1
|
Oláh I, Felföldi B, Benyeda Z, Magyar A, Nagy N, Soós Á, Szőcs E. Life cycle of chicken bursal secretory dendritic cell (BSDC). Poult Sci 2024; 103:103640. [PMID: 38688195 PMCID: PMC11077032 DOI: 10.1016/j.psj.2024.103640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 03/06/2024] [Accepted: 03/07/2024] [Indexed: 05/02/2024] Open
Abstract
The transmission electron microscopy revealed a dendritic cell in the medulla of the chicken bursal follicle. This dendritic cell has a classical secretory machinery; therefore, it has been named a bursal secretory dendritic cell (BSDC). The corticomedullary epithelial arch (CMEA) encloses lymphoid-like cells, which can proliferate and after entering the medulla, begin to differentiate to immature, then mature BSDC, which discharges glycoprotein (gp). With the exhaustion of gp production, the BSDC rapidly transforms into a macrophage-like cell (Mal), which is an activated endocytic cell of innate immunity. The Mal drifts through the follicle-associated epithelium (FAE)-supporting cells into the FAE, and via FAE, the Mal is eliminated in the bursal lumen. The infectious bursal disease virus (IBDV) infection accelerates the maturation process of BSDC precursors, which results in acute emptying of CMEA and subsequently, numerous immature BSDC(s) emerge. The IBDV infection stops the gp discharge, and the gp appears in the virus-containing Mal. The Movat pentachrome staining recognizes the gp in the extracellular spaces of the medulla and after infection in the Mal. The BSDC is the primary target of the IBDV. During IBDV infection, a large number of suddenly formed Mal actively migrate into the cortex, initiating cytokine storm and recruiting heterophil granulocytes. During embryogenesis, the vimentin-positive, possibly embryonic dendritic cells provide a microenvironment for carbohydrate switch. Around hatching, these embryonic, temporary dendritic cells get the Fc receptor, which bind maternal IgY. The posthatched forms of BSDC(s) gradually replace the embryonic ones and bind their own IgY.
Collapse
Affiliation(s)
- Imre Oláh
- Department of Anatomy, Histology and Embryology Semmelweis University 1094, Budapest, Hungary.
| | | | | | - Attila Magyar
- Department of Anatomy, Histology and Embryology Semmelweis University 1094, Budapest, Hungary
| | - Nándor Nagy
- Department of Anatomy, Histology and Embryology Semmelweis University 1094, Budapest, Hungary
| | - Ádám Soós
- Department of Anatomy, Histology and Embryology Semmelweis University 1094, Budapest, Hungary
| | - Emőke Szőcs
- Department of Anatomy, Histology and Embryology Semmelweis University 1094, Budapest, Hungary
| |
Collapse
|
2
|
Oláh I, Felföldi B, Benyeda Z, Nagy N, Magyar A, Szőcs E, Soós Á. Effect of Intermediate Plus Vaccine and vvIBDV on Bursa Secretory Cells and Their Glycoprotein Production. Viruses 2023; 15:1301. [PMID: 37376601 DOI: 10.3390/v15061301] [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: 04/27/2023] [Revised: 05/25/2023] [Accepted: 05/29/2023] [Indexed: 06/29/2023] Open
Abstract
There are two types of secretory cells in the chicken bursa of Fabricius (BF): (a) interfollicular epithelial cells (IFE), and (b) bursal secretory dendritic cells (BSDC) in the medulla of bursal follicles. Both cells produce secretory granules, and the cells are highly susceptible to IBDV vaccination and infection. Before and during embryonic follicular bud formation, an electron-dense, scarlet-acid fuchsin positive substance emerges in the bursal lumen, the role of which is unknown. In IFE cells, IBDV infection may induce rapid granular discharge, and in several cells, peculiar granule formation, which suggests that the glycosylation of protein is injured in the Golgi complex. In control birds, the discharged BSDC granules appear in membrane-bound and subsequently solubilized, fine-flocculated forms. The solubilized, fine-flocculated substance is Movat-positive and can be a component of the medullary microenvironment, which prevents the medullary B lymphocytes from nascent apoptosis. Vaccination interferes with the solubilization of the membrane-bound substance, resulting in: (i) aggregation of a secreted substance around the BSDC, and (ii) solid lumps in the depleted medulla. The non-solubilized substance is possibly not "available" for B lymphocytes, resulting in apoptosis and immunosuppression. In IBDV infection, one part of the Movat-positive Mals fuse together to form a medullary, gp-containing "cyst". The other part of Mals migrate into the cortex, recruiting granulocytes and initiating inflammation. During recovery the Movat-positive substance appears as solid, extracellular lumps between the cells of FAE and Mals. Possibly the Mals and Movat-positive extracellular lumps glide into the bursal lumen via FAE to eliminate cell detritus from the medulla.
Collapse
Affiliation(s)
- Imre Oláh
- Department of Anatomy, Histology and Embryology, Semmelweis University, 1094 Budapest, Hungary
| | | | | | - Nándor Nagy
- Department of Anatomy, Histology and Embryology, Semmelweis University, 1094 Budapest, Hungary
| | - Attila Magyar
- Department of Anatomy, Histology and Embryology, Semmelweis University, 1094 Budapest, Hungary
| | - Emőke Szőcs
- Department of Anatomy, Histology and Embryology, Semmelweis University, 1094 Budapest, Hungary
| | - Ádám Soós
- Department of Anatomy, Histology and Embryology, Semmelweis University, 1094 Budapest, Hungary
| |
Collapse
|
3
|
Yun T, Hua J, Ni Z, Ye W, Chen L, Zhu Y, Zhang C. Distinct Whole Transcriptomic Profiles of the Bursa of Fabricius in Muscovy Ducklings Infected by Novel Duck Reovirus with Different Virulence. Viruses 2022; 15:111. [PMID: 36680150 PMCID: PMC9866435 DOI: 10.3390/v15010111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 12/25/2022] [Accepted: 12/28/2022] [Indexed: 01/03/2023] Open
Abstract
Novel duck reovirus (NDRV) is a newly identified reovirus that brings about more severe damage on multiple organs and mortality in various species of waterfowl. We previously characterized the transcriptomic profiles responding to NDRV in the bursa of Fabricius of Muscovy ducklings, which is a major immunological organ against virus infection. However, the molecular mechanisms of variant cell responses in the bursa of Fabricius to NDRV with different virulence is unclear. Here, we conducted a whole transcriptomic analysis to study the effects of two strains, HN10 (virulent NDRV) and JDm10 (artificially attenuated NDRV), on the bursa of Fabricius of Muscovy ducklings. We harvested a large number of differentially expressed genes (DEGs) of the bursa of Fabricius specially induced by HN10 and JDm10, and we found that HN10 induced DEGs enriched in differentiation and development in multiple organs beyond JDm10. Moreover, the ceRNA regulatory network also indicated the different connections among mRNA, lncRNA and miRNA. Interestingly, we further noticed that a population of differential expressed miRNA could particularly target to transcripts of HN10 and JDm10. We took miR-24 as an example and observed that miR-24 could reduce the transcription of GLI family zinc finger 3 (Gli3) and membrane-associated guanylate kinase, WW and PDZ domain containing 1 (Magi1) via recognition 3' UTR of these two genes by a dual luciferase reporter gene assay in vitro. However, this effect could be compromised by HN10 infection or the ectopic over-expression of the putative miR-24 targeting regions in L1 and L3 fragments of HN10. Taken together, we examined and proposed a novel regulatory competitive mechanism between transcripts of NDRV and Muscovy ducklings for miRNA. These findings may advance the understanding of the molecular pathogenesis of NDRV in Muscovy ducklings, and help provide the potential targets for vaccine and drug development against NDRV.
