1
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Gong J, Kim DM, Freeman MR, Kim H, Ellis L, Smith B, Theodorescu D, Posadas E, Figlin R, Bhowmick N, Freedland SJ. Genetic and biological drivers of prostate cancer disparities in Black men. Nat Rev Urol 2024; 21:274-289. [PMID: 37964070 DOI: 10.1038/s41585-023-00828-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/05/2023] [Indexed: 11/16/2023]
Abstract
Black men with prostate cancer have historically had worse outcomes than white men with prostate cancer. The causes of this disparity in outcomes are multi-factorial, but a potential basis is that prostate cancers in Black men are biologically distinct from prostate cancers in white men. Evidence suggests that genetic and ancestral factors, molecular pathways involving androgen and non-androgen receptor signalling, inflammation, epigenetics, the tumour microenvironment and tumour metabolism are contributing factors to the racial disparities observed. Key genetic and molecular pathways linked to prostate cancer risk and aggressiveness have potential clinical relevance. Describing biological drivers of prostate cancer disparities could inform efforts to improve outcomes for Black men with prostate cancer.
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Affiliation(s)
- Jun Gong
- Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA.
| | - Daniel M Kim
- Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Michael R Freeman
- Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
- Department of Urology, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Hyung Kim
- Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
- Department of Urology, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Leigh Ellis
- Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Bethany Smith
- Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Dan Theodorescu
- Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
- Department of Urology, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Edwin Posadas
- Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Robert Figlin
- Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Neil Bhowmick
- Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Stephen J Freedland
- Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
- Department of Urology, Cedars-Sinai Medical Center, Los Angeles, CA, USA
- Section of Urology, Durham VA Medical Center, Durham, NC, USA
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2
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Zhang J, Ma J, Li S, Ma Y. Prostate cancer burden in major BRICS countries, 1990-2019: findings from the 2019 global burden of disease study. Eur J Cancer Prev 2024:00008469-990000000-00140. [PMID: 38595139 DOI: 10.1097/cej.0000000000000890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
BACKGROUND This study assessed prostate cancer burden and trends in major BRICS countries (Brazil, Russia, India, China, and South Africa) from 1990 to 2019. METHODS Utilizing Global Burden of Disease Study 2019 data, we calculated age-standardized rates for prostate cancer incidence, prevalence, mortality, and disability-adjusted life years (DALYs) with 95% uncertainty intervals (UIs). Joinpoint regression analysis determined the average annual percentage change (AAPC) for trend characterization. RESULTS Prostate cancer ranked highest in China for incidence, prevalence, mortality, and DALYs. In 2019, Brazil had the highest age-standardized incidence rate (ASIR) [55.029 (95% UI: 47.744-81.831)] and age-standardized prevalence rate (ASPR) [372.511 (95% UI: 327.549-549.128)], while South Africa recorded the highest age-standardized mortality rate (ASMR) [42.241 (95% UI: 32.146-47.933)], and age-standardized DALY rate (ASDR) [666.085 (95% UI: 522.626-764.612)]. ASIR and ASPR increased significantly over three decades (AAPC > 0), with varying ASMR and ASDR trends. CONCLUSION Prostate cancer poses a significant public health challenge. While incidence and prevalence rise, mortality declines in China, India, and Brazil. Tailored health policies are crucial to address diverse disease burden characteristics.
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Affiliation(s)
- Juan Zhang
- Department of Urology, Shengli Oilfield Central Hospital, Dongying, China
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3
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Jung G, Kim JK, Kim H, Lee J, Hong SK. The association between prostatitis and risk of prostate cancer: a National Health Insurance Database study. World J Urol 2022; 40:2781-2787. [PMID: 36201020 DOI: 10.1007/s00345-022-04165-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 09/24/2022] [Indexed: 10/10/2022] Open
Abstract
PURPOSE Inflammation is thought to affect the development of prostate cancer (PCa). By retrospectively investigating the database of the National Health Insurance Service, this study attempted to perform a relevant analysis of patients with prostatitis and PCa. METHODS Participants were aged ≥ 50 years. Patients diagnosed with prostatitis between 2010 and 2013 and matched controls were followed up until 2019. We selected controls with matched propensity scores for age, diabetes, hypertension, and the Charlson comorbidity index. Multivariate Cox regression analysis was conducted to determine the hazard ratio (HR) and 95% confidence interval (CI) of the association between prostatitis and PCa. The HR for PCa according to the presence of prostatitis was classified as acute, chronic, or other prostatitis. RESULTS A total of 746,176 patients from each group were analyzed. The incidence of PCa was significantly higher in the group with prostatitis (1.8% vs 0.6%, p < 0.001). The HR for PCa was significantly higher in patients with prostatitis (HR 2.99; 95% CI 2.89-3.09, p < 0.001). The HR for PCa was significantly higher in acute prostatitis than in chronic prostatitis (3.82; 95% CI 3.58-4.08; p < 0.001; HR 2.77; 95% CI 2.67-2.87, p < 0.001). The incidence of all-cause death in patients diagnosed PCa was significantly lower in prostatitis group (HR 0.58, 95% CI 0.53-0.63, p < 0.001). CONCLUSION Prostatitis is associated with an increased incidence of PCa. Acute prostatitis is associated with higher risk of PCa than chronic prostatitis. Clinicians should inform patients with prostatitis that they may have an increased risk of diagnosing PCa, and follow-up is needed.
