1
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Tseng CH. Rosiglitazone has a null association with the risk of prostate cancer in type 2 diabetes patients. Front Endocrinol (Lausanne) 2023; 14:1185053. [PMID: 37560306 PMCID: PMC10407244 DOI: 10.3389/fendo.2023.1185053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 07/10/2023] [Indexed: 08/11/2023] Open
Abstract
Background This study investigated the risk of prostate cancer in ever users and never users of rosiglitazone in diabetes patients in Taiwan. Methods The nationwide database of the National Health Insurance was used to enroll male patients who had a new diagnosis of type 2 diabetes mellitus at an age ≥ 25 years from 1999 to 2005. A total of 11,495 ever users and 11,495 never users of rosiglitazone matched on propensity score were selected and they were followed up for the incidence of prostate cancer from January 1, 2006 until December 31, 2011. Cox proportional hazard model incorporated with the inverse probability of treatment weighting using the propensity score was used to estimate hazard ratios. Results At the end of follow-up, incident cases of prostate cancer were found in 84 never users and 90 ever users of rosiglitazone. The calculated incidence was 173.20 per 100,000 person-years in never users and was 187.59 per 100,000 person-years in ever users. The overall hazard ratio (95% confidence intervals) for ever versus never users was 1.089 (0.808-1.466). The hazard ratios were 0.999 (0.643-1.552) for the first tertile (< 672 mg), 1.147 (0.770-1.709) for the second tertile (672-3584 mg) and 1.116 (0.735-1.695) for the third tertile (> 3584 mg) of cumulative dose. Sensitivity analyses consistently showed a null association between rosiglitazone and prostate cancer risk. Conclusion Rosiglitazone has a null effect on the risk of prostate cancer.
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Affiliation(s)
- Chin-Hsiao Tseng
- Department of Internal Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
- Division of Endocrinology and Metabolism, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
- National Institute of Environmental Health Sciences of the National Health Research Institutes, Zhunan, Taiwan
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2
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Pejčić T, Todorović Z, Đurašević S, Popović L. Mechanisms of Prostate Cancer Cells Survival and Their Therapeutic Targeting. Int J Mol Sci 2023; 24:ijms24032939. [PMID: 36769263 PMCID: PMC9917912 DOI: 10.3390/ijms24032939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 01/29/2023] [Accepted: 01/31/2023] [Indexed: 02/05/2023] Open
Abstract
Prostate cancer (PCa) is today the second most common cancer in the world, with almost 400,000 deaths annually. Multiple factors are involved in the etiology of PCa, such as older age, genetic mutations, ethnicity, diet, or inflammation. Modern treatment of PCa involves radical surgical treatment or radiation therapy in the stages when the tumor is limited to the prostate. When metastases develop, the standard procedure is androgen deprivation therapy, which aims to reduce the level of circulating testosterone, which is achieved by surgical or medical castration. However, when the level of testosterone decreases to the castration level, the tumor cells adapt to the new conditions through different mechanisms, which enable their unhindered growth and survival, despite the therapy. New knowledge about the biology of the so-called of castration-resistant PCa and the way it adapts to therapy will enable the development of new drugs, whose goal is to prolong the survival of patients with this stage of the disease, which will be discussed in this review.
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Affiliation(s)
- Tomislav Pejčić
- Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
- Clinic of Urology, University Clinical Centre of Serbia, 11000 Belgrade, Serbia
- Correspondence: ; Tel.: +381-641281844
| | - Zoran Todorović
- Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
- University Medical Centre “Bežanijska kosa”, University of Belgrade, 11000 Belgrade, Serbia
| | - Siniša Đurašević
- Faculty of Biology, University of Belgrade, 11000 Belgrade, Serbia
| | - Lazar Popović
- Faculty of Medicine, University of Novi Sad, 21000 Novi Sad, Serbia
- Medical Oncology Department, Oncology Institute of Vojvodina, 21000 Novi Sad, Serbia
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3
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Lasorsa F, di Meo NA, Rutigliano M, Ferro M, Terracciano D, Tataru OS, Battaglia M, Ditonno P, Lucarelli G. Emerging Hallmarks of Metabolic Reprogramming in Prostate Cancer. Int J Mol Sci 2023; 24:ijms24020910. [PMID: 36674430 PMCID: PMC9863674 DOI: 10.3390/ijms24020910] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 12/30/2022] [Accepted: 01/01/2023] [Indexed: 01/06/2023] Open
Abstract
Prostate cancer (PCa) is the most common male malignancy and the fifth leading cause of cancer death in men worldwide. Prostate cancer cells are characterized by a hybrid glycolytic/oxidative phosphorylation phenotype determined by androgen receptor signaling. An increased lipogenesis and cholesterogenesis have been described in PCa cells. Many studies have shown that enzymes involved in these pathways are overexpressed in PCa. Glutamine becomes an essential amino acid for PCa cells, and its metabolism is thought to become an attractive therapeutic target. A crosstalk between cancer and stromal cells occurs in the tumor microenvironment because of the release of different cytokines and growth factors and due to changes in the extracellular matrix. A deeper insight into the metabolic changes may be obtained by a multi-omic approach integrating genomics, transcriptomics, metabolomics, lipidomics, and radiomics data.
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Affiliation(s)
- Francesco Lasorsa
- Urology, Andrology and Kidney Transplantation Unit, Department of Precision and Regenerative Medicine and Ionian Area, University of Bari “Aldo Moro”, 70124 Bari, Italy
| | - Nicola Antonio di Meo
- Urology, Andrology and Kidney Transplantation Unit, Department of Precision and Regenerative Medicine and Ionian Area, University of Bari “Aldo Moro”, 70124 Bari, Italy
| | - Monica Rutigliano
- Urology, Andrology and Kidney Transplantation Unit, Department of Precision and Regenerative Medicine and Ionian Area, University of Bari “Aldo Moro”, 70124 Bari, Italy
| | - Matteo Ferro
- Division of Urology, European Institute of Oncology, IRCCS, 20141 Milan, Italy
| | - Daniela Terracciano
- Department of Translational Medical Sciences, University of Naples “Federico II”, 80131 Naples, Italy
| | - Octavian Sabin Tataru
- The Institution Organizing University Doctoral Studies (I.O.S.U.D.), George Emil Palade University of Medicine, Pharmacy, Sciences and Technology, 540142 Târgu Mureș, Romania
| | - Michele Battaglia
- Urology, Andrology and Kidney Transplantation Unit, Department of Precision and Regenerative Medicine and Ionian Area, University of Bari “Aldo Moro”, 70124 Bari, Italy
| | - Pasquale Ditonno
- Urology, Andrology and Kidney Transplantation Unit, Department of Precision and Regenerative Medicine and Ionian Area, University of Bari “Aldo Moro”, 70124 Bari, Italy
| | - Giuseppe Lucarelli
- Urology, Andrology and Kidney Transplantation Unit, Department of Precision and Regenerative Medicine and Ionian Area, University of Bari “Aldo Moro”, 70124 Bari, Italy
- Correspondence: or
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4
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Role of Lipids and Lipid Metabolism in Prostate Cancer Progression and the Tumor’s Immune Environment. Cancers (Basel) 2022; 14:cancers14174293. [PMID: 36077824 PMCID: PMC9454444 DOI: 10.3390/cancers14174293] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 08/12/2022] [Accepted: 08/24/2022] [Indexed: 11/16/2022] Open
Abstract
Modulation of lipid metabolism during cancer development and progression is one of the hallmarks of cancer in solid tumors; its importance in prostate cancer (PCa) has been demonstrated in numerous studies. Lipid metabolism is known to interact with androgen receptor signaling, an established driver of PCa progression and castration resistance. Similarly, immune cell infiltration into prostate tissue has been linked with the development and progression of PCa as well as with disturbances in lipid metabolism. Immuno-oncological drugs inhibit immune checkpoints to activate immune cells’ abilities to recognize and destroy cancer cells. These drugs have proved to be successful in treating some solid tumors, but in PCa their efficacy has been poor, with only a small minority of patients demonstrating a treatment response. In this review, we first describe the importance of lipid metabolism in PCa. Second, we collate current information on how modulation of lipid metabolism of cancer cells and the surrounding immune cells may impact the tumor’s immune responses which, in part, may explain the unimpressive results of immune-oncological treatments in PCa.
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5
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Joshi SN, Murphy EA, Olaniyi P, Bryant RJ. The multiple effects of aspirin in prostate cancer patients. Cancer Treat Res Commun 2020; 26:100267. [PMID: 33360326 DOI: 10.1016/j.ctarc.2020.100267] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 12/02/2020] [Accepted: 12/07/2020] [Indexed: 01/31/2023]
Abstract
Aspirin is a commonly used medication with anti-inflammatory and analgesic properties, and it is widely used to reduce the risk of ischaemic heart disease-related events and/or cerebrovascular accidents. However, there is also evidence from epidemiological and interventional studies to suggest that regular aspirin use can reduce the risk of prostate cancer development and progression, and can reduce the risk of disease recurrence following anti-prostate cancer therapy. Aspirin use in African-American men is associated with a reduced incidence of advanced PCa and reduced disease recurrence, and there is evidence from other studies of an association between regular aspirin use and decreased PCa-related mortality. The cyclooxygenase-2 enzyme inhibited by Aspirin and other NSAIDs, and which catalyses prostaglandin synthesis and mediates inflammation, is overexpressed in prostate cancer, therefore inhibition of cyclooxygenase-2 may have direct, and indirect, therapeutic effects. This review explores the evidence suggesting that aspirin use can modify prostate cancer biology and disease characteristics, and explores the potential mechanisms underpinning the observed associations between aspirin use and modification of prostate cancer risk. It also summarises the potential for adjuvant aspirin use to combine with other therapeutic approaches such as radical surgery and radiotherapy.
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Affiliation(s)
- S N Joshi
- Medical Sciences Divisional Office, University of Oxford, Level 3, John Radcliffe Hospital, Oxford OX3 9DU, United Kingdom
| | - E A Murphy
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford OX3 7DQ, United Kingdom
| | - P Olaniyi
- Department of Urology, Ipswich Hospital, East Suffolk and North Essex NHS Foundation Trust, Heath Road, Ipswich IP4 5PD, United Kingdom
| | - R J Bryant
- Department of Urology, Ipswich Hospital, East Suffolk and North Essex NHS Foundation Trust, Heath Road, Ipswich IP4 5PD, United Kingdom; Department of Urology, Churchill Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford OX3 7LE, United Kingdom.
