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1.
Reumatismo ; 73(4)2022 Feb 07.
Artigo em Inglês | MEDLINE | ID: mdl-35130683

RESUMO

In this study we systematically investigated the health-related quality of life (HRQoL) tools, which have been most often used over the last five years to evaluate the QoL in patients with systemic lupus erythematosus (SLE), focusing on their items and applications. A detailed literature search was conducted: the inclusion criteria were as follows: 1) studies including at least 50 patients; 2) studies including at least 25 patients with SLE; 3) quality of life testing with validated measures. The systematic review was based on 119 studies for a total of 32,449 SLE patients and 3092 controls. A total of 35 different patients-reported quality of life measures, applied in cohorts of patients with SLE, were retrieved with the 36-item Medical Outcome Short Form (SF-36) (63 studies of 119 =52.95%), Lupus Quality of Life (LupusQoL) (17 studies =14.3%) and Lupus Patient-Reported Outcome (LupusPRO) (12 studies =10%) being the most commonly used tools. Overall, this systematic review of the literature indicated that quality of life in patients with SLE appears to be poor and generally lower compared to both the general population and patients with other chronic conditions, as was shown by a few studies that used SF-36 and LupusPRO. The use of HRQoL scoring in SLE is gaining increasing interest and is used both in randomized controlled trials and in real-life. Future efforts are needed to improve the understanding of the impact of the disease burden on quality of life from the patient's perspective.


Assuntos
Lúpus Eritematoso Sistêmico , Qualidade de Vida , Efeitos Psicossociais da Doença , Humanos , Medidas de Resultados Relatados pelo Paciente , Inquéritos e Questionários
2.
Reumatismo ; 73(4)2022 Feb 07.
Artigo em Inglês | MEDLINE | ID: mdl-35130681

RESUMO

OBJECTIVE: Since of the last publication of last recommendations on primary large-vessel vasculitis (LVV) endorsed by the Italian Society of Rheumatology (SIR) in 2012, new evidence emerged regarding the diagnosis and the treatment with conventional and biologic immunosuppressive drugs. The associated potential change of clinical care supported the need to update the original recommendations. METHODS: Using the grading of recommendations assessment, development and evaluation (GRADE)-ADOLOPMENT framework, a systematic literature review was performed to update the evidence supporting the European Alliance of Associations for Rheumatology (EULAR) guidelines on LVV as reference. A multidisciplinary panel of 12 expert clinicians, a trained nurse, and a patients' representative discussed the recommendation in cooperation with an Evidence Review Team. Sixty-one stakeholders were consulted to externally review and rate the recommendations. RESULTS: Twelve recommendations were formulated. A suspected diagnosis of LVV should be confirmed by imaging or histology. In active GCA or TAK, the prompt commencement of high dose of oral glucocorticoids (40-60 mg prednisone-equivalent per day) is strongly recommended to induce clinical remission. In selected patients with GCA (e.g., refractory or relapsing disease or patients at risk of glucocorticoid related adverse effects) the use of an adjunctive therapy (tocilizumab or methotrexate) is recommended. In all patients diagnosed with TAK, adjunctive therapies, such as conventional synthetic or biological immunosuppressants, should be given in combination with glucocorticoids. CONCLUSIONS: The new set of SIR recommendations was formulated in order to provide a guidance on both diagnosis and treatment of patients suspected of or with a definite diagnosis of LVV.


Assuntos
Arterite de Células Gigantes , Reumatologia , Arterite de Takayasu , Arterite de Células Gigantes/diagnóstico , Arterite de Células Gigantes/tratamento farmacológico , Humanos , Itália , Metotrexato/uso terapêutico
3.
BJOG ; 126(5): 656-661, 2019 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-30222236

