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Liu X, Wang M, Wang Q, Zhang H. A ubiquitin-proteasome system-related signature to predict prognosis, immune infiltration, and therapy efficacy for breast cancer. Immunol Res 2024; 72:368-382. [PMID: 38036900 DOI: 10.1007/s12026-023-09440-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 11/17/2023] [Indexed: 12/02/2023]
Abstract
The ubiquitin-proteasome system (UPS) is an essential regulatory system for maintaining homeostasis, and its dysfunction may cause various diseases. The activity of proteasome and ubiquitin-conjugating enzymes has been found to be greatly increased in breast cancer (BC), indicating that the heterogeneity of UPS may be related to the progression of BC. Gene data was obtained from The Cancer Genome Atlas and Gene Expression Omnibus databases and performed in multiple algorithms to construct a UPS-related signature for BC. Patients in the UPS low-risk group had greater overall and recurrence-free survival probability than those in the UPS high-risk group. This signature was closely associated with functional enrichment. Some high metabolism-related pathways were more active in the UPS high-risk group. The UPS low-risk group had more abundant anti-tumor immune cells, while in the UPS high-risk group, immunosuppressive cells were dominant. More importantly, we found that the UPS low-risk group was more sensitive to immunotherapy, while the UPS high-risk group responded better to radiotherapy. Drug sensitivity analysis identified more effective chemotherapy drugs in different UPS-related risk groups. This UPS-related signature may serve as a novel biomarker and independent prognostic factor for BC. It can effectively predict prognosis, immune infiltration, and therapy efficacy, providing new strategies for individualized treatment.
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Affiliation(s)
- Xiao Liu
- Department of Ultrasound, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Meihuan Wang
- Department of Ultrasound, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Qian Wang
- Department of Ultrasound, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China.
| | - Huawei Zhang
- Department of Ultrasound, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China.
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2
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Løyland B, Sandbekken IH, Grov EK, Utne I. Causes and Risk Factors of Breast Cancer, What Do We Know for Sure? An Evidence Synthesis of Systematic Reviews and Meta-Analyses. Cancers (Basel) 2024; 16:1583. [PMID: 38672665 PMCID: PMC11049405 DOI: 10.3390/cancers16081583] [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: 03/28/2024] [Revised: 04/17/2024] [Accepted: 04/18/2024] [Indexed: 04/28/2024] Open
Abstract
Breast cancer affected more than 2.3 million women in 2022 and is the most diagnosed cancer among women worldwide. The incidence rates are greater in developed regions and are significantly higher among women with higher education and socioeconomic status. Therefore, it is reasonable to assume that the way women live their lives may impact their risk of being diagnosed with breast cancer. This systematic review aimed to identify what is known about the causes and risk factors of breast cancer, excluding genetic causes. A comprehensive systematic search identified 2387 systematic reviews, 122 were included and six overall themes identified. In our "top list" with the 36 most important findings, a study of breast density had the highest effect size for increasing the risk of breast cancer, and a high sex-hormone-binding globulin level was the most protective factor. Many of the included studies investigating the same topics had conflicting results. The conclusion from this evidence synthesis reveals a lack of consensus of factors associated with the causes and risk of breast cancer. These findings suggest that recommendations about lifestyle and breast cancer should be made with caution.
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Affiliation(s)
- Borghild Løyland
- Department of Nursing and Health Promotion, Faculty of Health Sciences, Oslo Metropolitan University, 0130 Oslo, Norway; (I.H.S.); (E.K.G.); (I.U.)
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Sato Y, Yoshioka E, Saijo Y. Association of rotating night shift work with tooth loss and severe periodontitis among permanent employees in Japan: a cross-sectional study. PeerJ 2024; 12:e17253. [PMID: 38646481 PMCID: PMC11027908 DOI: 10.7717/peerj.17253] [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: 12/03/2023] [Accepted: 03/26/2024] [Indexed: 04/23/2024] Open
Abstract
Background The modern 24/7 society demands night shift work, which is a possible risk factor for chronic diseases. This study aimed to examine the associations of rotating night shift work duration with tooth loss and severe periodontitis. Methods This cross-sectional study used data from a self-administered questionnaire survey conducted among 3,044 permanent employees aged 20-64 years through a Japanese web research company in 2023. The duration of rotating night shift work was assessed using a question from the Nurses' Health Study. Tooth loss was assessed based on self-reported remaining natural teeth count. Severe periodontitis was assessed using a validated screening questionnaire comprising four questions related to gum disease, loose tooth, bone loss, and bleeding gums. We employed linear regression models for tooth loss and Poisson regression models for severe periodontitis, adjusting for demographic, health and work-related variables and socioeconomic status. Results Among participants included, 10.9% worked in rotating night shifts for 1-5 years, while 11.0% worked in such shifts for ≥6 years. In fully adjusted models, rotating night shift work duration of 1-5 years was associated with tooth loss (beta -0.74, 95% confidence interval (CI) [-1.55 to 0.08]) and severe periodontitis (prevalence ratio 1.80, 95% CI [1.33-2.43]); however, the association with tooth loss was not statistically significant. Conclusions This study supports that employees who work short-term rotating night shifts may experience poor oral conditions. Further research is needed to determine whether long-term rotating night shift work is associated with deteriorated oral health.
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Affiliation(s)
- Yukihiro Sato
- Department of Social Medicine, Asahikawa Medical University, Asahikawa, Hokkaido, Japan
| | - Eiji Yoshioka
- Department of Social Medicine, Asahikawa Medical University, Asahikawa, Hokkaido, Japan
| | - Yasuaki Saijo
- Department of Social Medicine, Asahikawa Medical University, Asahikawa, Hokkaido, Japan
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Windred DP, Burns AC, Lane JM, Saxena R, Rutter MK, Cain SW, Phillips AJK. Sleep regularity is a stronger predictor of mortality risk than sleep duration: A prospective cohort study. Sleep 2024; 47:zsad253. [PMID: 37738616 PMCID: PMC10782501 DOI: 10.1093/sleep/zsad253] [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] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 09/13/2023] [Indexed: 09/24/2023] Open
Abstract
Abnormally short and long sleep are associated with premature mortality, and achieving optimal sleep duration has been the focus of sleep health guidelines. Emerging research demonstrates that sleep regularity, the day-to-day consistency of sleep-wake timing, can be a stronger predictor for some health outcomes than sleep duration. The role of sleep regularity in mortality, however, has not been investigated in a large cohort with objective data. We therefore aimed to compare how sleep regularity and duration predicted risk for all-cause and cause-specific mortality. We calculated Sleep Regularity Index (SRI) scores from > 10 million hours of accelerometer data in 60 977 UK Biobank participants (62.8 ± 7.8 years, 55.0% female, median[IQR] SRI: 81.0[73.8-86.3]). Mortality was reported up to 7.8 years after accelerometer recording in 1859 participants (4.84 deaths per 1000 person-years, mean (±SD) follow-up of 6.30 ± 0.83 years). Higher sleep regularity was associated with a 20%-48% lower risk of all-cause mortality (p < .001 to p = 0.004), a 16%-39% lower risk of cancer mortality (p < 0.001 to p = 0.017), and a 22%-57% lower risk of cardiometabolic mortality (p < 0.001 to p = 0.048), across the top four SRI quintiles compared to the least regular quintile. Results were adjusted for age, sex, ethnicity, and sociodemographic, lifestyle, and health factors. Sleep regularity was a stronger predictor of all-cause mortality than sleep duration, by comparing equivalent mortality models, and by comparing nested SRI-mortality models with and without sleep duration (p = 0.14-0.20). These findings indicate that sleep regularity is an important predictor of mortality risk and is a stronger predictor than sleep duration. Sleep regularity may be a simple, effective target for improving general health and survival.
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Affiliation(s)
- Daniel P Windred
- Turner Institute for Brain and Mental Health, School of Psychological Sciences, Faculty of Medicine, Nursing and Health Sciences, Monash University, Melbourne, VIC, Australia
| | - Angus C Burns
- Turner Institute for Brain and Mental Health, School of Psychological Sciences, Faculty of Medicine, Nursing and Health Sciences, Monash University, Melbourne, VIC, Australia
- Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital, Boston, MA, USA
- Program in Medical and Population Genetics, Broad Institute, Cambridge, MA, USA
- Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Jacqueline M Lane
- Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital, Boston, MA, USA
- Program in Medical and Population Genetics, Broad Institute, Cambridge, MA, USA
- Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA, USA
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Richa Saxena
- Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital, Boston, MA, USA
- Program in Medical and Population Genetics, Broad Institute, Cambridge, MA, USA
- Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA, USA
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Martin K Rutter
- Centre for Biological Timing, Division of Endocrinology, Diabetes and Gastroenterology, School of Medical Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK
- Diabetes, Endocrinology and Metabolism Centre, NIHR Manchester Biomedical Research Centre, Manchester University NHS Foundation Trust, Manchester, UK
| | - Sean W Cain
- Turner Institute for Brain and Mental Health, School of Psychological Sciences, Faculty of Medicine, Nursing and Health Sciences, Monash University, Melbourne, VIC, Australia
| | - Andrew J K Phillips
- Turner Institute for Brain and Mental Health, School of Psychological Sciences, Faculty of Medicine, Nursing and Health Sciences, Monash University, Melbourne, VIC, Australia
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Frias-Gomez J, Alemany L, Benavente Y, Clarke MA, de Francisco J, De Vivo I, Du M, Goodman MT, Lacey J, Liao LM, Lipworth L, Lu L, Merritt MA, Michels KA, O'Connell K, Paytubi S, Pelegrina B, Peremiquel-Trillas P, Petruzella S, Ponce J, Risch H, Setiawan VW, Schouten LJ, Shu XO, Trabert B, Van den Brandt PA, Wentzensen N, Wilkens LR, Yu H, Costas L. Night shift work, sleep duration and endometrial cancer risk: A pooled analysis from the Epidemiology of Endometrial Cancer Consortium (E2C2). Sleep Med Rev 2023; 72:101848. [PMID: 37716022 PMCID: PMC10840870 DOI: 10.1016/j.smrv.2023.101848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 09/04/2023] [Accepted: 09/05/2023] [Indexed: 09/18/2023]
Abstract
Data on the role of circadian related factors in the etiology of endometrial cancer are scarce. We collected individual data on night shift work or daily sleep duration from 7,207 cases and 22,027 controls participating in 11 studies from the Epidemiology of Endometrial Cancer Consortium (E2C2). Main analyses were performed among postmenopausal women: 6,335 endometrial cancer cases and 18,453 controls. Using individual data, study-specific odd ratios (ORs) and their corresponding 95% confidence intervals (CIs) were estimated with logistic regression and pooled analyses were conducted using random-effects meta-analyses. A non-significant inverse association was observed between endometrial cancer and night shift work (OR=0.89, 95%CI=0.72-1.09; I2=0.0%, Pheterogeneity=0.676). Associations did not vary by shift type (permanent or rotating), or duration of night work. Categorizations of short (<7h) or long (≥9h) sleep duration were not associated with endometrial cancer risk (ORshort=1.02, 95%CI=0.95-1.10; I2=55.3%, Pheterogeneity=0.022; ORlong=0.93, 95%CI=0.81-1.06; I2=11.5%, Pheterogeneity=0.339). No associations were observed per 1-h increment of sleep (OR=0.98, 95%CI=0.95-1.01; I2=46.1%, Pheterogeneity=0.063), but an inverse association was identified among obese women (OR=0.93, 95%CI=0.89-0.98 per 1-h increment; I2=12.7%, Pheterogeneity=0.329). Overall, these pooled analyses provide evidence that night shift work and sleep duration are not strong risk factors for endometrial cancer in postmenopausal women.
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Affiliation(s)
- Jon Frias-Gomez
- Cancer Epidemiology Research Programme. IDIBELL. Catalan Institute of Oncology. Hospitalet de Llobregat, Barcelona, Spain; University of Barcelona (UB), Barcelona, Spain; Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - Laia Alemany
- Cancer Epidemiology Research Programme. IDIBELL. Catalan Institute of Oncology. Hospitalet de Llobregat, Barcelona, Spain; Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - Yolanda Benavente
- Cancer Epidemiology Research Programme. IDIBELL. Catalan Institute of Oncology. Hospitalet de Llobregat, Barcelona, Spain; Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - Megan A Clarke
- Division of Cancer Epidemiology and Genetics, Clinical Genetics Branch, National Cancer Institute, Rockville, MD, USA
| | - Javier de Francisco
- Department of Anesthesiology. Hospital Universitari de Bellvitge, IDIBELL. Hospitalet de Llobregat, Barcelona, Spain
| | - Immaculata De Vivo
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, 02115, USA
| | - Mengmeng Du
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Marc T Goodman
- Cedars-Sinai Cancer and Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - James Lacey
- Division of Health Analytics, Department of Computational and Quantitative Medicine, Beckman Research Institute of the City of Hope National Medical Center, Duarte, CA, USA
| | - Linda M Liao
- Division of Cancer Epidemiology and Genetics, Metabolic Epidemiology Branch, National Cancer Institute, Bethesda, MD, USA
| | - Loren Lipworth
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Lingeng Lu
- Chronic Disease Epidemiology Department, Yale School of Public Health, Yale University, New Haven, CT 06510, USA
| | - Melissa A Merritt
- The Daffodil Centre, The University of Sydney, Joint Venture with Cancer Council NSW, Sydney, NSW, Australia; Sydney School of Public Health, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia
| | - Kara A Michels
- Division of Cancer Epidemiology and Genetics, Metabolic Epidemiology Branch, National Cancer Institute, Bethesda, MD, USA; Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Kelli O'Connell
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Sonia Paytubi
- Cancer Epidemiology Research Programme. IDIBELL. Catalan Institute of Oncology. Hospitalet de Llobregat, Barcelona, Spain; Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - Beatriz Pelegrina
- Cancer Epidemiology Research Programme. IDIBELL. Catalan Institute of Oncology. Hospitalet de Llobregat, Barcelona, Spain
| | - Paula Peremiquel-Trillas
- Cancer Epidemiology Research Programme. IDIBELL. Catalan Institute of Oncology. Hospitalet de Llobregat, Barcelona, Spain; University of Barcelona (UB), Barcelona, Spain; Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - Stacey Petruzella
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Jordi Ponce
- Department of Gynecology, Hospital Universitari de Bellvitge, IDIBELL. Hospitalet de Llobregat, Barcelona, Spain
| | - Harvey Risch
- Chronic Disease Epidemiology Department, Yale School of Public Health, Yale University, New Haven, CT 06510, USA
| | - Veronica Wendy Setiawan
- Department of Preventive Medicine and Norris Comprehensive Cancer Center, Keck School of Medicine of University of Southern California, Los Angeles, CA, USA
| | - Leo J Schouten
- Department of Epidemiology, GROW School for Oncology and Reproduction, Maastricht University, the Netherlands
| | - Xiao-Ou Shu
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Britton Trabert
- Department of Obstetrics and Gynecology, University of Utah, Huntsman Cancer Institute at the University of Utah, Salt Lake City, UT, USA
| | - Piet A Van den Brandt
- Department of Epidemiology, GROW School for Oncology and Reproduction, Maastricht University, the Netherlands
| | - Nicolas Wentzensen
- Division of Cancer Epidemiology and Genetics, Clinical Genetics Branch, National Cancer Institute, Rockville, MD, USA
| | - Lynne R Wilkens
- Epidemiology Program, University of Hawaii Cancer Center, Honolulu, HI, USA
| | - Herbert Yu
- Epidemiology Program, University of Hawaii Cancer Center, Honolulu, HI, USA
| | - Laura Costas
- Cancer Epidemiology Research Programme. IDIBELL. Catalan Institute of Oncology. Hospitalet de Llobregat, Barcelona, Spain; Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain.
