Daytime 50 Hz magnetic field exposure and plasma melatonin and urinary 6-sulfatoxymelatonin concentration profiles in humans
Concern about the health effects of extremely low frequency (ELF) magnetic fields (MF) has been raised by epidemiological studies indicating an association between certain cancers and living near power lines or working in high electric field environments. Alterations in pineal function have been pro...
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| Autor*in: |
Crasson, M. [verfasserIn] Beckers, V. [verfasserIn] Pequeux, Ch. [verfasserIn] |
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| Format: |
E-Artikel |
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| Erschienen: |
Copenhagen: Munksgaard International Publishers ; 2001 |
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| Schlagwörter: |
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| Umfang: |
Online-Ressource |
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| Reproduktion: |
2008 ; Blackwell Publishing Journal Backfiles 1879-2005 |
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| Übergeordnetes Werk: |
In: Journal of pineal research - Oxford [u.a.] : Wiley-Blackwell, 1984, 31(2001), 3, Seite 0 |
| Übergeordnetes Werk: |
volume:31 ; year:2001 ; number:3 ; pages:0 |
| Links: |
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| DOI / URN: |
10.1034/j.1600-079X.2001.310307.x |
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| 520 | |a Concern about the health effects of extremely low frequency (ELF) magnetic fields (MF) has been raised by epidemiological studies indicating an association between certain cancers and living near power lines or working in high electric field environments. Alterations in pineal function have been proposed as a mechanism through which power-frequency MFs may interact with living organisms. A double blind laboratory study was performed to evaluate daytime exposure effects of 100 μT root mean square (rms) 50 Hz MF. Three head exposure sessions of 30 min each were performed: sham, continuous, and intermittent (15 s on/off cycles) MFs were presented to each subject in early or late afternoon (13:30 or 16:30 hr). Twenty-one healthy male volunteers (20–27 yr old) participated in these 3-weekly experimental conditions. Blood samples were drawn for serum melatonin measurement, hourly at night (from 20:00 to 07:00 hr) under controlled environmental conditions. Urinary excretion of 6-sulfatoxymelatonin (aMT6s), the main melatonin metabolite, was measured for a 17 hr period, by means of urine samples taken at 19:00 hr (14:00–19:00 hr “afternoon period”), 23:00 hr (19:00–23:00 hr “evening period”), and 07:00 hr, day 2 (23:00–07:00 hr day 2 “night-time period”). There were no significant differences in either plasma melatonin or in aMT6s excretion profiles in the three experimental conditions. However, a tendency for a smaller increase of night-time urinary aMT6s after continuous MF exposure was found (P=0.08) particularly in men with the lower excretion rate of aMT6s (“Low Group”) (P=0.07). We conclude that this study does not indicate that daytime acute MF exposure influences either melatonin secretion or aMT6s excretion. Inter-individual differences in pineal production of melatonin, however, have to be taken into account in further studies. | ||
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10.1034/j.1600-079X.2001.310307.x doi (DE-627)NLEJ242994482 DE-627 ger DE-627 rakwb Crasson, M. verfasserin aut Daytime 50 Hz magnetic field exposure and plasma melatonin and urinary 6-sulfatoxymelatonin concentration profiles in humans Copenhagen Munksgaard International Publishers 2001 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Concern about the health effects of extremely low frequency (ELF) magnetic fields (MF) has been raised by epidemiological studies indicating an association between certain cancers and living near power lines or working in high electric field environments. Alterations in pineal function have been proposed as a mechanism through which power-frequency MFs may interact with living organisms. A double blind laboratory study was performed to evaluate daytime exposure effects of 100 μT root mean square (rms) 50 Hz MF. Three head exposure sessions of 30 min each were performed: sham, continuous, and intermittent (15 s on/off cycles) MFs were presented to each subject in early or late afternoon (13:30 or 16:30 hr). Twenty-one healthy male volunteers (20–27 yr old) participated in these 3-weekly experimental conditions. Blood samples were drawn for serum melatonin measurement, hourly at night (from 20:00 to 07:00 hr) under controlled environmental conditions. Urinary excretion of 6-sulfatoxymelatonin (aMT6s), the main melatonin metabolite, was measured for a 17 hr period, by means of urine samples taken at 19:00 hr (14:00–19:00 hr “afternoon period”), 23:00 hr (19:00–23:00 hr “evening period”), and 07:00 hr, day 2 (23:00–07:00 hr day 2 “night-time period”). There were no significant differences in either plasma melatonin or in aMT6s excretion profiles in the three experimental conditions. However, a tendency for a smaller increase of night-time urinary aMT6s after continuous MF exposure was found (P=0.08) particularly in men with the lower excretion rate of aMT6s (“Low Group”) (P=0.07). We conclude that this study does not indicate that daytime acute MF exposure influences either melatonin secretion or aMT6s excretion. Inter-individual differences in pineal production of melatonin, however, have to be taken into account in further studies. 