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Alelos HLA-DR em pacientes com poliarterite nodosa e poliangite microscopica / Alleles HLA-DR in patients with polyarteritis nodosa and microscopic polyangiitisFreire, Alzirton de Lira 14 August 2018 (has links)
Orientadores: Sandra Regina M. Fernandes, Manoel Barros Bertolo / Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Ciencias Medicas / Made available in DSpace on 2018-08-14T08:19:53Z (GMT). No. of bitstreams: 1
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Previous issue date: 2009 / Resumo: O presente estudo avaliou a freqüência dos alelos HLA-DR em um grupo de 29 pacientes brasileiros caucasóides com PAN ou poliangiíte microscópica e investigou uma possível relação entre os alelos HLA-DR, os índices de atividade e gravidade e as manifestações clínicas de doença. O diagnóstico de cada paciente baseou-se nos critérios do Colégio Americano de Reumatologia (ACR) para a PAN e da Conferência Internacional de Consenso de Chapel Hill (CHCC) para poliangiíte microscópica. A atividade e a gravidade da doença foram mensuradas retrospectivamente, por ocasião do diagnóstico, utilizando-se, respectivamente, o Birmingham Vasculitis Activity Score (BVAS) e o Five-Factors Score (FFS). De acordo com o BVAS, os pacientes foram divididos em dois grupos: aqueles com BVAS < 22 e outro com BVAS ³ 22. De acordo com o FFS, dois grupos foram definidos: 0, quando nenhum fator de pior prognóstico foi notado e ³ 1 quando 1 ou mais fatores estavam presentes. As manifestações clínicas presentes por ocasião do diagnóstico foram avaliadas de acordo com o sistema orgânico acometido. Cinquenta e nove indivíduos caucasóides, saudáveis, da mesma população, formaram o grupo controle. A tipagem dos alelos HLA-DR foi realizada através da técnica de amplificação pela reação em cadeia da polimerase (PCR), utilizando-se sequências específicas de primers DR de baixa resolução. No grupo total de casos, encontrou-se uma maior frequência estatisticamente significativa de HLADRB1* 16 (p=0.023) e DRB4*01 (p=0.048) nos pacientes com BVAS ³ 22. Os pacientes com FFS=0 apresentaram uma maior frequência estatisticamente significativa de HLA-DRB1*03. A frequência de HLA-DRB1*11 e/ou B1*12 (p=0.046), B1*13 (p=0.021) e B3 (p=0.008) foi significativamente maior nos pacientes com envolvimento do trato gastrintestinal e a de DRB1*15 e/ou DRB1*16 (p=0.035) e B5 (p=0.035) nos pacientes com acometimento renal. Nossos resultados sugerem que os alelos HLA-DRB1*15/B1*16, B4*01, B1*03, B1*11/B1*12, B1*13, B3 e B5 podem influenciar a expressão clínica da PAN e da poliangiíte microscópica na nossa população. / Abstract: The aim of this study was to evaluate the frequency and clinical associations of HLA-DR alleles in Brazilian Caucasian patients with polyarteritis nodosa (PAN) or microscopic polyangiitis (MPA). We evaluated 29 Caucasian patients with vasculitis classified as PAN or MPA according to the American College of Rheumatology (ACR) 1990 Criteria and Chapel Hill Consensus Conference (CHCC) nomenclature for vasculitis. HLA-DR alleles were typed using polymerase chain reaction-amplified DNA, hybridized with sequence specific low resolution primers. DNA obtained from 59 Caucasian healthy blood donors were used as control. In order to evaluate if a specific HLA may have influence on the clinical profile of those diseases, we also divided the patients according to Birmingham vasculitis score (BVAS) and Five-Factors Score (FFS) at the time of diagnosis. Increased frequency of HLA-DRB1*16 (p=0.023) and DRB4*01 (p=0.048) was found in patients with higher disease activity at the time of diagnosis (BVAS ³ 22). Patients with less severe disease (FFS=0) had a higher frequency of HLA-DRB1*03 (p=0.011). Patients with gastrointestinal tract involvement had significantly increased frequency of HLA-DRB1*11 or B1*12 (p=0.046), B1*13 (p=0.021) and B3 (p=0.008). In contrast, patients with renal disease, had higher frequency of DRB1*15 or DRB1*16 (p=0.035) and B5 (p=0.035). Our results suggest that HLA-DR alleles may influence PAN and MPA clinical expression and outcome. / Doutorado / Clinica Medica / Mestre em Clinica Medica
