51
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Tsuboi M, Wu YL, He J, John T, Grohe C, Majem M, Goldman J, Laktionov K, Kim SW, Kato T, Vu H, Akewanlop C, Yu CJ, de Marinis F, Domine M, Shepherd F, Yan C, Atasoy A, Herbst R. LBA1 Osimertinib adjuvant therapy in patients (pts) with resected EGFR mutated (EGFRm) NSCLC (ADAURA): Central nervous system (CNS) disease recurrence. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.2279] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Wang S, Yan C, Yang F. 33P BLAST-guided mappability knowledgebase facilitates accurate detection of somatic variants. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.185] [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: 10/23/2022] Open
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53
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Su L, Li X, Yan C, Yang Y. 966P Activation of the Wnt/PCP signaling pathway is an adverse prognostic predictor in patients with low grade glioma (LGG). Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1081] [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: 11/25/2022] Open
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54
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Yan C, Xiong Y, Panayi AC, Mi B, Liu G. Dispatch of the Medical Force from Wuhan to Beijing: City-wide nucleic acid census. Br J Surg 2020; 107:e476. [PMID: 32809214 PMCID: PMC7461292 DOI: 10.1002/bjs.11935] [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: 06/29/2020] [Accepted: 06/29/2020] [Indexed: 11/11/2022]
Affiliation(s)
- Chenchen Yan
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yuan Xiong
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Adriana C Panayi
- Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, 02115, USA
| | - Bobin Mi
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Guohui Liu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
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Yang S, Huan X, Yan C, Song J, Luo SS, Lu JH, Zhao CB. [Efficacy of thymectomy in patients with non-thymoma myasthenia gravis]. Zhonghua Yi Xue Za Zhi 2020; 100:2297-2302. [PMID: 32746602 DOI: 10.3760/cma.j.cn112137-20191206-02664] [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 compare the efficacy between thymectomy plus prednisone and prednisone alone in patients with non-thymoma myasthenia gravis (MG). Methods: Thirty generalized MG patients without thymoma who underwent thymectomy were collected as the operation group, and thirty-nine patients without thymectomy who were treated with prednisone alone were matched as the control group. The start point was the enrollment time and the endpoint event was the "clinical remission" (including complete stabilization remission, drug remission, and poor performance). The survival curve was used to analyze the difference of endpoint event time between the two groups. Besides, a 12-month follow-up study was conducted to compare relevant clinical indicators between the two groups. Results: There was no significant difference in the occurrence time of endpoint events between the two groups (P=0.614). After 6-month follow-up, no significant differences were found in clinical remission rate, the dosage of pyridostigmine bromide and prednisone, the peak dosage of prednisone, the use of other immunosuppressive medications and the rate of hospitalization for exacerbation of disease between the two groups (all P>0.05). After 12-month follow-up, the dosage of prednisone and pyridostigmine in the operation group was significantly lower than that in the control group (5(0,10)mg/d vs 7.5(5,10)mg/d and 30(0,105)mg/d vs 90(15,180)mg/d; P=0.038, 0.032). Conclusion: In patients with mild to moderate non-thymoma generalized MG, thymectomy does not achieve faster remission, but it does reduce the long-term dosage of prednisone and bromopyrazine.
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Affiliation(s)
- S Yang
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai 200040, China [Yang Song is now working at the Department of Neurology, the Third Affiliated Hospital of Soochow University (Changzhou First People's Hospital), Changzhou 213003, China]
| | - X Huan
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - C Yan
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - J Song
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - S S Luo
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - J H Lu
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - C B Zhao
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai 200040, China
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56
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Yang R, Li Y, Mehmood S, Yan C, Huang Y, Cai J, Ji J, Pan W, Zhang W, Chen Y. Polysaccharides from Armillariella tabescens mycelia ameliorate renal damage in type 2 diabetic mice. Int J Biol Macromol 2020; 162:1682-1691. [PMID: 32758603 DOI: 10.1016/j.ijbiomac.2020.08.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 07/29/2020] [Accepted: 08/01/2020] [Indexed: 12/21/2022]
Abstract
Diabetic kidney disease (DKD), accompanied by chronic low-grade inflammation, is one of the most common complications of diabetes. Armillariella tabescens has potent anti-inflammatory and immunomodulatory properties. The purpose of the present study was to investigate the effects of polysaccharides from Armillariella tabescens mycelia (AT) on the kidney in type 2 diabetic mice and explore the underlying mechanism. The mice were randomized into 4 groups: normal control (NC), diabetic control (DC), DC + 200 mg/kg AT (LAT), and DC + 400 mg/kg AT (HAT). The results showed that compared with the NC group, the levels of fasting blood glucose, renal function-related indices, and serum pro-inflammatory mediators including lipopolysaccharide (LPS), interleukin (IL)-1β, and IL-18 were elevated; the renal morphopathological alterations, oxidative stress, and nucleotide-binding oligomerization domain-like receptor protein 3 inflammasome-mediated inflammation and renal fibrosis were aggravated; the intestinal microbiota dysbiosis and colonic inflammation and barrier dysfunction were deteriorated in the DC group. After supplementation with AT, the aforementioned indices were ameliorated in the AT treatment groups, especially in the HAT group. In conclusion, these results demonstrated that modulating the intestinal microbiota and inflammatory reaction was implicated in the effects of AT against DKD in mice.
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Affiliation(s)
- Rui Yang
- School of Life Sciences, Anhui University, Hefei 230601, Anhui, China
| | - Yangdan Li
- School of Life Sciences, Anhui University, Hefei 230601, Anhui, China
| | - Shomaila Mehmood
- School of Life Sciences, Anhui University, Hefei 230601, Anhui, China
| | - Chenchen Yan
- School of Life Sciences, Anhui University, Hefei 230601, Anhui, China
| | - Yuzhe Huang
- School of Life Sciences, Anhui University, Hefei 230601, Anhui, China
| | - Jingjing Cai
- Pharmacy Department, Anhui Medical College, Hefei 230601, Anhui, China
| | - Junqiu Ji
- Hefei Lifeon Pharmaceutical Co., Ltd., Hefei 230601, Anhui, China
| | - Wenjuan Pan
- School of Life Sciences, Anhui University, Hefei 230601, Anhui, China
| | - Wenna Zhang
- School of Life Sciences, Anhui University, Hefei 230601, Anhui, China
| | - Yan Chen
- School of Life Sciences, Anhui University, Hefei 230601, Anhui, China; Key Laboratory of Modern Biomanufacturing of Anhui Province, Hefei 230601, Anhui, China; Anhui Key Laboratory of Ecological Engineering and Biotechnology, Hefei 230601, Anhui, China.
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57
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Mi B, Yan C, Xue H, Chen L, Panayi AC, Hu L, Hu Y, Cao F, Sun Y, Zhou W, Xiong Y, Liu G. Inhibition of Circulating miR-194-5p Reverses Osteoporosis through Wnt5a/β-Catenin-Dependent Induction of Osteogenic Differentiation. Mol Ther Nucleic Acids 2020; 21:814-823. [PMID: 32791453 PMCID: PMC7419275 DOI: 10.1016/j.omtn.2020.07.023] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 06/26/2020] [Accepted: 07/20/2020] [Indexed: 01/14/2023]
Abstract
Mesenchymal stem cells (MSCs) critically contribute to bone formation, and proper induction of osteogenic differentiation can lead to an increase in bone mass. In the present study, we reported that an increased miR-194-5p level in plasma is inversely related to the degree of bone formation in osteoporosis patients. We also noted that increased miR-194-5p in the MSCs of ovariectomized (OVX) mice and agomiR-194-5p manipulation of miR-194-5p significantly suppressed bone formation, both in aged and OVX mice. Furthermore, our in vitro study showed that overexpression of miR-194-5p suppresses osteogenic differentiation, as evidenced by the decreased bone formation marker genes and matrix mineralization. The luciferase assay indicated that Wnt family member 5a (Wnt5a) is a target gene of miR-194-5p that positively regulates osteogenic differentiation. Collectively, these data indicated that miR-194-5p inhibition may be a potential strategy for osteoporosis prevention.
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Affiliation(s)
- Bobin Mi
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Chenchen Yan
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Hang Xue
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Lang Chen
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Adriana C Panayi
- Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02215, USA
| | - Liangcong Hu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yiqiang Hu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Faqi Cao
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yun Sun
- Department of Neurosurgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Wu Zhou
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yuan Xiong
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
| | - Guohui Liu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
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58
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Garcia EG, Veloso A, Oliveira ML, Allen JR, Loontiens S, Brunson D, Do D, Yan C, Morris R, Iyer S, Garcia SP, Iftimia N, Van Loocke W, Matthijssens F, McCarthy K, Barata JT, Speleman F, Taghon T, Gutierrez A, Van Vlierberghe P, Haas W, Blackburn JS, Langenau DM. PRL3 enhances T-cell acute lymphoblastic leukemia growth through suppressing T-cell signaling pathways and apoptosis. Leukemia 2020; 35:679-690. [PMID: 32606318 PMCID: PMC8009053 DOI: 10.1038/s41375-020-0937-3] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 06/10/2020] [Accepted: 06/16/2020] [Indexed: 01/06/2023]
Abstract
T cell acute lymphoblastic leukemia (T-ALL) is an aggressive malignancy of thymocytes and is largely driven by the NOTCH/MYC pathway. Yet, additional oncogenic drivers are required for transformation. Here, we identify protein tyrosine phosphatase type 4 A3 (PRL3) as a collaborating oncogenic driver in T-ALL. PRL3 is expressed in a large fraction of primary human T-ALLs and is commonly co-amplified with MYC. PRL3 also synergized with MYC to initiate early-onset ALL in transgenic zebrafish and was required for human T-ALL growth and maintenance. Mass spectrometry phosphoproteomic analysis and mechanistic studies uncovered that PRL3 suppresses downstream T cell phosphorylation signaling pathways, including those modulated by VAV1, and subsequently suppresses apoptosis in leukemia cells. Taken together, our studies have identified new roles for PRL3 as a collaborating oncogenic driver in human T-ALL and suggest that therapeutic targeting of the PRL3 phosphatase will likely be a useful treatment strategy for T-ALL.
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Affiliation(s)
- E G Garcia
- Department of Pathology, Massachusetts General Research Institute, Boston, MA, 02114, USA.,Center of Cancer Research, Massachusetts General Hospital, Charlestown, MA, 02129, USA.,Harvard Stem Cell Institute, Boston, MA, 02114, USA.,Center of Regenerative Medicine, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - A Veloso
- Department of Pathology, Massachusetts General Research Institute, Boston, MA, 02114, USA.,Center of Cancer Research, Massachusetts General Hospital, Charlestown, MA, 02129, USA.,Harvard Stem Cell Institute, Boston, MA, 02114, USA.,Center of Regenerative Medicine, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - M L Oliveira
- Instituto de Medicina Molecular João Lobo Antunes Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
| | - J R Allen
- Department of Pathology, Massachusetts General Research Institute, Boston, MA, 02114, USA.,Center of Cancer Research, Massachusetts General Hospital, Charlestown, MA, 02129, USA.,Harvard Stem Cell Institute, Boston, MA, 02114, USA.,Center of Regenerative Medicine, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - S Loontiens
- Cancer Research Institute Ghent, Ghent, Belgium
| | - D Brunson
- Department of Pathology, Massachusetts General Research Institute, Boston, MA, 02114, USA.,Center of Cancer Research, Massachusetts General Hospital, Charlestown, MA, 02129, USA.,Harvard Stem Cell Institute, Boston, MA, 02114, USA.,Center of Regenerative Medicine, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - D Do
- Department of Pathology, Massachusetts General Research Institute, Boston, MA, 02114, USA.,Center of Cancer Research, Massachusetts General Hospital, Charlestown, MA, 02129, USA.,Harvard Stem Cell Institute, Boston, MA, 02114, USA.,Center of Regenerative Medicine, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - C Yan
- Department of Pathology, Massachusetts General Research Institute, Boston, MA, 02114, USA.,Center of Cancer Research, Massachusetts General Hospital, Charlestown, MA, 02129, USA.,Harvard Stem Cell Institute, Boston, MA, 02114, USA.,Center of Regenerative Medicine, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - R Morris
- Center of Cancer Research, Massachusetts General Hospital, Charlestown, MA, 02129, USA
| | - S Iyer
- Department of Pathology, Massachusetts General Research Institute, Boston, MA, 02114, USA.,Center of Cancer Research, Massachusetts General Hospital, Charlestown, MA, 02129, USA.,Harvard Stem Cell Institute, Boston, MA, 02114, USA.,Center of Regenerative Medicine, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - S P Garcia
- Department of Pathology, Massachusetts General Research Institute, Boston, MA, 02114, USA.,Center of Cancer Research, Massachusetts General Hospital, Charlestown, MA, 02129, USA.,Harvard Stem Cell Institute, Boston, MA, 02114, USA.,Center of Regenerative Medicine, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - N Iftimia
- Department of Pathology, Massachusetts General Research Institute, Boston, MA, 02114, USA.,Center of Cancer Research, Massachusetts General Hospital, Charlestown, MA, 02129, USA.,Harvard Stem Cell Institute, Boston, MA, 02114, USA.,Center of Regenerative Medicine, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - W Van Loocke
- Cancer Research Institute Ghent, Ghent, Belgium.,Department of Biomolecular Medicine and Center for Medical Genetics, Ghent University, Ghent, Belgium
| | - F Matthijssens
- Cancer Research Institute Ghent, Ghent, Belgium.,Department of Biomolecular Medicine and Center for Medical Genetics, Ghent University, Ghent, Belgium
| | - K McCarthy
- Department of Pathology, Massachusetts General Research Institute, Boston, MA, 02114, USA.,Center of Cancer Research, Massachusetts General Hospital, Charlestown, MA, 02129, USA.,Harvard Stem Cell Institute, Boston, MA, 02114, USA.,Center of Regenerative Medicine, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - J T Barata
- Instituto de Medicina Molecular João Lobo Antunes Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
| | - F Speleman
- Cancer Research Institute Ghent, Ghent, Belgium.,Department of Biomolecular Medicine and Center for Medical Genetics, Ghent University, Ghent, Belgium
| | - T Taghon
- Department of Diagnostic Sciences, Ghent University, Ghent, Belgium
| | - A Gutierrez
- Division of Hematology/Oncology, Boston Children's Hospital and Dana-Farber Cancer Institute, Boston, USA
| | - P Van Vlierberghe
- Cancer Research Institute Ghent, Ghent, Belgium.,Department of Biomolecular Medicine and Center for Medical Genetics, Ghent University, Ghent, Belgium
| | - W Haas
- Department of Pathology, Massachusetts General Research Institute, Boston, MA, 02114, USA.,Center of Cancer Research, Massachusetts General Hospital, Charlestown, MA, 02129, USA.,Harvard Stem Cell Institute, Boston, MA, 02114, USA.,Center of Regenerative Medicine, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - J S Blackburn
- Department of Molecular and Cellular Biochemistry, University of Kentucky College of Medicine, Lexington, KY, 40536, USA
| | - D M Langenau
- Department of Pathology, Massachusetts General Research Institute, Boston, MA, 02114, USA. .,Center of Cancer Research, Massachusetts General Hospital, Charlestown, MA, 02129, USA. .,Harvard Stem Cell Institute, Boston, MA, 02114, USA. .,Center of Regenerative Medicine, Massachusetts General Hospital, Boston, MA, 02114, USA.
