Rio de Janeiro State University

About: Rio de Janeiro State University is a education organization based out in Rio de Janeiro, Brazil. It is known for research contribution in the topics: Population & Large Hadron Collider. The organization has 16631 authors who have published 30919 publications receiving 465753 citations. The organization is also known as: UERJ & Rio de Janeiro State University.

Combination of the top-quark mass measurements from the Tevatron collider

Abstract: We thank the Fermilab staff and technical staffs of the participating institutions for their vital contributions and acknowledge support from the DOE and NSF (USA), ARC (Australia), CNPq, FAPERJ, FAPESP, and FUNDUNESP (Brazil), NSERC (Canada), NSC, CAS, and CNSF (China), Colciencias (Colombia), MSMT and GACR (Czech Republic), the Academy of Finland, CEA, and CNRS/IN2P3 (France), BMBF and DFG (Germany), DAE and DST (India), SFI (Ireland), INFN (Italy), MEXT (Japan), the Korean World Class University Program and NRF (Korea), CONACyT (Mexico), FOM (Netherlands), MON, NRC KI, and RFBR (Russia), the Slovak R&D Agency, the Ministerio de Ciencia e Innovacio´n, and Programa Consolider-Ingenio 2010 (Spain), The Swedish Research Council (Sweden), SNSF (Switzerland), STFC and the Royal Society (United Kingdom), and the A. P. Sloan Foundation (USA).

Periodontal Therapy Reduces Plasma Levels of Interleukin-6, C-Reactive Protein, and Fibrinogen in Patients With Severe Periodontitis and Refractory Arterial Hypertension

Abstract: Background: Recent epidemiologic studies suggest that inflammation is the link between periodontal diseases and cardiovascular complications. This study aimed to evaluate the effects of non-surgical periodontal treatment on plasma levels of inflammatory markers (interleukin [IL]-6, C-reactive protein [CRP], and fibrinogen) in patients with severe periodontitis and refractory arterial hypertension. Methods: Twenty-two patients were examined and randomly divided into two groups. The test group was composed of 11 patients (mean age, 48.9 – 3.9 years) who received periodontal treatment, whereas the control group had 11 patients (mean age, 49.7 – 6.0 years) whose treatment was delayed for 3 months. Demographic and clinical periodontal data were collected, and blood tests were performed to measure the levels of IL-6, CRP, and fibrinogen at baseline and 3 months later. Results: The clinical results showed that the mean percentages of sites with bleeding on probing, probing depth (PD) 4 to 5 mm, PD ‡6 mm, clinical attachment loss (CAL) 4 to 5 mm, and CAL ‡6 mm were significantly reduced in the test group 3 months after periodontal treatment. There were no significant differences between the data at baseline and 3 months in the control group. Periodontal treatment significantly reduced the blood levels of fibrinogen, CRP, and IL-6 in the test group. Conclusion: Non-surgical periodontal therapy was effective in improving periodontal clinical data and in reducing the plasma levels of IL-6, CRP, and fibrinogen in hypertensive patients with severe periodontitis. J Periodontol 2009;80:786791.

Carotid Intima-Media Thickness Progression as Surrogate Marker for Cardiovascular Risk: Meta-Analysis of 119 Clinical Trials Involving 100 667 Patients

