
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality Chongqing China
| | - Huijia Fu
- Department of Obstetrics The First Affiliated Hospital of Chongqing Medical University Chongqing China
- Ministry of Education‐International Collaborative Laboratory of Reproduction and Development Chongqing China
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality Chongqing China
| | - Sisi Li
- Department of Obstetrics The First Affiliated Hospital of Chongqing Medical University Chongqing China
- Ministry of Education‐International Collaborative Laboratory of Reproduction and Development Chongqing China
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality Chongqing China
| | - Ping Xu
- Department of Obstetrics The First Affiliated Hospital of Chongqing Medical University Chongqing China
- Ministry of Education‐International Collaborative Laboratory of Reproduction and Development Chongqing China
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality Chongqing China
| | - Jiaxiao Yu
- Department of Obstetrics The First Affiliated Hospital of Chongqing Medical University Chongqing China
- Ministry of Education‐International Collaborative Laboratory of Reproduction and Development Chongqing China
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality Chongqing China
| | - Li Wen
- Department of Obstetrics The First Affiliated Hospital of Chongqing Medical University Chongqing China
- Ministry of Education‐International Collaborative Laboratory of Reproduction and Development Chongqing China
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality Chongqing China
| | - Rufei Gao
- Ministry of Education‐International Collaborative Laboratory of Reproduction and Development Chongqing China
- Laboratory of Reproductive Biology School of Public Health and Management Chongqing Medical University Chongqing China
| | - Yong Fu
- Department of Obstetrics The First Affiliated Hospital of Chongqing Medical University Chongqing China
- Ministry of Education‐International Collaborative Laboratory of Reproduction and Development Chongqing China
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality Chongqing China
| | - Hongbo Qi
- Department of Obstetrics The First Affiliated Hospital of Chongqing Medical University Chongqing China
- Ministry of Education‐International Collaborative Laboratory of Reproduction and Development Chongqing China
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality Chongqing China
| | - Mark D. Kilby
- Institute of Metabolism and System Research University of Birmingham Edgbaston UK
| | - Richard Saffery
- Ministry of Education‐International Collaborative Laboratory of Reproduction and Development Chongqing China
- Cancer, Disease and Developmental Epigenetics Murdoch Children’s Research Institute Parkville Victoria Australia
| | - Philip N. Baker
- College of Life Sciences University of Leicester Leicester UK
| | - Chao Tong
- Department of Obstetrics The First Affiliated Hospital of Chongqing Medical University Chongqing China
- Ministry of Education‐International Collaborative Laboratory of Reproduction and Development Chongqing China
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality Chongqing China
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16
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Chen Z, Xiong L, Jin H, Yu J, Li X, Fu H, Wen L, Qi H, Tong C, Saffery R, Kilby MD, Baker PN. Advanced maternal age causes premature placental senescence and malformation via dysregulated α-Klotho expression in trophoblasts. Aging Cell 2021; 20:e13417. [PMID: 34105233 PMCID: PMC8282245 DOI: 10.1111/acel.13417] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 05/20/2021] [Accepted: 05/24/2021] [Indexed: 12/20/2022] Open
Abstract
Advanced maternal age (AMA) pregnancy is associated with higher risks of adverse perinatal outcomes, which may result from premature senescence of the placenta. α-Klotho is a well-known antiaging protein; however, its expression and effect on the placenta in AMA pregnancies have not yet been fully elucidated. The expression patterns of α-Klotho in mouse and human placentas from AMA pregnancies were determined by Western blotting and immunohistochemistry (IHC) staining. α-Klotho expression in JAR cells was manipulated to investigate its role in trophoblastic senescence, and transwell assays were performed to assess trophoblast invasion. The downstream genes regulated by α-Klotho in JAR cells were first screened by mRNA sequencing in α-Klotho-knockdown and control JAR cells and then validated. α-Klotho-deficient mice were generated by injecting klotho-interfering adenovirus (Ad-Klotho) via the tail vein on GD8.5. Ablation of α-Klotho resulted in not only a senescent phenotype and loss of invasiveness in JAR cells but also a reduction in the transcription of cell adhesion molecule (CAM) genes. Overexpression of α-Klotho significantly improved invasion but did not alter the expression of senescence biomarkers. α-Klotho-deficient mice exhibited placental malformation and, consequently, lower placental and fetal weights. In conclusion, AMA results in reduced α-Klotho expression in placental trophoblasts, therefore leading to premature senescence and loss of invasion (possibly through the downregulation of CAMs), both of which ultimately result in placental malformation and adverse perinatal outcomes.
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Affiliation(s)
- Zhi Chen
- Department of ObstetricsThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing MunicipalityChongqing Medical UniversityChongqingChina
- International Collaborative Laboratory of Reproduction and Development of Chinese Ministry of EducationChongqing Medical UniversityChongqingChina
| | - Liling Xiong
- Department of ObstetricsThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing MunicipalityChongqing Medical UniversityChongqingChina
- International Collaborative Laboratory of Reproduction and Development of Chinese Ministry of EducationChongqing Medical UniversityChongqingChina
| | - Huili Jin
- Department of ObstetricsThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing MunicipalityChongqing Medical UniversityChongqingChina
- International Collaborative Laboratory of Reproduction and Development of Chinese Ministry of EducationChongqing Medical UniversityChongqingChina
| | - Jiaxiao Yu
- Department of ObstetricsThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing MunicipalityChongqing Medical UniversityChongqingChina
- International Collaborative Laboratory of Reproduction and Development of Chinese Ministry of EducationChongqing Medical UniversityChongqingChina
| | - Xin Li
- Department of ObstetricsThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing MunicipalityChongqing Medical UniversityChongqingChina
- International Collaborative Laboratory of Reproduction and Development of Chinese Ministry of EducationChongqing Medical UniversityChongqingChina
| | - Huijia Fu
- Department of ObstetricsThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing MunicipalityChongqing Medical UniversityChongqingChina
- International Collaborative Laboratory of Reproduction and Development of Chinese Ministry of EducationChongqing Medical UniversityChongqingChina
| | - Li Wen
- Department of ObstetricsThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing MunicipalityChongqing Medical UniversityChongqingChina
- International Collaborative Laboratory of Reproduction and Development of Chinese Ministry of EducationChongqing Medical UniversityChongqingChina
| | - Hongbo Qi
- Department of ObstetricsThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing MunicipalityChongqing Medical UniversityChongqingChina
- International Collaborative Laboratory of Reproduction and Development of Chinese Ministry of EducationChongqing Medical UniversityChongqingChina
| | - Chao Tong
- Department of ObstetricsThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing MunicipalityChongqing Medical UniversityChongqingChina
- International Collaborative Laboratory of Reproduction and Development of Chinese Ministry of EducationChongqing Medical UniversityChongqingChina
| | - Richard Saffery
- International Collaborative Laboratory of Reproduction and Development of Chinese Ministry of EducationChongqing Medical UniversityChongqingChina
- Cancer, Disease and Developmental epigenetics, Murdoch Children's Research InstituteRoyal Children's HospitalMelbourneVICAustralia
| | - Mark D. Kilby
- Centre for Women's and Newborn HealthInstitute of Metabolism and Systems ResearchUniversity of BirminghamBirminghamUK
| | - Philip N. Baker
- International Collaborative Laboratory of Reproduction and Development of Chinese Ministry of EducationChongqing Medical UniversityChongqingChina
- College of Life SciencesUniversity of LeicesterLeicesterUK
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17
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Dong Y, Xiong L, Phinney IY, Sun Z, Jing R, McLeod AS, Zhang S, Liu S, Ruta FL, Gao H, Dong Z, Pan R, Edgar JH, Jarillo-Herrero P, Levitov LS, Millis AJ, Fogler MM, Bandurin DA, Basov DN. Fizeau drag in graphene plasmonics. Nature 2021; 594:513-516. [PMID: 34163054 DOI: 10.1038/s41586-021-03640-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 05/12/2021] [Indexed: 11/09/2022]
Abstract
Dragging of light by moving media was predicted by Fresnel1 and verified by Fizeau's celebrated experiments2 with flowing water. This momentous discovery is among the experimental cornerstones of Einstein's special relativity theory and is well understood3,4 in the context of relativistic kinematics. By contrast, experiments on dragging photons by an electron flow in solids are riddled with inconsistencies and have so far eluded agreement with the theory5-7. Here we report on the electron flow dragging surface plasmon polaritons8,9 (SPPs): hybrid quasiparticles of infrared photons and electrons in graphene. The drag is visualized directly through infrared nano-imaging of propagating plasmonic waves in the presence of a high-density current. The polaritons in graphene shorten their wavelength when propagating against the drifting carriers. Unlike the Fizeau effect for light, the SPP drag by electrical currents defies explanation by simple kinematics and is linked to the nonlinear electrodynamics of Dirac electrons in graphene. The observed plasmonic Fizeau drag enables breaking of time-reversal symmetry and reciprocity10 at infrared frequencies without resorting to magnetic fields11,12 or chiral optical pumping13,14. The Fizeau drag also provides a tool with which to study interactions and nonequilibrium effects in electron liquids.
