BACKGROUND: The medication used to treat benign prostate hyperplasia (BPH), a common condition in men over 50 years of age, can alter the levels of biomarkers used in prostate cancer detection. Commonly used medications for BPH include alpha-blockers, 5-alpha reductase inhibitors (5-ARIs), and muscarinic antagonists. We studied the impact of these drugs on total prostate-specific antigen (tPSA), free PSA (fPSA), [-2]proPSA, fPSA/tPSA ratio, and the Prostate Health Index (PHI), as well as novel potential biomarkers in the form of glycan composition of fPSA. PATIENTS AND METHODS: Serum samples were collected from 564 males with BPH, with a mean age of 68.5 years. The samples were used to measure levels of tPSA, fPSA, and [-2]proPSA. The fPSA/tPSA and PHI were then calculated. The glycan composition of fPSA was analyzed using lectin-based glycoprofiling. Pharmacotherapy data was collected from the patients' medical records. RESULTS: Alpha-blocker monotherapy was associated with higher fPSA and fPSA/tPSA ratio, and decreased PHI. Levels of tPSA were not impacted. Alpha-blocker and 5-ARI dual therapy was associated with reduced levels of fPSA, [-2]proPSA, and PHI. Therapy combining alpha-blockers and antimuscarinic agents did not significantly influence biomarker levels apart from an increase in a Maackia amurensis lectin-recognized glycan originating in fPSA. CONCLUSION: BPH pharmacotherapy notably affects prostate cancer biomarkers. Recognizing the impact of pharmacotherapy is crucial for achieving an accurate diagnosis of prostate cancer and for planning treatment.

• Klíčová slova
• 5‐alpha reductase inhibitors, PSA, alpha‐blockers, antimuscarinic agents, benign prostate hyperplasia, prostate cancer,
• MeSH
• alfa blokátory terapeutické užití   MeSH
• antagonisté muskarinových receptorů * terapeutické užití   MeSH
• glykosylace MeSH
• hyperplazie prostaty * krev   farmakoterapie   MeSH
• inhibitory 5-alfa-reduktasy terapeutické užití   MeSH
• lidé středního věku MeSH
• lidé MeSH
• nádory prostaty krev   farmakoterapie   MeSH
• prostata patologie   metabolismus   MeSH
• prostatický specifický antigen * krev   MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• Check Tag
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• Publikační typ
• časopisecké články MeSH
• Názvy látek
• alfa blokátory MeSH
• antagonisté muskarinových receptorů * MeSH
• inhibitory 5-alfa-reduktasy MeSH
• prostatický specifický antigen * MeSH