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.
- 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
CONTEXT: Despite the lack of level 1 evidence, metastasis-directed therapy (MDT) is used widely in the management of metastatic prostate cancer (mPCa) patients. Data are continuously emerging from well-designed prospective studies. OBJECTIVE: To summarise and report the evidence on oncological and safety outcomes of MDT in the management of mPCa patients. EVIDENCE ACQUISITION: We searched the PubMed, Scopus, and Web of Science databases for prospective studies assessing progression-free survival (PFS), local control (LC), androgen deprivation therapy (ADT)-free survival (ADT-FS), overall survival (OS), and/or adverse events (AEs) in mPCa patients treated with MDT. A meta-analysis was performed for 1- and 2-yr PFS, LC, ADT-FS, OS, and rate of AEs. Meta-regression and sensitivity analysis were performed to account for heterogeneity and identify moderators. EVIDENCE SYNTHESIS: We identified 22 prospective studies (n = 1137), including two randomised controlled trials (n = 116). Two studies were excluded from the meta-analysis (n = 120). The estimated 2-yr PFS was 46% (95% confidence interval [CI]: 36-56%) or 42% (95% CI: 33-52%) after excluding studies using biochemical or ADT-related endpoints. The estimated 2-yr LC, ADT-FS, and OS were 97% (95% CI: 94-98%), 55% (95% CI: 44-65%), and 97% (95% CI: 95-98%), respectively. Rates of treatment-related grade 2 and ≥3 AEs were 2.4% (95% CI: 0.2-7%) and 0.3% (95% CI: 0-1%), respectively. CONCLUSIONS: MDT is a promising treatment strategy associated with favourable PFS, excellent LC, and a low toxicity profile that allows oligorecurrent hormone-sensitive patients to avoid or defer ADT-related toxicity. Integration of MDT with other therapies offers a promising research direction, in particular, in conjunction with systemic treatments and as a component of definitive care for oligometastatic PCa. However, in the absence of randomised trials, using MDT for treatment intensification remains an experimental approach, and the impact on OS is uncertain. PATIENT SUMMARY: Direct treatment of metastases is a promising option for selected prostate cancer patients. It can delay hormone therapy and is being investigated as a way of intensifying treatment at the expense of manageable toxicity.
- MeSH
- antagonisté androgenů škodlivé účinky MeSH
- doba přežití bez progrese choroby MeSH
- hormony MeSH
- lidé MeSH
- nádory prostaty * farmakoterapie MeSH
- prospektivní studie MeSH
- Check Tag
- lidé MeSH
- mužské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- metaanalýza MeSH
- přehledy MeSH
- systematický přehled MeSH
CONTEXT: Active surveillance (AS) is a standard of care for patients with low-risk and selected intermediate-risk prostate cancer (PCa). Nevertheless, there is a lack of summary evidence on how to impact disease trajectory during AS. OBJECTIVE: To assess which interventions prevent PCa progression effectively during AS. EVIDENCE ACQUISITION: We queried PubMed, Scopus, and Web of Science databases to identify studies examining the impact of interventions aimed at slowing disease progression during AS. The primary endpoint was PCa progression, the definition of which must have included pathological upgrading. The secondary endpoint included treatment toxicities. EVIDENCE SYNTHESIS: We identified 22 studies, six randomized controlled trials and 16 observational studies, which analyzed the association between different interventions and PCa progression during AS. The interventions considered in the studies included 5-alpha reductase inhibitors (5-ARIs), statins, diet, exercise, chlormadinone, fexapotide triflutate (FT), enzalutamide, coffee, vitamin D3, and PROSTVAC. We found that administration of 5-ARIs was associated with improved progression-free survival (PFS; hazard ratio: 0.59; 95% confidence interval 0.48-0.72), with no increased toxicity signals. Therapies such as vitamin D3, chlormadinone, FT, and enzalutamide have shown some efficacy. However, these anticancer drugs have been associated with treatment-related adverse events in up to 88% of patients. CONCLUSIONS: The use of 5-ARIs in PCa patients on AS is associated with longer PFS. However, for the other interventions, it is difficult to draw clear conclusions based on the weak available evidence. PATIENT SUMMARY: Patients with prostate cancer managed with active surveillance (AS) who are treated with 5-alpha reductase inhibitors have a lower risk of disease progression, with minimal adverse events. Other interventions require more studies to determine their efficacy and safety profile in men on AS.
