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Siddappa M, Hussain S, Wani SA, White J, Tang H, Gray JS, Jafari H, Wu HC, Long MD, Elhussin I, Karanam B, Wang H, Morgan R, Hardiman G, Adelani IB, Rotimi SO, Murphy AR, Nonn L, Davis MB, Kittles RA, Hughes Halbert C, Sucheston-Campbell LE, Yates C, Campbell MJ. African American Prostate Cancer Displays Quantitatively Distinct Vitamin D Receptor Cistrome-transcriptome Relationships Regulated by BAZ1A. CANCER RESEARCH COMMUNICATIONS 2023; 3:621-639. [PMID: 37082578 PMCID: PMC10112383 DOI: 10.1158/2767-9764.crc-22-0389] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 01/12/2023] [Accepted: 03/07/2023] [Indexed: 04/22/2023]
Abstract
African American (AA) prostate cancer associates with vitamin D3 deficiency, but vitamin D receptor (VDR) genomic actions have not been investigated in this context. We undertook VDR proteogenomic analyses in European American (EA) and AA prostate cell lines and four clinical cohorts. Rapid immunoprecipitation mass spectrometry of endogenous protein (RIME) analyses revealed that nonmalignant AA RC43N prostate cells displayed the greatest dynamic protein content in the VDR complex. Likewise, in AA cells, Assay for Transposase-Accessible Chromatin using sequencing established greater 1α,25(OH)2D3-regulated chromatin accessibility, chromatin immunoprecipitation sequencing revealed significant enhancer-enriched VDR cistrome, and RNA sequencing identified the largest 1α,25(OH)2D3-dependent transcriptome. These VDR functions were significantly corrupted in the isogenic AA RC43T prostate cancer cells, and significantly distinct from EA cell models. We identified reduced expression of the chromatin remodeler, BAZ1A, in three AA prostate cancer cohorts as well as RC43T compared with RC43N. Restored BAZ1A expression significantly increased 1α,25(OH)2D3-regulated VDR-dependent gene expression in RC43T, but not HPr1AR or LNCaP cells. The clinical impact of VDR cistrome-transcriptome relationships were tested in three different clinical prostate cancer cohorts. Strikingly, only in AA patients with prostate cancer, the genes bound by VDR and/or associated with 1α,25(OH)2D3-dependent open chromatin (i) predicted progression from high-grade prostatic intraepithelial neoplasia to prostate cancer; (ii) responded to vitamin D3 supplementation in prostate cancer tumors; (iii) differentially responded to 25(OH)D3 serum levels. Finally, partial correlation analyses established that BAZ1A and components of the VDR complex identified by RIME significantly strengthened the correlation between VDR and target genes in AA prostate cancer only. Therefore, VDR transcriptional control is most potent in AA prostate cells and distorted through a BAZ1A-dependent control of VDR function. Significance Our study identified that genomic ancestry drives the VDR complex composition, genomic distribution, and transcriptional function, and is disrupted by BAZ1A and illustrates a novel driver for AA prostate cancer.