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Affiliation(s)
- Gyoohwan Jung
- Department of Urology, Seoul National University Bundang Hospital, 173-82, Gumi-Ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, South Korea
| | - Jung Kwon Kim
- Department of Urology, Seoul National University Bundang Hospital, 173-82, Gumi-Ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, South Korea
| | - Hasung Kim
- Data Science Team, Hanmi Pharm. Co., Ltd, Seoul, South Korea
| | - Jungkuk Lee
- Data Science Team, Hanmi Pharm. Co., Ltd, Seoul, South Korea
| | - Sung Kyu Hong
- Department of Urology, Seoul National University Bundang Hospital, 173-82, Gumi-Ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, South Korea. .,Department of Urology, Seoul National University College of Medicine, Seoul, South Korea.
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4
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Lundgren P, Tribukait B, Kjellman A, Norming U, Jagarlmudi K, Gustafsson O. Serum thymidine kinase 1 concentration as a predictive biomarker in prostate cancer. Prostate 2022; 82:911-916. [PMID: 35294068 PMCID: PMC9311431 DOI: 10.1002/pros.24335] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 02/16/2022] [Accepted: 03/02/2022] [Indexed: 11/18/2022]
Abstract
BACKGROUND Thymidine kinase 1 (TK1) recycles DNA before cell division. We do not know if baseline blood concentrations of TK1 predict death in prostate cancer within 30 years. Our objective is to determine if there is an association between baseline levels of TK1 and future prostate cancer-specific mortality. METHODS With a "proof of concept" approach, we performed a nested case-control study among 1782 individuals screened for prostate cancer between 1988 and 1989. The concentration of TK1 was measured in frozen serum from 330 men, 36 of whom have died of prostate cancer. The primary endpoint was prostate cancer-specific mortality and outcomes after 30 years were analyzed using logistic regression modeling odds ratios (Ors). RESULTS The estimated OR (adjusted for age) for dying from prostate cancer among the men who had a TK1 value in the upper tertile was 2.39 (95% confidence interval 1.02-5.63). The corresponding OR, regardless of the cause of death, was 2.81 (1.24-6.34). CONCLUSIONS High levels of TK1 predicts death in prostate cancer within 30 years of follow-up.
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Affiliation(s)
- Per‐Olof Lundgren
- Department of Clinical Science, Intervention and TechnologyKarolinska Institute and Karolinska University HospitalStockholmSweden
| | - Bernhard Tribukait
- Department of Oncology‐PathologyKarolinska Institute and University HospitalStockholmSweden
| | - Anders Kjellman
- Department of Clinical Science, Intervention and TechnologyKarolinska Institute and Karolinska University HospitalStockholmSweden
| | - Ulf Norming
- Department of Clinical Science and EducationSödersjukhusetStockholmSweden
| | - Kiran Jagarlmudi
- Department of Anatomy, Physiology, and BiochemistrySwedish University of Agricultural SciencesUppsalaSweden
- Research and Development DivisionAroCell ABUppsalaSweden
| | - Ove Gustafsson
- Department of Clinical Science, Intervention and TechnologyKarolinska Institute and Karolinska University HospitalStockholmSweden
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5
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Johnson JR, Woods-Burnham L, Hooker SE, Batai K, Kittles RA. Genetic Contributions to Prostate Cancer Disparities in Men of West African Descent. Front Oncol 2021; 11:770500. [PMID: 34820334 PMCID: PMC8606679 DOI: 10.3389/fonc.2021.770500] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 10/01/2021] [Indexed: 12/11/2022] Open
Abstract
Prostate cancer (PCa) is the second most frequently diagnosed malignancy and the second leading cause of death in men worldwide, after adjusting for age. According to the International Agency for Research on Cancer, continents such as North America and Europe report higher incidence of PCa; however, mortality rates are highest among men of African ancestry in the western, southern, and central regions of Africa and the Caribbean. The American Cancer Society reports, African Americans (AAs), in the United States, have a 1.7 increased incidence and 2.4 times higher mortality rate, compared to European American's (EAs). Hence, early population history in west Africa and the subsequent African Diaspora may play an important role in understanding the global disproportionate burden of PCa shared among Africans and other men of African descent. Nonetheless, disparities involved in diagnosis, treatment, and survival of PCa patients has also been correlated to socioeconomic status, education and access to healthcare. Although recent studies suggest equal PCa treatments yield equal outcomes among patients, data illuminates an unsettling reality of disparities in treatment and care in both, developed and developing countries, especially for men of African descent. Yet, even after adjusting for the effects of the aforementioned factors; racial disparities in mortality rates remain significant. This suggests that molecular and genomic factors may account for much of PCa disparities.