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Xiong Y, Chen L, Yu T, Yan C, Zhou W, Cao F, You X, Zhang Y, Sun Y, Liu J, Xue H, Hu Y, Chen D, Mi B, Liu G. Inhibition of circulating exosomal microRNA-15a-3p accelerates diabetic wound repair. Aging (Albany NY) 2020; 12:8968-8986. [PMID: 32439831 PMCID: PMC7288917 DOI: 10.18632/aging.103143] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [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: 01/24/2020] [Accepted: 03/31/2020] [Indexed: 04/07/2023]
Abstract
Diabetic foot ulcers are a common complication of diabetes, and are usually incurable in the clinic. Exosomes (carriers that transfer endogenous molecules) from diabetic patients' blood have been demonstrated to suppress diabetic wound repair. In this study, we investigated the effects of circulating exosomal microRNA-15a-3p (miR-15a-3p) on diabetic wound repair. Exosomes were extracted from diabetic patients' blood, and were found to inhibit diabetic wound repair in vitro and in vivo. miR-15a-3p was upregulated in diabetic exosomes, and impaired wound healing. When miR-15a-3p was knocked down in diabetic exosomes, their negative effects were partially reversed both in vitro and in vivo. NADPH oxidase 5 (NOX5) was identified as a potential target of miR-15a-3p, and the inhibition of NOX5 reduced the release of reactive oxygen species, thereby impairing the functionality of human umbilical vein endothelial cells. In summary, inhibition of circulating exosomal miR-15a-3p accelerated diabetic wound repair by activating NOX5, providing a novel therapeutic target for diabetic foot ulcer therapy.
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Affiliation(s)
- Yuan Xiong
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Lang Chen
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Tao Yu
- Department of Orthopedic Surgery, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
| | - Chenchen Yan
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Wu Zhou
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Faqi Cao
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Xiaomeng You
- Department of Orthopedic Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02125, USA
| | - Yingqi Zhang
- Department of Orthopedic Surgery, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China
| | - Yun Sun
- Department of Neurosurgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Jing Liu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Hang Xue
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yiqiang Hu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Dong Chen
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Bobin Mi
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Guohui Liu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
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Yang XP, Yan C, Yuan Z, Zhou J, Miao JX, He R, Zhu G. Association study of SNCA gene polymorphisms with schizophrenia in a Chinese North Han population. Eur Rev Med Pharmacol Sci 2020; 24:4979-4987. [PMID: 32432761 DOI: 10.26355/eurrev_202005_21189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Previous studies suggested that the alpha-synapse protein (SNCA) gene and its coding product α-synuclein (α-Syn) may play a role in the pathogenesis of neurodegenerative diseases. The mutation of SNCA can influence the formation of nerve fibers and the function of dopaminergic neurons, and that may be related to addictive behavior, such as alcohol dependence. SNCA may overlap with the pathogenesis of schizophrenia and Parkinson's disease or alcohol dependence associated with the dopamine pathway. The aim was to determine the association between three SNCA SNPs (rs3822086C/T, rs11931074G/T, and rs356219A/G) and schizophrenia in a Chinese North Han population. PATIENTS AND METHODS A total of 878 subjects, with or without schizophrenia, were included in our study. DNA purification, Polymerase Chain Reaction (PCR) amplification, and subsequent restriction fragment length polymorphism (RFLP) analysis were manipulated to determine genotypes. RESULTS Between the schizophrenia group and healthy group, neither the genotype nor allele frequencies of rs3822086C/T, rs11931074G/T, or rs356219A/G differed significantly in either the total sample or the subgroups. In the haplotype analysis, the ATT and GTT haplotype frequencies differed significantly between the patients and controls in the total sample (χ2=6.052, p=0.0139; χ2=4.508, p=0.0337). In the female subgroup, the ATT haplotype frequency differed significantly between the patients and controls (χ2=4.219, p=0.04). CONCLUSIONS There was no association between SNCA polymorphisms and schizophrenia in the North Han Chinese population, and the ATT haplotype may be a susceptibility factor for schizophrenia.
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Affiliation(s)
- X-P Yang
- Department of Psychiatry, The First Affiliated Hospital of China Medical University, Shenyang, China.
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Mi B, Chen L, Xiong Y, Yan C, Xue H, Panayi AC, Liu J, Hu L, Hu Y, Cao F, Sun Y, Zhou W, Liu G. Saliva exosomes-derived UBE2O mRNA promotes angiogenesis in cutaneous wounds by targeting SMAD6. J Nanobiotechnology 2020; 18:68. [PMID: 32375794 PMCID: PMC7203970 DOI: 10.1186/s12951-020-00624-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Accepted: 04/27/2020] [Indexed: 01/08/2023] Open
Abstract
Background Enhancing angiogenesis is critical for accelerating wound healing. Application of different types of exosomes (Exos) to promote angiogenesis represents a novel strategy for enhanced wound repair. Saliva is known to accelerate wound healing, but the underlying mechanisms remain unclear. Results Our results have demonstrated that saliva-derived exosomes (saliva-Exos) induce human umbilical vein endothelial cells (HUVEC) proliferation, migration, and angiogenesis in vitro, and promote cutaneous wound healing in vivo. Further experiments documented that Ubiquitin-conjugating enzyme E2O (UBE2O) is one of the main mRNAs of saliva-Exos, and activation of UBE2O has effects similar to those of saliva-Exos, both in vitro and in vivo. Mechanistically, UBE2O decreases the level of SMAD family member 6 (SMAD6), thereby activating bone morphogenetic protein 2 (BMP2), which, in turn, induces angiogenesis. Conclusions The present work suggests that administration of saliva-Exos and UBE2O represents a promising strategy for enhancing wound healing through promotion of angiogenesis.
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Affiliation(s)
- Bobin Mi
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Lang Chen
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yuan Xiong
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Chenchen Yan
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Hang Xue
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Adriana C Panayi
- Department of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Jing Liu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Liangcong Hu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yiqiang Hu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Faqi Cao
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yun Sun
- Department of Neurosurgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - Wu Zhou
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - Guohui Liu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
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Yan C, Nie W, Vogel AL, Dada L, Lehtipalo K, Stolzenburg D, Wagner R, Rissanen MP, Xiao M, Ahonen L, Fischer L, Rose C, Bianchi F, Gordon H, Simon M, Heinritzi M, Garmash O, Roldin P, Dias A, Ye P, Hofbauer V, Amorim A, Bauer PS, Bergen A, Bernhammer AK, Breitenlechner M, Brilke S, Buchholz A, Mazon SB, Canagaratna MR, Chen X, Ding A, Dommen J, Draper DC, Duplissy J, Frege C, Heyn C, Guida R, Hakala J, Heikkinen L, Hoyle CR, Jokinen T, Kangasluoma J, Kirkby J, Kontkanen J, Kürten A, Lawler MJ, Mai H, Mathot S, Mauldin RL, Molteni U, Nichman L, Nieminen T, Nowak J, Ojdanic A, Onnela A, Pajunoja A, Petäjä T, Piel F, Quéléver LLJ, Sarnela N, Schallhart S, Sengupta K, Sipilä M, Tomé A, Tröstl J, Väisänen O, Wagner AC, Ylisirniö A, Zha Q, Baltensperger U, Carslaw KS, Curtius J, Flagan RC, Hansel A, Riipinen I, Smith JN, Virtanen A, Winkler PM, Donahue NM, Kerminen VM, Kulmala M, Ehn M, Worsnop DR. Size-dependent influence of NO x on the growth rates of organic aerosol particles. Sci Adv 2020; 6:eaay4945. [PMID: 32518819 PMCID: PMC7253163 DOI: 10.1126/sciadv.aay4945] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 03/19/2020] [Indexed: 05/24/2023]
Abstract
Atmospheric new-particle formation (NPF) affects climate by contributing to a large fraction of the cloud condensation nuclei (CCN). Highly oxygenated organic molecules (HOMs) drive the early particle growth and therefore substantially influence the survival of newly formed particles to CCN. Nitrogen oxide (NOx) is known to suppress the NPF driven by HOMs, but the underlying mechanism remains largely unclear. Here, we examine the response of particle growth to the changes of HOM formation caused by NOx. We show that NOx suppresses particle growth in general, but the suppression is rather nonuniform and size dependent, which can be quantitatively explained by the shifted HOM volatility after adding NOx. By illustrating how NOx affects the early growth of new particles, a critical step of CCN formation, our results help provide a refined assessment of the potential climatic effects caused by the diverse changes of NOx level in forest regions around the globe.
