FABIO FERNANDES MORATO CASTRO

(Fonte: Lattes)
Índice h a partir de 2011
14
Lattes
ResearcherID
ORCID
Projetos de Pesquisa
Unidades Organizacionais
FM, Faculdade de Medicina
Departamento de Clínica Médica, Faculdade de Medicina - Docente
LIM/60 - Laboratório de Imunologia Clínica e Alergia, Hospital das Clínicas, Faculdade de Medicina - Líder

Filtros

Mostrar mais
Limpar filtros

Configurações

Tipo de produção: article ×

Resultados de Busca

Agora exibindo 1 - 10 de 29
  • article 3 Citação(ões) na Scopus
    Sensitization to cat allergen and its association with respiratory allergies: cross-sectional study
    (2017) GALVAO, Clovis Eduardo Santos; GRAUDENZ, Gustavo Silveira; KALIL, Jorge; CASTRO, Fabio Fernandes Morato
    Cats are a significant source of allergens that contribute towards worsening of allergic diseases. The aim of this study was to investigate the association between sensitization to cat allergens and allergic respiratory diseases. This was an observational retrospective study based on the skin prick tests results of patients at a tertiary-level hospital in Sao Paulo. A total of 1,985 test results were assessed. The prevalence of sensitization to cat allergen was 20% (399 patients). Our data indicated that in this population of atopic patients, a positive skin prick test result for cat allergen was not associated significantly with a diagnosis of respiratory allergy.
  • article 36 Citação(ões) na Scopus
    The international survey on the management of allergic rhinitis by physicians and patients (ISMAR)
    (2015) BAENA-CAGNANI, Carlos E.; CANONICA, Giorgio W.; HELAL, Mohamed Zaky; GOMEZ, Rene Maximiliano; COMPALATI, Enrico; ZERNOTTI, Mario E.; SANCHEZ-BORGES, Mario; CASTRO, Fabio F. Morato; AGUTTES, Margarita Murrieta; LOPEZ-GARCIA, Aida; TADROS, Faheem A.
    Epidemiologic studies suggest that the prevalence of allergic rhinitis (AR) is rising worldwide. Several reports, in fact, indicate increasing trends in the prevalence of AR especially in developing countries, likely related to the environment and climate changes and the adoption of an urbanized Western lifestyle. The primary objective of the present study was to collect information about management in real-life settings, including a characterization of typical patients' profile referring to physicians, the disease features, the common approaches to diagnostic assessments and therapeutic decisions. This was an international, multicenter, cross-sectional study conducted in adults or children (>= 6 years) suffering from rhinitis confirmed by physician's diagnosis for at least one year. The 234 physicians who participated in the study included a total of 2778 patients in Egypt, Mexico, Brazil, Colombia, Guatemala, Iran, Venezuela, Argentina, Israel, Kuwait and United Arab Emirates. It was found that clinical history was the selected tool to diagnose and categorize AR patients (97.1%), with less than half of patients undergoing allergy testing, may be explaining the scarce use of immunotherapy on management of disease. Out of 2776 patients, 93.4% had somehow received a recommendation to avoid allergens and irritant agent exposure. Notably, 91.4% were receiving at least one treatment at the time of the survey, mostly oral antihistamines (79.7%) and intranasal corticosteroids (66.3%). Oral antihistamines, intranasal steroids and decongestants were considered both safe and effective by patients and physicians, preferring oral and nasal route of administration. The ISMAR registry was designed according to the most accepted epidemiological recommendations, and provides interesting information regarding the management of rhinitis from a patient and physician points of view, with many similarities between the participating countries. Further efforts are required to better manage AR and its comorbidities.
  • article 2 Citação(ões) na Scopus
    IgE and IgG4 Epitopes of Dermatophagoides and Blomia Allergens before and after Sublingual Immunotherapy
    (2023) FIGO, Daniele Danella; MACEDO, Priscilla Rios Cordeiro; GADERMAIER, Gabriele; REMUZGO, Cesar; CASTRO, Fabio Fernandes Morato; KALIL, Jorge; GALVAO, Clovis Eduardo Santos; SANTOS, Keity Souza
    Sublingual immunotherapy (SLIT) is used worldwide to treat house dust mites (HDM) allergy. Epitope specific immunotherapy with peptide vaccines is used far less, but it is of great interest in the treatment of allergic reactions, as it precludes the drawbacks of allergen extracts. The ideal peptide candidates would bind to IgG, blocking IgE-binding. To better elucidate IgE and IgG4 epitope profiles during SLIT, sequences of main allergens, Der p 1, 2, 5, 7, 10, 23 and Blo t 5, 6, 12, 13, were included in a 15-mer peptide microarray and tested against pooled sera from 10 patients pre- and post-1-year SLIT. All allergens were recognized to some extent by at least one antibody isotype and peptide diversity was higher post-1-year SLIT for both antibodies. IgE recognition diversity varied among allergens and timepoints without a clear tendency. Der p 10, a minor allergen in temperate regions, was the molecule with more IgE-peptides and might be a major allergen in populations highly exposed to helminths and cockroaches, such as Brazil. SLIT-induced IgG4 epitopes were directed against several, but not all, IgE-binding regions. We selected a set of peptides that recognized only IgG4 or were able to induce increased ratios of IgG4:IgE after one year of treatment and might be potential targets for vaccines.
