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Updated: Aug 7, 2026

Spectral Reflectometric Microscopy on Myelinated Axons In Situ
Published on: July 2, 2018
The occurrence and significance of myelin with unusually large periodicity
Abstract:
The occurrence of myelin with an unusually large periodicity has been noted in a variety of human and animal diseases by many authors. It has also proved possible to create regular alterations in periodicity by various treatments of fresh unfixed nerve. We have quantified the changes found in material from a variety of sources and conclude that they are compatible with the occurrence of physicochemical changes in the myelin membranes, leading to overhydration.
Insights
Myelin sheath periodicity changes, observed in diseases and experimental conditions, suggest overhydration of myelin membranes due to physicochemical alterations. This finding offers insights into myelin structure and disease mechanisms.
Area of Science:
- Neuroscience
- Biochemistry
- Cell Biology
Background:
- Unusually large myelin periodicity has been observed in various human and animal diseases.
- Experimental treatments of fresh nerve can induce regular alterations in myelin periodicity.
Purpose of the Study:
- To quantify changes in myelin periodicity from diverse sources.
- To investigate the underlying causes of altered myelin periodicity.
Main Methods:
- Quantification of myelin periodicity changes in biological samples.
- Analysis of myelin structure under various conditions.
Main Results:
- Observed variations in myelin periodicity across different disease and experimental contexts.
- Data are consistent with physicochemical changes in myelin membranes.
Conclusions:
- Altered myelin periodicity is linked to physicochemical changes, likely involving overhydration.
- These findings contribute to understanding myelin structure alterations in disease.
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