Collapse
Affiliation(s)
- Tao Yun
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | | | | | | | | | | | - Cun Zhang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| |
Collapse
|
4
|
Glycoprotein Production by Bursal Secretory Dendritic Cells in Normal, Vaccinated, and Infectious Bursal Disease Virus (IBDV)-Infected Chickens. Viruses 2022; 14:v14081689. [PMID: 36016310 PMCID: PMC9412378 DOI: 10.3390/v14081689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 07/21/2022] [Accepted: 07/26/2022] [Indexed: 12/04/2022] Open
Abstract
The aim of this study is to follow the gp production in IBDV-vaccinated and challenged birds. The progress of IBDV infection was monitored using anti-VP2 immunocytochemistry, light and transmission electron microscopy. In the medulla of the bursal follicle, the Movat pentachrome staining discovered an extracellular glycoprotein (gp) produced by bursal secretory dendritic cells (BSDCs). The secretory granules of BSDCs either discharge resulting in extracellular gp or fuse together forming intracellular corpuscles. The double fate of granules suggests a dual function of BSDCs: (a.) For the discharged granules, gp contributes to the medullary microenvironment (ME). (b.) The intracellular corpuscles may be the sign of BSDC transformation to a macrophage-like cell (Mal). Infectious bursal disease virus (IBDV) infection accelerates the BSDC transformation to Mal. The decreased number of BSDCs is feedback for the precursor cells of BSDCs lodging in the cortico-medullary epithelial arches (CMEA), where they proliferate. Opening the CMEA, the precursor cells enter the medulla, and differentiate to immature BSDCs. The virus uptake in the corpuscles prevents the granular discharge resulting in the absence of gp and alteration in ME. In vaccine-take birds, the mitotic rate of BSDC precursor cells cannot restore the precursor pool; therefore, in the case of IBDV challenge, the number of newly formed BSDCs is too low for outbreak of clinical disease. The BSDCs, as a primary target of IBDV, may contribute to the long-lasting immunosuppressive status of IBDV-infected chickens.
Collapse
|
5
|
Courtillon C, Allée C, Amelot M, Keita A, Bougeard S, Härtle S, Rouby JC, Eterradossi N, Soubies SM. Blood B Cell Depletion Reflects Immunosuppression Induced by Live-Attenuated Infectious Bursal Disease Vaccines. Front Vet Sci 2022; 9:871549. [PMID: 35558891 PMCID: PMC9087897 DOI: 10.3389/fvets.2022.871549] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 03/08/2022] [Indexed: 11/22/2022] Open
Abstract
Immunosuppression in poultry production is a recurrent problem worldwide, and one of the major viral immunosuppressive agents is Infectious Bursal Disease Virus (IBDV). IBDV infections are mostly controlled by using live-attenuated vaccines. Live-attenuated Infectious Bursal Disease (IBD) vaccine candidates are classified as “mild,” “intermediate,” “intermediate-plus” or “hot” based on their residual immunosuppressive properties. The immunosuppression protocol described by the European Pharmacopoeia (Ph. Eur.) uses a lethal Newcastle Disease Virus (NDV) infectious challenge to measure the interference of a given IBDV vaccine candidate on NDV vaccine immune response. A Ph. Eur.-derived protocol was thus implemented to quantify immunosuppression induced by one mild, two intermediate, and four intermediate-plus live-attenuated IBD vaccines as well as a pathogenic viral strain. This protocol confirmed the respective immunosuppressive properties of those vaccines and virus. In the search for a more ethical alternative to Ph. Eur.-based protocols, two strategies were explored. First, ex vivo viral replication of those vaccines and the pathogenic strain in stimulated chicken primary bursal cells was assessed. Replication levels were not strictly correlated to immunosuppression observed in vivo. Second, changes in blood leukocyte counts in chicks were monitored using a Ph. Eur. - type protocol prior to lethal NDV challenge. In case of intermediate-plus vaccines, the drop in B cells counts was more severe. Counting blood B cells may thus represent a highly quantitative, faster, and ethical strategy than NDV challenge to assess the immunosuppression induced in chickens by live-attenuated IBD vaccines.
Collapse
Affiliation(s)
- Céline Courtillon
- Ploufragan-Plouzané-Niort Laboratory, OIE Reference Laboratory for Infectious Bursal Disease, French Agency for Food, Environmental and Occupational Health & Safety (ANSES), VIPAC Unit, Ploufragan, France
- *Correspondence: Céline Courtillon
| | - Chantal Allée
- Ploufragan-Plouzané-Niort Laboratory, OIE Reference Laboratory for Infectious Bursal Disease, French Agency for Food, Environmental and Occupational Health & Safety (ANSES), VIPAC Unit, Ploufragan, France
| | - Michel Amelot
- Ploufragan-Plouzané-Niort Laboratory, French Agency for Food, Environmental and Occupational Health & Safety (ANSES), SELEAC Service, Ploufragan, France
| | - Alassane Keita
- Ploufragan-Plouzané-Niort Laboratory, French Agency for Food, Environmental and Occupational Health & Safety (ANSES), SELEAC Service, Ploufragan, France
| | - Stéphanie Bougeard
- Ploufragan-Plouzané-Niort Laboratory, French Agency for Food, Environmental and Occupational Health & Safety (ANSES), EPISABE Unit, Ploufragan, France
| | - Sonja Härtle
- Ludwig-Maximilians-Universität München, Veterinärwissenschaftliches Department, München, Germany
| | - Jean-Claude Rouby
- French Agency for Veterinary Medicinal Products (ANMV), French Agency for Food, Environmental and Occupational Health & Safety (ANSES), Javené, France
| | - Nicolas Eterradossi
- Ploufragan-Plouzané-Niort Laboratory, French Agency for Food, Environmental and Occupational Health & Safety (ANSES), Management Department, Ploufragan, France
| | - Sebastien Mathieu Soubies
- Ploufragan-Plouzané-Niort Laboratory, OIE Reference Laboratory for Infectious Bursal Disease, French Agency for Food, Environmental and Occupational Health & Safety (ANSES), VIPAC Unit, Ploufragan, France
| |
Collapse
|
6
|
Oláh I, Felföldi B, Benyeda Z, Kovács T, Nagy N, Magyar A. The bursal secretory dendritic cell (BSDC) and the enigmatic chB6 + macrophage-like cell (Mal). Poult Sci 2022; 101:101727. [PMID: 35172235 PMCID: PMC8851255 DOI: 10.1016/j.psj.2022.101727] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 01/07/2022] [Accepted: 01/08/2022] [Indexed: 12/23/2022] Open
Abstract
The bursal secretory dendritic cell (BSDC) was discovered more than 40 yr ago. It is a highly polarized, granulated cell, locating in the medulla of bursal follicle. The cytoplasmic granules either discharge or fuse together forming large, irregular-shaped, dense bodies. Formation of the dense bodies could be the first sign of BSDC transformation to macrophage-like cell (Mal) which is the result of terminal maturation of BSDC. The BSDC is non-phagocytic, unlike Mal. The discharged substance may be attached to the cell membrane (membrane-bound form) and after detaching, appears as a flocculated substance in the extracellular space of medulla. Movat pentachrome staining shows, that this substance is a glycoprotein (gp), which may be contributed to the microenvironment of the medulla. Medullary lymphocytes are floating in the gp. Precursors of the BSDC locate in the corticomedullary epithelial arches, which operate under the effect of Notch/Serrate signaling. The Notch signaling determines the fate of lymphoblast-like precursor cells and inhibits the appearance of immunoglobulin heavy chain. In the arches, the precursor cells proliferate and entering the medulla differentiate. The dense bodies pack the virus particles, which prevents the granular discharge, resulting in disappearance of extracellular gp, but gp emerges inside the virus containing Mal. In infected birds, the Mal contains either apoptotic cells or virus particles. If vaccination or infectious bursal disease virus (IBDV) infection use up the BSDC precursors, the recovery of follicle is critical.