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Choi J, Lee DW, Choi BY, Ryoo SW, Kim T, Hong YC. Increased breast cancer incidence among nurses in a tertiary university hospital in South Korea. Ann Occup Environ Med 2023; 35:e44. [PMID: 38148921 PMCID: PMC10751212 DOI: 10.35371/aoem.2023.35.e44] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 10/31/2023] [Accepted: 11/02/2023] [Indexed: 12/28/2023] Open
Abstract
Background A series of breast cancer cases were recently reported in a tertiary university hospital in South Korea. Nurses are generally exposed to risk factors for breast cancer such as night shift work, antineoplastic agents, and job strain. However, the epidemiological evidence of excess incidence among nurses remains lacking. This study aims to investigate the excess incidence of breast cancer among nurses in a tertiary university hospital and provide epidemiological evidence of occupational risk factors. Methods A retrospective cohort was developed using personnel records of female workers in the nursing department who worked from January 2011 to June 2021 in a tertiary university hospital in South Korea. Sick leave records were used to identify cases of breast cancer. The standardized incidence ratio of breast cancer among nurses was compared to the general population. Results A total of 5,509 nurses were followed up for 30,404 person-years, and 26 breast cancer cases were identified. This study revealed a significantly increased breast cancer incidence among all included nurses, with a standardized incidence ratio of 1.65 (95% confidence interval [CI]: 1.08-2.41), compared to the general population. Workers, who handle antineoplastic agents in their representative department and current and/or former department, had significantly elevated breast cancer standardized incidence ratios of 2.73 (95% CI: 1.008-5.94) and 3.39 (95% CI: 1.46-6.68), respectively. Conclusions This study provides significant evidence of increased breast cancer risk among nursing staff in a hospital setting, particularly those who handle antineoplastic drugs. Measures that reduce exposure to risk factors should be implemented, especially anticancer drugs, to protect healthcare professionals. Further research at a national level that focuses on healthcare workers is necessary to validate breast cancer incidence and its contributing factors.
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Affiliation(s)
- Juho Choi
- Department of Preventive Medicine, Seoul National University, College of Medicine, Seoul, Korea
| | - Dong-Wook Lee
- Department of Occupational and Environmental Medicine, Inha University Hospital, Inha University, Incheon, Korea
| | - Baek-Yong Choi
- Department of Preventive Medicine, Seoul National University, College of Medicine, Seoul, Korea
| | - Seung-Woo Ryoo
- Department of Preventive Medicine, Seoul National University, College of Medicine, Seoul, Korea
| | - Taeshik Kim
- Department of Public Health and Community Medicine, Seoul Metropolitan Government–Seoul National University Boramae Medical Center, Seoul, Korea
| | - Yun-Chul Hong
- Department of Preventive Medicine, Seoul National University, College of Medicine, Seoul, Korea
- Institute of Environmental Medicine, Seoul National University Medical Research Center, Seoul, Korea
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7
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Gao Y, Fu X, Hu H, Li T, Yuan L, Zhang J, Wu Y, Wang M, Ke Y, Li X, Hu F, Zhang M, Sun L, Wen H, Guan R, Gao P, Chai W, Zhao Y, Hu D. Impact of shift work on dementia: a systematic review and dose-response meta-analysis. Public Health 2023; 223:80-86. [PMID: 37625271 DOI: 10.1016/j.puhe.2023.07.029] [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: 05/09/2023] [Revised: 06/26/2023] [Accepted: 07/21/2023] [Indexed: 08/27/2023]
Abstract
OBJECTIVES Although shift work has been reported as having a link to dementia, evidence remains inconsistent, and a comprehensive dose-response meta-analysis of the association is still lacking. We therefore conducted this meta-analysis to explore the association between shift work and the risk of dementia. STUDY DESIGN Systematic review and dose-response meta-analysis. METHODS PubMed, Embase, and Web of Science databases were systematically searched. Fixed or random-effects models were used to estimate the summary relative risks (RRs) and 95% confidence intervals (95% CIs). Generalized least squares regression was used to estimate dose-response associations, and restricted cubic splines were used to examine possible linear or non-linear associations. RESULTS Five articles (10 studies) with 72,999 participants and 23,067 cases were eventually included in the meta-analysis. The summary RRs and 95% CIs of dementia risk with shift work and night shift work versus daytime work were 1.13 (95% CI: 1.05-1.21, I2 = 46.70%) and 1.13 (95% CI: 1.03-1.24, I2 = 9.20%), respectively. The risk of dementia increased by 1% (RR = 1.01, 95% CI: 1.01-1.02, I2 = 41.3%) with each 1-year increase in the duration of shift work. We found a non-linear dose-response association between the duration of shift work and the risk of dementia (Pnon-linearity = 0.006). Though the shape of the curve was steeper with the duration of shift work <7 years, the increase was more gradual after 7 years. CONCLUSION Our findings suggest that shift work may be a risk factor for future dementia and that controlling the length of shift work is a feasible measure that may contribute to prevent dementia.
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Affiliation(s)
- Y Gao
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China
| | - X Fu
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China
| | - H Hu
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China
| | - T Li
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China
| | - L Yuan
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China
| | - J Zhang
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China
| | - Y Wu
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China
| | - M Wang
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China
| | - Y Ke
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China
| | - X Li
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China
| | - F Hu
- Department of Biostatistics and Epidemiology, School of Public Health, Shenzhen University Medical School, Shenzhen, Guangdong, 518060, People's Republic of China
| | - M Zhang
- Department of Biostatistics and Epidemiology, School of Public Health, Shenzhen University Medical School, Shenzhen, Guangdong, 518060, People's Republic of China
| | - L Sun
- Department of Social Medicine and Health Management, College of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China
| | - H Wen
- Department of Clinical Medicine, Zhengzhou Shuqing Medical College, 6 Gongming Road, Erqi District, Zhengzhou, Henan, 450064, People's Republic of China
| | - R Guan
- Department of Famarcy, Shenzhen University General Hospital, Shenzhen, Guangdong, 518055, People's Republic of China
| | - P Gao
- Department of Neurology, Shenzhen University General Hospital, Shenzhen, Guangdong, 518055, People's Republic of China
| | - W Chai
- Department of Neurology, Shenzhen University General Hospital, Shenzhen, Guangdong, 518055, People's Republic of China
| | - Y Zhao
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China
| | - D Hu
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China.
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8
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Drosdowsky A, Lamb KE, Karahalios A, Bergin RJ, Milley K, Boyd L, IJzerman MJ, Emery JD. The effect of time before diagnosis and treatment on colorectal cancer outcomes: systematic review and dose-response meta-analysis. Br J Cancer 2023; 129:993-1006. [PMID: 37528204 PMCID: PMC10491798 DOI: 10.1038/s41416-023-02377-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 06/28/2023] [Accepted: 07/24/2023] [Indexed: 08/03/2023] Open
Abstract
BACKGROUND This systematic review and meta-analysis aimed to evaluate existing evidence on the relationship between diagnostic and treatment intervals and outcomes for colorectal cancer. METHODS Four databases were searched for English language articles assessing the role of time before initial treatment in colorectal cancer on any outcome, including stage and survival. Two reviewers independently screened articles for inclusion and data were synthesised narratively. A dose-response meta-analysis was performed to examine the association between treatment interval and survival. RESULTS One hundred and thirty papers were included in the systematic review, eight were included in the meta-analysis. Forty-five different intervals were considered in the time from first symptom to treatment. The most common finding was of no association between the length of intervals on any outcome. The dose-response meta-analysis showed a U-shaped association between the treatment interval and overall survival with the nadir at 45 days. CONCLUSION The review found inconsistent, but mostly a lack of, association between interval length and colorectal cancer outcomes, but study design and quality were heterogeneous. Meta-analysis suggests survival becomes increasingly poorer for those commencing treatment more than 45 days after diagnosis. REGISTRATION This review was registered, and the protocol is available, in PROSPERO, the international database of systematic reviews, with the registration ID CRD42021255864.
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Affiliation(s)
- Allison Drosdowsky
- Department of General Practice and Centre for Cancer Research, The University of Melbourne, Parkville, VIC, Australia.
| | - Karen E Lamb
- Melbourne School of Population and Global Health, The University of Melbourne, Parkville, VIC, Australia
| | - Amalia Karahalios
- Melbourne School of Population and Global Health, The University of Melbourne, Parkville, VIC, Australia
| | - Rebecca J Bergin
- Department of General Practice and Centre for Cancer Research, The University of Melbourne, Parkville, VIC, Australia
- Cancer Epidemiology Division, Cancer Council Victoria, Melbourne, VIC, Australia
| | - Kristi Milley
- Department of General Practice and Centre for Cancer Research, The University of Melbourne, Parkville, VIC, Australia
- Primary Care Collaborative Cancer Clinical Trials Group (PC4), Carlton, VIC, Australia
| | - Lucy Boyd
- Department of General Practice and Centre for Cancer Research, The University of Melbourne, Parkville, VIC, Australia
| | - Maarten J IJzerman
- Melbourne School of Population and Global Health, The University of Melbourne, Parkville, VIC, Australia
| | - Jon D Emery
- Department of General Practice and Centre for Cancer Research, The University of Melbourne, Parkville, VIC, Australia
- Primary Care Collaborative Cancer Clinical Trials Group (PC4), Carlton, VIC, Australia
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Dobrowolska-Zrałka K, Kujawa K, Regulska-Ilow B. Association of the Length of Service of 24/48 Firefighters with the Quality of Their Diet and Selected Anthropometric Parameters. Nutrients 2023; 15:4029. [PMID: 37764812 PMCID: PMC10536748 DOI: 10.3390/nu15184029] [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: 08/22/2023] [Revised: 09/13/2023] [Accepted: 09/15/2023] [Indexed: 09/29/2023] Open
Abstract
The aim of the study was to examine the association of lengths of service (LS) ≤ 10 years and >10 years in 24/48 shifts with the quality of the observed diet based on the Nutrient Rich Food Index (NRF9.3) and selected anthropometric parameters of 130 firefighters of the State Fire Service (SFS) in Wroclaw, Poland. The study also analysed the individual components of the men's diets required to calculate the NRF9.3 index in both seniority groups. Men with LS > 10 years had statistically significant higher body weight (89.00 kg vs. 81.59 kg), body-fat level (22.80 kg vs. 17.95 kg), waist circumference (96.50 cm vs. 89.00 cm), body-fat percentage (21.94 ± 4.06% vs. 25.00 ± 5.45%), body mass index (BMI) (28.10 kg/m2 vs. 25.40 kg/m2) and waist-hip ratio (WHR) (0.84 0.92 vs. 0.84), compared to the LF ≤ 10 years group. In contrast, the quality of the men's dietary adherence, based on the calculated NRF9.3 index, did not differ between the study groups, and was 662.50 ± 103.1 and 664.78 for the LS ≤ 10 years and LS > 10 years groups, respectively. Based on a statistical analysis using the NRF9.3 diet quality index by tertile (NRF9.3-C), a leading and statistically significant association of LS > 10 years vs. ≤10 years was observed as to most of the anthropometric parameters studied. In contrast, the association of participants' diet quality, as assessed by the NRF9.3 index value, was insignificant for all anthropometric parameters studied.
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Affiliation(s)
- Karolina Dobrowolska-Zrałka
- Department of Dietetics and Bromatology, Wroclaw Medical University, ul. Borowska 211, 50-556 Wroclaw, Poland;
| | - Krzysztof Kujawa
- Statistical Analysis Centre, Wroclaw Medical University, ul. K. Marcinkowskiego 2-6, 50-368 Wroclaw, Poland;
| | - Bożena Regulska-Ilow
- Department of Dietetics and Bromatology, Wroclaw Medical University, ul. Borowska 211, 50-556 Wroclaw, Poland;
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10
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Masoudkabir F, Mohammadifard N, Mani A, Ignaszewski A, Davis MK, Vaseghi G, Mansourian M, Franco C, Gotay C, Sarrafzadegan N. Shared Lifestyle-Related Risk Factors of Cardiovascular Disease and Cancer: Evidence for Joint Prevention. ScientificWorldJournal 2023; 2023:2404806. [PMID: 37520844 PMCID: PMC10386903 DOI: 10.1155/2023/2404806] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 02/25/2023] [Accepted: 06/09/2023] [Indexed: 08/01/2023] Open
Abstract
Cardiovascular disease (CVD) and cancer are leading causes of mortality and morbidity worldwide and are the major focus of the World Health Organization's joint prevention programs. While, diverse diseases, CVD and cancer, have many similarities. These include common lifestyle-related risk factors and shared environmental, metabolic, cellular, inflammatory, and genetic pathways. In this review, we will discuss the shared lifestyle-related and environmental risk factors central to both diseases and how the strategies commonly used to prevent atherosclerotic vascular disease can be applied to cancer prevention.
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Affiliation(s)
- Farzad Masoudkabir
- Cardiac Primary Prevention Research Center, Cardiovascular Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Noushin Mohammadifard
- Hypertension Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Arya Mani
- Yale Cardiovascular Genetics Program, Yale Cardiovascular Research Center, Department of Internal Medicine, Yale University School of Medicine, New Haven, CT, USA
| | - Andrew Ignaszewski
- Division of Cardiology, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Margot K. Davis
- Division of Cardiology, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Golnaz Vaseghi
- Applied Physiology Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Marjan Mansourian
- Epidemiology and Biostatistics Department, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Christopher Franco
- Division of Cardiology, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Carolyn Gotay
- School of Population & Public Health, The University of British Columbia, Vancouver, BC, Canada
| | - Nizal Sarrafzadegan
- Isfahan Cardiovascular Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
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11
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Jelmini JD, Ross J, Whitehurst LN, Heebner NR. The effect of extended shift work on autonomic function in occupational settings: A systematic review and meta-analysis. J Occup Health 2023; 65:e12409. [PMID: 37287085 PMCID: PMC10247865 DOI: 10.1002/1348-9585.12409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 04/28/2023] [Accepted: 05/12/2023] [Indexed: 06/09/2023] Open
Abstract
OBJECTIVE To examine the effect of 24-h shift work on autonomic nervous system function via heart rate variability (HRV) methodologies. METHODS Electronic databases (indexed in either PubMed, MEDLINE, CINAHL, SPORTDiscus, or OpenDissertations) were searched from January 1964 to March 2023. A modified Downs and Black checklist was used for assessing methodological quality and the Grading of Recommendation, Assessment, Development, and Evaluation (GRADE) approach was used to evaluate the quality of evidence. Study design, study population, study sample, shift work description, and assessment of HRV metrics and methods were extracted from each study. FINDINGS A total of 58 478 study articles were identified, of which 12 articles met inclusion criteria. Sample sizes varied from eight to 60 participants, with the ratio of low- to high-frequency HRV (LF/HF) as the most common frequency-domain variable reported. Of the nine included studies that observed LF/HF, three (33.3%) demonstrated a significant increase after 24-h shift work. Moreover, of the five studies that reported HF, two (40%) noted a significant decrease after 24-h shift work. When observing risk of bias, two (16.6%) studies were low quality, five (41.7%) were moderate quality, and five (41.7%) were high quality. INTERPRETATION There were inconsistent findings demonstrating an effect of 24-h shift work on autonomic function, with a suggested shift away from parasympathetic dominance. Discrepancies in HRV methodologies, such as the duration of recordings and hardware used for measurement, may have contributed to the disparity in findings. In addition, differences in roles and responsibilities across occupations may explain the incongruence in findings across studies.
