1
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Zhang SQ, Pan SM, Lai SZ, Situ HJ, Liu J, Dai WJ, Liang SX, Zhou LQ, Lu QQ, Ke PF, Zhang F, Chen HB, Li JC. Novel Plasma Proteomic Biomarkers for Early Identification of Induction Chemotherapy Beneficiaries in Locoregionally Advanced Nasopharyngeal Carcinoma. Front Oncol 2022; 12:889516. [PMID: 35847896 PMCID: PMC9279567 DOI: 10.3389/fonc.2022.889516] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 06/02/2022] [Indexed: 02/05/2023] Open
Abstract
Background Induction chemotherapy (IC) can alleviate locoregionally advanced nasopharyngeal carcinoma (LA-NPC), but effectiveness differs between patients, toxicity is problematic, and effective blood-based IC efficacy predictors are lacking. Here, we aimed to identify biomarkers for early identification of IC beneficiaries. Methods Sixty-four pairs of matched plasma samples collected before and after IC from LA-NPC patients including 34 responders and 30 non-responders, as well as 50 plasma samples of healthy individuals, were tested using data-independent acquisition mass spectrometry. The proteins associated with clinical traits or IC benefits were investigated by weighted gene co-expression network analysis (WGCNA) and soft cluster analysis. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes functional annotations were performed to determine the potential function of the identified proteins. The area under the receiver operating characteristic curve (AUC) was used to evaluate the performance of candidate biomarkers in predicting IC beneficiaries. Results Compared with healthy individuals, 1027 differentially expressed proteins (DEPs) were found in the plasma of LA-NPC patients. Based on feedback from IC outcomes, 463 DEPs were identified in the pre-IC plasma between responders and non-responders. A total of 1212 DEPs represented the proteomic changes before and after IC in responders, while 276 DEPs were identified in post-IC plasma between responders and non-responders. WGCNA identified nine protein co-expression modules correlated with clinical traits. Soft cluster analysis identified four IC benefits-related protein clusters. Functional enrichment analysis showed that these proteins may play a role in IC via immunity, complement, coagulation, glycosaminoglycan and serine. Four proteins differentially expressed in all group comparisons, paraoxonase/arylesterase 1 (PON1), insulin-like growth factor-binding protein 3 (IGFBP-3), rheumatoid factor D5 light chain (v-kappa-3) and RNA helicase (DDX55), were associated with clinical traits or IC benefits. A four-protein model accurately identified potential IC beneficiaries (AUC=0.95) while diagnosing LA-NPC (AUC=0.92), and the prediction performance was verified using the models to confirm the effective IC (AUC=0.97) and evaluate IC outcome (AUC=0.94). Conclusion The plasma protein profiles among IC responders and non-responders were different. PON1, IGFBP3, v-kappa-3 and DDX55 could serve as potential biomarkers for early identification of IC beneficiaries for individualised treatment of LA-NPC.
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Affiliation(s)
- Shan-Qiang Zhang
- Medical Research Center, Yuebei People’s Hospital, Shantou University Medical College, Shaoguan, China
| | - Su-Ming Pan
- Department of Radiation Oncology, Yuebei People’s Hospital, Shantou University Medical College, Shaoguan, China
| | - Shu-Zhen Lai
- Department of Radiation Oncology, Yuebei People’s Hospital, Shantou University Medical College, Shaoguan, China
| | - Hui-Jing Situ
- Department of Radiation Oncology, Yuebei People’s Hospital, Shantou University Medical College, Shaoguan, China
| | - Jun Liu
- Medical Research Center, Yuebei People’s Hospital, Shantou University Medical College, Shaoguan, China
| | - Wen-Jie Dai
- Medical Research Center, Yuebei People’s Hospital, Shantou University Medical College, Shaoguan, China
| | - Si-Xian Liang
- Medical Research Center, Yuebei People’s Hospital, Shantou University Medical College, Shaoguan, China
| | - Li-Qing Zhou
- Medical Research Center, Yuebei People’s Hospital, Shantou University Medical College, Shaoguan, China
| | - Qi-Qi Lu
- Medical Research Center, Yuebei People’s Hospital, Shantou University Medical College, Shaoguan, China
| | - Pei-Feng Ke
- Medical Research Center, Yuebei People’s Hospital, Shantou University Medical College, Shaoguan, China
| | - Fan Zhang
- Medical Research Center, Yuebei People’s Hospital, Shantou University Medical College, Shaoguan, China
| | - Hai-Bin Chen
- Department of Histology and Embryology, Shantou University Medical College, Shantou, China
| | - Ji-Cheng Li
- Medical Research Center, Yuebei People’s Hospital, Shantou University Medical College, Shaoguan, China
- Department of Histology and Embryology, Shantou University Medical College, Shantou, China
- Institute of Cell Biology, Zhejiang University School of Medicine, Hangzhou, China
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2
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Yuan QQ, Xiao SX, Farouk O, Du YT, Sheybani F, Tan QT, Akbulut S, Cetin K, Alikhassi A, Yaghan RJ, Durur-Subasi I, Altintoprak F, Eom TI, Alper F, Hasbahceci M, Martínez-Ramos D, Oztekin PS, Kwong A, Pluguez-Turull CW, Brownson KE, Chandanwale S, Habibi M, Lan LY, Zhou R, Zeng XT, Bai J, Bai JW, Chen QR, Chen X, Zha XM, Dai WJ, Dai ZJ, Feng QY, Gao QJ, Gao RF, Han BS, Hou JX, Hou W, Liao HY, Luo H, Liu ZR, Lu JH, Luo B, Ma XP, Qian J, Qin JY, Wei W, Wei G, Xu LY, Xue HC, Yang HW, Yang WG, Zhang CJ, Zhang F, Zhang GX, Zhang SK, Zhang SQ, Zhang YQ, Zhang YP, Zhang SC, Zhao DW, Zheng XM, Zheng LW, Xu GR, Zhou WB, Wu GS. Management of granulomatous lobular mastitis: an international multidisciplinary consensus (2021 edition). Mil Med Res 2022; 9:20. [PMID: 35473758 PMCID: PMC9040252 DOI: 10.1186/s40779-022-00380-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 04/07/2022] [Indexed: 02/07/2023] Open
Abstract
Granulomatous lobular mastitis (GLM) is a rare and chronic benign inflammatory disease of the breast. Difficulties exist in the management of GLM for many front-line surgeons and medical specialists who care for patients with inflammatory disorders of the breast. This consensus is summarized to establish evidence-based recommendations for the management of GLM. Literature was reviewed using PubMed from January 1, 1971 to July 31, 2020. Sixty-six international experienced multidisciplinary experts from 11 countries or regions were invited to review the evidence. Levels of evidence were determined using the American College of Physicians grading system, and recommendations were discussed until consensus. Experts discussed and concluded 30 recommendations on historical definitions, etiology and predisposing factors, diagnosis criteria, treatment, clinical stages, relapse and recurrence of GLM. GLM was recommended as a widely accepted definition. In addition, this consensus introduced a new clinical stages and management algorithm for GLM to provide individual treatment strategies. In conclusion, diagnosis of GLM depends on a combination of history, clinical manifestations, imaging examinations, laboratory examinations and pathology. The approach to treatment of GLM should be applied according to the different clinical stage of GLM. This evidence-based consensus would be valuable to assist front-line surgeons and medical specialists in the optimal management of GLM.
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Affiliation(s)
- Qian-Qian Yuan
- grid.413247.70000 0004 1808 0969Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, 430071 China
| | - Shu-Xuan Xiao
- grid.170205.10000 0004 1936 7822Department of Pathology, University of Chicago Pritzker School of Medicine, Chicago, IL 60637 USA
| | - Omar Farouk
- grid.10251.370000000103426662Department of Surgical Oncology and Breast Surgery, Oncology Center, Faculty of Medicine, Mansoura University, Mansoura, 35516 Egypt
| | - Yu-Tang Du
- grid.24695.3c0000 0001 1431 9176Department of Breast Surgery, Beijing University of Chinese Medicine, Beijing, 100700 China
| | - Fereshte Sheybani
- grid.411583.a0000 0001 2198 6209Department of Infectious Diseases and Tropical Medicine, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, 9177899191 Iran
| | - Qing Ting Tan
- grid.414963.d0000 0000 8958 3388Breast Department, KK Women’s and Children’s Hospital, 100 Bukit Timah Road, Singapore, 229899 Singapore
| | - Sami Akbulut
- grid.411650.70000 0001 0024 1937Department of Surgery, Department of Public Health, Department of Biostatistics, Bioinformatics and Medical Informatics, Inonu University Faculty of Medicine, 44280 Malatya, Turkey
| | - Kenan Cetin
- grid.412364.60000 0001 0680 7807Department of General Surgery, Faculty of Medicine, Çanakkale Onsekiz Mart University, 17020 Çanakkale, Turkey
| | - Afsaneh Alikhassi
- grid.411705.60000 0001 0166 0922Department of Radiology, Cancer Institute, Imam Khomeini Hospital, Tehran University of Medical Sciences, Tehran, 1419733141 Iran
| | - Rami Jalal Yaghan
- grid.411424.60000 0001 0440 9653Department of Surgery, College of Medicine and Medical Sciences, Arabian Gulf University-Bahrain, Manama, 26671 Bahrain
| | - Irmak Durur-Subasi
- grid.411781.a0000 0004 0471 9346Department of Radiology, International Faculty of Medicine, Istanbul Medipol University, 34810 Istanbul, Turkey
| | - Fatih Altintoprak
- grid.49746.380000 0001 0682 3030Department of General Surgery, Faculty of Medicine, Sakarya University, 54050 Sakarya, Turkey
| | - Tae Ik Eom
- Department of Surgery, HiU Clinic, 170, Gwongwang-ro, Paldal-gu, Suwon, 16488 Korea
| | - Fatih Alper
- grid.411445.10000 0001 0775 759XDepartment of Radiology, Faculty of Medicine, Ataturk University, 25240 Erzurum, Turkey
| | - Mustafa Hasbahceci
- Academic Support and Education Center, Hırkai Serif District, Kececi Cesmesi Str, Doktorlar Building, B/7, 34091 Istanbul, Turkey
| | - David Martínez-Ramos
- grid.470634.2Department of General and Digestive Surgery, Hospital General Castellon, Avda Benicassim S/N, 12812004 Castellón, Spain
| | - Pelin Seher Oztekin
- grid.413783.a0000 0004 0642 6432Radiology Department, Ankara Training and Research Hospital, 305018 Ankara, Turkey
| | - Ava Kwong
- grid.440671.00000 0004 5373 5131Department of Surgery, The University of Hong Kong, China; The University of Hong Kong-Shenzhen Hospital, Shenzhen, 518053 China
| | - Cedric W. Pluguez-Turull
- grid.418456.a0000 0004 0414 313XUniversity of Miami Health System and Miller School of Medicine, 1475 NW 12th Avenue, Miami, FL 33136 USA
| | - Kirstyn E. Brownson
- grid.223827.e0000 0001 2193 0096Department of Surgery, University of Utah, Huntsman Cancer Institute, Salt Lake City, UT 84112 USA
| | - Shirish Chandanwale
- grid.464654.10000 0004 1764 8110Department of Pathology, Dr D Y Patil Medical College Hospital and Research Centre, Pimpri, Pune, 603203 India
| | - Mehran Habibi
- Department of Surgery, Johns Hopkins Breast Center at Bayview Campus, 4940 Eastern Avenue, Rm. A-562, Baltimore, MD 21224 USA
| | - Liu-Yi Lan
- grid.413247.70000 0004 1808 0969Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, 430071 China
| | - Rui Zhou
- grid.413247.70000 0004 1808 0969Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, 430071 China
| | - Xian-Tao Zeng
- grid.413247.70000 0004 1808 0969Center for Evidence-Based and Translational Medicine, Zhongnan Hospital of Wuhan University, Wuhan, 430071 China
| | - Jiao Bai
- grid.413247.70000 0004 1808 0969Department of Diagnostic Ultrasound, Zhongnan Hospital of Wuhan University, Wuhan, 430071 China
| | - Jun-Wen Bai
- grid.413375.70000 0004 1757 7666Department of Surgery, Affiliated Hospital of Inner Mongolia Medical University, Hohhot, 010110 China
