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Kong H, Cao J, Tian J, Yong J, An J, Zhang L, Song X, He Y. Coronary microvascular dysfunction: prevalence and aetiology in patients with suspected myocardial ischaemia. Clin Radiol 2024; 79:386-392. [PMID: 38433042 DOI: 10.1016/j.crad.2024.01.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 09/19/2023] [Accepted: 01/09/2024] [Indexed: 03/05/2024]
Abstract
AIM To evaluate the prevalence, aetiology, and corresponding morbidity of coronary microvascular dysfunction (CMD) in patients with suspected myocardial ischaemia. MATERIALS AND METHODS The present study included 115 patients with suspected myocardial ischaemia who underwent stress perfusion cardiac magnetic resonance imaging. CMD was assessed visually based on the myocardial perfusion results. The CMR-derived myocardial perfusion reserve index (MPRI) and left ventricular (LV) strain parameters obtained using the post-processing software CVI42 were employed to evaluate LV myocardial perfusion and deformation. LV strain parameters included global longitudinal, circumferential, and radial strain (GLS, GCS, and GRS), global systolic/diastolic longitudinal, circumferential, and radial strain rates (SLSR, SCSR, SRSR, DLSR, DCSR, and DRSR). RESULTS Of the 115 patients, 12 patients were excluded and 103 patients were finally included in the study. CMD was observed in 79 % (81 patients, aged 53 ± 12 years) of patients. Regarding aetiology, 91 (88 %) patients had non-obstructive coronary artery disease (CAD), eight (8 %) had obstructive CAD, and four (4 %) had hypertrophic cardiomyopathy (HCM). The incidence of CMD was highest (100 %) in patients with HCM, followed by those with non-obstructive CAD (up to 79 %). There were no statistical differences between CMD and non-CMD groups in GCS, GRS, GLS, SRSR, SCSR, SLSR, DCSR, DRSR and DLSR. CONCLUSION The incidence of CMD was higher in patients with signs and symptoms of ischaemia. CMD occurred with non-obstructive CAD, obstructive CAD, and HCM, with the highest prevalence of CMD in HCM.
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Affiliation(s)
- H Kong
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China
| | - J Cao
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China
| | - J Tian
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - J Yong
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - J An
- Siemens Shenzhen Magnetic Resonance, MR Collaboration NE Asia, Shenzhen, China
| | - L Zhang
- Department of Radiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - X Song
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China.
| | - Y He
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China.
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Kong H, Cao J, Tian J, Yong J, An J, Song X, He Y. Relationship between coronary microvascular dysfunction (CMD) and left ventricular diastolic function in patients with symptoms of myocardial ischemia with non-obstructive coronary artery disease (INOCA) by cardiovascular magnetic resonance feature-tracking. Clin Radiol 2024:S0009-9260(24)00129-6. [PMID: 38679491 DOI: 10.1016/j.crad.2024.02.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 02/18/2024] [Accepted: 02/20/2024] [Indexed: 05/01/2024]
Abstract
AIM To investigate whether there was an association between coronary microvascular dysfunction (CMD) and left ventricular (LV) diastolic function in patients with myocardial ischemia with non-obstructive coronary artery disease (INOCA). MATERIALS AND METHODS Our study included 115 subjects with suspected myocardial ischemia that underwent stress perfusion cardiac magnetic resonance (CMR). They were divided into non-CMD and CMD two groups. CMR-derived volume-time curves and CMR-FT parameters were used to assess LV diastolic function using CVI42 software. The latter included global/regional LV peak longitudinal, circumferential, radial diastolic strain rate (LDSR, CDSR, RDSR). Logistic regression analysis was performed with CMR-FT strain parameters as independent variables and CMD as dependent variables, and the effect value was expressed as an odds ratio (OR). RESULTS Of the 115 patients, we excluded data from 23 patients and 92 patients (56.5% male;52 ± 12 years) were finally included in the study. Of these, 19 patients were included in the non-CMD group (49 ± 11 years) and CMD group included 73patient (52 ± 12 years). The regional CDSR (P=0.019), and regional RDSR (P=0.006) were significantly lower in the CMD group than in non-CMD group. But, regional LDSR in CMD group was higher than non-CMD (P=0.003). In logistic regression analysis, regional LDSR (adjusted β= 0.1, 95%CI 0.077, 0.349, p=0.002) and RDSR (adjusted β= 0.1, 95 % CI 0.066, 0.356, p=0.004) were related to CMD. CONCLUSIONS LV myocardial perfusion parameter MPRI was negatively correlated with LV diastolic function (CDSR) which needs to take into account the degree of diastolic dysfunction.
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Affiliation(s)
- H Kong
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China
| | - J Cao
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China
| | - J Tian
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - J Yong
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - J An
- Siemens Shenzhen Magnetic Resonance, MR Collaboration NE Asia, Shenzhen, China
| | - X Song
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China.
| | - Y He
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China.
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3
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Jin LL, He MY, Zhou H, Xie WP, Kong H. [Effects of macrophage glycolytic reprogramming on tuberculosis granuloma formation]. Zhonghua Jie He He Hu Xi Za Zhi 2023; 46:834-838. [PMID: 37536997 DOI: 10.3760/cma.j.cn112147-20221119-00912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
The formation of granulomatous lesions is a typical pathological feature of tuberculosis, and infection with Mycobacterium tuberculosis is the main cause. Although the mechanism underlying granuloma formation remains unclear, increasing evidence suggests that immune metabolism plays an important role. In this review, we summarized the latest advances in macrophage glycolytic reprogramming in tuberculosis granuloma formation to discover new methods for early diagnosis and provided new ideas for tuberculosis therapeutics based on the regulation of immune metabolism.
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Affiliation(s)
- L L Jin
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - M Y He
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - H Zhou
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - W P Xie
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - H Kong
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
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4
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Mehta A, Goldberg J, Bagchi P, Marboe C, Shah K, Najjar S, Hsu S, Rodrigo M, Jang M, Cochrane A, Tchoukina I, Kong H, Lohmar B, Mcnair E, Valantine H, Agbor-Enoh S, Berry G, Shah P. Cell-Free DNA Enhances Pathologist Interrater Reliability at the Assessment of Acute Rejection on Endomyocardial Biopsy, on Behalf of the GRAfT Investigators. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1524] [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: 04/05/2023] Open
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5
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Hamad Y, Charya A, Kong H, Jang M, Andargie T, Shah P, Mathew J, Orens J, Aryal S, Nathan S, Agbor-Enoh S. Anellovirus: A Novel Marker for Overimmunosuppression and Risk of Infection in Lung Transplant Recipients. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1417] [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: 04/05/2023] Open
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6
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Goldberg J, deFilippi C, Lockhart C, McNair E, Sinha S, Kong H, Najjar S, Lohmar B, Tchoukina I, Shah K, Feller E, Hsu S, Rodrigo M, Jang M, Marboe C, Berry G, Valantine H, Agbor-Enoh S, Shah P. Dysregulated Circulating Proteins in Cellular and Antibody-Mediated Rejection, on Behalf of the Graft Investigators. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.146] [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: 04/05/2023] Open
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7
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Kong H, Chung M, Doran DS, Ha G, Kim SH, Kim JH, Liu W, Lu X, Power J, Seok JM, Shin S, Shao J, Whiteford C, Wisniewski E. Fabrication of THz corrugated wakefield structure and its high power test. Sci Rep 2023; 13:3207. [PMID: 36828881 PMCID: PMC9958108 DOI: 10.1038/s41598-023-29997-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 02/14/2023] [Indexed: 02/26/2023] Open
Abstract
We present overall process for developing terahertz (THz) corrugated structure and its beam-based measurement results. 0.2-THz corrugated structures were fabricated by die stamping method as the first step demonstration towards GW THz radiation source and GV/m THz wakefield accelerator. 150-[Formula: see text]m thick disks were produced from an OFHC (C10100) foil by stamping. Two types of disks were stacked alternately to form 46 mm structure with [Formula: see text] 170 corrugations. Custom assembly was designed to provide diffusion bonding with a high precision alignment of disks. The compliance of the fabricated structure have been verified through beam-based wakefield measurement at Argonne Wakefield Accelerator Facility. Both measured longitudinal and transverse wakefield showed good agreement with simulated wakefields. Measured peak gradients, 9.4 MV/m/nC for a long single bunch and 35.4 MV/m/nC for a four bunch trains, showed good agreement with the simulation.
