Effects of Zinc Supplementation in Neonatal Hypothyroidism and Cerebellar Distortion Induced by Maternal Carbimazole


  • A. A. El Ghareeb Zoology Department, Faculty of science, Cairo University, Cairo
  • A. M. El-Bakry Zoology Department, Faculty of science, Cairo University, Cairo
  • R. G. Ahmad Zoology Department, Faculty of Science, Beni-Suef University, Egypt
  • Asmaa Gaber Zoology Department, Faculty of Science, Beni-Suef University, Egypt


The aim of this study is to investigate the protective role of Zn on thyroid function and cerebellum impairments induced by carbimazole (CMI) in neonats at PND 28. Animals were divided into four groups: group I acts as control; group II received carbimazole (1.35mg/kg.b.w CMI) only; group III received Zn as zinc sulphate (3mg/kg.b.w) and group IV received Zn and CMI. The administration of maternal CMI caused significant decrease in serum T4, T3 and growth hormone (GH) levels and significant increase in serum TSH levels in both dams and their newborns relative to control group. While in Zinc-hypothyroid group, a reverse pattern was noticed for all previous parameters comparing with hypothyroid group. Maternal CMI administration caused significant decrease in GSH, SOD, GPX, CAT and t-SH of cerebellum and increased prooxidant levels including MDA, H2O2 and NO while Zn administration to hypothyroid dams reversed this effect.  CMI administration caused some degeneration and deformation  in newborns cerebellum while zinc supplementation to CMI group enhanced structure, length, number and size of purkinje cells, also increase size of the granular layer. Our results indicated that zinc has an improvement role on THs levels and histoarchiture of cerebellum due to its antioxidant role.

Key words:

Carbimazole, zinc, thyroid hormones, antioxidant, prooxidant


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How to Cite

El Ghareeb, A. A., El-Bakry, A. M., Ahmad, R. G., & Gaber, A. (2016). Effects of Zinc Supplementation in Neonatal Hypothyroidism and Cerebellar Distortion Induced by Maternal Carbimazole. Asian Journal of Applied Sciences, 4(4). Retrieved from https://www.ajouronline.com/index.php/AJAS/article/view/4096