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Affiliation(s)
- Y Dong
- Department of Physics, Columbia University, New York, NY, USA.,Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY, USA
| | - L Xiong
- Department of Physics, Columbia University, New York, NY, USA
| | - I Y Phinney
- Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Z Sun
- Department of Physics, Columbia University, New York, NY, USA
| | - R Jing
- Department of Physics, Columbia University, New York, NY, USA
| | - A S McLeod
- Department of Physics, Columbia University, New York, NY, USA
| | - S Zhang
- Department of Physics, Columbia University, New York, NY, USA
| | - S Liu
- The Tim Taylor Department of Chemical Engineering, Kansas State University, Manhattan, KS, USA
| | - F L Ruta
- Department of Physics, Columbia University, New York, NY, USA.,Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY, USA
| | - H Gao
- Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Z Dong
- Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - R Pan
- Department of Physics, Columbia University, New York, NY, USA
| | - J H Edgar
- The Tim Taylor Department of Chemical Engineering, Kansas State University, Manhattan, KS, USA
| | - P Jarillo-Herrero
- Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - L S Levitov
- Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - A J Millis
- Department of Physics, Columbia University, New York, NY, USA
| | - M M Fogler
- Department of Physics, University of California San Diego, La Jolla, CA, USA
| | - D A Bandurin
- Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, USA.
| | - D N Basov
- Department of Physics, Columbia University, New York, NY, USA.
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18
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Jin MH, Xiong L, Zhou NJ, Zheng B, Zhou TJ. Universality classes of the domain-wall creep motion driven by spin-transfer torques. Phys Rev E 2021; 103:062119. [PMID: 34271735 DOI: 10.1103/physreve.103.062119] [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] [Received: 12/26/2020] [Accepted: 05/27/2021] [Indexed: 11/07/2022]
Abstract
With the stochastic Landau-Lifshitz-Gilbert equation, we numerically simulate the creep motion of a magnetic domain wall driven by the adiabatic and nonadiabatic spin-transfer torques induced by the electric current. The creep exponent μ and the roughness exponent ζ are accurately determined from the scaling behaviors. The creep motions driven by the adiabatic and nonadiabatic spin-transfer torques belong to different universality classes. The scaling relation between μ and ζ based on certain simplified assumptions is valid for the nonadiabatic spin-transfer torque, while invalid for the adiabatic one. Our results are compatible with the experimental ones, but go beyond the existing theoretical prediction. Our investigation reveals that the disorder-induced pinning effect on the domain-wall rotation alters the universality class of the creep motion.
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Affiliation(s)
- M H Jin
- College of Electronics and Information, Hangzhou Dianzi University, Hangzhou 310018, People's Republic of China
| | - L Xiong
- School of Physics and Astronomy, Yunnan University, Kunming 650091, People's Republic of China.,Department of Physics, Zhejiang University, Hangzhou 310027, People's Republic of China
| | - N J Zhou
- Department of Physics, Hangzhou Normal University, Hangzhou 310036, People's Republic of China
| | - B Zheng
- School of Physics and Astronomy, Yunnan University, Kunming 650091, People's Republic of China.,Department of Physics, Zhejiang University, Hangzhou 310027, People's Republic of China.,Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, People's Republic of China
| | - T J Zhou
- College of Electronics and Information, Hangzhou Dianzi University, Hangzhou 310018, People's Republic of China
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19
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Raposo N, Zanon Zotin MC, Schoemaker D, Xiong L, Fotiadis P, Charidimou A, Pasi M, Boulouis G, Schwab K, Schirmer MD, Etherton MR, Gurol ME, Greenberg SM, Duering M, Viswanathan A. Peak Width of Skeletonized Mean Diffusivity as Neuroimaging Biomarker in Cerebral Amyloid Angiopathy. AJNR Am J Neuroradiol 2021; 42:875-881. [PMID: 33664113 DOI: 10.3174/ajnr.a7042] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 11/20/2020] [Indexed: 12/19/2022]
Abstract
BACKGROUND AND PURPOSE Whole-brain network connectivity has been shown to be a useful biomarker of cerebral amyloid angiopathy and related cognitive impairment. We evaluated an automated DTI-based method, peak width of skeletonized mean diffusivity, in cerebral amyloid angiopathy, together with its association with conventional MRI markers and cognitive functions. MATERIALS AND METHODS We included 24 subjects (mean age, 74.7 [SD, 6.0] years) with probable cerebral amyloid angiopathy and mild cognitive impairment and 62 patients with MCI not attributable to cerebral amyloid angiopathy (non-cerebral amyloid angiopathy-mild cognitive impairment). We compared peak width of skeletonized mean diffusivity between subjects with cerebral amyloid angiopathy-mild cognitive impairment and non-cerebral amyloid angiopathy-mild cognitive impairment and explored its associations with cognitive functions and conventional markers of cerebral small-vessel disease, using linear regression models. RESULTS Subjects with Cerebral amyloid angiopathy-mild cognitive impairment showed increased peak width of skeletonized mean diffusivity in comparison to those with non-cerebral amyloid angiopathy-mild cognitive impairment (P < .001). Peak width of skeletonized mean diffusivity values were correlated with the volume of white matter hyperintensities in both groups. Higher peak width of skeletonized mean diffusivity was associated with worse performance in processing speed among patients with cerebral amyloid angiopathy, after adjusting for other MRI markers of cerebral small vessel disease. The peak width of skeletonized mean diffusivity did not correlate with cognitive functions among those with non-cerebral amyloid angiopathy-mild cognitive impairment. CONCLUSIONS Peak width of skeletonized mean diffusivity is altered in cerebral amyloid angiopathy and is associated with performance in processing speed. This DTI-based method may reflect the degree of white matter structural disruption in cerebral amyloid angiopathy and could be a useful biomarker for cognition in this population.
