[Yeast cell ultrastructure after amiodarone treatment].

Area of Science:

• Cell Biology
• Pharmacology
• Biochemistry

Background:

• Amiodarone is a pharmaceutical agent used for treating various cardiovascular conditions.
• Amiodarone is known to induce structural and functional disturbances in patient tissues.
• Understanding amiodarone's cellular mechanisms is crucial for mitigating its side effects.

Purpose of the Study:

• To investigate the specific cellular effects of amiodarone in the model organism Saccharomyces cerevisiae.
• To elucidate the ultrastructural alterations induced by amiodarone, focusing on phospholipidosis and apoptosis.

Main Methods:

• Treatment of yeast Saccharomyces cerevisiae with amiodarone.
• High-resolution electron microscopy to examine cellular ultrastructure.
• Analysis of mitochondrial morphology, nuclear integrity, and lipid particle accumulation.

Main Results:

• Amiodarone treatment induced apoptosis in Saccharomyces cerevisiae.
• Significant increase in intracellular lipid particles, suggesting phospholipidosis.
• Observed mitochondrial swelling, chromatin displacement, nuclear fragmentation, and nuclear envelope damage.

Conclusions:

• Saccharomyces cerevisiae serves as a relevant model for studying amiodarone-induced cellular toxicity.
• The observed ultrastructural changes are characteristic of amiodarone's phospholipidosis and apoptotic effects.
• Findings provide insights into the molecular mechanisms underlying amiodarone's tissue-damaging potential.