COVID Isn’t Just a Lung Infection—It’s a Mitochondrial Attack (and That Explains the Hypoxia)
This Deep Dive reframes COVID-19 pneumonia as more than infection + inflammation. The review argues SARS-CoV-2 targets mitochondria early, reprogramming mitochondrial gene expression, interacting with mitochondrial proteins, suppressing oxidative phosphorylation (especially Complex I), driving excess fission/fragmentation, and activating mitochondria-linked apoptosis. The most clinically striking link is physiology: mitochondrial Complex I oxygen sensing in pulmonary artery smooth muscle helps drive hypoxic pulmonary vasoconstriction (HPV) — a mechanism that optimizes ventilation/perfusion…
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