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Affiliation(s)
- N Raposo
- From the Stroke Research Center (N.R., M.C.Z.Z., D.S., L.X., P.F., A.C., K.S., M.D.S., M.R.E., M.E.G., S.M.G., A.V.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts .,Department of Neurology (N.R.), Centre Hospitalier Universitaire de Toulouse, Toulouse, France.,Toulouse NeuroImaging Center (N.R.), Université de Toulouse, Institut National de la Santé et de la Recherche Médicale, Toulouse, UPS, France
| | - M C Zanon Zotin
- From the Stroke Research Center (N.R., M.C.Z.Z., D.S., L.X., P.F., A.C., K.S., M.D.S., M.R.E., M.E.G., S.M.G., A.V.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts.,Center for Imaging Sciences and Medical Physics (M.C.Z.Z.). Department of Medical Imaging, Hematology and Clinical Oncology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil;, Hospital das Clínicas da Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, São Paulo, Brazil
| | - D Schoemaker
- From the Stroke Research Center (N.R., M.C.Z.Z., D.S., L.X., P.F., A.C., K.S., M.D.S., M.R.E., M.E.G., S.M.G., A.V.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - L Xiong
- From the Stroke Research Center (N.R., M.C.Z.Z., D.S., L.X., P.F., A.C., K.S., M.D.S., M.R.E., M.E.G., S.M.G., A.V.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - P Fotiadis
- From the Stroke Research Center (N.R., M.C.Z.Z., D.S., L.X., P.F., A.C., K.S., M.D.S., M.R.E., M.E.G., S.M.G., A.V.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - A Charidimou
- From the Stroke Research Center (N.R., M.C.Z.Z., D.S., L.X., P.F., A.C., K.S., M.D.S., M.R.E., M.E.G., S.M.G., A.V.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - M Pasi
- Department of Neurology (M.P.), Centre Hospitalier Universitaire de Lille, Lille, France
| | - G Boulouis
- Department of Neuroradiology (G.B.), Centre Hospitalier Sainte-Anne, Université Paris-Descartes, Paris, France
| | - K Schwab
- From the Stroke Research Center (N.R., M.C.Z.Z., D.S., L.X., P.F., A.C., K.S., M.D.S., M.R.E., M.E.G., S.M.G., A.V.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - M D Schirmer
- From the Stroke Research Center (N.R., M.C.Z.Z., D.S., L.X., P.F., A.C., K.S., M.D.S., M.R.E., M.E.G., S.M.G., A.V.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts.,Computer Science and Artificial Intelligence Lab (M.D.S.), Massachusetts Institute of Technology, Boston, Massachusetts.,Department of Population Health Sciences (M.D.S.), German Center for Neurodegenerative Diseases, Bonn, Germany
| | - M R Etherton
- From the Stroke Research Center (N.R., M.C.Z.Z., D.S., L.X., P.F., A.C., K.S., M.D.S., M.R.E., M.E.G., S.M.G., A.V.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - M E Gurol
- From the Stroke Research Center (N.R., M.C.Z.Z., D.S., L.X., P.F., A.C., K.S., M.D.S., M.R.E., M.E.G., S.M.G., A.V.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - S M Greenberg
- From the Stroke Research Center (N.R., M.C.Z.Z., D.S., L.X., P.F., A.C., K.S., M.D.S., M.R.E., M.E.G., S.M.G., A.V.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - M Duering
- Medical Image Analysis Center and Quantitative Biomedical Imaging Group (M.D.), Department of Biomedical Engineering, University of Basel, Basel, Switzerland
| | - A Viswanathan
- From the Stroke Research Center (N.R., M.C.Z.Z., D.S., L.X., P.F., A.C., K.S., M.D.S., M.R.E., M.E.G., S.M.G., A.V.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
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20
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Li N, Liu C, Xiong L, Huang D, Shen X, Zhang H, She X, Jiang Y. P76.100 Primary Drug Resistance to EGFR-TKIs by EGFR p.V1010M Germline Mutation Combined with EGFR p.L858R Somatic Mutation and its Pedigree Analysis. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.1658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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21
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Zhu X, Chen M, Wang H, Guo Y, Chau MHK, Yan H, Cao Y, Kwok YKY, Chen J, Hui ASY, Zhang R, Meng Z, Zhu Y, Leung TY, Xiong L, Kong X, Choy KW. Clinical utility of expanded non-invasive prenatal screening and chromosomal microarray analysis in high-risk pregnancy. Ultrasound Obstet Gynecol 2021; 57:459-465. [PMID: 32198896 DOI: 10.1002/uog.22021] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 02/27/2020] [Accepted: 03/13/2020] [Indexed: 06/10/2023]
Abstract
OBJECTIVE To evaluate the utility of expanded non-invasive prenatal screening (NIPS), compared with chromosomal microarray analysis (CMA), for the detection of chromosomal abnormalities in high-risk pregnancies. METHODS This was a multicenter retrospective study of singleton pregnancies at high risk for chromosomal abnormality. Patients who underwent expanded NIPS and CMA sequentially during pregnancy from 2015 to 2019 were included in the analysis. Pregnancies with a positive result for sex chromosome aneuploidy were excluded as the full details could not be retrieved. The utility of expanded NIPS and CMA for detection of chromosomal abnormalities in this cohort was compared by assessing the concordance between the results. RESULTS Of the 774 included high-risk pregnancies, 550 (71.1%) had a positive NIPS result, while a positive CMA result was detected in 308 (39.8%) cases. The rate of full or partial concordance between NIPS and CMA was 82.2%, 59.6% and 25.0% for trisomies 21, 18 and 13, respectively. For rare aneuploidies and segmental imbalances, NIPS and CMA results were fully or partially concordant in 7.5% and 33.3% of cases, respectively. Copy-number variants < 5 Mb were detected more often by CMA, with an incidence of 7.9% (61/774) compared with 3.1% (24/774) by NIPS. A genetic aberration was detected by CMA in 1 in 17 (5.8%) high-risk pregnancies that had a negative or non-reportable NIPS result. CONCLUSION CMA allows for comprehensive detection of genome-wide chromosomal abnormalities in high-risk pregnancies. CMA should be offered instead of expanded NIPS for high-risk pregnancies. Copyright © 2020 ISUOG. Published by John Wiley & Sons Ltd.
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Affiliation(s)
- X Zhu
- Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Hong Kong, SAR, China
- Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
- Genetics and Prenatal Diagnosis Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - M Chen
- Department of Fetal Medicine and Prenatal Diagnosis, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - H Wang
- Department of Central Laboratory, Shenzhen Baoan Women's and Children's Hospital, Jinan University, Guangdong, China
| | - Y Guo
- Genetics and Prenatal Diagnosis Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - M H K Chau
- Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Hong Kong, SAR, China
- Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
| | - H Yan
- Department of Fetal Medicine and Prenatal Diagnosis, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Y Cao
- Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Hong Kong, SAR, China
- The Chinese University of Hong Kong, Baylor College of Medicine Joint Center for Medical Genetics, The Chinese University of Hong Kong, Hong Kong, SAR, China
| | - Y K Y Kwok
- Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Hong Kong, SAR, China
| | - J Chen
- Department of Fetal Medicine and Prenatal Diagnosis, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - A S Y Hui
- Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Hong Kong, SAR, China
| | - R Zhang
- Department of Central Laboratory, Shenzhen Baoan Women's and Children's Hospital, Jinan University, Guangdong, China
| | - Z Meng
- Department of Central Laboratory, Shenzhen Baoan Women's and Children's Hospital, Jinan University, Guangdong, China
| | - Y Zhu
- Department of Central Laboratory, Shenzhen Baoan Women's and Children's Hospital, Jinan University, Guangdong, China
| | - T Y Leung
- Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Hong Kong, SAR, China
- Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
- The Chinese University of Hong Kong, Baylor College of Medicine Joint Center for Medical Genetics, The Chinese University of Hong Kong, Hong Kong, SAR, China
| | - L Xiong
- Department of Central Laboratory, Shenzhen Baoan Women's and Children's Hospital, Jinan University, Guangdong, China
| | - X Kong
- Genetics and Prenatal Diagnosis Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - K W Choy
- Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Hong Kong, SAR, China
- Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
- The Chinese University of Hong Kong, Baylor College of Medicine Joint Center for Medical Genetics, The Chinese University of Hong Kong, Hong Kong, SAR, China
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Han B, Zhang B, Shi C, Gao Z, Zhong H, Xiong L, Gu A, Wang W, Chu T, Zhang W, Wang H, Zhang X, Zhong R. P76.59 Rationale and Design of a Phase II Trial of Dacomitinib in Advanced NSCLC Patients with Uncommon EGFR Mutations. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.1116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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23
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Wong KS, Chen XY, Leung TWH, Siu YW, Xiong L, Leng X. Intracranial artery calcification to screen patients at high risk of recurrent stroke: abridged secondary publication. Hong Kong Med J 2020; 26 Suppl 7:42-44. [PMID: 33229619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023] Open
