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Sun C, Liu C, Liu X, Wu Z, Luo J, Liu R, Wang Y, Lu M, Wang Q, Guo M, Tang Y, Li X, Zheng J. Causal relationship between circulating cytokines and follicular lymphoma: a two-sample Mendelian randomization study. Am J Cancer Res 2024; 14:1577-1593. [PMID: 38726270 PMCID: PMC11076242 DOI: 10.62347/jckd6973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Accepted: 03/27/2024] [Indexed: 05/12/2024] Open
Abstract
Follicular lymphoma (FL), derived from germinal centre (GC) B cells, is a kind of systemic neoplasm. Even though FL is indolent, it remains an incurable haematology Neoplasm. Accumulating evidence has suggested that the circulating cytokine is associated with the development of FL, yet the causal relationship between FL and circulating cytokines remains undetermined. Therefore, we conducted a two-sample Mendelian randomization (MR) to confirm the causal link between FL and levels of circulating cytokines with the use of summary data on circulating cytokines and FL. All these data from genome-wide association study were derived from the Genome-wide pQTL mapping which contains 14,824 individuals. FL data were acquired exclusively from FinnGen, where 218,792 individuals (522 cases vs. 218,270 controls) were involved. Various statistical methods, including the inverse variance weighted method (IVW), weighted median (WME), simple model, weighted model (WM) and MR-Egger, were used to evaluate the potential causal connection between circulating cytokines and FL. Sensitivity analysis, which involves the examination of the heterogeneity, pleiotropy, and leave-one-out method, was also performed to ensure more trustworthy results. A bidirectional MR test was performed to evaluate the direction of causal association between circulating cytokines and FL. Combining all the steps of MR analysis, we revealed four causal cytokines: C-X-C motif chemokine ligand 5 (CXCL5), interleukin-15 receptor A (IL15RA), interleukin-20 (IL20), and neurotrophin-3 (NT-3). The risk of FL may be inversely linked to CXCL5 (OR=0.73, CI: 0.545-0.979, P=0.036), IL-15RA (OR=0.669, CI: 0.451-0.993, P=0.046), and IL-20 (OR=0.565, CI: 0.325-0.981, P=0.043) but positively linked to NT-3 (OR=1.872, CI: 1.063-3.297, P=0.03). In addition, in our study, no causal effect of FL on cytokines was demonstrated and no significant heterogeneity and pleiotropy were found. Our research revealed the causal relationship between cytokines and FL, along with both the anti-protective effect of CXCL5, IL-15RA, and IL-20 and the protective effect of neurotrophin-3 on FL. These findings aim to provide new clues regarding the pathogenesis of FL and to extend the potential of circulating cytokines to therapeutic interventions.
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Affiliation(s)
- Chen Sun
- Department of Pathology, Changhai Hospital, Navy Medical UniversityShanghai, China
- National Key Laboratory of Immunity and Inflammation and Institute of Immunology, Navy Medical UniversityShanghai, China
| | - Chengling Liu
- Center of Burns and Plastic Surgery and Dermatology, The 924th Hospital of Joint Logistics Support Force of The PLAGuilin, Guangxi, China
- National Key Laboratory of Immunity and Inflammation and Institute of Immunology, Navy Medical UniversityShanghai, China
| | - Xingchen Liu
- Department of Pathology, Changhai Hospital, Navy Medical UniversityShanghai, China
- National Key Laboratory of Immunity and Inflammation and Institute of Immunology, Navy Medical UniversityShanghai, China
| | - Zhaoruncheng Wu
- National Key Laboratory of Immunity and Inflammation and Institute of Immunology, Navy Medical UniversityShanghai, China
- School of Biomedical Engineering, Southern Medical UniversityGuangzhou, Guangdong, China
| | - Jianhua Luo
- National Key Laboratory of Immunity and Inflammation and Institute of Immunology, Navy Medical UniversityShanghai, China
| | - Ruolan Liu
- Department of Pathology, Changhai Hospital, Navy Medical UniversityShanghai, China
- National Key Laboratory of Immunity and Inflammation and Institute of Immunology, Navy Medical UniversityShanghai, China
| | - Yuanyuan Wang
- National Key Laboratory of Immunity and Inflammation and Institute of Immunology, Navy Medical UniversityShanghai, China
| | - Mengyu Lu
- Department of Pathology, Changhai Hospital, Navy Medical UniversityShanghai, China
