CLOVIS ARTUR ALMEIDA DA SILVA
Projetos de Pesquisa
Unidades Organizacionais
Departamento de Pediatria, Faculdade de Medicina - Docente
Instituto da Criança, Hospital das Clínicas, Faculdade de Medicina
LIM/36 - Laboratório de Pediatria Clínica, Hospital das Clínicas, Faculdade de Medicina - Líder
Instituto da Criança, Hospital das Clínicas, Faculdade de Medicina
LIM/36 - Laboratório de Pediatria Clínica, Hospital das Clínicas, Faculdade de Medicina - Líder
42 resultados
Resultados de Busca
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- Influenza A/Singapore (H3N2) component vaccine in systemic lupus erythematosus: A distinct pattern of immunogenicity(2021) FORMIGA, Francisco Fellipe Claudino; SILVA, Clovis Artur; PEDROSA, Tatiana do Nascimento; AIKAWA, Nadia Emi; PASOTO, Sandra Gofinet; GARCIA, Cristiana Couto; CAPAO, Artur Silva Vidal; MARTINS, Victor Adriano de Oliveira; PROENCA, Adriana Coracini Tonacio de; FULLER, Ricardo; YUKI, Emily Figueiredo Neves; VENDRAMINI, Margarete Borges Galhardo; ROSARIO, Debora Cordeiro do; BRANDAO, Leticia Maria Kolachinski Raposo; SARTORI, Ana Marli Christovam; ANTONANGELO, Leila; BONFA, Eloisa; BORBA, Eduardo FerreiraIntroduction Influenza A (H3N2) virus is the most important cause of seasonal influenza morbidity and mortality in the last 50 years, surpassing the impact of H1N1. Data assessing immunogenicity and safety of this virus component are lacking in systemic lupus erythematosus (SLE) and restricted to small reports with other H3N2 strains. Objective This study aims to evaluate short-term immunogenicity and safety of influenza A/Singapore (H3N2) vaccine in SLE. Methods 81 consecutive SLE patients and 81 age- and sex-matched healthy controls (HC) were vaccinated with the influenza A/Singapore/INFIMH-16-0019/2016(H3N2)-like virus. Seroprotection (SP) and seroconversion (SC) rates, geometric mean titers(GMT), and factor increase in GMT(FI-GMT) and adverse events were assessed before and 4 weeks post-vaccination. Disease activity and therapies were also evaluated. Results Before immunization, SLE and HC groups had high SP rates (89% vs 77%, p = 0.061) and elevated GMT titer with higher levels in SLE (129.1(104.1-154.1) vs 54.8(45.0-64.6), p < 0.001). Frequency of two previous years' influenza vaccination was high and comparable in SLE and HC (89% vs 90%, p = 1.000). Four weeks post-vaccination, median GMT increased for both groups and remained higher in SLE compared to HC (239.9(189.5-290.4) vs 94.5(72.6-116.4), p < 0.0001) with a comparable FI-GMT (2.3(1.8-2.9) vs 1.9(1.5-2.3), p = 0.051). SC rates were low and comparable for both groups (16% vs 11%, respectively, p = 0.974). Disease activity scores remained stable throughout the study (p = 1.000) and severe adverse events were not identified. Conclusion Influenza A/Singapore (H3N2) vaccine has an adequate safety profile. The distinct immunogenicity pattern from other influenza A components characterized by a remarkably high pre- and post-vaccination SP rate and high GMT levels may be associated with previous influenza A vaccination. (, NCT03540823).
