Pesquisa | SciELO

ABSTRACT Introduction: Systemic Mastocytosis comprises a group of neoplastic diseases characterized by clonal expansion and infiltration of mast cells into several organs. The diagnosis and treatment of this disease may be challenging for non-specialists. Objective: Make suggestions or recommendations in Systemic Mastocytosis based in a panel of Brazilian specialists. Method and results: An online expert panel with 18 multidisciplinary specialists was convened to propose recommendations on the diagnosis and treatment of Systemic Mastocytosis in Brazil. Recommendations were based on discussions of topics and multiple-choice questions and were graded using the Oxford Centre for Evidence-Based Medicine 2011 Levels of Evidence Chart. Conclusion: Twenty-two recommendations or suggestions were proposed based on a literature review and graded according to the findings.

https://doi.org/10.1016/j.htct.2022.04.006

Clinical features of hereditary angioedema and warning signs (H4AE) for its identification
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Giavina-Bianchi, Pedro

; Aun, Marcelo Vivolo

; Garcia, Juliana Fóes Bianchini

; Gomes, Laís Souza

; Ribeiro, Ana Júlia

; Takejima, Priscila

; Agondi, Rosana Câmara

; Kalil, Jorge

; Motta, Antonio Abilio

Clinics

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2022, Volume 77 elocation 100023

Resumo: En | Texto: En | PDF: En

Abstract Objectives The study describes a case series of hereditary angioedema with C1 Inhibitor Deficiency (C1INH-HAE) in order to corroborate six clinical warning signs “HAAAAE (H4AE)” to enable early identification of this disease. Methods The authors analyzed the C1INH-HAE cohort to analyze the clinical aspects of the present study's patients and corroborate the six clinical warning signs of the Hereditary Angioedema Brazilian Guidelines. Data regarding demographics, the onset of disease, time to diagnosis, frequency of attacks per year, organs involved, triggers, crisis duration and their outcomes, and disease treatment were collected. Then the authors developed an acronym, H4AE, to help healthcare professionals remember the warning signs. Results The authors included 98 patients in the study, with a mean age of 38.1 years, 67.3% being female, and 75.3% with a family history of HAE. HAE diagnosis was delayed, on average, 13.7 years after its initial manifestation. Exploratory laparotomy was reported by 26.9%, and orotracheal intubation by 21.3% of the present study's patients; 61.3% and 30.3% of them were admitted at least once in the hospital and in the intensive care unit, respectively. The authors constructed an acronym “H4AE” with the six warning signs of HAE: Hereditary, recurrent Angioedema, Abdominal pain, Absence of urticaria, Absence of response to antihistamines, Estrogen association. Conclusion C1INH-HAE is still underdiagnosed and associated with high morbidity. The study showed clinical features of this disease, corroborating the warning signs, which may be useful in raising awareness and improving the diagnosis of C1INH-HAE. The authors suggest the acronym “H4AE” to remind the warning signs.

https://doi.org/10.1016/j.clinsp.2022.100023

Efficacy and safety of dupilumab in two adolescents with severe atopic dermatitis
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Giavina-Bianchi, Mara

; Giavina-Bianchi, Pedro

einstein (São Paulo)

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2021, Volume 19 elocation eRC6064

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

RESUMO Relatamos os casos de dois irmãos adolescentes com dermatite atópica grave e que, apesar de pesarem cerca de 40kg, apresentaram boa resposta ao dupilumabe com a dose off-label para indivíduos com 12 anos e peso de 60kg. Ambos já tinham usado ciclosporina, azatioprina, metotrexato e corticoide oral por longos períodos, acrescidos de tratamentos tópicos sem controle adequado da doença. As lesões cutâneas eram constantes e disseminadas, e os irmãos apresentavam infeções de pele frequentes e qualidade de vida muito ruim, com inúmeras consequências físicas e psicossociais, como o abandono da atividade escolar pelo prurido intenso, pela aparência e pelo bullying sofrido. Apresentavam também retardo de crescimento e de desenvolvimento. Em 2018, o dupilumabe, um agente imunobiológico, foi aprovado para o tratamento de dermatite atópica moderada a severa para adultos e, em 2019, ampliado para faixa etária de 12 a 17 anos. Embora já tivesse a aprovação da Agência Nacional de Vigilância Sanitária no Brasil, a apresentação de 200mg (indicada para o peso dos pacientes) não estava disponível, sem previsão de chegada. Assim, pesando os riscos e benefícios da situação de ambos, optamos por tratá-los com dose de adulto (ataque de 600mg por via subcutânea e 300mg por via subcutânea a cada 2 semanas) apesar do baixo peso. Até o momento, eles realizaram oito aplicações, apresentando importante melhora da doença e da qualidade de vida. Não houve efeitos adversos importantes – apenas a piora da conjuntivite alérgica em um deles. Os pacientes e sua família estão muito satisfeitos, e nós avaliamos que a terapia está sendo bem-sucedida.

