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Alghanmi M, Minshawi F, Altorki TA, Zawawi A, Alsaady I, Naser AY, Alwafi H, Alsulami SM, Azhari AA, Hashem AM, Alhabbab R. Helminth-derived proteins as immune system regulators: a systematic review of their promise in alleviating colitis. BMC Immunol 2024; 25:21. [PMID: 38637733 PMCID: PMC11025257 DOI: 10.1186/s12865-024-00614-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 03/30/2024] [Indexed: 04/20/2024] Open
Abstract
Helminth-derived proteins have immunomodulatory properties, influencing the host's immune response as an adaptive strategy for helminth survival. Helminth-derived proteins modulate the immune response by inducing anti-inflammatory cytokines, promoting regulatory T-cell development, and ultimately favouring a Th2-biased immune response. This systematic review focused on helminth-derived proteins and explored their impact on reducing inflammatory responses in mouse models of colitis. A systematic search across Medline, EMBASE, Web of Science, and Cochrane Library identified fourteen relevant studies. These studies reported immunomodulatory changes, including increased production of anti-inflammatory cells and cytokines. In mouse models of colitis treated with on helminth-derived proteins, significant improvements in pathological parameters such as body weight, colon length, and microscopic inflammatory scores were observed compared to control groups. Moreover, helminth-derived proteins can enhance the function of Tregs and alleviate the severity of inflammatory conditions. The findings underscore the pivotal role of helminth-derived proteins in immunomodulation, specifically in the axis of cytokine secretion and immune cell polarization. The findings offer new opportunities for treating chronic inflammatory conditions such Crohn's disease.
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Grants
- IFPRC-408160-290-2020 the Ministry of Education and King Abdulaziz University, Jeddah, Saudi Arabia
- IFPRC-408160-290-2020 the Ministry of Education and King Abdulaziz University, Jeddah, Saudi Arabia
- IFPRC-408160-290-2020 the Ministry of Education and King Abdulaziz University, Jeddah, Saudi Arabia
- IFPRC-408160-290-2020 the Ministry of Education and King Abdulaziz University, Jeddah, Saudi Arabia
- IFPRC-408160-290-2020 the Ministry of Education and King Abdulaziz University, Jeddah, Saudi Arabia
- IFPRC-408160-290-2020 the Ministry of Education and King Abdulaziz University, Jeddah, Saudi Arabia
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Affiliation(s)
- Maimonah Alghanmi
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia.
- Vaccines and Immunotherapy Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia.
| | - Faisal Minshawi
- Department of Laboratory Medicine, Faculty of Applied Medical Sciences, Umm Al-Qura University, Makkah, Saudi Arabia
- Vaccines and Immunotherapy Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Tarfa A Altorki
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
- Vaccines and Immunotherapy Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Ayat Zawawi
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
- Vaccines and Immunotherapy Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Isra Alsaady
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
- Special Infectious Agent Unit, King Fahad Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Abdallah Y Naser
- Department of Applied Pharmaceutical Sciences and Clinical Pharmacy, Faculty of Pharmacy, Isra University, Amman, Jordan
| | - Hassan Alwafi
- Faculty of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Soa'ad M Alsulami
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
- Vaccines and Immunotherapy Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
- Clinical and Molecular Microbiology Laboratories, King Abdulaziz University Hospital, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Ala A Azhari
- Vaccines and Immunotherapy Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
- Department of Clinical Microbiology and Immunology, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Anwar M Hashem
- Vaccines and Immunotherapy Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
- Department of Clinical Microbiology and Immunology, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Rowa Alhabbab
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
- Vaccines and Immunotherapy Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
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2
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Abdalal SA, Yukich J, Andrinopoulos K, Alghanmi M, Wakid MH, Zawawi A, Harakeh S, Altwaim SA, Gattan H, Baakdah F, Gaddoury MA, Niyazi HA, Mokhtar JA, Alruhaili MH, Alsaady I, Alhabbab R, Alfaleh M, Hashem AM, Alahmadey ZZ, Keating J. Livelihood activities, human mobility, and risk of malaria infection in elimination settings: a case-control study. Malar J 2023; 22:53. [PMID: 36782234 PMCID: PMC9926773 DOI: 10.1186/s12936-023-04470-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 01/24/2023] [Indexed: 02/15/2023] Open
Abstract