Affiliation(s)
- K S Wong
- Department of Medicine and Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong
| | - X Y Chen
- Department of Medicine and Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong
| | - T W H Leung
- Department of Medicine and Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong
| | - Y W Siu
- Department of Diagnostic and Interventional Radiology, Kwong Wah Hospital
| | - L Xiong
- Department of Medicine and Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong
| | - X Leng
- Department of Medicine and Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong
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24
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Zhou JG, Hua Y, Liu SW, Hu WQ, Qian R, Xiong L. MicroRNA-1286 inhibits osteogenic differentiation of mesenchymal stem cells to promote the progression of osteoporosis via regulating FZD4 expression. Eur Rev Med Pharmacol Sci 2020; 24:1-10. [PMID: 31957812 DOI: 10.26355/eurrev_202001_19889] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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 whether microRNA-1286 could inhibit the osteogenic differentiation of human marrow mesenchymal stem cells (hMSCs) by regulating FZD4 expression and promoting the progression of osteoporosis. PATIENTS AND METHODS Quantitative Real Time-Polymerase Chain Reaction (qRT-PCR) was used to detect the expression of microRNA-1286 in the serum of patients with osteoporosis. Meanwhile, microRNA-1286 expression in different stages of osteogenic differentiation of hMSCs was measured by qRT-PCR as well. After overexpression of microRNA-1286 and FZD4 in hMSCs, the mRNA expression levels of microRNA-1286, alkaline phosphatase (ALP), RUNX2 and osteocalcin (OCN) were detected by qRT-PCR. The protein expression levels of RUNX2 and OCN were detected by Western blot. Meanwhile, alkaline phosphatase (ALP) activity and expression in cells were examined using ALP assay kit and ALP staining method, respectively. Cell mineralized nodules were detected through the alizarin red staining test. Bioinformatics method was used to predict the binding site of microRNA-1286 to FZD4. Subsequent luciferase reporter gene assay was performed to verify whether microRNA-1286 could combine with FZD4. After overexpression or knockdown of microRNA-1286, the mRNA and protein expressions of FZD4 were analyzed using qRT-PCR and Western blot assay, respectively. After the simultaneous overexpression of microRNA-1286 and FZD4 in hMSCs, the mRNA expression levels of ALP, RUNX2 and OCN, ALP activity and content, and cell mineralization ability were successively examined. RESULTS The expression of microRNA-1286 in the serum of patients with osteoporosis was significantly higher than that of the normal population. Meanwhile, microRNA-1286 expression decreased with the increase of osteogenic differentiation days of hAMSCs. After the overexpression of microRNA-1286, ALP, RUNX2, and OCN levels, ALP activity, RUNX2, and OCN protein levels, as well as mineralized nodule formation were significantly reduced. However, results were reversed when FZD4 was simultaneously up-regulated. Luciferase reporter gene assay results verified that microRNA-1286 could bind to FZD4. After the overexpression of microRNA-1286, the mRNA and protein expressions of FZD4 were found significantly down-regulated. However, results were reversed after knocking down microRNA-1286. Furthermore, the simultaneous overexpression of microRNA-1286 and FZD4 could counteract the inhibitory effect of over-expression of microRNA-1286 on osteogenic differentiation of hMSCs. CONCLUSIONS MicroRNA-1286 can regulate FZD4 expression and inhibit osteogenic differentiation of hMSCs, thereby promoting the development of osteoporosis.
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Affiliation(s)
- J-G Zhou
- Department of Joint Surgery, The Affiliated Ganzhou Hospital of Nanchang University, Ganzhou, China.
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25
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Abstract
An outbreak of new severe acute respiratory syndrome coronavirus disease, coronavirus disease 2019 (COVID-19), has emerged during December 2019. The ongoing outbreak in Wuhan City spread rapidly throughout China, where the fatality rate ranged from 2.1 to 4.9%. Due to its high transmissibility, the World Health Organization (WHO) declared a public health emergency of international concern on 30 January 2020. The current outbreak has the potential to become the first pandemic of the new millennium. Most patients who were first diagnosed with COVID-19 worked at or lived in the vicinity of the local Huanan Seafood Wholesale Market, where live animals were also on sale. The concerted efforts of Chinese scientists led to the independent isolation from patients and identification of a novel coronavirus, SARS coronavirus 2 (SARS-CoV-2), on 6 January 2020; this has been an important step in the development of treatment. The purpose of this article is to overview the history, epidemiology, clinical characteristics, diagnosis, and treatment of COVID 2019 reported in recently published studies. Based on the results of virus genome sequencing and a model of the interaction between host cells and the virus, we propose several possible targets for antiviral drugs, which may provide new ideas for epidemic control and vaccine development. Keywords: 2019 novel coronavirus; pneumonia; SARS-CoV-2; Coronaviridae; COVID-19.
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26
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Liu H, Wang L, Chan K, Xiong L, Leng L, Shi L, Leung TW, Chen F, Zheng D. The Application of Non-linear Flow Resistance in Cerebral Artery: Compared with Windkessel Model based on Genetic Algorithm. Annu Int Conf IEEE Eng Med Biol Soc 2020; 2019:2285-2288. [PMID: 31946356 DOI: 10.1109/embc.2019.8857963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Continuous blood pressure is measured from various extracranial body sites, with difference in amplitude and phase with intracranial blood pressure. Consequent influences on the accuracy of Windkessel model need further investigation. Between blood pressure and intracranial flow rate, a model with non-linear flow resistance (R-DT) was proposed and compared with the 3-element Windkessel (RCR) model. From the measured blood flow velocity in middle cerebral artery, the blood pressure was estimated by R-DT and RCR models respectively. The parameters in the models were optimized by genetic algorithm. The accuracies of R-DT and RCR models were compared based on their estimation errors to the measured blood pressure. The capacitance element in RCR model indicated limited ability to take the time shift into account. Compared with RCR model, R-DT model had less error (averaged relative error: 5.19% and 2.49% for RCR and RDT models). The non-linear flow resistance was applicable in simulating cerebral arteries.
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Xiong L, Yu KH, Zhen SQ. MiR-93 blocks STAT3 to alleviate hepatic injury after ischemia-reperfusion. Eur Rev Med Pharmacol Sci 2019; 22:5295-5304. [PMID: 30178854 DOI: 10.26355/eurrev_201808_15729] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Signal transducer and activator of transcription 3 (STAT3) is correlated with ischemia-reperfusion (I-R) injury. The previous studies showed a decreased miR-93 expression after I-R injury of heart or brain organs, but without knowledge in liver tissues. This study aims to investigate effects of MiR-93 on the hepatic injury after ischemia/reperfusion. MATERIALS AND METHODS Rat liver I-R model was generated. Liver function indexes including alanine transaminase (ALT) and aspartate aminotransferase (AST) were quantified, and serum tumor necrosis factor α (TNF-α), interleukin-1β (IL-1β), and interleukin-6 (IL-6) levels were quantified. Hepatic tissue apoptosis was measured by transferase-mediated deoxyuridine triphosphate-biotin nick end labeling (TUNEL), and expression of microRNA-93 (miR-93), STAT3, and phosphorylated STAT3 (p-STAT3) were measured. Dual luciferase reporter gene assay confirmed targeted relationship between miR-93 and STAT3. Agomir or miR-93 agomir was injected into the peritoneal cavity of I-R model, followed by ALT and AST assays. Serum levels of TNF-α, IL-1β, and IL-6 were measured, followed by TUNEL assay for comparing STAT3 and p-STAT3 expression. RESULTS Comparing to sham group, I-R group rat showed significantly elevated serum ALT, AST, TNF-α, IL-1β, and IL-6 contents, along with significantly elevated hepatic cell apoptosis, plus decreased miR-93 expression, whilst STAT3 and p-STAT3 expression was enhanced. Intraperitoneal injection of miR-93 agomir significantly decreased STAT3 or p-STAT3 expression, and decreased cell apoptotic rate. Serum levels of ALT, AST, TNF-α, IL-1β, and IL-6 were significantly decreased, accompanied by improved liver function. CONCLUSIONS Hepatic I-R injury is accompanied by miR-93 down-regulation, plus STAT3 up-regulation. Overexpression of miR-93 significantly depressed STAT3 expression in liver I-R injury, alleviated hepatic injury or apoptosis, decreased inflammatory response, and improved liver function.
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Affiliation(s)
- L Xiong
- Department of Infectious Disease, Clinical Medical College, Hubei University of Science and Technology, Xianning, Hubei, China.