ABSTRACT We report the cases of two adolescent siblings with severe atopic dermatitis, who, despite weighing approximately 40kg, presented a good response to dupilumab with the off-label dose for individuals aged 12 years and weighing 60kg. Both had already used cyclosporine, azathioprine, methotrexate and oral corticosteroids for long periods, plus topical treatments with no adequate disease control. Skin lesions were constant and widespread, with frequent skin infections and very poor quality of life, with numerous physical and psychosocial consequences, such as dropping out of school activities due to severe itching, appearance and bullying. They also showed delayed growth and development. In 2018, dupilumab, an immunobiological agent, was approved for treatment of moderate to severe atopic dermatitis in adults and, in 2019, extended to the 12-17-year age group. Although it had already been approved by the Brazilian Health Surveillance Agency, the 200mg presentation (indicated for the weight of patients) was not available, with no expected arrival date. Therefore, weighing the risks and benefits of the situation of both, we chose to treat them with an adult dose (loading dose of 600mg subcutaneously, and 300mg subcutaneously every 2 weeks) despite the low weight. So far, they have received eight injections, showing significant improvement of disease and quality of life. There were no major adverse effects, only worsening of allergic conjunctivitis in one of them. The patients and their family are very satisfied, and we believe that the therapy has been successful.

https://doi.org/10.31744/einstein_journal/2021rc6064 319 downloads

Hereditary angioedema: how to approach it at the emergency department?
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Serpa, Faradiba Sarquis

; Mansour, Eli

; Aun, Marcelo Vivolo

; Giavina-Bianchi, Pedro

; Chong Neto, Herberto José

; Arruda, Luisa Karla

; Campos, Regis Albuquerque

; Motta, Antônio Abílio

; Toledo, Eliana

; Grumach, Anete Sevciovic

; Valle, Solange Oliveira Rodrigues

einstein (São Paulo)

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2021, Volume 19 elocation eRW5498

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

RESUMO As crises de angioedema são causas comuns de atendimentos nas emergências, e devido ao potencial de gravidade, é importante que os profissionais que atuam nesses serviços conheçam suas causas e abordagem. Os mecanismos envolvidos no angioedema sem urticas podem ser histaminérgicos ou mediados por bradicinina. As causas mais comuns de angioedema mediado por histamina são alimentos, medicamentos, ferroada de insetos e idiopática. Quando o mediador é a bradicinina, os desencadeantes são os inibidores da enzima conversora de angiotensina e fatores relacionados ao angioedema adquirido com deficiência do inibidor de C1 ou angioedema hereditário que são menos comuns, mas muito importantes pela possibilidade de desfecho fatal. O angioedema hereditário é uma doença rara, caracterizada por crises de edema que acometem o tecido subcutâneo e mucosas de vários órgãos, manifestando-se principalmente por crises de angioedema e dor abdominal. Esse tipo de angioedema não responde ao tratamento usual com adrenalina, anti-histamínicos e corticosteroides. Assim, se não identificados e tratados adequadamente, esses pacientes têm risco de morte por edema de laringe estimado em 25% a 40%. O tratamento do angioedema hereditário mudou drasticamente nos últimos anos, com o desenvolvimento de novos e eficientes fármacos para as crises: inibidor de C1 derivado de plasma, inibidor de C1 recombinante humano, antagonista do receptor B2 da bradicinina (icatibanto) e o inibidor da calicreína (ecalantide). No Brasil, até o momento, estão liberados para uso o inibidor de C1 derivado de plasma e o icatibanto. O manejo correto desses pacientes na emergência evita cirurgias desnecessárias e, principalmente, desfechos fatais.

