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1.
Arq. gastroenterol ; 57(1): 69-73, Jan.-Feb. 2020. tab
Article in English | LILACS | ID: biblio-1098064

ABSTRACT

ABSTRACT BACKGROUND: Patients with inflammatory bowel disease (IBD) vaccinated for hepatitis B have a low success rate in achieving protective antibody levels. The main factors suggested for this are IBD itself and the use of immunosuppressive drugs. OBJECTIVE: To evaluate the concentration of anti-HBs antibodies and to verify factors associated with the effectiveness of hepatitis B vaccination in patients with IBD. METHODS: This is a prospective, consecutive, observational, descriptive and analytical, non-randomized, qualitative study that evaluated the levels of anti-HBs antibodies in IBD patients at the Interdisciplinary Inflammatory Bowel Disease Clinic of the Family and Community Health Unit of UNIVALI - Itajaí, Santa Catarina. RESULTS: Thirty-six patients were vaccinated against hepatitis B virus (HBV), of which 29 were female. The average age was 46.2 years. Regarding the type of IBD, twenty-four patients had Crohn's disease and the duration of inflammatory bowel disease was 74 months. Fifteen patients were on concomitant immunosuppressive therapy. The effective response rate to HBV vaccine was 72.2%, verified by anti-HBs titration ≥10 UI/L. Statistical analysis revealed a negative response to vaccination in patients with Crohn's disease and immunosuppressive drugs. CONCLUSION: The success rate of HBV immunization in IBD patients is low compared to the general population. Type of disease and use of immunosuppressive drugs appear to influence the vaccine response.


RESUMO CONTEXTO: Os pacientes com doenças inflamatórias intestinais (DII) vacinados para hepatite B possuem baixa taxa de sucesso em alcançar níveis protetores de anticorpos. Os principais fatores sugeridos para isso são a própria DII e o uso de medicamentos imunossupressores. OBJETIVO: Avaliar a titulação de anticorpos anti-HBs e verificar fatores associados a efetividade da vacinação contra hepatite B em pacientes com DII. MÉTODOS: Trata-se de um estudo prospectivo e consecutivo, de caráter observacional, descritivo e analítico, não-randomizado, qualiquantitativo, que avaliou a titulação de anticorpos anti-HBs em pacientes portadores de DII no Ambulatório Interdisciplinar de Doença Inflamatória Intestinal da Unidade de Saúde da Família e Comunitária da UNIVALI - Itajaí, Santa Catarina. RESULTADOS: Trinta e seis pacientes foram vacinados contra o vírus da hepatite B (VHB), destes, 29 eram do sexo feminino. A média de idade foi de 46,2 anos. Em relação ao tipo de DII, 24 pacientes eram portadores de doença de Crohn e o tempo médio de doença inflamatória intestinal encontrado foi de 74 meses. Quinze pacientes estavam em uso de terapia imunossupressora concomitante à vacinação. A taxa de resposta à vacina contra o VHB foi de 72,2%, verificada através de titulação de anti-HBs ≥10 UI/L. A análise estatística revelou uma resposta negativa à vacinação em pacientes em uso de medicamentos imunossupressores e portadores de doença de Crohn. CONCLUSÃO: A taxa de sucesso na imunização contra o VHB em pacientes com DII é baixo quando comparado à população em geral. Tipo de doença e uso de medicamentos imunossupressores parecem desempenhar influência na resposta vacinal.


Subject(s)
Humans , Male , Female , Adult , Colitis, Ulcerative/immunology , Crohn Disease/immunology , Hepatitis B virus/immunology , Hepatitis B Vaccines/immunology , Hepatitis B/diagnosis , Hepatitis B/prevention & control , Hepatitis B Antibodies/blood , Colitis, Ulcerative/drug therapy , Crohn Disease/drug therapy , Prospective Studies , Hepatitis B Vaccines/administration & dosage , Qualitative Research , Seroconversion , Hepatitis B/immunology , Hepatitis B Surface Antigens/immunology , Immunosuppressive Agents/therapeutic use , Middle Aged
2.
Journal of Zhejiang University. Medical sciences ; (6): 665-678, 2020.
Article in Chinese | WPRIM | ID: wpr-879928