- National Key Laboratory of Immunity and Inflammation and Institute of Immunology, Navy Medical UniversityShanghai, China
| | - Quanxing Wang
- National Key Laboratory of Immunity and Inflammation and Institute of Immunology, Navy Medical UniversityShanghai, China
| | - Meng Guo
- National Key Laboratory of Immunity and Inflammation and Institute of Immunology, Navy Medical UniversityShanghai, China
| | - Yi Tang
- Department of Plastic Surgery, Changhai Hospital, Navy Medical UniversityShanghai, China
| | - Xueying Li
- Department of Pathology, Changhai Hospital, Navy Medical UniversityShanghai, China
| | - Jianming Zheng
- Department of Pathology, Changhai Hospital, Navy Medical UniversityShanghai, China
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Huang Y, Lin W, Zheng X. Causal association between 637 human metabolites and ovarian cancer: a mendelian randomization study. BMC Genomics 2024; 25:97. [PMID: 38262941 PMCID: PMC10804684 DOI: 10.1186/s12864-024-09997-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Accepted: 01/09/2024] [Indexed: 01/25/2024] Open
Abstract
BACKGROUND Current evidence suggests a significant association between metabolites and ovarian cancer (OC); however, the causal relationship between the two remains unclear. This study employs Mendelian randomization (MR) to investigate the causal effects between different metabolites and OC. METHODS In this study, a total of 637 metabolites were selected as the exposure variables from the Genome-wide Association Study (GWAS) database ( http://gwas.mrcieu.ac.uk/datasets/ ). The OC related GWAS dataset (ieu-b-4963) was chosen as the outcome variable. R software and the TwoSampleMR package were utilized for the analysis in this study. MR analysis employed the inverse variance-weighted method (IVW), MR-Egger and weighted median (WM) for regression fitting, taking into consideration potential biases caused by linkage disequilibrium and weak instrument variables. Metabolites that did not pass the tests for heterogeneity and horizontal pleiotropy were considered to have no significant causal effect on the outcome. Steiger's upstream test was used to determine the causal direction between the exposure and outcome variables. RESULTS The results from IVW analysis revealed that a total of 31 human metabolites showed a significant causal effect on OC (P < 0.05). Among them, 9 metabolites exhibited consistent and stable causal effects, which were confirmed by Steiger's upstream test (P < 0.05). Among these 9 metabolites, Androsterone sulfate, Propionylcarnitine, 5alpha-androstan-3beta,17beta-diol disulfate, Total lipids in medium VLDL and Concentration of medium VLDL particles demonstrated a significant positive causal effect on OC, indicating that these metabolites promote the occurrence of OC. On the other hand, X-12,093, Octanoylcarnitine, N2,N2-dimethylguanosine, and Cis-4-decenoyl carnitine showed a significant negative causal association with OC, suggesting that these metabolites can inhibit the occurrence of OC. CONCLUSIONS The study revealed the complex effect of metabolites on OC through Mendelian randomization. As promising biomarkers, these metabolites are worthy of further clinical validation.
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Affiliation(s)
- Yedong Huang
- College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, China
- Department of Gynecology Oncology, Fujian Maternity and Child Health Hospital, Affiliated Hospital of Fujian Medical University, Fuzhou, China
- Fujian Province Key Clinical Specialty for Gynecology, Fujian Key Laboratory of Women and Children's Critical Disease Research, National Key Gynecology Clinical Specialty Construction Insititution of China, Fuzhou, China
| | - Wenyu Lin
- College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, China
- Laboratory of Gynecologic Oncology, Fujian Maternity and Child Health Hospital, Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Xiangqin Zheng
- College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, China.
- Department of Gynecology Oncology, Fujian Maternity and Child Health Hospital, Affiliated Hospital of Fujian Medical University, Fuzhou, China.
- Fujian Province Key Clinical Specialty for Gynecology, Fujian Key Laboratory of Women and Children's Critical Disease Research, National Key Gynecology Clinical Specialty Construction Insititution of China, Fuzhou, China.