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28
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Xiong L, Forsythe C, Jung M, McLeod AS, Sunku SS, Shao YM, Ni GX, Sternbach AJ, Liu S, Edgar JH, Mele EJ, Fogler MM, Shvets G, Dean CR, Basov DN. Photonic crystal for graphene plasmons. Nat Commun 2019; 10:4780. [PMID: 31636265 PMCID: PMC6803641 DOI: 10.1038/s41467-019-12778-2] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Accepted: 09/26/2019] [Indexed: 11/22/2022] Open
Abstract
Photonic crystals are commonly implemented in media with periodically varying optical properties. Photonic crystals enable exquisite control of light propagation in integrated optical circuits, and also emulate advanced physical concepts. However, common photonic crystals are unfit for in-operando on/off controls. We overcome this limitation and demonstrate a broadly tunable two-dimensional photonic crystal for surface plasmon polaritons. Our platform consists of a continuous graphene monolayer integrated in a back-gated platform with nano-structured gate insulators. Infrared nano-imaging reveals the formation of a photonic bandgap and strong modulation of the local plasmonic density of states that can be turned on/off or gradually tuned by the applied gate voltage. We also implement an artificial domain wall which supports highly confined one-dimensional plasmonic modes. Our electrostatically-tunable photonic crystals are derived from standard metal oxide semiconductor field effect transistor technology and pave a way for practical on-chip light manipulation. Traditional photonic crystals consist of periodic media with a pre-defined optical response. Here, the authors combine nanostructured back-gate insulators with a continuous layer of graphene to demonstrate an electrically tunable two-dimensional photonic crystal suitable for controlling the propagation of surface plasmon polaritons.
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Affiliation(s)
- L Xiong
- Department of Physics, Columbia University, New York, NY, 10027, USA
| | - C Forsythe
- Department of Physics, Columbia University, New York, NY, 10027, USA
| | - M Jung
- Department of Physics, Cornell University, Ithaca, NY, 14853, USA
| | - A S McLeod
- Department of Physics, Columbia University, New York, NY, 10027, USA
| | - S S Sunku
- Department of Physics, Columbia University, New York, NY, 10027, USA.,Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY, 10027, USA
| | - Y M Shao
- Department of Physics, Columbia University, New York, NY, 10027, USA
| | - G X Ni
- Department of Physics, Columbia University, New York, NY, 10027, USA
| | - A J Sternbach
- Department of Physics, Columbia University, New York, NY, 10027, USA
| | - S Liu
- The Tim Taylor Department of Chemical Engineering, Kansas State University, Manhattan, KS, 66506, USA
| | - J H Edgar
- The Tim Taylor Department of Chemical Engineering, Kansas State University, Manhattan, KS, 66506, USA
| | - E J Mele
- Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - M M Fogler
- Department of physics, University of California San Diego, La Jolla, CA, 92093, USA
| | - G Shvets
- School of Applied and Engineering Physics, Cornell University, Ithaca, NY, 14853, USA
| | - C R Dean
- Department of Physics, Columbia University, New York, NY, 10027, USA
| | - D N Basov
- Department of Physics, Columbia University, New York, NY, 10027, USA.
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Xiong L, Bai Y, Zhao J, Lanuti M, Tang H. P2.01-101 Multiple Chemotherapy-Based Combination Therapy Strategies for Advanced Lung Cancer Patients: A Systematic Review and Network Meta-Analysis. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Tang H, Bai Y, Xiong L, Zhao J, Lanuti M. P1.03-32 Knockdown of CENPF Gene Inhibits the Progression of Lung Adenocarcinoma Mediated by ERβ2/5 Pathway. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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31
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Chen D, Chu T, Chang Q, Zhang Y, Xiong L, Qiao R, Teng J, Han B, Zhong R. EP1.01-65 The Relationship Between Preliminary Efficacy and Prognosis After First-Line EGFR-TKI Treatment of Advanced NSCLC. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.2038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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32
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Lu J, Zhong H, Wu J, Chu T, Zhang L, Li H, Wang Q, Li R, Zhao Y, Gu A, Shi C, Xiong L, Zhang X, Zhang W, Lou Y, Yan B, Dong Y, Zhang Y, Li B, Zhang L, Zhao X, Li K, Han B. MA25.09 Navigating Anlotinib Precision Therapy Through the Genetic Profiling of Circulating DNA in Non-Small Cell Lung Cancer Patients. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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33
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Dong H, Peng H, Wang C, Guo Y, Li B, Chen C, Xiong L, Li F, Tian L, Xu Q. Development and validation of an RNA-Seq Assay for gene fusions detection in formalin-fixed paraffin-embedded samples. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz257.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Xiong L, Tian G, Leung HW, Chen XY, Lin WH, Leung TWH, Soo YO, Siu DYW, Wong LKS. Autonomic dysfunction as measured by Ewing battery test to predict poor outcome after acute ischaemic stroke. Hong Kong Med J 2019; 25 Suppl 5:9-11. [PMID: 31416978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023] Open
Affiliation(s)
- L Xiong
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong
| | - G Tian
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong
| | - H W Leung
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong
| | - X Y Chen
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong
| | - W H Lin
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong
| | - T W H Leung
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong
| | - Y O Soo
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong
| | - D Y W Siu
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong
| | - L K S Wong
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong
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He C, Shan N, Xu P, Ge H, Yuan Y, Liu Y, Zhang P, Wen L, Zhang F, Xiong L, Peng C, Qi H, Tong C, Baker PN. Hypoxia-induced Downregulation of SRC-3 Suppresses Trophoblastic Invasion and Migration Through Inhibition of the AKT/mTOR Pathway: Implications for the Pathogenesis of Preeclampsia. Sci Rep 2019; 9:10349. [PMID: 31316078 PMCID: PMC6637123 DOI: 10.1038/s41598-019-46699-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 06/29/2019] [Indexed: 01/14/2023] Open
Abstract
Preeclampsia (PE) is characterized by poor placentation, consequent on aberrant extravillous trophoblast (EVT) cell function during placental development. The SRC family of proteins is important during pregnancy, especially SRC-3, which regulates placental morphogenesis and embryo survival. Although SRC-3 expression in mouse trophoblast giant cells has been documented, its role in the functional regulation of extravillous trophoblasts and the development of PE remains unknown. This study found that SRC-3 expression was significantly lower in placentas from PE pregnancies as compared to uncomplicated pregnancies. Additionally, both CoCl2-mimicked hypoxia and suppression of endogenous SRC-3 expression by lentivirus short hairpin RNA attenuated the migration and invasion abilities of HTR-8/SVneo cells. Moreover, we demonstrated that SRC-3 physically interacts with AKT to regulate the migration and invasion of HTR-8 cells, via the AKT/mTOR pathway. We also found that the inhibition of HTR-8 cell migration and invasion by CoCl2-mimicked hypoxia was through the SRC-3/AKT/mTOR axis. Our findings indicate that, in early gestation, accumulation of HIF-1α inhibits the expression of SRC-3, which impairs extravillous trophoblastic invasion and migration by directly interacting with AKT. This potentially leads to insufficient uterine spiral artery remodeling and placental hypoperfusion, and thus the development of PE.
