• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 177
  • 124
  • 13
  • 8
  • 7
  • 7
  • 3
  • 3
  • 2
  • 1
  • 1
  • 1
  • 1
  • 1
  • Tagged with
  • 369
  • 369
  • 352
  • 127
  • 119
  • 93
  • 41
  • 35
  • 33
  • 31
  • 31
  • 28
  • 25
  • 25
  • 24
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
131

Non-invasive cardiovascular assessment in patients with systemic lupus erythematosus. / CUHK electronic theses & dissertations collection

January 2008 (has links)
A cohort of 87 SLE female patients underwent non-invasive assessments (e.g., vascular ultrasound, pulse wave analysis with applanation tonometry and echocardiography with TDI). In addition, disease activity, organ damage and SLE-related lab markers were also evaluated. Forty female healthy subjects were included as normal control. / In summary, pulse wave analysis and tissue Doppler imaging are sensitive and accurate to detect premature atherosclerosis and subclinical myocardial dysfunction. The current study demonstrated a close correlation of inflammatory burden (disease activity and organ damage) to premature atherosclerosis and subclinical myocardial dysfunction, which may implicate the importance of routinely monitoring and early treatment to attenuate cardiovascular involvement. / Systemic lupus erythematosus (SLE), an autoimmune-inflammatory disease, results in multi-organ damage of the body. Compared to Caucasian, Chinese in Hong Kong have high prevalence of SLE. Cardiovascular diseases are common manifestations of SLE, which have emerged to be one of main causes of mortality. Detection of premature atherosclerosis, arterial stiffening and subclinical myocardial impairment early in the course of the disease is important as there may be a role of early therapeutic intervention in these patients that might translate into better clinical outcomes. In this regard, newer non-invasive methods, such as, pulse wave analysis and tissue Doppler imaging (TDI), have gained clinical popularity due to their accurate, reliable and reproducible measurements for the early detection of subclinical cardiovascular complications. / The main findings were as follows: (1) Increased arterial stiffness and premature atherosclerosis were demonstrated in SLE patients with mild disease and a low prevalence of end-organ damage and SLE itself was an independent risk factor of early atherosclerosis; (2) The abnormal vascular parameters correlated with disease activity; (3) SLE patients without overt cardiovascular involvement still have abnormal diastolic function with or without elevated LV filling pressure identified by a ratio of mitral Doppler inflow velocity to lateral annulus velocity (lateral E/E'>10) on pulse-wave and tissue Doppler echocardiography; (4) Both pulmonary artery hypertension and organ-damage were the independent predictors of elevated LV filling pressure alter adjustment of traditional risk factors, with the former adding incremental predictive value to the latter; (5) There was evidence of subclinical LV systolic dysfunction in patients with SLE even when LV ejection fraction appeared to be normal; (6) The independent determinants of subclinical LV systolic dysfunction included long disease duration of >10 years, active disease, reduced total arterial compliance as well as abnormal mid-wall fractional shortening, and the assessment of these factors provided incremental predictive value. / This thesis applied the above non-invasive methods to SLE subjects with the following aims: (1) To ascertain whether there is evidence of preclinical atherosclerosis (as indicated by carotid intima-media thickness), and/or increased arterial stiffeness (as reflected by direct and indirect surrogate parameters, including pulse wave velocity, augmentation index and ankle-brachial index) in SLE; (2) To investigate the relationships of these noninvasive vascular parameters to inflammatory disease burden in terms of SLE disease activity and organ damage; (3) To assess whether there is evidence of subclinical myocardial diastolic dysfunction; (4) To determine the associations between various clinical and echocardiographic parameters, including presence of pulmonary arterial hypertension, SLE-related clinical data, and elevated LV filling pressure; (5) To detect whether there is evidence of subclinical myocardial systolic dysfunction by tissue Doppler echocardiography; (6) To determine various clinical and echocardiographic parameters in predicting subclinical LV longitudinal-axis systolic function. / Shang, Qing. / Advisers: Yu Cheuk-man; Tam Lai-Shan; Yip Wai-Kwok. / Source: Dissertation Abstracts International, Volume: 70-06, Section: B, page: 3421. / Thesis (Ph.D.)--Chinese University of Hong Kong, 2008. / Includes bibliographical references (leaves 166-201). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Electronic reproduction. [Ann Arbor, MI] : ProQuest Information and Learning, [200-] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Abstracts in English and Chinese. / School code: 1307.
132

