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2.
J Eur Acad Dermatol Venereol ; 36(11): 1904-1926, 2022 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-36056736

RESUMO

The evidence- and consensus-based guideline on atopic eczema was developed in accordance with the EuroGuiDerm Guideline and Consensus Statement Development Manual. Four consensus conferences were held between December 2020 and July 2021. Twenty-nine experts (including clinicians and patient representatives) from 12 European countries participated. This second part of the guideline includes recommendations and detailed information on basic therapy with emollients and moisturizers, topical anti-inflammatory treatment, antimicrobial and antipruritic treatment and UV phototherapy. Furthermore, this part of the guideline covers techniques for avoiding provocation factors, as well as dietary interventions, immunotherapy, complementary medicine and educational interventions for patients with atopic eczema and deals with occupational and psychodermatological aspects of the disease. It also contains guidance on treatment for paediatric and adolescent patients and pregnant or breastfeeding women, as well as considerations for patients who want to have a child. A chapter on the patient perspective is also provided. The first part of the guideline, published separately, contains recommendations and guidance on systemic treatment with conventional immunosuppressive drugs, biologics and janus kinase (JAK) inhibitors, as well as information on the scope and purpose of the guideline, and a section on guideline methodology.


Assuntos
Anti-Infecciosos , Produtos Biológicos , Dermatite Atópica , Fármacos Dermatológicos , Eczema , Adolescente , Anti-Infecciosos/uso terapêutico , Anti-Inflamatórios/uso terapêutico , Antipruriginosos/uso terapêutico , Produtos Biológicos/uso terapêutico , Criança , Dermatite Atópica/tratamento farmacológico , Fármacos Dermatológicos/uso terapêutico , Eczema/tratamento farmacológico , Emolientes/uso terapêutico , Feminino , Humanos , Janus Quinases
3.
J Eur Acad Dermatol Venereol ; 36(9): 1409-1431, 2022 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-35980214

RESUMO

The evidence- and consensus-based guideline on atopic eczema was developed in accordance with the EuroGuiDerm Guideline and Consensus Statement Development Manual. Four consensus conferences were held between December 2020 and July 2021. Twenty-nine experts (including clinicians and patient representatives) from 12 European countries participated. This first part of the guideline includes general information on its scope and purpose, the health questions covered, target users and a methods section. It also provides guidance on which patients should be treated with systemic therapies, as well as recommendations and detailed information on each systemic drug. The systemic treatment options discussed in the guideline comprise conventional immunosuppressive drugs (azathioprine, ciclosporin, glucocorticosteroids, methotrexate and mycophenolate mofetil), biologics (dupilumab, lebrikizumab, nemolizumab, omalizumab and tralokinumab) and janus kinase inhibitors (abrocitinib, baricitinib and upadacitinib). Part two of the guideline will address avoidance of provocation factors, dietary interventions, immunotherapy, complementary medicine, educational interventions, occupational and psychodermatological aspects, patient perspective and considerations for paediatric, adolescent, pregnant and breastfeeding patients.


Assuntos
Dermatite Atópica , Eczema , Adolescente , Azatioprina/uso terapêutico , Criança , Ciclosporina/uso terapêutico , Dermatite Atópica/tratamento farmacológico , Eczema/tratamento farmacológico , Humanos , Imunossupressores/uso terapêutico , Ácido Micofenólico/uso terapêutico
6.
J Eur Acad Dermatol Venereol ; 34(12): 2717-2744, 2020 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-33205485

