Yet another incurable and deadly condition tied to inflammation and endotoxin, and apparently easily preventable by blocking the endotoxin receptor TLR4. If that is the case, then neutralizing endotoxin with charcoal or molecules that can bind endotoxin and deactivate it should have similar effects. There is already evidence that pregnane steroids such as progesterone (and pregnenolone) can ameliorate brain damage from trauma, and it just so happens that progesterone binds and deactivated endotoxin as I posted on my blog in the recent past. In addition, antibiotics in the tetracycline class can block both TLR4 and MMP-9 (another pathway the study implicated in traumatic brain damage)
https://link.springer.com/article/10.1186/s12974-026-03890-4
Concussions Convert Brain Stabilizers Into Disruptive Forces
“…“Brain injury activates TLR4 in neurons,” he said. “TLR4 signaling causes MMP-9 levels to increase. Increased MMP-9 alters how neurons talk to each other, resulting in heightened network excitability associated with seizures and impaired cognition. This direct connection between neuronal TLR4 and MMP-9 in the injured brain is the crucial link.” The research used both rat and mouse models of mild-to-moderate concussive brain injury. The scientists observed that levels of both TLR4 and MMP-9 were upregulated rapidly after injury. But when researchers blocked TLR4 signaling — either pharmacologically in rats or genetically in mice — MMP-9 levels remained unchanged.”
“…“When inhibition drops or excitation becomes excessive, the network activity patterns lose precision,” Subramanian said. “Instead of meaningful communication, you get excessive noise across the network, which interferes with learning, memory formation, and recall.” The researchers found the animals with TBI showed reduced synaptic plasticity — the brain’s ability to strengthen or reorganize neural connections during learning. Consequently, injured animals showed deficits in spatial memory in behavioral tests conducted one month later. To the researchers’ surprise, animals treated with TLR4 or MMP-9 inhibitors early after brain injury performed significantly better.”
