ArticleNan fang yi ke da xue xue bao = Journal of Southern Medical University2024
[Maggot alleviates imiquimod-induced psoriasis-like skin lesions in mice by inhibiting immune stress and complement activation].
Article in Nan fang yi ke da xue xue bao = Journal of Southern Medical University, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectiveTo explore the therapeutic mechanism of maggot for psoriasis-like lesions in mice from the perspective of immune stress and complement activation regulation.
methodsThirty-six male C57BL/6 mice were randomly divided into control group, model group, maggot (1.25%, 2.5%, and 5%) groups, and Benvitimod (1%) group. Psoriasis-like lesions were induced by application of imiquimod cream, and the severity of skin lesions was assessed using the modified Psoriasis Area and Severity Index (MPASI) score. Auricular swelling of the mice was observed, and histopathological changes of the skin lesions were examined with HE staining. Scratching behavior of the mice was observed and the spleen index was calculated. Toluidine blue staining was used to detect mast cells in the skin lesions, and serum levels of IgG, IgM, the complements CH50, C1s, C3, C3a, C5 and C5a, and the inflammatory factors IL-23, IL-17A and TNF-α were determined with ELISA.
resultsIn mice with imiquimod-induced psoriasis-like skin lesions, treatment with the maggot at the 3 doses significantly decreased MPASI score, alleviated auricular swelling and pathologies in the skin lesions, reduced scratching behaviors, spleen index, and the number of mast cells in the lesions. Treatment with high-dose maggot significantly lowered serum levels of IgG, C1s, C3a, C5a, IL-23, IL-17A and TNF- α and the levels of C1s, C3, C3a, C5 and C5a in the lesion tissue, and increased serum levels of CH50, C3, and C5. The therapeutic effect of maggot showed a dose-effect dependence.
conclusionMaggot can alleviate psoriasislike skin lesions in mice by inhibiting immune stress and complement activation.
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