Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 38
Filtrar
1.
Br J Dermatol ; 186(3): 453-465, 2022 03.
Artigo em Inglês | MEDLINE | ID: mdl-34637142

RESUMO

BACKGROUND: Tralokinumab, a fully human IgG4 monoclonal antibody that specifically binds with high affinity to interleukin-13, effectively reduces moderate-to-severe atopic dermatitis (AD) when given every 2 weeks. The incidence of conjunctivitis is elevated vs. placebo, but severity and aetiology have not been examined. OBJECTIVE: To analyse conjunctivitis data recorded in five randomized, placebo-controlled trials of tralokinumab in adult patients with moderate-to-severe AD. METHODS: Overall, 2285 adults with AD were studied up to 16 weeks. Cochran-Mantel-Haenszel weights were applied to calculate the adjusted incidence of adverse events. RESULTS: The incidence of conjunctivitis was higher (7·5%) with tralokinumab than with placebo (3·2%). Most events were mild or moderate in severity, and 78·6% and 73·9% of events resolved during the trial in the tralokinumab and placebo groups, respectively. Two (1·4%) events led to the permanent discontinuation of tralokinumab. An increased incidence of conjunctivitis, regardless of treatment group, was associated with more severe baseline AD, and history of allergic conjunctivitis/atopic keratoconjunctivitis, as well as the number of atopic comorbidities. LIMITATIONS: This analysis reports events up to week 16 only, with limited confirmation of conjunctivitis and its aetiology by an ophthalmologist, and insufficient reporting of ophthalmic treatments. CONCLUSIONS: Treatment with tralokinumab was associated with an increased incidence of conjunctivitis vs. placebo, but these cases were mostly mild and transient.


Assuntos
Anticorpos Monoclonais , Conjuntivite , Dermatite Atópica , Adulto , Anticorpos Monoclonais/efeitos adversos , Conjuntivite/epidemiologia , Dermatite Atópica/tratamento farmacológico , Dermatite Atópica/epidemiologia , Humanos , Ensaios Clínicos Controlados Aleatórios como Assunto , Índice de Gravidade de Doença , Resultado do Tratamento
2.
Br J Dermatol ; 182(1): 104-111, 2020 01.
Artigo em Inglês | MEDLINE | ID: mdl-30972740

RESUMO

BACKGROUND: Structured patient-reported outcomes of atopic dermatitis (AD) severity are not standardized in clinical practice. OBJECTIVES: To determine the construct validity, internal consistency, cross-cultural validity and floor or ceiling effects of multiple AD severity assessments. METHODS: This is a cross-sectional, population-based study of 2893 adults, including 602 adults who met a modified set of U.K. diagnostic criteria for AD. AD severity was assessed using self-reported global AD severity, Patient-Oriented Eczema Measure (POEM), Patient-Oriented Scoring Atopic Dermatitis (PO-SCORAD) and its objective and subjective components, and numerical rating scale (NRS)-itch. Quality of life was assessed using Short-Form (SF)-12 mental and physical health scores, Short-Form Six Dimensions (SF-6D) health utility scores and Dermatology Life Quality Index (DLQI). Mental health was assessed with the Hospital Anxiety and Depression Scale (HADS). RESULTS: PO-SCORAD, PO-SCORAD objective and subjective subscores, NRS-itch and POEM all had moderate-to-strong correlations with each other and DLQI, fair-to-moderate correlations with HADS-anxiety and HADS-depression, and inverse correlations with SF-12 mental component score and SF-6D (Pearson correlations, P < 0·001). All scores showed good criterion validity as judged by anova and receiver operator characteristics. PO-SCORAD, PO-SCORAD objective subscore and POEM had similarly good internal consistency (Cronbach's alpha = 0·84, 0·82 and 0·86); the PO-SCORAD subjective subscore was less internally consistent (alpha = 0·57). All scores showed potentially poor cross-cultural validity as demonstrated by uniform and nonuniform differential item functioning by age, sex and/or race/ethnicity for multiple items. There were floor effects for POEM, but not for the other assessments. CONCLUSIONS: PO-SCORAD, PO-SCORAD objective and subjective subscores, NRS-itch and POEM appear to be valid for assessing AD severity in clinical practice. What's already known about this topic? Few studies have demonstrated the validity of the atopic dermatitis severity assessments Patient-Oriented Scoring Atopic Dermatitis (PO-SCORAD), PO-SCORAD subscores, numerical rating scale (NRS)-itch and Patient-Oriented Eczema Measure (POEM). What does this study add? This study demonstrates that PO-SCORAD, PO-SCORAD subscores, NRS-itch and POEM all had good construct validity in the assessment of atopic dermatitis severity in adults. Only POEM demonstrated floor effects. What are the clinical implications of this work? PO-SCORAD, PO-SCORAD subscores, NRS-itch and POEM all appear to have sufficient validity to be used as assessments of atopic dermatitis severity in clinical practice.