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3
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He M, Huan L, Wang X, Fan Y, Huang J. Nine dietary habits and risk of colorectal cancer: a Mendelian randomization study. BMC Med Genomics 2024; 17:21. [PMID: 38233852 PMCID: PMC10795375 DOI: 10.1186/s12920-023-01782-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 12/16/2023] [Indexed: 01/19/2024] Open
Abstract
BACKGROUND Epidemiological studies have provided evidence that there is an association between diet and colorectal cancer. However, the causal relationship between dietary habits and colorectal cancer remains unknown. METHODS The UK Biobank provided summary-level genome-wide association study data for nine dietary habits, including alcohol consumption (n = 549,703), instant coffee consumption (n = 250,308), fruit consumption (n = 210,947), meat consumption (n = 210,947), full cream milk consumption (n = 41,306), sweets consumption (n = 25,521), tea consumption (n = 501,494), vegetable consumption (n = 210,947), and yogurt/ice cream consumption (n = 210,947). Additionally, data on colorectal cancer were collected, consisting of 5,567 cases and 372,016 controls. The MR analysis employed inverse variance weighted, weighted median, MR-Egger regression, and MR multivariate residuals tests. RESULTS In the predominantly European population, a positive association was observed between vegetables (OR = 1.014, 95% CI = 1.000-1.029, p = 0.048) and an increased risk of colorectal cancer. The results for vegetable did not survive correction for multiple comparisons. However, no strong evidence was found for other dietary factors, such as alcohol (OR = 1.012, 95% CI = 0.974-1.051, p = 0.556), fruit (OR = 1.007, 95% CI = 0.986-1.029, p = 0.512), meat (OR = 1.000, 95% CI = 0.987-1.026, p = 0.968), full cream milk (OR = 1.019, 95% CI = 0.979-1.061, p = 0.357), sweets (OR = 0.998, 95% CI = 0.991-1.004, p = 0.524), and tea (OR = 1.002, 95% CI = 0.994-1.009, p = 0.672), with regards to colorectal cancer risk in the European population. CONCLUSIONS Our study highlights the need for a more nuanced approach to dietary recommendations for CRC prevention, with greater emphasis adherence to the Mediterranean dietary pattern.
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Affiliation(s)
- Mengyang He
- Graduate School, Beijing University of Chinese Medicine, Beijing, China
| | - Luyao Huan
- Xiyuan Hospital of China Academy of Chinese Medical Sciences, Beijing, China
| | - Xuan Wang
- Graduate School, Beijing University of Chinese Medicine, Beijing, China
| | - Yingyi Fan
- Beijing University of Chinese Medicine Third Affiliated Hospital, No. 51 Anwai Xiaoguan Street, Chaoyang District, Beijing, 100029, China.
| | - Jinchang Huang
- Beijing University of Chinese Medicine Third Affiliated Hospital, No. 51 Anwai Xiaoguan Street, Chaoyang District, Beijing, 100029, China.
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Bouillon R, LeBoff MS, Neale RE. Health Effects of Vitamin D Supplementation: Lessons Learned From Randomized Controlled Trials and Mendelian Randomization Studies. J Bone Miner Res 2023; 38:1391-1403. [PMID: 37483080 PMCID: PMC10592274 DOI: 10.1002/jbmr.4888] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 07/09/2023] [Accepted: 07/18/2023] [Indexed: 07/25/2023]
Abstract
Vitamin D plays an important role in calcium homeostasis and many cellular processes. Although vitamin D supplements are widely recommended for community-dwelling adults, definitive data on whether these supplements benefit clinically important skeletal and extraskeletal outcomes have been conflicting. Although observational studies on effects of vitamin D on musculoskeletal and extraskeletal outcomes may be confounded by reverse causation, randomized controlled studies (RCTs) and Mendelian randomization (MR) studies can help to elucidate causation. In this review, we summarize the recent findings from large RCTs and/or MR studies of vitamin D on bone health and risk of fractures, falls, cancer, and cardiovascular disease, disorders of the immune system, multiple sclerosis, and mortality in community-dwelling adults. The primary analyses indicate that vitamin D supplementation does not decrease bone loss, fractures, falls, cancer incidence, hypertension, or cardiovascular risk in generally healthy populations. Large RCTs and meta-analyses suggest an effect of supplemental vitamin D on cancer mortality. The existence of extraskeletal benefits of vitamin D supplementations are best documented for the immune system especially in people with poor vitamin D status, autoimmune diseases, and multiple sclerosis. Accumulating evidence indicates that vitamin D may reduce all-cause mortality. These findings, in mostly vitamin D-replete populations, do not apply to older adults in residential communities or adults with vitamin D deficiency or osteoporosis. The focus of vitamin D supplementation should shift from widespread use in generally healthy populations to targeted vitamin D supplementation in select individuals, good nutritional approaches, and elimination of vitamin D deficiency globally. © 2023 American Society for Bone and Mineral Research (ASBMR).
