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Raposo M, Bettencourt C, Melo ARV, Ferreira AF, Alonso I, Silva P, Vasconcelos J, Kay T, Saraiva-Pereira ML, Costa MD, Vilasboas-Campos D, Bettencourt BF, Bruges-Armas J, Houlden H, Heutink P, Jardim LB, Sequeiros J, Maciel P, Lima M. Novel Machado-Joseph disease-modifying genes and pathways identified by whole-exome sequencing. Neurobiol Dis 2021; 162:105578. [PMID: 34871736 DOI: 10.1016/j.nbd.2021.105578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 11/08/2021] [Accepted: 12/02/2021] [Indexed: 11/17/2022] Open
Abstract
Machado-Joseph disease (MJD/SCA3) is a neurodegenerative polyglutamine disorder exhibiting a wide spectrum of phenotypes. The abnormal size of the (CAG)n at ATXN3 explains ~55% of the age at onset variance, suggesting the involvement of other factors, namely genetic modifiers, whose identification remains limited. Our aim was to find novel genetic modifiers, analyse their epistatic effects and identify disease-modifying pathways contributing to MJD variable expressivity. We performed whole-exome sequencing in a discovery sample of four age at onset concordant and four discordant first-degree relative pairs of Azorean patients, to identify candidate variants which genotypes differed for each discordant pair but were shared in each concordant pair. Variants identified by this approach were then tested in an independent multi-origin cohort of 282 MJD patients. Whole-exome sequencing identified 233 candidate variants, from which 82 variants in 53 genes were prioritized for downstream analysis. Eighteen disease-modifying pathways were identified; two of the most enriched pathways were relevant for the nervous system, namely the neuregulin signaling and the agrin interactions at neuromuscular junction. Variants at PARD3, NFKB1, CHD5, ACTG1, CFAP57, DLGAP2, ITGB1, DIDO1 and CERS4 modulate age at onset in MJD, with those identified in CFAP57, ACTG1 and DIDO1 showing consistent effects across cohorts of different geographical origins. Network analyses of the nine novel MJD modifiers highlighted several important molecular interactions, including genes/proteins previously related with MJD pathogenesis, namely between ACTG1/APOE and VCP/ITGB1. We describe novel pathways, modifiers, and their interaction partners, providing a broad molecular portrait of age at onset modulation to be further exploited as new disease-modifying targets for MJD and related diseases.
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Affiliation(s)
- Mafalda Raposo
- Instituto de Biologia Molecular e Celular (IBMC), Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Porto, Portugal; Faculdade de Ciências e Tecnologia, Universidade dos Açores, Ponta Delgada, Portugal.
| | - Conceição Bettencourt
- Department of Neurodegenerative Disease and Queen Square Brain Bank for Neurological Disorders, UCL Queen Square Institute of Neurology, London, UK.
| | - Ana Rosa Vieira Melo
- Instituto de Biologia Molecular e Celular (IBMC), Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Porto, Portugal; Faculdade de Ciências e Tecnologia, Universidade dos Açores, Ponta Delgada, Portugal
| | - Ana F Ferreira
- Instituto de Biologia Molecular e Celular (IBMC), Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Porto, Portugal; Faculdade de Ciências e Tecnologia, Universidade dos Açores, Ponta Delgada, Portugal.
| | - Isabel Alonso
- Instituto de Biologia Molecular e Celular (IBMC), Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Porto, Portugal
| | - Paulo Silva
- Instituto de Biologia Molecular e Celular (IBMC), Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Porto, Portugal.
| | - João Vasconcelos
- Departamento de Neurologia, Hospital do Divino Espírito Santo, Ponta Delgada, Portugal
| | - Teresa Kay
- Departamento de Genética Clínica, Hospital D. Estefânia, Lisboa, Portugal
| | - Maria Luiza Saraiva-Pereira
- Departamento de Bioquímica, Universidade Federal do Rio Grande do Sul, Brazil; Serviço de Genética Médica/Centro de Pesquisa Clínica e Experimental, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil.
