How Glutamate Causes Neuronal Cell Death and the Role of Estrogens
Author Information
Author(s): Zhang YueMei, Bhavnani Bhagu R
Primary Institution: University of Toronto, St. Michael's Hospital
Hypothesis
Glutamate-induced apoptosis in neuronal cells is mediated via caspase-dependent and independent mechanisms involving calpain and caspase-3 proteases.
Conclusion
Glutamate-induced apoptosis involves both caspase-dependent and caspase-independent pathways, and this process can be inhibited by equine estrogens.
Supporting Evidence
- Glutamate causes DNA fragmentation and cell death in neuronal cells.
- Estrogens can inhibit glutamate-induced apoptosis.
- Calpain and caspase-3 are involved in the apoptotic process.
- HT22 cells lack caspase-3 and undergo apoptosis via a caspase-independent pathway.
Takeaway
When too much glutamate builds up in the brain, it can kill brain cells. But some hormones, like estrogens, can help protect these cells from dying.
Methodology
The study used primary cortical cells and a mouse hippocampal cell line (HT22) to investigate the roles of calpain, AIF, and caspase-3 in glutamate-induced apoptosis.
Limitations
The study primarily focused on two specific cell types and may not generalize to all neuronal cells.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website