Evaluation of frequency of autoimmune hepatitis autoantibodies in children with type 1 diabetes / Frecuencia de anticuerpos de hepatitis autoinmune en niños con diabetes tipo I

Background: Diabetes mellitus type 1 (T1DM) is one of the childhood diseases with growing prevalence. Various accompanying autoimmune diseases were seen with type 1 diabetes. The most common autoimmune diseases with T1DM are autoimmune thyroiditis and celiac disease. In some reports, autoimmune hepatitis has been reported in association with DM-1. Objectives: The aim of this study was to evaluate autoimmune hepatitis autoantibodies in children with T1DM. Materials and methods: In this crosssectional study, 202 children with T1DM were evaluated (47.5% were males and 52.5% were girls). Liver enzymes, autoimmune hepatitis related autoantibodies such as anti-nuclear antibodies (ANA), anti-smooth muscle (ASMA) and anti liver and kidney microsomal antibodies (LKM-1) were measured. Liver ultrasound was done for participants and biopsy of liver was taken for children with increased echogenicity of the liver, hepatomegaly or elevated liver enzymes. Results analyzed by statistical software spss-16, Descriptive statistics and chi-square test, paired T-TEST. Level of less than 5% was considered statistically significant. Results: In 6 patients ANA and in 4 patients (2%) ASMA was positive,1 patient was ASMA positive but ANA negative. None of the patients were Anti LKM-1 positive. 3 patients had positive ANA and ASMA, and increased liver echogenicity on ultrasound simultaneously. Histological evaluation was showed that 2 patients had findings in favor of autoimmune hepatitis. Conclusion: Auto antibodies were positive in 10 cases. ANA was positive in 6 (2.97%) of all cases. ASMA was positive in 4 (1.98%) cases. Increased echogenicity was found in 3 cases. Histological evaluation showed 2 patients had biopsy confirmed autoimmune hepatitis. AIH-2 was not seen among our cases.

Antecedentes: La diabetes mellitus tipo 1 (DM1) es una de las enfermedades infantiles con mayor prevalencia. Se observaron varias enfermedades autoinmunes acompañantes con diabetes tipo 1. Las enfermedades autoinmunes más comunes con DM1 son la tiroiditis autoinmune y la enfermedad celíaca. En algunos reportes, se ha encontrado hepatitis autoinmune en asociación con DM-1. Objetivos: El objetivo de este estudio fue evaluar los autoanticuerpos de hepatitis autoinmunes en niños con DM1. Materiales y métodos: En este estudio transversal, se evaluaron 202 niños con DM1 (47,5% eran hombres y 52,5% eran niñas). Se midieron las enzimas hepáticas, los autoanticuerpos autoinmunes relacionados con la hepatitis, como los anticuerpos antinucleares (ANA), el músculo liso (ASMA) y los anticuerpos microsomales hepáticos y renales (LKM-1). Se realizó una ecografía hepática para los participantes y se tomó una biopsia del hígado para niños con mayor ecogenicidad del hígado, hepatomegalia o enzimas hepáticas elevadas. Los resultados fueron analizados por el software estadístico spss-16 usando estadística descriptiva y prueba de chi-cuadrado, T-TEST pareado. Se consideró estadísticamente significativo un nivel menor del 5%. Resultados: En 6 pacientes con ANA y en 4 pacientes (2%) ASMA fue positiva, 1 paciente fue ASMA positiva pero ANA negativa. Ninguno de los pacientes fue anti LKM-1 positivo. 3 pacientes tuvieron ANA y ASMA positivas, y aumentaron la ecogenicidad hepática en la ecografía simultáneamente. La evaluación histológica mostró que 2 pacientes tenían hallazgos a favor de la hepatitis autoinmune. Conclusión: Los autoanticuerpos fueron positivos en 10 casos. ANA fue positivo en 6 (2,97%) de todos los casos. La ASMA fue positiva en 4 (1,98%) casos. Se encontró mayor ecogenicidad en 3 casos. La evaluación histológica mostró que 2 pacientes tenían biopsia confirmada de hepatitis autoinmune. AIH-2 no fue visto entre nuestros casos.