| | - Marta D Costa
- Instituto de Investigação em Ciências da Vida e Saúde (ICVS), Escola de Medicina, Universidade do Minho, Braga, Portugal; ICVS/3B's - Laboratório Associado, Braga/Guimarães, Portugal.
| | - Daniela Vilasboas-Campos
- Instituto de Investigação em Ciências da Vida e Saúde (ICVS), Escola de Medicina, Universidade do Minho, Braga, Portugal; ICVS/3B's - Laboratório Associado, Braga/Guimarães, Portugal
| | - Bruno Filipe Bettencourt
- Serviço Especializado de Epidemiologia e Biologia Molecular (SEEBMO), Hospital de Santo Espírito da Ilha Terceira (HSEIT), Angra do Heroísmo, Azores, Portugal
| | - Jácome Bruges-Armas
- Serviço Especializado de Epidemiologia e Biologia Molecular (SEEBMO), Hospital de Santo Espírito da Ilha Terceira (HSEIT), Angra do Heroísmo, Azores, Portugal; CHRC - Comprehensive Health Research Centre, Faculdade de Ciências Médicas & CEDOC - Chronic Diseases Research Center, Universidade Nova de Lisboa, Lisboa, Portugal
| | - Henry Houlden
- Department of Molecular Neuroscience, Institute of Neurology, University College London and Neurogenetics Unit, National Hospital for Neurology and Neurosurgery, University College London Hospitals, London, United Kingdom, London.
| | - Peter Heutink
- German Center for Neurodegenerative Diseases (DZNE), Tübingen, Germany.
| | - Laura Bannach Jardim
- Departamento de Medicina Interna, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil; Serviço de Genética Médica/Centro de Pesquisa Clínica e Experimental, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil.
| | - Jorge Sequeiros
- Instituto de Biologia Molecular e Celular (IBMC), Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Porto, Portugal.
| | - Patrícia Maciel
- Instituto de Investigação em Ciências da Vida e Saúde (ICVS), Escola de Medicina, Universidade do Minho, Braga, Portugal; ICVS/3B's - Laboratório Associado, Braga/Guimarães, Portugal.
| | - Manuela Lima
- Instituto de Biologia Molecular e Celular (IBMC), Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Porto, Portugal; Faculdade de Ciências e Tecnologia, Universidade dos Açores, Ponta Delgada, Portugal.
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Santos MR, Couto AR, Foroni I, Bettencourt BF, Li Z, Meneses R, Wheeler L, Pereira J, Pimentel-Santos F, Fonseca JE, Alves H, Martinho A, Lima M, Brown MA, Bruges-Armas J. Non-classical human leucocyte antigens in ankylosing spondylitis: possible association with HLA-E and HLA-F. RMD Open 2018; 4:e000677. [PMID: 30018800 PMCID: PMC6045739 DOI: 10.1136/rmdopen-2018-000677] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 05/18/2018] [Accepted: 06/10/2018] [Indexed: 01/17/2023] Open
Abstract
OBJECTIVES Ankylosing spondylitis (AS) is the most prevalent form of spondyloarthritis, with a known genetic association with the HLA-B27 molecule. The aim of this study was to assess the contribution of the HLA-G, HLA-E and HLA-F to AS susceptibility/protection in Portuguese patients with HLA-B27 AS and HLA-B27 unaffected controls. METHODS High-resolution typing of HLA-G, HLA-E and HLA-F was performed in 228 patients with HLA-B27 AS and 244 HLA-B27 unaffected controls. Allelic, genotypic and haplotypic frequencies were compared between cohorts. To replicate the results, single nucleotide polymorphisms (SNPs) in HLA-E and HLA-F genes were typed in Australian cohorts. For further confirmation, a group of European-descent patients with AS and unaffected controls were genotyped for Major Histocompatibility Complex SNPs using the Illumina microarray. RESULTS In the Portuguese population, no significant differences were found in HLA-G. For HLA-E, a significant difference was detected for the genotype HLA-E*01:01:01/01:03:01 (p=0.009; pc=0.009; OR=0.51), with a protection effect. For HLA-F, significant differences were detected in the allele HLA-F*01:01:02 (p=0.0049; pc=0.0098; OR=0.60) and corresponding SNP rs2075682 (p=0.0004; pc=0.0008; OR=0.53), suggesting protection and in the genotype HLA-F*01:01:01/01:03:01 (p=0.011; pc=0.043; OR=2.00), suggesting a susceptibility effect. Three G-E-F haplotypes with significant differences were detected but occur in a very small number of individuals. The only significant differences detected in the replication studies were for HLA-E rs1059510 in the Australians and for HLA-F rs1736924 in the European-descent cohorts. CONCLUSION Our results reveal suggestive AS protective and susceptibility effects from both HLA-E and HLA-F loci, however with population differences. To our knowledge, this is the first study showing association of HLA-F with AS.
