TY - JOUR T1 - Rotating night shift work and polymorphism of genes important for the regulation of circadian rhythm JO - Scandinavian Journal of Work, Environment & Health PY - 2013/3VL - 39 IS - 2 SP - 178 EP - 186 AU - Reszka, Edyta AU - Peplonska, Beata AU - Wieczorek, Edyta AU - Sobala, Wojciech AU - Bukowska, Agnieszka AU - GromadziƄska, Jolanta AU - Lie, Jenny-Anne AU - Kjuus, Helge AU - Wasowicz, Wojciech M3 - doi: 10.5271/sjweh.3299 UR - https://www.sjweh.fi/show_abstract.php?abstract_id=3299 KW - cancer KW - chronotype KW - circadian rhythm KW - gene KW - night shift work KW - night work KW - nurse KW - polymorphism KW - rotating shift KW - shift work KW - shift worker KW - sleep N2 - '

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OBJECTIVE ': 'People living in industrialized societies have developed specific working schedules during the day and at night, including permanent night shifts and rotating night shifts. The aim of this study was to examine the association between circadian polymorphisms and rotating night shift work.

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METHODS ': 'This cross-sectional study comprised 709 nurses and midwives (348 current rotating and 361 current day workers). Genetic polymorphism of selected clock genes BMAL1 (rs2279287), CLOCK (rs1801260), PER1 (rs2735611), PER2 (rs2304672), PER3 (rs10462020), CRY1 (rs8192440), CRY2 (rs10838527, rs10838527) was determined using real-time polymerase chain reaction (PCR) assays.

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RESULTS ': 'There were no differences in BMAL1, CLOCK, CRY2, PER1, PER2, and PER3 genotypes among nurses and midwives working rotating night and day shifts. The frequency of women with rare CRY1 TT genotype was higher in the group of rotating night shift than day workers (17.0% versus 13.9%, P=0.06). Moreover, CRY1 TT genotype was associated with the total rotating shift-work duration, compared to women rarely working night shifts.

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CONCLUSIONS ': 'These results suggest that CRY1 (rs8192440) polymorphism may influence the adaptation to the rotating night shift work among nurses and midwives.

SN - 0355-3140 ER -