Reversible cell injury Flashcards
Two main types of reversible cell injury are
- cellular swelling/ hydrophic degeneration
- fatty change
cellular swelling
an early. sub-lethal manifestation of cell damage, characterized by increased cell size and volume
etiology
causative agents include any entity capable of disrupting cellular homeostasis
cloudy swelling
mild, cells may have a pale slightly granular appearance
hydropic (vacuolar) degenerarion
cells are markedly swollen and many vacuoles of variable size appear in the cytoplasm
ballooning degeneration
cells enlarge and eventually rupture
Highly vulnerable to hypoxia and cell swelling are:
- cardiomyocytes
- proximal renal tubule epithelium
- hepatocytes
- endothelium
- CNS neurons
Hydrophic degeneration
cell swelling due to increased uptake of H2O and then to diffuse disintegration of organelles and cytoplasmic proteins
hypertrophy
the cell enlargement is caused by increase of normal organelles
fatty change
a sub-lethal cell damage characterized by intracytoplasmic vacuolation due to presence of vacuoles of fat
lipidosis
refers to the accumulation of triglycerides and other lipid metabolites
hepatic lipidosis
-observed in nutritional disorders
fatty degeneration
accumulation of fat within cells arising as a consequence of cellular injury