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Affiliation(s)
- Chengjin He
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.,International Collaborative Joint Laboratory of Reproduction and Development, Ministry of Education of China, Chongqing Medical University, Chongqing, 400016, China.,State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Nan Shan
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.,International Collaborative Joint Laboratory of Reproduction and Development, Ministry of Education of China, Chongqing Medical University, Chongqing, 400016, China.,State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Ping Xu
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.,International Collaborative Joint Laboratory of Reproduction and Development, Ministry of Education of China, Chongqing Medical University, Chongqing, 400016, China.,State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Huisheng Ge
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.,International Collaborative Joint Laboratory of Reproduction and Development, Ministry of Education of China, Chongqing Medical University, Chongqing, 400016, China.,State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Yu Yuan
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.,International Collaborative Joint Laboratory of Reproduction and Development, Ministry of Education of China, Chongqing Medical University, Chongqing, 400016, China.,State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Yangming Liu
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.,International Collaborative Joint Laboratory of Reproduction and Development, Ministry of Education of China, Chongqing Medical University, Chongqing, 400016, China.,State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Pu Zhang
- College of Pharmacy, Chongqing Medical University, Chongqing, 400016, China
| | - Li Wen
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.,International Collaborative Joint Laboratory of Reproduction and Development, Ministry of Education of China, Chongqing Medical University, Chongqing, 400016, China.,State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Fumei Zhang
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.,International Collaborative Joint Laboratory of Reproduction and Development, Ministry of Education of China, Chongqing Medical University, Chongqing, 400016, China.,State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Liling Xiong
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.,International Collaborative Joint Laboratory of Reproduction and Development, Ministry of Education of China, Chongqing Medical University, Chongqing, 400016, China.,State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Chuan Peng
- State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Hongbo Qi
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China. .,International Collaborative Joint Laboratory of Reproduction and Development, Ministry of Education of China, Chongqing Medical University, Chongqing, 400016, China. .,State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.
| | - Chao Tong
- Department of Obstetrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China. .,International Collaborative Joint Laboratory of Reproduction and Development, Ministry of Education of China, Chongqing Medical University, Chongqing, 400016, China. .,State Key Laboratory of Maternal and Fetal Medicine of Chongqing Municipality, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.
| | - Philip N Baker
- International Collaborative Joint Laboratory of Reproduction and Development, Ministry of Education of China, Chongqing Medical University, Chongqing, 400016, China.,Liggins Institute, University of Auckland, Auckland, 1142, New Zealand.,College of Life Sciences, University of Leicester, Leicester, LE1 7RH, UK
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Fan Y, Zou J, Cao X, Wu Y, Gao F, Xiong L. Data on antibiotic use for detecting clusters of healthcare-associated infection caused by multidrug-resistant organisms in a hospital in China, 2014 to 2017. J Hosp Infect 2019; 101:305-312. [DOI: 10.1016/j.jhin.2018.06.011] [Citation(s) in RCA: 5] [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: 04/04/2018] [Accepted: 06/12/2018] [Indexed: 01/09/2023]
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Sunku SS, Ni GX, Jiang BY, Yoo H, Sternbach A, McLeod AS, Stauber T, Xiong L, Taniguchi T, Watanabe K, Kim P, Fogler MM, Basov DN. Photonic crystals for nano-light in moiré graphene superlattices. Science 2019; 362:1153-1156. [PMID: 30523109 DOI: 10.1126/science.aau5144] [Citation(s) in RCA: 130] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2018] [Accepted: 10/29/2018] [Indexed: 01/16/2023]
Abstract
Graphene is an atomically thin plasmonic medium that supports highly confined plasmon polaritons, or nano-light, with very low loss. Electronic properties of graphene can be drastically altered when it is laid upon another graphene layer, resulting in a moiré superlattice. The relative twist angle between the two layers is a key tuning parameter of the interlayer coupling in thus-obtained twisted bilayer graphene (TBG). We studied the propagation of plasmon polaritons in TBG by infrared nano-imaging. We discovered that the atomic reconstruction occurring at small twist angles transforms the TBG into a natural plasmon photonic crystal for propagating nano-light. This discovery points to a pathway for controlling nano-light by exploiting quantum properties of graphene and other atomically layered van der Waals materials, eliminating the need for arduous top-down nanofabrication.
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Affiliation(s)
- S S Sunku
- Department of Physics, Columbia University, New York, NY 10027, USA.,Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY 10027, USA
| | - G X Ni
- Department of Physics, Columbia University, New York, NY 10027, USA
| | - B Y Jiang
- Department of Physics, University of California-San Diego, La Jolla, CA 92093, USA
| | - H Yoo
- Department of Physics, Harvard University, Cambridge, MA 02138, USA
| | - A Sternbach
- Department of Physics, Columbia University, New York, NY 10027, USA
| | - A S McLeod
- Department of Physics, Columbia University, New York, NY 10027, USA
| | - T Stauber
- Departamento de Teoría y Simulación de Materiales, Instituto de Ciencia de Materiales de Madrid, CSIC, E-28049 Madrid, Spain
| | - L Xiong
- Department of Physics, Columbia University, New York, NY 10027, USA
| | - T Taniguchi
- National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
| | - K Watanabe
- National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
| | - P Kim
- Department of Physics, Harvard University, Cambridge, MA 02138, USA
| | - M M Fogler
- Department of Physics, University of California-San Diego, La Jolla, CA 92093, USA
| | - D N Basov
- Department of Physics, Columbia University, New York, NY 10027, USA.
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Ma K, Chen S, Li Z, Deng X, Huang D, Xiong L, Shao Z. Mechanisms of endogenous repair failure during intervertebral disc degeneration. Osteoarthritis Cartilage 2019; 27:41-48. [PMID: 30243946 DOI: 10.1016/j.joca.2018.08.021] [Citation(s) in RCA: 85] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 08/27/2018] [Accepted: 08/30/2018] [Indexed: 02/02/2023]
Abstract
Intervertebral disc (IVD) degeneration is frequently associated with Low back pain (LBP), which can severely reduce the quality of human life and cause enormous economic loss. However, there is a lack of long-lasting and effective therapies for IVD degeneration at present. Recently, stem cell based tissue engineering techniques have provided novel and promising treatment for the repair of degenerative IVDs. Numerous studies showed that stem/progenitor cells exist naturally in IVDs and could migrate from their niche to the IVD to maintain the quantity of nucleus pulposus (NP) cells. Unfortunately, these endogenous repair processes cannot prevent IVD degeneration as effectively as expected. Therefore, theoretical basis for regeneration of the NP in situ can be obtained from studying the mechanisms of endogenous repair failure during IVD degeneration. Although there have been few researches to study the mechanism of cell death and migration of stem/progenitor cells in IVD so far, studies demonstrated that the major inducing factors (compression and hypoxia) of IVD degeneration could decrease the number of NP cells by regulating apoptosis, autophagy, and necroptosis, and the particular chemokines and their receptors played a vital role in the migration of mesenchymal stem cells (MSCs). These studies provide a clue for revealing the mechanisms of endogenous repair failure during IVD degeneration. This article reviewed the current research situation and progress of the mechanisms through which IVD stem/progenitor cells failed to repair IVD tissues during IVD degeneration. Such studies provide an innovative research direction for endogenous repair and a new potential treatment strategy for IVD degeneration.
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Affiliation(s)
- K Ma
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - S Chen
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Z Li
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - X Deng
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - D Huang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - L Xiong
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
| | - Z Shao
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
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39
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Chen Y, Xiong L, Zeng J, Wei YG, Tan Y. [Gastroesophageal reflux disease is associated with high risk of obstructive sleep apnea syndrome]. Zhonghua Nei Ke Za Zhi 2018; 57:824-829. [PMID: 30392238 DOI: 10.3760/cma.j.issn.0578-1426.2018.11.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the relationship between gastroesophageal reflux disease (GERD) and obstructive sleep apnea syndrome(OSAS). Methods: Patients diagnosed as GERD and healthy controls without GERD related symptoms or endoscopic esophagitis were enrolled from October 2017 and December 2017. All subjects completed Berlin Questionaire to assess the risk of OSAS. Univariate and multivariate logistic regression models were applied to identify risk factors of OSAS. Results: A total of 177 subjects (97 GERD, 80 controls) were finally selected. Significantly more patients in GERD group had high risk OSAS than those in controls [36.1%(35/97) vs. 17.5%(14/80), P=0.005]. In GERD group, patients with erosive reflux diseases (ERD) had especially higher proportion of high risk OSAS compared with the non-ERD group and the healthy controls [53.3% (24/45) vs. 20.8% (10/48) and 17.5% (14/80), P=0.001]. On univariate analysis, male, aging and reflux esophagitis were identified as risk factors of OSAS (all P<0.01). On multivariate analysis, male (OR=12.156, 95%CI 1.382-106.905, P=0.024), aging (OR=1.132, 95%CI 1.051-1.220, P=0.001), acid regurgitation with reflux esophagitis (OR=5.157, 95%CI 1.327-20.034, P=0.018) were significant risk factors. Conclusions: More GERD patients are combined with high risk OSAS than controls, especially subjects with reflux esophagitis. Male and aging GERD patients with acid regurgitation and reflux esophagitis need further evaluation on OSAS screening.