| | - Qiong-Rong Chen
- grid.49470.3e0000 0001 2331 6153Center for Pathology and Molecular Diagnostics, Wuhan University, Wuhan, 430071 China
| | - Xing Chen
- grid.415108.90000 0004 1757 9178Department of General Surgery, Fujian Provincial Hospital, Fuzhou, 350001 China
| | - Xiao-Ming Zha
- grid.412676.00000 0004 1799 0784The First Affiliated Hospital with Nanjing Medical University, Nanjing, 210029 China
| | - Wen-Jie Dai
- grid.412596.d0000 0004 1797 9737Key Laboratory of Hepatosplenic Surgery and the First Department of General Surgery, First Affiliated Hospital of Harbin Medical University, Harbin, 150007 China
| | - Zhi-Jun Dai
- grid.13402.340000 0004 1759 700XDepartment of Breast Surgery, Zhejiang University School of Medicine First Affiliated Hospital, Hangzhou, 310003 China
| | - Qin-Yu Feng
- grid.413247.70000 0004 1808 0969Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, 430071 China
| | - Qing-Jun Gao
- grid.452244.1Department of General Surgery, The Affiliated Hospital of Guizhou Medical University, Guiyang, 550004 China
| | - Run-Fang Gao
- grid.464423.3Department of General Surgery, Shanxi Provincial People’s Hospital, Taiyuan, 030012 China
| | - Bao-San Han
- grid.412987.10000 0004 0630 1330Department of Breast Surgery, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, 200092 China
| | - Jin-Xuan Hou
- grid.413247.70000 0004 1808 0969Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, 430071 China
| | - Wei Hou
- Department of Cardiothoracic Surgery, Zaoyang People’s Hospital, Zaoyang, 441299 Hubei China
| | - Hai-Ying Liao
- grid.452702.60000 0004 1804 3009Department of Thyroid and Breast Surgery, The Second Hospital of Hebei Medical University, Shijiazhuang, 050004 China
| | - Hong Luo
- grid.411634.50000 0004 0632 4559Department of General Surgery, Guangshan County People’s Hospital, Guangshan County, Xinxiang, 465499 Henan China
| | - Zheng-Ren Liu
- grid.412604.50000 0004 1758 4073Department of Breast Surgery, First Affiliated Hospital of Nanchang University, Nanchang, 330006 China
| | - Jing-Hua Lu
- grid.9227.e0000000119573309Chinese Academy of Sciences, Beijing, 100045 China
| | - Bin Luo
- grid.12527.330000 0001 0662 3178Department of General Surgery, School of Clinical Medicine, Tsinghua University, Beijing Tsinghua Changgung Hospital, Beijing, 102218 China
| | - Xiao-Peng Ma
- grid.411395.b0000 0004 1757 0085Department of Breast and Thyroid Surgery, The First Affiliated Hospital of University of Science and Technology of China, Anhui Provincial Hospital, Hefei, 230001 China
| | - Jun Qian
- grid.414902.a0000 0004 1771 3912Department of Thyroid Surgery, First Affiliated Hospital of Kunming Medical University, Kunming, 650032 China
| | - Jian-Yong Qin
- Department of Oncology, Liwan Central Hospital of Guangzhou, Guangzhou, 510150 China
| | - Wei Wei
- grid.440601.70000 0004 1798 0578Department of Breast Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036 Guangdong China
| | - Gang Wei
- grid.413247.70000 0004 1808 0969Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, 430071 China
| | - Li-Ying Xu
- grid.413247.70000 0004 1808 0969Department of Computed Tomography, Zhongnan Hospital of Wuhan University, Wuhan, 430071 China
| | - Hui-Chao Xue
- grid.412990.70000 0004 1808 322XDepartment of General Surgery, Xinxiang Medical University First Affiliated Hospital, Xinxiang, 453100 Henan China
| | - Hua-Wei Yang
- grid.256607.00000 0004 1798 2653Department of Breast Surgery, Guangxi Medical University Cancer Hospital, Nanning, 530021 China
| | - Wei-Ge Yang
- grid.413087.90000 0004 1755 3939Department of General Surgery, Zhongshan Hospital Fudan University, Shanghai, 200032 China
| | - Chao-Jie Zhang
- grid.477407.70000 0004 1806 9292Department of Breast and Thyroid Surgery, Hunan Provincial People’s Hospital/The First Affiliated Hospital of Hunan Normal University, Changsha, 410005 China
| | - Fan Zhang
- grid.410726.60000 0004 1797 8419Department of Breast and Thyroid Surgery, Chongqing General Hospital, University of Chinese Academy of Sciences, Chongqing, 400013 China
| | - Guan-Xin Zhang
- Department of General Surgery, Qinghai Province People’s Hospital, Xining, 810007 China
| | - Shao-Kun Zhang
- grid.508137.80000 0004 4914 6107Department of Thyroid and Breast Surgery, Qingdao Women and Children’s Hospital, Qingdao, 266000 Shandong China
| | - Shu-Qun Zhang
- grid.43169.390000 0001 0599 1243Department of Oncology, Xi’an Jiaotong University Second Affiliated Hospital, Xi’an, 710004 China
| | - Ye-Qiang Zhang
- Department of Cardiothoracic Surgery, Zaoyang First People’s Hospital, Zaoyang, 441299 Hubei China
| | - Yue-Peng Zhang
- grid.413247.70000 0004 1808 0969Department of Diagnostic Ultrasound, Zhongnan Hospital of Wuhan University, Wuhan, 430071 China
| | - Sheng-Chu Zhang
- grid.508285.20000 0004 1757 7463Department of Thyroid and Breast Surgery, Yichang Central People’s Hospital, Yichang, 443003 Hubei China
| | - Dai-Wei Zhao
- grid.413458.f0000 0000 9330 9891Department of Thyroid Surgery, The Second Affiliated Hospital, Guizhou Medical University, Kaili, 556000 Guizhou China
| | - Xiang-Min Zheng
- grid.413810.fDepartment of General Surgery, Shanghai Changzheng Hospital, Shanghai, 200003 China
| | - Le-Wei Zheng
- grid.413247.70000 0004 1808 0969Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, 430071 China
| | - Gao-Ran Xu
- grid.413247.70000 0004 1808 0969Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, 430071 China
| | - Wen-Bo Zhou
- grid.452381.90000 0004 1779 2614Department of Surgery, Dongfeng General Hospital Affiliated with Hubei Medical College, Shiyan, 442001 Hubei China
| | - Gao-Song Wu
- grid.413247.70000 0004 1808 0969Department of Thyroid and Breast Surgery, Zhongnan Hospital of Wuhan University, Wuhan, 430071 China
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Liu J, Tang L, Lu Q, Yu Y, Xu QG, Zhang S, Chen YX, Dai WJ, Li JC. Plasma Quantitative Lipid Profiles: Identification of CarnitineC18:1-OH, CarnitineC18:2-OH and FFA (20:1) as Novel Biomarkers for Pre-warning and Prognosis in Acute Myocardial Infarction. Front Cardiovasc Med 2022; 9:848840. [PMID: 35479277 PMCID: PMC9037999 DOI: 10.3389/fcvm.2022.848840] [Citation(s) in RCA: 7] [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: 01/05/2022] [Accepted: 03/08/2022] [Indexed: 02/05/2023] Open
Abstract
This study was aimed to determine the association between potential plasma lipid biomarkers and early screening and prognosis of Acute myocardial infarction (AMI). In the present study, a total of 795 differentially expressed lipid metabolites were detected based on ultra-performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS). Out of these metabolites, 25 lipid metabolites were identified which showed specifical expression in the AMI group compared with the healthy control (HC) group and unstable angina (UA) group. Then, we applied the least absolute shrinkage and selection operator (LASSO) and support vector machine-recursive feature elimination (SVM-RFE) methods to obtain three lipid molecules, including CarnitineC18:1-OH, CarnitineC18:2-OH and FFA (20:1). The three lipid metabolites and the diagnostic model exhibited well predictive ability in discriminating between AMI patients and UA patients in both the discovery and validation sets with an area under the curve (AUC) of 0.9. Univariate and multivariate logistic regression analyses indicated that the three lipid metabolites may serve as potential biomarkers for diagnosing AMI. A subsequent 1-year follow-up analysis indicated that the three lipid biomarkers also had prominent performance in predicting re-admission of patients with AMI due to cardiovascular events. In summary, we used quantitative lipid technology to delineate the characteristics of lipid metabolism in patients with AMI, and identified potential early diagnosis biomarkers of AMI via machine learning approach.
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Affiliation(s)
- Jun Liu
- Medical Research Center and Department of Cardiology, Yue Bei People's Hospital, Shantou University Medical College, Shaoguan, China
| | - Liangqiu Tang
- Medical Research Center and Department of Cardiology, Yue Bei People's Hospital, Shantou University Medical College, Shaoguan, China
| | - Qiqi Lu
- Medical Research Center and Department of Cardiology, Yue Bei People's Hospital, Shantou University Medical College, Shaoguan, China
| | - Yi Yu
- Medical Research Center and Department of Cardiology, Yue Bei People's Hospital, Shantou University Medical College, Shaoguan, China
- The Central Laboratory, Yangjiang People's Hospital, Yangjiang, China
| | - Qiu-Gui Xu
- The Central Laboratory, Yangjiang People's Hospital, Yangjiang, China
| | - Shanqiang Zhang
- Medical Research Center and Department of Cardiology, Yue Bei People's Hospital, Shantou University Medical College, Shaoguan, China
| | - Yun-Xian Chen
- Medical Research Center and Department of Cardiology, Yue Bei People's Hospital, Shantou University Medical College, Shaoguan, China
| | - Wen-Jie Dai
- Medical Research Center and Department of Cardiology, Yue Bei People's Hospital, Shantou University Medical College, Shaoguan, China
| | - Ji-Cheng Li
- Medical Research Center and Department of Cardiology, Yue Bei People's Hospital, Shantou University Medical College, Shaoguan, China
- The Central Laboratory, Yangjiang People's Hospital, Yangjiang, China
- Department of Histology and Embryology, Shaoguan University School of Medicine, Shaoguan, China
- Institute of Cell Biology, Zhejiang University, Hangzhou, China
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Zhang SQ, Liu J, Chen HB, Dai WJ, Zhou LQ, Xie CW, Li JC. A novel three-microRNA signature for predicting survival in patients with nasopharyngeal carcinoma. J Dent Sci 2022; 17:377-388. [PMID: 35028061 PMCID: PMC8740092 DOI: 10.1016/j.jds.2021.08.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Revised: 08/13/2021] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND/PURPOSE Nasopharyngeal carcinoma (NPC) is a malignant neoplasm of the head and neck. This study aims to use integrated bioinformatics technologies to develop a predictive miRNA-signature correlated with the prognosis of NPC. MATERIALS AND METHODS Initially, the differentially expressed miRNAs (DEMs) in NPC were identified, and then DEMs related to the prognosis of NPC were further screened. Subsequently, the relatively important DEMs identified by random forest algorithm were used to construct a predictive signature by multivariate COX regression analysis. Moreover, PCA, Kaplan-Meier analysis, time-dependent ROC analysis, and univariate and multivariate COX regression analysis were performed to evaluate the ability of the signature in risk identification and prognosis prediction in NPC. RESULTS Hsa-miR-29c, hsa-miR-30e and hsa-miR-93 were selected from DEMs to construct a signature, and their abnormal expression was significantly associated with poor prognosis of NPC. The average AUC values of 1- to 5-year OS, DFS and DMFS predicted by the signature were all above 0.7, and showed better clinical independence than other indexes. In addition, 295 differentially expressed mRNAs could be used as potential target genes of the 3 DEMs. Among them, 56 differentially expressed mRNAs were related to PFS. GO and KEGG enrichment analysis indicated that the poor prognosis of NPC was related to the abnormality of chromosomes, cytokines, and chemokines. CONCLUSION We constructed a three-miRNA signature with good independent performance in predicting the prognosis for NPC. This study may lay the foundation for exploring new therapeutic targets and improving survival outcomes in NPC patients.