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Affiliation(s)
- H Kong
- Pohang Accelerator Laboratory, POSTECH, Pohang, Gyungbuk, 37673, Korea.,Department of Physics, Kyungpook National University, Daegu, 41566, Korea
| | - M Chung
- Ulsan National Institute of Science and Technology, Ulsan, 44919, Korea
| | - D S Doran
- Argonne National Laboratory, Argonne, IL, 60439, USA
| | - G Ha
- Argonne National Laboratory, Argonne, IL, 60439, USA.
| | - S-H Kim
- Pohang Accelerator Laboratory, POSTECH, Pohang, Gyungbuk, 37673, Korea
| | - J-H Kim
- Pohang Accelerator Laboratory, POSTECH, Pohang, Gyungbuk, 37673, Korea
| | - W Liu
- Argonne National Laboratory, Argonne, IL, 60439, USA
| | - X Lu
- Argonne National Laboratory, Argonne, IL, 60439, USA.,Northern Illinois University, Dekalb, IL, 60115, USA
| | - J Power
- Argonne National Laboratory, Argonne, IL, 60439, USA
| | - J-M Seok
- Pohang Accelerator Laboratory, POSTECH, Pohang, Gyungbuk, 37673, Korea.,Argonne National Laboratory, Argonne, IL, 60439, USA
| | - S Shin
- Department of Accelerator Science, Korea University, Sejong, 30019, Korea.
| | - J Shao
- Argonne National Laboratory, Argonne, IL, 60439, USA
| | - C Whiteford
- Argonne National Laboratory, Argonne, IL, 60439, USA
| | - E Wisniewski
- Argonne National Laboratory, Argonne, IL, 60439, USA
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Wen JL, Wang XY, Gu SJ, Li TT, Shi LC, Kong H, Qi X. [Progress in clinical diagnosis and treatment of multiple primary lung cancer]. Zhonghua Jie He He Hu Xi Za Zhi 2022; 45:826-834. [PMID: 35927054 DOI: 10.3760/cma.j.cn112147-20211209-00870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
With the application of high-resolution chest imaging system and lung cancer screening program, patients with multiple primary lung cancer (MPLC) are becoming a growing population in clinical practice. However, the diagnostic criteria of MPLC and its differentiation from intrapulmonary metastasis of lung cancer (IM) are still controversial, especially in cases with similar histology. On the basis of reviewing the existing literature, this paper discusses the changes of the diagnostic criteria of MPLC and the differential diagnosis methods of imaging, histology and molecular genetics of MPLC and IM, and briefly introduces the application of multidisciplinary diagnosis, algorithm, predictive model and artificial intelligence in the differential diagnosis of MPLC. In addition, we also discuss the latest progress in the treatment of MPLC. Radical surgery is the main method for the treatment of MPLC. Stereotactic body radiation therapy (SBRT) is safe and feasible for inoperable MPLC patients, and targeted therapy and immunotherapy can also be used in MPLC after appropriate patient selection.
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Affiliation(s)
- J L Wen
- Department of Respiratory and Critical Care Medicine, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - X Y Wang
- Department of Respiratory and Critical Care Medicine, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - S J Gu
- Department of Respiratory and Critical Care Medicine, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - T T Li
- Department of Respiratory and Critical Care Medicine, Xuzhou Central Hospital, Xuzhou 221009, China
| | - L C Shi
- Department of Respiratory and Critical Care Medicine, Affiliated Geriatric Hospital of Nanjing Medical University, Nanjing 210024, China
| | - H Kong
- Department of Respiratory and Critical Care Medicine, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - X Qi
- Department of Respiratory and Critical Care Medicine, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
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9
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Bon A, Gerhard E, Mathew J, Kong H, Jang M, Henry L, Lee B, Hsu S, Shah K, Tchoukina I, Sterling S, Rodrigo M, Najjar S, Marboe C, Berry G, Valantine H, Shah P, Agbor-Enoh S. Cell-Free DNA to Distinguish High Risk Donor Specific Antibodies in Heart Transplantation. J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.01.1209] [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: 11/24/2022] Open
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10
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Agbor-Enoh S, Jang M, Kong H, Andargie T, Shah P, Nathan S. Is Acute Rejection Truly Acute or an Exacerbation of an Underlying Disease? J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.01.098] [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] Open
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11
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Meda R, Fu S, Yu K, Charya A, Kong H, Jang M, Andargie T, Park W, Lee J, Tunc I, Berry G, Marboe C, Shah P, Nathan S, Keller M, Agbor-Enoh S. Comparative Performance Analysis of Donor-Derived Cell-Free DNA to Detect Acute Rejection in Single and Double Lung Transplant Recipients. J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.01.764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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12
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Charya A, Ponor I, Jang M, Kong H, Shah P, Mathew J, Luikart H, Khush K, Berry G, Orens J, Marboe C, Nathan S, Agbor-Enoh S. Restrictive Allograft Syndrome Patients Have Higher Cell-Free DNA Assessed Allograft Injury Prior to Diagnosis. J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.01.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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13
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Jang M, Singh K, Andargie T, Seifuddin F, Tunc I, Park W, Lee J, Kong H, Agbor-Enoh S. Genome-Wide DNA Methylation Analysis to Define Pulmonary Antibody-Mediated Rejection (AMR) Treatment Response. J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.01.088] [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: 10/18/2022] Open
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14
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Richardson AE, Cheng J, Johnston R, Kennaway R, Conlon BR, Rebocho AB, Kong H, Scanlon MJ, Hake S, Coen E. Evolution of the grass leaf by primordium extension and petiole-lamina remodeling. Science 2021; 374:1377-1381. [PMID: 34882477 DOI: 10.1126/science.abf9407] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- A E Richardson
- John Innes Centre, Norwich Research Park, Norwich NR4 7UH, UK.,Agricultural Research Service/US Department of Agriculture Plant Gene Expression Center, Albany, CA 94710, USA.,Institute of Molecular Plant Science, School of Biological Sciences, University of Edinburgh, Edinburgh EH9 3BF, UK
| | - J Cheng
- John Innes Centre, Norwich Research Park, Norwich NR4 7UH, UK.,State Key Laboratory of Systematic and Evolutionary Botany, CAS Center for Excellence in Molecular Plant Sciences, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China.,College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - R Johnston
- Plant Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA.,The Elshire Group Limited, Palmerston North 4472, New Zealand
| | - R Kennaway
- John Innes Centre, Norwich Research Park, Norwich NR4 7UH, UK
| | - B R Conlon
- Plant Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
| | - A B Rebocho
- John Innes Centre, Norwich Research Park, Norwich NR4 7UH, UK
| | - H Kong
- State Key Laboratory of Systematic and Evolutionary Botany, CAS Center for Excellence in Molecular Plant Sciences, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China.,College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - M J Scanlon
- Plant Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
| | - S Hake
- Agricultural Research Service/US Department of Agriculture Plant Gene Expression Center, Albany, CA 94710, USA
| | - E Coen
- John Innes Centre, Norwich Research Park, Norwich NR4 7UH, UK
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Kong H, Francois S, Smith S, Spraker M, Lawley L, Lee G, Chen K, Roberts J, Chen S. 300 Comparison of ItchyQuant, KidsItchyQoL and TweenItchyQoL: Pruritus assessment tools for 6-7-year-olds vs. 8-17 year olds. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.02.322] [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: 11/17/2022]
