• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 20
  • 19
  • 3
  • 2
  • 2
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • Tagged with
  • 51
  • 51
  • 21
  • 19
  • 17
  • 15
  • 12
  • 10
  • 8
  • 5
  • 5
  • 4
  • 4
  • 4
  • 4
  • 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.
41

Manifestações orais da doença inflamatória intestinal: estudo clínico-patológico retrospectivo / Oral manifestations of inflammatory bowel disease: retrospective clinical-pathologic study

Pincelli, Thaís Prota Hussein 12 May 2010 (has links)
O termo doença inflamatória intestinal engloba duas doenças inflamatórias crônicas, imunologicamente mediadas, envolvendo o trato gastrointestinal: a doença de Crohn e a retocolite ulcerativa. Os sintomas intestinais são predominantes, porém, durante o curso da doença, podem ocorrer manifestações extraintestinais, incluindo o envolvimento da cavidade oral. O envolvimento oral na doença inflamatória intestinal pode se dar por diferentes tipos de lesões, sendo o tipo mais comum a afta. Lesões menos frequentes incluem, entre outras, a pioestomatite vegetante e as lesões granulomatosas da doença de Crohn. Apresentamos dez casos de doentes com manifestações orais de doença inflamatória intestinal, sendo que, em alguns desses casos, essas foram essenciais para o diagnóstico definitivo da doença, além de revisão detalhada da literatura. O envolvimento da cavidade oral pode ser prévio ou simultâneo aos sintomas gastrointestinais. Porém, na maior parte dos casos, a doença inflamatória intestinal precede o início das lesões orais em meses ou anos. Em muitos doentes, a sintomatologia intestinal pode ser mínima ou mesmo ausente, o que justifica exame minucioso do trato gastrointestinal em todos os doentes com lesões orais suspeitas, mesmo na ausência de sintomas evidentes. Geralmente, o curso clínico das lesões orais é paralelo à atividade da doença inflamatória intestinal, por isso as manifestações orais são consideradas bons marcadores cutâneos da doença / Inflammatory bowel disease comprises two chronic, tissue-destructive, clinical entities: Crohns disease and ulcerative colitis, both immunologically based. Bowel symptoms are predominant, but extra-intestinal complications may occur, including involvement of the oral cavity. Oral involvement during Inflammatory bowel disease includes several types of lesions: the most common are aphthae; uncommon lesions include, among others, pyostomatitis vegetans and granulomatous lesions of Crohns disease. Starting with a presentation of ten patients with oral manifestations, which were crucial for the final diagnosis of inflammatory bowel disease, a review on the subject is presented. Oral involvement in inflammatory bowel disease may be previous or simultaneous to the gastrointestinal symptoms. However, in the majority of cases, bowel disease precedes the onset of oral lesions by months or years. In many patients, the intestinal symptoms may be minimal and can go undetected; thus, most authors believe that the bowel must be thoroughly examined in all patients with suspected inflammatory bowel disease even in the absence of specific symptoms. Usually, the clinical course of oral lesions is parallel to the activity of inflammatory bowel disease; therefore, oral manifestations are a good cutaneous marker of inflammatory bowel disease
42

Tratamento cirúrgico da doença de Crohn:estudo comparativo entre desfechos precoses após laparoscopia primária, laparoscopia repetida ou laparoscopia após laparotomia na recidiva / Surgical treatment of Crohn\'s Disease: a comparative study between short-term outcomes after primary laparoscopy, repeated laparoscopy or laparoscopy after laparotomy for recurrent disease