RESUMO

OBJECTIVE: To evaluate the subsequent rate of thrombosis among women with obstetric antiphospholipid syndrome (Ob-APS) in a multicentre database of antiphospholipid antibody (aPL)-positive patients, and the clinical utility of the adjusted Global Antiphospholipid Syndrome Score (aGAPSS), a validated tool to assess the likelihood of developing new thrombosis, in this group of patients. DESIGN: Retrospective study. SETTING: The Antiphospholipid Syndrome Alliance for Clinical Trials and International Networking Clinical Database and Repository. POPULATION: Women with Ob-APS. METHODS: Comparison of clinical and laboratory characteristics and measurement of aGAPSS in women with Ob-APS, with or without thrombosis, after initial pregnancy morbidity (PM). MAIN OUTCOME MEASURES: Risk factors for thrombosis and aGAPSS. RESULTS: Of 550 patients, 126 had Ob-APS; 74/126 (59%) presented with thrombosis, and 47 (63%) of these women developed thrombosis after initial PM, in a mean time of 7.6 ± 8.2 years (4.9/100 patient years). Younger age at diagnosis of Ob-APS, additional cardiovascular risk factors, superficial vein thrombosis, heart valve disease, and multiple aPL positivity increased the risk of first thrombosis after PM. Women with thrombosis after PM had a higher aGAPSS compared with women with Ob-APS alone [median 11.5 (4-16) versus 9 (4-13); P = 0.0089]. CONCLUSION: Based on a retrospective analysis of our multicentre aPL database, 63% of women with Ob-APS developed thrombosis after initial obstetric morbidity; additional thrombosis risk factors, selected clinical manifestations, and high-risk aPL profile increased the risk. Women with subsequent thrombosis after Ob-APS had a higher aGAPSS at entry to the registry. We believe that aGAPSS is a valid tool to improve risk stratification in aPL-positive women. TWEETABLE ABSTRACT: More than 60% of women with obstetric antiphospholipid syndrome had thrombosis after initial pregnancy morbidity.


Assuntos
Síndrome Antifosfolipídica/complicações , Complicações Cardiovasculares na Gravidez/imunologia , Trombose/imunologia , Adulto , Anticorpos Antifosfolipídeos/sangue , Anticorpos Antifosfolipídeos/imunologia , Síndrome Antifosfolipídica/sangue , Ensaios Clínicos como Assunto , Bases de Dados Factuais , Feminino , Humanos , Gravidez , Sistema de Registros , Estudos Retrospectivos , Fatores de Risco
4.
Lupus ; 27(3): 399-406, 2018 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-28764618

RESUMO

Objective The objective of this study was to determine the efficacy of hydroxychloroquine (HCQ) in the primary thrombosis prevention of antiphospholipid antibody (aPL)-positive patients with no other systemic autoimmune diseases. Methods Under the auspices of Antiphospholipid Syndrome Alliance for Clinical Trials and International Networking, a multicenter, international, randomized controlled trial (RCT) was initiated, in which persistently aPL-positive but thrombosis-free patients without systemic autoimmune diseases were randomized to receive HCQ or no treatment in addition to their standard regimen. The primary objective was the efficacy of HCQ in preventing the first thrombosis. The secondary objectives were the thrombosis incidence rate, and the effects of HCQ on aPL profile and mortality rate. Patients were risk-stratified based on antiplatelet agent use. The goal was to follow patients every 6 months for 5 years. Results We recruited 20 persistently aPL-positive patients (female: 19, mean age: 46.6 ± 9.9 years, and baseline antiplatelet medication: 14); 9/20 were randomized to HCQ. During the mean follow-up of 1.7 years, no patients developed thrombosis or a serious adverse event. The study was terminated early due to the low recruitment rate, exacerbated by the prolonged manufacturing shortage and significant price increase of HCQ in the United States. Conclusion Given that a small number of patients with a relatively short follow-up were enrolled in our RCT, and no patients developed thrombosis, we cannot accurately assess the effectiveness of HCQ for primary thrombosis prevention in persistently aPL-positive patients with no other systemic autoimmune diseases. Our experience suggests that conducting an international RCT, especially without pharmaceutical support, is an extremely challenging undertaking.