Immune regulation induced by apoptotic cells in health and in systemic lupus erythematosus (SLE)

Simpson, Joanne Elizabeth January 2016 (has links)
Systemic lupus erythematosus (SLE) is a chronic autoimmune disease where failure to remove apoptotic cells, due to a defect in phagocytic cells, or deficient opsonisation, leads to secondary necrosis and the release of DNA and chromatin. The nuclear constituents from apoptotic cells are targeted by autoantibodies, which form immune complexes. Immune complex-mediated TLR9 activation of plasmacytoid dendritic cells (pDCs) and subsequent secretion of interferon (IFN-α) is thought to drive inflammation in SLE. It is currently believed that pDCs do not normally respond to apoptotic cells, as self-DNA is hidden from TLR9. However, DNA and chromatin expressed on membrane bound apoptotic bodies is essential for inducing IL-10 secreting regulatory B cells through TLR9 stimulation. The overall objective of this thesis was to understand how apoptotic cells influence immune responses in health and in patients with SLE. Splenic mouse pDCs were activated with the synthetic TLR7 agonist R848 and TLR9 agonists CpGB and CpGA and were co-cultured with apoptotic cells, or with freeze-thawed necrotic cells. PDCs co-cultured with apoptotic cells down-regulated the expression of CD40 and CD86. When pDCs were activated by R848 or CpGB, IL-10, IFN-γ and IL-6 secretion was significantly induced in the presence of apoptotic cells. PDCs so cultured induced T cells to secrete immune-regulatory IL- 10. In contrast, co-culturing apoptotic cells with pDCs activated by CpGA, augmented IFN-α secretion. These cytokine responses by pDCs were only stimulated by DNA on whole apoptotic cells; not by free nucleic acids derived from necrotic cells. This data demonstrates that the inflammatory context in which pDCs sense whole apoptotic cells is crucial to determining the threshold of tolerance to apoptotic self. It questions the perception that pDCs see all apoptotic cells and their necrotic cellular debris as dangerous and suggests that there may be something intrinsically different about SLE apoptotic cells, which causes inflammation. SNPs near ATG5, a protein of the cell survival pathway autophagy, have been linked to SLE susceptibility, but the role of autophagy in SLE pathogenesis is unclear. We hypothesised that dysfunctional autophagy is linked to abnormal apoptosis of SLE lymphocytes. Western blotting revealed that ATG5-ATG12 protein complex expression was significantly reduced in SLE lymphocytes and they failed to convert LC3-I to LC3- II, the hallmark of a functioning autophagy pathway, which caused accelerated secondary necrosis. Apoptotic SLE lymphocytes had an impaired ability to stimulate IL-10 secreting regulatory B cells and they induced pro-inflammatory cytokine secretion by monocyte-derived macrophages. Phagocytosis of apoptotic SLE lymphocytes by healthy macrophages was also impaired; however this was independent of ATG5 protein expression. The novel findings of this thesis suggest SLE apoptotic lymphocytes are intrinsically pro-inflammatory, which may be caused by diminished autophagy leading to an inability of lymphocytes to correctly execute apoptosis. Furthermore, inefficient clearance of SLE apoptotic cells results from a defect in the apoptotic cell, rather than the phagocytic cell.
133

Segurança e eficácia da vacina contra hepatite B no lúpus eritematoso sistêmico / Safety and efficacy of hepatitis B vaccine in systemic lupus erythematosus

