Korean Journal of Veterinary Research 1989;29(3):223-229.
Studies on reappearance of thymus after orchidectomy in ageing rats
Myoung-heon Lee1, Woo-young Jo2, Sang-keun Kim1
1Department of Veterinary Medicine, College of Agriculture, Chungnam National University
2Chungbuk Animal Health Laboratory
성숙(成熟) rat에 있어서 고환적출후(睾丸摘出後) 흉선(胸線)의 재출현(再出現)에 관한 연구(硏究)
이명헌1, 조우영2, 김상근1
1충남대학교 농과대학 수의학과
2충북 가축위생시험소
Abstract
These studies were carried out to investigate the changes of blood pictures, hitological findings and testosterone concentrations after orchidectomy in ageing rat. The results obtained were summarized as follows: 1. The total W.B.C. counts were $9.27{pm}12{ imes}10^3/mm^3$ in the control group, $9.54{pm}34{ imes}10^3/mm^3$ in the sham-operation group and $12.08{pm}28{ imes}10^3/mm^3$ in the orchidectomy group when it was checked 50days after the operation. 2. The number of lymphocytes after orchidectomy began to increase gradually as time passes, thereafter markedly increased $10.12{pm}03{ imes}10^3/mm^3$ at 50days after orchidectomy. 3. The concentration of testosterone in serum began to decrease gradually after orchidectomy showed lowest level $1.68{pm}0.61pg/ml$ at 50days after orchidectomy while it was $5.82{pm}0.39pg/ml$ in control group. 4. The histological findings of thymus after orchidectomy were marked increase of thymic lymphocyte, disapearance of fat cells and appearance of mitotic figures.
Key Words: thymus, reapperance, orchidectomy, rat


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