Evaluation of cysticercus-specific IgG (total and subclasses) and IgE antibody responses in cerebrospinal fluid samples from patients with neurocysticercosis showing intrathecal production of specific IgG antibodies Avaliação das respostas de anticorpos anti-cisticercos IgG (total e subclasses) e IgE em amostras de líquido cefalorraquidiano de pacientes com neurocisticercose apresentando produção intratecal de anticorpos específicos IgG

In the present study, an enzyme-linked immunosorbent assay (ELISA) standardized with vesicular fluid of Taenia solium cysticerci was used to screen for IgG (total and subclasses) and IgE antibodies in cerebrospinal fluid (CSF) samples from patients with neurocysticercosis showing intrathecal product...

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Published inArquivos de neuro-psiquiatria no. ahead
Main Authors Lisandra Akemi Suzuki, Cláudio Lúcio Rossi
Format Journal Article
LanguageEnglish
Published Academia Brasileira de Neurologia (ABNEURO) 01.01.2013
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Abstract In the present study, an enzyme-linked immunosorbent assay (ELISA) standardized with vesicular fluid of Taenia solium cysticerci was used to screen for IgG (total and subclasses) and IgE antibodies in cerebrospinal fluid (CSF) samples from patients with neurocysticercosis showing intrathecal production of specific IgG antibodies and patients with other neurological disorders. The following results were obtained: IgG-ELISA: 100% sensitivity (median of the ELISA absorbances (MEA)=1.17) and 100% specificity; IgG1-ELISA: 72.7% sensitivity (MEA=0.49) and 100% specificity; IgG2-ELISA: 81.8% sensitivity (MEA=0.46) and 100% specificity; IgG3-ELISA: 63.6% sensitivity (MEA=0.12) and 100% specificity; IgG4-ELISA: 90.9% sensitivity (MEA=0.85) and 100% specificity; IgE-ELISA 93.8% sensitivity (MEA=0.60) and 100% specificity. There were no significant differences between the sensitivities and specificities in the detection of IgG-ELISA and IgE-ELISA, although in CSF samples from patients with neurocysticercosis the MEA of the IgG-ELISA was significantly higher than that of the IgE-ELISA. The sensitivity and MEA values of the IgG4-ELISA were higher than the corresponding values for the other IgG subclasses. Future studies should address the contribution of IgG4 and IgE antibodies to the physiopathology of neurocysticercosis.No presente estudo, uma reação imunoenzimática (ELISA) padronizada com o fluido vesicular de cisticercos de Taenia solium foi utilizada para avaliar as respostas de anticorpos anti-cisticercos IgG (total e subclasses) e IgE em amostras de líquido cefalorraquidiano (LCR) de pacientes com neurocisticercose apresentando produção intratecal de anticorpos específicos IgG e pacientes com outras desordens neurológicas. Os seguintes resultados foram obtidos: ELISA-IgG: 100% de sensibilidade (mediana das absorbâncias das reações ELISA (MAE)=1,17) e especificidade 100%; ELISA-IgG1: sensibilidade 72,7% (MAE=0,49) e especificidade 100%; ELISA-IgG2: sensibilidade 81,8% (MAE=0,46) e especificidade 100%; ELISA-IgG3: sensibilidade 63,6% (MAE=0,12) e especificidade 100%; ELISA-IgG4: sensibilidade 90,9% (MAE=0,85) e especificidade 100%; ELISA-IgE: sensibilidade 93,8% (MAE=0,60) e especificidade 100%. Não foram encontradas diferenças significativas entre as sensibilidades e especificidades das reações ELISA-IgG e ELISA-IgE, embora a MAE da reação ELISA-IgG em amostras de LCR de pacientes com neurocisticercose tenha sido significativamente maior que a obtida com ELISA-IgE. Os valores de sensibilidade e MAE da reação ELISA-IgG4 foram maiores que os valores correspondentes para as outras subclasses da IgG. Estudos futuros deverão abordar a contribuição dos anticorpos IgG4 e IgE na fisiopatologia da neurocisticercose.
