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Urakawa M, Baakhtari M, Ramah A, Imatake S, Ahmadi P, Deguchi Y, Uematsu M, Nakama Y, Imabeppu K, Nomura Y, Yasuda M. Comparative Analysis of Maternal Colostrum and Colostrum Replacer Effects on Immunity, Growth, and Health of Japanese Black Calves. Animals (Basel) 2024; 14:346. [PMID: 38275805 PMCID: PMC10812718 DOI: 10.3390/ani14020346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 12/26/2023] [Accepted: 01/18/2024] [Indexed: 01/27/2024] Open
Abstract
Maternal colostrum (MC) is an important source of nutrients and immune factors for newborn calves. However, when colostrum is unavailable or of poor quality, a colostrum replacer (CR) may be a suitable alternative to MC. As stock-raising farmers must make informed decisions about colostrum feeding management, this study was conducted to determine the effect of feeding MC versus CR on the promotion of immunological status, growth, and health in pre-weaned Japanese black (JB) calves. Sixteen newborn JB calves were fed MC after birth, and 16 JB calves were fed CR. For the MC group, the numbers of γδ T cells, CD4+ cells, CD8+ cells, CD4+CD8+ cells, B cells, and MHC class II+ cells were significantly higher compared with the CR group. Furthermore, the expression levels of interleukin (IL)-1β-, IL-2-, and interferon-γ (IFN-γ)-encoding mRNAs were significantly higher in the MC group compared with the CR group. A lower incidence of disease in 1-month-old calves and higher carcass weight in the MC group were observed compared with the CR group. These results suggest that CR activates the immune system delayed in calves compared with MC. MC increases populations of various immunocompetent cells, which can reduce infection rates and improve body weight gain.
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Affiliation(s)
- Marimu Urakawa
- Laboratory of Veterinary Anatomy, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan (M.B.)
| | - Mahmoud Baakhtari
- Laboratory of Veterinary Anatomy, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan (M.B.)
- Faculty of Veterinary Science, Balkh University, Mazar-i-Sharif 1703, Afghanistan
| | - Amany Ramah
- Laboratory of Veterinary Anatomy, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan (M.B.)
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Benha 13518, Egypt
| | - Shoichiro Imatake
- Laboratory of Veterinary Anatomy, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan (M.B.)
| | - Parnian Ahmadi
- Faculty of Veterinary Science, Balkh University, Mazar-i-Sharif 1703, Afghanistan
- Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, Miyazaki 889-2192, Japan
| | - Yuichiro Deguchi
- Miyazaki Agricultural Mutual Aid Association, Miyazaki 880-0877, Japan
| | - Mizuho Uematsu
- Miyazaki Agricultural Mutual Aid Association, Miyazaki 880-0877, Japan
| | - Yoshiki Nakama
- Miyazaki Agricultural Mutual Aid Association, Miyazaki 880-0877, Japan
| | - Kazunari Imabeppu
- Miyazaki Agricultural Mutual Aid Association, Miyazaki 880-0877, Japan
| | - Yusuke Nomura
- Miyazaki Agricultural Mutual Aid Association, Miyazaki 880-0877, Japan
| | - Masahiro Yasuda
- Laboratory of Veterinary Anatomy, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan (M.B.)
- Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, Miyazaki 889-2192, Japan
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Ezdakova IY, Kapustina OV, Gulyukin MI, Stepanova TV. [Characterization of B1-cells during experimental leukomogenesis.]. Vopr Virusol 2021; 65:35-40. [PMID: 32496719 DOI: 10.36233/0507-4088-2020-65-1-35-40] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Accepted: 01/29/2020] [Indexed: 11/05/2022]
Abstract
BACKGROUND Bovine leukemia causes a significant polyclonal expansion of CD5+, IgM+ B lymphocytes, known as persistent lymphocytosis (PL), in approximately 30% of infected cattle. However, it is not yet clear what happens to this subpopulation of B cells in the early period of infection of animals. PURPOSE Quantitative characterization of IgM+ and CD5+ B cells during the immune response, which can provide important information on the mechanisms of lymphocyte priming in BLV infection. MATERIAL AND METHODS The experiment used BLV-negative calves of black-motley breed at the age of 8 months (n = 11). Animals (n = 8) were intravenously injected with blood of a BLV-positive cow. Control calves (n = 3) were injected with saline. Studies were performed before and after infection on days 5, 7, 14, 21, 28 and 65 of the immune response. The determination of the number of B-lymphocytes in the blood was carried out by the method of immunoperoxidase staining based on monoclonal antibodies to IgM, CD5. RESULTS As a result of the studies, it was found that the level of CD5+ B cells increases on the 14th day of the primary immune response, characterized by polyclonal proliferation of CD5+ B cells, which are the primary target for BLV. Our research data confirm that in the lymphocytes of experimentally infected cattle, surface aggregation of IgM and CD5 molecules on B-lymphocytes is absent. DISCUSSION It is known that the wave-like nature of IgM synthesis, which was shown in previous studies, depends on a subpopulation of B1 cells. After 7 days of the immune response, IgM+ and CD5+ cells do not correlate, which shows their functional difference. The increase in CD5+ cells is probably not associated with B cells, but with T cells differentiating under the influence of the virus. CONCLUSIONS A subset of B1 cells is the primary target of cattle leukemia virus. The 65th day of the immune response is characterized by the expansion of IgM+ B cells, a decrease in the number of CD5+ cells and a uniform distribution of receptors around the perimeter of the cells.
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Affiliation(s)
- I Y Ezdakova
- All-Russian Scientific and Research Institute of Experimental Veterinary Medicine named after K.I. Scriabin and Ya.R. Kovalenko of the Russian Academy of Sciences, Moscow, 109428, Russia
| | - O V Kapustina
- All-Russian Scientific and Research Institute of Experimental Veterinary Medicine named after K.I. Scriabin and Ya.R. Kovalenko of the Russian Academy of Sciences, Moscow, 109428, Russia
| | - M I Gulyukin
- All-Russian Scientific and Research Institute of Experimental Veterinary Medicine named after K.I. Scriabin and Ya.R. Kovalenko of the Russian Academy of Sciences, Moscow, 109428, Russia
| | - T V Stepanova
- All-Russian Scientific and Research Institute of Experimental Veterinary Medicine named after K.I. Scriabin and Ya.R. Kovalenko of the Russian Academy of Sciences, Moscow, 109428, Russia
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Murakami H, Uchiyama J, Suzuki C, Nikaido S, Shibuya K, Sato R, Maeda Y, Tomioka M, Takeshima SN, Kato H, Sakaguchi M, Sentsui H, Aida Y, Tsukamoto K. Variations in the viral genome and biological properties of bovine leukemia virus wild-type strains. Virus Res 2018; 253:103-111. [PMID: 29913249 DOI: 10.1016/j.virusres.2018.06.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Revised: 06/14/2018] [Accepted: 06/14/2018] [Indexed: 01/23/2023]
Abstract
Bovine leukemia virus (BLV) is the etiological agent of enzootic bovine leukosis (EBL), which causes enormous economic losses in the livestock industry worldwide. To reduce the economic loss caused by BLV infection, it is important to clarify the characters associated with BLV transmissibility and pathogenesis in cattle. In this study, we focused on viral characters and examined spontaneous mutations in the virus and viral properties by analyses of whole genome sequences and BLV molecular clones derived from cows with and without EBL. Genomic analysis indicated that all 28 strains harbored limited genetic variations but no deletion mutations that allowed classification into three groups (A, B, and C), except for one strain. Some nucleotide/amino acid substitutions were specific to a particular group. On the other hand, these genetic variations were not associated with the host bovine leukocyte antigen-DRB3 allele, which is known to be related to BLV pathogenesis. The viral replication activity in vitro was high, moderate, and low in groups A, B, and C, respectively. In addition, the proviral load, which is related to BLV transmissibility and pathogenesis, was high in cows infected with group A strains and low in those infected with group B/C strains. Therefore, these results suggest that limited genetic variations could affect viral properties relating to BLV transmissibility and pathogenesis.