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Affiliation(s)
- Manjunath Siddappa
- Pharmaceutics and Pharmaceutical Chemistry, College of Pharmacy, The Ohio State University, Columbus, Ohio
| | - Shahid Hussain
- Pharmaceutics and Pharmaceutical Chemistry, College of Pharmacy, The Ohio State University, Columbus, Ohio
| | - Sajad A. Wani
- Pharmaceutics and Pharmaceutical Chemistry, College of Pharmacy, The Ohio State University, Columbus, Ohio
| | - Jason White
- Department of Biology and Center for Cancer Research, Tuskegee University, Tuskegee, Alabama
| | - Hancong Tang
- Pharmaceutics and Pharmaceutical Chemistry, College of Pharmacy, The Ohio State University, Columbus, Ohio
| | - Jaimie S. Gray
- Pharmaceutics and Pharmaceutical Chemistry, College of Pharmacy, The Ohio State University, Columbus, Ohio
| | - Hedieh Jafari
- Pharmaceutics and Pharmaceutical Chemistry, College of Pharmacy, The Ohio State University, Columbus, Ohio
| | - Hsu-Chang Wu
- Pharmaceutics and Pharmaceutical Chemistry, College of Pharmacy, The Ohio State University, Columbus, Ohio
| | - Mark D. Long
- Department of Biostatistics and Bioinformatics, Roswell Park Comprehensive Cancer Center, Buffalo, New York
| | - Isra Elhussin
- Department of Biology and Center for Cancer Research, Tuskegee University, Tuskegee, Alabama
| | - Balasubramanyam Karanam
- Department of Biology and Center for Cancer Research, Tuskegee University, Tuskegee, Alabama
| | - Honghe Wang
- Department of Biology and Center for Cancer Research, Tuskegee University, Tuskegee, Alabama
| | - Rebecca Morgan
- School of Biological Sciences, Institute for Global Food Security, Queen's University Belfast, Belfast, United Kingdom
| | - Gary Hardiman
- School of Biological Sciences, Institute for Global Food Security, Queen's University Belfast, Belfast, United Kingdom
- Department of Medicine, Medical University of South Carolina, Charleston, South Carolina
| | | | - Solomon O. Rotimi
- Department of Biochemistry, Covenant University, Ota, Ogun State, Nigeria
| | - Adam R. Murphy
- Department of Urology, Northwestern Medicine, Chicago, Illinois
| | - Larisa Nonn
- Department of Pathology, University of Illinois at Chicago, Chicago, Illinois
| | - Melissa B. Davis
- Department of Surgery, Weill Cornell Medicine, New York City, New York
| | - Rick A. Kittles
- Division of Health Equities, Department of Population Sciences, City of Hope, Duarte, California
| | - Chanita Hughes Halbert
- Department of Population and Public Health Sciences, University of Southern California, Los Angeles, California
- Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, California
| | - Lara E. Sucheston-Campbell
- Division of Pharmacy Practice and Science, College of Pharmacy, The Ohio State University, Columbus, Ohio
- Department of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio
| | - Clayton Yates
- Department of Biology and Center for Cancer Research, Tuskegee University, Tuskegee, Alabama
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland
- Department of Oncology Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Moray J. Campbell
- Pharmaceutics and Pharmaceutical Chemistry, College of Pharmacy, The Ohio State University, Columbus, Ohio
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Hussain S, Yates C, Campbell MJ. Vitamin D and Systems Biology. Nutrients 2022; 14:nu14245197. [PMID: 36558356 PMCID: PMC9782494 DOI: 10.3390/nu14245197] [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: 09/26/2022] [Revised: 11/28/2022] [Accepted: 12/01/2022] [Indexed: 12/12/2022] Open
Abstract
The biological actions of the vitamin D receptor (VDR) have been investigated intensively for over 100 years and has led to the identification of significant insights into the repertoire of its biological actions. These were initially established to be centered on the regulation of calcium transport in the colon and deposition in bone. Beyond these well-known calcemic roles, other roles have emerged in the regulation of cell differentiation processes and have an impact on metabolism. The purpose of the current review is to consider where applying systems biology (SB) approaches may begin to generate a more precise understanding of where the VDR is, and is not, biologically impactful. Two SB approaches have been developed and begun to reveal insight into VDR biological functions. In a top-down SB approach genome-wide scale data are statistically analyzed, and from which a role for the VDR emerges in terms of being a hub in a biological network. Such approaches have confirmed significant roles, for example, in myeloid differentiation and the control of inflammation and innate immunity. In a bottom-up SB approach, current biological understanding is built into a kinetic model which is then applied to existing biological data to explain the function and identify unknown behavior. To date, this has not been applied to the VDR, but has to the related ERα and identified previously unknown mechanisms of control. One arena where applying top-down and bottom-up SB approaches may be informative is in the setting of prostate cancer health disparities.