- MeSH
- inhibitory 5-alfa-reduktasy terapeutické užití MeSH
- lidé MeSH
- nádory prostaty * farmakoterapie patologie terapie MeSH
- pozorné vyčkávání * MeSH
- progrese nemoci * MeSH
- Check Tag
- lidé MeSH
- mužské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- metaanalýza MeSH
- přehledy MeSH
- systematický přehled MeSH
Prostate cancer is the most common malignancy in men, mostly affecting older men who harbor an increased prevalence of cardiovascular disease and metabolic syndrome. Androgen deprivation therapy (ADT), the standard therapy for various stages of prostate cancer, further increases the risk for cardiovascular disease and for metabolic syndrome. Therefore, screening for cardiovascular risk factors should be performed prior to the initiation of ADT, and, if necessary, cardiological evaluation and interdisciplinary management should be provided during and after completion of ADT. Moreover, the use of a gonadotropin-releasing hormone (GnRH) antagonist may help reduce cardiovascular risk in patients with cardiovascular disease.
- MeSH
- androgeny MeSH
- antagonisté androgenů škodlivé účinky MeSH
- hormon uvolňující gonadotropiny terapeutické užití MeSH
- kardiovaskulární nemoci * epidemiologie MeSH
- lidé MeSH
- metabolický syndrom * epidemiologie MeSH
- nádory prostaty * farmakoterapie MeSH
- senioři MeSH
- Check Tag
- lidé MeSH
- mužské pohlaví MeSH
- senioři MeSH
- Publikační typ
- anglický abstrakt MeSH
- časopisecké články MeSH
- přehledy MeSH
- MeSH
- karcinogeneze MeSH
- klinická studie jako téma MeSH
- kolorektální nádory etiologie farmakoterapie MeSH
- kyseliny mastné omega-3 farmakologie terapeutické užití MeSH
- lidé MeSH
- mastné kyseliny * metabolismus terapeutické užití MeSH
- nádory prostaty etiologie farmakoterapie MeSH
- nádory prsu farmakoterapie metabolismus MeSH
- nádory * etiologie farmakoterapie klasifikace metabolismus MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- přehledy MeSH
Boron has been suggested to enhance the biological effectiveness of proton beams in the Bragg peak region via the p + 11B → 3α nuclear capture reaction. However, a number of groups have observed no such enhancement in vitro or questioned its proposed mechanism recently. To help elucidate this phenomenon, we irradiated DU145 prostate cancer or U-87 MG glioblastoma cells by clinical 190 MeV proton beams in plateau or Bragg peak regions with or without 10B or 11B isotopes added as sodium mercaptododecaborate (BSH). The results demonstrate that 11B but not 10B or other components of the BSH molecule enhance cell killing by proton beams. The enhancement occurs selectively in the Bragg peak region, is present for boron concentrations as low as 40 ppm, and is not due to secondary neutrons. The enhancement is likely initiated by proton-boron capture reactions producing three alpha particles, which are rare events occurring in a few cells only, and their effects are amplified by intercellular communication to a population-level response. The observed up to 2-3-fold reductions in survival levels upon the presence of boron for the studied prostate cancer or glioblastoma cells suggest promising clinical applications for these tumour types.
- MeSH
- bor chemie MeSH
- glioblastom radioterapie farmakoterapie MeSH
- lidé MeSH
- nádorové buněčné linie MeSH
- nádory prostaty radioterapie farmakoterapie MeSH
- protonová terapie * metody MeSH
- protony MeSH
- terapie metodou neutronového záchytu (bor-10) * metody MeSH
- viabilita buněk účinky léků účinky záření MeSH
- Check Tag
- lidé MeSH
- mužské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
AIMS: Abiraterone treatment requires regular drug intake under fasting conditions due to pronounced food effect, which may impact patient adherence. The aim of this prospective study was to evaluate adherence to abiraterone treatment in patients with prostate cancer. To achieve this aim, an abiraterone population pharmacokinetic model was developed and patients' adherence has been estimated by comparison of measured levels of abiraterone with population model-based simulations. METHODS: A total of 1469 abiraterone plasma levels from 83 healthy volunteers collected in a bioequivalence study were analysed using a nonlinear mixed-effects model. Monte Carlo simulation was used to describe the theoretical distribution of abiraterone pharmacokinetic profiles at a dose of 1000 mg once daily. Adherence of 36 prostate cancer patients treated with abiraterone was then evaluated by comparing the real abiraterone concentration measured in each patient during follow-up visit with the theoretical distribution of profiles based on simulations. Patients whose abiraterone levels were ˂5th or ˃95th percentile of the distribution of simulated profiles were considered to be non-adherent. RESULTS: Based on this evaluation, 13 patients (36%) have been classified as non-adherent. We observed significant association (P = .0361) between richness of the breakfast and rate of non-adherence. Adherent patients reported significantly better overall condition in self-assessments (P = .0384). A trend towards a higher occurrence of adverse effects in non-adherent patients was observed. CONCLUSIONS: We developed an abiraterone population pharmacokinetic model and proposed an advanced approach to medical adherence evaluation. Due to the need for administration under fasting conditions, abiraterone therapy is associated with a relatively high rate of non-adherence.
