vendredi 7 février 2014

Etude sur la WI-FI...

Une première étude sur le Wi-Fi démontre que l'exposition prénatale de rats résultent en retard de croissance et de puberté.

Source de l'étude en Anglais :


The aim of this study was to investigate the effects of a 2450 MHz
electromagnetic field (EMF) (wireless internet frequency) on the growth
and development
of female Wistar rats. The study was conducted on three groups of rats.
The prenatal and postnatal groups were exposed to EMF 1 h/day beginning
from intrauterine
and postnatal periods, respectively. The third group was the
sham-exposed group. Growth, nutrition and vaginal opening (VO) were
regularly monitored. Serum
and tissue specimens were collected at puberty. Histological
examinations, total antioxidant status (TAS), total oxidant status (TOS)
and oxidative stress
index (OSI) measurements in ovary and brain tissues and also
immunohistochemical staining of the hypothalamus were performed besides
the determination
of serum FSH, LH, E2 and IGF-1 values. Birth masses of the groups were
similar (p > 0.05). Mass gain per day was significantly lower and the
puberty was
significantly later in the prenatal group. Brain and ovary TOS and OSI
values in the prenatal group were significantly increased (p  although
serum FSH,
and E2 values did not differ among the groups (p > 0.05). Histological
examinations of the specimens revealed no statistically significant
difference between
the groups (p > 0.05). Exposure to 2450 MHz EMF, particularly in the
prenatal period, resulted in postnatal growth restriction and delayed
puberty in female
Wistar rats. Increased TOS and OSI values in the brain and ovary tissues
can be interpreted as a sign of chronic stress induced by EMF. This is
the first
longitudinal study which investigates the effects of EMF induced by
wireless internet on pubertal development beside growth.

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