there hasn't been much written about the role of glutamate in gliomas, so I was wondering if anyone had looked into it before? It caught my attention some time ago when someone posted a link to "medical food" Cronaxal, which "is a combination of oxaloacetate and ascorbic acid (vitamin C). Oxaloacetate reduces Glutamate levels in the brain in multiple laboratory animal tests. Glutamate overproduction is directly tied to the growth of malignant gliomas, their invasiveness, and their ability to destroy neighboring brain tissue. Patients with Glial Tumors have an impaired capacity to metabolize glutamate due to the high amount of glutamate produced by the tumor itself. Oxaloacetate helps to metabolize glutamate to alpha-ketoglutarate."
Anyway, search on pubmed does return some hits on glutamate and glioma, for example Glutamate and the biology of gliomas (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3107875/) where it states: "Glioblastoma tumors release Glu to enhance their highly malignant behavior, and that Glu release via system xc- and the excess extracellular Glu this system imparts a survival advantage by promoting resistance to apoptosis and by promoting glioma proliferation and invasion. In fact, the invasive nature of gliomas enhanced by Glu release is one of the most important limitations to effective disease control; experience demonstrates that more than 80% of glioblastoma recurrences occur within 2-3 cm of the original resection cavity. Successful treatment of malignant gliomas requires recognition of Glu and its receptors as potential targets and novel approaches modulating their influence are needed to improve upon existing ineffective therapies."
At the end of the article there are some suggestions for targeting glutamate with repurposed drugs, but I also found some supplements that could do that in some degree (like theanine, N-acetylcysteine and glycine). Anyone tried this approach to complement the cocktail?