RESUMO
AIM: Early endoscopic recurrence is frequently observed in patients following resection for Crohn's disease (CD). However, factors affecting the incidence of an early postoperative endoscopic recurrence (EPER) have not been fully determined. The aim of this study was to evaluate risk factors for EPER after ileocolonic resection for CD. METHOD: This was a retrospective, international multicentre study, in which 127 patients with a first ileocolonoscopy conducted between 6 and 12 months after ileocolonic resection for CD were included. Endoscopic recurrence was defined as a Rutgeerts score of ≥ i2. The following variables were investigated as potential risk factors for EPER: gender, age at surgery, location and behaviour of CD, smoking, concomitant perianal lesions, preoperative use of steroids, immunomodulators and biologics, previous resection, blood transfusion, surgical procedure (open vs laparoscopic approach), length of resected bowel, type of anastomosis (side-to-side vs end-to-end), postoperative complications, granuloma and postoperative biological therapy. Variables related to the patient, disease and surgical procedure were investigated as potential risk factors for EPER, with univariate and multivariate (logistic regression) analyses. RESULTS: 43/127 (34%) patients had EPER at the time of the first postoperative ileocolonoscopy. In univariate analysis, only preoperative steroid use was significantly associated with a higher rate of EPER [21/45 patients (47%) on steroids and 22/82 patients (27%) without steroids (P = 0.04)]. In multivariate analysis, only preoperative steroid use was a significant independent risk factor for EPER (odds ratio 3.28, 95% confidence interval: 1.30-8.28; P = 0.01). CONCLUSIONS: This study found that only preoperative steroid use was a significant risk factor for EPER after ileocolonic resection for CD. Prospective studies are necessary to evaluate precisely the impact of perioperative medications on EPER rates.
Assuntos
Colectomia/efeitos adversos , Colonoscopia/estatística & dados numéricos , Doença de Crohn , Complicações Pós-Operatórias/epidemiologia , Esteroides/efeitos adversos , Adolescente , Adulto , Colectomia/métodos , Colo/cirurgia , Colonoscopia/métodos , Doença de Crohn/tratamento farmacológico , Doença de Crohn/patologia , Doença de Crohn/cirurgia , Feminino , Humanos , Íleo/cirurgia , Incidência , Modelos Logísticos , Masculino , Complicações Pós-Operatórias/etiologia , Período Pré-Operatório , Recidiva , Estudos Retrospectivos , Fatores de Risco , Adulto JovemRESUMO
BACKGROUND: Organ-specific autoimmune diseases may appear in patients with systemic lupus erythematosus (SLE). Gastrointestinal symptoms are well documented in SLE and may be similar to those related to autoimmune gastrointestinal diseases. OBJECTIVE: Our aim was to search for gastrointestinal organ-specific autoantibodies in 194 patients with systemic lupus and 103 healthy controls from Southern Brazil. Methods Anti-endomysium antibodies (IgA-EmA), anti-gastric parietal cells (GPC) antibodies, anti-smooth muscle antibodies (ASMA), anti-mitochondrial antibodies (AMA) and anti-LKM-1 (liver-kidney microsomal) were searched for using indirect immunofluorescence in the sera of patients and controls. RESULTS: The total positivity of antibodies in SLE patients was 14.4% (28/194) and differed significantly from healthy individuals (0.97%; p<0.001). IgA-EmA was more common in lupus patients than in controls (11/194; p=0.009), and one of these patients had dermatitis herpetiformis. Clinical association revealed that IgA-EmA was more common in SLE patients with discoid lesions. The frequency of anti-GPC (p=0.10), ASMA (p=0.16) and AMA (p=0.55) did not differ significantly between groups. No patient presented LKM-1 autoantibodies. One patient presenting anti-GPC was diagnosed with atrophic gastritis and pernicious anemia. CONCLUSION: Only IgA-EmA was significantly associated with lupus and with the presence of discoid lesions. Until now, no obvious association with celiac disease has been found.