2008 Blackwell Publishing Journal Backfiles 1879-2005 |2008|||||||||| ELF Beckers, V. verfasserin aut Pequeux, Ch. verfasserin aut Claustrat, B. oth Legros, J.J. oth In Journal of pineal research Oxford [u.a.] : Wiley-Blackwell, 1984 31(2001), 3, Seite 0 Online-Ressource (DE-627)NLEJ243926731 (DE-600)2027992-9 1600-079X nnns volume:31 year:2001 number:3 pages:0 http://dx.doi.org/10.1034/j.1600-079X.2001.310307.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 31 2001 3 0 |
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10.1034/j.1600-079X.2001.310307.x doi (DE-627)NLEJ242994482 DE-627 ger DE-627 rakwb Crasson, M. verfasserin aut Daytime 50 Hz magnetic field exposure and plasma melatonin and urinary 6-sulfatoxymelatonin concentration profiles in humans Copenhagen Munksgaard International Publishers 2001 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Concern about the health effects of extremely low frequency (ELF) magnetic fields (MF) has been raised by epidemiological studies indicating an association between certain cancers and living near power lines or working in high electric field environments. Alterations in pineal function have been proposed as a mechanism through which power-frequency MFs may interact with living organisms. A double blind laboratory study was performed to evaluate daytime exposure effects of 100 μT root mean square (rms) 50 Hz MF. Three head exposure sessions of 30 min each were performed: sham, continuous, and intermittent (15 s on/off cycles) MFs were presented to each subject in early or late afternoon (13:30 or 16:30 hr). Twenty-one healthy male volunteers (20–27 yr old) participated in these 3-weekly experimental conditions. Blood samples were drawn for serum melatonin measurement, hourly at night (from 20:00 to 07:00 hr) under controlled environmental conditions. Urinary excretion of 6-sulfatoxymelatonin (aMT6s), the main melatonin metabolite, was measured for a 17 hr period, by means of urine samples taken at 19:00 hr (14:00–19:00 hr “afternoon period”), 23:00 hr (19:00–23:00 hr “evening period”), and 07:00 hr, day 2 (23:00–07:00 hr day 2 “night-time period”). There were no significant differences in either plasma melatonin or in aMT6s excretion profiles in the three experimental conditions. However, a tendency for a smaller increase of night-time urinary aMT6s after continuous MF exposure was found (P=0.08) particularly in men with the lower excretion rate of aMT6s (“Low Group”) (P=0.07). We conclude that this study does not indicate that daytime acute MF exposure influences either melatonin secretion or aMT6s excretion. Inter-individual differences in pineal production of melatonin, however, have to be taken into account in further studies. 2008 Blackwell Publishing Journal Backfiles 1879-2005 |2008|||||||||| ELF Beckers, V. verfasserin aut Pequeux, Ch. verfasserin aut Claustrat, B. oth Legros, J.J. oth In Journal of pineal research Oxford [u.a.] : Wiley-Blackwell, 1984 31(2001), 3, Seite 0 Online-Ressource (DE-627)NLEJ243926731 (DE-600)2027992-9 1600-079X nnns volume:31 year:2001 number:3 pages:0 http://dx.doi.org/10.1034/j.1600-079X.2001.310307.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 31 2001 3 0 |
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10.1034/j.1600-079X.2001.310307.x doi (DE-627)NLEJ242994482 DE-627 ger DE-627 rakwb Crasson, M. verfasserin aut Daytime 50 Hz magnetic field exposure and plasma melatonin and urinary 6-sulfatoxymelatonin concentration profiles in humans Copenhagen Munksgaard International Publishers 2001 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Concern about the health effects of extremely low frequency (ELF) magnetic fields (MF) has been raised by epidemiological studies indicating an association between certain cancers and living near power lines or working in high electric field environments. Alterations in pineal function have been proposed as a mechanism through which power-frequency MFs may interact with living organisms. A double blind laboratory study was performed to evaluate daytime exposure effects of 100 μT root mean square (rms) 50 Hz MF. Three head exposure sessions of 30 min each were