Kátia Akemi Miyazato Kuruma 08 April 2008 (has links)
A vacina contra hepatite B tem sido implicada como um desencadeador de doenças auto-imunes, mas ainda não existem estudos prospectivos no lúpus. Assim, avaliamos prospectivamente a segurança e eficácia da imunização com a vacina recombinante contra hepatite B (Euvax B® - LG) em pacientes com diagnóstico de lúpus. Foram selecionadas 28 pacientes com a doença inativa (SLEDAI<4), com idade entre 18 e 50 anos e sorologia negativa para o vírus da hepatite B (VHB). Os critérios de exclusão foram o uso de prednisona >=20 mg/dia e drogas imunossupressoras, anti-dsDNA e anticardiolipina negativos. Os dados clínicos e laboratoriais foram coletados na entrada do estudo e um mês após cada dose da vacina. Além disso, obtivemos dados do ano anterior usando o prontuário eletrônico padronizado. A média de idade foi de 34 ± 7,7 anos e a média da duração da doença foi de 10,4 ± 6,7 anos. Soroconversão adequada foi atingida no final do estudo (93%), embora tenhamos observado uma baixa freqüência após a primeira dose (4%) e após a segunda dose (54%). Nenhuma alteração significativa na média de SLEDAI foi detectada após cada dose durante o estudo (0,14 ± 0,52 vs. 0 vs. 0,61 ± 1,66 vs. 0,36 ± 1,34, p=0,11). Reforçando estes achados, os 11% de atividade de doença durante o período de vacinação foi semelhante aos 21% observados no ano anterior (p=0,46). Além disso, a média da dose de prednisona na entrada foi comparável à dose do final do estudo (2,86 ± 3,06 vs. 4,64 ± 8,25 mg/d, p=0,32). A freqüência do uso de terapia imunossupressora no período da vacinação (11%) foi semelhante aos 14% observados no ano anterior (p=0,66). A vacinação contra hepatite B apresentou uma resposta de anticorpos protetores adequada e foi segura nos pacientes com lúpus inativo. / Hepatitis B vaccination has been implicated as a potential trigger for autoimmune diseases but there are no prospective studies in lupus. We therefore assessed prospectively the safety and efficacy of immunization with recombinant DNA hepatitis B vaccine (Euvax B® - LG) in SLE patients. Twenty-eight consecutive inactive SLE patients (SLEDAI<4), age between 18-50 years and negative serology for hepatitis B virus (HBV) were selected. Exclusion criteria were prednisone > 20mg/day and immunosuppressive drugs. Clinical and laboratorial assessments were obtained at study entry and one month after the three doses. In addition, a previous one year evaluation was performed using a standard electronic protocol. The mean age was 34 ± 7.7 years and disease duration was 10.4 ± 6.7 years. An adequate seroconversion was achieved at the end of the study (93%), although a lower frequency after the first (4%) and second dose (54%) was observed. No significant change in mean SLEDAI score was detected after each dose throughout the study (0.14 ± 0.52 vs. 0 vs. 0.61 ± 1.66 vs. 0.36 ± 1.34, p=0.11). Reinforcing these findings, the 11% flares during vaccination was similar to the 21% observed in the previous year (p=0.46). Furthermore, the mean prednisone dose at study entry was comparable to the end of the study (2.86 ± 3.06 vs. 4.64 ± 8.25 mg/d, p=0.32). In addition, the frequency of immunosuppressive therapy during the vaccination period (11%) was alike to the 14% observed in the previous year before entry (p=0.66). Hepatitis B vaccination was safe in inactive SLE patients with an adequate vaccine response rate.
134

Lesão podocitária na nefrite lúpica membranosa pura e proliferativa: mecanismos distintos de proteinúria? / Podocyte injury in pure membranous and proliferative lupus nephritis: distinct underlying mechanisms of proteinuria?