RESUMO

Atopic dermatitis (AD) is a highly pruritic, chronic inflammatory skin disease. The diagnosis is made using evaluated clinical criteria. Disease activity and burden are best measured with a composite score, assessing both objective and subjective symptoms, such as SCORing Atopic Dermatitis (SCORAD). AD management must take into account clinical and pathogenic variabilities, the patient's age and also target flare prevention. Basic therapy includes hydrating and barrier-stabilizing topical treatment universally applied, as well as avoiding specific and unspecific provocation factors. Visible skin lesions are treated with anti-inflammatory topical agents such as corticosteroids and calcineurin inhibitors (tacrolimus and pimecrolimus), which are preferred in sensitive locations. Topical tacrolimus and some mid-potency corticosteroids are proven agents for proactive therapy, which is defined as the long-term intermittent anti-inflammatory therapy of frequently relapsing skin areas. Systemic anti-inflammatory or immunosuppressive treatment is a rapidly changing field requiring monitoring. Oral corticosteroids have a largely unfavourable benefit-risk ratio. The IL-4R-blocker dupilumab is a safe, effective and licensed, but expensive, treatment option with potential ocular side-effects. Other biologicals targeting key pathways in the atopic immune response, as well as different Janus kinase inhibitors, are among emerging treatment options. Dysbalanced microbial colonization and infection may induce disease exacerbation and can justify additional antimicrobial treatment. Systemic antihistamines (H1R-blockers) only have limited effects on AD-related itch and eczema lesions. Adjuvant therapy includes UV irradiation, preferably narrowband UVB or UVA1. Coal tar may be useful for atopic hand and foot eczema. Dietary recommendations should be patient-specific, and elimination diets should only be advised in case of proven food allergy. Allergen-specific immunotherapy to aeroallergens may be useful in selected cases. Psychosomatic counselling is recommended to address stress-induced exacerbations. Efficacy-proven 'Eczema school' educational programmes and therapeutic patient education are recommended for both children and adults.


Assuntos
Dermatite Atópica , Eczema , Adulto , Anti-Inflamatórios/uso terapêutico , Inibidores de Calcineurina/uso terapêutico , Criança , Dermatite Atópica/diagnóstico , Dermatite Atópica/tratamento farmacológico , Humanos , Prurido , Tacrolimo/uso terapêutico
10.
J Eur Acad Dermatol Venereol ; 32(6): 850-878, 2018 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-29878606

RESUMO

This guideline was developed as a joint interdisciplinary European project, including physicians from all relevant disciplines as well as patients. It is a consensus-based guideline, taking available evidence from other guidelines, systematic reviews and published studies into account. This second part of the guideline covers antimicrobial therapy, systemic treatment, allergen-specific immunotherapy, complementary medicine, psychosomatic counselling and educational interventions, whereas the first part covers methods, patient perspective, general measures and avoidance strategies, basic emollient treatment and bathing, dietary intervention, topical anti-inflammatory therapy, phototherapy and antipruritic therapy. Management of AE must consider the individual clinical variability of the disease. Systemic immunosuppressive treatment with cyclosporine, methotrexate, azathioprine and mycophenolic acid is established option for severe refractory cases, and widely available. Biologicals targeting the T helper 2 pathway such as dupilumab may be a safe and effective, disease-modifying alternative when available. Oral drugs such as JAK inhibitors and histamine 4 receptor antagonists are in development. Microbial colonization and superinfection may cause disease exacerbation and can require additional antimicrobial treatment. Allergen-specific immunotherapy with aeroallergens may be considered in selected cases. Psychosomatic counselling is recommended especially in stress-induced exacerbations. Therapeutic patient education ('Eczema school') is recommended for children and adult patients. General measures, basic emollient treatment, bathing, dietary intervention, topical anti-inflammatory therapy, phototherapy and antipruritic therapy have been addressed in the first part of the guideline.


Assuntos
Consenso , Dermatite Atópica/terapia , Eczema/terapia , Guias de Prática Clínica como Assunto , Adulto , Alérgenos/toxicidade , Anti-Infecciosos/uso terapêutico , Anti-Inflamatórios/uso terapêutico , Criança , Dermatite Atópica/dietoterapia , Dermatite Atópica/tratamento farmacológico , Dermatite Atópica/microbiologia , Fármacos Dermatológicos/uso terapêutico , Eczema/dietoterapia , Eczema/tratamento farmacológico , Eczema/microbiologia , Europa (Continente) , Humanos , Imunossupressores/uso terapêutico , Imunoterapia , Educação de Pacientes como Assunto
11.
J Eur Acad Dermatol Venereol ; 32(5): 657-682, 2018 May.
Artigo em Inglês | MEDLINE | ID: mdl-29676534

