Abstract

Benign prostatic hyperplasia (BPH) progresses with age and is associated with chronic inflammation. We focused on the relationship between BPH and ganglioside monosialodihexosylganglioside (GM3), a sialic acid-containing glycosphingolipid that is involved in chronic inflammation. GM3 molecular species would have a significant role in regulating inflammatory processes. In this prospective study, preoperative and postoperative serum samples were obtained from patients who underwent holmium laser enucleation of the prostate (HoLEP) for BPH. Preoperative and postoperative measurements of serum GM3 species were performed one month before and three months after HoLEP. Twenty-three patients were included in the study. The average patient age was 75 years, and the average prostate volume was 66 mL. The average weight of the surgically resected prostate tissue was 42 g. At three months after HoLEP, the serum concentration of GM3 species was found to have decreased after HoLEP compared with the preoperative concentration of GM3 species. Six GM3 species such as d18:1-17:0 [C17 acyl chain (-17:0) linked to a C18 sphingosine base with a double bond (d18:1-) by an amide linkage], were significantly reduced. The sample size was small; therefore, this study showed only preliminary results and could not evaluate prostate tissue inflammation. This study showed that the serum concentrations of several GM3 species, which indicate chronic inflammation, may be significantly reduced after BPH surgery.

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