Abstract
We aimed to investigate expression of magnesium transporter genes in patients with head and neck cancer who underwent cisplatin-based neoadjuvant chemotherapy and their association with serum magnesium level. Head and neck cancer patients scheduled to undergo neoadjuvant cisplatin-based chemotherapy were eligible for enrollment. Blood samples were obtained at three time points: prior to, during, and after completion of chemotherapy. Expression levels of magnesium transporter genes were determined by quantitative real-time PCR. A total of 23 patients were included in the final analysis. The average serum magnesium levels dropped 6.98 and 5.20% during and after completion of chemotherapy. There were neither significant associations between serum magnesium level and demographic variables nor tumor-related variables. SLC41A1 expression level was positively correlated with serum magnesium whereas TRPM6 expression level was negatively correlated with serum magnesium. Serum magnesium level decreased during cisplatin-based chemotherapy in head and neck cancer patients. Further studies are warranted to investigate optimal magnesium measurement and substitution protocol.
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