Araújo, Marleny Novaes Figueiredo de 17 February 2017 (has links)
Introdução: o uso da videolaparoscopia na doença de Crohn (DC) teve seu início nos anos 90, com ressalvas à possível dificuldade técnica que a DC complexa ou recorrente poderia impor à sua realização. Diversos estudos ao longo das décadas de 90 e 2000 mostraram ser a mesma factível, quando comparada à laparoscopia para DC primária, além de demonstrarem maior benefício da laparoscopia comparada à cirurgia aberta/convencional nos casos de DC recorrente. Entretanto, não houve estudos sobre resultados cirúrgicos após repetidas ressecções laparoscópicas. Objetivo: avaliar resultados pós-operatórios em curto prazo no tratamento da DC, comparando pacientes submetidos a uma segunda ressecção intestinal laparoscópica e pacientes sem cirurgia prévia. Além disso, comparar os mesmos resultados pós-operatórios entre pacientes submetidos a uma segunda ressecção intestinal laparoscópica e pacientes sendo submetidos a laparoscopia para DC e história prévia de ressecção intestinal prévia por laparotomia. Materiais e métodos: foi realizado análise retrospectiva a partir de base de dados mantida prospectivamente de pacientes submetidos a laparoscopia para tratamento da DC no Hospital Beaujon, França, entre 2005 e 2010. Os desfechos analisados foram: conversão para cirurgia aberta, tempo operatório, taxa de enterotomias inadvertidas no intra-operatório, morbidade, necessidade de reintervenção (cirúrgica ou radiológica) e tempo total de hospitalização. Resultados: foram analisados 18 pacientes com laparoscopia prévia (grupo A), 90 pacientes sem cirurgia prévia (grupo B) e 26 pacientes com laparotomia prévia (grupo C). Em nossa análise principal, comparando os grupos A e B, vemos grupos semelhantes em relação a dados demográficos, exceto maior número de casos complexos no grupo A (83,3 vs 46,7%; p=0,005) e tipo de operação realizada (p < 0,001). Quanto aos resultados, apenas o tempo operatório foi significativamente mais longo no grupo A (180 minutos vs. 150 minutos; p=0,013). A taxa de conversão, enterotomia inadvertida, morbidade, necessidade de reintervenção e tempo de hospitalização foram similares entre os grupos. Em nossa segunda análise, entre os grupos A e C, não houve diferença significativa quanto aos mesmos resultados analisados. Conclusão: apesar de um maior tempo operatório, uma segunda ressecção laparoscópica mantém os mesmos benefícios vistos em uma ressecção intestinal laparoscópica primária. Os mesmos benefícios são vistos quando os resultados são comparados com pacientes submetidos previamente a uma ressecção intestinal por laparotomia, em especial quando nas mãos de equipe experiente / Introduction: the use of laparoscopy in Crohn\'s disease (CD) had its beginning in the 90s, despite the possible challenge of technical difficulty that the complex or recurrent CD could impose to its realization. Numerous studies over the decades of 90 and 2000 showed laparoscopy in recurrent CD to be feasible compared to laparoscopy for primary CD, and have also shown the benefits of laparoscopic compared to open conventional surgery in patients with recurrent CD. However, there were no studies on surgical outcomes after repeated laparoscopic resections. Objective: 1. to evaluate postoperative short-term results regarding surgical treatment of CD, comparing patients who underwent a second laparoscopic bowel resection and patients without prior surgery. 2. to compare the same postoperative results among patients who underwent a second laparoscopic bowel resection patients and patients undergoing laparoscopic resection with history of prior intestinal resection by laparotomy. Materials and methods: a retrospective analysis from prospectively maintained database of patients undergoing laparoscopy for treatment of CD in Hospital Beaujon, France, between 2005 and 2010, was performed. The outcomes analyzed were: conversion to open surgery, operative time, intraoperative inadvertent enterotomy, morbidity, need for re-intervention (surgical or radiological) and length of hospitalization. Results: 18 patients with previous laparoscopy (group A), 90 patients without previous surgery (group B) and 26 patients with previous laparotomy (group C) were included. In our main analysis, comparing the groups A and B, groups were similar in respect to demographic data, except number of complex cases in group A (83.3 vs 46.7%; p = 0.005) and type of surgery performed (p < 0.001). As for the results, operative time was significantly longer in group A (180 minutes vs. 150 minutes; p = 0.013). Conversion rate, inadvertent enterotomy, morbidity, need for re-intervention and hospital stay were similar between groups. In our second analysis, between groups A and C, there was no significant difference between groups regarding the same variables. Conclusion. In spite of a longer operative time, a second laparoscopic resection guarantees the same benefits seen in a primary laparoscopic bowel resection. The same benefits are kept compared to patients who underwent prior bowel resection by laparotomy, especially when in the hands of experienced staff
43

Manifestações orais da doença inflamatória intestinal: estudo clínico-patológico retrospectivo / Oral manifestations of inflammatory bowel disease: retrospective clinical-pathologic study

Thaís Prota Hussein Pincelli 12 May 2010 (has links)
O termo doença inflamatória intestinal engloba duas doenças inflamatórias crônicas, imunologicamente mediadas, envolvendo o trato gastrointestinal: a doença de Crohn e a retocolite ulcerativa. Os sintomas intestinais são predominantes, porém, durante o curso da doença, podem ocorrer manifestações extraintestinais, incluindo o envolvimento da cavidade oral. O envolvimento oral na doença inflamatória intestinal pode se dar por diferentes tipos de lesões, sendo o tipo mais comum a afta. Lesões menos frequentes incluem, entre outras, a pioestomatite vegetante e as lesões granulomatosas da doença de Crohn. Apresentamos dez casos de doentes com manifestações orais de doença inflamatória intestinal, sendo que, em alguns desses casos, essas foram essenciais para o diagnóstico definitivo da doença, além de revisão detalhada da literatura. O envolvimento da cavidade oral pode ser prévio ou simultâneo aos sintomas gastrointestinais. Porém, na maior parte dos casos, a doença inflamatória intestinal precede o início das lesões orais em meses ou anos. Em muitos doentes, a sintomatologia intestinal pode ser mínima ou mesmo ausente, o que justifica exame minucioso do trato gastrointestinal em todos os doentes com lesões orais suspeitas, mesmo na ausência de sintomas evidentes. Geralmente, o curso clínico das lesões orais é paralelo à atividade da doença inflamatória intestinal, por isso as manifestações orais são consideradas bons marcadores cutâneos da doença / Inflammatory bowel disease comprises two chronic, tissue-destructive, clinical entities: Crohns disease and ulcerative colitis, both immunologically based. Bowel symptoms are predominant, but extra-intestinal complications may occur, including involvement of the oral cavity. Oral involvement during Inflammatory bowel disease includes several types of lesions: the most common are aphthae; uncommon lesions include, among others, pyostomatitis vegetans and granulomatous lesions of Crohns disease. Starting with a presentation of ten patients with oral manifestations, which were crucial for the final diagnosis of inflammatory bowel disease, a review on the subject is presented. Oral involvement in inflammatory bowel disease may be previous or simultaneous to the gastrointestinal symptoms. However, in the majority of cases, bowel disease precedes the onset of oral lesions by months or years. In many patients, the intestinal symptoms may be minimal and can go undetected; thus, most authors believe that the bowel must be thoroughly examined in all patients with suspected inflammatory bowel disease even in the absence of specific symptoms. Usually, the clinical course of oral lesions is parallel to the activity of inflammatory bowel disease; therefore, oral manifestations are a good cutaneous marker of inflammatory bowel disease
44