Collapse
Affiliation(s)
- Imre Oláh
- Department of Anatomy, Histology and Embryology Semmelweis University, Budapest 1094, Hungary.
| | | | | | - Tamás Kovács
- Department of Anatomy, Histology and Embryology Semmelweis University, Budapest 1094, Hungary
| | - Nándor Nagy
- Department of Anatomy, Histology and Embryology Semmelweis University, Budapest 1094, Hungary
| | - Attila Magyar
- Department of Anatomy, Histology and Embryology Semmelweis University, Budapest 1094, Hungary
| |
Collapse
|
7
|
Sikandar A, Zaneb H, Nasir A, Ur Rehman A, Kashif M, Shah M, Luqman Z, Din S, Iqbal MF, Khan I, Irshad I. Effect of Bacillus subtilis on the microarchitectural development of the immune system in Salmonella-challenged broiler chickens. VET MED-CZECH 2022; 67:28-37. [PMID: 39169959 PMCID: PMC11334965 DOI: 10.17221/231/2020-vetmed] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 08/24/2021] [Indexed: 08/23/2024] Open
Abstract
The effect of Bacillus subtilis on the immune responses and morphometry of the immune organs was evaluated in broilers challenged with S. gallinarum. For this purpose, Salmonella-free birds (n = 240) were split into four groups with six replicates of ten birds each. Groups included an NC (negative control, non-infected + non-medicated), a PC-S (positive control, Salmonella-infected + non-medicated), an AT-S (Salmonella-infected + medicated with enrofloxacin), and a BS-S (Salmonella-infected + B. subtilis (2.0 × 1010 cfu/g; 0.1 g/kg) group. On day 21, the thickness of the thymus cortex and medulla, germinal centre area of the spleen, bursal follicular length and bursal follicular area increased (P < 0.05) in the BS-S when compared to the NC and PC-S groups. On day 35, the BS-S group exhibited a higher (P < 0.05) antibody titre against the Newcastle disease virus (NDV), and cortex of the thymus was thicker (P < 0.05) compared to the other groups. A decrease in the thymus medulla thickness, germinal area of the spleen and bursal follicular number were noted in the PC-S group when compared to the other treatment groups. In conclusion, the prophylactic use of B. subtilis type probiotics alleviated the stress resulting from a Salmonella gallinarum infection and improved the immune organs development and function in infected broilers.
Collapse
Affiliation(s)
- Arbab Sikandar
- Sub-campus, Jhang, University of Veterinary and Animal Sciences (UVAS), Lahore, Pakistan
| | - Hafsa Zaneb
- Department of Anatomy and Histology, University of Veterinary and Animal Sciences (UVAS), Lahore, Pakistan
| | - Amar Nasir
- Sub-campus, Jhang, University of Veterinary and Animal Sciences (UVAS), Lahore, Pakistan
| | - Aziz Ur Rehman
- Sub-campus, Jhang, University of Veterinary and Animal Sciences (UVAS), Lahore, Pakistan
| | - Muhammad Kashif
- Sub-campus, Jhang, University of Veterinary and Animal Sciences (UVAS), Lahore, Pakistan
| | - Muqader Shah
- Department of Animal Health, The University of Agriculture, Peshawar, Pakistan
| | - Zubair Luqman
- Faculty of Veterinary and Animal Sciences, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - Salahud Din
- Department of Anatomy and Histology, University of Veterinary and Animal Sciences (UVAS), Lahore, Pakistan
| | | | - Imad Khan
- College of Veterinary Sciences and Animal Husbandry, Abdul Wali Khan University, Mardan, Pakistan
| | - Irfan Irshad
- Department of Pathology, University of Veterinary and Animal Sciences (UVAS), Lahore, Pakistan
| |
Collapse
|
8
|
Felföldi B, Bódi I, Minkó K, Benyeda Z, Nagy N, Magyar A, Oláh I. Infection of bursal disease virus abrogates the extracellular glycoprotein in the follicular medulla. Poult Sci 2021; 100:101000. [PMID: 33690054 PMCID: PMC7938241 DOI: 10.1016/j.psj.2021.01.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 12/25/2020] [Accepted: 01/02/2021] [Indexed: 11/11/2022] Open
Abstract
In the medulla of bursal follicle, only the secretory dendritic cell (BSDC) is furnished with secretory machinery. The granular discharge of BSDC appears in membrane-bound and solubilized forms. Movat pentachrome staining proves that the solubilized form is a glycoprotein, which fills up the extracellular space of follicular medulla. The glycoprotein contributes to bursal microenvironment and may be attached to the surface of medullary lymphocytes. The secretory granules of BSDC may be fused, resulting in large, irregular dense bodies, which are the first sign of BSDC transformation to macrophage-like cells (Mal). To determine the effect of infectious bursal disease virus (IBDV) infection on the extracellular glycoprotein and BSDC, SPF chickens were experimentally infected with IBDV. On the surface of BSDC, the secretory substance is in high concentration, which may contribute to primary binding of IBDV to BSDC. The early distribution of IBDV infected cells is in consent with that BSDC. The IBDV infected BSDC rapidly transforms to Mal in which the glycoprotein staining appears. In the dense bodies, the packed virus particles inhibit the virus particles preventing the granular discharge, which may represent the first, early phase of virus replication cycle. The absence of extracellular glycoprotein results in alteration in the medullary microenvironment and subsequently B cell apoptosis. On the surface of medullary B cells, the solubilized secretory substance can be in much lower concentration, which results in secondary binding of IBDV to B cells. In secondary, late phase of virus replication cycle, the virus particles are not packed in electron dense substance which results in cytolytic lymphocytes and presence of virus in extracellular space. The Mal emigrates into the cortex, where induces inflammation, recruiting heterophil granulocyte and monocyte.