BACKGROUND Livelihood activities and human movements participate in the epidemiology of vector-borne diseases and influence malaria risk in elimination settings. In Saudi Arabia, where malaria transmission intensity varies geographically, it is vital to understand the components driving transmission within specific areas. In addition, shared social, behavioural, and occupational characteristics within communities may provoke the risk of malaria infection. This study aims to understand the relationship between human mobility, livelihood activities, and the risk of malaria infection in the border region of Jazan to facilitate further strategic malaria interventions. In addition, the study will complement and reinforce the existing efforts to eliminate malaria on the Saudi and Yemen border by providing a deeper understanding of human movement and livelihood activities. METHODS An unmatched case-control study was conducted. A total of 261 participants were recruited for the study, including 81 cases of confirmed malaria through rapid diagnostic tests (RDTs) and microscopy and 180 controls in the Baish Governorate in Jazan Provinces, Saudi Arabia. Individuals who received malaria tests were interviewed regarding their livelihood activities and recent movement (travel history). A questionnaire was administered, and the data was captured electronically. STATA software version 16 was used to analyse the data. Bivariate and multivariate analyses were conducted to determine if engaging in agricultural activities such as farming and animal husbandry, recent travel history outside of the home village within the last 30 days and participating in spiritual gatherings were related to malaria infection status. RESULTS A logistical regression model was used to investigate components associated with malaria infection. After adjusting several confounding factors, individuals who reported travelling away from their home village in the last 30 days OR 11.5 (95% CI 4.43-29.9), and those who attended a seasonal night spiritual gathering OR 3.04 (95% CI 1.10-8.42), involved in animal husbandry OR 2.52 (95% CI 1.10-5.82), and identified as male OR 4.57 (95% CI 1.43-14.7), were more likely to test positive for malaria infection. CONCLUSION Human movement and livelihood activities, especially at nighttime, should be considered malaria risk factors in malaria elimination settings, mainly when the targeted area is limited to a confined borderland area.
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Affiliation(s)
- Shaymaa A. Abdalal
- grid.412125.10000 0001 0619 1117Department of Medical Microbiology and Parasitology, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Joshua Yukich
- grid.265219.b0000 0001 2217 8588School of Public Health and Tropical Medicine, Tulane University, New Orleans, LA USA
| | - Katherine Andrinopoulos
- grid.265219.b0000 0001 2217 8588School of Public Health and Tropical Medicine, Tulane University, New Orleans, LA USA
| | - Maimonah Alghanmi
- grid.412125.10000 0001 0619 1117Vaccines and Immunotherapy Unit, King Fahd Medical Research Centre, King Abdulaziz University, Jeddah, Saudi Arabia ,grid.412125.10000 0001 0619 1117Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Majed H. Wakid
- grid.412125.10000 0001 0619 1117Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia ,grid.412125.10000 0001 0619 1117Special Infectious Agents Unit, King Fahd Medical Research Centre, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Ayat Zawawi
- grid.412125.10000 0001 0619 1117Vaccines and Immunotherapy Unit, King Fahd Medical Research Centre, King Abdulaziz University, Jeddah, Saudi Arabia ,grid.412125.10000 0001 0619 1117Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Steve Harakeh
- grid.412125.10000 0001 0619 1117King Fahd Medical Research Centre, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Sarah A. Altwaim
- grid.412125.10000 0001 0619 1117Department of Medical Microbiology and Parasitology, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia ,grid.412125.10000 0001 0619 1117Special Infectious Agents Unit, King Fahd Medical Research Centre, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Hattan Gattan
- grid.412125.10000 0001 0619 1117Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia ,grid.412125.10000 0001 0619 1117Special Infectious Agents Unit, King Fahd Medical Research Centre, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Fadi Baakdah
- grid.412125.10000 0001 0619 1117Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia ,grid.412125.10000 0001 0619 1117Special Infectious Agents Unit, King Fahd Medical Research Centre, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Mahmoud A. Gaddoury
- grid.412125.10000 0001 0619 1117Department of Community Medicine, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Hatoon A. Niyazi
- grid.412125.10000 0001 0619 1117Department of Medical Microbiology and Parasitology, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Jawahir A. Mokhtar
- grid.412125.10000 0001 0619 1117Department of Medical Microbiology and Parasitology, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Mohammed H. Alruhaili
- grid.412125.10000 0001 0619 1117Department of Medical Microbiology and Parasitology, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia ,grid.412125.10000 0001 0619 1117Special Infectious Agents Unit, King Fahd Medical Research Centre, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Isra Alsaady
- grid.412125.10000 0001 0619 1117Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia ,grid.412125.10000 0001 0619 1117Special Infectious Agents Unit, King Fahd Medical Research Centre, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Rowa Alhabbab
