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Effect and mechanism of hyperthermia on cell apoptosis of laryngeal squamous cell carcinoma patients
Zhu Xiaofei1, Wang Liang1, Zheng Yingjuan2, Yang Daoke2, Zhang Peng1, Fang Jie1
1Department of Otolaryngology Head and Neck Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China; 2Department of Radiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
AbstractObjective To evaluate the effect of hyperthermia on the apoptosis and the expression levels of cysteine-containing aspartate-specific protease-3 (Caspase-3) and phosphorylated protein kinase B (p-AKT) in laryngeal squamous cell carcinoma cells. Methods A prospective study was conducted on 30 patients with laryngeal squamous cell carcinoma who were treated at the First Affiliated Hospital of Zhengzhou University from October, 2021 to October, 2022. Three times of hyperthermia were performed with a time interval of 24 h. The tumor tissue samples were collected from 30 patients before and after hyperthermia and divided into before hyperthermia group (group A ) and after hyperthermia group (group B). Self-control study mode was adopted for comrparative analysis. The cell apoptosis was detected by TUNEL assay. The expression levels of Caspase-3 and p-AKT in the tissues were detected by immunohistochemistry. Positive cell ratio and immunohistochemistry (IHC) score were recorded. Comparison between two groups was performed by paired t-test. The correlation between the degree of apoptosis and the changes of Caspase-3 and p-AKT molecules was assessed by Pearson correlation analysis. Results No evident adverse reactions were observed in 30 patients after hyperthermia. The apoptosis index of laryngeal squamous cell carcinoma cells in group A was 2.37%±1.33%, and 4.27%±3.93% in group B (P=0.006). In group A, the ratio of Caspase-3 positive cells in tumor tissues was 62.31%±19.49% and 80.79%±17.15% in group B (P=0.001). The ratio of p-AKT positive cells in group A was 31.26%±19.30%, and 26.26%±15.86% in group B (P=0.023). There was a positive correlation between the degree of apoptosis and the changes of Caspase-3 molecule (r=0.544, P=0.002), but a negative correlation was noted between the degree of apoptosis and the changes of p-AKT molecule (r=-0.434, P=0.017). Conclusion Hyperthermia can promote the apoptosis of tumor cells in laryngeal squamous cell carcinoma, which may be related to Caspase-3 dependent apoptosis, and the inhibition of AKT phosphorylation is also involved in this process.
Corresponding Authors:
Wang Liang, Email: wangliangdoctor@hotmail.com
Cite this article:
Zhu Xiaofei,Wang Liang,Zheng Yingjuan et al. Effect and mechanism of hyperthermia on cell apoptosis of laryngeal squamous cell carcinoma patients[J]. Chinese Journal of Radiation Oncology, 2023, 32(6): 493-498.
Zhu Xiaofei,Wang Liang,Zheng Yingjuan et al. Effect and mechanism of hyperthermia on cell apoptosis of laryngeal squamous cell carcinoma patients[J]. Chinese Journal of Radiation Oncology, 2023, 32(6): 493-498.
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2023, Vol. 32 