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Affiliation(s)
- Hironobu Murakami
- Laboratory of Animal Health II, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan.
| | - Jumpei Uchiyama
- Laboratory of Veterinary Microbiology I, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Chihiro Suzuki
- Laboratory of Animal Health II, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Sae Nikaido
- Laboratory of Animal Health II, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Kaho Shibuya
- Laboratory of Animal Health II, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Reiichiro Sato
- Laboratory of Farm Animal Internal Medicine, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Yosuke Maeda
- Laboratory of Clinical Veterinary Medicine for Large Animal, School of Veterinary Medicine, Kitasato University, Higashi 23bancho 35-1, Towada, Aomori, 034-8628, Japan
| | - Michiko Tomioka
- Laboratory of Clinical Veterinary Medicine for Large Animal, School of Veterinary Medicine, Kitasato University, Higashi 23bancho 35-1, Towada, Aomori, 034-8628, Japan
| | - Shin-Nosuke Takeshima
- Nano Medical Engineering Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; Department of Food and Nutrition Faculty of Human Life, Jumonji University, 2-1-28, Sugasawa, Niiza, Saitama, 352-8510, Japan
| | - Hajime Kato
- Southern Nemuro Operation Center, Hokkaido Higashi Agricultural Mutual Aid Association, 119, Betsukai-Midorimachi, Betsukai, Notsuke-gun, Hokkaido 086-0292, Japan
| | - Masahiro Sakaguchi
- Laboratory of Veterinary Microbiology I, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
| | - Hiroshi Sentsui
- Laboratory of Veterinary Epizootiology, School of Veterinary Medicine, Nihon University, Kameino 1866, Fujisawa, Kanagawa 252-0880, Japan
| | - Yoko Aida
- Nano Medical Engineering Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Kenji Tsukamoto
- Laboratory of Animal Health II, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
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Inefficient viral replication of bovine leukemia virus induced by spontaneous deletion mutation in the G4 gene. J Gen Virol 2016; 97:2753-2762. [DOI: 10.1099/jgv.0.000583] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Farias MVN, Lendez PA, Marin M, Quintana S, Martínez-Cuesta L, Ceriani MC, Dolcini GL. Toll-like receptors, IFN-γ and IL-12 expression in bovine leukemia virus-infected animals with low or high proviral load. Res Vet Sci 2016; 107:190-195. [DOI: 10.1016/j.rvsc.2016.06.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Revised: 06/09/2016] [Accepted: 06/18/2016] [Indexed: 10/21/2022]
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McGill JL, Nonnecke BJ, Lippolis JD, Reinhardt TA, Sacco RE. Differential chemokine and cytokine production by neonatal bovine γδ T-cell subsets in response to viral toll-like receptor agonists and in vivo respiratory syncytial virus infection. Immunology 2013; 139:227-44. [PMID: 23368631 DOI: 10.1111/imm.12075] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2012] [Revised: 01/14/2013] [Accepted: 01/16/2013] [Indexed: 12/21/2022] Open
Abstract
γδ T cells respond to stimulation via toll-like receptors (TLR). Bovine γδ T cells express TLR3 and TLR7, receptors that are key for the recognition of viruses such as bovine respiratory syncytial virus (BRSV); however, responses of γδ T cells to stimulation via these receptors, and their role during viral infections, remains unclear. Here, we demonstrate that neonatal bovine γδ T cells exhibit robust chemokine and cytokine production in response to the TLR3 agonist, Poly(I:C), and the TLR7 agonist, Imiquimod. Importantly, we observe a similar phenotype in γδ T-cell subsets purified from calves infected with BRSV. Bovine γδ T cells are divided into subsets based upon their expression of WC1, and the response to TLR stimulation and viral infection differs between these subsets, with WC1.1(+) and WC1(neg) γδ T cells producing macrophage inflammatory protein-1α and granulocyte-macrophage colony-stimulating factor, and WC1.2(+) γδ T cells preferentially producing the regulatory cytokines interleukin-10 and transforming growth factor-β. We further report that the active vitamin D metabolite 1,25-dihydroxyvitamin D3 does not alter γδ T-cell responses to TLR agonists or BRSV. To our knowledge, this is the first characterization of the γδ T-cell response during in vivo BRSV infection and the first suggestion that WC1.1(+) and WC1(neg) γδ T cells contribute to the recruitment of inflammatory populations during viral infection. Based on our results, we propose that circulating γδ T cells are poised to rapidly respond to viral infection and suggest an important role for γδ T cells in the innate immune response of the bovine neonate.