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Affiliation(s)
- Jacob D. Jelmini
- College of Health Sciences, Sports Medicine Research InstituteUniversity of KentuckyLexingtonKentuckyUSA
| | - Jeremy Ross
- College of Health Sciences, Sports Medicine Research InstituteUniversity of KentuckyLexingtonKentuckyUSA
| | | | - Nicholas R. Heebner
- College of Health Sciences, Sports Medicine Research InstituteUniversity of KentuckyLexingtonKentuckyUSA
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12
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Liao H, Pan D, Deng Z, Jiang J, Cai J, Liu Y, He B, Lei M, Li H, Li Y, Xu Y, Tang Y. Association of shift work with incident dementia: a community-based cohort study. BMC Med 2022; 20:484. [PMID: 36522755 PMCID: PMC9753386 DOI: 10.1186/s12916-022-02667-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 11/17/2022] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Some observational studies had found that shift work would increase risks of metabolic disorders, cancers, and cardiovascular diseases, but there was no homogeneous evidence of such an association between shift work and incident dementia. This study aimed to investigate whether shift work would increase the risk of dementia in a general population. METHODS One hundred seventy thousand seven hundred twenty-two employed participants without cognitive impairment or dementia at baseline recruited between 2006 and 2010 were selected from the UK Biobank cohort study. Follow-up occurred through June 2021. Shift work status at baseline was self-reported by participants and they were categorized as non-shift workers or shift workers. Among shift workers, participants were further categorized as night shift workers or shift but non-night shift workers. The primary outcome was all-cause dementia in a time-to-event analysis, and the secondary outcomes were subtypes of dementia, including Alzheimer's disease, vascular dementia, and other types of dementia. RESULTS In total, 716 dementia cases were observed among 170,722 participants over a median follow-up period of 12.4 years. Shift workers had an increased risk of all-cause dementia as compared with non-shift workers after multivariable adjustment (hazard ratio [HR], 1.30, 95% confidence interval [CI], 1.08-1.58); however, among shift workers, night shift work was not associated with the risk of dementia (HR, 1.04, 95% CI, 0.73-1.47). We found no significant interaction between shift work and genetic predisposition to dementia on the primary outcome (P for interaction = 0.77). CONCLUSIONS Shift work at baseline was associated with an increased risk of all-cause dementia. Among shift workers, there was no significant association between night shift work and the risk of dementia. The increased incidence of dementia in shift workers did not differ between participants in different genetic risk strata for dementia.
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Affiliation(s)
- Huanquan Liao
- Department of Neurology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, People's Republic of China
- Department of Neurology, the Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, 517108, People's Republic of China
| | - Dong Pan
- Department of Neurology, the Eighth Affiliated Hospital, Sun Yat-Sen University, Shenzhen, 518033, People's Republic of China
| | - Zhenhong Deng
- Department of Neurology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, People's Republic of China
| | - Jingru Jiang
- Department of Neurology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, People's Republic of China
| | - Jinhua Cai
- Department of Neurology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, People's Republic of China
| | - Ying Liu
- Department of Neurology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, People's Republic of China
| | - Baixuan He
- Department of Neurology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, People's Republic of China
| | - Ming Lei
- Department of Neurology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, People's Republic of China
| | - Honghong Li
- Department of Neurology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, People's Republic of China
| | - Yi Li
- Department of Neurology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, People's Republic of China
| | - Yongteng Xu
- Department of Neurology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, People's Republic of China
| | - Yamei Tang
- Department of Neurology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, People's Republic of China.
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, People's Republic of China.
- Guangdong Province Key Laboratory of Brain Function and Disease, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, 510062, People's Republic of China.
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13
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Hattori K, Sobue T, Zha L, Kitamura T, Shimomura Y, Iwasaki M, Inoue M, Yamaji T, Tsugane S, Sawada N. Association between working hours and cancer risk in Japan: The Japan public health center-based prospective study. J Occup Health 2022; 64:e12375. [PMID: 36502469 PMCID: PMC9741916 DOI: 10.1002/1348-9585.12375] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 10/19/2022] [Accepted: 11/15/2022] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVES In this study, we evaluated the association between working hours and cancer risk in the Japanese population, which has not been evaluated. METHODS Using a cohort database from a Japan Public Health Center-based Prospective Study, we evaluated 26 738 participants (16 351 men and 10 387 women), who responded to a questionnaire about working hours and followed these participants from 1993-1994 to 2013. Participants were divided into four groups according to working hours (≤6, 7-8, 9-10, ≥11 h/day). The hazard ratio (HR) and 95% confidence interval (CI) of each cancer incidence were calculated using a multivariable-adjusted Cox proportional hazard model. RESULTS During 488 383 person-years of follow-up, 481 patients with newly diagnosed cancers were identified. There was no clear association between long working hours and overall cancer, lung cancer, and stomach cancer risks. Long working hours tended to increase prostate cancer risk in men and breast cancer risk in women, although the difference was not statistically significant. Increased liver cancer risk with short working hours (HR [95% CI]; 3.15 [1.44-6.88] in the ≤6 h/day group vs. 7-8 h/day) was observed. Colorectal cancer also tended to increase risk in short working hours, however, there were not statistically significance. CONCLUSIONS In this population, long working hours were not associated with cancer risk with statistically significance. The association between short working hours and liver cancer risk was observed, probably due to the reverse causation of liver cancer.
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Affiliation(s)
- Kana Hattori
- Department of Social and Environmental MedicineGraduate School of Medicine, Osaka University, SuitaOsakaJapan
| | - Tomotaka Sobue
- Department of Social and Environmental MedicineGraduate School of Medicine, Osaka University, SuitaOsakaJapan
| | - Ling Zha
- Department of Social and Environmental MedicineGraduate School of Medicine, Osaka University, SuitaOsakaJapan
| | - Tetsuhisa Kitamura
- Department of Social and Environmental MedicineGraduate School of Medicine, Osaka University, SuitaOsakaJapan
| | - Yoshimitsu Shimomura
- Department of Social and Environmental MedicineGraduate School of Medicine, Osaka University, SuitaOsakaJapan
| | - Motoki Iwasaki
- Division of EpidemiologyNational Cancer Center Institute for Cancer Control, National Cancer CenterChuo‐kuJapan
| | - Manami Inoue
- Division of PreventionNational Cancer Center Institute for Cancer Control, National Cancer CenterChuo‐kuJapan
| | - Taiki Yamaji
- Division of EpidemiologyNational Cancer Center Institute for Cancer Control, National Cancer CenterChuo‐kuJapan
| | - Shoichiro Tsugane
- Division of Cohort ResearchNational Cancer Center Institute for Cancer Control, National Cancer CenterChuo‐kuJapan
| | - Norie Sawada
- Division of Cohort ResearchNational Cancer Center Institute for Cancer Control, National Cancer CenterChuo‐kuJapan
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14
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Scher N, Guetta L, Draghi C, Yahiaoui S, Terzioglu M, Butaye E, Henriques K, Alavoine M, Elharar A, Guetta A, Toledano A. Sleep Disorders and Quality of Life in Patients With Cancer: Prospective Observational Study of the Rafael Institute. JMIR Form Res 2022; 6:e37371. [PMID: 36422866 PMCID: PMC9732755 DOI: 10.2196/37371] [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: 02/17/2022] [Revised: 08/22/2022] [Accepted: 09/29/2022] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Sleep disorders are a common occurrence in the general population. Yet today, it is clearly agreed that sleep disorders represent both a cancer risk factor and a biological consequence of the of the activation of the immuno-inflammatory system induced by cancer itself. OBJECTIVE The aim of this study was to assess the impact of sleep disorders on quality of life and identify the type of disorder and its causes in order to offer an adapted and personalized care plan. METHODS In a survey completed during the COVID-19 lockdown, 2000 hours of interviews were collected by remote consultations. During these calls, we administered a sleep questionnaire. This questionnaire was inspired by the STOP-BANG questionnaire and enquired about 6 items. The demographic details of each patient (eg, age and sex), the nature of the pathology, their past treatments, the ongoing cancer treatment, the mood, whether or not the patient is anxious or depressed, and the use of sleeping drug pills were analyzed. A univariate analysis was performed according to the presence or absence of fatigue. Chi-square test was applied to assess possible differences of variables' link to sleep disturbance between patients complaining of fatigue and those without fatigue. The same test was then used to analyze patients on hormone therapy and those with no hormone therapy for 2 types of cancer-breast cancer and prostate cancer. RESULTS A total of 905 patients were prospectively included in this study. The average age was 66.7 (5 SD) years, and 606 (67%) patients were women; 142 patients declared being overweight. Breast cancer was the most frequently reported cancer. Nocturnal awakening was reported by 70% (n=633), fatigue by 50% (n=452), difficulty falling asleep by 38% (n=343), snoring reported by an independent observer in 38% (n=343), and apnea reported by an independent observer in 9% (n=81) of the patients. The univariate analysis showed that the feeling of tiredness was significantly greater in patients reporting difficulty falling asleep (P≥.99), pain (P<.001), and frequent awakening (P<.001), as well as in patients who were not receiving cancer treatment (P<.001). The univariate analysis showed that patients who were receiving breast cancer treatment and were under hormone therapy reported difficulty falling asleep (P=.04) and pain (P=.05). In a univariate analysis of patients treated for prostate cancer, being overweight was the only factor reported that had a statistically significant value. CONCLUSIONS Our preliminary data support and are consistent with data in the literature regarding the importance of sleep disorders in oncology. This justifies the usefulness of a diagnosis and early treatment of sleep disorders in patients with cancer. The Rafael Institute sleep observatory will enable patients to be identified and treated.
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Affiliation(s)
- Nathaniel Scher
- Integrative Medicine, Rafael Institute, Levallois-Perret, France
- Hartmann Oncology Radiotherapy Group, Hartmann Radiotherapy Institute, Levallois Perret, France
| | - Liath Guetta
- Integrative Medicine, Rafael Institute, Levallois-Perret, France
| | - Clément Draghi
- Integrative Medicine, Rafael Institute, Levallois-Perret, France
| | - Safia Yahiaoui
- Integrative Medicine, Rafael Institute, Levallois-Perret, France
- Department of Radiotherapy, Institut Salah Azaiz, Tunis, Tunisia
| | | | - Emilie Butaye
- Integrative Medicine, Rafael Institute, Levallois-Perret, France
| | - Kathy Henriques
- Integrative Medicine, Rafael Institute, Levallois-Perret, France
| | - Marie Alavoine
- Integrative Medicine, Rafael Institute, Levallois-Perret, France
| | - Ayala Elharar
- Integrative Medicine, Rafael Institute, Levallois-Perret, France
| | - Andre Guetta
- Integrative Medicine, Rafael Institute, Levallois-Perret, France
| | - Alain Toledano
- Integrative Medicine, Rafael Institute, Levallois-Perret, France
- Department of Integrative Medicine, National Conservatory of Arts and Crafts, Paris, France
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15
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Dasari SS, Archer M, Mohamed NE, Tewari AK, Figueiro MG, Kyprianou N. Circadian Rhythm Disruption as a Contributor to Racial Disparities in Prostate Cancer. Cancers (Basel) 2022; 14:cancers14205116. [PMID: 36291899 PMCID: PMC9600368 DOI: 10.3390/cancers14205116] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 10/08/2022] [Accepted: 10/15/2022] [Indexed: 01/27/2023] Open
Abstract
In the United States, African American (AA) men have a 2.4 times higher mortality rate due to prostate cancer than White men. The multifactorial causes of the racial disparities in prostate cancer involve various social determinants of health, socioeconomic status, and access to healthcare. However, emerging evidence also suggests that circadian rhythm disruption (CRD) contributes to prostate cancer, and AA men may be more susceptible to developing CRDs. Circadian rhythms play a significant role in metabolism, hormone secretion, and sleep/wake cycles. Disruption in these circadian rhythms can be caused by airplane travel/jetlag, night shift work, exposure to light, and neighborhood noise levels, which can contribute to sleep disorders and chronic conditions such as obesity, diabetes, cardiovascular disease, and depression. The drivers of the racial disparities in CRD include night shift work, racial discrimination, elevated stress, and residing in poor neighborhoods characterized by high noise pollution. Given the increased vulnerability of AA men to CRDs, and the role that CRDs play in prostate cancer, elucidating the clock-related prostate cancer pathways and their behavior and environmental covariates may be critical to better understanding and reducing the racial disparities in prostate cancer.
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Affiliation(s)
- Sonali S. Dasari
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Maddison Archer
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Nihal E. Mohamed
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Tisch Cancer Institute, Mount Sinai Health, New York, NY 10029, USA
| | - Ashutosh K. Tewari
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Tisch Cancer Institute, Mount Sinai Health, New York, NY 10029, USA
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Mariana G. Figueiro
- Tisch Cancer Institute, Mount Sinai Health, New York, NY 10029, USA
- Light and Health Research Center, Department of Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Correspondence: (M.G.F.); (N.K.)
| | - Natasha Kyprianou
- Department of Urology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Tisch Cancer Institute, Mount Sinai Health, New York, NY 10029, USA
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Correspondence: (M.G.F.); (N.K.)
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16
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Sunde E, Harris A, Nielsen MB, Bjorvatn B, Lie SA, Holmelid Ø, Vedaa Ø, Waage S, Pallesen S. Protocol for a systematic review and meta-analysis on the associations between shift work and sickness absence. Syst Rev 2022; 11:143. [PMID: 35842678 PMCID: PMC9287923 DOI: 10.1186/s13643-022-02020-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 07/06/2022] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Shift work, i.e., non-standard work hours, has been associated with both short- and long-term sickness absence. However, findings are inconsistent and inconclusive. Thus far, no comprehensive meta-analytic synthesis on the relationship between shift work and sickness absence has been published. The aims of the planned systematic review and meta-analysis are (1) to establish whether shift work is associated with sickness absence, (2) to determine if specific shift work characteristics relate to sickness absence (e.g., length and frequency of spells), and (3) to identify moderating factors affecting the relationship between shift work and sickness absence. METHODS Eligible studies will be identified using a predefined search strategy in several electronic databases (MEDLINE, Web of Science, PsychInfo, EMBASE, and ProQuest) and comprise peer-reviewed papers reporting original empirical findings on the association between shift work and sickness absence. Mainly observational studies with cross-sectional, prospective, or retrospective research design and case-control studies will be included. Risk of bias will be assessed using an adapted checklist previously employed to evaluate studies on sickness absence. To carry out the meta-analytic synthesis, a random effects meta-analysis will be conducted using the Comprehensive Meta-Analysis software. The review and meta-analysis will be reported according to the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines. Heterogeneity will be evaluated by Cochran's Q test and the I2 statistics. DISCUSSION The review and meta-analysis will be the first to conduct a meta-analytic synthesis of the evidence on the association between exposure to shift work and sickness absence, as well as identify relevant moderators affecting the relationship between shift work and sickness absence. Aggregation of the existing evidence will improve the knowledge on the association between shift work and sickness absence. Such knowledge can be used to guide scheduling of shift work to promote work schedules that are less detrimental to health and contribute to reduced sickness absence and higher work- and leisure-time productivity. SYSTEMATIC REVIEW REGISTRATION PROSPERO CRD42022301200.