RESUMO

This guideline was developed as a joint interdisciplinary European project, including physicians from all relevant disciplines as well as patients. It is a consensus-based guideline, taking available evidence from other guidelines, systematic reviews and published studies into account. This first part of the guideline covers methods, patient perspective, general measures and avoidance strategies, basic emollient treatment and bathing, dietary intervention, topical anti-inflammatory therapy, phototherapy and antipruritic therapy, whereas the second part covers antimicrobial therapy, systemic treatment, allergen-specific immunotherapy, complementary medicine, psychosomatic counselling and educational interventions. Management of AE must consider the individual clinical variability of the disease; highly standardized treatment rules are not recommended. Basic therapy is focused on treatment of disturbed barrier function by hydrating and lubricating topical treatment, besides further avoidance of specific and unspecific provocation factors. Topical anti-inflammatory treatment based on glucocorticosteroids and calcineurin inhibitors is used for flare management and for proactive therapy for long-term control. Topical corticosteroids remain the mainstay of therapy, whereas tacrolimus and pimecrolimus are preferred in sensitive skin areas and for long-term use. Topical phosphodiesterase inhibitors may be a treatment alternative when available. Adjuvant therapy includes UV irradiation, preferably with UVB 311 nm or UVA1. Pruritus is targeted with the majority of the recommended therapies, but some patients may need additional antipruritic therapy. Antimicrobial therapy, systemic anti-inflammatory treatment, immunotherapy, complementary medicine and educational intervention will be addressed in part II of the guideline.


Assuntos
Dermatite Atópica/etiologia , Dermatite Atópica/terapia , Emolientes/uso terapêutico , Glucocorticoides/uso terapêutico , Prurido/terapia , Higiene da Pele , Administração Cutânea , Adolescente , Adulto , Alérgenos/efeitos adversos , Inibidores de Calcineurina/uso terapêutico , Criança , Pré-Escolar , Consenso , Dieta , Exposição Ambiental/prevenção & controle , Poluentes Ambientais/efeitos adversos , Europa (Continente) , Hipersensibilidade Alimentar/complicações , Hipersensibilidade Alimentar/diagnóstico , Glucocorticoides/administração & dosagem , Humanos , Lactente , Recém-Nascido , Fototerapia , Prurido/etiologia , Índice de Gravidade de Doença
12.
Allergy ; 72(11): 1713-1719, 2017 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-28439896

RESUMO

BACKGROUND: Adherence to topical corticosteroids (TCS) is essential for the effective treatment of atopic dermatitis but can be limited by concerns about their use. This study examined the feasibility of applying the validated TOPICOP score for assessing TCS phobia across different countries. METHODS: This was a prospective multicentre feasibility study conducted in 21 hospitals in 17 countries. Patients >3 months of age with atopic dermatitis or their parents or legal representatives completed a validated translation of the TOPICOP questionnaire in the country's native language. Respondents also completed questionnaires collecting opinions about the feasibility and acceptability of the TOPICOP questionnaire. RESULTS: A total of 1564 participants in 15 countries were included in the analysis. 81% of respondents considered the questions clear or very clear, and 79% reported that it took less than 5 minutes to complete. Each of the individual items in the TOPICOP questionnaire was considered to be not at all difficult to answer by 49% to 74% of participants. The mean global TOPICOP score was 44.7%±20.5. Mean TOPICOP subscores were 37.0±22.8% for knowledge and beliefs, 54.7±27.8% for fears and 50.1±29.1% for behaviours. Global scores and subscores differed between countries, although the subscores did not always vary in parallel, suggesting different levels of TCS phobia and different drivers for each country. CONCLUSIONS: The TOPICOP score can be feasibly applied across countries and may therefore be useful for obtaining qualitative and quantitative data from international studies and for adapting patient education and treatment.


Assuntos
Corticosteroides/uso terapêutico , Dermatite Atópica/tratamento farmacológico , Transtornos Fóbicos , Administração Tópica , Criança , Pré-Escolar , Dermatite Atópica/psicologia , Estudos de Viabilidade , Humanos , Lactente , Estudos Prospectivos , Inquéritos e Questionários
13.
Spectrochim Acta A Mol Biomol Spectrosc ; 173: 637-646, 2017 Feb 15.
Artigo em Inglês | MEDLINE | ID: mdl-27780126

