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Hamid MA. Knowledge, Attitude and Practice towards Dengue Fever: a Study among the Inhabitants of Cumilla Cantonment area of Bangladesh. Mymensingh Med J 2023; 32:1169-1177. [PMID: 37777917] [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: 10/02/2023]
Abstract
Dengue ruins a major public health challenge causing death among many people in Bangladesh. The magnitude of dengue-related illness and death has significantly increased over recent years. The study was conducted to assess the level of knowledge, attitude, and practices related to dengue fever. This cross-sectional type of descriptive study was conducted among a total of 250 respondents who consented to participate in this study. Respondents were included purposively from selected bushy Cumilla Cantonment area also classified as a stable dengue-prone region of Bangladesh from January 2023 to March 2023. The survey was carried out by face-to-face interviews using a pre-tested semi-structured questionnaire. The results reveal that 81.2% of respondents were below 40 years of age group, 74.8% of respondents were married and 72.8% of respondents were in the below monthly 35000tk income group. Only 77.0% of respondents had good knowledge scores and 61.0% had positive attitudes and 75.0% had good compliance with practices. Knowledge was not significantly associated with type of residence, marital status, income group and age group (p>0.05 in every aspect). Transmission of dengue about more than two-thirds (84%) reported that the Aedes aegypti was a vector mosquito for dengue transmission and 27(10.8%) were aware of the biting time of the mosquito. Most participants (81.6%) strongly agreed that dengue is a serious illness and less than half (40.8%) reported that it could be prevented with vector control strategies. The majority (98.4%) used mosquito nets as a preventive measure, while over two-thirds (87.6%) reported that they discarded waste, containers and non-used bottles across their yards that hold water. Although the respondents had quite a positive attitude toward preventive measures regarding dengue (61.0%) and a sizeable number (39.0%) did not put proper attitude into practice. Poorly planned urbanization combined with an explosive urban population in the Cumilla Cantonment area has brought the mosquito and the human host into close proximity. The government should launch health education programs on dengue prevention to educate the community members, addressing misconceptions about their preventive measures and how they could eliminate the risk factors related to practices.
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Affiliation(s)
- M A Hamid
- Colonel Dr Md Abdul Hamid, Head of the Department of Community Medicine, Army Medical College Cumilla & ADMS 33 Inf. Division, Cumillla, Cantonment, Bangladesh; E-mail:
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Abd Hamid M, Colin-york H, Khalid-alham N, Browne M, Cerundolo L, Chen J, Yao X, Rosendo-machado S, Waugh C, Maldonado-perez D, Bowes E, Verrill C, Cerundolo V, Conlon CP, Fritzsche M, Peng Y, Dong T. Supplementary Movie Titles and Legends from Self-Maintaining CD103<sup>+</sup> Cancer-Specific T Cells Are Highly Energetic with Rapid Cytotoxic and Effector Responses.. [DOI: 10.1158/2326-6066.22543759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
<p>Titles and Legends for Movies 1-4</p>
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3
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Peng Y, Felce SL, Dong D, Penkava F, Mentzer AJ, Yao X, Liu G, Yin Z, Chen JL, Lu Y, Wellington D, Wing PAC, Dominey-Foy DCC, Jin C, Wang W, Hamid MA, Fernandes RA, Wang B, Fries A, Zhuang X, Ashley N, Rostron T, Waugh C, Sopp P, Hublitz P, Beveridge R, Tan TK, Dold C, Kwok AJ, Rich-Griffin C, Dejnirattisa W, Liu C, Kurupati P, Nassiri I, Watson RA, Tong O, Taylor CA, Kumar Sharma P, Sun B, Curion F, Revale S, Garner LC, Jansen K, Ferreira RC, Attar M, Fry JW, Russell RA, Stauss HJ, James W, Townsend A, Ho LP, Klenerman P, Mongkolsapaya J, Screaton GR, Dendrou C, Sansom SN, Bashford-Rogers R, Chain B, Smith GL, McKeating JA, Fairfax BP, Bowness P, McMichael AJ, Ogg G, Knight JC, Dong T. An immunodominant NP 105-113-B*07:02 cytotoxic T cell response controls viral replication and is associated with less severe COVID-19 disease. Nat Immunol 2022; 23:50-61. [PMID: 34853448 PMCID: PMC8709787 DOI: 10.1038/s41590-021-01084-z] [Citation(s) in RCA: 92] [Impact Index Per Article: 46.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 10/26/2021] [Indexed: 11/11/2022]
Abstract
NP105-113-B*07:02-specific CD8+ T cell responses are considered among the most dominant in SARS-CoV-2-infected individuals. We found strong association of this response with mild disease. Analysis of NP105-113-B*07:02-specific T cell clones and single-cell sequencing were performed concurrently, with functional avidity and antiviral efficacy assessed using an in vitro SARS-CoV-2 infection system, and were correlated with T cell receptor usage, transcriptome signature and disease severity (acute n = 77, convalescent n = 52). We demonstrated a beneficial association of NP105-113-B*07:02-specific T cells in COVID-19 disease progression, linked with expansion of T cell precursors, high functional avidity and antiviral effector function. Broad immune memory pools were narrowed postinfection but NP105-113-B*07:02-specific T cells were maintained 6 months after infection with preserved antiviral efficacy to the SARS-CoV-2 Victoria strain, as well as Alpha, Beta, Gamma and Delta variants. Our data show that NP105-113-B*07:02-specific T cell responses associate with mild disease and high antiviral efficacy, pointing to inclusion for future vaccine design.
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Affiliation(s)
- Yanchun Peng
- MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
- Chinese Academy of Medical Science Oxford Institute, University of Oxford, Oxford, UK
| | - Suet Ling Felce
- Chinese Academy of Medical Science Oxford Institute, University of Oxford, Oxford, UK
- Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Danning Dong
- MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
- Chinese Academy of Medical Science Oxford Institute, University of Oxford, Oxford, UK
- CAMS Key Laboratory of Tumor Immunology and Radiation Therapy, Xinjiang Tumor Hospital, Xinjiang Medical University, Urumqi, China
| | - Frank Penkava
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| | - Alexander J Mentzer
- Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Xuan Yao
- Chinese Academy of Medical Science Oxford Institute, University of Oxford, Oxford, UK
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Guihai Liu
- Chinese Academy of Medical Science Oxford Institute, University of Oxford, Oxford, UK
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
- Beijing You'an Hospital, Capital Medical University, Beijing, China
| | - Zixi Yin
- MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
- Chinese Academy of Medical Science Oxford Institute, University of Oxford, Oxford, UK
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Ji-Li Chen
- MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
- Chinese Academy of Medical Science Oxford Institute, University of Oxford, Oxford, UK
| | - Yongxu Lu
- Department of Pathology, University of Cambridge, Cambridge, UK
| | - Dannielle Wellington
- MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
- Chinese Academy of Medical Science Oxford Institute, University of Oxford, Oxford, UK
| | - Peter A C Wing
- Chinese Academy of Medical Science Oxford Institute, University of Oxford, Oxford, UK
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Delaney C C Dominey-Foy
- Chinese Academy of Medical Science Oxford Institute, University of Oxford, Oxford, UK
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Chen Jin
- Chinese Academy of Medical Science Oxford Institute, University of Oxford, Oxford, UK
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Wenbo Wang
- Chinese Academy of Medical Science Oxford Institute, University of Oxford, Oxford, UK
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Megat Abd Hamid
- Chinese Academy of Medical Science Oxford Institute, University of Oxford, Oxford, UK
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Ricardo A Fernandes
- Chinese Academy of Medical Science Oxford Institute, University of Oxford, Oxford, UK
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Beibei Wang
- Chinese Academy of Medical Science Oxford Institute, University of Oxford, Oxford, UK
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Anastasia Fries
- Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Xiaodong Zhuang
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Neil Ashley
- Single Cell Facility, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Timothy Rostron
- Sequencing Facility, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Craig Waugh
- Flow Cytometry Facility, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Paul Sopp
- Flow Cytometry Facility, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Philip Hublitz
- Genome Engineering Facility, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Ryan Beveridge
- Virus Screening Facility, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Tiong Kit Tan
- MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - Christina Dold
- Oxford Vaccine Group, Department of Paediatrics, and NIHR Oxford Biomedical Research Centre, Centre for Clinical Vaccinology and Tropical Medicine, University of Oxford, Oxford, UK
| | - Andrew J Kwok
- Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | | | - Wanwisa Dejnirattisa
- Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Chang Liu
- Chinese Academy of Medical Science Oxford Institute, University of Oxford, Oxford, UK
- Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Prathiba Kurupati
- MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - Isar Nassiri
- Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK
- Department of Oncology, University of Oxford, Oxford, UK
- MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Robert A Watson
- Department of Oncology, University of Oxford, Oxford, UK
- MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Orion Tong
- Department of Oncology, University of Oxford, Oxford, UK
- MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Chelsea A Taylor
- Department of Oncology, University of Oxford, Oxford, UK
- MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Piyush Kumar Sharma
- Department of Oncology, University of Oxford, Oxford, UK
- MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Bo Sun
- Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK
| | - Fabiola Curion
- Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK
- Helmholtz Center Munich-German Research Center for Environmental Health, Institute of Computational Biology, Neuherberg, Germany
| | - Santiago Revale
- Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK
| | - Lucy C Garner
- MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
- Translational Gastroenterology Unit, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Kathrin Jansen
- Kennedy Institute for Rheumatology, University of Oxford, Oxford, UK
| | | | - Moustafa Attar
- Kennedy Institute for Rheumatology, University of Oxford, Oxford, UK
| | | | - Rebecca A Russell
- Sir William Dunn School of Pathology, University of Oxford, Oxford, UK
| | - Hans J Stauss
- Institute of Immunity and Transplantation, University College London, London, UK
| | - William James
- James & Lillian Martin Centre, Sir William Dunn School of Pathology, University of Oxford, Oxford, UK
| | - Alain Townsend
- MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
- Chinese Academy of Medical Science Oxford Institute, University of Oxford, Oxford, UK
| | - Ling-Pei Ho
- MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - Paul Klenerman
- Translational Gastroenterology Unit, Nuffield Department of Medicine, University of Oxford, Oxford, UK
- Peter Medawar Building for Pathogen Research, University of Oxford, Oxford, UK
| | - Juthathip Mongkolsapaya
- Chinese Academy of Medical Science Oxford Institute, University of Oxford, Oxford, UK
- Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
- Dengue Hemorrhagic Fever Research Unit, Office for Research and Development, Faculty of Medicine, Siriaj Hospital, Mahidol Unviversity, Bangkok, Thailand
| | - Gavin R Screaton
- Chinese Academy of Medical Science Oxford Institute, University of Oxford, Oxford, UK
- Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Calliope Dendrou
- Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK
| | - Stephen N Sansom
- Kennedy Institute for Rheumatology, University of Oxford, Oxford, UK
| | | | - Benny Chain
- Division of Infection and Immunity, University College London, London, UK
| | | | - Jane A McKeating
- Chinese Academy of Medical Science Oxford Institute, University of Oxford, Oxford, UK
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Benjamin P Fairfax
- Department of Oncology, University of Oxford, Oxford, UK
- MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Paul Bowness
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| | - Andrew J McMichael
- Chinese Academy of Medical Science Oxford Institute, University of Oxford, Oxford, UK
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Graham Ogg
- MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
- Chinese Academy of Medical Science Oxford Institute, University of Oxford, Oxford, UK
| | - Julian C Knight
- Chinese Academy of Medical Science Oxford Institute, University of Oxford, Oxford, UK.
- Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK.
- Nuffield Department of Medicine, University of Oxford, Oxford, UK.
| | - Tao Dong
- MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK.
- Chinese Academy of Medical Science Oxford Institute, University of Oxford, Oxford, UK.
- Nuffield Department of Medicine, University of Oxford, Oxford, UK.
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4
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Asciak R, Kanellakis NI, Yao X, Abd Hamid M, Mercer RM, Hassan M, Bedawi EO, Dobson M, Fsadni P, Montefort S, Dong T, Rahman NM, Psallidas I. Pleural Fluid Has Pro-Growth Biological Properties Which Enable Cancer Cell Proliferation. Front Oncol 2021; 11:658395. [PMID: 33996582 PMCID: PMC8115017 DOI: 10.3389/fonc.2021.658395] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 03/15/2021] [Indexed: 12/14/2022] Open
Abstract
Objectives Patients with malignant pleural mesothelioma (MPM) or pleural metastases often present with malignant pleural effusion (MPE). This study aimed to analyze the effect of pleural fluid on cancer cells. Materials and Methods Established patient-derived cancer cell cultures derived from MPE (MPM, breast carcinoma, lung adenocarcinoma) were seeded in 100% pleural fluid (exudate MPM MPE, transudate MPE, non-MPE transudate fluid) and proliferation was monitored. In addition, the establishment of new MPM cell cultures, derived from MPE specimens, was attempted by seeding the cells in 100% MPE fluid. Results All established cancer cell cultures proliferated with similar growth rates in the different types of pleural fluid. Primary MPM cell culture success was similar with MPE fluid as with full culture medium. Conclusions Pleural fluid alone is adequate for cancer cell proliferation in vitro, regardless of the source of pleural fluid. These results support the hypothesis that pleural fluid has important pro-growth biological properties, but the mechanisms for this effect are unclear and likely not malignant effusion specific.
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Affiliation(s)
- Rachelle Asciak
- Oxford Centre for Respiratory Medicine, Churchill Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom.,Laboratory of Pleural and Lung Cancer Translational Research, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom.,Mater Dei Hospital, Msida, Malta
| | - Nikolaos I Kanellakis
- Oxford Centre for Respiratory Medicine, Churchill Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom.,Laboratory of Pleural and Lung Cancer Translational Research, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom.,National Institute for Health Research Oxford Biomedical Research Centre, University of Oxford, Oxford, United Kingdom.,Chinese Academy of Medical Sciences Oxford Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Xuan Yao
- Chinese Academy of Medical Sciences Oxford Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom.,MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, United Kingdom
| | - Megat Abd Hamid
- Chinese Academy of Medical Sciences Oxford Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom.,MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, United Kingdom
| | - Rachel M Mercer
- Oxford Centre for Respiratory Medicine, Churchill Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
| | - Maged Hassan
- Oxford Centre for Respiratory Medicine, Churchill Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
| | - Eihab O Bedawi
- Oxford Centre for Respiratory Medicine, Churchill Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
| | - Melissa Dobson
- Oxford Respiratory Trials Unit, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | | | | | - Tao Dong
- Chinese Academy of Medical Sciences Oxford Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom.,MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, United Kingdom
| | - Najib M Rahman
- Oxford Centre for Respiratory Medicine, Churchill Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom.,Laboratory of Pleural and Lung Cancer Translational Research, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom.,National Institute for Health Research Oxford Biomedical Research Centre, University of Oxford, Oxford, United Kingdom.,Oxford Respiratory Trials Unit, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Ioannis Psallidas
- Oxford Centre for Respiratory Medicine, Churchill Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom.,Laboratory of Pleural and Lung Cancer Translational Research, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom.,Research and Early Development, Respiratory & Immunology, AstraZeneca, Cambridge, United Kingdom
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5
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Yao X, Abd Hamid M, Sundaralingam A, Evans A, Karthikappallil R, Dong T, Rahman NM, Kanellakis NI. Clinical perspective and practices on pleural effusions in chronic systemic inflammatory diseases. Breathe (Sheff) 2020; 16:200203. [PMID: 33447289 PMCID: PMC7792825 DOI: 10.1183/20734735.0203-2020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Systemic inflammatory diseases are a heterogeneous family of autoimmune chronic inflammatory disorders that affect multiple systems within the human body. Connective tissue disease (CTD) is a large group within this family characterised by immune-mediated inflammation of the connective tissue. This group of disorders are often associated with pleural manifestations. CTD-induced pleuritis exhibits a wide variety of symptoms and signs including exudative pleural effusions and chest pain. Accurate estimation of prevalence for CTD-related pleuritis is challenging as small effusions are asymptomatic and remain undetected. Rheumatoid arthritis and systemic lupus erythematosus are frequent CTDs and present with pleural pathology in approximately 5–20% and 17–60% of cases, respectively. By contrast, pleural involvement in systemic sclerosis, eosinophilia–myalgia syndrome, mixed connective tissue disease, ankylosing spondylitis, polymyositis and dermatomyositis syndrome is rare. Clinical management depends on the severity of symptoms; however, most effusions resolve spontaneously. In this review we discuss the pathophysiological mechanisms and the clinical considerations of CTD-induced pleuritis. Chronic inflammatory diseases could cause pleural pathology. Clinical management depends on the severity of symptoms, but most effusions resolve spontaneously.https://bit.ly/333euHb
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Affiliation(s)
- Xuan Yao
- Chinese Academy of Medical Sciences Oxford Institute, Nuffield Dept of Medicine, University of Oxford, Oxford, UK.,MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK.,Both authors contributed equally
| | - Megat Abd Hamid
- Chinese Academy of Medical Sciences Oxford Institute, Nuffield Dept of Medicine, University of Oxford, Oxford, UK.,MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK.,Both authors contributed equally
| | - Anand Sundaralingam
- Oxford Centre for Respiratory Medicine, Churchill Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Alice Evans
- Laboratory of Pleural and Lung Cancer Translational Research, Nuffield Dept of Medicine, University of Oxford, Oxford, UK
| | - Roshan Karthikappallil
- Laboratory of Pleural and Lung Cancer Translational Research, Nuffield Dept of Medicine, University of Oxford, Oxford, UK
| | - Tao Dong
- Chinese Academy of Medical Sciences Oxford Institute, Nuffield Dept of Medicine, University of Oxford, Oxford, UK.,MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Najib M Rahman
- Oxford Centre for Respiratory Medicine, Churchill Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, UK.,Laboratory of Pleural and Lung Cancer Translational Research, Nuffield Dept of Medicine, University of Oxford, Oxford, UK.,National Institute for Health Research Oxford Biomedical Research Centre, University of Oxford, Oxford, UK.,Oxford Respiratory Trials Unit, Nuffield Dept of Medicine, University of Oxford, Oxford, UK
| | - Nikolaos I Kanellakis
- Oxford Centre for Respiratory Medicine, Churchill Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, UK.,Laboratory of Pleural and Lung Cancer Translational Research, Nuffield Dept of Medicine, University of Oxford, Oxford, UK.,National Institute for Health Research Oxford Biomedical Research Centre, University of Oxford, Oxford, UK.,Oxford Respiratory Trials Unit, Nuffield Dept of Medicine, University of Oxford, Oxford, UK
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6
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Kanellakis NI, Asciak R, Hamid MA, Yao X, McCole M, McGowan S, Seraia E, Hatch S, Hallifax RJ, Mercer RM, Bedawi EO, Jones S, Verrill C, Dobson M, George V, Stathopoulos GT, Peng Y, Ebner D, Dong T, Rahman NM, Psallidas I. Patient-derived malignant pleural mesothelioma cell cultures: a tool to advance biomarker-driven treatments. Thorax 2020; 75:1004-1008. [PMID: 32943495 PMCID: PMC7569377 DOI: 10.1136/thoraxjnl-2020-215027] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 07/03/2020] [Accepted: 07/14/2020] [Indexed: 12/17/2022]
Abstract
Malignant pleural mesothelioma (MPM) is an aggressive cancer, associated with poor prognosis. We assessed the feasibility of patient-derived cell cultures to serve as an ex vivo model of MPM. Patient-derived MPM cell cultures (n=16) exhibited stemness features and reflected intratumour and interpatient heterogeneity. A subset of the cells were subjected to high-throughput drug screening and coculture assays with cancer-specific cytotoxic T cells and showed diverse responses. Some of the biphasic MPM cells were capable of processing and presenting the neoantigen SSX-2 endogenously. In conclusion, patient-derived MPM cell cultures are a promising and faithful ex vivo model of MPM.