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Affiliation(s)
- Shan-Qiang Zhang
- Medical Research Center, Yue Bei People's Hospital, Shantou University Medical College, Shaoguan, Guangdong, China
| | - Jun Liu
- Medical Research Center, Yue Bei People's Hospital, Shantou University Medical College, Shaoguan, Guangdong, China
| | - Hai-Bin Chen
- Department of Histology and Embryology, Shantou University Medical College, Shantou, Guangdong, China
| | - Wen-Jie Dai
- Medical Research Center, Yue Bei People's Hospital, Shantou University Medical College, Shaoguan, Guangdong, China
| | - Li-Qing Zhou
- Medical Research Center, Yue Bei People's Hospital, Shantou University Medical College, Shaoguan, Guangdong, China
| | - Chong-Wei Xie
- Medical Research Center, Yue Bei People's Hospital, Shantou University Medical College, Shaoguan, Guangdong, China
| | - Ji-Cheng Li
- Medical Research Center, Yue Bei People's Hospital, Shantou University Medical College, Shaoguan, Guangdong, China
- Institute of Cell Biology, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Corresponding author. Medical Research Center, Yue Bei People's Hospital, Shantou University Medical College, No. 133, Huimin South Road, Shaoguan, 512026, China.
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Zhang SQ, Chen HB, Liu J, Dai WJ, Lu QQ, Li JC. Research status and prospects of acupuncture for prevention and treatment of chemo- and radiotherapy-induced salivary gland dysfunction in head and neck cancer. Anat Rec (Hoboken) 2021; 304:2381-2396. [PMID: 34626452 DOI: 10.1002/ar.24784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 09/12/2021] [Accepted: 09/14/2021] [Indexed: 02/05/2023]
Abstract
Salivary gland dysfunction (SGD) induced by chemo- and radiotherapy for head and neck cancer (HNC) has always been a difficult problem in modern medicine. The quality of life of a large number of HNC patients is severely impaired by SGD such as xerostomia and dysphagia. In recent years, several studies have found that acupuncture can improve patients' salivary secretion, but it has not yet been approved as an alternative therapy for SGD. For this reason, we collected the clinical study reports on acupuncture in the treatment of SGD induced by chemo- and radiotherapy in HNC patients in the past 20 years, and analyzed and discussed the advantages and disadvantages of these studies with respect to tumor types, group setting, intervention modality, acupoints selection, outcome evaluation, and safety. We believed that acupuncture is beneficial for SGD, but the existing objective evidence is insufficient to support its effectiveness. Therefore, improving the Standards for Reporting Interventions in Clinical Trials of Acupuncture, selecting the optimal combination of acupoints through scientific and rigorous study design, and exploring the potential mechanism of acupuncture in the treatment of diseases combined with the meridian theory may be effective ways to promote the acceptance of acupuncture as an alternative therapy for SGD in future. The significance of this review is to provide a reference for researchers to carry out high-quality clinical trials of acupuncture in the treatment of SGD in future from the perspective of the combination of modern medicine and traditional Chinese medicine.
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Affiliation(s)
- Shan-Qiang Zhang
- Medical Research Center, Yue Bei People's Hospital, Shantou University Medical College, Shaoguan, China
| | - Hai-Bin Chen
- Department of Histology and Embryology, Shantou University Medical College, Shantou, China
| | - Jun Liu
- Medical Research Center, Yue Bei People's Hospital, Shantou University Medical College, Shaoguan, China
| | - Wen-Jie Dai
- Medical Research Center, Yue Bei People's Hospital, Shantou University Medical College, Shaoguan, China
| | - Qi-Qi Lu
- Medical Research Center, Yue Bei People's Hospital, Shantou University Medical College, Shaoguan, China
| | - Ji-Cheng Li
- Medical Research Center, Yue Bei People's Hospital, Shantou University Medical College, Shaoguan, China
- Department of Anatomy and Embryology, School of Medicine, Zhejiang University, Hangzhou, China
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Zhang S, Liu J, Chen H, Dai W, Zhou L, Xie C, Li J. A Novel Three-MicroRNA Signature for Predicting Survival in Patients with Nasopharyngeal Carcinoma.. [DOI: 10.21203/rs.3.rs-622292/v1] [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: 11/27/2022]
Abstract
Abstract
This study aims to use integrated bioinformatics technology to dig a predictive miRNA-signature correlated with the prognosis of Nasopharyngeal carcinoma (NPC). Initially, 94 up-regulated and 91 down-regulated differentially expressed microRNAs (DEMs) of NPC were identified in the GEO dataset, and univariate COX regression analysis showed their abnormal expression were significantly associated with poor prognosis of NPC, respectively (P=0.002, P<0.001 and P<0.001). Subsequently, hsa-miR-29c, hsa-miR-30e and hsa-miR-93 identified by random forest algorithm were used to construct a predictive signature through multivariate COX regression analysis. Moreover, PCA, Kaplan-Meier analysis, time-dependent ROC analysis, and univariate and multivariate COX regression analysis demonstrated that there were significant differences in risk score, survival time and the expression of 3 DEMs between the high-risk group and the low-risk group (P< 0.001), and the high-risk group had worse OS (P<0.001). Furthermore, the average AUC values of 1- to 5-year OS, DFS and DMFS predicted by the signature were all above 0.7, and showed better clinical independence than other commonly used indexes. Eventually, 295 differentially expressed mRNAs were obtained by the intersection of the predicted results of TargetScan and the differentially expressed mRNAs in the datasets. Among them, 56 differentially expressed mRNAs were related to PFS. GO and KEGG enrichment analysis indicated that the poor prognosis of NPC was related to the abnormality of chromosomes, cytokines, and chemokines. Collectively, we constructed a 3-miRNA signature with better independent performance in predicting the prognosis for NPC, which may provide a basis for finding new therapeutic targets of NPC patients.
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Yu Q, Liu K, Zhang S, Li H, Xie C, Wu Y, Jiang H, Dai W. Application of Continuous and Intermittent Intraoperative Nerve Monitoring in Thyroid Surgery. J Surg Res 2019; 243:325-331. [DOI: 10.1016/j.jss.2019.05.054] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 04/19/2019] [Accepted: 05/30/2019] [Indexed: 01/25/2023]
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Abstract
Longevity is a very important and interesting topic, and Klotho has been demonstrated to be related to longevity. We combined network pharmacology, machine learning, deep learning, and molecular dynamics (MD) simulation to investigate potent lead drugs. Related protein insulin-like growth factor 1 receptor (IGF1R) and insulin receptor (IR) were docked with the traditional Chinese medicine (TCM) database to screen out several novel candidates. Besides, nine different machine learning algorithms were performed to build reliable and accurate predicted models. Moreover, we used the novel deep learning algorithm to build predicted models. All of these models obtained significant R2, which are all greater than 0.87 on the training set and higher than 0.88 for the test set, respectively. The long time 500 ns molecular dynamics simulation was also performed to verify protein-ligand properties and stability. Finally, we obtained Antifebrile Dichroa, Holarrhena antidysenterica, and Gelsemium sempervirens, which might be potent TCMs for two targets.
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Affiliation(s)
- Jun-Yan Li
- School of Intelligent Systems Engineering, Artificial Intelligence Medical Center, Sun Yat-sen University, Shenzhen 510275, China
| | - Hsin-Yi Chen
- School of Intelligent Systems Engineering, Artificial Intelligence Medical Center, Sun Yat-sen University, Shenzhen 510275, China
| | - Wen-Jie Dai
- School of Pharmacy, Sun Yat-sen University, Shenzhen 510275, China
| | - Qiu-Jie Lv
- School of Intelligent Systems Engineering, Artificial Intelligence Medical Center, Sun Yat-sen University, Shenzhen 510275, China
| | - Calvin Yu-Chian Chen
- School of Intelligent Systems Engineering, Artificial Intelligence Medical Center, Sun Yat-sen University, Shenzhen 510275, China
- Department of Medical Research, China Medical University Hospital, Taichung 40447, Taiwan
- Department of Bioinformatics and Medical Engineering, Asia University, Taichung 41354, Taiwan
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Yu Q, Liu K, Xie C, Ma D, Wu Y, Jiang H, Dai W. Development and validation of a preoperative prediction model for follicular thyroid carcinoma. Clin Endocrinol (Oxf) 2019; 91:348-355. [PMID: 31050007 DOI: 10.1111/cen.14002] [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] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Revised: 04/25/2019] [Accepted: 04/29/2019] [Indexed: 01/25/2023]
Abstract
OBJECTIVE The low pre- and intraoperative diagnostic rates in follicular thyroid carcinoma (FTC) often lead to inadequate surgical resection and necessitate further completion surgery. Therefore, the preoperative prediction of FTC in thyroid nodules is essential. DESIGN AND PATIENT: Patients were categorized into two data sets: the modelling data set, which included 3649 patients admitted to our centre between January 2014 and December 2016, and the validation data set, which included 1253 patients admitted between January and December 2017. Patient data from the FTC and non-FTC groups were initially included in a modelling data set to establish a preoperative prediction model. This model was subsequently employed in a validation data set for external validation of the predictive value. The positivity rate for FTC predicted by the model was compared with that of the intraoperative frozen sections. RESULTS The preoperative serum thyroglobulin level, nodule diameter, calcification status, solidity and blood supply were selected as predictors for the model. The regression equation was as follows: Y = 0.010 × (thyroglobulin level) + 0.556 × (nodule diameter) + 0.675 × (calcification status) + 2.355 × (nodule component) + 1.072*(blood flow) - 9.787. The model positively predicted FTC at values of Y ≥ -4.11. The accuracy, sensitivity, specificity, positive likelihood ratio and negative likelihood ratio of the prediction model were 89.2%, 90.2%, 87.7%, 39.2 and 0.11, respectively. External validation of the model demonstrated acceptable results. The positive prediction rate of the model was 90.7% (78/86), which was significantly higher than that of the intraoperative frozen sections (10.5% [9/86]; P < 0.0001). CONCLUSIONS We successfully established and validated a simple and reliable preoperative prediction model for FTC using the preoperative thyroglobulin level and ultrasonographic features of the thyroid nodules. This model may improve the preoperative evaluation of FTC in clinical settings and facilitate the development of a reasonable surgical programme for FTC.
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Affiliation(s)
- QingAn Yu
- Department of Thyroid Surgery, First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - KunPeng Liu
- Department of Thyroid Surgery, First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - ChangMing Xie
- Department of Thyroid Surgery, First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - DaKun Ma
- Department of Thyroid Surgery, First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - YaoHua Wu
- Department of Thyroid Surgery, First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - HongChi Jiang
- Department of Thyroid Surgery, First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - WenJie Dai
- Department of Thyroid Surgery, First Affiliated Hospital of Harbin Medical University, Harbin, China
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Abstract
It has been demonstrated that MMP13 enzyme is related to most cancer cell tumors. The world's largest traditional Chinese medicine database was applied to screen for structure-based drug design and ligand-based drug design. To predict drug activity, machine learning models (Random Forest (RF), AdaBoost Regressor (ABR), Gradient Boosting Regressor (GBR)), and Deep Learning models were utilized to validate the Docking results, and we obtained an R2 of 0.922 on the training set and 0.804 on the test set in the RF algorithm. For the Deep Learning algorithm, R2 of the training set is 0.90, and R2 of the test set is 0.810. However, these TCM compounds fly away during the molecular dynamics (MD) simulation. We seek another method: peptide design. All peptide database were screened by the Docking process. Modification peptides were optimized the interaction modes, and the affinities were assessed with ZDOCK protocol and Refine Docked protein protocol. The 300 ns MD simulation evaluated the stability of receptor-peptide complexes. The double-site effect appeared on S2, a designed peptide based on a known inhibitor, when complexed with BCL2. S3, a designed peptide referred from endogenous inhibitor P16, competed against cyclin when binding with CDK6. The MDM2 inhibitors S5 and S6 were derived from the P53 structure and stable binding with MDM2. A flexible region of peptides S5 and S6 may enhance the binding ability by changing its own conformation, which was unforeseen. These peptides (S2, S3, S5, and S6) are potentially interesting to treat cancer; however, these findings need to be affirmed by biological testing, which will be conducted in the near future.
