Summary
Blood-brain barrier breakdown happens before cognitive decline and may be the real driver of dementia. APOE4 carriers face higher risk through vascular dysfunction, but aerobic exercise and omega-3s protect barrier integrity. Cumulative hypertension exposure is a major modifiable risk factor.
Key Points
- Blood-brain barrier breakdown is an early biomarker that precedes cognitive decline in dementia
- Pericyte degeneration plays a key role in neurovascular dysfunction and neurodegeneration
- APOE4 genotype significantly impacts vascular integrity and dementia risk
- Fibrinogen and other plasma proteins become neurotoxic when they leak into brain tissue
- Omega-3 fatty acids support brain vascular health through the MFSD2A transporter
- Aerobic exercise provides protective effects on brain vasculature and barrier function
- Cumulative hypertension exposure substantially increases dementia risk over a lifetime
Key Moments
Alzheimer Prevention: Prevention
See, if you don't do enough exercise, you will start chronically to have some vessels that will basically constrict and collapse and disappear.
"See, if you don't do enough exercise, you will start chronically to have some vessels that will basically constrict and collapse and disappear."
Protein Aggregation: Protocol
See, if you don't do enough exercise, you will start chronically to have some vessels that will basically constrict and collapse and disappear.
"See, if you don't do enough exercise, you will start chronically to have some vessels that will basically constrict and collapse and disappear."
Blood Brain Barrier: Protocol
See, if you don't do enough exercise, you will start chronically to have some vessels that will basically constrict and collapse and disappear.
"Another thing we can do right now is to support the vascular system. We can engage in regular, ideally vigorous exercise that achieves a high heart rate."
Protein Aggregation: How To
The members-only podcast also features an extensive collection of members-only episodes ranging from the Q&A sessions to short members episodes we call aliquots, which feature a mixture of segments taken from our interview series and...
"The members-only podcast also features an extensive collection of members-only episodes ranging from the Q&A sessions to short members episodes we call aliquots, which feature a mixture of segments..."
Blood Brain Barrier Discussion
I mean, the main dementia form. There is also small vessel disease.
"And we know now that this is something that is accelerated in people that go towards dementia. And this is true in Alzheimer's disease, which is the major cause. I mean, the main dementia form. There is also small vessel disease."
Blood Brain Barrier Discussion
They have to stay there to maintain the integrity and to avoid leakages. There is gene therapy.
"And if they are not there to maintain the integrity of the barrier, we know that there is these leakages. So the whole idea of different labs in the world is to make sure that these parasites wrapping the smallest vessels in the brain don't detach."
Alzheimer Prevention: Risk Factor
Meaning that the surrounding neurons that are here and they need oxygen and nutrients and everything from these vessels, if these vessels disappear, you're going to lose neurons, right?
"And just to, we can talk a bit more about this, but just to go back at the beginning of your question you were mentioning exercise and I think exercise is very important even me at mid you know I'm..."
Alzheimer Prevention Discussion
Same with Alzheimer's. We haven't talked about this, but there is the sporadic form, the most common form, and the genetic form.
"And the last thing maybe I forgot to mention is this is the sporadic form of small vessel disease, but there is also the genetic form. Same with Alzheimer's."
Blood Brain Barrier Discussion
It's HTR1, HTR, HTR, A1, sorry, protein that is involved. White-manner disease, microbleeds, lacunes, and blood-brain barrier issues.
"White-manner disease, microbleeds, lacunes, and blood-brain barrier issues."
Omega 3 Discussion
I think glucose is playing a big role here, and it's currently investigated. I don't know much more than that.
"I think glucose is playing a big role here, and it's currently investigated. I don't know much more than that. Sorry."
Alzheimer Prevention: Prevention
He looked at Alzheimer's and healthy controls. He looked at their plasma and he has looked at using proteomics, looking at different proteins, Alzheimer's story and normal aging.
"He looked at Alzheimer's and healthy controls."
Blood Brain Barrier Discussion
I think glucose is playing a big role here, and it's currently investigated. I don't know much more than that.
"He looked at their plasma and he has looked at using proteomics, looking at different proteins, Alzheimer's story and normal aging. And what he found, I think the most striking finding was normal aging."
Omega 3: Epa
She's at Gladstone University, UCSF area, where I think she developed an antibody that blocks the interaction between fibrinogen and microvia to avoid that overexpression of information or overactivation of microvial cells, because she's also...
"She's at Gladstone University, UCSF area, where I think she developed an antibody that blocks the interaction between fibrinogen and microvia to avoid that overexpression of information or..."
Blood Brain Barrier Discussion
that do have blood-brain barrier issues.
"You have less chance to bite to LRP1, which will induce a cascade within the pericylates that involve NSKPB, it's a bit complicated, cyclophiline, which then will lead to expression of MMP9 from pericylates and on the teal cell."
Protein Aggregation Discussion
At least we know it partially works in animals, but it might be another possibility, might be to target MMP9. This has been also studied quite a lot in the context of stroke.
"This has been also studied quite a lot in the context of stroke. But as you know, there's a thousand compounds that failed in stroke for many reasons."
Blood Brain Barrier Discussion
At least we know it partially works in animals, but it might be another possibility, might be to target MMP9. This has been also studied quite a lot in the context of stroke.
"This has been also studied quite a lot in the context of stroke. But as you know, there's a thousand compounds that failed in stroke for many reasons."
Alzheimer Prevention: Prevention
Again, I'm not the expert on that.
"So that's the intramural periarterial drainage. So there's basically either the lymphatic and or the iPad system to clear out toxins out of the brain. Again, I'm not the expert on that."
Sauna: Cardiovascular
it goes back to I think just the final point is I think it's very important the duration the chronic part of hypertension is very critical if you have that for many years same thing...
"it goes back to I think just the final point is I think it's very important the duration the chronic part of hypertension is very critical if you have that for many years same thing for incline aging..."
Blood Brain Barrier Discussion
If you use it, you know, two to three times a week, there's like a 20% lower risk after adjusting for other factors as well.
"Do you know about, you mentioned like, you know, obesity and type 2 diabetes and these things also, I mean, does obesity accelerate the blood-brain barrier breakdown or leakiness?"