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Disfunção cognitiva no lúpus eritematoso sistêmico juvenil = um estudo comparando três critérios de definição / Cognitive dysfunction in systemic lupus erythematosus : a study comparing three criteria definitionBellini, Bruna Siqueira, 1982- 21 August 2018 (has links)
Orientadores: Simone Appenzeller, Paula Teixeira Fernandes / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Ciências Médicas / Made available in DSpace on 2018-08-21T07:32:41Z (GMT). No. of bitstreams: 1
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Previous issue date: 2012 / Resumo: O lúpus eritematoso sistêmico (LES) é uma doença autoimune, ainda sem cura, causada por uma disfunção do sistema imunológico. Aproximadamente 15% de todos os casos de LES são diagnosticados na faixa etária pediátrica. Queixas cognitivas não específicas são freqüentes, afetam de 30 a 78% das crianças e adolescentes, e podem ocorrer mesmo na inatividade da doença ou na ausência de outras manifestações neuropsiquiátricas. O objetivo desse estudo foi verificar a frequência de disfunção cognitiva em uma amostra de pacientes com LES juvenil e identificar associações com aspectos clínico-laboratoriais e de tratamento. Pacientes e Métodos: Foi realizado um estudo transversal, incluindo pacientes com idade de inicio da doença ? 16 anos e controles pareados por sexo, idade e escolaridade. Os sujeitos foram divididos em 2 grupos, de acordo com a idade à avaliação: grupo WISC - idade ? 16 anos e 9 meses; grupo WAIS - idade ? 16 anos e 10 meses. Foi aplicada uma bateria de pesquisa constituída por testes adaptados para a população juvenil, selecionados a partir da bateria recomendada pelo Colégio Americano de Reumatologia para avaliação de adultos. Quinze subtestes foram utilizados para avaliar 13 funções cognitivas. Disfunção cognitiva foi identificada através de três diferentes critérios, de acordo com o ponto de corte adotado e o número requerido de funções alteradas. Sintomas de ansiedade e depressão foram avaliados pelas escalas Beck. Atividade da doença foi avaliada pelo SLEDAI e o dano cumulativo pelo SLICC. Presença de anticorpos e uso de medicação também foram avaliados. Análise estatística foi realizada pelo Statistical Package for Social Sciences (SPSS) e foi adotado nível de significância 5% (p<0,05). Resultados: Sessenta e quatro pacientes e 71 controles foram incluidos. A média de idade dos pacientes à avaliação no grupo WISC foi de 13,43±2,10 (média±DP; variação 8-16 anos), com idade média de início da doença de 11,23±3,21 e duração de 2,20±2,63 anos. No grupo WAIS a média de idade à avaliação foi de 20,34±3,42 (variação: 16-29), com idade média de início da doença 13,76±4,08 e duração de 6,59±4,72 anos. Atividade da doença segundo o SLEDAI foi identificada em 40% dos pacientes no grupo WISC e em 48,3% no grupo WAIS. A frequência de disfunção variou de 11,4-60% no grupo WISC e de 10,3-41,4% no grupo WAIS. O critério 1 (disfunção = escore maior que 2DP abaixo da média normativa em 1 função cognitiva ou escores entre 1 e 2 DP abaixo da média em 2 ou mais funções) foi o que contabilizou a maior porcentagem de pacientes com déficit em ambos os grupos. O grupo WAIS apresentou diferença estatisticamente significativa na frequência de disfunção medida pelos critérios 1 e 2. No grupo todo, essa diferença se manteve somente para o critério 2 (disfunção = escore superior a 2 DP abaixo da média normativa em 1 ou mais funções cognitivas e declínio cognitivo = escores entre 1,5 e 1,9 DP abaixoda média em 1 ou mais funções). Velocidade de processamento e flexibilidade mental foram as funções mais afetadas no grupo WISC; no grupo WAIS, velocidade de processamento, destreza