ABSTRACT

The "lung and large intestine being interior-exteriorly related" is one of the classical theories in traditional Chinese medicine, which indicates a close correlation between the lung and large intestine in physiology and pathology, and plays a pivotal role in guiding the treatment of the lung and bowel diseases. Modern medicine has revealed some connections between the lung and large intestine in tissue origin and mucosal immunity, and preliminarily illuminated the material basis and possible regulatory mechanism of the theory. Recently, this theory has been applied to guide the treatment of refractory lung and intestine diseases such as COVID-19 and ulcerative colitis and has obtained reliable efficacy. Existing research results show that the anatomical homogeneity of lung and large intestine promotes the correlation between lung-bowel mucosal immunity, and mucosal immunity and migration and homing of innate lymphocytes are one of the physiological and pathological mechanisms for lung and large intestine to share. Under the guidance of this theory, Chinese medicines with heat-clearing and detoxifying or tonic effects are commonly used in the treatment of the lung and intestinal diseases by regulating lung-bowel mucosal immunity and they can be candidate drugs to treat lung/intestinal diseases simultaneously. However, the existing studies on immune regulation are mainly focused on the expression levels of sIgA and cytokines, as well as the changes in the number of immune cells such as innate lymphocytes and B lymphocytes. While the following aspects need further investigation: the airway/intestinal mucous hypersecretion, the functional changes of pulmonary and intestinal mucosal barrier immune cells, the dynamic process of lung/intestinal mucosal immune interaction, the intervention effect of local pulmonary/intestinal microecology, the correlation and biological basis between the heat-clearing and detoxifying effect and the tonic effect, and its regulation of pulmonary/intestinal mucosal immunity. In this paper, we try to analyze the internal relationship between lung and intestine related diseases from the point of view of the common mucosal immune system of lung and intestine, and summarize the characteristics and rules of traditional Chinese medicine compound and its active ingredients, which have regulatory effect on lung and intestine mucosal immune system, so as to further explain the theoretical connotation of "lung and large intestine being interior-exteriorly related" and provide reference for the research and development of drugs for related diseases.


Subject(s)
Humans , COVID-19/immunology , Colitis, Ulcerative/immunology , Intestine, Large/immunology , Lung/immunology , Medicine, Chinese Traditional
3.
Braz. j. infect. dis ; 18(1): 60-64, Jan-Feb/2014. tab
Article in English | LILACS | ID: lil-703052

ABSTRACT

Objective: Inflammatory bowel disease (IBD) is a chronic disorder involving the gastrointestinal tract. Immunosuppressive drugs are usually prescribed to treat IBD patients, and this treatment can lead to tuberculosis reactivation. This paper aimed to analyze tuberculin skin test (TST) results in IBD patients at a reference center in Brazil. Methods: We evaluated TST results in IBD patients using a cross-sectional study. We also analyzed the medical records of patients treated at a reference IBD outpatient unit where TST is routinely performed. Results: We reviewed 119 medical records of 57 (47.9%) Crohn's disease (CD), 57 (47.9%) ulcerative colitis (UC) and 5 (4.2%) indeterminate colitis (IC) patients. The mean (SD) age was 43.5 (13.7) years old. TST was positive in 24 (20.2%) of the patients. TST was positive in 16/57 (28.1%) UC and 6/57 (10.5%) CD patients (prevalence ratio [PR] 2.7). Forty-one patients (34.5%) were taking immunosuppressive drugs (azathioprine or prednisone) at the time of the TST, and six of these patients (14.6%) had positive test results. Two patients using infliximab had negative TST results. Thirty-five of the 41 patients (85.4%) on immunosuppressive treatment were anergic compared with 73.1% (57/78) of the untreated patients (PR 1.2). Conclusions: Patients with IBD have TST results similar to the general Brazilian population. Within the IBD population, CD patients have a lower frequency of TST positivity than UC patients. .


Subject(s)
Adult , Female , Humans , Male , Middle Aged , Endemic Diseases , Inflammatory Bowel Diseases , Tuberculin Test , Tuberculosis/diagnosis , Brazil/epidemiology , Cross-Sectional Studies , Colitis, Ulcerative/epidemiology , Colitis, Ulcerative/immunology , Crohn Disease/epidemiology , Crohn Disease/immunology , Inflammatory Bowel Diseases/epidemiology , Inflammatory Bowel Diseases/immunology
4.
Recife; s.n; 2014. 84 p. ilus.
Thesis in Portuguese | LILACS | ID: lil-720604

