Publications (37)288.23 Total impact
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Article: Autoimmune polyendocrine syndrome type 1: an extensive longitudinal study in Sardinian patients.
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ABSTRACT: Autoimmune polyendocrine syndrome type 1 (APS1) is a childhood-onset monogenic disorder caused by mutations in the autoimmune regulator (AIRE) gene, including the distinctive R139X in Sardinia. Its rarity and great variability in manifestations/onset ages make early diagnosis difficult. To date, very few longitudinal studies of APS1 patients have been reported. The aim of this study was to describe the features and clinical course of APS1 and correlate them with AIRE and HLA class II genotypes in a large homogeneous cohort of Sardinian patients followed for up to 25 yr. Twenty-two pediatric APS1 patients were studied prospectively. This Sardinian series (female/male ratio, 1.44; median current age, 30.7 yr; range, 1.8-46 yr) showed early disease onset (age range, 0.3-10 yr; median, 3.5 yr) and severe phenotype (on average, seven manifestations per patient). Besides the classic triad of chronic mucocutaneous candidiasis, hypoparathyroidism, and Addison's disease, autoimmune hepatitis was a serious and surprisingly common/early/presenting feature (27%; two deaths), with a 5:1 female bias (median age, 6 yr; range, 2.5-11 yr). By contrast, type 1 diabetes was rare (one patient), and hypothyroidism was not seen. Additional disease components (several of them potentially life-threatening) appeared in adulthood. The major nonsense mutation, R139X, was found in 93% of the mutant AIRE alleles. High-titer interferon (IFN)-ω and IFN-α autoantibodies were detected in all patients tested, even preclinically at 4 months of age in one sibling. HLA alleles appear to influence the exact phenotype-the most interesting apparent association being between HLA-DRB1*0301-DQB1*0201, liver-kidney microsome autoantibodies (anti-CYP1A2), and autoimmune hepatitis. APS1 in Sardinia is characterized by severe phenotype, marked clinical heterogeneity, and relative genetic homogeneity. The single AIRE mutation, R139X, and the anti-IFN-ω and IFN-α autoantibodies are helpful for earlier diagnosis, especially when APS1 presents unusually. HLA genotypes can modify the phenotype.The Journal of clinical endocrinology and metabolism 02/2012; 97(4):1114-24. · 6.50 Impact Factor -
Article: Radioligand-binding assay reveals distinct autoantibody preferences for type I interferons in APS I and myasthenia gravis subgroups.
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ABSTRACT: Patients with autoimmune polyendocrine syndrome type I (APS I) or acquired thymoma-associated myasthenia gravis (MG) surprisingly share several common features, including defective expression of the transcription factor AIRE and autoantibodies against type I interferons. Here, we have adapted and validated the radioligand-binding assay we recently developed against (35)S-Met-interferon-ω, for rapid and specific screening for autoantibodies against interferons-α2 and -α8. We then investigated their potential for diagnosis and for predicting clinical manifestations in patients with APS I and different subgroups of MG. Autoantibodies against interferons-ω, -α2, and -α8 occurred more often in patients with APS I (100%) and MG with thymoma (73%) than in late-onset MG (39%) and early-onset MG (5%). These autoantibodies showed preferences for interferon-ω in APS I and for the interferon-αs in MG, hinting at thymic aberrations in both groups. The exact profile of type I interferon antibodies may indicate MG subtype and may hint at thymoma recurrence.Journal of Clinical Immunology 11/2011; 32(2):230-7. · 3.08 Impact Factor -
Article: Mucocutaneous candidiasis and autoimmunity against cytokines in APECED and thymoma patients: clinical and pathogenetic implications.
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ABSTRACT: Much has been learnt about the mechanisms of thymic self-tolerance induction from work on both the rare autosomal recessive disease autoimmune polyendocrinopathy candidiasis ectodermal dystrophy (APECED) and the autoimmune regulator (AIRE) protein mutated in this disease. Normally, AIRE drives low-level expression of huge numbers of peripheral tissue-specific antigens (TSAgs) in medullary thymic epithelial cells (mTECs), leading to the deletion of TSAg-reactive thymocytes maturing nearby. The very recently discovered neutralizing autoantibodies (autoAbs) against Th17-related cells and cytokines in two autoimmunity-related syndromes associated with AIRE-mutant thymi or AIRE-deficient thymomas help to explain the chronic mucocutaneous candidiasis (CMC) seen in both syndromes. The surprising parallels between these syndromes also demand new hypotheses and research into the consequences of AIRE deficiency and the ensuing autoimmunizing pathways, and suggest more appropriate treatment regimens as discussed in this review.European Journal of Immunology 06/2011; 41(6):1517-27. · 5.10 Impact Factor -
Article: Clinical Dutch-English Lambert-Eaton Myasthenic syndrome (LEMS) tumor association prediction score accurately predicts small-cell lung cancer in the LEMS.