motora e memória semântica. Associação com variáveis clínico-laboratoriais e de tratamento diferiram entre os grupos de acordo com o critério de definição adotado. Não houve associação entre disfunção cognitiva e escolaridade, idade de início/duração da doença, dano cumulativo, presença de anticorpos ds-DNA, Ro e Sm, uso de cloroquina e de imunossupressores. Conclusão: Alterações no critério de definição de disfunção cognitiva acarretaram alterações importantes nas taxas de frequência / Abstract: Systemic Lupus Erythematosus (SLE) is an autoimmune disease, caused by an immune system dysfunction. Approximately, 15% of all cases of SLE are diagnosed in childhood. Non-specific cognitive deficits are common, affecting 30-78% of children and adolescents, and occur even in inactivity of disease or other neuropsychiatric manifestations. The aim of this study was to determine the frequency of cognitive impairment in patients with juvenile SLE and to identify the relationship with clinical and treatment aspects. Patients and Methods: We performed a cross-sectional study including patients with age of onset of disease ? 16 years and controls with the same gender, age and education. The subjects were divided in two groups according to the age evaluation: WISC group - age evaluation ? 16 years and 9 months; WAIS group - age evaluation ? 16 years and 10 months. We performed a battery of tests, selected from the American College of Rheumatology battery. Fifteen subtests were used to evaluate 13 cognitive functions. Cognitive dysfunction has been identified using three different criteria, according to the cutoff adopted and the number of abnormal functions required. Symptoms of anxiety and depression were assessed by the Beck scales. Disease activity was assessed by SLEDAI and cumulative damage by SLICC. The presence of antibodies and medication were also evaluated. Statistical analysis was performed using SPSS and significance level was 5% (p<0.05). Results: Sixty-four patients and 71 controls were included. The mean age of patients in the assessment WISC group was 13.43 ± 2.10 (mean ± SD, range 8-16 years) with a mean age of onset of 11.23 ± 3.21 and duration of 2.20 ± 2.63 years. In the WAIS group, the mean age at evaluation was 20.34 ± 3.42 (range: 16-29), with a mean age of onset and duration 13.76 ± 4.08 to 6.59 ± 4.72 years. Disease activity according to SLEDAI was identified in 40% of patients in WISC and 48.3% in WAIS. The frequency of dysfunction ranged from 11.4 to 60% in WISC and from 10.3 to 41.4% in WAIS. The criteria 1 (dysfunction = score of more than 2 SD below the standardized mean in 1 cognitive function, or scores between 1 and 2 SD below the mean in 2 or more functions) had the largest percentage of patients with deficits in both groups. The WAIS group showed a statistically significant difference in the frequency of dysfunction measured by criteria 1 and 2. In the whole group, this difference remained only for the criteria 2 (dysfunction = score more than 2 SD below the normative mean in 1 or more cognitive functions and cognitive decline = scores between 1.5 and 1.9 SD below published norms in 1 or more functions). The most affected cognitive functions in the WISC group were: processing speed and mental flexibility; in the WAIS group were processing speed, motor skills and semantic memory. The relationship with clinical-laboratory variables and treatment differed between the groups, according to the definition criteria adopted. There was no relation between cognitive impairment and education, age of onset / duration of illness, cumulative damage, presence of antibodies ds-DNA, Ro and Sm, chloroquine and use of immunosuppressive therapy. Conclusion: Changes in criteria for defining cognitive dysfunction led to significant changes in frequency rates / Mestrado / Saude da Criança e do Adolescente / Mestra em Ciências