- grid.412125.10000 0001 0619 1117Vaccines and Immunotherapy Unit, King Fahd Medical Research Centre, King Abdulaziz University, Jeddah, Saudi Arabia ,grid.412125.10000 0001 0619 1117Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Mohamed Alfaleh
- grid.412125.10000 0001 0619 1117Vaccines and Immunotherapy Unit, King Fahd Medical Research Centre, King Abdulaziz University, Jeddah, Saudi Arabia ,grid.412125.10000 0001 0619 1117Department of Pharmaceutics, Faculty of Pharmacy, King Abdulaziz University, Jeddah, 21589 Saudi Arabia
| | - Anwar M. Hashem
- grid.412125.10000 0001 0619 1117Department of Medical Microbiology and Parasitology, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia ,grid.412125.10000 0001 0619 1117Vaccines and Immunotherapy Unit, King Fahd Medical Research Centre, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Ziab Zakey Alahmadey
- grid.415696.90000 0004 0573 9824Microbiology and Serology Departments, Al-Ansar Hospital, Ministry of Health, Medina, Saudi Arabia
| | - Joseph Keating
- grid.265219.b0000 0001 2217 8588School of Public Health and Tropical Medicine, Tulane University, New Orleans, LA USA
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Alamri SS, Alsaieedi A, Khouqeer Y, Afeef M, Alharbi S, Algaissi A, Alghanmi M, Altorki T, Zawawi A, Alfaleh MA, Hashem AM, Alhabbab R. The importance of combining serological testing with RT-PCR assays for efficient detection of COVID-19 and higher diagnostic accuracy. PeerJ 2023; 11:e15024. [PMID: 37065688 PMCID: PMC10103696 DOI: 10.7717/peerj.15024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 02/17/2023] [Indexed: 04/18/2023] Open
Abstract
Misdiagnosing suspected COVID-19 individuals could largely contribute to the viruses transmission, therefore, making an accurate diagnosis of infected subjects vital in minimizing and containing the disease. Although RT-PCR is the standard method in detecting COVID-19, it is associated with some limitations, including possible false negative results. Therefore, serological testing has been suggested as a complement assay to RT-PCR to support the diagnosis of acute infections. In this study, 15 out of 639 unvaccinated healthcare workers (HCWs) were tested negative for COVID-19 by RT-PCR and were found seropositive for SARS-CoV-2 nucleocapsid protein-specific IgM and IgG antibodies. These participants underwent additional confirmatory RT-PCR and SARS-CoV-2 spike-specific ELISA tests. Of the 15 individuals, nine participants were found negative by second RT-PCR but seropositive for anti-spike IgM and IgG antibodies and neutralizing antibodies confirming their acute infection. At the time of collection, these nine individuals were in close contact with COVID-19-confirmed patients, with 77.7% reporting COVID-19-related symptoms. These results indicate that including serological tests in the current testing profile can provide better outcomes and help contain the spread of the virus by increasing diagnostic accuracy to prevent future outbreaks rapidly.
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Affiliation(s)
- Sawsan S. Alamri
- Vaccines and Immunotherapy Unit, King Fahd Medical Research Centre, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Ahdab Alsaieedi
- Vaccines and Immunotherapy Unit, King Fahd Medical Research Centre, King Abdulaziz University, Jeddah, Saudi Arabia
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Yousef Khouqeer
- College of Medicine, King Saud bin Abdulaziz University for Health Sciences, Jeddah, Saudi Arabia
| | - Marwah Afeef
- Study & Research Department, King Fahad General Hospital, Jeddah, Saudi Arabia
| | - Samiyah Alharbi
- Intensive Care Unit, King Fahad General Hospital, Jeddah, Saudi Arabia
| | - Abdullah Algaissi
- Department of Medical Laboratories Technology, College of Applied Medical Sciences, Jazan University, Jazan, Saudi Arabia
- Medical Research Centre, Jazan University, Jazan, Saudi Arabia
| | - Maimonah Alghanmi
- Vaccines and Immunotherapy Unit, King Fahd Medical Research Centre, King Abdulaziz University, Jeddah, Saudi Arabia
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Tarfa Altorki
- Vaccines and Immunotherapy Unit, King Fahd Medical Research Centre, King Abdulaziz University, Jeddah, Saudi Arabia
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Ayat Zawawi
- Vaccines and Immunotherapy Unit, King Fahd Medical Research Centre, King Abdulaziz University, Jeddah, Saudi Arabia
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Mohamed A. Alfaleh
- Vaccines and Immunotherapy Unit, King Fahd Medical Research Centre, King Abdulaziz University, Jeddah, Saudi Arabia
- Department of Pharmaceutics, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Anwar M. Hashem
- Vaccines and Immunotherapy Unit, King Fahd Medical Research Centre, King Abdulaziz University, Jeddah, Saudi Arabia
- Department of Medical Microbiology and Parasitology, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Rowa Alhabbab
- Vaccines and Immunotherapy Unit, King Fahd Medical Research Centre, King Abdulaziz University, Jeddah, Saudi Arabia
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
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4
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Ghozy S, El-Qushayri AE, Varney J, Kacimi SEO, Bahbah EI, Morra ME, Shah J, Kallmes KM, Abbas AS, Elfil M, Alghamdi BS, Ashraf G, Alhabbab R, Dmytriw AA. The prognostic value of neutrophil-to-lymphocyte ratio in patients with traumatic brain injury: A systematic review. Front Neurol 2022; 13:1021877. [PMID: 36353130 PMCID: PMC9638118 DOI: 10.3389/fneur.2022.1021877] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 09/30/2022] [Indexed: 11/26/2022] Open