Abstract: Background: To quantify the association between effects of interventions on carotid intima-media thickness (cIMT) progression and their effects on cardiovascular disease (CVD) risk. Methods: We systematically collated data from randomized, controlled trials. cIMT was assessed as the mean value at the common-carotid-artery; if unavailable, the maximum value at the common-carotid-artery or other cIMT measures were used. The primary outcome was a combined CVD end point defined as myocardial infarction, stroke, revascularization procedures, or fatal CVD. We estimated intervention effects on cIMT progression and incident CVD for each trial, before relating the 2 using a Bayesian meta-regression approach. Results: We analyzed data of 119 randomized, controlled trials involving 100 667 patients (mean age 62 years, 42% female). Over an average follow-up of 3.7 years, 12 038 patients developed the combined CVD end point. Across all interventions, each 10 μm/y reduction of cIMT progression resulted in a relative risk for CVD of 0.91 (95% Credible Interval, 0.87-0.94), with an additional relative risk for CVD of 0.92 (0.87-0.97) being achieved independent of cIMT progression. Taken together, we estimated that interventions reducing cIMT progression by 10, 20, 30, or 40 μm/y would yield relative risks of 0.84 (0.75-0.93), 0.76 (0.67-0.85), 0.69 (0.59-0.79), or 0.63 (0.52-0.74), respectively. Results were similar when grouping trials by type of intervention, time of conduct, time to ultrasound follow-up, availability of individual-participant data, primary versus secondary prevention trials, type of cIMT measurement, and proportion of female patients. Conclusions: The extent of intervention effects on cIMT progression predicted the degree of CVD risk reduction. This provides a missing link supporting the usefulness of cIMT progression as a surrogate marker for CVD risk in clinical trials.

Prompt and non-prompt J/ψ production in pp collisions at √s = 7 TeV

Abstract: The production of J/psi mesons is studied in pp collisions at sqrt(s)=7 TeV with the CMS experiment at the LHC. The measurement is based on a dimuon sample corresponding to an integrated luminosity of 314 inverse nanobarns. The J/psi differential cross section is determined, as a function of the J/psi transverse momentum, in three rapidity ranges. A fit to the decay length distribution is used to separate the prompt from the non-prompt (b hadron to J/psi) component. Integrated over J/psi transverse momentum from 6.5 to 30 GeV/c and over rapidity in the range |y| < 2.4, the measured cross sections, times the dimuon decay branching fraction, are 70.9 \pm 2.1 (stat.) \pm 3.0 (syst.) \pm 7.8(luminosity) nb for prompt J/psi mesons assuming unpolarized production and 26.0 \pm 1.4 (stat.) \pm 1.6 (syst.) \pm 2.9 (luminosity) nb for J/psi mesons from b-hadron decays.

Body mass index and measures of adiposity among elderly adults

Abstract: OBJETIVO: Avaliar o estado nutricional dos idosos e comparar o Indice de Massa Corporal (IMC=kg/m²) com varios indicadores de adiposidade e de localizacao de gordura em idosos e adultos de meia idade. METODOS: Idosos (N=699; 60 anos e mais) e adultos (N=1.306; 40-59,9 anos) participantes de inquerito realizado em 1996, no municipio do Rio de Janeiro foram avaliados quanto ao indice de massa corporal, perimetro braquial, perimetro da cintura, perimetro do quadril, espessuras das dobras cutâneas triciptal e subescapular, area de gordura e area muscular do braco obtidas a partir de procedimentos padronizados. Foram utilizados os pontos de corte propostos pela Organizacao Mundial de Saude para relacao cintura quadril, perimetro da cintura e indice de massa corporal. As comparacoes utilizaram o coeficiente de correlacao de Spearman e a regressao linear, ajustada para idade. RESULTADOS: Cerca de 50% dos idosos apresentaram sobrepeso. A prevalencia de inadequacao do perimetro da cintura e da relacao cintura quadril foi superior a 50% entre as mulheres e cerca de 40% para o perimetro da cintura e de 20% para a relacao cintura quadril entre os homens. As medidas relacionadas com adiposidade (perimetro da cintura, dobra cutânea triciptal, dobra cutânea subescapular e area de gordura do braco) apresentaram, em idosos, correlacoes parciais (ajustadas pela idade) com o indice de massa corporal entre 0,45 e 0,85 nos homens e de 0,54 a 0,86 nas mulheres. Tanto em adultos, quanto em idosos, a massa corporal seguida do perimetro da cintura foram as variaveis que mais explicaram o indice de massa corporal. CONCLUSOES: A prevalencia de sobrepeso em idosos foi alta tanto em homens quanto em mulheres e o indice de massa corporal guarda relacao similar com a adiposidade independente do envelhecimento.