Collapse
Affiliation(s)
- Balázs Felföldi
- Scientific Support and Investigation Unit, Ceva-Phylaxia Co. Ltd., Ceva Animal Health, 1107 Budapest, Hungary
| | - Ildikó Bódi
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, Semmelweis University, 1094, Budapest, Hungary
| | - Krisztina Minkó
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, Semmelweis University, 1094, Budapest, Hungary
| | | | - Nándor Nagy
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, Semmelweis University, 1094, Budapest, Hungary
| | - Attila Magyar
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, Semmelweis University, 1094, Budapest, Hungary
| | - Imre Oláh
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, Semmelweis University, 1094, Budapest, Hungary.
| |
Collapse
|
9
|
Abaza MA, Elboraay EM, Saad AE, Zayan KA. Assessment of the role of intracloacal inoculation of live infectious bursal disease vaccine in breaking through maternally derived antibodies. Avian Pathol 2020; 49:581-588. [PMID: 32674593 DOI: 10.1080/03079457.2020.1796925] [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: 10/23/2022]
Abstract
Infectious bursal disease (IBD) remains a potential worldwide threat to the poultry industry despite several vaccination approaches. Because maternally derived antibodies (MDA) constitute a critical problem for IBD vaccination, we examined the efficiency of the intracloacal vaccination approach in breaking through MDA. Experiment 1 determined the ability of the vaccinal strain to multiply in the bursa of Fabricius (BF) in chicks with a high level of MDA. Using real-time polymerase chain reaction, we quantified the strain in the bursae of vaccinated and non-vaccinated chicks. Experiment 2 was performed on three groups of chicks with high levels of MDA: group 1, non-vaccinated non-challenged; group 2, non-vaccinated challenged; and group 3, vaccinated challenged. Seroconversion to IBDV was measured using enzyme-linked immunosorbent assay. Groups 2 and 3 were challenged by vvIBDV at 25 days of age. Experiment 3 studied the effect of early IBD vaccinal strain multiplication on the immune response of vaccinated and non-vaccinated chicks to other vaccines. In experiment 1, the vaccinal strain showed progressive multiplication and reached the detectable titre in BF at 12 h post-vaccination despite high MDA titre. Experiment 2 showed that chicks in group 3 had significant seroconversion against IBDV. After challenge, group 3 showed significant improvements in several measured parameters compared with group 2. Moreover, results of experiment 3 proved that early multiplication of the vaccinal strain in the BF has no significant effect on the immune system or immune response to other vaccines. These results proved the promising success of this IBD vaccination approach.RESEARCH HIGHLIGHTS IBD vaccinal strain succeeded in multiplying in BF after intracloacal inoculation.Vaccinated chicks showed significant seroconversion of IBDV antibody titres.Vaccinated chicks showed a significant protection level against vvIBDV.Early IBD vaccination did not affect the immune response to other vaccines.
Collapse
Affiliation(s)
- M A Abaza
- Avian and Rabbit Diseases Department, Faculty of Veterinary Medicine, Benha University, Kaliobyia, Egypt
| | - E M Elboraay
- Avian and Rabbit Diseases Department, Faculty of Veterinary Medicine, Benha University, Kaliobyia, Egypt
| | - A E Saad
- Avian and Rabbit Diseases Department, Faculty of Veterinary Medicine, Benha University, Kaliobyia, Egypt
| | - K A Zayan
- Avian and Rabbit Diseases Department, Faculty of Veterinary Medicine, Benha University, Kaliobyia, Egypt
| |
Collapse
|
10
|
Yasmin AR, Omar AR, Farhanah MI, Hiscox AJ, Yeap SK. Quantitative Proteomics Analysis Revealed Compromised Chicken Dendritic Cells Function at Early Stage of Very Virulent Infectious Bursal Disease Virus Infection. Avian Dis 2020; 63:275-288. [PMID: 31251527 DOI: 10.1637/11936-072418-reg.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 12/19/2018] [Indexed: 11/05/2022]
Abstract
Chicken dendritic cells (DCs) have been demonstrated to be susceptible to infectious bursal disease virus (IBDV), a causative agent of acute and immunosuppressed disease in young chicks known as infectious bursal disease. Further functional characterization of IBDV-infected DCs of chickens is required to provide a better understanding on the influence of the virus on chicken bone marrow-derived dendritic cells (BM-DCs) following very virulent (vv) IBDV infection. Membrane proteins of BM-DCs were extracted and the proteins were further denatured and reduced before performing labeling with isobaric tags for relative and absolute quantitation. The differential expression protein profiles were identified and quantified using liquid chromatography coupled with tandem mass spectrometry, and later validated using flow cytometry and real-time reverse transcriptase PCR. The analysis has identified 134 differentially regulated proteins from a total of 283 proteins (cutoff values of ≤0.67, ≥1.5, and ProtScore >1.3 at 95% confidence interval), which produced high-yield membrane fractions. The entry of vvIBDV into the plasma membrane of BM-DCs was observed at 3 hr postinfection by the disruption of several important protein molecule functions, namely apoptosis, RNA/DNA/protein synthesis, and transport and cellular organization, without the activation of proteins associated with signaling. At the later stage of infection, vvIBDV induced expression of several proteins, namely CD200 receptor 1-A, integrin alpha-5, HSP-90, cathepsin, lysosomal-associated membrane protein, and Ras-related proteins, which play crucial roles in signaling, apoptosis, stress response, and antigen processing as well as in secretion of danger-associated proteins. These findings collectively indicated that the chicken DCs are expressing various receptors regarded as potential targets for pathogen interaction during viral infection. Therefore, fundamental study of the interaction of DCs and IBDV will provide valuable information in understanding the role of professional antigen-presenting cells in chickens and their molecular interactions during IBDV infection and vaccination.
Collapse
Affiliation(s)
- A R Yasmin
- Laboratory of Vaccines and Immunotherapeutics, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.,Department of Veterinary Laboratory Diagnosis, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia,
| | - A R Omar
- Laboratory of Vaccines and Immunotherapeutics, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.,Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - M I Farhanah
- Laboratory of Vaccines and Immunotherapeutics, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - A J Hiscox
- Department of Infection Biology, Institute of Infection and Global Health, University of Liverpool, Liverpool, L3 5RF, United Kingdom
| | - S K Yeap
- China-ASEAN College of Marine Sciences, Xiamen University Malaysia, 43900 Sepang, Selangor, Malaysia
| |
Collapse
|
11
|
Zmrhal V, Slama P. Current knowledge about interactions between avian dendritic cells and poultry pathogens. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2020; 104:103565. [PMID: 31830703 DOI: 10.1016/j.dci.2019.103565] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 12/03/2019] [Accepted: 12/03/2019] [Indexed: 06/10/2023]
Abstract
In poultry production conditions today, birds are surrounded by viral, bacterial, and parasitic agents. DCs are the main antigen-presenting cells located in tissues of the body, and their role involves recognizing antigen structures, engulfing and processing them, and subsequently presenting antigen peptides on their surface by major histocompatibility complex, where T cells and B cells are stimulated and can begin appropriate cellular and antibody immune response. This unique function indicates that these cells can be used in producing vaccines, but first it is necessary to culture DCs in vitro to identify the principles of their interactions with pathogens. The following review summarizes our current knowledge about avian dendritic cells and their interactions with pathogens. It provides a basis for future studies of these unique cells and their use in vaccine development.