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Affiliation(s)
- Nikolaos I Kanellakis
- Oxford Centre for Respiratory Medicine, Churchill Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom .,Laboratory of Pleural and Lung Cancer Translational Research, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom.,National Institute for Health Research Oxford Biomedical Research Centre, University of Oxford, Oxford, United Kingdom.,Oxford Respiratory Trials Unit, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Rachelle Asciak
- Oxford Centre for Respiratory Medicine, Churchill Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom.,Laboratory of Pleural and Lung Cancer Translational Research, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom.,Oxford Respiratory Trials Unit, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Megat Abd Hamid
- Chinese Academy of Medical Sciences Oxford Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom.,MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, United Kingdom
| | - Xuan Yao
- Chinese Academy of Medical Sciences Oxford Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom.,MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, United Kingdom
| | - Mark McCole
- Cellular Pathology Department, John Radcliffe Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
| | - Simon McGowan
- Computational Biology Research Group, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, United Kingdom
| | - Elena Seraia
- Cellular High Throughput Screening Facility, Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Oxford, Oxfordshire, United Kingdom
| | - Stephanie Hatch
- Cellular High Throughput Screening Facility, Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Oxford, Oxfordshire, United Kingdom
| | - Rob J Hallifax
- Oxford Centre for Respiratory Medicine, Churchill Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom.,Oxford Respiratory Trials Unit, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Rachel M Mercer
- Oxford Centre for Respiratory Medicine, Churchill Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom.,Oxford Respiratory Trials Unit, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Eihab O Bedawi
- Oxford Centre for Respiratory Medicine, Churchill Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom.,Oxford Respiratory Trials Unit, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Stephanie Jones
- Oxford Radcliffe Biobank, Nuffield Department of Surgical Sciences, University of Oxford, Oxford, United Kingdom
| | - Clare Verrill
- Oxford Radcliffe Biobank, Nuffield Department of Surgical Sciences, University of Oxford, Oxford, United Kingdom
| | - Melissa Dobson
- Oxford Respiratory Trials Unit, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Vineeth George
- Oxford Centre for Respiratory Medicine, Churchill Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom.,Oxford Respiratory Trials Unit, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Georgios T Stathopoulos
- Molecular Lung Carcinogenesis Group, Comprehensive Pneumology Center and Institute for Lung Biology and Disease, Ludwig-Maximilians University and Helmholtz Center, Munich, Germany.,Laboratory for Molecular Respiratory Carcinogenesis, Department of Physiology, Faculty of Medicine, University of Patras, Patras, Greece
| | - Yanchun Peng
- Chinese Academy of Medical Sciences Oxford Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom.,MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, United Kingdom
| | - Daniel Ebner
- Cellular High Throughput Screening Facility, Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Oxford, Oxfordshire, United Kingdom
| | - Tao Dong
- Chinese Academy of Medical Sciences Oxford Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom.,MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, United Kingdom
| | - Najib M Rahman
- Oxford Centre for Respiratory Medicine, Churchill Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom.,Laboratory of Pleural and Lung Cancer Translational Research, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom.,National Institute for Health Research Oxford Biomedical Research Centre, University of Oxford, Oxford, United Kingdom.,Oxford Respiratory Trials Unit, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Ioannis Psallidas
- Oxford Centre for Respiratory Medicine, Churchill Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom.,Laboratory of Pleural and Lung Cancer Translational Research, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom.,Oxford Respiratory Trials Unit, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
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7
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Abd Hamid M, Peng Y, Dong T. Human cancer germline antigen-specific cytotoxic T cell-what can we learn from patient. Cell Mol Immunol 2020; 17:684-692. [PMID: 32451453 PMCID: PMC7331575 DOI: 10.1038/s41423-020-0468-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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: 04/08/2020] [Revised: 05/10/2020] [Accepted: 05/12/2020] [Indexed: 02/07/2023] Open
Abstract
In this review, we will highlight the importance of cancer germline antigen-specific cytotoxic CD8+ T lymphocytes (CTL) and the factors affecting antitumor CTL responses. In light of cancer immunotherapy, we will emphasis the need to further understand the features, characteristics, and actions of modulatory receptors of human cancer germline-specific CTLs, in order to determine the optimal conditions for antitumor CTL responses.
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Affiliation(s)
- Megat Abd Hamid
- Nufield Department of Medicine, Chinese Academy of Medical Science Oxford Institute (COI), University of Oxford, Oxford, UK
| | - Yanchun Peng
- Nufield Department of Medicine, Chinese Academy of Medical Science Oxford Institute (COI), University of Oxford, Oxford, UK.,MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Tao Dong
- Nufield Department of Medicine, Chinese Academy of Medical Science Oxford Institute (COI), University of Oxford, Oxford, UK. .,MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK.
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8
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Abd Hamid M, Colin-York H, Khalid-Alham N, Browne M, Cerundolo L, Chen JL, Yao X, Rosendo-Machado S, Waugh C, Maldonado-Perez D, Bowes E, Verrill C, Cerundolo V, Conlon CP, Fritzsche M, Peng Y, Dong T. Self-Maintaining CD103 + Cancer-Specific T Cells Are Highly Energetic with Rapid Cytotoxic and Effector Responses. Cancer Immunol Res 2020; 8:203-216. [PMID: 31771983 PMCID: PMC7611226 DOI: 10.1158/2326-6066.cir-19-0554] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 09/19/2019] [Accepted: 11/15/2019] [Indexed: 11/16/2022]
Abstract
Enrichment of CD103+ tumor-infiltrating T lymphocytes (TIL) is associated with improved outcomes in patients. However, the characteristics of human CD103+ cytotoxic CD8+ T cells (CTL) and their role in tumor control remain unclear. We investigated the features and antitumor mechanisms of CD103+ CTLs by assessing T-cell receptor (TCR)-matched CD103+ and CD103- cancer-specific CTL immunity in vitro and its immunophenotype ex vivo Interestingly, we found that differentiated CD103+ cancer-specific CTLs expressed the active form of TGFβ1 to continually self-regulate CD103 expression, without relying on external TGFβ1-producing cells. The presence of CD103 on CTLs improved TCR antigen sensitivity, which enabled faster cancer recognition and rapid antitumor cytotoxicity. These CD103+ CTLs had elevated energetic potential and faster migration capacity. However, they had increased inhibitory receptor coexpression and elevated T-cell apoptosis following prolonged cancer exposure. Our data provide fundamental insights into the properties of matured human CD103+ cancer-specific CTLs, which could have important implications for future designs of tissue-localized cancer immunotherapy strategies.
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Affiliation(s)
- Megat Abd Hamid
- Chinese Academy of Medical Sciences (CAMS) Oxford Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
- Medical Research Council (MRC) Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Huw Colin-York
- Medical Research Council (MRC) Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Nasullah Khalid-Alham
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, United Kingdom
- Oxford National Institute of Health Research (NIHR) Biomedical Research Centre, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
| | - Molly Browne
- Nuffield Department of Surgical Sciences, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
| | - Lucia Cerundolo
- Nuffield Department of Surgical Sciences, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
| | - Ji-Li Chen
- Medical Research Council (MRC) Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Xuan Yao
- Chinese Academy of Medical Sciences (CAMS) Oxford Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
- Medical Research Council (MRC) Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Samara Rosendo-Machado
- Medical Research Council (MRC) Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Craig Waugh
- Flow Cytometry Facility, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, United Kingdom
| | - David Maldonado-Perez
- Nuffield Department of Surgical Sciences, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
| | - Emma Bowes
- Nuffield Department of Surgical Sciences, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
| | - Clare Verrill
- Oxford National Institute of Health Research (NIHR) Biomedical Research Centre, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
- Nuffield Department of Surgical Sciences, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
| | - Vincenzo Cerundolo
- Chinese Academy of Medical Sciences (CAMS) Oxford Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
- Medical Research Council (MRC) Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Christopher P Conlon
- Chinese Academy of Medical Sciences (CAMS) Oxford Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Marco Fritzsche
- Medical Research Council (MRC) Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
- Kennedy Institute of Rheumatology, University of Oxford, Oxford, United Kingdom
| | - Yanchun Peng
- Chinese Academy of Medical Sciences (CAMS) Oxford Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
- Medical Research Council (MRC) Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Tao Dong
- Chinese Academy of Medical Sciences (CAMS) Oxford Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom.