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6
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Cardoso HJ, Carvalho TMA, Fonseca LRS, Figueira MI, Vaz CV, Socorro S. Revisiting prostate cancer metabolism: From metabolites to disease and therapy. Med Res Rev 2020; 41:1499-1538. [PMID: 33274768 DOI: 10.1002/med.21766] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 10/24/2020] [Accepted: 11/22/2020] [Indexed: 12/24/2022]
Abstract
Prostate cancer (PCa), one of the most commonly diagnosed cancers worldwide, still presents important unmet clinical needs concerning treatment. In the last years, the metabolic reprogramming and the specificities of tumor cells emerged as an exciting field for cancer therapy. The unique features of PCa cells metabolism, and the activation of specific metabolic pathways, propelled the use of metabolic inhibitors for treatment. The present work revises the knowledge of PCa metabolism and the metabolic alterations that underlie the development and progression of the disease. A focus is given to the role of bioenergetic sources, namely, glucose, lipids, and glutamine sustaining PCa cell survival and growth. Moreover, it is described as the action of oncogenes/tumor suppressors and sex steroid hormones in the metabolic reprogramming of PCa. Finally, the status of PCa treatment based on the inhibition of metabolic pathways is presented. Globally, this review updates the landscape of PCa metabolism, highlighting the critical metabolic alterations that could have a clinical and therapeutic interest.
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Affiliation(s)
- Henrique J Cardoso
- CICS-UBI-Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - Tiago M A Carvalho
- CICS-UBI-Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - Lara R S Fonseca
- CICS-UBI-Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - Marília I Figueira
- CICS-UBI-Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - Cátia V Vaz
- CICS-UBI-Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - Sílvia Socorro
- CICS-UBI-Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
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7
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Wang K, Gerke TA, Chen X, Prosperi M. Association of statin use with risk of Gleason score-specific prostate cancer: A hospital-based cohort study. Cancer Med 2019; 8:7399-7407. [PMID: 31595713 PMCID: PMC6885894 DOI: 10.1002/cam4.2500] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 08/04/2019] [Accepted: 08/05/2019] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Conflicting evidence suggests that statins act chemopreventively against prostate cancer (PCa). Whether the association of statin use with PCa risk is Gleason score-dependent, time-, dose-respondent is not well studied. METHODS We conducted a cohort study at a tertiary hospital in the Southeastern US using longitudinal data of electronic medical records (EMR) from 1994 to 2016. Only cancer-free men aged >18 years at baseline with follow-up time of ≥12 months were included. Time-dependent Cox proportional hazards regression was used to estimate adjusted hazard ratios (aHRs) with 95% confidence intervals (CIs). RESULTS Among 13 065 men, 2976 were diagnosed with PCa over median follow-up of 6.6 years. Statin use was associated with lower risk of both Gleason low- (score <7: aHR, 0.85; 95% CI, 0.74-0.96) and high-grade PCa (score ≥7: aHR, 0.54; 95% CI, 0.42-0.69). The protective association was observed only when statins had been used for a relatively longer duration (≥11 months) or higher dose (≥121 defined daily doses), and were more pronounced for PCa of higher Gleason score (<7: aHR, 0.85, 95% CI, 0.74-0.96; 7 [3 + 4]: aHR, 0.62, 95% CI, 0.43-0.90; 7 [4 + 3]: aHR, 0.49, 95% CI, 0.29-0.82; 8: aHR, 0.60, 95% CI, 0.37-0.96; 9-10: aHR, 0.24, 95% CI, 0.11-0.54). Lipophilic statins (aHR, 0.83; 95% CI, 0.72-0.95) might be more protective than hydrophilic statins (aHR, 0.91, 95% CI, 0.63-1.33) against PCa. CONCLUSION Statin use might be associated with reduced PCa risk only when used for a relatively longer duration, and the risk reduction was higher for PCa of higher Gleason score.
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Affiliation(s)
- Kai Wang
- Department of Epidemiology, University of Florida, Gainesville, Florida.,Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
| | - Travis A Gerke
- Department of Cancer Epidemiology, Moffitt Cancer Center, Tampa, Florida
| | - Xinguang Chen
- Department of Epidemiology, University of Florida, Gainesville, Florida
| | - Mattia Prosperi
- Department of Epidemiology, University of Florida, Gainesville, Florida
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8
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Malik M, Britten J, Borahay M, Segars J, Catherino WH. Simvastatin, at clinically relevant concentrations, affects human uterine leiomyoma growth and extracellular matrix production. Fertil Steril 2019; 110:1398-1407.e1. [PMID: 30503138 DOI: 10.1016/j.fertnstert.2018.07.024] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 07/23/2018] [Accepted: 07/26/2018] [Indexed: 12/17/2022]
Abstract
OBJECTIVE To observe the antifibroid effects of therapeutic concentrations of simvastatin, which interferes with cholesterol biosynthesis, a known precursor of five major classes of steroid hormones, including progesterone and estrogen, which play a major role in the development and growth of uterine leiomyomas. DESIGN Two-dimensional and three-dimensional cell culture study of immortalized human leiomyoma and patient-matched myometrium cells treated with simvastatin. SETTING University laboratory. PATIENT(S) None. INTERVENTIONS(S) None. MAIN OUTCOME MEASURE(S) Cell proliferation, alteration in apoptotic signaling pathways, and extracellular matrix (ECM) protein production. RESULT(S) Simvastatin demonstrated a concentration-dependent antiproliferative effect on both the leiomyoma cells and the patient-matched myometrium cells, but a higher inhibitory effect at lower concentrations of simvastatin was observed in leiomyoma cells. Simvastatin also regulated leiomyoma cell apoptosis through a concentration-dependent increase in activity of caspase-3. Simvastatin significantly inhibited expression of major ECM proteins collagen I, collagen III, fibronectin, versican, and brevican in leiomyoma cells at concentrations as low as 10-9 mol/L within 48 hours of exposure. CONCLUSION(S) Simvastatin induces apoptosis in uterine leiomyoma cells at low concentrations, as evidenced by increased active caspase levels. Furthermore, inhibited production of the ECM proteins may lead to reduction in tumor size. Simvastatin may represent a novel therapeutic treatment strategy for uterine leiomyomas.
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Affiliation(s)
- Minnie Malik
- Department of Obstetrics and Gynecology, Uniformed Services University of the Health Sciences, Bethesda, Maryland
| | - Joy Britten
- Department of Obstetrics and Gynecology, Uniformed Services University of the Health Sciences, Bethesda, Maryland
| | - Mostafa Borahay
- Division of Reproductive Sciences and Women's Health Research, Department of Gynecology and Obstetrics, Johns Hopkins Medicine, Baltimore, Maryland
| | - James Segars
- Division of Reproductive Sciences and Women's Health Research, Department of Gynecology and Obstetrics, Johns Hopkins Medicine, Baltimore, Maryland
| | - William H Catherino
- Department of Obstetrics and Gynecology, Uniformed Services University of the Health Sciences, Bethesda, Maryland.
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9
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Shang Z, Wang X, Yan H, Cui B, Wang Q, Wu J, Cui X, Li J, Ou T, Yang K. Intake of Non-steroidal Anti-inflammatory Drugs and the Risk of Prostate Cancer: A Meta-Analysis. Front Oncol 2018; 8:437. [PMID: 30406025 PMCID: PMC6206266 DOI: 10.3389/fonc.2018.00437] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 09/19/2018] [Indexed: 11/23/2022] Open
Abstract
Background: Epidemiological evidences regarding the association between the use of non-steroidal anti-inflammatory drugs (NSAIDs) and the risk of prostate cancer (PC) is still controversial. Therefore, we conducted a meta-analysis to explore the controversy that exists. Methods: Electronic databases including Medline, EMBASE, Web of Science, Cochrane Library, BIOSIS, Scopus, CBM, CNKI, WANFANG, and CQVIP were used to search for and identify eligible studies published until December 31, 2017. Pooled effect estimates for the relative risk (RR) were computed through fixed-effects or random-effects models as appropriate. Publication bias was evaluated by Egger's and Begg's tests and potential sources of heterogeneity were investigated in subgroup analyses. Results: A total of 43 observational studies were eligible for this meta-analysis. A protective effect was identified for the intake of any NSAIDs on the risk of PC (pooled RR = 0.89, 95% CI = 0.81–0.98). Moreover, the long-term intake of NSAIDs (≥5 years rather than ≥4 years) was associated with reduced PC incidence (pooled RR = 0.882, 95% CI = 0.785–0.991). Aspirin intake was also associated with a 7.0% risk reduction of PC (pooled RR = 0.93, 95% CI = 0.89–0.96). The inverse association became stronger for advanced PC and PC with a Gleason score ≥7 compared to the association with total PC. Interestingly, it was the daily dose (≥1 pill/day) rather than, long-term aspirin intake (≥4 or ≥5 years) that was associated with reduced PC incidence (pooled RR = 0.875, 95% CI = 0.792–0.967). The pooled effects for non-aspirin NSAIDs demonstrated no significantly adverse or beneficial effects on total PC, advanced PC, or PC with Gleason score ≥7, though all pooled RRs were >1. Conclusions: Our findings suggested a protective effect of the intake of any NSAIDs on the risk of PC, especially in those who took the NSAIDs for a long period. Moreover, aspirin intake was also associated with a decreased risk of PC, and there was a dose related association between aspirin intake and the risk of PC, while no significant effects of long-term aspirin intake were found on the PC incidence.
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Affiliation(s)
- Zhenhua Shang
- Department of Urology, Xuanwu Hospital Capital Medical University, Beijing, China
| | - Xue Wang
- Department of Library, Xuanwu Hospital Capital Medical University, Beijing, China
| | - Hao Yan
- Department of Urology, Xuanwu Hospital Capital Medical University, Beijing, China
| | - Bo Cui
- Department of Urology, Xuanwu Hospital Capital Medical University, Beijing, China
| | - Qi Wang
- Department of Urology, Xuanwu Hospital Capital Medical University, Beijing, China
| | - Jiangtao Wu
- Department of Urology, Xuanwu Hospital Capital Medical University, Beijing, China
| | - Xin Cui
- Department of Urology, Xuanwu Hospital Capital Medical University, Beijing, China
| | - Jin Li
- Department of Urology, Xuanwu Hospital Capital Medical University, Beijing, China
| | - Tongwen Ou
- Department of Urology, Xuanwu Hospital Capital Medical University, Beijing, China
| | - Kun Yang
- Department of Evidence-Based Medicine, Xuanwu Hospital Capital Medical University, Beijing, China
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10
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Galbraith L, Leung HY, Ahmad I. Lipid pathway deregulation in advanced prostate cancer. Pharmacol Res 2018; 131:177-184. [PMID: 29466694 DOI: 10.1016/j.phrs.2018.02.022] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 02/08/2018] [Accepted: 02/14/2018] [Indexed: 01/03/2023]
Abstract
The link between prostate cancer (PC) development and lipid metabolism is well established, with AR intimately involved in a number of lipogenic processes involving SREBP1, PPARG, FASN, ACC, ACLY and SCD1. Recently, there is growing evidence implicating the role of obesity and peri-prostatic adipose tissue (PPAT) in PC aggressiveness and related mortality, suggesting the importance of lipid pathways in both localised and disseminated disease. A number of promising agents are in development to target the lipogenic axis in PC, and the likelihood is that these agents will form part of combination drug strategies, with targeting of multiple metabolic pathways (e.g. FASN and CPT1), or in combination with AR pathway inhibitors (SCD1 and AR).
