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Electron microscopic study on mitochondria in Hürthle cell adenoma of thyroid
Abstract:
In this investigation Hürthle cell adenoma of the thyroid was observed by electron microscopy. The cytoplasm of the cells consisted chiefly of an accumulation of numerous irregularly shaped mitochondria. Very few other organellae were observed. In addition electron microscopy revealed various degrees of electron density in the matrix of the mitochondria. When 3 dimensional models of the mitochondria were constructed, they revealed the mitochondria to have 3 dimentional forms which sometimes looked as if they might be dividing into two or three parts. The authors felt that this indicated a process of vigorous division of mitochondria and an extension of their life span. However, it was not possible to identify the cause of this division of mitochondria.
Insights
Hürthle cell adenoma involves thyroid cells with abundant, irregularly shaped mitochondria. Electron microscopy suggests these mitochondria are actively dividing, potentially extending their lifespan.
Area of Science:
- Endocrinology
- Cell Biology
- Pathology
Background:
- Hürthle cell adenoma is a thyroid neoplasm.
- The cellular characteristics of this adenoma are not fully understood.
Purpose of the Study:
- To investigate the ultrastructural morphology of Hürthle cell adenoma using electron microscopy.
- To characterize the mitochondrial changes within Hürthle cells.
Main Methods:
- Electron microscopy was used to examine thyroid tissue from Hürthle cell adenoma.
- 3D models of mitochondria were constructed from electron microscopy data.
Main Results:
- Thyroid Hürthle cells predominantly contained numerous, irregularly shaped mitochondria.
- Mitochondria exhibited varying electron densities within their matrix.
- Mitochondria displayed 3D forms suggestive of active division.
Conclusions:
- The findings suggest vigorous mitochondrial division and potentially extended lifespan in Hürthle cell adenoma.
- The specific cause of this mitochondrial proliferation remains unidentified.