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Affiliation(s)
- C. Yan
- Institute for Atmospheric and Earth System Research/INAR–Physics, Faculty of Science, University of Helsinki, 00560 Helsinki, Finland
| | - W. Nie
- Joint International Research Laboratory of Atmospheric and Earth System Sciences, School of Atmospheric Sciences, Nanjing University, Nanjing, China
| | - A. L. Vogel
- CERN, CH-1211, Geneva, Switzerland
- Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232 Villigen, Switzerland
| | - L. Dada
- Institute for Atmospheric and Earth System Research/INAR–Physics, Faculty of Science, University of Helsinki, 00560 Helsinki, Finland
| | - K. Lehtipalo
- Institute for Atmospheric and Earth System Research/INAR–Physics, Faculty of Science, University of Helsinki, 00560 Helsinki, Finland
- Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232 Villigen, Switzerland
- Finnish Meteorological Institute, Erik Palménin aukio 1, 00560 Helsinki, Finland
| | - D. Stolzenburg
- University of Vienna, Faculty of Physics, Boltzmanngasse 5, 1090 Wien, Austria
| | - R. Wagner
- Institute for Atmospheric and Earth System Research/INAR–Physics, Faculty of Science, University of Helsinki, 00560 Helsinki, Finland
| | - M. P. Rissanen
- Institute for Atmospheric and Earth System Research/INAR–Physics, Faculty of Science, University of Helsinki, 00560 Helsinki, Finland
| | - M. Xiao
- Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232 Villigen, Switzerland
| | - L. Ahonen
- Institute for Atmospheric and Earth System Research/INAR–Physics, Faculty of Science, University of Helsinki, 00560 Helsinki, Finland
| | - L. Fischer
- University of Innsbruck, Institute for Ion and Applied Physics, 6020 Innsbruck, Austria
| | - C. Rose
- Institute for Atmospheric and Earth System Research/INAR–Physics, Faculty of Science, University of Helsinki, 00560 Helsinki, Finland
| | - F. Bianchi
- Institute for Atmospheric and Earth System Research/INAR–Physics, Faculty of Science, University of Helsinki, 00560 Helsinki, Finland
- Aerosol and Haze Laboratory, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, China
| | - H. Gordon
- CERN, CH-1211, Geneva, Switzerland
- University of Leeds, Leeds LS2 9JT, UK
| | - M. Simon
- Goethe University Frankfurt, Institute for Atmospheric and Environmental Sciences, Altenhöferallee 1, 60438 Frankfurt am Main, Germany
| | - M. Heinritzi
- Goethe University Frankfurt, Institute for Atmospheric and Environmental Sciences, Altenhöferallee 1, 60438 Frankfurt am Main, Germany
| | - O. Garmash
- Institute for Atmospheric and Earth System Research/INAR–Physics, Faculty of Science, University of Helsinki, 00560 Helsinki, Finland
| | - P. Roldin
- Division of Nuclear Physics, Department of Physics, Lund University, P. O. Box 118, SE-221 00 Lund, Sweden
| | - A. Dias
- CERN, CH-1211, Geneva, Switzerland
- CENTRA and FCUL, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
| | - P. Ye
- Carnegie Mellon University Center for Atmospheric Particle Studies, 5000 Forbes Ave., Pittsburgh, PA 15213, USA
- Aerodyne Research Inc., Billerica, MA 01821, USA
| | - V. Hofbauer
- Carnegie Mellon University Center for Atmospheric Particle Studies, 5000 Forbes Ave., Pittsburgh, PA 15213, USA
| | - A. Amorim
- CENTRA and FCUL, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
| | - P. S. Bauer
- University of Vienna, Faculty of Physics, Boltzmanngasse 5, 1090 Wien, Austria
| | - A. Bergen
- Goethe University Frankfurt, Institute for Atmospheric and Environmental Sciences, Altenhöferallee 1, 60438 Frankfurt am Main, Germany
| | - A.-K. Bernhammer
- University of Innsbruck, Institute for Ion and Applied Physics, 6020 Innsbruck, Austria
| | - M. Breitenlechner
- University of Innsbruck, Institute for Ion and Applied Physics, 6020 Innsbruck, Austria
| | - S. Brilke
- University of Vienna, Faculty of Physics, Boltzmanngasse 5, 1090 Wien, Austria
- Goethe University Frankfurt, Institute for Atmospheric and Environmental Sciences, Altenhöferallee 1, 60438 Frankfurt am Main, Germany
| | - A. Buchholz
- University of Eastern Finland, Department of Applied Physics, P.O. Box 1627, 70211 Kuopio, Finland
| | - S. Buenrostro Mazon
- Institute for Atmospheric and Earth System Research/INAR–Physics, Faculty of Science, University of Helsinki, 00560 Helsinki, Finland
| | | | - X. Chen
- Institute for Atmospheric and Earth System Research/INAR–Physics, Faculty of Science, University of Helsinki, 00560 Helsinki, Finland
| | - A. Ding
- Joint International Research Laboratory of Atmospheric and Earth System Sciences, School of Atmospheric Sciences, Nanjing University, Nanjing, China
| | - J. Dommen
- Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232 Villigen, Switzerland
| | - D. C. Draper
- Department of Chemistry, University of California, Irvine, CA 92697, USA
| | - J. Duplissy
- Institute for Atmospheric and Earth System Research/INAR–Physics, Faculty of Science, University of Helsinki, 00560 Helsinki, Finland
| | - C. Frege
- Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232 Villigen, Switzerland
| | - C. Heyn
- Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232 Villigen, Switzerland
| | - R. Guida
- CERN, CH-1211, Geneva, Switzerland
| | - J. Hakala
- Institute for Atmospheric and Earth System Research/INAR–Physics, Faculty of Science, University of Helsinki, 00560 Helsinki, Finland
| | - L. Heikkinen
- Institute for Atmospheric and Earth System Research/INAR–Physics, Faculty of Science, University of Helsinki, 00560 Helsinki, Finland
| | - C. R. Hoyle
- Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232 Villigen, Switzerland
| | - T. Jokinen
- Institute for Atmospheric and Earth System Research/INAR–Physics, Faculty of Science, University of Helsinki, 00560 Helsinki, Finland
| | - J. Kangasluoma
- Institute for Atmospheric and Earth System Research/INAR–Physics, Faculty of Science, University of Helsinki, 00560 Helsinki, Finland
- Aerosol and Haze Laboratory, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, China
| | - J. Kirkby
- CERN, CH-1211, Geneva, Switzerland
- Goethe University Frankfurt, Institute for Atmospheric and Environmental Sciences, Altenhöferallee 1, 60438 Frankfurt am Main, Germany
| | - J. Kontkanen
- Institute for Atmospheric and Earth System Research/INAR–Physics, Faculty of Science, University of Helsinki, 00560 Helsinki, Finland
| | - A. Kürten
- Goethe University Frankfurt, Institute for Atmospheric and Environmental Sciences, Altenhöferallee 1, 60438 Frankfurt am Main, Germany
| | - M. J. Lawler
- Department of Chemistry, University of California, Irvine, CA 92697, USA
| | - H. Mai
- California Institute of Technology, 210-41, Pasadena, CA 91125, USA
| | | | - R. L. Mauldin
- Carnegie Mellon University Center for Atmospheric Particle Studies, 5000 Forbes Ave., Pittsburgh, PA 15213, USA
- Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO 80309, USA
| | - U. Molteni
- Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232 Villigen, Switzerland
| | - L. Nichman
- School of Earth and Environmental Science, University of Manchester, Manchester M13 9PL, UK
| | - T. Nieminen
- Institute for Atmospheric and Earth System Research/INAR–Physics, Faculty of Science, University of Helsinki, 00560 Helsinki, Finland
| | - J. Nowak
- Aerodyne Research Inc., Billerica, MA 01821, USA
| | - A. Ojdanic
- University of Vienna, Faculty of Physics, Boltzmanngasse 5, 1090 Wien, Austria
| | | | - A. Pajunoja
- University of Eastern Finland, Department of Applied Physics, P.O. Box 1627, 70211 Kuopio, Finland
| | - T. Petäjä
- Institute for Atmospheric and Earth System Research/INAR–Physics, Faculty of Science, University of Helsinki, 00560 Helsinki, Finland
- Joint International Research Laboratory of Atmospheric and Earth System Sciences, School of Atmospheric Sciences, Nanjing University, Nanjing, China
| | - F. Piel
- Goethe University Frankfurt, Institute for Atmospheric and Environmental Sciences, Altenhöferallee 1, 60438 Frankfurt am Main, Germany
| | - L. L. J. Quéléver
- Institute for Atmospheric and Earth System Research/INAR–Physics, Faculty of Science, University of Helsinki, 00560 Helsinki, Finland
| | - N. Sarnela
- Institute for Atmospheric and Earth System Research/INAR–Physics, Faculty of Science, University of Helsinki, 00560 Helsinki, Finland
| | - S. Schallhart
- Institute for Atmospheric and Earth System Research/INAR–Physics, Faculty of Science, University of Helsinki, 00560 Helsinki, Finland
| | | | - M. Sipilä
- Institute for Atmospheric and Earth System Research/INAR–Physics, Faculty of Science, University of Helsinki, 00560 Helsinki, Finland
| | - A. Tomé
- IDL Universidade da Beira Interior, Covilhã, Portugal
| | - J. Tröstl
- Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232 Villigen, Switzerland
| | - O. Väisänen
- University of Eastern Finland, Department of Applied Physics, P.O. Box 1627, 70211 Kuopio, Finland
| | - A. C. Wagner
- Goethe University Frankfurt, Institute for Atmospheric and Environmental Sciences, Altenhöferallee 1, 60438 Frankfurt am Main, Germany
| | - A. Ylisirniö
- University of Eastern Finland, Department of Applied Physics, P.O. Box 1627, 70211 Kuopio, Finland
| | - Q. Zha
- Institute for Atmospheric and Earth System Research/INAR–Physics, Faculty of Science, University of Helsinki, 00560 Helsinki, Finland
| | - U. Baltensperger
- Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232 Villigen, Switzerland
| | | | - J. Curtius
- Goethe University Frankfurt, Institute for Atmospheric and Environmental Sciences, Altenhöferallee 1, 60438 Frankfurt am Main, Germany
| | - R. C. Flagan
- California Institute of Technology, 210-41, Pasadena, CA 91125, USA
| | - A. Hansel
- Institute for Atmospheric and Earth System Research/INAR–Physics, Faculty of Science, University of Helsinki, 00560 Helsinki, Finland
- University of Innsbruck, Institute for Ion and Applied Physics, 6020 Innsbruck, Austria
- IONICON GesmbH, Innsbruck, Austria
| | - I. Riipinen
- Department of Environmental Science and Analytical Chemistry (ACES) and Bolin Centre for Climate Research, Stockholm University, 10691 Stockholm, Sweden
| | - J. N. Smith
- Department of Chemistry, University of California, Irvine, CA 92697, USA
| | - A. Virtanen
- University of Eastern Finland, Department of Applied Physics, P.O. Box 1627, 70211 Kuopio, Finland
| | - P. M. Winkler
- University of Vienna, Faculty of Physics, Boltzmanngasse 5, 1090 Wien, Austria
| | - N. M. Donahue
- Carnegie Mellon University Center for Atmospheric Particle Studies, 5000 Forbes Ave., Pittsburgh, PA 15213, USA
| | - V.-M. Kerminen
- Institute for Atmospheric and Earth System Research/INAR–Physics, Faculty of Science, University of Helsinki, 00560 Helsinki, Finland
| | - M. Kulmala
- Institute for Atmospheric and Earth System Research/INAR–Physics, Faculty of Science, University of Helsinki, 00560 Helsinki, Finland
- Joint International Research Laboratory of Atmospheric and Earth System Sciences, School of Atmospheric Sciences, Nanjing University, Nanjing, China
- Aerosol and Haze Laboratory, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, China
- Helsinki Institute of Physics, FI-00014 Helsinki, Finland
| | - M. Ehn
- Institute for Atmospheric and Earth System Research/INAR–Physics, Faculty of Science, University of Helsinki, 00560 Helsinki, Finland
| | - D. R. Worsnop
- Institute for Atmospheric and Earth System Research/INAR–Physics, Faculty of Science, University of Helsinki, 00560 Helsinki, Finland
- Aerodyne Research Inc., Billerica, MA 01821, USA
- University of Eastern Finland, Department of Applied Physics, P.O. Box 1627, 70211 Kuopio, Finland
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Xiong Y, Chen L, Yan C, Zhou W, Yu T, Sun Y, Cao F, Xue H, Hu Y, Chen D, Mi B, Liu G. M2 Macrophagy-derived exosomal miRNA-5106 induces bone mesenchymal stem cells towards osteoblastic fate by targeting salt-inducible kinase 2 and 3. J Nanobiotechnology 2020; 18:66. [PMID: 32345321 PMCID: PMC7189726 DOI: 10.1186/s12951-020-00622-5] [Citation(s) in RCA: 98] [Impact Index Per Article: 24.5] [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: 03/18/2020] [Accepted: 04/21/2020] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Osteoblast differentiation is a vital process for fracture healing, and exosomes are nanosized membrane vesicles that can deliver therapeutic drugs easily and safely. Macrophages participate in the regulation of various biological processes in vivo, and macrophage-derived exosomes (MD-Exos) have recently been a topic of increasing research interest. However, few study has explored the link between MD-Exos and osteoblast differentiation. Herein, we sought to identify miRNAs differentially expressed between M1 and M2 macrophage-derived exosomes, and to evaluate their roles in the context of osteoblast differentiation. RESULTS We found that microRNA-5106 (miR-5106) was significantly overexpressed in M2 macrophage-derived exosomes (M2D-Exos), while its expression was decreased in M1 macrophage-derived exosomes (M1D-Exos), and we found that this exosomal miRNA can induce bone mesenchymal stem cell (BMSC) osteogenic differentiation via directly targeting the Salt-inducible kinase 2 and 3 (SIK2 and SIK3) genes. In addition, the local injection of both a miR-5106 agonist or M2D-Exos to fracture sites was sufficient to accelerate healing in vivo. CONCLUSIONS Our study demonstrates that miR-5106 is highly enriched in M2D-Exos, and that it can be transferred to BMSCs wherein it targets SIK2 and SIK3 genes to promote osteoblast differentiation.
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Affiliation(s)
- Yuan Xiong
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Lang Chen
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Chenchen Yan
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Wu Zhou
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Tao Yu
- Department of Orthopedic Surgery, Tongji Hospital, Tongji University School of Medicine, Shanghai, 200065, China
| | - Yun Sun
- Department of Neurosurgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Faqi Cao
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Hang Xue
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yiqiang Hu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Dong Chen
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Bobin Mi
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - Guohui Liu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
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Mi B, Xiong Y, Yan C, Chen L, Xue H, Panayi AC, Hu L, Hu Y, Zhou W, Cao F, Liu G. Methyltransferase-like 3-mediated N6-methyladenosine modification of miR-7212-5p drives osteoblast differentiation and fracture healing. J Cell Mol Med 2020; 24:6385-6396. [PMID: 32307908 PMCID: PMC7294157 DOI: 10.1111/jcmm.15284] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 03/26/2020] [Accepted: 03/30/2020] [Indexed: 12/18/2022] Open
Abstract
N6-methyladenosine (m6A) modification has been reported in various diseases and implicated in increasing numbers of biological processes. However, previous studies have not focused on the role of m6A modification in fracture healing. Here, we demonstrated that m6A modifications are decreased during fracture healing and that methyltransferase-like 3 (METTL3) is the main factor involved in the abnormal changes in m6A modifications. Down-regulation of METTL3 promotes osteogenic processes both in vitro and in vivo, and this effect is recapitulated by the suppression of miR-7212-5p maturation. Further studies have shown that miR-7212-5p inhibits osteoblast differentiation in MC3T3-E1 cells by targeting FGFR3. The present study demonstrated an important role of the METTL3/miR-7212-5p/FGFR3 axis and provided new insights on m6A modification in fracture healing.
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Affiliation(s)
- Bobin Mi
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yuan Xiong
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | | | - Lang Chen
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hang Xue
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Adriana C Panayi
- Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Liangcong Hu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yiqiang Hu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wu Zhou
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Faqi Cao
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Guohui Liu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Yan C, Cui J, Huang L, Du B, Chen L, Xue G, Li S, Zhang W, Zhao L, Sun Y, Yao H, Li N, Zhao H, Feng Y, Liu S, Zhang Q, Liu D, Yuan J. Rapid and visual detection of 2019 novel coronavirus (SARS-CoV-2) by a reverse transcription loop-mediated isothermal amplification assay. Clin Microbiol Infect 2020; 26:773-779. [PMID: 32276116 PMCID: PMC7144850 DOI: 10.1016/j.cmi.2020.04.001] [Citation(s) in RCA: 352] [Impact Index Per Article: 88.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 04/01/2020] [Accepted: 04/02/2020] [Indexed: 12/14/2022]
Abstract
OBJECTIVE To evaluate a reverse transcription loop-mediated isothermal amplification (RT-LAMP) assay for detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), and compare it with RT-PCR. METHODS We designed primers specific to the orf1ab and S genes of SARS-CoV-2. Total viral RNA was extracted using the QIAamp Viral RNA Mini Kit. We optimized the RT-LAMP assay, and evaluated it for its sensitivity and specificity of detection using real-time turbidity monitoring and visual observation. RESULTS The primer sets orf1ab-4 and S-123 amplified the genes in the shortest times, the mean (±SD) times were 18 ± 1.32 min and 20 ± 1.80 min, respectively, and 63°C was the optimum reaction temperature. The sensitivities were 2 × 101 copies and 2 × 102 copies per reaction with primer sets orf1ab-4 and S-123, respectively. This assay showed no cross-reactivity with 60 other respiratory pathogens. To describe the availability of this method in clinical diagnosis, we collected 130 specimens from patients with clinically suspected SARS-CoV-2 infection. Among them, 58 were confirmed to be positive and 72 were negative by RT-LAMP. The sensitivity was 100% (95% CI 92.3%-100%), specificity 100% (95% CI 93.7%-100%). This assay detected SARS-CoV-2 in a mean (±SD) time of 26.28 ± 4.48 min and the results can be identified with visual observation. CONCLUSION These results demonstrate that we developed a rapid, simple, specific and sensitive RT-LAMP assay for SARS-CoV-2 detection among clinical samples. It will be a powerful tool for SARS-CoV-2 identification, and for monitoring suspected patients, close contacts and high-risk groups.