Assuntos
Dermatite Atópica , Eczema , Adulto , Estudos Transversais , Dermatite Atópica/diagnóstico , Humanos , Medidas de Resultados Relatados pelo Paciente , Qualidade de Vida , Índice de Gravidade de Doença
3.
J Eur Acad Dermatol Venereol ; 33(7): 1341-1348, 2019 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-30883885

RESUMO

BACKGROUND: The distribution of atopic dermatitis (AD) lesions and its impact on quality of life (QOL) is not well established in the US adult population. OBJECTIVE: To elucidate the distribution of AD lesions and its impact on QOL in US adults with AD. METHODS: A cross-sectional, population-based study of 602 adults was performed. AD was determined using modified UK Diagnostic Criteria, and its lesional distribution was assessed. QOL was assessed using Dermatology Life Quality Index (DLQI). Latent class analysis (LCA) was used to determine distinct phenotypes of AD lesional distribution. Multivariable logistic regression was used to determine the relationship between DLQI and distinct phenotypes. RESULTS: The most common sites of skin lesions were reported to be the popliteal fossae, lower legs, dorsal feet and antecubital fossae. Most persons reported partial (19.0%) or complete (63.0%) symmetry of lesions on the extremities. Lesions on the trunk were significantly more common in blacks and Hispanics. Age ≥ 60 years was associated with significantly lower proportions of active lesions on the face and scalp, and significantly higher proportion of lesions on the buttocks or genitals. LCA identified 5 classes of lesional distribution: 1. lower probabilities of lesions affecting any sites; 2. Higher probability of lesions involving the anterior and posterior neck and trunk; 3. lesions involving the antecubital fossae and upper extremities; 4. lesions involving the arms, posterior hands, genitals and buttocks, and to a lesser extent face, palms and legs; 5. lesions affecting all sites. Class-2 (multivariable logistic regression; adjusted odds ratio [95% confidence interval]: 7.19 [3.21-16.07], class-3 (7.11 [3.20-15.80]), class-4 (6.90 [3.07-15.50]) and class-5 (7.92 [3.54-17.71]) were all significantly associated with higher DLQI scores compared to class 1. CONCLUSION: AD is associated with heterogeneous distribution of AD lesions, and distinct phenotypes that are associated with QOL impact.


Assuntos
Dermatite Atópica/epidemiologia , Dermatite Atópica/psicologia , Qualidade de Vida , Adolescente , Adulto , Negro ou Afro-Americano , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Braço , Nádegas , Estudos Transversais , Dermatite Atópica/etnologia , Dermatoses Faciais/epidemiologia , Dermatoses Faciais/psicologia , Feminino , Dermatoses do Pé/epidemiologia , Dermatoses do Pé/psicologia , Genitália , Dermatoses da Mão/epidemiologia , Dermatoses da Mão/psicologia , Hispânico ou Latino , Humanos , Análise de Classes Latentes , Dermatoses da Perna/epidemiologia , Dermatoses da Perna/psicologia , Masculino , Pessoa de Meia-Idade , Prevalência , Dermatoses do Couro Cabeludo/epidemiologia , Dermatoses do Couro Cabeludo/psicologia , Inquéritos e Questionários , Tronco , Estados Unidos/epidemiologia , População Branca , Adulto Jovem
4.
Br J Dermatol ; 181(3): 554-565, 2019 09.
Artigo em Inglês | MEDLINE | ID: mdl-30838645