Gabriela de Mendonça Rezende 11 February 2015 (has links)
Proteinúria é a principal manifestação da nefrite lúpica (NL) e reflete lesão no podócito. Análise dos biomarcadores do podócito foi realizada com o objetivo de identificar se o fenótipo podocitário é distinto na NL membranosa pura e proliferativa. Expressão de sinaptopodina, proteína 1 do tumor de Wilms (Wilms tumor protein 1 - WT1), proteína epitelial glomerular 1 (glomerular epitelial protein 1 - GLEPP1) e nefrina foi avaliada em 52 biópsias de NL por imunohistoquímica. Expressão preservada de sinaptopodina foi observada em apenas 10 (19,2%) de todas as biópsias enquanto que 42 (80,8%) apresentavam expressão reduzida. Ambos os grupos tinham proteinúria semelhante no momento da biópsia (p = 0,22), porém, no seguimento médio de quatro anos houve uma tendência para menores níveis médios de proteinúria nos pacientes com marcação preservada de sinaptopodina (0,26 ± 0,23 vs 0,84 ± 0,90 g/24 h, p = 0,05) do que naqueles com expressão reduzida. Trinta e nove (75%) biópsias foram classificadas como proliferativa e treze (25%) como membranosa pura. Comparação dos biomarcadores do podócito demonstrou predomíno de marcação preservada de sinaptopodina (69,2%), WT1 (69,2%), GLEPP1 (53,9%) e nefrina (60%) no grupo membranosa pura enquanto apenas < 10% das proliferativas apresentaram expressão preservada. Nossos dados sugerem que nas classes proliferativas parece haver lesão estrutural do podócito, enquanto que na membranosa pura o padrão predominantemente preservado sugere uma lesão funcional do podócito que pode ser responsável pelo melhor prognóstico a longo prazo do desfecho da proteinúria / Proteinuria is a major feature of lupus nephritis (LN) and reflects podocyte injury. Analysis of podocyte biomarkers was performed attempting to identify if podocyte phenotype is distinct in pure membranous and proliferative LN. Expression of synaptopodin, Wilms tumor protein 1 (WT1), glomerular epithelial protein 1 (GLEPP1) and nephrin was evaluated in 52 LN biopsies by immunohistochemistry. Preserved synaptopodin expression was observed in only 10 (19,2%) of all biopsies while 42 (80,8%) had a reduced expression. Both groups had comparable proteinuria at the time of biopsy (p=0,22), however, in the mean follow-up of four years there was a tendency to lower mean levels of proteinuria in patients with preserved synaptopodin staining (0,26 ± 0,23 vs. 0,84 ± 0,90 g/24 h, p=0,05) than those with diminished expression. Thirty-nine (75%) biopsies were classified as proliferative and thirteen (25%) as pure membranous. Comparison of podocyte biomarkers demonstrated a predominance of preserved staining of synaptopodin (69,2%), WT1 (69,2%), GLEPP1 (53,9%) and nephrin (60%) in the pure membranous group whereas only < 10% of the proliferative showed preserved expression. Our data suggest that in proliferative forms there seems to occur structural podocyte damage, whereas in the pure membranous the predominant preserved pattern suggests a dysfunctional podocyte lesion that may account for the better long-term prognosis of proteinuria outcome
135

Anticorpo antiproteína P ribossomal em pacientes com hepatite autoimune / Anti-ribosomal P protein antibody in autoimmune hepatitis patients

