PMID- 23259295 OWN - NLM STAT- MEDLINE DCOM- 20130520 LR - 20161125 IS - 2096-7993 (Print) IS - 2096-7993 (Linking) VI - 26 IP - 18 DP - 2012 Sep TI - [Expression and clinical significance of MDM2 and P16 in laryngeal squamous cell carcinoma]. PG - 802-5 AB - OBJECTIVE: To investigate the relationship between the protein expression of MDM2 and P16 in laryngeal squamous cell carcinoma (LSCC), and their relationship with clinic pathological feature. METHOD: The expression of MDM2 and P16 were detected by S-P immunohistochemical method with mouse monoclonal anti MDM2 antibody and anti P16 antibody in 35 LSCC specimens, 21 specimens of precancerous larynx, 20 normal laryngeal specimens. RESULT: Expression of MDM2 positive in normal laryngeal specimens, precancerous larynx and LSCC specimens were 10.0%, 38.1%, 54.3% respectively (P < 0.05), and in I - III pathological grade laryngeal carcinoma were 38.1%, 66.7%, 100.0% respectively (P < 0.05); Expression of P16 positive in normal laryngeal specimens, precancerous larynx and LSCC specimens were 85.1%, 52.4%, 34.3% respectively (P < 0.05), and in I - III pathological grade laryngeal carcinoma were 52.4%, 11.1%, 0% respectively (P < 0.05). CONCLUSION: Expression of MDM2 positive were higher with lower differentiation, so it's maybe helpful to diagnose LSCC. Expression of P16 positive were lower with lower differentiation, and there's no expression in III pathological grade LSCC, so it has positive effect on malignancy determination. Abnormal expression of MDM2 and P16 have different effects on LSCC development. Expression of MDM2 and P16 have negative correlation in LSCC. FAU - Li, Dawei AU - Li D AD - Department of Otolaryngology-Head and Neck Surgery, Dalian Municipal Central Hospital, Dalian116033, China. lingfeng887463@sina.com FAU - Zhang, Qingfeng AU - Zhang Q FAU - Zhang, Xinran AU - Zhang X LA - chi PT - Journal Article PL - China TA - Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi JT - Lin chuang er bi yan hou tou jing wai ke za zhi = Journal of clinical otorhinolaryngology, head, and neck surgery JID - 101303164 RN - 0 (Cyclin-Dependent Kinase Inhibitor p16) RN - EC 2.3.2.27 (MDM2 protein, human) RN - EC 2.3.2.27 (Proto-Oncogene Proteins c-mdm2) SB - IM MH - Adult MH - Aged MH - Carcinoma, Squamous Cell/*metabolism/*pathology MH - Cyclin-Dependent Kinase Inhibitor p16/*metabolism MH - Humans MH - Laryngeal Neoplasms/*metabolism/*pathology MH - Middle Aged MH - Prognosis MH - Proto-Oncogene Proteins c-mdm2/*metabolism EDAT- 2012/12/25 06:00 MHDA- 2013/05/22 06:00 CRDT- 2012/12/25 06:00 PHST- 2012/12/25 06:00 [entrez] PHST- 2012/12/25 06:00 [pubmed] PHST- 2013/05/22 06:00 [medline] PST - ppublish SO - Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi. 2012 Sep;26(18):802-5.