O telecuidado no tratamento das doenças inflamatórias intestinais: ensaio clínico randomizado

Santos, Rachael Miranda dos January 2016 (has links)
Submitted by Fabiana Gonçalves Pinto (benf@ndc.uff.br) on 2018-03-05T18:58:44Z No. of bitstreams: 1 Rachael Miranda dos Santos.pdf: 5659646 bytes, checksum: e846222a2924541f727ebc4447340212 (MD5) / Made available in DSpace on 2018-03-05T18:58:44Z (GMT). No. of bitstreams: 1 Rachael Miranda dos Santos.pdf: 5659646 bytes, checksum: e846222a2924541f727ebc4447340212 (MD5) Previous issue date: 2017 / Mestrado Profissional em Enfermagem Assistencial / As doenças inflamatórias intestinais (DII), apresentam uma crescente incidência mundial, são crônicas, progressivas, podendo se tornar graves. Esse estudo objetivou: Avaliar a efetividade do telecuidado dos pacientes portadores de Doenças Inflamatórias Intestinais, comparado ao tratamento ambulatorial convencional; Realizar telecuidado a um grupo de pacientes a partir do Índice Simples de Harvey-Bradshaw para Doença de Crohn (DC), e do Índice Clínico Simples de Atividade da Colite para Retocolite ulcerativa (RCU), acompanhando a flutuação de score, assim como; Avaliar a incidência de complicações relacionadas a DII, no grupo telecuidado pelo enfermeiro e no grupo controle dos pacientes atendidos no Ambulatório de Doenças Inflamatórias Intestinais da Policlínica Piquet Carneiro. Método: Ensaio clínico controlado e randomizado com tempo de seguimento de 24 semanas. A amostra foi de 176 voluntários. A coleta de dados ocorreu de abril a outubro de 2016. O desfecho primário do estudo foi a redução do índice de atividades da DII dos pacientes telecuidados e os desfechos secundários foram a redução de complicações relacionadas a doença. A pesquisa foi submetida, aprovada e registrada no Comitê de Ética em Pesquisa do Hospital Universitário Pedro Ernesto parecer 1.598990, e pelo Registro Brasileiro de Ensaios Clínicos com registro RBR-7t8fv7. Resultados: Os grupos foram homogêneos quanto às características sociodemográficas e clínicas. A população é tipicamente de mulheres (61,4%), brancas (47,26%), com idade média 44,7 anos. Quanto ao diagnóstico (54,5%) DC e (45,5%) RCU. As principais comorbidades foram hipertensão arterial sistêmica (36,4%) e diabetes mellitus (10,3%). E quanto à evolução ao longo de 24 semanas de tratamento, o grupo telecuidado apresentou maiores taxas de remissão da doença (97,7%), e menor escore de atividade da doença (1,7). Assim como maior adesão as condutas orientadas pela equipe multiprofissional do que o grupo controle. Os experimentados com baixo peso, tiveram sua classificação aproximada a faixa de normalidade. Conclusão: o telecuidado apresentou maior efetividade que o tratamento convencional no controle de atividade das DII / The inflammatory bowel diseases (IBD), a growing global impact, are progressive, chronic and may become severe. This study aimed to: Assess the effectiveness of the telenursing of patients with inflammatory bowel diseases, compared to the conventional outpatient treatment; Perform telenursing to a group of patients from the Simple Index of Harvey-Bradshaw to Crohn's disease (ad), and Simple Clinical index of activity of colitis for ulcerative rectocolitis (RCU), following the score, as well as fluctuation; To evaluate the incidence of complications related to IBD in the telecuidado group by the nurse and in the control group of patients seen in inflammatory bowel disease clinic of Piquet Carneiro Polyclinic. Method: randomized controlled trial with follow-up time of 24 weeks. The sample was of 176 volunteers. Data collection occurred from April to October 2016. The primary outcome of the study was the reduction in the index of activities of the IBD of telecare patients and the secondary outcomes were the reduction of complications related to the disease. The research was submitted, approved and registered in the Committee of Ethics in Research of the Hospital Universitário Pedro Ernesto opinion 1.598990, and by the Brazilian Registry of Clinical Trials with registry RBR-7t8fv7. Results: The groups were homogeneous regarding sociodemographic and clinical characteristics. The population is typically female (61.4%), white (47.26%), with a mean age of 44.7 years. Regarding the diagnosis (54.5%), DC and (45.5%) RCU. The main comorbidities were systemic arterial hypertension (36.4%) and diabetes mellitus (10.3%). Regarding the evolution over 24 weeks of treatment, the telecution group presented higher rates of disease remission (97.7%), and lower disease activity score (1.7). As well as greater adhesion the conducts guided by the multiprofessional team than the control group. Those with low weight, had their classification close to the normal range. Conclusion: telenursing was more effective than conventional treatment in the control of IBD activity
45

Tratamento cirúrgico da doença de Crohn:estudo comparativo entre desfechos precoses após laparoscopia primária, laparoscopia repetida ou laparoscopia após laparotomia na recidiva / Surgical treatment of Crohn\'s Disease: a comparative study between short-term outcomes after primary laparoscopy, repeated laparoscopy or laparoscopy after laparotomy for recurrent disease