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Using the International Classification of Function, Disability and Health (ICF) to Compare Areas of ANCA-Associated Vasculitits (AAV) Measured in Clinical Trials to those Important to Patients with AAV and Clinicians who are Involved in their CareMilman, Nataliya January 2014 (has links)
Background: The International Classification of Function, Disability and Health (ICF) describes health using 1424 categories from 4 components: body functions (BF), body structures (BS), activities and participation (AP) and contextual factors (environmental (EF) and personal (PF)). In this study the ICF was used to describe and compare aspects of ANCA-Associated Vasculitis (AAV) measured in clinical trials and those important to clinicians and patients. Methods: Individual interviews and focus groups were used to capture the perspective of AAV patients. Clinicians’ perspective was obtained with an email-based questionnaire. Outcomes used in AAV randomized trials were extracted from results of a systematic review of literature. Identified concepts were mapped to the ICF according to previously published ICF linking rules, and the resulting lists of relevant AAV outcomes were compared descriptively. Results: Twelve individual interviews and 2 focus groups represented the patient perspective while responses from 27 clinicians yielded the clinicians’ perspective. Systematic literature review identified 67 clinical trials and 28 abstracts from which measured outcomes were extracted. All three perspectives demonstrated detailed coverage of ICF components BF and BS. In the component AP patients and clinicians identified similar ICF categories, a number of which were under-sampled by AAV trials. Contextual factors appear to be significantly more relevant to patients than clinicians and researchers. Conclusion: Patients and clinicians have different views of the relevance of various AAV outcomes, and these views differ from what is measured in clinical trials of AAV. This highlights the need for a broad and standardized approach to developing and selecting outcomes for complex medical conditions such as AAV.
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Epidémiologie de la vascularite à IgA (purpura rhumatoïde) : incidence, étiologie / Epidemiology of IgA Vasculitis : incidence, etiologyPiram, Maryam 03 July 2017 (has links)
Le purpura rhumatoïde, récemment renommé vascularite à IgA (IgAV) est, en Occident, la vascularite systémique la plus fréquente de l’enfant. Cette vascularite leucocytoclasique IgA-médiée des petits vaisseaux touche principalement la peau, les articulations, le tube digestif et les reins. L’évolution est le plus souvent favorable mais certains patients peuvent développer une pathologie rénale chronique. L’étiologie de l’IgAV étant inconnue, les études épidémiologiques sont importantes afin de générer des hypothèses étiologiques. La première partie de cette thèse consacrée à l’épidémiologie de l’IgAV, consiste en une revue de la littérature résumant l’ensemble des connaissances actuelles d’épidémiologie descriptive de l’IgAV ainsi que les facteurs de risque génétiques ou environnementaux rapportés. La seconde partie est une étude prospective sur 3 ans décrivant les caractéristiques épidémiologiques des cas incidents d’IgAV survenus chez les enfants habitant le département du Val de Marne, localisé au sud-est de Paris. Grâce à une analyse capture–recapture à 4 sources, nous avons estimé l’incidence annuelle de l’IgAV à 30/100 000 enfants < 15 ans. La faible variation de l’incidence de l’IgAV dans le temps et dans l’espace et l’existence d’une saisonnalité de la maladie suggèrent un facteur déclenchant infectieux ubiquitaire et non émergent. La troisième partie de cette thèse, s’intéresse à la question du rôle de la vaccination dans le déclenchement de l’IgAV. En l’absence d’études pharmaco-épidémiologiques robustes, nous avons réalisé une étude en case-crossover, qui est une variante d’une