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Affiliation(s)
- Jodi L McGill
- Ruminant Diseases and Immunology Research Unit, National Animal Disease Center, Agricultural Research Service, Ames, IA 50010, USA.
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Cell mediated innate responses of cattle and swine are diverse during foot-and-mouth disease virus (FMDV) infection: a unique landscape of innate immunity. Immunol Lett 2013; 152:135-43. [PMID: 23727070 PMCID: PMC7112845 DOI: 10.1016/j.imlet.2013.05.007] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2013] [Revised: 05/06/2013] [Accepted: 05/13/2013] [Indexed: 12/21/2022]
Abstract
Harnessing the innate immunity can protect domestic animals from viruses. Innate immune cells have potential capacity to afford protection against infection. Understanding the innate and adaptive immunity will aid rational vaccine design.
Pathogens in general and pathogenic viruses in particular have evolved a myriad of mechanisms to escape the immune response of mammalian species. Viruses that cause acute disease tend to bear characteristics that make them very contagious, as survival does not derive from chronicity of infection, but spread of disease throughout the herd. Foot-and-mouth disease virus (FMDV) is one of the most contagious viruses known. Upon infection of susceptible species, cloven-hoofed animals, the virus proliferates rapidly and causes a vesicular disease within 2–4 days. Disease symptoms resolve by 10 days to 2 weeks and in most cases, virus can no longer be detected. Periods of fever and viremia are usually brief, 1–3 days. In vivo control of virus infection and clearance of the virus during and following acute infection is of particular interest. The interaction of this virus with cells mediating the early, innate immune response has been analyzed in a number of recent studies. In most reports, the virus has a distinct inhibitory effect on the response of cells early in infection. Here we review these new data and discuss the dynamics of the interaction of virus with different cell types mediating the immune response to infection.
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Zhu H, Wang WX, Wang BQ, Zhu XF, Wu XJ, Ma QY, Chen DK. MOLECULAR CLONING, SEQUENCING, EXPRESSION AND BIOLOGICAL ACTIVITY OF GIANT PANDA (AILUROPODA MELANOLEUCA) INTERFERON-GAMMA. J Immunoassay Immunochem 2012:150527102118001. [PMID: 24965219 DOI: 10.1080/15321819.2012.686469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The giant panda (Ailuropoda melanoleuca) is an endangered species and indigenous to China. Interferon-gamma (IFN-γ) is the only member of type □ IFN and is vital for the regulation of host adapted immunity and inflammatory response. Little is known aboutthe FN-γ gene and its roles in giant panda.In this study, IFN-γ gene of Qinling giant panda was amplified from total blood RNA by RT-CPR, cloned, sequenced and analysed. The open reading frame (ORF) of Qinling giant panda IFN-γ encodes 152 amino acidsand is highly similar to Sichuan giant panda with an identity of 99.3% in cDNA sequence. The IFN-γ cDNA sequence was ligated to the pET32a vector and transformed into E. coli BL21 competent cells. Expression of recombinant IFN-γ protein of Qinling giant panda in E. coli was confirmed by SDS-PAGE and Western blot analysis. Biological activity assay indicated that the recombinant IFN-γ protein at the concentration of 4-10 µg/ml activated the giant panda peripheral blood lymphocytes,while at 12 µg/mlinhibited. the activation of the lymphocytes.These findings provide insights into the evolution of giant panda IFN-γ and information regarding amino acid residues essential for their biological activity.