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Affiliation(s)
- Jian-Qiang Chen
- School of Intelligent Systems Engineering, Artificial Intelligence Medical Center , Sun Yat-sen University , Shenzhen 510275 , China
| | - Hsin-Yi Chen
- School of Intelligent Systems Engineering, Artificial Intelligence Medical Center , Sun Yat-sen University , Shenzhen 510275 , China
| | - Wen-Jie Dai
- School of Pharmacy , Sun Yat-sen University , Shenzhen 510275 , China
| | - Qiu-Jie Lv
- School of Intelligent Systems Engineering, Artificial Intelligence Medical Center , Sun Yat-sen University , Shenzhen 510275 , China
| | - Calvin Yu-Chian Chen
- School of Intelligent Systems Engineering, Artificial Intelligence Medical Center , Sun Yat-sen University , Shenzhen 510275 , China
- Department of Medical Research , China Medical University Hospital , Taichung 40447 , Taiwan
- Department of Bioinformatics and Medical Engineering , Asia University , Taichung 41354 , Taiwan
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Ma TH, Gao CC, Xie R, Yang XZ, Dai WJ, Zhang JL, Yan W, Wu SN. Predictive values of FAP and HGF for tumor angiogenesis and metastasis in colorectal cancer. Neoplasma 2019; 64:880-886. [PMID: 28895412 DOI: 10.4149/neo_2017_609] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
This study aims to explore the correlation of hepatocyte growth factor (HGF) and fibroblast activation protein (FAP) expressions with the angiogenesis and metastasis in colorectal cancer (CRC). The immunohistochemical SABC method was used to detect HGF and FAP expressions in 127 CRC tissues, 51 colorectal polyp tissues and 28 normal tissues. HGF and FAP expressions in liver metastasis were detected using western blot to analyze the correlation of their expressions with lymph node metastasis and liver metastasis. Micro-vessel density (MVD) and clinic-pathologic information of CRC patients were recorded and analyzed. In CRC group, HGF and FAP expressions were greatly higher than those in normal group and colorectal polyps group (P < 0.05). Moreover, the positive rates of HGF and FAP expressions in lymph node metastasis were evidently higher than those in non-lymph node metastasis (P < 0.05). In liver metastasis group, HGF and FAP expressions were obviously higher than non-liver metastasis group (P < 0.05). CRC group had much more MVD in comparison with normal group and colorectal polyps group (P < 0.05).When compared with negative group, MVD was significantly higher than that in CRC tissue with positive HGF and FAP (P < 0.05). Spearman rank correlation analysis showed that HGF and FAP were in positive correlation with MVD (r = 0.542, P < 0.001; r = 0.753, P < 0.001). These results indicate that FAP and HGF play an important role in CRC angiogenesis, and their expression levels are valuable to predict CRC liver metastasis and lymph node metastasis.
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Yu QA, Ma DK, Liu KP, Wang P, Xie CM, Wu YH, Dai WJ, Jiang HC. Clinicopathologic risk factors for right paraesophageal lymph node metastasis in patients with papillary thyroid carcinoma. J Endocrinol Invest 2018; 41:1333-1338. [PMID: 29550935 DOI: 10.1007/s40618-018-0874-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [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: 01/28/2018] [Accepted: 03/09/2018] [Indexed: 12/11/2022]
Abstract
OBJECTIVES To investigate risk factors associated with right paraesophageal lymph node (RPELN) metastasis in patients with papillary thyroid carcinoma (PTC) and to determine the indications for right lymph node dissection. METHODS Clinicopathologic data from 829 patients (104 men and 725 women) with PTC, operated on by the same thyroid surgery team at the First Affiliated Hospital of Harbin Medical University from January 2013 to May 2017, were analyzed. Overall, 309 patients underwent total thyroidectomy with bilateral lymph node dissection, 488 underwent right thyroid lobe and isthmic resection with right central compartment lymph node dissection, and 32 underwent near-total thyroidectomy (ipsilateral thyroid lobectomy with contralateral near-total lobectomy) with bilateral lymph node dissection. RESULTS The overall rate of central compartment lymph node metastasis was 43.5% (361/829), with right central compartment lymph node and RPELN metastasis rates of 35.5% (294/829) and 19.1% (158/829), respectively. Tumor size, number, invasion, and location, lymph node metastasis, right central compartment lymph node metastasis, and right lateral compartment lymph node metastasis were associated with RPELN in the univariate analysis, whereas age and sex were not. Multivariate analysis identified tumors with a diameter ≥ 1 cm, multiple tumors, tumors located in the right lobe, right central compartment lymph node metastasis, and right lateral compartment lymph node metastasis as independent risk factors for RPELN metastasis. CONCLUSIONS Lymph node dissection, including RPELN dissection, should be performed for patients with PTC with a tumor diameter ≥ 1 cm, multiple tumors, right-lobe tumors, right central compartment lymph node metastasis, or suspected lateral compartment lymph node metastasis.
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Affiliation(s)
- Q A Yu
- Department of Thyroid Surgery, The First Affiliated Hospital Harbin Medical University, Harbin, 150001, Heilongjiang, China
- Department of Liver Surgery, The First Affiliated Hospital Harbin Medical University, Harbin, 150001, Heilongjiang, China
| | - D K Ma
- Department of Thyroid Surgery, The First Affiliated Hospital Harbin Medical University, Harbin, 150001, Heilongjiang, China
| | - K P Liu
- Department of Thyroid Surgery, The First Affiliated Hospital Harbin Medical University, Harbin, 150001, Heilongjiang, China
| | - P Wang
- Operating Room, The First Affiliated Hospital Harbin Medical University, Harbin, 150001, China
| | - C M Xie
- Department of Thyroid Surgery, The First Affiliated Hospital Harbin Medical University, Harbin, 150001, Heilongjiang, China
| | - Y H Wu
- Department of Thyroid Surgery, The First Affiliated Hospital Harbin Medical University, Harbin, 150001, Heilongjiang, China
| | - W J Dai
- Department of Thyroid Surgery, The First Affiliated Hospital Harbin Medical University, Harbin, 150001, Heilongjiang, China.
| | - H C Jiang
- Department of Liver Surgery, The First Affiliated Hospital Harbin Medical University, Harbin, 150001, Heilongjiang, China.
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He YL, Yang HY, Yu CX, Zhang X, Yi QH, Ma ZL, Cha J, Xu XB, Zhang Q, Dai WJ, Qian WJ, Yin J, Zhu SJ, Xu Z. [Study of epidemic area on Tsutsugamushi disease in Taizhou from 2013 to 2014]. Zhonghua Yu Fang Yi Xue Za Zhi 2017; 51:252-256. [PMID: 28260341 DOI: 10.3760/cma.j.issn.0253-9624.2017.03.012] [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 epidemiological characteristics of tsutsugamushi disease, and to confirm the existence of the disease's epidemic foci in Taizhou. Methods: From 2013 to 2014, Dongxing town hospital and Xingqiao town hospital were selected as specimen collection sites in Jingjiang city. Blood samples (5 ml) were collected from 40 patients with acute tsutsugamushi disease. A total of 59 rodents were captured with cage night method in the survey sites at 5, 7, 9, 10, and 11 months in 2013, from which, the spleen, liver, and kidney specimens were selected. Chigger mites were captured by small blackboard method and from the ears of the captured rodents. A total of 226 small blackboards were laid, 27 mites were captured, and the samples were grounded into suspension. Nested-polymerase chain reaction and cell and tissue culture techniques were used to test the specimen from the probable patients, host animals and chigger mites. Results: Among the 40 acute tsutsugamushi disease blood samples, 29 were found to meet the test requirements, 17 were positive for orientia tsutsugamushi nucleic acid with 59% of the positive rate, and 1 stran orientia tsutsugamushi was isolated. 59 rats were captured and the density of mice was 5.5%. Among them, there were 26 Mus musculus (2.4%), 18 Rattus flavipectus (1.7%) and 15 Smelly shrew (density 1.4%). 1 Smelly shrew was tested positive for orientia tsutsugamushi nucleic acid, and the negative results were found in the other rodent specimens. 27 Chigge mites were collected by small blackboard method and the density of mites was 0.12 for each blackboard, among which 3 larvae and 24 nymphs were found. 33 Chigger mites were collected from the ears of 3 Smelly shrew, and the density of the mite was 11 per mouse. All the captured Chigger mites were identified as Leptotrombidium scutellare and 1 group of specimens of Chigger mites from the external environment were positive for orientia tsutsugamushi nucleic acid. Conclusion: There was a high density of mice in the epidemic area from May to November and the species of the chigger mites were Chigger mites in Taizhou. The nucleic acid of the oriental tsutsugamushi was detected in the patients with acute scrub typhus, rodents and vectors. According to the above-mentioned results, it was considered that the scrub typhus epidemic area of Taizhou city has the natural foci of scrub typhus.
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Affiliation(s)
- Y L He
- Department of Acute Infectious Disease, Taizhou Center for Disease Prevention and Control, Taizhou 225300, China
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Xiang R, Dai WJ, Xiong Y, Wu X, Yang YF, Wang L, Dai ZH, Li J, Liu AZ. [Application of directed acyclic graphs in control of confounding]. Zhonghua Liu Xing Bing Xue Za Zhi 2017; 37:1035-8. [PMID: 27453119 DOI: 10.3760/cma.j.issn.0254-6450.2016.07.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Observational study is a method most commonly used in the etiology study of epidemiology, but confounders, always distort the true causality between exposure and outcome when local inferencing. In order to eliminate these confounding, the determining of variables which need to be adjusted become a key issue. Directed acyclic graph(DAG)could visualize complex causality, provide a simple and intuitive way to identify the confounding, and convert it into the finding of the minimal sufficient adjustment for the control of confounding. On the one hand, directed acyclic graph can choose less variables, which increase statistical efficiency of the analysis. On the other hand, it could help avoiding variables that is not measured or with missing values. In a word, the directed acyclic graph could facilitate the reveal of the real causality effectively.
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Affiliation(s)
- R Xiang
- Department of Epidemiology and Health Statistics, School of Public Health, Central South University, Changsha 410008, China
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Dai WJ, Chen L, Tan HZ, Lai ZW, Hu SM, Li Y, Liu AZ. [Influence of social support and coping style on chronic post-traumatic stress disorder after floods]. Zhonghua Liu Xing Bing Xue Za Zhi 2016; 37:214-7. [PMID: 26917518 DOI: 10.3760/cma.j.issn.0254-6450.2016.02.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To explore the long-term prognosis and influence of social support and coping style of patients with post-traumatic stress disorder (PTSD) after suffering from floods. METHODS Patients suffered PTSD due to Dongting lake flood in 1998 were selected through cluster random sampling. PTSD scale civilian version (PCL-C) was used to examine and diagnose the participants in this study. PTSD was then evaluated by the social support rating scale (SSRS) and the simple coping style questionnaire (SCSQ). RESULTS Among all the 120 subjects, 14(11.67%) of them were diagnosed as having PTSD. Compared with the rehabilitation group, scores on subjective support, objective support, total social support and positive coping, total of coping style from the non-rehabilitation group all appeared significant low (P<0.05). Data from the multivariate logistic regression showed that social support (OR=0.281, 95% CI: 0.117-0.678) and coping style (OR= 0.293, 95% CI: 0.128-0.672) were protective factors of the chronic PTSD after the floods while disaster experience (OR=1.626, 95%CI: 1.118-2.365) appeared as a risk factor. CONCLUSION Chronic PTSD developed after the floods called for attention. Better social support, positive coping style could significantly improve the long-term prognosis of patients with PTSD after the floods.
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Affiliation(s)
- W J Dai
- School of Public Health, Central-south University, Changsha 410008, China
| | - L Chen
- Emergency Management, Zhuhai Center for Disease Control and Prevention, Zhuhai 519000, China; School of Public Health, Central-south University, Changsha 410008, China
| | - H Z Tan
- School of Public Health, Central-south University, Changsha 410008, China
| | - Z W Lai
- School of Public Health, Central-south University, Changsha 410008, China
| | - S M Hu
- School of Public Health, Central-south University, Changsha 410008, China
| | - Y Li
- School of Public Health, Central-south University, Changsha 410008, China
| | - A Z Liu
- School of Public Health, Central-south University, Changsha 410008, China
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Guo YL, Zhou JQ, Xiang CQ, Yang WH, Zhang B, Dai WJ, Liu JH, Zheng SJ. Monocyte/macrophage β2-AR as a target of antisympathetic excitation-induced atherosclerotic progression. Genet Mol Res 2014; 13:8080-8. [PMID: 25299192 DOI: 10.4238/2014.october.7.2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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
The aim of this study was to determine whether monocyte/macrophage β2-AR could act as the therapeutic target of antisympathetic excitation-induced atherosclerotic progression. Cultivated human THP-1 cells were divided into different groups and incubated with isoprenaline, metoprolol, propranolol or β2-AR blocker for 24 h, together with oxidized low-density lipoprotein (ox-LDL). Afterwards, each group was analyzed for C-C chemokine receptor type 2 (CCR2) expression, monocyte chemotactic protein 1 (MCP-1) release into medium and cell migration ability. In the isoprenaline group, CCR2 protein level was increased, as well as the secretion of MCP-1, and cell motility was enhanced, in a concentration-dependent manner. Propranolol and ICI 118,551 significantly reversed the stimulatory effect of isoprenaline on THP-1 cells induced by ox-LDL, but only high concentrations of metoprolol interfered significantly with the action of isoprenaline (P < 0.05). Isoprenaline or a β-AR blocker could mediate through β2-AR, affecting MCP-1 secretion, CCR2 protein expression and cell migration capacity of THP-1 cells. Therefore, monocyte-macrophage β2-AR may act as a target of antisympathetic excitation-induced atherosclerotic progression.
