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1.
Rev. méd. Chile ; 139(5): 587-591, mayo 2011. tab
Article in Spanish | LILACS | ID: lil-603094

ABSTRACT

Background: Celiac disease (CD) is predominant in women and young people. Atypical, non-enteric symptoms are more common among adults. There is also an association between CD and neurological disorders, especially with cerebellar ataxia, polyneuropathy and epilepsy. Aim: To study the frequency of CD in a group of adults with cryptogenic epilepsy. Material and Methods: Twenty one patients with cryptogenic epilepsy, aged 20 to 65years (14 women) were studied, measuring IgA-anti transglutaminase antibodies and deamidated gliadin peptide (DGP) IgG and IgA antibodies. Results: One patient had elevated titers of both types of antibodies. Small bowel biopsy showed villous atrophy and lymphocytic infiltration compatible with CD. Conclusions: One of 21 adult patients with cryptogenic epilepsy had a silent CD.


Subject(s)
Adolescent , Adult , Aged , Female , Humans , Male , Middle Aged , Young Adult , Antibodies, Anti-Idiotypic/blood , Celiac Disease/diagnosis , Epilepsy/complications , Gliadin/immunology , Transglutaminases/immunology , Celiac Disease/complications , Celiac Disease/immunology , Gliadin/blood , Immunoglobulin A/blood , Immunoglobulin A/immunology , Immunoglobulin G/blood , Immunoglobulin G/immunology , Transglutaminases/blood
2.
Rev. cuba. hematol. inmunol. hemoter ; 26(2): 28-32, Mayo-ago. 2010.
Article in Spanish | LILACS | ID: lil-584693

ABSTRACT

La enfermedad celíaca es una enfermedad autoinmune que cursa con procesos inflamatorios en la mucosa del intestino delgado. Se produce por la ingesta de una fracción proteica del gluten de la dieta en individuos genéticamente predispuestos. Tiene diferentes formas de presentación que van desde la sintomática, típica o atípica, hasta la silente. La detección de autoanticuerpos con diversas especificidades debe ser considerada como indispensable en todos aquellos enfermos donde predominan síntomas digestivos y afectaciones nutricionales, aunque no deben descartarse otras sintomatologías atípicas como son el retraso en el crecimiento y desarrollo. En nuestro trabajo se estudió la presencia de anticuerpos antigliadina y antitransglutaminasa en el suero de 110 enfermos con clínica sugestiva de enfermedad celíaca, y se detectaron anticuerpos en 23 enfermos: 11 con antigliadina, antitransglutaminasa y biopsia positiva; 6 con antigliadina positiva, antitransglutaminasa negativa y biopsia positiva y 6 con antigliadina positiva, antitransglutaminasa negativa y biopsia negativa.


Celiac disease is an autoimmune entity with inflammatory processes in small intestine. It is caused by ingesta of gluten protein fraction in the diet of subjects with genetic predisposition subjects and has different ways of presentation including the symptomatic, typical or atypical and silent type. The detection of autoantibodies with diverse specificities must to be considered as essential in all those patients where there is predominance of digestive symptoms and nutritional affections without to rule out other atypical symptomatologies including the growth and development retard. The objective of present paper was to study the presence of anti-gliadin and anti-transglutaminase in serum of 110 patients presenting with celiac disease and it was possible to detect antibodies in 23 patients: 11 with anti-gliadin and anti-transglutaminase and a positive biopsy; 6 with positive anti-gliadin, negative anti-transglutaminase and a positive biopsy, negative anti-transglutaminase and also a negative biopsy.


Subject(s)
Humans , Male , Female , Celiac Disease/immunology , Gliadin/blood , Glutaminase/blood , Antibodies , Case-Control Studies
3.
Acta bioquím. clín. latinoam ; 44(1): 47-52, ene.-mar. 2010. tab
Article in Spanish | LILACS | ID: lil-633108

ABSTRACT

El objetivo de este trabajo fue evaluar la exactitud diagnóstica de un ELISA para anticuerpos antipéptidos de gliadina deamidados en pacientes con sospecha clínica de enfermedad celíaca (EC) y comparar su rendimiento con anticuerpos antiendomisio (EMA) y antitransglutaminasa tisular (a-Tgt). Se estudiaron 169 pacientes consecutivos (16 a 79 años), sometidos recientemente a biopsia duodenal, a los cuales se les determinó anticuerpos IgA EMA, IgA a-Tgt e IgG/IgA antipéptidos de gliadina deamidados (a-DGP Screen). Sesenta y cinco pacientes tuvieron algún grado de atrofia vellositaria y probable diagnóstico de EC (11 con atrofia vellositaria parcial, 30 subtotal y 24 total) y 104 con estructura vellositaria conservada. La sensibilidad, especificidad y exactitud diagnóstica de a-DGP Screen fue de 86,2%, 98,1% y 93,5% respectivamente, similar a EMA y a-Tgt. Al considerar sólo pacientes con atrofia vellositaria subtotal y total la sensibilidad fue estadísticamente superior en los 3 ensayos (100% para a-DGP Screen, p<0,014). Se observó una excelente concordancia entre a-DGP Screen con EMA (k= 0,99) y con a-Tgt (k = 0,97). El equipo a-DGP Screen demostró una elevada exactitud diagnóstica; su rendimiento fue equivalente a EMA y a-Tgt.


