Korean J Parasitol.
1986 Dec;24(2):159-170. 10.3347/kjp.1986.24.2.159.
Serologic follow-up study in neurocysticercosis patients by ELISA after praziquantel treatment
- Affiliations
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- 1Department of Parasitology, College of Medicine, Chung-Ang University, Seoul 151, Korea.
- KMID: 1714992
- DOI: http://doi.org/10.3347/kjp.1986.24.2.159
Abstract
- /A total of 69 patients of confirmed neurocysticercosis was followed serologically by ELISA up to 22 months after praziquantel treatment. The intervals and numbers of follow-up were variable by patients. Serially collected samples of serum and CSF were examined simultaneously for their specific IgG antibody levels by ELISA, using cystic fluid, saline extracts of bladder wall and scolex as antigen. Within 4 months after praziquantel treatment, the antibody levels were elevated temporarily in both serum and CSF in most patients. In some cases antibody levels exhibited steady declining tendency after the treatment. Concomitant administration of dexamethasone appeared to suppress the elevation of antibody levels. The rate of mean absorbance of antibody changed more in serum than in CSF. The rate of elevation was greater in antibodies to parenchymal antigens than that to cystic fluid, but absolute difference of antibody levels was greater in anitbody to cystic fluid. Previously negative samples for IgG antibody may become positive after praziquantel treatment, which could be used as a complementary tool(provocation test) in serodiagnosis. One month was considered to be sufficient interval for the follow-up test for that purpose. In the follow-up of up to 22 months, only few cases of chronic neurocysticercosis showed declining tendency of IgG antibody levels below negative range. During acute encephalitic attacks in chronic patients, IgG antibody to parenchymal antigen were elevated in CSF temporarily. These results indicated that serologic follow-up of every year was recommendable to differentiate the cured patients from chronic patients with slowly calcifying lesions.
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