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  • Title: Adhesion molecules, chemokines and matrix metallo-proteinases response after albendazole and albendazole plus steroid therapy in swine neurocysticercosis.
    Author: Singh SK, Prasad KN, Singh AK, Gupta KK, Singh A, Tripathi M, Gupta RK.
    Journal: Exp Parasitol; 2017 Nov; 182():1-8. PubMed ID: 28821422.
    Abstract:
    The treatment of neurocysticercosis (NCC) varies with location, number and stage of the Taenia solium cysticerci (cysts). Albendazole (ABZ) effectively kills cysticerci, and subsequently induces neuro-inflammation facilitated by leukocyte infiltration. We hypothesize that immune response varies around drug responder (degenerating/dying) and non-responder (viable) cysts after ABZ and ABZ plus steroid (ABZS) therapy, which may determine the disease pathogenesis. Twenty cysticercotic swine were treated with ABZ (n = 10; group1) and ABZS (n = 10; group2). Expression of adhesion molecules, chemokines and matrix metallo-proteinases (MMPs) was measured by qRT-PCR (quantitative reverse transcriptase-polymerase chain reaction) and ELISA. Gelatin gel zymography was performed to detect the activity of MMP-2 and -9. In group1, ABZ therapy induced higher expressions of ICAM-1 (intercellular adhesion molecule-1), VCAM-1 (vascular cell adhesion molecule-1), E-selectin, MCP-1 (monocyte chemotactic protein-1), Eotaxin-1, MIP-1α (macrophage inflammatory protein-1α), RANTES (regulated on activation, normal T cell expressed and secreted), MMP-2 and MMP-9 around ABZ responder (AR) cysts. Three pigs with cyst burdens ≥10 died following ABZ therapy. However, in group2, moderate expressions of ICAM-1, VCAM-1, E-selectin, RANTES and MMP-9 were associated with ABZS responder (ASR), whereas low expressions of these molecules were associated with ABZS non-responder (ASNR) cysts. In conclusion, ABZ alone therapy is not safe since it causes death of pigs due to higher inflammatory immune response around dying cysts. However, combination therapy is an effective treatment regimen even with the high cyst burden.
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