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Charya A, Jang M, Sun J, Mutebi C, Luikart H, Shah P, Matthews J, Brown A, Kong H, Tunc I, Berry G, Marboe C, Iacono A, Nathan S, Khush K, Orens J, Valantine H, Agbor-Enoh S. Racial Differences in Immunosuppression and Lung Transplant Outcomes. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.474] [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] Open
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17
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Andargie T, Jang M, Seifuddin F, Kong H, Tunc I, Singh K, Woodward R, Pirooznia M, Valantine H, Agbor-Enoh S. Cell-Free DNA Tissue Damage Mapping in Transplant Patients Infected with COVID-19. J Heart Lung Transplant 2021. [PMCID: PMC7979332 DOI: 10.1016/j.healun.2021.01.437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Purpose Patients with COVID-19 show variable clinical course; transplant patients often show worse outcomes. The effect of COVID-19 on the allograft and the sources of tissue injury that contribute to such poor outcomes are poorly defined. This study leverages cell-free DNA (cfDNA) to measure allograft injury as donor-derived cfDNA (ddcfDNA) and injury from different tissue types using tissue-specific DNA methylomic signatures. Methods 14 consecutive COVID-19 transplant patients (8 Kidney, 3 Lung, 1 Heart, 1 Liver, and one multi-organ transplant patients) and 30 healthy controls were included. Plasma nuclear cfDNA (ncfDNA) and mitochondrial cfDNA (mtcfDNA) level were measured via digital droplet PCR, and ddcfDNA using AlloSure (CareDx). cfDNA whole-genome bisulfite sequencing was performed to identify cfDNA tissues of origin leveraging tissue specific DNA methylomes and deconvolution algorithm. Results 75% of the COVID-19 transplant patients showed high ddcfDNA level compared to published quiescent values, including all lung, 50% of the kidney, liver and multi-organ transplant patients (8.5, 4.4, 30 and 16-X fold change, respectively). Total ncfDNA and mtcfDNA were 15X and 310X higher in COVID-19 transplant patients compared to controls, respectively; < 0.0001.The predominant tissues contributing to cfDNA were hematopoietic cells (80%) (Figure). More importantly, COVID-19 transplant patients showed 10 to 100 fold higher tissue specific cfDNA derived from monocyte, neutrophil, erythroblast, vascular endothelium, adipocyte, hepatocyte, kidney, heart and lung compared to controls. Analysis comparing cfDNA in transplant and non-transplant COVID-19 patients is on-going. Conclusion The allograft undergoes significant injury following COVID-19. Further, cfDNA from multiple tissue types is significantly higher in COVID-19 transplant patients. Future studies in a larger cohorts of transplant and non-transplant patients are needed to elucidate why transplant patients show worse COVID-19 outcomes.
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Mutebi C, Ponor L, Cochrane A, Levine D, Jang M, Luikart H, Shah P, Mathew J, Brown A, Kong H, Berry G, Marboe C, Iacono A, Nathan S, Khush K, Orens J, Valantine H, Agbor-Enoh S. Impact of AMR Treatment: Responders vs Non-Responders Characteristics. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.1929] [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: 10/21/2022] Open
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19
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Charya A, Jang M, Mutebi C, Luikart H, Shah P, Matthews J, Brown A, Kong H, Tunc I, Berry G, Marboe C, Iacono A, Nathan S, Khush K, Orens J, Valantine H, Agbor-Enoh S. Cell-Free DNA to Monitor Immunosuppression Adequacy in Lung Transplantation. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.1891] [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: 10/21/2022] Open
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Yang Y, Agbor-Enoh S, Ilker T, Hsu S, Russell S, Feller E, Shah K, Rodrigo M, Najjar S, Kong H, Pirooznia M, Jang M, Marboe C, Berry G, Shah P, Valantine H. Cardiac Allograft Injury in Patients of African Ancestry: Trends of Donor-Derived Cell-Free DNA Based on Genetic Ancestry. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.725] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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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21
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Wang C, Wu D, Liang H, Lin Z, Kong H, Zhao J, Chen X, Zhao Z, He J. 1222P Spontaneous ventilation video-assisted thoracoscopic surgery for geriatric patients with non-small cell lung cancer: A propensity score matching analysis. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1424] [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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22
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Yu Z, Feng Y, Kong H, Xiao Y, Li Y, Wang J, Cao YZ, Li DH. [Establishment of animal model of bacterial microleakage at implant-abutment interface]. Zhonghua Kou Qiang Yi Xue Za Zhi 2020; 55:337-342. [PMID: 32392977 DOI: 10.3760/cma.j.cn112144-20191203-00434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To study the bacterial microleakage at the interface between dental implant and abutment in rats. Methods: Under aseptic conditions, suspension of 0.25 μl of Porphyromonas gingivalis (Pg) (10(9) CFU/ml) was added into the customized implant. After the abutment was connected, the suspension was cultured in an Ep (eppendorf) tube containing 1 ml brain heart infusion (BHI) culture medium. After 7 days and 14 days, the liquid in the Ep tube was taken and inoculated, and the growth of bacteria was observed. Six male SD rats with 12 implants were divided into experimental group (4 implants), negative control group (4 implants) and blank control group (4 implants). All 6 rats had two implants implanted in their bilateral upper jaws. During the second operation, suspension of 0.25 μl Pg (10(9) CFU/ml) was added to the inner part of the implant of the experimental group, culture solution of 0.25 μl was added to the control group and nothing was added to the blank control group. The amount of Pg and total bacteria in each group were evaluated by quantitative real-time PCR (qPCR). The inflammatory cell infiltrate in the peri-implant mucosa was evaluated histomorphometrically. Results: The in vitro model directly verified the presence of bacterial microleakage at implant-abutment interface (IAI), and the animal model confirmed the existence of microleakage through the infiltrate of inflammatory cells near the micro-gap in the experimental group indirectly. In vitro experiments found that Pg had penetrated from the implant within a week by observation and culture. In animal study, the presence of 10(2)-10(4) Pg was detected in the experimental group and it was not detected in the negative control group and the blank control group. At the same time, under the light microscope, in the experimental group, there were inflammatory cells aggregation in the connective tissue around the micro-gap and the density of inflammatory cells gradually decreased from the micro-gap to coronal and the apical of the connective tissue, while there were only scattered inflammatory cells in the connective tissue around the blank control group and the negative control group. In the experimental group, inflammatory cells density in area of 0.25-0.50 mm, 0-0.25 mm coronal to the micro-gap and 0-0.25 mm, 0.25-0.50 mm apical to the mico-gap was respectively, 976 (655), 1 673 (1 245), 2 267 (819) and 895 (162) cells/mm(2),which was significantly more than the blank control group in the corresponding position [respectively 201 (180), 321 (351), 309 (236) and 218 (272) cells/mm(2)] (P<0.05). Conclusions: Pg in the dental implants of rats can be found in the microleakage through implant-abutment interface, and cause the soft tissue inflammation around the implant, and the inflammation has certain distribution characteristics.