Abstract
Traumatic brain injury (TBI) places a heavy load on healthcare systems worldwide. Despite significant advancements in care, the TBI-related mortality is 30–50% and in most cases involves adolescents or young adults. Previous literature has suggested that neutrophil-to-lymphocyte ratio (NLR) may serve as a sensitive biomarker in predicting clinical outcomes following TBI. With conclusive evidence in this regard lacking, this study aimed to systematically review all original studies reporting the effectiveness of NLR as a predictor of TBI outcomes. A systematic search of eight databases was conducted according to the Preferred Reporting Items for Systematic Review and Meta-Analyses statement (PRISMA) recommendations. The risk of bias was assessed using the Quality in Prognostic Studies (QUIPS) tool. Eight studies were ultimately included in the study. In most of the studies interrogated, severity outcomes were successfully predicted by NLR in both univariate and multivariate prediction models, in different follow-up durations up to 6 months. A high NLR at 24 and 48 h after TBI in pediatric patients was associated with worse clinical outcomes. On pooling the NLR values within studies assessing its association with the outcome severity (favorable or not), patients with favorable outcomes had 37% lower NLR values than those with unfavorable ones (RoM= 0.63; 95% CI = 0.44–0.88; p = 0.007). However, there were considerable heterogeneity in effect estimates (I2 = 99%; p < 0.001). Moreover, NLR was a useful indicator of mortality at both 6-month and 1-year intervals. In conjunction with clinical and radiographic parameters, NLR might be a useful, inexpensive marker in predicting clinical outcomes in patients with TBI. However, the considerable heterogeneity in current literature keeps it under investigation with further studies are warranted to confirm the reliability of NLR in predicting TBI outcomes.
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Affiliation(s)
- Sherief Ghozy
- Department of Neuroradiology, Mayo Clinic, Rochester, MN, United States
- Nuffield Department of Primary Care Health Sciences and Department for Continuing Education (EBHC Program), Oxford University, Oxford, United Kingdom
- *Correspondence: Sherief Ghozy
| | | | - Joseph Varney
- School of Medicine, American University of the Caribbean, Philipsburg, Sint Maarten
| | | | | | | | - Jaffer Shah
- Drexel University College of Medicine, Drexel University, Philadelphia, PA, United States
| | - Kevin M. Kallmes
- Nested Knowledge, Saint Paul, MN, United States
- Superior Medical Experts, Saint Paul, MN, United States
| | | | - Mohamed Elfil
- Department of Neurological Sciences, University of Nebraska Medical Center, Omaha, NE, United States
| | - Badrah S. Alghamdi
- Neuroscience Unit, Department of Physiology, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
- Pre-Clinical Research Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Ghulam Ashraf
- Department of Medical Laboratory Sciences, College of Health Sciences, University of Sharjah, Sharjah, United Arab Emirates
- Ghulam Ashraf
| | - Rowa Alhabbab
- Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
- Vaccines and Immunotherapy Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Adam A. Dmytriw
- Neurointerventional Program, Departments of Medical Imaging and Clinical Neurological Sciences, London Health Sciences Centre, Western University, London, ON, Canada
- Neuroendovascular Program, Massachusetts General Hospital and Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States
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Alhabbab R, Blair P, Smyth LA, Ratnasothy K, Peng Q, Moreau A, Lechler R, Elgueta R, Lombardi G. Galectin-1 is required for the regulatory function of B cells. Sci Rep 2018; 8:2725. [PMID: 29426942 PMCID: PMC5807431 DOI: 10.1038/s41598-018-19965-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 01/04/2018] [Indexed: 12/11/2022] Open
Abstract
Galectin-1 (Gal-1) is required for the development of B cells in the bone marrow (BM), however very little is known about the contribution of Gal-1 to the development of B cell regulatory function. Here, we report an important role for Gal-1 in the induction of B cells regulatory function. Mice deficient of Gal-1 (Gal-1−/−) showed significant loss of Transitional-2 (T2) B cells, previously reported to include IL-10+ regulatory B cells. Gal-1−/− B cells stimulated in vitro via CD40 molecules have impaired IL-10 and Tim-1 expression, the latter reported to be required for IL-10 production in regulatory B cells, and increased TNF-α expression compared to wild type (WT) B cells. Unlike their WT counterparts, T2 and T1 Gal-1−/− B cells did not suppress TNF-α expression by CD4+ T cells activated in vitro with allogenic DCs (allo-DCs), nor were they suppressive in vivo, being unable to delay MHC-class I mismatched skin allograft rejection following adoptive transfer. Moreover, T cells stimulated with allo-DCs show an increase in their survival when co-cultured with Gal-1−/− T2 and MZ B cells compared to WT T2 and MZ B cells. Collectively, these data suggest that Gal-1 contributes to the induction of B cells regulatory function.