Marleny Novaes Figueiredo de Araújo 17 February 2017 (has links)
Introdução: o uso da videolaparoscopia na doença de Crohn (DC) teve seu início nos anos 90, com ressalvas à possível dificuldade técnica que a DC complexa ou recorrente poderia impor à sua realização. Diversos estudos ao longo das décadas de 90 e 2000 mostraram ser a mesma factível, quando comparada à laparoscopia para DC primária, além de demonstrarem maior benefício da laparoscopia comparada à cirurgia aberta/convencional nos casos de DC recorrente. Entretanto, não houve estudos sobre resultados cirúrgicos após repetidas ressecções laparoscópicas. Objetivo: avaliar resultados pós-operatórios em curto prazo no tratamento da DC, comparando pacientes submetidos a uma segunda ressecção intestinal laparoscópica e pacientes sem cirurgia prévia. Além disso, comparar os mesmos resultados pós-operatórios entre pacientes submetidos a uma segunda ressecção intestinal laparoscópica e pacientes sendo submetidos a laparoscopia para DC e história prévia de ressecção intestinal prévia por laparotomia. Materiais e métodos: foi realizado análise retrospectiva a partir de base de dados mantida prospectivamente de pacientes submetidos a laparoscopia para tratamento da DC no Hospital Beaujon, França, entre 2005 e 2010. Os desfechos analisados foram: conversão para cirurgia aberta, tempo operatório, taxa de enterotomias inadvertidas no intra-operatório, morbidade, necessidade de reintervenção (cirúrgica ou radiológica) e tempo total de hospitalização. Resultados: foram analisados 18 pacientes com laparoscopia prévia (grupo A), 90 pacientes sem cirurgia prévia (grupo B) e 26 pacientes com laparotomia prévia (grupo C). Em nossa análise principal, comparando os grupos A e B, vemos grupos semelhantes em relação a dados demográficos, exceto maior número de casos complexos no grupo A (83,3 vs 46,7%; p=0,005) e tipo de operação realizada (p < 0,001). Quanto aos resultados, apenas o tempo operatório foi significativamente mais longo no grupo A (180 minutos vs. 150 minutos; p=0,013). A taxa de conversão, enterotomia inadvertida, morbidade, necessidade de reintervenção e tempo de hospitalização foram similares entre os grupos. Em nossa segunda análise, entre os grupos A e C, não houve diferença significativa quanto aos mesmos resultados analisados. Conclusão: apesar de um maior tempo operatório, uma segunda ressecção laparoscópica mantém os mesmos benefícios vistos em uma ressecção intestinal laparoscópica primária. Os mesmos benefícios são vistos quando os resultados são comparados com pacientes submetidos previamente a uma ressecção intestinal por laparotomia, em especial quando nas mãos de equipe experiente / Introduction: the use of laparoscopy in Crohn\'s disease (CD) had its beginning in the 90s, despite the possible challenge of technical difficulty that the complex or recurrent CD could impose to its realization. Numerous studies over the decades of 90 and 2000 showed laparoscopy in recurrent CD to be feasible compared to laparoscopy for primary CD, and have also shown the benefits of laparoscopic compared to open conventional surgery in patients with recurrent CD. However, there were no studies on surgical outcomes after repeated laparoscopic resections. Objective: 1. to evaluate postoperative short-term results regarding surgical treatment of CD, comparing patients who underwent a second laparoscopic bowel resection and patients without prior surgery. 2. to compare the same postoperative results among patients who underwent a second laparoscopic bowel resection patients and patients undergoing laparoscopic resection with history of prior intestinal resection by laparotomy. Materials and methods: a retrospective analysis from prospectively maintained database of patients undergoing laparoscopy for treatment of CD in Hospital Beaujon, France, between 2005 and 2010, was performed. The outcomes analyzed were: conversion to open surgery, operative time, intraoperative inadvertent enterotomy, morbidity, need for re-intervention (surgical or radiological) and length of hospitalization. Results: 18 patients with previous laparoscopy (group A), 90 patients without previous surgery (group B) and 26 patients with previous laparotomy (group C) were included. In our main analysis, comparing the groups A and B, groups were similar in respect to demographic data, except number of complex cases in group A (83.3 vs 46.7%; p = 0.005) and type of surgery performed (p < 0.001). As for the results, operative time was significantly longer in group A (180 minutes vs. 150 minutes; p = 0.013). Conversion rate, inadvertent enterotomy, morbidity, need for re-intervention and hospital stay were similar between groups. In our second analysis, between groups A and C, there was no significant difference between groups regarding the same variables. Conclusion. In spite of a longer operative time, a second laparoscopic resection guarantees the same benefits seen in a primary laparoscopic bowel resection. The same benefits are kept compared to patients who underwent prior bowel resection by laparotomy, especially when in the hands of experienced staff
46

Fatores preditivos de resposta a azatioprina em pacientes com doença de Crohn suboclusiva

