Abstract
To investigate firstly the relationship between semenogelin I (Sg I) expression and seminal vesiculitis. Seminal vesiculitis is one of the most common diseases in male urogenital system. However, the cause and the pathogenesis of seminal vesiculitis remain unknown. Sg I, mainly synthesized and secreted by seminal vesicle, is abundant in human seminal plasma and has antibacterial activity. Tissue samples were collected from 15 normal cases and 28 patients with seminal vesiculitis. Reverse transcription-polymerase chain reaction was performed to detect the expression difference of Sg I messenger ribonucleic acid (RNA) between normal seminal vesicle tissues and seminal vesiculitis tissues. Immunohistochemistry was applied to detect the expression difference of Sg I protein between the 2 groups. Reverse transcription-polymerase chain reaction showed the expression of Sg I messenger RNA in seminal vesiculitis tissues to be significantly lower than in normal seminal vesicle tissues. In most cases with seminal vesiculitis (78.6%), the same result was observed upon immunohistochemical analysis at the protein level. Abnormal expression of Sg I is closely related to seminal vesiculitis. Low expression of Sg I may play an important role in the occurrence and the development of seminal vesiculitis through weakening the antibacterial activity of seminal vesicle.
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