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Pizzol MSD, Ibelli AMG, Cantão ME, Campos FG, de Oliveira HC, de Oliveira Peixoto J, Fernandes LT, de Castro Tavernari F, Morés MAZ, Bastos APA, Ledur MC. Differential expression of miRNAs associated with pectoral myopathies in young broilers: insights from a comparative transcriptome analysis. BMC Genomics 2024; 25:104. [PMID: 38262955 PMCID: PMC10807067 DOI: 10.1186/s12864-024-09983-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 01/06/2024] [Indexed: 01/25/2024] Open
Abstract
INTRODUCTION White Striping (WS) and Wooden Breast (WB) pectoral myopathies are relevant disorders for contemporary broiler production worldwide. Several studies aimed to elucidate the genetic components associated with the occurrence of these myopathies. However, epigenetic factors that trigger or differentiate these two conditions are still unclear. The aim of this study was to identify miRNAs differentially expressed (DE) between normal and WS and WB-affected broilers, and to verify the possible role of these miRNAs in metabolic pathways related to the manifestation of these pectoral myopathies in 28-day-old broilers. RESULTS Five miRNAs were DE in the WS vs control (gga-miR-375, gga-miR-200b-3p, gga-miR-429-3p, gga-miR-1769-5p, gga-miR-200a-3p), 82 between WB vs control and 62 between WB vs WS. Several known miRNAs were associated with WB, such as gga-miR-155, gga-miR-146b, gga-miR-222, gga-miR-146-5p, gga-miR- 29, gga-miR-21-5p, gga-miR-133a-3p and gga-miR-133b. Most of them had not previously been associated with the development of this myopathy in broilers. We also have predicted 17 new miRNAs expressed in the broilers pectoral muscle. DE miRNA target gene ontology analysis enriched 6 common pathways for WS and WB compared to control: autophagy, insulin signaling, FoxO signaling, endocytosis, and metabolic pathways. The WS vs control contrast had two unique pathways, ERBB signaling and the mTOR signaling, while WB vs control had 14 unique pathways, with ubiquitin-mediated proteolysis and endoplasmic reticulum protein processing being the most significant. CONCLUSIONS We found miRNAs DE between normal broilers and those affected with breast myopathies at 28 days of age. Our results also provide novel evidence of the miRNAs role on the regulation of WS and in the differentiation of both WS and WB myopathies. Overall, our study provides insights into miRNA-mediated and pathways involved in the occurrence of WS and WB helping to better understand these chicken growth disorders in an early age. These findings can help developing new approaches to reduce these complex issues in poultry production possibly by adjustments in nutrition and management conditions. Moreover, the miRNAs and target genes associated with the initial stages of WS and WB development could be potential biomarkers to be used in selection to reduce the occurrence of these myopathies in broiler production.
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Affiliation(s)
- Mariane Spudeit Dal Pizzol
- Programa de Pós-Graduação em Zootecnia, Universidade do Estado de Santa Catarina, UDESC-Oeste, Chapecó, Santa Catarina, Brazil
| | - Adriana Mércia Guaratini Ibelli
- Embrapa Suínos e Aves, Concórdia, Santa Catarina, Brazil
- Programa de Pós-Graduação em Ciências Veterinárias, Universidade Estadual do Centro Oeste, Guarapuava, Paraná, Brazil
- Present Address: Embrapa Pecuária Sudeste, São Carlos, São Paulo, Brazil
| | | | - Francelly Geralda Campos
- Departamento de Zootecnia, Programa de Pós- Graduação em Zootecnia, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - Haniel Cedraz de Oliveira
- Departamento de Zootecnia, Programa de Pós- Graduação em Zootecnia, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - Jane de Oliveira Peixoto
- Embrapa Suínos e Aves, Concórdia, Santa Catarina, Brazil
- Programa de Pós-Graduação em Ciências Veterinárias, Universidade Estadual do Centro Oeste, Guarapuava, Paraná, Brazil
| | | | - Fernando de Castro Tavernari
- Programa de Pós-Graduação em Zootecnia, Universidade do Estado de Santa Catarina, UDESC-Oeste, Chapecó, Santa Catarina, Brazil
- Embrapa Suínos e Aves, Concórdia, Santa Catarina, Brazil
| | | | - Ana Paula Almeida Bastos
- Embrapa Suínos e Aves, Concórdia, Santa Catarina, Brazil
- Programa de Pós-Graduação em Ciências Veterinárias, Universidade Estadual do Centro Oeste, Guarapuava, Paraná, Brazil
| | - Mônica Corrêa Ledur
- Programa de Pós-Graduação em Zootecnia, Universidade do Estado de Santa Catarina, UDESC-Oeste, Chapecó, Santa Catarina, Brazil.