RESUMO

BACKGROUND: The relationship between atopic dermatitis (AD), anxiety and depression in the U.S. adult population is not well established. OBJECTIVES: To determine the relationship of AD and its severity with symptoms and diagnosis of anxiety and depression in U.S. adults. METHODS: A cross-sectional, population-based study of 2893 adults was performed. AD was determined using modified U.K. Diagnostic Criteria. RESULTS: Adults with AD vs. those without AD had higher mean Hospital Anxiety and Depression Scale anxiety (HADS-A) (7·7 vs. 5·6) and depression (HADS-D) (6·0 vs. 4·3) scores and higher prevalences of abnormal (≥ 11) HADS-A (28·6% vs. 15·5%) and HADS-D (13·5% vs. 9·0%) scores. In multivariable linear and logistic regression models controlling for sociodemographics, AD was associated with significantly higher mean HADS-A and HADS-D scores (7·7 and 6·0) and higher odds of abnormal HADS-A [odds ratio (OR) 2·19, 95% confidence interval (CI) 1·65-2·91] and HADS-D scores (OR 1·50, 95% CI 1·04-2·17) (P ≤ 0·03 for all). Mean and abnormal HADS-A and HADS-D scores were increased in moderate and severe/very severe self-reported global AD severity, Patient-Oriented Eczema Measure (POEM), Patient-Oriented Scoring AD (PO-SCORAD), PO-SCORAD itch and sleep (P < 0·0001 for all). All respondents with severe PO-SCORAD, POEM and PO-SCORAD itch had borderline or abnormal HADS-A and HADS-D scores. Adults with AD vs. those without AD had higher prevalence of self-reported healthcare-diagnosed anxiety or depression in the past year (40·0% vs. 17·5%). Many adults with AD who had borderline and/or abnormal HADS-A or HADS-D scores reported no diagnosis of anxiety or depression. CONCLUSIONS: AD is associated with significantly increased anxiety and depression, which may go undiagnosed. What's already known about this topic? Previous studies found higher rates of anxiety and depression in clinical cohorts of patients with atopic dermatitis. What does this study add? This study found dramatically higher rates of anxiety and depression among adults with atopic dermatitis in the U.S. population, which was primarily driven by atopic dermatitis severity. Anxiety and depression often go undiagnosed in adults with atopic dermatitis.


Assuntos
Ansiedade/epidemiologia , Depressão/epidemiologia , Dermatite Atópica/complicações , Qualidade de Vida , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Ansiedade/diagnóstico , Ansiedade/etiologia , Ansiedade/psicologia , Estudos Transversais , Depressão/diagnóstico , Depressão/etiologia , Depressão/psicologia , Dermatite Atópica/diagnóstico , Dermatite Atópica/psicologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Prevalência , Escalas de Graduação Psiquiátrica/estatística & dados numéricos , Autorrelato/estatística & dados numéricos , Índice de Gravidade de Doença , Estados Unidos/epidemiologia , Adulto Jovem
6.
J Eur Acad Dermatol Venereol ; 28(6): 781-9, 2014 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-23638978

RESUMO

BACKGROUND: Subjects with atopic dermatitis (AD) have defects in antimicrobial peptide (AMP) production possibly contributing to an increased risk of infections. In laboratory models, vitamin D can alter innate immunity by increasing AMP production. OBJECTIVE: To determine if AD severity correlates with baseline vitamin D levels, and to test whether supplementation with oral vitamin D alters AMP production in AD skin. METHODS: This was a multi-centre, placebo-controlled, double-blind study in 30 subjects with AD, 30 non-atopic subjects, and 16 subjects with psoriasis. Subjects were randomized to receive either 4000 IU of cholecalciferol or placebo for 21 days. At baseline and day 21, levels of 25-hydroxyvitamin D (25OHD), cathelicidin, HBD-3, IL-13, and Eczema Area and Severity Index (EASI) and Rajka-Langeland scores were obtained. RESULTS: At baseline, 20% of AD subjects had serum 25OHD below 20 ng/mL. Low serum 25OHD correlated with increased Fitzpatrick Skin Type and elevated BMI, but not AD severity. After 21 days of oral cholecalciferol, mean serum 25OHD increased, but there was no significant change in skin cathelicidin, HBD-3, IL-13 or EASI scores. CONCLUSIONS: This study illustrated that darker skin types and elevated BMI are important risk factors for vitamin D deficiency in subjects with AD, and highlighted the possibility that seasonality and locale may be potent contributors to cathelicidin induction through their effect on steady state 25OHD levels. Given the molecular links between vitamin D and immune function, further study of vitamin D supplementation in subjects with AD is warranted.