performed: sham, continuous, and intermittent (15 s on/off cycles) MFs were presented to each subject in early or late afternoon (13:30 or 16:30 hr). Twenty-one healthy male volunteers (20–27 yr old) participated in these 3-weekly experimental conditions. Blood samples were drawn for serum melatonin measurement, hourly at night (from 20:00 to 07:00 hr) under controlled environmental conditions. Urinary excretion of 6-sulfatoxymelatonin (aMT6s), the main melatonin metabolite, was measured for a 17 hr period, by means of urine samples taken at 19:00 hr (14:00–19:00 hr “afternoon period”), 23:00 hr (19:00–23:00 hr “evening period”), and 07:00 hr, day 2 (23:00–07:00 hr day 2 “night-time period”). There were no significant differences in either plasma melatonin or in aMT6s excretion profiles in the three experimental conditions. However, a tendency for a smaller increase of night-time urinary aMT6s after continuous MF exposure was found (P=0.08) particularly in men with the lower excretion rate of aMT6s (“Low Group”) (P=0.07). We conclude that this study does not indicate that daytime acute MF exposure influences either melatonin secretion or aMT6s excretion. Inter-individual differences in pineal production of melatonin, however, have to be taken into account in further studies. 2008 Blackwell Publishing Journal Backfiles 1879-2005 |2008|||||||||| ELF Beckers, V. verfasserin aut Pequeux, Ch. verfasserin aut Claustrat, B. oth Legros, J.J. oth In Journal of pineal research Oxford [u.a.] : Wiley-Blackwell, 1984 31(2001), 3, Seite 0 Online-Ressource (DE-627)NLEJ243926731 (DE-600)2027992-9 1600-079X nnns volume:31 year:2001 number:3 pages:0 http://dx.doi.org/10.1034/j.1600-079X.2001.310307.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 31 2001 3 0 |
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10.1034/j.1600-079X.2001.310307.x doi (DE-627)NLEJ242994482 DE-627 ger DE-627 rakwb Crasson, M. verfasserin aut Daytime 50 Hz magnetic field exposure and plasma melatonin and urinary 6-sulfatoxymelatonin concentration profiles in humans Copenhagen Munksgaard International Publishers 2001 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Concern about the health effects of extremely low frequency (ELF) magnetic fields (MF) has been raised by epidemiological studies indicating an association between certain cancers and living near power lines or working in high electric field environments. Alterations in pineal function have been proposed as a mechanism through which power-frequency MFs may interact with living organisms. A double blind laboratory study was performed to evaluate daytime exposure effects of 100 μT root mean square (rms) 50 Hz MF. Three head exposure sessions of 30 min each were performed: sham, continuous, and intermittent (15 s on/off cycles) MFs were presented to each subject in early or late afternoon (13:30 or 16:30 hr). Twenty-one healthy male volunteers (20–27 yr old) participated in these 3-weekly experimental conditions. Blood samples were drawn for serum melatonin measurement, hourly at night (from 20:00 to 07:00 hr) under controlled environmental conditions. Urinary excretion of 6-sulfatoxymelatonin (aMT6s), the main melatonin metabolite, was measured for a 17 hr period, by means of urine samples taken at 19:00 hr (14:00–19:00 hr “afternoon period”), 23:00 hr (19:00–23:00 hr “evening period”), and 07:00 hr, day 2 (23:00–07:00 hr day 2 “night-time period”). There were no significant differences in either plasma melatonin or in aMT6s excretion profiles in the three experimental conditions. However, a tendency for a smaller increase of night-time urinary aMT6s after continuous MF exposure was found (P=0.08) particularly in men with the lower excretion rate of aMT6s (“Low Group”) (P=0.07). We conclude that this study does not indicate that daytime acute MF exposure influences either melatonin secretion or aMT6s excretion. Inter-individual differences in pineal production of melatonin, however, have to be taken into account in further studies. 2008 Blackwell Publishing Journal Backfiles 1879-2005 |2008|||||||||| ELF Beckers, V. verfasserin aut Pequeux, Ch. verfasserin aut Claustrat, B. oth Legros, J.J. oth In Journal of pineal research Oxford [u.a.] : Wiley-Blackwell, 1984 31(2001), 3, Seite 0 Online-Ressource (DE-627)NLEJ243926731 (DE-600)2027992-9 1600-079X nnns volume:31 year:2001 number:3 pages:0 http://dx.doi.org/10.1034/j.1600-079X.2001.310307.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 31 2001 3 0 |
