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Mendoza M, Gunasekera D, Pratt KP, Qiu Q, Casares S, Brumeanu TD. The humanized DRAGA mouse (HLA-A2. HLA-DR4. RAG1 KO. IL-2R g c KO. NOD) establishes inducible and transmissible models for influenza type A infections. Hum Vaccin Immunother 2020; 16:2222-2237. [PMID: 32129705 DOI: 10.1080/21645515.2020.1713605] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
We have engineered a Human Immune System (HIS)-reconstituted mouse strain (DRAGA mouse: HLA-A2. HLA-DR4. Rag1 KO. IL-2Rγc KO. NOD) in which the murine immune system has been replaced by a long-term, functional HIS via infusion of CD34+ hematopoietic stem cells (HSC) from cord blood. Herein, we report that the DRAGA mice can sustain inducible and transmissible H1N1 and H3N2 influenza A viral (IAV) infections. DRAGA female mice were significantly more resilient than the males to the H3N2/Aichi infection, but not to H3N2/Hong Kong, H3N2/Victoria, or H1N1/PR8 sub-lethal infections. Consistently associated with large pulmonary hemorrhagic areas, both human and murine Factor 8 mRNA transcripts were undetectable in the damaged lung tissues but not in livers of DRAGA mice advancing to severe H1N1/PR8 infection. Infected DRAGA mice mounted a neutralizing anti-viral antibody response and developed lung-resident CD103 T cells. These results indicate that the DRAGA mouse model for IAV infections can more closely approximate the human lung pathology and anti-viral immune responses compared to non-HIS mice. This mouse model may also allow further investigations into gender-based resilience to IAV infections, and may potentially be used to evaluate the efficacy of IAV vaccine regimens for humans.
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Affiliation(s)
- Mirian Mendoza
- Department of Medicine, Division of Immunology, Uniformed Services University of the Health Sciences , Bethesda, MD, USA.,Department of Pathology, Uniformed Services University of the Health Sciences , Bethesda, MD, USA
| | - Devi Gunasekera
- Department of Medicine, Division of Immunology, Uniformed Services University of the Health Sciences , Bethesda, MD, USA
| | - Kathleen P Pratt
- Department of Medicine, Division of Immunology, Uniformed Services University of the Health Sciences , Bethesda, MD, USA
| | - Qi Qiu
- Department of Medicine, Division of Immunology, Uniformed Services University of the Health Sciences , Bethesda, MD, USA.,US Military Malaria Vaccine Development, Naval Medical Research Center/Walter Reed Army Institute of Research , Silver Spring, MD, USA
| | - Sofia Casares
- Department of Medicine, Division of Immunology, Uniformed Services University of the Health Sciences , Bethesda, MD, USA.,US Military Malaria Vaccine Development, Naval Medical Research Center/Walter Reed Army Institute of Research , Silver Spring, MD, USA
| | - Teodor-D Brumeanu
- Department of Medicine, Division of Immunology, Uniformed Services University of the Health Sciences , Bethesda, MD, USA
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Misra RS, Nayak JL. The Importance of Vaccinating Children and Pregnant Women against Influenza Virus Infection. Pathogens 2019; 8:pathogens8040265. [PMID: 31779153 PMCID: PMC6963306 DOI: 10.3390/pathogens8040265] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 11/20/2019] [Accepted: 11/22/2019] [Indexed: 12/21/2022] Open
Abstract
Influenza virus infection is responsible for significant morbidity and mortality in the pediatric and pregnant women populations, with deaths frequently caused by severe influenza-associated lower respiratory tract infection and acute respiratory distress syndrome (ARDS). An appropriate immune response requires controlling the viral infection through activation of antiviral defenses, which involves cells of the lung and immune system. High levels of viral infection or high levels of inflammation in the lower airways can contribute to ARDS. Pregnant women and young children, especially those born prematurely, may develop serious complications if infected with influenza virus. Vaccination against influenza will lead to lower infection rates and fewer complications, even if the vaccine is poorly matched to circulating viral strains, with maternal vaccination offering infants protection via antibody transmission through the placenta and breast milk. Despite the health benefits of the influenza vaccine, vaccination rates around the world remain well below targets. Trust in the use of vaccines among the public must be restored in order to increase vaccination rates and decrease the public health burden of influenza.
