The Effect of Bright Light on Physiological Circadian Rhythms and Subjective Alertness of Shift Work Nurses in Iran

• Autorzy: Kakooei H. , Ardakani Z. Z. , Ayattollahi M. T. , Karimian M. , Saraji G. B. , Owji A. A.
• Języki publikacji: EN

Abstrakty

EN

In this study, the effects of bright light (BL) on the rhythms in body temperature, plasma melatonin, plasma cortisol and subjective alertness, in 34 shift work nurses at a university hospital were assessed. They were exposed to very BL (4 500 lx) during 2 breaks (21:15–22:00 and 3:15–4:00) or dim light (300 lx). The subjects were studied under 24 h of realistic conditions during which their plasma cortisol and melatonin were measured at 3-h intervals; their body temperature was also measured during and after night shift work. Subjective alertness was evaluated with the Karolinska sleepiness scale. Administration of BL significantly suppressed night-time melatonin levels. A one-way ANOVA revealed that BL tended to increase cortisol levels and body temperature and significantly improved alertness. These results demonstrate that photic stimulation in a hospital setting can have a powerful influence on the adjustment of the circadian system.

Słowa kluczowe

EN

circadian rhythms; shift work; nurse; bright light; alertness; melatonin; cortisol; body temperature

• Wydawca: Taylor & Francis
• Czasopismo: International Journal of Occupational Safety and Ergonomics
• Rocznik: 2010
• Tom: Vol. 16, No. 4
• Strony: 477--485
• Opis fizyczny: Bibliogr. 42 poz., tab., wykr.

Twórcy

autor

Kakooei H.

• School of Public Health, Tehran University of Medical Sciences, Tehran, Iran

autor

Ardakani Z. Z.

• School of Public Health, Shiraz University of Medical Sciences, Shiraz, Iran

autor

Ayattollahi M. T.

• School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran

autor

Karimian M.

• School of Medicine, Tehran University of Medical Sciences, Tehran, Iran

autor

Saraji G. B.

• School of Public Health, Tehran University of Medical Sciences, Tehran, Iran

autor

Owji A. A.

