• Department of Thyroid Surgery, Affiliated Hospital of Guiyang Medicai College, Guiyang 550004, Guizhou Province, China;
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Objective  To investigate the function and survival of parathyroid tissue transplanted into the rectus of rat by different pre-treatment.
Methods  Male,adult Wistar rats (seventy)as donors and adult SD rats (thirty-five)as receptors. Model rats were established by resection of parathyroid and randomly divided into five groups (digital random method):direct transplantation group, high-oxygen culture group, ciclosporin A (CsA) group, 60Co irradiated group, and integrated treatment group. Each receptor received four PTG from two donors and the PTG were transplanted into the rectus of the receptors. Changes in concentration of serum calcium and PTH at different time points before and after parathyroid transplantation in each group recipient rats were observed.
Results  Serum calcium and PTH could reach or remain normal level after thyroid tissue transplantation in all groups in 1 week after operation, which significantly differed from those of pre-transplanted (P<0.01). The survival time among the five groups were different: the duration for keeping serum calcium and PTH at normal level(only 3 week and 4 weeks)in direct transplantation group was shortest than that in high-oxygen culture group (5 weeks and 8 weeks), CsA group (6 weeks and 8 weeks), 60Co irradiated group (5 weeks and 7 weeks), and integrated treatment group (5 weeks and 9 weeks). Compared with direct transplantation group, the levels of serum calcium and PTH in high-oxygen culture group,CsA group,60Co irradiated group, and integrated treatment group were significantly higher in 4-9 weeks point (P<0.05, except high-oxygen culture group in 9 weeks and 60Co irradiated group in 8 weeks after operation had no significant difference). Compared with integrated treatment group, the levels of serum calcium and PTH in high-oxygen culture group,CsA group, and 60Co irradiated group were significantly lower in 7-9 weeks point (P<0.05). 
Conclusions  PTG tissues transplanted in rectus can maintain serum calcium level at normal range,and measurement on graft or receptors can prolong the survival period of parathyroid graft. Tissue transplantation of parathyroid after culture may provide a potent way to cure hypothyroidism.

Citation: GAO Qingjun,ZHAO Daiwei,WANG Nanpeng,ZHOU Yan,DUAN Haisong,GAO Rongjun. Experimental Study of Allograft Parathyroid Tissues Transplantation to Treat Hypoparathroidism. CHINESE JOURNAL OF BASES AND CLINICS IN GENERAL SURGERY, 2012, 19(10): 1079-1084. doi: Copy