- Medical Research Council (MRC) Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
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9
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Abd Hamid M, Yao X, Waugh C, Rosendo-Machado S, Li C, Rostron T, Frankland J, Peng Y, Dong T. Defective Interferon Gamma Production by Tumor-Specific CD8 + T Cells Is Associated With 5'Methylcytosine-Guanine Hypermethylation of Interferon Gamma Promoter. Front Immunol 2020; 11:310. [PMID: 32194559 PMCID: PMC7066077 DOI: 10.3389/fimmu.2020.00310] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 02/07/2020] [Indexed: 12/15/2022] Open
Abstract
Interferon gamma (IFNγ) supports effector responses of CD8+ cytotoxic T lymphocytes (CTLs) and is a surrogate marker for detection of antigen-specific T cells. Here, we show that tumor-specific CTL clones have impaired IFNγ expression and production upon activation. Assessment of the relationship between IFNγ production and the 5'methylcytosine-guanine (CpG) dinucleotide methylation of the IFNγ promoter using bisulfite treatment has shown that IFNγ- CTL clones accumulates CpG hypermethylation within the promoter at key transcription factor binding sites (-186 and -54), known to be vital for transcription. We confirmed these findings using ex vivo isolated and short-term expanded bulk tumor-specific CTL lines from four cancer patients and demonstrated that IFNγ methylation inversely correlates with transcription, protein level, and cytotoxicity. Altogether, we propose that a sizeable portion of human tumor-specific CTLs are deficient in IFNγ response, contributed by CpG hypermethylation of the IFNγ promoter. Our findings have important implications for immunotherapy strategies and for methods to detect human antigen-specific T cells.
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Affiliation(s)
- Megat Abd Hamid
- 1Chinese Academy of Medical Sciences (CAMS) Oxford Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
- 2Medical Research Council (MRC) Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Xuan Yao
- 1Chinese Academy of Medical Sciences (CAMS) Oxford Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
- 2Medical Research Council (MRC) Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Craig Waugh
- 3Flow Cytometry Facility, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, United Kingdom
| | - Samara Rosendo-Machado
- 2Medical Research Council (MRC) Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Chris Li
- 2Medical Research Council (MRC) Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Timothy Rostron
- 4Sequencing Facility, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, United Kingdom
| | - John Frankland
- 4Sequencing Facility, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, United Kingdom
| | - Yanchun Peng
- 1Chinese Academy of Medical Sciences (CAMS) Oxford Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
- 2Medical Research Council (MRC) Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Tao Dong
- 1Chinese Academy of Medical Sciences (CAMS) Oxford Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
- 2Medical Research Council (MRC) Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
- *Correspondence: Tao Dong
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Abd Hamid M, Wang RZ, Yao X, Fan P, Li X, Chang XM, Feng Y, Jones S, Maldonado-Perez D, Waugh C, Verrill C, Simmons A, Cerundolo V, McMichael A, Conlon C, Wang X, Peng Y, Dong T. Enriched HLA-E and CD94/NKG2A Interaction Limits Antitumor CD8 + Tumor-Infiltrating T Lymphocyte Responses. Cancer Immunol Res 2019; 7:1293-1306. [PMID: 31213473 DOI: 10.1158/2326-6066.cir-18-0885] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [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: 12/10/2018] [Revised: 03/06/2019] [Accepted: 06/13/2019] [Indexed: 11/16/2022]
Abstract
Immunotherapy treatments with anti-PD-1 boost recovery in less than 30% of treated cancer patients, indicating the complexity of the tumor microenvironment. Expression of HLA-E is linked to poor clinical outcomes in mice and human patients. However, the contributions to immune evasion of HLA-E, a ligand for the inhibitory CD94/NKG2A receptor, when expressed on tumors, compared with adjacent tissue and peripheral blood mononuclear cells, remains unclear. In this study, we report that epithelial-derived cancer cells, tumor macrophages, and CD141+ conventional dendritic cells (cDC) contributed to HLA-E enrichment in carcinomas. Different cancer types showed a similar pattern of enrichment. Enrichment correlated to NKG2A upregulation on CD8+ tumor-infiltrating T lymphocytes (TIL) but not on CD4+ TILs. CD94/NKG2A is exclusively expressed on PD-1high TILs while lacking intratumoral CD103 expression. We also found that the presence of CD94/NKG2A on human tumor-specific T cells impairs IL2 receptor-dependent proliferation, which affects IFNγ-mediated responses and antitumor cytotoxicity. These functionalities recover following antibody-mediated blockade in vitro and ex vivo Our results suggest that enriched HLA-E:CD94/NKG2A inhibitory interaction can impair survival of PD-1high TILs in the tumor microenvironment.
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Affiliation(s)
- Megat Abd Hamid
- CAMS-Oxford International Centre for Translational Immunology, CAMS Oxford Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Ruo-Zheng Wang
- Chinese Academy of Medical Sciences (CAMS) Key Laboratory of Tumor Immunology and Radiation Therapy, Third Affiliated Hospital, Xinjiang Tumor Hospital, Urumqi, China.
- Third Affiliated Hospital, Xinjiang Tumor Hospital, Urumqi, China
| | - Xuan Yao
- CAMS-Oxford International Centre for Translational Immunology, CAMS Oxford Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Peiwen Fan
- Chinese Academy of Medical Sciences (CAMS) Key Laboratory of Tumor Immunology and Radiation Therapy, Third Affiliated Hospital, Xinjiang Tumor Hospital, Urumqi, China
- Third Affiliated Hospital, Xinjiang Tumor Hospital, Urumqi, China
| | - Xi Li
- CAMS-Oxford International Centre for Translational Immunology, CAMS Oxford Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Xue-Mei Chang
- Chinese Academy of Medical Sciences (CAMS) Key Laboratory of Tumor Immunology and Radiation Therapy, Third Affiliated Hospital, Xinjiang Tumor Hospital, Urumqi, China
- Third Affiliated Hospital, Xinjiang Tumor Hospital, Urumqi, China
| | - Yaning Feng
- Chinese Academy of Medical Sciences (CAMS) Key Laboratory of Tumor Immunology and Radiation Therapy, Third Affiliated Hospital, Xinjiang Tumor Hospital, Urumqi, China
- Third Affiliated Hospital, Xinjiang Tumor Hospital, Urumqi, China
| | - Stephanie Jones
- Oxford Radcliffe Biobank, Department of Cellular Pathology, Oxford University Hospitals NHS Trust, Oxford, United Kingdom
| | - David Maldonado-Perez
- Oxford Radcliffe Biobank, Department of Cellular Pathology, Oxford University Hospitals NHS Trust, Oxford, United Kingdom
- Oxford NIHR Biomedical Research Centre, Nuffield Department of Surgical Sciences, University of Oxford, Oxford, United Kingdom
| | - Craig Waugh
- Flow Cytometry Facility, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, United Kingdom
| | - Clare Verrill
- Oxford Radcliffe Biobank, Department of Cellular Pathology, Oxford University Hospitals NHS Trust, Oxford, United Kingdom
- Oxford NIHR Biomedical Research Centre, Nuffield Department of Surgical Sciences, University of Oxford, Oxford, United Kingdom
| | - Alison Simmons
- CAMS-Oxford International Centre for Translational Immunology, CAMS Oxford Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Vincenzo Cerundolo
- CAMS-Oxford International Centre for Translational Immunology, CAMS Oxford Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Andrew McMichael
- CAMS-Oxford International Centre for Translational Immunology, CAMS Oxford Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Christopher Conlon
- CAMS-Oxford International Centre for Translational Immunology, CAMS Oxford Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Xiyan Wang
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
- Third Affiliated Hospital, Xinjiang Tumor Hospital, Urumqi, China
| | - Yanchun Peng
- CAMS-Oxford International Centre for Translational Immunology, CAMS Oxford Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Tao Dong
- CAMS-Oxford International Centre for Translational Immunology, CAMS Oxford Institute, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom.
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
- Chinese Academy of Medical Sciences (CAMS) Key Laboratory of Tumor Immunology and Radiation Therapy, Third Affiliated Hospital, Xinjiang Tumor Hospital, Urumqi, China
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Abstract
The study was designed to evaluate the insemination time and pregnancy rate of Bangladeshi buffalo at Lal Teer Livestock Breeding and Research Farm, Bhaluka, Mymensingh, Bangladesh during January 2017 to June 2018. A total of 30 cyclic buffaloes were included in this study. The animals were inseminated under four different times, i.e. inseminated i) between 0-6 hours after seeing first sign of estrous, ii) between 6-12 hours after seeing first sign of estrous, iii) between 12-18 hours after seeing first sign of estrous and v) between 18-24 hours after seeing first sign of estrous. The pregnancies (positive or negative) were confirmed by rectal palpation and transrectal ultrasonography after 60 days of artificial insemination (AI). The total pregnant animals in this study were 40%. The highest pregnancy rate (60%) was observed in insemination between 12-18 hours after seeing first sign of estrous and the lowest pregnancy rate (0%) was observed in insemination between 0-6 hours after seeing first sign of estrous. The findings of the study suggest that, the conception rate of buffalo depend on the time of AI, detection of proper estrus symptoms and site of semen deposition.