Assuntos
Colecalciferol/uso terapêutico , Dermatite Atópica/tratamento farmacológico , Suplementos Nutricionais , Vitaminas/uso terapêutico , Adulto , Dermatite Atópica/sangue , Método Duplo-Cego , Feminino , Humanos , Masculino , Índice de Gravidade de Doença , Vitamina D/análogos & derivados , Vitamina D/sangue
7.
Br J Dermatol ; 169(3): 700-3, 2013 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-23600999

RESUMO

BACKGROUND: The increased susceptibility of patients with atopic dermatitis (AD) to disseminated viral skin infections such as eczema herpeticum (ADEH+) is poorly understood. OBJECTIVES: The primary goal of the current study was to determine whether ADEH+ subjects have identifiable defects in cell-mediated immunity that reduce their ability to control viral infections. MATERIALS AND METHODS: In this study, we evaluated cytokine expression by various subsets of peripheral blood mononuclear cells from ADEH+ (n = 24) compared with AD without a history of viral infections (ADEH-) (n = 20) before and after treatment with herpes simplex virus (HSV). RESULTS: We found that interferon (IFN)-γ expression after HSV treatment was lower in the CD8+ T cells and monocytes from patients with ADEH+ compared with patients who are ADEH- or nonatopic. Given the induction of CD8+ T cells as the result of antigen presentation by human leucocyte antigen (HLA) class I, consistent with the findings described above we also found that the HLA B7 allele was significantly associated with risk of the ADEH+ phenotype (odds ratio = 1·91, P = 0·02, 125 ADEH+ and 161 ADEH- subjects). CONCLUSIONS: These data suggest that defects in viral-induced IFN-γ from CD8+ T cells contribute to the ADEH+ phenotype.


Assuntos
Linfócitos T CD8-Positivos/imunologia , Dermatite Atópica/imunologia , Antígeno HLA-B7/imunologia , Imunidade Celular/fisiologia , Interferon gama/biossíntese , Erupção Variceliforme de Kaposi/imunologia , Linfócitos T CD8-Positivos/metabolismo , Estudos de Casos e Controles , Dermatite Atópica/complicações , Frequência do Gene , Antígeno HLA-B7/genética , Humanos , Erupção Variceliforme de Kaposi/complicações , Leucócitos Mononucleares/imunologia , Fenótipo
9.
Br J Dermatol ; 157(2): 378-81, 2007 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-17573885

RESUMO

BACKGROUND: Combination therapy with pimecrolimus cream 1%, a topical calcineurin inhibitor (TCI), and fluticasone propionate cream 0.05% (FP), a mid-potency topical corticosteroid, may have a synergistic effect for treatment of atopic dermatitis (AD) because their mechanism of action differs. OBJECTIVES: To assess the efficacy of concomitant pimecrolimus twice daily/FP once daily vs. vehicle twice daily/FP once daily in patients with severe AD. METHODS: An exploratory, 2-week, double-blind, randomized, within-patient study was conducted (n = 45). Two target areas of similar severity, size and location were assessed. Assessments included the modified Eczema Area and Severity Index (0-12 scale) (primary variable), localized investigator global assessment (0-4 scale) and Patients' Self-Assessment of Disease Severity (0-4 scale). RESULTS: Data for all variables were similar for the TCI/FP and vehicle/FP treatments. CONCLUSIONS: The efficacy observed for treatment of severe AD flares with this TCI/FP combination regimen was equivalent to that of vehicle/FP.