Assuntos
Síndrome Antifosfolipídica/complicações , Síndrome Antifosfolipídica/tratamento farmacológico , Hidroxicloroquina/uso terapêutico , Trombose/prevenção & controle , Adulto , Anticorpos Antifosfolipídeos/sangue , Plaquetas/efeitos dos fármacos , Eritrócitos/efeitos dos fármacos , Feminino , Humanos , Modelos Lineares , Masculino , Pessoa de Meia-Idade , New York , Prevenção Primária
5.
Eur J Neurol ; 25(2): 320-325, 2018 02.
Artigo em Inglês | MEDLINE | ID: mdl-29082583

RESUMO

BACKGROUND AND PURPOSE: The most common neurological manifestation of antiphospholipid syndrome (APS) is ischaemic stroke. Identifying patients with APS at high risk for developing any thrombotic event remains a major challenge. In this study, the aim was to identify predictive factors of ischaemic stroke in a cohort of primary APS (PAPS) patients who presented with new onset symptoms suggestive of acute stroke. METHODS: This prospective multicentre study included 36 consecutive PAPS patients who presented with new onset symptoms suggestive of an acute stroke. Patients were prospectively followed up for 12 months. RESULTS: In 10 (28%) out of 36 PAPS patients [mean age 41 years (SD 13.4), 70% female], the suspicion of an acute stroke was confirmed by brain magnetic resonance imaging. Sixty per cent of these patients were <50 years old. Eight of the 10 patients had a history of previous venous thrombosis and were receiving vitamin K antagonist (VKA), with international normalized ratio target 2-3; one patient had a history of a previous arterial event receiving treatment with VKA target international normalized ratio 2-3 plus low dose aspirin; and one patient had a history of previous pregnancy morbidity receiving only low dose aspirin. Time in the therapeutic range for patients receiving VKA was 77.7% (SD 6.6%). Hypercholesterolaemia was significantly higher in patients with confirmed stroke compared to those without (P < 0.05). Similarly, a significantly higher rate of anti-ß2 glycoprotein-I (ß2GPI) antibodies (immunoglobulin G/immunoglobulin M; P < 0.05) and higher adjusted global APS score (aGAPSS) values were found in patients with a confirmed stroke [mean aGAPSS 8.9 (SD 4.7) vs. mean aGAPSS 6.4 (SD 2.5); P < 0.05]. CONCLUSIONS: Patients with PAPS, including young patients, have a high risk of recurrent thrombosis despite anticoagulation treatment. A careful risk assessment is mandatory to identify patients at risk for recurrence.


Assuntos
Anticoagulantes/uso terapêutico , Síndrome Antifosfolipídica/complicações , Isquemia Encefálica/diagnóstico , Medição de Risco/métodos , Acidente Vascular Cerebral/diagnóstico , Trombose/prevenção & controle , Adulto , Isquemia Encefálica/etiologia , Feminino , Humanos , Hipercolesterolemia/diagnóstico , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Acidente Vascular Cerebral/etiologia , Trombose/etiologia
6.
Lupus ; 26(8): 886-889, 2017 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-28162030

RESUMO

Objective People affected by chronic rheumatic conditions, such as systemic lupus erythematosus (SLE), frequently rely on the Internet and search engines to look for terms related to their disease and its possible causes, symptoms and treatments. 'Infodemiology' and 'infoveillance' are two recent terms created to describe a new developing approach for public health, based on Big Data monitoring and data mining. In this study, we aim to investigate trends of Internet research linked to SLE and symptoms associated with the disease, applying a Big Data monitoring approach. Methods We analysed the large amount of data generated by Google Trends, considering 'lupus', 'relapse' and 'fatigue' in a 10-year web-based research. Google Trends automatically normalized data for the overall number of searches, and presented them as relative search volumes, in order to compare variations of different search terms across regions and periods. The Menn-Kendall test was used to evaluate the overall seasonal trend of each search term and possible correlation between search terms. Results We observed a seasonality for Google search volumes for lupus-related terms. In the Northern hemisphere, relative search volumes for 'lupus' were correlated with 'relapse' (τ = 0.85; p = 0.019) and with fatigue (τ = 0.82; p = 0.003), whereas in the Southern hemisphere we observed a significant correlation between 'fatigue' and 'relapse' (τ = 0.85; p = 0.018). Similarly, a significant correlation between 'fatigue' and 'relapse' (τ = 0.70; p < 0.001) was seen also in the Northern hemisphere. Conclusion Despite the intrinsic limitations of this approach, Internet-acquired data might represent a real-time surveillance tool and an alert for healthcare systems in order to plan the most appropriate resources in specific moments with higher disease burden.