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Affiliation(s)
- Z Yu
- Department of Oral Implants, School of Stomatology, The Fourth Military Medical University & State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Xi'an 710032, China
| | - Y Feng
- Department of Oral Implants, School of Stomatology, The Fourth Military Medical University & State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Xi'an 710032, China
| | - H Kong
- Department of Operative Dentistry and Endodontics, School of Stomatology, The Fourth Military Medical University & State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Xi'an 710032, China
| | - Y Xiao
- Department of Operative Dentistry and Endodontics, School of Stomatology, The Fourth Military Medical University & State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Xi'an 710032, China
| | - Y Li
- Department of Stomatology, No.960 Hospital of PLA, Jinan 250031, China
| | - J Wang
- Department of Oral Implants, School of Stomatology, The Fourth Military Medical University & State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Xi'an 710032, China
| | - Y Z Cao
- Department of Oral Implants, School of Stomatology, The Fourth Military Medical University & State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Xi'an 710032, China
| | - D H Li
- Department of Oral Implants, School of Stomatology, The Fourth Military Medical University & State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Xi'an 710032, China
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Brusca S, Jang M, Shah P, Shah K, Hsu S, Feller E, E M, Najjar S, Fideli U, Kong H, Marishta A, Bhatti K, Yang Y, Tunc I, Solomon M, Berry G, Marboe C, Agbor-Enoh S, Valantine H. Early Donor-Derived Cell-Free DNA Predicts Peak Allograft Function in Heart Transplant. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.1261] [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: 10/24/2022] Open
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Keller M, Shah P, Bush E, Diamond J, Matthews J, Brown A, Timofte I, Fideli U, Kong H, Marishta A, Bhatti K, Yang Y, Tunc I, Luikart H, Berry G, Marboe C, Iacono A, Nathan S, Khush K, Orens J, Jang M, Valentine H, Agbor-Enoh S. Donor-Derived-Cell-Free DNA to Identify Primary Graft Dysfunction Patients at Risk of Chronic Lung Allograft Dysfunction. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.959] [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: 11/15/2022] Open
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Doshi A, Tushak Z, Kong H, Garcia V, Jang M, Shah P, Hsu S, Feller E, Rodrigo M, Najjar S, Fideli U, Marishta A, Bhatti K, Yang Y, Tunc I, Solomon M, Berry G, Marboe C, Agbor-Enoh S, Shah K, Valantine H. Increased Cell Free DNA Levels in African American Patients Early after Heart Transplantation. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.922] [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: 10/24/2022] Open
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Agbor-Enoh S, Ponor I, Shah P, Levine D, Cochrane A, Philogene M, Matthews J, Brown A, Timofte I, Fideli U, Kong H, Marishta A, Bhatti K, Tunc I, Yang Y, Luikart H, Marboe C, Berry G, Iacono A, Nathan S, Khush K, Orens J, Jang M, Valantine H. To Treat or Not to Treat: DSA Positive Lung Transplant Recipients. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.1118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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27
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Philogene M, Massie A, Kong H, Shah P, Cochrane A, Ponor I, Levine D, Shah K, Hsu S, Feller E, Rodrigo M, Najjar S, Tunc I, Berry G, Marboe C, Jang M, Agbor-Enoh S, Valantine H. Association between Pretransplant Antibody against Angiotensin II Type 1 Receptor and Posttransplant Allograft Injury. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.1175] [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: 11/29/2022] Open
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28
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Ponor I, Levine D, Cochrane A, Philogene M, Shah P, Mathew J, Brown A, Timofte I, Fideli U, Kong H, Marishta A, Yang Y, Tunc I, Luikart H, Berry G, Marboe C, Iacono A, Nathan S, Khush K, Orens J, Jang M, Valentine H, Agbor-Enoh S. Lung Transplantation: DSA to AMR Trajectory. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.1299] [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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29
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Voisin B, Doebel T, Jo J, Nadella V, Kobayashi T, Kim D, Kong H, Nagao K. 404 The collagen network maintained by macrophages provides a niche for Staphylococcus aureus skin infection. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.406] [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: 11/24/2022]
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Li N, Kong H, Zhu SN, Li SL, Wang DX. [Risk factors of postoperative complications after laparoscopic surgery for pheochromocytoma]. Zhonghua Yi Xue Za Zhi 2019; 98:2999-3004. [PMID: 30392256 DOI: 10.3760/cma.j.issn.0376-2491.2018.37.010] [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 effects of intraoperative hemodynamic instability on postoperative complications of laparoscopic surgery for pheochromocytoma. Methods: It was a retrospective cohort study. According to inclusion/exclusion criteria, adult patients underwent laparoscopic surgery for pheochromocytoma from January 2005 to December 2017 in Peking University First Hospital were enrolled in this study. Eligible patients were divided into two groups by evidence of postoperative complications to find out the effects of intraoperative hemodynamic instability and its' effects on other prognostic indices. The normally distributed continuous variables were compared between two groups by Student's t test, Mann-Whitney U test were used for the comparison for non-normally distributed continuous variables and χ(2) test for categorical variables. Results: A total of 198 patients were finally enrolled in this study, including 87 males and 111 females with an average age of (47±15) years. Postoperative complications occurred in 17 patients with an incidence of 8.6%, and intraoperative hemodynamic instability occurred in 45 patients (22.7%). It was found that history of stroke[odds ratio (OR)=13.387, 95% confidence interval (CI): 2.284-78.460, P=0.004], intraoperative hemodynamic instability (OR=3.351, 95%CI: 1.119-10.039, P=0.031) and intraoperative positive fluid balance (for each additional 100 ml) (OR=1.087, 95%CI: 1.031-1.146, P=0.002)were the independent risk factors of postoperative complications of laparoscopic surgery for pheochromocytoma. Furthermore, more postoperative complications, higher rate of admitting to ICU and longer hospital stay was found in patients with hemodynamic instability. Conclusion: Intraoperative hemodynamic instability is an independent risk factor for postoperative complications of laparoscopic surgery in patients with pheochromocytoma, and it associates with more postoperative complications and higher rate of admitting to ICU.