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Affiliation(s)
- Shahid Hussain
- Division of Pharmaceutics and Pharmaceutical Chemistry, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
| | - Clayton Yates
- Department of Biology and Center for Cancer Research, Tuskegee University, Tuskegee, AL 36088, USA
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
- Department of Oncology Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Moray J. Campbell
- Division of Pharmaceutics and Pharmaceutical Chemistry, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
- Correspondence:
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Ermini L, Francis JC, Rosa GS, Rose AJ, Ning J, Greaves M, Swain A. Evolutionary selection of alleles in the melanophilin gene that impacts on prostate organ function and cancer risk. EVOLUTION MEDICINE AND PUBLIC HEALTH 2021; 9:311-321. [PMID: 34754452 PMCID: PMC8573191 DOI: 10.1093/emph/eoab026] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 09/03/2021] [Indexed: 11/21/2022]
Abstract
Background and objectives Several hundred inherited genetic variants or SNPs that alter the risk of cancer have been identified through genome-wide association studies. In populations of European ancestry, these variants are mostly present at relatively high frequencies. To gain insight into evolutionary origins, we screened a series of genes and SNPs linked to breast or prostate cancer for signatures of historical positive selection. Methodology We took advantage of the availability of the 1000 genome data and we performed genomic scans for positive selection in five different Caucasian populations as well as one African reference population. We then used prostate organoid cultures to provide a possible functional explanation for the interplay between the action of evolutionary forces and the disease risk association. Results Variants in only one gene showed genomic signatures of positive, evolutionary selection within Caucasian populations melanophilin (MLPH). Functional depletion of MLPH in prostate organoids, by CRISPR/Cas9 mutation, impacted lineage commitment of progenitor cells promoting luminal versus basal cell differentiation and on resistance to androgen deprivation. Conclusions and implications The MLPH variants influencing prostate cancer risk may have been historically selected for their adaptive benefit on skin pigmentation but MLPH is highly expressed in the prostate and the derivative, positively selected, alleles decrease the risk of prostate cancer. Our study suggests a potential functional mechanism via which MLPH and its genetic variants could influence risk of prostate cancer, as a serendipitous consequence of prior evolutionary benefits to another tissue. Lay Summary We screened a limited series of genomic variants associated with breast and prostate cancer risk for signatures of historical positive selection. Variants within the melanophilin (MLPH) gene fell into this category. Depletion of MLPH in prostate organoid cultures, suggested a potential functional mechanism for impacting on cancer risk, as a serendipitous consequence of prior evolutionary benefits to another tissue.
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Affiliation(s)
- Luca Ermini
- Centre for Evolution and Cancer, The Institute of Cancer Research, London, UK
| | - Jeffrey C Francis
- Division of Cancer Biology, The Institute of Cancer Research, London, UK
| | - Gabriel S Rosa
- Division of Cancer Biology, The Institute of Cancer Research, London, UK
| | - Alexandra J Rose
- Division of Cancer Biology, The Institute of Cancer Research, London, UK
| | - Jian Ning
- Division of Cancer Biology, The Institute of Cancer Research, London, UK.,Tumour Profiling Unit, The Institute of Cancer Research, London, UK
| | - Mel Greaves
- Centre for Evolution and Cancer, The Institute of Cancer Research, London, UK
| | - Amanda Swain
- Division of Cancer Biology, The Institute of Cancer Research, London, UK.,Tumour Profiling Unit, The Institute of Cancer Research, London, UK
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Farrag SE, Dwivedi AK, Otoukesh S, Badri NJ, Sanchez LA, Nahleh ZA. Prevalence of Low Vitamin D in Patients with Breast Cancer in a Predominantly Hispanic Population at the American-Mexican Border. Nutr Cancer 2017; 69:819-824. [PMID: 28718665 DOI: 10.1080/01635581.2017.1339812] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
INTRODUCTION Low level of vitamin D (VD) has been linked with a higher risk of cancers. The aim of this study was to assess the prevalence of low VD in patients with breast cancer in a predominantly Mexican Hispanic/Latino patient population, a fast growing and relatively understudied population. MATERIALS/METHODS We sought to evaluate the serum VD levels in breast cancer patients diagnosed at the Texas Tech University Breast Cancer Center in El Paso, TX, between May 2013 and May2014 via a retrospective chart review of the Electronic Medical Records. RESULTS We identified a total of 83 consecutive breast cancer patients with available VD levels. Mean age 57 yr, 94% were Hispanics. VD was insufficient (<30 ng/ml) in 86% of patients (95% CI: 0.76-0.92) and it was deficient (<20 ng/ml) in 39% (95% CI: 0.28-0.50). CONCLUSION VD deficiency is widely prevalent in Hispanic/Latino patients with breast cancer. This is quite alarming in view of possible increased risk of cancer with low VD and potentially worse cancer outcomes. This calls for increased efforts to screen for, diagnose, and treat VD deficiency in this patient population. Further pharmacogenomics studies are warranted to explore the underlying etiology of VD deficiency in this paradoxically sunny region.
