ELECTRON MICROSCOPIC LOCALIZATION OF ACID PHOSPHATASE AND THIAMINE PYROPHOSPHATASE ACTIVITY IN HYPOTHALAMIC NEUROSECRETORY CELLS OF THE RAT - PubMed (original) (raw)

ELECTRON MICROSCOPIC LOCALIZATION OF ACID PHOSPHATASE AND THIAMINE PYROPHOSPHATASE ACTIVITY IN HYPOTHALAMIC NEUROSECRETORY CELLS OF THE RAT

J OSINCHAK. J Cell Biol. 1964 Apr.

Abstract

Supraoptic nuclei in the hypothalamus of rats were fixed for the electron microscope by vascular perfusion with solutions of glutaraldehyde followed by post fixation with osmium tetroxide. Cytochemical methods for detection of acid phosphatase and thiamine pyrophosphatase activity have been applied to glutaraldehyde-fixed frozen sections containing the neurosecretory cells. The enzyme activities have been localized to certain Golgi cisternae. Acid phosphatase activity is present in the large (0.4 micro to 1.0 micro) granules or dense bodies which are surrounded by a single limiting membrane; both features characterize these structures as lysosomes. Smaller (0.1 micro) granules also present in the perikarya are generally unreactive towards enzyme activity and resemble in form the neurosecretory granules in the neurohypophysis.

PubMed Disclaimer

Similar articles

Cited by

References

    1. J Exp Med. 1952 Mar;95(3):285-98 - PubMed
    1. J Biophys Biochem Cytol. 1955 Jan;1(1):69-88 - PubMed
    1. Z Zellforsch Mikrosk Anat. 1957;47(1):114-26 - PubMed
    1. J Biophys Biochem Cytol. 1958 Jul 25;4(4):475-8 - PubMed
    1. J Biophys Biochem Cytol. 1959 Mar 25;5(2):327-42 - PubMed

MeSH terms

Substances

LinkOut - more resources