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Affiliation(s)
- N Li
- Department of Critical Care Medicine, Peking University First Hospital, Beijing 100034, China
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Shin A, Won Y, Jung H, Kong H, Jung K, Oh C, Choe S, Lee J. Trends in incidence and survival of esophageal cancer in Korea: Analysis of the Korea Central Cancer Registry Database. J Gastroenterol Hepatol 2018; 33:1961-1968. [PMID: 29802647 PMCID: PMC6334276 DOI: 10.1111/jgh.14289] [Citation(s) in RCA: 29] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 05/01/2018] [Accepted: 05/06/2018] [Indexed: 12/20/2022]
Abstract
BACKGROUND AND AIM The diagnostic and therapeutic modalities of esophageal cancer have recently improved in Asia, and its prognosis is expected to change. This study provides a population-based report on the epidemiology of esophageal cancer in Korea. METHODS Cancer incidence data from 1999 to 2013 were obtained from the Korea Central Cancer Registry, covering the entire population. Age-standardized incidence rates and annual percent changes were calculated according to subsites and histological types. Five-year relative survival rates were estimated for cases diagnosed between 1993 and 2013. Relative excess rates were compared between patients diagnosed from 2009 to 2013 and 2006 to 2008. RESULTS The age-standardized incidence rates decreased from 8.8 per 100 000 populations in 1999 to 5.9 in 2013 with an annual percent change of -2.6% in men and -2.2% in women. The most common histological type was squamous cell carcinoma, accounting for 90.2% of all esophageal cancers in 2013, followed by adenocarcinomas (3.1%), and their incidences decreased. The proportion of localized and regional cancer tended to increase compared with that of distant cancer. Five-year relative survival of squamous cell carcinoma improved from 12.1% (1993-1995) to 34.6% (2009-2013). Relative excess rate was 0.72 (95% confidence interval 0.65-0.80) in localized stage and 0.88 (95% confidence interval, 0.82-0.95) in regional stage comparing patients diagnosed from 2009 to 2013 and 2006 to 2008. CONCLUSIONS The incidence of esophageal cancer has decreased in Korea for the past 15 years, and 5-year survival rates have improved significantly. These increases may be attributable to more effective detection of early-stage disease.
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Affiliation(s)
- Aesun Shin
- Department of Preventive MedicineSeoul National University College of MedicineSeoulKorea,Cancer Research InstituteSeoul National University College of MedicineSeoulKorea
| | - Young‐Joo Won
- Cancer Registration and Statistics BranchNational Cancer CenterGoyangGyeonggi‐doKorea
| | - Hye‐Kyung Jung
- Department of Internal Medicine, College of MedicineEwha Womans UniversitySeoulKorea
| | - Hyun‐Joo Kong
- Cancer Registration and Statistics BranchNational Cancer CenterGoyangGyeonggi‐doKorea
| | - Kyu‐Won Jung
- Cancer Registration and Statistics BranchNational Cancer CenterGoyangGyeonggi‐doKorea
| | - Chang‐Mo Oh
- Cancer Registration and Statistics BranchNational Cancer CenterGoyangGyeonggi‐doKorea,Department of Preventive MedicineKyunghee University College of MedicineSeoulKorea
| | - Sunho Choe
- Department of Preventive MedicineSeoul National University College of MedicineSeoulKorea
| | - Jihyun Lee
- Department of Internal Medicine, College of MedicineEwha Womans UniversitySeoulKorea
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Harris-Tryon T, Gattu S, Propheter D, Kuang Z, Bel S, Ruhn K, Jo J, Zouboulis C, Kong H, Segre J, Hooper L. 945 Resistin-like molecule α provides vitamin A-dependent antimicrobial protection of the skin. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.957] [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: 10/17/2022]
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Kobayashi T, Kim D, Voisin B, Doebel T, Truong A, Lee J, Jo J, Kennedy E, Kong H, Nagao K. 916 Skin resident innate lymphoid cells play an integral role in homeostatic regulation of sebaceous glands via TNF/Lymphotoxin receptor signaling to maintain microbial equilibrium. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.928] [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: 10/17/2022]
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Kearns M, Miller S, Kong H, Cheung A, Seidman M, Boyd J. OLIGONUCLEOTIDE-BASED PRECONDITIONING OF DCD CARDIAC DONORS AND ITS IMPACT ON NOVEL BIOMARKERS ASSOCIATED WITH CARDIAC VIABILITY. Can J Cardiol 2017. [DOI: 10.1016/j.cjca.2017.07.023] [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] Open
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Kobayashi T, Truong A, Shih H, Doebel T, Voisin B, Woodring T, Sohn S, Kennedy E, Jo J, Moro K, Leonard W, Kong H, Nagao K. 604 Spatial heterogeneity and functional diversity of innate lymphoid cells in the skin. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.02.626] [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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36
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Woodring T, O'Sullivan-Coyne G, Chen A, Kong H. 307 Dermatologic toxicities associated with chronic gamma-secretase inhibitor treatment for desmoid tumor. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.02.323] [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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37
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Byrd A, Deming C, Cassidy S, Harrison O, Ng W, Conlan S, Belkaid Y, Segre J, Kong H. 625 Differential diversity of staphylococcal strains shapes cutaneous response in atopic dermatitis. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.02.647] [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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Li N, Xie WP, Kong H, Min R, Hu CM, Zhou XB, Lu ZM, Ji XH, Wang H. Enrichment of regulatory T-cells in blood of patients with multidrug-resistant tuberculosis. Int J Tuberc Lung Dis 2016; 19:1230-8. [PMID: 26459539 DOI: 10.5588/ijtld.15.0148] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVE To measure the percentage of regulatory T-cells (Treg) and the expression of signalling molecules in these cells from the peripheral blood of patients with multidrug-resistant tuberculosis (MDR-TB). DESIGN Patients with drug-susceptible tuberculosis (S-TB), MDR-TB and healthy controls (HCs) were recruited into the study. Levels of CD4(+)CD25(+)Foxp3(+) Treg cells from peripheral blood, and programmed death-1 (PD-1), cytotoxic T lymphocyte-associated antigen-4 (CTLA-4) and inducible costimulatory (ICOS) molecule expression in the cells were measured using flow cytometry. Suppression mediated by Treg cells was assessed in carboxyfluorescein succinimidyl ester (CFSE) based suppression assays with autologous CD4(+)CD25(-) T-effector (Teff) cells. RESULTS Presence of Mycobacterium tuberculosis resulted in a higher proportion of Treg cells in S-TB patients than in HCs, and even higher levels in MDR-TB patients. Moreover, Treg cells in MDR-TB patients constitutively expressed high-level PD-1, CTLA-4 and ICOS. In addition, when cultured with activated CD4(+)CD25(-) Teff cells, Treg cells potently suppressed proliferation of Teff cells. CONCLUSIONS The high level of Treg cells found in the peripheral blood of tuberculosis patients may partly explain the poor immune response against M. tuberculosis, and could be a marker of MDR-TB.
