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Schober T, Magg T, Laschinger M, Rohlfs M, Linhares ND, Puchalka J, Weisser T, Fehlner K, Mautner J, Walz C, Hussein K, Jaeger G, Kammer B, Schmid I, Bahia M, Pena SD, Behrends U, Belohradsky BH, Klein C, Hauck F. A human immunodeficiency syndrome caused by mutations in CARMIL2. Nat Commun 2017; 8:14209. [PMID: 28112205 PMCID: PMC5473639 DOI: 10.1038/ncomms14209] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [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: 04/18/2016] [Accepted: 11/17/2016] [Indexed: 12/22/2022] Open
Abstract
Human T-cell function is dependent on T-cell antigen receptor (TCR) and co-signalling as evidenced by immunodeficiencies affecting TCR-dependent signalling pathways. Here, we show four human patients with EBV+ disseminated smooth muscle tumours that carry two homozygous loss-of-function mutations in the CARMIL2 (RLTPR) gene encoding the capping protein regulator and myosin 1 linker 2. These patients lack regulatory T cells without evidence of organ-specific autoimmunity, and have defective CD28 co-signalling associated with impaired T-cell activation, differentiation and function, as well as perturbed cytoskeletal organization associated with T-cell polarity and migration disorders. Human CARMIL2-deficiency is therefore an autosomal recessive primary immunodeficiency disorder associated with defective CD28-mediated TCR co-signalling and impaired cytoskeletal dynamics. CARMIL2 (Rltpr) is involved in T-cell function. Here, the authors identify human CARMIL2-deficiency as an autosomal recessive primary immunodeficiency disorder characterized by EBV+ smooth muscle tumours, CD28 co-signalling deficiency and impaired cytoskeletal dynamics.
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Affiliation(s)
- T Schober
- Dr. von Hauner Children's Hospital, Ludwig-Maximilians-Universität (LMU), Lindwurmstrasse 4, D-80337 Munich, Germany
| | - T Magg
- Dr. von Hauner Children's Hospital, Ludwig-Maximilians-Universität (LMU), Lindwurmstrasse 4, D-80337 Munich, Germany
| | - M Laschinger
- Department of Surgery, Technische Universität München (TUM), Ismaninger Strasse 22, D-81675 Munich, Germany
| | - M Rohlfs
- Dr. von Hauner Children's Hospital, Ludwig-Maximilians-Universität (LMU), Lindwurmstrasse 4, D-80337 Munich, Germany
| | - N D Linhares
- Laboratory of Clinical Genomics, Federal University of Minas Gerais, 190 Professor Alfredo Balena Avenida, Belo Horizonte 30130-100, Brazil
| | - J Puchalka
- Dr. von Hauner Children's Hospital, Ludwig-Maximilians-Universität (LMU), Lindwurmstrasse 4, D-80337 Munich, Germany
| | - T Weisser
- Department of Surgery, Technische Universität München (TUM), Ismaninger Strasse 22, D-81675 Munich, Germany
| | - K Fehlner
- Department of Surgery, Technische Universität München (TUM), Ismaninger Strasse 22, D-81675 Munich, Germany
| | - J Mautner
- Research Unit Gene Vectors, Helmholtz Zentrum München (HMGU)-German Research Center for Environmental Health, Marchioninistrasse 25, D-81377 Munich, Germany.,Children's Hospital, Technische Universität München (TUM), Munich D-80804, Germany.,German Centre for Infection Research (DZIF), Trogerstrasse 30, D-81675 Munich, Germany
| | - C Walz
- Institute of Pathology, Ludwig-Maximilians-Universität (LMU), Thalkirchner Strasse 36, D-80337 Munich, Germany
| | - K Hussein
- Institute of Pathology, Hannover Medical School (MHH), Carl-Neuberg-Strasse 1, D-30625 Hanover, Germany
| | - G Jaeger
- Department of Diagnostic Virology, Max von Pettenkofer-Institute, Ludwig-Maximilians-Universität (LMU), Pettenkoferstrasse 9a, D-80336 Munich, Germany
| | - B Kammer
- Dr. von Hauner Children's Hospital, Ludwig-Maximilians-Universität (LMU), Lindwurmstrasse 4, D-80337 Munich, Germany
| | - I Schmid
- Dr. von Hauner Children's Hospital, Ludwig-Maximilians-Universität (LMU), Lindwurmstrasse 4, D-80337 Munich, Germany
| | - M Bahia
- Department of Pediatric Gastroenterology, Federal University of Minas Gerais, 110 Prof. Alfredo Balena Avenida, Belo Horizonte 30130-100, Brazil
| | - S D Pena
- Laboratory of Clinical Genomics, Federal University of Minas Gerais, 190 Professor Alfredo Balena Avenida, Belo Horizonte 30130-100, Brazil