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Affiliation(s)
- Jabril R. Johnson
- Division of Health Equities, Department of Population Sciences, City of Hope Comprehensive Cancer Center, Duarte, CA, United States
| | - Leanne Woods-Burnham
- Division of Health Equities, Department of Population Sciences, City of Hope Comprehensive Cancer Center, Duarte, CA, United States
| | - Stanley E. Hooker
- Division of Health Equities, Department of Population Sciences, City of Hope Comprehensive Cancer Center, Duarte, CA, United States
| | - Ken Batai
- Department of Urology, University of Arizona, Tucson, AZ, United States
| | - Rick A. Kittles
- Division of Health Equities, Department of Population Sciences, City of Hope Comprehensive Cancer Center, Duarte, CA, United States
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6
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Rundle AG, Sadasivan SM, Chitale DA, Gupta NS, Williamson SR, Kryvenko ON, Chen Y, Bobbitt K, Tang D, Rybicki BA. Racial differences in the systemic inflammatory response to prostate cancer. PLoS One 2021; 16:e0252951. [PMID: 34242232 PMCID: PMC8270440 DOI: 10.1371/journal.pone.0252951] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 05/25/2021] [Indexed: 11/19/2022] Open
Abstract
Systemic inflammation may increase risk for prostate cancer progression, but the role it plays in prostate cancer susceptibility is unknown. From a cohort of over 10,000 men who had either a prostate biopsy or transurethral resection that yielded a benign finding, we analyzed 517 incident prostate cancer cases identified during follow-up and 373 controls with one or more white blood cell tests during a follow-up period between one and 18 years. Multilevel, multivariable longitudinal models were fit to two measures of systemic inflammation, neutrophil-to-lymphocyte ratio (NLR) and monocyte-to-lymphocyte ratio (MLR), to determine NLR and MLR trajectories associated with increased risk for prostate cancer. For both measures, we found no significant differences in the trajectories by case/control status, however in modeling NLR trajectories there was a significant interaction between race (white or Black and case-control status. In race specific models, NLR and MLR values were consistently higher over time among white controls than white cases while case-control differences in NLR and MLR trajectories were not apparent among Black men. When cases were classified as aggressive as compared to non-aggressive, the case-control differences in NLR and MLR values over time among white men were most apparent for non-aggressive cases. For NLR among white men, significant case-control differences were observed for the entire duration of observation for men who had inflammation in their initial prostate specimen. It is possible that, among white men, monitoring of NLR and MLR trajectories after an initial negative biopsy may be useful in monitoring prostate cancer risk.
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Affiliation(s)
- Andrew G. Rundle
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, United States of America
| | - Sudha M. Sadasivan
- Department of Public Health Sciences, Henry Ford Hospital, Detroit, MI, United States of America
| | - Dhananjay A. Chitale
- Department of Pathology and Laboratory Medicine, Henry Ford Hospital, Detroit, MI, United States of America
| | - Nilesh S. Gupta
- Department of Pathology and Laboratory Medicine, Henry Ford Hospital, Detroit, MI, United States of America
| | - Sean R. Williamson
- Department of Pathology and Laboratory Medicine, Henry Ford Hospital, Detroit, MI, United States of America
| | - Oleksandr N. Kryvenko
- Department of Pathology and Laboratory Medicine, Department of Urology, and Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL, United States of America
| | - Yalei Chen
- Department of Public Health Sciences, Henry Ford Hospital, Detroit, MI, United States of America
| | - Kevin Bobbitt
- Department of Public Health Sciences, Henry Ford Hospital, Detroit, MI, United States of America
| | - Deliang Tang
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia Univ., New York, NY, United States of America
| | - Benjamin A. Rybicki
- Department of Public Health Sciences, Henry Ford Hospital, Detroit, MI, United States of America
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7
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Nascimento-Gonçalves E, Seixas F, Ferreira R, Colaço B, Parada B, Oliveira PA. An overview of the latest in state-of-the-art murine models for prostate cancer. Expert Opin Drug Discov 2021; 16:1349-1364. [PMID: 34224283 DOI: 10.1080/17460441.2021.1943354] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
INTRODUCTION Prostate cancer (PCa) is a complex, heterogenous and multifocal disease, which is debilitating for patients and often fatal - due to bone metastasis and castration-resistant cancer. The use of murine models that mimic human disease has been crucial in the development of innovative therapies and for better understanding the mechanisms associated with initiation and progression of PCa. AREAS COVERED This review presents a critical analysis of murine models for the study of PCa, highlighting their strengths, weaknesses and applications. EXPERT OPINION In animal models, disease may not occur exactly as it does in humans, and sometimes the levels of efficacy that certain treatments obtain in animal models cannot be translated into clinical practice. To choose the most appropriate animal model for each research work, it is crucial to understand the anatomical and physiological differences between the mouse and the human prostate, while it is also important to identify biological similarities and differences between murine and human prostate tumors. Although significant progress has already been made, thanks to many years of research and study, the number of new challenges and obstacles to overcome mean there is a long and difficult road still to travel.
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Affiliation(s)
- Elisabete Nascimento-Gonçalves
- Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal.,Center for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), Inov4Agro, UTAD, Vila Real, Portugal.,Associated Laboratory for Green Chemistry of the Network of Chemistry and Technology (Laqv-requimte),department of Chemistry, University of Aveiro (UA), Portugal
| | - Fernanda Seixas
- Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal.,Animal and Veterinary Research Centre (CECAV), UTAD, Vila Real, Portugal
| | - Rita Ferreira
- Associated Laboratory for Green Chemistry of the Network of Chemistry and Technology (Laqv-requimte),department of Chemistry, University of Aveiro (UA), Portugal
| | - Bruno Colaço
- Center for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), Inov4Agro, UTAD, Vila Real, Portugal.,Department of Zootechnics, University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal
| | - Belmiro Parada
- Faculty of Medicine, University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (Icbr), Coimbra, Portugal.,University of Coimbra, Center for Innovative Biomedicine and Biotechnology (CIBB), Coimbra, Portugal.,Clinical Academic Center of Coimbra (CACC), Coimbra, Portugal.,Urology and Renal Transplantation Department, Coimbra University Hospital Centre (CHUC), Coimbra, Portugal
| | - Paula A Oliveira
- Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal.,Center for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), Inov4Agro, UTAD, Vila Real, Portugal
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8
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Wu SQ, Su H, Wang YH, Zhao XK. Role of tumor-associated immune cells in prostate cancer: angel or devil? Asian J Androl 2020; 21:433-437. [PMID: 31134920 PMCID: PMC6732889 DOI: 10.4103/aja.aja_47_19] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Prostate cancer is the most common malignancy in the reproductive system of older males. Androgen deprivation therapy (ADT) is an important treatment for prostate cancer patients. However, almost all prostate cancer patients unavoidably progress to the castration-resistant stage after ADT treatment. Recent studies have shown that tumor-associated immune cells play major roles in the initiation, progression, and metastasis of prostate cancer. Various phenotypes of tumor-associated immune cells have tumor-promoting or antitumor functions mediated by interacting with tumor cells. Here, we review the current knowledge of tumor-associated immune cells in prostate cancer.