ABSTRACT Angioedema attacks are common causes of emergency care, and due to the potential for severity, it is important that professionals who work in these services know their causes and management. The mechanisms involved in angioedema without urticaria may be histamine- or bradykinin-mediated. The most common causes of histamine-mediated angioedema are foods, medications, insect sting and idiopathic. When the mediator is bradykinin, the triggers are angiotensin-converting enzyme inhibitors and factors related to acquired angioedema with deficiency of C1-inhibitor or hereditary angioedema, which are less common, but very important because of the possibility of fatal outcome. Hereditary angioedema is a rare disease characterized by attacks of edema that affect the subcutaneous tissue and mucous membranes of various organs, manifesting mainly by angioedema and abdominal pain. This type of angioedema does not respond to the usual treatment with epinephrine, antihistamines and corticosteroids. Thus, if not identified and treated appropriately, these patients have an estimated risk of mortality from laryngeal edema of 25% to 40%. Hereditary angioedema treatment has changed dramatically in recent years with the development of new and efficient drugs for attack management: plasma-derived C1 inhibitor, recombinant human C1-inhibitor, bradykinin B2 receptor antagonist (icatibant), and the kallikrein inhibitor (ecallantide). In Brazil, plasma-derived C1 inhibitor and icatibant have already been approved for use. Proper management of these patients in the emergency department avoids unnecessary surgery and, especially, fatal outcomes.

https://doi.org/10.31744/einstein_journal/2021rw5498 369 downloads

Loss of tolerance 5 days after discontinuing sulphonamide introduced via desensitization in delayed reaction
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Pereira, Amanda Rocha Firmino

; Aun, Marcelo Vivolo

; Kelmann, Nathália Coelho Portilho

; Motta, Antônio Abílio

; Kalil, Jorge

; Giavina-Bianchi, Pedro

einstein (São Paulo)

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2020, Volume 18 elocation eRC5002

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

RESUMO A erupção fixa por drogas é uma reação de hipersensibilidade a medicamento não imediata, caracterizada por placas eritematosas ou violáceas, arredondadas, recorrentes, de bordas bem definidas e que aparecem sempre na mesma localização cada vez que o medicamento culpado é administrado. A prática habitual é evitar a droga envolvida e utilizar um medicamento estruturalmente diferente. Contudo, há situações em que não há terapêutica segura e eficaz. Em tais situações, a dessensibilização é a única opção. Descrevemos o caso de um paciente que apresentou erupção fixa por drogas por sulfametoxazol-trimetoprim, tendo sido submetido à dessensibilização com sucesso, mas necessitou repetição do procedimento duas vezes, por recidiva da reação após reintrodução inadvertida em dose plena. Em reação de hipersensibilidade a medicamento não imediata, a indicação é controversa e não há padronização técnica. Além disso, não se conhece o tempo durante o qual essa tolerância é perdida após a suspensão da droga envolvida. Nas reações não imediatas graves e dos tipos II e III, a dessensibilização está contraindicada. O paciente foi submetido a dessensibilização ao sulfametoxazol-trimetoprim por três vezes − a primeira com recorrência de lesões, e a segunda e terceira sem manifestações, sendo todas concluídas com sucesso e sem uso de pré-medicação.