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Affiliation(s)
- Margarida Rodrigues Santos
- Serviço Especializado de Epidemiologia e Biologia Molecular, Hospital de Santo Espirito da Ilha Terceira, EPER, Angra do Heroismo, Portugal
| | - Ana Rita Couto
- Serviço Especializado de Epidemiologia e Biologia Molecular, Hospital de Santo Espirito da Ilha Terceira, EPER, Angra do Heroismo, Portugal
| | - Iris Foroni
- Serviço Especializado de Epidemiologia e Biologia Molecular, Hospital de Santo Espirito da Ilha Terceira, EPER, Angra do Heroismo, Portugal
| | - Bruno Filipe Bettencourt
- Serviço Especializado de Epidemiologia e Biologia Molecular, Hospital de Santo Espirito da Ilha Terceira, EPER, Angra do Heroismo, Portugal
| | - Zhixiu Li
- Institute of Health and Biomedical Innovation, Translational Research Institute, Queensland University of Technology, Brisbane, Australia
| | - Raquel Meneses
- Serviço Especializado de Epidemiologia e Biologia Molecular, Hospital de Santo Espirito da Ilha Terceira, EPER, Angra do Heroismo, Portugal
| | - Lawrie Wheeler
- Institute of Health and Biomedical Innovation, Translational Research Institute, Queensland University of Technology, Brisbane, Australia
| | - Joaquim Pereira
- Serviço Especializado de Epidemiologia e Biologia Molecular, Hospital de Santo Espirito da Ilha Terceira, EPER, Angra do Heroismo, Portugal
| | | | | | - Helena Alves
- Centro de Histocompatibilidade do Norte, Instituto Português do Sangue e da Transplantação, Porto, Portugal
| | - António Martinho
- Centro de Sangue e Transplantação de Coimbra, Instituto Português do Sangue e da Transplantação, Coimbra, Portugal
| | - Manuela Lima
- Faculdade de Ciências e Tecnologia, Universidade dos Açores, Ponta Delgada, Portugal
| | - Matthew A Brown
- Institute of Health and Biomedical Innovation, Translational Research Institute, Queensland University of Technology, Brisbane, Australia
| | - Jácome Bruges-Armas
- Serviço Especializado de Epidemiologia e Biologia Molecular, Hospital de Santo Espirito da Ilha Terceira, EPER, Angra do Heroismo, Portugal
- CEDOC, Faculdade de Ciências Médicas, Universidade Nova de Lisboa, Lisboa, Portugal
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Melo ARV, Ramos A, Kazachkova N, Raposo M, Bettencourt BF, Rendeiro AR, Kay T, Vasconcelos J, Bruges-Armas J, Lima M. Triplet Repeat Primed PCR (TP-PCR) in Molecular Diagnostic Testing for Spinocerebellar Ataxia Type 3 (SCA3). Mol Diagn Ther 2016; 20:617-622. [DOI: 10.1007/s40291-016-0235-y] [Citation(s) in RCA: 4] [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] [Indexed: 12/17/2022]
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Bettencourt BF, Pinheiro JP, Bruges-Armas J. Killer-cell immunoglobulin-like receptors genotyping of 127 individuals from Terceira Island, Azores, Portugal. Hum Immunol 2016; 77:1113. [PMID: 27503788 DOI: 10.1016/j.humimm.2016.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 08/03/2016] [Accepted: 08/04/2016] [Indexed: 11/25/2022]
Abstract
One hundred and twenty-seven unrelated Azorean individuals were randomly selected to study the gene frequencies of Killer-cell immunoglobulin-like receptors (KIR) in the Azorean (Terceira) population. KIR genotyping was performed by polymerase chain reaction using commercial sequence-specific oligonucleotide probe kits. All loci were in HWE, showing no locus-level deviations. The genotype data is available in the Allele Frequencies Net Database under the population name "Azores Terceira Island KIR".