ABSTRACT

Fatores genéticos e imunológicos foram associados à patogenese da doença inflamatória intestinal (DII), ela inclui Retocolite Ulcerativa Idiopática (RCUI) e doença de Crohn (CD). A hiperresponsividade de celulas B e a autoreatividade de células T contribuem para a polarização da resposta imune Th1 em CD e Th2 em RCUI. Sítios polimórficos na região 3'não traduzida do gene HLA-G (completa) e região promotora dos genes IL-10 ( - 1082A/G e - 819C/T) e TNF (completa) foram associados a susceptibilidade a diversas doenças. Estudamos 217 portadores de DII e 249 doadores saudáveis, pareados por sexo e idade. A ascendência africana foi maior em RCUI e caucasiana em DC (p =0,005). Comparados aos controles, o genótipo HLA - G 14bpINS - INS (associado com baixa expressão de HLA - G) (p =0,006) e IL - 10 - 1082G - G (associado com alta expressão de IL - 10) (p =0,030) foram menos frequentes em pacientes com DC, possivelmente contribuindo para a polarização Th1, mas não foram encontradas diferenças nas frequências de TNF. Em RCUI, as frequências do alelo HLA-G +3003C (p =0,015) e genótipo +3003C-T (p =0,003) estavam aumentadas. Apesar da alta frequência do alelo T em africanos, após estratifica rmos por ascendência, o genótipo +3003C - T ainda estava mais frequente em pacientes com ascendência africana (p =0,012)...


Genetic and immunological factors have been associated with inflammatory bowel disease (IBD) pathogenesis, encompassing ulcerative colitis (UC) and Crohn's disease (CD).B cell hyperresponsiveness and T cell auto-reactivity have contributedto a Th1 polarization immune response in CD and a Th2 polarization in UC. Sincepolymorphic sites at the 3’untranslated region (3’UTR)...


Subject(s)
Colitis, Ulcerative/genetics , Colitis, Ulcerative/immunology , Crohn Disease/genetics , Crohn Disease/immunology , Inflammatory Bowel Diseases/epidemiology , Inflammatory Bowel Diseases/genetics , Inflammatory Bowel Diseases/immunology , HLA Antigens/genetics , HLA Antigens/immunology , Tumor Necrosis Factor-alpha/genetics , Tumor Necrosis Factor-alpha/immunology , /genetics , /immunology
5.
Gastroenterol. latinoam ; 23(2): 69-75, abr.-jun. 2012. tab, graf
Article in Spanish | LILACS | ID: lil-661598

ABSTRACT

Background: Several studies have suggested that Anti-Saccharomyces cerevisiae antibodies (ASCA) and perinuclear anti-neutrophil cytoplasmic antibodies (p-ANCA) are useful serological markers associated with inflammatory bowel disease (IBD). However, neither the indication nor its use in clinical practice have been clearly established. Aim: to assess whether the presence of these markers have a possible diagnostic role and clinical significance. Patients and Methods: Retrospective chart review of 93 patients, average age 42 years, 48 female. ASCA and p-ANCA were determinated by ELISA and IFI. The sensitivity (S), specificity (E), positive and negative predictive values (PPV and NPV), and X2 were determinated. Results: Sixty eight patients with IBD (35 Crohn´s disease (CD), 31 ulcerative colitis (UC), one IBD unclassified and one indeterminate colitis patients) and 25 patients with other gastrointestinal diseases. In the total group of patients the S and E of ASCA and p-ANCA for diagnosis of CD and UC was 48.6 percent, 74.1 percent and 77.4 percent, 82.3 percent respectively. In patients with IBD, the presence of ASCA(+)/p-ANCA(-) had a S, E, PPV, and NPV for diagnosis of CD 37.1 percent, 93.5 percent, 86.7 percent and 56.9 percent respectively. On the other hand, the presence of ASCA(-)/p-ANCA(+) had a S, E, PPV, and NPV for diagnosis of UC 64.5 percent, 85.7 percent, 80 percent and 73.1 percent respectively. The evolution of IBD patients was not associated with the presence of these markers. Conclusions: Our study showed that both p-ANCA and ASCA did not have an important role in the differential diagnosis of CD and UC and in their prognosis. New strategies to differentiate CD and UC and to determinate their prognosis are needed.