Assuntos
Anti-Inflamatórios/uso terapêutico , Dermatite Atópica/tratamento farmacológico , Fármacos Dermatológicos/uso terapêutico , Tacrolimo/análogos & derivados , Administração Cutânea , Adolescente , Adulto , Idoso , Androstadienos/uso terapêutico , Criança , Pré-Escolar , Método Duplo-Cego , Quimioterapia Combinada , Feminino , Fluticasona , Humanos , Masculino , Pessoa de Meia-Idade , Índice de Gravidade de Doença , Tacrolimo/uso terapêutico , Resultado do Tratamento
10.
Allergy ; 61(8): 969-87, 2006 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-16867052

RESUMO

There are remarkable differences in the diagnostic and therapeutic management of atopic dermatitis practiced by dermatologists and pediatricians in different countries. Therefore, the European Academy of Allergy and Clinical Immunology and the American Academy of Allergy, Asthma and Immunology nominated expert teams who were given the task of finding a consensus to serve as a guideline for clinical practice in Europe as well as in North America. The consensus report is part of the PRACTALL initiative, which is endorsed by both academies.


Assuntos
Dermatite Atópica/diagnóstico , Dermatite Atópica/imunologia , Dermatite Atópica/terapia , Adulto , Criança , Pré-Escolar , Europa (Continente) , Feminino , Humanos , Masculino , Sociedades Médicas , Estados Unidos
12.
J Allergy Clin Immunol ; 108(2): 269-74, 2001 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-11496245

RESUMO

BACKGROUND: Staphylococcus aureus colonizes the skin lesions of more than 90% of patients with atopic dermatitis (AD). The mechanism for increased S aureus colonization in AD is unknown. However, the initial event in colonization requires adherence of S aureus to the skin. OBJECTIVE: The purpose of this study was to examine the roles of various bacterial adhesins on S aureus binding to AD skin. METHODS: In an attempt to delineate the mechanism behind this adherence process, an in vitro bacterial binding assay was developed to quantitate the adherence of various S aureus strains to AD, psoriatic, and normal skin sections. S aureus strains used in this study were obtained either from cultures of AD skin lesions or from genetically manipulated strains of S aureus that lacked specific microbial surface components recognizing adhesive matrix molecules (MSCRAMMs)--namely, fibronectin-binding protein (Fnbp), fibrinogen-binding protein (Clf), collagen-binding protein (Cna), and their parent strains. In addition, S aureus strains from patients with AD were pretreated with fibronectin or fibrinogen to block MSCRAMM receptors and interfere with binding. RESULTS: Under all experimental conditions, binding of S aureus was localized primarily to the stratum corneum. Immunocytochemical staining of AD skin sections showed a redistribution of fibronectin to the cornified layer, an observation not seen in normal skin. S aureus binding to uninvolved AD skin was significantly greater than the binding to uninvolved psoriatic skin (P <.0001) and normal skin (P <.0005). The Fnbp-negative S aureus showed a significant reduction in binding to the AD skin (P <.0001) but not to the psoriatic and normal skin. In the AD skin, a significant reduction in the binding of S aureus was also observed in the Clf-negative strain (P <.0001) but not in the Cna-negative S aureus. Preincubation of S aureus with either fibronectin or fibrinogen also inhibited bacterial binding to AD skin (P <.0001). CONCLUSION: These data suggest that fibronectin and fibrinogen--but not collagen--play a major role in the enhanced binding of S aureus to the skin of patients with AD.


Assuntos
Aderência Bacteriana/fisiologia , Dermatite Atópica/complicações , Fibrinogênio/metabolismo , Fibronectinas/metabolismo , Infecções Cutâneas Estafilocócicas/etiologia , Moléculas de Adesão Celular , Proteínas da Matriz Extracelular , Humanos , Psoríase/complicações , Staphylococcus aureus/genética
13.
Semin Cutan Med Surg ; 20(4): 217-25, 2001 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-11770908

RESUMO

Atopic dermatitis is a common, chronic inflammatory skin disease that frequently predates the development of asthma and/or allergic rhinoconjunctivitis. Recent studies have provided new insights into how the complex interrelationship of genetic, environmental, and immunologic factors may contribute to the development of atopic dermatitis. This article examines some of the factors involved in chronic cutaneous inflammation in this disease. Greater understanding of the mechanisms that underlie the pathophysiology of atopic dermatitis may lead to improved treatment strategies for this increasingly common skin disease.