Inflammatory Responses in the Muscle Coat of Stomach and Small Bowel in the Postoperative Ileus Model of Guinea Pig

PURPOSE: Small intestinal function returns first after surgery, and then the function of the stomach returns to normal after postoperative ileus (POI). The aim of this study was to investigate inflammatory responses in the muscle coat of stomach and small intestine in guinea pig POI model. MATERIALS AND METHODS: The distance of charcoal migration from pylorus to the distal intestine was measured. Hematoxylin and eosin (H&E) and immunohistochemical stain for calprotectin were done from the histologic sections of stomach, jejunum and ileum obtained at 3 and 6 hour after operation. Data were compared between sham operation and POI groups. RESULTS: The distance of charcoal migration was significantly reduced in the 3 and 6 hour POI groups compared with sham operated groups (p<0.05). On H&E staining, the degree of inflammation was significantly higher in the stomach of 3 hour POI groups compared with jejunum and ileum of POI groups or sham operated groups (p<0.05). Calprotectin positive cells were significantly increased in the muscle coat of stomach of 3 hour POI groups compared with jejunum and ileum of POI groups or sham operated groups (p<0.05). There was strong association between the degree of inflammation and calprotectin positive cells in stomach. CONCLUSION: Postoperative ileus induced by cecal manipulation significantly increased the degree of inflammation and calprotectin positive cells in the muscle coat of stomach as a remote organ. The relevance of degree of inflammation and the recovery time of ileus should be pursued in the future research.

Smooth muscle antibodies and cryoglobulinemia are associated with advanced liver fibrosis in Brazilian hepatitis C virus carriers

Cryoglobulinemia and non-organ-specific-autoantibody are biomarkers of autoimmunity of the chronic infection caused by hepatitis C virus (HCV). In this work, we report the association between the presence of smooth muscle antibodies (SMA) and cryoglobulinemia and chronic liver disease in HCV carriers. Sixty-five untreated HCV patients, 38 women and 27 men were included in this study. Cryoglobulinemia was tested by cryoprecipitation, SMA by indirect fluorescent antibody test, and liver fibrosis and hepatocellular inflammation activity was investigated by histology of liver biopsy using the METAVIR score. The prevalence of SMA in the patients was 33.8 percent and cryoglobulinemia was demonstrated in 36.9 percent patients. Cryoglobulinemia and SMA seropositivity was associated with advanced fibrosis (p < 0.05). The presence of SMA and cryoglobulinemia was not associated with hepatocellular inflammation activity, age, carrier gender or HCV genotype. We concluded that liver biopsy should be recommended for HCV carriers that are seropositive for SMA or cryoglobulinemia.

Diagnostic application of smooth muscle antibodies in autoimmune hepatitis

To measure the level of C-reactive protein and find its association with the glycaemic status [fasting plasma glucose, glycosylated haemoglobin] of metabolically normal and diabetic albino rats. Total 60 Albino rats were included [normal n=30; diabetic n=30]. Plasma glucose levels were determined by using glucose oxidase method while determination of total Hb and glycosylated hemoglobin [HbA[1]c] was done by diagnostic kit that uses weak cation-exchange resin to bind Hb. The% HbA[1]c was determined by measuring the absorbance at 415 nm of the glycosylated hemoglobin fraction and the total hemoglobin fraction. The ratio of the two absorbances gave the% of HbA[1]c. C-reactive protein was measured by the ELISA kit. Significant difference was found in the values of fasting glucose, of the normal and diabetic groups [p<0.05] but no significant difference was present in the values of HbA[1]c of both groups. There was no significant difference in the values of C-reactive protein of the normal and diabetic groups. Short duration hyperglycemia has no role in producing inflammation and raising the levels of bioinflammatory marker C-reactive protein

Significance of smooth muscle/anti-actin autoantibodies in celiac disease / Significado de los anticuerpos anti-músculo liso/anti-actina en la enfermedad celíaca

BACKGROUND/AIM: Smooth muscle antibody (SMA) specific for the protein actin, a major component of the cytoskeleton of epithelial cells, is one of the most prevalent non-organ specific autoantibodies in the serum of celiac disease (CD) patients. Our aim was to explore the clinical relevance of the presence of IgA type anti-actin antibody (AAA) and SMA in a series of patients with CD. METHODS: We evaluated frozen serum samples collected at diagnosis from 92 adult patients with CD and 52 control individuals in whom CD was excluded. Patients were re-evaluated a median time of 5 yr after treatment. IgA type AAA was detected using a modified commercial ELISA assay and IgA SMA was detected using indirect immunofluorescence on primate esophagus substrate. RESULTS: At diagnosis, samples from CD patients had significantly higher AAA values than controls (p<0.00001). While all active CD patients had serum AAA values over the cut-off for healthy controls, we observed a very significant reduction of these antibodies after treatment (p>0.0001). AAA had a highly significant correlation with both, tissue, transglutaminase (r=0.62) and antigliadin (r=0.60, p<0.00001) antibodies as well as the severity of the intestinal injury (p<0.05). SMA was detected in sera of 35 consecutive CD patients. At diagnosis, SMA positive patients had significantly higher values of AAA (p<0.0002), increased number of autoimmune disorders (p<0.04), delayed menarche (p<0.04), lower hemoglobin levels (p<0.01), increased fecal a-I antitrypsin clearance (p<0.01) and more severe diarrhea (p<0.06). We also detected a trend to more severe complications at follow-up (p=0.059). CONCLUSIONS: Based on our findings we suggest that the presence of increased IgA AAA serum levels is a highly sensitive marker of the disturbed architecture of intestinal epithelial cells of CD patients with a potential relevance to diagnosis and follow-up. The presence of SMA seems to define a distinct subset of CD patients with ...