Assuntos
Autoanticorpos/sangue , Doenças Autoimunes/imunologia , Gastroenteropatias/imunologia , Lúpus Eritematoso Sistêmico/imunologia , Adolescente , Adulto , Idoso , Feminino , Técnica Indireta de Fluorescência para Anticorpo , Humanos , Masculino , Pessoa de Meia-Idade , Músculo Liso/imunologia , Células Parietais Gástricas/imunologiaRESUMO
The alternative pathway of complement plays an important role in the pathogenesis of coeliac disease (CD), where factor B (BF) is central to its activation. CD is a gluten-sensitive enteropathy that results from a complex interplay between genetic, immunologic, and environmental factors. In this study we evaluated the association of BF allotypes with the susceptibility and severity of CD, and with the presence of autoantibodies. Seventy-six non-related patients (56 female; 20 male; 2-77 years) and 150 first-degree relatives (87 female, 63 male; 2-75 years) were investigated. As controls, 97 healthy individuals were included (67 female;, 30 male; 1-71 years). The BF allotypes were determined by high-voltage agarose gel electrophoresis, followed by specific immunofixation. Disease severity was evaluated by anti-endomisial antibody (IgA-EmA) titres and histological findings of intestinal mucosa, which showed a high correlation (r = 0.8; P < 0.00001) in samples collected simultaneously. IgA-EmA was detected in all CD patients ingesting gluten, and in 13.3% of the relatives. The IgA-EmA, smooth muscle, mitochondrial, liver-kidney microsomal, nuclear, gastric parietal cells, and thyroid microsome antibodies were tested by indirect immunofluorescence. A significant decrease in BF S (P = 0.026) and an increasing tendency in BF SF allotype (P = 0.06) were observed in CD patients when compared to their relatives. On the other hand, BF S frequency was increased (P = 0.001 RR = 2.32) and BF SF (P = 0.002) decreased in the relatives when compared to the controls. No differences were observed in the distribution of BF phenotypes amongst the CD patients and the control group, and no association was found with CD severity or with the presence of autoantibodies. These results suggest BF SF as a CD susceptibility marker, and BF S as a protection marker of the disease amongst CD families in the Brazilian population.
Assuntos
Doença Celíaca/genética , Fator B do Complemento/genética , Predisposição Genética para Doença/genética , Adolescente , Adulto , Idoso , Biomarcadores , Brasil , Doença Celíaca/imunologia , Doença Celíaca/patologia , Criança , Pré-Escolar , Fator B do Complemento/imunologia , Família , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Fenótipo , Índice de Gravidade de DoençaRESUMO
This study shows a broad analysis of gynaecological and obstetrical disturbances in patients with celiac disease in relation to their nutritional status and adherence to a gluten-free diet. Seventy-six adult celiac patients were analyzed according to nutritional status and 18 children/adolescents to gluten-free diet adherence. As controls, 84 adults and 22 adolescents with irritable bowel syndrome were used The significant findings were observed as follow: adult celiac patients, irrespective of the nutritional status, were younger than controls, presented delayed menarche, secondary amenorrhea, a higher percentage of spontaneous abortions, anemia and hypoalbuminemia. No differences were observed regarding the number of pregnancies, age at menopause and duration of the reproductive period. After treatment, patients presented with normal pregnancies and one patient presented spontaneous abortion. The adolescents who were not adherent to gluten-free diet presented delayed menarche and secondary amenorrhea. In conclusion, gluten per se could explain the disturbances and malnutrition would worsen the disease in a consequent vicious cycle. Therefore, celiac disease should be included in the screening of reproductive disorders.
Assuntos
Doença Celíaca/complicações , Doença Celíaca/dietoterapia , Complicações na Gravidez , Aborto Espontâneo/etiologia , Adolescente , Adulto , Idoso , Amenorreia/etiologia , Criança , Feminino , Glutens/administração & dosagem , Humanos , Síndrome do Intestino Irritável/complicações , Desnutrição/etiologia , Pessoa de Meia-Idade , Estado Nutricional , Cooperação do Paciente , Gravidez , Complicações na Gravidez/dietoterapia , PrevalênciaRESUMO
BACKGROUND: Literature data have shown high specificity of antiendomysial antibodies (EmA IgA) in celiac disease. The scarcity of Brazilian reports concerning this subject motivated the present study. OBJECTIVES: To determine the sensitivity and specificity of antiendomysial IgA antibodies in Brazilian celiac patients at diagnosis and after treatment, to confirm patient adherence to a gluten-free diet and to screen first-degree relatives. METHODS: An extensive clinical and serological study was performed by investigating the presence of these antibodies in 392 individuals from Southern Brazil. Indirect immunofluorescence using human umbilical cord as substrate was employed and the total levels of IgA were determined by turbidimetry in all groups. The study was conducted on 57 celiac patients (18 at diagnosis, 24 who adhered to a gluten-free diet and 15 with marked or slight transgression of the diet), 115 relatives of celiac patients (39 families), 94 patients with other gastrointestinal diseases, and 126 healthy individuals from the general population. RESULTS: The results demonstrated 100% positivity for the recently diagnosed patients and for those consuming gluten, in contrast to the patients who complied with the diet (0%). In the control group one individual was positive, but refused to undergo a biopsy. In the group of other gastrointestinal diseases, one positive patient presented ulcerative colitis, Down's syndrome and epilepsy, and the intestinal biopsy was diagnostic for celiac disease. These data showed 99.3% specificity for the test. Eighteen relatives were positive for antiendomysial antibodies IgA (15.65%), and comparison with the healthy population revealed a significant difference. An intestinal biopsy was obtained from seven subjects (one with total villous atrophy and six without alterations in the mucosal architecture, but all with a high number of intra-epithelial lymphocytes). CONCLUSIONS: The method revealed 100% sensitivity and 99.3% specificity. Because it is not an invasive method it can be used for the screening of atypical and latent forms of celiac disease to avoid serial biopsies and to control adherence to a gluten-free diet with implications in the prevention of malignancy in celiac disease.