The aim of this study was to evaluate the diagnostic accuracy of an ELISA for antibodies to deamidated gliadin peptides in patients clinically suspected of having celiac disease (CD), and to compare this with antibodies to endomysium (EMA) and tissue transglutaminase (a-Tgt). One hundred and sixty-nine consecutive patients (16 to 79 yo) that had recently underwent small-bowel biopsy were included; serum samples were obtained for the measurement of IgA EMA, IgA a-Tgt and IgG/IgA antideamidated gliadin peptides (a-DGP Screen) antibodies. Sixty-five patients had some degree of villous atrophy with probable diagnostic of CD (11 partial, 30 subtotal and 24 total villous atrophy); 104 individuals had normal villous architecture. The sensitivity, specificity, and accuracy of a-DGP Screen were 86.2%, 98.1% and 93.5% respectively, similar to EMA or a-Tgt. When only patients with subtotal and total villous atrophy were considered, the sensitivity was statistically higher for the 3 tests (100% for a-DGP Screen, p<0.014). An excellent agreement was observed among a-DGP Screen with EMA (κ= 0,99) and with a-Tgt (κ = 0,97). The a-DGP Screen assay showed a high diagnostic accuracy with a performance equivalent to EMA or a-Tgt.


Subject(s)
Humans , Male , Female , Adolescent , Adult , Middle Aged , Aged , Immunoglobulin G/blood , Enzyme-Linked Immunosorbent Assay/methods , Celiac Disease/diagnosis , Quality Control , Immunoglobulin A/blood , Gliadin/blood
4.
J. pediatr. (Rio J.) ; 82(3): 210-214, May-June 2006.
Article in Portuguese | LILACS | ID: lil-431076

ABSTRACT

OBJETIVO: A associação de doença celíaca e diabetes melito já é conhecida há várias décadas. Pode ser encontrada em uma grande proporção de pacientes diabéticos, que geralmente são assintomáticos. O objetivo do estudo foi avaliar a soroprevalência da doença celíaca em crianças e adolescentes com diabetes melito tipo 1. MÉTODOS: Através de um estudo transversal, realizou-se triagem sorológica com anticorpo IgA antitransglutaminase humana em 354 crianças e adolescentes diabéticos, atendidos em ambulatórios de endocrinologia pediátrica de Recife, Pernambuco, no período de janeiro a junho de 2004. RESULTADOS: O antitransglutaminase humana foi positivo em 37/354 pacientes, resultando em soroprevalência de 10,5 por cento (IC95 por cento 7,6-14,2 por cento). Dentre os pacientes soropositivos, houve predomínio do sexo masculino (56,8 por cento) em relação ao feminino (43,2 por cento), porém sem significância estatística. O anticorpo antiendomísio foi realizado nos pacientes com antitransglutaminase humana positivo, sendo negativo em 14/37 (37,8 por cento) e positivo em 22/37 (59,5 por cento). CONCLUSÕES: A soroprevalência da doença celíaca em crianças e adolescentes diabéticos encontrada em Pernambuco é elevada, sendo comparável à observada em estudos da América do Norte e Europa e menor do que na Africa, sugerindo que a triagem sorológica para doença celíaca seja realizada em todas as crianças e adolescentes com diabetes melito tipo 1.


Subject(s)
Humans , Male , Female , Child , Adolescent , Autoantibodies/blood , Celiac Disease/epidemiology , Diabetes Mellitus/epidemiology , Autoantibodies/immunology , Biomarkers , Brazil/epidemiology , Cross-Sectional Studies , Celiac Disease/blood , Celiac Disease/immunology , Diabetes Mellitus/blood , Diabetes Mellitus/immunology , Gliadin/blood , Gliadin/immunology , Mass Screening , Prevalence , Seroepidemiologic Studies , Transglutaminases/blood , Transglutaminases/immunology
5.
Article in English | IMSEAR | ID: sea-63694

ABSTRACT

BACKGROUND: We prospectively evaluated the usefulness of IgA tissue transglutaminase antibodies (IgA tTG) in the initial diagnosis of celiac disease (CD) and compared its diagnostic potential with that of IgA anti-endomysial antibodies (IgA EMA) and anti-IgA and IgG gliadin antibodies (AGA and AGG, respectively). METHODS: Sera of 23 untreated children fulfilling the revised ESPGHAN criteria for diagnosis of CD (Group I; mean age 10.8 y); 19 disease controls (Group II; mean age 8.5 y) presenting with chronic diarrhea, short stature or both; and 22 healthy children (Group III; mean age 8.8 y) were studied. These were tested in a blinded manner for AGA, AGG, IgA tTG (guinea pig as antigen) and IgA EMA. RESULTS: In Group I, IgA EMA was positive in 19, IgA tTG in 17, AGA in 14 and AGG in 17 patients. In Group II, these tests were positive in 1, 0, 2 and 14 patients, respectively and in Group III, in 0, 0, 0 and 1 child, respectively. Analyzing data from Group I and II, IgA EMA, IgA tTG, AGA and AGG had sensitivity rates of 83%, 74%, 61% and 74%, respectively; the specificity rates were 95%, 100%, 89% and 26%; positive predictive values were 95%, 100%, 88% and 55% and negative predictive values were 82%, 74%, 65% and 45%, respectively. CONCLUSION: IgA tTG is useful for the diagnosis of CD, with sensitivity and specificity rates comparable to those of EMA and this test is well suited for use in tropical countries like India.