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Affiliation(s)
- Bruno Filipe Bettencourt
- SEEBMO, Hospital de Santo Espirito da ilha Terceira, Angra do Heroísmo, Portugal; Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Portugal; Genetics & Arthritis Research Group (GARG), IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal.
| | - João Paulo Pinheiro
- SEEBMO, Hospital de Santo Espirito da ilha Terceira, Angra do Heroísmo, Portugal; Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Portugal; Genetics & Arthritis Research Group (GARG), IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | - Jácome Bruges-Armas
- SEEBMO, Hospital de Santo Espirito da ilha Terceira, Angra do Heroísmo, Portugal; Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Portugal; Genetics & Arthritis Research Group (GARG), IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
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Bettencourt BF, Santos MR, Pereira J, Amaro B, Fialho R, Meneses R, Couto AR, Bruges Armas J. HLA-A, -B, -C, -DQA1, -DQB1, -DRB1, -E, -F and -G genotyping of 130 individuals from Terceira Island, Azores, Portugal. Hum Immunol 2016; 77:445-6. [PMID: 27041245 DOI: 10.1016/j.humimm.2016.03.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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] [Received: 02/25/2016] [Revised: 03/24/2016] [Accepted: 03/30/2016] [Indexed: 11/16/2022]
Abstract
One hundred and thirty unrelated Azorean individuals were randomly selected to study the frequencies of high-resolution HLA alleles and haplotypes in the Azorean (Terceira) population. HLA-A, -B, -Cw, -DRB1, -DQA1 and -DQB1 high-resolution genotyping was performed by polymerase chain reaction using commercial kits. HLA-E, -F and -G alleles, were genotyped by sequence-based typing. All loci were in HWE, showing no locus-level deviations. The genotype data is available in the Allele Frequencies Net Database under the population name "Azores Terceira Island" and the identifier (AFND112579).
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Affiliation(s)
- Bruno Filipe Bettencourt
- SEEBMO, Hospital de Santo Espirito da ilha Terceira, Angra do Heroísmo, Portugal; Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Portugal; Genetics & Arthritis Research Group (GARG), c IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal.