• School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran

Bibliografia

• 1.Akersttedt T. Psychological and psychophysiological effects of shift work. Scand J Work Environ Health. 1990;16:67–73.
• 2.Zamanian Ardakani Z, Kakooei H, Ayattollahi SMT, Choobineh A, Nasle Seraji G. Prevalence of mental disorders among shift work hospital nurses in Shiraz, Iran. Pak J Biol Sci. 2008;11(12):1605–9.
• 3.Koller M. Health risks related to shift work. Int Arch Occup Environ Health. 1983;53:59–75.
• 4.Akerstedt T. Sleepiness as a consequence of shift work. Sleep. 1988;11:17–34.
• 5.Jewett E, Kronauer RE, Czeisler CA. Light-induced suppression of endogenous circadian amplitude in humans. Nature. 1991;350:59–62.
• 6.Akerestedt T, Gillberg M, Wetterberg L. The circadian covariation of fatigue and urinary melatonin. Biol. Psychiatry. 1982;17:547–54.
• 7.Hennig J, Kiefrdore P, Moritz C, Huwe S, Netter P. Changes in cortisol secretion during shiftwork: implications for tolerance to shiftwork? Ergonomics.1998;41: 610–21.
• 8.Knauth P, Emade E, Rutenfranz J, Kiesswetter E, Smit P. Reentrainment of body temperature in field studies of shift work. Int Arch Occup Environ Health. 1981;49:137–49.
• 9.Illnerova H, Vanecek J. Response of rat pineal serotonin N-acetyltransferase to one min light pulse at different night times. Brain Res. 1979;167:431–4.
• 10.Brainard GC, Lewy AJ, Menaker M, Fredrickson R, Miller L, Weleber R, Cassone V, Hudson D. Effect of light wavelength on the suppression of nocturnal plasma melatonin in normal volunteers. Ann NY Acad Sci. 1985;453:376–8.
• 11.Wetterberg L. Lighting: nonvisual effects. Scand J Work Environ Health. 1990;16:26–8.
• 12.Lewy AJ, Wehr TA, Newsme DA, Markey SP. Light suppresser melatonin secretion in humans. Science. 1980;210:1267–9.
• 13.Czeisler CA, Richardson GS, Zimmerman JC, Moore MC, Weitzman ED. Entrainment of human circadian rhythms by light-dark cycles: a reassessment. Photochem Photobiol. 1981;34:239–47.
• 14.Wever R, Polasek J, Wildgruber C. Bright light affects human circadian rhythms. Pflugers Arch. 1983;396:85–7.
• 15.Lewy AJ, Sack RL, Miller LS, Hoban TM. Antidepressant and circadian phase-shifting effects of light. Science. 1987;235:352–4.
• 16.Blehar MC, Rosenthal NE. Seasonal affective disorders and phototherapy. Arch Gen Psychiatry. 1989;46:469–74.
• 17.Czeisler CA, Allan JS. Acute circadian phase reversal in man via bright light exposure: application to jet-lag. Sleep Res. 1987;16:605.
• 18.Rosenthal NE, Joseph-Vanderpool JR, Levendosky AA, Johnston SH, Allen R, Kelly KA, et al. Phase-shifting effects of bright morning light as treatment for delayed sleep phase syndrome. Sleep. 1990;13:354–61.
• 19.Lewy AJ, Sack RL. Light therapy and psychiatry. Proc Soc Exp Bio Med. 1986;183:8–11.
• 20.Eastman CI. Circadian rhythms and bright light: recommendations for shift work. Work Stress. 1990;4:245–60.
• 21.Eastman CI, Miescke KJ. Entrainment of circadian rhythms with 26-h bright light and sleep–wake schedules. Am J Physil. 1990;259:R1189–97.
• 22.Gallo LC, Eastman CI. Circadian rhythms during gradually delaying and advancing sleep and light schedule. Physiol Behav. 1993;53:119–26.
• 23.Eastman CI, Liu L, Fogg LF. Circadian rhythm adaptation to simulated night shift work: effect of nocturnal bright-light duration. Sleep. 1995;18:399–407.
• 24.Czeisler CA, Johnson MP, Duffy JF, Brown EN, Ronda JM, Kronauer RE. Exposure to bright light and darkness to treat physiologic maladaptation to night work. N Engl J Med. 1990;322:1253–9.
• 25.Costa G, Ghirlanda G, Minors DS, Waterhouse JM. Effect of bright light on tolerance to night work. Scan J Work Environ Health. 1993;19:414–20.
• 26.Watanabe M, Akamatsu Y, Furui H, Tomita T, Watanabe T, Kobayashi F. Effects of changing shift scheduales from a full-day to a half-day shift before a night shift on physical activities and sleep patterns of single nurses and married nurses with children. Ind Health. 2004;42:34–40.
• 27.Kobayashi F, Furui H, Akamatsu Y, Watanabe T, Horibe H. Changes in psychophysiological functions during night shift in nurses. Int Arch Occup Environ Health. 2004;69:83–90.
• 28.Burgess HJ, Sharkey KM, Eastman CI. Bright light dark and melatonin can promote circadian adaptation in night shift workers. Sleep Med Rev. 2002;6:407–20.
• 29.Costa G, Gaffuri E, Ghirlanda G, Minors DS, Waterhouse JM. Psychophysiological conditions and hormonal secreation in nurses on a rapidly rotating shift schedule and exposed to bright light during night work. Work Stress. 1995;9:148–57.
• 30.Asano Y. Phototherapy and psychiatry. Japanese Journal of Psychiatric Treatment. 1990;5:323–32.
• 31.Monk TH, Buysse DJ, Reynolds CF 3rd, Berga SL, Jarrett DB, Begley AE, et al. Circadian rhythms in human performance and mood under constant conditions. Sleep Res.1997;6:9–18.
• 32.Akerstedt T, Hume K, Minors D, Waterhouse J. The subjective meaning of good sleep—an intraindividual approach using the Karolinska sleep diary. Percep Mot Skills. 1994;79:287–96.
• 33.Barnes RG, Deacon SJ, Forbes MJ, Arendt J. Adaptation of the 6-sulphatoxymelatonin rhythms in shift workers on offshore installation during a 2-week 12-h night shift. Neurosci Let. 1998;241:9–12.
• 34.Born J, Hansen K, Marshall L, Molle M, Fehm HL. Timing the end of nocturnal sleep. Nature. 1999;397:29–30.
• 35.Kudielka BM, Buchtal J, Uhde A, Wust S. Circadian cortisol profiles and psychological self-reports in shift workers with and without recent change in the shift rotation. Biol Psychol. 2006;74:92–103.
• 36.Czeisler CA, Kleman EB. Circadian and sleep-dependent regulation of hormone release in humans. Recent prog in hormone research. 1999;54:97–130.
• 37.Cagnacci A, Elliott JA, Yen SSC. Melatonin: a major regulator of the circadian rhythm of core temperature in humans. J Clin Endocrinol Metab. 1992;75:447–52.
• 38.Deacon S, Arendt J. Melatonin-induced temperature suppression and its acute phase-shifting effects correlate in dosedependent manner in humans. Brain Res. 1995;688:77–85.
• 39.Krauchi K, Cajochen C, Werth E, Wirz-Justice A. Functional link between distal vasodilation and sleep-onset latency. Am J Physiol Regul Integr Comp Physiol. 2000;278:741–8.
• 40.Fort A, Harrison MT, Mills JN. Psychometric performance: circadian rhythms and effect of raising body temperature. J Physiol. 1973;231:114–5.
• 41.Lowden A, Akerstedt T, Wibom R. Suppression of sleepiness and melatonin by bright light exposure during breaks in night work. J Sleep Res. 2004;13:37–43.
• 42.Cajochen C, Zeitzer JM, Czeisler CA, Dijk DJ. Dose–response relationship for light intensity and ocular and electroencephalographic correlates of human alertness. Behav Brain Res. 2000; 115:75–83.