Collapse
Affiliation(s)
- Vladimir Zmrhal
- Department of Animal Morphology, Physiology and Genetics, Faculty of AgriSciences, Mendel University in Brno, Zemedelska 1, 613 00, Brno, Czech Republic
| | - Petr Slama
- Department of Animal Morphology, Physiology and Genetics, Faculty of AgriSciences, Mendel University in Brno, Zemedelska 1, 613 00, Brno, Czech Republic.
| |
Collapse
|
12
|
Dobner M, Auerbach M, Mundt E, Preisinger R, Icken W, Rautenschlein S. Immune responses upon in ovo HVT-IBD vaccination vary between different chicken lines. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2019; 100:103422. [PMID: 31247248 DOI: 10.1016/j.dci.2019.103422] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 06/21/2019] [Accepted: 06/21/2019] [Indexed: 06/09/2023]
Abstract
The genotype of chickens is assumed to be associated with variable immune responses. In this study a modern, moderate performing dual-purpose chicken line (DT) was compared with a high-performing layer-type (LT) as well as a broiler-type (BT) chicken line. One group of each genotype was vaccinated in ovo with a recombinant herpesvirus of turkeys expressing the virus protein VP2 of the infectious bursal disease virus (HVT-IBD) while one group of each genotype was left HVT-IBD unvaccinated (control group). Genotype associated differences in innate and adapted immune responses between the groups were determined over five weeks post hatch. HVT-IBD vaccination significantly enhanced humoral immune responses against subsequently applied live vaccines compared to non-HVT-IBD vaccinated groups at some of the investigated time points (P < 0.05). In addition HVT-IBD vaccination had depending on the genotype a significant impact on splenic macrophage as well as bursal CD4+ T-cell numbers (P < 0.05). On the other hand, the detectable genotype influence on Interferon (IFN) γ and nitric oxide (NO) release of ex vivo stimulated spleen cells was independent of HVT-IBD vaccination. The results of our study suggest considering a genotype specific vaccination regime in the field.
Collapse
Affiliation(s)
- Marina Dobner
- Clinic for Poultry, University of Veterinary Medicine, Bünteweg 17, 30559, Hannover, Germany.
| | - Monika Auerbach
- Clinic for Poultry, University of Veterinary Medicine, Bünteweg 17, 30559, Hannover, Germany.
| | - Egbert Mundt
- Boehringer Ingelheim, Veterinary Research Center GmbH Co. KG, Bemeroderstr. 31, 30559, Hannover, Germany.
| | | | - Wiebke Icken
- Lohmann Tierzucht GmbH, Am Seedeich 9-11, 27472, Cuxhaven, Germany.
| | - Silke Rautenschlein
- Clinic for Poultry, University of Veterinary Medicine, Bünteweg 17, 30559, Hannover, Germany.
| |
Collapse
|
13
|
|
14
|
Abstract
A healthy immune system is a cornerstone for poultry production. Any factor diminishing the immune responses will affect production parameters and increase cost. There are numerous factors, infectious and noninfectious, causing immunosuppression (IS) in chickens. This paper reviews the three viral diseases that most commonly induce IS or subclinical IS in chickens: Marek's disease virus (MDV), chicken infectious anemia virus (CIAV), and infectious bursal disease virus (IBDV), as well as the interactions among them. MDV-induced IS (MDV-IS) affects both humoral and cellular immune responses. It is very complex, poorly understood, and in many cases underdiagnosed. Vaccination protects against some but not all aspects of MDV-IS. CIAV induces apoptosis of the hemocytoblasts resulting in anemia, hemorrhages, and increased susceptibility to bacterial infections. It also causes apoptosis of thymocytes and dividing T lymphocytes, affecting T helper functions, which are essential for antibody production and cytotoxic T lymphocyte (CTL) functions. Control of CIAV is based on vaccination of breeders and maternal antibodies (MAbs). However, subclinical IS can occur after MAbs wane. IBDV infection affects the innate immune responses during virus replication and humoral immune responses as a consequence of the destruction of B-cell populations. Vaccines with various levels of attenuation are used to control IBDV. Interactions with MAbs and residual virulence of the vaccines need to be considered when designing vaccination plans. The interaction between IBDV, CIAV, and MDV is critical although underestimated in many cases. A proper control of IBDV is a must to have proper humoral immune responses needed to control CIAV. Equally, long-term control of MDV is not possible if chickens are coinfected with CIAV, as CIAV jeopardizes CTL functions critical for MDV control.
Collapse
Affiliation(s)
- I M Gimeno
- A Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, NC 27607
| | - K A Schat
- B Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853
| |
Collapse
|
15
|
Effects of early feeding and dietary interventions on development of lymphoid organs and immune competence in neonatal chickens: A review. Vet Immunol Immunopathol 2018; 201:1-11. [DOI: 10.1016/j.vetimm.2018.05.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Revised: 05/04/2018] [Accepted: 05/06/2018] [Indexed: 12/14/2022]
|
16
|
Farhanah MI, Yasmin AR, Khanh NP, Yeap SK, Hair-Bejo M, Omar AR. Bursal immunopathology responses of specific-pathogen-free chickens and red jungle fowl infected with very virulent infectious bursal disease virus. Arch Virol 2018; 163:2085-2097. [PMID: 29626271 DOI: 10.1007/s00705-018-3841-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2017] [Accepted: 03/28/2018] [Indexed: 01/07/2023]
Abstract
Very virulent infectious bursal disease virus (vvIBDV) targets B lymphocytes in the bursa of Fabricius (BF), causing immunosuppression and increased mortality rates in young birds. There have been few studies on the host immune response following vvIBDV infection at different inoculum doses in chickens with different genetic backgrounds. In this study, we characterized the immune responses of specific-pathogen-free (SPF) chickens and Malaysian red jungle fowl following infection with vvIBDV strain UPM0081 at 103.8 and 106.8 times the 50% embryo infectious dose (EID50). The viral burden, histopathological changes, immune cell populations, and expression of immune-related genes were measured and compared between infected and uninfected bursa at specific intervals. The populations of KUL1+, CD3+CD4+ and CD3+CD8+ cells were significantly increased in both types of chickens at 3 dpi, and there was significant early depletion of IgM+ B cells at 1 dpi in the red jungle fowl. vvIBDV infection also induced differential expression of genes that are involved in Th1 and pro-inflammatory responses, with groups receiving the higher dose (106.8 EID50) showing earlier expression of IFNG, IL12B, IL15, IL6, CXCLi2, IL28B, and TLR3 at 1 dpi. Although both chicken types showed equal susceptibility to infection, the red jungle fowl were clinically healthier than the SPF chickens despite showing more depletion of IgM+ B cells and failure to induce IFNB activation. In conclusion, high-dose vvIBDV infection caused an intense early host immune response in the infected bursa, with depletion of IgM+ B cells, bursal lesions, and cytokine expression as a response to mitigate the severity of the infection.