Existen estudios que han sugerido que los anticuerpos Anti-Saccharomyces cerevisiae (ASCA) y los anticuerpos anticitoplasma de los neutrófilos perinuclear (p-ANCA), son marcadores serológicos asociados a las enfermedades inflamatorias intestinales (EII). Sin embargo, su indicación y uso en la práctica clínica no han sido aún clarificados. Objetivos: Evaluar si la presencia de estos marcadores posee algún papel en el diagnóstico y pronóstico. Pacientes y Métodos: Noventa y tres pacientes, edad promedio 42 años, 48 mujeres. Los anticuerpos ASCA fueron determinados por técnica de ELISA y los p-ANCA por IFI. Se calculó la sensibilidad (S), especificidad (E), valor predictivo positivo (VPP) y negativo (VPN) y X2. Resultados: Se incluyen sesenta y siete pacientes con EII (35 enfermedad de Crohn (EC), 31 colitis ulcerosa (CU), uno con EII no clasificable y un paciente con Colitis Indeterminada) y 25 pacientes con otras enfermedades gastrointestinales. En el grupo total de pacientes, la S y E de ASCA y p-ANCA para el diagnóstico de EC y CU fue de 48,6 y 74,1 por ciento y 77,4 y 82,3 por ciento respectivamente. En pacientes con diagnóstico establecido de EII, la presencia de ASCA(+)/p-ANCA(-) tuvo una S, E, VPP y VPN para el diagnóstico de EC 37,1, 93,5, 86,7 y 56,9 por ciento, respectivamente. Por otro lado, la presencia de ASCA(-)/p-ANCA(+) tuvo una S, E, VPP y VPN para el diagnóstico de CU 64,5, 85,7, 80 y 73,1 por ciento, respectivamente. La evolución favorable o desfavorable de los pacientes con EII (EC o CU) no se correlacionó con la presencia (positividad) de uno o ambos marcadores (p ≥ 1). Conclusiones: Nuestro estudio demostró que los marcadores serológicos ASCA y ANCA utilizados en conjunto no poseen actualmente un papel importante en la diferenciación de la EC de la CU, como tampoco para establecer un pronóstico de su evolución. Por lo tanto, es necesario encontrar nuevas estrategias para poder diferenciar estos dos cuadros y poder determinar...


Subject(s)
Humans , Male , Female , Child , Adolescent , Adult , Middle Aged , Young Adult , Antibodies, Antineutrophil Cytoplasmic/immunology , Inflammatory Bowel Diseases/diagnosis , Saccharomyces cerevisiae/immunology , Colitis, Ulcerative/diagnosis , Colitis, Ulcerative/immunology , Crohn Disease/diagnosis , Crohn Disease/immunology , Inflammatory Bowel Diseases/immunology , Retrospective Studies , Immunoglobulin A , Biomarkers , Sensitivity and Specificity , Predictive Value of Tests
8.
Saudi Journal of Gastroenterology [The]. 2009; 15 (4): 283-287
in English | IMEMR | ID: emr-102147

ABSTRACT

Ulcerative colitis is a chronic inflammatory disease that affects the colon and rectum. Its pathogenesis is probably multifactorial including the influx of certain cytokines into the colonic mucosa, causing disease activity and relapse. The hypothesis of removing such cytokines from the circulation by leukocytapheresis was implemented to reduce disease activity, maintain remission, and prevent relapse. Many recent reports not only in Japan, but also in the West, have highlighted its beneficial effects in both adult and pediatric patients. Large placebo-controlled studies are needed to confirm the available data in this regard. In this article, we shed some light on the use of leukocyte apheresis in the management of autoimmune diseases, especially ulcerative colitis


Subject(s)
Humans , Leukapheresis/methods , Colitis, Ulcerative/immunology , Autoimmune Diseases/therapy
9.
Rev. méd. Chile ; 136(3): 367-375, mar. 2008. ilus
Article in Spanish | LILACS | ID: lil-484909

ABSTRACT

Inflammatory bowel diseases (IBD) are inflammatory diseases with a multifactorial component that involve the intestinal tract. The two relevant IBD syndromes are Crohn's disease (CD) and ulcerative colitis (UC). One factor involved in IBD development is a genetic predisposition, associated to NOD2/CARD15 and Toll-like receptor 4 (TLR4) polymorphisms that might favor infectious enterocolitis that is possibly associated to the development of IBD. The identification of specific immunologic alterations in IBD and their relationship to the etiology of the disease is a relevant research topic. The role of intra and extracellular molecules, such as transcription factors and cytokines that are involved in the inflammatory response, needs to be understood. The relevance of immunologic molecules that might drive the immune response to a T helper (Th) 1, Th 2 or the recently described Th 17 phenotype, has been demonstrated in animal models and clinical studies with IBD patients. CD and UC predominantly behave with a Th 1 and Th 2 immune phenotype, respectively. Recently, an association between CD and Th 17 has been reported. The knowledge acquired from immunologic and molecular research will help to develop accurate diagnostic methods and efficient therapies.


