透過型電子顕微鏡による骨格筋線維の細胞内グリコーゲン分布の定量化

Overview

This study presents a modified post-fixation procedure that enhances the contrast of glycogen particles in tissue. The protocol details the handling of tissue, imaging techniques, and stereological methods for quantifying glycogen distribution in skeletal muscle.

Key Study Components

Area of Science

• Neuroscience
• Cell Biology
• Histology

Background

• Glycogen content measurement is crucial for understanding cellular responses to physiological changes.
• Single cells exhibit varied adaptations to conditions and diseases.
• High-resolution imaging is essential for observing subcellular structures.
• The technique avoids specificity issues by using antibody-free glycogen staining.

Purpose of Study

• To improve glycogen particle contrast in tissue samples.
• To provide a detailed protocol for imaging and analysis.
• To obtain unbiased data on glycogen distribution in skeletal muscle.

Methods Used

• Modified post-fixation procedure with potassium ferrocyanide.
• Preparation of fixative solution using glutaraldehyde and sodium cacodylate buffer.
• Transmission electron microscopy for high-resolution imaging.
• Stereological methods for quantitative analysis.

Main Results

• Enhanced contrast of glycogen particles was achieved.
• Protocol allows for precise imaging of subcellular structures.
• Unbiased quantification of glycogen distribution was demonstrated.
• Technique is applicable to various tissue types.

Conclusions

• The modified procedure significantly improves glycogen visualization.
• Provides a reliable method for studying glycogen in skeletal muscle.
• Facilitates better understanding of cellular adaptations.

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