étude cas–témoin traditionnelle afin d’étudier l’effet de la vaccination sur le risque à court terme d’IgAV. Nos résultats indiquent que les vaccins communément réalisés chez l’enfant n’augmentent pas significativement le risque d’IgAV dans les 3 mois suivant la vaccination. Les résultats de cette thèse améliorent nos connaissances de l’épidémiologie de l’IgAV et suggèrent que les infections, mais pas les vaccins, jouent un rôle dans l’étiologie de la maladie. D’autres études épidémiologiques sont toutefois nécessaires, en particulier dans les populations non étudiées et multi-ethniques, afin de mieux cerner le rôle des facteurs génétiques dans la survenue de la maladie. / Henoch-Schönlein purpura, recently renamed immunoglobulin A vasculitis (IgAV), is the most common systemic vasculitis in childhood in Western countries. The sites predominantly affected by this IgA-mediated, leukocytoclastic, small-vessel vasculitis are the skin, joints, gastrointestinal tract and kidneys. IgAV is often self-limiting, although chronic kidney disease can develop in some patients. Because the cause of IgAV is unknown, epidemiological studies are important to provide clues to understanding its etiology. The first part of this thesis, devoted to the epidemiology of IgAV, is a literature review summarizing the currently available knowledge on descriptive epidemiological aspects of IgAV and environmental and genetic risk determinants. The second part is a prospective survey describing the epidemiological characteristics of IgAV in Val de Marne, located in the southeast suburbs of Paris, France. With a 3-year study and 4-source capture–recapture analysis, we estimated the annual incidence of IgAV at 30/100,000 children (age ≤ 15 years). The few secular and geospatial variations in IgAV incidence and the observation of a seasonal pattern in IgAV incidence lend support to a role for a ubiquitous and communicable infectious trigger. The third part of the thesis addresses the concern suggested mainly by case reports of vaccination as a potential trigger of IgAV. In light of the lack of robust pharmacoepidemiological studies, we performed a case–crossover study, a variant of a traditional case–control study, to investigate the effect of vaccination on short-term risk of IgAV. The results indicated that vaccines commonly administered to children do not significantly increase the risk of IgAV in the 3 months after vaccine exposure. The results of this thesis enhance our knowledge of IgAV epidemiology and suggest that infections but not vaccines may play a role in the etiology of the disease. More epidemiological investigation is required, particularly in understudied areas and multiethnic populations, to gain insight in the burden of genetics in IgAV etiology.
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Analyse von kardiovaskulären Risikofaktoren bei Patienten mit ANCA-assoziierten Vaskulitiden unter besonderer Berücksichtigung von Lipoprotein (a) / Management of cardiovascular risk factors in patients with ANCA-associated vasculitis with special consideration of lipoprotein (a)Kröplin, Juliane 02 May 2019 (has links)
No description available.
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Detailed analysis of Japanese patients with adenosine deaminase 2 deficiency reveals characteristic elevation of type II interferon signature and STAT1 hyperactivation / 日本人ADA2欠損症患者における詳細な発現解析によりII型インターフェロンシグネチャーの特異的上昇とSTAT1過剰活性化が明らかとなったNihira, Hiroshi 23 March 2022 (has links)
京都大学 / 新制・課程博士 / 博士(医学) / 甲第23796号 / 医博第4842号 / 新制||医||1058(附属図書館) / 京都大学大学院医学研究科医学専攻 / (主査)教授 森信 暁雄, 教授 椛島 健治, 教授 杉田 昌彦 / 学位規則第4条第1項該当 / Doctor of Medical Science / Kyoto University / DFAM
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Expression von Lymphotaktin (XCL1) bei der Wegener'schen Granulomatose / Expression of Lymphotaktin (XCL1) in Wegener's GranulomatosisBrandt, Philip 18 April 2012 (has links)
No description available.