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Affiliation(s)
- C Yan
- Capital Institute of Paediatrics, Beijing, China
| | - J Cui
- Capital Institute of Paediatrics, Beijing, China
| | - L Huang
- Treatment and Research Centre for Infectious Diseases, The Fifth Medical Centre of PLA General Hospital, Beijing, China
| | - B Du
- Capital Institute of Paediatrics, Beijing, China
| | - L Chen
- Beijing Macro & Micro-test Bio-Tech Co., Ltd. Beijing, China
| | - G Xue
- Capital Institute of Paediatrics, Beijing, China
| | - S Li
- Capital Institute of Paediatrics, Beijing, China
| | - W Zhang
- Capital Institute of Paediatrics, Beijing, China
| | - L Zhao
- Capital Institute of Paediatrics, Beijing, China
| | - Y Sun
- Capital Institute of Paediatrics, Beijing, China
| | - H Yao
- Capital Institute of Paediatrics, Beijing, China
| | - N Li
- Capital Institute of Paediatrics, Beijing, China
| | - H Zhao
- Capital Institute of Paediatrics, Beijing, China
| | - Y Feng
- Capital Institute of Paediatrics, Beijing, China
| | - S Liu
- Capital Institute of Paediatrics, Beijing, China
| | - Q Zhang
- Capital Institute of Paediatrics, Beijing, China
| | - D Liu
- Computational Virology Group, Centre for Bacteria and Virus Resources and Bioinformation, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China.
| | - J Yuan
- Capital Institute of Paediatrics, Beijing, China.
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Liu Y, Wang L, Su Y, Brown K, Yang R, Zhang Y, Duanmu Y, Guo Z, Zhang W, Yan C, Yan D, Cheng X. CTXA hip: the effect of partial volume correction on volumetric bone mineral density data for cortical and trabecular bone. Arch Osteoporos 2020; 15:50. [PMID: 32193671 DOI: 10.1007/s11657-020-00721-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 02/25/2020] [Indexed: 02/03/2023]
Abstract
UNLABELLED This study compares the results of computed tomography X-ray absorptiometry (CTXA) hip volumetric BMD (vBMD) analyses of cortical and trabecular bone with and without partial volume correction. For cortical bone in some circumstances, corrected cortical volumes were negative and corrected vBMD was very high. For trabecular bone, the correction effects are smaller. CTXA volumetric data should be interpreted with caution. PURPOSE Previous studies have reported concerns about the reliability of CTXA hip cortical vBMD measurements generated using partial volume (PV) correction (the "default" analysis, with cortical PV correction). To date, no studies have examined the results of the alternative ("new") analysis (with trabecular PV correction). This study presents in vivo and phantom data comparing the corrected and uncorrected data for cortical and trabecular bone respectively. METHODS We used the commercial QCTPro CTXA software to analyze CT scans of 129 elderly Chinese men and women and an anthropomorphic European Proximal Femur phantom (EPFP) and accessed data for two alternative scan analyses using the database dump utility. The CTXA software gives the user two methods of performing the PV correction: (1) a default analysis in which only cortical bone results are corrected; (2) a new analysis in which only trabecular bone results are corrected. Both methods are based on a numerical recalculation of vBMD values without any change in volume of interest (VOI) placement. RESULT In vivo, the results of the two analyses for integral bone were the same while cortical and trabecular results were different. PV correction of cortical bone led to a decrease of cortical volume for all four VOIs: total hip (TH), femoral neck (FN), trochanter (TR), and intertrochanter (IT) volumes were reduced on average by 7.8 cm3, 0.9 cm3, 2.5 cm3, and 4.3 cm3 respectively. For TR, where cortex was thinnest, average corrected cortical volume was negative (- 0.4± 1.3 cm3). Corrected cortical vBMD values were much larger than uncorrected ones for TH, FN, and IT. Scatter plots of corrected cortical vBMD against cortical bone thickness showed that elevated results correlated with thinner cortices. When trabecular bone was corrected for the PV effect, trabecular volumes of TH, FN, TR, and IT were reduced on average by 7.9 cm3, 0.8 cm3, 2.6 cm3, and 4.4 cm3 respectively, while vBMD measurements were increased correspondingly. The trabecular volume and vBMD measurements of the two datasets both had highly positive correlations. For the EPFP, the PV-corrected FN data deviated from the nominal phantom value, but was closer for the TR and IT VOIs. Both corrected and uncorrected data overestimated trabecular vBMD, with the corrected results showing greater deviation from nominal values. CONCLUSION The default and new CTXA analyses for volumetric data generate different results, both for cortical and trabecular bone. For cortical bone, the uncorrected results are subject to partial volume effects but the correction method of the default analysis overcorrects the effect leading to in part unreasonable results for cortical bone volume and BMD. For trabecular bone, the correction effects are smaller. CTXA volumetric data should be interpreted with caution.
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Affiliation(s)
- Y Liu
- Department of Radiology, Beijing Jishuitan Hospital, 31 Xinjiekou East Street, Beijing, 100035, China
| | - L Wang
- Department of Radiology, Beijing Jishuitan Hospital, 31 Xinjiekou East Street, Beijing, 100035, China
| | - Y Su
- Department of Radiology, Beijing Jishuitan Hospital, 31 Xinjiekou East Street, Beijing, 100035, China
| | - K Brown
- Mindways Software, Austin, 78704, TX, USA
| | - R Yang
- Department of Radiology, Beijing Jishuitan Hospital, 31 Xinjiekou East Street, Beijing, 100035, China
| | - Y Zhang
- Department of Radiology, Beijing Jishuitan Hospital, 31 Xinjiekou East Street, Beijing, 100035, China
| | - Y Duanmu
- Department of Radiology, The First Affiliated Hospital of USTC South District, Hefei, 230036, China
| | - Z Guo
- Department of Radiology, Beijing Jishuitan Hospital, 31 Xinjiekou East Street, Beijing, 100035, China
| | - W Zhang
- Department of Radiology, Beijing Jishuitan Hospital, 31 Xinjiekou East Street, Beijing, 100035, China
| | - C Yan
- Department of Radiology, Xuanwu Hospital Capital Medical University, Beijing, 100053, China
| | - D Yan
- Department of Radiology, Beijing Jishuitan Hospital, 31 Xinjiekou East Street, Beijing, 100035, China
| | - X Cheng
- Department of Radiology, Beijing Jishuitan Hospital, 31 Xinjiekou East Street, Beijing, 100035, China.
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Xiong Y, Chen L, Yan C, Endo Y, Mi B, Liu G. The lncRNA Rhno1/miR-6979-5p/BMP2 Axis Modulates Osteoblast Differentiation. Int J Biol Sci 2020; 16:1604-1615. [PMID: 32226305 PMCID: PMC7097916 DOI: 10.7150/ijbs.38930] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Accepted: 02/26/2020] [Indexed: 12/13/2022] Open
Abstract
The roles of long non-coding RNAs (lncRNAs) and micro RNAs (miRNAs) as regulators of mRNA expression in various diseases have recently been reported. Osteoblast differentiation is the vital process which mediates bone formation and fracture healing. In present study, we found microRNA-6979-5p (miR-6979-5p) to be the most differentially expressed miRNA between normal bone and calluses of mice, and overexpression of miR-6979-5p was negatively associated with osteoblast differentiation. Through luciferase assays, we found evidence that bone morphogenetic protein 2 (BMP2) is a miR-6979-5p target gene that positively regulates osteoblast differentiation. We further identified the lncRNA Rhno1 as a competing endogenous RNA (ceRNA) of miR-6979-5p, and we verified that it was able to influence osteoblast differentiation both in vitro and in vivo. In summary, our data indicates that the lncRNA Rhno1/miR-6979-5p/BMP2 axis is a significant regulatory mechanism controlling osteoblast differentiation, and it may thus offer a novel therapeutic strategy for fracture healing.
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Affiliation(s)
- Yuan Xiong
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Lang Chen
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Chenchen Yan
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yori Endo
- Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, 02215, USA
| | - Bobin Mi
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Guohui Liu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
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Xiong Y, Cao F, Chen L, Yan C, Zhou W, Chen Y, Endo Y, Leng X, Mi B, Liu G. Identification of key microRNAs and target genes for the diagnosis of bone nonunion. Mol Med Rep 2020; 21:1921-1933. [PMID: 32319614 PMCID: PMC7057810 DOI: 10.3892/mmr.2020.10996] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 12/12/2019] [Indexed: 12/11/2022] Open
Abstract
A number of recent studies have highlighted the causes of bone nonunion (BN), however, the rate of BN incidence continues to rise and available therapeutic options to treat this condition remain limited. Thus, to prevent disease progression and improve patient prognosis, it is vital that BN, or the risk thereof, be accurately identified in a timely manner. In the present study, bioinformatics analyses were used to screen for the differentially expressed genes (DEGs) and differentially expressed miRNAs (DEMs) between patients with BN and those with bone union, using data from the Gene Expression Omnibus database. Furthermore, clinical samples were collected and analyzed by reverse transcription‑quantitative PCR and western blotting. In vitro and in vivo experiments were carried out to confirm the relationship between BN and the DEGs of interest, in addition to being used to explore the underlying molecular mechanism of BN. Functional enrichment analysis of the downregulated DEGs revealed them to be enriched for genes associated with 'ECM‑receptor interactions', 'focal adhesion', 'and the calcium signaling pathway'. When comparing DEM target genes with these DEGs, nine DEGs were identified as putative DEM targets, where hsa‑microRNA (miR)‑1225‑5p‑CCNL2, hsa‑miR‑339‑5p‑PRCP, and hsa‑miR‑193a‑3p‑mitogen‑activated protein kinase 10 (MAPK10) were the only three pairs which were associated with decreased gene expression levels. Furthermore, hsa‑miR‑193a‑3p was demonstrated to induce BN by targeting MAPK10. Collectively, the results of the present study suggest that hsa‑miR‑193a‑3p may be a viable biomarker of BN.
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Affiliation(s)
- Yuan Xiong
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
| | - Faqi Cao
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
| | - Lang Chen
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
| | - Chenchen Yan
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
| | - Wu Zhou
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
| | - Yanyan Chen
- Department of Pathology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, P.R. China
| | - Yori Endo
- Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02215, USA
| | - Xingzhu Leng
- Department of Biomedical Sciences, UMC Utrecht, Utrecht University, Utrecht, 3508 GA, The Netherlands
| | - Bobin Mi
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
| | - Guohui Liu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
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Chen L, Xiong Y, Yan C, Zhou W, Endo Y, Xue H, Hu Y, Hu L, Leng X, Liu J, Lin Z, Mi B, Liu G. LncRNA KCNQ1OT1 accelerates fracture healing via modulating miR-701-3p/FGFR3 axis. FASEB J 2020; 34:5208-5222. [PMID: 32060985 DOI: 10.1096/fj.201901864rr] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 01/13/2020] [Accepted: 02/02/2020] [Indexed: 12/14/2022]
Abstract
Emerging evidence highlights the role of the long noncoding RNA (lncRNA) KCNQ1OT1 in fracture healing. Osteoblast proliferation, migration, and survival are pivotal during this process. In this study, we aimed to improve our understanding of the regulatory role of lncRNA KCNQ1OT1 during osteoblast proliferation, migration, and survival. We searched the gene expression omnibus databases and LncBase Experimental V.2 to identify key microRNAs (miRNAs) targets of KCNQ1OT1. MiR-701-3p was selected as a differentially expressed miRNA and RNA immunoprecipitation assays were performed to verify its interaction with KCNQ1OT1. Fibroblast growth factor receptor 3 (FGFR3) was also identified as a target of miR-701-3p. We further identified KCNQ1OT1 as a competing endogenous RNA of miR-701-3p that could influence osteoblast proliferation, migration, and apoptosis in vitro and in vivo. Taken together, our results indicate that the KCNQ1OT1/miR-701-3p/FGFR3 axis is an important regulator of osteoblast proliferation, migration, and apoptosis, and provide a new therapeutic avenue for fracture healing.
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Affiliation(s)
- Lang Chen
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yuan Xiong
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chenchen Yan
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wu Zhou
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yori Endo
- Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Hang Xue
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yiqiang Hu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Liangcong Hu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xingzhu Leng
- Department of Biomedical Sciences, UMC Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Jing Liu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ze Lin
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Bobin Mi
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Guohui Liu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Sah BK, Li J, Yan C, Li C, Yan M, Zhu ZG. Anastomosis for distal gastrectomy in Chinese patients: uncut roux-Y or roux-Y? BMC Surg 2020; 20:7. [PMID: 31918683 PMCID: PMC6953135 DOI: 10.1186/s12893-019-0672-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 12/25/2019] [Indexed: 02/03/2023] Open
Abstract
Background An appropriate method of anastomosis is crucial for gastric cancer patients who require gastrojejunal anastomosis. Surgeons have proposed different types of modified gastrojejunostomies in the last two decades. We focused on two types of standard anastomosis, i.e., Uncut Roux-Y and Roux-Y gastrojejunostomies, and compared the differences in immediate postoperative complications between the two types. Methods This is a retrospective study on 236 gastric cancer patients who underwent curative distal gastrectomy with gastrojejunal Roux-Y or Uncut Roux-Y anastomosis for six consecutive years. Immediate postoperative complications were compared between the two groups. The authors discussed the causes of the significant complications and their management. Results There was no difference in demographics between the two groups (92 Roux-y Versus 144 Uncut Roux-y). The overall complication rate was 20.8% with 1.4% anastomotic leakage in the Uncut Roux-Y group versus 33.7% with 7.6% anastomotic failures in the Roux-Y group (p < 0.05). More abdominal infections occurred in the Roux-Y anastomosis group compared with the Uncut Roux-Y anastomosis group (p < 0.05). Duration of postoperative stay was significantly longer in patients with Roux-y anastomosis group (p < 0.05). Conclusions Considering the surgical simplicity and postoperative complications, the Uncut Roux-Y is a better choice for anastomosis in patients with gastric cancer undergoing gastrojejunostomy. A well-designed large cohort in a multi-centre randomized controlled trial is necessary to support these findings and compare other aspects.