| | - Margarida Rodrigues Santos
- SEEBMO, Hospital de Santo Espirito da ilha Terceira, Angra do Heroísmo, Portugal; Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Portugal; Genetics & Arthritis Research Group (GARG), c IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | - Joaquim Pereira
- SEEBMO, Hospital de Santo Espirito da ilha Terceira, Angra do Heroísmo, Portugal
| | - Bruna Amaro
- SEEBMO, Hospital de Santo Espirito da ilha Terceira, Angra do Heroísmo, Portugal; Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Portugal; Genetics & Arthritis Research Group (GARG), c IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | - Raquel Fialho
- SEEBMO, Hospital de Santo Espirito da ilha Terceira, Angra do Heroísmo, Portugal
| | - Raquel Meneses
- SEEBMO, Hospital de Santo Espirito da ilha Terceira, Angra do Heroísmo, Portugal; Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Portugal; Genetics & Arthritis Research Group (GARG), c IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | - Ana Rita Couto
- SEEBMO, Hospital de Santo Espirito da ilha Terceira, Angra do Heroísmo, Portugal; Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Portugal; Genetics & Arthritis Research Group (GARG), c IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | - Jácome Bruges Armas
- SEEBMO, Hospital de Santo Espirito da ilha Terceira, Angra do Heroísmo, Portugal; Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Portugal; Genetics & Arthritis Research Group (GARG), c IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
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Ramos A, Raposo M, Milà M, Bettencourt C, Houlden H, Cisneros B, Magaña JJ, Bettencourt BF, Bruges-Armas J, Santos C, Lima M. Verification of Inter-laboratorial Genotyping Consistency in the Molecular Diagnosis of Polyglutamine Spinocerebellar Ataxias. J Mol Neurosci 2015; 58:83-7. [PMID: 26454745 DOI: 10.1007/s12031-015-0646-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 08/24/2015] [Indexed: 10/22/2022]
Abstract
The polyglutamine spinocerebellar ataxias (SCAs) constitute a clinically and genetically heterogeneous group of rare late-onset neurodegenerative disorders, caused by CAG expansions in the coding region of the respective genes. Given their considerable clinical overlapping, differential diagnosis relies on molecular testing. Laboratory best practice guidelines for molecular genetic testing of the SCAs were released in 2010 by the European Molecular Genetics Quality Network, following the recognition of gross genotyping errors by some diagnostic laboratories. The main goal of this study was to verify the existence of inter-laboratorial consistency comparing genotypes for SCA1, SCA2, SCA3, SCA6 and SCA7 obtained by independent diagnostic laboratories. The individual impact of different methodological issues on the genotype for the several SCAs was also analysed. Four international collaborative diagnostic laboratories provided 79 samples and the respective SCA genotypes. Samples were genotyped in-house for all SCAs using an independent methodology; comparison of the allele size obtained with the one provided by the collaborative laboratories was performed. Globally, no significant differences were identified, a result which could be reflecting the fulfilment of recommendations for the molecular testing of SCAs and demonstrating an improvement in genotyping accuracy.
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Affiliation(s)
- Amanda Ramos
- Department of Biology/CIRN, University of the Azores, Rua da Mãe de Deus - Apartado 1422, 9501-801, Ponta Delgada, Azores, Portugal. .,Institute for Molecular and Cell Biology (IBMC), University of Porto, Porto, Portugal. .,Instituto de Investigação e Inovação em Saúde, University of Porto, Porto, Portugal.
