Taeniasis
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Reports by P.S. Sahu and co-researchers describe recent advances in neurocysticercosis
2009 JUN 9 - (NewsRx.com) -- According to recent research from India, "Diagnosis of neurocysticercosis (NCC) is complicated because of the variability in clinical presentations and course of the disease where viability of parasite is a major determinant. The present study describes evaluation of ELISAs using Taenia solium metacestode somatic and excretory-secretary (ES) antigens for detection of anti-T. solium metacestode IgG antibodies in serum and cerebrospinal fluid (CSF)." "And results of the ELISAs in cases with a definitive diagnosis of NCC are correlated with the biological stages of the parasite such as live vesicular or degenerated stage. The sensitivity of the IgG-ELISA using ES antigen is observed to be much higher in serum (88.2%) than in CSF (64.28%) although it is only marginally higher in serum (76.4%) than in CSF (75%) when somatic antigen is used in the ELISA. Whereas, the specificities of the ELISA using either somatic or ES antigen for detection of IgG antibodies in serum (97.97%; 96.96%) and CSF (96.42%; 97.61%) are comparable. A strong association is observed between live stage of the parasite and detection of antibodies in sera and CSF from more number of NCC patients by ELISA using ES antigens. Similarly, detection of antibodies by ELISA using somatic antigens could be associated with the dead or degenerated stage of the parasite in brain. The IgG-ELISA strategy developed in the present study opens up an avenue for diagnosis of NCC in hospitals or in population prevalence studies," wrote P.S. Sahu and colleagues. The researchers concluded: "The use of crude extracts of ES proteins might improve the serodiagnosis of the cases of NCC carrying live vesicular stage of the parasite larvae." Sahu and colleagues published their study in Acta Tropica (Evaluation of an IgG-ELISA strategy using Taenia solium metacestode somatic and excretory-secretary antigens for diagnosis of neurocysticercosis revealing biological stage of the larvae. Acta Tropica, 2009;110(1):38-45). For additional information, contact P.S. Sahu, Alluri Sitarama Raju Academy Med Science, Dept. of Microbiology, Eluru 534005, Andhra Pradesh, India. Publisher contact information for the journal Acta Tropica is: Elsevier Science BV, PO Box 211, 1000 AE Amsterdam, Netherlands. Keywords: India, Cysticercosis, Neurocysticercosis, Taeniasis. This article was prepared by Life Science Weekly editors from staff and other reports. Copyright 2009, Life Science Weekly via NewsRx.com.
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