Neuroprotective Effects of Thiamine and Precursors with Higher Bioavailability: Focus on Benfotiamine and Dibenzoylthiamine.
Level 5 - mechanism / opinion, no new human data
Narrative review of preclinical and clinical literature with mechanistic reasoning
PubMed 34063830 · doi:10.3390/ijms22115418
What was done
This narrative review summarizes the neuroprotective, antioxidant, and anti-inflammatory mechanisms of thiamine (vitamin B1) and high-bioavailability thiamine thioesters, specifically benfotiamine (BFT) and dibenzoylthiamine (DBT), across in vitro experiments, rodent neurodegeneration models, and clinical literature in conditions such as mild Alzheimer's disease.
What was found
The abstract reports no quantitative values or effect estimates. It notes that BFT demonstrates antioxidant and anti-inflammatory effects independent of the classical coenzyme role of thiamine diphosphate, exhibits no adverse effects, and improves cognitive outcomes in individuals with mild Alzheimer's disease. Furthermore, in vitro evidence indicates DBT possesses greater anti-inflammatory potency than BFT.
Why it matters
Thiamine precursors with enhanced bioavailability may overcome the kinetic limitations of standard thiamine supplementation, offering potential therapeutic applications in neurodegenerative and psychiatric disorders.
Limits
The abstract provides no quantitative data, effect sizes, sample sizes, or search criteria. As a narrative review, it synthesizes mixed preclinical (in vitro and animal) and clinical findings without evaluating study quality or reporting risk of bias.
Cited by
- contradicts Benfotiamine is converted into a water-soluble form in the blood and does not cross the blood-brain barrier effectively.