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고온이 가토갑상선에 미치는 영향 Effect of High Ambient temperature on Thyroid Gland of Rabbits

대한수의학회지 1975년 15권 2호 p.251 ~ 257
이상곤, 임병무,
소속 상세정보
이상곤 (  ) 
전북대학교 농과대학 수의학과

임병무 (  ) 
전북대학교 농과대학 수의학과

Abstract


In order to investigate the effects of high ambient temperature on the thyroid, a total of 50 rabbits (mean weight, 1,294g) reared under 7℃ were alloted to two groups. Rabbits in one group served as controls and the others, after reared under 30℃ for 16 days, were returned to the normal temperature for 16 days.
The results obtained in this work were summerized as follows:
1. The weight of the thyroid gland was decreased severely from the 2nd day and increased to normal range on the 4th day after returned to normal temperature.
2. Thyroid follicles were atrophied significantly from the 1/2 day and then enlarged gradually from the 4th day, while their colloid substance also manifested poor staining, coagulation, and disappearence, being reappeared from the 8th day.
3. Hypertrophied follicular epithelial cells showed more enlarged size, degeneratien, necrosis, and mitosis from the 1/2 day in accordance with experimental term and those changes were diminished from the 8th day.
4. Histologically thyroid manifested-hypothyroidism on the 16th day but showed mild hyperthyroidism on the 2nd day and euthyroidism from the 4th day of returned roaring.

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