ABSTRACT The fixed drug eruption is a non-immediate hypersensitivity reaction to drug, characterized by recurrent erythematous or violaceous, rounded, well-defined border plaques, which always appear in the same location every time the culprit drug is administered. The usual practice is to avoid the drug involved and to use a structurally different drug. However, there are situations in which there is no safe and effective therapy. In such situations, desensitization is the only option. We describe the case of a patient who presented fixed eruption due to sulfamethoxazole-trimethoprim, who underwent successful desensitization, but required a repeat procedure twice due to relapse after inadvertent full-dose reintroduction. In non-immediate hypersensitivity reaction to drug, the indication is controversial and there is no technical standardization. Furthermore, the time at which such tolerance is lost after discontinuing the drug involved is unknown. In severe non-immediate reactions of types II and III, desensitization is contraindicated. The patient underwent desensitisation to sulfamethoxazole-trimethoprim three times − the first with recurrence of lesions and the second and third without manifestations, all concluded successfully and with no premedication.

https://doi.org/10.31744/einstein_journal/2020rc5002 470 downloads

COVID-19: como proceder na prática da cirurgia plástica no Brasil. O que sabemos até agora?
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BRITO, BEATRIZ LASSANCE

; ISAAC, CESAR

; NEVES, DENISE PICCIOLI

; GIAVINA-BIANCHI, PEDRO

Revista Brasileira de Cirurgia Plástica

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2020, Volume 35 Nº 4 Páginas 449 - 465

Resumo: En Pt | Texto: En Pt | PDF: En | PDF: Pt

ABSTRACT COVID-19 (coronavirus disease, described in 2019) is an infectious disease caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Most confirmed cases are mild or asymptomatic, but the most severe cases can progress to severe pneumonia with respiratory failure and death. In Brazil, there is a scenario of an exponential increase in cases, making it challenging to identify the source of contagion. We cannot yet specify when the peak of the COVID-19 outbreak will occur in our country or when the numbers of new contaminants and deaths will begin to decrease. So, the most important thing is protection against a virus for which all the details about contagion, transmission, and treatment are not known. The pandemic impacted and modified medical care, especially for surgical specialties, where face-to-face care is essential and cannot be replaced entirely by telemedicine. Thus, this review aimed to compile theoretical and practical aspects regarding the pandemic COVID-19 and its impact on plastic surgery activity routine. Protocols are proposed for resuming our routines, analyzing countries’ experience at an advanced stage of the pandemic.

RESUMO COVID-19 (coronavirus disease, descrito em 2019) é uma doença infecciosa causada pelo coronavírus da síndrome respiratória aguda grave 2 (SARS-CoV-2). A maioria dos casos confirmados é leve ou assintomático, mas os casos mais graves podem evoluir para pneumonia grave com insuficiência respiratória e morte. Atualmente ocorre, no Brasil, um cenário de aumento exponencial de casos, dificultando a identificação da fonte de contágio. Ainda não podemos precisar quando ocorrerá o pico do surto de COVID-19 em nosso país ou quando os números de novos contaminados e óbitos começarão a diminuir. Nesse momento, o mais importante é a proteção contra um vírus do qual não se conhece todos os detalhes sobre contágio, transmissão e tratamento. A pandemia impactou e modificou a assistência médica, principalmente das especialidades cirúrgicas, onde o atendimento presencial é fundamental e não pode ser substituído integralmente pela telemedicina. Assim, o objetivo desta revisão foi compilar aspectos teóricos e práticos referentes à pandemia COVID-19 e seu impacto na rotina da atividade da cirurgia plástica. São propostos protocolos para retomada de nossas rotinas, analisando a experiência de países em fase mais adiantada da pandemia.

https://doi.org/10.5935/2177-1235.2020rbcp0046

Dupilumab in the treatment of severe atopic dermatitis refractory to systemic immunosuppression: case report
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Giavina-Bianchi, Mara Huffenbaecher

; Giavina-Bianchi, Pedro

; Rizzo, Luiz Vicente

einstein (São Paulo)

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2019, Volume 17 Nº 4 elocation eRC4599

