Anticitrullinated peptide antibodies (ACPA) in the serum of heavy smokers without arthritis - a differential role of associated pulmonary disease?

2 páginas, 1 tabla.-- Póster presentado al 5º European Workshop on Immune-Mediated Inflammatory Diseases celebrado en Sitges (Barcelona) del 1 al 3 de Diciembre de 2010.An increased risk of RA has been described in smokers, but only in ACPA-positive RA patients. The frequency of ACPA in serum of heavy smokers is not known.Peer reviewe

The Cryogenic System for the LHC Test String 2: Design, Commissioning and Operation

A 107-m long superconducting magnet string representing a full-cell of the LHC machine was designed for assembly and commissioning at CERN in order to validate the final design choices. This new facility, thereafter called Test String 2, and its cryogenic infrastructure cons ist of feed and return boxes coupled via transfer lines to a 6 kW @ 4.5 K refrigerator and to a low pressure pumping group, a separate cryogenic distribution line, an electrical feed box with HTS current leads, 2 quadrupole and 6 dipole prototype and pre-series superconducting magnets

Estudio observacional con certolizumab pegol de 12 semanas de duración en pacientes con artritis reumatoide con y sin exposición previa a anti-TNF: resultados ecográficos, clínicos y reportados por los pacientes

[Abstract] Objectives: To assess the effectiveness and safety of certolizumab pegol (CZP) in Spanish patients with RA. Materials and methods: SONAR (NCT01526434), a 12-week, open-label, prospective, observational, multicenter study. Patients with active RA for ≥3 months, according to ACR criteria, were treated with CZP (400mg at Weeks 0, 2 and 4, then 200mg every 2 weeks). The primary effectiveness endpoint was change from baseline (CFB) in Health Assessment Questionnaire-Disability Index (HAQ-DI) at Week 12. Other assessments included DAS28(ESR), patient's assessment of arthritis pain (PtAAP-VAS) and Short Form 36-item Health Survey (SF-36) physical component summary (PCS) and mental component summary (MCS). Joint inflammation was investigated using Power Doppler (PD) ultrasound (US), to detect effusion, synovial hypertrophy and synovial PD signal. PDUS outcomes assessed CFB to Week 12 in synovial hypertrophy, effusion and PD signal indices. Results: A total of 77/80 enrolled patients received ≥1 dose of CZP. The 12-week mean reduction from baseline (SD) was -0.6 (0.6) for HAQ-DI and -2.2 (1.5) for DAS28(ESR). PtAAP-VAS was reduced from baseline (mean [SD]: -36.8 [26.8]) and improvements in SF-36 PCS and SF-36 MCS were reported. Synovial hypertrophy, effusion and PD signal indices were reduced from baseline to Week 12. One death was reported during the study. Conclusions: Spanish patients with RA demonstrated improvements in clinical, PDUS and patient-reported outcomes over 12 weeks of CZP treatment. No new safety signals were identified, and the safety profile was in line with previous CZP studies. These results support previous clinical trial findings investigating CZP treatment for active RA.[Resumen] Objetivos: Evaluar la eficacia y la seguridad de certolizumab pegol (CZP) en pacientes españoles con artritis reumatoide (AR). Materiales y métodos: SONAR (NCT01526434), un estudio multicéntrico, observacional, prospectivo, abierto de 12 semanas. Pacientes con AR activa ≥3 meses, según criterios ACR, recibieron CZP (400 mg en las semanas 0, 2 y 4, seguido de 200 mg cada 2 semanas). La variable principal de eficacia fue el cambio desde el inicio (CDI) en el HAQ en la semana 12. Otras evaluaciones incluían el DAS28-VSG, la valoración del dolor (PtAAP-VAS) y el componente físico (PCS) y mental (MCS) del SF-36. La inflamación articular se estudió utilizando ecografía con Power Doppler (PDUS) midiendo derrame, hipertrofia sinovial y señal PD sinovial. Los resultados de PDUS evaluaron el CDI hasta la semana 12 en índices de hipertrofia sinovial, derrame y PD. Resultados: Un total de 77/80 pacientes recibieron ≥una dosis de CZP. La reducción media en 12 semanas desde el inicio (DE) fue de −0,6 (0,6) para HAQ y de −2,2 (1,5) para DAS28-VSG. La PtAAP-VAS disminuyó desde el inicio (media [DE]: −36,8 [26,8]) y hubo mejorías en los componentes PCS y MCS del SF-36. Los índices de señales de hipertrofia sinovial, derrame y PD disminuyeron desde el inicio hasta la semana 12. Se notificó una muerte durante el estudio. Conclusiones: Los pacientes españoles con AR mostraron mejoras en resultados clínicos, PDUS y notificados por el paciente durante 12 semanas de tratamiento con CZP. No hubo nuevas señales de seguridad, y el perfil de seguridad estaba en línea con estudios previos. Estos resultados respaldan los hallazgos de ensayos clínicos previos de CZP en AR

Immature Blood Vessels in Rheumatoid Synovium Are Selectively Depleted in Response to Anti-TNF Therapy

BACKGROUND:Angiogenesis is considered an important factor in the pathogenesis of Rheumatoid Arthritis (RA) where it has been proposed as a therapeutic target. In other settings, active angiogenesis is characterized by pathologic, immature vessels that lack periendothelial cells. We searched for the presence of immature vessels in RA synovium and analyzed the dynamics of synovial vasculature along the course of the disease, particularly after therapeutic response to TNF antagonists. METHODOLOGY/PRINCIPAL FINDINGS:Synovial arthroscopic biopsies from RA, osteoarthritis (OA) and normal controls were analyzed by double labeling of endothelium and pericytes/smooth muscle mural cells to identify and quantify mature/immature blood vessels. To analyze clinicopathological correlations, a cross-sectional study on 82 synovial biopsies from RA patients with variable disease duration and severity was performed. A longitudinal analysis was performed in 25 patients with active disease rebiopsied after anti-TNF-alpha therapy. We found that most RA synovial tissues contained a significant fraction of immature blood vessels lacking periendothelial coverage, whereas they were rare in OA, and inexistent in normal synovial tissues. Immature vessels were observed from the earliest phases of the disease but their presence or density was significantly increased in patients with longer disease duration, higher activity and severity, and stronger inflammatory cell infiltration. In patients that responded to anti-TNF-alpha therapy, immature vessels were selectively depleted. The mature vasculature was similarly expanded in early or late disease and unchanged by therapy. CONCLUSION/SIGNIFICANCE:RA synovium contains a significant fraction of neoangiogenic, immature blood vessels. Progression of the disease increases the presence and density of immature but not mature vessels and only immature vessels are depleted in response to anti-TNFalpha therapy. The different dynamics of the mature and immature vascular fractions has important implications for the development of anti-angiogenic interventions in RA