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Untersuchungen zu zellulären Mechanismen bei ANCA-assoziierten nekrotisierenden VaskulitidenKettritz, Ralph 14 July 2000 (has links)
Gegenstand der vorliegenden Arbeit waren Untersuchungen zu zellulären Mechanismen ANCA-assoziierter systemischer Vaskulitiden. Es wurde dabei zunächst die ANCA-induzierte Aktivierung neutrophiler Granulozyten untersucht. Es konnte gezeigt werden, daß die Quervernetzung der ANCA-Antigene auf der Oberfläche neutrophiler Granulozyten die Generation von Sauerstoffradikalen auslöst. Der zweite Komplex beschäftigte sich mit der Regulation der Apoptose neutrophiler Granulozyten, die einen zentralen Mechanismus für die Auflösung von Entzündungen darstellt. Die Ergebnisse zeigen, daß die Apoptose neutrophiler Granulozyten durch IL-8 verzögert und durch TNF-alpha akzeleriert wird. Dabei führt die Interaktion mit extrazellulären Matrixsubstanzen wie Fibronektin zu einer weiteren Akzeleration der TNF-alpha-induzierten Apoptose. Die Bedeutung der Tyrosin Phosphorylierung für diesen Prozess wird gezeigt, und Ly-GDI, ein regulatorisches Protein für kleine GTPase-Proteine der Ras-Superfamilie, wurde als ein Substrat der Tyrosin-Kinasen charakterisiert. Letztlich konnten neue Kandidaten-Proteine für die Regulation der Lebensspanne neutrophiler Granulozyten identifiziert werden. / Mechanisms of ANCA-associated vasculitis were studied. First, the activation of human neutrophils by ANCA was investigated. The data demonstrate the important role of cross-linking ANCA-antigens by the auto-antibodies on the cell surface for the initiation of a respiratory burst. The second issue was the regulation of neutrophil apoptosis that is central to the resolution of inflammation. These experiments indicate that apoptosis was delayed by IL-8 and accelerated by TNF-alpha. Interaction with extracellular matrix proteins, such as fibronectin resulted in further acceleration of apoptosis. The important role of protein tyrosine phosphorylation was demonstrated, and Ly-GDI, a regulator of GTPase-proteins of the ras-superfamily was characterized. Finally, proteins that may control the life span of neutrophils were identified.
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Estudo da trombose microvascular em biópsias pulmonares de pacientes com granulomatose de Wegener / Study of microvascular thrombosis in lung biopsies of patients with Wegeners granulomatosisSantana, Alfredo Nicodemos da Cruz 12 August 2008 (has links)
Santana, ANC. Estudo da trombose microvascular em biópsias pulmonares de pacientes com Granulomatose de Wegener. [tese]. São Paulo: Faculdade de Medicina, Universidade de São Paulo; 2008. A granulomatose de Wegener (GW) é associada com eventos trombo-embólicos. Neste trabalho, quantificamos os trombos em artérias pulmonares de pequeno/médio calibre de pacientes com GW (n:24), comparando com um grupo Controle normal (n:16). O resultado mostrou que a área total das artérias no grupo GW foi similar a do grupo Controle. Já a área do trombo foi significativamente maior no grupo GW em relação ao Controle. Em contrapartida, a área livre do lúmen do vaso foi significativamente menor no grupo GW em comparação ao Controle. Concluindo, este estudo demonstra uma obstrução da microcirculação pulmonar na GW, sugerindo um papel da trombose in situ na fisiopatologia desta doença / Wegeners granulomatosis (GW) is associated with thromboembolic events. In this work, we quantified the thrombus in small/medium-sized pulmonary arteries of patients with GW (n:24) compared to normal controls (n:16). The results showed that the GW and control arteries were similar regarding total area. The thrombus area was significantly increased in GW compared to controls; in contrast, the free lumen area was significantly decreased in GW compared to controls. In summary, this study shows obstruction of microvascular bed in GW, suggesting a possible role of thrombosis in situ in pathophysiology of this vasculitis