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Affiliation(s)
- N Li
- Department of Respiratory Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - W-P Xie
- Department of Respiratory Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - H Kong
- Department of Respiratory Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - R Min
- Department of Respiratory Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - C-M Hu
- Department of Respiratory Medicine, Nanjing Chest Hospital, Nanjing, China
| | - X-B Zhou
- Department of Microbiology and Immunology, Nanjing Medical University, Nanjing, China
| | - Z-M Lu
- Department of Microbiology and Immunology, Nanjing Medical University, Nanjing, China
| | - X-H Ji
- Department of Microbiology and Immunology, Nanjing Medical University, Nanjing, China
| | - H Wang
- Department of Respiratory Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
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Ge Y, Kong H. [Correlation studies of specific immune indexes in vitro testing and noninvasive fungalsinusitis]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 30:513-515. [PMID: 29871057 DOI: 10.13201/j.issn.1001-1781.2016.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Indexed: 06/08/2023]
Abstract
Objective:Through the vitro testing of the specific immune globulin, exploring the relationship between the immune index and noninvasive fungal sinusitis, to provide theoretical support for its pathogenesis, subtype classification criterion and perioperative treatment. Method:After retrospectively analyzed 33 patients of NIFS, including FB 16 cases, and AFS 17cases, we got test and analysis of serum specific row of IgE and IgG, total IgE and count of blood eosinophils. Result:①Two groups of patients with eosinophilia positive rate and serum total IgE positive rate have significant differences (χ²=4.661, P<0.05 and χ²=7.127, P<0.01, respectively); ②Total IgE for patients of FB classified mainly in lever 1 (81.25%) and patients of AFS classified mainly in level 2 (41.18%), the difference was statistically significant (Z=-3.189, P<0.01); ③Patients of FB with serum sIgE classified mainly in lever 0 (50%), and patients of AFS mainly in level 2 (47.06%), there was no statistically significant difference between them (Z=-0.655, P>0.05); ④Patients of FB with serum sIgG classified mainly in lever 0 (56.25%), while patients ofAFS mainly at level 1 and 3 (the same 29.41%), there was no statistically significant difference between the two (Z=-1.377, P>0.05). Conclusion:①NIFS pathogenesis is various, not simple for fungal infection causes. Specific allergic constitution NIFS plays an important role in development of pathogenesis; ②In different specific allergic constitution in development of pathogenesis, pathogenic processes of NIFS are different, divided into: FB and AFS subtypes; ③Detection of sIgE, sIgG, total IgE, acidophil in the process of sinusitis and nasal polyps can be used as an auxiliary examination, to provide guidance for clinical treatment.
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Affiliation(s)
- Y Ge
- Dalian Medical University, Dalian, 116027, China
| | - H Kong
- Department of Otorhinolaryngology, the Second Affiliated Hospital of Dalian Medical University
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Chen Y, Chen X, Yu F, Wu M, Wang R, Zheng S, Han D, Yang Q, Kong H, Zhou F, Zhu J, Yao H, Zhou W, Li L. Serology, virulence, antimicrobial susceptibility and molecular characteristics of clinical Vibrio parahaemolyticus strains circulating in southeastern China from 2009 to 2013. Clin Microbiol Infect 2015; 22:258.e9-16. [PMID: 26597222 DOI: 10.1016/j.cmi.2015.11.003] [Citation(s) in RCA: 27] [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] [Subscribe] [Scholar Register] [Received: 07/26/2015] [Revised: 10/16/2015] [Accepted: 11/05/2015] [Indexed: 01/22/2023]
Abstract
Vibrio parahaemolyticus is a leading cause of food-borne diarrhoea in coastal countries. Although V. parahaemolyticus cases have been reported since 1950, they have been poorly documented. From July 2009 to June 2013, we collected 6951 faecal specimens for pathogen detection; V. parahaemolyticus strains were isolated from 563 specimens (8.1%). We then analysed the characteristics of the 501 V. parahaemolyticus strains that were isolated as the sole pathogen. Twenty-one serotypes were identified among these strains; O3:K6 was the most common serotype (65.1%), followed by O4:K8, O4:K68 and O1:K36. One strain of the O4:K18 serotype was isolated from clinical patients for the first time. Pandemic O3:K6 clones were predominant and accounted for 69.1% of all of the pandemic strains. This is the first report of one strain expressing the O3:K8 serotype with a pandemic genotype. The presence of the haemolysin gene tdh (93.0%) was the key characteristic of the virulent strains; however, a few strains carried the trh gene. We also confirmed the presence of the type III secretion system 2 (T3SS2) genes in all of the pathogenic strains. Subsequent multilocus sequence typing split the isolates into 16 sequence types (STs), with ST3 and ST88 as the most prevalent in southeastern China. Most isolates were sensitive to common antimicrobial agents, apart from ampicillin. However, the resistance rate to ampicillin has apparently increased in this area. In conclusion, our results indicate that pandemic O3:K6 V. parahaemolyticus isolates are predominant in southeastern China, and additional surveillance should be conducted to facilitate control of the transmission of this pathogen.
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Affiliation(s)
- Y Chen
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Centre for Diagnosis and Treatment of Infectious Diseases, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - X Chen
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Centre for Diagnosis and Treatment of Infectious Diseases, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - F Yu
- Center of Clinical Laboratory, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - M Wu
- Center of Clinical Laboratory, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - R Wang
- Center of Clinical Laboratory, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - S Zheng
- Center of Clinical Laboratory, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - D Han
- Department of Clinical Laboratory, Northern Jiangsu People's Hospital, Yangzhou, Jiangsu, China
| | - Q Yang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Centre for Diagnosis and Treatment of Infectious Diseases, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - H Kong
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Centre for Diagnosis and Treatment of Infectious Diseases, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - F Zhou
- Department of Clinical Laboratory, the Beilun People's Hospital, Ningbo, Zhejiang, China
| | - J Zhu
- Department of Clinical Laboratory, the Quzhou People's Hospital, Quzhou, Zhejiang, China
| | - H Yao
- Department of Clinical Laboratory, the Huzhou Central Hospital, Huzhou, Zhejiang, China
| | - W Zhou
- Department of Clinical Laboratory, the Huzhou Central Hospital, Huzhou, Zhejiang, China
| | - L Li
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Centre for Diagnosis and Treatment of Infectious Diseases, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China.