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Affiliation(s)
- Roger Bouillon
- Laboratory of Clinical and Experimental Endocrinology, Department of Chronic Diseases, Mebabolism and Ageing, KU Leuven, Leuven, Belgium
| | - Meryl S LeBoff
- Calcium and Bone Section, Endocrine, Diabetes and Hypertension Division, Department of Medicine Brigham and Women's Hospital, Boston, MA, USA
| | - Rachel E Neale
- Population Health Program, QIMR Berghofer Medical Research Institute, Brisbane, Australia
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5
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Guo Z, Du H, Guo Y, Jin Q, Liu R, Yun Z, Zhang J, Li X, Ye Y. Association between leptin and NAFLD: a two-sample Mendelian randomization study. Eur J Med Res 2023; 28:215. [PMID: 37400922 DOI: 10.1186/s40001-023-01147-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 05/24/2023] [Indexed: 07/05/2023] Open
Abstract
BACKGROUND The etiology of nonalcoholic fatty liver disease (NAFLD) involves a complex interaction of genetic and environmental factors. Previous observational studies have revealed that higher leptin levels are related to a lower risk of developing NAFLD, but the causative association remains unknown. We intended to study the causal effect between leptin and NAFLD using the Mendelian randomization (MR) study. METHODS We performed a two-sample Mendelian randomization (TSMR) analysis using summary GWAS data from leptin (up to 50,321 individuals) and NAFLD (8,434 cases and 770,180 controls) in a European population. Instrumental variables (IVs) that satisfied the three core assumptions of Mendelian randomization were selected. The TSMR analysis was conducted using the inverse variance weighted (IVW) method, MR-Egger regression method, and weighted median (WM) method. To ensure the accuracy and stability of the study results, heterogeneity tests, multiple validity tests, and sensitivity analyses were conducted. RESULTS The findings of the TSMR correlation analysis between NAFLD and leptin were as follows: IVW method (odds ratio (OR) 0.6729; 95% confidence interval (95% CI) 0.4907-0.9235; P = 0.0142), WM method (OR 0.6549; 95% CI 0.4373-0.9806; P = 0.0399), and MR-Egger regression method (P = 0.6920). Additionally, the findings of the TSMR correlation analysis between NAFLD and circulating leptin levels adjusted for body mass index (BMI) were as follows: IVW method (OR 0.5876; 95% CI 0.3781-0.9134; P = 0.0181), WM method (OR 0.6074; 95% CI 0.4231-0.8721; P = 0.0069), and MR-Egger regression method (P = 0.8870). It has also been shown that higher levels of leptin are causally linked to a lower risk of developing NAFLD, suggesting that leptin may serve as a protective factor for NAFLD. CONCLUSIONS Using TSMR analysis and the GWAS database, we investigated the genetic relationship between elevated leptin levels and lowered risk of NAFLD in this study. However, further research is required to understand the underlying mechanisms.
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Affiliation(s)
- Ziwei Guo
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, 100700, China
- Beijing University of Chinese Medicine, Beijing, 100102, China
| | - Hongbo Du
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, 100700, China
- Institute of Liver Diseases, Beijing University of Chinese Medicine, Beijing, China
| | - Yi Guo
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, 100700, China
- Institute of Liver Diseases, Beijing University of Chinese Medicine, Beijing, China
| | - Qian Jin
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, 100700, China
- Beijing University of Chinese Medicine, Beijing, 100102, China
| | - Ruijia Liu
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, 100700, China
- Beijing University of Chinese Medicine, Beijing, 100102, China
| | - Zhangjun Yun
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, 100700, China
- Beijing University of Chinese Medicine, Beijing, 100102, China
| | - Jiaxin Zhang
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, 100700, China.
- Institute of Liver Diseases, Beijing University of Chinese Medicine, Beijing, China.
| | - Xiaoke Li
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, 100700, China.
- Institute of Liver Diseases, Beijing University of Chinese Medicine, Beijing, China.
| | - Yong'an Ye
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, 100700, China.
- Institute of Liver Diseases, Beijing University of Chinese Medicine, Beijing, China.
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Guo JZ, Xiao Q, Wu L, Chen F, Yin JL, Qin X, Gong TT, Wu QJ. Ovarian Cancer and Parkinson's Disease: A Bidirectional Mendelian Randomization Study. J Clin Med 2023; 12:jcm12082961. [PMID: 37109305 PMCID: PMC10146810 DOI: 10.3390/jcm12082961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 02/25/2023] [Accepted: 03/10/2023] [Indexed: 04/29/2023] Open
Abstract
(1) Background: Ovarian cancer (OC) and Parkinson's disease (PD) represent a huge public health burden. The relationship of these two diseases is suggested in the literature while not fully understood. To better understand this relationship, we conducted a bidirectional Mendelian ran-domization analysis using genetic markers as a proxy. (2) Methods: Utilizing single nucleotide polymorphisms associated with PD risk, we assessed the association between genetically predicted PD and OC risk, overall and by histotypes, using summary statistics from previously conducted genome-wide association studies of OC within the Ovarian Cancer Association Consortium. Similarly, we assessed the association between genetically predicted OC and PD risk. The inverse variance weighted method was used as the main method to estimate odds ratios (OR) and 95% confidence intervals (CI) for the associations of interest. (3) Results: There was no significant association between genetically predicted PD and OC risk: OR = 0.95 (95% CI: 0.88-1.03), or between genetically predicted OC and PD risk: OR = 0.80 (95% CI: 0.61-1.06). On the other hand, when examined by histotypes, a suggestive inverse association was observed between genetically predicted high grade serous OC and PD risk: OR = 0.91 (95% CI: 0.84-0.99). (4) Conclusions: Overall, our study did not observe a strong genetic association between PD and OC, but the observed potential association between high grade serous OC and reduced PD risk warrants further investigation.