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

RESUMO Relatamos o caso de uma paciente com dermatite atópica grave, que mostrou boa resposta ao dupilumabe. Ela já tinha usado dois agentes imunossupressores, a ciclosporina A e o micofenolato de mofetila, para o tratamento da dermatite atópica, sem obter o controle adequado da doença. Ela também vinha fazendo uso de todas as medidas de controle para casos graves da doença: cuidados com o banho, controle ambiental, corticosteroides potentes tópicos e emolientes. Apresentava prurido e lesões cutâneas constantes, infeções de pele frequentes e qualidade de vida ruim. Passou a apresentar depressão devido à sua doença. Recentemente, o dupilumabe, um agente biológico novo, foi aprovado para o tratamento de dermatite atópica moderada a severa em muitos países, incluindo o Brasil. Dupilumabe é um anticorpo monoclonal cujo alvo é a cadeia alfa comum aos receptores da interleucina (IL) 4 e IL-13, duas citocinas envolvidas no perfil de resposta imune Th2, que promove inflamação atópica. De modo pioneiro no Brasil, a paciente iniciou o tratamento, com dose de ataque de 600mg por via subcutânea de dupilumabe e 300mg também por via subcutânea a cada 2 semanas. Até o momento deste relato, ela realizou quatro aplicações, apresentando grande melhora da doença e da qualidade de vida. Não houve efeitos adversos, nem no local da injeção e nem de outro tipo. A paciente e sua família estão muito satisfeitas, e os médicos que a tratam avaliam que a terapia está sendo bem-sucedida. Este relato de caso subsidia o uso de dupilumabe no tratamento da dermatite atópica grave refratária ao uso de imunossupressores.

ABSTRACT Case report of a patient with severe atopic dermatitis who showed a good response to dupilumab. She had already used two immunosuppressive agents, cyclosporine A and mycophenolate mofetil, for the treatment of atopic dermatitis with no proper control of the disease. She had also been taking all measures to control severe cases of the disease: bath and environmental controls, topical potent corticosteroids and emollients. She presented constant pruritus and skin lesions, frequent skin infections e poor quality of life. She also developed depression due to her disease. Recently, dupilumab, a new biological agent, was approved for the treatment of moderate/severe atopic dermatitis in many countries, including Brazil. Dupilumab is a monoclonal antibody with a common alpha chain of interleukin (IL) 4 and IL-13 receptors, two cytokines involved in the Th2 profile immune response that promote atopic inflammation. In a pioneer way in Brazil, the patient initiated the treatment with an attack dose of 600mg subcutaneous of dupilumab and 300mg subcutaneous every other week. Up to now, she has taken four applications, presenting a great improvement of the disease and her quality of life. There were no adverse effects, nor in the injection site nor of other kind. Patient and her family are very satisfied, and the medical team evaluates that the treatment is being well succeed. The case report described here subsidizes the use of dupilumab in the treatment of severe atopic dermatitis refractory to use of immunosuppressive agents.

https://doi.org/10.31744/einstein_journal/2019rc4599 12886 downloads

Increase of 10% in the Rate of Adverse Drug Reactions for Each Drug Administered in Hospitalized Patients
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Ribeiro, Marisa Rosimeire

; Motta, Antonio Abílio

; Marcondes-Fonseca, Luiz Augusto

; Kalil-Filho, Jorge

; Giavina-Bianchi, Pedro

Clinics

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2018, Volume 73 elocation e185

Resumo: En | Texto: En | PDF: En

OBJECTIVE: To assess the risk factors, incidence and severity of adverse drug reactions in in-patients. METHODS: This prospective study evaluated 472 patients treated at a teaching hospital in Brazil between 2010 and 2013 by five medical specialties: Internal Medicine, General Surgery, Geriatrics, Neurology, and Clinical Immunology and Allergy. The following variables were assessed: patient age, gender, comorbidities, family history of hypersensitivity, personal and family history of atopy, number of prescribed drugs before and during hospitalization, hospital diagnoses, days of hospitalization. The patients were visited every other day, and medical records were reviewed by the investigators to detect adverse drug reactions. RESULTS: There were a total of 94 adverse drug reactions in 75 patients. Most reactions were predictable and of moderate severity. The incidence of adverse drug reactions was 16.2%, and the incidence varied, according to the medical specialty; it was higher in Internal Medicine (30%). Antibiotics were the most commonly involved medication. Chronic renal failure, longer hospital stay, greater number of diagnoses and greater number of medications upon admission were risk factors. For each medication introduced during hospitalization, there was a 10% increase in the rate of adverse drug reaction. In the present study, the probability of observing an adverse drug reaction was 1 in 104 patients per day. CONCLUSIONS: Adverse drug reactions are frequent and potentially serious and should be better monitored in patients with chronic renal failure or prolonged hospitalization and especially in those on ‘polypharmacy’ regimens. The rational use of medications plays an important role in preventing adverse drug reactions.

https://doi.org/10.6061/clinics/2018/e185 1948 downloads

Improving the Management of Hereditary Angioedema
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Giavina-Bianchi, Pedro

; Kalil, Jorge

Clinics

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2018, Volume 73 elocation e354

Resumo: En | Texto: En | PDF: En

https://doi.org/10.6061/clinics/2018/e354 741 downloads

10.