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Affiliation(s)
- Shui-Qing Wu
- Department of Urology, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Hao Su
- Department of Urology, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Yin-Huai Wang
- Department of Urology, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Xiao-Kun Zhao
- Department of Urology, The Second Xiangya Hospital, Central South University, Changsha 410011, China
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9
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Ou T, Zhou Z, Turner DP, Zhu B, Lilly M, Jiang W. Increased Preoperative Plasma Level of Microbial 16S rDNA Translocation Is Associated With Relapse After Prostatectomy in Prostate Cancer Patients. Front Oncol 2020; 9:1532. [PMID: 32010622 PMCID: PMC6974797 DOI: 10.3389/fonc.2019.01532] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 12/19/2019] [Indexed: 12/13/2022] Open
Abstract
Background: The environmental factors for promoting prostate cancer (PCa) recurrence remain unknown. Methods: A retrospective cross-sectional study was conducted in healthy men (n = 12) and PCa patients undergoing prostatectomy (n = 27). Plasma preoperative level of total cell-free bacterial 16S rDNA, a marker of microbial translocation, was evaluated by qPCR. Plasma levels of prostate-specific antigen (PSA) were evaluated by ELISA. Results: Similar degrees of microbial translocation were found in healthy men and patients. However, the levels of microbial 16S rDNA were increased in patients with cancer relapse (n = 10) compared to patients without relapse (n = 17) after prostatectomy. Furthermore, the levels of microbial 16S rDNA were marginally increased in patients with pT3 or pT4 tumors compared to those with pT 2 or less. The levels of microbial 16S rDNA tended to increase in patients with higher pathologic tumor stage, Gleason score, and margin and lymph node involvements; but these differences did not reach significance. Conclusion: The plasma 16S rDNA levels increased in patients with PCa who have biochemical recurrence and 16S rDNA levels were higher in patients with higher-grade PCa.
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Affiliation(s)
- Tongwen Ou
- Department of Urology, Capital Medical University Affiliated XuanWu Hospital, Beijing, China
| | - Zejun Zhou
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha, China
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, SC, United States
| | - David P. Turner
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC, United States
| | - Baoli Zhu
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Beijing Key Laboratory of Antimicrobial Resistance and Pathogen Genomics, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
- Savaid Medical School, University of Chinese Academy of Sciences, Beijing, China
- Department of Pathogenic Biology, School of Basic Medical Sciences, Southwest Medical University, Luzhou, China
| | - Michael Lilly
- Division of Hematology and Oncology, Department of Medicine, Medical University of South Carolina, Charleston, SC, United States
| | - Wei Jiang
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, SC, United States
- Division of Infectious Diseases, Department of Medicine, Medical University of South Carolina, Charleston, SC, United States
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10
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Langston ME, Horn M, Khan S, Pakpahan R, Doering M, Dennis LK, Sutcliffe S. A Systematic Review and Meta-analysis of Associations between Clinical Prostatitis and Prostate Cancer: New Estimates Accounting for Detection Bias. Cancer Epidemiol Biomarkers Prev 2019; 28:1594-1603. [PMID: 31337640 DOI: 10.1158/1055-9965.epi-19-0387] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 06/25/2019] [Accepted: 07/17/2019] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Previous meta-analyses have estimated summary positive associations between clinical prostatitis and prostate cancer. However, none have accounted for detection bias, the possibility for increased prostate cancer screening and detection in men with clinical prostatitis, in their pooled estimates. METHODS We searched for studies that investigated the relation between clinical prostatitis and prostate cancer through November 2018. Random effects meta-analysis was used to calculate summary odds ratios (OR) among all studies and in strata defined by methods used to reduce detection bias.Results: Although an increased odds of prostate cancer was seen among men with a history of clinical prostatitis in all 38 eligible studies combined [OR, 2.05; 95% confidence interval (CI), 1.64-2.57], this estimate attenuated to null among studies that performed the most rigorous analyses to limit detection bias (OR, 1.16; 95% CI, 0.77-1.74). CONCLUSIONS Our findings indicate that previously reported positive associations between clinical prostatitis and prostate cancer are likely due to detection bias. IMPACT Studies using rigorous detection bias methods are warranted to replicate these findings, as well as to examine the possible relation between prostate inflammation and prostate cancer directly, rather than indirectly through the diagnosis of "prostatitis," which includes a large proportion of men without evidence of prostate inflammation.