RESUMO

Correlating the Raman and infrared spectra of shocked minerals in Csátalja ordinary chondrite (H4, S2, W2) with controlling the composition by EPMA measurements, we identified and improved various shock indicators, as infrared spectro-microscopic analysis has been poorly used for shock impact alteration studies of meteorites to date. We also provide reference spectra as SOM for the community with local mineralogical and shock alteration related context to support further standardization of the IR ATR based measurements. Raman band positions shifted in conjunction with the increase in full width half maximum (FWHM) with shock stage in olivine minerals while in the infrared spectra when comparing the IR band positions and IR maximal absorbance, increasing correlation was found as a function of increasing shock effects. This is the first observational confirmation with the ATR method of the already expected shock related disordering. In the case of shocked pyroxenes the well-known peak broadening and peak shift was confirmed by Raman method, beyond the level that could have been produced by only chemical changes. With increasing shock level the 852-864cm-1 and 1055-1071cm-1 FTIR bands finally disappeared. From the shock effect occasionally mixed mineral structures formed, especially feldspars together with pyroxene. Feldspars were only present in the shock melted volumes, thus produced by the shock effect itself. Based on the above mentioned observations in Csátalja meteorite the less shocked (only fractured) part witnessed 2-6GPa shock pressure with temperature below 100°C. The moderately shocked parts (minerals with mosaicism and mechanical twins) witnessed 5-10GPa pressure and 900°C temperature. The strongly shocked area (many olivine and pyroxene grains) was subject to 10-15GPa and 1000°C. The existence of broad peak near 510cm-1 and disappearance of other peaks of feldspar at 480 and 570cm-1 indicate the presence of maskelynite, which proposes that the peak shock pressure could reach 20GPa at certain locations. We identified higher shock levels than earlier works in this meteorite and provided examples how heterogeneous the shock effect and level could be at small spatial scale. The provided reference spectra support the future improvement for the standardization of infrared ATR based methods and the understanding of shock-related mineral alterations beyond the optical appearance.

14.
J Mol Neurosci ; 60(4): 525-530, 2016 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-27752928

RESUMO

The effects of ghrelin on vasopressin and oxytocin secretion were studied in 13-14-day cell cultures of isolated rat neurohypophyseal tissue. The vasopressin and oxytocin contents of the supernatant were determined by radioimmunoassay after a 1- or 2-h incubation. Significantly increased levels of vasopressin and oxytocin production were detected in the cell culture media following ghrelin administration, depending on the ghrelin doses. The oxytocin level proved to be more elevated than that of vasopressin. The increase of vasopressin and oxytocin secretion could be totally blocked by previous administration of the ghrelin receptor antagonist ([D-Lys3]-growth hormone-releasing peptide-6). Application of the ghrelin receptor antagonist after ghrelin administration proved ineffective. The results indicate that vasopressin and oxytocin release is influenced directly by the ghrelin system, and the effects of ghrelin on vasopressin and oxytocin secretion from the neurohypophyseal tissue in rats can occur at the level of the posterior pituitary. Our observations lend support to the view that neurohypophysis contains ghrelin receptors.


Assuntos
Exocitose , Grelina/farmacologia , Hormônios/farmacologia , Células Neuroendócrinas/metabolismo , Ocitocina/metabolismo , Hipófise/citologia , Vasopressinas/metabolismo , Animais , Linhagem Celular , Células Cultivadas , Masculino , Células Neuroendócrinas/efeitos dos fármacos , Oligopeptídeos/farmacologia , Hipófise/metabolismo , Ratos , Ratos Wistar , Receptores de Grelina/antagonistas & inibidores , Receptores de Grelina/metabolismo
15.
J Eur Acad Dermatol Venereol ; 30(5): 729-47, 2016 May.
Artigo em Inglês | MEDLINE | ID: mdl-27004560