Subject(s)
Humans , Inflammatory Bowel Diseases/immunology , Colitis, Ulcerative/genetics , Colitis, Ulcerative/immunology , Crohn Disease/genetics , Crohn Disease/immunology , Diagnosis, Differential , /immunology , Genetic Predisposition to Disease , Inflammatory Bowel Diseases/genetics , Interleukins/genetics , Interleukins/immunology , /genetics , /immunology , Polymorphism, Genetic , /genetics , /immunology
10.
Rev. méd. Chile ; 134(8): 960-964, ago. 2006. graf
Article in Spanish, English | LILACS | ID: lil-438365

ABSTRACT

Background: The diagnosis of inflammatory bowel disease is supported by clinical findings and complementary tests. The presence of specific serological markers could be helpful in the characterization of this condition. Aim: To assess the prevalence of ANCA and ASCA in a group of patients with ulcerative colitis (UC) and its association with clinical features. Material and Methods: Sixty four patients with UC in remission (age range 16-72 years, 33 males) were studied. In a venous blood sample ANCA were measured by indirect immunofluorescence and ASCA by enzyme immune assays for IgG and IgA. Results: Forty four percent of patients were positive for ANCA, 9 percent for ASCA and 6 percent for both markers. There was a significant correlation between the presence of ANCA and duration of the UC (<5 years 50 percent, 5-10 years 42.9 percent, 15 years 30 percent) and the number of crises (one crises 31 percent, 2-5 crises 51.9 percent and >5 crises 87.5). The proportion of colectomized patients with positive ANCA was higher (57.1 percent). Conclusions: The prevalence of ANCA in the studied population is similar to the published data. The presence of ANCA was significantly higher in UC patients with shorter evolution, higher number of crises and in those with a history of colectomy. There was a low prevalence of ASCA positive patients.


Subject(s)
Adolescent , Adult , Aged , Female , Humans , Male , Middle Aged , Antibodies, Antineutrophil Cytoplasmic/blood , Colitis, Ulcerative/immunology , Saccharomyces cerevisiae/immunology , Age Factors , Biomarkers/blood , Colectomy , Colitis, Ulcerative/blood , Colitis, Ulcerative/surgery , Diagnosis, Differential , Enzyme-Linked Immunosorbent Assay , Fluorescent Antibody Technique, Indirect , Inflammatory Bowel Diseases/diagnosis
11.
Gastroenterol. latinoam ; 16(3): 229-242, jul.-sept. 2005. ilus
Article in Spanish | LILACS | ID: lil-433864

ABSTRACT

Las enfermedades inflamatorias intestinales (EII), entre las que se incluyen a la enfermedad de Crohn (EC) y colitis ulcerosa (CU), son patologías de etiología multifactorial, en las cuales se ha demostrado en los últimos años que el componente genético tiene un papel relevante. La incidencia de estas patologías ha ido en aumento en los países desarrollados y también en Chile. A pesar de los avances en su estudio, la etiología de las EII no está totalmente esclarecida, aunque es posible reconocer factores genéticos, inmunológicos y ambientales en su patogénesis. Entre los posibles mecanismos propuestos la respuesta alterada a antígenos bacterianos cumpliría un papel relevante en un subgrupo de pacientes con EC quienes presentan alguna mutación en los receptores que reconocen patógenos. Esta revisión analiza avances recientes en el conocimiento de las EII y destaca los hallazgos relacionados con alteraciones en los componentes del sistema inmune gastrointestinal y su posible relación con la patogenia de las EII. Un análisis detallado de la interrelación entre los diferentes integrantes del sistema inmune de la mucosa intestinal, tales como las células dendríticas, epiteliales, de Paneth y los linfocitos T y su actividad defectuosa podría brindar nuevas herramientas para el diseño de estrategias experimentales y terapéuticas de las EII.


Subject(s)
Humans , Colitis, Ulcerative/immunology , Crohn Disease/immunology , Antibodies , Dendritic Cells/immunology , Paneth Cells/immunology , Inflammatory Bowel Diseases/epidemiology , Inflammatory Bowel Diseases/genetics , T-Lymphocytes/immunology , Biomarkers , Mutation , Polymorphism, Genetic , Genetic Predisposition to Disease , Immune Tolerance
13.
Arq. gastroenterol ; 35(4): 283-91, out.-dez. 1998. ilus, tab
Article in Portuguese | LILACS | ID: lil-229383