SAARC J. Agri., 16(2): 143-152 (2018)
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12
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Hamid MA, Jackson RJ, Roy S, Khanna M, Ranasinghe C. Unexpected involvement of IL-13 signalling via a STAT6 independent mechanism during murine IgG2a development following viral vaccination. Eur J Immunol 2018; 48:1153-1163. [PMID: 29569714 DOI: 10.1002/eji.201747463] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 02/12/2018] [Accepted: 03/12/2018] [Indexed: 11/07/2022]
Abstract
In this study, recombinant pox viral vaccination was shown to induce highly elevated IgG2a and low IgG1 antibody expression in mice lacking IL-4 or STAT6, whilst IL-13-/- mice exhibited elevated IgG1, but very low IgG2a. These findings revealed that IL-13 and IL-4 differentially regulated antibody development. To understand this further, when STAT6-/- mice were given a vaccine co-expressing IL-13Rα2 that temporarily sequestered IL-13, significantly reduced IgG2a expression, was detected. These findings for the first time demonstrated that IL-13 regulated IgG2a differentiation utilising an alternative IL-13R signalling pathway independent of STAT6 (IL-13Rα2 pathway). This was further corroborated by the (i) elevated IL-13Rα2 expression detected on STAT6-/- lung MHCII+ CD11c+ cells 24 h post IL-13 inhibitor vaccination and ii) significant up-regulation of IL-13Rα2 expression on spleen and lung derived MHCII+ CD11c+ following inhibition of STAT6 signalling in vitro, or vaccination with IL-4R/STAT6 antagonist in vivo. When T follicular helper (Tfh) cells which regulate antibody differentiation were assessed post vaccination, although no difference in IL-4 expression was observed, greatly reduced IFN-γ expression was detected in IL-13-/- and STAT6-/- mice compared to wild-type. These findings support the notion that the balance of IL-13 level at the vaccination site can differentially regulate T and B-cell immune outcomes.
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Affiliation(s)
- Megat Abd Hamid
- Molecular Mucosal Vaccine Immunology Group, Department of Immunology and infectious Disease, The John Curtin School of Medical Research, The Australian National University, Canberra, Australia.,MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Ronald James Jackson
- Molecular Mucosal Vaccine Immunology Group, Department of Immunology and infectious Disease, The John Curtin School of Medical Research, The Australian National University, Canberra, Australia
| | - Sreeja Roy
- Molecular Mucosal Vaccine Immunology Group, Department of Immunology and infectious Disease, The John Curtin School of Medical Research, The Australian National University, Canberra, Australia
| | - Mayank Khanna
- Molecular Mucosal Vaccine Immunology Group, Department of Immunology and infectious Disease, The John Curtin School of Medical Research, The Australian National University, Canberra, Australia
| | - Charani Ranasinghe
- Molecular Mucosal Vaccine Immunology Group, Department of Immunology and infectious Disease, The John Curtin School of Medical Research, The Australian National University, Canberra, Australia
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Bhatti JA, Rafique I, Azad A, Hamid MA, Saqib MAN, Qureshi H. Possible doubling of road traffic injury burden in Pakistan: findings from a population-based survey in 2013-2014. Public Health 2017; 150:166-169. [PMID: 28806617 DOI: 10.1016/j.puhe.2017.07.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 06/29/2017] [Accepted: 07/06/2017] [Indexed: 10/19/2022]
Affiliation(s)
- J A Bhatti
- Sunnybrook Research Institute, Evaluative Clinical Science, Toronto, Canada; University of Toronto, Department of Surgery, Toronto, Canada; Institute for Clinical Evaluative Sciences, Toronto, Canada.
| | - I Rafique
- Pakistan Health Research Council, Islamabad, Pakistan
| | - A Azad
- Hamad Medical Corporation, Department of Emergency Medicine, Doha, Qatar
| | - M A Hamid
- Scarborough and Rouge Hospital, Toronto, Canada; University of Toronto, Department of Pediatrics, Toronto, Canada
| | - M A N Saqib
- Pakistan Health Research Council, Islamabad, Pakistan
| | - H Qureshi
- Pakistan Health Research Council, Islamabad, Pakistan
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15
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Bakr I, Rekacewicz C, El Hosseiny M, Ismail S, El Daly M, El-Kafrawy S, Esmat G, Hamid MA, Mohamed MK, Fontanet A. Higher clearance of hepatitis C virus infection in females compared with males. Gut 2006; 55:1183-7. [PMID: 16434426 PMCID: PMC1856273 DOI: 10.1136/gut.2005.078147] [Citation(s) in RCA: 99] [Impact Index Per Article: 5.5] [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] [Indexed: 02/06/2023]
Abstract
BACKGROUND AND AIMS According to the literature, 14-46% of subjects clear hepatitis C virus (HCV) from blood after infection. Controversy exists about sex differences in HCV clearance rates. PATIENTS AND METHODS We compared HCV clearance in males and females using data from a large population based study on HCV infection in Egypt. Definitions used in the paper were: cleared HCV infection (positive HCV antibody and negative HCV RNA test results) and chronic HCV infection (positive HCV antibody and positive HCV RNA test results). The study sample included 4720 village residents aged 18-65 years recruited through home based visits (n = 2425) or voluntary screening (n = 2295). RESULTS Overall, HCV antibody prevalence was 910/4720 (19.3% (95% confidence interval 18.2-20.4)). Of those with HCV antibodies (n = 910), 61.5% had chronic HCV infection. Compared with males, females were more likely to have cleared the virus (44.6% v 33.7%, respectively; p = 0.001). Control for age, schistosomiasis history, iatrogenic exposures, and sexual exposure to HCV did not alter the positive association between female sex and viral clearance. CONCLUSION This study provides strong evidence in favour of a higher HCV clearance rate in females compared with males.
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Affiliation(s)
- I Bakr
- Department of Community, Environmental, and Occupational Medicine, Faculty of Medicine, Ain Shams University, Cairo, Egypt
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16
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O'Gorman CS, Hamid MA, Fox GPP. Universal neonatal hearing screening. Ir Med J 2005; 98:86-7. [PMID: 15869068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
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17
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Banu S, Mollah FH, Alam MK, Rahman MA, Hamid MA, Wahab MA, Arslan MI. Serum homocysteine concentration in patients with acute MI and chronic IHD. Mymensingh Med J 2005; 14:54-7. [PMID: 15695956] [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: 05/01/2023]
Abstract
This was an observational study carried out in the Department of Biochemistry, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka; with the active co-operation of Coronary Care Unit (CCU) of BSMMU & National Institute of Cardiovascular Disease (NICVD), Dhaka. This study was carried out from March 2002 to January 2003. Total seventy (70) subjects were studied. Out of them 20 were of Acute MI, 20 were Chronic ischemic heart disease (CHD) and 30 were age and sex matched healthy controls. Hospitalized diagnosed patients were selected by taking history, clinical examination and several investigations like ECG. Echocardiogram, Angiogram and several enzymes assay. Several studies in many countries showed that serum homocysteine (Hcy) was elevated in IHD Patient. Cardiovascular disease is alarmingly increasing in Bangladesh. So our aim and objective of the study was to find out the association of serum Hcy with Acute MI and chronic ischemic heart disease (CHD) patients in our population. Mean Hcy level of Acute MI were 21.16 +/- 4.56 (micromol/l), 27.55 +/- 10.40 (micromol/l) and that of control was 13.03 +/- 10.51(micromol/l). Serum Hcy was significantly higher in both cases than control. But insignificant difference was found between AMI vs CHD (P> 0.05). Quantitative measurement of serum Hcy was measured by fluorescence polarization Immunoassay (FPIA) in IMX analyzer (Abbott-USA).
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Affiliation(s)
- S Banu
- Dept. of Biochemistry, Shahabuddin Medical Collage, Gulsan, Dhaka
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18
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Sallam SA, Arafa MA, Razek AA, Naga M, Hamid MA. Device-related nosocomial infection in intensive care units of Alexandria University Students Hospital. East Mediterr Health J 2005; 11:52-61. [PMID: 16532671] [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: 05/07/2023]
Abstract
We studied the magnitude and determinants of device-related nosocomial infections in intensive care units (ICU) and identified the predominant microorganisms involved. Sputum, urine, blood cultures and chest X-ray were taken from each patient on admission and on appearance of any sign/symptom of infection. Out of 400 patients admitted to 3 units during the study, 45 (11.3%) developed nosocomial infections. The most important determinants of infection were previous admission to an ICU, whether in the same or another hospital, and duration of stay. Overall, 38 patients developed 43 device-related nosocomial infections (1.13 episodes per patient). The main infectied association with invasive procedures were ventilator-associated pneumonia followed by catheter-related urinary tract infection and bloodstream infections.
