Rabbit s Triiodothyronine (T3), Thyroxin (T4) and the Thyroid Stimulating Hormone (TSH) time depending levels after exposure to laser irradiation and their correlation

Abstract

Safe doses of low-intensive visible, class (II) He-Ne laser of = 632.8 nm in a
dose response of (12-84) J/cm2 has been used for investigating laser effects on
thyroid gland function of rabbits.
Thyroid gland function was examined by monitoring and determining the
triiodothyronine (T3), thyroxin (T4) and the thyroid stimulating hormone TSH level
before (as controls) and after laser irradiation. The activity of Thyroid Glad for (T3)
and (T4) production increase directly with laser exposure duration while the rate of
TSH production decreases by the same rate.
The correlation of T3, T4 and the TSH hormones production during laser irradiation
also studied con-firing our data is the closely correlated that obtained for three
hormones investigated.