  • article 13 Citação(ões) na Scopus
    Eosinophilic Esophagitis: Latent Disease in Patients with Anaphylactic Reaction to Cow's Milk
    (2018) BARBOSA, Adriana C.; CASTRO, Fabio Morato; MEIRELES, Paula Rezende; ARRUDA, L. Karla; CARDOSO, Silvia Regina; KALIL, Jorge; YANG, Ariana C.
    BACKGROUND: Food allergy and eosinophilic esophagitis are a substantial and evolving public health issue. Clinicians should know the relationship between these diseases and how one may predispose to the other. This can help minimize misdiagnosis. OBJECTIVE: The objective of this study was to assess esophageal eosinophilia and eosinophilic esophagitis frequency in patients with persistent cow's milk allergy and anaphylaxis manifestations. METHODS: Patients with persistent cow's milk allergy with anaphylaxis manifestations were enrolled from 2012 through 2016 at the Sao Paulo University Hospital, Brazil. All of them were submitted to endoscopy despite the presence or absence of gastrointestinal symptoms. Demographics data, atopic comorbidities, medication use, endoscopic findings, and esophageal eosinophilia frequency were evaluated. RESULTS: Eighty-nine patients were selected. The median age was 8 years. It was observed that 34 of 89 patients (38.2%; 95% confidence interval [CI]: 28.14%-49.16%) presented with esophageal eosinophilia. Five patients (7.1%) presented proton pump inhibitor-responsive esophageal eosinophilia, and 10 patients (14.2%) presented eosinophilic esophagitis. We found that 29.4% were asymptomatic patients, 23.5% had nonspecific symptoms, 23.5% had persistent typical symptoms, and 23.5% had intermittent typical symptoms. There was an association with inflammatory endoscopy findings in 21 patients (61.7%). CONCLUSIONS: This description demands scientific attention because it is the highest frequency of esophageal eosinophilia yet described in a group of patients with cow's milk allergy presenting with anaphylaxis. Eosinophilic esophagitis is a condition that can coexist ""silently"" with an IgE-mediated food allergy and is most often underestimated and under-diagnosed. (C) 2017 American Academy of Allergy, Asthma & Immunology
  • article 15 Citação(ões) na Scopus
    Recessive NLRC4-Autoinflammatory Disease Reveals an Ulcerative Colitis Locus
    (2022) STEINER, Annemarie; REYGAERTS, Thomas; PONTILLO, Alessandra; CECCHERINI, Isabella; MOECKING, Jonas; MOGHADDAS, Fiona; DAVIDSON, Sophia; CAROLI, Francesco; GROSSI, Alice; CASTRO, Fabio Fernandes Morato; KALIL, Jorge; GOHR, Florian N.; I, Florian Schmidt; BARTOK, Eva; ZILLINGER, Thomas; HARTMANN, Gunther; GEYER, Matthias; GATTORNO, Marco; MENDONCA, Leonardo Oliveira; MASTERS, Seth L.
    Purpose NLRC4-associated autoinflammatory disease (NLRC4-AID) is an autosomal dominant condition presenting with a range of clinical manifestations which can include macrophage activation syndrome (MAS) and severe enterocolitis. We now report the first homozygous mutation in NLRC4 (c.478G > A, p.A160T) causing autoinflammatory disease with immune dysregulation and find that heterozygous carriers in the general population are at increased risk of developing ulcerative colitis. Methods Circulating immune cells and inflammatory markers were profiled and historical clinical data interrogated. DNA was extracted and sequenced using standard procedures. Inflammasome activation assays for ASC speck formation, pyroptosis, and IL-1 beta/IL-18 secretion confirmed pathogenicity of the mutation in vitro. Genome-wide association of NLRC4 (A160T) with ulcerative colitis was examined using data from the IBD exomes portal. Results A 60-year-old Brazilian female patient was evaluated for recurrent episodes of systemic inflammation from six months of age. Episodes were characterized by recurrent low-grade fever, chills, oral ulceration, uveitis, arthralgia, and abdominal pain, followed by diarrhea with mucus and variable skin rash. High doses of corticosteroids were somewhat effective in controlling disease and anti-IL-1 beta therapy partially controlled symptoms. While on treatment, serum IL-1 beta and IL-18 levels remained elevated. Genetic investigations identified a homozygous mutation in NLRC4 (A160T), inherited in a recessive fashion. Increased ASC speck formation and IL-1 beta/IL-18 secretion confirmed pathogenicity when NLRC4 (A160T) was analyzed in human cell lines. This allele is significantly enriched in patients with ulcerative colitis: OR 2.546 (95% 1.778-3.644), P = 0.01305. Conclusion NLRC4 (A160T) can either cause recessively inherited autoinflammation and immune dysregulation, or function as a heterozygous risk factor for the development of ulcerative colitis.