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Affiliation(s)
- Y L Guo
- Cardiovascular Internal Department, Renhe Hospital, Three Gorges University, Yichang, Hubei, China
| | - J Q Zhou
- Cardiovascular Internal Department, Renhe Hospital, Three Gorges University, Yichang, Hubei, China
| | - C Q Xiang
- Cardiovascular Internal Department, Renhe Hospital, Three Gorges University, Yichang, Hubei, China
| | - W H Yang
- Cardiovascular Internal Department, Renhe Hospital, Three Gorges University, Yichang, Hubei, China
| | - B Zhang
- Cardiovascular Internal Department, Renhe Hospital, Three Gorges University, Yichang, Hubei, China
| | - W J Dai
- Cardiovascular Internal Department, Renhe Hospital, Three Gorges University, Yichang, Hubei, China
| | - J H Liu
- Cardiovascular Internal Department, Renhe Hospital, Three Gorges University, Yichang, Hubei, China
| | - S J Zheng
- Cardiovascular Internal Department, Renhe Hospital, Three Gorges University, Yichang, Hubei, China
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Tian YG, Tang YH, Xu J, Dai WJ, Liu S, Zhao JP, Ma Y, Jiang HC. [Influence of artificial pneumoperitoneal media on colon carcinoma cell proliferation in vitro]. Zhonghua Wei Chang Wai Ke Za Zhi 2007; 10:561-564. [PMID: 18000780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
OBJECTIVE To evaluate the influence of different pneumoperitoneal media on colon carcinoma LS-174T cell proliferation in vitro. METHODS The artificial pneumoperitoneum was established. The proliferation of LS-174T cells was detected by MTT assay and soft agar clone formation assay. Expression of HIF-1alpha and VEGF was examined by immunohistochemistry. Apoptosis of LS-174T cells was analyzed by AO/EB double fluorescein stain and flow cytometry. RESULTS The growth speed and proliferating capacity of LS-174T cells in CO(2) pneumoperitoneum group[A:0.37 +/- 0.02,formation (32.8 +/- 3.6)%] were significantly higher than those in control group [A:0.33 +/- 0.01,formation (28.4 +/- 2.3)%] and He group [A:0.30 +/- 0.01,formation (23.5 +/- 2.7)%], meanwhile the He group was the lowest (P<0.01). Positive expression of HIF-1alpha and VEGF in CO(2) and He artificial pneumoperitoneum up-regulated significantly as compared to control group(P<0.01), meanwhile the above expression was higher in CO(2) group (P<0.01). The G(0 )/G(1) ratio in CO(2) group was the lowest as compared to control group and He group (P<0.01), and G(0 )/G(1) ratio in He group was higher than that of control group(P<0.01). Aapoptosis rate in He group was the highest as compared with the other two groups(P<0.01). CONCLUSION CO(2) pneumoperitoneum has stronger effect on the proliferation of colon carcinoma cell LS-174T as compared to He pneumoperitoneum in vitro.
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Affiliation(s)
- Yong-Gang Tian
- Department of ICU, The Second Affiliated Hospital, Harbin Medical University, Harbin, China
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Jiang HC, Gao Y, Dai WJ, Sun B, Xu J, Qiao HQ, Meng QH, Wu CJ. Ten-year experience with living related donated splenic transplantation for the treatment of hemophilia A. Transplant Proc 2006; 38:1483-90. [PMID: 16797339 DOI: 10.1016/j.transproceed.2006.03.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [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: 11/17/2005] [Indexed: 11/25/2022]
Abstract
AIM Six cases of hemophilia A treated with living related donated splenic transplantation (LRDST) were performed over 10 years. METHODS We reviewed the six consecutive cases of LRDST from 1992 to 2002. Three patients received whole spleen allografts and the other three, partial spleen allografts. All allografts were transplanted to the extraperitoneal space in the right iliac fossa by an end-to-end anastomosis between the splenic artery and the internal iliac artery and an end-to-side anastomosis between the splenic vein and the external (or common) iliac vein. After the operation, a combined regimen with cyclosporine, azathioprine, anti-lymphocyte globulin, OKT3, was administered to suppress the immune reaction. RESULTS The functional period of the allografts varied between 30 days to 4 years. Patient factor-VIII (F-VIII) levels rose from less than 5% before operation to 15% to 56% postoperatively. One patient died from central nervous system complications. Another lost his graft because exogenous F-VIII was not supplemented in timely fashion at the onset of rejection. And the third could no longer afford the expensive immunosuppressive drugs at 2 years after the operation and eventually lost the spleen. The remaining three patients presently have regained self-support, among whom one has survived for 4 years. CONCLUSION Though the sample pool is relatively small, our clinical observations tend to confirm LRDST as a feasible, effective treatment for hemophilia A.
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Affiliation(s)
- H C Jiang
- Department of General Surgery, First Clinical Hospital of Harbin Medical University, Harbin, People' Republic of China
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Dai WJ, Hu Z, Wu LF, Jiang HC, Wu YH, Pan SH. Clone culture of human interleukin-10 gene modified L02 hepatocytes and selection of cell strain with most interleukin-10 expression. Shijie Huaren Xiaohua Zazhi 2006; 14:1458-1461. [DOI: 10.11569/wcjd.v14.i15.1458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To clone and culture human interleukin-10 (IL-10) gene modified L02 hepatocytes and select the cell strain highly expressing IL-10.
METHODS: With preparation of previously constructed and purified eukaryotic expression plasmid vector pchIL-10, L02 hepatocytes were transfected and then the positive clones were selected with the help of G418 pressure. Enzyme-linked immunosorbent assay (ELISA) was used to detect the expression of human IL-10 in the cells strain.
RESULTS: Sequencing and restriction endonuclease digestion confirmed that eukaryotic expression plasmid vector pchIL-10 was constructed successfully, and electrophoresis show a band of 540 bp. hIL-10 gene was highly expressed in L02 hepatocytes and the highest expression level was 69.875 ng/106 cell per hour.
CONCLUSION: Human interleukin-10 (IL-10) gene modified L02 hepatocytes can highly expresses hIl-10, which may be used in the antifibrotic or cirrhotic treatment.
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Hunziker IP, Zurbriggen R, Glueck R, Engler OB, Reichen J, Dai WJ, Pichler WJ, Cerny A. Perspectives: towards a peptide-based vaccine against hepatitis C virus. Mol Immunol 2001; 38:475-84. [PMID: 11741697 DOI: 10.1016/s0161-5890(01)00083-9] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Hepatitis C virus (HCV) is a widespread infectious disease in humans with the negative implication of becoming chronic in most persons. Patients infected with HCV are at risk of liver cirrhosis or hepatocellular carcinoma at later stages. In contrast to hepatitis A and hepatitis B, there is no immunization yet available, neither prophylactic nor therapeutic. Thus, there is an urgent need to develop a safe, protective vaccine against this fatal disease. Developing countries are even more at risk for HCV. There are currently a number of scientific approaches aimed towards solving this problem. Taking both risks and costs of immunization into consideration, a peptide-based vaccine may be a reasonable prophylactic protection. Also, it might be of therapeutic use in already infected patients by increasing a specific CTL response against HCV. In our lab, we are focusing on immunopotentiating reconstituted influenza virosomes (IRIVs) as carriers for immunogenic HLA-A2-restricted core epitopes to induce peptide-specific cytotoxic T lymphocytes (CTLs). The IRIVs are similar to liposomes, but in addition contain influenza-derived hemagglutinin and neuraminidase on their outer surface which makes them fusogenic, thus, permitting antigen delivery to host cells. So far, virosomes have been successfully used for vaccine development and as a result a virosomal vaccine against both influenza virus (Inflexal) BERNA) and hepatitis A virus (HAV) (Epaxal) BERNA) already exist on the market. This paper focuses on the importance of development of a successful vaccine against HCV and, more specifically, we discuss the use, advantages and disadvantages of a peptide-based vaccine. A brief report of our latest findings will be included.
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Affiliation(s)
- I P Hunziker
- Clinic of Rheumatology and Clinical Immunology/Allergology, University Hospital, Inselspital Bern, 3010, Bern, Switzerland
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Abstract
An estimated 400 million people are chronically infected with the hepatitis B virus (HBV). Chronic viral hepatitis infection incurs serious sequelae such as liver cirrhosis and hepatocellular carcinoma. Prevention and treatment, thus, represent an important target for public health. Preventive vaccines using HBsAg alone or combined with other antigens allow for the generation of neutralizing antibodies which effectively prevent infection in immunocompetent individuals. Cell-mediated immunological mechanisms are thought to be crucial in determining viral persistence or viral elimination. Therapeutic approaches aiming to shift cellular immunity towards viral elimination have been on the research agenda for many years. This paper summarizes pre-clinical and clinical results obtained with the use of immunogenic peptides formulated as vaccines to selectively boost cellular immune responses. Such vaccines are capable of generating cellular immune responses in animal models as well as in humans and represent an important step towards the development of a therapeutic vaccine against chronic hepatitis.
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Affiliation(s)
- O B Engler
- Clinic of Rheumatology and Clinical Immunology/Allergology, University Hospital, Inselspital Bern, 3010, Bern, Switzerland
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Dai WJ, Hemphill A, Waldvogel A, Ingold K, Deplazes P, Mossmann H, Gottstein B. Major carbohydrate antigen of Echinococcus multilocularis induces an immunoglobulin G response independent of alphabeta+ CD4+ T cells. Infect Immun 2001; 69:6074-83. [PMID: 11553545 PMCID: PMC98736 DOI: 10.1128/iai.69.10.6074-6083.2001] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Echinococcus multilocularis causes alveolar echinococcosis, one of the most lethal helminthic (accidental) infections in humans, as the life cycle predominantly includes wildlife rodents as intermediate hosts. The physical barrier between the proliferating parasitic metacestode and the host tissue is the acellular laminated layer (LL), which is characterized by its rich high-molecular-weight polysaccharide composition. Conversely to a crude protein-rich vesicular fluid antigen, a major carbohydrate antigen of the LL--the Em2(G11) antigen--did not stimulate murine T-cell proliferation in vitro. In fact, the persistent metacestode growth and antigenic stimulation induced a Th2 shift in vivo following conventional infection by intraperitoneal inoculation of 100 metacestode vesicles into C57/BL6 mice. Concurrently, the expression of Th1 cytokines (interleukin-2 and gamma interferon) remained persistently low until the late stage of chronic infection. In comparison to a recombinant proteinic II/3 antigen, the specific immunoglobulin G (IgG) response against the Em2(G11) antigen (including all IgG isotypes) maintained persistently low avidity. Furthermore, the Em2(G11) antigen induced a specific IgM and IgG response in T-cell-deficient athymic nude, TCRbeta(-/-), major histocompatibility complex class II (MHCII)(-/-)(CD4-deficient), and CD40(-/-) mice. The Em2(G11)-specific IgG synthesized in nude TCRbeta(-/-) and MHCII(-/-) mice was predominantly of the IgG3 and IgG2a isotypes and of the IgG3 and IgG2b isotypes in CD40(-/-) mice. This finding suggested that in vivo, the IgG response to major carbohydrate antigen Em2(G11) of E. multilocularis could take place independently of alphabeta+ CD4+ T cells and in the absence of CD40-CD40 ligand interactions; thus, the Em2(G11) antigen of the acellular LL represents a T-cell-independent antigen. Functionally, the encapsulating LL, and especially its major carbohydrate antigen, Em2(G11), seems to be one of the key factors in the parasite's survival strategy and acts by modulating the host immune response by virtue of its T-cell-independent nature.