conferenceObject Immunogenicity and Safety of an Inactivated Virus Vaccine Against SARS-CoV-2 in Patients with Autoimmune Rheumatic Diseases(2021) MEDEIROS-RIBEIRO, Ana; AIKAWA, Nadia; SAAD, Carla Goncalves Schahin; YUKI, Emily Figueiredo Vieira Neves; PEDROSA, Tatiana do Nascimento; FUSCO, Solange; ROJO, Priscila; PEREIRA, Rosa; SHINJO, Samuel; ANDRADE, Danieli; SAMPAIO-BARROS, Percival; RIBEIRO, Carolina; DEVEZA, Giordano; MARTINS, Victor Adriano de Oliveira; SILVA, Clovis Artur; LOPES, Marta; DUARTE, Alberto; ANTONANGELO, Leila; SABINO, Ester; KALLAS, Esper; PASOTO, Sandra Gofinet; BONFA, Eloisa- Immunogenicity and safety of primary fractional-dose yellow fever vaccine in autoimmune rheumatic diseases(2021) TONACIO, Adriana Coracini; PEDROSA, Tatiana do Nascimento; BORBA, Eduardo Ferreira; AIKAWA, Nadia Emi; PASOTO, Sandra Gofinet; FERREIRA FILHO, Julio Cesar Rente; BARROS, Marilia Mantovani Sampaio; LEON, Elaine Pires; LOMBARDI, Suzete Cleusa Ferreira Spina; MENDRONE JUNIOR, Alfredo; AZEVEDO, Adriana de Souza; SCHWARCZ, Waleska Dias; FULLER, Ricardo; YUKI, Emily Figueiredo Neves; LOPES, Michelle Remiao Ugolini; PEREIRA, Rosa Maria Rodrigues; BARROS, Percival Degrava Sampaio; ANDRADE, Danieli Castro Oliveira de; MEDEIROS-RIBEIRO, Ana Cristina de; MORAES, Julio Cesar Bertacini de; SHINJO, Samuel Katsuyuki; MIOSSI, Renata; DUARTE, Alberto Jose da Silva; LOPES, Marta Heloisa; KALLAS, Esper Georges; SILVA, Clovis Artur Almeida da; BONFA, EloisaBackground Brazil faced a yellow fever(YF) outbreak in 2016-2018 and vaccination was considered for autoimmune rheumatic disease patients(ARD) with low immunosuppression due to YF high mortality. Objective This study aimed to evaluate, prospectively for the first time, the short-term immunogenicity of the fractional YF vaccine(YFV) immunization in ARD patients with low immunossupression. Methods and Results A total of 318 participants(159 ARD and 159 age- and sex-matched healthy controls) were vaccinated with the fractional-dose(one fifth) of 17DD-YFV. All subjects were evaluated at entry(D0), D5, D10, and D30 post-vaccination for clinical/laboratory and disease activity parameters for ARD patients. Post-vaccination seroconversion rate(83.7%vs.96.6%, p = 0.0006) and geometric mean titers(GMT) of neutralizing antibodies[1143.7 (95%CI 1012.3-1292.2) vs.731 (95%CI 593.6-900.2), p< 0.001] were significantly lower in ARD compared to controls. A lower positivity rate of viremia was also identified for ARD patients compared to controls at D5 (53%vs.70%, p = 0.005) and the levels persisted in D10 for patients and reduced for controls(51%vs.19%, p = 0.0001). The viremia was the only variable associated with seroconvertion. No serious adverse events were reported. ARD disease activity parameters remained stable at D30(p>0.05). Conclusion Fractional-dose 17DD-YF vaccine in ARD patients resulted in a high rate of seroconversion rate(> 80%) but lower than controls, with a longer but less intense viremia. This vaccine was immunogenic, safe and did not induce flares in ARD under low immunosuppression and may be indicated in YF outbreak situations and for patients who live or travel to endemic areas.
- PEDIATRICIANS AFTER RESIDENCY: A SURVEY OF PERSONAL/PROFESSIONAL DATA AND ISSUES(2021) SILVA, Clovis Artur; TRINDADE, Vitor Cavalcanti; ABEL, Roberta Capretz D’Oliveira; SILVA, Marcelo Oliveira; SANTOS, João Fernando Vecchi; KOCH, Vera Hermina Kalika; FERRER, Ana Paula Scoleze; BRENTANI, Alexandra; ODONE-FILHO, Vicente; TANNURI, Uenis; CARVALHO, Werther Brunow; CARNEIRO-SAMPAIO, Magda; GRISI, Sandra Josefina Ferraz ElleroABSTRACT Objective: To assess personal, professional, medical, and scientific educational characteristics and issues reported by pediatricians. Methods: Cross-sectional study based on an online survey including 614 pediatricians who graduated in the last 15 years at a University Pediatric Department in Brazil. Results: The response rate was 331/614(54%). The majority were females (82%), the median age was 33 years (27-40) and median years of pediatric practice was 5 (1-13). High workload (>60 hours/week) occurred in 25% and 47% earned ≥15 minimum wages/month. The most work-related issues reported were long working hours, poor social life and a sedentary lifestyle (>50%). Pediatricians were further divided into two groups, according to years of pediatric clinical practice: group 1 (≤5 years) and group 2 (>5 years). The median of overall satisfaction with pediatric residency [8(0-10) vs. 9 (4-10); p=0.002] was significantly reduced in group 1. The frequencies of workload >60 hours, work on pediatric ward and pediatric intensive care were significantly higher in the first group (p<0.05). Regarding main issues related to clinical practice in the last year, long working hours (73 vs. 53%; p<0.001), poor social life (75 vs. 62%; p=0.018) and harassment (23 vs. 4%; p=0.003) were significantly higher in the first group. Conclusions: Very early career pediatricians (≤5 years) reported higher workload, lower income, work-related issues and different location of pediatric practice compared to early career pediatricians (>5 years). The overall satisfaction with pediatric residency was good, however, reduced in very early career pediatricians.
