Quantitative evaluation of heterochromatin in epithelial atypia by an image processing method
Pathology, Research and Practice
|December 1, 1985
Summary
Digital image analysis aids in studying cellular atypia. A new method using locally adaptive thresholding better describes chromatin structure changes, revealing altered heterochromatin in atypical cells.
Area of Science:
- Biomedical imaging
- Cell biology
- Quantitative pathology
Background:
- Digital image analysis is crucial for quantitative microscopy, particularly in assessing cellular atypia.
- Characterizing complex chromatin structure and its alterations during atypia presents significant challenges for current methods.
Purpose of the Study:
- To develop a novel method for describing chromatin structure in digital microscopy images.
- To investigate changes in chromatin structure associated with cellular atypia using quantitative analysis.
Main Methods:
- Development of a new method for chromatin structure description based on locally adaptive thresholding.
- Application of the method to analyze substructures within cell nuclei images.
Main Results:
- The developed method successfully defines substructures of chromatin images.
- Typical changes in cellular atypia include alterations in the size, optical density, and distribution of high optical density regions (heterochromatin).
Conclusions:
- Locally adaptive thresholding offers an improved approach for quantitative description of chromatin structure.
- Changes in heterochromatin characteristics are key indicators of cellular atypia.
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Related Concept Videos
01:01Euchromatin
The extent of chromatin compaction can be studied by staining chromatin using specific DNA binding dyes. Under the microscope, the dense-compacted regions take up more dye, appearing darker, while the less-compact areas take up less dye and appear lighter. Based on the compaction level, chromatins are classified into two primary forms – euchromatin and heterochromatin.
Euchromatin is the less dense region of the chromatin and stains lighter. Euchromatin contains histone H3 extensively...
Euchromatin is the less dense region of the chromatin and stains lighter. Euchromatin contains histone H3 extensively...
02:38Heterochromatin
The extent of chromatin compaction can be studied by staining chromatin using specific DNA binding dyes. Under the microscope, the dense-compacted regions that take up more dye are called heterochromatin. Heterochromatin is further classified into two forms – constitutive heterochromatin and facultative heterochromatin.
Constitutive heterochromatin: It is a highly compact region of chromatin that is mostly concentrated in the centromere and telomere. Unlike euchromatin, the amino acid at 9th...
Constitutive heterochromatin: It is a highly compact region of chromatin that is mostly concentrated in the centromere and telomere. Unlike euchromatin, the amino acid at 9th...