  • article 14 Citação(ões) na Scopus
    Novel allergens from ancient foods: Man e 5 from manioc (Manihot esculenta Crantz) cross reacts with Hev b 5 from latex
    (2013) SANTOS, Keity Souza; GADERMAIER, Gabriele; VEJVAR, Eva; ARCURI, Helen Andrade; GALVAO, Clovis Eduardo; YANG, Ariana Campos; RESENDE, Virginia Maria Ferreira; MARTINS, Carlo de Oliveira; HIMLY, Martin; MARI, Adriano; LISO, Marina; POMPONI, Debora; BREITENEDER, Heimo; WAGNER, Stefan; KALIL, Jorge; FERREIRA, Fatima; CASTRO, Fabio Fernandes Morato
    Scope Manioc (Manihot esculenta) is a tuber mainly consumed in the Southern Hemisphere and used worldwide by food and chemistry industry. We aimed to recombinantly produce and characterize the first manioc allergen and evaluate its IgE reactivity in sera of Brazilian and Italian patients. Methods and results The molecule, termed Man e5, was expressed in E. coli, characterized by amino acid analysis, mass spectrometry, circular dichroism, HPLC, and dynamic light scattering. A tertiary structural model of the protein was produced using bioinformatics and susceptibility to pepsin digestion was analyzed in vitro. Based on its high content of charged residues, heat stability, flexibility and lack of secondary structure elements, the allergen was determined a member of the intrinsically disordered protein family. Brazilian patients were selected based on manioc allergy and Italians based on latex allergy and sensitization to Hev b 5.71% of Brazilians and 40% of Italians were in vitro IgE positive to Man e5. Cross-inhibition assays suggest a possible involvement of this allergen in the latex-fruit syndrome. Conclusion Man e5, the first purified allergen from manioc demonstrates IgE cross-reactivity with Hev b 5. Data suggest Hev b 5 might act as primary sensitizer and could therefore lead to allergic manifestations upon manioc consumption without prior exposition.
  • article 4 Citação(ões) na Scopus
    Evaluating the impacts of relaxation and mutation in the SARS-CoV-2 on the COVID-19 epidemic based on a mathematical model: a case study of Sao Paulo State (Brazil)
    (2021) YANG, Hyun Mo; LOMBARDI JUNIOR, Luis Pedro; CASTRO, Fabio Fernandes Morato; YANG, Ariana Campos
    At the beginning of 2020, SARS-CoV-2 spread to all continents, and many countries adopted quarantine to flatten the COVID-19 outbreak, resulting in the containment of transmission. However, the persistent transmission of SARS-CoV-2, an RNA virus, resulted in the appearance of mutations in the original virus. The appearance of more virulent mutations in different regions of the world resulted in an increased number of severe COVID-19 cases. A mathematical model based on the COVID-19 natural history encompassing the mutations was applied to evaluate the SARS-CoV-2 epidemic. The model parameters were fitted against the observed data from Sao Paulo State (Brazil) considering quarantine, relaxation, and mutation. The estimated data from Sao Paulo State showed that the original SARS-CoV-2 transmission better explained the COVID-19 epidemic during the quarantine. However, the increased number of fatalities beyond that predicted by the relaxation indicated the occurrence of mutations. Hence, the relaxation in association with the transmission of a more virulent SARS-CoV-2 better estimated the COVID-19 epidemic from February 26, 2020, to June 15, 2021, in Sao Paulo State.
  • article 6 Citação(ões) na Scopus
    Cashew Tree Pollen: An Unknown Source of IgE-Reactive Molecules
    (2019) FIGO, Daniele Danella; AMICIS, Karine De; AQUINO, Denise Neiva Santos de; POMIECINSKI, Fabiane; GADERMAIER, Gabriele; BRIZA, Peter; GALVAO, Clovis Eduardo Santos; AMARAL, Jonatas Bussador do; MARTINS, Carlo de Oliveira; CASTRO, Fabio Fernandes Morato; KALIL, Jorge; SANTOS, Keity Souza