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10.1034/j.1600-079X.2001.310307.x doi (DE-627)NLEJ242994482 DE-627 ger DE-627 rakwb Crasson, M. verfasserin aut Daytime 50 Hz magnetic field exposure and plasma melatonin and urinary 6-sulfatoxymelatonin concentration profiles in humans Copenhagen Munksgaard International Publishers 2001 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Concern about the health effects of extremely low frequency (ELF) magnetic fields (MF) has been raised by epidemiological studies indicating an association between certain cancers and living near power lines or working in high electric field environments. Alterations in pineal function have been proposed as a mechanism through which power-frequency MFs may interact with living organisms. A double blind laboratory study was performed to evaluate daytime exposure effects of 100 μT root mean square (rms) 50 Hz MF. Three head exposure sessions of 30 min each were performed: sham, continuous, and intermittent (15 s on/off cycles) MFs were presented to each subject in early or late afternoon (13:30 or 16:30 hr). Twenty-one healthy male volunteers (20–27 yr old) participated in these 3-weekly experimental conditions. Blood samples were drawn for serum melatonin measurement, hourly at night (from 20:00 to 07:00 hr) under controlled environmental conditions. Urinary excretion of 6-sulfatoxymelatonin (aMT6s), the main melatonin metabolite, was measured for a 17 hr period, by means of urine samples taken at 19:00 hr (14:00–19:00 hr “afternoon period”), 23:00 hr (19:00–23:00 hr “evening period”), and 07:00 hr, day 2 (23:00–07:00 hr day 2 “night-time period”). There were no significant differences in either plasma melatonin or in aMT6s excretion profiles in the three experimental conditions. However, a tendency for a smaller increase of night-time urinary aMT6s after continuous MF exposure was found (P=0.08) particularly in men with the lower excretion rate of aMT6s (“Low Group”) (P=0.07). We conclude that this study does not indicate that daytime acute MF exposure influences either melatonin secretion or aMT6s excretion. Inter-individual differences in pineal production of melatonin, however, have to be taken into account in further studies. 2008 Blackwell Publishing Journal Backfiles 1879-2005 |2008|||||||||| ELF Beckers, V. verfasserin aut Pequeux, Ch. verfasserin aut Claustrat, B. oth Legros, J.J. oth In Journal of pineal research Oxford [u.a.] : Wiley-Blackwell, 1984 31(2001), 3, Seite 0 Online-Ressource (DE-627)NLEJ243926731 (DE-600)2027992-9 1600-079X nnns volume:31 year:2001 number:3 pages:0 http://dx.doi.org/10.1034/j.1600-079X.2001.310307.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 31 2001 3 0 |
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Daytime 50 Hz magnetic field exposure and plasma melatonin and urinary 6-sulfatoxymelatonin concentration profiles in humans |
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Daytime 50 Hz magnetic field exposure and plasma melatonin and urinary 6-sulfatoxymelatonin concentration profiles in humans |
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Crasson, M. |
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Journal of pineal research |
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2001 |
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Crasson, M. Beckers, V. Pequeux, Ch. |
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31 |
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Elektronische Aufsätze |
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Crasson, M. |
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10.1034/j.1600-079X.2001.310307.x |
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verfasserin |
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daytime 50 hz magnetic field exposure and plasma melatonin and urinary 6-sulfatoxymelatonin concentration profiles in humans |
| title_auth |
Daytime 50 Hz magnetic field exposure and plasma melatonin and urinary 6-sulfatoxymelatonin concentration profiles in humans |
| abstract |
Concern about the health effects of extremely low frequency (ELF) magnetic fields (MF) has been raised by epidemiological studies indicating an association between certain cancers and living near power lines or working in high electric field environments. Alterations in pineal function have been proposed as a mechanism through which power-frequency MFs may interact with living organisms. A double blind laboratory study was performed to evaluate daytime exposure effects of 100 μT root mean square (rms) 50 Hz MF. Three head exposure sessions of 30 min each were performed: sham, continuous, and intermittent (15 s on/off cycles) MFs were presented to each subject in early or late afternoon (13:30 or 16:30 hr). Twenty-one healthy male volunteers (20–27 yr old) participated in these 3-weekly experimental conditions. Blood samples were drawn for serum melatonin measurement, hourly at night (from 20:00 to 07:00 hr) under controlled environmental conditions. Urinary excretion of 6-sulfatoxymelatonin (aMT6s), the main melatonin metabolite, was measured for a 17 hr period, by means of urine samples taken at 19:00 hr (14:00–19:00 hr “afternoon period”), 23:00 hr (19:00–23:00 hr “evening period”), and 07:00 hr, day 2 (23:00–07:00 hr day 2 “night-time period”). There were no significant differences in either plasma melatonin or in aMT6s excretion profiles in the three experimental conditions. However, a tendency for a smaller increase of night-time urinary aMT6s after continuous MF exposure was found (P=0.08) particularly in men with the lower excretion rate of aMT6s (“Low Group”) (P=0.07). We conclude that this study does not indicate that daytime acute MF exposure influences either melatonin secretion or aMT6s excretion. Inter-individual differences in pineal production of melatonin, however, have to be taken into account in further studies. |