- Embrapa Suínos e Aves, Concórdia, Santa Catarina, Brazil.
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Santos CE, de Oliveira Peixoto J, Fernandes LT, Marcelino DEP, Kawski VL, Neis FT, Ledur MC, Ibelli AMG. Upregulated genes in articular cartilage may help to counteract femoral head separation in broilers with 21 days of age. Res Vet Sci 2022; 147:92-95. [DOI: 10.1016/j.rvsc.2022.04.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 03/04/2022] [Accepted: 04/19/2022] [Indexed: 11/26/2022]
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Goldoni I, Ibelli AMG, Fernandes LT, Peixoto JDO, Hul LM, Cantão ME, Gouveia JJDS, Ledur MC. Comprehensive Analyses of Bone and Cartilage Transcriptomes Evince Ion Transport, Inflammation and Cartilage Development-Related Genes Involved in Chickens’ Femoral Head Separation. Animals (Basel) 2022; 12:ani12060788. [PMID: 35327184 PMCID: PMC8944783 DOI: 10.3390/ani12060788] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 03/15/2022] [Accepted: 03/17/2022] [Indexed: 12/13/2022] Open
Abstract
Simple Summary Femoral head necrosis (FHN) and other locomotor problems cause severe impacts on the poultry industry due to huge economic losses and reduced animal welfare. Femoral head separation (FHS), the initial phase of FHN, is usually a subclinical condition characterized by the detachment of articular cartilage from the bone. In this study, we aimed to identify genes and biological processes involved with FHS in broilers. A better understanding of the FHS molecular mechanisms can help to develop strategies to reduce this condition in chickens. Here, we described several genes that have their expression altered in the articular cartilage and femur when normal and FHS-affected animals were compared. Furthermore, genetic variants were found differing between the studied groups. Therefore, performing an integrated analysis of these datasets, we were able to detect genes and variants related to FHS in chickens. Some of them, such as SLC4A1, RHAG, ANK1, MKNK2, SPTB, ADA, C7 and EPB420 genes were highlighted and should be further explored to validate them as candidates to FHS and FHN in chickens and possibly in humans. Abstract Femoral head separation (FHS) is usually a subclinical condition characterized by the detachment of articular cartilage from the bone. In this study, a comprehensive analysis identifying shared and exclusive expression profiles, biological processes (BP) and variants related to FHS in the femoral articular cartilage and growth plate in chickens was performed through RNA sequencing analysis. Thirty-six differentially expressed (DE) genes were shared between femoral articular cartilage (AC) and growth plate (GP) tissues. Out of those, 23 genes were enriched in BP related to ion transport, translation factors and immune response. Seventy genes were DE exclusively in the AC and 288 in the GP. Among the BP of AC, the response against bacteria can be highlighted, and for the GP tissue, the processes related to chondrocyte differentiation and cartilage development stand out. When the chicken DE genes were compared to other datasets, eight genes (SLC4A1, RHAG, ANK1, MKNK2, SPTB, ADA, C7 and EPB420) were shared between chickens and humans. Furthermore, 89 variants, including missense in the SPATS2L, PRKAB1 and TRIM25 genes, were identified between groups. Therefore, those genes should be more explored to validate them as candidates to FHS/FHN in chickens and humans.