Collapse
Affiliation(s)
- Mohd Isa Farhanah
- Laboratory of Vaccines and Immunotherapeutics, Institute of Bioscience, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Abdul Rahaman Yasmin
- Department of Veterinary Laboratory Diagnostic, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Nguyen Phuc Khanh
- Laboratory of Vaccines and Immunotherapeutics, Institute of Bioscience, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Swee Keong Yeap
- Laboratory of Vaccines and Immunotherapeutics, Institute of Bioscience, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Mohd Hair-Bejo
- Laboratory of Vaccines and Immunotherapeutics, Institute of Bioscience, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia.,Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Abdul Rahman Omar
- Laboratory of Vaccines and Immunotherapeutics, Institute of Bioscience, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia. .,Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia.
| |
Collapse
|
17
|
Li L, Pielsticker C, Han Z, Kubasová T, Rychlik I, Kaspers B, Rautenschlein S. Infectious bursal disease virus inoculation infection modifies Campylobacter jejuni-host interaction in broilers. Gut Pathog 2018; 10:13. [PMID: 29610580 PMCID: PMC5877392 DOI: 10.1186/s13099-018-0241-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Accepted: 03/26/2018] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Campylobacter jejuni is considered as a chicken commensal. The gut microbiota and the immune status of the host may affect its colonization. Infectious bursal disease virus (IBDV) is an immunosuppressive virus of chickens, which allows secondary pathogens to invade or exacerbates their pathogenesis. To investigate the effect of IBDV-induced immunosuppression on the pathogenesis of C. jejuni, broiler chickens were inoculated with a very virulent (vv) strain of IBDV at 14 days post hatch followed by C. jejuni inoculation at 7 (Experiment A) or 9 (Experiment B) days post virus (IBDV) inoculation. RESULTS vvIBDV-infection led to a depression in caecal lamina propria B lymphocytes and the anti-C. jejuni-antibody response starting at 14 days post C. jejuni inoculation (pbi). The C. jejuni-colonization pattern was comparable between mono-inoculated groups of both experiments, but it varied for vvIBDV + C. jejuni co-inoculated groups. In Experiment A significant higher numbers of colony forming units (CFU) of C. jejuni were detected in the caecum of co-inoculated birds compared to C. jejuni-mono-inoculated birds in the early phase after C. jejuni-inoculation. In Experiment B the clearance phase was affected in the co-inoculated group with significantly higher CFU at 21 days pbi compared to the mono-inoculated group (P < 0.05). No major differences were seen in numbers local lamina propria T lymphocyte populations between C. jejuni-inoculated groups with or without vvIBDV-infection. Interestingly, both pathogens affected the microbiota composition. The consequences of these microflora changes for the host have to be elucidated further. CONCLUSION Our data suggests that the timing between viral and bacterial infection might affect the outcome of C. jejuni colonization differently. Our results confirm previous studies that anti-Campylobacter-antibodies may specifically be important for the clearance phase of the bacteria. Therefore, as vvIBDV is widely distributed in the field, it may have a significant impact on the colonization and shedding rate of C. jejuni in commercial poultry flocks. Subsequently, successful IBDV-control strategies may indirectly also benefit the gut-health of chickens.
Collapse
Affiliation(s)
- Li Li
- Clinic for Poultry, University of Veterinary Medicine Hannover, Bünteweg 17, 30559 Hannover, Germany
| | - Colin Pielsticker
- Clinic for Poultry, University of Veterinary Medicine Hannover, Bünteweg 17, 30559 Hannover, Germany
| | - Zifeng Han
- Clinic for Poultry, University of Veterinary Medicine Hannover, Bünteweg 17, 30559 Hannover, Germany
| | - Tereza Kubasová
- Veterinary Research Institute, Hudcova 70, 621 00 Brno, Czech Republic
| | - Ivan Rychlik
- Veterinary Research Institute, Hudcova 70, 621 00 Brno, Czech Republic
| | - Bernd Kaspers
- Department for Veterinary Sciences, Faculty of Veterinary Medicine, Ludwig-Maximilians-Universität München, Veterinastr. 13, 80539 Munich, Germany
| | - Silke Rautenschlein
- Clinic for Poultry, University of Veterinary Medicine Hannover, Bünteweg 17, 30559 Hannover, Germany
| |
Collapse
|
18
|
Yasmin AR, Yeap SK, Hair-Bejo M, Omar AR. Characterization of Chicken Splenic-Derived Dendritic Cells Following Vaccine and Very Virulent Strains of Infectious Bursal Disease Virus Infection. Avian Dis 2017; 60:739-751. [PMID: 27902915 DOI: 10.1637/11275-091315-reg.1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Studies have shown that infectious bursal disease virus (IBDV) infects lymphoid cells, mainly B cells and macrophages. This study was aimed to examine the involvement of chicken splenic-derived dendritic cells (ch-sDCs) in specific-pathogen-free chickens following inoculation with IBDV vaccine strain (D78) and a very virulent (vv) strain (UPM0081). Following IBDV infection, enriched activated ch-sDCs were collected by using the negative selection method and were examined based on morphology and immunophenotyping to confirm the isolation method for dendritic cells (DCs). The presence of IBDV on enriched activated ch-sDCs was analyzed based on the immunofluorescence antibody test (IFAT), flow cytometry, and quantitative real-time PCR (RT-qPCR) while the mRNAs of several cytokines were detected using RT-qPCR. The isolated ch-sDCs resembled typical DC morphologies found in mammals by having a veiled shape and they grew in clusters. Meanwhile, the expression of DC maturation markers, namely CD86 and MHCII, were increased at day 2 and day 3 following vvIBDV and vaccine strain inoculation, respectively, ranging from 10% to 40% compared to the control at 2.55% (P < 0.05). At day 3 postinfection, IBDV VP3 proteins colocalized with CD86 were readily detected via IFAT and flow cytometry in both vaccine and vvIBDV strains. In addition, enriched activated ch-sDCs were also detected as positive based on the VP4 gene by RT-qPCR; however, a higher viral load was detected on vvIBDV compared to the vaccine group. Infection with vaccine and vvIBDV strains induced the enriched activated ch-sDCs to produce proinflammatory cytokines and Th1-like cytokines from day 3 onward; however, the expressions were higher in the vvIBDV group (P < 0.05). These data collectively suggest that enriched activated ch-sDCs were permissive to IBDV infection and produced a strong inflammatory and Th1-like cytokine response following vvIBDV infection as compared to the vaccine strain.