Ana Luisa Garcia Calich 03 May 2013 (has links)
Introdução: Os anticorpos antiproteína P ribossomal (anti-P) são considerados marcadores sorológicos específicos do Lúpus Eritematoso Sistêmico (LES) e estão associados a acometimento hepático nesta doença. As semelhanças entre a hepatite autoimune (HAI) e a hepatite associada ao LES levou ao questionamento se o anticorpo anti-P também estaria presente na HAI. Objetivo: Avaliar a frequência e significância clínica do anticorpo anti-P em uma grande coorte de pacientes com HAI. Métodos: Foram analisados os soros de 96 pacientes com HAI, coletados no diagnóstico e comparados com 82 soros de indivíduos saudáveis. Todos os soros foram testados para a presença do anticorpo anti-P pelo método de ELISA, do anticorpo anti-DNA de dupla fita pelo método de imunofluorescência indireta usando Crithidia luciliae e do anticorpo anti-Sm pelo método de ELISA. Os critérios de exclusão adotados foram a presença de outros anticorpos específicos de LES como o anti-DNA de dupla fita (n=1) e o anti-Sm (n=2) ou se o paciente apresentasse o diagnóstico de LES definido pelo Colégio Americano de Reumatologia (n=0). Os prontuários médicos foram revisados para dados demográficos, clínicos e resultados de exames laboratoriais relacionados a hepatopatia e anticorpos específicos de HAI. Resultado: Títulos moderados ou alto (> 40 U) de anti-P foram encontrados em 9,7% (9/93) dos pacientes com HAI e em nenhum dos controles (p = 0,003). No diagnóstico, os pacientes com anti-P positivo ou negativo apresentavam características demográficas/clínicas semelhantes, como a frequência de cirrose (44,4% vs 28,5%, p = 0,44) e exames laboratoriais relacionados a hepatite (p > 0,05). Entretanto, ao final do seguimento destes pacientes (média de 10,2 ± 4,9 anos), os pacientes positivos para anticorpos anti-P apresentaram uma maior frequência de cirrose quando comparados a pacientes negativos para anti-P (100% vs 60%, p = 0,04). Conclusão: a demonstração da presença do anticorpo anti-P em pacientes com HAI sem evidência de LES sugere um mecanismo comum de acometimento hepático nestas duas doenças. Além disso, a presença deste anticorpo parece predizer um pior prognóstico nos pacientes com HAI / Background: Autoantibodies to ribosomal P proteins (anti-rib P) are specific serological markers for systemic lupus erythematosus (SLE) and are associated with liver involvement in this disease. The similarity in autoimmune background between autoimmune hepatitis (AIH) and SLE- associated hepatitis raises the possibility that anti-rib P antibodies might also have relevance in AIH. Aims: To evaluate the frequency and clinical significance of anti-rib P antibodies in a large AIH cohort. Methods: Sera obtained at diagnosis of 96 AIH patients and of 82 healthy controls were tested for IgG anti-ribosomal P protein by ELISA. All of the sera were also screened for other lupus-specific autoantibodies, three patients with the presence of anti-dsDNA (n=1) and anti-Sm (n = 2) were excluded. Results: Moderate to high titers (> 40 U) of anti-rib P antibody were found in 9.7% (9/93) of the AIH patients and none of the controls (P = 0.003). At presentation, AIH patients with and without anti-rib P antibodies had similar demographic/clinical features, including the frequency of cirrhosis (44.4% vs. 28.5%, P = 0.44), hepatic laboratorial findings (p > 0.05). Importantly, at the final observation (follow-up period 10.2 ± 4.9 years), the AIH patients with anti-rib P had a significantly higher frequency of cirrhosis compared to the negative group (100% vs. 60%, P = 0.04). Conclusion: The novel demonstration of anti-rib P in AIH patients without clinical or laboratory evidence of SLE suggests a common underlying mechanism targeting the liver in these two diseases. In addition, this antibody appears to predict the patients with worse AIH prognoses
136

Segurança e eficácia da vacina contra hepatite B no lúpus eritematoso sistêmico / Safety and efficacy of hepatitis B vaccine in systemic lupus erythematosus

