PMID- 17219990 OWN - NLM STAT- MEDLINE DCOM- 20110414 LR - 20140625 VI - 20 IP - 21 DP - 2006 Nov TI - [Expression of telomerase reverse transcriptase and its relationship with expression of c-myc in laryngeal squamous cell carcinomas]. PG - 963-6 AB - OBJECTIVE: To investigate the expression of human telomerase reverse transcriptase (hTERT) and c-myc and their relationship with clinicopathological parameter in laryngeal squamous cell carcinoma (LSCC). METHOD: The expression of hTERT protein and c-myc protein in 39 LSCC specimens and 10 vocal cord polyp specimens were detected by immunohistochemistry. The correlation between the expression of hTERT protein and c-myc protein and their relationship with clinicopathological parameter were analyzed. RESULT: The positive rate of hTERT protein and c-myc protein expression in 39 LSCC was 84.6% (33/39) and 82.1% (32/39), respectively. The positive rate of hTERT protein and c-myc protein expression in 10 vocal cord polyps was 0 (0/10) and 10.0% (1/10) respectively. Statistical tests showed that hTERT and c-myc protein expression was significantly higher in LSCC than that in vocal cord polyps. Spearman rank correlation analysis revealed that the expression of c-myc protein was great significantly related to that of hTERT protein (correlation coefficient r = 0.541, P < 0.01). No statistically association was observed among the frequency of hTERT expression and TNM stages, degree of differentiation or lymph nodes metastases. CONCLUSION: The activation of hTERT may be a key step in the pathogenesis of LSCC and the expression of hTERT was associated significantly with that of c-myc gene. C-myc is probably an important control factor in the activation and regulation of hTERT expression. FAU - Chen, Zhiling AU - Chen Z AD - Department of Otorhinolaryngology, Hangzhou Chinese Traditional Medical Hospital, Hangzhou 310007, China. chenzl1202@hotmail.com FAU - Wu, Zhenghu AU - Wu Z FAU - Guo, Xing AU - Guo X FAU - Wu, Zuliang AU - Wu Z FAU - Jiang, Manger AU - Jiang M LA - chi PT - English Abstract PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - China TA - Lin Chuang Er Bi Yan Hou Ke Za Zhi JT - Lin chuang er bi yan hou ke za zhi = Journal of clinical otorhinolaryngology JID - 9426080 RN - 0 (Proto-Oncogene Proteins c-myc) RN - EC 2.7.7.49 (Telomerase) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Carcinoma, Squamous Cell/*genetics/metabolism/pathology MH - Female MH - Humans MH - Laryngeal Neoplasms/genetics/*metabolism/pathology MH - Male MH - Middle Aged MH - Polyps/pathology MH - Proto-Oncogene Proteins c-myc/genetics/*metabolism MH - Telomerase/genetics/*metabolism MH - Vocal Cords/pathology EDAT- 2007/01/16 09:00 MHDA- 2011/04/16 06:00 CRDT- 2007/01/16 09:00 PHST- 2007/01/16 09:00 [pubmed] PHST- 2011/04/16 06:00 [medline] PHST- 2007/01/16 09:00 [entrez] PST - ppublish SO - Lin Chuang Er Bi Yan Hou Ke Za Zhi. 2006 Nov;20(21):963-6.