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Author Grundy, A.; Richardson, H.; Burstyn, I.; Lohrisch, C.; SenGupta, S.K.; Lai, A.S.; Lee, D.; Spinelli, J.J.; Aronson, K.J.
Title Increased risk of breast cancer associated with long-term shift work in Canada Type Journal Article
Year 2013 Publication Occupational and Environmental Medicine Abbreviated Journal Occup Environ Med
Volume 70 Issue 12 Pages 831-838
Keywords Human Health; Adult; Aged; Aged, 80 and over; Breast Neoplasms/epidemiology/*etiology/metabolism; British Columbia/epidemiology; Case-Control Studies; Female; Humans; Menopause; Middle Aged; Occupational Diseases/*epidemiology; Ontario/epidemiology; Receptors, Estrogen/metabolism; Receptors, Progesterone/metabolism; Risk Factors; Tumor Markers, Biological/metabolism; Work Schedule Tolerance/*physiology; Young Adult
Abstract OBJECTIVES: Long-term night work has been suggested as a risk factor for breast cancer; however, additional studies with more comprehensive methods of exposure assessment to capture the diversity of shift patterns are needed. As well, few previous studies have considered the role of hormone receptor subtype. METHODS: Relationships between night shift work and breast cancer were examined among 1134 breast cancer cases and 1179 controls, frequency-matched by age in Vancouver, British Columbia, and Kingston, Ontario. Self-reported lifetime occupational histories were assessed for night shift work, and hormone receptor status obtained from tumour pathology records. RESULTS: With approximately one-third of cases and controls ever employed in night shift work, associations with duration demonstrated no relationship between either 0-14 or 15-29 years, while an association was apparent for >/=30 years (OR=2.21, 95% CI 1.14 to 4.31). This association with long-term night shift work is robust to alternative definitions of prolonged shift work, with similar results for both health and non-health care workers. CONCLUSIONS: Long-term night shift work in a diverse mix of occupations is associated with increased breast cancer risk and not limited to nurses, as in most previous studies.
Address Department of Public Health Sciences and Queen's Cancer Research Institute, Queen's University, Kingston, Ontario, Canada
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Language English Summary Language Original Title
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ISSN 1351-0711 ISBN Medium
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Notes PMID:23817841 Approved no
Call Number LoNNe @ kagoburian @ Serial (down) 757
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Author Edensor, T.
Title The Gloomy City: Rethinking the Relationship between Light and Dark Type Journal Article
Year 2013 Publication Urban Studies Abbreviated Journal
Volume 52 Issue 3 Pages 422-438
Keywords Society
Abstract Given geography’s neglect of illuminated and dark space, this paper explores the various qualities of darkness that have contributed to the experience of the city. In recent history, darkness has been conceptualised negatively, for instance, with the ‘dark side’ and the ‘forces of darkness’ conceived as the opposite of that which enlightens and illuminates. Perhaps such metaphors testify to earlier urban conditions in which perils of all sorts lurked in the nocturnal city and doors were closed when darkness fell. Yet modern illumination has transformed nocturnal urban experience, producing cityscapes of regulation, hierarchical selectiveness, consumption, fantasy and imagination. However, this article suggests that the more positive qualities of darkness have been overlooked: the potential for conviviality and intimacy to be fostered in the dark, the aesthetics and atmospherics of darkness and shadow, the possibilities for apprehending the world through other senses and the dismissal of the star-saturated sky.
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Notes Approved no
Call Number LoNNe @ kagoburian @ Serial (down) 739
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Author Earth Observation Group, and National Oceanic and Atmospheric Administration (NOAA)
Title VIIRS Nighttime Lights – 2012, edited, National Geophysical Data Center Type Journal Article
Year 2013 Publication Abbreviated Journal
Volume Issue Pages
Keywords Remote Sensing
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Notes Approved no
Call Number LoNNe @ kagoburian @ Serial (down) 738
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Author Bauer, S.E.; Wagner, S.E.; Burch, J.; Bayakly, R.; Vena, J.E.
Title A case-referent study: light at night and breast cancer risk in Georgia Type Journal Article
Year 2013 Publication International Journal of Health Geographics Abbreviated Journal Int J Health Geogr
Volume 12 Issue Pages 23
Keywords Human Health; Aged; Aged, 80 and over; Breast Neoplasms/*diagnosis/*epidemiology; Case-Control Studies; Circadian Rhythm/*physiology; Female; Georgia/epidemiology; Humans; Lighting/*adverse effects; Lung Neoplasms/diagnosis/epidemiology; Middle Aged; Registries; Risk Factors
Abstract BACKGROUND: Literature has identified detrimental health effects from the indiscriminate use of artificial nighttime light. We examined the co-distribution of light at night (LAN) and breast cancer (BC) incidence in Georgia, with the goal to contribute to the accumulating evidence that exposure to LAN increases risk of BC. METHODS: Using Georgia Comprehensive Cancer Registry data (2000-2007), we conducted a case-referent study among 34,053 BC cases and 14,458 lung cancer referents. Individuals with lung cancer were used as referents to control for other cancer risk factors that may be associated with elevated LAN, such as air pollution, and since this cancer type was not previously associated with LAN or circadian rhythm disruption. DMSP-OLS Nighttime Light Time Series satellite images (1992-2007) were used to estimate LAN levels; low (0-20 watts per sterradian cm(2)), medium (21-41 watts per sterradian cm(2)), high (>41 watts per sterradian cm(2)). LAN levels were extracted for each year of exposure prior to case/referent diagnosis in ArcGIS. RESULTS: Odds ratios (OR) and 95% confidence intervals (CI) were estimated using logistic regression models controlling for individual-level year of diagnosis, race, age at diagnosis, tumor grade, stage; and population-level determinants including metropolitan statistical area (MSA) status, births per 1,000 women aged 15-50, percentage of female smokers, MSA population mobility, and percentage of population over 16 in the labor force. We found that overall BC incidence was associated with high LAN exposure (OR = 1.12, 95% CI [1.04, 1.20]). When stratified by race, LAN exposure was associated with increased BC risk among whites (OR = 1.13, 95% CI [1.05, 1.22]), but not among blacks (OR = 1.02, 95% CI [0.82, 1.28]). CONCLUSIONS: Our results suggest positive associations between LAN and BC incidence, especially among whites. The consistency of our findings with previous studies suggests that there could be fundamental biological links between exposure to artificial LAN and increased BC incidence, although additional research using exposure metrics at the individual level is required to confirm or refute these findings.
Address Department of Epidemiology and Biostatistics, College of Public Health, University of Georgia, Athens, GA, USA. secbauer@ufl.edu
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Language English Summary Language Original Title
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ISSN 1476-072X ISBN Medium
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Notes PMID:23594790; PMCID:PMC3651306 Approved no
Call Number LoNNe @ kagoburian @ Serial (down) 718
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Author Franke, S.; Brüning, A.; Hölker, F.; Kloas, W.
Title Study of biological action of light on fish Type Journal Article
Year 2013 Publication Journal of Light & Visual Environment Abbreviated Journal
Volume 37 Issue 4 Pages
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Notes Approved no
Call Number LoNNe @ kagoburian @ Serial (down) 698
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