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  • Title: Neurocysticercosis in clinically suspected and MRI proven cases: evidence of sub-optimal antibody response.
    Author: Kishore J, Mukhopadhyay C, Pradhan S, Ayyagari A, Gupta RK.
    Journal: Indian J Pathol Microbiol; 2004 Apr; 47(2):290-4. PubMed ID: 16295505.
    Abstract:
    Neurocysticercosis (NCC) has a worldwide distribution mainly in the developing countries like India. The study was done to find the seroprevalence of anti-cysticercus antibodies in clinically suspected and MRI proven cases and to corroborate the serological findings with radiological findings (MRI). A hospital based study among 204 suspected patients during January, 1996 to August, 2001 showed that 77 (32.2%, M:F = 2.2:1) had serological evidence of NCC. Of the total 189 sera, tested at 1:100 dilution 68 (35.9%) and of the total 50 CSF, tested at 1:5 dilution 9 (18%) were positive for anti-cysticercus IgG antibodies. In 35 cases where both were tested 13 sera (37.1%), 9 CSF (25.7%) and in 7 (20%) both sera and CSF were positive. In CSF from 62 patients with tubercular meningitis (disease control) 2 (3.2%) samples whereas in sera of 60 normal blood donors (normal control) 7 (11.7%) samples had anti-cysticercus IgG antibodies. In 33 MRI-positive cases, anti-cysticercus antibodies were seen in 15 (45.4%) patients. Antibodies were seen in 6 of 14 (42.8%) cases with single cortical cyst, 4 of 11 (36.3%) with 2-3 cysts and in 5 of 8 (62.5%) with multiple cysts. Alternatively, 18 of 33 (54.5%) MRI positive cases lacked anti-cysticercus antibodies. Six MRI negative cases were found to be seropositive and were treated successfully. Hence, immune response was sub-optimal even in MRI positive cases and conversely, few MRI negative cases were seropositive. Since positive response with MRI or serology depends on the stage of the disease, therefore both tests should be done together to confirm or to rule out NCC.
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