Specific questionnaire detects a high incidence of intra-operative hypersensitivity reactions
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Garro, Laila S.

; Aun, Marcelo V.

; Soares, Iracy Sílvia C.

; Ribeiro, Marisa R.

; Motta, Antônio A.

; Kalil, Jorge

; Castells, Mariana C.

; Carmona, Maria José C.

; Giavina-Bianchi, Pedro

Clinics

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2018, Volume 73 elocation e287

Resumo: En | Texto: En | PDF: En

OBJECTIVE: To assess the incidence of intra-operative immediate hypersensitivity reactions and anaphylaxis. METHODS: A cross-sectional observational study was conducted at the Department of Anesthesiology, University of São Paulo School of Medicine, Hospital das Clínicas, São Paulo, Brazil, from January to December 2010. We developed a specific questionnaire to be completed by anesthesiologists. This tool included questions about hypersensitivity reactions during anesthesia and provided treatments. We included patients with clinical signs compatible with immediate hypersensitivity reactions. Hhypersensitivity reactions were categorized according to severity (grades I-V). American Society of Anesthesiologists physical status classification (ASA 1-6) was analyzed and associated with the severity of hypersensitivity reactions. RESULTS: In 2010, 21,464 surgeries were performed under general anesthesia. Anesthesiologists answered questionnaires on 5,414 procedures (25.2%). Sixty cases of intra-operative hypersensitivity reactions were reported. The majority patients (45, 75%) had hypersensitivity reactions grade I reactions (incidence of 27.9:10,000). Fifteen patients (25%) had grade II, III or IV reactions (intra-operative anaphylaxis) (incidence of 7:10,000). No patients had grade V reactions. Thirty patients (50%) were classified as ASA 1. The frequency of cardiovascular shock was higher in patients classified as ASA 3 than in patients classified as ASA 1 or ASA 2. Epinephrine was administered in 20% of patients with grade III hypersensitivity reactions and in 50% of patients with grade II hypersensitivity reactions. CONCLUSIONS: The majority of patients had hypersensitivity reactions grade I reactions; however, the incidence of intra-operative anaphylaxis was higher than that previously reported in the literature. Patients with ASA 3 had more severe anaphylaxis; however, the use of epinephrine was not prescribed in all of these cases. Allergists and anesthesiologists should implement preventive measures to reduce the occurrence of anaphylaxis.

https://doi.org/10.6061/clinics/2018/e287 829 downloads

11.

Brazilian Guidelines for Hereditary Angioedema Management - 2017 Update Part 1: Definition, Classification and Diagnosis
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Giavina-Bianchi, Pedro

; Arruda, Luisa Karla

; Aun, Marcelo V.

; Campos, Regis A.

; Chong-Neto, Herberto J.

; Constantino-Silva, Rosemeire N.

; Fernandes, Fátima R.

; Ferraro, Maria F.

; Ferriani, Mariana P.L.

; França, Alfeu T.

; Fusaro, Gustavo

; Garcia, Juliana F.B.

; Komninakis, Shirley

; Maia, Luana S.M.

; Mansour, Eli

; Moreno, Adriana S.

; Motta, Antonio A.

; Pesquero, João B.

; Portilho, Nathalia

; Rosário, Nelson A.

; Serpa, Faradiba S.

; Solé, Dirceu

; Takejima, Priscila

; Toledo, Eliana

; Valle, Solange O.R.

; Veronez, Camila L.

; Grumach, Anete S.