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Affiliation(s)
- Safa E Farrag
- a Department of Internal Medicine , Texas Tech University of Health Sciences Center(TTUHSC) , El Paso , Texas , USA
| | - Alok K Dwivedi
- b Division of Biostatistics and Epidemiology, Department of Biomedical Sciences , TTUHSC , El Paso , Texas , USA
| | - Salman Otoukesh
- c Division of Hematology/Oncology , Loma Linda University Medical Center , Loma Linda , California , USA
| | - Nabeel J Badri
- a Department of Internal Medicine , Texas Tech University of Health Sciences Center(TTUHSC) , El Paso , Texas , USA
| | - Luis A Sanchez
- d Department of Hematology/Oncology , Cleveland clinic Florida , cleveland Clinic Blvd, Weston , Florida , USA
| | - Zeina A Nahleh
- d Department of Hematology/Oncology , Cleveland clinic Florida , cleveland Clinic Blvd, Weston , Florida , USA
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Richards Z, Batai K, Farhat R, Shah E, Makowski A, Gann PH, Kittles R, Nonn L. Prostatic compensation of the vitamin D axis in African American men. JCI Insight 2017; 2:e91054. [PMID: 28138564 DOI: 10.1172/jci.insight.91054] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND. African American (AA) men are disproportionately affected by both prostate cancer (PCa) and vitamin D deficiency compared with European American (EA) men. Vitamin D deficiency is linked to increased PCa aggressiveness and mortality. Therefore, it has been hypothesized that vitamin D deficiency may contribute to the PCa disparity between AA and EA men. METHODS. We studied a cross sectional group of 60 PCa patients (AA, n = 31; EA, n = 29) who underwent radical prostatectomy. Vitamin D metabolites 25-hydroxyvitamin D (25(OH)D) and 1,25-dihydroxyvitamin D (1,25(OH)2D) were measured in the serum and tissue by uHPLC-MS-MS. Tissue was laser capture microdissected, and gene expression was quantified by microarray. DNA isolated from whole blood was genotyped for West African ancestry markers and vitamin D-related SNPs. RESULTS. Serum concentrations of 25(OH)D were lower in AAs, but concentrations of 1,25(OH)2D in the prostate tissue were higher compared with EAs. Expression of the vitamin D receptor was higher in prostate tissue from AAs. Expression of the extracellular receptor of vitamin D binding protein, LRP2, was positively associated with West African ancestry and inversely associated with tissue 25(OH)D concentrations in AAs. CONCLUSIONS. The relationships between vitamin D binding protein LRP2 and vitamin D metabolites suggest that the prohormone is actively transported into the prostate, followed by intraprostatic conversion to the active hormone, rather than passive diffusion. These findings support the presence of a compensatory response in prostate tissue to vitamin D deficiency in AAs and reveal a previously unknown complexity involving tissue distribution of vitamin D metabolites. FUNDING. Department of Defense Prostate Cancer Research Program Idea Award for Disparities Research PC121923 (LN and RK) and the NIH 1R01MD007105 (RK).