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Affiliation(s)
- R Alhabbab
- Infectious Disease Unit & Division of Applied Medical Sciences, King Fahad Centre for medical research, King Abdulaziz University, Jeddah, Saudi Arabia. .,Division of Transplantation Immunology & Mucosal Biology, King's College London, King's Health Partners, Guy's Hospital, London, SE1 9RT, UK.
| | - P Blair
- Division of Transplantation Immunology & Mucosal Biology, King's College London, King's Health Partners, Guy's Hospital, London, SE1 9RT, UK.,Centre for Rheumatology, Division of Medicine, University College London, London, WC1E 6JF, UK
| | - L A Smyth
- Division of Transplantation Immunology & Mucosal Biology, King's College London, King's Health Partners, Guy's Hospital, London, SE1 9RT, UK.,School of Health, Sports and Biosciences, University of East London, Stratford, E15 4LZ, UK
| | - K Ratnasothy
- Division of Transplantation Immunology & Mucosal Biology, King's College London, King's Health Partners, Guy's Hospital, London, SE1 9RT, UK
| | - Q Peng
- Division of Transplantation Immunology & Mucosal Biology, King's College London, King's Health Partners, Guy's Hospital, London, SE1 9RT, UK
| | - A Moreau
- Division of Transplantation Immunology & Mucosal Biology, King's College London, King's Health Partners, Guy's Hospital, London, SE1 9RT, UK.,Centre de Recherche en Transplantation et Immunologie UMR 1064, INSERM, Université de Nantes, CHU, Nantes, France
| | - R Lechler
- Division of Transplantation Immunology & Mucosal Biology, King's College London, King's Health Partners, Guy's Hospital, London, SE1 9RT, UK
| | - R Elgueta
- Division of Transplantation Immunology & Mucosal Biology, King's College London, King's Health Partners, Guy's Hospital, London, SE1 9RT, UK.
| | - G Lombardi
- Division of Transplantation Immunology & Mucosal Biology, King's College London, King's Health Partners, Guy's Hospital, London, SE1 9RT, UK.
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El-Kafrawy SA, Sohrab SS, Ela SA, Abd-Alla AMM, Alhabbab R, Farraj SA, Othman NA, Hassan AM, Bergoin M, Klitting R, Charrel RN, Hashem AM, Madani TA, Azhar EI. Multiple Introductions of Dengue 2 Virus Strains into Saudi Arabia from 1992 to 2014. Vector Borne Zoonotic Dis 2016; 16:391-9. [PMID: 27135750 DOI: 10.1089/vbz.2015.1911] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
INTRODUCTION Dengue is a significant arboviral infection that represents a major public health concern worldwide. The infection is endemic in most parts of South East Asia, sub-Saharan Africa, and Latin America. Among the four dengue virus (DENV) serotypes, DENV-2 has been reported to be the predominant serotype in Saudi Arabia since 1992. However, virological and epidemiological data of DENV-2 from Saudi Arabia are severely deficient and require further investigations. METHODS Full genome sequencing of a recent DENV-2 isolate and phylogenetic analysis of all available DENV-2 sequences from Saudi Arabia. RESULTS Based on full genome and envelope (E) gene sequence, we show that a recent isolate (DENV-2-Jeddah-2014) belongs to the Indian subcontinent lineage of the Cosmopolitan genotype with close similarity to recent strains from Pakistan. Interestingly, the E gene sequence of DENV-2-Jeddah-2014 isolate was slightly divergent from those previously identified in Saudi Arabia between 1992 and 2004 with three to nine amino acid (aa) substitutions. While our data show that the Cosmopolitan genotype is still circulating in Saudi Arabia, they highlight four distinct genetic groups suggesting at least four independent introductions into the Kingdom. CONCLUSIONS The close clustering of DENV-2 isolates reported from Saudi Arabia between 1992 and 2014 with strains from countries providing the highest numbers of pilgrims attending either Hajj or Umrah pilgrimages (Indonesia, Pakistan, India) clearly suggests a role for pilgrims or expatriates coming from DENV endemic countries in DENV-2 importation into Saudi Arabia. Accordingly, continuous monitoring of the circulation of DENVs in Saudi Arabia must be implemented to undertake effective control and management strategies in the Kingdom. Screening of the pilgrims coming to perform Hajj and Umrah might help prevent the introduction of new DENV strains, which is expected to increase the burden of the disease not only in Saudi Arabia but also in other countries.