Assuntos
Dermatite Atópica/imunologia , Dermatite Atópica/fisiopatologia , 3',5'-AMP Cíclico Fosfodiesterases/metabolismo , Autoantígenos/sangue , Calcineurina/imunologia , Inibidores de Calcineurina , Doença Crônica , Citocinas/genética , Citocinas/imunologia , Dermatite Atópica/enzimologia , Humanos , Imunoglobulina E/sangue , Células de Langerhans/imunologia , Fatores de Risco , Staphylococcus aureus/patogenicidade , Linfócitos T/imunologia
14.
J Allergy Clin Immunol ; 105(5): 1002-7, 2000 May.
Artigo em Inglês | MEDLINE | ID: mdl-10808183

RESUMO

BACKGROUND: Atopic dermatitis (AD) is a chronic inflammatory skin disease associated with tissue eosinophilia and the activation of T lymphocytes. The novel eosinophil chemoattractants, eotaxin and monocyte chemotactic protein (MCP)-4, are up-regulated at sites of allergic inflammation, yet their contribution to the pathophysiologic mechanisms of AD remains to be determined. OBJECTIVE: We sought to investigate the expression of eotaxin and MCP-4 in acute and chronic lesions from patients with AD and to determine their relationship to the numbers of resident inflammatory cells. METHODS: With use of in situ hybridization, the expression of eotaxin and MCP-4 messenger RNA (mRNA) in skin biopsy specimens from patients with acute and chronic AD skin lesions was compared with that of uninvolved skin from these patients and skin from healthy volunteers. RESULTS: There was a constitutive expression of eotaxin and MCP-4 mRNA in skin biopsy specimens from healthy subjects. Positive signal for chemokine mRNA was observed both within the epidermis and inflammatory cells (macrophages, eosinophils, and T cells) of the subepidermis in AD skin lesions. Within the subepithelium acute and chronic skin lesions exhibited a significant increase in the numbers of eotaxin and MCP-4 mRNA-positive cells compared with uninvolved skin (P <.01), whereas the numbers of eotaxin and MCP-4 mRNA-positive cells were significantly higher in chronic AD compared with acute AD skin lesions (P <.005, P <.001, respectively). Correlations were observed between the expression of eotaxin and MCP-4 mRNA and the presence of eosinophils and macrophages, respectively, in AD lesions (r(2) = 0.84, r(2) = 0.94). CONCLUSION: There is an increased expression of eotaxin and MCP-4 in acute and chronic lesions, suggesting that these chemotactic factors play a major role in the pathophysiologic mechanisms of AD.


Assuntos
Quimiocinas CC , Citocinas/genética , Dermatite Atópica/genética , Dermatite Atópica/metabolismo , Proteínas Quimioatraentes de Monócitos/genética , Biópsia , Quimiocina CCL11 , Quimiocinas/genética , Fatores Quimiotáticos de Eosinófilos/genética , Humanos , RNA Mensageiro/metabolismo , Pele/patologia
15.
Nurse Pract Forum ; 10(2): 48-55, 1999 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-10542581

RESUMO

Atopic dermatitis is a chronic, relapsing inflammatory pruritic skin disease commonly associated with respiratory allergy. The keys to successful management of this disease continue to include accurate diagnosis, hydration of the skin, control of pruritus and infections, appropriate use of topical corticosteroids and emollients, and identification and elimination of exacerbating factors. Treatment can be complicated and educating the patient regarding disease and therapy is critical for success.


Assuntos
Dermatite Atópica/diagnóstico , Dermatite Atópica/terapia , Higiene da Pele/métodos , Administração Cutânea , Anti-Inflamatórios/uso terapêutico , Criança , Dermatite Atópica/complicações , Dermatite Atópica/imunologia , Diagnóstico Diferencial , Emolientes/uso terapêutico , Humanos , Educação de Pacientes como Assunto , Higiene da Pele/enfermagem , Esteroides
16.
J Allergy Clin Immunol ; 102(4 Pt 1): 637-44, 1998 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-9802373