| abstractGer |
Concern about the health effects of extremely low frequency (ELF) magnetic fields (MF) has been raised by epidemiological studies indicating an association between certain cancers and living near power lines or working in high electric field environments. Alterations in pineal function have been proposed as a mechanism through which power-frequency MFs may interact with living organisms. A double blind laboratory study was performed to evaluate daytime exposure effects of 100 μT root mean square (rms) 50 Hz MF. Three head exposure sessions of 30 min each were performed: sham, continuous, and intermittent (15 s on/off cycles) MFs were presented to each subject in early or late afternoon (13:30 or 16:30 hr). Twenty-one healthy male volunteers (20–27 yr old) participated in these 3-weekly experimental conditions. Blood samples were drawn for serum melatonin measurement, hourly at night (from 20:00 to 07:00 hr) under controlled environmental conditions. Urinary excretion of 6-sulfatoxymelatonin (aMT6s), the main melatonin metabolite, was measured for a 17 hr period, by means of urine samples taken at 19:00 hr (14:00–19:00 hr “afternoon period”), 23:00 hr (19:00–23:00 hr “evening period”), and 07:00 hr, day 2 (23:00–07:00 hr day 2 “night-time period”). There were no significant differences in either plasma melatonin or in aMT6s excretion profiles in the three experimental conditions. However, a tendency for a smaller increase of night-time urinary aMT6s after continuous MF exposure was found (P=0.08) particularly in men with the lower excretion rate of aMT6s (“Low Group”) (P=0.07). We conclude that this study does not indicate that daytime acute MF exposure influences either melatonin secretion or aMT6s excretion. Inter-individual differences in pineal production of melatonin, however, have to be taken into account in further studies. |
| abstract_unstemmed |
Concern about the health effects of extremely low frequency (ELF) magnetic fields (MF) has been raised by epidemiological studies indicating an association between certain cancers and living near power lines or working in high electric field environments. Alterations in pineal function have been proposed as a mechanism through which power-frequency MFs may interact with living organisms. A double blind laboratory study was performed to evaluate daytime exposure effects of 100 μT root mean square (rms) 50 Hz MF. Three head exposure sessions of 30 min each were performed: sham, continuous, and intermittent (15 s on/off cycles) MFs were presented to each subject in early or late afternoon (13:30 or 16:30 hr). Twenty-one healthy male volunteers (20–27 yr old) participated in these 3-weekly experimental conditions. Blood samples were drawn for serum melatonin measurement, hourly at night (from 20:00 to 07:00 hr) under controlled environmental conditions. Urinary excretion of 6-sulfatoxymelatonin (aMT6s), the main melatonin metabolite, was measured for a 17 hr period, by means of urine samples taken at 19:00 hr (14:00–19:00 hr “afternoon period”), 23:00 hr (19:00–23:00 hr “evening period”), and 07:00 hr, day 2 (23:00–07:00 hr day 2 “night-time period”). There were no significant differences in either plasma melatonin or in aMT6s excretion profiles in the three experimental conditions. However, a tendency for a smaller increase of night-time urinary aMT6s after continuous MF exposure was found (P=0.08) particularly in men with the lower excretion rate of aMT6s (“Low Group”) (P=0.07). We conclude that this study does not indicate that daytime acute MF exposure influences either melatonin secretion or aMT6s excretion. Inter-individual differences in pineal production of melatonin, however, have to be taken into account in further studies. |
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Daytime 50 Hz magnetic field exposure and plasma melatonin and urinary 6-sulfatoxymelatonin concentration profiles in humans |
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http://dx.doi.org/10.1034/j.1600-079X.2001.310307.x |
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Beckers, V. Pequeux, Ch Claustrat, B. Legros, J.J. |
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