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Affiliation(s)
- Hui Zhu
- a College of Veterinary Medicine, Northwest Agriculture and Forestry University , Yangling , Shaanxi Province , P. R. China
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Azedo M, Blagitz M, Souza F, Benesi F, Della Libera A. Avaliação funcional de monócitos de bovinos naturalmente infectados pelo vírus da leucose bovina. ARQ BRAS MED VET ZOO 2011. [DOI: 10.1590/s0102-09352011000500013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Para a avaliação funcional de monócitos de bovinos infectados pelo vírus da leucose enzoótica bovina (LEB), foram coletadas amostras de sangue de 10 vacas com sorodiagnóstico negativo (SN), 10 com sorodiagnóstico positivo e que manifestavam linfocitose persistente (LP), e 10 com sorodiagnóstico positivo alinfocitóticas (AL). Os monócitos foram separados por gradiente de densidade e aderência em placa, submetidos aos testes de viabilidade por exclusão do azul de tripan, fagocitose de partículas de Zymosan, espraiamento em lamínula de vidro e quantificação da liberação de peróxido de hidrogênio (H2O2) e de óxido nítrico (ON). Monócitos de animais com LP apresentaram os menores índices de viabilidade (P<0,001), de fagocitose (P<0,001) e de espraiamento (P=0,006). Também apresentaram maior produção de H2O2 sem prévio estímulo (P=0,001) e após estímulo in vitro com 12-miristato 13-acetato de forbol (P=0,006) do que monócitos de animais SN e AL. O aumento da produção de H2O2 proporcionado pelo estímulo foi menor (P=0,015) nos monócitos de fêmeas que manifestaram LP. Não houve diferença na produção de ON pelos monócitos segundo os grupos. Os resultados indicam que o vírus da LEB, apesar de infectar linfócitos B, altera funcionalmente os monócitos circulantes em bovinos que manifestam LP.
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Xu Q, Nomura T, Ikeda M, Ohta M, Kameyama KI, Konishi M, Wu D, Inumaru S, Murakami K. Stability of recombinant bovine interferon-γ antiviral activity in the absence of stabilizing additives. Microbiol Immunol 2011; 55:595-8. [PMID: 21545512 DOI: 10.1111/j.1348-0421.2011.00349.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The stability of recombinant bovine interferon-γ (rbIFN-γ) produced by a baculovirus expression system was investigated under different storage conditions: freezing-thawing and storage for 30 days at temperatures of -80, 4, 25, and 37°C. Antiviral activity was not significantly decreased by freeze-thawing at least five times. Furthermore, although not statistically different, antiviral activity gradually decreased as temperature increased. These findings suggest that rbIFN-γ possesses high thermal and freeze-thaw stability.
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Affiliation(s)
- Qingyuan Xu
- Harbin Veterinary Research Institute, 427 Maduan Street, Harbin 150001, China
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Binjawadag B, Hari Babu Y, Sreekumar E. Immunomodulatory Effect of Recombinant Chicken Interferon-gamma (rchIFN-γ) on Specific and Non-specific Immune Responses in Chicken Vaccinated Against Newcastle Disease Virus (NDV). ACTA ACUST UNITED AC 2009. [DOI: 10.3923/ijps.2009.122.127] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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12
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Chen J, Liu X. The role of interferon γ in regulation of CD4+ T-cells and its clinical implications. Cell Immunol 2009; 254:85-90. [DOI: 10.1016/j.cellimm.2008.09.001] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2008] [Revised: 08/29/2008] [Accepted: 09/01/2008] [Indexed: 11/30/2022]
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13
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Gillet N, Florins A, Boxus M, Burteau C, Nigro A, Vandermeers F, Balon H, Bouzar AB, Defoiche J, Burny A, Reichert M, Kettmann R, Willems L. Mechanisms of leukemogenesis induced by bovine leukemia virus: prospects for novel anti-retroviral therapies in human. Retrovirology 2007; 4:18. [PMID: 17362524 PMCID: PMC1839114 DOI: 10.1186/1742-4690-4-18] [Citation(s) in RCA: 237] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2007] [Accepted: 03/16/2007] [Indexed: 12/15/2022] Open
Abstract
In 1871, the observation of yellowish nodules in the enlarged spleen of a cow was considered to be the first reported case of bovine leukemia. The etiological agent of this lymphoproliferative disease, bovine leukemia virus (BLV), belongs to the deltaretrovirus genus which also includes the related human T-lymphotropic virus type 1 (HTLV-1). This review summarizes current knowledge of this viral system, which is important as a model for leukemogenesis. Recently, the BLV model has also cast light onto novel prospects for therapies of HTLV induced diseases, for which no satisfactory treatment exists so far.
