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  • Title: Thyroparathyroidectomy increases the activity of catalase in the adrenal gland of the rat. A structural and functional study.
    Author: Conran RM, Nickerson PA.
    Journal: J Submicrosc Cytol; 1982 Apr; 14(2):305-12. PubMed ID: 7077712.
    Abstract:
    At four weeks after thyroparathyroidectomy the activity of catalase in adrenal homogenates was significantly greater (2.95 +/- 0.06 mumoles 0(2)/min/mg protein) than that of controls (2.17 +/- 0.09 mumoles 0(2)/min/mg protein). Increased activity of catalase is related directly to more numerous peroxisomes in cortical cells in the zona fasciculata-zona reticularis of thyroparathyroidectomized rats. The absolute and relative volumes of adrenal gland and zona fasciculata were reduced significantly which is directly correlated with increased peroxisomal activity. A hormonally mediated mechanism reflecting alteration in ACTH, growth hormones and thyroid hormones may mediate adrenocortical atrophy and in turn increase in activity of catalase.
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