tissue hypoxia
DESCRIPTION
tissueTRANSCRIPT
Tissue Hypoxia: Cell Swells – 1st sign [ No ATP No Na/K ATPas] [Na/water enters cell excess]
Irreversible Cell injury dt: Hypoxia: HowDamage to Cell Membrane:
o Free Radicals Lipid Peroxidation [reverse w. Vitamin E!!]o Calcium activates Cell Mem. Phospholipase [bad] Lipid Peroxidation
Calcium Enters Mitochondria: Electron Dense Deposits = destroys mitoch.Mitochondria damage: Caspases released [bad]
Case: Acetaminophen – [converted by Liver P450 into FR….acts on Sulfhydryl groups in hepatocyte cell membranes] MCC: Fulminant Liver Necrosis
Antidote: N-Acetylcysteine……MoA: Replenish GSH [Glutathione – inactivates FR] [GSH made by HMP shunt]