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Efeitos agudos e crônicos do exercício físico aeróbio em pacientes com arterite de Takayasu / Acute and chronic effects of aerobic exercise in Takayasu arteritis patientsOliveira, Diego Sales de 30 June 2016 (has links)
Introdução: A arterite de Takayasu (AT) é uma vasculite sistêmica rara caracterizada por oclusão, ectasias, aneurismas e estenose da aorta e seus ramos principais. Consequentemente, pode levar a uma redução no pulso de uma ou mais artérias, diferença nos níveis de pressão sistólica dos membros, presença de sopros (cervicais, cardíacos, axilares e/ou abdominais), além da presença de claudicação vascular (membros e/ou vísceras abdominais) e isquemia periférica, o que por sua vez pode levar a uma maior limitação funcional e consequentemente ao sedentarismo. Esses acometimentos podem, em última análise, levar a uma diminuição da capacidade funcional, da capacidade aeróbia e da força muscular, o que está associado com aumento no risco de mortalidade, assim como já foi demonstrado em outras doenças com manifestações clínicas semelhantes, como a doença arterial periférica (DAP). Nesse sentido, o exercício tem sido apontado como uma estratégia interessante para reduzir esses fatores de risco em pacientes com doenças autoimunes inflamatórias. Entretanto, em pacientes com AT, nenhum estudo até o momento, avaliou a capacidade funcional, a capacidade aeróbia e a força muscular desses pacientes, bem como a segurança da prescrição do exercício por meio da resposta inflamatória a uma sessão aguda de esforço. Da mesma forma, o treinamento aeróbio poderia ser uma potencial estratégia em melhorar essas condições, no entanto, o mesmo ainda foi avaliado nesses pacientes. Objetivos: Avaliar os efeitos agudos e crônicos do exercício físico aeróbio em pacientes com AT em remissão. Métodos: Em um primeiro momento, a capacidade aeróbia, força e função muscular, qualidade de vida, prejuízo de caminhada (WIQ) e função endotelial, foram avaliadas em 11 pacientes com AT e comparados com 10 controles saudáveis (GC) que foram pareados por sexo, idade e IMC. Além disso, foi avaliada e comparada a cinéticas das citocinas (IL1ra, IL-6, IL-10, IL-12p70, TNF-alfa, VEGF e PDGF AA) além dos receptores solúveis de TNF (sTNFRI e sTNFRII) em resposta a uma sessão de exercício aeróbio (~ 60% do VO2 pico). Uma sub-amostra do grupo AT (n = 6) foi submetida a um programa de treinamento aeróbio por 12 semanas (2 vezes por semana, de 30 a 50 minutos, frequência cardíaca (FC) entre os limiares ventilatórios). Antes e depois do treinamento, a sessão de exercício aeróbio agudo foi realizada e as citocinas e os receptores do TNF solúveis foram avaliados como descrito acima. A capacidade aeróbia, força e função muscular, função endotelial, qualidade de vida e o questionário de caminhada foram avaliados. As citocinas e os sTNFRs foram avaliadas por multiplex. Resultados: Pacientes com AT apresentaram uma capacidade cardiorrespiratória, força e função muscular, qualidade de vida e o questionário WIQ prejudicados quando comparados ao grupo controle. Não houve diferença significativa para a função endotelial entre os dois grupos. De forma geral, uma sessão de exercício aeróbio não afeta de forma diferente a cinética de citocinas em pacientes com AT e seus pares saudáveis. O treinamento aeróbio levou a uma melhora da força e função muscular e do questionário WIQ nos pacientes com AT, enquanto a capacidade aeróbia, função endotelial e qualidade de vida permaneceram inalteradas. O programa de treinamento aeróbio não exacerbou as concentrações de citocinas inflamatórias em pacientes com AT; pelo contrário, a citocina pro-inflamatória TNF-alfa foi diminuídatanto em repouso como após uma sessão de exercício aeróbio. Além disso, o treinamento aeróbio aumentou os fatores pró-angiogênicos VEGF (em repouso) e PDGF AA (em repouso e em resposta para a sessão de exercício aeróbico). Conclusões: Pacientes com AT apresentam a capacidade aeróbia, força e função muscular prejudicada comparada a sujeitos saudáveis. Uma sessão de exercício aeróbio não exacerbou a inflamação em pacientes com AT. Além disso, o treinamento aeróbio pode ser uma intervenção bem tolerada, segura e eficiente capaz