RESUMO

BACKGROUND: A topical formulation of tacrolimus, an immunosuppressant currently marketed for the prevention of rejection after solid organ transplant, is a potential therapeutic agent for atopic dermatitis. OBJECTIVE: We sought to determine the safety and efficacy of tacrolimus ointment in pediatric patients with moderate-to-severe atopic dermatitis. METHODS: In this double-blind, vehicle-controlled multicenter trial, children ages 7 to 16 years were treated with twice daily application of tacrolimus ointment at 1 of 3 concentrations (0.03% [n = 43], 0.1% [n = 49], or 0.3% [n = 44]) or vehicle (n = 44) for up to 22 days, with a 2-week follow-up period. RESULTS: The Physician's Global Evaluation of clinical response showed that 69% (95% confidence interval: 53-82) of patients in the 0.03% tacrolimus ointment group, 67% (95% confidence interval: 52-81) in the 0.1% tacrolimus ointment group, and 70% (95% confidence interval: 54-83) in the 0.3% tacrolimus ointment group, compared with 38% (95% confidence interval: 24-54) in the vehicle group, had a marked to excellent (> or =75%) improvement or clearing of their atopic dermatitis (P =.005, .007, and .004, respectively for the 3 tacrolimus groups compared with the vehicle group). The mean percent improvement for a modified Eczema Area and Severity Index at end of treatment for each of the 3 tacrolimus groups (0.03%, 72%; 0.1%, 77%: and 0.3%, 81%) was significantly better than that of the vehicle group (26%; P <.001). The median percent reduction in pruritus was significantly greater for tacrolimus-treated patients (74% to 89%) than for vehicle-treated patients (51%, P = .027). No serious systemic adverse events were noted, and systemic absorption was minimal. CONCLUSION: Tacrolimus ointment appears to be safe and effective in children with atopic dermatitis.


Assuntos
Dermatite Atópica/tratamento farmacológico , Imunossupressores/uso terapêutico , Tacrolimo/uso terapêutico , Administração Tópica , Adolescente , Criança , Método Duplo-Cego , Feminino , Humanos , Imunossupressores/administração & dosagem , Masculino , Tacrolimo/administração & dosagem , Tacrolimo/sangue , Resultado do Tratamento
17.
J Allergy Clin Immunol ; 102(4 Pt 1): 645-50, 1998 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-9802374

RESUMO

BACKGROUND: The mechanisms involved in the initiation and the maintenance of skin inflammation in atopic dermatitis (AD) are poorly understood. Previous studies have demonstrated increased numbers of infiltrating CD4+ T cells in acute lesions compared with normal control skin. IL-16 is a cytokine that has selective chemotactic activity for CD4+ cells. OBJECTIVE: We sought to examine whether IL-16 expression might be upregulated in acute versus chronic AD. METHODS: We investigated the expression of IL-16 mRNA in skin biopsy specimens from acute and chronic skin lesions, as well as from the uninvolved skin of patients with AD and normal skin. Cryostat sections from 4% paraformaldehyde-fixed skin biopsy specimens were processed for in situ hybridization by using cRNA coding for IL-16 mRNA. Numbers of infiltrating CD4+ and CD8+ cells were also determined by immunocytochemistry. RESULTS: There were positive signals for IL-16 mRNA both in the basal layer of the epidermis and in the dermis of AD skin biopsy specimens from all subjects studied. The numbers of epidermal and dermal IL-16 mRNA+ cells were significantly increased in acute skin lesions compared with chronic (P <.01) and uninvolved (P <.001) skin lesions and compared with normal skin (P <.001). The number of CD4+ cells was significantly increased in acute skin lesions compared with chronic (P <.01) skin lesions and uninvolved skin (P <.01) and compared with normal skin (P <.01). Significant correlations were found between the numbers of CD4+ cells and the numbers of epidermal (r = 0.82, P <.001) and dermal (r = 0.71, P <.001) IL-16 mRNA+ cells. CONCLUSION: The results demonstrate that upregulation of IL-16 mRNA expression in acute AD is associated with increased numbers of CD4+ cells, suggesting that IL-16 may play a role in the initiation of skin inflammation, presumably through recruitment of CD4+ cells.


Assuntos
Linfócitos T CD4-Positivos/imunologia , Dermatite Atópica/genética , Dermatite Atópica/imunologia , Expressão Gênica , Interleucina-16/genética , Biópsia , Humanos , Imuno-Histoquímica , Hibridização In Situ , RNA Mensageiro/metabolismo , Pele/imunologia , Pele/patologia
18.
J Allergy Clin Immunol ; 102(2): 245-50, 1998 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-9723668