RESUMO

Atopic dermatitis (AD) is a clinically defined, highly pruritic, chronic inflammatory skin disease of children and adults. The diagnosis is made using evaluated clinical criteria. Disease activity is best measured with a composite score assessing both objective signs and subjective symptoms, such as SCORAD. The management of AD must consider the clinical and pathogenic variabilities of the disease and also target flare prevention. Basic therapy includes hydrating topical treatment, as well as avoidance of specific and unspecific provocation factors. Anti-inflammatory treatment of visible skin lesions is based on topical glucocorticosteroids and the topical calcineurin inhibitors tacrolimus and pimecrolimus. Topical calcineurin inhibitors are preferred in sensitive locations. Tacrolimus and mid-potent steroids are proven for proactive therapy, which is long-term intermittent anti-inflammatory therapy of the frequently relapsing skin areas. Systemic anti-inflammatory or immunosuppressive treatment is indicated for severe refractory cases. Biologicals targeting key mechanisms of the atopic immune response are promising emerging treatment options. Microbial colonization and superinfection may induce disease exacerbation and can justify additional antimicrobial treatment. Systemic antihistamines (H1R-blockers) may diminish pruritus, but do not have sufficient effect on lesions. Adjuvant therapy includes UV irradiation, preferably UVA1 or narrow-band UVB 311 nm. Dietary recommendations should be patient specific and elimination diets should only be advised in case of proven food allergy. Allergen-specific immunotherapy to aeroallergens may be useful in selected cases. Psychosomatic counselling is recommended to address stress-induced exacerbations. 'Eczema school' educational programmes have been proven to be helpful for children and adults.


Assuntos
Dermatite Atópica/terapia , Adulto , Criança , Dermatite Atópica/tratamento farmacológico , Dermatite Atópica/radioterapia , Humanos
16.
Autoimmunity ; 39(3): 223-32, 2006 May.
Artigo em Inglês | MEDLINE | ID: mdl-16769656

RESUMO

Idiopathic inflammatory myopathies (IIMs) are systemic autoimmune diseases characterized by chronic muscle inflammation resulting in progressive weakness and frequent involvement of internal organs, mainly the pulmonary, gastrointestinal and cardiac systems which considerably contribute to the morbidity and mortality of the IIMs. Aim of this study was to present clinical characteristics, disease course, frequency of relapses and survival in patients with juvenile dermatomyositis (DM). A national registry of patients with juvenile IIMs was elaborated by the authors in Hungary. We have summarized data of the register according to signs and symptoms, disease course, frequency of relapses and survival of patients with juvenile IIM. Analysis was performed using data of 44 patients with juvenile DM diagnosed between 1976 and 2004 according to Bohan and Peter's criteria. Survival probability was calculated by Kaplan-Meier method. Data of patients with juvenile DM were compared with data of 66 patients with adult DM. The most frequent cutaneous features were facial erythema and heliotrope rash. Extramuscular and extraskeletal manifestations of the disease were more frequent in adult patients. The most common extramuscular feature was arthralgia in both groups of patients with juvenile or adult DM. Cardiac manifestation of the disease was not observed in juvenile patients. Respiratory muscle involvement and interstitial lung disease (ILD) were more frequent among adult DM patients than cardiac manifestation of the myositis. In view of the disease course, the authors found that frequency of polycyclic and monophasic subtypes of the disease were mainly similar. The hazard of relapse was found higher during the first year after the remission. None of the juvenile patients died. Among adult patients four disease-specific deaths occurred. There was no correlation between relapse free survival and initial therapeutic regimen. Many of our patients had polycyclic or chronic disease. As relapses can occur after a prolonged disease-free interval, patients should be followed up for at least 2 years. Although we found favourable survival probability, further investigations are needed to assess functional outcome.


Assuntos
Dermatomiosite , Adolescente , Adulto , Idade de Início , Idoso , Criança , Pré-Escolar , Estudos de Coortes , Dermatomiosite/diagnóstico , Dermatomiosite/tratamento farmacológico , Dermatomiosite/epidemiologia , Dermatomiosite/fisiopatologia , Eritema , Exantema/etiologia , Feminino , Glucocorticoides/uso terapêutico , Cardiopatias/etiologia , Humanos , Hungria/epidemiologia , Imunoglobulinas Intravenosas/uso terapêutico , Imunossupressores/uso terapêutico , Doenças Pulmonares Intersticiais/etiologia , Masculino , Pessoa de Meia-Idade , Sistema de Registros , Músculos Respiratórios/fisiopatologia
17.
Arch Dis Child ; 91(11): 905-10, 2006 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-16798785