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Affiliation(s)
- Iara Goldoni
- Programa de Pós-Graduação em Ciências Veterinárias, Universidade Estadual do Centro-Oeste, R. Salvatore Renna, 875, Guarapuava 85015-430, PR, Brazil; (I.G.); (J.d.O.P.); (L.M.H.)
| | - Adriana Mércia Guaratini Ibelli
- Programa de Pós-Graduação em Ciências Veterinárias, Universidade Estadual do Centro-Oeste, R. Salvatore Renna, 875, Guarapuava 85015-430, PR, Brazil; (I.G.); (J.d.O.P.); (L.M.H.)
- Embrapa Suínos e Aves, Rodovia BR 153, km 110, Concórdia 89715-899, SC, Brazil; (L.T.F.); (M.E.C.)
- Correspondence: (A.M.G.I.); (M.C.L.); Tel.: +55-49-3441-3217 (A.M.G.I.); +55-49-3441-0411 (M.C.L.)
| | - Lana Teixeira Fernandes
- Embrapa Suínos e Aves, Rodovia BR 153, km 110, Concórdia 89715-899, SC, Brazil; (L.T.F.); (M.E.C.)
| | - Jane de Oliveira Peixoto
- Programa de Pós-Graduação em Ciências Veterinárias, Universidade Estadual do Centro-Oeste, R. Salvatore Renna, 875, Guarapuava 85015-430, PR, Brazil; (I.G.); (J.d.O.P.); (L.M.H.)
- Embrapa Suínos e Aves, Rodovia BR 153, km 110, Concórdia 89715-899, SC, Brazil; (L.T.F.); (M.E.C.)
| | - Ludmila Mudri Hul
- Programa de Pós-Graduação em Ciências Veterinárias, Universidade Estadual do Centro-Oeste, R. Salvatore Renna, 875, Guarapuava 85015-430, PR, Brazil; (I.G.); (J.d.O.P.); (L.M.H.)
| | - Maurício Egídio Cantão
- Embrapa Suínos e Aves, Rodovia BR 153, km 110, Concórdia 89715-899, SC, Brazil; (L.T.F.); (M.E.C.)
| | - João José de Simoni Gouveia
- Programa de Pós-Graduação em Ciências Veterinárias no Semiárido, Universidade Federal do Vale do São Francisco, UNIVASF, Rodovia BR 407, 12 Lote 543, Petrolina 56300-000, PE, Brazil;
| | - Mônica Corrêa Ledur
- Embrapa Suínos e Aves, Rodovia BR 153, km 110, Concórdia 89715-899, SC, Brazil; (L.T.F.); (M.E.C.)
- Programa de Pós-Graduação em Zootecnia, UDESC-Oeste, Rua Beloni Trombeta Zanin, 680E, Chapecó 89815-630, SC, Brazil
- Correspondence: (A.M.G.I.); (M.C.L.); Tel.: +55-49-3441-3217 (A.M.G.I.); +55-49-3441-0411 (M.C.L.)
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Hul LM, Ibelli AMG, Savoldi IR, Marcelino DEP, Fernandes LT, Peixoto JO, Cantão ME, Higa RH, Giachetto PF, Coutinho LL, Ledur MC. Differentially expressed genes in the femur cartilage transcriptome clarify the understanding of femoral head separation in chickens. Sci Rep 2021; 11:17965. [PMID: 34504189 PMCID: PMC8429632 DOI: 10.1038/s41598-021-97306-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 08/24/2021] [Indexed: 02/08/2023] Open
Abstract
Locomotor problems are among one of the main concerns in the current poultry industry, causing major economic losses and affecting animal welfare. The most common bone anomalies in the femur are dyschondroplasia, femoral head separation (FHS), and bacterial chondronecrosis with osteomyelitis (BCO), also known as femoral head necrosis (FHN). The present study aimed to identify differentially expressed (DE) genes in the articular cartilage (AC) of normal and FHS-affected broilers by RNA-Seq analysis. In the transcriptome analysis, 12,169 genes were expressed in the femur AC. Of those, 107 genes were DE (FDR < 0.05) between normal and affected chickens, of which 9 were downregulated and 98 were upregulated in the affected broilers. In the gene-set enrichment analysis using the DE genes, 79 biological processes (BP) were identified and were grouped into 12 superclusters. The main BP found were involved in the response to biotic stimulus, gas transport, cellular activation, carbohydrate-derived catabolism, multi-organism regulation, immune system, muscle contraction, multi-organism process, cytolysis, leukocytes and cell adhesion. In this study, the first transcriptome analysis of the broilers femur articular cartilage was performed, and a set of candidate genes (AvBD1, AvBD2, ANK1, EPX, ADA, RHAG) that could trigger changes in the broiler´s femoral growth plate was identified. Moreover, these results could be helpful to better understand FHN in chickens and possibly in humans.