Zanini, Karine Andrade Oliveira 04 March 2016 (has links)
Submitted by Renata Lopes (renatasil82@gmail.com) on 2016-04-28T15:21:16Z No. of bitstreams: 1 karineandradeoliveirazanini.pdf: 564422 bytes, checksum: 95992f692adb8715af66d371f3987b2f (MD5) / Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2016-05-02T01:12:26Z (GMT) No. of bitstreams: 1 karineandradeoliveirazanini.pdf: 564422 bytes, checksum: 95992f692adb8715af66d371f3987b2f (MD5) / Made available in DSpace on 2016-05-02T01:12:26Z (GMT). No. of bitstreams: 1 karineandradeoliveirazanini.pdf: 564422 bytes, checksum: 95992f692adb8715af66d371f3987b2f (MD5) Previous issue date: 2016-03-04 / Introdução: Apesar dos avanços recentes no tratamento de pacientes com doença de Crohn (DC), os sintomas oclusivos e suboclusivos observados na presença de estenoses clinicamente significativas permanecem um problema clínico desafiador. Na DC, a identificação de fatores que se associam à redução do risco de cirurgia é importante. Materiais e Métodos: Neste estudo retrospectivo, avaliamos os possíveis fatores preditivos, incluindo os marcadores inflamatórios associados à redução da necessidade de intervenção cirúrgica em pacientes com DC que apresentaram o primeiro episódio de suboclusão intestinal clinicamente resolvido e tratados, subsequentemente, com azatioprina (AZA) durante três anos. Resultados: Trinta e seis pacientes com DC suboclusiva foram incluídos, dos quais, 24 não necessitaram de ressecção intestinal. Nenhum dado demográfico ou clínico associou-se com a resposta à AZA. Apenas a proteína C reativa (PCR) apresentou correlação com a eficácia da AZA. Para cada aumento de 1 mg na PCR, houve uma redução do risco de cirurgia em 8% (RR 0,92; IC 0,86-0,98; p=0,008). O grupo PCR>6 (elevada) apresentou 81% de redução de risco de cirurgia em relação ao grupo PCR<6 (OR 0,19 IC 0,05-0,64; p=0,008). Conclusões: Os pacientes que apresentaram PCR elevada tiveram uma menor taxa de cirurgia a médio e longo prazos durante a terapia com AZA. A PCR pode identificar pacientes com estenoses predominantemente inflamatórias e responsivas ao tratamento clínico. / Background: Despite recent advances in the treatment of patients with Crohn's disease (CD), occlusive and subocclusive symptoms observed in the presence of clinically significant stenosis remains a challenging clinical problem. In inflammatory bowel diseases (IBD), the identification of factors associated with reduced risk of surgery in this context is important. Materials and methods: In this retrospective study, we evaluated the possible predictive factors, including inflammatory markers associated with reduced need for surgical intervention in patients with CD who presented the first episode of clinically solved subocclusion and treated subsequently with azathioprine (AZA) for three years. Results: Thirty-six patients with subocclusive CD were included, of these, 24 has not required bowel resection. No demographic or clinical data associated with the response to AZA. Only C reactive protein (CRP) was correlated with the effectiveness of AZA. For each increase of 1 mg CRP, there was a reduction of surgery risk in 8% (RR 0.92, CI 0.86-0.98; P = 0.008). The CRP group> 6 (elevated) had 81% of surgery risk reduction compared to PCR group <6 (OR 0.19 CI 0.05-0.64; P = 0.008). Conclusions: Patients with elevated CRP has a lower rate of surgery in the medium and long term during therapy with AZA. CRP can identify patients with inflammatory stenosis and responsive to clinical treatment.
47

Změny v distribuci subpopulací B lymfocytů u pacientů s Crohnovou chorobou před a po biologické léčbě / Changes in distribution of B lymphocyte subpopulations in patients with Crohn disease before and after biological therapy

Suchá, Renata January 2016 (has links)
B-lymphocytes are lymphoid cells, which are a part of the adaptive/innate immune system and generate antibodies. Recently, many studies have supported hypothesis that different rather minor B-lymphocyte subpopulations may play a direct and indirect role in immunopathogenesis in human pathologies such as Crohn's disease (CD). The aim of current study was therefore to investigate distribution of frequencies of B lymphocyte subpopulations (from transient to mature effector B cell stages) in peripheral blood of healthy subjects (CO), patients with Crohn's disease (CD) and ulcerative colitis (UC). Thus, using 11-colour flow cytometry we have analysed 30 blood samples of individuals, including 14 healthy controls, 11 patients with Crohn's disease and 5 with UC. In 6 patients with CD we have had an opportunity to analyze blood samples collected 2 hours after an administration of anti-TNF therapy. Higher frequencies of memory B-lymphocytes (CD19+ CD27+ , CD19+ CD20+ CD27+ and CD19+ CD20+ CD27+ IgM+) were found in patients with CD as compared to COs. (20.06±13.58%; 17.61±13.48%; 88.60±20.56% vs. 11.75±26.47%; 11.25±26.50%; and 66.82±22.60%), in case of CD19+CD20-CD27-IgM+ B-lymphocytes the difference was statistically significant (57.15±17.21% in CD vs. 19.59±31.79% in CO; p=0.0341), which is in accordance...
48

Evolution and prognostic predictors of Crohn's disease & ulcerative colitis in Hong Kong Chinese. / Evolution and prognostic predictors of Crohn's disease and ulcerative colitis in Hong Kong Chinese / CUHK electronic theses & dissertations collection