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Affiliation(s)
- Zachary Richards
- Department of Pathology, University of Illinois at Chicago (UIC), Chicago, Illinois, USA
| | - Ken Batai
- Division of Urology, Department of Surgery, University of Arizona College of Medicine, Tucson, Arizona, USA
| | - Rachael Farhat
- Department of Pathology, University of Illinois at Chicago (UIC), Chicago, Illinois, USA
| | - Ebony Shah
- Division of Urology, Department of Surgery, University of Arizona College of Medicine, Tucson, Arizona, USA
| | | | - Peter H Gann
- Department of Pathology, University of Illinois at Chicago (UIC), Chicago, Illinois, USA
| | - Rick Kittles
- Division of Urology, Department of Surgery, University of Arizona College of Medicine, Tucson, Arizona, USA
| | - Larisa Nonn
- Department of Pathology, University of Illinois at Chicago (UIC), Chicago, Illinois, USA.,University of Illinois Cancer Center, Chicago, Illinois, USA
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Mesquita KDC, Igreja ACDSM, Costa IMC. Ultraviolet index: a light in atopic dermatitis and vitamin D research? An Bras Dermatol 2016; 91:34-9. [PMID: 26982776 PMCID: PMC4782644 DOI: 10.1590/abd1806-4841.20164337] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2015] [Accepted: 03/15/2015] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND The role played by vitamin D in atopic dermatitis is controversial and has been the focus of many studies. The ultraviolet index has not been considered in this type of research. OBJECTIVES The objectives of the study were to assess 25-hydroxy vitamin D [25(OH)D] serum level in atopic dermatitis patients and control group, to investigate the association between atopic dermatitis clinical severity (using the SCORing Atopic Dermatitis index - SCORAD) and 25(OH)D serum levels, and to evaluate the independent predictors, including Ultraviolet index, SCORAD and 25(OH)D. METHODS We conducted a cross-sectional study of 106 atopic dermatitis patients. A control group was matched with a subsample of 54 participants with atopic dermatitis. SCORAD index, laboratory tests, and local Ultraviolet index were assessed. RESULTS The atopic dermatitis patients had serum 25(OH)D levels and mean UVI significantly higher than the control group. Immunoglobulin E and Ultraviolet index were associated with the SCORAD index. Skin type, age and Ultraviolet index were independent predictors of 25(OH)D. CONCLUSIONS Although statistically significant, the different levels of 25(OH)D between the paired groups may be attributed to the higher mean Ultraviolet index in atopic dermatitis patients. Since Ultraviolet index is an independent predictor of SCORAD index and of 25(OH)D level, it may work as a confounding factor in studies involving atopic dermatitis and 25(OH)D and must be considered in this kind of research.
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Murphy AB, Nyame Y, Martin IK, Catalona WJ, Hollowell CMP, Nadler RB, Kozlowski JM, Perry KT, Kajdacsy-Balla A, Kittles R. Vitamin D deficiency predicts prostate biopsy outcomes. Clin Cancer Res 2015; 20:2289-99. [PMID: 24789033 DOI: 10.1158/1078-0432.ccr-13-3085] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE The association between vitamin D and prostate biopsy outcomes has not been evaluated. We examine serum vitamin D levels with prostate biopsy results in men with an abnormal prostate-specific antigen and/or digital rectal examination. EXPERIMENTAL DESIGN Serum 25-hydroxyvitamin D (25-OH D) was obtained from 667 men, ages 40 to 79 years, prospectively enrolled from Chicago urology clinics undergoing first prostate biopsy. Logistic regression was used to evaluate the associations between 25-OH D status and incident prostate cancer, Gleason score, and tumor stage. RESULTS Among European American (EA) men, there was an association of 25-OH D <12 ng/mL with higher Gleason score ≥ 4+4 [OR, 3.66; 95% confidence interval (CI), 1.41-9.50; P = 0.008] and tumor stage [stage ≥ cT2b vs. ≤ cT2a, OR, 2.42 (1.14-5.10); P = 0.008]. In African American (AA) men, we find increased odds of prostate cancer diagnosis on biopsy with 25-OH D < 20 ng/mL [OR, 2.43 (1.20-4.94); P = 0.01]. AA men demonstrated an association between 25-OH D < 12 ng/mL and Gleason ≥ 4+4 [OR, 4.89 (1.59-15.07); P = 0.006]. There was an association with tumor stage ≥ cT2b vs. ≤ cT2a [OR, 4.22 (1.52-11.74); P = 0.003]. CONCLUSIONS In AA men, vitamin D deficiency was associated with increased odds of prostate cancer diagnosis on biopsy. In both EA and AA men, severe deficiency was positively associated with higher Gleason grade and tumor stage.