Assuntos
Autoanticorpos/sangue , Doença Celíaca/imunologia , Imunoglobulina A/sangue , Adolescente , Adulto , Idoso , Estudos de Casos e Controles , Doença Celíaca/diagnóstico , Doença Celíaca/genética , Distribuição de Qui-Quadrado , Criança , Pré-Escolar , Intervalos de Confiança , Família , Feminino , Técnica Indireta de Fluorescência para Anticorpo , Predisposição Genética para Doença , Humanos , Lactente , Recém-Nascido , Masculino , Pessoa de Meia-Idade , Sensibilidade e EspecificidadeRESUMO
The coexistence of celiac disease together with a range of autoimmune disorders has already been reported. The aims of this study were to perform a broad spectrum of autoantibodies in celiac patients (N = 56), their first-degree relatives (N = 118), and compare the data with healthy controls (N = 101) and patients with inflammatory bowel disease (N = 42; Crohn's disease, N = 18 and ulcerative colitis, N = 24). All serum samples were tested by indirect immunofluorescence to the anti-endomysium antibodies (EmA), anti-neutrophil cytoplasmic (ANCA), anti-smooth-muscle (SMA), anti-mitochondrial (AMA), anti-nuclear (ANA), anti-liver-kidney microsomal (LKM), anti-gastric parietal cells (GPCA), and anti-thyroid microsome (TMA). EmA were detected in 100% of celiac patients ingesting gluten and in 16.1% of the first-degree relatives, while ANCA were positive only in patients with ulcerative colitis (45.6%) and Crohn's disease (16.5%). Fourteen CD patients (25%) were positive for at least one of the other autoantibodies, with significant prevalence of TMA, ANA, and GPCA, while the relatives showed 17.8% of positivity, with an increased prevalence of ANA and TMA. These results emphasize the value of screening for different autoantibodies in celiac patients and their relatives and corroborate the need for evaluation and follow-up of these individuals.
Assuntos
Autoanticorpos/sangue , Doença Celíaca/imunologia , Colite Ulcerativa/imunologia , Doença de Crohn/imunologia , Adolescente , Adulto , Idoso , Anticorpos Anticitoplasma de Neutrófilos/sangue , Criança , Pré-Escolar , Feminino , Técnica Indireta de Fluorescência para Anticorpo , Humanos , Masculino , Pessoa de Meia-IdadeRESUMO
Sensibility to gluten is a condition with high immunological reaction against gluten proteins from wheat, barley, rye and oats in individuals genetically susceptible. Celiac disease is its most frequent expression with various forms of clinical presentation. The treatment consists in gluten free diet. Although the biopsy of proximal small bowel is necessary, the importance of serological tests is increasing in the screening, diagnosis and monitoring of gluten free diet in celiac patients. The aim of this study was to investigate the presence of antiendomysium (EmA-IgA) and anti-reticulin (ARA-IgA) antibodies in 56 celiac patients (17 at diagnosis, 24 adherent to the diet and 15 with transgression to the diet). The antibodies were detected by indirect immunofluorescence, using human umbilical cord as substrate for the EmA-IgA and rat liver and kidney for the ARA-IgA. In the patients at diagnosis and in the group with transgression to the diet the total positivity was 100% for EmA-IgA and 59.4% for ARA-IgA. Antibodies were not detected in gluten-free diet patients. Among the 32 positive patients, the concordance of both tests was of 59.4% (19/32), being 40.6% (13/32) negative to ARA-IgA and positive to EmA-IgA. No patient was positive for ARA-IgA and negative for EmA-IgA. Thus, the sensitivity for EmA-IgA was of 100% and 59.4% for ARA-IgA. The association of the two tests did not improve the positivity in the samples. In conclusion, EmA-IgA can be considered the best serological test for diagnosis and follow up of celiac patients, because it presents high predictive value, high specificity and sensibility and is not expensive if using human umbilical cord as substrate.
Assuntos
Anticorpos/sangue , Doença Celíaca/dietoterapia , Doença Celíaca/imunologia , Gliadina/imunologia , Imunoglobulina A/sangue , Reticulina/imunologia , Adolescente , Adulto , Idoso , Animais , Doença Celíaca/diagnóstico , Criança , Pré-Escolar , Feminino , Técnica Indireta de Fluorescência para Anticorpo , Humanos , Masculino , Pessoa de Meia-Idade , Ratos , Sensibilidade e EspecificidadeRESUMO
In spite of the remarkable progress made in the last years, the perspectives in coeliac disease is still an enigma that has maintained this clinical entity a subject open to investigation. However, particular attention is deserved to the recent contributions related to the role of the histocompatibility antigens (HLA system), which is basically controlled by inherited transmission but can behave, in certain cases as gluten-sensitive "receptors" at the level of brush-border membrane. The coupling of these receptors with antigenic fractions of gluten in a sensitive person should be a starting point for a sequence of immunological events, with its several intestinal and general implications.