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Affiliation(s)
- Laura Galbraith
- CRUK Beatson Institute, Garscube Estate, Switchback Road, Bearsden, Glasgow G61 1BD, UK; Institute of Cancer Sciences, University of Glasgow, Glasgow G61 1QH, UK
| | - Hing Y Leung
- CRUK Beatson Institute, Garscube Estate, Switchback Road, Bearsden, Glasgow G61 1BD, UK; Institute of Cancer Sciences, University of Glasgow, Glasgow G61 1QH, UK
| | - Imran Ahmad
- CRUK Beatson Institute, Garscube Estate, Switchback Road, Bearsden, Glasgow G61 1BD, UK; Institute of Cancer Sciences, University of Glasgow, Glasgow G61 1QH, UK.
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11
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Rye MB, Bertilsson H, Andersen MK, Rise K, Bathen TF, Drabløs F, Tessem MB. Cholesterol synthesis pathway genes in prostate cancer are transcriptionally downregulated when tissue confounding is minimized. BMC Cancer 2018; 18:478. [PMID: 29703166 PMCID: PMC5922022 DOI: 10.1186/s12885-018-4373-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Accepted: 04/15/2018] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND The relationship between cholesterol and prostate cancer has been extensively studied for decades, where high levels of cellular cholesterol are generally associated with cancer progression and less favorable outcomes. However, the role of in vivo cellular cholesterol synthesis in this process is unclear, and data on the transcriptional activity of cholesterol synthesis pathway genes in tissue from prostate cancer patients are inconsistent. METHODS A common problem with cancer tissue data from patient cohorts is the presence of heterogeneous tissue which confounds molecular analysis of the samples. In this study we present a general method to minimize systematic confounding from stroma tissue in any prostate cancer cohort comparing prostate cancer and normal samples. In particular we use samples assessed by histopathology to identify genes enriched and depleted in prostate stroma. These genes are then used to assess stroma content in tissue samples from other prostate cancer cohorts where no histopathology is available. Differential expression analysis is performed by comparing cancer and normal samples where the average stroma content has been balanced between the sample groups. In total we analyzed seven patient cohorts with prostate cancer consisting of 1713 prostate cancer and 230 normal tissue samples. RESULTS When stroma confounding was minimized, differential gene expression analysis over all cohorts showed robust and consistent downregulation of nearly all genes in the cholesterol synthesis pathway. Additional Gene Ontology analysis also identified cholesterol synthesis as the most significantly altered metabolic pathway in prostate cancer at the transcriptional level. CONCLUSION The surprising observation that cholesterol synthesis genes are downregulated in prostate cancer is important for our understanding of how prostate cancer cells regulate cholesterol levels in vivo. Moreover, we show that tissue heterogeneity explains the lack of consistency in previous expression analysis of cholesterol synthesis genes in prostate cancer.
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Affiliation(s)
- Morten Beck Rye
- Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology, P.O. Box 8905, NO-7491 Trondheim, Norway
- Clinic of Surgery, St. Olavs Hospital, Trondheim University Hospital, 7030 Trondheim, Norway
| | - Helena Bertilsson
- Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology, P.O. Box 8905, NO-7491 Trondheim, Norway
- Department of Urology, St. Olavs Hospital, Trondheim University Hospital, 7030 Trondheim, Norway
| | - Maria K. Andersen
- MI Lab, Department of Circulation and Medical Imaging, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway
| | - Kjersti Rise
- Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology, P.O. Box 8905, NO-7491 Trondheim, Norway
| | - Tone F. Bathen
- MI Lab, Department of Circulation and Medical Imaging, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway
| | - Finn Drabløs
- Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology, P.O. Box 8905, NO-7491 Trondheim, Norway
| | - May-Britt Tessem
- Clinic of Surgery, St. Olavs Hospital, Trondheim University Hospital, 7030 Trondheim, Norway
- MI Lab, Department of Circulation and Medical Imaging, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway
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12
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Larsen SB, Dehlendorff C, Skriver C, Dalton SO, Jespersen CG, Borre M, Brasso K, Nørgaard M, Johansen C, Sørensen HT, Hallas J, Friis S. Postdiagnosis Statin Use and Mortality in Danish Patients With Prostate Cancer. J Clin Oncol 2017; 35:3290-3297. [PMID: 28806117 DOI: 10.1200/jco.2016.71.8981] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Purpose Increasing evidence indicates that statin use may reduce mortality from prostate cancer. In this work, we examined whether postdiagnosis statin use was associated with reduced cancer-specific mortality or all-cause mortality among patients with prostate cancer in Denmark. Material and Methods From nationwide Danish registries, we identified all patients with incident prostate adenocarcinoma from 1998 to 2011 and retrieved data on tumor and patient characteristics, drug use, and primary treatment. We defined postdiagnosis use (two or more prescriptions) of statins as a time-varying covariate with 1-year lag. Cox proportional hazards regression models used to compute hazard ratios (HRs) for prostate cancer-specific mortality and all-cause mortality through 2013 associated with postdiagnosis statin use. In secondary and sensitivity analyses, we assessed statin use within exposure periods of 1 year or 5 years after prostate cancer diagnosis and evaluated the influence of prediagnosis statin use. Results Among 31,790 patients, 7,365 died of prostate cancer and 11,811 died from other causes during a median follow-up of 2.8 years (interquartile range, 1.3 to 5.1 years) from 1 year after diagnosis. Postdiagnosis statin use was associated with adjusted HRs of 0.83 (95% CI, 0.77 to 0.89) for prostate cancer mortality and 0.81 (95% CI, 0.76 to 0.85) for all-cause mortality. Similar results were observed in 1-year and 5-year sensitivity analyses. No substantial effect measure modification was found with estimated dose or type of statin, clinical stage, Gleason score, or with prediagnosis statin use; however, patients who were diagnosed early in the study period or who underwent radical prostatectomy or endocrine therapy exhibited slightly lower HRs for prostate cancer mortality with postdiagnosis statin use than did those in the overall analyses. Conclusion Postdiagnosis statin use was associated with reduced mortality from prostate cancer; however, it remains to be established whether this association is causal.
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Affiliation(s)
- Signe Benzon Larsen
- Signe Benzon Larsen, Christian Dehlendorff, Charlotte Skriver, Susanne Oksbjerg Dalton, Christoffer Johansen, and Søren Friis, Danish Cancer Society Research Center; Klaus Brasso and Christoffer Johansen, Copenhagen University Hospital; Søren Friis, University of Copenhagen, Copenhagen; Christina Gade Jespersen, Viborg Hospital, Viborg; Christina Gade Jespersen, Michael Borre, Mette Nørgaard, Henrik Toft Sørensen, and Søren Friis, Aarhus University Hospital, Aarhus; and Jesper Hallas, University of Southern Denmark, Odense, Denmark
| | - Christian Dehlendorff
- Signe Benzon Larsen, Christian Dehlendorff, Charlotte Skriver, Susanne Oksbjerg Dalton, Christoffer Johansen, and Søren Friis, Danish Cancer Society Research Center; Klaus Brasso and Christoffer Johansen, Copenhagen University Hospital; Søren Friis, University of Copenhagen, Copenhagen; Christina Gade Jespersen, Viborg Hospital, Viborg; Christina Gade Jespersen, Michael Borre, Mette Nørgaard, Henrik Toft Sørensen, and Søren Friis, Aarhus University Hospital, Aarhus; and Jesper Hallas, University of Southern Denmark, Odense, Denmark
| | - Charlotte Skriver
- Signe Benzon Larsen, Christian Dehlendorff, Charlotte Skriver, Susanne Oksbjerg Dalton, Christoffer Johansen, and Søren Friis, Danish Cancer Society Research Center; Klaus Brasso and Christoffer Johansen, Copenhagen University Hospital; Søren Friis, University of Copenhagen, Copenhagen; Christina Gade Jespersen, Viborg Hospital, Viborg; Christina Gade Jespersen, Michael Borre, Mette Nørgaard, Henrik Toft Sørensen, and Søren Friis, Aarhus University Hospital, Aarhus; and Jesper Hallas, University of Southern Denmark, Odense, Denmark
| | - Susanne Oksbjerg Dalton
- Signe Benzon Larsen, Christian Dehlendorff, Charlotte Skriver, Susanne Oksbjerg Dalton, Christoffer Johansen, and Søren Friis, Danish Cancer Society Research Center; Klaus Brasso and Christoffer Johansen, Copenhagen University Hospital; Søren Friis, University of Copenhagen, Copenhagen; Christina Gade Jespersen, Viborg Hospital, Viborg; Christina Gade Jespersen, Michael Borre, Mette Nørgaard, Henrik Toft Sørensen, and Søren Friis, Aarhus University Hospital, Aarhus; and Jesper Hallas, University of Southern Denmark, Odense, Denmark
| | - Christina Gade Jespersen
- Signe Benzon Larsen, Christian Dehlendorff, Charlotte Skriver, Susanne Oksbjerg Dalton, Christoffer Johansen, and Søren Friis, Danish Cancer Society Research Center; Klaus Brasso and Christoffer Johansen, Copenhagen University Hospital; Søren Friis, University of Copenhagen, Copenhagen; Christina Gade Jespersen, Viborg Hospital, Viborg; Christina Gade Jespersen, Michael Borre, Mette Nørgaard, Henrik Toft Sørensen, and Søren Friis, Aarhus University Hospital, Aarhus; and Jesper Hallas, University of Southern Denmark, Odense, Denmark