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Affiliation(s)
- Erlend Sunde
- Department of Psychosocial Science, University of Bergen, Christies gt. 12, 5015, Bergen, Norway.
| | - Anette Harris
- Department of Psychosocial Science, University of Bergen, Christies gt. 12, 5015, Bergen, Norway
| | - Morten Birkeland Nielsen
- Department of Psychosocial Science, University of Bergen, Christies gt. 12, 5015, Bergen, Norway.,Department of Work Psychology and Physiology, National Institute of Occupational Health, Oslo, Norway
| | - Bjørn Bjorvatn
- Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway.,Norwegian Competence Center for Sleep Disorders, Haukeland University Hospital, Bergen, Norway
| | - Stein Atle Lie
- Department of Clinical Dentistry, University of Bergen, Bergen, Norway.,Norwegian National Advisory Unit on Arthroplasty and Hip Fractures, Haukeland University Hospital, Bergen, Norway
| | - Øystein Holmelid
- Department of Psychosocial Science, University of Bergen, Christies gt. 12, 5015, Bergen, Norway
| | - Øystein Vedaa
- Department of Psychosocial Science, University of Bergen, Christies gt. 12, 5015, Bergen, Norway.,Department of Health Promotion, Norwegian Institute of Public Health, Bergen, Norway
| | - Siri Waage
- Department of Psychosocial Science, University of Bergen, Christies gt. 12, 5015, Bergen, Norway.,Norwegian Competence Center for Sleep Disorders, Haukeland University Hospital, Bergen, Norway
| | - Ståle Pallesen
- Department of Psychosocial Science, University of Bergen, Christies gt. 12, 5015, Bergen, Norway.,Norwegian Competence Center for Sleep Disorders, Haukeland University Hospital, Bergen, Norway.,Optentia, The Vaal Triangle Campus of the North-West University, Vanderbijlpark, South Africa
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17
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Hong J, He Y, Fu R, Si Y, Xu B, Xu J, Li X, Mao F. The relationship between night shift work and breast cancer incidence: A systematic review and meta-analysis of observational studies. Open Med (Wars) 2022; 17:712-731. [PMID: 35702390 PMCID: PMC8995855 DOI: 10.1515/med-2022-0470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 03/01/2022] [Accepted: 03/14/2022] [Indexed: 11/18/2022] Open
Abstract
The purpose of this study was to investigate the relationship between night shift work and breast cancer (BC) incidence. A search was performed in PubMed, EBSCO, Web of Science, and Cochrane Library databases before June 2021. The exposure factor of this study is night shift work, the primary outcome is the risk of BC. A total of 33 observational studies composed of 4,331,782 participants were included. Night shift work increases the risk of BC in the female population (hazard ratio [HR] = 1.20, 95% confidence interval [Cl] = 1.10–1.31, p < 0.001), especially receptor-positive BC, including estrogen receptor (ER)+ BC (HR = 1.35, p < 0.001), progesterone receptor (PR)+ BC (HR = 1.30, p = 0.003), and human epidermal growth factor receptor 2 (HER2)+ BC (HR = 1.42, p < 0.001), but has no effect on HER2− BC (HR = 1.10, p = 0.515) and ER−/PR− BC (HR = 0.98, p = 0.827). The risk of BC was positively correlated with night shift working duration, frequency, and cumulative times. For women who start night work before menopause, night work will increase the incidence of BC (HR = 1.17, p = 0.020), but for women who start night work after menopause, night work does not affect BC (HR = 1.04, p = 0.293). Night work can increase the incidence of BC in the female population. The effect of long working hours, frequency, and the cumulative number of night shifts on BC is influenced by menopausal status.
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Affiliation(s)
- Jiaze Hong
- The Second Clinical Medical College, Zhejiang Chinese Medical University , Hangzhou , Zhejiang , China
| | - Yujing He
- The Second Clinical Medical College, Zhejiang Chinese Medical University , Hangzhou , Zhejiang , China
| | - Rongrong Fu
- The First Clinical Medical College, Zhejiang Chinese Medical University , Hangzhou , Zhejiang , China
| | - Yuexiu Si
- School of Basic Medical Sciences, Zhejiang Chinese Medical University , Hangzhou , Zhejiang , China
| | - Binbin Xu
- Department of Nutrition, HwaMei Hospital, University of Chinese Academy of Sciences , Ningbo , Zhejiang , China
| | - Jiaxuan Xu
- The Second Clinical Medical College, Zhejiang Chinese Medical University , Hangzhou , Zhejiang , China
| | - Xiangyuan Li
- The Second Clinical Medical College, Zhejiang Chinese Medical University , Hangzhou , Zhejiang , China
| | - Feiyan Mao
- Department of General Surgery, HwaMei Hospital, University of Chinese Academy of Sciences , Northwest Street 41, Haishu District, Ningbo, 315010 , Zhejiang , China
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18
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Long-Term Nightshift Work and Breast Cancer Risk: An Updated Systematic Review and Meta-Analysis with Special Attention to Menopausal Status and to Recent Nightshift Work. Cancers (Basel) 2021; 13:cancers13235952. [PMID: 34885062 PMCID: PMC8657038 DOI: 10.3390/cancers13235952] [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: 10/06/2021] [Revised: 11/13/2021] [Accepted: 11/22/2021] [Indexed: 11/17/2022] Open
Abstract
This systematic review discusses long-term NSW and female BC risk, with special attention to differences between pre- and postmenopausal BC, to test the association with recent NSW. The review follows PRISMA guidelines (Prospero registry: CRD42018102515). We searched PubMed, Embase, and WOS for case-control, nested case-control, and cohort studies addressing long-term NSW (≥15 years) as risk exposure and female BC as outcome until 31 December 2020. Risk of bias was evaluated with the Newcastle-Ottawa scale. Eighteen studies were finally included (eight cohorts; five nested case-control; five case-control). We performed meta-analyses on long-term NSW and BC risk; overall and by menopausal status; a subanalysis on recent long-term NSW, based on studies involving predominantly women below retirement age; and a dose-response meta-analysis on NSW duration. The pooled estimate for long-term NSW and BC was 1.13 (95%CI = 1.01-1.27; 18 studies, I2 = 56.8%, p = 0.002). BC risk increased 4.7% per 10 years of NSW (95%CI = 0.94-1.09; 16 studies, I2 = 33.4%, p = 0.008). The pooled estimate for premenopausal BC was 1.27 (95%CI = 0.96-1.68; six studies, I2 = 32.0%, p = 0.196) and for postmenopausal BC 1.05 (95%CI = 0.90-1.24,I2 = 52.4%; seven studies, p = 0.050). For recent long-term exposure, the pooled estimate was 1.23 (95%CI = 1.06-1.42; 15 studies; I2 = 48.4%, p = 0.018). Our results indicate that long-term NSW increases the risk for BC and that menopausal status and time since exposure might be relevant.
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19
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Wang X, Li Y, Fu J, Zhou K, Wang T. ARNTL2 is a Prognostic Biomarker and Correlates with Immune Cell Infiltration in Triple-Negative Breast Cancer. PHARMACOGENOMICS & PERSONALIZED MEDICINE 2021; 14:1425-1440. [PMID: 34785930 PMCID: PMC8591114 DOI: 10.2147/pgpm.s331431] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 10/04/2021] [Indexed: 11/23/2022]
Abstract
Background Triple-negative breast cancer (TNBC) is the most aggressive breast cancer subtype and is associated with poor prognosis. The aberrant expression of circadian genes contributes to the origin and progression of breast cancer. The present study was designed to explore the potential function and prognosis value of circadian genes in TNBC. Methods The transcriptome data of circadian genes were downloaded from The Cancer Genomic Atlas (TCGA), GSE25066 and GSE31448 datasets. The differential expressed circadian genes between non-TNBC and TNBC patients were analysed by Wilcoxon test. Univariate and multivariate Cox regression analyses were employed to identify the prognostic circadian genes. Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG) and Gene Set Enrichment Analysis (GSEA) were performed to study the biological functions of ARNTL2. The composition of 22 immune cells in the tumour samples was estimated with CIBERSORT algorithm. The correlations between ARNTL2 expression and tumour-infiltrating immune cells were evaluated by Spearman correlation coefficient. Results A total of 8 circadian genes were found to be differentially expressed between non-TNBC and TNBC, but only ARNTL2 has prognostic value. Multivariate Cox analysis identified that ARNTL2 was an independent prognosis factor for overall survival and relapse-free survival in TNBC patients. Functionally, ARNTL2 was mainly involved in immune response processes such as positive regulation of cytokine production, regulation of innate immune response, and cellular responses to molecules of bacterial origin. High expression of ARNTL2 was positively correlated with activated CD4 memory T cells, activated mast cells, and neutrophil infiltration and the expression of markers of neutrophils (ITGAM), dendritic cells (HLA-DRA, HLA-DPA1, ITGAM), Th1 (IL1B, STAT1), Th2 (IL13), Th17 (STAT3) and mast cells (TPSB2, TPSAB1). Conclusion ARNTL2 may be linked with the functional modulation of the tumour immune microenvironment and serve as a potential biomarker for predicting the prognosis of TNBC patients.
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Affiliation(s)
- Xiaoyu Wang
- Department of Physiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - Yan Li
- Department of Pathology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - Jianchang Fu
- Department of Pathology, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People's Republic of China
| | - Kewen Zhou
- Department of Physiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
| | - Tinghuai Wang
- Department of Physiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China
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20
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Wei F, Chen W, Lin X. Night-shift work, breast cancer incidence, and all-cause mortality: an updated meta-analysis of prospective cohort studies. Sleep Breath 2021; 26:1509-1526. [PMID: 34775538 DOI: 10.1007/s11325-021-02523-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 10/23/2021] [Accepted: 11/02/2021] [Indexed: 11/30/2022]
Abstract
OBJECTIVES Night-shift work exposure is proposed to link to a wide range of health issues, especially cancer incidence, cancer-specific death, and all-cause death. However, the epidemiological associations among night-shift work exposure, breast cancer, breast cancer-specific death, and all-cause mortality remain inconclusive. METHODS We performed an updated systematic review and meta-analysis to confirm potential associations among night-shift work exposure, breast cancer, and all-cause mortality. RESULTS A total of 31 prospective cohort studies, involving 9.3 million participants, 31,244 incident breast cancer cases, 12,728 cancer-related deaths, 7882 cardiovascular deaths, and 30,807 all-cause mortalities were included. Overall, the summary RR of incident breast cancer in females for an increase of night-shift work was 1.029 (95% CI 1.003-1.055). Compared with standard day workers, night-shift workers had a statistically significantly increased RR (1.086, 95% CI 1.032-1.142) for breast cancer incidence in the subgroup of > 10 years exposure. Furthermore, a positive association was revealed in subgroup studies of rotating night-shift work (RR = 1.053, 95% CI 1.018-1.090). A significant increased risk of cardiovascular mortality was demonstrated in the night-shift work group (RR = 1.031; 95% CI 1.006-1.057). CONCLUSION Our systematic review and meta-analysis provided convincing evidence supporting positive associations among night-shift work exposure, breast cancer incidence, and cardiovascular mortality. Taken together, night-shift work exposure significantly increased the risk of breast cancer morbidity by 2.9% for total, 8.6% for the subgroup of more than 10 years night-shift work, and 5.3% for rotating night-shift work. In addition, night-shift work increased the risk of cardiovascular mortality by 3.1%.
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Affiliation(s)
- Fengqin Wei
- Department of Geriatrics, Fujian Provincial 2Nd People's Hospital, Affiliated Hospital of Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Weiyu Chen
- Department of Physiology, Zhongshan Medical School, Sun Yat-Sen University, Guangzhou, China
| | - Xiaoti Lin
- Department of Breast Surgery, Fujian Provincial Maternity and Children's Hospital of Fujian Medical University, Fuzhou, China.
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21
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Vouxinou A, Iatrakis G, Zervoudis S, Dagla M, Orovou E, Palaska E, Sarella A, Antoniou E. The Impact of the Characteristics of Exercise on The Risk of Breast Cancer Instructions. Mater Sociomed 2021; 33:195-198. [PMID: 34759777 PMCID: PMC8565428 DOI: 10.5455/msm.2021.33.195-198] [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: 07/15/2021] [Accepted: 09/16/2021] [Indexed: 11/17/2022] Open
Abstract
Background: Exercise seems to protect from breast cancer (BC) and this protection is likely mediated through weight control during menopause. Considering that night work is associated with higher risk for BC. Objective: The aim of this study was to examine the possible relation of BC risk to daytime or nighttime hours of exercise. Methods: The material was taken from primary elements of a doctoral thesis at the Department of Midwifery, University of West Attica that examines the impact of the characteristics of exercising on BC. The data were obtained from relevant questionnaires filled in at a big private hospital, following a relevant permit of the scientific committee, and adjusted Google Forms, ensuring anonymity. Results: Almost 3 times more women without a history of BC were exclusively exercising during the daytime compared to the ones with a history of BC who were exclusively exercising during the nighttime (40 vs 15). On the contrary, a smaller number of women without a history of BC were exclusively exercising during the nighttime compared to the ones with a history of BC who were exclusively exercising during the nighttime (17 vs 20) (odds ratio >3 with a confidence interval >1 to >7.5 and p<0.05). Conclusion: It seems that the protective impact of exercising on BC is mitigated when the exercise is performed exclusively during night hours.
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Affiliation(s)
| | | | - Stefanos Zervoudis
- Department of Midwifery, University of West Attica, Athens, Greece.,Department of Midwifery, University of West Attica, Athens, Greece
| | - Maria Dagla
- Department of Midwifery, University of West Attica, Athens, Greece
| | - Eirini Orovou
- Department of Midwifery, University of West Attica, Athens, Greece
| | - Ermioni Palaska
- Department of Midwifery, University of West Attica, Athens, Greece
| | - Angeliki Sarella
- Department of Midwifery, University of West Attica, Athens, Greece
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22
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Van NTH, Hoang T, Myung SK. Night shift work and breast cancer risk: a meta-analysis of observational epidemiological studies. Carcinogenesis 2021; 42:1260-1269. [PMID: 34409980 DOI: 10.1093/carcin/bgab074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 07/28/2021] [Accepted: 08/17/2021] [Indexed: 12/09/2022] Open
Abstract
Previous observational epidemiological studies have reported inconsistently the association between night shift work (NSW) and the risk of breast cancer (BC). This study aimed to investigate those associations by using a meta-analysis of observational epidemiological studies. We searched PubMed and EMBASE using keywords related to this topic from inception till November 2020. The pooled effect sizes such as odds ratio (OR), hazard ratio (HR) or relative risk (RR) with 95% confidence interval (CI) were calculated using a random-effects model. In the meta-analysis of a total of 32 observational studies including 13 case-control studies, 4 nested case-control studies and 15 cohort studies, NSW significantly increased the risk of BC (OR/RR/HR, 1.11; 95% CI, 1.04-1.20; I2 = 72.4%). In the subgroup meta-analysis by type of study, NSW was also associated with the increased risk of BC in case-control studies (OR, 1.34; 95% CI, 1.17-1.53; I2 = 63.8%). However, no significant association was found in both nested case-control studies (OR, 1.14; 95% CI, 0.89-1.46; I2 = 65.8%) and cohort studies (RR/HR, 0.98; 95% CI, 0.93-1.03; I2 = 25.3%). Besides, there was no significant association between NSW for over 20 years and the risk of BC (OR/RR/HR, 1.03; 95% CI, 0.95-1.11; I2 = 36.6%, n = 14). Given that cohort studies provide higher evidence than case-control studies, there is no association between NSW and the risk of BC.