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Affiliation(s)
| | - L Xiong
- Department of Gastroenterology, The Central Hospital of Longhua District, Shenzhen 518110, China
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Wu H, Li G, Tang Q, Tian L, Liu Q, Zhou X, He H, Xiong L. The mutation and one-base insertion of the α(1,4)galactosyltransferase gene responsible for the p phenotype. Transfus Clin Biol 2018; 26:358-360. [PMID: 30361135 DOI: 10.1016/j.tracli.2018.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Accepted: 08/02/2018] [Indexed: 11/20/2022]
Affiliation(s)
- H Wu
- Institute of Blood Transfusion, Jiangxi Province Blood Center, Nanchang, Jiangxi 330077, People's Republic of China.
| | - G Li
- Institute of Blood Transfusion, Jiangxi Province Blood Center, Nanchang, Jiangxi 330077, People's Republic of China
| | - Q Tang
- Institute of Blood Transfusion, Jiangxi Province Blood Center, Nanchang, Jiangxi 330077, People's Republic of China
| | - L Tian
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Chengdu 610052, People's Republic of China
| | - Q Liu
- Institute of Blood Transfusion, Jiangxi Province Blood Center, Nanchang, Jiangxi 330077, People's Republic of China
| | - X Zhou
- Institute of Blood Transfusion, Jiangxi Province Blood Center, Nanchang, Jiangxi 330077, People's Republic of China
| | - H He
- Institute of Blood Transfusion, Jiangxi Province Blood Center, Nanchang, Jiangxi 330077, People's Republic of China
| | - L Xiong
- Institute of Blood Transfusion, Jiangxi Province Blood Center, Nanchang, Jiangxi 330077, People's Republic of China
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Feng F, Cheng Q, Zhang D, Li B, Qin H, Xu C, Han M, Yu Y, Li Z, Li JY, Qiu Z, Xiong L, Liu C, Li F, Yi B, Jiang X. Targeted therapy based on the genetic alterations prolongs the progression-free survival of patients with advanced biliary tract cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy282.137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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42
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Dai R, Hua W, Chen W, Xiong L, Li L. The effect of milk consumption on acne: a meta-analysis of observational studies. J Eur Acad Dermatol Venereol 2018; 32:2244-2253. [PMID: 30079512 DOI: 10.1111/jdv.15204] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 07/12/2018] [Indexed: 02/05/2023]
Affiliation(s)
- R. Dai
- Department of Dermatology; Ningbo First Hospital; Ningbo University; Ningbo Zhejiang China
- Department of Dermatology; West China Hospital; Sichuan University; Chengdu Sichuan China
| | - W. Hua
- Department of Dermatology; West China Hospital; Sichuan University; Chengdu Sichuan China
| | - W. Chen
- Department of Dermatology; West China Hospital; Sichuan University; Chengdu Sichuan China
| | - L. Xiong
- Department of Dermatology; West China Hospital; Sichuan University; Chengdu Sichuan China
| | - L. Li
- Department of Dermatology; West China Hospital; Sichuan University; Chengdu Sichuan China
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43
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Jin MH, Zheng B, Xiong L, Zhou NJ, Wang L. Numerical simulations of critical dynamics in anisotropic magnetic films with the stochastic Landau-Lifshitz-Gilbert equation. Phys Rev E 2018; 98:022126. [PMID: 30253625 DOI: 10.1103/physreve.98.022126] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Indexed: 06/08/2023]
Abstract
With the stochastic Landau-Lifshitz-Gilbert (sLLG) equation, critical dynamic behaviors far from equilibrium or stationary around the order-disorder and pinning-depinning phase transitions in anisotropic magnetic films are investigated. From the dynamic relaxation with and without an external field, the Curie temperature and critical exponents of the order-disorder phase transition are accurately determined. For the pinning-depinning phase transition induced by quenched disorder, the nonstationary creep motion of domain wall activated by finite temperatures is simulated, and the thermal rounding exponent is extracted. The results show that the dynamic universality class of the sLLG equation is different from those of the Monte Carlo dynamics and quenched Edwards-Wilkinson equation, and it may lead to alternative understanding of experiments. The dynamic approach shows its great efficiency for the sLLG equation.
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Affiliation(s)
- M H Jin
- Department of Physics, Zhejiang University, Hangzhou 310027, People's Republic of China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, People's Republic of China
| | - B Zheng
- Department of Physics, Zhejiang University, Hangzhou 310027, People's Republic of China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, People's Republic of China
| | - L Xiong
- Department of Physics, Zhejiang University, Hangzhou 310027, People's Republic of China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, People's Republic of China
| | - N J Zhou
- Department of Physics, Hangzhou Normal University, Hangzhou 310036, People's Republic of China
| | - L Wang
- Department of Physics, Zhejiang University, Hangzhou 310027, People's Republic of China
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Xiong L, Barrett AN, Hua R, Ho SSY, Jun L, Chan KCA, Mei Z, Choolani M. Non-invasive prenatal testing for fetal inheritance of maternal β
-thalassaemia mutations using targeted sequencing and relative mutation dosage: a feasibility study. BJOG 2018; 125:461-468. [DOI: 10.1111/1471-0528.15045] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/20/2017] [Indexed: 11/26/2022]
Affiliation(s)
- L Xiong
- Department of Obstetrics and Gynaecology; Yong Loo Lin School of Medicine; National University of Singapore; Singapore
- Department of Gynaecology & Obstetrics; Nanfang Hospital; Southern Medical University; Guangzhou China
| | - AN Barrett
- Department of Obstetrics and Gynaecology; Yong Loo Lin School of Medicine; National University of Singapore; Singapore
| | - R Hua
- Department of Gynaecology & Obstetrics; Nanfang Hospital; Southern Medical University; Guangzhou China
| | - SSY Ho
- Department of Laboratory Medicine; Molecular Diagnosis Centre; National University Hospital; Singapore
| | - L Jun
- Department of Obstetrics and Gynaecology; Yong Loo Lin School of Medicine; National University of Singapore; Singapore
| | - KCA Chan
- Centre for Research into Circulating Fetal Nucleic Acids; Li Ka Shing Institute of Health Sciences; Chinese University of Hong Kong; Shatin New Territories Hong Kong
| | - Z Mei
- Department of Gynaecology & Obstetrics; Nanfang Hospital; Southern Medical University; Guangzhou China
| | - M Choolani
- Department of Obstetrics and Gynaecology; Yong Loo Lin School of Medicine; National University of Singapore; Singapore
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Hua W, Chen Q, Wan M, Lu J, Xiong L. The incidence of military training-related injuries in Chinese new recruits: a systematic review and meta-analysis. J ROY ARMY MED CORPS 2017; 164:309-313. [PMID: 29229645 DOI: 10.1136/jramc-2016-000710] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 09/20/2017] [Accepted: 09/23/2017] [Indexed: 11/03/2022]
Abstract
INTRODUCTION Training-related injuries are the main reason for disability, long-term rehabilitation, functional impairment and premature discharge from military service. The aim of this study was to identify the incidence of injuries in the training of Chinese new recruits via a systematic review of the literature. METHOD A systematic review and meta-analysis was conducted to evaluate the combined incidence of military training-related injuries in Chinese new recruits. The electronic databases of full-text journals were searched, and the Loney criteria were used to assess the quality of eligible articles. Summary estimates were obtained using random-effects models. Subgroup analyses and publication bias tests were performed. RESULTS Fifty-five eligible articles representing 109 611 Chinese new recruits met the inclusion criteria, of which 21 253 recruits were clinically diagnosed with military training-related injuries. The combined incidence of military training-related injuries in Chinese new recruits was found to be 21.04%. CONCLUSIONS An increased incidence of training injuries was found in more recent years, underscoring the need for further research on the risk factors associated with their causation.