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Affiliation(s)
- Adam B Murphy
- Authors' Affiliations: Northwestern University; University of Illinois at Chicago, Chicago; Cook County Health and Hospitals System, Chicago, Illinois; Cleveland Clinic, Cleveland, Ohio; and University of Pennsylvania Medical Center, Philadelphia, Pennsylvania
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Steck SE, Arab L, Zhang H, Bensen JT, Fontham ETH, Johnson CS, Mohler JL, Smith GJ, Su JL, Trump DL, Woloszynska-Read A. Association between Plasma 25-Hydroxyvitamin D, Ancestry and Aggressive Prostate Cancer among African Americans and European Americans in PCaP. PLoS One 2015; 10:e0125151. [PMID: 25919866 PMCID: PMC4412567 DOI: 10.1371/journal.pone.0125151] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2014] [Accepted: 03/10/2015] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND African Americans (AAs) have lower circulating 25-hydroxyvitamin D3 [25(OH)D3] concentrations and higher prostate cancer (CaP) aggressiveness than other racial/ethnic groups. The purpose of the current study was to examine the relationship between plasma 25(OH)D3, African ancestry and CaP aggressiveness among AAs and European Americans (EAs). METHODS Plasma 25(OH)D3 was measured using LC-MS/MS (Liquid Chromatography Tandem Mass Spectrometry) in 537 AA and 663 EA newly-diagnosed CaP patients from the North Carolina-Louisiana Prostate Cancer Project (PCaP) classified as having either 'high' or 'low' aggressive disease based on clinical stage, Gleason grade and prostate specific antigen at diagnosis. Mean plasma 25(OH)D3 concentrations were compared by proportion of African ancestry. Logistic regression was used to calculate multivariable adjusted odds ratios (OR) and 95% confidence intervals (95%CI) for high aggressive CaP by tertile of plasma 25(OH)D3. RESULTS AAs with highest percent African ancestry (>95%) had the lowest mean plasma 25(OH)D3 concentrations. Overall, plasma 25(OH)D3 was associated positively with aggressiveness among AA men, an association that was modified by calcium intake (ORT 3vs.T1: 2.23, 95%CI: 1.26-3.95 among men with low calcium intake, and ORT 3vs.T1: 0.19, 95%CI: 0.05-0.70 among men with high calcium intake). Among EAs, the point estimates of the ORs were <1.0 for the upper tertiles with CIs that included the null. CONCLUSIONS Among AAs, plasma 25(OH)D3 was associated positively with CaP aggressiveness among men with low calcium intake and inversely among men with high calcium intake. The clinical significance of circulating concentrations of 25(OH)D3 and interactions with calcium intake in the AA population warrants further study.