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Affiliation(s)
- Ludmila Mudri Hul
- grid.412329.f0000 0001 1581 1066Programa de Pós-Graduação em Ciências Veterinárias, Universidade Estadual do Centro-Oeste, Guarapuava, PR 85040-080 Brazil
| | - Adriana Mércia Guaratini Ibelli
- grid.412329.f0000 0001 1581 1066Programa de Pós-Graduação em Ciências Veterinárias, Universidade Estadual do Centro-Oeste, Guarapuava, PR 85040-080 Brazil ,Embrapa Suínos e Aves, Concórdia, SC 89715-899 Brazil
| | - Igor Ricardo Savoldi
- grid.412287.a0000 0001 2150 7271Programa de Pós-Graduação em Zootecnia, Centro de Educação Superior do Oeste (CEO), Universidade do Estado de Santa Catarina, UDESC, Chapecó, SC 89815-630 Brazil
| | | | | | - Jane Oliveira Peixoto
- grid.412329.f0000 0001 1581 1066Programa de Pós-Graduação em Ciências Veterinárias, Universidade Estadual do Centro-Oeste, Guarapuava, PR 85040-080 Brazil ,Embrapa Suínos e Aves, Concórdia, SC 89715-899 Brazil
| | | | - Roberto Hiroshi Higa
- grid.460200.00000 0004 0541 873XEmbrapa Informática Agropecuária, Campinas, SP 70770-901 Brazil
| | | | - Luiz Lehmann Coutinho
- grid.11899.380000 0004 1937 0722Departamento de Zootecnia, Escola Superior de Agricultura “Luiz de Queiroz”, Universidade de São Paulo, Piracicaba, SP 13418-900 Brazil
| | - Mônica Corrêa Ledur
- Embrapa Suínos e Aves, Concórdia, SC 89715-899 Brazil ,grid.412287.a0000 0001 2150 7271Programa de Pós-Graduação em Zootecnia, Centro de Educação Superior do Oeste (CEO), Universidade do Estado de Santa Catarina, UDESC, Chapecó, SC 89815-630 Brazil
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Marciano CMM, Ibelli AMG, Marchesi JAP, de Oliveira Peixoto J, Fernandes LT, Savoldi IR, do Carmo KB, Ledur MC. Differential Expression of Myogenic and Calcium Signaling-Related Genes in Broilers Affected With White Striping. Front Physiol 2021; 12:712464. [PMID: 34381378 PMCID: PMC8349984 DOI: 10.3389/fphys.2021.712464] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 07/05/2021] [Indexed: 01/10/2023] Open
Abstract
White Striping (WS) has been one of the main issues in poultry production in the last years since it affects meat quality. Studies have been conducted to understand WS and other myopathies in chickens, and some biological pathways have been associated to the prevalence of these conditions, such as extracellular calcium level, oxidative stress, localized hypoxia, possible fiber-type switching, and cellular repairing. Therefore, to understand the genetic mechanisms involved in WS, 15 functional candidate genes were chosen to be analyzed by quantitative PCR (qPCR) in breast muscle of normal and WS-affected chickens. To this, the pectoral major muscle (PMM) of 16 normal and 16 WS-affected broilers were collected at 42 days of age and submitted to qRT-PCR analysis. Out of the 15 genes studied, six were differentially expressed between groups. The CA2, CSRP3, and PLIN1 were upregulated, while CALM2, DNASE1L3, and MYLK2 genes were downregulated in the WS-affected when compared to the normal broilers. These findings highlight that the disruption on muscle and calcium signaling pathways can possibly be triggering WS in chickens. Improving our understanding on the genetic basis involved with this myopathy might contribute for reducing WS in poultry production.