| | - Michael Borre
- Signe Benzon Larsen, Christian Dehlendorff, Charlotte Skriver, Susanne Oksbjerg Dalton, Christoffer Johansen, and Søren Friis, Danish Cancer Society Research Center; Klaus Brasso and Christoffer Johansen, Copenhagen University Hospital; Søren Friis, University of Copenhagen, Copenhagen; Christina Gade Jespersen, Viborg Hospital, Viborg; Christina Gade Jespersen, Michael Borre, Mette Nørgaard, Henrik Toft Sørensen, and Søren Friis, Aarhus University Hospital, Aarhus; and Jesper Hallas, University of Southern Denmark, Odense, Denmark
| | - Klaus Brasso
- Signe Benzon Larsen, Christian Dehlendorff, Charlotte Skriver, Susanne Oksbjerg Dalton, Christoffer Johansen, and Søren Friis, Danish Cancer Society Research Center; Klaus Brasso and Christoffer Johansen, Copenhagen University Hospital; Søren Friis, University of Copenhagen, Copenhagen; Christina Gade Jespersen, Viborg Hospital, Viborg; Christina Gade Jespersen, Michael Borre, Mette Nørgaard, Henrik Toft Sørensen, and Søren Friis, Aarhus University Hospital, Aarhus; and Jesper Hallas, University of Southern Denmark, Odense, Denmark
| | - Mette Nørgaard
- Signe Benzon Larsen, Christian Dehlendorff, Charlotte Skriver, Susanne Oksbjerg Dalton, Christoffer Johansen, and Søren Friis, Danish Cancer Society Research Center; Klaus Brasso and Christoffer Johansen, Copenhagen University Hospital; Søren Friis, University of Copenhagen, Copenhagen; Christina Gade Jespersen, Viborg Hospital, Viborg; Christina Gade Jespersen, Michael Borre, Mette Nørgaard, Henrik Toft Sørensen, and Søren Friis, Aarhus University Hospital, Aarhus; and Jesper Hallas, University of Southern Denmark, Odense, Denmark
| | - Christoffer Johansen
- Signe Benzon Larsen, Christian Dehlendorff, Charlotte Skriver, Susanne Oksbjerg Dalton, Christoffer Johansen, and Søren Friis, Danish Cancer Society Research Center; Klaus Brasso and Christoffer Johansen, Copenhagen University Hospital; Søren Friis, University of Copenhagen, Copenhagen; Christina Gade Jespersen, Viborg Hospital, Viborg; Christina Gade Jespersen, Michael Borre, Mette Nørgaard, Henrik Toft Sørensen, and Søren Friis, Aarhus University Hospital, Aarhus; and Jesper Hallas, University of Southern Denmark, Odense, Denmark
| | - Henrik Toft Sørensen
- Signe Benzon Larsen, Christian Dehlendorff, Charlotte Skriver, Susanne Oksbjerg Dalton, Christoffer Johansen, and Søren Friis, Danish Cancer Society Research Center; Klaus Brasso and Christoffer Johansen, Copenhagen University Hospital; Søren Friis, University of Copenhagen, Copenhagen; Christina Gade Jespersen, Viborg Hospital, Viborg; Christina Gade Jespersen, Michael Borre, Mette Nørgaard, Henrik Toft Sørensen, and Søren Friis, Aarhus University Hospital, Aarhus; and Jesper Hallas, University of Southern Denmark, Odense, Denmark
| | - Jesper Hallas
- Signe Benzon Larsen, Christian Dehlendorff, Charlotte Skriver, Susanne Oksbjerg Dalton, Christoffer Johansen, and Søren Friis, Danish Cancer Society Research Center; Klaus Brasso and Christoffer Johansen, Copenhagen University Hospital; Søren Friis, University of Copenhagen, Copenhagen; Christina Gade Jespersen, Viborg Hospital, Viborg; Christina Gade Jespersen, Michael Borre, Mette Nørgaard, Henrik Toft Sørensen, and Søren Friis, Aarhus University Hospital, Aarhus; and Jesper Hallas, University of Southern Denmark, Odense, Denmark
| | - Søren Friis
- Signe Benzon Larsen, Christian Dehlendorff, Charlotte Skriver, Susanne Oksbjerg Dalton, Christoffer Johansen, and Søren Friis, Danish Cancer Society Research Center; Klaus Brasso and Christoffer Johansen, Copenhagen University Hospital; Søren Friis, University of Copenhagen, Copenhagen; Christina Gade Jespersen, Viborg Hospital, Viborg; Christina Gade Jespersen, Michael Borre, Mette Nørgaard, Henrik Toft Sørensen, and Søren Friis, Aarhus University Hospital, Aarhus; and Jesper Hallas, University of Southern Denmark, Odense, Denmark
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13
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Masko EM, Alfaqih MA, Solomon KR, Barry WT, Newgard CB, Muehlbauer MJ, Valilis NA, Phillips TE, Poulton SH, Freedland AR, Sun S, Dambal SK, Sanders SE, Macias E, Freeman MR, Dewhirst MW, Pizzo SV, Freedland SJ. Evidence for Feedback Regulation Following Cholesterol Lowering Therapy in a Prostate Cancer Xenograft Model. Prostate 2017; 77:446-457. [PMID: 27900797 PMCID: PMC5822711 DOI: 10.1002/pros.23282] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 11/04/2016] [Indexed: 12/17/2022]
Abstract
BACKGROUND Epidemiologic data suggest cholesterol-lowering drugs may prevent the progression of prostate cancer, but not the incidence of the disease. However, the association of combination therapy in cholesterol reduction on prostate or any cancer is unclear. In this study, we compared the effects of the cholesterol lowering drugs simvastatin and ezetimibe alone or in combination on the growth of LAPC-4 prostate cancer in vivo xenografts. METHODS Proliferation assays were conducted by MTS solution and assessed by Student's t-test. 90 male nude mice were placed on a high-cholesterol Western-diet for 7 days then injected subcutaneously with 1 × 105 LAPC-4 cells. Two weeks post-injection, mice were randomized to control, 11 mg/kg/day simvastatin, 30 mg/kg ezetimibe, or the combination and sacrificed 42 days post-randomization. We used a generalized linear model with the predictor variables of treatment, time, and treatment by time (i.e., interaction term) with tumor volume as the outcome variable. Total serum and tumor cholesterol were measured. Tumoral RNA was extracted and cDNA synthesized from 1 ug of total RNA for quantitative real-time PCR. RESULTS Simvastatin directly reduced in vitro prostate cell proliferation in a dose-dependent, cell line-specific manner, but ezetimibe had no effect. In vivo, low continuous dosing of ezetimibe, delivered by food, or simvastatin, delivered via an osmotic pump had no effect on tumor growth compared to control mice. In contrast, dual treatment of simvastatin and ezetimibe accelerated tumor growth. Ezetimibe significantly lowered serum cholesterol by 15%, while simvastatin had no effect. Ezetimibe treatment resulted in higher tumor cholesterol. A sixfold induction of low density lipoprotein receptor mRNA was observed in ezetimibe and the combination with simvastatin versus control tumors. CONCLUSIONS Systemic cholesterol lowering by ezetimibe did not slow tumor growth, nor did the cholesterol independent effects of simvastatin and the combined treatment increased tumor growth. Despite lower serum cholesterol, tumors from ezetimibe treated mice had higher levels of cholesterol. This study suggests that induction of low density lipoprotein receptor is a possible mechanism of resistance that prostate tumors use to counteract the therapeutic effects of lowering serum cholesterol. Prostate 77:446-457, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Elizabeth M. Masko
- Division of Urologic Surgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina
| | - Mahmoud A. Alfaqih
- Division of Urologic Surgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina
| | - Keith R. Solomon
- Department of Orthopedic Surgery, Harvard Medical School, Boston, Massachusetts
| | - William T. Barry
- Department of Biostatistics and Bioinformatics, Duke University, Durham, North Carolina
| | - Christopher B. Newgard
- Sarah W. Stedman Nutrition and Metabolism Center, Duke University, Durham, North Carolina
| | - Michael J. Muehlbauer
- Sarah W. Stedman Nutrition and Metabolism Center, Duke University, Durham, North Carolina
| | - Nikolaos A. Valilis
- Division of Urologic Surgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina
| | - Tameika E. Phillips
- Division of Urologic Surgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina
| | - Susan H. Poulton
- Division of Urologic Surgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina
| | - Alexis R. Freedland
- Division of Urology, Department of Surgery, Cedars-Sinai Medical Center, Los Angeles, California
| | - Stephanie Sun
- Department of Surgery, Durham Veterans Administration Hospital, Durham, North Carolina
| | - Shweta K. Dambal
- Division of Urology, Department of Surgery, Cedars-Sinai Medical Center, Los Angeles, California
| | - Sergio E. Sanders
- Division of Urology, Department of Surgery, Cedars-Sinai Medical Center, Los Angeles, California
| | - Everardo Macias
- Division of Urologic Surgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina
- Division of Urology, Department of Surgery, Cedars-Sinai Medical Center, Los Angeles, California
| | - Michael R. Freeman
- Division of Urology, Department of Surgery, Cedars-Sinai Medical Center, Los Angeles, California
| | - Mark W. Dewhirst
- Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina
| | - Salvatore V. Pizzo
- Department of Pathology, Duke University Medical Center, Durham, North Carolina
| | - Stephen J. Freedland
- Division of Urology, Department of Surgery, Cedars-Sinai Medical Center, Los Angeles, California
- Department of Surgery, Durham Veterans Administration Hospital, Durham, North Carolina
- Correspondence to: Dr. Stephen Freedland, Division of Urology, Department of Surgery, Cedars Sinai Medical Center, 8635 West 3rd Street Suite 1070W, Los Angeles, CA 90048.