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Affiliation(s)
- Jian-Zeng Guo
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang 110004, China
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Qian Xiao
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang 110004, China
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Lang Wu
- Cancer Epidemiology Division, Population Sciences in the Pacific Program, University of Hawaii Cancer Center, University of Hawaii at Manoa, Honolulu, HI 96813, USA
| | - Fa Chen
- Fujian Provincial Key Laboratory of Environment Factors and Cancer, Department of Epidemiology and Health Statistics, School of Public Health, Fujian Medical University, Fuzhou 350122, China
| | - Jia-Li Yin
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang 110004, China
- Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang 110004, China
- Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Xue Qin
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Ting-Ting Gong
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Qi-Jun Wu
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang 110004, China
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang 110004, China
- Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang 110004, China
- Key Laboratory of Precision Medical Research on Major Chronic Disease, Shengjing Hospital of China Medical University, Shenyang 110004, China
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Cherrie JW, Cherrie MPC. Workplace exposure to UV radiation and strategies to minimize cancer risk. Br Med Bull 2022; 144:45-56. [PMID: 35973164 PMCID: PMC9744745 DOI: 10.1093/bmb/ldac019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 07/01/2022] [Accepted: 07/22/2022] [Indexed: 12/24/2022]
Abstract
BACKGROUND Workplace exposure to solar ultraviolet (UV) causes malignant melanoma and non-melanoma skin cancer. The evidence for beneficial effects of solar UV exposure in reducing the risks for other cancers is increasing. The intensity of UV radiation at the Earth's surface is dependent on latitude, but even in northern European countries exposure can be high enough for outdoor work to cause skin cancer. GROWING POINTS Awareness of the health risks and benefits of occupational solar UV exposure is poor. Actions to reduce the risk of skin cancer have been identified and employers should recognize their responsibility to actively manage these risks. There is evidence for reduced risks for breast, ovarian and colorectal cancer and possibly other cancers linked to solar UV exposure. SOURCES OF DATA This narrative review draws on published scientific articles and material designed to assist identifying strategies to protect workers from solar UV exposure. AREAS OF AGREEMENT Solar UV exposure can be harmful. Wavelengths in the UVB range are more effective in causing erythema and DNA damage. Solar UV is the main source of vitamin D for most people. Primary and secondary prevention for skin cancer can potentially eliminate these risks but the evidence for effectiveness is limited. AREAS OF CONTROVERSY Potential health benefits of UV exposure, particularly for reduced cancer risk. Determining and communicating optimal exposure to maximize health benefits. The risk of non-melanoma skin cancers may be more than doubled for some workers in temperate latitudes. AREAS TIMELY FOR DEVELOPING RESEARCH Exposure-response epidemiological studies; studies of the health benefits of occupational UV exposure; studies of the effectiveness of intervention strategies to prevent skin cancer. Use of low-cost UV sensors in workplaces.