Subject(s)
Adolescent , Antibodies, Anti-Idiotypic/blood , Autoantibodies/blood , Case-Control Studies , Celiac Disease/immunology , Child , Child, Preschool , Duodenum/pathology , Female , Gliadin/blood , Humans , Immunoglobulin A/blood , Immunoglobulin G/blood , India , Male , Prospective Studies , Sensitivity and Specificity , Transglutaminases/blood
6.
Scientific Journal of Al-Azhar Medical Faculty [Girls] [The]. 2004; 25 (3): 421-434
in English | IMEMR | ID: emr-104915

ABSTRACT

To evaluate and compare the sensitivity and specificity of the serological marker human antitissue transglutarninase antibodies [IgA anti-tTG] with those of antiendomysium [EMA] and antigliadin antibodies [IgA and lgG AGA] for the diagnosis of celiac disease [CD]. The level of IgA antibodies to tTG in serum was determined by an enzyme-linked immunosorbent assay [ELISA] test using recombinant human tTG as the antigen; EMA, by indirect immunofluorescence; and IgA and IgG AGA, by ELISA. Twenty serum samples with untreated CD were studied and compared with serum samples from 58 children examined for failure to thrive, short stature and various digestive diseases as control group. Nineteen of 20 patients with CD had IgA anti-tTG, 20 of 20 patients had EMA, 16 of 20 had IgA AGA and 19 of 20 had lgG AGA. In control group without CD, 2 Of 58 had IgA AGA and 12 of 58 had lgG AGA, but none had IgA anti-tTG or EMA. The positive predictive value of IgA anti-tTG was 100% and the negative predictive value 98.3%. In comparison, results for EMA were 100% and 100%, IgA AGA 88.9% and93.3%and IgG AGA 61.3% and 97.9% respectively. The presence of human anti-tTG is a reliable indicator for the diagnosis of CD


Subject(s)
Humans , Male , Female , Biomarkers , Transglutaminases/blood , Enzyme-Linked Immunosorbent Assay/methods , Gliadin/blood , Immunoglobulin A , Sensitivity and Specificity
7.
Arq. gastroenterol ; 34(4): 254-61, out.-dez. 1997. tab, graf
Article in Portuguese | LILACS | ID: lil-209426

ABSTRACT

Analizaram-se os anticorpos séricos antigliadina IgA, pelo método ELISA, em 65 crianças distribuídas em três grupos: Grupo I com 20 indivíduos controles, Grupo II com 31 pacientes celíacos e Grupo III com 14 crianças com hipersensibilidade alimentar. Os celíacos foram estudados em diferentes períodos de taratmento; P1, antes da dieta isenta de glúten; P2, sexto mês de tratamento; P3, um a três anos de tratamento e P4, três anos e um mês a nove anos de tratamento. Nenhum paciente era portador de dificiência seletiva de IgA. Considerou-se positivo o título de anticorpos séricos antigliandina IgA > 30,3 UA, valor obtido dos controles. Nove dos 10 celíacos em P1 apresentaram títulos positivos. Nove destes 10 pacientes, realizaram segunda dosagem em P2; houve reduçäo dos títulos individuais com diferença significante entre a média dos títulos das duas dosagens, embora sete permanecessem positivos. Os celíacos em P3 e P4 nao apresentaram títulos positivos. Os títulos dos celíacos em P1 foram significantemente superiores àqueles dos pacientes dos outros períodos. No seguimento dos celíacos houve reduçäo dos títulos de anticorpos séricos antigliadina IgA aos valores dos controles após um ano de adesao à dieta sem glúten. No Grupo III um paciente apresentou título positivo e os títulos deste grupo foram significantemente menores quando comparados com aqueles do Grupo II, em P1 e P2 e näo houve diferença em relaçäo aos títulos dos celíacos em P3 e P4. A sensibilidade do método ELISA foi de 90 por cento e a especificidade de 93 por cento. A dosagem de anticorpos séricos antigliadina IgA foi útil do diagnóstico diferencial entre doença celíaca e hipersensibilidade alimentar e no acompanhamento dos pacientes celíacos em relaçäo à adesäo à dieta sem glúten.


Subject(s)
Child , Child, Preschool , Female , Humans , Autoantibodies/blood , Celiac Disease/diagnosis , Food Hypersensitivity/diagnosis , Gliadin/blood , Immunoglobulin A/blood , Celiac Disease/blood , Celiac Disease/immunology , Diagnosis, Differential , Enzyme-Linked Immunosorbent Assay , Follow-Up Studies , Gliadin/immunology , Immunoglobulin A/immunology , Sensitivity and Specificity
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