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  • Title: Effect of maternal thyroparathyroidectomy before gestation on fetal development in rats.
    Author: Baksi SN.
    Journal: Endokrinologie; 1979; 73(3):264-72. PubMed ID: 499094.
    Abstract:
    Female rats were thyroparathyroidectomized (TPTX) at 24 (immature), 40 (pubertal) and 75 (matured) days of age, at least 21 days before mating. Thyroxine (2.5 microgram/kg) or parathyroid hormone (150 USP units/kg x 2) was replaced in two TPTX groups. Thyroxine deficient groups of all ages had reduced body weight, litter size and serum thyroxine and calcium level. Fetal weights at 20 days of gestation in all thyroxine deficient groups were significantly reduced but placental weight was generally increased. Maternal serum thyroxine and fetal weight was positively related when all groups were taken together, but maternal serum calcium and fetal weight was not related. There were no significant differences in gross, visceral or skeletal anomalies in the fetuses in any group.
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