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Affiliation(s)
- J W Cherrie
- IOM, Research Avenue North, Edinburgh EH14 4AP, UK.,Institute of Biological Chemistry, Biophysics and Bioengineering, Heriot Watt University, Edinburgh EH14 4AS, UK
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Deng Y, Huang J, Wong MCS. Associations between six dietary habits and risk of hepatocellular carcinoma: A Mendelian randomization study. Hepatol Commun 2022; 6:2147-2154. [PMID: 35670026 PMCID: PMC9315115 DOI: 10.1002/hep4.1960] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/10/2022] [Accepted: 03/26/2022] [Indexed: 11/08/2022] Open
Abstract
Diet is reported to be associated with hepatocellular carcinoma (HCC), but whether there is a causal relationship remains unclear. This study aimed to explore the potential causal associations between dietary habits and HCC risk using Mendelian randomization in an East Asian population. From the BioBank Japan, we obtained summary-level genome-wide association studies data for the following six dietary habits: ever/never drinker (n = 165,084), alcohol consumption (n = 58,610), coffee consumption (n = 152,634), tea consumption (n = 152,653), milk consumption (n = 152,965), and yoghurt consumption (n = 152,097). We also obtained data on HCC (1866 cases and 195,745 controls). Single-nucleotide polymorphisms (SNPs) that were associated with exposures (p < 5 × 10-8 ) were selected as instrumental variables (IVs). Five, two, and six SNPs were identified for ever/never drinkers, alcohol consumption, and coffee consumption. One SNP was used for consumption of tea, milk, and yoghurt. The odds ratios (ORs) and 95% confidence intervals (CIs) were calculated by inverse variance weighted (for an IV with more than one SNP) or Wald ratio (for an IV with one SNP). Ever/never drinkers (OR, 1.11; 95% CI, 1.05-1.18; p < 0.001) and alcohol consumption (OR, 1.57; 95% CI, 1.32-1.86; p < 0.001) were positively associated with HCC risk. Conversely, coffee consumption was inversely related to HCC risk (OR, 0.69; 95% CI, 0.53-0.90; p = 0.007). Similar inverse associations were observed for consumption of tea, milk, and yoghurt, with ORs (95% CIs) of 0.11 (0.05-0.26), 0.18 (0.09-0.34), and 0.18 (0.09-0.34), respectively (all p < 0.001). Conclusion: There are potential causal associations between six dietary habits and HCC risk. Our findings inform clinical practice by providing evidence on the impact of dietary habits on HCC.
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Affiliation(s)
- Yunyang Deng
- The Jockey Club School of Public Health and Primary CareFaculty of MedicineChinese University of Hong KongHong Kong SARChina
| | - Junjie Huang
- The Jockey Club School of Public Health and Primary CareFaculty of MedicineChinese University of Hong KongHong Kong SARChina
| | - Martin C S Wong
- The Jockey Club School of Public Health and Primary CareFaculty of MedicineChinese University of Hong KongHong Kong SARChina.,School of Public HealthChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina.,School of Public HealthPeking UniversityBeijingChina
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9
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Hu J, Xu Z, Ye Z, Li J, Hao Z, Wang Y. The association between single nucleotide polymorphisms and ovarian cancer risk: A systematic review and network meta-analysis. Cancer Med 2022; 12:541-556. [PMID: 35637613 PMCID: PMC9844622 DOI: 10.1002/cam4.4891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 05/10/2022] [Accepted: 05/16/2022] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND The relationship between single nucleotide polymorphisms (SNPs) and ovarian cancer (OC) risk remains controversial. This systematic review and network meta-analysis was aimed to determine the association between SNPs and OC risk. METHODS Several databases (PubMed, EMBASE, China National Knowledge Infrastructure, Wanfang databases, China Science and Technology Journal Database, and China Biology Medicine disc) were searched to summarize the association between SNPs and OC published throughout April 2021. Direct meta-analysis was used to identify SNPs that could predict the incidence of OC. Ranking probability resulting from network meta-analysis and the Thakkinstian's algorithm was used to select the most appropriate gene model. The false positive report probability (FPRP) and Venice criteria were further tested for credible relationships. Subgroup analysis was also carried out to explore whether there are racial differences. RESULTS A total of 63 genes and 92 SNPs were included in our study after careful consideration. Fok1 rs2228570 is likely a dominant risk factor for the development of OC compared to other selected genes. The dominant gene model of Fok1 rs2228570 (pooled OR = 1.158, 95% CI: 1.068-1.256) was determined to be the most suitable model with a FPRP <0.2 and moderate credibility. CONCLUSIONS Fok1 rs2228570 is closely linked to OC risk, and the dominant gene model is likely the most appropriate model for estimating OC susceptibility.