conferenceObject Does F-18-FDG-PET/MRI Add Metabolic Information to Anatomic Image in Childhood-onset Takayasu's Arteritis Patients? A Multicenter Case Series(2021) CLEMENTE, Gleice; SOUZA, Alexandre; FILHO, Hilton Leao; COELHO, Fernando; BUCHPIGUEL, Carlos; LIMA, Marcos; PIOTO, Daniela Petry; FRAGA, Melissa; SAKAMOTO, Ana Paula; CARNEIRO, Camila; PEREIRA, Rosa; AIKAWA, Nadia; SILVA, Clovis Artur; CAMPOS, Lucia; ASTLEY, Camilla; GUALANO, Bruno; TERRERI, Maria- Hydroxychloroquine blood levels in stable lupus nephritis under low dose (2-3 mg/kg/day): 12-month prospective randomized controlled trial(2021) ZANETTI, Caio B.; PEDROSA, Tatiana; KUPA, Leonard de V. K.; AIKAWA, Nadia E.; BORBA, Eduardo F.; VENDRAMINI, Margarete B. G.; SILVA, Clovis A.; PASOTO, Sandra G.; BONFA, EloisaIntroduction The American Academy of Ophthalmology (2016-AAO) recommended hydroxychloroquine (HCQ) dose not to exceed 5 mg/kg/day (real body weight). Recently, it was reported that prescribed 2016-AAO dose provided adequate HCQ levels for most lupus nephritis (LN) patients, with low flare risk. However, the minimum HCQ dose required to keep adequate levels is unknown. Objectives To evaluate if a further reduction in 2016-AAO dose (2-3 mg/kg/day) would sustain 12-month HCQ levels in LN patients with stable inactive disease. Methods Seventy-three stable LN patients under prescribed full HCQ 2016-AAO dose for >= 6 months and adequate baseline HCQ levels (>= 613.5 ng/mL) were divided in two groups: reduced 2016-AAO dose (2-3 mg/kg/day), n = 32, and full 2016-AAO dose (5 mg/kg/day), n = 41. All patients were assessed at baseline, 3, 6, and 12 months. HCQ levels were measured by liquid chromatography-tandem mass spectrometry. Flare was defined as augment >= 3 in SLE Disease Activity Index-2000 and/or change in treatment. Rigorous clinical/laboratorial surveillance was performed. Results Prospective evaluation revealed for reduced 2016-AAO dose group a decrease of HCQ levels from baseline to 3 months (1,404.9 +/- 492.0 vs. 731.6 +/- 385.0 ng/mL, p < 0.01), and sustained levels at 6 months (p = 0.273) and 12 months (p = 0.091) compared to 3 months. For the full 2016-AAO dose group, a decrease occurred only from baseline to 12 months (1343.5 +/- 521.5 vs. 991.6 +/- 576.3 ng/mL, p < 0.001). Frequencies of patients with inadequate levels at 6 months was higher in reduced 2016-AAO group than full 2016-AAO dose (59% vs. 24%, p = 0.005), as well as at 12 months (66% vs. 32%, p = 0.002). Six-month and 12-month flare frequencies were comparable for both groups (p > 0.05). Conclusions Prescribed HCQ low-dose regimen (2-3 mg/kg/day) does not sustain, for most patients, 6- and 12-month adequate HCQ levels. Full 2016-AAO dose maintained HCQ levels way above this limit. Trail registration: NCT03122431, registered on April 20, 2017
bookPart Síndrome pós-recuperação e complicações a médio e longo prazos da COVID-19 pediátrica(2021) PEREIRA, Maria Fernanda Badue; SILVA, Clovis Artur Almeida da- Air pollution influence on serum inflammatory interleukins: A prospective study in childhood-onset systemic lupus erythematous patients(2021) FARHAT, Sylvia Costa Lima; EJNISMAN, Carolina; ALVES, Andressa Guariento Ferreira; GOULART, Maria Fernanda Giacomin; LICHTENFELS, Ana Julia de Faria Coimbra; BRAGA, Alfesio Luis Ferreira; PEREIRA, Luiz Alberto Amador; ELIAS, Adriana Maluf; SILVA, Clovis A.Objective To assess the effect of individual exposure, in real-time, to traffic-related pollutants on serum interleukin levels of childhood-onset lupus erythematous systemic (c-SLE) patients. Methods A longitudinal and observational design was conducted in 12 repeated measures of serum samples and clinical evaluations (totaling 108 measurements) of c-SLE patients over 30 consecutive months. Real-time, individual exposure to fine particles (PM2.5) and nitrogen dioxide (NO2) was measured with portable monitors. Generalized estimating equation was used to evaluate the association between exposure to PM2.5 and NO2 and the following serum cytokine levels on the 7 days preceding clinical assessment and serum collection: MCP1, IL-6, IL-8, IL-10, IL-17, IFN-alpha, and TNF-alpha. Disease activity and other risk factors were also controlled. Results An interquartile range (IQR) increase in PM2.5 daily concentration was significantly associated with increased levels of TNF-alpha on the third, fourth, and seventh day after exposure; IL-10 on the third and fourth day after exposure; IL-17 on the third and seventh day after exposure; and INF-alpha on the third day after exposure (p < 0.05). An IQR increase in 7-day moving average of PM2.5 was associated with a 6.2 pg/mL (95% CI: 0.5; 11.8; p = 0.04) increase in serum IFN-alpha level. An unexpected significant association was observed between an IQR increase in NO(2)7-day cumulative concentration and a decrease of 1.6 pg/mL (95% CI: -2.6; -0.7; p < 0.001) in serum IL-17. Conclusion Real-time exposure to PM2.5 prospectively associated with increased serum TNF-alpha, INF-alpha, IL-10, and IL-17 levels in c-SLE patients.