January 2010 (has links)
Inflammatory bowel disease (IBD) is associated with lifetime morbidity and the onset of disease frequently occurs in early life. Although IBD manifests throughout all ethnic groups, there has been marked heterogeneity in its incidence, prevalence, manifestation, and outcome. We sought to study the incidence, prevalence, and survival of ulcerative colitis (UC) and to examine the evolution and prognostic predictors of Crohn's disease (CD) and UC among Hong Kong Chinese. A total of 4 studies were performed to address these issues. One longitudinal cohort study examined the incidence, prevalence, survival and phenotypic changes of UC. Two other longitudinal cohort studies evaluated the phenotypic evolution of CD. One of them specifically compared the course of disease between patients with and patients without upper gastrointestinal tract phenotype. The final retrospective study identified clinical factors that predicted the occurrence of corticosteroid dependency and refractoriness in patients with IBD. The annual age-standardized incidence rate and point prevalence of UC per 100,000 Hong Kong Chinese in 2006 were 2.1 (95% CI: 1.1-3.7) and 26.5 (95% CI: 22.6-30.9), respectively. Incidence of UC has increased 6 times over the past two decades. The overall survival of UC patients was similar to the expected survival of the Hong Kong population. Phenotypic changes in CD also occurred in Chinese patients in the same way as the white patients with respect to disease behavior, though at a slower rate. Similar to the white CD patients, the location of disease remained relatively stable over the course of disease. Chinese CD patients had more upper gastrointestinal tract phenotype which predicted the need of surgery and subsequent hospitalization. On the other hand, the rate of proximal extension of UC was less than 25% after 10 years. In CD, thrombocytosis predicted, whereas colonic disease negatively predicted corticosteroid dependency. Stricturing CD was associated with corticosteroid refractoriness. In UC, thrombocytosis and extensive colitis predicted corticosteroid dependency, whereas anemia predicted corticosteroid-refractory disease. The results of these studies are important in the planning of health service and they also assist in the formulation of treatment strategy. / Chow, Kai Lai. / "May 2009." / Advisers: Francis KL Chan; Joseph JY Sung. / Source: Dissertation Abstracts International, Volume: 72-01, Section: B, page: . / Thesis (M.D.)--Chinese University of Hong Kong, 2010. / Includes bibliographical references (leaves 193-235). / 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 Company, [200-] System requirements: Adobe Acrobat Reader. Available via World Wide Web.
49

Ultrazvučna dijagnostika upalnih oboljenja creva u komparaciji sa magnetnom rezonancom u dečjem i adolescentnom dobu / Ultrasound diagnosis of inflammatory bowel disease in comparison with magnetic resonance imaging in children and adolescence

