Objective To observe the effect of Jiakang formula on thyroid hormone and thyroid pathological changes of experimental hyperthyroid rats. Methods Forty rats were given Euthyrox daily at 75 ?g/100 g ig and randomly divided into hyperthyroidism model group, control group, middle dose Jiakang formula group, high dose Jiakang formula group, each with 10 rats, as well as 10 rats as normal group. Three weeks later, the rats were killed for observing the effect of Jiakang formula on thyroid hormone and thyroid pathological changes of experimental hyperthyroid rats. Result Jiakang formula could lower the level of FT3, FT4, T3, T4 and promote the level of TSH, also improve thyroid pathological changes, especially in high dose Jiakang formula group. Conclusions Jiakang formula had the effect of improving the function and pathology of thyroid on experimental hyperthyroid rats.

Objective To observe the effect of hyperthyroidism decoction on thyroid hormone and thyroid pathological changes of ex-perimental hyperthyroid rats. Methods 40 rats were randomly divided into four groups: Normal group,hyperthyreosis model group, western drugs control group and hyperthyroidism decoction group. The model rats were constructed by drenching Youjiale. Hyperthyroidism decoction group were given hyperthyroidism decoction of respective dosage, western drugs control group were given propylthiouracil. The serum contents of T3, T4, FT3, FT4 and TSH were determined by radio-immunity method, the thyroid pathological changes effected by hyperthyroidism de-coction were observed. Results Compared with model group, the contents of serum T3, T4, FT3, FT4, of hyperthyroidism decoction group were decreased, while the contents of serum TSH were increased. Hyperthyroidism decoction may improve thyroid pathological changes of ex-perimental hyperthyroid rats. Conclusion Hyperthyroidism decoction can effectively improve the thyroid function of experimental hyperthy-roid rats.