Introduccion/objetivo: El anticuerpo anti-musculo liso (SMA) dirigido contra la proteína actina, un componente mayor del citoesqueleto de las células epiteliales, es el anticuerpo no-órgano específico más prevalente en enfermedad celíaca (EC). Nuestro objetivo fue explorar la importancia clínica de los anticuerpos anti-actina (AAA) y SMA en una serie de pacientes con EC. Métodos: Evaluamos 92 muestras serológicas de pacientes celíacos adultos recolectadas al momento del diagnóstico y la de 52 individuos controles no celíacos. Los pacientes fueron re-evaluados luego de un tiempo medio de 5 años en tratamiento. Evaluamos AAA tipoIgA mediante ELISA empleando un equipo commercial modificado y SMA IgA por inmunofluorescencia indirecta sobre sustrato de esófago de mono. Resultados: Al momento del diagnóstico, los pacientes celíacos tuvieron valores de AAA significativamente más elevados que los controles (p<0.00001). Todos los pacientes con EC activa presentaron niveles de AAA por encima del valor de corte determinado para el grupo control sano y se evidenció una reducción significativa de los nivelesluego del tratamiento (p>0.0001). Los AAA presentaron una correlación significativa con los anticuerpos anti-transglutaminasa tisular (r=0.62) y anti-gliadina (r=0.60) (p<0.00001), de igual modo que con la severidad del daño intestinal (p<0.05). Al momento del diagnóstico, se detectó SMA en el suero de 35 pacientes no controles. Los pacientes SMA positivos tuvieron valores significativamente mayores de AAA (p<0.002), un incremento del número de enfermedades autoinmunes asociadas (p<0.04), menarca tardía (p<0.04), niveles bajos de hemoglobina (p<0.01), incremento del clearance de a-1 antitripsina fecal (p<0.01) y mayor severidad de la diarrea (p<0.06).En ellos se evidenció una tendencia al desarrollo de complicaciones más severas durante el seguimiento (p=0.059). Conclusiones: Sugerimos que la presencia de un valor sérico aumentado de AAA tipo IgA...

A Prospective Study on the Prevalence and Clinical Significance of Autoantibodies in Patients with Suspected Nonalcholic Fatty Liver Disease / 대한간학회지

BACKGROUND/AIMS: Exclusion of liver disease from other causes such as autoimmune hepatitis is necessary for diagnosis of nonalcoholic fatty liver disease (NAFLD). However, there has been no study on the prevalence and significance of autoantibodies in the patients with clinically suspected NAFLD in Korea, where hepatitis B is endemic and autoimmune hepatitis is relatively uncommon. METHODS: We prospectively tested for anti-nuclear antibody (ANA), anti-smooth muscle antibody (ASMA), and anti-mitochondrial antibody (AMA) in 135 serially enrolled patients with suspected NAFLD. We compared the clinical characteristics and biochemical indices of the ANA-positive or ASMA-positive group with those of the autoantibody-negative group. RESULTS: Sixteen patients (11.8%) had serum autoantibodies; there was ANA in 8 patients (5.9%), ASMA in 7 (5.1%), and AMA in 2 (1.5%). Both ANA and AMA were positive in one patient. The ANA-positive or ASMA-positive group showed an older age (49.5+/-13.0 vs. 42.0+/-10.9 years, respectively, P=0.018) and higher levels of serum globulin (3.1+/-0.4 vs. 2.9+/-0.4 g/dL, respectively, P=0.037), compared with the autoantibody-negative group. Two cases with positive ANA or ASMA fulfilled the diagnostic criteria for probable autoimmune hepatitis and two cases with positive AMA were suspected as primary biliary cirrhosis. CONCLUSIONS: These findings suggest that autoantibodies could be found in some patients with suspected NAFLD in Korea, AMA-positivity or ASMA-positivity could be associated with old age and high serum globulin, and some of the autoantibody-positive cases could be diagnosed as autoimmune hepatitis or primary biliary cirrhosis. Further studies are necessary to clarify the clinical significance of autoantibody positivity in those patients.