Assuntos
Comportamento de Busca de Informação , Internet/tendências , Lúpus Eritematoso Sistêmico/epidemiologia , Ferramenta de Busca/tendências , Mineração de Dados/tendências , Fadiga/epidemiologia , Fadiga/etiologia , Humanos , Recidiva , Estações do Ano
7.
Am J Obstet Gynecol ; 214(2): 273.e1-273.e8, 2016 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-26429521

RESUMO

BACKGROUND: Antiphospholipid syndrome is defined by the combination of thrombotic events and/or obstetric morbidity in patients who have tested positive persistently for antiphospholipid antibodies. With good treatment, approximately 70% of pregnant women with antiphospholipid syndrome will deliver a viable live infant. However, current management does not prevent all maternal, fetal, and neonatal complications of antiphospholipid syndrome. OBJECTIVES: This observational, retrospective, single-center cohort study aimed to assess pregnancy outcome in women with antiphospholipid antibodies who were treated with hydroxychloroquine in addition to conventional treatment during pregnancy. STUDY DESIGN: One-hundred seventy pregnancies in 96 women with persistent antiphospholipid antibodies were analyzed: (1) 51 pregnancies that occurred in 31 women were treated with hydroxychloroquine for at least 6 months before pregnancy, and the therapy continued throughout gestation (group A); (2) 119 pregnancies that occurred in 65 women with antiphospholipid antibodies that were not treated with hydroxychloroquine were included as controls (group B). RESULTS: Hydroxychloroquine-treatment was associated with a higher rate of live births (67% group A vs 57% group B; P = .05) and a lower prevalence of antiphospholipid antibodies-related pregnancy morbidity (47% group A vs 63% B; P = .004). The association of hydroxychloroquine with a lower rate of any complication in pregnancy was confirmed after multivariate analysis (odds ratio, 2.2; 95% confidence interval, 1.2-136; P = .04). Fetal losses at >10 weeks of gestation (2% vs 11%; P = .05) and placenta-mediated complications (2% vs 11%; P = .05) were less frequent in group A than group B. Pregnancy duration was longer in group A than group B (27.6 [6-40] vs 21.5 [6-40] weeks; P = .03). There was a higher rate of spontaneous vaginal labor in hydroxychloroquine-treated women compared with group B (37.3% vs 14.3%; P = .01). CONCLUSIONS: Despite the heterogeneity in the 2 groups in terms of systemic lupus erythematosus prevalence and previous pregnancy history, our results support the concept that women with antiphospholipid antibodies may benefit from treatment with hydroxychloroquine during pregnancy to improve pregnancy outcome. The addition of hydroxychloroquine to conventional treatment is worthy of further assessment in a proper designed randomized controlled trial.


Assuntos
Síndrome Antifosfolipídica/tratamento farmacológico , Antirreumáticos/uso terapêutico , Hidroxicloroquina/uso terapêutico , Complicações na Gravidez/tratamento farmacológico , Resultado da Gravidez , Adolescente , Adulto , Anticorpos Antinucleares/imunologia , Anticorpos Antifosfolipídeos/imunologia , Síndrome Antifosfolipídica/epidemiologia , Síndrome Antifosfolipídica/imunologia , Azatioprina/uso terapêutico , Estudos de Casos e Controles , Estudos de Coortes , Comorbidade , Parto Obstétrico/estatística & dados numéricos , Feminino , Glucocorticoides/uso terapêutico , Humanos , Modelos Logísticos , Lúpus Eritematoso Sistêmico/epidemiologia , Análise Multivariada , Razão de Chances , Prednisolona/uso terapêutico , Gravidez , Estudos Retrospectivos , Resultado do Tratamento , Adulto Jovem
8.
Lupus ; 25(5): 479-85, 2016 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-26657216