- MeSH
- adherence k farmakoterapii * statistika a číselné údaje MeSH
- androsteny * farmakokinetika aplikace a dávkování terapeutické užití MeSH
- antitumorózní látky farmakokinetika aplikace a dávkování MeSH
- biologické modely * MeSH
- dospělí MeSH
- interakce mezi potravou a léky MeSH
- lidé středního věku MeSH
- lidé MeSH
- metoda Monte Carlo MeSH
- nádory prostaty * farmakoterapie MeSH
- omezení příjmu potravy MeSH
- prospektivní studie MeSH
- senioři MeSH
- terapeutická ekvivalence MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- senioři MeSH
- Publikační typ
- časopisecké články MeSH
Asi u čtvrtiny mužů s metastatickým kastračně rezistentním karcinomem prostaty (mCRPC) můžeme nalézt mutaci v některém z genů, které se účastní oprav DNA pomocí homologní rekombinace. Proteinovou skupinu poly-adenozindifosfát-ribózo-polymeráz (PARP) můžeme zablokovat pomocí tzv. PARP inhibitorů a opravy DNA tak neproběhnou. Prvním PARP inhibitorem, schváleným pro léčbu mCRPC progredujícího po léčbě abirateronem nebo enzalutamidem, je olaparib. Navíc v kombinaci s abirateronem jej můžeme použít již v první linii, kdy mCRPC progreduje na standardní hormonální léčbě.
About a quarter of men with metastatic castration-resistant prostate cancer (mCRPC) have a mutation in one of the genes involved in DNA repair through homologous recombination. The protein group poly (ADP-ribose) polymerase (PARP) can be blocked using so-called PARP inhibitors and DNA repair will not be done. The first PARP inhibitor approved for the treatment of mCRPC progressing after treatment with abiraterone or enzalutamide is olaparib. In addition, in combination with abiraterone, we can use it already in the first line, when mCRPC progresses on standard hormonal treatment.
- Klíčová slova
- olaparib,
- MeSH
- abirateron aplikace a dávkování MeSH
- antitumorózní látky aplikace a dávkování MeSH
- doba přežití bez progrese choroby MeSH
- klinická studie jako téma MeSH
- kombinovaná farmakoterapie metody MeSH
- lidé MeSH
- metastázy nádorů farmakoterapie MeSH
- nádory prostaty rezistentní na kastraci farmakoterapie genetika komplikace MeSH
- nádory prostaty * farmakoterapie genetika komplikace MeSH
- PARP inhibitory * aplikace a dávkování farmakologie MeSH
- statistika jako téma MeSH
- Check Tag
- lidé MeSH
- mužské pohlaví MeSH
- Publikační typ
- práce podpořená grantem MeSH
Terapie metastatického hormonálně senzitivního karcinomu prostaty dosáhla v posledních letech řady změn a nabídla tak pacientům množství nových možností. V roce 2022 dvě randomizované studie fáze III, PEACE-1 a ARASENS, prokázaly účinnost časné intenzifikace terapie, kdy kombinace tripletu - androgenní deprivační terapie - ADT, ARTA (abirateron - PEACE-1, darolutamid - ARASENS) a docetaxelu prokázala zlepšení celkového přežití - OS oproti terapii dubletem (ADT - androgen deprivační terapie + docetaxel). V níže popsané kazuistice demonstrujeme úspěšné použití terapie tripletem u pacienta s pokročilým primárně metastatickým karcinomem prostaty s karcinomatózou kostní dřeně.
The treatment for metastatic hormone-sensitive prostate cancer has undergone numerous changes in recent years, thus offering patients a number of new options. In 2022, two randomized phase III trials, PEACE-1 and ARASENS, demonstrated the efficacy of early intensification therapy wherein the triplet combination therapy of androgen deprivation therapy (ADT), ARTA (abiraterone - PEACE-1, darolutamide - ARASENS), and docetaxel showed improved overall survival (OS) compared with double therapy (androgen deprivation therapy + docetaxel). The present case report demonstrates a successful use of triplet therapy in a patient with advanced primary metastatic prostate cancer with carcinomatosis of the bone marrow.
- MeSH
- antitumorózní látky aplikace a dávkování MeSH
- diferenciální diagnóza MeSH
- hemoglobiny analýza MeSH
- kombinovaná farmakoterapie * metody MeSH
- lidé MeSH
- metastázy nádorů MeSH
- nádory kostní dřeně diagnóza sekundární MeSH
- nádory prostaty * diagnóza farmakoterapie MeSH
- počítačová rentgenová tomografie MeSH
- prostatický specifický antigen analýza MeSH
- senioři MeSH
- Check Tag
- lidé MeSH
- mužské pohlaví MeSH
- senioři MeSH
- Publikační typ
- kazuistiky MeSH