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14
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Boegemann M, Schlack K, Fischer AK, Gerß J, Steinestel J, Semjonow A, Schrader AJ, Krabbe LM. Influence of Statins on Survival Outcome in Patients with Metastatic Castration Resistant Prostate Cancer Treated with Abiraterone Acetate. PLoS One 2016; 11:e0161959. [PMID: 27583544 PMCID: PMC5008748 DOI: 10.1371/journal.pone.0161959] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2016] [Accepted: 08/15/2016] [Indexed: 01/01/2023] Open
Abstract
OBJECTIVE Even though the exact mechanism is largely unknown until now, statins are supposed to improve survival outcomes in various malignancies. For prostate cancer however, statins are known to compete with dehydroepiandrosterone (DHEAS) for the transport into the cytosol both using the cell by the Solute Carrier Transporter and thus diminish the cellular uptake of DHEAS as a precursor of androgens. Abiraterone inhibits CYP17A1 and thus effectively decreases the production of all relevant androgens including DHEAS. In this study we examined whether statins still affect survival outcome in patients with metastatic castration resistant prostate cancer (mCRPC) when treated with Abiraterone. PATIENTS AND METHODS 108 men with mCRPC treated with Abiraterone from 02/2010 to 07/2015 with (n = 21) or without (n = 87) concomitant treatment with statins were investigated. Progression free survival (PFS) and overall survival (OS) were analyzed using Kaplan-Meier-estimates and univariate Cox-regression analysis. The influence on best clinical benefit under Abiraterone treatment was analyzed with bivariate and multivariate logistic regression analysis. RESULTS PSA-decline ≥ 50% was not significantly different in both groups (57 vs. 53%; p = 0.73). The median PFS (9 vs. 10 months; p = 0.97) and OS (14 vs. 18 months; p = 0.77) did not differ significantly between those men treated with and without concomitant statin therapy, respectively. Accordingly, there was no improvement for best clinical benefit in patients using statins (odds ratio: 1.2 (CI: 0.4-4.2); p = 0.76). CONCLUSION Use of statins as concomitant medication did not improve survival outcomes or best clinical benefit in men with mCRPC treated with Abiraterone.
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Affiliation(s)
- Martin Boegemann
- Department of Urology, Muenster University Medical Center, Muenster, Germany
- * E-mail:
| | - Katrin Schlack
- Department of Urology, Muenster University Medical Center, Muenster, Germany
| | - Ann-Kathrin Fischer
- Department of Urology, Muenster University Medical Center, Muenster, Germany
| | - Joachim Gerß
- Institute of Biostatistics and Clinical Research of the Westfalian Wilhelms-University Muenster, Schmeddingstraße 56, D-48149 Muenster, Germany
| | - Julie Steinestel
- Department of Urology, Muenster University Medical Center, Muenster, Germany
| | - Axel Semjonow
- Department of Urology, Muenster University Medical Center, Muenster, Germany
| | - Andres Jan Schrader
- Department of Urology, Muenster University Medical Center, Muenster, Germany
| | - Laura-Maria Krabbe
- Department of Urology, Muenster University Medical Center, Muenster, Germany
- Department of Urology, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
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15
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Skriver C, Dehlendorff C, Borre M, Brasso K, Sørensen HT, Hallas J, Larsen SB, Tjønneland A, Friis S. Low-dose aspirin or other nonsteroidal anti-inflammatory drug use and prostate cancer risk: a nationwide study. Cancer Causes Control 2016; 27:1067-79. [PMID: 27503490 DOI: 10.1007/s10552-016-0785-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Accepted: 07/09/2016] [Indexed: 01/13/2023]
Abstract
PURPOSE Increasing evidence suggests that aspirin use may protect against prostate cancer. In a nationwide case-control study, using Danish high-quality registry data, we evaluated the association between the use of low-dose aspirin or other nonsteroidal anti-inflammatory drugs (NSAIDs) and the risk of prostate cancer. METHODS We identified 35,600 patients (cases) with histologically verified prostate cancer during 2000-2012. Cases were matched to 177,992 population controls on age and residence by risk-set sampling. Aspirin and nonaspirin NSAID exposure was defined by type, estimated dose, duration, and consistency of use. We used conditional logistic regression to estimate odds ratios (ORs), with 95 % confidence intervals (CIs), for prostate cancer associated with low-dose aspirin (75-150 mg) or nonaspirin NSAID use, adjusted for potential confounders. RESULTS Use of low-dose aspirin was associated with an OR for prostate cancer of 0.94 (95 % CI 0.91-0.97). Slightly lower ORs were seen with increasing cumulative amount, duration, and consistency of low-dose aspirin use (continuous use, ≥5 years: OR 0.89; 95 % CI 0.82-0.97; ≥10 years: OR 0.86; 95 % CI 0.70-1.06). Nonaspirin NSAID use was associated with a slightly increased OR for prostate cancer (1.13; 95 % CI 1.10-1.15); however, this association was confined to localized disease and did not vary materially with amount, duration, or consistency of nonaspirin NSAID use. CONCLUSIONS Our study indicates that long-term, consistent low-dose aspirin use may provide modest protection against prostate cancer. The slightly increased risk of only localized prostate cancer with nonaspirin NSAID use suggests a noncausal explanation of the observed association.
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Affiliation(s)
- Charlotte Skriver
- Danish Cancer Society Research Center, Danish Cancer Society, Strandboulevarden 49, 2100, Copenhagen Ø, Denmark.
| | - Christian Dehlendorff
- Danish Cancer Society Research Center, Danish Cancer Society, Strandboulevarden 49, 2100, Copenhagen Ø, Denmark
| | - Michael Borre
- Department of Urology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200, Aarhus N, Denmark
| | - Klaus Brasso
- Department of Urology, Copenhagen Prostate Cancer Center, Rigshospitalet, Blegdamsvej 9, 2100, Copenhagen Ø, Denmark
| | - Henrik Toft Sørensen
- Department of Clinical Epidemiology, Aarhus University Hospital, Olof Palmes Allé 43-45, 8200, Aarhus N, Denmark
| | - Jesper Hallas
- Clinical Pharmacology and Pharmacy, Department of Public Health, University of Southern Denmark, J. B. Winsløws Vej 19, 5000, Odense C, Denmark
| | - Signe Benzon Larsen
- Danish Cancer Society Research Center, Danish Cancer Society, Strandboulevarden 49, 2100, Copenhagen Ø, Denmark
| | - Anne Tjønneland
- Danish Cancer Society Research Center, Danish Cancer Society, Strandboulevarden 49, 2100, Copenhagen Ø, Denmark
| | - Søren Friis
- Danish Cancer Society Research Center, Danish Cancer Society, Strandboulevarden 49, 2100, Copenhagen Ø, Denmark
- Department of Clinical Epidemiology, Aarhus University Hospital, Olof Palmes Allé 43-45, 8200, Aarhus N, Denmark
- Department of Public Health, University of Copenhagen, Øster Farimagsgade 5, 1014, Copenhagen K, Denmark
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16
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Harshman LC, Wang X, Nakabayashi M, Xie W, Valenca L, Werner L, Yu Y, Kantoff AM, Sweeney CJ, Mucci LA, Pomerantz M, Lee GSM, Kantoff PW. Statin Use at the Time of Initiation of Androgen Deprivation Therapy and Time to Progression in Patients With Hormone-Sensitive Prostate Cancer. JAMA Oncol 2016; 1:495-504. [PMID: 26181260 DOI: 10.1001/jamaoncol.2015.0829] [Citation(s) in RCA: 107] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
IMPORTANCE Statin use has been associated with improved prostate cancer outcomes. Dehydroepiandrosterone sulfate (DHEAS) is a precursor of testosterone and a substrate for SLCO2B1, an organic anionic transporter. We previously demonstrated that genetic variants of SLCO2B1 correlated with time to progression (TTP) during receipt of androgen deprivation therapy (ADT). Statins also use SLCO2B1 to enter cells, and thus we hypothesized that they may compete with DHEAS uptake by the tumor cells. OBJECTIVE To evaluate whether statin use prolongs TTP during ADT for hormone-sensitive prostate cancer. DESIGN, SETTING, AND PARTICIPANTS In vitro studies were performed using prostate cancer cell lines at an academic, comprehensive cancer center. Statin use was retrospectively analyzed in 926 patients who had received ADT for biochemical or metastatic recurrence or de novo metastatic prostate cancer between January 1996 and November 2013. MAIN OUTCOMES AND MEASURES To determine whether statins interfere with DHEAS uptake, we performed in vitro studies using prostate cancer cell lines. Next, we queried our institutional clinical database to assess for an association between statin use and TTP during ADT using multivariable Cox regression analysis and adjusted for known prognostic factors. RESULTS In vitro, we demonstrated that statins block DHEAS uptake by competitively binding to SLCO2B1. In our ADT cohort of 926 patients, 283 (31%) were taking a statin at ADT initiation. After a median follow-up of 5.8 years, 644 patients (70%) had experienced disease progression while receiving ADT. Median TTP during ADT was 20.3 months (95% CI, 18-24 months). Men taking statins had a longer median TTP during ADT compared with nonusers (27.5 [95% CI, 21.1-37.7] vs 17.4 [95% CI, 14.9-21.1] months; P < .001). The association remained statistically significant after adjusting for predefined prognostic factors (adjusted hazard ratio, 0.83 [95% CI, 0.69-0.99]; P = .04). The positive statin effect was observed for both patients with and without metastases (adjusted hazard ratio, 0.79 [95% CI, 0.58-1.07] for M0 disease and 0.84 [95% CI, 0.67-1.06] for M1 disease; P for interaction = .72). CONCLUSIONS AND RELEVANCE Statin use at the time of ADT initiation was associated with a significantly longer TTP during ADT even after adjustment for known prognostic factors. Our in vitro finding that statins competitively reduce DHEAS uptake, thus effectively decreasing the available intratumoral androgen pool, affords a plausible mechanism to support the clinical observation of prolonged TTP in statin users.
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Affiliation(s)
- Lauren C Harshman
- Lank Center for Genitourinary Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Xiaodong Wang
- Gelb Center for Translational Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Mari Nakabayashi
- Lank Center for Genitourinary Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Wanling Xie
- Department of Biostatistics and Computational Biology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Loana Valenca
- Lank Center for Genitourinary Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Lillian Werner
- Department of Biostatistics and Computational Biology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Yongjiang Yu
- Gelb Center for Translational Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts4Department of Urology, Shanghai Jiao Tong University School of Medicine, Xinhua Hospital, Shanghai, China
| | | | - Christopher J Sweeney
- Lank Center for Genitourinary Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Lorelei A Mucci
- Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts
| | - Mark Pomerantz
- Lank Center for Genitourinary Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Gwo-Shu Mary Lee
- Gelb Center for Translational Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Philip W Kantoff
- Lank Center for Genitourinary Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts2Gelb Center for Translational Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
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17
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Simultaneous treatment with statins and aspirin reduces the risk of prostate cancer detection and tumorigenic properties in prostate cancer cell lines. BIOMED RESEARCH INTERNATIONAL 2015; 2015:762178. [PMID: 25649906 PMCID: PMC4306438 DOI: 10.1155/2015/762178] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Accepted: 09/18/2014] [Indexed: 01/05/2023]
Abstract
Nowadays prostate cancer is the most common solid tumor in men from industrialized countries and the second leading cause of death. At the ages when PCa is usually diagnosed, mortality related to cardiovascular morbidity is high; therefore, men at risk for PCa frequently receive chronic lipid-lowering and antiplatelet treatment. The aim of this study was to analyze how chronic treatment with statins, aspirin, and their combination influenced the risk of PCa detection. The tumorigenic properties of these treatments were evaluated by proliferation, colony formation, invasion, and migration assays using different PCa cell lines, in order to assess how these treatments act at molecular level. The results showed that a combination of statins and aspirin enhances the effect of individual treatments and seems to reduce the risk of PCa detection (OR: 0.616 (95% CI: 0.467-0.812), P<0.001). However, if treatments are maintained, aspirin (OR: 1.835 (95% CI: 1.068-3.155), P=0.028) or the combination of both drugs (OR: 3.059 (95% CI: 1.894-4.939), P<0.001) represents an increased risk of HGPCa. As observed at clinical level, these beneficial effects in vitro are enhanced when both treatments are administered simultaneously, suggesting that chronic, concomitant treatment with statins and aspirin has a protective effect on PCa incidence.