Collapse
Affiliation(s)
- A R Yasmin
- A Institute of Bioscience.,B Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | | | - M Hair-Bejo
- A Institute of Bioscience.,B Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - A R Omar
- A Institute of Bioscience.,B Faculty of Veterinary Medicine, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| |
Collapse
|
19
|
Yasmin AR, Yeap SK, Tan SW, Hair-Bejo M, Fakurazi S, Kaiser P, Omar AR. In vitro characterization of chicken bone marrow-derived dendritic cells following infection with very virulent infectious bursal disease virus. Avian Pathol 2016; 44:452-62. [PMID: 26305169 DOI: 10.1080/03079457.2015.1084997] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Infectious bursal disease is caused by infectious bursal disease virus (IBDV), an immunosuppressive virus that targets immune cells such as B cells and macrophages. However, the involvement of dendritic cells (DCs) during IBDV infection is not well understood. In this study the in vitro effects of live and inactivated very virulent IBDV (vvIBDV) UPM0081 on bone marrow-derived DCs (BM-DC) were characterized and compared with BM-DC treated with lipopolysaccharide (LPS). Morphologically, BM-DC treated with LPS and vvIBDV showed stellate shape when compared to immature BM-DC. In addition, LPS-treated and both live and inactivated vvIBDV-infected BM-DC expressed high levels of double positive CD86 and major histocompatibility complex class II antigens (>20%). vvIBDV-infected BM-DC showed significantly higher numbers of apoptotic cells compared to LPS. Replication of vvIBDV was detected in the infected BM-DC as evidenced by the increased expression of VP3 and VP4 IBDV antigens based on flow cytometry, real-time polymerase chain reaction and immunofluorescence tests. Levels of different immune-related genes such as interleukin-1β (IL-1β), CXCLi2 (IL-8), IL-18, interferon gamma (IFN-γ, IL-12α, CCR7 and Toll-like receptor-3 (TLR3) were measured after LPS and vvIBDV treatments. However, marked differences were noticed in the onset and intensity of the gene expression between these two treatment groups. LPS was far more potent than live and inactivated vvIBDV in inducing the expression of IL-1β, IL-18 and CCR7 while expression of Th1-like cytokines, IFN-γ and IL-12α were significantly increased in the live vvIBDV treatment group. Meanwhile, the expression of TLR3 was increased in live vvIBDV-infected BM-DC as compared to control. Inactivated vvIBDV-treated BM-DC failed to stimulate IFN-γ, IL-12α and TLR3 expressions. This study suggested that BM-DC may serve as another target cells during IBDV infection which require further confirmation via in vivo studies.
Collapse
Affiliation(s)
- A R Yasmin
- a Institute of Bioscience, Universiti Putra Malaysia , Serdang 43400 , Selangor , Malaysia.,b Faculty of Veterinary Medicine , Universiti Putra Malaysia , Darul Ehsan, Serdang 43400 , Selangor , Malaysia
| | - S K Yeap
- a Institute of Bioscience, Universiti Putra Malaysia , Serdang 43400 , Selangor , Malaysia
| | - S W Tan
- a Institute of Bioscience, Universiti Putra Malaysia , Serdang 43400 , Selangor , Malaysia
| | - M Hair-Bejo
- a Institute of Bioscience, Universiti Putra Malaysia , Serdang 43400 , Selangor , Malaysia.,b Faculty of Veterinary Medicine , Universiti Putra Malaysia , Darul Ehsan, Serdang 43400 , Selangor , Malaysia
| | - S Fakurazi
- a Institute of Bioscience, Universiti Putra Malaysia , Serdang 43400 , Selangor , Malaysia
| | - P Kaiser
- c The Roslin Institute and R (D)SVS, University of Edinburgh , Easter Bush, Midlothian EH25 9RG , UK
| | - A R Omar
- a Institute of Bioscience, Universiti Putra Malaysia , Serdang 43400 , Selangor , Malaysia.,b Faculty of Veterinary Medicine , Universiti Putra Malaysia , Darul Ehsan, Serdang 43400 , Selangor , Malaysia
| |
Collapse
|
20
|
Zhao S, Jia Y, Han D, Ma H, Shah SZA, Ma Y, Teng K. Influence of the structural development of bursa on the susceptibility of chickens to infectious bursal disease virus. Poult Sci 2016; 95:2786-2794. [PMID: 27287377 DOI: 10.3382/ps/pew192] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 02/14/2016] [Accepted: 04/08/2016] [Indexed: 11/20/2022] Open
Abstract
Infectious bursal disease (IBD), caused by IBD virus (IBDV), is an acute, highly contagious immunosuppressive avian disease. Although age-dependent changes in susceptibility of chickens to IBDV have been established, the relationship between age-dependent structural changes in bursa of Fabricius and susceptibility of chickens to IBDV is still unclear. In the present study, we examined the bursa anatomical structure and pathological changes in specific-pathogen-free (SPF) white leghorn chickens 0 to 8 weeks post hatch (w.p.h.) and IBDV BC6/85-infected SPF chickens 2 to 6 w.p.h. respectively, by histology, histopathology, immunohistochemistry, and transmission electron microscopy. Almost all IBDV-exposed chickens (2 to 6 w.p.h.) were infected, with the severest bursal inflammation and complication in chickens at 3 w.p.h. Furthermore, the bursae of healthy chickens at 3 to 6 w.p.h. had decreased laminin immunoreactivities, lots of splits, and irregular shapes in basement membrane (BM) of cortico-medullary epithelium (CME), irregularly arranged CME, and large numbers of immunoglobulin M-bearing (IgM+) B lymphocytes in the medulla. The decreased barrier function of corticomedullary border and large amount of IgM+ B lymphocytes provide a chance for IBDV to easily contact and infect target cells at 3 to 6 w.p.h. By contrast, regular BM, neatly arranged CME, and few IgM+ B lymphocytes in healthy chickens younger than 2 w.p.h., as well as reduced IgM+ B lymphocytes and high immunoglobulin A (IgA) content in healthy chickens older than 8 w.p.h., were observed, suggesting that the integrity of corticomedullary border barrier, a small amount of target cells and high IgA content of the bursa could be the reasons for these chickens being less susceptible to IBDV. Although studies have shown how IBDV affects bursa, we focus first on the age-dependent changes of CME, BM of CME and IgA content, and our findings are the first to elucidate the structural development of bursa in relation to IBDV susceptibility from a morphological perspective.
