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  • Title: [Intrathecal synthesis of anti-Toxoplasma gondii antibodies during cerebral toxoplasmosis associated with African AIDS].
    Author: Makuwa M, Loemba H, Beuzit Y, Livrozet JM, Belec L.
    Journal: Bull Soc Pathol Exot; 1999 May; 92(2):95-8. PubMed ID: 10399597.
    Abstract:
    Thirty-four HIV-1-infected in-patients of the Hôpital Central des Forces Armées Congolaises, Brazzaville, Congo, hospitalized for suspected cerebral toxoplasmosis, have been evaluated for integrity of the blood-brain barrier, intrathecal synthesis of total IgG, toxoplasmic serology in blood and cerebrospinal fluid, and for intrathecal synthesis of IgG to Toxoplasma gondii. An empiric scale to gauge the possibility of clinical cerebral toxoplasmosis was used to classify the patients (+, +2, +3). Only an intrathecal synthesis of IgG to Toxoplasma gondii was found to be associated with suspected cerebral toxoplamosis: it was found in about 80% of patients, and more frequently in patients with a higher probability of disease. In contrast, alteration of the blood-brain barrier, intrathecal synthesis of total IgG and toxoplasmic serology in blood as well as in cerebrospinal fluid were not associated with suspected cerebral toxoplamosis. Taken together, these findings confirm that intrathecal synthesis of antitoxoplasmic antibodies of IgG isotype occurs in cerebral toxoplasmosis. Demonstration of intrathecal synthesis of antitoxoplasmic IgG antibodies could be used to confirm clinical diagnosis of cerebral toxoplamosis, especially in an African context, where sophisticated laboratory facilities are often lacking.
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