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Affiliation(s)
- Nhung Thi Hong Van
- Department of Cancer Biomedical Science, National Cancer Center Graduate School of Cancer Science and Policy, 323 Ilsan-ro, Ilsandong-gu, Goyang, Gyeonggi-do 10408, Republic of Korea
| | - Tung Hoang
- Department of Cancer Biomedical Science, National Cancer Center Graduate School of Cancer Science and Policy, 323 Ilsan-ro, Ilsandong-gu, Goyang, Gyeonggi-do 10408, Republic of Korea
| | - Seung-Kwon Myung
- Department of Cancer Biomedical Science, National Cancer Center Graduate School of Cancer Science and Policy, 323 Ilsan-ro, Ilsandong-gu, Goyang, Gyeonggi-do 10408, Republic of Korea.,Division of Cancer Epidemiology and Management, Research Institute, National Cancer Center, 323 Ilsan-ro, Ilsandong-gu, Goyang, Gyeonggi-do 10408, Republic of Korea.,Department of Family Medicine and Center for Cancer Prevention and Detection, Hospital, National Cancer Center, 323 Ilsan-ro, Ilsandong-gu, Goyang, Gyeonggi-do 10408, Republic of Korea
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23
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Mannino G, Pernici C, Serio G, Gentile C, Bertea CM. Melatonin and Phytomelatonin: Chemistry, Biosynthesis, Metabolism, Distribution and Bioactivity in Plants and Animals-An Overview. Int J Mol Sci 2021; 22:ijms22189996. [PMID: 34576159 PMCID: PMC8469784 DOI: 10.3390/ijms22189996] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 09/14/2021] [Accepted: 09/15/2021] [Indexed: 12/21/2022] Open
Abstract
Melatonin is a ubiquitous indolamine, largely investigated for its key role in the regulation of several physiological processes in both animals and plants. In the last century, it was reported that this molecule may be produced in high concentrations by several species belonging to the plant kingdom and stored in specialized tissues. In this review, the main information related to the chemistry of melatonin and its metabolism has been summarized. Furthermore, the biosynthetic pathway characteristics of animal and plant cells have been compared, and the main differences between the two systems highlighted. Additionally, in order to investigate the distribution of this indolamine in the plant kingdom, distribution cluster analysis was performed using a database composed by 47 previously published articles reporting the content of melatonin in different plant families, species and tissues. Finally, the potential pharmacological and biostimulant benefits derived from the administration of exogenous melatonin on animals or plants via the intake of dietary supplements or the application of biostimulant formulation have been largely discussed.
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Affiliation(s)
- Giuseppe Mannino
- Department of Life Sciences and Systems Biology, Plant Physiology Unit, University of Turin, Via Quarello 15/A, 10135 Turin, Italy; (G.M.); (C.P.)
| | - Carlo Pernici
- Department of Life Sciences and Systems Biology, Plant Physiology Unit, University of Turin, Via Quarello 15/A, 10135 Turin, Italy; (G.M.); (C.P.)
| | - Graziella Serio
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Viale delle Scienze, 90128 Palermo, Italy;
| | - Carla Gentile
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Viale delle Scienze, 90128 Palermo, Italy;
- Correspondence: (C.G.); (C.M.B.); Tel.: +39-091-2389-7423 (C.G.); +39-011-670-6361 (C.M.B.)
| | - Cinzia M. Bertea
- Department of Life Sciences and Systems Biology, Plant Physiology Unit, University of Turin, Via Quarello 15/A, 10135 Turin, Italy; (G.M.); (C.P.)
- Correspondence: (C.G.); (C.M.B.); Tel.: +39-091-2389-7423 (C.G.); +39-011-670-6361 (C.M.B.)
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24
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Xing X, Gu F, Hua L, Cui X, Li D, Wu Z, Zhang R. TIMELESS Promotes Tumor Progression by Enhancing Macrophages Recruitment in Ovarian Cancer. Front Oncol 2021; 11:732058. [PMID: 34490127 PMCID: PMC8417241 DOI: 10.3389/fonc.2021.732058] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 07/29/2021] [Indexed: 01/11/2023] Open
Abstract
Objective Ovarian cancer (OV) is the most fatal and frequent type of gynecological malignancy worldwide. TIMELESS (TIM), as a circadian clock gene, has been found to be highly expressed and predictive of poor prognosis in various cancers. However, the function of TIM in OV is not known. This study was designed to investigate the biological functions and underlying mechanisms of TIM during OV progression. Methods Cell viability assay, cell migration assay, immunohistochemistry staining, qPCR analyses, and tumor xenograft model were used to identify the functions of TIM in OV. Bioinformatics analyses, including GEPIA, cBioPortal, GeneMANIA, and TIMER, were used to analyze the gene expression, genetic alteration, and immune cell infiltration of TIM in OV. Results TIM is highly expressed in OV patients. TIM knockdown inhibited OV cell proliferation, migration, and invasion both in vitro and in vivo. Genetic alteration of TIM was identified in patients with OV. TIM co-expression network indicates that TIM had a wide effect on the immune cell infiltration and activation in OV. Further analysis and experimental verification revealed that TIM was positively correlated with macrophages infiltration in OV. Conclusions Our study unveiled a novel function of highly expressed TIM associated with immune cell especially macrophages infiltration in OV. TIM may serve as a potential prognostic biomarker and immunotherapy target for OV patients.
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Affiliation(s)
- Xin Xing
- Department of Obstetrics and Gynecology, Fengxian Hospital Affiliated to the Southern Medical University, Shanghai, China
| | - Fei Gu
- Department of Obstetrics and Gynecology, Fengxian Hospital Affiliated to the Southern Medical University, Shanghai, China
| | - Lanyu Hua
- The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Xiaoxiao Cui
- Department of Obstetrics and Gynecology, Fengxian Hospital Affiliated to the Southern Medical University, Shanghai, China
| | - Dongxue Li
- Shanghai Cancer Institute, Shanghai, China
| | - Zhiyong Wu
- Gynecology Department, Shanghai Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
| | - Rong Zhang
- Department of Obstetrics and Gynecology, Fengxian Hospital Affiliated to the Southern Medical University, Shanghai, China.,The Third School of Clinical Medicine, Southern Medical University, Guangzhou, China
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25
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Tao F, Cao Z, Jiang Y, Fan N, Xu F, Yang H, Li S, Zhang Y, Zhang X, Sun L, Wang Y. Associations of sleep duration and quality with incident cardiovascular disease, cancer, and mortality: a prospective cohort study of 407,500 UK biobank participants. Sleep Med 2021; 81:401-409. [PMID: 33819843 DOI: 10.1016/j.sleep.2021.03.015] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 03/03/2021] [Accepted: 03/09/2021] [Indexed: 11/28/2022]
Abstract
OBJECTIVE Few studies have investigated the associations of sleep duration and sleep quality with incident cardiovascular diseases (CVDs), cancer, and mortality in the same large population. This study aimed at estimating the independent risk factors of long or short sleep durations and several typical characteristics of poor sleep quality for incident CVDs, cancer, and mortality. METHODS In this prospective cohort study, 407 500 individuals were enrolled. Cox proportional hazards models were used to calculate the adjusted hazard ratios and 95% confidence intervals (HR, 95%CI) of associations of sleep duration and quality with incident CVDs, cancer, and mortality. RESULTS Compared with the sleep duration of 7 h, sleep duration of ≤5 h and ≥9 h were both associated with higher risk of all-cause mortality (HR = 1.25, 95% CI: 1.16-1.34 and HR = 1.30, 95% CI: 1.22-1.38, respectively), CVD mortality (HR = 1.27, 95% CI: 1.09-1.49 and HR = 1.32, 95% CI: 1.16-1.50, respectively), and CVD incidence (HR = 1.23, 95% CI: 1.16-1.31 and HR = 1.08, 95% CI: 1.02-1.15, respectively). Additionally, long sleep duration (≥9 h) was associated with a higher risk of cancer mortality (HR = 1.19, 95% CI: 1.10-1.30) and cancer incidence (HR = 1.08, 95% CI: 1.04-1.12). Moreover, CVD incidence was significantly associated with snoring, insomnia and narcolepsy, increasing the risk by 7%, 26%, and 20%, respectively. CONCLUSION Long sleep durations may substantially increase the risk of mortality and morbidity. Snoring, insomnia, and narcolepsy were independent risk factors for incident CVD.
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Affiliation(s)
- Fengran Tao
- School of Public Health, Tianjin Medical University, Tianjin, China
| | - Zhi Cao
- School of Public Health, Tianjin Medical University, Tianjin, China
| | - Yunwen Jiang
- School of Public Health, Tianjin Medical University, Tianjin, China
| | - Na Fan
- School of Public Health, Tianjin Medical University, Tianjin, China
| | - Fusheng Xu
- School of Public Health, Tianjin Medical University, Tianjin, China
| | - Hongxi Yang
- School of Public Health, Tianjin Medical University, Tianjin, China
| | - Shu Li
- School of Public Health, Tianjin Medical University, Tianjin, China
| | - Yuan Zhang
- School of Public Health, Tianjin Medical University, Tianjin, China
| | - Xinyu Zhang
- School of Public Health, Tianjin Medical University, Tianjin, China
| | - Li Sun
- School of Nursing, Tianjin Medical University, Tianjin, China
| | - Yaogang Wang
- School of Public Health, Tianjin Medical University, Tianjin, China.
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26
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Manouchehri E, Taghipour A, Ghavami V, Ebadi A, Homaei F, Latifnejad Roudsari R. Night-shift work duration and breast cancer risk: an updated systematic review and meta-analysis. BMC Womens Health 2021; 21:89. [PMID: 33653334 PMCID: PMC7927396 DOI: 10.1186/s12905-021-01233-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 02/22/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND The International Agency for Research on Cancer (IARC) has classified shift work as a possible human carcinogen. The results of systematic on this topic is contradictory. This systematic review and meta-analysis, therefore, aimed to update the current evidence regarding the relationship between night-shift work duration and breast cancer risk. METHODS PubMed, Web of Science, and Scopus as well as reference list of included studies were searched until December 19, 2020. Observational case-control or cohort studies investigating the relationship between the duration of night-shift work and breast cancer in women were included, which all quantified night-shift work exposure. All statistical analyses were done by Stata version 11.2. RESULTS Our literature search was resulted in retrieval of 4854 publications from which 26 eligible studies with 1,313,348 participants were included in the meta-analyses. The pooled relative risk (RR) and 95% confidence intervals (CIs) of breast cancer for short-term night-shift workers (< 10 years) was 1.13 (95% CI 1.03-1.24, p = 0.008, I2 = 71.3%), and for long-term night-shift workers (≥ 10 years) was 1.08 (95% CI 0.99-1.17, p = 0.09, I2 = 42.2%), with moderate to substantial statistical heterogeneity observed in both analyses. The results of subgroup analysis showed that flight attendants with long overnight flights were at an elevated risk of breast cancer, but unmeasured confounders limited these results. The risk of breast cancer in case control studies, adjusted for reproductive factors and family history of breast cancer as well as studies with high quality was increased in both short term and long term night-shift workers. CONCLUSIONS This systematic review found a positive statistical relationship between night work and breast cancer risk in short-term night-shift workers but no increase was observed in the long-term night-shift workers.
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Affiliation(s)
- E. Manouchehri
- Department of Midwifery, School of Nursing and Midwifery, Mashhad University of Medical Sciences, Mashhad, Islamic Republic of Iran
| | - A. Taghipour
- Department of Epidemiology, School of Health, Mashhad University of Medical Sciences, Mashhad, Islamic Republic of Iran
| | - V. Ghavami
- Department of Biostatistics, School of Health, Mashhad University of Medical Sciences, Mashhad, Islamic Republic of Iran
| | - A. Ebadi
- Behavioral Sciences Research Center, Lifestyle Institute, Baqiyatallah University of Medical Sciences, Tehran, Islamic Republic of Iran
- Nursing Faculty, Baqiyatallah University of Medical Sciences, Tehran, Islamic Republic of Iran
| | - F. Homaei
- Cancer Research Center, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Islamic Republic of Iran
| | - R. Latifnejad Roudsari
- Department of Midwifery, School of Nursing and Midwifery, Mashhad University of Medical Sciences, Mashhad, Islamic Republic of Iran
- Nursing and Midwifery Care Research Center, Mashhad University of Medical Sciences, Mashhad, Islamic Republic of Iran
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27
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Bottalico LN, Weljie AM. Cross-species physiological interactions of endocrine disrupting chemicals with the circadian clock. Gen Comp Endocrinol 2021; 301:113650. [PMID: 33166531 PMCID: PMC7993548 DOI: 10.1016/j.ygcen.2020.113650] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 10/09/2020] [Accepted: 10/17/2020] [Indexed: 02/06/2023]
Abstract
Endocrine disrupting chemicals (EDCs) are endocrine-active chemical pollutants that disrupt reproductive, neuroendocrine, cardiovascular and metabolic health across species. The circadian clock is a transcriptional oscillator responsible for entraining 24-hour rhythms of physiology, behavior and metabolism. Extensive bidirectional cross talk exists between circadian and endocrine systems and circadian rhythmicity is present at all levels of endocrine control, from synthesis and release of hormones, to sensitivity of target tissues to hormone action. In mammals, a range of hormones directly alter clock gene expression and circadian physiology via nuclear receptor (NR) binding and subsequent genomic action, modulating physiological processes such as nutrient and energy metabolism, stress response, reproductive physiology and circadian behavioral rhythms. The potential for EDCs to perturb circadian clocks or circadian-driven physiology is not well characterized. For this reason, we explore evidence for parallel endocrine and circadian disruption following EDC exposure across species. In the reviewed studies, EDCs dysregulated core clock and circadian rhythm network gene expression in brain and peripheral organs, and altered circadian reproductive, behavioral and metabolic rhythms. Circadian impacts occurred in parallel to endocrine and metabolic alterations such as impaired fertility and dysregulated metabolic and energetic homeostasis. Further research is warranted to understand the nature of interaction between circadian and endocrine systems in mediating physiological effects of EDC exposure at environmental levels.
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Affiliation(s)
- Lisa N Bottalico
- Department of Systems Pharmacology and Translational Therapeutics, Institute for Translational Medicine and Therapeutics, Center of Excellence in Environmental Toxicology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
| | - Aalim M Weljie
- Department of Systems Pharmacology and Translational Therapeutics, Institute for Translational Medicine and Therapeutics, Center of Excellence in Environmental Toxicology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
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28
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Amiri S, Hosseini SM. Prevalence of current and former smoking in industrial workers worldwide: a systematic review and meta-analysis. J Addict Dis 2021; 39:288-306. [PMID: 33416038 DOI: 10.1080/10550887.2020.1860422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
OBJECTIVES One of the health problems in recent decades is the prevalence of smoking in the world. In this study, the global prevalence of smoking in industrial workers was investigated using meta-analysis. METHOD The method of the present study was a systematic review and meta-analysis. Three scientific sources, PubMed, Web of Science, and Scopus, were selected for the search, and these databases were searched until September 2020. Random effects method was used for the analysis and then the analysis was performed for the type of smoking (Current, Former), gender, and continent. Heterogeneity was examined in all analyses. RESULT A total of 88 studies were included in the meta-analysis. The prevalence of smoking in industrial workers was 41% also the confidence interval was 35-48%. The prevalence of current smoking in industrial workers was 39% also the confidence interval was 29-48%. The prevalence of former smoking in industrial workers was 18% also the confidence interval was 13-22%. I2 heterogeneity test was 99.9%. DISCUSSION From the findings of the present study, it can be seen that industrial workers are more exposed to smoking compared to the general population, and this can put their health at greater risk.
