From diabetic foot to dementia: A neurovascular continuum linking systemic diabetic vasculopathy, cerebral small vessel disease, and glymphatic dysfunction.
Level 5 - mechanism / opinion, no new human data
Narrative review and conceptual framework without primary empirical data.
PubMed 42413140 · doi:10.1016/j.biopha.2026.119681
What was done
This narrative review synthesized literature on type 2 diabetes mellitus, systemic vascular injury, and dementia to propose a conceptual framework linking peripheral microvascular disease with central neuropathology. The authors mapped pathways involving arterial stiffening, neurovascular unit breakdown, and glymphatic clearance impairment.
What was found
The abstract reports no empirical data, statistical analyses, or quantitative results. It describes a mechanistic continuum wherein diabetic vascular pathology (endothelial dysfunction, oxidative stress, impaired Windkessel effect transmitting pulsatile stress to cerebral perforating arteries) causes cerebral small vessel disease, blood-brain barrier breakdown, and glymphatic clearance failure for amyloid-β and tau. Diabetic foot ulceration is framed as a visible surrogate marker for advanced systemic vascular disease rather than a direct cause of dementia.
Why it matters
This framework links clinically visible peripheral diabetic complications to subclinical cerebral microvascular damage, highlighting potential targets for vascular-oriented risk stratification and intervention in diabetes-associated cognitive impairment.
Limits
The paper presents a theoretical narrative model with no original human or animal data and no systematic review methodology. The proposed role of diabetic foot ulcers as a surrogate marker for glymphatic dysfunction and cognitive decline remains a hypothesis requiring prospective clinical validation.
Cited by
- supports Chronically high blood sugar damages blood vessels, causing them to lose flexibility and become brittle and prone to breaking.