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Wang YL, Kong H, Xie WP, Wang H. Association of vitamin D-binding protein variants with chronic obstructive pulmonary disease: a meta-analysis. Genet Mol Res 2015; 14:10774-85. [PMID: 26400306 DOI: 10.4238/2015.september.9.16] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Gene polymorphism of vitamin D-binding protein (VDBP) correlates with chronic obstructive pulmonary disease (COPD), but the results remain inconclusive. We aimed to explore the association between VDBP gene polymorphism and COPD. We searched MEDLINE, Embase, Web of Science, and China National Knowledge Infrastructure for publications addressing the association between VDBP gene polymorphism and COPD. After qualitative evaluation, randomized controlled trials were pooled using either a fixed- or a random-effect model depending upon the degree of heterogeneity. Eleven studies with 3144 subjects were included. The genotype group-specific component (GC)*1F-1F was significantly associated with COPD in Asians [odds ratio (OR) = 1.73, 95% confidence interval (CI) = 1.07-2.81, P = 0.03], but not in Caucasians (OR = 1.44, 95%CI = 0.57-3.66, P = 0.45). A protective effect of GC*1F-1S was observed in Asians (OR = 0.70, 95%CI = 0.55-0.89, P = 0.003) but not in Caucasians (OR = 0.93, 95%CI = 0.69-1.24, P = 0.61). There was no association of GC*1S-1S, GC*2-1S and GC*1F-2 with COPD. As for alleles, GC*1F was a risk factor, whereas GC*1S was protective against COPD in Asians; GC*2 was not protective. The genotype GC*1F-1F or allele GC*1F was associated with increased susceptibility to COPD in Asians. No protective effect of genotype GC*2-2 against COPD was found. The protective effects of GC*1F-1S and GC*1S were observed in Asians but not in Caucasians. The VDBP gene polymorphism could be a potential marker for screening of COPD.
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Affiliation(s)
- Y L Wang
- Department of Respiratory Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - H Kong
- Department of Respiratory Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - W P Xie
- Department of Respiratory Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - H Wang
- Department of Respiratory Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
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Zhu R, Bi L, Kong H, Tilley S, Wang H, Xie W. Meta-analytical association between angiotensin-converting enzyme gene polymorphisms and sarcoidosis risk. Genet Mol Res 2015; 14:3590-600. [DOI: 10.4238/2015.april.17.8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Kong H, Wang Y, Zeng X, Zhu Q, Xie W, Dai S. Involvement of NLRP3 inflammasome in rituximab-induced interstitial lung disease: a case report. J Clin Pharm Ther 2014; 39:691-4. [PMID: 25131433 DOI: 10.1111/jcpt.12198] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [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: 07/04/2014] [Accepted: 07/16/2014] [Indexed: 01/20/2023]
Abstract
WHAT IS KNOWN AND OBJECTIVE Rituximab is a chimeric anti-CD20 IgG1 monoclonal antibody for the treatment of various forms of lymphoma and haematological autoimmune diseases. Interstitial lung disease is a rare but lethal pulmonary toxicity of rituximab. Nod-like receptor pyrin domain-containing protein 3 (NLRP3) inflammasome is a molecular platform activated upon signs of cellular 'danger' to trigger the maturation of pro-inflammatory cytokines. We report the first case of rituximab-induced interstitial lung disease (R-ILD) with NLRP3 inflammasome activation in the lung. CASE SUMMARY A 30-year-old male patient diagnosed with idiopathic thrombocytopenic purpura (ITP) was treated with four cycles of rituximab in one month. Three weeks after last rituximab administration, he developed progressive dyspnoea associated with respiratory failure, which was diagnosed as R-ILD. The patient showed a good response to steroid treatment, and lung biopsy was performed 5 days after the treatment. Immunohistopathological studies of lung specimens showed high expressions of inflammasome components NLRP3, apoptosis-associated speck-like protein containing a caspase recruitment domain (ASC) and caspase-1 in lung interstitium with a heavy infiltration of CD19-positive cells. The levels of inflammasome-related cytokines IL-1β and IL-18 in the serum were declined during the therapy. WHAT IS NEW AND CONCLUSIONS This is the first report confirmed the role of NLRP3 inflammasome in pulmonary toxicity of rituximab. Inhibited activation of NLRP3 inflammasome in lung by steroid treatment could reverse R-ILD and block subsequent lung fibrosis. This result could open a new sight into the pathogenesis and provide a new target for the treatment of R-ILD.
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Affiliation(s)
- H Kong
- Department of Respiratory Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
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Li X, Jiang R, Kong H, Shu Y, Li Q, Hua W. Fasting Blood Glucose at Admission and Survival in Patients with Dilated Cardiomyopathy: a Single-center Cohort Study. Exp Clin Endocrinol Diabetes 2014; 122:457-62. [PMID: 24918531 DOI: 10.1055/s-0034-1376966] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [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: 10/25/2022]
Affiliation(s)
- X. Li
- Department of Cardiology, Sichuan Academy of Medical Sciences and Sichuan Provincial People’s Hospital, Chengdu, Sichuan, China
| | - R. Jiang
- Department of Cardiology, Sichuan Academy of Medical Sciences and Sichuan Provincial People’s Hospital, Chengdu, Sichuan, China
| | - H. Kong
- Department of Cardiology, Sichuan Academy of Medical Sciences and Sichuan Provincial People’s Hospital, Chengdu, Sichuan, China
| | - Y. Shu
- Department of Cardiology, Sichuan Academy of Medical Sciences and Sichuan Provincial People’s Hospital, Chengdu, Sichuan, China
| | - Q. Li
- Department of Cardiology, Sichuan Academy of Medical Sciences and Sichuan Provincial People’s Hospital, Chengdu, Sichuan, China
| | - W. Hua
- Cardiac Arrhythmia Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Liang B, Li YH, Kong H. Serum paraoxonase, arylesterase activities and oxidative status in patients with insomnia. Eur Rev Med Pharmacol Sci 2013; 17:2517-2522. [PMID: 24089233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
AIM The aim of this study was to investigate serum paraoxonase (PON) activity, arylesterase (ARE) activity, total antioxidant status (TAS), total oxidant status (TOS) and oxidative stress index (OSI) levels in patients with insomnia and to determine whether there was a relationship between oxidative stress and insomnia. PATIENTS AND METHODS A total of 29 insomniacs and 25 healthy controls were recruited in this study. Serum PON and ARE activities, TAS and TOS level were determined, and OSI were calculated. RESULTS Patients with insomnia had lower PON and ARE activities as compared to healthy controls (PON: 82.0±30.0 U/L vs. 193.5±58.4 U/L, p < 0.001; ARE: 143.0±26.7 U/L vs. 175.0±27.1 U/L, p < 0.001; respectively). Serum TAS was lower, while TOS and OSI were higher in the insomnia group than in the control group (TAS: 1.13±0.29 mmol Trolox equivalent/L vs. 1.70±0.35 mmol Trolox equivalent /L, p < 0.001; TOS: 18.68±5.03 µmol H2O2 equivalent/L vs. 10.92±2.21 µmol H2O2 equivalent/L, p < 0.001; OSI: 1.76±0.74 vs. 0.68±0.23, p < 0.001; respectively). CONCLUSIONS Patients with insomnia have increased systemic oxidative stress and reduced levels of serum antioxidant enzymes. Oxidative stress appears to be an underlying condition associated with insomnia.
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Affiliation(s)
- B Liang
- High Vocational Technological College, China Medical University, Shenyang, China.