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18
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Bläuer M, Sand J, Laukkarinen J. Cryopreserved mouse pancreatic acinar cells from long-term explant outgrowth cultures maintain their secretory phenotype after thawing. Pancreatology 2013; 13:610-4. [PMID: 24280578 DOI: 10.1016/j.pan.2013.09.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Revised: 09/13/2013] [Accepted: 09/28/2013] [Indexed: 12/11/2022]
Abstract
BACKGROUND/OBJECTIVES We recently reported an explant outgrowth culture method for obtaining functionally competent mouse pancreatic acinar cells for long-term in vitro purposes. The aim of the present study was to explore the possibility of cryostoring these cells without loss of functional differentiation. METHODS Acinar cells prepared by the explant outgrowth method were cryopreserved using a DMSO-based protocol and stored in liquid nitrogen for 4 weeks. The following characteristics were compared in cryopreserved and parallel non-frozen cell preparations: cell viability and recovery, amylase content in viable cells before culture, basal and stimulated amylase release in culture and the ability of the cells to form glandular structures in Matrigel. RESULTS Immediate post-thaw viability of the cells was similar to that of freshly isolated cells. Approximately 53% of viable cells frozen were recovered after thawing. Intracellular amylase content was identical in frozen and non-frozen cells. Cryopreserved cells maintained their ability to secrete amylase and to respond to caerulein stimulation in 4-day secondary cultures. They also were observed to form amylase-expressing glandular structures in three-dimensional cultures in Matrigel in a similar manner as non-frozen cells. CONCLUSIONS This study shows that pancreatic acinar cells can be cryopreserved for long-term storage in liquid nitrogen without dedifferentiation. Successful cryopreservation helps to refine the experimental use of primary acinar cells by enabling their banking for on-demand utilization.
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Affiliation(s)
- Merja Bläuer
- Department of Gastroenterology and Alimentary Tract Surgery and Tampere Pancreas Laboratory, Tampere University Hospital, Teiskontie 35, FIN-33521 Tampere, Finland
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Veitonmäki T, Tammela TLJ, Auvinen A, Murtola TJ. Use of aspirin, but not other non-steroidal anti-inflammatory drugs is associated with decreased prostate cancer risk at the population level. Eur J Cancer 2012; 49:938-45. [PMID: 23079475 DOI: 10.1016/j.ejca.2012.09.030] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2012] [Revised: 09/20/2012] [Accepted: 09/22/2012] [Indexed: 12/11/2022]
Abstract
The cyclooxygenase 2 (COX-2) enzyme overexpression in prostate cancer has led to the hypothesis that COX-2 inhibition may reduce prostate cancer growth. Some previous studies have linked the usage of COX-2 inhibiting non-steroidal anti-inflammatory drugs (NSAIDs) with a decreased prostate cancer risk. We estimated the association between cumulative COX-2 inhibition by NSAID usage and prostate cancer risk at population level. All new prostate cancer cases in Finland during 1995-2002 and matched controls (24,657 case-control pairs) were identified from national registries. Detailed information on medication purchases was obtained from a national prescription database. A total cumulative COX-2 inhibition value was calculated based on total cumulative mg amount of each NSAID drug and the drug-specific COX-1/COX-2 inhibition ratio. Prostate cancer risk was analysed with propensity score-matched conditional logistic regression model. In total, 53.8% of the cases and 46.5% of the controls had any prescription-use of NSAIDs, while 8.1% and 7.9%, respectively, had used aspirin. Compared to the non-users, any NSAID use was associated with an elevated overall prostate cancer risk (46.4% versus 53.6%, respectively; odds ratio [OR] 1.3, 95% confidence interval [CI] 1.3, 1.4) and risk of advanced cancer (11.8% versus 14.1%; OR 1.6, 95% CI 1.5, 1.8). The risk remained elevated despite the amount of cumulative COX-2 inhibition. In a separate analysis, the risk increase was similar for each NSAID with the exception of aspirin, which was associated with a decreased overall prostate cancer risk (OR 0.90, 95% CI 0.84, 0.96) in a dose-dependent fashion. NSAID use is associated with an increased prostate cancer risk at the population level regardless of the COX-2 inhibition. This may be explained by systematic differences between prescription NSAID users and non-users. In contrast, aspirin use is associated with a decreased overall prostate cancer risk. Further studies on aspirin and prostate cancer will be needed.
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Affiliation(s)
- Thea Veitonmäki
- School of Health Sciences, University of Tampere, Tampere, Finland
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Bansal D, Undela K, D'Cruz S, Schifano F. Statin use and risk of prostate cancer: a meta-analysis of observational studies. PLoS One 2012; 7:e46691. [PMID: 23049713 PMCID: PMC3462187 DOI: 10.1371/journal.pone.0046691] [Citation(s) in RCA: 158] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Accepted: 09/04/2012] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Emerging evidence suggests that statins may decrease the risk of cancers. However, available evidence on prostate cancer (PCa) is conflicting. We therefore examined the association between statin use and risk of PCa by conducting a detailed meta-analysis of all observational studies published regarding this subject. METHODS Literature search in PubMed database was undertaken through February 2012 looking for observational studies evaluating the association between statin use and risk of PCa. Before meta-analysis, the studies were evaluated for publication bias and heterogeneity. Pooled relative risk (RR) estimates and 95% confidence intervals (CIs) were calculated using random-effects model (DerSimonian and Laird method). Subgroup analyses, sensitivity analysis and cumulative meta-analysis were also performed. RESULTS A total of 27 (15 cohort and 12 case-control) studies contributed to the analysis. There was heterogeneity among the studies but no publication bias. Statin use significantly reduced the risk of both total PCa by 7% (RR 0.93, 95% CI 0.87-0.99, p = 0.03) and clinically important advanced PCa by 20% (RR 0.80, 95% CI 0.70-0.90, p<0.001). Long-term statin use did not significantly affect the risk of total PCa (RR 0.94, 95% CI 0.84-1.05, p = 0.31). Stratification by study design did not substantially influence the RR. Furthermore, sensitivity analysis confirmed the stability of results. Cumulative meta-analysis showed a change in trend of reporting risk from positive to negative in statin users between 1993 and 2011. CONCLUSIONS Our meta-analysis provides evidence supporting the hypothesis that statins reduce the risk of both total PCa and clinically important advanced PCa. Further research is needed to confirm these findings and to identify the underlying biological mechanisms.
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Affiliation(s)
- Dipika Bansal
- Department of Pharmacy Practice, National Institute of Pharmaceutical Education and Research, SAS Nagar, Mohali, Punjab, India.
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21
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Facchetti G, Zampieri M, Altafini C. Predicting and characterizing selective multiple drug treatments for metabolic diseases and cancer. BMC SYSTEMS BIOLOGY 2012; 6:115. [PMID: 22932283 PMCID: PMC3744170 DOI: 10.1186/1752-0509-6-115] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Accepted: 08/13/2012] [Indexed: 12/13/2022]
Abstract
BACKGROUND In the field of drug discovery, assessing the potential of multidrug therapies is a difficult task because of the combinatorial complexity (both theoretical and experimental) and because of the requirements on the selectivity of the therapy. To cope with this problem, we have developed a novel method for the systematic in silico investigation of synergistic effects of currently available drugs on genome-scale metabolic networks. RESULTS The algorithm finds the optimal combination of drugs which guarantees the inhibition of an objective function, while minimizing the side effect on the other cellular processes. Two different applications are considered: finding drug synergisms for human metabolic diseases (like diabetes, obesity and hypertension) and finding antitumoral drug combinations with minimal side effect on the normal human cell. The results we obtain are consistent with some of the available therapeutic indications and predict new multiple drug treatments. A cluster analysis on all possible interactions among the currently available drugs indicates a limited variety on the metabolic targets for the approved drugs. CONCLUSION The in silico prediction of drug synergisms can represent an important tool for the repurposing of drugs in a realistic perspective which considers also the selectivity of the therapy. Moreover, for a more profitable exploitation of drug-drug interactions, we have shown that also experimental drugs which have a different mechanism of action can be reconsider as potential ingredients of new multicompound therapeutic indications. Needless to say the clues provided by a computational study like ours need in any case to be thoroughly evaluated experimentally.
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Affiliation(s)
- Giuseppe Facchetti
- Statistical and Biological Physics Department, SISSA (International School for Advanced Studies), Via Bonomea 265 - 34136, Trieste, Italy
| | - Mattia Zampieri
- Institute of Molecular Systems Biology, ETH (Eidgenoessische Technische Hochschule), Wolfgang Pauli Str. 16 - 8093, Zurich, Switzerland
| | - Claudio Altafini
- Functional Analysis DepartmentSISSA (International School for Advanced Studies), , Via Bonomea 265 - 34136, Trieste, Italy
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Murtola TJ, Syvälä H, Pennanen P, Bläuer M, Solakivi T, Ylikomi T, Tammela TLJ. The importance of LDL and cholesterol metabolism for prostate epithelial cell growth. PLoS One 2012; 7:e39445. [PMID: 22761797 PMCID: PMC3384647 DOI: 10.1371/journal.pone.0039445] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2011] [Accepted: 05/21/2012] [Indexed: 01/02/2023] Open
Abstract
Cholesterol-lowering treatment has been suggested to delay progression of prostate cancer by decreasing serum LDL. We studied in vitro the effect of extracellular LDL-cholesterol on the number of prostate epithelial cells and on the expression of key regulators of cholesterol metabolism. Two normal prostatic epithelial cell lines (P96E, P97E), two in vitro immortalized epithelial cell lines (PWR-1E, RWPE-1) and two cancer cell lines (LNCaP and VCaP) were grown in cholesterol-deficient conditions. Cells were treated with 1-50 µg/ml LDL-cholesterol and/or 100 nM simvastatin for seven days. Cell number relative to control was measured with crystal violet staining. Changes in mRNA and protein expression of key effectors in cholesterol metabolism (HMGCR, LDLR, SREBP2 and ABCA1) were measured with RT-PCR and immunoblotting, respectively. LDL increased the relative cell number of prostate cancer cell lines, but reduced the number of normal epithelial cells at high concentrations. Treatment with cholesterol-lowering simvastatin induced up to 90% reduction in relative cell number of normal cell lines but a 15-20% reduction in relative number of cancer cells, an effect accompanied by sharp upregulation of HMGCR and LDLR. These effects were prevented by LDL. Compared to the normal cells, prostate cancer cells showed high expression of cholesterol-producing HMGCR but failed to express the major cholesterol exporter ABCA1. LDL increased relative cell number of cancer cell lines, and these cells were less vulnerable than normal cells to cholesterol-lowering simvastatin treatment. Our study supports the importance of LDL for prostate cancer cells, and suggests that cholesterol metabolism in prostate cancer has been reprogrammed to increased production in order to support rapid cell growth.