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Affiliation(s)
- W J Dai
- Institute of Parasitology, University of Berne, CH-3001 Berne, Switzerland.
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Affiliation(s)
- W J Dai
- Second Department of General Surgery, the First Clinical School, Harbin Medical University, Harbin 150001, Heilongjiang Province, China.
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Gottstein B, Eperon S, Dai WJ, Cannas A, Hemphill A, Greif G. Efficacy of toltrazuril and ponazuril against experimental Neospora caninum infection in mice. Parasitol Res 2001; 87:43-8. [PMID: 11199848 DOI: 10.1007/s004360000306] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Neosporosis is a disease affecting predominantly fetal development in cattle and dog hosts; and it may cause neuromuscular disfunction in infected newborn calves and pups. Predispositions--including, e.g. transient immunosuppression during pregnancy--may result in an increased dissemination of the parasite within the host or its offspring. Chemotherapeutic treatment of neosporosis may be an issue, provided that an appropriate drug is made available. In this respect, we describe the use of a mouse model for the evaluation of toltrazuril and ponazuril medication as a means of preventing parasite dissemination and subsequent formation of cerebral lesions. Toltrazuril- and ponazuril-treated mice were experimentally infected intraperitoneally (i.p.) with 2 x 10(6) Neospora caninum tachyzoites. The infection was monitored at three levels: clinically, by assessing symptoms, histologically, by assessing the occurrence of cerebral lesions and parasites by immunohistochemistry, and on the molecular level, by detection of parasite DNA using PCR. Chemotherapy using either toltrazuril or ponazuril, both applied in a drinking-water formulation (20 mg toltrazuril or ponazuril kg(-1) body weight day(-1)) completely prevented the formation of cerebral lesions in all treated animals, as assessed by immunohistochemistry. PCR analyses of these treated animals showed that DNA-detectability was reduced by 91% and 90% upon toltrazuril and ponazuril medication, respectively.
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Affiliation(s)
- B Gottstein
- Institute of Parasitology, University of Berne, Switzerland.
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Hölscher C, Mohrs M, Dai WJ, Köhler G, Ryffel B, Schaub GA, Mossmann H, Brombacher F. Tumor necrosis factor alpha-mediated toxic shock in Trypanosoma cruzi-infected interleukin 10-deficient mice. Infect Immun 2000; 68:4075-83. [PMID: 10858224 PMCID: PMC101698 DOI: 10.1128/iai.68.7.4075-4083.2000] [Citation(s) in RCA: 122] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/1999] [Accepted: 03/30/2000] [Indexed: 01/25/2023] Open
Abstract
Using interleukin-10 (IL-10)-deficient (IL-10(-/-)) mice, previous studies revealed a pathological immune response after infection with Trypanosoma cruzi that is associated with CD4(+) T cells and overproduction of proinflammatory cytokines. In this study we further investigate the pathology and potential mediators for the mortality in infected animals. T. cruzi-infected IL-10(-/-) mice showed reduced parasitemia accompanied by increased systemic release of gamma interferon (IFN-gamma), IL-12, and reactive nitrogen intermediates and overproduction of tumor necrosis factor alpha (TNF-alpha). Despite this early resistance, IL-10(-/-) mice died within the third week of infection, whereas all control mice survived acute infection. The clinical manifestation with weight loss, hypothermia, hypoglycemia, hyperkalemia, and increased liver-derived enzymes in the blood together with hepatic necrosis and intravascular coagulation in moribund mice indicated a toxic shock-like syndrome, possibly mediated by the systemic TNF-alpha overproduction. Indeed, high production of systemic TNF-alpha significantly correlated with mortality, and moribund mice died with critically high TNF-alpha concentrations in the blood. Consequent treatment with anti-TNF-alpha antiserum attenuated pathological changes in T. cruzi-infected IL-10(-/-) mice and significantly prolonged survival; the mice died during the fourth week postinfection, again with a striking correlation between regaining high systemic TNF-alpha concentrations and the time of death. Since elevated serum IL-12 and IFN-gamma concentrations were not affected by the administration of antiserum, these studies suggest that TNF-alpha is the direct mediator of this toxic shock syndrome. In conclusion, induction of endogenous IL-10 during experimentally induced Chagas' disease seems to be crucial for counterregulating an overshooting proinflammatory cytokine response resulting in TNF-alpha-mediated toxic shock.
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Affiliation(s)
- C Hölscher
- Max-Planck-Institute for Immunobiology, Freiburg, Germany
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26
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Dai WJ, Funk A, Herdegen T, Unger T, Culman J. Blockade of central angiotensin AT(1) receptors improves neurological outcome and reduces expression of AP-1 transcription factors after focal brain ischemia in rats. Stroke 1999; 30:2391-8; discussion 2398-9. [PMID: 10548676 DOI: 10.1161/01.str.30.11.2391] [Citation(s) in RCA: 153] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND AND PURPOSE Angiotensin-converting enzyme inhibitors have been shown to protect against stroke in hypertensive rats and to improve neurological outcome after cerebral ischemia in normotensive rats. The present study was designated to test the hypothesis that blockade of brain AT(1) receptors improves the recovery from focal cerebral ischemia and reduces expression of AP-1 transcription factors c-Fos and c-Jun, which have been associated with programmed cell death and neurodegeneration. METHODS Experiments were carried out in normotensive male Wistar rats. Focal cerebral ischemia was induced by middle cerebral artery occlusion lasting for 90 minutes and followed by reperfusion. The selective AT(1) receptor antagonist irbesartan was infused intracerebroventricularly over a 5-day period before the induction of ischemia at a dose that inhibited brain but not vascular AT(1) receptors. Twenty-four hours after ischemia, neurological outcome was evaluated and expression of c-Fos and c-Jun proteins in the brain was studied immunocytochemically. RESULTS Focal brain ischemia resulted in a strong induction of c-Fos and c-Jun proteins in the cortex, which positively correlated with the degree of neurological deficits. Treatment of rats with irbesartan significantly improved neurological outcome of focal cerebral ischemia when compared with the vehicle-treated group and markedly reduced the expression of c-Fos and c-Jun proteins in the cortex on the ligated side of the brain. Irbesartan pretreatment completely abolished the ischemia-induced c-Fos expression in the hippocampus. CONCLUSIONS The present study shows a relationship between c-Fos and c-Jun expression and neurological outcome after focal brain ischemia. Our data indicate that long-term blockade of central AT(1) receptors improves the recovery from brain ischemia and reduces the expression of c-Fos and c-Jun proteins in the brain. Pretreatment with an AT(1) receptor antagonist has beneficial effects after cerebral ischemia.
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Affiliation(s)
- W J Dai
- Institute of Pharmacology, Christian-Albrechts-University of Kiel, Germany
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27
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Abstract
In some parasitic infections immunosuppression is a prominent characteristic of the host-parasite interplay. We have used a murine alveolar echinococcosis (AE) model in susceptible C57BL/6 mice to document a suppressed splenocyte proliferative response to concanavalin A (Con A) at the early (1-month) stage and to Echinococcus multilocularis-crude antigen (Emc-antigen) at the late (4-6-month) stage of chronic infection. Despite proliferative suppression, splenic cytokine production [interleukin-2 (IL-2), IL-4 and interferon-gamma (IFN-gamma)] in response to Con A or Emc-antigen stimulation was not suppressed at 1 month postinfection (p.i.). Infection resulted in a strong Mac-1+ cell infiltration of the peritoneal cavity and spleen. Peritoneal cells (PEC) from mice infected at the 1-month stage were rich in macrophages and expressed significantly higher levels of transcripts for the inflammatory cytokine IL-1beta and for tumour necrosis factor-alpha and inducible nitric oxide synthase (iNOS), when compared with PEC from non-infected control mice. Conversely, the IL-10 transcript level remained low and did not change during infection. Spleen cells supplemented with PEC from infected mice induced a marked increase in the levels of nitrite in response to Con A and Emc-antigen stimulation, and also a complete suppression of splenic proliferation. The spleen cells from late-stage infected mice expressed only background levels of IL-10 but greatly increased levels of iNOS, when compared with normal spleen cells. This observation correlated with the immunosuppression demonstrated at the late stage of murine AE. Furthermore, the suppressed splenic proliferative responses observed at the early and late stage were reversed to a large extent by the addition of NG-monomethyl-l-arginine and partially by anti-IFN-gamma. Thus, our results demonstrated that the immunosuppression observed in chronic AE was not primarily dependent on IL-10 but rather on nitric oxide production by macrophages from infected animals.
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Affiliation(s)
- W J Dai
- Institute of Parasitology, University of Berne, Länggass-Strasse 122, CH-3001 Berne, Switzerland
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Brombacher F, Dorfmüller A, Magram J, Dai WJ, Köhler G, Wunderlin A, Palmer-Lehmann K, Gately MK, Alber G. IL-12 is dispensable for innate and adaptive immunity against low doses of Listeria monocytogenes. Int Immunol 1999; 11:325-32. [PMID: 10221644 DOI: 10.1093/intimm/11.3.325] [Citation(s) in RCA: 71] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
We have studied IL-12p35-deficient (IL-12p35(-/-)) mice to evaluate the role of IL-12 in resistance against Listeria monocytogenes. In the absence of bioactive IL-12p75, mutant mice acquired higher bacterial organ burden than wild-type mice and died during the first week following infection with normally sublethal doses of Listeria. Moreover, blood IFN-gamma levels were strikingly reduced in mutant mice at day 2 post-infection. These results suggest that in IL-12p35-deficient mice impaired production of IFN-gamma which is crucial for activation of listericidal effector functions of macrophages leads to defective innate immunity against Listeria. In contrast to mice deficient for IFN-gamma or IFN-gamma receptor which are unable to resist very low infection doses of Listeria, IL-12p35(-/-) mice resisted up to 1000 c.f.u. and were able to eliminate Listeria. Spleen cells from mutant mice re-stimulated with heat-killed Listeria produced considerable amounts of IFN-gamma, suggesting that at low dose infection sufficient IFN-gamma is produced independently of IL-12. Subsequent challenge of these immunized mice with high doses of L. monocytogenes resulted in sterile elimination demonstrating efficient memory responses. These results demonstrate for the first time that at low doses of Listeria IL-12 is neither critical for innate immunity nor for the development of protective T cell-dependent acquired immunity.
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Affiliation(s)
- F Brombacher
- Max-Planck-Institute for Immunobiology, Freiburg, Germany
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29
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Andersson A, Dai WJ, Di Santo JP, Brombacher F. Early IFN-gamma production and innate immunity during Listeria monocytogenes infection in the absence of NK cells. J Immunol 1998; 161:5600-6. [PMID: 9820538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
NK cells are believed to play a mandatory role during the early phases of Listeria monocytogenes infection by producing IFN-gamma, which is required for the activation of macrophage effector functions. Mice deficient in the common cytokine receptor gamma-chain (gamma(c)-/-), which completely lack NK cells, were used to examine whether NK cells were essential for resistance to Listeria infection in vivo. Surprisingly, infected gamma(c)-/- mice showed normal innate immunity and macrophage responses against sublethal Listeria infection 2 days postinfection. At this time point, gamma(c)-/- mice showed increased blood IFN-gamma levels compared with those in noninfected controls, demonstrating an NK-independent source of IFN-gamma, which explains early resistance. Listeria-infected gamma(c)-/- x recombinase-activating gene-2-/- double-deficient mice were unable to produce IFN-gamma and were highly susceptible to L. monocytogenes. Since T cells, but not B cells, are major IFN-gamma producers, and gamma(c)-/- T cells were found to be efficient IFN-gamma producers in vitro, we conclude from these results that T cells functionally replace NK cells for the early IFN-gamma production that is necessary for activating the innate immune system following infection with L. monocytogenes. This novel observation in listeriosis underscores how the adaptive immune response can maintain and influence innate immunity.