    Pollinosis is sub-diagnosed and rarely studied in tropical countries. Cashew tree pollen has been reported as an allergen source although the knowledge of its immunoglobulin E (IgE)-reactive molecules is lacking. Therefore, this work aimed to identify IgE-reactive molecules and provide a proteomic profile of this pollen. From the 830 proteins identified by shotgun analysis, 163 were annotated to gene ontology, and a list of 39 proteins filtered for high confidence was submitted to the Allfam database where nine were assigned to allergenic families. Thus, 12 patients from the northeast of Brazil with persistent allergic rhinitis and aggravation of symptoms during cashew flowering season were selected. Using a 2D-based approach, we identified 20 IgE-reactive proteins, four already recognized as allergens, including a homolog of the birch isoflavone-reductase (Bet v 6). IgE-reactivity against the extract in native form was confirmed for five patients in ELISA, with three being positive for Bet v 6. Herein, we present a group of patients with rhinitis exposed to cashew tree pollen with the first description of IgE-binding proteins and a proteomic profile of the whole pollen. Cashew tree pollen is considered an important trigger of rhinitis symptoms in clinical practice in the northeast of Brazil, and the elucidation of its allergenic molecules can improve the diagnostics and treatment for allergic patients.
  • article 24 Citação(ões) na Scopus
    Mathematical modeling of the transmission of SARS-CoV-2-Evaluating the impact of isolation in SAo Paulo State (Brazil) and lockdown in Spain associated with protective measures on the epidemic of CoViD-19
    (2021) YANG, Hyun Mo; LOMBARDI JUNIOR, Luis Pedro; CASTRO, Fabio Fernandes Morato; YANG, Ariana Campos
    Coronavirus disease 2019 (CoViD-19), with the fatality rate in elder (60 years old or more) being much higher than young (60 years old or less) patients, was declared a pandemic by the World Health Organization on March 11, 2020. A mathematical model considering young and elder subpopulations under different fatality rates was formulated based on the natural history of CoViD-19 to study the transmission of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The model considered susceptible, exposed, asymptomatic, pre-symptomatic, mild CoViD-19, severe CoViD-19, and recovered compartments, besides compartments of isolated individuals and those who were caught by test. This model was applied to study the epidemiological scenario resulting from the adoption of quarantine (isolation or lockdown) in many countries to control the rapid propagation of CoViD-19. We chose as examples the isolation adopted in SAo Paulo State (Brazil) in the early phase but not at the beginning of the epidemic, and the lockdown implemented in Spain when the number of severe CoViD-19 cases was increasing rapidly. Based on the data collected from SAo Paulo State and Spain, the model parameters were evaluated, and we obtained a higher estimation for the basic reproduction number R-0 (9.24 for SAo Paulo State, and 8 for Spain) compared to the currently accepted estimation of R-0 around 2 using the SEIR (susceptible, exposed, infectious, and recovered compartments) model. In comparison with the lockdown in Spain, the relatively early adoption of the isolation in SAo Paulo State resulted in enlarging the period of the first wave of the epidemic and delaying its peak. The model allowed to explain the flattening of the epidemic curves by quarantine when associated with the protective measures (face mask, washing hands with alcohol and gel, and social distancing) adopted by the population. The description of the epidemic under quarantine and protections can be a background to foreseen the epidemiological scenarios from the release strategies, which can help guide public health policies by decision-makers.
  • article 36 Citação(ões) na Scopus
    Proteomic characterization of the multiple forms of the PLAs from the venom of the social wasp Polybia paulista
    (2011) SANTOS, Lucilene Delazari dos; MENEGASSO, Anally Ribeiro da Silva; PINTO, Jose Roberto Aparecido dos Santos; SANTOS, Keity Souza; CASTRO, Fabio Morato; KALIL, Jorge Elias; PALMA, Mario Sergio
    The phospholipases A(1) (PLA(1)s) from the venom of the social wasp Polybia paulista occur as a mixture of different molecular forms. To characterize the molecular origin of these structural differences, an experimental strategy was planned combining the isolation of the pool of PLAs from the wasp venom with proteomic approaches by using 2-D, MALDI-TOF-TOF MS and classical protocols of protein chemistry, which included N- and C-terminal sequencing. The existence of an intact form of PLA(1) and seven truncated forms was identified, apparently originating from controlled proteolysis of the intact protein; in addition to this, four of these truncated forms also presented carbohydrates attached to their molecules. Some of these forms are immunoreactive to specific-IgE, while others are not. These observations permit to raise the hypothesis that naturally occurring proteolysis of PLA(1), combined with protein glycosylation may create a series of different molecular forms of these proteins, with different levels of allergenicity. Two forms of PLA(2)s, apparently related to each other, were also identified; however, it was not possible to determine the molecular origin of the differences between both forms, except that one of them was glycosylated. None of these forms were immunoreactive to human specific IgE.