¿Qué es AVAATE? | Contacto | RSS 2.0 | Mapa del sitio | | | Buscar

Asociación Vallisoletana de Afectad@s por las Antenas de Telecomunicaciones - AVAATE

Portada del sitio > Documentos > Estudios Científicos > Variations of Melatonin and Stress Hormones under Extended Shifts and (...)

Variations of Melatonin and Stress Hormones under Extended Shifts and Radiofrequency Electromagnetic Radiation

Sábado 19 de noviembre de 2005 · 1966 lecturas



Variations of Melatonin and Stress Hormones under Extended Shifts and Radiofrequency Electromagnetic Radiation
Katia Koicheva Vangelova1 and Mishel Salvador Israel2
1Department of Physiology, Psychology and Ergonomics and 2Department of Physical Factors, National Center of Public Health Protection, Sofia, Bulgaria
ABSTRACT
We studied the time-of-day variations in urinary levels of 6-sulphatoxy-melatonin and three stress hormones in operators working fast- rotating extended shifts under radiofrequency electromagnetic radiation (EMR). The excretion rate of the hormones was monitored by radioimmunoassay and spectrofluorimetry at 4-hour intervals in a group of 36 male operators comprising 12 broadcasting station operators, 12 TV station operators, and a control group of 12 satellite station operators. Measuring the time-weighted average (TWA) of EMR exposure revealed a high-level of exposure in broad-casting station operators (TWAmean = 3.10 W/ cm2, TWAmax = 137.00 W/cm2), a low-level in TV station operators (TWAmean = 1.89 W/cm2, TWAmax=5.24 W/cm2), and a very low level in satellite station operators. The differences among the groups remained the same after confounding factors were taken into account. Radiofrequency EMR had no effect on the typical diurnal pattern of 6-sulphatoxymelatonin. High-level radiofrequency EMR exposure significantly increased the excretion rates of cortisol (p<0.001), adrenaline (p=0.028), and noradrenaline (p<0.000), whereas changes under...

Si quieres hacernos un comentario, por favor escribe un CORREO a avaate@avaate.org o utiliza el FORMULARIO DE CONTACTO. Muchas gracias.


Apoyo económico