Release date: 2006-10-19
The lactic acid content in tumors can predict the radiation resistance of tumors. It is envisaged that lactate accumulation can be caused by the metabolic intermediates of lactate or glycolysis. For example, pyruvate scavenging effects on atomic groups leads to radiation resistance of malignant tumors. One hypothesis was that scientists transplanted five human head and neck squamous cell carcinoma cell lines (HNSCCs) into nude mice and used a radiotherapy regimen 30 times in 6 weeks.
The radiation therapy dose (TCD (50)) required to locally control 50% of the tumors ranged from 47.4 to 129.8 Gy. The concentration of glucose, lactic acid and ATP in different tumor regions was evaluated by structure-related quantitative bioluminescence imaging techniques as an indicator of glycolysis activity. The results showed that the average lactic acid concentration of different tumor cell lines was between 7.3-25.9mumol/g, and the TCD(50) value was positively correlated with tumor lactate level (R=0.9824, p=0.0028).
Therefore, the above results support the hypothesis that lactic acid content in tissues is related to the radiation resistance of human solid tumors. In addition, the results also suggest that lactic acid content in tumors can also be used to predict the radiation resistance of malignant tumors, and transient inhibition during treatment. Glycolysis may increase the sensitivity of tumors to radiation therapy. (medical space)
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