Kuruma, Kátia Akemi Miyazato 08 April 2008 (has links)
A vacina contra hepatite B tem sido implicada como um desencadeador de doenças auto-imunes, mas ainda não existem estudos prospectivos no lúpus. Assim, avaliamos prospectivamente a segurança e eficácia da imunização com a vacina recombinante contra hepatite B (Euvax B® - LG) em pacientes com diagnóstico de lúpus. Foram selecionadas 28 pacientes com a doença inativa (SLEDAI<4), com idade entre 18 e 50 anos e sorologia negativa para o vírus da hepatite B (VHB). Os critérios de exclusão foram o uso de prednisona >=20 mg/dia e drogas imunossupressoras, anti-dsDNA e anticardiolipina negativos. Os dados clínicos e laboratoriais foram coletados na entrada do estudo e um mês após cada dose da vacina. Além disso, obtivemos dados do ano anterior usando o prontuário eletrônico padronizado. A média de idade foi de 34 ± 7,7 anos e a média da duração da doença foi de 10,4 ± 6,7 anos. Soroconversão adequada foi atingida no final do estudo (93%), embora tenhamos observado uma baixa freqüência após a primeira dose (4%) e após a segunda dose (54%). Nenhuma alteração significativa na média de SLEDAI foi detectada após cada dose durante o estudo (0,14 ± 0,52 vs. 0 vs. 0,61 ± 1,66 vs. 0,36 ± 1,34, p=0,11). Reforçando estes achados, os 11% de atividade de doença durante o período de vacinação foi semelhante aos 21% observados no ano anterior (p=0,46). Além disso, a média da dose de prednisona na entrada foi comparável à dose do final do estudo (2,86 ± 3,06 vs. 4,64 ± 8,25 mg/d, p=0,32). A freqüência do uso de terapia imunossupressora no período da vacinação (11%) foi semelhante aos 14% observados no ano anterior (p=0,66). A vacinação contra hepatite B apresentou uma resposta de anticorpos protetores adequada e foi segura nos pacientes com lúpus inativo. / Hepatitis B vaccination has been implicated as a potential trigger for autoimmune diseases but there are no prospective studies in lupus. We therefore assessed prospectively the safety and efficacy of immunization with recombinant DNA hepatitis B vaccine (Euvax B® - LG) in SLE patients. Twenty-eight consecutive inactive SLE patients (SLEDAI<4), age between 18-50 years and negative serology for hepatitis B virus (HBV) were selected. Exclusion criteria were prednisone > 20mg/day and immunosuppressive drugs. Clinical and laboratorial assessments were obtained at study entry and one month after the three doses. In addition, a previous one year evaluation was performed using a standard electronic protocol. The mean age was 34 ± 7.7 years and disease duration was 10.4 ± 6.7 years. An adequate seroconversion was achieved at the end of the study (93%), although a lower frequency after the first (4%) and second dose (54%) was observed. No significant change in mean SLEDAI score was detected after each dose throughout the study (0.14 ± 0.52 vs. 0 vs. 0.61 ± 1.66 vs. 0.36 ± 1.34, p=0.11). Reinforcing these findings, the 11% flares during vaccination was similar to the 21% observed in the previous year (p=0.46). Furthermore, the mean prednisone dose at study entry was comparable to the end of the study (2.86 ± 3.06 vs. 4.64 ± 8.25 mg/d, p=0.32). In addition, the frequency of immunosuppressive therapy during the vaccination period (11%) was alike to the 14% observed in the previous year before entry (p=0.66). Hepatitis B vaccination was safe in inactive SLE patients with an adequate vaccine response rate.
137

Influence of Epstein-Barr Virus on Systemic Lupus Erythematosus Disease Development and the Role of Depression on Disease Progression