RESUMO

BACKGROUND: Patients with antiphospholipid syndrome (APS) often have thrombotic recurrences, sometimes despite appropriate ongoing anticoagulant treatment. Identifying APS vascular patients at high risk for thrombotic recurrences is still an unsolved issue. OBJECTIVES: To report the real-life experience of thrombotic recurrences in APS patients included in the Piedmont observational cohort study, and evaluate clinical and laboratory risk factors for thrombotic recurrences. PATIENTS: A multi-centre observational study was performed by enrolling 177 patients with vascular APS (primary APS in 99 subjects (56%)); the median follow-up was five years (range 1-26 years). RESULTS: The observed thrombotic recurrence rate was about 7.5/100 patient years in the first five years after the first thrombotic event. While the first recurrence often occurred (45%) in patients who were not on oral anticoagulant therapy (OAT), the second recurrence mainly occurred despite ongoing OAT (80%). However, due to the real-life observational nature of this study, treatment was based on the treating physician's judgement, and no structured therapeutic protocol was applied. Moreover, compliance with OAT was not available. No differences in antiphospholipid antibodies (aPL) profile were observed between patients with or without thrombotic recurrences, but a high risk aPL profile (Miyakis type 1 and 2a) was present in 96% of our patients, 26% of whom had triple positivity. Diabetes (p < 0.01, OR 10), inherited thrombophilia (p < 0.0078, OR 4) and OAT withdrawal were independent risk factors for recurrences. CONCLUSIONS: With the limit of a real-life observational cohort study, the thrombotic recurrence rate in APS was as high as 7.5/100 patient years in the first five years after the first thrombotic event. OAT discontinuation, diabetes and inherited thrombophilia, when associated with a high-risk aPL profile, are risk factors for thrombotic recurrences.


Assuntos
Síndrome Antifosfolipídica/epidemiologia , Trombose/epidemiologia , Administração Oral , Adolescente , Adulto , Idoso , Anticorpos Antifosfolipídeos/sangue , Anticoagulantes/administração & dosagem , Síndrome Antifosfolipídica/sangue , Síndrome Antifosfolipídica/diagnóstico , Síndrome Antifosfolipídica/tratamento farmacológico , Biomarcadores/sangue , Complicações do Diabetes/etiologia , Feminino , Humanos , Incidência , Itália/epidemiologia , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Razão de Chances , Estudos Prospectivos , Recidiva , Medição de Risco , Fatores de Risco , Trombofilia/complicações , Trombose/diagnóstico , Trombose/prevenção & controle , Fatores de Tempo , Resultado do Tratamento , Adulto Jovem
10.
Lupus ; 23(12): 1286-7, 2014 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25228728

RESUMO

Recently, we developed a risk score for antiphospholipid syndrome (APS) (Global APS Score or GAPSS). This score derived from the combination of independent risk factors for thrombosis and pregnancy loss, taking into account the antiphospholipid antibodies (aPL) profile (criteria and non-criteria aPL), the conventional cardiovascular risk factors, and the autoimmune antibodies profile. We demonstrate that risk profile in APS can be successfully assessed, suggesting that GAPSS can be a potential quantitative marker of APS-related clinical manifestations.


Assuntos
Síndrome Antifosfolipídica/complicações , Medição de Risco , Trombose/etiologia , Humanos
11.
Lupus ; 23(12): 1309-12, 2014 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25228735

RESUMO

Antibodies to prothrombin can be detected by ELISA using prothrombin coated onto irradiated plates (aPT) or the phosphatidylserine/prothrombin complex as antigen (aPS/PT) and they have been both related with the clinical manifestation of APS. Current evidence supports the concept that they belong to distinct populations of autoantibodies. Nevertheless, they can both be detected simultaneously in one patient. This mini-review will focus on data available on aPS/PT antibodies and their clinical utility in the diagnosis of APS.


Assuntos
Síndrome Antifosfolipídica/diagnóstico , Autoanticorpos/sangue , Fosfatidilserinas/imunologia , Protrombina/imunologia , Humanos , Inibidor de Coagulação do Lúpus/sangue , Fatores de Risco , Trombose/etiologia
14.
Lupus ; 21(7): 806-9, 2012 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-22635240

RESUMO

We report the experience from the Antiphospholipid Antibodies (aPL) Regional Consortium in northwest Italy, meant to support clinical research and foster collaboration among health professionals regarding the diagnosis and management of antiphospholipid syndrome (APS) patients. This cohort-study (APS Piedmont Cohort) was designed to register the clinical characteristics at inception and associated immunological manifestations at diagnosis (if any) of patients who strictly fulfilled the current criteria for APS, all recruited at the Piedmont and Valle d'Aosta regions. Clinical and laboratory data from 217 APS patients (171 with vascular events, 33 with pregnancy morbidity and 13 with both), from 16 centres within the geographical area were collected. Venous thrombosis was recorded in 45.6% of patients, arterial thrombosis in 35%, small-vessel thrombosis in 1.12% and mixed arterial and venous thrombosis in the remaining 19.4% of the cases. Pregnancy morbidity included 19 patients with unexplained fetal death beyond the 10th week of pregnancy, 17 with premature birth before the 34th week and 10 with three or more unexplained spontaneous abortions before the 10th week of gestation. This consortium represents an instrument by which to audit clinical practice, to provide counselling to local centres and to sustain future basic and clinical APS research.