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Affiliation(s)
- Ravi S Misra
- Department of Pediatrics Division of Neonatology, The University of Rochester Medical Center, Rochester, NY 14623, USA
- Correspondence:
| | - Jennifer L Nayak
- Department of Pediatrics Division of Pediatric Infectious Diseases, The University of Rochester Medical Center, Rochester, NY 14623, USA;
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Nanjappa S, Jeong DK, Muddaraju M, Jeong K, Hill ED, Greene JN. Diffuse Alveolar Hemorrhage in Acute Myeloid Leukemia. Cancer Control 2017; 23:272-7. [PMID: 27556667 DOI: 10.1177/107327481602300310] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Diffuse alveolar hemorrhage is a potentially fatal pulmonary disease syndrome that affects individuals with hematological and nonhematological malignancies. The range of inciting factors is wide for this syndrome and includes thrombocytopenia, underlying infection, coagulopathy, and the frequent use of anticoagulants, given the high incidence of venous thrombosis in this population. Dyspnea, fever, and cough are commonly presenting symptoms. However, clinical manifestations can be variable. Obvious bleeding (hemoptysis) is not always present and can pose a potential diagnostic challenge. Without prompt treatment, hypoxia that rapidly progresses to respiratory failure can occur. Diagnosis is primarily based on radiological and bronchoscopic findings. This syndrome is especially common in patients with hematological malignancies, given an even greater propensity for thrombocytopenia as a result of bone marrow suppression as well as the often prolonged immunosuppression in this patient population. The syndrome also has an increased incidence in individuals with hematological malignancies who have received a bone marrow transplant. We present a case series of 5 patients with acute myeloid leukemia presenting with diffuse alveolar hemorrhage at our institution. A comparison of clinical manifestations, radiographic findings, treatment course, and outcomes are described. A review of the literature and general overview of the diagnostic evaluation, differential diagnoses, pathophysiology, and treatment of this syndrome are discussed.
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Affiliation(s)
- Sowmya Nanjappa
- Departments of Internal Medicine and Infectious Diseases and Tropical Medicine, Moffitt Cancer Center, Tampa, FL 33612, USA. and
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Wang SF, Tseng SP, Loh EW, Wang WH, Li MC, Chen KH, Tsai WC, Lee YM, Chen HY, Liu FT, Arthur Chen YM, Huang JC. Generation and characterization of new monoclonal antibodies against swine origin 2009 influenza A (H1N1) virus and evaluation of their prophylactic and therapeutic efficacy in a mouse model. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2017; 67:8-17. [PMID: 27984103 DOI: 10.1016/j.dci.2016.10.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2016] [Revised: 10/25/2016] [Accepted: 10/25/2016] [Indexed: 06/06/2023]
Abstract
In 2009, a swine-origin influenza A virus - A(H1N1)pdm09 - emerged and has became a pandemic strain circulating worldwide. The hemagglutinin (HA) of influenza virus is a potential target for the development of anti-viral therapeutic agents. Here, we generated mAbs by immunization of baculovirus-insect expressing trimeric recombinant HA of the A(H1N1)pdm09 strain. Results indicated that the mAbs recognized two novel neutralizing and protective epitopes-"STAS" and "FRSK" which located near Cb and Ca1 antigenic regions respectively and were conserved in almost 2009-2016 influenza H1N1 stains. The mAb 12E11 demonstrated higher protective efficacy than mAb 8B10 in mice challenge assay. Both mAb pretreatments significantly reduced virus titers and pro-inflammatory cytokines in mice lung postinfection (p < 0.01), and showed prophylactic and therapeutic efficacies even 48 h postinfection (p < 0.05). Combination therapy using the mAbs with oseltamivir pre- and post-treatment showed synergistic therapeutic effect in mice model (p < 0.01). Further investigation for clinical application in humans is warranted.
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Affiliation(s)
- Sheng-Fan Wang
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; Center for Infectious Disease and Cancer Research, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
| | - Sung-Pin Tseng
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - El-Wui Loh
- Center for Evidence-based Health Care, Taipei Medical University, Shuang Ho Hospital, New Taipei City 23561, Taiwan
| | - Wen-Hung Wang
- Department of Medicine, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Ming-Chun Li
- Department of Pediatrics, Taipei City Hospital, Yang-Ming Branch, Taipei 11146, Taiwan
| | - Kuan-Hsuan Chen
- Center for Infectious Disease and Cancer Research, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Wan-Chi Tsai
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Yuan-Ming Lee
- Department of Laboratory Medicine, National Yang-Ming University Hospital, Yi-Lan 260, Taiwan
| | - Huan-Yuan Chen
- Institute of Biomedical Sciences, Academia Sinica, Taipei 11578, Taiwan; Department of Dermatology, University of California at Davis, CA 95816, USA
| | - Fu-Tong Liu
- Institute of Biomedical Sciences, Academia Sinica, Taipei 11578, Taiwan; Department of Dermatology, University of California at Davis, CA 95816, USA
| | - Yi-Ming Arthur Chen
- Center for Infectious Disease and Cancer Research, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; Department of Microbiology, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
| | - Jason C Huang
- Department of Biotechnology and Laboratory Science in Medicine, National Yang-Ming University, Taipei 11272, Taiwan; AIDS Prevention and Research Center, National Yang-Ming University, Taipei 11272, Taiwan.
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Yousuf T, Lawrence L, Bacal A, Krikorian A. A Novel Association Between Pituitary Tumor Apoplexy and Influenza A. AACE Clin Case Rep 2016. [DOI: 10.4158/ep15657.cr] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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