Cornaby, Caleb 01 December 2017 (has links)
Systemic Lupus Erythematosus (SLE) is an autoimmune disease affecting 20 to 250 individuals per 100,000 worldwide. Symptomology includes dermatological manifestations such as discoid lesions, acute cutaneous rashes, and oral and nasal ulcers, along with musculoskeletal, pulmonary, and renal complications. Abnormal T and B lymphocyte function and apoptosis, immune complex clearance, complement function, and nucleosome processing are typical of disease pathophysiology. SLE is the result of both environmental and genetic factors, which together create the conditions leading to disease onset and progression. Of these environmental factors, Epstein-Barr virus (EBV) infection is known to cause the genesis of cross-reactive antibodies in SLE prone individuals that can initiate disease activity. Viral infection and modulation of cellular genes is important in understanding the microenvironment that could lead to immune mis-regulation and the inception of lupus in those individuals at risk. During disease development, a variety of variables assist and detract from disease progression and the quality of life experienced by SLE patients. Research into EBV-infected naïve B lymphocytes revealed that EBV modulates the chemotactic receptor EBI2 during viral infection via the BRRF1 viral gene product Na. This likely changes B lymphocyte chemotaxis in secondary tissue in virally infected B cells. Current literature suggests this results in sequestration of cells to peripheral areas of the tissue and mis-regulation of the immune response. It is not uncommon for SLE patients to have neuropsychiatric disorders due to lupus disease activity. With SLE patients being up to 6 times more at risk for depression, recognition and treatment of depression and anxiety have been shown to improve quality of life, pain, and treatment outcomes. Two studies investigate both clinical laboratory and psychosocial assessment variables that we suspect to be correlated with depression in patients with SLE. Univariate and multivariate analysis from our first study identified an array of variables that show strong associations with depression, including: Body Mass Index, Pain, Total Complement, fatigue assessments, and SF-36 scores. The second study found similar associations, but further found that serum IL-10 levels demonstrated a strong correlation with depression in SLE patients. In this final study SLE patients are compared alongside healthy, clinically depressed, and rheumatoid arthritis patients to provide evidence that increased depression in SLE patients is due more to disease pathology than a result of chronic inflammation.
138

The Association of Cancer Development in Patients with Systemic Lupus Erythematosus

Coley, Rose Michelle 01 January 2016 (has links)
The Association of Cancer Development in Patients with Systemic Lupus Erythematosus by Rose Michelle Coley MPH, Walden University, 2011 BS, University of Mount Olive, 2008 Dissertation Submitted in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy Public Health Walden University March 2016 Both cancer and autoimmune diseases have been associated with numerous factors that may independently lead to the development of either disease. When these factors overlap the difficulty in assessing association is compounded. The numerous factors that are thought to cause systemic lupus erythematosus (SLE), which leads to the development of cancer, makes the study of an association between the 2 diseases challenging. The purpose of this study was to examine whether the risk of cancer development increased in SLE patients compared to the risk in non-SLE patients. Researchers have not shown consistent relationships of cancer development in patients with SLE; however, consideration of the various factors that contribute to the diseases is necessary to measure an association between the 2 diseases. This study used the Clinical Practice Research database (CPRD), a large, population-based database to test the relationship between SLE and cancer. A matched retrospective cohort study among SLE (n=3025) and non-SLE (n=180555) patients was conducted using the propensity score methodology to help balance the differences between the comparison groups. The propensity score methodology created a similar distribution of observed baseline covariates between the 2 groups. With adjustment for age, the predictor variable of SLE indicates that a patient with SLE is still 2.7 times more likely to develop cancer than is a non-SLE patient. The study outcomes could promote positive social change by reinforcing current recommendations for cancer screenings in persons with SLE, which could enhance the ability to detect cancer early enough to decrease mortality because of cancer in persons with SLE.
139

Kvinnor med Systemisk lupus erythematosus : en kartläggning av deras önskemål om kunskap i egenvård

