Establishment of experimental autoimmune prostatitis model by T2 peptide in aluminium hydroxide adjuvant

A mouse model was developed to simulate the clinical features of chronic prostatitis/chronic pelvic pain syndrome using peptide (T₂ ). Forty C57BL/6 mice were divided into four groups of 10 mice each, averagely and randomly. T₂ plus aluminium hydroxide adjuvant group was given subcutaneous injection with the emulsion mixture of T₂ and aluminium hydroxide adjuvant, the T₂ group with T₂ , the aluminium hydroxide adjuvant group with aluminium hydroxide adjuvant and the normal control group with 0.9/% NaCl solution. Haematoxylin andeosin staining was used to observe the inflammation of the prostate. Plasma levels of TNF-α and CRP were detected by ELISA kit. The expression of IL-1βin the prostate was investigated by immunohistochemistry. The statistical differences between the groups were compared by t test. Histopathological analyses demonstrated that prostate lesions were most severe in the group immunised with T₂ plus aluminium hydroxide adjuvant. Plasma levels of TNF-α and CRP were statistically elevated compared with control groups. The expression levels of IL-1β in the prostate were more obvious than control groups. T₂ in aluminium hydroxide adjuvant subcutaneous injection could successfully set up experimental autoimmune prostatitis in C57BL/6 mice. This murine model would be greatly beneficial to further comprehend the aetiology, pathogenesis and explicit treatment of CP/CPPS.

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