[Chemosensitivity testing of oral squamous cell carcinomas with teniposide].
OBJECTIVE
To investigate the antitumor effectiveness of teniposide in oral squamous cell carcinomas (OSCC) and to find evidence for using teniposide for treatment of patients with OSCC.


METHODS
Seventy-five patients with OSCC from the School of Stomatology, Shanghai Second medical University during 1999 to 2001 were evaluated. Tumors were diagnosed pathologically, and drug sensitivity tested. The antitumor drugs tested were cisplatin (CDDP) and teniposide (VM-26). Fresh drug was diluted in complete medium at fold of five times of peak plasma concentration (PPC x 5) achieved by intravenous administration of clinical doses. The concentrations were VM-26 60 mg/L, CDDP 15 mg/L.


RESULTS
The MTT assay was performed in 75 of 81 patients (success rate 92.6%). The clinical stages of the 75 patients according to the UICC TNM classification of malignant tumors were 28 with stage IV, 34 with stage III, 11 with stage II and 2 with stage I. The pathological grades of the 75 patients according to three step classification were 18 with Grade I, 37 with Grade I approximately II and 20 with Grade III. At a drug concentration of PPC x 5, the inhibition rates of tumor cells for VM-26 and CDDP were 63.34% and 24.08%, respectively. The inhibition rates of tumor cells for VM-26 were significantly higher than those for CDDP (P < 0.01).


CONCLUSIONS
The inhibition rates of OSCC cells for VM-26 are significantly higher than for CDDP. VM-26 may be the first selected drug for treating patients with OSCC.
Chen
Wan-tao
WT
Department of Oral and Maxillofacial Surgery, School of Stomatology, Shanghai Second Medical University, Shanghai 200011, China.
Zhou
Xiao-jian
XJ
Xu
Qin
Q
Guo
Wei
W
Zhu
Han-guang
HG
Ye
Wei-min
WM
D000970:Antineoplastic Agents / Q000494:pharmacology*; D002294:Carcinoma, Squamous Cell / Q000188:drug therapy* / Q000473:pathology; D045744:Cell Line, Tumor; D004354:Drug Screening Assays, Antitumor; D005260:Female; D006801:Humans; D008297:Male; D009062:Mouth Neoplasms / Q000188:drug therapy* / Q000473:pathology; D013713:Teniposide / Q000494:pharmacology*
D000970:Antineoplastic Agents; D013713:Teniposide