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Affiliation(s)
| | - Adriana Mércia Guaratini Ibelli
- Embrapa Suínos e Aves, Concórdia, Brazil.,Programa de Pós-Graduação em Ciências Veterinárias, Universidade Estadual do Centro-Oeste, Guarapuava, Brazil
| | | | - Jane de Oliveira Peixoto
- Embrapa Suínos e Aves, Concórdia, Brazil.,Programa de Pós-Graduação em Ciências Veterinárias, Universidade Estadual do Centro-Oeste, Guarapuava, Brazil
| | | | - Igor Ricardo Savoldi
- Programa de Pós-Graduação em Zootecnia, Universidade do Estado de Santa Catarina (UDESC-Oeste), Chapecó, Brazil
| | | | - Mônica Corrêa Ledur
- Programa de Pós-Graduação em Zootecnia, Universidade do Estado de Santa Catarina (UDESC-Oeste), Chapecó, Brazil.,Embrapa Suínos e Aves, Concórdia, Brazil
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Marciano CMM, Ibelli AMG, Peixoto JDO, Savoldi IR, do Carmo KB, Fernandes LT, Ledur MC. Stable reference genes for expression studies in breast muscle of normal and white striping-affected chickens. Mol Biol Rep 2019; 47:45-53. [PMID: 31583571 DOI: 10.1007/s11033-019-05103-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 09/24/2019] [Indexed: 02/08/2023]
Abstract
The normalization with proper reference genes is a crucial step to obtain accurate mRNA expression levels in quantitative PCR (qPCR) studies. Therefore, in this study, 10 reference candidate genes were evaluated to determine their stability in normal pectoralis major muscle of broilers and those counterparts affected with White Striping (WS) myopathy at 42 days age. Four different tools were used for ranking the most stable genes: GeNorm, NormFinder, BestKeeper and Comparative Ct (ΔCt), and a general ranking was performed using the RankAggreg tool to select the best reference genes among all tools. From the 10 genes evaluated in the breast muscle of broilers, 8 were amplified. Most of the algorithms/tools indicated the same two genes, RPL30 and RPL5, as the most stable in the broilers breast muscle. In addition, there was agreement among the tools for the least stable genes: MRPS27, GAPDH and RPLP1 in the broilers breast muscle. Therefore, it is interesting to note that even with different tools for evaluating gene expression, there was consensus on the most and least stable genes. These results indicate that the Ribosomal protein L30 (RPL30) and Ribosomal protein L5 (RPL5) can be recommended for accurate normalization in qPCR studies with chicken pectoralis major muscle affected with White Striping and other myopathies.
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Affiliation(s)
- Caroline Michele Marinho Marciano
- Programa de Pós-Graduação em Zootecnia, Universidade do Estado de Santa Catarina, UDESC-Oeste, Rua Beloni Trombeta Zanin 680E, Chapecó, Santa Catarina, 89815-630, Brazil
| | - Adriana Mércia Guaratini Ibelli
- Embrapa Suínos e Aves, Rodovia BR-153, Km 110, Distrito de Tamanduá, Caixa Postal: 321, Concórdia, Santa Catarina, 89715-899, Brazil.,Programa de Pós-Graduação em Ciências Veterinárias, Universidade Estadual do Centro-Oeste, Alameda Élio Antonio Dalla Vecchia, 838, Guarapuava-Paraná, 85040-167, Brazil
| | - Jane de Oliveira Peixoto
- Embrapa Suínos e Aves, Rodovia BR-153, Km 110, Distrito de Tamanduá, Caixa Postal: 321, Concórdia, Santa Catarina, 89715-899, Brazil.,Programa de Pós-Graduação em Ciências Veterinárias, Universidade Estadual do Centro-Oeste, Alameda Élio Antonio Dalla Vecchia, 838, Guarapuava-Paraná, 85040-167, Brazil
| | - Igor Ricardo Savoldi
- Programa de Pós-Graduação em Zootecnia, Universidade do Estado de Santa Catarina, UDESC-Oeste, Rua Beloni Trombeta Zanin 680E, Chapecó, Santa Catarina, 89815-630, Brazil
| | - Kamilla Bleil do Carmo
- Universidade do Contestado, Rua Victor Sopelsa, 3000, Concórdia, Santa Catarina, 89711-330, Brazil
| | - Lana Teixeira Fernandes
- Centro de Diagnóstico de Sanidade Animal, Rodovia BR-153, Km 110, Distrito de Tamanduá, Caixa Postal: 321, Concórdia, Santa Catarina, 89715-899, Brazil
| | - Mônica Corrêa Ledur
- Programa de Pós-Graduação em Zootecnia, Universidade do Estado de Santa Catarina, UDESC-Oeste, Rua Beloni Trombeta Zanin 680E, Chapecó, Santa Catarina, 89815-630, Brazil. .,Embrapa Suínos e Aves, Rodovia BR-153, Km 110, Distrito de Tamanduá, Caixa Postal: 321, Concórdia, Santa Catarina, 89715-899, Brazil.