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Affiliation(s)
- Jia Hu
- Department of GastroenterologyThe Second Xiangya Hospital, Central South UniversityChangshaChina,Research Center of Digestive DiseaseThe Second Xiangya Hospital, Central South UniversityChangshaChina
| | - Zhe Xu
- Department of Pharmacy, Xiangya HospitalCentral South UniversityChangshaChina
| | - Zhuomiao Ye
- Department of Oncology, Xiangya HospitalCentral South UniversityChangshaChina
| | - Jin Li
- Xiangya School of MedicineCentral South UniversityChangshaChina
| | - Zhinan Hao
- Department of Gastrointestinal SurgeryHebei General HospitalShijiazhuangChina
| | - Yongjun Wang
- Department of GastroenterologyThe Second Xiangya Hospital, Central South UniversityChangshaChina,Research Center of Digestive DiseaseThe Second Xiangya Hospital, Central South UniversityChangshaChina
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Gong TT, Wei YF, Li XY, Liu FH, Wen ZY, Yan S, Qin X, Gao S, Li XQ, Zhao YH, Wu QJ. Pre-diagnostic dietary consumption of calcium and magnesium and calcium-to-magnesium intake ratio and ovarian cancer mortality: results from the ovarian cancer follow-up study (OOPS). Eur J Nutr 2022; 61:3487-3497. [PMID: 35596007 DOI: 10.1007/s00394-022-02883-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 03/31/2022] [Indexed: 12/13/2022]
Abstract
PURPOSE Previous studies have indicated that dietary consumption of calcium (Ca), magnesium (Mg), and the Ca-to-Mg (Ca:Mg) ratio were associated with different health outcomes. However, no study has evaluated the association of pre-diagnostic Ca, Mg, and Ca:Mg ratio consumption with ovarian cancer (OC) survival. METHODS The aforementioned associations were investigated in a cohort of 853 Chinese women diagnosed with OC between 2015 and 2020. A validated food frequency questionnaire was used to evaluate pre-diagnostic diet information. Deaths were recorded until March 31, 2021 via medical records and active follow-up. Cox proportional hazards model was applied to calculate the adjusted hazard ratios (HRs) and 95% confidence intervals (CIs). RESULTS A total of 130 deaths were observed during a median follow-up of 37.2 months. After adjustment for potential confounders, pre-diagnostic Ca (HR< 600 vs. > 1000 = 1.45, 95% CI = 0.47-4.46, p for trend = 0.69) and Mg (HR< 250 vs. > 330 = 0.90, 95% CI = 0.39-2.08, p for trend = 0.77) intakes were found to be unrelated to OC survival, whereas a higher Ca:Mg intake ratio was significantly associated with worse survival (HR< 1.7 vs. > 2.5 = 2.72, 95% CI = 1.28-5.78, p for trend < 0.05). A significant result was also observed when treating the Ca:Mg ratio as a continuous variable (HR = 1.69, 95% CI = 1.12-2.55) for one-unit increment. CONCLUSION Pre-diagnostic consumption of Ca and Mg was unrelated to OC survival, while a higher Ca:Mg intake ratio was strongly associated with worse survival among OC patients.
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Affiliation(s)
- Ting-Ting Gong
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, No. 36, San Hao Street, Shenyang, Liaoning, 110004, People's Republic of China
| | - Yi-Fan Wei
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, No. 36, San Hao Street, Shenyang, Liaoning, 110004, People's Republic of China.,Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Xin-Yu Li
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, No. 36, San Hao Street, Shenyang, Liaoning, 110004, People's Republic of China.,Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Fang-Hua Liu
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, No. 36, San Hao Street, Shenyang, Liaoning, 110004, People's Republic of China.,Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Zhao-Yan Wen
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, No. 36, San Hao Street, Shenyang, Liaoning, 110004, People's Republic of China.,Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Shi Yan
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, No. 36, San Hao Street, Shenyang, Liaoning, 110004, People's Republic of China.,Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Xue Qin
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, No. 36, San Hao Street, Shenyang, Liaoning, 110004, People's Republic of China.
| | - Song Gao
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, No. 36, San Hao Street, Shenyang, Liaoning, 110004, People's Republic of China
| | - Xiu-Qin Li
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, No. 36, San Hao Street, Shenyang, Liaoning, 110004, People's Republic of China
| | - Yu-Hong Zhao
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, No. 36, San Hao Street, Shenyang, Liaoning, 110004, People's Republic of China.,Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Qi-Jun Wu
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, No. 36, San Hao Street, Shenyang, Liaoning, 110004, People's Republic of China. .,Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, No. 36, San Hao Street, Shenyang, Liaoning, 110004, People's Republic of China. .,Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China.