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Affiliation(s)
- Sherif A El-Kafrawy
- 1 Special Infectious Agents Unit, King Fahd Medical Research Center, King Abdulaziz University , Jeddah, Saudi Arabia
| | - Sayed S Sohrab
- 1 Special Infectious Agents Unit, King Fahd Medical Research Center, King Abdulaziz University , Jeddah, Saudi Arabia
| | - Said Abol Ela
- 1 Special Infectious Agents Unit, King Fahd Medical Research Center, King Abdulaziz University , Jeddah, Saudi Arabia
| | - Adly M M Abd-Alla
- 2 Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture , Vienna, Austria .,3 Pests and Plant Protection Department, National Research Center , Cairo, Egypt
| | - Rowa Alhabbab
- 1 Special Infectious Agents Unit, King Fahd Medical Research Center, King Abdulaziz University , Jeddah, Saudi Arabia .,4 Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University , Jeddah, Saudi Arabia
| | - Suha A Farraj
- 1 Special Infectious Agents Unit, King Fahd Medical Research Center, King Abdulaziz University , Jeddah, Saudi Arabia
| | - Norah A Othman
- 1 Special Infectious Agents Unit, King Fahd Medical Research Center, King Abdulaziz University , Jeddah, Saudi Arabia
| | - Ahmed M Hassan
- 1 Special Infectious Agents Unit, King Fahd Medical Research Center, King Abdulaziz University , Jeddah, Saudi Arabia
| | - Max Bergoin
- 5 Laboratoire de Pathologie Comparée, Université Montpellier 2 , Montpellier, France
| | - Raphaelle Klitting
- 6 Aix Marseille Université, IRD French Institute of Research for Development , EHESP French School of Public Health, EPV UMR_D 190 "Emergence des Pathologies Virales", and IHU Méditerranée Infection, APHM Public Hospitals of Marseille, Marseille, France
| | - Remi N Charrel
- 1 Special Infectious Agents Unit, King Fahd Medical Research Center, King Abdulaziz University , Jeddah, Saudi Arabia .,6 Aix Marseille Université, IRD French Institute of Research for Development , EHESP French School of Public Health, EPV UMR_D 190 "Emergence des Pathologies Virales", and IHU Méditerranée Infection, APHM Public Hospitals of Marseille, Marseille, France
| | - Anwar M Hashem
- 1 Special Infectious Agents Unit, King Fahd Medical Research Center, King Abdulaziz University , Jeddah, Saudi Arabia .,7 Department of Medical Microbiology and Parasitology Faculty of Medicine, King Abdulaziz University , Jeddah, Saudi Arabia
| | - Tariq A Madani
- 8 Department of Medicine, Faculty of Medicine, King Abdulaziz University , Jeddah, Saudi Arabia
| | - Esam I Azhar
- 1 Special Infectious Agents Unit, King Fahd Medical Research Center, King Abdulaziz University , Jeddah, Saudi Arabia .,4 Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University , Jeddah, Saudi Arabia
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7
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Alhabbab R, Blair P, Elgueta R, Stolarczyk E, Marks E, Becker PD, Ratnasothy K, Smyth L, Safinia N, Sharif-Paghaleh E, O'Connell S, Noelle RJ, Lord GM, Howard JK, Spencer J, Lechler RI, Lombardi G. Diversity of gut microflora is required for the generation of B cell with regulatory properties in a skin graft model. Sci Rep 2015; 5:11554. [PMID: 26109230 PMCID: PMC4479822 DOI: 10.1038/srep11554] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 05/22/2015] [Indexed: 11/09/2022] Open
Abstract
B cells have been reported to promote graft rejection through alloantibody production. However, there is growing evidence that B cells can contribute to the maintenance of tolerance. Here, we used a mouse model of MHC-class I mismatched skin transplantation to investigate the contribution of B cells to graft survival. We demonstrate that adoptive transfer of B cells prolongs skin graft survival but only when the B cells were isolated from mice housed in low sterility "conventional" (CV) facilities and not from mice housed in pathogen free facilities (SPF). However, prolongation of skin graft survival was lost when B cells were isolated from IL-10 deficient mice housed in CV facilities. The suppressive function of B cells isolated from mice housed in CV facilities correlated with an anti-inflammatory environment and with the presence of a different gut microflora compared to mice maintained in SPF facilities. Treatment of mice in the CV facility with antibiotics abrogated the regulatory capacity of B cells. Finally, we identified transitional B cells isolated from CV facilities as possessing the regulatory function. These findings demonstrate that B cells, and in particular transitional B cells, can promote prolongation of graft survival, a function dependent on licensing by gut microflora.