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Affiliation(s)
- Wei Hua
- Department of Military Health Service, Second Military Medical University, Shanghai, China
| | - Q Chen
- Department of Military Health Service, Second Military Medical University, Shanghai, China
| | - M Wan
- Department of Orthopedics, PLA 422nd Hospital, Zhanjiang, China
| | - J Lu
- Department of Training, Second Military Medical University, Shanghai, China
| | - L Xiong
- Department of Military Health Service, Second Military Medical University, Shanghai, China
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Chen L, Xiong L, Li D, Gong H. First-principles calculation of Zr doping on cohesion properties of TiC/W interfaces. Fusion Engineering and Design 2017. [DOI: 10.1016/j.fusengdes.2017.11.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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47
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Wu T, Xiong L, Yuan MQ, Wang J, Liang KJ, Lin F. [An evolutionary analysis of HCV genotype 6 in Li people in Hainan Province, China]. Zhonghua Gan Zang Bing Za Zhi 2017; 25:864-867. [PMID: 29325282 DOI: 10.3760/cma.j.issn.1007-3418.2017.11.012] [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] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Affiliation(s)
- T Wu
- Department of Infectious Disease, Hainan General Hospital, Haikou 570311, China
| | - L Xiong
- Health Center, Hainan General Hospital, Haikou 570311, China
| | - M Q Yuan
- School of Public Health, Xiamen University, Xiamen 361005, China
| | - J Wang
- Department of Infectious Disease, Hainan General Hospital, Haikou 570311, China
| | - K J Liang
- Department of Infectious Disease, Baisha County People 's Hospital, Baisha County Hainan Province 572800, China
| | - F Lin
- Department of Infectious Disease, Hainan General Hospital, Haikou 570311, China
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Wang W, Xu C, Tan Q, Song Z, Zhuang W, Chen Y, Xiong L, Chen G, Fang M, Lv T, Song Y. P3.02-065 Lung Adenocarcinoma Patient with EGFR Kinase Domain Duplication (KDD) and Its Response to Icotinib: A Case Report. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Hirche Z, Zabaka K, Hirche C, Xiong L, Willis S. Open Right Hemicolectomy Is a Safe and Suitable Procedure for Surgical Training: A Comparative Study With 133 Patients. Scand J Surg 2017; 107:114-119. [PMID: 28950790 DOI: 10.1177/1457496917731191] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND AND AIMS A right hemicolectomy is a technically demanding procedure and the quality of the operation influences the short- and long-term outcomes. An increasing number of certified centers employ surgeons who are specialized in this procedure. Residency training is obligatory, but trainee surgeons often cannot perform technically demanding procedures because of economical and certification requirements imposed on the center. This study was performed to evaluate the suitability of right hemicolectomy as a training procedure. MATERIAL AND METHODS Between 2009 and 2013, 133 patients received a right hemicolectomy during cancer treatment. Patient data were analyzed in two cohorts: cohort 1 contained 90 patients who were operated by a resident under supervision, and cohort 2 included 43 patients who were operated by a specialized senior surgeon. Outcome and safety were evaluated by mortality rate, anastomotic leakage, complication rate, and operation time. The resection status and the number of resected lymph nodes were surrogate parameters for oncological quality. Gender, age, American Society of Anesthesiologists classification, body mass index, and general risk factors were compared in both cohorts. RESULTS There was no significant difference in the rate of anastomotic leakage between the two groups (p = 0.799). Oncological criteria were met in both cohorts and the oncological quality was similar between groups. Furthermore, there were no significant differences in risk factors, operating time, postoperative complications, and mortality between the groups. CONCLUSION Oncological open right hemicolectomy is a safe and suitable training procedure for residency training under standardized conditions.
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Affiliation(s)
- Z Hirche
- 1 Department of General, Visceral, Trauma and Thoracic Surgery, Klinikum der Stadt Ludwigshafen, Ludwigshafen am Rhein, Germany
| | - K Zabaka
- 1 Department of General, Visceral, Trauma and Thoracic Surgery, Klinikum der Stadt Ludwigshafen, Ludwigshafen am Rhein, Germany
| | - C Hirche
- 2 Department of Hand, Plastic, and Reconstructive Surgery, Trauma Center Ludwigshafen, Ludwigshafen, Germany.,3 Department of Plastic and Hand Surgery, University of Heidelberg, Heidelberg, Germany
| | - L Xiong
- 2 Department of Hand, Plastic, and Reconstructive Surgery, Trauma Center Ludwigshafen, Ludwigshafen, Germany.,3 Department of Plastic and Hand Surgery, University of Heidelberg, Heidelberg, Germany
| | - S Willis
- 1 Department of General, Visceral, Trauma and Thoracic Surgery, Klinikum der Stadt Ludwigshafen, Ludwigshafen am Rhein, Germany
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Cai HD, Hou J, Lyu YN, Xiong L, Lu MZ, Wu SL. [Efficacy and safety of tiotropium Respimat in the treatment of chronic obstructive pulmonary disease: systematic review]. Zhonghua Jie He He Hu Xi Za Zhi 2017; 40:596-603. [PMID: 28810313 DOI: 10.3760/cma.j.issn.1001-0939.2017.08.011] [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] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Objective: To evaluate the efficacy and safety of tiotropium Respimat in the treatment of chronic obstructive pulmonary disease (COPD) according to the Cochrane systematic evaluation. Methods: The Cochrane Library, PubMed, EMbase, CNKI, VIP and CBM, Wanfang Data were searched(from the foundation date to Jan. 2016) for the randomized controlled trials (RCTs) of tiotropium Respimat in the treatment of patients with COPD. Two reviewers independently retrieved the RCTs according to the inclusion and exclusion criteria, assessed the methodological quality of the included trials.and performed statistical analysis on the data using RevMan 5.3 software. Results: Totally 11 RCTs on efficacy were finally included.The results of the combined analysis showed that FEV(1) was significantly improved in the tiotropium Respimat group than that in the placebo group[MD=0.12, 95%CI(0.10-0.14), P<0.000 01], while FEV(1) was similar between the tiotropium Respimat group and the tiotropium HandiHaler group[5 μg: MD=0.00, 95%CI(-0.04-0.04), P=0.94; 2.5 μg: MD=-0.04, 95%CI(-0.10-0.01), P=0.12; 10 μg: MD=0.02, 95%CI(-0.06-0.09), P=0.66]. FVC was significantly improved in the tiotropium Respimat group than that in the placebo group[MD=0.18, 95%CI(0.09-0.28), P=0.0002], while FVC was similar between the tiotropium Respimat group and the HandiHaler group[2.5 μg: MD=-0.06, 95%CI(-0.16-0.04), P=0.24; 5 μg: MD=-0.00, 95%CI(-0.08-0.08), P=1.00; 10 μg: MD=0.02, 95%CI(-0.14-0.19), P=0.78]. The risk of acute exacerbations was lower in the tiotropium Respimat group (5 μg / kg) than in the placebo group [OR=0.72, 95%CI(0.60-0.86), P=0.000 3]. It was similar in the tiotropium Respimat group (5 μg) and the HandiHaler group[OR=1.01, 95%CI(0.94-1.09), P=0.71]. The SGRQ total score of the tiotropium Respimat group (5 μg) was significantly different from that of the placebo group[MD=-3.6, 95%CI(-3.88--3.32), P<0.000 01]. C(max, ss) and AUC(0-6 h, ss) were also similar between the tiotropium Respimat group and the HandiHaler group[MD=0.2, 95%CI(-5.1-5.5), P=0.94]; MD=-1.01, 95%CI(-11.78-9.77), P=0.85]. Nine RCTs were included in the evaluation of the incident rates of adverse drug reactions(ADR). There was no significant difference between the tiotropium Respimat group HandiHaler group and the placebo group[RR=0.95, 95%CI(0.89-1.00), P=0.05], [OR=1.07, 95%CI(1.00-1.16), P=0.06]. Conclusions: The efficacy and safety of tiotropium Respimat was similar to tiotropium HandiHaler in the treatment of COPD. They can effectively improve the pulmonary function and clinical symptoms of patients. But the long-term efficacy and safety of tiotropium Respimat still need to be confirmed by higher quality and larger RCTs with long-term follow-up.
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Affiliation(s)
- H D Cai
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
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