RESUMO

BACKGROUND: Atopic dermatitis (AD) is a chronic inflammatory skin disease with immunopathologic features that vary depending on the duration of the lesion. Acute lesions are associated with a T-cell infiltrate and a high expression of IL-4 mRNA compared with chronic lesions, uninvolved AD skin, or skin from normal control subjects. Chronic lesions are rich in eosinophils and monocyte/macrophages and contain a greater number of IL-5, granulocyte-macrophage colony-stimulating factor (GM-CSF), and IL-12 (p40) mRNA-positive cells. OBJECTIVES: In this study, we investigated the mRNA expression of the IL-4 receptor (IL-4Ralpha), IL-5Ralpha, GM-CSFRalpha, and IL-12Rbeta2 in biopsy specimens from acute and chronic AD lesions, uninvolved AD skin, normal skin, and psoriatic skin lesions. METHODS: Cytokine receptor mRNA was examined in paraformaldehyde-fixed biopsy specimens with in situ hybridization with specific antisense riboprobes. RESULTS: Acute and chronic skin lesions exhibited a significant increase in numbers of IL-5Rbeta and GM-CSFRalpha mRNA-positive cells compared with uninvolved AD skin and normal skin (P < .001). Chronic skin lesions had a significantly greater number of IL-5Ralpha and GM-CSFRalpha mRNA-positive cells when compared with acute AD skin (P < .001). In contrast, IL-4Ralpha mRNA expression was increased in acute but not chronic AD lesions compared with uninvolved and normal skin (P < .001). No significant differences were observed in numbers of IL-12Rbeta2 mRNA-positive cells when comparing acute AD, chronic AD, uninvolved AD, and normal skin. In psoriatic skin, the numbers of GM-CSFRalpha and IL-12Rbeta2 mRNA-positive cells were significantly increased compared with acute AD lesions, uninvolved skin, and normal control skin (P < .01). CONCLUSIONS: These results demonstrate that acute AD is associated with a high expression of IL-4Ralpha, whereas IL-5Ralpha and GM-CSFRalpha mRNA are predominantly increased in chronic AD and to lesser extent in acute lesions. These findings support the biphasic role of IL-4, IL-5, and GM-CSF in the pathophysiology of AD.


Assuntos
Dermatite Atópica/imunologia , Receptores de Citocinas/genética , Adulto , Dermatite Atópica/genética , Dermatite Atópica/patologia , Expressão Gênica , Humanos , Pessoa de Meia-Idade , RNA Mensageiro , Receptores de Citocinas/biossíntese , Receptores de Fator Estimulador das Colônias de Granulócitos e Macrófagos/genética , Receptores de Interleucina/genética , Receptores de Interleucina-12 , Receptores de Interleucina-4/genética , Receptores de Interleucina-5
20.
Surg Endosc ; 11(11): 1088-90, 1997 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-9348380

RESUMO

BACKGROUND: The relationship between severe reactive airway disease (RAD) and gastroesophageal reflux disease (GERD) has been noted but the relationship is poorly understood. This study reports our experience with laparoscopic fundoplication and its effect on the pulmonary status of children with severe steroid-dependent reactive airway disease. METHODS: Fifty-six patients with severe steroid-dependent RAD and medically refractory GERD underwent laparoscopic Nissen fundoplications. Mean age was 7 years and mean weight was 20 kg. All patients had the procedure completed successfully laparoscopically with an average operative time of 62 min. Average hospital stay was 1.6 days. RESULTS: Forty-eight of 56 patients noted significant improvement in their respiratory symptoms in the first week. Fifty of 56 patients have been weaned off their oral steroids and four others have had a greater than 50% decrease in their dose. Sixteen patients had a documented increase in their FEV1 in the initial postoperative period (avg. 26%). CONCLUSION: Patients with steroid-dependent RAD and GERD refractory to medical management show improvement in their respiratory status following fundoplication and the majority can be weaned off of their oral steroids. Laparoscopic techniques allow this procedure to be performed safely even in this high-risk group of patients.


Assuntos
Fundoplicatura/métodos , Refluxo Gastroesofágico/cirurgia , Laparoscopia , Pneumopatias/fisiopatologia , Adolescente , Adulto , Criança , Pré-Escolar , Volume Expiratório Forçado , Refluxo Gastroesofágico/complicações , Refluxo Gastroesofágico/fisiopatologia , Humanos , Lactente , Pneumopatias/etiologia , Testes de Função Respiratória
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...