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Affiliation(s)
- B K Sah
- Department of General Surgery, Gastrointestinal Surgery Unit, Ruijin Hospital Shanghai Jiao Tong University School of Medicine, 197 Ruijin Er Road, Shanghai, 200025, China.
| | - J Li
- Clinical Research Centre, Ruijin Hospital Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - C Yan
- Department of General Surgery, Gastrointestinal Surgery Unit, Ruijin Hospital Shanghai Jiao Tong University School of Medicine, 197 Ruijin Er Road, Shanghai, 200025, China.
| | - C Li
- Department of General Surgery, Gastrointestinal Surgery Unit, Ruijin Hospital Shanghai Jiao Tong University School of Medicine, 197 Ruijin Er Road, Shanghai, 200025, China
| | - M Yan
- Department of General Surgery, Gastrointestinal Surgery Unit, Ruijin Hospital Shanghai Jiao Tong University School of Medicine, 197 Ruijin Er Road, Shanghai, 200025, China
| | - Z G Zhu
- Department of General Surgery, Gastrointestinal Surgery Unit, Ruijin Hospital Shanghai Jiao Tong University School of Medicine, 197 Ruijin Er Road, Shanghai, 200025, China
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Xiong Y, Chen L, Yan C, Zhou W, Endo Y, Liu J, Hu L, Hu Y, Mi B, Liu G. Circulating Exosomal miR-20b-5p Inhibition Restores Wnt9b Signaling and Reverses Diabetes-Associated Impaired Wound Healing. Small 2020; 16:e1904044. [PMID: 31867895 DOI: 10.1002/smll.201904044] [Citation(s) in RCA: 118] [Impact Index Per Article: 29.5] [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: 07/25/2019] [Revised: 11/19/2019] [Indexed: 06/10/2023]
Abstract
At present, developing therapeutic strategies to improve wound healing in individuals with diabetes remains challenging. Exosomes represent a promising nanomaterial from which microRNAs (miRNAs) can be isolated. These miRNAs have the potential to exert therapeutic effects, and thus, determining the potential therapeutic contributions of specific miRNAs circulating in exosomes is of great importance. In the present study, circulating exosomal miRNAs are identified in diabetic patients and assessed for their roles in the context of diabetic wound healing. A significant upregulation of miR-20b-5p is observed in exosomes isolated from patients with type 2 diabetes mellitus (T2DM), and this miRNA is able to suppress human umbilical vein endothelial cell angiogenesis via regulation of Wnt9b/β-catenin signaling. It is found that the application of either miR-20b-5p or diabetic exosomes to wound sites is sufficient to slow wound healing and angiogenesis. In diabetic mice, it is found that knocking out miR-20b-5p significantly enhances wound healing and promotes wound angiogenesis. Together, these findings thus provide strong evidence that miR-20b-5p is highly enriched in exosomes from patients with T2DM and can be transferred to cells of the vascular endothelium, where it targets Wnt9b signaling to negatively regulate cell functionality and angiogenesis.
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Affiliation(s)
- Yuan Xiong
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, P. R. China
| | - Lang Chen
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, P. R. China
| | - Chenchen Yan
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, P. R. China
| | - Wu Zhou
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, P. R. China
| | - Yori Endo
- Department of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02152, USA
| | - Jing Liu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, P. R. China
| | - Liangcong Hu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, P. R. China
| | - Yiqiang Hu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, P. R. China
| | - Bobin Mi
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, P. R. China
| | - Guohui Liu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, P. R. China
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Chen J, Liu J, Yan C, Zhang C, Pan W, Zhang W, Lu Y, Chen L, Chen Y. Sarcodon aspratus polysaccharides ameliorated obesity-induced metabolic disorders and modulated gut microbiota dysbiosis in mice fed a high-fat diet. Food Funct 2020; 11:2588-2602. [DOI: 10.1039/c9fo00963a] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The polysaccharides isolated from the fruit body of S. aspratus (SATPs) might be a potential health supplement or prebiotic in the prevention of obesity and associated metabolic disorders.
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Affiliation(s)
- Juan Chen
- School of Life Sciences
- Anhui University
- Hefei
- PR China
| | - Jiaojiao Liu
- School of Life Sciences
- Anhui University
- Hefei
- PR China
| | - Chenchen Yan
- School of Life Sciences
- Anhui University
- Hefei
- PR China
| | - Chan Zhang
- School of Life Sciences
- Anhui University
- Hefei
- PR China
| | - Wenjuan Pan
- School of Life Sciences
- Anhui University
- Hefei
- PR China
| | - Wenna Zhang
- School of Life Sciences
- Anhui University
- Hefei
- PR China
| | - Yongming Lu
- School of Life Sciences
- Anhui University
- Hefei
- PR China
| | - Lei Chen
- School of Life Sciences
- Anhui University
- Hefei
- PR China
| | - Yan Chen
- School of Life Sciences
- Anhui University
- Hefei
- PR China
- Key Laboratory of Anhui Ecological Engineering and Biotechnology
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Xue H, Hu L, Xiong Y, Zhu X, Wei C, Cao F, Zhou W, Sun Y, Endo Y, Liu M, Liu Y, Liu J, Abududilibaier A, Chen L, Yan C, Mi B, Liu G. Quaternized chitosan-Matrigel-polyacrylamide hydrogels as wound dressing for wound repair and regeneration. Carbohydr Polym 2019; 226:115302. [DOI: 10.1016/j.carbpol.2019.115302] [Citation(s) in RCA: 84] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 07/17/2019] [Accepted: 09/05/2019] [Indexed: 10/26/2022]
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Kendler DL, Bone HG, Massari F, Gielen E, Palacios S, Maddox J, Yan C, Yue S, Dinavahi RV, Libanati C, Grauer A. Bone mineral density gains with a second 12-month course of romosozumab therapy following placebo or denosumab. Osteoporos Int 2019; 30:2437-2448. [PMID: 31628490 PMCID: PMC6877701 DOI: 10.1007/s00198-019-05146-9] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Accepted: 08/23/2019] [Indexed: 11/02/2022]
Abstract
UNLABELLED Romosozumab is a therapy that stimulates bone formation and reduces bone resorption. In this study of postmenopausal women with low BMD, a second course of romosozumab following a period off treatment or on denosumab increased or maintained BMD, respectively, and was well tolerated, providing insight into treatment sequence options. INTRODUCTION In patients with high fracture risk, therapies that stimulate bone formation provide rapid BMD gains; currently available agents, parathyroid hormone receptor agonists, are limited to a 2-year lifetime exposure and generally used for a single treatment course. However, for long-term osteoporosis management, a second treatment course may be appropriate. Romosozumab, a therapy with the dual effect of increasing bone formation and decreasing bone resorption, reduces fracture risk within 12 months. Here, we report efficacy and safety of a second romosozumab course. METHODS In this phase 2, dose-finding study, postmenopausal women with low bone mass (T-score ≤ - 2.0 and ≥ - 3.5) received romosozumab or placebo (month 0-24) followed by placebo or denosumab (month 24-36); participants then received a year of romosozumab (month 36-48). RESULTS Of 167 participants who entered the month 36-48 period, 35 had been initially randomized to romosozumab 210 mg monthly. In participants who received romosozumab 210 mg monthly followed by placebo, a second romosozumab course (n = 19) increased BMD by amounts similar to their initial treatment (month 0-12) at the lumbar spine (12.4%; 12.0%, respectively) and total hip (6.0%; 5.5%, respectively). Following denosumab, a second romosozumab course (n = 16) increased BMD at the lumbar spine (2.3%) and maintained BMD at the total hip. Safety profiles were similar between first and second romosozumab courses. CONCLUSIONS After 12 months off-treatment, a second romosozumab course again led to rapid and large BMD gains. Following denosumab, BMD gains with romosozumab were smaller than with initial treatment. No new safety findings were observed during the second course.
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Affiliation(s)
- D L Kendler
- Department of Medicine, University of British Columbia, 150-943 West Broadway, Vancouver, BC, V5Z 4E1, Canada.
| | - H G Bone
- Michigan Bone and Mineral Clinic, Detroit, MI, USA
| | - F Massari
- Instituto de Investigaciones Metabólicas, Buenos Aires, Argentina
| | | | | | - J Maddox
- Amgen Inc., Thousand Oaks, CA, USA
| | - C Yan
- Amgen Ltd., Cambridge, UK
- Cambridge Statistics Ltd, Cambridge, UK
| | - S Yue
- Amgen Inc., Thousand Oaks, CA, USA
- Atara Biotherapeutics, Westlake Village, CA, USA
| | | | | | - A Grauer
- Amgen Inc., Thousand Oaks, CA, USA
- Corcept Therapeutics, Menlo Park, CA, USA
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Xiong Y, Yan C, Chen L, Endo Y, Sun Y, Zhou W, Hu Y, Hu L, Chen D, Xue H, Mi B, Liu G. IL-10 induces MC3T3-E1 cells differentiation towards osteoblastic fate in murine model. J Cell Mol Med 2019; 24:1076-1086. [PMID: 31755174 PMCID: PMC6933380 DOI: 10.1111/jcmm.14832] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [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: 09/07/2019] [Revised: 10/04/2019] [Accepted: 10/28/2019] [Indexed: 12/22/2022] Open
Abstract
Interleukin‐10 (IL‐10) displays well‐documented anti‐inflammatory effects, but its effects on osteoblast differentiation have not been investigated. In this study, we found IL‐10 negatively regulates microRNA‐7025‐5p (miR‐7025‐5p), the down‐regulation of which enhances osteoblast differentiation. Furthermore, through luciferase reporter assays, we found evidence that insulin‐like growth factor 1 receptor (IGF1R) is a miR‐7025‐5p target gene that positively regulates osteoblast differentiation. In vivo studies indicated that the pre‐injection of IL‐10 leads to increased bone formation, while agomiR‐7025‐5p injection delays fracture healing. Taken together, these results indicate that IL‐10 induces osteoblast differentiation via regulation of the miR‐7025‐5p/IGF1R axis. IL‐10 therefore represents a promising therapeutic strategy to promote fracture healing.
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Affiliation(s)
- Yuan Xiong
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chenchen Yan
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lang Chen
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yori Endo
- Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Yun Sun
- Department of Neurosurgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wu Zhou
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yiqiang Hu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Liangcong Hu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Dong Chen
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hang Xue
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Bobin Mi
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Guohui Liu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Yan C, Wan L, Pan X, Li H, Li S, Song H. 4284The combined use of radiofrequency-ablation and balloon-dilation (CURB) in the creation of a stable inter-atrial communication: first-in-man use for patients with severe pulmonary arterial hypertension. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0141] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Recent preclinical research has suggested that combined use of radiofrequency-ablation and balloon-dilation (CURB) had the potential to create a stable inter-atrial communication. However, the related clinical data is still absent.
Purpose
This study describes the first-in-man use of CURB in the patients with severe pulmonary arterial hypertension (PAH).
Methods
Under the guidance of fluoroscopy and intra-cardiac echocardiography, CURB was attempted in 3 patients with severe PAH (age: 35.0±12.1 years, one idiopathic PAH and two PAH related to repaired congenital heart disease). With the aid of 3D location system, fossae ovalis was ablated with radiofrequency. Then the graded balloon-dilation was performed after transseptal puncture, and radiofrequency-ablation was repeated around the rim of fenestration created with balloon-dilation. The exercise capacity and fenestration-size were followed up.
Results
CURB was performed successfully in all 3 patients, and pulmonary vascular resistance was 30.3±10.9 Wood units. The fenestration size was 5.0±1.0 mm (range: 4–6 mm), and systemic arterial oxygen saturation decreased by 4.7±0.6% (range: 4–5%). World Health Organization functional class increased by 1.6±0.5 (P<0.001) and cardiac index increased by 0.58±0.34 L/min/m2 (P<0.001). In addition, exercise capacity improved significantly (+63.7 meters, P<0.001). Follow-up (6.0±1.0 months; range: 5–7 months) showed that all fenestrations were stable (P=0.808), and no complication occurred.
Figure 1. The combined use of radiofrequency-ablation and balloon-dilation (CURB) was performed in the patient with severe PAH. Left figures showed the procedure of CURB. Middle figures showed the created fenestration with MSCT, and the morphology and size of fenestration was provided in the right-inferior panel. In addition, the sizes of right atrium and ventricle were alleviated with increase of left atrium. Right figures indicated that the fenestration-size was stable during follow-up (one week, one month and six months, respectively).
Conclusions
In patients with severe PAH, CURB is feasible and effective to create a stable inter-atrial communication. Further research was required to evaluate the long-term result of this novel approach.
ClinicalTrials.gov ID: NCT03554330.