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Affiliation(s)
- Susan E. Steck
- Department of Epidemiology and Biostatistics, Center for Research in Nutrition and Health Disparities, Cancer Prevention and Control Program, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina, United States of America
| | - Lenore Arab
- David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America
| | - Hongmei Zhang
- University of Memphis, Memphis, Tennessee, United States of America
| | - Jeannette T. Bensen
- Department of Epidemiology, Gillings School of Global Public Health, Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Elizabeth T. H. Fontham
- School of Public Health, Louisiana State University Health Sciences Center, New Orleans, Louisiana, United States of America
| | - Candace S. Johnson
- Roswell Park Cancer Institute, Buffalo, New York, United States of America
| | - James L. Mohler
- Roswell Park Cancer Institute, Buffalo, New York, United States of America
| | - Gary J. Smith
- Roswell Park Cancer Institute, Buffalo, New York, United States of America
| | - Joseph L. Su
- Division of Cancer Control and Population Sciences, National Cancer Institute, Bethesda, Maryland, United States of America
| | - Donald L. Trump
- Roswell Park Cancer Institute, Buffalo, New York, United States of America
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Yu J, Lavoué J, Parent MÉ. Sunlight exposure during leisure activities and risk of prostate cancer in Montréal, Canada, 2005-2009. BMC Public Health 2014; 14:756. [PMID: 25065376 PMCID: PMC4122789 DOI: 10.1186/1471-2458-14-756] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Accepted: 07/17/2014] [Indexed: 12/17/2022] Open
Abstract
Background Prostate cancer (PCa) is the leading cause of cancer in men in many developed countries, but no modifiable risk factors have been identified. A handful of analytical studies have suggested a possible etiological role for sunlight exposure. We report here on the association between leisure-time sunlight exposure during adulthood and PCa risk in the context of a population-based case–control study. Methods In all, 1,904 PCa cases were ascertained across Montreal French hospitals between 2005 and 2009. Concurrently, 1,962 population controls, frequency matched to cases by age (±5 years), were selected from the electoral list for French-speakers in Greater Montreal. Interviews elicited the frequency of engagement in any leisure activity during adulthood. This was used to derive cumulative sunlight exposure indices: a cumulative number of leisure activities events entailing sunlight exposure and a cumulative duration of sunlight exposure during leisure activities. Unconditional logistic regression was conducted to yield odds ratios (OR) and 95% confidence intervals (CI) for estimating the association between sunlight exposure indices and PCa risk, adjusting for age, ancestry, family history of PCa, PCa screening, education, solar protection, body mass index and physical activity. Results Compared with men in the upper quartile category for the number of sunlight exposure events, men never exposed during leisure time had an OR of 1.32 (95% CI: 0.82-2.14). ORs were 1.11, 0.91 and 1.00 for the first to the third quartiles of exposure, respectively. Similar results were observed for cumulative duration of exposure to sunlight, and by PCa aggressiveness. Conclusion These findings provide little evidence of an association between sunlight exposure during leisure-time and PCa risk. Men with no sunlight exposure appeared at somewhat higher risks but none of the estimates achieved statistical significance. Electronic supplementary material The online version of this article (doi:10.1186/1471-2458-14-756) contains supplementary material, which is available to authorized users.
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Affiliation(s)
| | | | - Marie-Élise Parent
- INRS-Institut Armand-Frappier, Université du Québec, Laval, Québec H7V 1B7, Canada.
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Abstract
OBJECTIVE Black and Hispanic individuals synthesize less vitamin D per unit of sun exposure than white individuals. The relationship between UV radiation and vitamin D insufficiency in minorities has not been well explored. DESIGN Prospective cohort study. SETTING Using the National Health and Nutrition Examination Survey, we obtained serum vitamin D levels for non-Hispanic Whites, Hispanics and non-Hispanic Blacks aged ≥18 years from 2000-2006. We linked these data with the average monthly solar UV index by census tract and data on sun exposure, vitamin D supplementation, health and demographics. We used multivariable regression analyses to assess vitamin D deficiency (<15 ng/ml) and insufficiency (<20 ng/ml) in January (when the UV index was lowest) by race/ethnicity and geography. SUBJECTS Adults (n 14,319) aged ≥18 years. RESULTS A 1-point increase in the UV index was associated with a 0·51 ng/ml increase in vitamin D (95% CI 0·35, 0·67 ng/ml; P<0·001). Non-Hispanic Black race and Hispanic ethnicity were associated with a 7·47 and 3·41 ng/ml decrease in vitamin D, respectively (both P<0·001). In January, an estimated 65·4% of non-Hispanic Blacks were deficient in vitamin D, compared with 28·9% of Hispanics and 14·0% of non-Hispanic Whites. An estimated 84·2% of non-Hispanic Blacks were insufficient in vitamin D v. 56·3% of Hispanics and 34·8% of non-Hispanic Whites. More non-Hispanic Blacks were estimated to be deficient in vitamin D in January in the highest UV index quartile than were non-Hispanic Whites in the lowest UV index quartile (60·2% v. 25·7%). CONCLUSIONS Wintertime vitamin D insufficiency is pervasive among minority populations, and not uncommon among non-Hispanic Whites.
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