A hydrophilic resin-embedding method for light and electron microscopic detection of tissue anionic sites with cationic colloidal iron: As applied to mouse Paneth cells

Aiji Ohtsuka, A. Kikuta, Takehito Taguchi, T. Murakami

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Abstract

A cationic colloidal iron method was introduced for electron microscopic detection of anionic sites in hydrophilic resin-embedded specimens, and the method was applied to Paneth cells of the mouse jejunum. Mouse jejunal blocks were embedded in hydrophilic acrylic resin (LR White), cut into ultrathin sections, stained with the diluted cationic colloidal iron, and exposed to osmium vapor. The jejunal tissues, including the Paneth cells, embedded in hydrophilic resin were reactive to the fine cationic colloidal iron. At pH value 1.5, fine electron dense colloidal iron deposited along the rims of the secretory granules and the Golgi apparatus of the Paneth cell. Colloidal particles distributed on the osmiophilic reticular structures in the rim and in dot-like fashion lined the border between the granular core and rim. At pH value 4.0, ribosomes reacted to cationic colloidal iron particles in addition to the granular rims and Golgi apparatus. At pH 7.0, even the cores of the secretory granules were stained. Semi-thin sections prepared from the LR White-embedded specimens and stained at pH 1.5 with the diluted (1 : 3 in volume) cationic colloidal iron showed sufficient Prussian blue reaction for light microscopy in the rims of Paneth granules and mucus of goblet cells. This method is therefore useful for correlative light and electron microscopic detection of tissue anionic sites, including sulfate, carboxyl and phosphate groups, at various pH values.

Original languageEnglish
Pages (from-to)423-430
Number of pages8
JournalArchives of Histology and Cytology
Volume56
Issue number4
Publication statusPublished - 1993

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Paneth Cells
Iron
Electrons
Light
Secretory Vesicles
Golgi Apparatus
Prussian Blue Reaction
Osmium
Acrylic Resins
Goblet Cells
Jejunum
Mucus
Ribosomes
Sulfates
Microscopy
Phosphates

ASJC Scopus subject areas

  • Anatomy
  • Histology

Cite this

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title = "A hydrophilic resin-embedding method for light and electron microscopic detection of tissue anionic sites with cationic colloidal iron: As applied to mouse Paneth cells",
abstract = "A cationic colloidal iron method was introduced for electron microscopic detection of anionic sites in hydrophilic resin-embedded specimens, and the method was applied to Paneth cells of the mouse jejunum. Mouse jejunal blocks were embedded in hydrophilic acrylic resin (LR White), cut into ultrathin sections, stained with the diluted cationic colloidal iron, and exposed to osmium vapor. The jejunal tissues, including the Paneth cells, embedded in hydrophilic resin were reactive to the fine cationic colloidal iron. At pH value 1.5, fine electron dense colloidal iron deposited along the rims of the secretory granules and the Golgi apparatus of the Paneth cell. Colloidal particles distributed on the osmiophilic reticular structures in the rim and in dot-like fashion lined the border between the granular core and rim. At pH value 4.0, ribosomes reacted to cationic colloidal iron particles in addition to the granular rims and Golgi apparatus. At pH 7.0, even the cores of the secretory granules were stained. Semi-thin sections prepared from the LR White-embedded specimens and stained at pH 1.5 with the diluted (1 : 3 in volume) cationic colloidal iron showed sufficient Prussian blue reaction for light microscopy in the rims of Paneth granules and mucus of goblet cells. This method is therefore useful for correlative light and electron microscopic detection of tissue anionic sites, including sulfate, carboxyl and phosphate groups, at various pH values.",
author = "Aiji Ohtsuka and A. Kikuta and Takehito Taguchi and T. Murakami",
year = "1993",
language = "English",
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pages = "423--430",
journal = "Archives of Histology and Cytology",
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TY - JOUR

T1 - A hydrophilic resin-embedding method for light and electron microscopic detection of tissue anionic sites with cationic colloidal iron

T2 - As applied to mouse Paneth cells

AU - Ohtsuka, Aiji

AU - Kikuta, A.

AU - Taguchi, Takehito

AU - Murakami, T.

PY - 1993

Y1 - 1993

N2 - A cationic colloidal iron method was introduced for electron microscopic detection of anionic sites in hydrophilic resin-embedded specimens, and the method was applied to Paneth cells of the mouse jejunum. Mouse jejunal blocks were embedded in hydrophilic acrylic resin (LR White), cut into ultrathin sections, stained with the diluted cationic colloidal iron, and exposed to osmium vapor. The jejunal tissues, including the Paneth cells, embedded in hydrophilic resin were reactive to the fine cationic colloidal iron. At pH value 1.5, fine electron dense colloidal iron deposited along the rims of the secretory granules and the Golgi apparatus of the Paneth cell. Colloidal particles distributed on the osmiophilic reticular structures in the rim and in dot-like fashion lined the border between the granular core and rim. At pH value 4.0, ribosomes reacted to cationic colloidal iron particles in addition to the granular rims and Golgi apparatus. At pH 7.0, even the cores of the secretory granules were stained. Semi-thin sections prepared from the LR White-embedded specimens and stained at pH 1.5 with the diluted (1 : 3 in volume) cationic colloidal iron showed sufficient Prussian blue reaction for light microscopy in the rims of Paneth granules and mucus of goblet cells. This method is therefore useful for correlative light and electron microscopic detection of tissue anionic sites, including sulfate, carboxyl and phosphate groups, at various pH values.

AB - A cationic colloidal iron method was introduced for electron microscopic detection of anionic sites in hydrophilic resin-embedded specimens, and the method was applied to Paneth cells of the mouse jejunum. Mouse jejunal blocks were embedded in hydrophilic acrylic resin (LR White), cut into ultrathin sections, stained with the diluted cationic colloidal iron, and exposed to osmium vapor. The jejunal tissues, including the Paneth cells, embedded in hydrophilic resin were reactive to the fine cationic colloidal iron. At pH value 1.5, fine electron dense colloidal iron deposited along the rims of the secretory granules and the Golgi apparatus of the Paneth cell. Colloidal particles distributed on the osmiophilic reticular structures in the rim and in dot-like fashion lined the border between the granular core and rim. At pH value 4.0, ribosomes reacted to cationic colloidal iron particles in addition to the granular rims and Golgi apparatus. At pH 7.0, even the cores of the secretory granules were stained. Semi-thin sections prepared from the LR White-embedded specimens and stained at pH 1.5 with the diluted (1 : 3 in volume) cationic colloidal iron showed sufficient Prussian blue reaction for light microscopy in the rims of Paneth granules and mucus of goblet cells. This method is therefore useful for correlative light and electron microscopic detection of tissue anionic sites, including sulfate, carboxyl and phosphate groups, at various pH values.

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