Assuntos
Síndrome Antifosfolipídica/epidemiologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Síndrome Antifosfolipídica/imunologia , Feminino , Humanos , Itália/epidemiologia , Masculino , Pessoa de Meia-Idade , Gravidez , Complicações na Gravidez/epidemiologia , Fatores de Risco , Trombose/epidemiologia , Adulto Jovem
15.
Clin Exp Rheumatol ; 30(3): 409-13, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22513222

RESUMO

OBJECTIVES: To investigate the long-term effects of megadoses of intravenous immunoglobulin (IVIG) in a small cohort of patients with relapsing primary APS resistant to conventional treatments. METHODS: Five primary APS patients, 4 women, mean age 45.1 years (range 31-76 years), were considered eligible for IVIG therapy due to relapsing thrombotic events (4 recurrent venous thromboses, 2 ischaemic cerebral strokes, 2 pulmonary thromboembolisms, 1 thrombotic event on the vena cava filter), despite conventional therapy with anticoagulants. All patients had anti-nuclear antibodies at low-medium titre without other signs or symptoms of systemic lupus erythematosus. IVIG was combined with hydroxychloroquine and, in patients with cerebral strokes, acetylsalicylic acid. Three consecutive daily infusions of IVIG were administered intravenously at a dose of 0.4 g/kg/day every month for 3 months, followed by a single monthly infusion for 9 months. RESULTS: No further thromboses occurred in the 5 treated patients (mean follow-up 89.2 months, range 61-114). Visual analogue score (VAS 0-10) improved (mean 3.5, range 3.0-5.0, before, and 7.35, range 9.9-6.0, p= 0.05) after IVIG treatment. CONCLUSIONS: In a long-term (>5 years) open study in a small cohort of high risk primary APS patients, IVIG was found to be effective in preventing recurrent thrombosis. Full understanding of the mechanisms and efficacy, as well as the optimal doses of IVIG in APS patients with recurrent thrombosis, will require appropriately designed clinical studies. Presently, IVIG use is restricted by costs and limited availability.


Assuntos
Anticoagulantes/uso terapêutico , Síndrome Antifosfolipídica/tratamento farmacológico , Síndrome Antifosfolipídica/imunologia , Imunoglobulinas Intravenosas/uso terapêutico , Trombose/imunologia , Trombose/prevenção & controle , Adulto , Idoso , Anti-Inflamatórios não Esteroides/uso terapêutico , Antirreumáticos/uso terapêutico , Aspirina/uso terapêutico , Resistência a Medicamentos/imunologia , Quimioterapia Combinada , Feminino , Humanos , Hidroxicloroquina/uso terapêutico , Trombose Intracraniana/imunologia , Trombose Intracraniana/prevenção & controle , Masculino , Pessoa de Meia-Idade , Embolia Pulmonar/imunologia , Embolia Pulmonar/prevenção & controle , Prevenção Secundária , Acidente Vascular Cerebral/imunologia , Acidente Vascular Cerebral/prevenção & controle , Trombose Venosa/imunologia , Trombose Venosa/prevenção & controle
16.
J Virol ; 83(4): 2004-10, 2009 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-19073729

RESUMO

Increased transgene expression per vector genome is an important goal in the optimization of viral vectors for gene therapy. Herein we demonstrate that herpes simplex virus type 1 (HSV1) thymidine kinase (TK) gene sequences (1,131 bp) fused to the 3' end of lacZ increase transgene expression from high-capacity adenoviral vectors (HCAd), but not from first-generation (Ad) vectors. The woodchuck hepatitis virus posttranscriptional regulatory element (WPRE), in contrast, increased transgene expression levels from Ad but not HCAd vectors. The differential activity of the HSV1 TK gene and WPRE sequences was detected both in vitro and in vivo and suggests potentially different mechanisms of action or the interaction of these elements with vector genomic sequences.