AbstractList In the present study, an enzyme-linked immunosorbent assay (ELISA) standardized with vesicular fluid of Taenia solium cysticerci was used to screen for IgG (total and subclasses) and IgE antibodies in cerebrospinal fluid (CSF) samples from patients with neurocysticercosis showing intrathecal production of specific IgG antibodies and patients with other neurological disorders. The following results were obtained: IgG-ELISA: 100% sensitivity (median of the ELISA absorbances (MEA)=1.17) and 100% specificity; IgG1-ELISA: 72.7% sensitivity (MEA=0.49) and 100% specificity; IgG2-ELISA: 81.8% sensitivity (MEA=0.46) and 100% specificity; IgG3-ELISA: 63.6% sensitivity (MEA=0.12) and 100% specificity; IgG4-ELISA: 90.9% sensitivity (MEA=0.85) and 100% specificity; IgE-ELISA 93.8% sensitivity (MEA=0.60) and 100% specificity. There were no significant differences between the sensitivities and specificities in the detection of IgG-ELISA and IgE-ELISA, although in CSF samples from patients with neurocysticercosis the MEA of the IgG-ELISA was significantly higher than that of the IgE-ELISA. The sensitivity and MEA values of the IgG4-ELISA were higher than the corresponding values for the other IgG subclasses. Future studies should address the contribution of IgG4 and IgE antibodies to the physiopathology of neurocysticercosis.No presente estudo, uma reação imunoenzimática (ELISA) padronizada com o fluido vesicular de cisticercos de Taenia solium foi utilizada para avaliar as respostas de anticorpos anti-cisticercos IgG (total e subclasses) e IgE em amostras de líquido cefalorraquidiano (LCR) de pacientes com neurocisticercose apresentando produção intratecal de anticorpos específicos IgG e pacientes com outras desordens neurológicas. Os seguintes resultados foram obtidos: ELISA-IgG: 100% de sensibilidade (mediana das absorbâncias das reações ELISA (MAE)=1,17) e especificidade 100%; ELISA-IgG1: sensibilidade 72,7% (MAE=0,49) e especificidade 100%; ELISA-IgG2: sensibilidade 81,8% (MAE=0,46) e especificidade 100%; ELISA-IgG3: sensibilidade 63,6% (MAE=0,12) e especificidade 100%; ELISA-IgG4: sensibilidade 90,9% (MAE=0,85) e especificidade 100%; ELISA-IgE: sensibilidade 93,8% (MAE=0,60) e especificidade 100%. Não foram encontradas diferenças significativas entre as sensibilidades e especificidades das reações ELISA-IgG e ELISA-IgE, embora a MAE da reação ELISA-IgG em amostras de LCR de pacientes com neurocisticercose tenha sido significativamente maior que a obtida com ELISA-IgE. Os valores de sensibilidade e MAE da reação ELISA-IgG4 foram maiores que os valores correspondentes para as outras subclasses da IgG. Estudos futuros deverão abordar a contribuição dos anticorpos IgG4 e IgE na fisiopatologia da neurocisticercose.
Author Cláudio Lúcio Rossi
Lisandra Akemi Suzuki
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SubjectTerms ensaio de imunoadsorção enzimática
enzyme-linked immunosorbent assay
IgE
IgG
neurocisticercose
neurocysticercosis
Title Evaluation of cysticercus-specific IgG (total and subclasses) and IgE antibody responses in cerebrospinal fluid samples from patients with neurocysticercosis showing intrathecal production of specific IgG antibodies Avaliação das respostas de anticorpos anti-cisticercos IgG (total e subclasses) e IgE em amostras de líquido cefalorraquidiano de pacientes com neurocisticercose apresentando produção intratecal de anticorpos específicos IgG
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