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Affiliation(s)
- Sohrab Amiri
- Medicine, Quran and Hadith Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran.,Behavioral Sciences Research Center, Lifestyle Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Seyed Morteza Hosseini
- Medicine, Quran and Hadith Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
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Richter K, Peter L, Rodenbeck A, Weess HG, Riedel-Heller SG, Hillemacher T. Shiftwork and Alcohol Consumption: A Systematic Review of the Literature. Eur Addict Res 2021; 27:9-15. [PMID: 32454482 DOI: 10.1159/000507573] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Accepted: 03/27/2020] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Shiftwork can be a risk factor for a number of different somatic and psychological health conditions, especially sleep disorders. Shiftworkers sleep less than dayworkers, and 20-40% of them suffer from difficulties initiating and maintaining sleep, which result in reduced capacity for work and social life. A common coping strategy might be the use of alcohol, which presents a health and safety hazard as it further impairs sleep quality and exacerbates sleepiness in the workplace. This review aimed to assess the extent of such possible connections. METHODS We performed a systematic search of the scientific literature on shiftwork and alcohol consumption in PubMed, PsycInfo, and Cochrane Library. Only original studies comparing shiftworkers with non-shiftworkers were included. The recommendations of the Preferred Reporting Items of Systematic Reviews and Meta-Analyses were followed. RESULTS Fourteen articles are included in this review. Six studies report some kind of connection between shift- or nightwork and alcohol consumption, especially as a sleep aid. Conflicting or negative results are reported by 3 studies. DISCUSSION Shiftwork, especially working at night and in rotation shifts, is associated with binge drinking disorder in different professions. The reasons for pathological consumption of alcohol can be self-medication of sleep problems or coping with stress and psychosocial problems typical for shiftwork. Nurses aged over 50 years represent one important risk group. These results can be important for preventive programs against sleep disorders, including measures other than drinking alcohol as a sleep aid in the workplace of shiftworkers.
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Affiliation(s)
- Kneginja Richter
- University Clinic for Psychiatry and Psychotherapy, Paracelsus Medical University Nuremberg, Nuremberg, Germany,
| | - Lukas Peter
- University Clinic for Psychiatry and Psychotherapy, Paracelsus Medical University Nuremberg, Nuremberg, Germany
| | - Andrea Rodenbeck
- Evangelisches Fachkrankenhaus Göttingen-Weende, Göttingen, Germany
| | - Hans Günter Weess
- Pfalzklinikum Interdisziplinäres Schlafzentrum, Klingenmünster, Germany
| | - Steffi G Riedel-Heller
- Arbeitsmedizin und Public Health (ISAP), Institut für Sozialmedizin, Medizinische Fakultät, Universität Leipzig, Leipzig, Germany
| | - Thomas Hillemacher
- University Clinic for Psychiatry and Psychotherapy, Paracelsus Medical University Nuremberg, Nuremberg, Germany
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30
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Malaguarnera R, Ledda C, Filippello A, Frasca F, Francavilla VC, Ramaci T, Parisi MC, Rapisarda V, Piro S. Thyroid Cancer and Circadian Clock Disruption. Cancers (Basel) 2020; 12:E3109. [PMID: 33114365 PMCID: PMC7690860 DOI: 10.3390/cancers12113109] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 10/18/2020] [Accepted: 10/23/2020] [Indexed: 12/12/2022] Open
Abstract
Thyroid cancer (TC) represents the most common malignancy of the endocrine system, with an increased incidence across continents attributable to both improvement of diagnostic procedures and environmental factors. Among the modifiable risk factors, insulin resistance might influence the development of TC. A relationship between circadian clock machinery disfunction and TC has recently been proposed. The circadian clock machinery comprises a set of rhythmically expressed genes responsible for circadian rhythms. Perturbation of this system contributes to the development of pathological states such as cancer. Several clock genes have been found deregulated upon thyroid nodule malignant transformation. The molecular mechanisms linking circadian clock disruption and TC are still unknown but could include insulin resistance. Circadian misalignment occurring during shift work, jet lag, high fat food intake, is associated with increased insulin resistance. This metabolic alteration, in turn, is associated with a well-known risk factor for TC i.e., hyperthyrotropinemia, which could also be induced by sleep disturbances. In this review, we describe the mechanisms controlling the circadian clock function and its involvement in the cell cycle, stemness and cancer. Moreover, we discuss the evidence supporting the link between circadian clockwork disruption and TC development/progression, highlighting its potential implications for TC prevention, diagnosis and therapy.
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Affiliation(s)
- Roberta Malaguarnera
- School of Human and Social Sciences, “Kore” University of Enna, 94100 Enna, Italy; (R.M.); (V.C.F.); (T.R.); (M.C.P.)
| | - Caterina Ledda
- Department of Clinical and Experimental Medicine, Occupational Medicine, University of Catania, 95100 Catania, Italy;
| | - Agnese Filippello
- Department of Clinical and Experimental Medicine, Internal Medicine, Garibaldi-Nesima Hospital, University of Catania, 95122 Catania, Italy; (A.F.); (S.P.)
| | - Francesco Frasca
- Endocrinology Unit, Department of Clinical and Experimental Medicine, Garibaldi-Nesima Hospital, University of Catania, 95122 Catania, Italy;
| | - Vincenzo Cristian Francavilla
- School of Human and Social Sciences, “Kore” University of Enna, 94100 Enna, Italy; (R.M.); (V.C.F.); (T.R.); (M.C.P.)
| | - Tiziana Ramaci
- School of Human and Social Sciences, “Kore” University of Enna, 94100 Enna, Italy; (R.M.); (V.C.F.); (T.R.); (M.C.P.)
| | - Maria Chiara Parisi
- School of Human and Social Sciences, “Kore” University of Enna, 94100 Enna, Italy; (R.M.); (V.C.F.); (T.R.); (M.C.P.)
| | - Venerando Rapisarda
- Department of Clinical and Experimental Medicine, Occupational Medicine, University of Catania, 95100 Catania, Italy;
| | - Salvatore Piro
- Department of Clinical and Experimental Medicine, Internal Medicine, Garibaldi-Nesima Hospital, University of Catania, 95122 Catania, Italy; (A.F.); (S.P.)
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Zhang S, Huang P, Dai H, Li Q, Hu L, Peng J, Jiang S, Xu Y, Wu Z, Nie H, Zhang Z, Yin W, Zhang X, Lu J. TIMELESS regulates sphingolipid metabolism and tumor cell growth through Sp1/ACER2/S1P axis in ER-positive breast cancer. Cell Death Dis 2020; 11:892. [PMID: 33093451 PMCID: PMC7581802 DOI: 10.1038/s41419-020-03106-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 08/31/2020] [Accepted: 09/04/2020] [Indexed: 12/31/2022]
Abstract
Breast cancer is one of the most common female malignant cancers. Biorhythm disorder largely increases the risk of breast cancer. We aimed to investigate the biological functions and molecular mechanisms of circadian gene TIMELESS circadian regulator (TIM) in estrogen receptor (ER)-positive breast cancer and provide a new therapeutic target for breast cancer patients. Here, we explored that the expression of TIM was elevated in breast cancer, and high expression of TIM in cancer tissues was associated with poor prognosis, especially in the ER-positive breast cancer patients. In addition, we found that TIM promoted cell proliferation and enhanced mitochondrial respiration. TIM interacted with specificity protein 1 (Sp1) which contributes to upregulate the expression of alkaline ceramidase 2 (ACER2). Moreover, ACER2 is responsible for TIM-mediated promotive effects of cell growth and mitochondrial respiration. Collectively, our research unveiled a novel function of TIM in sphingolipid metabolism through interaction with Sp1. It provides a new theoretical explanation for the pathogenesis of breast cancer, and targeting TIM may serve as a potential therapeutic target for ER-positive breast cancer.
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Affiliation(s)
- Shan Zhang
- Department of Breast Surgery, Renji Hospital, School of Medicine, Shanghai Jiaotong University, No. 1630 Dongfang Road, Shanghai, 200127, China
| | - Peiqi Huang
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200240, China
| | - Huijuan Dai
- Department of Breast Surgery, Renji Hospital, School of Medicine, Shanghai Jiaotong University, No. 1630 Dongfang Road, Shanghai, 200127, China
| | - Qing Li
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200240, China
| | - Lipeng Hu
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200240, China
| | - Jing Peng
- Department of Breast Surgery, Renji Hospital, School of Medicine, Shanghai Jiaotong University, No. 1630 Dongfang Road, Shanghai, 200127, China
| | - Shuheng Jiang
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200240, China
| | - Yaqian Xu
- Department of Breast Surgery, Renji Hospital, School of Medicine, Shanghai Jiaotong University, No. 1630 Dongfang Road, Shanghai, 200127, China
| | - Ziping Wu
- Department of Breast Surgery, Renji Hospital, School of Medicine, Shanghai Jiaotong University, No. 1630 Dongfang Road, Shanghai, 200127, China
| | - Huizhen Nie
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200240, China
| | - Zhigang Zhang
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200240, China
| | - Wenjin Yin
- Department of Breast Surgery, Renji Hospital, School of Medicine, Shanghai Jiaotong University, No. 1630 Dongfang Road, Shanghai, 200127, China.
| | - Xueli Zhang
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200240, China.
| | - Jinsong Lu
- Department of Breast Surgery, Renji Hospital, School of Medicine, Shanghai Jiaotong University, No. 1630 Dongfang Road, Shanghai, 200127, China.
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Vanderstocken G, Marrow JP, Allwood MA, Stampfli MR, Simpson JA. Disruption of Physiological Rhythms Persist Following Cessation of Cigarette Smoke Exposure in Mice. Front Physiol 2020; 11:501383. [PMID: 33192539 PMCID: PMC7609783 DOI: 10.3389/fphys.2020.501383] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Accepted: 09/28/2020] [Indexed: 01/29/2023] Open
Abstract
Background Physiological rhythms in mammals are essential for maintaining health, whereas disruptions may cause or exacerbate disease pathogenesis. As such, our objective was to characterize how cigarette smoke exposure affects physiological rhythms of otherwise healthy mice using telemetry and cosinor analysis. Methods Female BALB/c mice were implanted with telemetry devices to measure body temperature, heart rate, systolic blood pressure (SBP), and activity. Following baseline measurements, mice were exposed to cigarette smoke for approximately 50 min twice daily during weekdays over 24 weeks. Physiological parameters were recorded after 1, 4, 8, and 24 weeks of exposure or after 4 weeks cessation following 4 weeks of cigarette smoke exposure. Results Acute cigarette smoke exposure resulted in anapyrexia, and bradycardia, with divergent effects on SBP. Long term, cigarette smoke exposure disrupted physiological rhythms after just 1 week, which persisted across 24 weeks of exposure (as shown by mixed effects on mesor, amplitude, acrophase, and goodness-of-fit using cosinor analysis). Four weeks of cessation was insufficient to allow full recovery of rhythms. Conclusion Our characterization of the pathophysiology of cigarette smoke exposure on physiological rhythms of mice suggests that rhythm disruption may precede and contribute to disease pathogenesis. These findings provide a clear rationale and guide for the future use of chronotherapeutics.
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Affiliation(s)
- Gilles Vanderstocken
- Department of Pathology and Molecular Medicine, McMaster Immunology Research Centre, McMaster University, Hamilton, ON, Canada.,Department of Medicine, Firestone Institute for Respiratory Health at St. Joseph's Healthcare, McMaster University, Hamilton, ON, Canada
| | - Jade P Marrow
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada.,IMPART Team Canada Investigator Network, Guelph, ON, Canada
| | - Melissa A Allwood
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada
| | - Martin R Stampfli
- Department of Pathology and Molecular Medicine, McMaster Immunology Research Centre, McMaster University, Hamilton, ON, Canada.,Department of Medicine, Firestone Institute for Respiratory Health at St. Joseph's Healthcare, McMaster University, Hamilton, ON, Canada.,State Key Laboratory of Respiratory Disease, Guangzhou Medical University, Guangzhou, China
| | - Jeremy A Simpson
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada.,IMPART Team Canada Investigator Network, Guelph, ON, Canada
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Chae CH. Validity of Breast Cancer Symptom Questionnaire and Its Relationship With Breast Ultrasonography in Young Female Night Workers. Saf Health Work 2020; 11:361-366. [PMID: 32995062 PMCID: PMC7502608 DOI: 10.1016/j.shaw.2020.04.008] [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: 03/13/2020] [Revised: 04/01/2020] [Accepted: 04/23/2020] [Indexed: 11/29/2022] Open
Abstract
Background This study aimed to identify the validity of breast cancer symptom questionnaire of worker's special health examination and its relationship with breast ultrasonography findings in young female night workers. Methods The breast cancer symptom questionnaire data of worker's special health examination and breast ultrasonography results in young female shift workers who worked in one electronic manufacture company were collected from 2014 to 2018. Results Of the 857 workers, 18 had a Breast Imaging Reporting and Database System category 4 or higher. Among other variables, shift work tenure alone was associated with the risk of having a Breast Imaging Reporting and Database System category higher than 4. The sensitivity, specificity, positive predictive value, and negative predictive value of the symptom questionnaire were 16.7%, 87.7%, 2.8%, and 98.0%, respectively. Conclusion The current breast cancer symptom questionnaire of the worker's special health examination is inappropriate due to its low sensitivity and positive predictive value. In the future, female night workers will need alternative measures for more accurate screening for breast cancer.
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Affiliation(s)
- Chang-Ho Chae
- Corresponding author. Department of Occupational and Environmental Medicine, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, 158, Paryong-ro, Masanhoewon-gu, Changwon-si, Gyeongsangnam-do, 51353, Republic of Korea.
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Pariollaud M, Lamia KA. Cancer in the Fourth Dimension: What Is the Impact of Circadian Disruption? Cancer Discov 2020; 10:1455-1464. [PMID: 32934020 PMCID: PMC7541588 DOI: 10.1158/2159-8290.cd-20-0413] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 06/08/2020] [Accepted: 07/01/2020] [Indexed: 11/16/2022]
Abstract
Circadian rhythms integrate many physiological pathways, helping organisms to align the timing of various internal processes to daily cycles in the external environment. Disrupted circadian rhythmicity is a prominent feature of modern society, and has been designated as a probable carcinogen. Here, we review multiple studies, in humans and animal models, that suggest a causal effect between circadian disruption and increased risk of cancer. We also discuss the complexity of this connection, which may depend on the cellular context. SIGNIFICANCE: Accumulating evidence points to an adverse effect of circadian disruption on cancer incidence and progression, indicating that time of day could influence the effectiveness of interventions targeting cancer prevention and management.
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Affiliation(s)
- Marie Pariollaud
- Department of Molecular Medicine, Scripps Research Institute, La Jolla, California
| | - Katja A Lamia
- Department of Molecular Medicine, Scripps Research Institute, La Jolla, California.
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35
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Hou Y, Liu L, Chen X, Li Q, Li J. Association between circadian disruption and diseases: A narrative review. Life Sci 2020; 262:118512. [PMID: 33010281 DOI: 10.1016/j.lfs.2020.118512] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 09/15/2020] [Accepted: 09/24/2020] [Indexed: 02/06/2023]
Abstract
Circadian rhythms play an important role in a wide range of human physiology and pathology. Individuals increasingly experience situations such as night-shift work schedules, likely leading to circadian disruption. Recent studies have also demonstrated that patients with other diseases often show symptoms of circadian disruption as manifested by the sleep-wake cycle and other biological rhythms. Circadian disruption often results in changes to the phase, period, and amplitude of the sleep-wake cycle, melatonin rhythm, and core body temperature. Several cardiometabolic, psychiatric, and neurodegenerative diseases are closely related to circadian disruption. Several interventions are also available, including phototherapy, exogenous melatonin, and exercise. The cumulative findings suggest that circadian disruption can increase risk for some cardiometabolic diseases. Circadian disruption also acts as a concomitant symptom of several psychiatric and neurodegenerative diseases. More attention should be paid to evaluating the impact of circadian disruption on these related diseases, as well as the benefits of the mitigation interventions for both circadian disruption and related diseases.