Acknowledgement/Funding
National Natural Science Foundation of China (81670283) and Beijing Natural Science Foundation (7162160)
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Affiliation(s)
- C Yan
- Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Department of Structural Heart Disease, Beijing, China
| | - L Wan
- Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Department of Structural Heart Disease, Beijing, China
| | - X Pan
- Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Department of Structural Heart Disease, Beijing, China
| | - H Li
- Tong Ren Hospital- Capital Medical University, Beijing, China
| | - S Li
- Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Department of Structural Heart Disease, Beijing, China
| | - H Song
- Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Department of Structural Heart Disease, Beijing, China
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Ji K, Yan C. P.59The mutations in mtDNA encoded NADH dehydrogenase subunit genes as common causes of MELAS. Neuromuscul Disord 2019. [DOI: 10.1016/j.nmd.2019.06.088] [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: 11/27/2022]
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Shi HP, Wang ZQ, Fan ZY, Zang MD, Pan JM, Dai QQ, Zheng YN, Zhu ZL, Sah RD, Liu WT, Yang ZY, Feng RH, Yao XX, Chen MM, Yan C, Yan M, Zhu ZG, Li C. [Analysis and comparison of the clinical features and prognosis between extra - gastrointestinal stromal tumors and duodenal gastrointestinal stromal tumors]. Zhonghua Wei Chang Wai Ke Za Zhi 2019; 22:856-860. [PMID: 31550825 DOI: 10.3760/cma.j.issn.1671-0274.2019.09.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the differences of clinicopathological features, diagnosis, treatment and prognosis between patients with extra-gastrointestinal stromal tumors (EGIST) and duodenal gastrointestinal stromal tumors (DGIST). Methods: A retrospective case - control study was performed. Case inclusion criteria: (1) tumor confirmed by histology and pathology; (2) primary tumor locating in the extra - gastrointestinal tract or duodenum; (3) without other synchronous tumors; (4) complete clinical and pathological data. Clinical data of 20 EGIST patients and 32 DGIST patients from March 2011 to September 2016 at Department of Gastrointestinal Surgery, Ruijin Hospital, Shanghai Jiaotong University School of Medicine were retrospectively collected and analyzed. The observational parameters included clinicopathological characteristics, treatment and prognosis conditions. Continuous data of abnormal distribution were expressed as median (range) and compared using the Mann-Whitney U-test. Survival curves were drawn by the Kaplan-Meier method and compared with the Log-rank test. Results: Of the 20 EGIST patients, 8 were males and 12 were females with age of 61.0 (30.0 to 86.0) years and of the 32 DGIST patients, 12 were males and 20 were females with age of 55.5 (27.0 to 70.0) years. Compared with DGIST patients, EGIST patients were older (U=188.000, P=0.012], had larger tumor size [10.0 (3.0 to 29.0) cm vs. 4.0 (1.5 to 10.0) cm, U=98.500, P<0.001] and higher ratio of high risk classification [85.0% (17/20) vs. 12.5% (4/32), χ(2)=26.870, P<0.001]. Among the 20 EGIST patients, 5 were diagnosed with distal metastasis and received imatinib (400 mg/d), and the other 15 patients underwent radical resection who were included in survival analysis. All the 32 DGIST patients underwent radical resection. The median follow-up of whole group was 43 (14 to 76) months. The 3-year recurrence/metastasis-free survival rate of 15 cases undergoing radical resection in the EGIST group was 85.6%, which was lower than that of the DGIST group (88.6%), and the difference was not statistically significant (P=0.745). There was no significant difference in the 3-year overall survival rate between the EGIST group (92.9%) and the DGIST group (100%) (P=0.271). Conclusions: As compared to DGIST, EGIST mostly occurs in those with older age, larger tumor size and higher risk grade. The prognosis of EGIST patients after radical resection is similar to that of DGIST patients.
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Affiliation(s)
- H P Shi
- Department of Gastrointestinal Surgery, Shanghai Key Laboratory of Gastric Neoplasms, Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200025, China
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79
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Ma JJ, Zang L, Yang ZY, Xie BW, Hong XZ, Cai ZH, Zhang LY, Yan C, Zhu ZG, Zheng MH. [Laparoscopic peritoneal dialysis catheter implantation in peritoneal chemotherapy for gastric cancer with peritoneal metastasis]. Zhonghua Wei Chang Wai Ke Za Zhi 2019; 22:774-780. [PMID: 31422617 DOI: 10.3760/cma.j.issn.1671-0274.2019.08.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the clinical value of laparoscopic peritoneal dialysis catheter implantation in peritoneal chemotherapy for gastric cancer with peritoneal metastasis. Methods: From January 2019 to June 2019, the clinical data of 6 patients diagnosed as gastric cancer with peritoneal metastasis were retrospectively analyzed in the Gastrointestinal Surgery Department of Ruijin Hospital Affiliated to Shanghai Jiaotong University School of Medicine. Five were male and 1 was female. The median age was 69.5 (28-77) years. The median body mass index (BMI) was 22.8 (19.6-23.5). All procedures were performed under general anesthesia with endotracheal intubation. The patient's body position and facility layout in the operating room were consistent with those of laparoscopic gastrectomy. The operator's position: the main surgeon was located on the right side of the patient, the first assistant stood on the left side of the patient, and the scopist stood between the patient's legs. Surgical procedure: (1) trocar location: three abdominal trocars was adopted, with one 12 mm umbilical port for the 30° laparoscope (point A). Location of the other two trocars was dependent on the procedure of exploration or biopsy as well as the two polyester cuff position of the peritoneal dialysis catheter: Usually one 5 mm port in the anterior midline 5 cm inferior to the umbilicus point was selected as point B to ensure that the distal end of the catheter could reach the Douglas pouch. The other 5 mm port was located in the right lower quadrant lateral to the umbilicus to establish the subcutaneous tunnel tract, and the proximal cuff was situated 2 cm away from the desired exit site (point C).(2) exploration of the abdominal cavity: a 30° laparoscope was inserted from 12 mm trocar below the umbilicus to explore the entire peritoneal cavity. The uterus and adnexa should be explored additionally for women. Once peritoneal metastasis was investigated and identified, primary laparoscopic peritoneal dialysis catheter implantation was performed so as to facilitate subsequent peritoneal chemotherapy. Ascites were collected for cytology in patients with ascites. (3) peritoneal dialysis catheter placement: the peritoneal dialysis catheter was introduced into the abdominal cavity from point A. Under the direct vision of laparoscopy, 2-0 absorbable ligature was reserved at the expected fixation point of the proximal cuff (point B) for the final knot closure. Non-traumatic graspers were used to pull the distal cuff of peritoneal dialysis catheter out of the abdominal cavity through point B. The 5-mm trocar was removed simultaneously, and the distal cuff was fixed between bilateral rectus sheaths at the anterior midline port site preperitoneally. To prevent subsequent ascites and chemotherapy fluid extravasation, the reserved crocheted wire was knotted. From point C the subcutaneous tunnel tract was created before the peritoneal steath towards the port site lateral to the umbilicus. Satisfactory catheter irrigation and outflow were then confirmed. Chemotherapy regimen after peritoneal dialysis catheterization: all patients began intraperitoneal chemotherapy on the second day after surgery. On the 1st and 8th day of each 3-weeks cycle, paclitaxel (20 mg/m(2)) was administered through peritoneal dialysis catheter, and paclitaxel (50 mg/m(2)) was injected intravenously. Meanwhile, S-1 was orally administered twice daily at a dose of 80 mg·m(-2)·d(-1) for 14 consecutive days followed by 7-days rest. To observe the patients' intraoperative and postoperative conditions. Results: All the procedures were performed successfully without intraoperative complications or conversion to laparotomy. No 30 day postoperative complications were observed. The median operative time was 33.5 (23-38) min. The median time to first flatus was 1(1-2) days, and the median postoperative hospital stay was 3 (3-4) days, without short-term complications within 30 days postoperatively. The last follow-up was up to July 10, 2019, and the patients were followed for 4(1-6) months. No ascites extravasation was observed and no death occurred in the 6 patients. There was no catheter obstruction or peritoneal fluid extravasation during and after chemotherapy. Conclusion: Laparoscopic peritoneal dialysis catheter implantation was safe and feasible for patients with peritoneal metastasis of gastric cancer. The abdominal exploration, tumor staging and the abdominal chemotherapy device implantation can be completed simultaneously, which could simplify the surgical approach, improve the quality of life for patients and further propose a new direction for the development of abdominal chemotherapy.
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Affiliation(s)
- J J Ma
- Department of General Surgery, Rui-Jin Hospital, Shanghai Jiao-Tong University School of Medicine, Shanghai Minimal Invasive Surgery Center, Shanghai 200025, China
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Xiong Y, Xue H, Zhou W, Sun Y, Liu Y, Wu Q, Liu J, Hu L, Panayi AC, Chen L, Yan C, Mi B, Liu G. Shock-wave therapy versus corticosteroid injection on lateral epicondylitis: a meta-analysis of randomized controlled trials. PHYSICIAN SPORTSMED 2019; 47:284-289. [PMID: 30951399 DOI: 10.1080/00913847.2019.1599587] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Background: Shock-wave (SW) therapy has been widely promoted and proven to be effective in ameliorating symptoms of lateral epicondylitis (LE) during recent years. Corticosteroid (CS) injection is another common treatment of LE, and several researches have documented its significant effect in the treatment of LE. Despite this, few studies have focused on comparing the use of SW and CS in the treatment of LE. The aim of this meta-analysis is to assess whether SW is superior to CS in managing LE, both in terms of ameliorating pain and improving functionality. Methods: A systematic search of the literature was conducted to identify relevant articles that were published in Pubmed, Medline, Embase, the Cochrane Library, SpringerLink, Clinical Trials.gov and OVID from the databases' inception to December 2018. All studies comparing the efficacy of SW and CS in terms of pain levels and functionality improvement were included. Data on the two primary outcomes were collected and analyzed using the Review Manager 5.3. Results: Four studies were included in the current meta-analysis. A significant difference in VAS score (SMD = 1.13, Cl 0.72-1.55 P < 0.00001, I2 = 0) was noted between the SW group and the CS group. Furthermore, Significant difference was also seen in the term of grip strength (including HGS and GSS scoring system) (SMD = -1.42, Cl -1.85--0.98 P < 0.00001, I2 = 0). Conclusions: In light of the better improvement in the terms of VAS and grip strength with follow-up more than 12 weeks, we assume that SW may be a superior alternative for the treatment of LE.
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Affiliation(s)
- Yuan Xiong
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan , China
| | - Hang Xue
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan , China
| | - Wu Zhou
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan , China
| | - Yun Sun
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan , China
| | - Yi Liu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan , China
| | - Qipeng Wu
- Department of Orthopedics, Pu'ai Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan , China
| | - Jing Liu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan , China
| | - Liangcong Hu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan , China
| | - Adriana C Panayi
- The division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School , Boston , MA , USA
| | - Lang Chen
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan , China
| | - Chenchen Yan
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan , China
| | - Bobin Mi
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan , China
| | - Guohui Liu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan , China
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Sun Y, Xiong Y, Yan C, Chen L, Chen D, Mi B, Liu G. Downregulation of microRNA-16-5p accelerates fracture healing by promoting proliferation and inhibiting apoptosis of osteoblasts in patients with traumatic brain injury. Am J Transl Res 2019; 11:4746-4760. [PMID: 31497196 PMCID: PMC6731405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Accepted: 07/21/2019] [Indexed: 06/10/2023]
Abstract
Patients who suffered a traumatic brain injury (TBI) show a faster fracture healing than patients with isolated fractures. Prior studies have suggested that this process may be accelerated through the inhibition of key microRNAs. In this study, we aimed to explore the mechanisms underlying this phenomenon, with a special focus on miR-16-5p, which is markedly decreased in patients with TBI. In vitro, miR-16-5p over-expression significantly inhibited cell proliferation in MC3T3-E1 cells transfected with agomiR-16-5p. Flow cytometry analysis further demonstrated that the overexpression of miR-16-5p induced cell cycle G1/S phase arrest and apoptosis. Moreover, target prediction and luciferase reporter assay demonstrated that miR-16-5p could negatively regulate Bcl-2 and Cyclin-D1 expression. Meanwhile, Bcl-2 and Cyclin-D1 were up-regulated after osteogenic differentiation while the down-regulation of endogenous Bcl-2 and Cyclin-D suppressed the osteogenic differentiation of MC3T3-E1 cells. In vivo, PBS, agomiR-16-5p and antagomiR-16-5p were injected into fracture sites to assess any improvements in fracture healing, which further confirmed the negative effect of miR-16-5p on fracture healing. Together, these results demonstrate miR-16-5p downregulation may accelerate fracture healing by enhancing the proliferation and inhibiting the apoptosis of osteoblasts in patients with both fractures and TBI. These phenomena may be exploited in the treatment of fractures.
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Affiliation(s)
- Yun Sun
- Department of Neurosurgery, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430022, China
| | - Yuan Xiong
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430022, China
| | - Chenchen Yan
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430022, China
| | - Lang Chen
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430022, China
| | - Dong Chen
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430022, China
| | - Bobin Mi
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430022, China
| | - Guohui Liu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430022, China
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Yan C, Xiong Y, Chen L, Endo Y, Hu L, Liu M, Liu J, Xue H, Abududilibaier A, Mi B, Liu G. A comparative study of the efficacy of ultrasonics and extracorporeal shock wave in the treatment of tennis elbow: a meta-analysis of randomized controlled trials. J Orthop Surg Res 2019; 14:248. [PMID: 31387611 PMCID: PMC6683364 DOI: 10.1186/s13018-019-1290-y] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Accepted: 07/24/2019] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Tennis elbow or lateral epicondylitis is a common source of pain among craftsmen. Although it cannot be completely resolved, extracorporeal shock wave therapy (ESWT) and ultrasonics (US) have been found to be effective for tennis elbow as highlighted in previously published randomized controlled trials (RCTs) and reviews. However, the efficacy of these two therapies in treating tennis elbow is unknown. This meta-analysis compares the effectiveness of ESWT and US in relieving pain and restoring the functions of tennis elbow following tendinopathy. METHODS RCTs published in the PubMed, Embase, Cochrane Library, and SpringerLink databases comparing ESWT and US in treating tennis elbow were identified by a software and manual search. The risk of bias and clinical relevance of the included studies were assessed. Publication bias was explored using funnel plot and statistical tests (Egger's test and Begg's test). The major outcomes of the studies were analyzed using the Review Manager 5.3. RESULTS Five RCTs comprising five patients were included in the present meta-analysis. The results revealed a significantly lower VAS score of pain in the ESWT group (1 month: MD = 4.47, p = 0.0001; 3 months: MD = 20.32, p < 0.00001; and 6 months: MD = 4.32, p < 0.0001) compared to US. Besides, the grip strength was markedly higher 3 months after the intervention in ESWT (MD = 8.87, p < 0.00001) than in the US group. Although no significant difference was observed in the scores of the elbow function after 3 months of treatment (SMD = 1.51, p = 0.13), the subjective scores of elbow functions were found to be better in the ESWT group (SMD = 3.34; p = 0.0008) compared to the US group. CONCLUSIONS Although there was no significant difference in the elbow function evaluation scores between ESWT and US, the superiority of the ESWT group in the VAS of pain (both at 1 month, 3 months, and 6 months follow-ups) raised grip strength in ESWT group and the scores for subjective evaluation of efficacy indicated that ESWT offers more effective therapy for lateral epicondylitis than US therapy.