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Affiliation(s)
- A Andersson
- Institut National de la Santé et de la Recherche Médicale Unit 429, Hôpital Necker-Enfants Malades, Paris, France
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Maier T, Dai WJ, Csikós T, Jirikowski GF, Unger T, Culman J. Oxytocin pathways mediate the cardiovascular and behavioral responses to substance P in the rat brain. Hypertension 1998; 31:480-6. [PMID: 9453349 DOI: 10.1161/01.hyp.31.1.480] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Stimulation of brain periventricular and hypothalamic substance P receptors induces a pressor response and tachycardia associated with mesenteric and renal vasoconstriction and hindlimb vasodilation resembling thus the classical defense reaction. This cardiovascular response is brought about by the activation of the sympathoadrenal system and is accompanied by grooming behavior. To address the role of oxytocinergic pathways in the brain in the mediation of these responses, we investigated the effects of central pretreatment of rats with oxytocin antisense, mixed base, and sense oligodeoxynucleotides on mean arterial pressure, heart rate, and grooming behavior induced by intracerebroventricular injections of substance P (50 pmol). Central pretreatment of conscious rats with the oxytocin antisense oligodeoxynucleotide (intracerebroventricular injections, 8 and 4 hours before administration of substance P) attenuated the mean arterial pressure (by 55%) and heart rate responses (by 58%) as well as grooming behavior induced by the peptide. A complete recovery of all substance P-induced responses was observed 28 hours after antisense oligodeoxynucleotide pretreatment. Intracerebroventricular pretreatment of rats with mixed base and sense oligodeoxynucleotides did not affect the cardiovascular and behavioral responses to substance P. The signal for oxytocin mRNA in the paraventricular nucleus was reduced only in rats pretreated with the antisense oligodeoxynucleotide. These results demonstrate that oxytocin neurons in the paraventricular nucleus, which innervate the cardiovascular centers in the hindbrain and the spinal cord, mediate the increases in blood pressure and heart rate induced by stimulation of substance P receptors in the forebrain. These neurons may also transmit signals, which are generated by substance P in the hypothalamus and are responsible for the sympathoadrenal activation in response to stress.
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Affiliation(s)
- T Maier
- Institute of Pharmacology, Christian-Albrechts University of Kiel, Germany
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31
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Satoskar A, Brombacher F, Dai WJ, McInnes I, Liew FY, Alexander J, Walker W. SCID mice reconstituted with IL-4-deficient lymphocytes, but not immunocompetent lymphocytes, are resistant to cutaneous leishmaniasis. The Journal of Immunology 1997. [DOI: 10.4049/jimmunol.159.10.5005] [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: 01/01/2023]
Abstract
Abstract
To characterize the roles of lymphoid- and non-lymphoid-derived IL-4 during cutaneous infection with Leishmania mexicana, the disease was monitored in SCID mice reconstituted with splenocytes from either immunocompetent BALB/c mice or IL-4-deficient BALB/c mice. Whereas following s.c. infection with L. mexicana no lesion growth was observed in BALB/c IL-4(-/-) mice and lesion growth was significantly inhibited in SCID mice, rapid initial lesion growth occurred in both SCID IL-4(+/+) and SCID IL-4(-/-) reconstituted mice. However, after 3 to 4 wk of infection, lesions in SCID IL-4(-/-) but not SCID IL-4(+/+) reconstituted mice began to heal. This paralleled a developing Th1-like phenotype and parasite clearance in the former group and a developing Th2-like phenotype in the latter group. Lesion sites from the healing SCID IL-4(-/-) mice expressed the inducible nitric oxide synthase, whereas the SCID IL-4(+/+) mice with progressive disease did not. These findings indicate that non-lymphocyte-derived IL-4 may play a role in initiating lesion growth following cutaneous infection with L. mexicana, but the presence of lymphocyte-derived IL-4 is essential for disease progression, and in its absence, lesions heal due to a developing Th1 phenotype.
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Affiliation(s)
- A Satoskar
- Department of Immunology, University of Strathclyde, University of Glasgow, Scotland, U.K
| | - F Brombacher
- Department of Immunology, University of Strathclyde, University of Glasgow, Scotland, U.K
| | - W J Dai
- Department of Immunology, University of Strathclyde, University of Glasgow, Scotland, U.K
| | - I McInnes
- Department of Immunology, University of Strathclyde, University of Glasgow, Scotland, U.K
| | - F Y Liew
- Department of Immunology, University of Strathclyde, University of Glasgow, Scotland, U.K
| | - J Alexander
- Department of Immunology, University of Strathclyde, University of Glasgow, Scotland, U.K
| | - W Walker
- Department of Immunology, University of Strathclyde, University of Glasgow, Scotland, U.K
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Satoskar A, Brombacher F, Dai WJ, McInnes I, Liew FY, Alexander J, Walker W. SCID mice reconstituted with IL-4-deficient lymphocytes, but not immunocompetent lymphocytes, are resistant to cutaneous leishmaniasis. J Immunol 1997; 159:5005-13. [PMID: 9366428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
To characterize the roles of lymphoid- and non-lymphoid-derived IL-4 during cutaneous infection with Leishmania mexicana, the disease was monitored in SCID mice reconstituted with splenocytes from either immunocompetent BALB/c mice or IL-4-deficient BALB/c mice. Whereas following s.c. infection with L. mexicana no lesion growth was observed in BALB/c IL-4(-/-) mice and lesion growth was significantly inhibited in SCID mice, rapid initial lesion growth occurred in both SCID IL-4(+/+) and SCID IL-4(-/-) reconstituted mice. However, after 3 to 4 wk of infection, lesions in SCID IL-4(-/-) but not SCID IL-4(+/+) reconstituted mice began to heal. This paralleled a developing Th1-like phenotype and parasite clearance in the former group and a developing Th2-like phenotype in the latter group. Lesion sites from the healing SCID IL-4(-/-) mice expressed the inducible nitric oxide synthase, whereas the SCID IL-4(+/+) mice with progressive disease did not. These findings indicate that non-lymphocyte-derived IL-4 may play a role in initiating lesion growth following cutaneous infection with L. mexicana, but the presence of lymphocyte-derived IL-4 is essential for disease progression, and in its absence, lesions heal due to a developing Th1 phenotype.
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MESH Headings
- Animals
- Antibodies, Protozoan/biosynthesis
- Antigens, Protozoan/immunology
- Cells, Cultured
- Immunity, Innate
- Injections, Subcutaneous
- Interferon-gamma/biosynthesis
- Interleukin-4/deficiency
- Interleukin-4/genetics
- Interleukin-5/biosynthesis
- Leishmania mexicana/growth & development
- Leishmania mexicana/immunology
- Leishmaniasis, Cutaneous/enzymology
- Leishmaniasis, Cutaneous/immunology
- Leishmaniasis, Cutaneous/parasitology
- Leishmaniasis, Cutaneous/pathology
- Lymph Nodes/metabolism
- Lymphocyte Activation
- Lymphocyte Depletion
- Lymphocyte Transfusion
- Male
- Mice
- Mice, Inbred BALB C
- Mice, Knockout
- Mice, SCID
- Nitric Oxide Synthase/biosynthesis
- Spleen/cytology
- Spleen/immunology
- Spleen/transplantation
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Affiliation(s)
- A Satoskar
- Department of Immunology, University of Strathclyde, University of Glasgow, Scotland, U.K
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33
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Dai WJ, Bartens W, Köhler G, Hufnagel M, Kopf M, Brombacher F. Impaired macrophage listericidal and cytokine activities are responsible for the rapid death of Listeria monocytogenes-infected IFN-gamma receptor-deficient mice. J Immunol 1997; 158:5297-304. [PMID: 9164949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
IFN-gamma receptor-deficient (IFN-gammaR -/-) mice were used to study the innate immune responses during infection with Listeria monocytogenes. Mutant mice were unable to limit bacterial growth and died of sepsis even with an infection dose of 70 Listeria. At day 2, they showed an exacerbated listeriosis and mice succumbed to infection before the onset of an effective specific immunity, demonstrating a defective innate immunity. Recruitment and extravasation of phagocytic cells to infected organs was present and dominated by neutrophils. However, during the early course of infection, mutant mice responded by an elevated inflammatory type 1 cytokine response, as determined by IL-12, IFN-gamma, TNF-alpha, and IL-1alpha-specific RNA expression. Induction of inducible nitric oxide synthase was present and also increased in mutant mice. Interestingly, IFN-gammaR -/- neutrophils expressed substantial TNF-alpha- and IL-1alpha-specific RNA, suggesting a substantial contribution in the overall inflammatory cytokine response. In contrast, IFN-gammaR -/- macrophages showed reduced MHC class II surface expression levels and impaired TNF-alpha and IL-1alpha but normal IL-6 production after restimulation with heat-killed L. monocytogenes. Moreover, IFN-gammaR -/- macrophages showed defective listericidal activities. In contrast to normal macrophages, Listeria escaped rapidly from the phagosome in IFN-gammaR -/- macrophages to the cytoplasm, where they productively survived. In conclusion, these data suggest that IFN-gammaR signaling activates yet unknown functions in macrophages, preventing Listeria-induced escape from the phagosome and consequent killing of the invader. Together with the impaired cytokine responses, these macrophage defects seem to be responsible for the dramatic susceptibility during innate immunity, whereas predominant neutrophil responses mediate limited protective role in mutant mice.
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Affiliation(s)
- W J Dai
- Max Planck Institute for Immunobiology, Freiburg, Germany
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Dai WJ, Bartens W, Köhler G, Hufnagel M, Kopf M, Brombacher F. Impaired macrophage listericidal and cytokine activities are responsible for the rapid death of Listeria monocytogenes-infected IFN-gamma receptor-deficient mice. The Journal of Immunology 1997. [DOI: 10.4049/jimmunol.158.11.5297] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
IFN-gamma receptor-deficient (IFN-gammaR -/-) mice were used to study the innate immune responses during infection with Listeria monocytogenes. Mutant mice were unable to limit bacterial growth and died of sepsis even with an infection dose of 70 Listeria. At day 2, they showed an exacerbated listeriosis and mice succumbed to infection before the onset of an effective specific immunity, demonstrating a defective innate immunity. Recruitment and extravasation of phagocytic cells to infected organs was present and dominated by neutrophils. However, during the early course of infection, mutant mice responded by an elevated inflammatory type 1 cytokine response, as determined by IL-12, IFN-gamma, TNF-alpha, and IL-1alpha-specific RNA expression. Induction of inducible nitric oxide synthase was present and also increased in mutant mice. Interestingly, IFN-gammaR -/- neutrophils expressed substantial TNF-alpha- and IL-1alpha-specific RNA, suggesting a substantial contribution in the overall inflammatory cytokine response. In contrast, IFN-gammaR -/- macrophages showed reduced MHC class II surface expression levels and impaired TNF-alpha and IL-1alpha but normal IL-6 production after restimulation with heat-killed L. monocytogenes. Moreover, IFN-gammaR -/- macrophages showed defective listericidal activities. In contrast to normal macrophages, Listeria escaped rapidly from the phagosome in IFN-gammaR -/- macrophages to the cytoplasm, where they productively survived. In conclusion, these data suggest that IFN-gammaR signaling activates yet unknown functions in macrophages, preventing Listeria-induced escape from the phagosome and consequent killing of the invader. Together with the impaired cytokine responses, these macrophage defects seem to be responsible for the dramatic susceptibility during innate immunity, whereas predominant neutrophil responses mediate limited protective role in mutant mice.