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11
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Mbutiwi FIN, Dessy T, Sylvestre MP. Mendelian Randomization: A Review of Methods for the Prevention, Assessment, and Discussion of Pleiotropy in Studies Using the Fat Mass and Obesity-Associated Gene as an Instrument for Adiposity. Front Genet 2022; 13:803238. [PMID: 35186031 PMCID: PMC8855149 DOI: 10.3389/fgene.2022.803238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 01/14/2022] [Indexed: 11/25/2022] Open
Abstract
Pleiotropy assessment is critical for the validity of Mendelian randomization (MR) analyses, and its management remains a challenging task for researchers. This review examines how the authors of MR studies address bias due to pleiotropy in practice. We reviewed Pubmed, Medline, Embase and Web of Science for MR studies published before 21 May 2020 that used at least one single-nucleotide polymorphism (SNP) in the fat mass and obesity-associated (FTO) gene as instrumental variable (IV) for body mass index, irrespective of the outcome. We reviewed: 1) the approaches used to prevent pleiotropy, 2) the methods cited to detect or control the independence or the exclusion restriction assumption highlighting whether pleiotropy assessment was explicitly stated to justify the use of these methods, and 3) the discussion of findings related to pleiotropy. We included 128 studies, of which thirty-three reported one approach to prevent pleiotropy, such as the use of multiple (independent) SNPs combined in a genetic risk score as IVs. One hundred and twenty studies cited at least one method to detect or account for pleiotropy, including robust and other IV estimation methods (n = 70), methods for detection of heterogeneity between estimated causal effects across IVs (n = 72), methods to detect or account associations between IV and outcome outside thought the exposure (n = 85), and other methods (n = 5). Twenty-one studies suspected IV invalidity, of which 16 explicitly referred to pleiotropy, and six incriminating FTO SNPs. Most reviewed MR studies have cited methods to prevent or to detect or control bias due to pleiotropy. These methods are heterogeneous, their triangulation should increase the reliability of causal inference.
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Affiliation(s)
- Fiston Ikwa Ndol Mbutiwi
- University of Montreal Hospital Research Centre (CRCHUM), Montreal, QC, Canada
- Faculty of Medicine, University of Kikwit, Kikwit, Democratic Republic of the Congo
| | - Tatiana Dessy
- University of Montreal Hospital Research Centre (CRCHUM), Montreal, QC, Canada
| | - Marie-Pierre Sylvestre
- University of Montreal Hospital Research Centre (CRCHUM), Montreal, QC, Canada
- Department of Social and Preventive Medicine, University of Montreal Public Health School (ESPUM), Montreal, QC, Canada
- *Correspondence: Marie-Pierre Sylvestre,
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12
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Wu K, Liu L, Shu T, Li A, Xia D, Sun X. The relationship between processed meat, red meat, and risk of types of cancer: A Mendelian randomization study. Front Nutr 2022; 9:942155. [PMID: 36204379 PMCID: PMC9530935 DOI: 10.3389/fnut.2022.942155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 08/17/2022] [Indexed: 11/23/2022] Open
Abstract
Background Observational studies have suggested processed and red meat may increase the risk of cancer. However, the causal effects and direction between them were still unclear. We conducted two-sample Mendelian randomization (MR) analysis to evaluate the causal effect of processed meat and red meat on the risk of nine common types of cancer, namely, lung, ovarian, endometrial, breast, kidney, gastric, prostate, skin, and oropharyngeal cancer. Methods Genome-wide association studies (GWAS) for processed meat and red meat (pork, beef, and mutton) were obtained from the UK Biobank. GWAS of types of cancer in this study were extracted from the genetic consortia and the FinnGen consortium. The inverse variance weighted (IVW) was carried out as the main method for two-sample MR analysis. Sensitivity analyses were used to assess the robustness of the results. Results Genetically predicted processed meat intake was causally associated with increased risk of lung cancer (OR [odds ratio] = 1.923, 95% CI = 1.084-3.409, P = 0.025). There is no convincing evidence for the associations between genetically determined processed meat, red meat, and the risk of other cancers we studied. Conclusion Our results suggested that intake of processed meat may increase the risk of lung cancer. These findings provided no evidence to support that consumption of processed and red meat has a large effect on the risk of other cancers we studied. Further research is needed to clarify the results.
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Affiliation(s)
- Kaiwen Wu
- School of Medicine, Southwest Jiaotong University, Department of Gastroenterology, The Third People's Hospital of Chengdu, The Affiliated Hospital of Southwest Jiaotong University, Chengdu, China
| | - Lei Liu
- Medical Research Center, Third People's Hospital of Chengdu, Affiliated Hospital of Southwest Jiaotong University, Chengdu, China
| | - Tao Shu
- School of Medicine, Southwest Jiaotong University, Department of Gastroenterology, The Third People's Hospital of Chengdu, The Affiliated Hospital of Southwest Jiaotong University, Chengdu, China
| | - Aoshuang Li
- School of Medicine, Southwest Jiaotong University, Department of Gastroenterology, The Third People's Hospital of Chengdu, The Affiliated Hospital of Southwest Jiaotong University, Chengdu, China
| | - Demeng Xia
- Luodian Clinical Drug Research Center, Shanghai Baoshan Luodian Hospital, Shanghai University, Shanghai, China
| | - Xiaobin Sun
- School of Medicine, Southwest Jiaotong University, Department of Gastroenterology, The Third People's Hospital of Chengdu, The Affiliated Hospital of Southwest Jiaotong University, Chengdu, China
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