Jecković Mihajlo 28 September 2016 (has links)
<p>UVOD: Hronične inflamatorne bolesti se ispoljavaju kao Kronova bolest i ulcerozni kolitis. Njihova značajnost ogleda se u hronicitetu kao i u stepenu u kom ograničavaju rast i razvoj dece i omladine. Brojne su posledice ovih oboljenja: dugotrajno izostajanje sa nastave, ograničavanje životnih aktivnosti i pojava komplikacija koje neretko zahvataju i druge organske sisteme. Etiologija je i dalje nerazja&scaron;njenja navodeći kao značajan hronični inflamatorni proces u genetski uslovljenih pojedinaca a provociranih nekim infektivnim agensom. Početkom 21. veka genetska istraživanja su otkrila osnovu nasleđivanja hroničnih inflamatornih oboljenja povezanih sa NOD2 genom. Kako je u pitanju organskim sistem koji je ograničeno pristupačan kliničkom pregledu, osnovu dijagnostike čine radiolo&scaron;ke metode. Kako je potrebno sprečiti kontinuirano izlaganje &scaron;tetnom dejstvu rendgenskog zračenja istraživanja se usmeravaju ka UZ i magnetnoj rezonanca. Na&scaron;e istraživanje se baziralo na mogućnostima ovih dveju metoda u svakodnevnom radu za dijagnostiku i dalje praćenje hroničnih inflamatornih bolesti creva. CILJEVI: Utvrditi senzitivnost i specifičnost ultrazvučne dijagnostike i magnetne resonance kod upalnih oboljenja creva u dečjem i adolescentnom uzrastu. Definisati i uporediti prednosti i ograničenja ultrazvučne dijagnostike sa dijagnostikom magnetne rezonace kod upalnih obolenja creva u dečjem i adolescentnom uzrastu. MATERIJAL I METODE: U istraživanje je uključeno 62. dece i adolescenata u toku prvog ataka bolesti ili ponovljenim fazama bolesti ili tokom redovnog praćenja u remisiji. Obuhvaćeni uzrast je od 4. do 18. godina. Potom su razvrstani u grupe na osnovu vrste pregleda i prisustva zadebljanja crevnog zida na A i B (pregled UZ), gde je A grupa imala zabeleženo zadebljanje crevnog zida preko 3 mm, a kod dece u grupi B debljina crevnog zida je bila između 2,5-3 mm. Sa druge strane na osnovu pregleda magnetnom rezonancom podeljeni su u A1 i B1 grupe, takođe po kriterijumu zadebljanja crevnog zida većeg od 3 mm (A1), odnosno između 2,5-3 mm (B1). Istraživanje je sprovedeno na Institutu za zdravstvenu za&scaron;titutu dece i omladine Vojvodine i Institutu za radiologiju Kliničkog centra Vojvodine. Prvi pregled načinjen je UZ a potom je načinjen pregled magnetnom rezonanacom. Podaci su obrađivani retrospektivno i prospektivno. Kriterijumi za uključivanje u studiju pored uzrasta bili su radiolo&scaron;ki: zadebljanje crevnog zida &gt;3mm, postojanje naru&scaron;ene arhitektonike crevnog zida, zadebljanje pojedinih crevnih segmenata-dužina segmenta, znaci fibroze, odsustvo peristaltike, izražena hiperemija na kolor Doppleru, transmuralni znaci upale, uvećani mezenterijalni limfni nodusi kao i kontrolni pregledi kod dece sa ranije ustanovljenom dijagnozom. Načinjena je endoskopija sa biopsijom radi postavljanja definitivne dijagnoze, potom se pristupilo statističkoj obradi dobijenih podataka. Izračunate su prosečne i standardne devijacije i frekvencije kao i pripadajući procenti. Određivane su maksimalne i minimalne vrednosti, medijane i interkvartalni raspon. Dobijeni podaci prikazani su u grafikonima i tabelama. Za parametrijske varijable upotrebljavan je Man &ndash; Vitni U test. Za kategoričke vrednosti upotrebljeni su &chi;2 i Fi&scaron;erov test. Nadalje su određivane senzitivnost, specifičnost kao i pozitivne i negativne prediktivne vrednosti. Veze između dva parametra uspostavljene su pomoću Pirsonove korelacione analize i linearnim regresionim modelom. Upotrebljen je program za obradu podataka SPSS 21 Statistics,a kao statistički značajne vrednosti uzete su vrednosti p&lt;0,05. REZULTATI: Nakon statističke obrade nije zabeležena signifikantnost u pogledu zastupljenosti hroničnih inflamatornih bolesti među polovima. Statistička značajnost pronađena je u pogledu uzrasta dece u akutnoj fazi kao i remisiji bolesti. Statistička značajnost je dobijena za posmatranu debljinu crevnog zida, hiperemiju creva, prisustvo fibroze u digestivnom traktu. Primećeno je da UZ bolje razgraničava decu sa akutnim oboljenjem po pitanju zahvaćenosti segmenata. Ostala posmatrana obeležja nisu nakon statističke obrade imala statistički značaju razliku kada se procenjuju ultrazvučno ili magnetnom rezonancom. ZAKLJUČAK: Inicijalne hipoteze ovog istraživanja su nakon obrade podataka i potvrđene. Određivanjem senzitivnosti i specifičnosti UZ i MR dobijene su sledeće vrednosti: senzitivnost UZ je 88,4% naspram 92,3% koliko ima pregled magnetnom rezonancom. U pogledu specifičnosti UZ ima 88% a magnetna rezonanca 91,6%. Verifikovano je da magnetna rezonanca bolje razvrstava decu u akutnoj fazi bolesti kao i decu u remisiji. Rezultati pozitivnih i negativnih verovatnoća odnosa ne predviđaju neuspeh nijednim od ova dva pregleda.</p> / <p>INTRODUCTION: Chronic inflammatory diseases are manifested through two clinical entities: Crohn&#39;s disease and ulcerative colitis. Their significance lies in the chronicity and the degree to which they restrict the growth and development of children and youth. There are many consenquences that come with the very nature of the disease, in addition to long-term absence from school, limiting life activities and the occurrence of complications that often affect other organ systems. The etiology of the disease has long been in favor of the theory that a chronic inflammatory process in genetically conditioned individual is provoking an inflammation due to a certain infectious agent. However, a step closer was made regarding the etiology of the disease - when the genetic basis of inheritance studies have revealed chronic inflammatory bowel diseases were associated with NOD2 gene. It is particularly important to prevent continuous exposure to the harmful effects of X-rays. Therefore, numerous studies have been made towards the validation of complementarity, accuracy and diagnostic capabilities of ultrasound and magnetic resonance imaging as noninvasive techniques. Our research was based on the capabilities of these two methods in their daily work for diagnosis and follow-up of chronic inflammatory bowel disease. OBJECTIVES: The objectives were to determine the sensitivity and specificity of ultrasound and magnetic resonance imaging in inflammatory bowel disease in children and adolescents. Furthermore, the aim was to define and compare the advantages and limitations between ultrasound diagnosis and magnetic resonance in inflammatory bowel disease in children and adolescents. MATERIAL AND METHODS: The study included 62 children and adolescents during the first attack of disease or recurrent stages of the disease, or during regular monitoring in remission. Patients included children of both sexes, aged 4-18. Then they were sorted into groups based on the type of the examination and the presence of a thickening of the intestinal wall into groups A and B - in these groups children were examined by ultrasound, A group had observed thickening of the intestinal wall &gt; 3 mm whereas children in group B had had thickening of the intestinal wall between 2,5-3 mm. Based on the review of MRI children were divided into groups A1 and B1, also according to the criterion of bowel wall thickening greater than 3mm (A1) and between 2,5-3mm (B1). The research was conducted at the Institute for Health Protection of Children and Youth and the Institute of Radiology, Clinical Center of Vojvodina. The first review was made by ultrasound, followed by the review of magnetic resonance. Data were analyzed retrospectively and prospectively. Criteria for inclusion in the study were: thickening of the intestinal wall greater than 3 mm, the existence of disturbed intestinal wall architectural structure, no clear distinction of layers, abnormal thickening of certain intestinal segments, signs of fibrosis, the absence of peristalsis, expressed hyperemia on color Doppler, transmural inflammation, increased mesenterial lymph nodes as well as check-ups for children with previously established diagnosis. Endosccopy with biopsy has made for the definitive diagnosis and then we approached statistical analysis of the data obtained. The data are presented in graphs and tables. For parametric variables we used Man - Whitney U test. For categorical values &chi;2 and Fisher&#39;s test were used. Further the sensitivity, specificity and positive and negative predictive values were determined. Relationship between these two parameters were established using Pearson correlation analysis and linear regression model. For data processing we used the program SPSS Statistics 21, statistically significant values were taken p values &lt;0.05. RESULTS: After statistical analysis there was no for the number of chronic inflammatory diseases between the sexes. Statistical significance was found in terms of age of the children during the acute phase as well as remission. Statistical significance was obtained for the observed thickness of the intestinal wall, intestinal hyperemia, the presence of fibrosis in the digestive tract. It was noted that US better demarcates children with acute disease in terms of involvement of segments. Other features are not observed as significant after the statistical analysis. CONCLUSION: The initial hypothesis of this study, after data processing were confirmed. By determining the sensitivity and specificity of ultrasound MRI results we came to the following results: sensitivity of ultrasound was 88,4% versus 92,3%, for magnetic resonance. In terms of specifics UZ has a 88% and 91,6% of magnetic resonance imaging. The classification of children in the acute phase of the disease as well as children in remission was better when MRI was used. The results of positive and negative predictions do not predict the probability of failure in neither of these methods.</p>
50