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Affiliation(s)
- Marvin E Langston
- Division of Public Health Sciences, Department of Surgery, Washington University School of Medicine, St. Louis, Missouri.
| | - Mara Horn
- Division of Public Health Sciences, Department of Surgery, Washington University School of Medicine, St. Louis, Missouri
| | - Saira Khan
- Division of Public Health Sciences, Department of Surgery, Washington University School of Medicine, St. Louis, Missouri.,Epidemiology Program, College of Health Sciences, University of Delaware, Newark, Delaware
| | - Ratna Pakpahan
- Division of Public Health Sciences, Department of Surgery, Washington University School of Medicine, St. Louis, Missouri
| | - Michelle Doering
- Becker Medical Library, Washington University School of Medicine, St. Louis, Missouri
| | - Leslie K Dennis
- Department of Epidemiology and Biostatistics, Mel and Enid Zuckerman College of Public Health, University of Arizona, Tucson, Arizona
| | - Siobhan Sutcliffe
- Division of Public Health Sciences, Department of Surgery, Washington University School of Medicine, St. Louis, Missouri.,Alvin J. Siteman Cancer Center, Department of Surgery, Washington University School of Medicine, St. Louis, Missouri
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11
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Kryvenko ON, Wang Y, Sadasivan S, Gupta NS, Rogers C, Bobbitt K, Chitale DA, Rundle A, Tang D, Rybicki BA. Potential effect of anti-inflammatory drug use on PSA kinetics and subsequent prostate cancer diagnosis: Risk stratification in black and white men with benign prostate biopsy. Prostate 2019; 79:1090-1098. [PMID: 31045267 PMCID: PMC6850397 DOI: 10.1002/pros.23820] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Accepted: 04/12/2019] [Indexed: 11/09/2022]
Abstract
BACKGROUND Rising prostate-specific antigen (PSA) levels are associated with both increased risk of prostate cancer and prostatic inflammation. The confounding effects of inflammation on the utility of PSA kinetics to predict prostate cancer may be partially mitigated by anti-inflammatory drug use. We investigated the influence of anti-inflammatory drug use on the association of PSA kinetics with prostate cancer risk. METHODS We studied 488 prostate cancer case-control pairs (290 white, 198 African American (AA)) nested in a retrospective cohort of men with a benign prostate biopsy. A series of multivariable models estimated prostate cancer risk associated with PSA velocity (PSAV) at different levels of anti-inflammatory drug use while adjusting for the presence of both clinical and histologic prostatitis. RESULTS In men with one, two, or three or more courses of anti-inflammatory drug use, for each ng/mL/year increase in PSAV, prostate cancer risk increased 1.21-fold, 1.83-fold, and 1.97-fold, respectively ( P < 0.0001). In controls with histologic prostatitis, anti-inflammatory drug use was associated with a significantly lower PSAV ( P < 0.0001). This association was not observed in men with histologic prostatitis who were subsequently diagnosed with prostate cancer. A positive interaction between anti-inflammatory drug use and PSAV-associated prostate cancer risk was only observed in AA men, as well as a strong positive association between any anti-inflammatory drug use and clinical prostatitis ( P = 0.004). CONCLUSIONS In men with benign prostate biopsy, accounting for the presence of histologic prostatitis and anti-inflammatory drug use, particularly in AA men, may help distinguish between men with rising PSA because of prostatitis vs undiagnosed cancer.
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Affiliation(s)
- Oleksandr N. Kryvenko
- Department of Pathology and Laboratory Medicine, University of Miami Miller School of Medicine, Miami, Florida
- Department of Urology, University of Miami Miller School of Medicine, Miami, Florida
- Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, Florida
| | - Yun Wang
- Department of Public Health Sciences, Henry Ford Health System, Detroit, Michigan
| | - Sudha Sadasivan
- Department of Public Health Sciences, Henry Ford Health System, Detroit, Michigan
| | - Nilesh S. Gupta
- Department of Pathology, Henry Ford Health System, Detroit, Michigan
| | - Craig Rogers
- Vattikuti Urology Institute, Henry Ford Health System, Detroit, Michigan
| | - Kevin Bobbitt
- Department of Public Health Sciences, Henry Ford Health System, Detroit, Michigan
| | - Dhananjay A. Chitale
- Department of Pathology and Laboratory Medicine, University of Miami Miller School of Medicine, Miami, Florida
| | - Andrew Rundle
- Department of Epidemiology, Columbia University, New York, New York
| | - Deliang Tang
- Department of Environmental Health Sciences, Columbia University, New York, New York
| | - Benjamin A. Rybicki
- Department of Public Health Sciences, Henry Ford Health System, Detroit, Michigan
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12
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Doat S, Marous M, Rebillard X, Trétarre B, Lamy PJ, Soares P, Delbos O, Thuret R, Segui B, Cénée S, Menegaux F. Prostatitis, other genitourinary infections and prostate cancer risk: Influence of non-steroidal anti-inflammatory drugs? Results from the EPICAP study. Int J Cancer 2018; 143:1644-1651. [PMID: 29696626 DOI: 10.1002/ijc.31565] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 03/08/2018] [Accepted: 03/23/2018] [Indexed: 02/01/2023]
Abstract
Epidemiological studies have suggested that prostatitis may increase the risk of prostate cancer due to chronic inflammation. We studied the association between several genitourinary infections and the risk of prostate cancer based on data from the EPICAP study. EPICAP is a population-based case-control study conducted in the département of Hérault, France, between 2012 and 2014. A total of 819 incident cases and 879 controls have been face to face interviewed using a standardized questionnaire gathering information on known or suspected risk factors of prostate cancer, and personal history of genitourinary infections: prostatitis, urethritis, orchi-epididymitis, and acute pyelonephritis. Odds Ratios (OR) and their 95% confidence interval were estimated using multivariate unconditional logistic regression. Overall, 139 (18%) cases and 98 (12%) controls reported having at least one personal history of genitourinary infections (OR = 1.64 [1.23-2.20]). The risk increased with the number of infections (p-trend < 0.05). The association was specifically observed with personal history of chronic prostatitis and acute pyelonephritis (OR = 2.95 [1.26-6.92] and OR = 2.66 [1.29-5.51], respectively) and in men who did not use any non-steroidal anti-inflammatory drugs (OR = 2.00 [1.37-2.91]). Our results reinforce the hypothesis that chronic inflammation, generated by a personal history of genitourinary infections, may play a role in prostate carcinogenesis.