Karlsson, Susanne January 2010 (has links)
<p>Systemisk lupus erythematosus, (SLE) ingår i gruppen reumatiska sjukdomar och är en av ca 80 diagnoser inom området reumatologi. SLE är en kronisk , inflammatorisk, autoimmun sjukdom som orsakar inflammation i olika delar av kroppens organ. SLE förekommer i båda könen och alla åldrar,men sjukdomen är sju gånger vanligare bland kvinnor än hos män. Det oförutsägbara förloppet av denna kroniska sjukdom, dess symtom och eventuellt bieffekter av behandling kan betydande påverka patientens fysiska och psykiska välbefinnande.</p><p>Tidigare studier har visade att patienter med diagnosen SLE hade ett behov av och efterfrågade kunskap om egenvård för att kunna nå en bättre livskvalitet. Förhoppningen var att om egenvård kommer i fokus i patientutbildningar för denna patientgrupp kan deras livskvalitet höjas.</p><p>Föreliggande studie kartlägger vilken kunskap kvinnliga patienter i Uppsala län med SLE uppfattar att de hade om egenvård, samt hur mycket kunskap de uppfattade att de önskade inom egenvårdsområden. Studien omfattade följande områden; smärta, fysisk träning, kronisk trötthet och stress. Vidare berörde studien viket intresse det fanns att deltaga i patientutbildning som berör SLE och egenvård. Studien begränsade sig till kvinnliga patienter av den anledningen att det är flest kvinnor med den diagnosen.</p><p>Det var 39 kvinnliga deltagare i denna studie. Deltagarna fick vis postenkäter besvara 12 frågor. Frågeformuläret var specifikt utformat för denna studie. Deltagarna ombads skatta i vilken grad de uppfattade att de hade kunskap och önskade kunskap inom olika egenvårdsområden.</p><p>Resultatet av denna studie visade att patienter med SLE önskar mer kunskap än vad de redan har om områden som berör egenvård. Över hälften som deltog var intresserade av att vara med i patientutbildning.</p>
140

Genetic studies on Systemic Lupus Erythematosus : A fine mapping and candidate gene approach

Magnusson, Veronica January 2002 (has links)
<p>Linkage in the 2q37 region was evaluated using microsatellite markers in multi-case families from Sweden, Iceland and Norway. Both the two-point and the multipoint linkage analysis show highly significant LOD scores (Z=4.51 and 6.03, respectively). Linkage disequilibrium mapping indicates that some association exists in this region. The <i>PDCD1</i> gene was suggested as a candidate gene within the 2q37 locus due to its importance in immune regulation. Indeed, one haplotype, described by the presence of allele A of the PD1.3 SNP located within intron 4 of this gene, shows linkage to SLE in the Nordic families. The PD1.3A allele is also found to be strongly associated in familiar and sporadic cases of SLE in Europeans and Mexicans. Functional studies further support PD1.3A to be a susceptibility allele for SLE.</p><p>The 1q23 region, containing the genes for the low affinity Fcγ receptors, was fine mapped using single- and multi- case families of various origins. Genetic variants of those genes were analysed and association is found to both the risk alleles of <i>Fc</i>γ<i>RIIA</i> and <i>Fc</i>γ<i>RIIIA</i> in all families. In these families, a single haplotype carrying both risk alleles is predominantly transmitted to patients with SLE, suggesting a presence of linkage disequilibrium between those two genes. <i>Fc</i>γ<i>RIIA</i> and <i>Fc</i>γ<i>RIIIA</i> are also found to be associated to SLE and lupus nephritis in a case-control cohort from Sweden. In the same cohort, the PD1.3A allele shows strong association to lupus nephritis. We suggest that there may be an additive effect between <i>Fc</i>γ<i>RIIA</i> and <i>PDCD1</i>, since having the disease-associated genotypes at both loci gives an increased risk for developing lupus nephritis.</p><p>Systemic Lupus Erythematosus (SLE) is a systemic autoimmune disorder with a complex multifactorial aetiology. Genetic studies suggest that several genes are involved in disease pathogenesis and that extended genetic heterogeneity is present.</p>

Page generated in 0.0684 seconds