Combined use of hyperthermia and irradiation cause antiproliferative activity and cell death to human esophageal cell carcinoma cells--mainly cell cycle examination.
In clinically hyperthermia and irradiation therapy for malignant neoplasms are known that they have antiproliferative activity and cell death (including apoptosis) inducing activity. However not only mechanisms of cell death induction but treatment effects of them still have been unclear. In this time we showed that cell cycles from G0/G1 phase to S-G2/M phase were delayed by hyperthermia and G2/M phase accumulation were caused immediately by irradiation. And we also demonstrated that the combination treatments of hyperthermia and irradiation induced synergistic antiproliferative effects and strong effects of cell death to human esophageal carcinoma cell lines. Although treatments of hyperthermia and irradiation were mild individually, combination treatment of hyperthermia and irradiation were useful for esophageal carcinoma treatment.
Second Department of Surgery, Toyama Medical and Pharmaceutical University, Toyama City, Japan.
Takashi
T
Yuguchi
Mitsukazu
M
Saito
Yoshinobu
Y
Yokoyama
Tomohiro
T
Saito
Takuya
T
Nagata
Takashi
T
Sakamoto
Kazuhiro
K
Tsukada
D000328:Adult; D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000473:pathology* / Q000628:therapy; D016923:Cell Death; D002455:Cell Division; D003131:Combined Modality Therapy; D004938:Esophageal Neoplasms / Q000473:pathology* / Q000628:therapy; D006801:Humans; D006979:Hyperthermia, Induced; D008297:Male; D008875:Middle Aged; D011878:Radiotherapy; D014407:Tumor Cells, Cultured