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Affiliation(s)
- Solène Doat
- Université Paris-Saclay, Université Paris-Sud, CESP (Center for Research in Epidemiology and Population Health), Inserm, Team Cancer and Environment, Villejuif, France
| | - Miguelle Marous
- Université Paris-Saclay, Université Paris-Sud, CESP (Center for Research in Epidemiology and Population Health), Inserm, Team Cancer and Environment, Villejuif, France
| | | | - Brigitte Trétarre
- Registre des Tumeurs de l'Hérault, EA 2415, ICM, Montpellier, France
| | - Pierre-Jean Lamy
- Service Urologie, Clinique Beau Soleil, Montpellier, France.,Institut médical d'Analyse Génomique - Imagenome, Labosud, Montpellier, France
| | | | | | - Rodolphe Thuret
- Centre Hospitalo-Universitaire, Hôpital Lapeyronie, Montpellier, France
| | - Bruno Segui
- Service Urologie, Clinique Beau Soleil, Montpellier, France
| | - Sylvie Cénée
- Université Paris-Saclay, Université Paris-Sud, CESP (Center for Research in Epidemiology and Population Health), Inserm, Team Cancer and Environment, Villejuif, France
| | - Florence Menegaux
- Université Paris-Saclay, Université Paris-Sud, CESP (Center for Research in Epidemiology and Population Health), Inserm, Team Cancer and Environment, Villejuif, France
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13
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Allott EH, Markt SC, Howard LE, Vidal AC, Moreira DM, Castro-Santamaria R, Andriole GL, Mucci LA, Freedland SJ. Geographic Differences in Baseline Prostate Inflammation and Relationship with Subsequent Prostate Cancer Risk: Results from the Multinational REDUCE Trial. Cancer Epidemiol Biomarkers Prev 2018; 27:783-789. [PMID: 29669727 DOI: 10.1158/1055-9965.epi-18-0076] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 03/08/2018] [Accepted: 04/12/2018] [Indexed: 11/16/2022] Open
Abstract
Background: Prostate cancer incidence rates vary 25-fold worldwide. Differences in PSA screening are largely, but not entirely, responsible. We examined geographic differences in prevalence of histologic prostate inflammation and subsequent prostate cancer risk.Methods: Seven thousand nonHispanic white men were enrolled in the REduction by DUtasteride of prostate Cancer Events (REDUCE) trial from Europe (n = 4,644), North America (n = 1,746), South America (n = 466), and Australia/New Zealand (n = 144). Histologic inflammation in baseline negative prostate biopsies was classified as chronic (lymphocytes/macrophages) or acute (neutrophils). Multivariable logistic regression was used to examine associations between region and prostate inflammation, and between region and prostate cancer risk at 2-year biopsy.Results: Prevalence of prostate inflammation varied across region, with broadly similar patterns for acute and chronic inflammation. Relative to Europe, prevalence of acute inflammation was higher in North America [odds ratio (OR), 1.77; 95% confidence interval (CI), 1.51-2.08] and Australia/New Zealand (OR, 2.07; 95% CI, 1.40-3.06). Men from these regions had lower prostate cancer risk than Europeans at biopsy. Among North Americans, prevalence of acute inflammation was higher in Canada versus the United States (OR, 1.40; 95% CI, 1.07-1.83), but prostate cancer risk did not differ between these regions. Among Europeans, prevalence of acute inflammation was lower in Northern and Eastern (OR, 0.79; 95% CI, 0.65-0.97 and OR 0.62; 95% CI, 0.45-0.87, respectively), relative to Western Europe, and these men had higher prostate cancer risk at biopsy.Conclusions: Prevalence of histologic prostate inflammation varied by region. Geographic differences in prostate inflammation tracked inversely with geographic differences in prostate cancer risk.Impact: Characterization of premalignant prostate biology and the relationship with subsequent prostate cancer risk could inform prostate cancer prevention efforts. Cancer Epidemiol Biomarkers Prev; 27(7); 783-9. ©2018 AACR.