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Affiliation(s)
- Nicolas Gillet
- Molecular and Cellular Biology, Faculté Universitaire des Sciences Agronomiques, Gembloux, Belgium
| | - Arnaud Florins
- Molecular and Cellular Biology, Faculté Universitaire des Sciences Agronomiques, Gembloux, Belgium
| | - Mathieu Boxus
- Molecular and Cellular Biology, Faculté Universitaire des Sciences Agronomiques, Gembloux, Belgium
| | - Catherine Burteau
- Molecular and Cellular Biology, Faculté Universitaire des Sciences Agronomiques, Gembloux, Belgium
| | - Annamaria Nigro
- Molecular and Cellular Biology, Faculté Universitaire des Sciences Agronomiques, Gembloux, Belgium
| | - Fabian Vandermeers
- Molecular and Cellular Biology, Faculté Universitaire des Sciences Agronomiques, Gembloux, Belgium
| | - Hervé Balon
- Molecular and Cellular Biology, Faculté Universitaire des Sciences Agronomiques, Gembloux, Belgium
| | - Amel-Baya Bouzar
- Molecular and Cellular Biology, Faculté Universitaire des Sciences Agronomiques, Gembloux, Belgium
| | - Julien Defoiche
- Molecular and Cellular Biology, Faculté Universitaire des Sciences Agronomiques, Gembloux, Belgium
| | - Arsène Burny
- Molecular and Cellular Biology, Faculté Universitaire des Sciences Agronomiques, Gembloux, Belgium
| | | | - Richard Kettmann
- Molecular and Cellular Biology, Faculté Universitaire des Sciences Agronomiques, Gembloux, Belgium
| | - Luc Willems
- Molecular and Cellular Biology, Faculté Universitaire des Sciences Agronomiques, Gembloux, Belgium
- Luc Willems, National fund for Scientific Research, Molecular and Cellular Biology laboratory, 13 avenue Maréchal Juin, 5030 Gembloux, Belgium
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Usui T, Konnai S, Ohashi K, Onuma M. Interferon-gamma expression associated with suppression of bovine leukemia virus at the early phase of infection in sheep. Vet Immunol Immunopathol 2006; 115:17-23. [PMID: 17064782 DOI: 10.1016/j.vetimm.2006.09.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2006] [Revised: 08/31/2006] [Accepted: 09/22/2006] [Indexed: 10/24/2022]
Abstract
Immunological control of bovine leukemia virus (BLV)-infection has been reported as dependent on the expression balance of types 1 and 2 cytokines. In this report, mRNA expression of interferon (IFN)-gamma and interleukin (IL)-2 (type 1 cytokines), and of IL-4 and IL-10 (type 2 cytokines) were evaluated in concanavalin A-stimulated peripheral blood mononuclear cells (PBMC) from BLV-infected sheep. Despite the same dose of BLV-infection, the extent of viral propagation was markedly different between eight individual sheep by 12 weeks post infection. The virus did not propagate well in three sheep, which showed augmented mRNA expression of IFN-gamma, a strong indicator of cell-mediated immunity, immediately after BLV-infection. Among the other five sheep having more than 2% of BLV-infected cells among PBMC at 12 weeks post infection, four sheep developed B-cell leukemia or lymphoma within 2 years after infection. These observations indicate IFN-gamma expression may play an important role in the protective mechanism against BLV propagation at the early phase of the infection.
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Affiliation(s)
- Tatsufumi Usui
- Laboratory of Infectious Diseases, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Japan
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