2-Deoxy-D-glucose protects hippocampal neurons against excitotoxic and oxidative injury: evidence for the involvement of stress proteins.
Level 5 - mechanism / opinion, no new human data
Preclinical animal and in vitro laboratory study
PubMed 10397635 · doi:10.1002/(SICI)1097-4547(19990701)57:1<48::AID-JNR6>3.0.CO;2-L
What was done
Adult rats were administered 2-deoxy-D-glucose (2DG), a non-metabolizable glucose analog, to assess its effects on seizure-induced hippocampal neuron loss and spatial memory deficits. In parallel, primary rat hippocampal cell cultures were pretreated with 2DG prior to exposure to excitotoxic (glutamate) and oxidative (Fe2+) insults to evaluate cell vulnerability, cellular oxidative stress, calcium homeostasis, and expression of stress-responsive proteins (GRP78, HSP70, GRP75, and Bcl-2).
What was found
The abstract reports no numerical values or effect sizes. It reports that in vivo 2DG administration led to a significant reduction in seizure-induced spatial memory deficits and hippocampal neuron loss. In cell culture, 2DG pretreatment reduced vulnerability to glutamate and Fe2+, decreased cellular oxidative stress markers, enhanced calcium homeostasis, and increased protein levels of GRP78 and HSP70, while Bcl-2 and GRP75 levels remained unchanged.
Why it matters
This work shows that pharmacological inhibition of glucose utilization can replicate neuroprotective phenotypes associated with dietary restriction against oxidative and excitotoxic damage in preclinical models.
Limits
The findings are limited to rodent models and cell culture preparations, with unknown applicability to human neurology. The abstract does not report sample sizes, specific dosages, or quantitative outcome measures. Long-term systemic safety and adverse effects of 2DG were not described.
Cited by
- supports Administering 2-deoxyglucose every other day is neuroprotective in animal models.