ABSTRACT

Sao quantificadas e analisadas as características histológicas dos macrófagos na mucosa colônica na doença de Crohn e na retocolite ulcerativa inespecífica. Foram estudados 12 pacientes com doença de Crohn 19 com retocolite ulcerativa inespecífica e 10 espécimes de mucosa retal representando o grupo controle, de acordo com o seguinte modelo: período I (PI) = pré-tratamento; período II (PII)= até dois anos de evoluçao e período III (PIII)= mais de dois anos de evoluçao. Os macrófagos foram identificados em mucosa colônica pelo monoclonal CD68 através do método de imunoperoxidase. A quantificaçao dos macrófagos foi feita através de análise de imagem computadorizada cromática, que expressa em porcentagem a área (mm2) ocupada pelas células CD68 positivas. A porcentagem da área ocupada pelos macrófagos se apresentava aumentada em ambas as doenças, em todos os períodos estudados, quando comparada com o grupo controle, porém sem diferença estatisticamente significante. A distribuiçao dos macrófagos dentro da mucosa do grupo controle foi subepitelial, enquanto na dos doentes atingiu toda a altura da mucosa, concentrando-se nas bases das úlceras e ao longo das fissuras. Na doença de Crohn as células CD68 positivas facilitaram a identificaçao dos microgranulomas, eventualmente despercebidos na coloraçao de hematoxilina-eosina. Embora nao houvesse diferença entre pacientes e controles quanto à área ocupada pelos macrófagos, a distribuiçao diferente pode sugerir a participaçao dos macrófagos na lesao destas duas doenças, embora nao permitam diagnóstico diferencial, possivelmente pela variabilidade dos valores. O CD68 nao identificou os diferentes estados funcionais dos macrófagos, mas a sua posiçao na mucosa sugere que com as fissuras e úlceras, sua funçao principal seria a fagocitose, e nos demais sítios a de célula apresentadora de antígenos e recrutadora de outras células inflamatórias.


Subject(s)
Child , Humans , Male , Female , Adolescent , Child, Preschool , Infant , Colitis, Ulcerative/immunology , Colon/pathology , Crohn Disease/immunology , Intestinal Mucosa/pathology , Macrophages/pathology , Biopsy , Colitis, Ulcerative/pathology , Colon/chemistry , Crohn Disease/pathology , Hematoxylin , Intestinal Mucosa/chemistry , Macrophages/chemistry
14.
Arq. gastroenterol ; 35(3): 223-36, jul.-set. 1998. tab
Article in Portuguese | LILACS | ID: lil-225369

ABSTRACT

Para melhor compreensao dos mecanismos imunológicos envolvidos na mucosa colônica da retocolite ulcerativa inespecífica e da doença de Crohn, foram estudadas as mucosas colônicas de 19 crianças com retocolite ulcerativa inespecífica, 12 crianças com doença de Crohn e um grupo controle representado por 10 espécimes de mucosa retal de pacientes com obstipaçao intestinal crônica inespecífica. As mucosas foram coradas com a técnica de imunoperoxidase, e os linfócitos T (total e auxiliador) e B foram identificados com marcadores específicos - para os linfócitos T total, CD3, linfócitos T auxiliador, CD4 e para o B, CD20 - e quantificadas na lâmina própria através de análise de imagem computadorizada cromática em diferentes períodos evolutivos da doença: PI (antes do tratamento), PH (até dois anos de evoluçao) e PIII (com mais de dois anos de evoluçao). No epitélio superficial foi quantificado apenas o linfócito T total, através de contagem linear. O marcador CD3, do linfócito T total, esteve aumentado no epitélio (superficial e glandular) e na lâmina própria das mucosas doentes em relaçao às do controle. Na mucosa dos pacientes, esteve distribuído difusamente, concentrando-se ao redor dos microgranulomas, no interior dos nódulos linfóides e nas áreas lesadas em proximidade aos macrófagos. Na doença de Crohn, PI, sua média na lâmina própria diferiu significantememte em relaçao ao controle. Comportamento semelhante ocorreu com o marcador CD20 do linfócito B nas mucosas doentes, cujas médias foram superiores aos do controle, embora apenas no PI da doença de Crohn essa diferença tenha sido significativa. O marcador CD4 do linfócito T auxiliador também apresentou nas mucosas doentes médias elevadas em relaçao à mucosa controle, mas sem significaçao estatística. As células CD4+ distribuíram-se difusamente por toda altura da mucosa doente, concentrando-se ao redor dos nódulos linfóides e dos microgranulomas. De modo geral, todos os marcadores estudados neste trabalho apresentaram médias superiores aos do grupo controle com diferentes graus de significância nos diferentes períodos estudados. Esses resultados confirmam a participaçao desses elementos na patogênese da retocolite ulcerativa inespecífica e da doença de Crohn. Os achados de correlaçao positiva entre os marcadores CD4 e CD20 na retocolite ulcerativa inespecífica e CD3 e CD20...