- Echocardiographic study of juvenile dermatomyositis patients: new insights from speckle-tracking-derived strain(2021) DINIZ, Maria de Fatima Rodrigues; KOZU, Katia Tomie; ELIAS, Adriana Maluf; LIANZA, Alessandro Cavalcanti; SAWAMURA, Karen Saori Shiraishi; MENEZES, Carolina Rocha Brito; FERREIRA, Juliana Caires de Oliveira Achili; SILVA, Clovis Artur; LEAL, Gabriela NunesObjectives This study aimed to investigate subclinical left ventricle (LV) systolic dysfunction in juvenile dermatomyositis (JDM) using two-dimensional speckle-tracking echocardiography (2DST). Possible associations between LV deformation impairment and disease activity/cumulative damage were also evaluated. Methods Thirty-fiveconsecutive JDM patients without cardiac symptoms and 35 healthy volunteers were enrolled. Clinical data were collected from medical records, and echocardiograms were performed by a pediatric cardiologist, unaware of patients' conditions. Results Patients and controls had similar age (12.6 +/- 0.7 vs.12.5 +/- 0.6;p= 0.97) and gender (11F:24M vs.11F:24M;p= 1.0). Median of JDM duration was 4.6 (0.04-17.6) years, and only 6/35 (17%) had active disease (disease activity score (DAS > 3)). Conventional echocardiogram revealed preserved LV ejection fraction (EF) (>= 55%) in all individuals. In JDM, 2DST identified reduction of LV longitudinal [-22(-17.2 to -27.9) % vs. -23(-20.8 to -27.4) %;p= 0.028)] and circumferential -23.9 +/- 2.8% vs. -26.7 +/- 2.9%;p= 0.0002) strain. Lower longitudinal strain was associated with DAS >3 -19.9(-17.2 to -26.5)% vs. -22.1-18.9 to -27.9)%;p= 0.046], MDI extent > 0 [-19(-17.2 to -22.5)% vs. -22.1-19.2 to -27.9)%;p= 0.0008], MDI severity > 0 [-19(-17.2 to -22.1)% vs. -22.3(-20.3 to -27.9)%;p= 0.0001] and calcinosis[-20.6(-17.2 to -23)% vs. -22.3(-20.3 to -27.9)%;p= 0.03]. Lower circumferential strain was associated with MDI extent > 0 (-22.1 +/- 3.87% vs. -24.4 +/- 2.3%;p= 0.039), MDI severity > 0 (-21.7 +/- 3% vs. 24.7 +/- 2.3%;p= 0.004) and calcinosis (-22.5 +/- 3.3% vs. -24.8 +/- 2.1%;p= 0.02). There was a negative correlation between longitudinal strain and cumulative dose of prednisone (r= -0.44;p= 0.009) and methotrexate (r= -0.33;p= 0.0008). Conclusions LV 2DST detected early systolic myocardial compromise in asymptomatic pediatric JDM patients, with preserved EF. Longitudinal strain impairment was associated with disease activity and cumulative damage, whereas circumferential strain impairment was associated exclusively with cumulative damage.
bookPart Semiologia do adolescente(2021) FONSECA, Cláudia de Brito; QUEIROZ, Lígia; SILVA, Luiz Eduardo Vargas da; LOURENçO, Benito; SILVA, Clovis Artur Almeida da