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MESH Headings
- Adolescent
- Adult
- Aged
- Aged, 80 and over
- Catheterization, Central Venous/adverse effects
- Catheterization, Central Venous/instrumentation
- Catheters, Indwelling/adverse effects
- Catheters, Indwelling/microbiology
- Child
- Cross Infection/epidemiology
- Cross Infection/etiology
- Cross Infection/transmission
- Egypt/epidemiology
- Equipment Contamination/statistics & numerical data
- Female
- Hospitals, University
- Humans
- Infection Control
- Intensive Care Units
- Intubation, Intratracheal/adverse effects
- Intubation, Intratracheal/instrumentation
- Length of Stay/statistics & numerical data
- Logistic Models
- Male
- Middle Aged
- Patient Readmission/statistics & numerical data
- Population Surveillance
- Risk Factors
- Surveys and Questionnaires
- Urinary Catheterization/adverse effects
- Urinary Catheterization/instrumentation
- Ventilators, Mechanical/adverse effects
- Ventilators, Mechanical/microbiology
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Affiliation(s)
- S A Sallam
- Department of Epidemiology, High Institute of Public Health, Faculty of Medicine, University of Alexandria, Alexandria, Egypt
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19
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20
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Affiliation(s)
- M A Hamid
- Cleveland Hearing and Balance Center, Cleveland, Ohio, USA
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21
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Shahin AA, Sabri YY, Mostafa HA, Sabry EY, Hamid MA, Gamal H, Shahin HA. Pulmonary function tests, high-resolution computerized tomography, α1-antitrypsin measurement, and early detection of pulmonary involvement in patients with systemic sclerosis. Rheumatol Int 2001; 20:95-100. [PMID: 11354564 DOI: 10.1007/s002960000089] [Citation(s) in RCA: 9] [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] [Indexed: 10/27/2022]
Abstract
OBJECTIVE Pulmonary disease represents a major complication of systemic sclerosis (SSc). However, pulmonary involvement is commonly silent. In this study, we investigated the relationship between serum alpha1-antitrypsin and other means of assessing pulmonary involvement. METHODS Twenty-two patients affected by SSc were studied (mean age 37.6+/-14.3 years, mean duration of disease 9.9+/-11.9 years). Fourteen had the diffuse form of disease (dSSc) and eight had the limited form (lSSc). All patients underwent pulmonary function tests, high-resolution computed tomography (HRCT) of the lungs, echocardiography, and serum assessment of alpha1-antitrypsin. RESULTS Mean percentage of predicted values of forced vital capacity was lower in patients with dSSc than with lSSc (72.3+/-17.8 vs 74.5+/-8, P=NS). Mean percentage of predicted values of forced expiratory volume in 1-s forced vital capacity (FEV1/FVC) was lower in patients with lSSc (79.8+/-7.5 for lSSc vs 84.4+/-7.8 for dSSc, P= NS). The overall HRCT score was 5.6+/-5.9 with no significant difference between disease subgroups. Pulmonary hypertension was detected in two cases, both with dSSc. Alpha1-antitrypsin was significantly higher in patients than in controls (P < 0.01), with no significant difference between disease subgroups, and correlated significantly with ground glass opacities in H RCT (P < 0.05) and the detection of diffusion defects (r= -0.61, P<0.01). No significant correlation was observed between skin score or degree of dyspnea with HRCT score, lung volume, or carbon monoxide diffusing capacity. CONCLUSION Restrictive lung disease was more pronounced in patients with dSSc. Alpha1-antitrypsin levels correlated significantly with ground glass opacities, an early finding of pulmonary involvement in SSc. Extent and severity of skin involvement and degree of dyspnea were not related to pulmonary involvement.
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Affiliation(s)
- A A Shahin
- Department of Rheumatology and Rehabilitation, Faculty of Medicine, Kasr Eleini Hospital, Cairo University, Egypt.
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22
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Shahin AA, Anwar S, Elawar AH, Sharaf AE, Hamid MA, Eleinin AA, Eltablawy M. Circulating soluble adhesion molecules in patients with systemic sclerosis: correlation between circulating soluble vascular cell adhesion molecule-1 (sVCAM-1) and impaired left ventricular diastolic function. Rheumatol Int 2000; 20:21-4. [PMID: 11149656 DOI: 10.1007/s002960000072] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [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: 10/27/2022]
Abstract
The objective of this paper is to investigate the relation between circulating soluble adhesion molecules and cardiac involvement, as assessed by echocardiography in patients with systemic sclerosis (SSc). Nineteen patients with SSc were submitted for assessment of serum levels of circulating soluble intercellular adhesion molecules (sICAM-1), and soluble vascular cell adhesion molecules-1 (sVCAM-1), and echocardiography. Abnormal left ventricular filling patterns (down E/A ratio) were detected in ten patients (52.6%) with significant negative correlation with sVCAM-1 (r = -0.484, P < 0.05). It was also significantly correlated with age (r = -0.791, P < 0.01), age of onset (r = -0.468, P < 0.05), degree of dyspnea (r = -0.687, P < 0.01), and erythrocyte sedimentation rate (ESR) (r = -0.489, P < 0.05). Our findings suggest an important role for sVCAM-1 as a marker of disease severity and impaired left ventricular filling pattern in SSc.
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Affiliation(s)
- A A Shahin
- Department of Rheumatology and Rehabilitation, Faculty of Medicine, Cairo University, Egypt.
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23
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Furman JM, Goebel JA, Hamid MA, Hanson J, Honrubia V, Peterka R, Schumann T, Shephard NT, Stockwell CW, Wall C. Interlaboratory variability of rotational chair test results II: analysis of simulated data. Otolaryngol Head Neck Surg 2000; 122:23-30. [PMID: 10629478 DOI: 10.1016/s0194-5998(00)70139-2] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Standardization of rotational chair testing across laboratories has not been achieved because of differences in test protocol and analysis algorithms. The Interlaboratory Rotational Chair Study Group was formed to investigate these differences. Its first study demonstrated significant variability in calculated results using actual patient data files. No estimation of accuracy could be made, however, because the "true" values of response parameters were unknown. In this study we used simulated "patient" data files to further explore the differences among analysis algorithms. We found a high degree of agreement and accuracy across laboratories using automated analysis of high signal-to-noise/low-artifact data for gain, phase, and asymmetry. Variability increased significantly for the lower signal-to-noise ratio/higher artifact files. Operator intervention generally improved accuracy and decreased variability, but there were cases in which operator intervention reduced accuracy.
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Affiliation(s)
- J M Furman
- Department of Otolaryngology, University of Pittsburgh School of Medicine, Pittsburgh, USA
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24
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Affiliation(s)
- C Sam
- Evans Department of Medicine, Boston University School of Medicine, Boston Medical Center, Mallory Institute of Pathology, Massachusetts, USA
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25
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Kinney WC, Wallace RC, Ross JS, Kinney SE, Hamid MA. Retrospective blinded review of magnetic resonance imaging in patients with central electronystagmography findings. Am J Otol 1998; 19:341-4. [PMID: 9596186] [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: 02/07/2023]
Abstract
OBJECTIVE To evaluate the magnetic resonance imaging results (MRI) of patients with electronystagmography (ENG) suggestive of central vestibular dysfunction and to determine if MRI abnormalities correlate with ENG findings. STUDY DESIGN Retrospective blinded case review. SETTING A regional neurotology center. PATIENTS Patients with ENG suggesting central vestibular dysfunction were identified (n = 30). An age-matched group of patients with normal ENG results were used as controls (n = 28). MAIN OUTCOME MEASURES MRI abnormalities in cerebellum, brain stem, cerebellar peduncles, and central ENG findings. RESULTS Twenty-one patients with abnormal MRI results of the vestibular pathway were found, 15 with abnormal and 6 with normal ENG results. MRI correlation with ENG findings has a better predictive value in older patients than in younger patients. Sixteen patients had MRI evidence of vascular compression, seven of whom had abnormal and nine of whom had normal ENG results. CONCLUSIONS This study suggests that a detailed review of MRI images of the vestibular pathway is warranted, and, in patients with central ENG abnormalities, MRI may support the diagnosis of central vestibular dysfunction. MRI cannot support central vestibular dysfunction caused by vascular compression.
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Affiliation(s)
- W C Kinney
- Department of Otolaryngology, The Cleveland Clinic Foundation, Ohio, USA
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26
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Hamid MA. Dynamic Posturography; To the Editor. Otolaryngol Head Neck Surg 1996; 114:842-3. [PMID: 8643321 DOI: 10.1016/s0194-59989670123-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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27
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Groenen G, Saha NG, Rashid MA, Hamid MA, Pattyn SR. Classification of leprosy cases under field conditions in Bangladesh. I. Usefulness of skin-smear examinations. LEPROSY REV 1995; 66:126-33. [PMID: 7637523 DOI: 10.5935/0305-7518.19950014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [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: 01/26/2023]
Abstract
In 2 non-governmental organization projects in Bangladesh 244 new leprosy patients were classified in the field according to clinical criteria. Skin smears were taken at 4 standardized sites and at the most active peripheral lesion, where a biopsy was also taken. Comparison of the clinical field classification with the results of the skin smears and biopsies gives a sensitivity of 92.1% for the clinical criteria, but a specificity of only 41.3%. The skin-smear results, on the other hand, have a sensitivity of 88.4% and a specificity of 98.1%. Thus, skin smears may contribute considerably to the operational classification of leprosy patients under field conditions. Quality control of the peripheral laboratory is essential. Appropriate site selection for the smear taking will also contribute to increased performance. Analysis of the skin-smear results suggests that the policy of taking smears at standardized sites should be abandoned in favour of the earlobes and active peripheral lesions.
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28
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Groenen G, Saha NG, Rashid MA, Hamid MA, Pattyn SR. Classification of leprosy cases under field conditions in Bangladesh. II. Reliability of clinical criteria. LEPROSY REV 1995; 66:134-43. [PMID: 7637524 DOI: 10.5935/0305-7518.19950015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
In 2 non-governmental organization projects 244 new leprosy patients in Bangladesh were classified in the field according to clinical criteria i.e. number of skin lesions and number of enlarged nerves. Comparison of these classification results with the results of skin smears and biopsies yielded a sensitivity (for detection of a MB case) of 92.1%, but the 'unconfirmed MB rate' amounted to 52.6%. In order to improve the reliability of the operational classification, several additional clinical criteria were investigated. It was found that neither the presence of anaesthesia in the skin lesions nor the presence of grade 2 disabilities or peripheral anaesthesia or voluntary muscle testing (VMT) impairment contributed to an improved classification. Counting the number of body areas showing signs of leprosy, which had proven very useful in other programmes, did not result in a more reliable classification in the 2 projects in Bangladesh. The presence of clinical signs of lepromatous leprosy, more specifically nodules or diffuse infiltration, could be a useful addition to the classification criteria. If the sensitivity must remain higher than 90%, the lowest 'unconfirmed MB rate' obtainable in Bangladesh, using clinical criteria only, is 46.4%, for a sensitivity of 91.0%. However, the inclusion of skin-smear results in the classification criteria could improve the sensitivity to 96.6% and lower the 'unconfirmed MB rate' to 40.3%. A reduction in MB overclassification will result in more efficient and more cost-effective leprosy control programmes.
