MARCELO VIVOLO AUN
Projetos de Pesquisa
Unidades Organizacionais
Instituto Central, Hospital das Clínicas, Faculdade de Medicina - Médico
LIM/60 - Laboratório de Imunologia Clínica e Alergia, Hospital das Clínicas, Faculdade de Medicina
LIM/60 - Laboratório de Imunologia Clínica e Alergia, Hospital das Clínicas, Faculdade de Medicina
84 resultados
Resultados de Busca
Agora exibindo 1 - 10 de 84
- Th17/Treg-Related Intracellular Signaling in Patients with Chronic Obstructive Pulmonary Disease: Comparison between Local and Systemic Responses(2021) LOURENCO, Juliana D.; TEODORO, Walcy R.; BARBEIRO, Denise F.; VELOSA, Ana Paula P.; SILVA, Larissa E. F.; KOHLER, Julia B.; MOREIRA, Alyne R.; V, Marcelo Aun; SILVA, Isadora C. da; FERNANDES, Frederico L. A.; NEGRI, Elnara M.; GROSS, Jefferson L.; TIBERIO, Iolanda F. L. C.; ITO, Juliana T.; LOPES, Fernanda D. T. Q. S.Th17/Treg imbalance plays a pivotal role in COPD development and progression. We aimed to assess Th17/Treg-related intracellular signaling at different COPD stages in local and systemic responses. Lung tissue and/or peripheral blood samples were collected and divided into non-obstructed (NOS), COPD stages I and II, and COPD stages III and IV groups. Gene expression of STAT3 and -5, ROR gamma t, Foxp3, interleukin (IL)-6, -17, -10, and TGF-beta was assessed by RT-qPCR. IL-6, -17, -10, and TGF-beta levels were determined by ELISA. We observed increased STAT3, ROR gamma t, Foxp3, IL-6, and TGF-beta gene expression and IL-6 levels in the lungs of COPD I and II patients compared to those of NOS patients. Regarding the systemic response, we observed increased STAT3, ROR gamma t, IL-6, and TGF-beta gene expression in the COPD III and IV group and increased IL-6 levels in the COPD I and II group. STAT5 was increased in COPD III and IV patients, although there was a decrease in Foxp3 expression and IL-10 levels in the COPD I and II and COPD III and IV groups, respectively. We demonstrated that an increase in Th17 intracellular signaling in the lungs precedes this increase in the systemic response, whereas Treg intracellular signaling varies between the compartments analyzed in different COPD stages.
- Drug-induced anaphylaxis: is it an epidemic?(2018) GIAVINA-BIANCHI, Pedro; AUN, Marcelo V.; KALIL, JorgePurpose of reviewThe present review addresses the epidemiology, analyzes the current data and promotes global awareness of drug-induced anaphylaxis.Recent findingsAnaphylaxis is a medical emergency that may cause death! In the last decade, studies have shown an increasing incidence and prevalence of anaphylaxis.SummaryDrug-induced anaphylaxis fatalities have increased, and this syndrome remains underdiagnosed and undertreated.
conferenceObject Inhaled corticoids in asthmatic patients: effect on body mass index and spirometry(2018) PACHECO, Rosilane dos Reis; ANDRADE, Mayra Coutinho; PEDROSO, Natalia Falci; TAKEJIMA, Priscila; AUN, Marcelo V.; KALIL FILHO, Jorge Elias; GIAVINA-BIANCHI, Pedro; AGONDI, Rosana C.bookPart Reações adversas a medicamentos: diagnóstico e classificação(2022) GIAVINA-BIANCHI, Pedro; AUN, Marcelo Vivolo; MOTTA, Antônio AbíliobookPart Angioedema Agudo(2015) AUN, Marcelo Vivolo; MOTTA, Antonio AbíliobookPart Reações adversas a medicamentos(2021) AUN, Marcelo Vivolo; MOTTA, Antonio AbílioconferenceObject Esophagogastroduodenal Mucosal Behavior after Bronchial Challenge with House Dust Mites in Allergic Asthmatic Patients(2015) AGONDI, Rosana C.; NAVARRO-RODRIGUEZ, Tomas; BARBUTI, Ricardo; BISACCIONI, Carla; AUN, Marcelo Vivolo; KALIL, Jorge; GIAVINA-BIANCHI, PedroconferenceObject Intradermal test is a relevant biomarker of the outcome of rapid desensitization in penicillin allergy(2017) GARCIA, J. F.; V, M. Aun; MOTTA, A. A.; KALIL, J.; GIAVINA-BIANCHI, P.conferenceObject Case report of severe anaphylaxis induced by morphine and tramadol(2018) BRUGNOLLI, R. M.; PEREIRA, A. R. F.; KALIL, J.; MOTTA, A. A.; V, M. Aun; GIAVINA-BIANCHI, P.- Spirometric values in elderly asthmatic patients are not influenced by obesity(2012) AGONDI, R. C.; BISACCIONI, C.; AUN, M. V.; RIBEIRO, M. R.; KALIL, J.; GIAVINA-BIANCHI, P.Background Studies have suggested that asthma in obese individuals differs from the classic asthma phenotype, presenting as a disease that is more difficult to control. Objective The objective of the present study was to determine whether obesity, age or a combination of the two are associated with worse spirometry parameters in patients with asthma. Methods This was an observational cross-sectional study involving patients over 18 years of age who had been diagnosed with asthma (allergic or nonallergic). We evaluated the results of their spirometric tests. The patients were classified in accordance with two criteria: body mass index (BMI) and age. Based on their BMIs, the patients were divided into three groups: normal weight, overweight and obese. Patients were also separated into two categories by age: 18-59 years of age; and >= 60 years of age. Results We evaluated 451 patients with asthma and their spirometry tests. In the present study, the pulmonary function parameters were negatively correlated with BMI and age (P < 0.05). We found that there was a statistically significant correlation between spirometric values and BMI among patients 18-59 years of age (P < 0.001), however, among patients over 60, we did not observe this negative association. Conclusions and Clinical Relevance The spirometric values decreased significantly in proportion to the increase of BMI and age in patients with asthma, especially among young adults. There was no negative correlation between BMI and FEV1 in the group >= 60 years of age, suggesting that perhaps the time of disease is a major factor in the loss of lung function than weight gain in the elderly.