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Biomedical subjects

J Gyarmati

Publications and source records attributed to J Gyarmati.

At least 37 records · Page 2Linked to original sources

Effect of triiodothyronine treatment, thyroparathyroidectomy and mercaptoiminazole treatment on enchondral bone growth. Changes in the histological structure of the growth organ.

Histological changes caused by triiodothyronine (T3) and mercaptoiminazole treatment as well as by thyroidectomy have been studied in the proximal growth organ of the tibia of growing rats. On triiodothyronine treatment morphometric examinations revealed an increased proliferation and resorption of cartilage associated with a transitory acceleration of linear bone growth. Administration of mercaptoiminazole and thyroidectomy inhibited cartilage proliferation and resorption resulting in a slowing down of bone growth.

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Effect of triiodothyronine (T3) thyroparathyroidectomy and mercaptoimidazole treatment on enchondral bone growth. II. Growth dynamics in the proximal growth organ of the tibia in young rats.

The 24 hour growth rate of the tibial proximal growth organ was investigated in triiodothyronine or mercaptoimidazole-treated, and in thyroidectomized male rats. Longitudinal growth of the tibia of the same period was also studied. After one week treatment, the 24 hour rate of growth in the triiodothyronine-treated rats was retarded as compared with the controls, whereas at the end of the 3rd and 5th weeks the growth rate of the treated animals exceeded that of the controls. The tibia was somewhat longer in the treated rats than in the untreated controls, though the difference was not significant. The growth rate in the growth organ of mercaptoimidazole-treated and thyroidectomized animals was generally higher than that measured in the controls. The length of the tibia was less than in the controls, but the difference was not significant. The phenomenon is attributed to the altered hormonal conditions.

Animals↗