Comparação entre a colonoscopia com cromoscopia e com o NBI para detecção de displasia e neoplasias colônicas em pacientes com doença inflamatória intestinal de longa data: estudo randomizado e controlado / Comparison between colonoscopy with chromoendoscopy and NBI for the detection of colonic neoplasia and dysplasia in patients with inflammatory bowel disease of long standing: a randomized controlled trial

Feitosa, Flávio de Castro 14 May 2013 (has links)
Introdução: Pacientes com doença inflamatória intestinal (DII) tem risco aumentado de desenvolvimento de displasias e neoplasias colônicas, a partir de 8 anos de diagnóstico da doença. O desenvolvimento de técnicas que melhorem a acurácia diagnostica destas displasias tem impacto científico, econômico e na prática clínica. Materiais and Métodos: O NBI (narrow band image) tem sido descrito como um método comparável à cromoscopia para a detecção de diversos tipos de cânceres do trato gastrointestinal superior e do sistema respiratório. Neste estudo, as duas técnicas foram comparadas em pacientes com DII de longa data. Resultados: 34 pacientes foram randomizados (18 para a cromoscopia e 16 para o NBI). 66,7% e 68,8% dos pacientes eram do gênero feminino, com média de idade de 48,5 e 49,6 anos, nos grupos cromoscopia e NBI, respectivamente. 61,1% dos pacientes do grupo cromoscopia e 56,2% do grupo NBI tinham doença de Crohn (DC). Nenhuma destas variáveis alcançou diferença estatísticamente significante na comparação entre os grupos: comportamento da DC, localização da retocolite ulcerativa, presença de atividade inflamatória endoscópica e sintomas no momento do exame. O tempo médio gasto para a realização do exame foi de 45,8 minutos no grupo cromoscopia e de 34,1 minutos no grupo NBI. Sobre a presença de displasias, 22,2% dos pacientes no grupo cromoscopia apresentaram lesões displásicas no exame histológico (todas as biopsias foram direcionadas pela presença de lesões), enquanto que, no grupo NBI, nenhuma lesão displásica foi encontrada (qui-quadrado= 4,477; &#8721;crítico> 3,841, considerando um erro a de 5%). Foram encontrados três lesões adenomatosas e uma lesão displásica tipo DALM (dysplasia-associated lesion or mass), típica da DII. Quando realizada a correção de Yattes, ara amostras pequenas, foi observado &#8721; = 2,180 (&#8721;crítico> 3,841, considerando um erro a de 5%). Conclusões: Esses dados mostram diferença estatística entre as técnicas endoscópicas (NBI e cromoscopia). Eles revelam uma forte tendência estatística de superioridade da cromoscopia, comparada ao NBI. / Introduction: Patients with inflammatory bowel disease (IBD) are under increased risk of colonic dysplasia and neoplasia, approximately, 8 years after diagnosis. The development of techniques that improve the diagnostic ability to detect those dysplasias has scientific, economic and practical impact. Materials and Methods: The NBI (narrow band image) has been described as a valuable method comparable to chromoendoscopy for the detection of many cancers of the upper digestive and respiratory systems. The two techniques were compared in this study in patients with IBD after at least 8 years from diagnosis. Results: 34 patients were randomized (18 for chromoendoscopy and 16 for NBI). 66.7% and 68.8% were female, mean age of 48.5 and 49.6 years, in chromoendoscopy and NBI groups, respectively. The mean disease duration was 14.7 (DP 6.5 years 2) and 15.6 years (DP 9.0 years 2) for chromoendoscopy and NBI, respectively. 61.1% of patients in the chromoendoscopy group and 56.2% in the NBI had Crohn\'s disease (CD). None of those epidemiological data, extension and behavior of CD and Ulcerative Colitis, use of medications, endoscopic grade of disease activity and symptoms at the time of the exam disclosed statistical significance. The average time of examination was 45.8 minutes for the chromoendoscopy group, versus 34.1 minutes for the NBI group. Regarding the presence of dysplasia, 22,2% of patients in the chromoendoscopy group showed some dysplastic lesions on histological examination (all biopsies directed to mucosal lesions), while no patients in the NBI group had such lesions (chi-square = 4.477; &#8721;critical> 3.841, considering an error of 5%). We found three adenomas and one dysplastic lesions of the type DALM (dysplasia-associated lesion or mass), typical of IBD. When we look at correcting by means of the Yates correction test for small samples, we observed &#8721; = 2,180 (&#8721;critical > 3.841, considering an error of 5%). Conclusion: Those data have shown statistical difference between the endoscopic techniques (NBI and chromoendoscopy). They revealed a strong statistical tendency of superiority of chromoendoscopy compared to NBI.

Page generated in 0.0389 seconds