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29
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Hamid MA. Effects of head position on posture during altered visual and proprioceptive orientation: preliminary report. J Vestib Res 1994; 4:481-3. [PMID: 7850043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- M A Hamid
- Department of Otolaryngology and Communicative Disorders, Cleveland Clinic Foundation, Ohio 44195
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30
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Hamid MA, Iwaku M, Hoshino E. The metabolism of phenylalanine and leucine by a cell suspension of Eubacterium brachy and the effects of metronidazole on metabolism. Arch Oral Biol 1994; 39:967-72. [PMID: 7695510 DOI: 10.1016/0003-9969(94)90080-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [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: 01/26/2023]
Abstract
Degradation of phenylalanine and leucine by resting cells of Eubacterium brachy ATCC 33089 were studied under strict anaerobic conditions. The effects of metronidazole and air on the metabolism were also studied. The organism principally produced phenylpropionate and isocaproate from phenylalanine and leucine, respectively. Other products were cinnamate and phenylacetate from phenylalanine, and alpha-ketoisocaproate and isovalerate from leucine. The organism also produced hydroxylated end-products, i.e. phenyllactate from phenylalanine and hydroxyisocaproate from leucine. When metronidazole was added to the reaction mixture, the production of phenylpropionate, cinnamate, phenylacetate, isocaproate, alpha-ketoisocaproate and isovalerate was inhibited, while that of hydroxylated products was not, suggesting that the organism has metronidazole-sensitive and -tolerant pathways of metabolism. A similar inhibitory effect was also found when the reaction was done aerobically, suggesting that the inhibitory mode of metronidazole is similar to that of oxygen.
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Affiliation(s)
- M A Hamid
- Department of Operative Dentistry, Niigata University School of Dentistry, Japan
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31
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Affiliation(s)
- M A Hamid
- Department of Otolaryngology, Cleveland Clinic Foundation, OH 44195
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32
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Furman JM, Goebel JA, Hamid MA, Hanson J, Honrubia V, Peterka R, Schumann T, Shephard NT, Stockwell CW, Wall C. Interlaboratory variability of rotational chair test results. Interlaboratory Rotational Chair Study Group. Otolaryngol Head Neck Surg 1994; 110:400-5. [PMID: 8170684 DOI: 10.1177/019459989411000409] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [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: 01/29/2023]
Abstract
Test-retest reliability of rotational chair testing for a single facility has previously been examined by others. The actual data analysis methods, however, have received far less attention. The variety of both hardware and software currently used theoretically may affect the results for a given subject tested at different facilities. The purposes of this study were, first, to quantify the amount of variability in the analysis of identical raw data files at multiple rotational chair testing facilities by using automated analysis; second, to evaluate the effect of operator intervention on the analysis; and third, to identify possible sources of variability. Raw data were collected from 10 normal subjects at 0.05 Hz and 0.5 Hz (50 degrees per second peak velocity). Diskettes containing raw electro-oculogram data files were then distributed to eight participating laboratories for analysis by two methods: (1) using automated analysis algorithms and (2) using the same algorithms but allowing operator intervention into the analysis. Response parameters calculated were gain and phase (re: velocity). The SD of gain values per subject for automated analysis ranged from 0.01 to 0.32 gain units and of phase values from 0.4 to 13.7 degrees. For analysis with operator intervention, the SD of gain values ranged from 0.02 to 0.10 gain units and of phase values from 0.4 to 4.4 degrees. The difference between automated analysis and analysis with operator intervention was significant for gain calculations (p < 0.02) but not for phase calculations (p > 0.05). This study demonstrates significant variability in automated analysis of rotational chair raw data for gain and phase.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- J M Furman
- Department of Otolaryngology Head and Neck Surgery, Washington University School of Medicine, St. Louis, MO 63110
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Rotmensch EJ, Kasznica J, Hamid MA. Immunohistochemical analysis of hormone receptors and proliferating cell nuclear antigen in aggressive angiomyxoma of the vulva. Int J Gynaecol Obstet 1993; 41:171-9. [PMID: 8099033 DOI: 10.1016/0020-7292(93)90701-w] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [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: 01/28/2023]
Abstract
OBJECTIVE Aggressive angiomyxoma (AA) is a frequently misdiagnosed tumor which tends to locally recur. The purpose of our case study and review is to characterize this tumor by immunohistochemical analysis of its estrogen and progesterone status and its proliferating capacity by proliferating cell nuclear antigen (PCNA), as well as, note any recurrent sites of spread. METHOD A 43 year old woman presented with a suspected Bartholin's gland abscess. Physical examination was consistent with a mass in the left labium majus. Marsupialization of the mass failed. Resection of this tumor revealed an AA with positive tumor margins. Lost to follow up, the patient was located 6 months later. Examination revealed a palpable mass in the ischiorectal fossa. Extended-left, radical hemivulvectomy revealed recurrent tumor. Estrogen and progesterone receptor status was weakly positive. PCNA stained with the same intensity as the fibroconnective, tissue background. CONCLUSION We report on a case of AA as well as examine the literature to review a total of 32 cases. We note that AA is often misdiagnosed and tends to recur in the ischiorectal and retroperitoneal spaces. By means of immunohistochemical analysis, we conclude: the estrogen and progesterone receptor status was weakly positive, but could not be distinguished from the background-fibroblastic tissue, PCNA correlates well in this tumor with its low mitotic index; however, further similar studies are needed to characterize this tumor. This may aid in treatment.
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Affiliation(s)
- E J Rotmensch
- Department of Obstetrics and Gynecology, Boston University School of Medicine, Massachusetts
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34
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Hamid MA, Munib AA, Ahmed SK. Psychiatric morbidity in cancer patients. Bangladesh Med Res Counc Bull 1993; 19:15-20. [PMID: 8257398] [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: 01/29/2023]
Abstract
One hundred and two patients of cancer were studied by two stage screening methods to detect the psychiatric morbidity in these patients. The General Health Questionnaire (60 item version) was used to detect the psychiatric morbidity. The psychiatric diagnosis was made according to DSM-IIIR criteria. Eighty seven patients (85.29%) were found to have psychiatric illness, depression being the commonest illness (45.10%). Anxiety disorder was present among 18.63% and other minor emotional disorders in 21.56%. Fifteen patients (14.71%) were found to be free from any psychiatric symptoms.
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Affiliation(s)
- M A Hamid
- Dept. of Psychiatry, Institute of Postgraduate Medicine and Research, Dhaka
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35
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Abstract
Determining side of vestibular lesion remains a challenging task during neurotologic investigations, particularly if auditory lateralizing signs are absent. Traditionally, absent or decreased caloric response has been regarded as evidence of unilateral vestibular deficit. But, the inability of the chair test to detect side of lesion has been generally accepted because rotation stimulates both end organs. A retrospective study postulated and tested a hypothesis that low-frequency asymmetry of sinusoidal harmonic acceleration (SHA) testing can determine side of lesion when phase is abnormal. The present prospective, double-blind study was designed to further test the retrospective study hypothesis. Results showed that SHA asymmetry detects side of unilateral vestibular deficit when phase is abnormal in 97% of cases.
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Affiliation(s)
- M A Hamid
- Section of Vestibular and Balance Disorders, Cleveland Clinic Foundation, OH 44106-4712
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36
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Affiliation(s)
- M A Hamid
- Department of Otolaryngology and Communicative Disorders, Cleveland Clinic Foundation, Ohio
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Abstract
The motion sickness syndrome constitutes varying degrees of subjective motion intolerance and three objective findings: hyperactive VOR (79%), hip sway strategy (60%), and positional nystagmus (42%). It is present in subjects who have a strong history of motion sickness. Vestibular rehabilitation appears to help control symptoms. The study also suggests an inheritance pattern, but a structured pedigree could not be constructed. Prospective studies are warranted to further establish the patterns of the motion sickness syndrome.
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Affiliation(s)
- M A Hamid
- Department of Otolaryngology, Cleveland Clinic Foundation, OH 44132
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38
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Hamid MA. Clinical value of sinusoidal harmonic acceleration test results. Site of lesion and side of lesion. Neurol Clin 1990; 8:287-95. [PMID: 2193212] [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: 12/30/2022]
Abstract
Sinusoidal harmonic acceleration tests can be used reliably to determine site and side of lesion. Results from 6000 patients collected over the past 10 years have shown that the temporal pattern of asymmetry can be reliably used to differentiate peripheral from central vestibular dysfunction. Peripheral cases tend to have a high level of asymmetry, with temporal regression to normal range, and a high correlation with patient symptoms. Central cases tend to have a low level of variable asymmetry and variable symptoms. In either case, phase can be abnormal or normal and cannot be reliably used to differentiate peripheral from central dysfunction. By combining phase and symmetry, the side of the lesion can be reliably determined. When phase is abnormal, asymmetry is toward the side of the lesion in 92 per cent of cases, whereas when phase is normal, asymmetry cannot be reliably used to determine side of lesion. SHA testing has contributed significantly to our clinical ability to fully evaluate the vestibular system and has become an indispensable part of the complete vestibular laboratory. It requires a relatively large patient load as well as software and hardware support to become a cost-effective utility.