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ABSTRACT: Approximately one half of patients with Lambert-Eaton myasthenic syndrome (LEMS) have small-cell lung carcinomas (SCLC), aggressive tumors with poor prognosis. In view of its profound impact on therapy and survival, we developed and validated a score to identify the presence of SCLC early in the course of LEMS. We derived a prediction score for SCLC in LEMS in a nationwide cohort of 107 Dutch patients, and validated it in a similar cohort of 112 British patients. A Dutch-English LEMS Tumor Association Prediction (DELTA-P) score was developed based on multivariate logistic regression. Age at onset, smoking behavior, weight loss, Karnofsky performance status, bulbar involvement, male sexual impotence, and the presence of Sry-like high-mobility group box protein 1 serum antibodies were independent predictors for SCLC in LEMS. A DELTA-P score was derived allocating 1 point for the presence of each of the following items at or within 3 months from onset: age at onset ≥ 50 years, smoking at diagnosis, weight loss ≥ 5%, bulbar involvement, erectile dysfunction, and Karnofsky performance status lower than 70. The area under the curve of the receiver operating curve was 94.4% in the derivation cohort and 94.6% in the validation set. A DELTA-P score of 0 or 1 corresponded to a 0% to 2.6% chance of SCLC, whereas scores of 4, 5, and 6 corresponded to chances of SCLC of 93.5%, 96.6%, and 100%, respectively. The simple clinical DELTA-P score discriminated patients with LEMS with and without SCLC with high accuracy early in the course of LEMS.Journal of Clinical Oncology 01/2011; 29(7):902-8. · 18.37 Impact Factor -
Article: The autoimmune regulator AIRE in thymoma biology: autoimmunity and beyond.
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ABSTRACT: Thymomas are tumors of thymic epithelial cells. They associate more often than any other human tumors with various autoimmune diseases; myasthenia gravis is the commonest, occurring in 10-50% of thymoma patients, depending on the World Health Organization-defined histologic subtype. Most thymomas generate many polyclonal maturing T lymphocytes but in disorganized microenvironments Failure to induce self-tolerance may be a key factor leading to the export of potentially autoreactive CD4 progeny, thus predisposing to autoimmune diseases. Normally, the master Autoimmune Regulator promotes expression of peripheral tissue-restricted antigens such as insulin by medullary thymic epithelial cells and induction of tolerance to them. The failure of approximately 95% of thymomas to express autoimmune regulator is another feature potentially contributing to autoimmunity.Journal of thoracic oncology: official publication of the International Association for the Study of Lung Cancer 10/2010; 5(10 Suppl 4):S266-72. · 4.55 Impact Factor -
Article: Chronic mucocutaneous candidiasis in APECED or thymoma patients correlates with autoimmunity to Th17-associated cytokines.
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ABSTRACT: Chronic mucocutaneous candidiasis (CMC) is frequently associated with T cell immunodeficiencies. Specifically, the proinflammatory IL-17A-producing Th17 subset is implicated in protection against fungi at epithelial surfaces. In autoimmune polyendocrinopathy candidiasis ectodermal dystrophy (APECED, or autoimmune polyendocrine syndrome 1), CMC is often the first sign, but the underlying immunodeficiency is a long-standing puzzle. In contrast, the subsequent endocrine features are clearly autoimmune, resulting from defects in thymic self-tolerance induction caused by mutations in the autoimmune regulator (AIRE). We report severely reduced IL-17F and IL-22 responses to both Candida albicans antigens and polyclonal stimulation in APECED patients with CMC. Surprisingly, these reductions are strongly associated with neutralizing autoantibodies to IL-17F and IL-22, whereas responses were normal and autoantibodies infrequent in APECED patients without CMC. Our multicenter survey revealed neutralizing autoantibodies against IL-17A (41%), IL-17F (75%), and/ or IL-22 (91%) in >150 APECED patients, especially those with CMC. We independently found autoantibodies against these Th17-produced cytokines in rare thymoma patients with CMC. The autoantibodies preceded the CMC in all informative cases. We conclude that IL-22 and IL-17F are key natural defenders against CMC and that the immunodeficiency underlying CMC in both patient groups has an autoimmune basis.Journal of Experimental Medicine 02/2010; 207(2):299-308. · 13.85 Impact Factor -
Article: The legacy of John Newsom-Davis (1932-2007).