Clinics

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2018, Volume 73 elocation e310

Resumo: En | Texto: En | PDF: En

Hereditary angioedema is an autosomal dominant disease characterized by recurrent angioedema attacks with the involvement of multiple organs. The disease is unknown to many health professionals and is therefore underdiagnosed. Patients who are not adequately diagnosed and treated have an estimated mortality rate ranging from 25% to 40% due to asphyxiation by laryngeal angioedema. Intestinal angioedema is another important and incapacitating presentation that may be the main or only manifestation during an attack. In this article, a group of experts from the “Associação Brasileira de Alergia e Imunologia (ASBAI)” and the “Grupo de Estudos Brasileiro em Angioedema Hereditário (GEBRAEH)” has updated the Brazilian guidelines for the diagnosis and treatment of hereditary angioedema.

https://doi.org/10.6061/clinics/2018/e310 1717 downloads

12.

Omalizumab in patients with severe uncontrolled asthma: well-defined eligibility criteria to promote asthma control
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Carvalho-Pinto, Regina Maria de

; Agondi, Rosana Câmara

; Giavina-Bianchi, Pedro

; Cukier, Alberto

; Stelmach, Rafael

Jornal Brasileiro de Pneumologia

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Dez 2017, Volume 43 Nº 6 Páginas 487 - 489

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

https://doi.org/10.1590/s1806-37562017000000012 2129 downloads

13.

Sensitization by subcutaneous route is superior to intraperitoneal route in induction of asthma by house dust mite in a murine mode
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Aun, Marcelo Vivolo

; Saraiva-Romanholo, Beatriz Mangueira

; Almeida, Francine Maria de

; Brüggemann, Thayse Regina

; Kalil, Jorge

; Martins, Milton de Arruda

; Arantes-Costa, Fernanda Magalhães

; Giavina-Bianchi, Pedro

einstein (São Paulo)

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Dez 2015, Volume 13 Nº 4 Páginas 560 - 566

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

RESUMO Objetivo Desenvolver um novo modelo experimental de doença pulmonar alérgica crônica por ácaro, com proeminente produção de imunoglobulina E (IgE) específica, infiltrado inflamatório eosinofílico nas vias aéreas e remodelamento, comparando duas vias diferentes de sensibilização. Métodos O protocolo teve duração de 30 dias. Camundongos BALB/c foram divididos em seis grupos submetidos à sensibilização por via subcutânea ou intraperitoneal com solução salina (controles negativos),Dermatophagoides pteronyssinus (Der p) 50 ou 500mcg, em três aplicações. Posteriormente, foram submetidos à provocação intranasal com Der p ou salina por 7 dias e sacrificados 24 horas após o último desafio. Avaliamos a titulação de IgE específica anti-Der p, densidade eosinofílica no espaço peribroncovascular e remodelamento das vias aéreas. Resultados Tanto os animais sensibilizados por via subcutânea como intraperitoneal produziram IgE específica anti-Der p. Ocorreu aumento da eosinofilia peribroncovascular apenas nos animais que receberam menor dose de Der p. Porém apenas o grupo sensibilizado com Der p 50mcg subcutânea apresentou remodelamento significativo das vias aéreas. Conclusão Neste modelo murino de asma, as duas vias de sensibilização levaram à produção de IgE específica e eosinofilia nas vias aéreas. No entanto, apenas a via subcutânea foi capaz de induzir ao remodelamento. Além disso, doses menores de Der p utilizadas foram superiores às mais elevadas, sugerindo tolerância. Mais estudos são necessários para avaliar a eficácia deste modelo no desenvolvimento da hiperresponsividade brônquica, mas ele pode ser replicado em experimentos para criação de novas estratégias terapêuticas medicamentosas ou imunoterápicas.