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Affiliation(s)
- Chenchen Yan
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Rd. 1277#, Wuhan, 430022, Hubei, China
| | - Yuan Xiong
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Rd. 1277#, Wuhan, 430022, Hubei, China
| | - Lang Chen
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Rd. 1277#, Wuhan, 430022, Hubei, China
| | - Yori Endo
- Department of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, 02152, USA
| | - Liangcong Hu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Rd. 1277#, Wuhan, 430022, Hubei, China
| | - Mengfei Liu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Rd. 1277#, Wuhan, 430022, Hubei, China
| | - Jing Liu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Rd. 1277#, Wuhan, 430022, Hubei, China
| | - Hang Xue
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Rd. 1277#, Wuhan, 430022, Hubei, China
| | - Abudula Abududilibaier
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Rd. 1277#, Wuhan, 430022, Hubei, China
| | - Bobin Mi
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Rd. 1277#, Wuhan, 430022, Hubei, China.
| | - Guohui Liu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Rd. 1277#, Wuhan, 430022, Hubei, China.
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Li Y, Yan C, Weng S, Shi Z, Sun H, Chen J, Xu X, Ye R, Hong J. Texture analysis of multi-phase MRI images to detect expression of Ki67 in hepatocellular carcinoma. Clin Radiol 2019; 74:813.e19-813.e27. [PMID: 31362887 DOI: 10.1016/j.crad.2019.06.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 06/24/2019] [Indexed: 02/07/2023]
Abstract
AIM To determine whether texture analysis of preoperative magnetic resonance imaging (MRI) images could be used to detect Ki67 expression, a widely used cell proliferation marker in hepatocellular carcinoma (HCC). MATERIALS AND METHODS In total, 83 patients were included, 25 with low Ki67 (Ki67 ≤10%) HCC expression and 58 with high Ki67 (Ki67 ≥10%) HCC expression as demonstrated by retrospective surgical evaluation. All patients were examined using a 3 T MRI unit with one standard protocol. The region of interest was drawn manually by one radiologist. Texture analysis included histogram, co-occurrence matrix, run-length matrix, gradient, auto-regressive model, and wavelet transform features as calculated by MaZda (version 4.6; quantitative texture analysis software). The features reduced by the Fisher, probability of classification error, and average correlation coefficient (POE+ACC), mutual information were used to select the features that predicted Ki67 proliferation status with highest accuracy and then using the B11 program for data analysis and classification. RESULTS The misclassification rate of the principal component analysis (PCA) in the hepatobiliary phase (HBP), T2-weighted imaging (T2WI), arterial phase (AP), and portal vein phase (PVP) was 36/83 (43.37%), 35/82 (42.68%), 40/83 (48.19%), and 34/83 (40.96%), respectively. The misclassification of the linear discriminant analysis in HBP, T2WI, AP, and PVP phase was 13/83 (15.66%), 21/82 (25.61%), 9/83 (10.84%), and 8/83 (9.64%), respectively. The misclassification of the nonlinear discriminant analysis in HBP, T2WI, AP, and PVP phase was 7/83 (8.43%), 6/82 (7.32%), 5/83 (6.02%), and 7/83 (8.43%), respectively. CONCLUSIONS Texture analysis of HBP, AP, and PVP were helpful for predicting Ki67 expression and may provide a less-invasive method to investigate critical histopathology markers for HCC.
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Affiliation(s)
- Y Li
- Department of Radiology, First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, 350005, China.
| | - C Yan
- Department of Radiology, First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, 350005, China
| | - S Weng
- Department of Radiology, Fujian Provincial Maternity and Child Health Hospital, Fuzhou, Fujian, China
| | - Z Shi
- Department of Radiology, First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, 350005, China
| | - H Sun
- Department of Radiology, First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, 350005, China
| | - J Chen
- Department of Radiology, First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, 350005, China
| | - X Xu
- Department of Radiology, First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, 350005, China
| | - R Ye
- Department of Radiology, First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, 350005, China
| | - J Hong
- Department of Radiation Oncology, First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, China
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Wang HM, Zhao W, Jia DY, Hu J, Li ZQ, Yan C, You TY. Myocardial Infarction Detection Based on Multi-lead Ensemble Neural Network. Annu Int Conf IEEE Eng Med Biol Soc 2019; 2019:2614-2617. [PMID: 31946432 DOI: 10.1109/embc.2019.8856392] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Automatic myocardial infarction (MI) detection using an electrocardiogram (ECG) is of great significance for improving the survival rate of patients. In this study, we propose a multi-lead ensemble neural network (MENN) to distinguish anterior myocardial infarction (AMI) and inferior myocardial infarction (IMI) from healthy control (HC) respectively. In the study, three kinds of sub-networks and multi-lead ECG signals are combined, which fully explores the information of ECG signals and improves the classification performance. The algorithm is evaluated on the PTB database by 5-fold inter-subject cross-validation and the sensitivity (Se), specificity (Sp) and area under the curve (AUC) of AMI detection are 98.35%, 97.49%, 97.92%; The Se, Sp, and AUC of IMI detection are 93.17%, 92.02%, 92.60%. The proposed method achieves the state of the art results on both tasks and outperforms the baseline methods. Hence, the proposed method is potential for automatic MI diagnosis.
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Xiong Y, Cao F, Hu L, Yan C, Chen L, Panayi AC, Sun Y, Zhou W, Zhang P, Wu Q, Xue H, Liu M, Liu Y, Liu J, Abududilibaier A, Mi B, Liu G. miRNA-26a-5p Accelerates Healing via Downregulation of PTEN in Fracture Patients with Traumatic Brain Injury. Mol Ther Nucleic Acids 2019; 17:223-234. [PMID: 31272072 PMCID: PMC6610686 DOI: 10.1016/j.omtn.2019.06.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 05/25/2019] [Accepted: 06/01/2019] [Indexed: 01/11/2023]
Abstract
Patients who sustain a traumatic brain injury (TBI) are known to have a significantly quicker fracture healing time than patients with isolated fractures, but the underlying mechanism has yet to be identified. In this study, we found that the upregulation of miRNA-26a-5p induced by TBI correlated with a decrease in phosphatase and tensin homolog (PTEN) in callus formation. In vitro, overexpressing miRNA-26a-5p inhibited PTEN expression and accelerated osteoblast differentiation, whereas silencing of miRNA-26a-5p inhibited osteoblast activity. Reduction of PTEN facilitated osteoblast differentiation via the PI3K/AKT signaling pathway. Through luciferase assays, we found evidence that PTEN is a miRNA-26a-5p target gene that negatively regulates the differentiation of osteoblasts. Moreover, the present study confirmed that preinjection of agomiR-26a-5p leads to increased bone formation. Collectively, these results indicate that miRNA-26a-5p overexpression may be a key factor governing the improved fracture healing observed in TBI patients after the downregulation of PTEN and PI3K/AKT signaling. Upregulation of miRNA-26a-5p may therefore be a promising therapeutic strategy for promoting fracture healing.
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Affiliation(s)
- Yuan Xiong
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Faqi Cao
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Liangcong Hu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Chenchen Yan
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Lang Chen
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Adriana C Panayi
- Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02215, USA
| | - Yun Sun
- Department of Neurosurgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Wu Zhou
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Peng Zhang
- Department of Orthopaedics, The Second Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Qipeng Wu
- Department of Orthopaedics, Pu'ai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Hang Xue
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Mengfei Liu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yi Liu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Jing Liu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Abudula Abududilibaier
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Bobin Mi
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
| | - Guohui Liu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
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86
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Li Y, Chen J, Weng S, Sun H, Yan C, Xu X, Ye R, Hong J. Small hepatocellular carcinoma: using MRI to predict histological grade and Ki-67 expression. Clin Radiol 2019; 74:653.e1-653.e9. [PMID: 31200932 DOI: 10.1016/j.crad.2019.05.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 05/16/2019] [Indexed: 02/07/2023]
Abstract
AIMS To investigate the predictive indicators of small aggressive hepatocellular carcinomas by examining the association between preoperative magnetic resonance imaging (MRI) parameters and Ki-67 expression and histological grade. MATERIALS AND METHODS Sixty patients with small hepatocellular carcinomas (tumour diameter: ≤3 cm, tumour numbers: ≤2) who underwent curative resection or biopsy after contrast-enhanced and diffusion-weighted MRI were evaluated retrospectively. Signal intensity (SI) of the whole lesion and erector spinae muscle was measured quantitatively. Tumour-to-muscle SI ratio was calculated. The association between these MRI parameters and histological grade and Ki-67 level was then investigated. RESULTS There was a significant correlation between tumour-to-muscle SI ratio and histological grade in tissues captured during the non-enhanced T1-weighted (p=0.001), arterial phase (p=0.001), and portal venous phase (p=0.036) of dynamic contrast-enhanced MRI and apparent diffusion coefficient (p=0.027). Arterial inhomogeneous enhancement was also correlated with high-Ki-67 expression (p=0.032). CONCLUSIONS Preoperative MRI may serve as a non-invasive tool for prediction of small, aggressive hepatocellular carcinomas, which may otherwise be treated conservatively.
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Affiliation(s)
- Y Li
- Department of Radiology, First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, 350005, China.
| | - J Chen
- Department of Radiology, First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, 350005, China
| | - S Weng
- Department of Radiology, Fujian Provincial Maternity and Child Health Hospital, Fuzhou, Fujian, 350001, China
| | - H Sun
- Department of Radiology, First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, 350005, China
| | - C Yan
- Department of Radiology, First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, 350005, China
| | - X Xu
- Department of Radiology, First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, 350005, China
| | - R Ye
- Department of Radiology, First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, 350005, China
| | - J Hong
- Key Laboratory of Radiation Biology (Fujian Medical University), Fujian Province University; Department of Radiation Oncology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, China
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87
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Li CH, van 't Erve OMJ, Yan C, Li L, Jonker BT. Electrical detection of current generated spin in topological insulator surface states: Role of interface resistance. Sci Rep 2019; 9:6906. [PMID: 31061408 PMCID: PMC6502888 DOI: 10.1038/s41598-019-43302-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 04/12/2019] [Indexed: 11/21/2022] Open
Abstract
Current generated spin polarization in topological insulator (TI) surface states due to spin-momentum locking has been detected recently using ferromagnet/tunnel barrier contacts, where the projection of the TI spin onto the magnetization of the ferromagnet is measured as a voltage. However, opposing signs of the spin voltage have been reported, which had been tentatively attributed to the coexistence of trivial two-dimensional electron gas states on the TI surface which may exhibit opposite current-induced polarization than that of the TI Dirac surface states. Models based on electrochemical potential have been presented to determine the sign of the spin voltage expected for the TI surface states. However, these models neglect critical experimental parameters which also affect the sign measured. Here we present a Mott two-spin current resistor model which takes into account these parameters such as spin-dependent interface resistances, and show that such inclusion can lead to a crossing of the voltage potential profiles for the spin-up and spin-down electrons within the channel, which can lead to measured spin voltages of either sign. These findings offer a resolution of the ongoing controversy regarding opposite signs of spin signal reported in the literature, and highlight the importance of including realistic experimental parameters in the model.
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Affiliation(s)
- C H Li
- Materials Science and Technology Division, Naval Research Laboratory, Washington, DC, 20375, USA.
| | - O M J van 't Erve
- Materials Science and Technology Division, Naval Research Laboratory, Washington, DC, 20375, USA
| | - C Yan
- Department of Physics and Astronomy, West Virginia University, Morgantown, WV, 26506, USA
| | - L Li
- Department of Physics and Astronomy, West Virginia University, Morgantown, WV, 26506, USA
| | - B T Jonker
- Materials Science and Technology Division, Naval Research Laboratory, Washington, DC, 20375, USA
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88
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Qi X, Wang W, Zhang J, Yan C, Zhu Y, Zhang F. Aqueously soluble semi‐aromatic copolyamides with dual‐functional groups as sizing agent. J Appl Polym Sci 2019. [DOI: 10.1002/app.47132] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- X. Qi
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of EducationCollege of Chemistry and Molecular Engineering, Peking University Beijing 100871 China
| | - W. Wang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of EducationCollege of Chemistry and Molecular Engineering, Peking University Beijing 100871 China
| | - J. Zhang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of EducationCollege of Chemistry and Molecular Engineering, Peking University Beijing 100871 China
| | - C. Yan
- Zhejiang Provincial Key Laboratory of Robotics and Intelligent Manufacturing Equipment TechnologyNingbo Institute of Material Technology and Engineering, Chinese Academy of Sciences Ningbo 100871 China
| | - Y. Zhu
- Zhejiang Provincial Key Laboratory of Robotics and Intelligent Manufacturing Equipment TechnologyNingbo Institute of Material Technology and Engineering, Chinese Academy of Sciences Ningbo 100871 China
| | - F. Zhang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of EducationCollege of Chemistry and Molecular Engineering, Peking University Beijing 100871 China
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89
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Hu YB, Yan C, Mu L, Mi YL, Zhao H, Hu H, Li XL, Tao DD, Wu YQ, Gong JP, Qin JC. Exosomal Wnt-induced dedifferentiation of colorectal cancer cells contributes to chemotherapy resistance. Oncogene 2019; 38:1951-1965. [PMID: 30390075 PMCID: PMC6756234 DOI: 10.1038/s41388-018-0557-9] [Citation(s) in RCA: 134] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 09/02/2018] [Accepted: 10/02/2018] [Indexed: 12/11/2022]
Abstract
Cancer stem cells (CSCs) are inherently resistant to chemotherapy, and CSCs in chemotherapy-failed recurrent tumors are enriched; however, the cellular origin of chemotherapy-induced CSC enrichment remains unclear. Communication with stromal fibroblasts may induce cancer cell dedifferentiation into CSCs through secreted factors. We recently demonstrated that fibroblast-derived exosomes promote chemoresistance in colorectal cancer (CRC). Here, we report that fibroblasts confer CRC chemoresistance via exosome-induced reprogramming (dedifferentiation) of bulk CRC cells to phenotypic and functional CSCs. At the molecular level, we provided evidence that the major reprogramming regulators in fibroblast-exosomes are Wnts. Exosomal Wnts were found to increase Wnt activity and drug resistance in differentiated CRC cells, and inhibiting Wnt release diminished this effect in vitro and in vivo. Together, our results indicate that exosomal Wnts derived from fibroblasts could induce the dedifferentiation of cancer cells to promote chemoresistance in CRC, and suggest that interfering with exosomal Wnt signaling may help to improve chemosensitivity and the therapeutic window.