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Gava D, Serrão VHB, Fernandes LT, Cantão ME, Ciacci-Zanella JR, Morés N, Schaefer R. Structure analysis of capsid protein of Porcine circovirus type 2 from pigs with systemic disease. Braz J Microbiol 2017; 49:351-357. [PMID: 29128395 PMCID: PMC5914143 DOI: 10.1016/j.bjm.2017.08.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 06/22/2017] [Accepted: 08/01/2017] [Indexed: 11/16/2022] Open
Abstract
Economic losses with high mortality rate associated with Porcine circovirus type 2 (PCV2) is reported worldwide. PCV2 commercial vaccine was introduced in 2006 in U.S. and in 2008 in Brazil. Although PCV2 vaccines have been widely used, cases of PCV2 systemic disease have been reported in the last years. Eleven nursery or fattening pigs suffering from PCV2 systemic disease were selected from eight PCV2-vaccinated farms with historical records of PCV2 systemic disease in Southern Brazil. PCV2 genomes were amplified and sequenced from lymph node samples of selected pigs. The comparison among the ORF2 amino acid sequences of PCV2 isolates revealed three amino acid substitutions in the positions F57I, N178S and A190T, respectively. Using molecular modeling, a structural model for the capsid protein of PCV2 was built. Afterwards, the mutated residues positions were identified in the model. The structural analysis of the mutated residues showed that the external residue 190 is close to an important predicted region for antibodies recognition. Therefore, changes in the viral protein conformation might lead to an inefficient antibody binding and this could be a relevant mechanism underlying the recent vaccine failures observed in swine farms in Brazil.
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Affiliation(s)
| | - Vitor Hugo Balasco Serrão
- Universidade de São Paulo - USP, Instituto de Física de São Carlos, São Carlos, 13566-590, SP, Brazil
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Hansen MS, Segalés J, Fernandes LT, Grau-Roma L, Bille-Hansen V, Larsen LE, Nielsen OL. Detection of porcine circovirus type 2 and viral replication by in situ hybridization in primary lymphoid organs from naturally and experimentally infected pigs. Vet Pathol 2013; 50:980-8. [PMID: 23482522 DOI: 10.1177/0300985813480805] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Porcine circovirus type 2 (PCV2) infection is the cause of postweaning multisystemic wasting syndrome (PMWS). It has been speculated whether cell types permissive of replication are found in the primary lymphoid organs and whether infection of these tissues has an important role in the pathogenesis of PMWS. The aim of this study was to determine if primary lymphoid organ cells support viral replication during PCV2 infection. This was done by histopathological examination of thymus and bone marrow from pigs experimentally inoculated with PCV2 (n = 24), mock-infected pigs (n = 12), pigs naturally affected by PMWS (n = 33), and age-matched healthy control animals (n = 29). In situ hybridization (ISH) techniques were used to detect PCV2 nucleic acid irrespective of replicative status (complementary probe, CP) or to detect only the replicative form of the virus (replicative form probe, RFP). PCV2 was not detected in the experimentally PCV2-inoculated pigs or the control animals. Among the PMWS-affected pigs, 19 of 20 (95%) thymuses were positive for PCV2 by CP ISH, and 7 of 19 (37%) of these also supported viral replication. By CP ISH, PCV2 was detected in 16 of 33 (48%) bone marrow samples, and 5 of 16 (31%) of these also supported replication. The 2 ISH probes labeled the same cell types, which were histiocytes in both organs and lymphocytes in thymus. The RFP labeled fewer cells than the CP. Thus, PCV2 nucleic acids and replication were found in bone marrow and thymus of PMWS-affected pigs, but there was no evidence that primary lymphoid organ cells are major supporters of PCV2 replication.
