Blood-Brain Barriers in Obesity.
Level 5 - mechanism / opinion, no new human data
Narrative review of mechanisms without systematic review methodology or new human empirical data
PubMed 28397097 · doi:10.1208/s12248-017-0079-3
What was done
This narrative review examines the relationship between obesity and the central nervous system, focusing on how obesity alters blood-brain barrier (BBB) structure and function. The authors discuss the transport of circulating peripheral proteins into the brain, the relationship between obesity and neurodegenerative conditions such as Alzheimer's disease, and whether BBB alterations can be reversed through weight loss.
What was found
The abstract reports no numerical findings or statistical measures. It qualitatively describes that obesity affects BBB integrity and the transport of circulating regulatory proteins, contributes to cognitive decline and Alzheimer's disease pathogenesis, and notes that these pathological changes may potentially be reversed by weight reduction.
Why it matters
It highlights the blood-brain barrier as a key mechanistic bridge between peripheral metabolic dysfunction and central neurodegeneration, suggesting that obesity-associated neural damage may be modifiable through weight loss.
Limits
The paper is a non-systematic narrative review providing no primary experimental data or quantitative pooling. The abstract does not specify whether findings stem predominantly from animal models or human studies, nor does it detail specific transport mechanisms, clinical endpoints, or the degree of reversibility achieved.
Cited by
- context Blood-brain barrier leakage in hypothalamic regions controlling feeding can trigger obesity rather than obesity causing the leakage.