ABSTRACT Objective To develop a new experimental model of chronic allergic pulmonary disease induced by house dust mite, with marked production of specific immunoglobulin E (IgE), eosinophilic inflammatory infiltrate in the airways and remodeling, comparing two different routes of sensitization. Methods The protocol lasted 30 days. BALB/c mice were divided into six groups and were sensitized subcutaneously or intraperitoneally with saline (negative control), Dermatophagoides pteronyssinus (Der p) 50 or 500mcg in three injections. Subsequently they underwent intranasal challenge with Der p or saline for 7 days and were sacrificed 24 hours after the last challenge. We evaluated the titration of specific IgE anti-Der p, eosinophilic density in peribronchovascular space and airway remodeling. Results Both animals sensitized intraperitoneally and subcutaneously produced specific IgE anti-Der p. Peribronchovascular eosinophilia increased only in mice receiving lower doses of Der p. However, only the group sensitized with Der p 50mcg through subcutaneously route showed significant airway remodeling. Conclusion In this murine model of asthma, both pathways of sensitization led to the production of specific IgE and eosinophilia in the airways. However, only the subcutaneously route was able to induce remodeling. Furthermore, lower doses of Der p used in sensitization were better than higher ones, suggesting immune tolerance. Further studies are required to evaluate the efficacy of this model in the development of bronchial hyperresponsiveness, but it can already be replicated in experiments to create new therapeutic drugs or immunotherapeutic strategies.

https://doi.org/10.1590/S1679-45082015AO3389 3787 downloads

14.

Brazilian guidelines for the diagnosis and treatment of hereditary angioedema
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Giavina-Bianchi, Pedro

; França, Alfeu T.

; Grumach, Anete S.

; Motta, Abílio A

; Fernandes, Fátima R

; Campos, Regis A.

; Valle, Solange O

; Rosário, Nelson A

; Sole, Dirceu

Clinics

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2011, Volume 66 Nº 9 Páginas 1627 - 1636

Resumo: En | Texto: En | PDF: En

Hereditary angioedema is an autosomal dominant disease characterized by edema attacks with multiple organ involvement. It is caused by a quantitative or functional deficiency of the C1 inhibitor, which is a member of the serine protease inhibitor family. Hereditary angioedema is unknown to many health professionals and is therefore an underdiagnosed disease. The causes of death from hereditary angioedema include laryngeal edema with asphyxia. The estimated mortality rate in patients in whom the disease goes undetected and who are therefore incorrectly treated is 25-40%. In addition to edema of the glottis, hereditary angioedema often results in edema of the gastrointestinal tract, which can be incapacitating. Patients with hereditary angioedema may undergo unnecessary surgical interventions because the digestive tract can be the primary or only organ system involved, thus mimicking acute surgical abdomen. It is estimated that patients with hereditary angioedema experience some degree of disability 20-100 days per year. The Experts in Clinical Immunology and Allergy of the "Associação Brasileira de Alergia e Imunopatologia -ASBAI" developed these guidelines for the diagnosis, therapy, and management of hereditary angioedema.

5113 downloads Citado 3 vezes em SciELO

15.

Respiratory exercise program for elderly individuals with asthma
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Gomieiro, Ludmila Tais Yazbek

; Nascimento, Andréia

; Tanno, Luciana Kase

; Agondi, Rosana

; Kalil, Jorge

; Giavina-Bianchi, Pedro

Clinics

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2011, Volume 66 Nº 7 Páginas 1163 - 1169

Resumo: En | Texto: En | PDF: En

INTRODUCTION: Asthma in older adults is frequently underdiagnosed, as reflected by approximately 60% of asthma deaths occurring in people older than age 65. OBJECTIVE: The present study evaluates the effects of a respiratory exercise program tailored for elderly individuals with asthma. We are not aware of any other reports examining breathing exercises in this population. METHODS: Fourteen patients concluded the 16-week respiratory exercise program. All the patients were evaluated with regard to lung function, respiratory muscle strength, aerobic capacity, quality of life and clinical presentation. RESULTS: After 16 weeks of this open-trial intervention, significant increases in maximum inspiratory pressure and maximum expiratory pressure (27.6% and 20.54%, respectively) were demonstrated. Considerable improvement in quality of life was also observed. The clinical evaluations and daily recorded-symptoms diary also indicated significant improvements and fewer respiratory symptoms. A month after the exercises were discontinued, however, detraining was observed. DISCUSSION: In conclusion, a respiratory exercise program increased muscle strength and was associated with a positive effect on patient health and quality of life. Therefore, a respiratory training program could be included in the therapeutic approach in older adults with asthma.

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