Assuntos
Adenoviridae/genética , Vetores Genéticos , Herpesvirus Humano 1/enzimologia , Timidina Quinase/genética , Timidina Quinase/metabolismo , beta-Galactosidase/genética , beta-Galactosidase/metabolismo , Expressão Gênica , Vírus da Hepatite B da Marmota/genética , Proteínas Recombinantes de Fusão/genética , Proteínas Recombinantes de Fusão/metabolismo
17.
Clin Exp Allergy ; 40(11): 1642-7, 2010 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-20726860

RESUMO

BACKGROUND: Allergen exposure may increase airway oxidative stress, which causes lipid membrane peroxidation and an increased formation of 8-isoprostane. OBJECTIVE: The aim of the study was to investigate oxidative stress induced by allergen challenge in mild asthmatics, by measuring 8-isoprostane in exhaled breath condensate (EBC), and to examine their relationship with mediators derived from arachidonic acid. Methods 8-isoprostane, cysteinyl leukotrienes (cys-LTs) and prostaglandin E2 (PGE(2) ) concentrations in EBC were measured at baseline and after allergen challenge in 12 patients with mild allergic asthma sensitized to cat allergen. RESULTS: At 24 h after allergen challenge, compared with baseline values, EBC 8-isoprostane increased [48.64 pg/mL (44.14-53.61) vs. 21.56 pg/mL (19.92, 23.35), P<0.001], cys-LTs increased [27.37 pg/mL (24.09-31.10) vs. 13.28 pg/mL (11.32, 15.57), P<0.001] and PGE(2) decreased [18.69 pg/mL (12.26, 28.50) vs. 39.95 pg/mL (34.37, 46.43), P<0.001]. The trend of increasing 8-isoprostane after allergen challenge was significantly correlated with the trend of increasing cys-LTs (R(2) =0.85, P<0.001) whereas the trend of decreasing PGE(2) after allergen challenge was significantly correlated with the trend of increasing cys-LTs (R(2) =0.52, P=0.001). CONCLUSIONS AND CLINICAL RELEVANCE: The increase in EBC 8-isoprostane observed after allergen challenge indicates that allergen exposure increases airway oxidative stress in allergic asthma. The strict correlation between cys-LTs and 8-isoprostane underlines the relationship between allergic inflammation and oxidative stress. A shift of arachidonic acid metabolism towards lipoxygenase pathway is induced by the allergen challenge. Airway oxidative stress occurs after allergen challenge even in patients with mild intermittent allergic asthma.


Assuntos
Alérgenos/administração & dosagem , Asma/metabolismo , Testes Respiratórios , Expiração , Peroxidação de Lipídeos , Pulmão/metabolismo , Estresse Oxidativo , Administração por Inalação , Adulto , Animais , Asma/diagnóstico , Asma/imunologia , Asma/fisiopatologia , Biomarcadores/metabolismo , Estudos de Casos e Controles , Gatos , Dinoprosta/análogos & derivados , Dinoprosta/metabolismo , Dinoprostona/metabolismo , Feminino , Volume Expiratório Forçado , Humanos , Leucotrienos/metabolismo , Pulmão/imunologia , Pulmão/fisiopatologia , Masculino , Pessoa de Meia-Idade , Óxido Nítrico/metabolismo , Índice de Gravidade de Doença , Fatores de Tempo , Adulto Jovem
18.
Semin Arthritis Rheum ; 50(3): 553-556, 2020 06.
Artigo em Inglês | MEDLINE | ID: mdl-32089355

