Element distribution is altered in a zone surrounding human glioblastoma multiforme

Area of Science:

• Neuro-oncology
• Biochemistry
• Trace element analysis

Background:

• Adenosine A(1) receptor (A(1)AR) density is elevated in the peritumoral zone of gliomas.
• Tumor tissue and adjacent brain show lower A(1)AR densities.
• The chemical changes in the peritumoral zone surrounding gliomas are not fully understood.

Purpose of the Study:

• To investigate copper and zinc concentrations in the peritumoral zone of glioblastoma multiforme (GBM).
• To determine if altered element distribution correlates with A(1)AR density changes.
• To assess chemical reorganization in the peritumoral tissue of GBM.

Main Methods:

• Analysis of six human glioblastoma multiforme (GBM) specimens.
• Laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) for element quantification.
• Mapping of copper and zinc distribution in relation to A(1)AR density.

Main Results:

• Copper and zinc levels were significantly increased in the peritumoral zone.
• Elevated copper and zinc concentrations corresponded to regions of higher A(1)AR density.
• The solid tumor tissue showed lower copper and zinc density compared to surrounding brain tissue.

Conclusions:

• Increased peritumoral copper and zinc levels are associated with elevated A(1)AR density in GBM.
• These findings indicate complex chemical changes in the GBM peritumoral zone.
• Altered element distribution is a significant indicator of peritumoral reorganization around infiltrative tumors.