Journal of Neuroimmunology 10/2008; 201-202:1. · 2.96 Impact Factor -
Article: The ageing and myasthenic thymus: a morphometric study validating a standard procedure in the histological workup of thymic specimens.
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ABSTRACT: The thymus is believed to play an important role in the pathogenesis of myasthenia gravis (MG). The 80% of MG patients with anti-acetylcholine receptor autoantibodies fall into three clinical subgroups: 1) thymoma; 2) early-onset MG (<age of 40; EOMG) and 3) late-onset (LOMG; onset after 40). Thymectomy is widely used in EOMG, but its benefits have not been established in randomized controlled trials. A multicenter international trial (MGTX) currently seeks to determine whether thymectomy reduces corticosteroid requirements, and to look for correlations with thymic histology. We here describe the validated, standardized histological workup and reporting system used in this trial.Journal of Neuroimmunology 09/2008; 201-202:64-73. · 2.96 Impact Factor -
Article: The myasthenia gravis thymus: a rare source of human autoantibody-secreting plasma cells for testing potential therapeutics.
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ABSTRACT: In early-onset myasthenia gravis (EOMG), the thymus is colonized by lymph node-like infiltrates including T cell areas and germinal centers. Our Group(1) showed (1978) spontaneous anti-acetylcholine receptor (AChR) autoantibody production by EOMG thymic cells. Especially after enzymic dispersal, these are enriched in plasma cells that are evidently autonomous, long-lived, terminally differentiated and radio-resistant. Radiolabeled AChR is highly sensitive both for localizing them in situ and detecting their ongoing antibody production in culture at limiting cell numbers. Thus EOMG thymi are a readily available source of specific autoimmune human plasma cells suitable for studying their biology and testing new therapies.Journal of Neuroimmunology 09/2008; 201-202:50-6. · 2.96 Impact Factor -
Article: Autoantibodies against type I interferons as an additional diagnostic criterion for autoimmune polyendocrine syndrome type I.
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ABSTRACT: In autoimmune polyendocrinopathy syndrome type I (APS-I), mutations in the autoimmune regulator gene (AIRE) impair thymic self-tolerance induction in developing T cells. The ensuing autoimmunity particularly targets ectodermal and endocrine tissues, but chronic candidiasis usually comes first. We recently reported apparently APS-I-specific high-titer neutralizing autoantibodies against type I interferons in 100% of Finnish and Norwegian patients, mainly with two prevalent AIRE truncations. Because variability in clinical features and age at onset in APS-I frequently results in unusual presentations, we prospectively checked the diagnostic potential of anti-interferon antibodies in additional APS-I panels with other truncations or rare missense mutations and in disease controls with chronic mucocutaneous candidiasis (CMC) but without either common AIRE mutation. The study was designed to detect autoantibodies against interferon-alpha2 and interferon-omega in antiviral neutralization assays. Patients included 14 British/Irish, 15 Sardinian, and 10 Southern Italian AIRE-mutant patients with APS-I; also 19 other patients with CMC, including four families with cosegregating thyroid autoimmunity. The diagnostic value of anti-interferon autoantibodies was assessed. We found antibodies against interferon-alpha2 and/or interferon-omega in all 39 APS-I patients vs. zero of 48 unaffected relatives and zero of 19 British/Irish CMC patients. Especially against interferon-omega, titers were nearly always high, regardless of the exact APS-I phenotype/duration or AIRE genotype, including 12 different AIRE length variants or 10 point substitutions overall (n=174 total). Strikingly, in one family with few typical APS-I features, these antibodies cosegregated over three generations with autoimmune hypothyroidism plus a dominant-negative G228W AIRE substitution. Otherwise restricted to patients with thymoma and/or myasthenia gravis, these precocious persistent antibodies show 98% or higher sensitivity and APS-I specificity and are thus a simpler diagnostic option than detecting AIRE mutations.Journal of Clinical Endocrinology & Metabolism 08/2008; 93(11):4389-97. · 6.50 Impact Factor -
Article: Interferon autoantibodies associated with AIRE deficiency decrease the expression of IFN-stimulated genes.