RESUMO

BACKGROUND: Concern exists that the prolonged application of immunomodulators to treat atopic dermatitis may cause systemic immunosuppression. AIMS: In a 7-month, multicentre, randomised, controlled trial, we investigated the equivalence of response to vaccination against meningococcal serogroup C disease with a protein-conjugate vaccine in children (2-11 years) with moderate to severe atopic dermatitis, by applying either 0.03% tacrolimus ointment (TAC-O; n = 121[corrected]) or a hydrocortisone ointment regimen (HC-O; n = 111). METHODS: TAC-O was applied twice daily (bid) for 3 weeks, and thereafter daily until clearance. 1% hydrocortisone acetate (HA) for head/neck and 0.1% hydrocortisone butyrate ointment for trunk/limbs was applied bid for 2 weeks; thereafter HA was applied bid to all affected areas. At week 1, patients were vaccinated with protein-conjugate vaccine against meningococcal serogroup C, and challenged at month 6 with low dose meningococcal polysaccharide vaccine. The control group (44 non-atopic dermatitis children) received the primary vaccination and challenge dose. Assessments were made at baseline, weeks 1 and 5, and months 6 and 7. The primary end point was the percentage of patients with a serum bactericidal antibody (SBA) titre > or = 8 at the week 5 visit. RESULTS: The response rate (patients with SBA titre > or = 8) was 97.5% (confidence interval (CI) approximately 97.3 to 100), 99.1% (94.8 to 100) and 97.7% (93.3 to 100) in the TAC-O, HC-O and control groups, respectively. CONCLUSIONS: The immune response to vaccination against meningococcal serogroup C in children with atopic dermatitis applying either 0.03% TAC-O or HC is equivalent. Ointment application does not affect the immediate response to vaccination, generation of immune memory or humoral and cell-mediated immunity.


Assuntos
Dermatite Atópica/imunologia , Imunossupressores/efeitos adversos , Infecções Meningocócicas/imunologia , Vacinas Meningocócicas/imunologia , Tacrolimo/efeitos adversos , Administração Tópica , Antígenos CD/imunologia , Criança , Pré-Escolar , Dermatite Atópica/tratamento farmacológico , Método Duplo-Cego , Feminino , Humanos , Imunidade Celular/efeitos dos fármacos , Isotipos de Imunoglobulinas/imunologia , Memória Imunológica/efeitos dos fármacos , Masculino , Infecções Meningocócicas/prevenção & controle , Neisseria meningitidis Sorogrupo C
18.
Clin Exp Rheumatol ; 23(1): 50-6, 2005.
Artigo em Inglês | MEDLINE | ID: mdl-15789887

RESUMO

OBJECTIVE: Our aim is to present the disease course, frequency of relapses and survival of juvenile and adult dermatomyositis (JDM/DM) patients. METHODS: Analysis was performed using data on 73 patients. The median follow-up for 38 JDM patients was 32 months and 78 months for 35 adult DM patients. RESULTS: 23/38 JDM patients (60%) had monophasic, 12/38 (31.6%) had polycyclic and 3/38 (7.9%) had chronic disease. Among children treated only with glucocorticoids, 12/20 (60%) had monophasic and 8/20 (40%) had polycyclic disease. 10/17 (58.8%) children, who required second-line immunosuppressive agents, had monophasic and 4/17 (23.5%) had polycyclic disease. 18/35 DM (51.4%) patients had monophasic, 13/35 (37.1%) had polycyclic, 1/35 (2.9%) had chronic disease and 3/35 (8.6%) had fulminant myositis. Among DM patients requiring only glucocorticoids, 12/20 (60%) were monophasic and 8/20 (40%) were polycyclic. In patients requiring second-line immunosuppressive agents, 6/15 patients (40%) had monophasic and 5/15 (33.3%) had polycyclic disease. Among patients with polycyclic disease, the risk of relapse was higher during first year than later in the disease course. None of the JDM patients have died, while 4 disease-specific deaths occurred in adult patients. There was no significant difference between the survival of JDM and DM patients. DISCUSSION: There was no correlation between relapse-free survival and the initial therapeutic regimen. Many of our patients had polycyclic or chronic disease. As relapses can occur after a prolonged disease-free interval, patients should be followed for at least 2 years. Although we found a favourable survival rate, further investigations are needed to assess functional outcome.