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Affiliation(s)
- R Alhabbab
- Medical Research Council Centre for Transplantation, King's College London, King's Health Partners, Guy's Hospital, London SE1 9RT, UK
| | - P Blair
- Medical Research Council Centre for Transplantation, King's College London, King's Health Partners, Guy's Hospital, London SE1 9RT, UK
| | - R Elgueta
- Medical Research Council Centre for Transplantation, King's College London, King's Health Partners, Guy's Hospital, London SE1 9RT, UK
| | - E Stolarczyk
- Division of Diabetes and Nutritional Sciences, King's College London, Guy's Hospital, London SE1 9RT, UK
| | - E Marks
- Medical Research Council Centre for Transplantation, King's College London, King's Health Partners, Guy's Hospital, London SE1 9RT, UK
| | - P D Becker
- Medical Research Council Centre for Transplantation, King's College London, King's Health Partners, Guy's Hospital, London SE1 9RT, UK
| | - K Ratnasothy
- Medical Research Council Centre for Transplantation, King's College London, King's Health Partners, Guy's Hospital, London SE1 9RT, UK
| | - L Smyth
- Medical Research Council Centre for Transplantation, King's College London, King's Health Partners, Guy's Hospital, London SE1 9RT, UK
| | - N Safinia
- Medical Research Council Centre for Transplantation, King's College London, King's Health Partners, Guy's Hospital, London SE1 9RT, UK
| | - E Sharif-Paghaleh
- Medical Research Council Centre for Transplantation, King's College London, King's Health Partners, Guy's Hospital, London SE1 9RT, UK
| | - S O'Connell
- Medical Research Council Centre for Transplantation, King's College London, King's Health Partners, Guy's Hospital, London SE1 9RT, UK
| | - R J Noelle
- Medical Research Council Centre for Transplantation, King's College London, King's Health Partners, Guy's Hospital, London SE1 9RT, UK
| | - G M Lord
- Medical Research Council Centre for Transplantation, King's College London, King's Health Partners, Guy's Hospital, London SE1 9RT, UK
| | - J K Howard
- Division of Diabetes and Nutritional Sciences, King's College London, Guy's Hospital, London SE1 9RT, UK
| | - J Spencer
- Peter Gorer Department of Immunobiology, King's College London, Guy's Hospital, London SE1 9RT, UK
| | - R I Lechler
- Medical Research Council Centre for Transplantation, King's College London, King's Health Partners, Guy's Hospital, London SE1 9RT, UK
| | - G Lombardi
- Medical Research Council Centre for Transplantation, King's College London, King's Health Partners, Guy's Hospital, London SE1 9RT, UK
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8
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Moreau A, Blair PA, Chai JG, Ratnasothy K, Stolarczyk E, Alhabbab R, Rackham CL, Jones PM, Smyth L, Elgueta R, Howard JK, Lechler RI, Lombardi G. Transitional-2 B cells acquire regulatory function during tolerance induction and contribute to allograft survival. Eur J Immunol 2014; 45:843-53. [PMID: 25408265 DOI: 10.1002/eji.201445082] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Revised: 10/08/2014] [Accepted: 11/14/2014] [Indexed: 12/12/2022]
Abstract
In humans, tolerance to renal transplants has been associated with alterations in B-cell gene transcription and maintenance of the numbers of circulating transitional B cells. Here, we use a mouse model of transplantation tolerance to investigate the contribution of B cells to allograft survival. We demonstrate that transfer of B cells from mice rendered tolerant to MHC class I mismatched skin grafts can prolong graft survival in a dose-dependent and antigen-specific manner to a degree similar to that afforded by graft-specific regulatory T (Treg) cells. Tolerance in this model was associated with an increase in transitional-2 (T2) B cells. Only T2 B cells from tolerized mice, not naïve T2 nor alloantigen experienced T2, were capable of prolonging skin allograft survival, and suppressing T-cell activation. Tolerized T2 B cells expressed lower levels of CD86, increased TIM-1, and demonstrated a preferential survival in vivo. Furthermore, we demonstrate a synergistic effect between tolerized B cells and graft-specific Treg cells. IL-10 production by T2 B cells did not contribute to tolerance, as shown by transfer of B cells from IL-10(-/-) mice. These results suggest that T2 B cells in tolerant patients may include a population of regulatory B cells that directly inhibit graft rejection.