Subject(s)
Humans , Male , Female , Infant , Child, Preschool , Child , Adolescent , B-Lymphocytes/immunology , B-Lymphocytes/pathology , Colitis, Ulcerative/immunology , Colitis, Ulcerative/pathology , Crohn Disease/immunology , Crohn Disease/pathology , Intestinal Mucosa/immunology , Intestinal Mucosa/pathology , T-Lymphocytes/immunology , T-Lymphocytes/pathology , Biomarkers , Colon/immunology , Colon/pathology , Lymphocyte Count , T-Lymphocytes, Helper-Inducer
15.
Arq. gastroenterol ; 35(2): 143-51, abr.-jun. 1998. ilus, graf
Article in Portuguese | LILACS | ID: lil-217985

ABSTRACT

Alguns estudos têm realçado a importância da expressao HLA-DR no epitélio superficial e na lâmina própria da mucosa dos pacientes portadores de retocolite ulcerativa inespecífica e doença de Crohn. Neste estudo foram quantificadas e analisadas as características histológicas da expressao HLA-DR na mucosa colônica nestas duas doenças. Foram estudados 12 pacientes em doença de Crohn, 19 com retocolite ulcerativa inespecífica e 10 espécimes de mucosa retal representando o grupo controle, de acordo com o seguinte modelo: período I = pé-tratamento; período II = até dois anos de evoluçao e período III = mais de dois anos de evoluçao. A expressao HLA-DR foi identificada pelo monoclonal HLA-DR (DAKO) em espécimes de mucosa colônica pelo método de imunoperoxidase. A quantificaçao da expressao HLA-DR na lâmina própria foi feita através de análise de imagem computadorizada cromática, que expressa em porcentagem a área (mum2) ocupada pelas células HLA-DR positivas e no epitélio superficial quantificada por uma avaliaçao semi-quantitativa. Na lâmina própria da mucosa dos doentes a expressao HLA-DR esteve aumentada em todos osperíodos estudados, quando comparada com o grupo controle, porém sem diferença estatística. A distribuiçao da expressao HLA-DR na lâmina própria foi em localizaçoes correspondentes aos macrófagos e aos linfócitos B. O epitélio colônico superficial dos pacientes com retocolite ulcerativa inespecífica e com retocolite ulcerativa inespecífica e com doença de Crohn foi HLA-DR positivo em 86,95 por cento e 80,96 por cento, respectivamente, nos três períodos estudados. O epitélio superficial de todas as mucosas retais do grupo controle nao mostraram a expressao HLA-DR. A presença da expressao HLA-DR no epitélio colônico superficial dos pacientes com retocolite ulcerativa inespecífica e doença de Crohn e sua ausência no epitélio do grupo controle foi um achado de grande importância neste estudo. É consenso entre os diversos autores que a expressao HLA-DR representa uma intensa açao local das citocinas indutoras desta expressao na mucosa colônica dos pacientes com retocolite ulcerativa inespecífica e donça de Crohn, representando a sua ativaçao em resposta ao antígeno invasor da mucosa intestinal. O estudo da expressao HLA-DR na lâmina própria nao foi conclusivo, pois o resultado nao representou diferença significativa em relaçao ao controle.


Subject(s)
Humans , Male , Female , Infant , Child, Preschool , Child , Adolescent , Colitis, Ulcerative/immunology , Colon/immunology , Crohn Disease/immunology , HLA-DR Antigens/analysis , Intestinal Mucosa/immunology , Cross-Sectional Studies , Longitudinal Studies , Prospective Studies , Retrospective Studies
16.
The Korean Journal of Internal Medicine ; : 7-15, 1997.
Article in English | WPRIM | ID: wpr-209023