Anticuerpos antimúsculo liso en la detección y seguimiento del enfermo celíaco / Smooth muscle antibodies in the detection and follow-up of the patient with celiac disease

Se estudiaron 40 pacientes, 36 niños y 4 adultos; 29 mujeres y 11 varones, desde setiembre de 1984 a abril de 1986, subdividos en tres grupos. Grupo I: Enfermos celiácos confirmados con tres biopsias. Grupo Ia: con determinaciones antes y después del desafio. Grupo Ib: con determinaciones al cabo del mismo. Grupo II: Presuntos enfermos celíacos que cuentan con la primera biopsia. Grupo IIa: de reciente diagnóstico. Grupo IIb: transgresores a la dieta. Grupo Ic: no transgresores a la dieta. Grupo III: Familiares de pacientes celícos. Se determinaron en todos los pacientes anticuerpos antimúsculo liso (Ac ASMA) y otros autoanticuerpos por inmunogluorescencia indirecta. En los resultados se destaca: En el Grupo la: 7/7 pacientes con ASMA negativos concidentes con la biopsia normal. En el mismo grupo, en 7/7 se positivizó el ASMA al cabo del enfrentamiento. En el Grupo Ib: 4/6 pacientes fueron positivos al cabo del desafío. En el Grupo IIa: 4/4 pacientes fueron ASMA positivos en el momento del diagnóstico. En el Grupo IIb: 4/5 pacientes fueron AC ASMA negativos. En el Grupo III: en 6 casos de AC ASMA positivos se confirmó lesióm intestinal. Concluimos en que el anticuerpo antimúsculo liso es un nuevo marcador para la pesquisa y el seguimiento de la enfermedad celíca

Anticorpos anti-músculo liso em uma populaçäo hospitalar / Anti-smooth muscle antibodies in hospitalar population

Foram estudados 139 soros, provenientes de uma populaçäo hospitalar, que haviam sido submetidos à pesquisa de auto-anticorpos. Entre estes, 60 pacientes eram portadores de hepatopatia, onde 19 casos eram hepatite viral aguda, três cirrose hepática, oito esquistossomose hepato-intestinal, 26 hepatite crônica ativa e nove casos diversos. Nos 60 casos de hepatopatias estudados, 26 apresentavam AML, 15 AML-V, 9 AML-T e 10 AML-G. Nove pacientes que apresentavam AML-G eram portadores de hepatite crônica ativa e um apresentava cirrose. Os demais padröes foram encontrados em diferentes patologias. Altos títulos de anticorpos foram geralmente encontrados em doenças hepáticas crônicas

Enfermedad celíaca y anticuerpos antimúsculo liso / Celiac disease and smooth muscle antibodies

Se estudió la presencia de anticuerpos antirreticulina (Ac ARA) y antimúsculo liso (Ac ASMA) en 9 niños celíacos (7 mujeres y 2 varones) con un rango de edad de 2 años y 2 meses a 10 años y 4 meses. Todos contaban con una primera biopsia con atrofia vellositaria total o subtotal y habían recuperado la arquitectura normal de la misma antes del desafío. Se estudió, además, 1 paciente adulta de 28 años de edad con enfermedad de Dhüring, a la que se determinaron autoanticuerpos antes de iniciar el tratamiento y en el curso de éste. En este trabajo se destacan las manifestaciones clínicas observadas y los cambios en los autoanticuerpos antirreticulina (Ac ARA) y antimúsculo liso (Ac ASMA). En las observaciones clínicas, 5 de los 9 pacientes tuvieron manifestaciones (vómitos y/o cefaleas) en las primeras 48 horas que siguieron al desafío, las que luego desaparecieron. Al cabo de éste, 4 de estos niños presentaban irritabilidad y 3 cambios en el color y la consistencia de la materia fecal. En el orden inmunológico, al iniciar el desafío, 6 de los 9 pacientes (66%) tuvieron Ac ARA positivos; al finalizar aquél el 100% de los niños presentaron Ac ARA. Para los Ac ASMA la totalidad de los pacientes al comienzo del desafío eran negativos, positivizándose todos ellos (9 pacientes) al cabo de aquél. Los Ac ASMA pertenecían al tipo IgA. Consideramos que la determinación de Ac ASMA posee mucho valor en diagnóstico y seguimiento de la enfermedad celíaca