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ABSTRACT: Neutralizing autoantibodies to type I, but not type II, interferons (IFNs) are found at high titers in almost every patient with autoimmune polyendocrinopathy candidiasis ectodermal dystrophy (APECED), a disease caused by AIRE gene mutations that lead to defects in thymic T-cell selection. Combining genome-wide expression array with real time RT-PCR assays, we here demonstrate that antibodies against IFN-alpha cause highly significant down-regulation of interferon-stimulated gene expression in cells from APECED patients' blood by blocking their highly dilute endogenous IFNs. This down-regulation was lost progressively as these APECED cells matured in cultures without neutralizing autoantibodies. Most interestingly, a rare APECED patient with autoantibodies to IFN-omega but not IFN-alpha showed a marked increase in expression of the same interferon-stimulated genes. We also report unexpected increases in serum CXCL10 levels in APECED. Our results argue that the breakdown of tolerance to IFNs in AIRE deficiency is associated with impaired responses to them in thymus, and highlight APECED as another autoimmune disease with associated dysregulation of IFN activity.Blood 08/2008; 112(7):2657-66. · 9.90 Impact Factor -
Article: Myasthenia gravis seronegative for acetylcholine receptor antibodies.
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ABSTRACT: Antibodies to muscle-specific kinase (MuSK) are found in a variable proportion of patients with myasthenia without typical acetylcholine receptor (AChR) antibodies, but their characteristics and pathogenic mechanisms are not fully understood. We discuss the incidence and pathogenicity of MuSK antibodies and how clinical studies, animal models, and cultured cell lines can be used to elucidate their pathogenic mechanisms. Patients without either AChR or MuSK antibodies (seronegative myasthenia) appear to present another disease subtype that is highly similar to that of typical myasthenia gravis. We demonstrate a new method that detects AChR antibodies in these patients and show that these low-affinity AChR antibodies are predominantly IgG1 and can activate complement C3b deposition. Similarly MuSK antibodies, although mainly IgG4, are partially IgG1 and can activate C3b deposition. Overall, these results suggest that complement-activation may be an important pathogenic mechanism even in patients without conventional AChR antibodies.Annals of the New York Academy of Sciences 07/2008; 1132:84-92. · 3.15 Impact Factor -
Article: Autoimmunizing Mechanisms in Thymoma and Thymus*
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ABSTRACT: Autoimmunizing mechanisms are very hard to study in humans, so we have focused on vital clues in thymomas and hyperplastic thymuses in myasthenia gravis (MG). According to our multi-step hypothesis: thymic epithelial cells (TEC) present epitopes from the isolated acetylcholine receptor (AChR) subunits they express, and autoimmunize helper T cells; subsequently, these evoke “early antibodies” that then attack rare thymic myoid cells expressing intact AChR; in the resulting germinal centers, autoantibodies diversify to recognize native AChR. We have studied: 1) thymomas, to identify autoimmunizing cell types, focusing on IFN-α, against which many patients have high titer autoantibodies, as in another highly informative autoimmune syndrome. Although IFN-α is much easier to label than the sparse and delicate AChR subunits, we have not yet located obviously autoimmunizing micro-environments; 2) hyperplastic MG thymuses, where we find (a) upregulation of complement receptors and regulators on hyperplastic TEC and deposition of activated C3b complement component on them, (b) absence of complement regulators from almost all myoid cells, indicating vulnerability to attack, and (c) deposition of C3b, and even of the terminal membrane attack complex, especially on the myoid cells close to the infiltrating germinal centers. The changes are very similar in over 50% of the so-called seronegative patients with generalized MG (SNMG) but without detectable autoantibodies against AChR or MuSK, consistently with other evidence that they belong to the spectrum of AChR-seropositive MG. Together, moreover, our findings implicate both myoid cells and TEC in autoimmunization, and thus strongly support our hypothesis.Annals of the New York Academy of Sciences 06/2008; 1132(1):163 - 173. · 3.15 Impact Factor -
Article: IgG1 antibodies to acetylcholine receptors in 'seronegative' myasthenia gravis.