| | - Mafalda Raposo
- Department of Biology/CIRN, University of the Azores, Rua da Mãe de Deus - Apartado 1422, 9501-801, Ponta Delgada, Azores, Portugal.,Institute for Molecular and Cell Biology (IBMC), University of Porto, Porto, Portugal.,Instituto de Investigação e Inovação em Saúde, University of Porto, Porto, Portugal
| | - Montserrat Milà
- Department of Biochemistry and Molecular Genetics, Hospital Clínic and IDIBAPS, Barcelona, Spain
| | | | - Henry Houlden
- Department of Molecular Neuroscience, UCL Institute of Neurology, London, England
| | - Bulmaro Cisneros
- Department of Genetics and Molecular Biology, Center of Research and Advanced Studies (CINVESTAV-IPN), Mexico City, Mexico
| | - Jonathan J Magaña
- Laboratory of Genomic Medicine, Department of Genetics, National Rehabilitation Institute (INR), Mexico City, Mexico
| | - Bruno Filipe Bettencourt
- Institute for Molecular and Cell Biology (IBMC), University of Porto, Porto, Portugal.,Instituto de Investigação e Inovação em Saúde, University of Porto, Porto, Portugal.,Hospital de Santo Espírito da Ilha Terceira, SEEBMO, Angra do Heroísmo, Portugal
| | - Jácome Bruges-Armas
- Institute for Molecular and Cell Biology (IBMC), University of Porto, Porto, Portugal.,Instituto de Investigação e Inovação em Saúde, University of Porto, Porto, Portugal.,Hospital de Santo Espírito da Ilha Terceira, SEEBMO, Angra do Heroísmo, Portugal
| | - Cristina Santos
- Unitat d'Antropologia Biològica, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
| | - Manuela Lima
- Department of Biology/CIRN, University of the Azores, Rua da Mãe de Deus - Apartado 1422, 9501-801, Ponta Delgada, Azores, Portugal.,Institute for Molecular and Cell Biology (IBMC), University of Porto, Porto, Portugal.,Instituto de Investigação e Inovação em Saúde, University of Porto, Porto, Portugal
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Fialho RN, Martins L, Pinheiro JP, Bettencourt BF, Couto AR, Santos MR, Peixoto MJ, Garrett F, Leal J, Tomás AM, Bruges-Armas J. Role of human leukocyte antigen, killer-cell immunoglobulin-like receptors, and cytokine gene polymorphisms in leptospirosis. Hum Immunol 2009; 70:915-20. [DOI: 10.1016/j.humimm.2009.08.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2008] [Revised: 07/27/2009] [Accepted: 08/10/2009] [Indexed: 02/05/2023]
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Bruges-Armas J, Couto AR, Timms A, Santos MR, Bettencourt BF, Peixoto MJ, Colquhoun K, McNally EG, Carneiro V, Herrero-Beaumont G, Brown MA. Ectopic calcification among families in the Azores: clinical and radiologic manifestations in families with diffuse idiopathic skeletal hyperostosis and chondrocalcinosis. ACTA ACUST UNITED AC 2006; 54:1340-9. [PMID: 16575860 DOI: 10.1002/art.21727] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE Twelve families that were multiply affected with diffuse idiopathic skeletal hyperostosis (DISH) and/or chondrocalcinosis, were identified on the island of Terceira, The Azores, potentially supporting the hypothesis that the 2 disorders share common etiopathogenic factors. The present study was undertaken to investigate this hypothesis. METHODS One hundred three individuals from 12 unrelated families were assessed. Probands were identified from patients attending the Rheumatic Diseases Clinic, Hospital de Santo Espírito, in The Azores. Family members were assessed by rheumatologists and radiologists. Radiographs of all family members were obtained, including radiographs of the dorsolumbar spine, pelvis, knees, elbows, and wrists, and all cases were screened for known features of chondrocalcinosis. RESULTS Ectopic calcifications were identified in 70 patients. The most frequent symptoms or findings were as follows: axial pain, elbow, knee and metacarpophalangeal (MCP) joint pain, swelling, and/or deformity, and radiographic enthesopathic changes. Elbow and MCP joint periarticular calcifications were observed in 35 and 5 patients, respectively, and chondrocalcinosis was identified in 12 patients. Fifteen patients had sacroiliac disease (ankylosis or sclerosis) on computed tomography scans. Fifty-two patients could be classified as having definite (17%), probable (26%), or possible (31%) DISH. Concomitant DISH and chondrocalcinosis was diagnosed in 12 patients. Pyrophosphate crystals were identified from knee effusions in 13 patients. The pattern of disease transmission was compatible with an autosomal-dominant monogenic disease. The mean age at which symptoms developed was 38 years. CONCLUSION These families may represent a familial type of pyrophosphate arthropathy with a phenotype that includes peripheral and axial enthesopathic calcifications. The concurrence of DISH and chondrocalcinosis suggests a shared pathogenic mechanism in the 2 conditions.
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