Collapse
Affiliation(s)
- Sufen Zhao
- College of Veterinary Medicine, China Agricultural University, Beijing, People's Republic of China
| | - Yuanyuan Jia
- College of Veterinary Medicine, China Agricultural University, Beijing, People's Republic of China
| | - Deping Han
- College of Veterinary Medicine, China Agricultural University, Beijing, People's Republic of China
| | - Haiyan Ma
- College of Veterinary Medicine, China Agricultural University, Beijing, People's Republic of China
| | - Syed Zahid Ali Shah
- College of Veterinary Medicine, China Agricultural University, Beijing, People's Republic of China
| | - Yunfei Ma
- College of Veterinary Medicine, China Agricultural University, Beijing, People's Republic of China
| | - Kedao Teng
- College of Veterinary Medicine, China Agricultural University, Beijing, People's Republic of China
| |
Collapse
|
21
|
Aihara N, Horiuchi N, Hikichi N, Ochiai M, Hosoda Y, Ishikawa Y, Shimazaki Y, Oishi K. Immunoreactivity and morphological changes of bursal follicles in chickens infected with vaccine or wild-type strains of the infectious bursal disease virus. J Vet Med Sci 2015; 77:913-8. [PMID: 25866403 PMCID: PMC4565812 DOI: 10.1292/jvms.14-0599] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Infectious bursal disease (IBD) is characterized by immunosuppression due to the depletion of lymphocytes in the atrophied bursa of Fabricius (BF). We have sometimes encountered contradictory findings: chickens infected with the vaccine IBD virus (IBDV) strain have sometimes exhibited a highly atrophied BF, but not immunosuppression. In this study, chickens administered vaccine or wild-type strains of IBDV were later vaccinated with the B1 strain of the Newcastle disease virus (NDV). Bursal changes were examined histologically with a focus on the bursal follicle. The immunoreactivity to NDV was also evaluated with the hemagglutination inhibition test. In gross examination, we observed a few chickens with a severely atrophied BF in vaccine strain-administered groups (vaccine groups), and the level of severity was the same as that in the wild-type strain-administered group (wild-type group). However, these chickens retained humoral antibody responses to NDV and were revealed to possess a higher number of bursal follicles than those of the wild-type group. These results indicated that macroscopic evaluation dose not accurately reflect the immunoreactivity and degree of bursal damage in IBDV-administered chickens. We also found non-immunosuppressed chickens in the wild-type group. These non-immunosuppressed chickens retained a significantly higher number of normal follicles and total follicles according to our statistical analysis. Furthermore, a high correlation coefficient between the NDV-HI titer and the number of normal follicles was found in the wild-type group. These results implied that the retained number of normal follicles is important for the immunoreactivity of chickens infected with IBDV.
Collapse
Affiliation(s)
- Naoyuki Aihara
- National Veterinary Assay Laboratory, Ministry of Agriculture, Forestry and Fisheries, 1-15-1 Tokura, Kokubunji, Tokyo 185-8511, Japan
| | | | | | | | | | | | | | | |
Collapse
|
22
|
Abstract
Subclinical immunosuppression in chickens is an important but often underestimated factor in the subsequent development of clinical disease. Immunosuppression can be caused by pathogens such as chicken infectious anemia virus, infectious bursal disease virus, reovirus, and some retroviruses (e.g., reticuloendotheliosis virus). Mycotoxins and stress, often caused by poor management practices, can also cause immunosuppression. The effects on the innate and acquired immune responses and the mechanisms by which mycotoxins, stress and infectious agents cause immunosuppression are discussed. Immunoevasion is a common ploy by which viruses neutralize or evade immune responses. DNA viruses such as herpesvirus and poxvirus have multiple genes, some of them host-derived, which interfere with effective innate or acquired immune responses. RNA viruses may escape acquired humoral and cellular immune responses by mutations in protective antigenic epitopes (e.g., avian influenza viruses), while accessory non-structural proteins or multi-functional structural proteins interfere with the interferon system (e.g., Newcastle disease virus).
Collapse
|
23
|
Ingrao F, Rauw F, Lambrecht B, van den Berg T. Infectious Bursal Disease: a complex host-pathogen interaction. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2013; 41:429-38. [PMID: 23567344 DOI: 10.1016/j.dci.2013.03.017] [Citation(s) in RCA: 100] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Revised: 03/21/2013] [Accepted: 03/22/2013] [Indexed: 05/06/2023]
Abstract
Infectious Bursal Disease (IBD) is caused by a small, non-enveloped virus, highly resistant in the outside environment. Infectious Bursal Disease Virus (IBDV) targets the chicken's immune system in a very comprehensive and complex manner by destroying B lymphocytes, attracting T cells and activating macrophages. As an RNA virus, IBDV has a high mutation rate and may thus give rise to viruses with a modified antigenicity or increased virulence, as emphasized during the last decades. The molecular basis of pathogenicity and the exact cause of clinical disease and death are still poorly understood, as it is not clearly related to the severity of the lesions and the extent of the bursal damage. Recent works however, pointed out the role of an exacerbated innate immune response during the early stage of the infection with upregulated production of promediators that will induce a cytokine storm. In the case of IBDV, immunosuppression is both a direct consequence of the infection of specific target immune cells and an indirect consequence of the interactions occurring in the immune network of the host. Recovery from disease or subclinical infection will be followed by immunosuppression with more serious consequences if the strain is very virulent and infection occurs early in life. Although the immunosuppression caused by IBDV is principally directed towards B-lymphocytes, an effect on cell-mediated immunity (CMI) has also been demonstrated therefore increasing the impact of IBDV on the immunocompetence of the chicken. In addition to its zootechnical impact and its role in the development of secondary infections, it may affect the immune response of the chicken to subsequent vaccinations, essential in all types of intensive farming. Recent progress in the field of avian immunology has allowed a better knowledge of the immunological mechanisms involved in the disease but also should give improved tools for the measurement of immunosuppression in the field situation. Although satisfactory protection may be provided by the induction of high neutralizing antibody titres, interference from parental antibodies with vaccination has become the most important obstacle in the establishment of control programs. In this context, recombinant HVT and immune complex vaccines show promising results.
Collapse
Affiliation(s)
- Fiona Ingrao
- Avian Virology & Immunology Unit, Veterinary and Agrochemical Research Centre, Brussels, Belgium
| | | | | | | |
Collapse
|
24
|
Madej JP, Chrząstek K, Piasecki T, Wieliczko A. New insight into the structure, development, functions and popular disorders of bursa Fabricii. Anat Histol Embryol 2013; 42:321-31. [PMID: 23438192 DOI: 10.1111/ahe.12026] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2012] [Accepted: 12/01/2012] [Indexed: 01/28/2023]
Abstract
Humoral immune responses in birds, contrary to mammals, depend on the normal functioning of bursa Fabricii. Recent studies have delivered new information about the structure, development and origin of cells that compose the bursa environment. Several viral infections affect bursa, causing lymphocyte depletion or excessive proliferation. This review summarizes data on the development and histology of healthy bursa and introduces some common disorders that affect this organ.
Collapse
Affiliation(s)
- J P Madej
- Department of Histology and Embryology, Faculty of Veterinary Medicine, Wrocław University of Environmental and Life Sciences, ul. Norwida 25/27, 50-375, Wrocław, Poland
| | | | | | | |
Collapse
|
25
|
Antibody to VP4 protein is an indicator discriminating pathogenic and nonpathogenic IBDV infection. Mol Immunol 2009; 46:1964-9. [DOI: 10.1016/j.molimm.2009.03.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2009] [Revised: 03/12/2009] [Accepted: 03/14/2009] [Indexed: 11/23/2022]
|
26
|
Nagy N, Oláh I. Locally applied testosterone is a novel method to influence the development of the avian bursa of Fabricius. J Immunol Methods 2009; 343:97-102. [DOI: 10.1016/j.jim.2009.01.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2008] [Revised: 01/19/2009] [Accepted: 01/20/2009] [Indexed: 11/15/2022]
|