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Affiliation(s)
- Y-B Hu
- Department of Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- Molecular Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - C Yan
- Department of Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- Molecular Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - L Mu
- Department of Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- Molecular Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Y-L Mi
- Department of Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- Molecular Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - H Zhao
- Department of Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- Molecular Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - H Hu
- Department of Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- Molecular Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - X-L Li
- Molecular Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - D-D Tao
- Molecular Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Y-Q Wu
- Department of Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - J-P Gong
- Department of Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
- Molecular Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - J-C Qin
- Department of Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
- Molecular Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
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90
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Abdallah Y, Yang M, Zhang M, Masum MMI, Ogunyemi SO, Hossain A, An Q, Yan C, Li B. Plant growth promotion and suppression of bacterial leaf blight in rice by Paenibacillus polymyxa Sx3. Lett Appl Microbiol 2019; 68:423-429. [PMID: 30659625 DOI: 10.1111/lam.13117] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 01/10/2019] [Accepted: 01/10/2019] [Indexed: 02/03/2023]
Abstract
The effects and mechanisms of Paenibacillus polymyxa Sx3 on growth promotion and the suppression of bacterial leaf blight in rice were evaluated in this study. The results from a plate assay indicated that Sx3 inhibited the growth of 20 strains of Xanthomonas oryzae pv. oryzae (Xoo). Rice seedling experiments indicated that Sx3 promoted plant growth and suppressed bacterial leaf blight. In addition, bacteriological tests showed that Sx3 was able to fix nitrogen, solubilize phosphate and produce indole acetic acid, indicating that various mechanisms may be involved in the growth promotion by Sx3. The culture filtrate of P. polymyxa Sx3 reduced bacterial growth, biofilm formation and disrupted the cell morphology of Xoo strain GZ 0005, as indicated by the transmission and scanning electron microscopic observations. In addition, MALDI-TOF MS analysis revealed that Sx3 could biosynthesize two types of secondary metabolites fusaricidins and polymyxin P. In summary, this study clearly indicated that P. polymyxa Sx3 has strong in vitro and in vivo antagonistic activity against Xoo, which may be at least partially attributed to its production of secondary metabolites. SIGNIFICANCE AND IMPACT OF THE STUDY: Antagonistic bacteria can grow well in their originating environment. However, it is unclear whether antagonistic bacteria were able to survive in different ecological environments. This study revealed that Paenibacillus polymyxa Sx3 isolated from rhizosphere soil of cotton significantly promoted the plant growth and suppressed bacterial leaf blight in rice. Therefore, it could be inferred that P. polymyxa Sx3 has the potential to be used as biocontrol agents in plants grown in different ecological environments.
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Affiliation(s)
- Y Abdallah
- State Key laboratory of Rice Biology and Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou, China.,Department of Plant Pathology, Minia University, El-Minya, Egypt
| | - M Yang
- State Key laboratory of Rice Biology and Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou, China
| | - M Zhang
- State Key laboratory of Rice Biology and Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou, China
| | - Md M I Masum
- State Key laboratory of Rice Biology and Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou, China
| | - S O Ogunyemi
- State Key laboratory of Rice Biology and Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou, China
| | - A Hossain
- State Key laboratory of Rice Biology and Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou, China
| | - Q An
- State Key laboratory of Rice Biology and Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou, China
| | - C Yan
- Institute of Plant Virology, Ningbo University, Ningbo, China.,Institute of Biotechnology, Ningbo Academy of Agricultural Sciences, Ningbo, China
| | - B Li
- State Key laboratory of Rice Biology and Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou, China
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91
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Zhang HM, Yan C, Zhu QS. Theoretical investigation on the optical and EPR spectra for Cu 2+ -doped ZnO-CdS nanocomposites. Magn Reson Chem 2018; 57:144-148. [PMID: 30520108 DOI: 10.1002/mrc.4813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 11/01/2018] [Accepted: 11/29/2018] [Indexed: 06/09/2023]
Abstract
The three optical absorption bands and EPR parameters of the [CuO6 ]10- center in the ZnO-CdS composite nanopowders are theoretically studied from the perturbation formulas based on the cluster approach. In the formulas, the contributions to EPR parameters arising from the ligand orbital and spin-orbit coupling interactions via covalence effect are considered. For the studied [CuO6 ]10- cluster, the Cu-O bond lengths are suggested to show a relative elongation ratio ρ (≈ 4.1%) along the z-axis due to Jahn-Teller effect. The defect models suggested in this work are different from the previous assumption that the impurity Cu2+ can replace the host Zn2+ site when it enters the lattices of the ΖnO and ΖnS nanocrystals, forming the tetrahedral [CuΧ4 ]6- clusters (Χ = O, S). The validity of the proposed model is discussed. The differences between the present calculations and the previous ones for the interstitial Cu2+ center in ZnO nanocrystals are analyzed in view of the dissimilar impurity behaviors due to the new composition CdS and distinct preparation conditions.
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Affiliation(s)
- H M Zhang
- Jiangxi Engineering Laboratory for Optoelectronics Testing Technology, Nanchang Hangkong University, Nanchang, China
- Key Laboratory of Nondestructive Testing, Ministry of Education, Nanchang Hangkong University, Nanchang, China
| | - C Yan
- Jiangxi Engineering Laboratory for Optoelectronics Testing Technology, Nanchang Hangkong University, Nanchang, China
- Key Laboratory of Nondestructive Testing, Ministry of Education, Nanchang Hangkong University, Nanchang, China
| | - Q S Zhu
- Jiangxi Engineering Laboratory for Optoelectronics Testing Technology, Nanchang Hangkong University, Nanchang, China
- Key Laboratory of Nondestructive Testing, Ministry of Education, Nanchang Hangkong University, Nanchang, China
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92
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Cabanas M, Yan C, Lalonde R, Heron D, Huq S. What Dose Specification Should be used for NRG Radiation Therapy Trials, Dose-to-Medium or Dose-to-Water? Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1492] [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: 10/28/2022]
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93
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Zhao Y, Yan C. MITOCHONDRIAL DISEASES (Posters). Neuromuscul Disord 2018. [DOI: 10.1016/j.nmd.2018.06.211] [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: 11/25/2022]
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94
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Liu L, Tong Z, Yan C, Zhang H, Jiang W, Zheng Y, Zhao P, Fang W. Dynamic monitoring of KRAS, NRAS, BRAF and PIK3CA mutations in circulating cell-free DNA for metastatic colorectal cancer patients treated with cetuximab. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy281.099] [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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95
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Zheng Y, Yang X, Shi H, Yang Z, Yan C, Ni Z, Li M, Sah B, Liu W, Xu W, Yao X, Zhu Z, Yan M, Zhu Z, Li C. Phase II trial of neoadjuvant therapy using apatinib plus SOX regimen in locally advanced gastric cancer: Updated results. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy282.057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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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96
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Zhao Y, Yan C. MITOCHONDRIAL DISEASES (Posters). Neuromuscul Disord 2018. [DOI: 10.1016/j.nmd.2018.06.212] [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: 10/28/2022]
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97
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Voisin B, Doebel T, Kelly M, Kobayashi T, Kim D, Yan C, Hu Y, Kelley M, Nagao K. LB1567 Ablation of macrophages from hypodermal adventitia disrupts the collagen network resulting in hyperelastic skin. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.06.103] [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: 11/26/2022]
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98
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Yan C, Pan X, Li S, Song H, Liu Q, Zhang F, Guo G, Liu Y, Jiang X, Jiang Y, Wan L, Li H. 6012Combination of fenestrated atrial septal occluder with targeted medical therapy in patients with secundum atrial septal defect and severe pulmonary arterial hypertension. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.6012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- C Yan
- Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Department of Structural Heart Disease, Beijing, China People's Republic of
| | - X Pan
- Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Department of Structural Heart Disease, Beijing, China People's Republic of
| | - S Li
- Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Department of Structural Heart Disease, Beijing, China People's Republic of
| | - H Song
- Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Department of Structural Heart Disease, Beijing, China People's Republic of
| | - Q Liu
- Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Department of Structural Heart Disease, Beijing, China People's Republic of
| | - F Zhang
- Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Department of Structural Heart Disease, Beijing, China People's Republic of
| | - G Guo
- Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Department of Structural Heart Disease, Beijing, China People's Republic of
| | - Y Liu
- Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Department of Structural Heart Disease, Beijing, China People's Republic of
| | - X Jiang
- Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Department of Structural Heart Disease, Beijing, China People's Republic of
| | - Y Jiang
- Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Department of Structural Heart Disease, Beijing, China People's Republic of
| | - L Wan
- Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Department of Structural Heart Disease, Beijing, China People's Republic of
| | - H Li
- Tong Ren Hospital, Capital Medical University, Beijing, China People's Republic of
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99
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Li CH, van 't Erve OMJ, Yan C, Li L, Jonker BT. Electrical Detection of Charge-to-spin and Spin-to-Charge Conversion in a Topological Insulator Bi 2Te 3 Using BN/Al 2O 3 Hybrid Tunnel Barrier. Sci Rep 2018; 8:10265. [PMID: 29980749 PMCID: PMC6035191 DOI: 10.1038/s41598-018-28547-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Accepted: 06/18/2018] [Indexed: 11/18/2022] Open
Abstract
One of the most striking properties of three-dimensional topological insulators (TIs) is spin-momentum locking, where the spin is locked at right angles to momentum and hence an unpolarized charge current creates a net spin polarization. Alternatively, if a net spin is injected into the TI surface state system, it is distinctively associated with a unique carrier momentum and hence should generate a charge accumulation, as in the so-called inverse Edelstein effect. Here using a Fe/Al2O3/BN tunnel barrier, we demonstrate both effects in a single device in Bi2Te3: the electrical detection of the spin accumulation generated by an unpolarized current flowing through the surface states, and that of the charge accumulation generated by spins injected into the surface state system. This work is the first to utilize BN as part of a hybrid tunnel barrier on TI, where we observed a high spin polarization of 93% for the TI surfaces states. The reverse spin-to-charge measurement is an independent confirmation that spin and momentum are locked in the surface states of TI, and offers additional avenues for spin manipulation. It further demonstrates the robustness and versatility of electrical access to the spin system within TI surface states, an important step towards its utilization in TI-based spintronics devices.
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Affiliation(s)
- C H Li
- Materials Science and Technology Division, Naval Research Laboratory, Washington, DC, 20375, USA.
| | - O M J van 't Erve
- Materials Science and Technology Division, Naval Research Laboratory, Washington, DC, 20375, USA
| | - C Yan
- Department of Physics and Astronomy, West Virginia University, Morgantown, WV, 26506, USA
| | - L Li
- Department of Physics and Astronomy, West Virginia University, Morgantown, WV, 26506, USA
| | - B T Jonker
- Materials Science and Technology Division, Naval Research Laboratory, Washington, DC, 20375, USA
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Yan C, Kumar S, Thomas K, See P, Farrer I, Ritchie D, Griffiths J, Jones G, Pepper M. Engineering the spin polarization of one-dimensional electrons. J Phys Condens Matter 2018; 30:08LT01. [PMID: 29334361 DOI: 10.1088/1361-648x/aaa7ce] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We present results of magneto-focusing on the controlled monitoring of spin polarization within a one-dimensional (1D) channel, and its subsequent effect on modulating the spin-orbit interaction (SOI) in a 2D GaAs electron gas. We demonstrate that electrons within a 1D channel can be partially spin polarized as the effective length of the 1D channel is varied in agreement with the theoretical prediction. Such polarized 1D electrons when injected into a 2D region result in a split in the odd-focusing peaks, whereas the even peaks remain unaffected (single peak). On the other hand, the unpolarized electrons do not affect the focusing spectrum and the odd and even peaks remain as single peaks, respectively. The split in odd-focusing peaks is evidence of direct measurement of spin polarization within a 1D channel, where each sub-peak represents the population of a particular spin state. Confirmation of the spin splitting is determined by a selective modulation of the focusing peaks due to the Zeeman energy in the presence of an in-plane magnetic field. We suggest that the SOI in the 2D regime is enhanced by a stream of polarized 1D electrons. The spatial control of spin states of injected 1D electrons and the possibility of tuning the SOI may open up a new regime of spin-engineering with application in future quantum information schemes.
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Affiliation(s)
- C Yan
- London Centre for Nanotechnology, 17-19 Gordon Street, London WC1H 0AH, United Kingdom. Department of Electronic and Electrical Engineering, University College London, Torrington Place, London WC1E 7JE, United Kingdom
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