ABSTRACT

OBJECTIVES: Immunologic studies have characterized the numbers and types of inflammatory cells in diseased inflammatory bowel disease (IBD) mucosa but have yielded conflicting results regarding intestinal lymphocytes activation in IBD. We investigated the levels of lymphocytes subsets, interleukin-2 receptor, transferrin receptor, and T cell receptors in mainly isolated lamina propria lymphocytes. Including intraepithelial lymphocytes of normal colonic mucosa or IBD (ulcerative colitis and Crohn's disease) mucosa to understand the pathogenesis of IBD. We have results from this study. RESULTS: 1) In comparing ulcerative colitis with control, IL-2R (p < 0.05), TR (p < 0.01), and CD3/HLA-DR (<0.05) showed a significant increase. 2) In comparing Crohn's disease with control, CD3 (P < 0.05), TCR alpha/beta (p < 0.01) and TCR gamma/delta (p < 0.05) showed a significant decrease. 3) In comparing Crohn's disease with ulcerative colitis, CD19 (p < 0.01), TR (p < 0.01), TCR alpha/beta (p < 0.01) and TCR gamma/delta (p < 0.05) showed a significant decrease. CONCLUSION: From these results, there are increased T cell markers, IL-2R, TR, and CD3/HLA-DR in UC, but differently, decreased CD3, TCR alpha/beta and TCR gamma/delta in CD compared with control. In addition, definitive differences in lymphocytes markers, CD19, TR, TCR alpha/beta and TCR gamma/delta, which are higher in UC than in CD, may elucidate the different immunopathogenesis between UC and CD.


Subject(s)
Adult , Female , Humans , Male , CD3 Complex/analysis , Colitis, Ulcerative/pathology , Colitis, Ulcerative/immunology , Colitis, Ulcerative/diagnosis , Comparative Study , Crohn Disease/pathology , Crohn Disease/immunology , Crohn Disease/diagnosis , Diagnosis, Differential , HLA-DR Antigens/analysis , Immunophenotyping , Intestinal Mucosa/pathology , Intestinal Mucosa/immunology , Middle Aged , Receptors, Antigen, T-Cell/analysis , Receptors, Interleukin-2/analysis , Receptors, Transferrin/analysis , Sensitivity and Specificity , Culture Techniques
17.
Rev. méd. Chile ; 124(4): 449-55, abr. 1996. ilus, tab
Article in Spanish | LILACS | ID: lil-173355

ABSTRACT

We studied tha presence of antineutrophil cytoplasmic antibodies in 16 patients with idiopathic ulcerative colitis, using an indirect immunofluorescence technique and specific ELISA for myeloperoxidase and proteinase 3. Twelve patients had an active disease and in ten, antineutrophil cytoplasmic antibodies were positive, with a predominantly perinuclear distribution and without specificity for myeloperoxidase or proteinase 3. These antiantineutrophil cytoplasmic antibodies could be serologic indicators of disease activity in patients with ulcerative colitis


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Colitis, Ulcerative/immunology , Neutrophils , Autoantibodies/isolation & purification , Enzyme-Linked Immunosorbent Assay , Antibodies, Antinuclear/isolation & purification , Epitopes/isolation & purification , Fluorescent Antibody Technique
18.
Rev. cuba. med ; 34(1): 22-9, ene.-abr. 1995. ilus
Article in Spanish | LILACS | ID: lil-158540

ABSTRACT

Se estudió la función linfocitaria mediante la activación de los linfocitos en cultivo por efecto de la fitohemaglutinina y las distintas poblaciones linfoides en sangre periférica. Se cuantificaron las inmunoglobulinas séricas y la IgA, IgG e IgM. Se determinaron los niveles de inmunocomplejos circulantes en 22 pacientes con enfermedad de Crohn y 23 con colitis ulcerativa, de ambos sexos, con diagnóstico clínico, endoscópico, radiológico e histológico.No se observaron alteraciones de la actividad linfocitaria en ninguno de los e grupos estudiados, hubo disminució de las subpoblaciones T3 (CD3) y T4 (CD4) en ambos grupos, la cual resultó significativa para el grupo con colitis ulcerativa. La IgA y la IgM tendieron a estar elevadas, así como los inmunocomplejos circulantes


Subject(s)
Colitis, Ulcerative/immunology , Crohn Disease/immunology
20.
Arq. gastroenterol ; 23(2): 99-103, abr.-jun. 1986.
Article in English | LILACS | ID: lil-38372

ABSTRACT

Este artigo de atualizaçäo discute a importância de algumas moléstias gastrointestinais, como a retocolite ulcerativa, a doença celíaca e algumas diarréias, em iniciar uma resposta auto-imune. Säo discutidas as correlaçöes com patologias auto-imunes extra-digestivas bem conhecidas, tais como artrite reumatóide, tireoidite de Hashimoto, espondilite anquilosante, etc. O reconhecimento dessas observaçöes deverá estimular a pesquisa das manifestaçöes extra-digestivas das doenças auto-imunes gastrointestinais, permitindo uma melhor compreensäo dos fenômenos imunológicos envolvidos


Subject(s)
Autoimmune Diseases , Celiac Disease/immunology , Colitis, Ulcerative/immunology , Antigen-Antibody Complex/immunology
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