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ABSTRACT: Only around 80% of patients with generalized myasthenia gravis (MG) have serum antibodies to acetylcholine receptor [AChR; acetylcholine receptor antibody positive myasthenia gravis (AChR-MG)] by the radioimmunoprecipitation assay used worldwide. Antibodies to muscle specific kinase [MuSK; MuSK antibody positive myasthenia gravis (MuSK-MG)] make up a variable proportion of the remaining 20%. The patients with neither AChR nor MuSK antibodies are often called seronegative (seronegative MG, SNMG). There is accumulating evidence that SNMG patients are similar to AChR-MG in clinical features and thymic pathology. We hypothesized that SNMG patients have low-affinity antibodies to AChR that cannot be detected in solution phase assays, but would be detected by binding to the AChRs on the cell membrane, particularly if they were clustered at the high density that is found at the neuromuscular junction. We expressed recombinant AChR subunits with the clustering protein, rapsyn, in human embryonic kidney cells and tested for binding of antibodies by immunofluorescence. To identify AChRs, we tagged either AChR or rapsyn with enhanced green fluorescence protein, and visualized human antibodies with Alexa Fluor-labelled secondary or tertiary antibodies, or by fluorescence-activated cell sorter (FACS). We correlated the results with the thymic pathology where available. We detected AChR antibodies to rapsyn-clustered AChR in 66% (25/38) of sera previously negative for binding to AChR in solution and confirmed the results with FACS. The antibodies were mainly IgG1 subclass and showed ability to activate complement. In addition, there was a correlation between serum binding to clustered AChR and complement deposition on myoid cells in patients' thymus tissue. A similar approach was used to demonstrate that MuSK antibodies, although mainly IgG4, were partially IgG1 subclass and capable of activating complement when bound to MuSK on the cell surface. These observations throw new light on different forms of MG paving the way for improved diagnosis and management, and the approaches used have applicability to other antibody-mediated conditions.Brain 06/2008; 131(Pt 7):1940-52. · 9.46 Impact Factor -
Article: Myasthenia gravis thymus: complement vulnerability of epithelial and myoid cells, complement attack on them, and correlations with autoantibody status.
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ABSTRACT: In early-onset myasthenia gravis, the thymus contains lymph node-type infiltrates with frequent acetylcholine receptor (AChR)-specific germinal centers. Our recent evidence/two-step hypothesis implicates hyperplastic medullary thymic epithelial cells (expressing isolated AChR subunits) in provoking infiltration and thymic myoid cells (with intact AChR) in germinal center formation. To test this, we screened for complement attack in a wide range of typical generalized myasthenia patients. Regardless of the exact serology, thymi with sizeable infiltrates unexpectedly showed patchy up-regulation of both C5a receptor and terminal complement regulator CD59 on hyperplastic epithelial cells. These latter also showed deposits of activated C3b complement component, which appeared even heavier on infiltrating B cells, macrophages, and especially follicular dendritic cells. Myoid cells appeared particularly vulnerable to complement; few expressed the early complement regulators CD55, CD46, or CR1, and none were detectably CD59(+). Indeed, when exposed to infiltrates, and especially to germinal centers, myoid cells frequently labeled for C1q, C3b (25 to 48%), or even the terminal C9, with some showing obvious damage. This early/persistent complement attack on both epithelial and myoid cells strongly supports our hypothesis, especially implicating exposed myoid cells in germinal center formation/autoantibody diversification. Remarkably, the similar changes place many apparent AChR-seronegative patients in the same spectrum as the AChR-seropositive patients.American Journal Of Pathology 10/2007; 171(3):893-905. · 4.89 Impact Factor -
Article: An IRF8-binding promoter variant and AIRE control CHRNA1 promiscuous expression in thymus.