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Huang Y, Bai Y, Wang Y, Kong H. Allelopathic effects of the extracts from an invasive species Solidago canadensis
L. on Microcystis aeruginosa. Lett Appl Microbiol 2013; 57:451-8. [DOI: 10.1111/lam.12133] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2013] [Revised: 07/08/2013] [Accepted: 07/08/2013] [Indexed: 11/30/2022]
Affiliation(s)
- Y. Huang
- School of Environmental Science and Engineering; Shanghai Jiao Tong University; Shanghai China
| | - Y. Bai
- School of Environmental Science and Engineering; Shanghai Jiao Tong University; Shanghai China
| | - Y. Wang
- School of Public Health; Shanghai Jiao Tong University; Shanghai China
| | - H. Kong
- School of Environmental Science and Engineering; Shanghai Jiao Tong University; Shanghai China
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Chen Y, Chen X, Zheng S, Yu F, Kong H, Yang Q, Cui D, Chen N, Lou B, Li X, Tian L, Yang X, Xie G, Dong Y, Qin Z, Han D, Wang Y, Zhang W, Tang YW, Li L. Serotypes, genotypes and antimicrobial resistance patterns of human diarrhoeagenic Escherichia coli isolates circulating in southeastern China. Clin Microbiol Infect 2013; 20:52-8. [PMID: 23521436 DOI: 10.1111/1469-0691.12188] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Revised: 02/03/2013] [Accepted: 02/03/2013] [Indexed: 11/30/2022]
Abstract
Diarrhoeagenic Escherichia coli (DEC) infection is a major health problem in developing countries. The prevalence and characteristics of DEC have not been thoroughly investigated in China. Consecutive faecal specimens from outpatients with acute diarrhoea in nine sentinel hospitals in southeastern China were collected from July 2009 to June 2011. Bacterial and viral pathogens were detected by culture and RT-PCR, respectively. DEC isolates were further classified into five pathotypes using multiplex PCR. The O/H serotypes, sequence types (STs) and antimicrobial susceptibility profiles of the DEC isolates were determined. A total of 2466 faecal specimens were collected, from which 347 (14.1%) DEC isolates were isolated. DEC was the dominant bacterial pathogen detected. The DEC isolates included 217 EAEC, 62 ETEC, 52 EPEC, 14 STEC, one EIEC and one EAEC/ETEC. O45 (6.6%) was the predominant serotype. Genotypic analysis revealed that the major genotype was ST complex 10 (87, 25.6%). Isolates belonging to the serogroups or genotypes of O6, O25, O159, ST48, ST218, ST94 and ST1491 were highly susceptible to the majority of antimicrobials. In contrast, isolates belonging to O45, O15, O1, O169, ST38, ST226, ST69, ST31, ST93, ST394 and ST648 were highly resistant to the majority of antimicrobials. DEC accounted for the majority of bacterial pathogens causing acute diarrhoea in southeastern China, and it is therefore necessary to test for all DEC, not only the EHEC O157:H7. Some serogroups or genotypes of DEC were highly resistant to the majority of antimicrobials. DEC surveillance should be emphasized.
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Affiliation(s)
- Y Chen
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China; Center of Clinical Laboratory, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
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Yan Y, Kong H, Wu EJ, Newman AH, Xu M. Dopamine D3 receptors regulate reconsolidation of cocaine memory. Neuroscience 2013; 241:32-40. [PMID: 23506736 DOI: 10.1016/j.neuroscience.2013.03.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2013] [Revised: 03/01/2013] [Accepted: 03/07/2013] [Indexed: 12/12/2022]
Abstract
Memories of learned associations between the rewarding properties of drugs of abuse and environmental cues contribute to craving and relapse in humans. Disruption of reconsolidation dampens or even erases previous memories. Dopamine (DA) mediates the acquisition of reward memory and drugs of abuse can pathologically change related neuronal circuits in the mesolimbic DA system. Previous studies showed that DA D3 receptors are involved in cocaine-conditioned place preference (CPP) and reinstatement of cocaine-seeking behavior. However, the role of D3 receptors in reconsolidation of cocaine-induced reward memory remains unclear. In the present study, we combined genetic and pharmacological approaches to investigate the role of D3 receptors in reconsolidation of cocaine-induced CPP. We found that the mutation of the D3 receptor gene weakened reconsolidation of cocaine-induced CPP in mice triggered by a 3-min (min) retrieval. Furthermore, treatment of a selective D3 receptor antagonist PG01037 immediately following the 3-min retrieval disrupted reconsolidation of cocaine-induced CPP in wild-type mice and such disruption remained at least 1 week after the 3-min retrieval. These results suggest that D3 receptors play a key role in reconsolidation of cocaine-induced CPP in mice, and that pharmacological blockade of these receptors may be therapeutic for the treatment of cocaine craving and relapse in clinical settings.
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Affiliation(s)
- Y Yan
- Department of Anesthesia and Critical Care, The University of Chicago, Chicago, IL, USA
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Zhou T, Li G, Cao B, Liu L, Cheng Q, Kong H, Shan C, Huang X, Chen J, Gao N. Downregulation of Mcl-1 through inhibition of translation contributes to benzyl isothiocyanate-induced cell cycle arrest and apoptosis in human leukemia cells. Cell Death Dis 2013; 4:e515. [PMID: 23449451 PMCID: PMC3734843 DOI: 10.1038/cddis.2013.41] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [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] [Indexed: 01/22/2023]
Abstract
Benzyl isothiocyanate (BITC) is one of the compounds of ITCs' family that has attracted a great deal of interest because of its ability to exhibit anticancer activity. In this study, we investigated the effects of BITC on cell cycle arrest and apoptosis in human leukemia cell lines, primary leukemia cells, and nude mice Jurkat xenograft. Exposure of Jurkat cells to BITC resulted in dose- and time-dependent increase in apoptosis, caspase activation, cytochrome c release, nuclear apoptosis-inducing factor (AIF) accumulation, Bcl2-associated X protein (Bax) translocation, and myeloid cell leukemia-1 (Mcl-1) downregulation. Treatment with these cells also resulted in cell cycle arrest at the G2/M phase. The G2/M-arrested cells are more sensitive to undergoing Mcl-1 downregulation and apoptosis mediated by BITC. BITC downregulates Mcl-1 expression through inhibition of translation, rather than through a transcriptional, post-translational, or caspase-dependent mechanism. Dephosphorylation of eukaryotic initiation factor 4G could contribute to the inhibition of Mcl-1 translation mediated by BITC. Furthermore, ectopic expression of Mcl-1 substantially attenuates BITC-mediated lethality in these cells, whereas knockdown of Mcl-1 through small interfering RNA significantly enhances BITC-mediated lethality. Finally, administration of BITC markedly inhibited tumor growth and induced apoptosis in Jurkat xenograft model in association with the downregulation of Mcl-1. Taken together, these findings represent a novel mechanism by which agents targeting Mcl-1 potentiate BITC lethality in transformed and primary human leukemia cells and inhibitory activity of tumor growth of Jurkat xenograft model.
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Affiliation(s)
- T Zhou
- Department of Pharmacognosy, School of Pharmacy, 3rd Military Medical University, Chongqing, China
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