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Affiliation(s)
- M A Hamid
- Department of Otolaryngology and Communicative Disorders, Cleveland Clinic Foundation, Ohio
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39
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Abstract
The methods described in this paper are based on the uricase catalyzed oxidation of uric acid to allantoine and hydrogen peroxide. By making use of the catalytic activity of peroxidase the generated H2O2 is measured either spectrophotometrically with 3-methyl-benzothiazoline-2-one hydrazone (MBTH) and 3-dimethylaminobenzoic acid (DMAB) (M1) or fluorimetrically with tyramine (M2) or L-tyrosine (M3). The methods are simple, sensitive and selective. The procedures developed can be rapidly and readily performed on patient serum samples without deproteinization using 100 microliters and 5 microliters for colorimetric and fluorimetric assay, respectively.
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Affiliation(s)
- K A Kovar
- Pharmazeutisches Institut der Universität Tübingen, FRG
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Edelin KC, Gurganious L, Golar K, Oellerich D, Kyei-Aboagye K, Hamid MA. Methadone maintenance in pregnancy: Consequences to care and outcome. Int J Gynaecol Obstet 1989. [DOI: 10.1016/0020-7292(89)90748-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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41
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Tigani AE, Fox E, Hamid MA, Arabi MA, Rasmi H, Burans JP, Morrill JC, Woody JN. Status of AIDS in Khartoum in 1986. East Afr Med J 1988; 65:874-5. [PMID: 3234279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Abstract
This study correlates ENG and MRI findings in six patients with cerebellar eye movements. For each subject, both tests independently support the presence of a cerebellar tract abnormality. In two patients, MRI studies confirmed the site of cerebellar dysfunction previously demonstrated by ENG. Although the number of patients is small, the strong correlation (100%) indicates that ENG remains a sensitive method for detection and localization of the origin of cerebellar eye movements. The physiologic information provided by ENG is supported anatomically by MRI. The cerebellar eye movement abnormalities are briefly reviewed.
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Affiliation(s)
- M A Hamid
- Section of Vestibular and Balance Disorders, Cleveland Clinic, OH
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Abstract
This article reviews the authors' experience with autoimmune endolymphatic hydrops over the past 5 years. Twenty-seven of 52 patients with diagnosed autoimmune inner ear disease (52%) manifested endolymphatic hydrops, usually bilateral. Treatment consisted of low salt diet, diuretic, vestibular suppressant, and usually prednisone. Cytotoxic drugs and lymphocytoplasmapheresis were reserved for refractory cases. Audiometric followup (average, 23 months) was available in 12 patients. Using American Academy of Otolaryngology--Head and Neck Surgery guidelines, hearing improved or stabilized in at least one ear in nine patients and deteriorated bilaterally in three patients. Vestibular treatment results paralleled auditory treatment results. Autoimmune endolymphatic hydrops should be considered in the differential diagnosis when symptoms are bilateral and do not respond to conventional therapy or when immune laboratory tests are positive. In suspect patients, medical therapy with prednisone, and rarely cytotoxic drugs and lymphocytoplasmapheresis, should be recommended. Further research is needed to determine whether surgery should be performed in medically unresponsive cases.
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Affiliation(s)
- G B Hughes
- Department of Otolaryngology and Communicative Disorders, Cleveland Clinic Foundation, OH 44106
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Leigh RJ, Sharpe JA, Ranalli PJ, Thurston SE, Hamid MA. Comparison of smooth pursuit and combined eye-head tracking in human subjects with deficient labyrinthine function. Exp Brain Res 1987; 66:458-64. [PMID: 3609193 DOI: 10.1007/bf00270678] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The effects of deficient labyrinthine function on smooth visual tracking with the eyes and head were investigated in ten patients with bilateral peripheral vestibular disease. Ten normal subjects served as controls. In the patients active, combined eye-head tracking (EHT) was significantly better than smooth pursuit (SP) with the eyes alone with a target frequency of 1.0 Hz. Normal subjects pursued equally well with SP and with active EHT. The gain of compensatory eye movements during active head rotation in darkness was also measured. Compensatory eye movements in labyrinthine-deficient patients (attributable to residual vestibulo-ocular reflex (VOR), cervico-ocular reflex (COR) and pre-programmed eye movements) were always less than in normal subjects. These data were used to examine current hypotheses that postulate central cancellation of the VOR (or compensatory eye movements) during EHT. A model that proposes summation of an internal smooth pursuit command and VOR/compensatory eye movements accounted for the findings in normal subjects and labyrinthine-deficient patients. In seven labyrinthine-deficient patients and nine normal subjects, passive EHT was measured during en bloc rotation while they viewed a head-fixed target. With a target frequency of 1.0 Hz, both subjects and patients showed significantly better tracking during passive EHT than during SP. Normal subjects also showed superior tracking during passive EHT compared with active EHT. These findings support the notion that during passive EHT, parametric gain changes contribute to modulation of the VOR.
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Abstract
Evoked potentials (EPs) have been used to detect auditory, visual, and somatosensory dysfunction. Evoked potentials are recorded by averaging an optimal number of responses (that are time-locked) to the same number of appropriate stimuli. Adequate stimulus levels and "minimal" response latency are necessary for recording evoked potentials. Vestibular evoked potentials have received considerably less attention because of the difficulty in providing appropriate stimuli, the relatively long latency of vestibular responses, and the adaptation of the vestibular system to repeated stimulation. Technological advances have made it possible to provide accurate stimuli by use of computer-controlled rotating chairs and computer-averaging procedures.
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46
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Hanson MR, Hamid MA, Tomsak RL, Chou SS, Leigh RJ. Selective saccadic palsy caused by pontine lesions: clinical, physiological, and pathological correlations. Ann Neurol 1986; 20:209-17. [PMID: 3752965 DOI: 10.1002/ana.410200206] [Citation(s) in RCA: 60] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Two patients suffered a selective deficit of voluntary saccades and quick phases of nystagmus after hypoxic-ischemic insults during open-heart surgery. All voluntary saccades, in both horizontal and vertical planes, were slow, and quick phases of vestibular and optokinetic nystagmus were absent. Smooth pursuit, the vestibuloocular reflex, the ability to hold steady eccentric gaze, and vergence eye movements were all preserved. Pathological studies in 1 patient confirmed neuronal necrosis and gliosis, consistent with ischemic lesions involving the median and paramedian pontine reticular formation and median basis pontis but sparing the rostral mesencephalon and rostral interstitial nucleus of the medial longitudinal fasciculus. These findings, taken with data from experimental studies, support the hypothesis that each functionally defined class of horizontal eye movements is controlled by a separate neural substrate that projects independently to the abducens nuclei. In addition, these data suggest that the rostral interstitial nucleus of the medial longitudinal fasciculus is dependent on inputs from the paramedian pontine reticular formation for the programming of normal vertical saccades.
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Hamid MA, Hughes GB, Kinney SE, Hanson MR. Results of sinusoidal harmonic acceleration test in one thousand patients: preliminary report. Otolaryngol Head Neck Surg 1986; 94:1-5. [PMID: 3081845 DOI: 10.1177/019459988609400101] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
One thousand patients with dizziness were tested by sinusoidal harmonic acceleration with frequencies of .01, .02, .04, .08, and .16 Hz. Two hundred fifty (25% of data base) were randomly selected for this study. One hundred forty-eight diagnoses were confirmed: 66 (45%) patients had a clinical diagnosis of peripheral vestibular dysfunction, 28 (19%) had central vestibular dysfunction, and 53 (36%) had dizziness of undetermined cause. This preliminary study investigated the response patterns of phase (latency), asymmetry (slow phase preponderance), and gain (output/input) as they correlated with each of the above patient groups. The main response pattern was a varying degree of asymmetry with normal or abnormal latency. Persistent abnormal phase pattern indicated permanent vestibular damage and could not be used reliably to differentiate peripheral from central vestibular dysfunction. Asymmetry changed with time and correlated with patients' symptoms. The dynamic pattern of asymmetry could be used to differentiate peripheral from central vestibular dysfunction. Gain was a reliable and essential measure of the sensitivity of the vestibular system and the validity of the rotational response.
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Abstract
Since 1981, 28 patients have been diagnosed with autoimmune inner ear disease. This preliminary, retrospective study reviews clinical and laboratory manifestations of autoimmune vestibular dysfunction. Sixteen of 28 patients presented with dizziness (7 vertigo, 8 lightheadedness, 1 ataxia). Twelve of these patients presented with Meniere's syndrome. Seven of 16 dizzy patients underwent formal vestibular testing. Five had reduced vestibular response in the involved ear(s); one patient had positional nystagmus only; and one had normal results. Of 17 patients with adequate follow-up, 11 presented with dizziness. Hearing improved and dizziness resolved in two patients following treatment. Hearing stabilized and dizziness resolved in two. Hearing stabilized but lightheadedness (without vertigo) persisted in five. Hearing was lost and oscillopsia resulted in two patients. Preliminary conclusions are vestibular dysfunction in autoimmune inner ear disease is nonspecific; bilateral vestibular dysfunction is more common; Meniere's syndrome is relatively common; medical management usually is helpful; surgery at this time does not seem appropriate; vestibular treatment results tend to parallel auditory treatment results.
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Edelin KC, Hamid MA. When to refer. Abnormal Pap smears. Hosp Pract (Off Ed) 1985; 20:23, 26-7, 30. [PMID: 3923001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Arabi MA, Ibrahim S, Hamid MA. Fibreoptic panendoscopy of the upper gastrointestinal tract in a tropical hospital. East Afr Med J 1984; 61:456-60. [PMID: 6336232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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