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Affiliation(s)
- W J Dai
- Max Planck Institute for Immunobiology, Freiburg, Germany
| | - W Bartens
- Max Planck Institute for Immunobiology, Freiburg, Germany
| | - G Köhler
- Max Planck Institute for Immunobiology, Freiburg, Germany
| | - M Hufnagel
- Max Planck Institute for Immunobiology, Freiburg, Germany
| | - M Kopf
- Max Planck Institute for Immunobiology, Freiburg, Germany
| | - F Brombacher
- Max Planck Institute for Immunobiology, Freiburg, Germany
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Dai WJ, Köhler G, Brombacher F. Both innate and acquired immunity to Listeria monocytogenes infection are increased in IL-10-deficient mice. J Immunol 1997; 158:2259-67. [PMID: 9036973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
IL-10-deficient mice were highly resistant to Listeria monocytogenes during the course of infection. An increased innate immunity was suggested by reduced bacterial burdens (as much as 50-fold) early (days 2 and 3) in the infection, as compared with control mice. In addition, in vitro stimulation of both IL-10-deficient peritoneal exudate cells and spleen cells with heat-killed Listeria resulted in a dramatically enhanced proinflammatory cytokine response (e.g., IL-12, IFN-gamma, TNF-alpha, IL-1alpha, and IL-6). During later stages of a primary Listeria infection, the reduced bacterial burden in the infected organs of IL-10-deficient mice was accompanied by decreased tissue damage and earlier clearance of the pathogen, as well as a stronger Th1 polarization. The absence of IL-10 did not influence membrane-bound factors that stimulate Th cell responses, demonstrated by the finding of normal MHC class II, B7.1, and B7.2 surface expression on F4/80+ macrophages in vivo. IL-10-deficient mice were also more resistant to a secondary infection, accompanied by an enhanced Th1 response. The results presented in this work demonstrate that the absence of IL-10 augments innate and acquired immunity during primary and secondary L. monocytogenes infection by up-regulating proinflammatory type 1 cytokine responses. The resulting protective Th1 responses lead to an effective reduction of bacterial growth and tissue destruction and to an earlier clearance of the bacteria. The physiologic role of IL-10 during L. monocytogenes infection studies is discussed and compared with pathogenic infections that induce a more systemic cytokine response in IL-10-deficient mice.
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Affiliation(s)
- W J Dai
- Max Planck Institute for Immunobiology, Freiburg, Germany
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Dai WJ, Köhler G, Brombacher F. Both innate and acquired immunity to Listeria monocytogenes infection are increased in IL-10-deficient mice. The Journal of Immunology 1997. [DOI: 10.4049/jimmunol.158.5.2259] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
IL-10-deficient mice were highly resistant to Listeria monocytogenes during the course of infection. An increased innate immunity was suggested by reduced bacterial burdens (as much as 50-fold) early (days 2 and 3) in the infection, as compared with control mice. In addition, in vitro stimulation of both IL-10-deficient peritoneal exudate cells and spleen cells with heat-killed Listeria resulted in a dramatically enhanced proinflammatory cytokine response (e.g., IL-12, IFN-gamma, TNF-alpha, IL-1alpha, and IL-6). During later stages of a primary Listeria infection, the reduced bacterial burden in the infected organs of IL-10-deficient mice was accompanied by decreased tissue damage and earlier clearance of the pathogen, as well as a stronger Th1 polarization. The absence of IL-10 did not influence membrane-bound factors that stimulate Th cell responses, demonstrated by the finding of normal MHC class II, B7.1, and B7.2 surface expression on F4/80+ macrophages in vivo. IL-10-deficient mice were also more resistant to a secondary infection, accompanied by an enhanced Th1 response. The results presented in this work demonstrate that the absence of IL-10 augments innate and acquired immunity during primary and secondary L. monocytogenes infection by up-regulating proinflammatory type 1 cytokine responses. The resulting protective Th1 responses lead to an effective reduction of bacterial growth and tissue destruction and to an earlier clearance of the bacteria. The physiologic role of IL-10 during L. monocytogenes infection studies is discussed and compared with pathogenic infections that induce a more systemic cytokine response in IL-10-deficient mice.
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Affiliation(s)
- W J Dai
- Max Planck Institute for Immunobiology, Freiburg, Germany
| | - G Köhler
- Max Planck Institute for Immunobiology, Freiburg, Germany
| | - F Brombacher
- Max Planck Institute for Immunobiology, Freiburg, Germany
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Abstract
The purpose of this study was to examine the possible effects of in vivo morphine (Mor) treatments on macrophage involvement in the mediation of reductions in T-cell functions. Male BALB/c mice were exposed to multiple sc injections of Mor in increasing doses twice a day for 4 days. T-lymphocyte proliferation in response to alloantigen was significantly affected by Mor, while Mor treatment failed to suppress PMA/A23187-induced macrophage-depleted lymphocyte proliferation. Interestingly, after separation of lymphocytes and macrophages from control or Mor-treated mice, Con A-stimulated T-cell proliferation was suppressed only when Mor-treated macrophages were combined with control or Mor-treated lymphocytes. Further, addition of exogenous interleukin (IL)-1 and IL-2 promoted the proliferative responses of lymphocytes obtained from Mor-treated mice to Con A. Studies of the mechanism of suppression show that macrophages are the primary target cells, since macrophage-depleted lymphocyte preparations produced little suppression, and that prostaglandin E2 and reactive oxygen intermediates (ROI) are important mediators possessing immunoinhibitory activities, since indomethacin or scavengers of ROI abrogated the suppression. These results demonstrate that Mor-triggered release of inhibitory macrophage metabolites and decrement in soluble cytokines production are involved in the immunosuppressive effects caused by subchronic in vivo repetitive administrations of the drug of abuse.
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Affiliation(s)
- Z W Lu
- Department of Pharmacology, Beijing Medical University, Beijing, 100083, People's Republic of China.
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Dai WJ, Lu LM, Yao T. [Effects of gonadal steroid hormones on hypothalamic vasopressin mRNA level in male and female rats]. Sheng Li Xue Bao 1996; 48:557-63. [PMID: 9389154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Experiments were carried out in 10-11-week old gonadectomized male and female Sprague-Dawley rats. Dot-blot analysis and 3'-end digoxigenin-labeled 26 meroligonucleotide probe was used in detecting the mRNA level hypothalamic vasopressin (AVP). The basal hypothalamic AVP-mRNA level in the sham-operated intact males was 45% higher than that in the sham-operated intact females (P < 0.05). Plasma osmolality was also higher in the sham-operated intact males than in the sham-operated intact females (P < 0.05). The hypothalamic AVP-mRNA level in ovariectomized rats was 30% higher than that in sham-operated intact females (P < 0.05). Although the hypothalamic AVP mRNA level tended to be lower in castrated males than in sham-operated intact males, the difference was not statistically significant. The difference in plasma osmolality between gonadectomized males and females was statistically insignificant. In castrated males, hypothalamic AVP-mRNA level was decreased following sc injection of estradiol (P < 0.05), but testosterone, progesterone or a combination of estradiol and progesterone were without effect. In ovariectomized rats, sc injection of estradiol or a combination of estradiol and progesterone resulted in a decrease in hypothalamic AVP-mRNA level (P < 0.01), but progesterone or testosterone had no effect. The difference in plasma osmolality between gonadal steriod hormones-treated rats and vehicle-treated rats was not statistically significant. These findings indicate that gonadal steriod hormones can affect hypothalamic AVP-mRNA level in rats, through some central mechanism.
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Affiliation(s)
- W J Dai
- Department of Physiology, Shanghai Medical University
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Kopf M, Brombacher F, Hodgkin PD, Ramsay AJ, Milbourne EA, Dai WJ, Ovington KS, Behm CA, Köhler G, Young IG, Matthaei KI. IL-5-deficient mice have a developmental defect in CD5+ B-1 cells and lack eosinophilia but have normal antibody and cytotoxic T cell responses. Immunity 1996; 4:15-24. [PMID: 8574848 DOI: 10.1016/s1074-7613(00)80294-0] [Citation(s) in RCA: 474] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Mice deficient in interleukin-5 (IL-5-/- mice) were generated by gene targeting in embryonal stem cells. Contrary to previous studies, no obligatory role for IL-5 was demonstrated in the regulation of conventional B (B-2) cells, in normal T cell-dependent antibody responses or in cytotoxic T cell development. However, CD5+ B cells (B-1 cells) in the peritoneal cavity were reduced by 50%-80% in 2-week-old IL-5-/- mice, returning to normal by 6-8 weeks of age. The IL-5-/- mice did not develop blood and tissue eosinophilia when infected with the helminth Mesocestoides corti, but basal levels of eosinophils with normal morphology were produced in the absence of IL-5. IL-5 deficiency did not affect the worm burden of infected mice, indicating that increased eosinophils do not play a significant role in the host defence in this parasite model.
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Affiliation(s)
- M Kopf
- Max Planck Institut für Immunbiologie, Freiburg, Federal Republic of Germany
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Abstract
Experiments were carried out on 9- to 11-week-old male and female Sprague-Dawley rats. Dot-blot analysis and 3'-end digoxigenin-labeled 26mer oligonucleotide probe were used in the investigation of vasopressin (AVP) mRNA level in the hypothalamus of male and female rats. The normal hypothalamic AVP-mRNA level in males was 48% higher than that in females (P < 0.05). Plasma osmolality was also higher in males than in females (P < 0.05). In dehydrated rats, the hypothalamic AVP-mRNA level was 2.47 and 1.98 times in females (P < 0.001) and males (P < 0.01), respectively, as much as in their normal controls; the difference in hypothalamic AVP-mRNA level between dehydrated females and males was statistically insignificant. Plasma osmolality was higher in dehydrated females than in dehydrated males (P < 0.01). In salt-loaded rats, hypothalamic AVP-mRNA level was 2.47 and 2.17 times in females (P < 0.001) and males (P < 0.01), respectively, as much as in their controls. The difference in hypothalamic AVP-mRNA level between salt-loaded males and females was not statistically significant. Plasma osmolality in salt-loaded females was also higher than that in salt-loaded males (P < 0.001). These findings indicate that there is sex difference in hypothalamic AVP mRNA level and plasma osmolality under normal conditions; during dehydration and salt-loading AVP mRNA level increases and the difference in AVP mRNA level between males and females becomes insignificant.
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Affiliation(s)
- W J Dai
- Department of Physiology, Shanghai Medical University, People's Republic of China
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Wei JQ, Wei JL, Lucarelli C, Zhou XT, Wang DQ, Dai WJ, Li S, Li SM, Liu RT. Serum steroid hormonal profiles by reversed-phase liquid chromatography in patients with 17-hydroxylase deficiency and in an affected family. Clin Chem 1992; 38:76-82. [PMID: 1310267] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
We used an optimized isocratic reversed-phase high-performance liquid-chromatographic procedure to separate and measure 12 steroid hormones, and studied the steroid hormone profiles in sera from three patients with 17-hydroxylase deficiency (17-OHD). Two of the patients were sisters, one of whom (II-3), expressing normotension and primary amenorrhea, was diagnosed on the basis of chromatographic data and followed up for seven years. The untreated patients had obvious abnormalities on chromatograms of serum extracts, characterized by markedly increased corticosterone (B) and decreased or undetectable cortisol (F) and cortisone (E). The concentration of 11-deoxycorticosterone was much greater in the patient with classical symptoms than in the normotensive patient. In all three patients, concentrations of aldosterone were within the normal range, but concentrations of progesterone were much lower than in the patients with 21-hydroxylase deficiency. We evaluated the responses to corticotropin and dexamethasone. HPLC evaluation of the serum steroid profiles before and after corticotropin stimulation in the affected family showed that in the parents and one other sibling, concentrations of F before and after stimulation were within the normal ranges. The sums of the ratio of B to F before and the ratio of B to F after corticotropin stimulation (sigma B/F) in the parents and the other sibling were 0.292, 0.496, and 0.614, respectively, all much higher than the normal value (mean +/- SD: 0.164 +/- 0.038). Thus the sigma B/F value may be a hormonal marker of heterozygotes carrying this defect.
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Affiliation(s)
- J Q Wei
- Department of Endocrinology, Affiliated Hospital of Shandong Medical University, Jinan, People's Republic of China
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Shen GX, Dai WJ, Wang XL, Su N, Zhu HF, Ye WX, Li JW. [Studies on double-labelling method for determination of T lymphocyte subpopulations]. J Tongji Med Univ 1991; 11:248-52. [PMID: 1819036 DOI: 10.1007/bf02888161] [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] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
In order to determine the concurrent expression of DR and CD antigen of T lymphocyte surface markers, the fluorescence-rosette double-labelling technique was developed by employing monoclonal antibody against HLA-DR and sensitized sheep erythrocytes with OKT series of monoclonal antibodies against cell surface antigen. Its reliability was evaluated by comparison with two-step isolating technique for determining DR antigen of activated T lymphocyte subsets in 30 healthy volunteers. The result showed there was no statistic difference between results determined with two methods. The double-labelling technique was characterized by its samplity, no injury for cellular activity and ability for analysing the expression of the single antigen and double antigens on cell surface concurrently.
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Affiliation(s)
- G X Shen
- Research Center of Experimental Medicine, Tongji Medical University, Wuhan
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