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Affiliation(s)
- Teemu J Murtola
- School of Medicine, University of Tampere, Tampere, Finland.
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Menter DG, Ramsauer VP, Harirforoosh S, Chakraborty K, Yang P, Hsi L, Newman RA, Krishnan K. Differential effects of pravastatin and simvastatin on the growth of tumor cells from different organ sites. PLoS One 2011; 6:e28813. [PMID: 22216116 PMCID: PMC3245236 DOI: 10.1371/journal.pone.0028813] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2011] [Accepted: 11/15/2011] [Indexed: 12/13/2022] Open
Abstract
3-hydroxy-3-methylglutaryl coenzyme A reductase (HMGCR) inhibitors, commonly known as statins, may possess cancer preventive and therapeutic properties. Statins are effective suppressors of cholesterol synthesis with a well-established risk-benefit ratio in cardiovascular disease prevention. Mechanistically, targeting HMGCR activity primarily influences cholesterol biosynthesis and prenylation of signaling proteins. Pravastatin is a hydrophilic statin that is selectively taken up by a sodium-independent organic anion transporter protein-1B1 (OATP1B1) exclusively expressed in liver. Simvastatin is a hydrophobic statin that enters cells by other mechanisms. Poorly-differentiated and well-differentiated cancer cell lines were selected from various tissues and examined for their response to these two statins. Simvastatin inhibited the growth of most tumor cell lines more effectively than pravastatin in a dose dependent manner. Poorly-differentiated cancer cells were generally more responsive to simvastatin than well-differentiated cancer cells, and the levels of HMGCR expression did not consistently correlate with response to statin treatment. Pravastatin had a significant effect on normal hepatocytes due to facilitated uptake and a lesser effect on prostate PC3 and colon Caco-2 cancer cells since the OATP1B1 mRNA and protein were only found in the normal liver and hepatocytes. The inhibition of cell growth was accompanied by distinct alterations in mitochondrial networks and dramatic changes in cellular morphology related to cofilin regulation and loss of p-caveolin. Both statins, hydrophilic pravastatin and hypdrophobic simvastatin caused redistribution of OATP1B1 and HMGCR to perinuclear sites. In conclusion, the specific chemical properties of different classes of statins dictate mechanistic properties which may be relevant when evaluating biological responses to statins.
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Affiliation(s)
- David G. Menter
- Department of Cancer Biology, The University of Texas, M.D. Anderson Cancer Center, Houston, Texas, United States of America
| | - Victoria P. Ramsauer
- Department of Pharmaceutical Sciences, East Tennessee State University, Bill Gatton College of Pharmacy, Johnson City, Tennessee, United States of America
- Division of Hematology-Oncology, Department of Internal Medicine, East Tennessee State University, Johnson City, Tennessee, United States of America
| | - Sam Harirforoosh
- Department of Pharmaceutical Sciences, East Tennessee State University, Bill Gatton College of Pharmacy, Johnson City, Tennessee, United States of America
| | - Kanishka Chakraborty
- Division of Hematology-Oncology, Department of Internal Medicine, East Tennessee State University, Johnson City, Tennessee, United States of America
| | - Peiying Yang
- Department of Experimental Therapeutics, The University of Texas, M.D. Anderson Cancer Center, Houston, Texas, United States of America
| | - Linda Hsi
- Department of Cell Biology, The Cleveland Clinic, Cleveland, Ohio, United States of America
- Department of Clinical Cancer Prevention. The University of Texas, M.D. Anderson Cancer Center, Houston, Texas, United States of America
| | - Robert A. Newman
- Department of Experimental Therapeutics, The University of Texas, M.D. Anderson Cancer Center, Houston, Texas, United States of America
| | - Koyamangalath Krishnan
- Division of Hematology-Oncology, Department of Internal Medicine, East Tennessee State University, Johnson City, Tennessee, United States of America
- * E-mail:
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Murtola TJ, Syvälä H, Pennanen P, Bläuer M, Solakivi T, Ylikomi T, Tammela TL. Comparative effects of high and low-dose simvastatin on prostate epithelial cells: The role of LDL. Eur J Pharmacol 2011; 673:96-100. [DOI: 10.1016/j.ejphar.2011.10.022] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2011] [Revised: 10/03/2011] [Accepted: 10/11/2011] [Indexed: 12/31/2022]
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Wright JL, Lin DW, Stanford JL. The effect of demographic and clinical factors on the relationship between BMI and PSA levels. Prostate 2011; 71:1631-7. [PMID: 21432865 PMCID: PMC3409087 DOI: 10.1002/pros.21380] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2010] [Accepted: 02/17/2011] [Indexed: 02/03/2023]
Abstract
INTRODUCTION Studies have reported lower prostate specific antigen (PSA) levels in men with a higher body mass index (BMI). Additional factors such as diabetes mellitus, benign prostatic hyperplasia (BPH) and certain medications may also affect PSA levels and confound the PSA-BMI association. In this study we evaluated the potential confounding effect of these factors on the obesity-PSA relationship and evaluated the association between these factors and PSA level. METHODS The study cohort consisted of 770 population-based controls without a history of prostate cancer (PCa) who participated in a prior PCa study. Demographic, anthropometric, and medical history data were obtained, and PSA level was determined from blood drawn at the time of interview. Linear regression was performed to evaluate the PSA-BMI relationship, adjusting for potential confounders. Finally, a forward stepwise algorithm was used to determine which factors were independently associated with PSA values. RESULTS With increase in BMI (<25, 25-29, ≥30), the geometric mean PSA level declined (1.18, 1.13, and 0.94, respectively); obese men had a 17% (95% CI 0.70-0.99) lower age-adjusted PSA level compared to normal weight men. However, this relationship was non-significant (P = 0.17) in the multivariate model. Independent predictors of PSA level included age (β = 1.03, 95% CI 1.02-1.04), history of BPH (β = 1.48, 95% CI 1.27-1.72), current statin (β = 0.85, 95% CI 0.74-0.98), and NSAID use (β = 0.84, 95% CI 0.72-0.98). CONCLUSION The relationship between obesity and PSA is confounded by a number of factors, which likely explain the observed inverse association previously reported. These results should help in interpreting PSA values in men screened for PCa.
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Affiliation(s)
- Jonathan L Wright
- Department of Urology, University of Washington School of Medicine, Seattle, Washington 98195, USA.
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Moyad MA, Klotz LH. Statin Clinical Trial (REALITY) for prostate cancer: an over 15-year wait is finally over thanks to a dietary supplement. Urol Clin North Am 2011; 38:325-31. [PMID: 21798395 DOI: 10.1016/j.ucl.2011.05.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Support for a prescription statin clinical trial for the prevention or treatment of prostate cancer has been lacking, although recent data have provoked interest in such a study. The authors have initiated a pilot trial of red yeast rice (RYR) extract and prostate cancer. RYR significantly reduces low-density lipoprotein and is an option for statin-intolerant patients. RYR appears to be an adequate proxy for some statins as long as quality control is monitored. The REALITY (REduction in Active surveillance Lipid Indices Through Yeast of red rice) trial will be conducted in Toronto, Canada.
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Affiliation(s)
- Mark A Moyad
- Department of Urology, University of Michigan Medical Center, 1500 East Medical Center Drive , Ann Arbor, MI 48109-0330, USA.
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Lovastatin Causes Diminished PSA Secretion by Inhibiting AR Expression and Function in LNCaP Prostate Cancer Cells. Urology 2011; 77:1508.e1-7. [DOI: 10.1016/j.urology.2010.12.074] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2010] [Revised: 11/25/2010] [Accepted: 12/29/2010] [Indexed: 11/22/2022]
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Tan N, Klein EA, Li J, Moussa AS, Jones JS. Statin use and risk of prostate cancer in a population of men who underwent biopsy. J Urol 2011; 186:86-90. [PMID: 21571344 DOI: 10.1016/j.juro.2011.03.004] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2010] [Indexed: 01/28/2023]
Abstract
PURPOSE We determined the association between statin use and prostate cancer in men who underwent prostate biopsy. MATERIALS AND METHODS We performed a retrospective cohort study of men who underwent prostate biopsy from 2000 to 2007 at Cleveland Clinic. Statin use was determined using outpatient pharmacy records, and clinical and pathological outcomes were obtained. Multivariate logistic regression analysis to determine the effects of statins (and duration of use) was performed after adjusting for age, body mass index, African-American race, number of cores taken and prostate volume. RESULTS We analyzed data from 4,204 patients, and we identified 3,182 (75.7%) not on statins and 1,022 on statins. Men diagnosed with prostate cancer on statins compared to those not taking statins were less likely to have digital rectal examination positivity (5.3% vs 8.9%, OR 0.7, p <0.01), Gleason score 7 or greater prostate cancer (61.4% vs 72.4%, OR 0.78, p = 0.02) and high volume prostate cancer (27.2 vs 31.4, p <0.01). Moreover statin users had lower prostate specific antigen compared to nonstatin users (5.13 vs 5.98, p = 0.03). Multivariate analysis adjusted risk ratios for prostate cancer diagnosis, high grade prostate cancer (Gleason score 7 or greater) and 3 or more cores positive in statin users were 0.92 (95% CI 0.85-0.98), 0.76 (95% CI 0.67-0.85) and 0.86 (95% CI 0.75-0.97) and only high grade prostate cancer persisted with length of use. CONCLUSIONS Statin use was associated with a decreased risk of prostate cancer, less frequent high grade prostate cancer and lower volume of prostate cancer, suggesting that statin use has a protective effect against prostate cancer.