de induzir efeitos imunomodulatórios e pró-angiogênicos, como também aumentar a força e a função muscular em pacientes com AT / Background: Takayasu arteritis (TA) is a rare systemic vasculitis characterized by occlusion, ectasia, aneurysms and stenosis of the aorta and its main branches. Consequently, it can lead to a reduction in pulse of one or more arteries, a blood pressure difference between arms, bruits presence (neck, heart, axillary and/or abdominal arteries), and the presence of vascular claudication (limbs and/or abdominal arteries) and peripheral ischemia, which in turn can lead to a greater functional limitation and consequently inactivity. These manifestations may cause a decrease in aerobic capacity, muscular strength and muscular function, which is associated with increased risk of mortality, as has been shown in other diseases with similar clinical manifestations, such as peripheral arterial disease (PAD). In this scenario, exercise emerges as a promising therapeutic tool to partially offset these adverse outcomes, similarly as it occurs in many other inflammatory rheumatic diseases. However, in patients with TA, no study to date has evaluated aerobic capacity, muscular strength and function in this patients, as well as the safety of exercise prescription in inflammatory response to an acute session of aerobic exercise. Similarly, aerobic training could be a potential strategy to improve such conditions in these patients, however, until date, no study has evaluated the effects of exercise training program in this patients. Objectives: To evaluate the acute and chronic effects of aerobic exercise in patients with TA in remission. Methods: At first, aerobic capacity, muscle strength and function, quality of life, walking impairment questionnaire (WIQ) and endothelial function were evaluated in 11 patients with TA and compared with 10 healthy controls (HC) that were matched for sex , age and body mass index (BMI). Furthermore, it was evaluated and compared the cytokines kinetics (IL1ra, IL-6, IL-10, IL-12p70, TNF-alfa, VEGF and PDGF) and soluble TNF receptors (sTNFRI and sTNFRII) in response to an acute session of aerobic exercise (~ 60% VO2 peak). A sub-sample from TA group (n=6) underwent a 12-week exercise training program (12 weeks, 2 times a week, 30 to 50 minutes, heart rate (FC) between the ventilatory threshold). Before and after training, the acute session of aerobic exercise was performed and cytokines and soluble TNF receptors were assessed as described above. Muscle strength and function, aerobic capacity, endothelial function, quality of life, and walking impairment scores were evaluated. Cytokines and sTNFRs were assessed by multiplex. Results: TA patients showed impaired aerobic capacity, muscle strength and function, worst quality of life and walking impairment compared to their healthy counterparts. There was no significant difference in endothelial function between the two groups. The acute session of aerobic exercise lead to overall similar responses on cytokine kinetics in TA and HC groups. The exercise training program improved muscle strength and function, whereas aerobic capacity, quality of life, and endothelial function parameters remained generally unchanged. The exercise training program did not exacerbate inflammatory cytokines in TA patients; on the contrary, the pro-inflammatory cytokine TNF-alfa was diminished both at resting and following the acute session of aerobic exercise. In addition, the exercise training program increased the pro-angiogenic factors VEGF (at resting) and PDGF AA (at resting and in response to the acute session of aerobic exercise). Conclusions: Patients with TA has an impaired aerobic capacity, muscle strength and function compared to healthy subjects. An acute session of aerobic exercise does not exacerbate inflammation in these patients. Furthermore, exercise could be a well-tolerable, safe and efficient intervention able to induce immunomodulatory and pro-angiogenic effects as well as to increase muscle strength and function in TA patients
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