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Affiliation(s)
- M S Hansen
- Department of Veterinary Diagnostics and Research, The National Veterinary Institute, Technical University of Denmark (DTU), Bülowsvej 27, DK-1870 Frederiksberg C, Denmark.
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Fernandes LT, Tomás A, Bensaid A, Pérez-Enciso M, Sibila M, Sánchez A, Segalés J. Exploratory study on the transcriptional profile of pigs subclinically infected with porcine circovirus type 2. Anim Biotechnol 2009; 20:96-109. [PMID: 19544206 DOI: 10.1080/10495390902885785] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
The aim of this exploratory work was to use a microarray-based approach to study the global transcriptome profile of caesarean-derived, colostrum-deprived (CDCD) piglets experimentally infected with porcine circovirus type 2 (PCV2). PCV2-inoculated piglets developed a subclinical infection, as confirmed by serology, in situ hybridization and quantitative PCR. Total RNA from mesenteric lymph nodes and lungs was obtained by duplicate from 2 control and 2 PCV2-inoculated piglets and was hybridized to Affymetrix Porcine GeneChip. Among the 24,123 probesets studied, 25 and 33 were found to be significantly differentially expressed (DE) between control and PCV2 groups for mesenteric lymph node and lung, respectively. Most up-regulated genes in PCV2 group were closely related to the immune response, such as cytokines (CCL4L, CXCL9, CXCL11), MHC binding molecules (TCRalpha, CD8alpha), immunoglubulins (IgG) and T cell activation (LCK, KLRK1, RASSF2, GBP2). Quantitative real-time PCR was performed to verify the microarray results. Therefore, from a transcriptional point of view, PCV2-inoculated pigs were apparently able to activate a cell-mediated response and develop PCV2-specific antibodies, which probably led to a subclinical infection. The results from this study indicate that a microarray based approach is a helpful tool in order to better understand the pathogenesis of PCV2 infection.
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Affiliation(s)
- L T Fernandes
- Centre de Recerca en Sanitat Animal, UAB-IRTA, Campus de la Universitat Autonoma de Barcelona Bellaterra, Bellaterra, Barcelona, Spain.
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Ciacci-Zanella JR, Simon NL, Pinto LS, Viancelli A, Fernandes LT, Hayashi M, Dellagostin OA, Esteves PA. Detection of porcine Circovirus type 2 (PCV2) variants PCV2-1 and PCV2-2 in Brazilian pig population. Res Vet Sci 2009; 87:157-60. [DOI: 10.1016/j.rvsc.2008.12.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2008] [Revised: 11/10/2008] [Accepted: 12/02/2008] [Indexed: 11/17/2022]
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Fernandes LT, Barbosa Roselino R, Maia Campos G. [Cervical adaptation of jacket crowns, using different construction technics]. Rev Fac Odontol Ribeiro Preto 1986; 23:123-33. [PMID: 3333683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Fernandes LT, Roselino RB, Maia Campos G. [Effects of glazing temperature on surface texture of porcelain]. Rev Fac Odontol Ribeiro Preto 1984; 21:25-36. [PMID: 6599630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Abstract
The fluorescent characteristics of silicate cements, acrylic resins, and composite resins and all anterior restorative materials have been compared with the natural teeth when specimens were submitted to ultra-violet radiation. The effect of glazes on composite resins and of discolouration from ultra-violet radiation on composites and acrylic resins is to reduce the amount of fluorescence of the former and to change the quality of the fluorescence.
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Fernandes LT, Caldas EM. [Determination of the atmospheric pressure in Ribeirao Preto-1962-1963]. Bl Zahnheilkd 1967; 28:158-72. [PMID: 5238845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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