RESUMO

BACKGROUND: The current treatment to prevent pregnancy morbidity (PM) associated with antiphospholipid antibodies (aPL) is based on the use of low dose aspirin and low molecular weight heparin (henceforth defined as standard of care (SoC) treatment). Despite the SoC, up to 30% of women with aPL continue to have pregnancy complications. The global antiphospholipid syndrome (APS) score (GAPSS) is a tool to quantify the risk for the aPL-related clinical manifestations. In this study, we investigated the individual clinical response to SoC in women with aPL after stratifying them according to their GAPSS. METHODS: One-hundred-fourty-three women (352 pregnancies) with aPL ever pregnant treated with SoC therapy were included. The patients GAPSS was then grouped according to the patients' GAPSS into low risk (< 6), medium risk (6-11), and high risk (≥12). RESULTS: The live birth rate was 70.5% (248 out of the 352 pregnancies), 45 patients (31%) experienced at least one event of PM, defined as early or late. Patients were stratified according to GAPSS values, in order to identify a low risk group (GAPSS <6, n = 72), a medium risk group (GAPSS 6-11, n = 66) and a high risk group (GAPSS ≥12, n = 5). When considering patients who ever experienced any PM while treated with SoC, all patients in the high risk group experienced PM, while patients in the medium group had a significant higher rate of PM when compared to the low risk group [29 (43.9%) patients V.s. 11 (15.3%), respectively; p < 0.001]. When analysing the number of pregnancies in the three groups, patients in the high risk group had significantly lower live birth rates, when compared to the other groups [11 (40.7%) live births vs. 100 (62.1%) and 137 (82.5%), respectively; p < 0.05]. Furthermore, patients with medium risk group also had significantly lower live birth rates, when compared to the lower risk group (p < 0.001). CONCLUSIONS: GAPSS might be a valuable tool for to identify patients with a higher likelihood of response to SoC.


Assuntos
Anticorpos Antifosfolipídeos/efeitos dos fármacos , Síndrome Antifosfolipídica/tratamento farmacológico , Aspirina/uso terapêutico , Fibrinolíticos/uso terapêutico , Heparina de Baixo Peso Molecular/uso terapêutico , Adulto , Feminino , Humanos , Nascido Vivo/epidemiologia , Gravidez , Complicações na Gravidez/tratamento farmacológico , Estudos Retrospectivos
20.
Int J Immunopathol Pharmacol ; 22(4): 1027-34, 2009.
Artigo em Inglês | MEDLINE | ID: mdl-20074466

RESUMO

Hodgkin's disease (HD) is a malignant lymphoma with frequent mediastinal involvement, characterized by a significant inflammatory infiltration. Exhaled nitric oxide (FENO), is present in healthy humans, and has been proven to be increased in eosinophilic diseases such as allergic asthma. We investigated whether FENO is increased in mediastinal HD and whether NO is produced by lymphoma tissue. To this aim FENO was measured in 56 HD patients, 17 with and 39 without bulky mediastinal involvement, in the period from January 2007 to December 2008. Thirty-seven patients were reassessed after remission. Lymph node biopsies of 10 patients were evaluated for inducible (iNOS) and constitutive (eNOS) nitric oxide synthase expression by immunohistochemistry. FENO resulted significantly related to the mediastinal mass maximum diameter (p=0.009) and was significantly higher in patients with as compared to those without bulky mediastinal disease (38.7 ppb, CI 95% 19.3-58.0, versus 20.7 ppb, CI 95% 16.6-24.7; p=0.009). iNOS and eNOS immunoreactivity was observed in tumour and inflammatory cells (eosinophils and histiocytes). Only in patients with bulky mediastinal HD there was a significant decrease in FENO (from 50.4 ppb CI 95% 18.0-82.8 to 11.1 ppb CI 95% 4.4-17.8, p=0.011). In conclusion, high FENO and NOS expression in lymph-nodes indicate that NO is a component of the inflammatory network of HD. FENO may be proposed for the assessment and follow up of bulky mediastinal HD patients.


Assuntos
Testes Respiratórios , Expiração , Doença de Hodgkin/enzimologia , Linfonodos/enzimologia , Neoplasias do Mediastino/enzimologia , Óxido Nítrico Sintase Tipo III/metabolismo , Óxido Nítrico Sintase Tipo II/metabolismo , Óxido Nítrico/metabolismo , Adolescente , Adulto , Idoso , Antineoplásicos/uso terapêutico , Biópsia , Feminino , Doença de Hodgkin/patologia , Doença de Hodgkin/fisiopatologia , Doença de Hodgkin/terapia , Humanos , Imuno-Histoquímica , Linfonodos/patologia , Masculino , Neoplasias do Mediastino/patologia , Neoplasias do Mediastino/fisiopatologia , Neoplasias do Mediastino/terapia , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Radioterapia Adjuvante , Espirometria , Resultado do Tratamento , Regulação para Cima , Adulto Jovem
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