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Affiliation(s)
- Yuchao Hou
- Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China
| | - Lumin Liu
- Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China
| | - Xiaotong Chen
- Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China
| | - Qi Li
- Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China
| | - Jing Li
- Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China.
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Lim YC, Hoe VCW, Darus A, Bhoo-Pathy N. Association between night-shift work, sleep quality and health-related quality of life: a cross-sectional study among manufacturing workers in a middle-income setting. BMJ Open 2020; 10:e034455. [PMID: 32895261 PMCID: PMC7477971 DOI: 10.1136/bmjopen-2019-034455] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES Night-shift work may adversely affect health. This study aimed to determine the impact of night-shift work on health-related quality of life (HRQoL), and to assess whether sleep quality was a mediating factor. DESIGN A cross-sectional study. SETTING 11 manufacturing factories in Malaysia. PARTICIPANTS 177 night-shift workers aged 40-65 years old were compared with 317 non-night-shift workers. PRIMARY AND SECONDARY OUTCOMES Participants completed a self-administered questionnaire on socio-demographics and lifestyle factors, 12-item Short Form Health Survey V.2 (SF-12v2) and the Pittsburgh Sleep Quality Index (PSQI). The Baron and Kenny's method, Sobel test and multiple mediation model with bootstrapping were applied to determine whether PSQI score or its components mediated the association between night-shift work and HRQoL. RESULTS Night-shift work was associated with sleep impairment and HRQoL. Night-shift workers had significantly lower mean scores in all the eight SF-12 domains (p<0.001). Compared with non-night-shift workers, night-shift workers were significantly more likely to report poorer sleep quality, longer sleep latency, shorter sleep duration, sleep disturbances and daytime dysfunction (p<0.001). Mediation analyses showed that PSQI global score mediated the association between night-shift work and HRQoL. 'Subjective sleep quality' (indirect effect=-0.24, SE=0.14 and bias corrected (BC) 95% CI -0.58 to -0.01) and 'sleep disturbances' (indirect effect=-0.79, SE=0.22 and BC 95% CI -1.30 to -0.42) were mediators for the association between night-shift work and physical well-being, whereas 'sleep latency' (indirect effect=-0.51, SE=0.21 and BC 95% CI -1.02 to -0.16) and 'daytime dysfunction' (indirect effect=-1.11, SE=0.32 and BC 95% CI -1.86 to -0.58) were mediators with respect to mental well-being. CONCLUSION Sleep quality partially explains the association between night-shift work and poorer HRQoL. Organisations should treat the sleep quality of night-shift workers as a top priority area for action to improve their employees' overall wellbeing.
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Affiliation(s)
- Yin Cheng Lim
- Department of Social and Preventive Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
- Environmental Health Research Centre, Institute Medical Research (IMR), National Institute of Health, Kuala Lumpur, Malaysia
| | - Victor C W Hoe
- Department of Social and Preventive Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
- Centre for Occupational and Environmental Health, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Azlan Darus
- Social Security Organization, Kuala Lumpur, Malaysia
| | - Nirmala Bhoo-Pathy
- Department of Social and Preventive Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
- Centre for Epidemiology and Evidence-Based Practice, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
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Arafa A, Eshak ES, Iso H, Muraki I, Tamakoshi A. Night Work, Rotating Shift Work and the Risk of Cancer in Japanese Men and Women: the JACC Study. J Epidemiol 2020; 31:585-592. [PMID: 32801280 PMCID: PMC8593580 DOI: 10.2188/jea.je20200208] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Background Limited epidemiological evidence has suggested a positive relationship between night shift work and the risk of cancer. Herein, we investigated the prospective association between different forms of work schedule and the risk of numerous cancers and all-cause cancer among Japanese men and women. Methods This cohort study included 45,390 working men and women aged 40–79 years and registered in the Japan Collaborative Cohort Study (JACC Study). The Cox proportional hazards models were used to calculate the hazard ratios (HRs) and their 95% confidence intervals (CIs) for incident cancer among those who reported engagement in night work and rotating shift work for their longest occupations compared with day work. Results Within a median follow-up duration of 14.2 years, 2,283 (9.4%) men and 1,309 (4.5%) women developed cancer. Among men, rotating shift work was significantly associated with increased risk of esophageal cancer (HR 2.47; 95% CI, 1.42–4.31) and decreased risk of liver cancer (HR 0.54; 95% CI, 0.30–0.98). Also, rotating shift work tended to be associated with the increased risk of prostate cancer (HR 1.42; 95% CI, 0.95–2.12). Night work and rotating shift work were not related to the risk of all-cause cancer in either sex. Conclusion Rotating shift work might contribute to the increased risk of esophageal cancer and prostate cancer and the decreased risk of liver cancer among Japanese men.
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Affiliation(s)
- Ahmed Arafa
- Public Health, Department of Social Medicine, Osaka University Graduate School of Medicine.,Department of Public Health, Faculty of Medicine, Beni-Suef University
| | - Ehab S Eshak
- Public Health, Department of Social Medicine, Osaka University Graduate School of Medicine.,Department of Public Health, Faculty of Medicine, Minia University
| | - Hiroyasu Iso
- Public Health, Department of Social Medicine, Osaka University Graduate School of Medicine
| | - Isao Muraki
- Public Health, Department of Social Medicine, Osaka University Graduate School of Medicine
| | - Akiko Tamakoshi
- Department of Public Health, Graduate School of Medicine, Hokkaido University
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Funderburk L, Cardaci T, Fink A, Taylor K, Rohde J, Harris D. Healthy Behaviors through Behavioral Design-Obesity Prevention. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:E5049. [PMID: 32674287 PMCID: PMC7400269 DOI: 10.3390/ijerph17145049] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 07/07/2020] [Accepted: 07/08/2020] [Indexed: 12/22/2022]
Abstract
Evidence for behavior modification for improved health outcomes was evaluated for nutrition, physical activity (PA), and indoor environmental quality (IEQ). The databases searched included LISTA, PubMed, and Web of Science, with articles rated using an a priori baseline score of 70/100 to establish inclusion. The initial search produced 52,847 articles, 63 of which were included in the qualitative synthesis. Thirteen articles met inclusion for nutrition: cafeteria interventions, single interventions, and vending interventions. Seventeen articles on physical activity were included: stair use, walking, and adjustable desks. For IEQ, 33 articles met inclusion: circadian disruption, view and natural light, and artificial light. A narrative synthesis was used to find meaningful connections across interventions with evidence contributing to health improvements. Commonalities throughout the nutrition studies included choice architecture, increasing the availability of healthy food items, and point-of-purchase food labeling. Interventions that promoted PA included stair use, sit/stand furniture, workplace exercise facilities and walking. Exposure to natural light and views of natural elements were found to increase PA and improve sleep quality. Overexposure to artificial light may cause circadian disruption, suppressing melatonin and increasing risks of cancers. Overall, design that encourages healthy behaviors may lower risks associated with chronic disease.
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Affiliation(s)
- LesLee Funderburk
- Robbins College of Health and Human Sciences, Baylor University, Waco, TX 76798, USA; (T.C.); (A.F.); (K.T.); (D.H.)
| | - Thomas Cardaci
- Robbins College of Health and Human Sciences, Baylor University, Waco, TX 76798, USA; (T.C.); (A.F.); (K.T.); (D.H.)
| | - Andrew Fink
- Robbins College of Health and Human Sciences, Baylor University, Waco, TX 76798, USA; (T.C.); (A.F.); (K.T.); (D.H.)
| | - Keyanna Taylor
- Robbins College of Health and Human Sciences, Baylor University, Waco, TX 76798, USA; (T.C.); (A.F.); (K.T.); (D.H.)
| | - Jane Rohde
- JSR Associates, Catonsville, MD 21228, USA;
| | - Debra Harris
- Robbins College of Health and Human Sciences, Baylor University, Waco, TX 76798, USA; (T.C.); (A.F.); (K.T.); (D.H.)
- JSR Associates, Catonsville, MD 21228, USA;
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Dun A, Zhao X, Jin X, Wei T, Gao X, Wang Y, Hou H. Association Between Night-Shift Work and Cancer Risk: Updated Systematic Review and Meta-Analysis. Front Oncol 2020; 10:1006. [PMID: 32656086 PMCID: PMC7324664 DOI: 10.3389/fonc.2020.01006] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 05/21/2020] [Indexed: 12/12/2022] Open
Abstract
Background: Nightshift work introduces light at night and causes circadian rhythm among night workers, who are considered to be at increased risk of cancer. However, in the last 2 years, nine population-based studies reported insignificant associations between night-shift work and cancer risks. We aimed to conduct an updated systematic review and meta-analysis to ascertain the effect of night-shift work on the incidence of cancers. Methods: Our protocol was registered in PROSPERO and complied with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). Embase, PubMed, and Web of Science databases were used to comprehensively search studies published up to May 31, 2019. The random-effect model (Der Simonian-Laird method) was carried out to combine the risk estimates of night-shift work for cancers. The dose-response meta-analysis was performed to verify whether the association was in a dose-dependent manner. Results: Our literature searching retrieved 1,660 publications. Included in the meta-analyses were 57 eligible studies with 8,477,849 participants (mean age 55 years; 2,560,886 men, 4,220,154 women, and 1,696,809 not mentioned). The pooled results showed that night-shift work was not associated with the risk of breast cancer (OR = 1.009, 95% CI = 0.984-1.033), prostate cancer (OR = 1.027, 95% CI = 0.982-1.071), ovarian cancer (OR = 1.027, 95% CI = 0.942-1.113), pancreatic cancer (OR = 1.007, 95% CI = 0.910-1.104), colorectal cancer (OR = 1.016, 95% CI = 0.964-1.068), non-Hodgkin's lymph (OR = 1.046, 95% CI = 0.994-1.098), and stomach cancer (OR = 1.064, 95% CI = 0.971-1.157), while night-shift work was associated with a reduction of lung cancer (OR = 0.949, 95% CI = 0.903-0.996), and skin cancer (OR = 0.916, 95% CI = 0.879-0.953). The dose-response meta-analysis found that cancer risk was not significantly elevated with the increased light exposure of night- shift work. Conclusion: This systematic review of 57 observational studies did not find an overall association between ever-exposure to night-shift work and the risk of breast, prostate ovarian, pancreatic, colorectal, non-Hodgkin's lymph, and stomach cancers.
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Affiliation(s)
- Aishe Dun
- School of Basic Medical Science, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an, China
| | - Xuan Zhao
- School of Public Health, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an, China
| | - Xu Jin
- School of Basic Medical Science, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an, China
| | - Tao Wei
- School of Basic Medical Science, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an, China
| | - Xiang Gao
- Department of Otolaryngology, Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Youxin Wang
- Beijing Key Laboratory of Clinical Epidemiology, School of Public Health, Capital Medical University, Beijing, China
| | - Haifeng Hou
- School of Public Health, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an, China
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40
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Rivera AS, Akanbi M, O’Dwyer LC, McHugh M. Shift work and long work hours and their association with chronic health conditions: A systematic review of systematic reviews with meta-analyses. PLoS One 2020; 15:e0231037. [PMID: 32240254 PMCID: PMC7117719 DOI: 10.1371/journal.pone.0231037] [Citation(s) in RCA: 93] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 03/13/2020] [Indexed: 01/06/2023] Open
Abstract
Background Previous reviews have demonstrated that shift work and long work hours are associated with increased risk for chronic conditions. However, these reviews did not comprehensively assessed the body of evidence, and some were not conducted in a systematic manner. A better understanding of the health consequences of shift work and long work hours will aid in creating policy and practice recommendations. This review revisits the epidemiologic evidence on the association of shift work and long work hours with chronic conditions with particular emphasis on assessing the quality of the evidence. Methods and findings We conducted a systematic review of systematic reviews with meta-analyses (SR-MA) that assessed the link between shift work or long work hours and chronic conditions (PROSPERO CRD42019122084). We evaluated the risk of bias of each SR-MA using AMSTAR v2 and assessed the overall evidence for each condition using the GRADE approach. We included 48 reviews covering cancers, cardiovascular diseases, metabolic syndrome and related conditions, pregnancy complications, depression, hypertension, and injuries. On average, only 7 of 16 AMSTAR items were fulfilled. Few SR-MAs had a registered protocol and nearly all failed to conduct a comprehensive search. We found moderate grade evidence linking shift work to breast cancer and long work hours to stroke. We found low grade evidence linking both shift work and long work hours with low to moderate increase in risk for some pregnancy complications and cardiovascular diseases. Low grade evidence also link long work hours and depression. Conclusions Moderate grade evidence suggest that shift work and long work hours increase the risk of breast cancer and stroke, but the evidence is unclear on other chronic conditions. There is a need for high-quality studies to address this gap. Stakeholders should be made aware of these increased risks, and additional screening and prevention should be considered, particularly for workers susceptible to breast cancer and stroke.
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Affiliation(s)
- Adovich S. Rivera
- Institute for Public Health and Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
- * E-mail:
| | - Maxwell Akanbi
- Institute for Public Health and Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Linda C. O’Dwyer
- Institute for Public Health and Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
- Galter Health Sciences Library and Learning Center, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Megan McHugh
- Institute for Public Health and Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
- Department of Emergency Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
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41
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Fore R, Hart JE, Choirat C, Thompson JW, Lynch K, Laden F, Chavarro JE, James P. Embedding Mobile Health Technology into the Nurses' Health Study 3 to Study Behavioral Risk Factors for Cancer. Cancer Epidemiol Biomarkers Prev 2020; 29:736-743. [PMID: 32098894 PMCID: PMC7171700 DOI: 10.1158/1055-9965.epi-19-1386] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 02/11/2020] [Accepted: 02/18/2020] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Physical activity and sleep are behavioral risk factors for cancer that may be influenced by environmental exposures, including built and natural environments. However, many studies in this area are limited by residence-based exposure assessment and/or self-reported, time-aggregated measures of behavior. METHODS The Nurses' Health Study 3 (NHS3) Mobile Health Substudy is a pilot study of 500 participants in the prospective NHS3 cohort who use a smartphone application and a Fitbit for seven-day periods, four times over a year, to measure minute-level location, physical activity, heart rate, and sleep. RESULTS We have collected data on 435 participants, comprising over 6 million participant-minutes of heart rate, step, sleep, and location. Over 90% of participants had five days of ≥600 minutes of Fitbit wear-time in their first sampling week, and this percentage dropped to 70% for weeks 2 to 4. Over 819 sampling weeks, we observed an average of 7,581 minutes of heart rate and step data [interquartile range (IQR): 6,651-9,645] per participant-week, and >2 million minutes of sleep in over 5,700 sleep bouts. We have recorded location data for 5,237 unique participant-days, averaging 104 location observations per participant-day (IQR: 103-107). CONCLUSIONS This study describes a protocol to incorporate mobile health technology into a nationwide prospective cohort to measure high-resolution objective data on environment and behavior. IMPACT This project could provide translational insights into interventions for urban planning to optimize opportunities for physical activity and healthy sleep patterns to reduce cancer risk.See all articles in this CEBP Focus section, "Modernizing Population Science."
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Affiliation(s)
- Ruby Fore
- Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, Massachusetts
| | - Jaime E Hart
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
- Harvard T.H. Chan School of Public Health, Boston, Massachusetts
| | | | - Jennifer W Thompson
- Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, Massachusetts
| | - Kathleen Lynch
- Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, Massachusetts
| | - Francine Laden
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
- Harvard T.H. Chan School of Public Health, Boston, Massachusetts
| | - Jorge E Chavarro
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
- Harvard T.H. Chan School of Public Health, Boston, Massachusetts
| | - Peter James
- Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, Massachusetts.
