ORIGINAL RESEARCH

The study of morphological and functional changes in the thyroid follicles of healthy rats and rats with experimentally induced hypothyroidism following exposure to medium-power laser radiation

About authors

1 Multi-specialty Center of Laser Medicine, Chelyabinsk

2 South Ural State Medical University, Chelyabinsk

Correspondence should be addressed: Irina V. Smelova
Potemkina 14, kv. 65, Chelyabinsk, 454081; ur.liam@vis.larips

Received: 2018-02-15 Accepted: 2018-03-20 Published online: 2018-07-28
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Fig. 1. The intact thyroid gland. Staining: hematoxylin-eosin; 400x magnification
Fig. 2. Hypothyroidism. Staining: hematoxylin-eosin; 400x magnification
Fig. 3. The thyroid of experimental animals on day 7 after irradiation with 112 J/cm2 laser beams. Staining: hematoxylin-eosin; 400x magnification
Fig. 4. The thyroid of experimental animals on day 7 after irradiation with 450 J/cm2 laser beams. Staining: hematoxylin-eosin; 400x magnification
Table 1. Comparative analysis of the epithelium height, diameter and area of follicles in the experimental groups of animals
Note: 1р < 0.05, intact controls compared with animals with untreated induced hypothyroidism; #р < 0.05, irradiated animals compared with intact controls; *р < 0.05, irradiated animals compared with animals with untreated induced hypothyroidism; 0p < 0.05, comparison between the groups of irradiated animals.
Table 2. Comparative analysis of the nucleus/cell ratio and Braun’s index in the experimental groups of animals
Note: 1р < 0.05, intact controls compared with animals with untreated induced hypothyroidism; #р < 0.05, irradiated animals compared with intact controls; *р < 0.05, irradiated animals compared with animals with untreated induced hypothyroidism; 0р < 0.05, comparison between the groups of irradiated animals.