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Affiliation(s)
- Nelly Tan
- Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, Ohio, USA.
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Murtola TJ. Statin use is associated with improved prostate cancer survival: is it time for a clinical trial? Expert Rev Anticancer Ther 2011; 10:1563-7. [PMID: 20942627 DOI: 10.1586/era.10.137] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Recent studies have reported an inverse association between statin use and risk of advanced prostate cancer. Thus, it is possible that statin exposure delays progression of prostate tumors to an advanced stage. The study by Gutt and colleagues gives two important contributions to this field of research. With a cohort of 691 men undergoing curative-intent radiation therapy for prostate cancer between 1996 and 2008, and with a median follow-up of 50 months, they demonstrate that statin use is associated with improved relapse-free survival. The result supports the idea that statins could delay prostate cancer progression. In addition, they demonstrate that low low-density lipoprotein levels are associated with improved relapse-free survival, supporting the idea that the prostate cancer progression-preventing effects of statins could be, at least in part, mediated by their systemic low-density lipoprotein-lowering effect. The study adds to the growing body of evidence on statins' benefits against prostate cancer. The results have important implications when designing possible future clinical studies on this topic.
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Affiliation(s)
- Teemu J Murtola
- Department of Surgery, Central Finland Central Hospital, Jyväskylä, Finland and University of Tampere School of Public Health, University of Tampere, FIN-33014, Finland.
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Papadopoulos G, Delakas D, Nakopoulou L, Kassimatis T. Statins and prostate cancer: molecular and clinical aspects. Eur J Cancer 2011; 47:819-30. [PMID: 21354784 DOI: 10.1016/j.ejca.2011.01.005] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2010] [Revised: 12/18/2010] [Accepted: 01/19/2011] [Indexed: 01/05/2023]
Abstract
The field of the potential applications of 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase inhibitors (statins) beyond their unambiguous cardiovascular beneficial effects is steadily increasing. In this regard, statins have also been shown to possess anti-inflammatory, immunomodulatory, antioxidant and growth inhibitory properties. Regarding their role in carcinogenesis, both preclinical and clinical studies report conflicting results. Intriguingly, accumulating evidence suggests that statins may relate to decreased prostate cancer incidence and recurrence risk. However, data from clinical studies seem to be still weak and are confounded by several factors. Nonetheless, preclinical data suggest that statins might exert a chemopreventive role against prostate cancer by inhibiting the proliferation and inducing apoptosis of prostate cancer cells and also inhibiting angiogenesis, inflammation and metastasis. Cholesterol lowering as well as statin pleiotropy through inhibition of the synthesis of isoprenoids have both been implicated in their anticancer properties. In this review, we discuss the preclinical and clinical evidence supporting the preventive or potentially harmful effects of statins on prostate tumourigenesis and conclude that statins should not be recommended for the prevention of prostate cancer development or progression based on the current data.
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Yokomizo A, Shiota M, Kashiwagi E, Kuroiwa K, Tatsugami K, Inokuchi J, Takeuchi A, Naito S. Statins reduce the androgen sensitivity and cell proliferation by decreasing the androgen receptor protein in prostate cancer cells. Prostate 2011; 71:298-304. [PMID: 20717902 DOI: 10.1002/pros.21243] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2010] [Accepted: 07/12/2010] [Indexed: 02/03/2023]
Abstract
BACKGROUND Statins (3-hydroxy-3-methyl-glutaryl-coenzyme A reductase inhibitors) are cholesterol-lowering drugs that are widely used to prevent and treat atherosclerotic cardiovascular disease. Recent epidemiological studies suggest that statins reduce serum prostate-specific antigen (PSA) levels and decrease the risk of prostate cancer. In the present study, we determined the molecular mechanisms related to the regulation of PSA, androgen receptor (AR) and cell proliferation in prostate cancer cell lines by statins. METHODS Western blotting, quantitative real-time polymerase chain reaction, cytotoxicity analysis and a cell proliferation assay were used to resolve the regulatory role of statins (mevastatin and simvastatin) in three prostate cancer cell lines, RWPE-1, 22Rv1, and LNCaP. RESULTS Western blotting revealed that both mevastatin and simvastatin downregulated AR and PSA protein. However, these statins did not downregulate AR mRNA expression, while they decreased PSA mRNA. The protease inhibitor MG132 inhibited the downregulation of AR protein which suggested that statins decreased AR protein levels by increasing AR proteolysis. Furthermore, statins reduced cell proliferation in AR positive cells but not in AR negative cells, suggesting that statins regulate cell proliferation via AR expression. In addition, cell proliferation assay at various concentrations of dihydrotestosterone (DHT) showed that statins decreased androgen sensitivity in LNCaP cells. CONCLUSIONS Statins decreased AR protein by proteolysis but not mRNA transcription. The drop in AR levels resulted in a reduction in androgen sensitivity and a decrease in cell proliferation in AR positive prostate cancer cells.
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Affiliation(s)
- Akira Yokomizo
- Department of Urology, Graduate School of Medical Sciences, Kyushu University, Higashi-ku, Fukuoka, Japan.
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Kochuparambil ST, Al-Husein B, Goc A, Soliman S, Somanath PR. Anticancer efficacy of simvastatin on prostate cancer cells and tumor xenografts is associated with inhibition of Akt and reduced prostate-specific antigen expression. J Pharmacol Exp Ther 2010; 336:496-505. [PMID: 21059805 DOI: 10.1124/jpet.110.174870] [Citation(s) in RCA: 98] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Prostate cancer is the second-leading cause of cancer-associated death among men in the United States. There has been renewed interest in the potential therapeutic benefits of statins for cancer. Simvastatin, a widely used generic drug for preventing cardiovascular events, is well known for its effects on cellular proliferation and inflammation, two key processes that also determine the rate of tumor growth. Although a growing body of evidence suggests that statins have the potential to reduce the risk of many cancers, there are discrepancies over the pro- and anticancer effects of statins. In the current study, we sought to investigate the effects of simvastatin on the Akt pathway in prostate cancer cells with respect to the regulation of various cell functions in vitro and tumor growth in vivo. Time- and dose-dependent effects of simvastatin on LNCaP (androgen-dependent) and PC3 (androgen-independent) cells indicate that treatment with simvastatin at concentrations as low as 25 μM was sufficient to inhibit serum-stimulated Akt activity. Akin to this, treatment with simvastatin significantly inhibited serum-induced cell migration, invasion, colony formation, and proliferation. Simvastatin-mediated effects on colony formation were rescued by adenovirus-mediated expression of constitutively active Akt (myristoylated Akt) in PC3 cell lines. A PC3 xenograft model performed in nude mice exhibited reduced tumor growth with simvastatin treatment associated with decreased Akt activity and reduced prostate-specific antigen (PSA) levels. Our findings demonstrate the therapeutic benefits of simvastatin for prostate cancer and suggest a link between simvastatin, regulation of Akt activity, and PSA expression in prostate tumors.
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Affiliation(s)
- Samith T Kochuparambil
- Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia, Augusta, Georgia 30912, USA
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Murtola TJ, Tammela TLJ, Määttänen L, Huhtala H, Platz EA, Ala-Opas M, Stenman UH, Auvinen A. Prostate cancer and PSA among statin users in the Finnish prostate cancer screening trial. Int J Cancer 2010; 127:1650-9. [PMID: 20073066 DOI: 10.1002/ijc.25165] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Decreased risk of advanced prostate cancer has been reported among men using statins. However, the evidence on overall prostate cancer risk is conflicting. We compared the relative risk between current users and non-users of statins or other cholesterol-lowering medications in a population undergoing systematical prostate cancer screening. The study cohort comprised of 23,320 men participating in the screening arm of the Finnish prostate cancer screening trial during 1996-2004. Information on medication use was obtained from a comprehensive national prescription database. Cox proportional hazards regression was used to calculate multivariable adjusted hazard ratios (HRs) for prostate cancer. Serum prostate-specific antigen (PSA) level was compared between current users and non-users of cholesterol-lowering drugs. Compared with medication non-users, the overall prostate cancer incidence was decreased among statin users [HR 0.75, 95% confidence interval (CI) 0.63-0.89]. The inverse association was dose-dependent with cumulative amount of statin use, and strongest for low-grade and early stage tumors. The incidence was nonsignificantly lower also among users of other types of cholesterol-lowering drugs (HR 0.62, 95% CI 0.28-1.38), but without dose-dependence. Age-adjusted median serum PSA tended to be lower among users of cholesterol-lowering drugs, but the relative risk decrease among statin users was not related to decreased PSA. Overall incidence of prostate cancer was lowered among statin users when bias due to differential PSA testing between medication users and non-users was eliminated by systematical prostate cancer screening. Cholesterol-lowering with statins seems beneficial for prostate cancer prevention.
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Affiliation(s)
- Teemu J Murtola
- Department of Epidemiology, University of Tampere, School of Public Health, Tampere, Finland.
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Current Opinion in Endocrinology, Diabetes & Obesity. Current world literature. Curr Opin Endocrinol Diabetes Obes 2010; 17:293-312. [PMID: 20418721 DOI: 10.1097/med.0b013e328339f31e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Loeb S, Kan D, Helfand BT, Nadler RB, Catalona WJ. Is statin use associated with prostate cancer aggressiveness? BJU Int 2009; 105:1222-5. [PMID: 19888973 DOI: 10.1111/j.1464-410x.2009.09007.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
OBJECTIVE To further examine the association between statins (3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitors) and pathological features in a large group of patients undergoing radical prostatectomy (RP), as epidemiological studies have suggested that statins, in addition to their beneficial cardiovascular effects, might reduce the risk of aggressive prostate cancer. PATIENTS AND METHODS From 2003 to 2009, 1351 men with data on preoperative statin use had RP by one surgeon. The clinical and pathological tumour features were compared between 504 users of statins and 847 who were not users. RESULTS Statin users were significantly older and had a higher mean body mass index than non-users. The preoperative serum prostate-specific antigen levels, tumour volume and percentage of cancer in the RP specimen were significantly lower in patients taking statins. Overall, statin users had a proportionately lower rate of adverse tumour pathology features, including a significantly lower risk of positive (cancerous) surgical margins. CONCLUSION Our results suggest that the use of statins might be associated with more favourable pathological features at RP. The long-term disease-specific outcomes and the underlying link between statins and prostate cancer require further investigation.
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Affiliation(s)
- Stacy Loeb
- Department of Urology, Johns Hopkins School of Medicine, Baltimore, MD, USA
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