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Affiliation(s)
- Aurélie Moreau
- MRC Centre for Transplantation, King's College London Guy's Hospital, London, UK
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9
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Sharif-Paghaleh E, Sunassee K, Tavaré R, Ratnasothy K, Koers A, Ali N, Alhabbab R, Blower PJ, Lechler RI, Smyth LA, Mullen GE, Lombardi G. In vivo SPECT reporter gene imaging of regulatory T cells. PLoS One 2011; 6:e25857. [PMID: 22043296 PMCID: PMC3197183 DOI: 10.1371/journal.pone.0025857] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2011] [Accepted: 09/12/2011] [Indexed: 12/24/2022] Open
Abstract
Regulatory T cells (Tregs) were identified several years ago and are key in controlling autoimmune diseases and limiting immune responses to foreign antigens, including alloantigens. In vivo imaging techniques including intravital microscopy as well as whole body imaging using bioluminescence probes have contributed to the understanding of in vivo Treg function, their mechanisms of action and target cells. Imaging of the human sodium/iodide symporter via Single Photon Emission Computed Tomography (SPECT) has been used to image various cell types in vivo. It has several advantages over the aforementioned imaging techniques including high sensitivity, it allows non-invasive whole body studies of viable cell migration and localisation of cells over time and lastly it may offer the possibility to be translated to the clinic. This study addresses whether SPECT/CT imaging can be used to visualise the migratory pattern of Tregs in vivo. Treg lines derived from CD4+CD25+FoxP3+ cells were retrovirally transduced with a construct encoding for the human Sodium Iodide Symporter (NIS) and the fluorescent protein mCherry and stimulated with autologous DCs. NIS expressing self-specific Tregs were specifically radiolabelled in vitro with Technetium-99m pertechnetate (99mTcO4−) and exposure of these cells to radioactivity did not affect cell viability, phenotype or function. In addition adoptively transferred Treg-NIS cells were imaged in vivo in C57BL/6 (BL/6) mice by SPECT/CT using 99mTcO4−. After 24 hours NIS expressing Tregs were observed in the spleen and their localisation was further confirmed by organ biodistribution studies and flow cytometry analysis. The data presented here suggests that SPECT/CT imaging can be utilised in preclinical imaging studies of adoptively transferred Tregs without affecting Treg function and viability thereby allowing longitudinal studies within disease models.
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Affiliation(s)
- Ehsan Sharif-Paghaleh
- Medical Research Council (MRC) Centre for Transplantation, King's College London, King's Health Partners, Guy's Hospital, London, United Kingdom
- Division of Imaging Sciences, King's College London, St Thomas Hospital, London, United Kingdom
| | - Kavitha Sunassee
- Division of Imaging Sciences, King's College London, St Thomas Hospital, London, United Kingdom
| | - Richard Tavaré
- Division of Imaging Sciences, King's College London, St Thomas Hospital, London, United Kingdom
| | - Kulachelvy Ratnasothy
- Medical Research Council (MRC) Centre for Transplantation, King's College London, King's Health Partners, Guy's Hospital, London, United Kingdom
| | - Alexander Koers
- Division of Imaging Sciences, King's College London, St Thomas Hospital, London, United Kingdom
| | - Niwa Ali
- Medical Research Council (MRC) Centre for Transplantation, King's College London, King's Health Partners, Guy's Hospital, London, United Kingdom
| | - Rowa Alhabbab
- Medical Research Council (MRC) Centre for Transplantation, King's College London, King's Health Partners, Guy's Hospital, London, United Kingdom
| | - Philip J. Blower
- Division of Imaging Sciences, King's College London, St Thomas Hospital, London, United Kingdom
| | - Robert I. Lechler
- Medical Research Council (MRC) Centre for Transplantation, King's College London, King's Health Partners, Guy's Hospital, London, United Kingdom
| | - Lesley A. Smyth
- Medical Research Council (MRC) Centre for Transplantation, King's College London, King's Health Partners, Guy's Hospital, London, United Kingdom
| | - Gregory E. Mullen
- Medical Research Council (MRC) Centre for Transplantation, King's College London, King's Health Partners, Guy's Hospital, London, United Kingdom
- Division of Imaging Sciences, King's College London, St Thomas Hospital, London, United Kingdom
- * E-mail: (GL); (GEM)
| | - Giovanna Lombardi
- Medical Research Council (MRC) Centre for Transplantation, King's College London, King's Health Partners, Guy's Hospital, London, United Kingdom
- * E-mail: (GL); (GEM)
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