A influência do tratamento do Helicobacter pylori no paciente com urticária crônica espontânea
The influence of Helicobacter pylori treatment on patients with chronic spontaneous urticaria
Larissa Queiroz Mamede; Laís Souza Gomes; Grazielly Fátima Pereira; Allyne Moura Fé e Sousa Araújo; Amanda Brolio de Souza; Iandra Leite Perez; Luana Pereira Maia; Jorge Kalil; Antônio Abílio Motta; Rosana Câmara Agondi
Resumo
Introdução: A urticária crônica espontânea (UCE) é considerada atualmente uma condição autoimune, onde o mastócito é a célula central e sua ativação envolve a participação de autoanticorpos IgG e/ou IgE. Entretanto, várias outras condições podem estar associadas ao não controle da UCE, como a infecção pelo Helicobacter pylori (Hp), embora os dados na literatura sejam controversos. O objetivo deste estudo foi avaliar a influência do tratamento do Hp no controle clínico da UCE. Métodos: Estudo retrospectivo de prontuários eletrônicos de pacientes com UCE que foram submetidos à pesquisa de Hp devido a sintomas gastroesofágicos. Foram avaliados os dados demográficos e a refratariedade aos anti-histamínicos destes pacientes. Posteriormente, a positividade ao Hp e a influência do tratamento do Hp sobre o controle clínico da UCE também foram avaliados. A UCE foi considerada controlada quando o UAS7 < 6, juntamente com a redução do uso de medicamentos para UCE. Resultados: Foram incluídos 50 pacientes, a maioria do sexo feminino (84%), e com idade média de 56,0 anos. A positividade para o Hp foi observada em 18 pacientes (36%), porém, o tratamento para erradicação do Hp foi realizado em apenas 13 pacientes, e, destes, 9 (69,2%) apresentaram melhora dos sintomas da UCE, avaliados em média 5,6 meses após este tratamento. Não houve associação da infecção pelo Hp com a gravidade da UCE e nem com o tempo de doença. Conclusões: Embora a UCE tenha a autoimunidade como a principal hipótese para ativação do mastócito, outras situações estão associadas ao não controle da UCE, como a infecção pelo Hp. Este estudo encontrou que a frequência de positividade do Hp nos pacientes com UCE foi mais baixa do que a encontrada na literatura, porém, cerca de 70% dos pacientes tratados para erradicação do Hp apresentaram melhora clínica da UCE.
Palavras-chave
Abstract
Introduction: Chronic spontaneous urticaria (CSU) is currently considered an autoimmune disorder, where mast cells are the key cells and their activation is associated with IgG and/ or IgE autoantibodies. However, many other conditions may be associated with uncontrolled CSU, such as Helicobacter pylori (Hp) infection, although the literature is controversial in this regard. The aim of this study was to evaluate the influence of Hp treatment on CSU control. Methods: We retrospectively reviewed the medical records of patients with CSU who underwent Hp screening because of gastroesophageal symptoms. Data on demographics and antihistamine resistance were assessed in these patients. Hp positivity and the influence of Hp treatment on CSU control were also evaluated. CSU was considered controlled if UAS7 <6 and the medication for CSU control was reduced. Results: Fifty patients were included in the study; most were women (84%) and the mean age was 56.0 years. Hp infection was observed in 18 patients (36%), although only 13 were treated for Hp eradication; of these, 9 (69.2%) showed improvement in CSU symptoms, reassessed at a mean of 5.6 months after treatment. There was no association of Hp infection with CSU severity or disease duration. Conclusions: Although the main hypothesis for mast cell activation in CSU is autoimmunity, other conditions are associated with uncontrolled CSU, such as Hp infection. This study found a lower rate of Hp positivity than that reported in the literature, but about 70% of patients with CSU treated for Hp eradication showed clinical improvement.
Keywords
Referências
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Submetido em:
02/12/2019
Aceito em:
17/12/2019
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