These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Ultrastructural localization of endogenous peroxidase in the human thyroid gland under normal and hyperfunctioning conditions.
    Author: Yamashita H, Noguchi S, Murakami N, Moriuchi A, Hodo M, Yokoyama S, Mochizuki Y, Noguchi A, Nakayama I.
    Journal: Acta Pathol Jpn; 1984 May; 34(3):553-61. PubMed ID: 6547802.
    Abstract:
    Ultrastructural localization of human thyroid peroxidase in normal and hyperfunctioning states has been studied. Peroxidase activity was visualized ultrastructurally with a cytochemical reaction using 0.05% diaminobenzidine-tetrahydrochloride, and hydrogen peroxide with a final concentration of 0.0025%, 0.005%, or 0.01%, respectively, and 2% osmium tetroxide. Reaction product demonstrating the enzyme was clearly observed in cell organelles with a final concentration of hydrogen peroxide at 0.0025% or 0.005%. In the normal portion of thyroid, follicular cells demonstrated the reaction product, located mainly in rough-surfaced endoplasmic reticulum and perinuclear cisternae and in addition a small amount of the product was found in Golgi cisternae and small vesicles dispersed throughout the subapical cytoplasm. The reaction product significantly increased in amount in the cell organelles described above and in addition, a characteristic heavy deposition of the product was observed at the external surface of the microvilli in the follicular cells of thyroid obtained from the patients with treated Basedow's disease.
    [Abstract] [Full Text] [Related] [New Search]