- Harvard T.H. Chan School of Public Health, Boston, Massachusetts
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42
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Obesity and Circadian Cycle of Sleep and Wakefulness: Common Points and Prospects of Therapy. ACTA BIOMEDICA SCIENTIFICA 2020. [DOI: 10.29413/abs.2020-5.1.3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The prevalence of obesity in recent years has assumed the character of a non-communicable epidemic. Wherein, the standard approaches for its treatment are not always successful. Meanwhile, obesity remains one of the main causes of the formation of a number of some serious diseases, such as cardiovascular, diabetes, cancer, etc. and death from them. In search of alternative and more adequate methods of obesity treatment and preventing its complications, recent studies are aimed at further identifying new associations and revealing the pathophysiological mechanisms underlying excessive weight gain. It should be noted an increasing amount of chronobiological studies that raised awareness of the key role of the body’s circadian rhythms and its main regulator, melatonin, responsible for the temporary organization of the main physiological (including metabolism) processes throughout the 24-h day, in the development and progression of obesity. This review is devoted to the consideration of mutually directed interactions between the circadian system and metabolism; attempts have been made to explain the role of sleep-wake cycle disruptions in the excess accumulation of adipose tissue and the formation of obesity and its comorbidities, as well as detailed therapeutic principles based on normalizing disruption of body clocks using time-coordinated approaches to food intake, physical activity, the effects of non-drug methods and pharmacological substances (chronobiotics), which represents a novel and promising ways to prevent or treat obesity and associated diseases.
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43
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Yousef E, Mitwally N, Noufal N, Tahir MR. Shift work and risk of skin cancer: A systematic review and meta-analysis. Sci Rep 2020; 10:2012. [PMID: 32029836 PMCID: PMC7005031 DOI: 10.1038/s41598-020-59035-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 01/23/2020] [Indexed: 12/21/2022] Open
Abstract
Shift work with circadian disruption has been considered as a carcinogenic risk factor for skin cancer. The few prior studies that investigated the association between shift work and skin cancer have inconclusive results. Our main objective was to evaluate the associations between shift work and the risks of different types of skin cancer. We systematically searched PubMed, Web of Science, Cochrane Library, EMBASE and Science Direct until October 2018 for studies that included a relationship between shift work and skin cancer. Our search yielded 193 articles and 9 studies met the criteria for our review. The included studies involved 3,579,147 participants and 17,308 skin cancer cases. Overall, ever shift work, was associated with increased risk of melanoma (RR = 1.10, 95% CI = 1.05–1.16) and a significant decrease in the risk of BCC (RR = 0.90, 95% CI = 0.88–0.93). No association between shift work and the risk of SCC was detected. Interestingly, our dose response analysis demonstrated that the risk of melanoma cumulatively increases by 2% for every year of shift work (RR = 1.02; 95% CI = 1.00–1.03). In conclusion, shift work is associated with increased risk of melanoma and deceased risk of BCC. Further studies are needed to confirm our findings and to elucidate the related potential biological mechanisms.
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Affiliation(s)
- Einas Yousef
- Department of Basic Medical Sciences, College of Medicine, Dar Al Uloom University, Riyadh, KSA, Saudi Arabia. .,Histology Department, Faculty of Medicine, Menoufia University, Shebin Elkom, Egypt.
| | - Noha Mitwally
- Department of Basic Medical Sciences, College of Medicine, Dar Al Uloom University, Riyadh, KSA, Saudi Arabia
| | - Noha Noufal
- Department of Basic Medical Sciences, College of Medicine, Dar Al Uloom University, Riyadh, KSA, Saudi Arabia.,Pathology Department, Faculty of Medicine, Suez Canal University, Ismailia, Egypt
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44
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Sunde E, Mrdalj J, Pedersen T, Thun E, Bjorvatn B, Grønli J, Harris A, Waage S, Pallesen S. Role of nocturnal light intensity on adaptation to three consecutive night shifts: a counterbalanced crossover study. Occup Environ Med 2020; 77:249-255. [PMID: 32019847 DOI: 10.1136/oemed-2019-106049] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 12/27/2019] [Accepted: 01/12/2020] [Indexed: 11/04/2022]
Abstract
OBJECTIVES To investigate how a standard ceiling mounted light-emitting diode (LED)-based bright light intervention affected alertness and neurobehavioural performance during three consecutive simulated night shifts, and timing of circadian rhythm after the shifts. METHODS Twenty seven participants (20 females, 21.4±2.1 years; mean±SD) worked three consecutive night shifts (23:00-07:00) under a full-spectrum (4000 K) bright light (900 lx) and a standard light (90 lx) condition in a counterbalanced crossover design (separated by 4 weeks). Subjective alertness (Karolinska Sleepiness Scale) and neurobehavioural performance (Psychomotor Vigilance Task and Digit Symbol Substitution Test) were assessed five times during each shift. Salivary dim-light melatonin onset (DLMO) was assessed before and after the shifts. The simulated night shifts were conducted in a laboratory while the participants slept at home. RESULTS Subjective alertness and neurobehavioural performance deteriorated during the night shifts in both light conditions. However, bright light significantly reduced alertness and performance decrements as compared with standard light. For a subset of the participants, DLMO was delayed by a mean of 3:17±0:23 (mean±SEM) hours after three night shifts in bright light and by 2:06±0:15 hours in standard light, indicating that bright light causes larger phase delay. CONCLUSION Bright light improved performance and alertness during simulated night shifts and improved adaptation to night work. Bright light administered by ceiling mounted LED luminaires has the potential to improve adaptation to night work and reduce the risk of accidents and injuries among night workers. TRIAL REGISTRATION NUMBER NCT03203538.
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Affiliation(s)
- Erlend Sunde
- Department of Psychosocial Science, University of Bergen, Bergen, Norway
| | - Jelena Mrdalj
- Department of Biological and Medical Psychology, University of Bergen, Bergen, Norway
| | - Torhild Pedersen
- Department of Biological and Medical Psychology, University of Bergen, Bergen, Norway
| | - Eirunn Thun
- Department of Clinical Psychology, University of Bergen, Bergen, Norway
| | - Bjørn Bjorvatn
- Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway.,Norwegian Competence Center for Sleep Disorders, Haukeland University Hospital, Bergen, Norway
| | - Janne Grønli
- Department of Biological and Medical Psychology, University of Bergen, Bergen, Norway
| | - Anette Harris
- Department of Psychosocial Science, University of Bergen, Bergen, Norway
| | - Siri Waage
- Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway.,Norwegian Competence Center for Sleep Disorders, Haukeland University Hospital, Bergen, Norway
| | - Ståle Pallesen
- Department of Psychosocial Science, University of Bergen, Bergen, Norway.,Norwegian Competence Center for Sleep Disorders, Haukeland University Hospital, Bergen, Norway
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45
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Effects of exposure to night shift work on cancer risk in workers. Hippokratia 2019. [DOI: 10.1002/14651858.cd013466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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46
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Night Shift Work and Risk of Breast Cancer in Women. Arch Med Res 2019; 50:393-399. [PMID: 31689664 DOI: 10.1016/j.arcmed.2019.10.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 10/22/2019] [Indexed: 01/12/2023]
Abstract
BACKGROUND Night shift work involving circadian disruption has been associated with increased breast cancer rates in some epidemiological studies, but the evidence is still on debate. AIM OF THE STUDY The objective of this study is to assess the association between night shift work and breast cancer in Mexican women. METHODS A Case-control study was conducted with incident cases of breast cancer at the Instituto de Seguridad Social del Estado de México y Municipios. Cases were interviewed about past exposures prior to the final diagnosis. Controls were women without breast cancer matched on multiple sociodemographic characteristics. RESULTS 101 cases and 101 matched controls were interviewed; this small sample size provided consistent, but wide estimates of the assessed associations. The multivariate conditional logistic regression showed that breast-feeding was associated with reduced risk for breast cancer (OR 0.12; 95% CI: 0.02-0.60); women who experienced early menarche (12 years) were more likely to develop breast cancer (OR 18.58; 95% CI 18: 2.19-148). Women who worked at night were more likely to develop breast cancer compared to women who never did (OR = 8.58; 95% CI: 2.19-33.8). CONCLUSIONS Our results are consistent with studies from other countries, which positively associated night shift work with breast cancer.
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47
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How Do Nurses Cope with Shift Work? A Qualitative Analysis of Open-Ended Responses from a Survey of Nurses. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16203821. [PMID: 31658715 PMCID: PMC6843180 DOI: 10.3390/ijerph16203821] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 10/02/2019] [Accepted: 10/05/2019] [Indexed: 02/03/2023]
Abstract
Nurses are frequently required to engage in shift work given the 24/7 nature of modern healthcare provision. Despite the health and wellbeing costs associated with shift work, little is known about the types of coping strategies employed by nurses. It may be important for nurses to adopt strategies to cope with shift work in order to prevent burnout, maintain wellbeing, and ensure high quality care to patients. This paper explores common strategies employed by nurses to cope with shift work. A workforce survey was completed by 449 shift working nurses that were recruited from a major metropolitan health service in Melbourne, Australia. Responses to open-ended questions about coping strategies were analysed using the framework approach to thematic analysis. Four interconnected main themes emerged from the data: (i) health practices, (ii) social and leisure, (iii) cognitive coping strategies, and (iv) work-related coping strategies. Although a range of coping strategies were identified, sleep difficulties often hindered the effective use of coping strategies, potentially exacerbating poor health outcomes. Findings suggest that in addition to improving nurses' abilities to employ effective coping strategies on an individual level, workplaces also play an important role in facilitating nurses' wellbeing.
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48
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Pham TT, Hwang M, Lee ES, Kong SY, Jung SY, Lee S, Kim J, Ha M, Kim SY, Park B. Night-shift work and risk of breast cancer in Korean women. Clin Epidemiol 2019; 11:743-751. [PMID: 31686916 PMCID: PMC6709512 DOI: 10.2147/clep.s199521] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Accepted: 07/26/2019] [Indexed: 12/24/2022] Open
Abstract
Purpose This study evaluated the association between night-shift work (NSW) and breast cancer risk as well as subtypes of breast cancer in Korean women. Patients and methods The study population included 1721 female breast cancer cases and 1721 female controls matched by age. The subtypes of breast cancer were determined based on estrogen, progesterone, and human epidermal growth factor receptor 2 statuses by reviewing pathology reports. Odds ratios (ORs) for NSW experience, age at commencement of NSW, frequency, and duration were estimated using conditional logistic regression and were adjusted for confounders such as parity and socioeconomic status–related factors. Results Among 1721 pairs, 10.58% of cases and 9.59% of controls had ever engaged in NSW. NSW was not associated with breast cancer risk in terms of ever having night-shift exposure (adjusted OR was 1.11, 95% confidence interval [CI] =0.89–1.40), duration, frequency, or cumulative working time. The OR for >10 years of lifetime duration of NSW was 1.55 (95% CI 0.89–2.69, P=0.124). In addition, the OR for >35,000 hrs for cumulative frequency of night work was OR=1.42 (95% CI=0.73–2.74, P=0.304). There was no heterogeneity in ORs of ever having NSW and cumulative duration of NSW between four subtypes of breast cancer. Conclusion NSW including long-term and heavy working exposure was not associated with breast cancer risk.
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Affiliation(s)
- Thu-Thi Pham
- National Cancer Center Graduate School of Cancer Science and Policy, Goyang, Republic of Korea
| | - Minji Hwang
- Department of Medicine, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Eun-Sook Lee
- National Cancer Center Graduate School of Cancer Science and Policy, Goyang, Republic of Korea.,Research Institute, National Cancer Center, Goyang, Republic of Korea.,Hospital, National Cancer Center, Goyang, Republic of Korea
| | - Sun-Young Kong
- National Cancer Center Graduate School of Cancer Science and Policy, Goyang, Republic of Korea.,Research Institute, National Cancer Center, Goyang, Republic of Korea.,Hospital, National Cancer Center, Goyang, Republic of Korea
| | - So-Youn Jung
- Research Institute, National Cancer Center, Goyang, Republic of Korea.,Hospital, National Cancer Center, Goyang, Republic of Korea
| | - Seeyoun Lee
- Hospital, National Cancer Center, Goyang, Republic of Korea
| | - Jeongseon Kim
- National Cancer Center Graduate School of Cancer Science and Policy, Goyang, Republic of Korea.,Research Institute, National Cancer Center, Goyang, Republic of Korea
| | - Mina Ha
- Dankook University College of Medicine, Cheonan, Republic of Korea
| | - Sun-Young Kim
- National Cancer Center Graduate School of Cancer Science and Policy, Goyang, Republic of Korea
| | - Boyoung Park
- Department of Medicine, Hanyang University College of Medicine, Seoul, Republic of Korea
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49
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Night shift work and risk of breast cancer in women: the Generations Study cohort. Br J Cancer 2019; 121:172-179. [PMID: 31138896 PMCID: PMC6738051 DOI: 10.1038/s41416-019-0485-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 05/02/2019] [Indexed: 12/11/2022] Open
Abstract
Background It is plausible that night shift work could affect breast cancer risk, possibly by melatonin suppression or circadian clock disruption, but epidemiological evidence is inconclusive. Methods Using serial questionnaires from the Generations Study cohort, we estimated hazard ratios (HR) and 95% confidence intervals (95%CI) for breast cancer in relation to being a night shift worker within the last 10 years, adjusted for potential confounders. Results Among 102,869 women recruited in 2003–2014, median follow-up 9.5 years, 2059 developed invasive breast cancer. The HR in relation to night shift work was 1.00 (95%CI: 0.86–1.15). There was a significant trend with average hours of night work per week (P = 0.035), but no significantly raised risks for hours worked per night, nights worked per week, average hours worked per week, cumulative years of employment, cumulative hours, time since cessation, type of occupation, age starting night shift work, or age starting in relation to first pregnancy. Conclusions The lack of overall association, and no association with all but one measure of dose, duration, and intensity in our data, does not support an increased risk of breast cancer from night shift work in women.
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50
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Engel CL, Sharima Rasanayagam M, Gray JM, Rizzo J. Work and Female Breast Cancer: The State of the Evidence, 2002-2017. New Solut 2019; 28:55-78. [PMID: 29658425 DOI: 10.1177/1048291118758460] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The authors undertook a scoping review to assess the literature from 2002 to 2017 on the relationship between occupation and female breast cancer. Case-control, cohort, and meta-analytic studies suggest that women working as flight attendants, in medical professions, some production positions, sales and retail, and scientific technical staff are likely to have elevated risk of breast cancer. In addition, occupational exposures to night-shift work, ionizing radiation, some chemicals, job stress, and sedentary work may increase risk of breast cancer. Occupational physical activity appears to decrease risk. Workplace exposures to passive smoke and occupational exposure to nonionizing radiation do not appear to affect breast cancer risk. Some studies of occupational categories and workplace exposures indicate that risk may be modified by duration of exposure, timing of exposure, dose, hormone-receptor subtypes, and menopausal status at diagnosis. The compelling data from this review reveal a substantial need for further research on occupation and breast cancer.
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Affiliation(s)
- Connie L Engel
- 1 Breast Cancer Prevention Partners, San Francisco, CA, USA
| | | | - Janet M Gray
- 1 Breast Cancer Prevention Partners, San Francisco, CA, USA
| | - Jeanne Rizzo
- 1 Breast Cancer Prevention Partners, San Francisco, CA, USA
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