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ABSTRACT: Promiscuous expression of tissue-restricted auto-antigens in the thymus imposes T-cell tolerance and provides protection from autoimmune diseases. Promiscuous expression of a set of self-antigens occurs in medullary thymic epithelial cells and is partly controlled by the autoimmune regulator (AIRE), a nuclear protein for which loss-of-function mutations cause the type 1 autoimmune polyendocrine syndrome. However, additional factors must be involved in the regulation of this promiscuous expression. Here we describe a mechanism controlling thymic transcription of a prototypic tissue-restricted human auto-antigen gene, CHRNA1. This gene encodes the alpha-subunit of the muscle acetylcholine receptor, which is the main target of pathogenic auto-antibodies in autoimmune myasthenia gravis. On re-sequencing the CHRNA1 gene, we identified a functional bi-allelic variant in the promoter that is associated with early onset of disease in two independent human populations (France and United Kingdom). We show that this variant prevents binding of interferon regulatory factor 8 (IRF8) and abrogates CHRNA1 promoter activity in thymic epithelial cells in vitro. Notably, both the CHRNA1 promoter variant and AIRE modulate CHRNA1 messenger RNA levels in human medullary thymic epithelial cells ex vivo and also in a transactivation assay. These findings reveal a critical function of AIRE and the interferon signalling pathway in regulating quantitative expression of this auto-antigen in the thymus, suggesting that together they set the threshold for self-tolerance versus autoimmunity.Nature 09/2007; 448(7156):934-7. · 36.28 Impact Factor -
Article: An IRF8-binding promoter variant and AIRE control CHRNA1 promiscuous expression in thymus
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ABSTRACT: Promiscuous expression of tissue-restricted auto-antigens in the thymus imposes T-cell tolerance and provides protection from autoimmune diseasesNature 08/2007; 448(7156):934-937. · 36.28 Impact Factor -
Article: Humanized mouse models for organ-specific autoimmune diseases.
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ABSTRACT: Murine models for human autoimmune diseases are an essential tool for studying pathogenesis and for identifying new therapeutic targets. Mice are not the natural disease host, and conventional models have proved to be poor predictors of efficacy and safety in recent trials aiming to translate drug and biologic treatments to humans. Evidently, further steps towards recapitulating human diseases are urgently needed, for example using transgenic predisposing human HLA allele(s) plus T-cell receptor(s) implicated in a representative patient's autoimmune disease. The latest development - humanizing most of the immune system by transplanting human hematopoietic stem cells into severely immunodeficient mice - should lead to even better modeling.Current Opinion in Immunology 01/2007; 18(6):704-9. · 9.52 Impact Factor -
Article: ANTI‐ACETYLCHOLINE RECEPTOR ANTIBODY SYNTHESIS BY CULTURED LYMPHOCYTES IN MY ASTHENIA GRAVIS: THYMIC AND PERIPHERAL BLOOD CELL INTERACTIONS*
Annals of the New York Academy of Sciences 12/2006; 377(1):393 - 402. · 3.15 Impact Factor -
Article: The value of animal models for drug development in multiple sclerosis.
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ABSTRACT: The rodent model for multiple sclerosis, experimental allergic (autoimmune) encephalomyelitis (EAE), has been used to dissect molecular mechanisms of the autoimmune inflammatory response, and hence to devise and test new therapies for multiple sclerosis. Clearly, artificial immunization against myelin may not necessarily reproduce all the pathogenetic mechanisms operating in the human disease, but most therapies tested in multiple sclerosis patients are nevertheless based on concepts derived from studies in EAE. Unfortunately, several treatments, though successful in pre-clinical EAE trials, were either less effective in patients, worsened disease or caused unexpected, severe adverse events, as we review here. These discrepancies must, at least in part, be due to genetic and environmental differences, but the precise underlying reasons are not yet clear. Our understanding of EAE pathogenesis is still incomplete and so, therefore, are any implications for drug development in these models. Here, we suggest some potential explanations based on new thinking about key pathogenic concepts and differences that may limit extrapolation from EAE to multiple sclerosis. To try to circumvent these rodent-human dissimilarities more systematically, we propose that pre-clinical trials should be started in humanized mouse models.Brain 09/2006; 129(Pt 8):1940-52. · 9.46 Impact Factor
Top co-authors
Top Journals
Institutions
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2011
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University of Tartu
Tartu, Tartumaa, Estonia
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2005–2010
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University of Oxford
- • Neurosciences Research Group
- • Nuffield Department of Clinical Neurosciences
Oxford, ENG, United Kingdom -
Aarhus Universitetshospital
- Department of Clinical Immunology
Århus, Central Jutland, Denmark
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2008
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Osaka City University
Ōsaka-shi, Osaka-fu, Japan
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2002–2008
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John Radcliffe Hospital
- Department of Clinical Neurology
Oxford, ENG, United Kingdom -
University of Glasgow
Glasgow, SCT, United Kingdom
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2006
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National Institute for Biological Standards and Control
Potters Bar, ENG, United Kingdom
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