Assuntos
Dermatomiosite/epidemiologia , Adolescente , Adulto , Idoso , Criança , Pré-Escolar , Dermatomiosite/terapia , Progressão da Doença , Feminino , Seguimentos , Humanos , Hungria/epidemiologia , Masculino , Pessoa de Meia-Idade , Recidiva , Estudos Retrospectivos , Análise de Sobrevida
19.
Gut ; 53(5): 641-8, 2004 May.
Artigo em Inglês | MEDLINE | ID: mdl-15082580

RESUMO

BACKGROUND: IgA class serum autoantibodies against type 2 (tissue) transglutaminase (TG2) bind to both intestinal and extraintestinal normal tissue sections in vitro, eliciting endomysial, reticulin, and jejunal antibody reactions. It is not known whether similar binding also occurs in coeliac patients in vivo, and may thereby contribute to disease manifestations. AIMS: To investigate intestinal and extraintestinal coeliac tissues for the presence of in vivo bound TG2 specific IgA and its relation to small intestinal mucosal atrophy. PATIENTS: We investigated jejunal samples with normal villous morphology from 10 patients with developing coeliac disease who subsequently progressed to a flat lesion, from 11 patients with dermatitis herpetiformis, and from 12 non-coeliac controls. Six extrajejunal biopsy samples (liver, lymph node, muscle, appendix), obtained based on independent clinical indications from patients with active coeliac disease, were also studied. METHODS: Double colour immunofluorescent studies for in situ IgA, TG2, and laminin were performed. IgA was eluted from tissue sections and tested for TG2 specificity by enzyme linked immunosorbent assay and indirect immunofluorescence. RESULTS: IgA (in one IgA deficient case IgG) deposition on extracellularly located TG2 was detected in jejunal and extrajejunal specimens of all coeliac patients, and also in seven of 11 dermatitis herpetiformis patients, of whom two had no circulating endomysial antibodies. IgA eluted from extraintestinal coeliac tissues was targeted against TG2. CONCLUSIONS: Coeliac IgA targets jejunal TG2 early in disease development even when endomysial antibodies are not present in the circulation. Extraintestinal target sites of coeliac IgA further indicate that humoral immunity may have a pathogenetic role.


Assuntos
Autoanticorpos/imunologia , Doença Celíaca/imunologia , Proteínas de Ligação ao GTP/imunologia , Transglutaminases/imunologia , Adolescente , Adulto , Autoantígenos/metabolismo , Doença Celíaca/enzimologia , Criança , Pré-Escolar , Feminino , Técnica Direta de Fluorescência para Anticorpo , Humanos , Deficiência de IgA/imunologia , Imunoglobulina A/análise , Imunoglobulina A/imunologia , Imunoglobulina G/análise , Jejuno/imunologia , Fígado/enzimologia , Fígado/imunologia , Linfonodos/enzimologia , Linfonodos/imunologia , Masculino , Pessoa de Meia-Idade , Proteína 2 Glutamina gama-Glutamiltransferase
20.
Exp Dermatol ; 12(3): 324-9, 2003 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-12823447

RESUMO

Congenital ichthyosiform erythroderma (CIE) belongs together with lamellar ichthyosis (LI) to the group of autosomal recessive congenital ichthyoses (ARCI). Mutations in the transglutaminase (TGase) 1 gene (TGM1) have been identified in several families with LI and in some families with CIE. We report a case of CIE with two new nonsense mutations: a C7780G transversion in exon 11 resulting in a premature stop codon at aminoacid residue Y503X and a C8533G transversion in exon 13 leading to a nonsense mutation at S669X. These mutations were also identified in a heterozygous pattern in the unaffected parents. These two termination-codons result in the translation of a truncated protein at the C-terminal end domain of the TGM 1 molecule. B.C1 monoclonal antibody failed to detect TGase 1 in the patient's skin sample, and TGase activity measured by monodansyl cadaverine-incorporation showed the reduced TGase activity at the distribution of TGase 1 in the epidermis.


Assuntos
Códon sem Sentido , Eritrodermia Ictiosiforme Congênita/genética , Transglutaminases/genética , Criança , Pré-Escolar , Análise Mutacional de DNA , Humanos , Hungria , Masculino
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