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Affiliation(s)
- Emma H Allott
- Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina. .,Department of Histopathology and Morbid Anatomy, Trinity Translational Medicine Institute, Trinity College Dublin, Dublin, Ireland.,Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
| | - Sarah C Markt
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
| | - Lauren E Howard
- Department of Biostatistics and Bioinformatics, Duke University School of Medicine, Durham, North Carolina
| | - Adriana C Vidal
- Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Daniel M Moreira
- Department of Urology, University of Illinois at Chicago, Chicago, Illinois
| | | | | | - Lorelei A Mucci
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
| | - Stephen J Freedland
- Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, California.,Division of Urology, Veterans Affairs Medical Center, Durham, North Carolina
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14
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Vasavada SR, Dobbs RW, Kajdacsy-Balla AA, Abern MR, Moreira DM. Inflammation on Prostate Needle Biopsy is Associated with Lower Prostate Cancer Risk: A Meta-Analysis. J Urol 2017; 199:1174-1181. [PMID: 29246732 DOI: 10.1016/j.juro.2017.11.120] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/30/2017] [Indexed: 11/16/2022]
Abstract
PURPOSE We performed a comprehensive literature review and meta-analysis to evaluate the association of inflammation on prostate needle biopsies and prostate cancer risk. MATERIALS AND METHODS We searched Embase®, PubMed® and Web of Science™ from January 1, 1990 to October 1, 2016 for abstracts containing the key words prostate cancer, inflammation and biopsy. Study inclusion criteria were original research, adult human subjects, cohort or case-control study design, histological inflammation on prostate needle biopsy and prostate cancer on histology. Two independent teams reviewed abstracts and extracted data from the selected manuscripts. Combined ORs and 95% CIs of any, acute and chronic inflammation were calculated using the random effects method. RESULTS Of the 1,030 retrieved abstracts 46 underwent full text review and 25 were included in the final analysis, comprising a total of 20,585 subjects and 6,641 patients with prostate cancer. There was significant heterogeneity among studies (I2 = 84.4%, p <0.001). The presence of any inflammation was significantly associated with a lower prostate cancer risk in 25 studies (OR 0.455, 95% CI 0.337-0.573). There was no evidence of publication bias (p >0.05). When subanalyzed by inflammation type, acute inflammation in 4 studies and chronic inflammation in 15 were each associated with a lower prostate cancer risk (OR 0.681, 95% CI 0.450-0.913 and OR 0.499, 95% CI 0.334-0.665, respectively). CONCLUSIONS In a meta-analysis of 25 studies inflammation on prostate needle biopsy was associated with a lower prostate cancer risk. Clinically the presence of inflammation on prostate needle biopsy may lower the risk of a subsequent prostate cancer diagnosis.
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Affiliation(s)
- Shaleen R Vasavada
- Departments of Urology and Pathology (AAK-B), University of Illinois at Chicago, Chicago, Illinois
| | - Ryan W Dobbs
- Departments of Urology and Pathology (AAK-B), University of Illinois at Chicago, Chicago, Illinois
| | - André A Kajdacsy-Balla
- Departments of Urology and Pathology (AAK-B), University of Illinois at Chicago, Chicago, Illinois
| | - Michael R Abern
- Departments of Urology and Pathology (AAK-B), University of Illinois at Chicago, Chicago, Illinois
| | - Daniel M Moreira
- Departments of Urology and Pathology (AAK-B), University of Illinois at Chicago, Chicago, Illinois.
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15
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Glover M, Soni S, Ren Q, Maclennan GT, Fu P, Gupta S. Influence of chronic inflammation on Bcl-2 and PCNA expression in prostate needle biopsy specimens. Oncol Lett 2017; 14:3927-3934. [PMID: 28943900 PMCID: PMC5604163 DOI: 10.3892/ol.2017.6668] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Accepted: 03/17/2017] [Indexed: 01/08/2023] Open
Abstract
The association between inflammation and cancer has been established in certain forms of human malignancies; however, its role in prostate cancer remains unclear. The present study investigates a possible association between chronic inflammation and the development of epithelial neoplasia in the prostate. Needle biopsy specimens were obtained from patients with serum prostate-specific antigen levels >4 ng/ml, evaluated for morphological findings, and immunostained for Bcl-2 and proliferating cell nuclear antigen (PCNA). Bcl-2 is a survival protein that appears to lie at a nodal point in pathways involved in cell survival, carcinogenesis, and development of therapeutic resistance in certain cancer types. Similarly, PCNA is a critical protein for DNA replication, repair of DNA damage, chromatin structure maintenance, chromosome segregation and cell-cycle progression. The association between these two proteins was examined in prostate tissues with and without chronic inflammation, as well as tissues with and without evidence of neoplastic changes. Of the 106 needle biopsies examined, 18% exhibited atrophy with inflammation. Proliferative inflammatory atrophy/post-atrophic hyperplasia were observed in 42%, high-grade prostatic intraepithelial neoplasia (HGPIN) in 8%, prostatic adenocarcinoma in 11%, and 2% had atypical acinar proliferation suspicious for malignancy. A total of 36 specimens were stained for Bcl-2 and PCNA. Bcl-2 was expressed widely in inflammatory and epithelial tissue; however, more intense expression was observed in the areas of chronic inflammation, predominantly in infiltrating immune cells. The highest proliferation index was observed in the epithelia of HGPIN and cancer. An inverse correlation between the expression of Bcl-2 and the expression of PCNA was observed in the epithelium. The areas of chronic inflammation were associated with increased Bcl-2 expression, whereas the highly proliferative epithelium minimally expressed Bcl-2. These results suggest that Bcl-2 alters the phenotype of particular epithelial cells with a gain in neoplastic characteristics, leading to a likely precursor that may later progress into HGPIN and cancer.