| | - U Behrends
- Research Unit Gene Vectors, Helmholtz Zentrum München (HMGU)-German Research Center for Environmental Health, Marchioninistrasse 25, D-81377 Munich, Germany.,Children's Hospital, Technische Universität München (TUM), Munich D-80804, Germany.,German Centre for Infection Research (DZIF), Trogerstrasse 30, D-81675 Munich, Germany
| | - B H Belohradsky
- Dr. von Hauner Children's Hospital, Ludwig-Maximilians-Universität (LMU), Lindwurmstrasse 4, D-80337 Munich, Germany
| | - C Klein
- Dr. von Hauner Children's Hospital, Ludwig-Maximilians-Universität (LMU), Lindwurmstrasse 4, D-80337 Munich, Germany.,German Centre for Infection Research (DZIF), Trogerstrasse 30, D-81675 Munich, Germany
| | - F Hauck
- Dr. von Hauner Children's Hospital, Ludwig-Maximilians-Universität (LMU), Lindwurmstrasse 4, D-80337 Munich, Germany.,German Centre for Infection Research (DZIF), Trogerstrasse 30, D-81675 Munich, Germany
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Linhares ND, Freire MCM, Cardenas RGCCL, Bahia M, Puzenat E, Aubin F, Pena SDJ. Modulation of expressivity in PDGFRB-related infantile myofibromatosis: a role for PTPRG? Genet Mol Res 2014; 13:6287-92. [PMID: 25158255 DOI: 10.4238/2014.august.15.11] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Infantile myofibromatosis is a rare genetic disorder characterized by the development of benign tumors in the skin, muscle, bone, and viscera. The molecular pathogenesis is still incompletely known. An autosomal dominant form had been reported as causally related with mutations in the gene for platelet-derived growth factor receptor beta (PDGFRB). We report here two siblings with infantile myofibromatosis and with a PDGFRB mutation identified by exome sequence analysis. However, the unaffected mother also had the same PDGFRB mutation. We showed that both children had also inherited from their healthy father a heterozygous mutation in the gene for receptor protein tyrosine phosphatase gamma (PTPRG), an enzyme known to dephosphorylate PDGFRB. We suggest that in this family, the additional mutation in PTPRG may explain the full phenotypic penetrance in the siblings affected, in comparison with the unaffected mother.
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Affiliation(s)
- N D Linhares
- Laboratório de Genômica Clínica, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - M C M Freire
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - R G C C L Cardenas
- Laboratório de Genômica Clínica, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - M Bahia
- Divisão de Gastroenterologia Pediátrica, Hospital das Clínicas da Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - E Puzenat
- Service de Dermatologie, Centre Hospitalier Universitaire, Université de Franche Comté, Besançon, France
| | - F Aubin
- Service de Dermatologie, Centre Hospitalier Universitaire, Université de Franche Comté, Besançon, France
| | - S D J Pena
- Laboratório de Genômica Clínica, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
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Scofield A, Bahia M, Martins AL, Góes-Cavalcante G, Martins TF, Labruna MB. Amblyomma dissimile Koch (Acari: Ixodidae) attacking Primolius maracana Vieillot (Psittaciformes: Psittacidae) in the Amazon region, State of Pará, Brazil. Neotrop Entomol 2011; 40:509-511. [PMID: 21952971 DOI: 10.1590/s1519-566x2011000400017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2010] [Accepted: 01/31/2011] [Indexed: 05/31/2023]
Abstract
The tick Amblyomma dissimile Koch feeds preferentially on reptiles (Squamata), although amphibians (Anura) also seem to be important hosts. We report an A. dissimile nymph infesting a blue-winged macaw, Primolius maracana, held in captivity in the Mangal das Garças Park, State of Pará, Brazil. Environmental observations suggest that free-living iguanas (Iguana iguana), which used to walk on the bird enclosure in the park, were the source of the A. dissimile tick that infested the blue-winged macaw. We provide the second world record of a bird host for A. dissimile, and the first bird record for this species in South America.