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Affiliation(s)
- Michael Glover
- Department of Urology, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Shardul Soni
- Department of Urology, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Qinghu Ren
- Department of Pathology, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Gregory T Maclennan
- Department of Pathology, Case Western Reserve University, Cleveland, OH 44106, USA.,Division of General Medical Sciences, Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Pingfu Fu
- Division of General Medical Sciences, Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH 44106, USA.,Department of Epidemiology and Biostatistics, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Sanjay Gupta
- Department of Urology, Case Western Reserve University, Cleveland, OH 44106, USA.,Division of General Medical Sciences, Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH 44106, USA.,The Urology Institute, University Hospitals Cleveland Medical Center, Cleveland, OH 44106, USA.,Department of Urology, Louis Stokes Cleveland Veterans Affairs Medical Center, Cleveland, OH 44106, USA
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16
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Magri V, Montanari E, Marras E, Perletti G. Aminoglycoside antibiotics for NIH category II chronic bacterial prostatitis: A single-cohort study with one-year follow-up. Exp Ther Med 2016; 12:2585-2593. [PMID: 27698761 PMCID: PMC5038489 DOI: 10.3892/etm.2016.3631] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 07/21/2016] [Indexed: 11/06/2022] Open
Abstract
Although fluoroquinolones are first-line agents for the treatment of National Institutes of Health (NIH) category II chronic bacterial prostatitis (CBP), therapy with these agents is not always feasible due to the increasing worldwide resistance of causative uropathogens. New therapeutic options are urgently required, as drugs such as β-lactam antibiotics distribute poorly to prostatic sites of infection and trimethoprim therapy is often unfeasible due to high resistance rates. The present study aimed to analyze the efficacy of aminoglycosides, administered to a cohort of 78 patients affected by fluoroquinolone-resistant CBP, or excluded from fluoroquinolone therapy due to various contraindications. Patients received netilmicin (4.5 mg/kg, once-daily, intramuscular), combined or not with a β-lactam antibiotic, for 4 weeks. Follow-up visits were scheduled 6 and 12 months after the end of treatment. Fifty-five out of 70 patients (78.6%) showed eradication of the causative pathogen, and a significant reduction of the NIH-Chronic Prostatitis Symptom Index (NIH-CPSI) total score from a baseline median value of 21 to 14 at the end of therapy, and to 9 and 8 at 6-month and 12-month follow-up assessments, respectively. The pain, voiding and quality of life subdomains of the NIH-CPSI decreased accordingly. In 15 patients showing persistence of infection, NIH-CPSI total and subdomain scores did not decrease at the end of therapy. Additional clinical parameters, such as the urinary peak flow rate, percentage voided bladder, serum prostate-specific antigen concentration, International Prostate Symptom Score and prostate volume improved significantly only in the group of patients in which the infection was eradicated. Therapy was well tolerated, and genetic testing for deafness-predisposing mitochondrial mutations allowed safer administration of aminoglycosides. These results suggest that aminoglycosides may become a therapeutic alternative for the treatment of CBP. These findings should be further validated in a randomized-controlled setting.
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Affiliation(s)
- Vittorio Magri
- Urology Secondary Care Clinic, Azienda Socio-Sanitaria Territoriale-Nord, I-20132 Milan, Italy
| | - Emanuele Montanari
- Urology Complex Unit, Ca' Granda Foundation, IRCCS Ospedale Maggiore Policlinico di Milano, I-20122 Milan, Italy
| | - Emanuela Marras
- Department of Biotechnology and Life Sciences, Section of Medical and Surgical Sciences, University of Insubria, I-21052 Busto Arsizio, Italy
| | - Gianpaolo Perletti
- Department of Biotechnology and Life Sciences, Section of Medical and Surgical Sciences, University of Insubria, I-21052 Busto Arsizio, Italy; Department of Basic Medical Sciences, Faculty of Medicine and Health Sciences, Ghent University, B-9000 Ghent, Belgium
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17
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Racial differences in prostate inflammation: results from the REDUCE study. Oncotarget 2016; 8:71393-71399. [PMID: 29069714 PMCID: PMC5641057 DOI: 10.18632/oncotarget.10690] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Accepted: 07/07/2016] [Indexed: 12/16/2022] Open
Abstract
Prostate cancer (PC) risk differs between races, and we previously showed prostate inflammation in benign prostate tissue was linked with a lower future PC risk. However, whether prostate tissue inflammation varies by race is unknown. We analyzed baseline acute and chronic prostate inflammation by race in REDUCE, a 4-year, multicenter, placebo-controlled study where all men had a negative prostate biopsy prior to enrollment. We included 7,982 men with standardized central pathology review to determine the presence or absence of chronic or acute inflammation in baseline prostate biopsy tissue. Logistic regression was used to compare prostate inflammation by race, adjusting for confounders. Of 7,982 men, 7,271 were white (91.1%), 180 (2.3%) black, 131 (1.6%) Asian, 319 (4.0%) Hispanic and 81 (1%) unknown. A total of 78% had chronic and 15% had acute inflammation. On multivariable analysis relative to white men, black men were less likely (OR = 0.65, 95%CI: 0.41-1.03, p = 0.07) and Asian men more likely to have acute inflammation (OR = 1.74, 95%CI: 1.14-2.65, p = 0.001). Hispanic men had similar levels of acute inflammation as white men. Chronic inflammation did not significantly differ across races. We identified racial differences in acute inflammation, particularly in Asian men, in benign prostate tissue that inversely mirrored population-level data on PC race disparity. As we showed in REDUCE that acute inflammation is linked with lower future PC risk, if validated in future studies, these data suggest racial differences in prostatic acute inflammation may contribute in part to race differences in PC risk, especially among Asian men.
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18
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From Inflammation to Prostate Cancer: The Role of Inflammasomes. Adv Urol 2016; 2016:3140372. [PMID: 27429614 PMCID: PMC4939357 DOI: 10.1155/2016/3140372] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 05/17/2016] [Accepted: 06/09/2016] [Indexed: 12/22/2022] Open
Abstract
Inflammation-associated studies entice specific attention due to inflammation's role in multiple stages of prostate cancer development. However, mechanistic regulation of inflammation inciting prostate cancer remains largely uncharacterized. A focused class of inflammatory regulators known as inflammasomes has recently gained attention in cancer development. Inflammasomes are a multiprotein complex that drives a cascade of proinflammatory cytokines regulating various cellular activities. Inflammasomes activation is linked with infection, stress, or danger signals, which are common events within the prostate gland. In this study, we review the potential of inflammasomes in understanding the role of inflammation in prostate cancer.
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