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Affiliation(s)
- A Scofield
- Faculdade de Medicina Veterinária, Universidade Federal do Pará, Castanhal, PA, Brasil
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Bahia M, Rabello A, Brasileiro Filho G, Penna FJ. Serum antigliadin antibody levels as a screening criterion before jejunal biopsy indication for celiac disease in a developing country. Braz J Med Biol Res 2001; 34:1415-20. [PMID: 11668350 DOI: 10.1590/s0100-879x2001001100007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [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: 12/20/2022] Open
Abstract
The objective of the present study was to determine the efficacy of detection of antigliadin immunoglobulins G and A (IgG and IgA) for the diagnosis of celiac disease in a developing country, since other enteropathies might alter the levels of these antibodies. Three groups were studied: 22 patients with celiac disease (mean age: 30.6 months), 61 patients with other enteropathies (mean age: 43.3 months), and 46 patients without enteropathies (mean age: 96.9 months). Antigliadin IgG and IgA ELISA showed sensitivity of 90.9 and 95.5%, respectively. With the hypothetical values of prevalence ranging from 1:500 to 1:2000 liveborns, the positive predictive value varied from 8.5 to 2.3% for IgG and from 4.8 to 1.1% for IgA. Considering the patients without enteropathies, specificity was 97.8 and 95.7% for IgG and IgA, respectively. In patients with other enteropathies, specificity was 82.0 and 84.1%, respectively. When patients with and without other enteropathies were considered as a whole, specificity was 88.8 and 91.6%, respectively. The specificity of positive IgG or IgA was 93.5% in children without enteropathies and 78.7% in the presence of other enteropathies. The negative predictive value for hypothetical prevalences varying from 1:500 to 1:2000 liveborns was 99.9%. Thus, even in developing countries where the prevalence of non-celiac enteropathies is high, the determination of serum antigliadin antibody levels is a useful screening test prior to the jejunal biopsy in the investigation of intestinal malabsorption.
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Affiliation(s)
- M Bahia
- Serviço de Gastroenterologia Pediátrica, Departamento de Pediatria, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Alfredo Balena, 190, 6o andar, Belo Horizonte, MG, Brazil.
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Abstract
Gynecomastia is an anomaly associated with alterations in the levels of hormones, especially estrogens. Sufferers of gynecomastia present a high risk of developing carcinomas. Only two cytogenetic descriptions of this type of mammary proliferation are available. In the present study, we analyzed chromosomally a sample of breast tissue from a patient with gynecomastia following short-term culture. The only clonal chromosomal alteration encountered was trisomy of chromosome 4. This alteration has not been described previously for samples of gynecomastia or breast cancer in males. We believe that the alterations in hormone levels in the male breast tissue that lead to this type of cellular proliferation induce the formation of chromosomal abnormalities, making the cells more susceptible to becoming malignant.
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Affiliation(s)
- R R Burbano
- Departamento de Genética, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão, Brazil
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Oliveira MC, Reis FJ, Chagas AJ, Brasileiro Filho G, Bahia M, Silva LD, Penna FJ. [Study of intestinal malabsorption diseases as cause of monosymptomatic short stature]. J Pediatr (Rio J) 1998; 74:213-6. [PMID: 14685622 DOI: 10.2223/jped.435] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
OBJECTIVE: This study was carried out in order to evaluate the etiology of monosymptomatic childhood short stature (below the third percentile or with growth rate of less than 5 cm/year) with emphasis on causes due to intestinal malabsorption. METHODS: Each patient was submitted to endocrinological, biochemical and hematological investigation. Determination of serum anti-gliadin antibodies, fecal fat, chloride levels in sweat, jejunal biopsy and bone age was also obtained.RESULTS: A total of 51 children was studied, most of them belonging to the group of normal variants. Four children had abnormally high sweat chloride, compatible with the diagnosis of cystic fibrosis. These children were asymptomatic regarding respiratory and gastrointestinal tract. CONCLUSIONS: We conclude that cystic fibrosis, besides celiac disease, must be included in the differential diagnosis of short stature in childhood.
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Affiliation(s)
- M C Oliveira
- Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
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