PMID- 10793352 OWN - NLM STAT- MEDLINE DCOM- 20000614 LR - 20221007 IS - 0194-5998 (Print) IS - 0194-5998 (Linking) VI - 122 IP - 5 DP - 2000 May TI - Expression of matrix metalloproteinases and tissue inhibitor of metalloproteinases in laryngeal and pharyngeal squamous cell carcinoma: A quantitative analysis. PG - 712-6 AB - Squamous cell carcinomas of the head and neck are known for their aggressive growth and propensity to metastasize. Invasion is facilitated by matrix metalloproteineases (MMPs). Tissue inhibitors of MMPs (TIMPs) negatively regulate MMP activity. MMP and TIMP expression in head and neck squamous cell carcinomas was determined by quantitative reverse transcriptase polymerase chain reaction (qRT-PCR). qRT-PCR allows measurement of several mRNAs from as little as 4 microg of total cellular RNA. We measured MMP-1, MMP-2, MMP-9, and TIMP-1 expression in 8 specimens of primary tumors and adjacent normal tissue. MMP-1 was overexpressed in 6 of 8 tumors, and MMP-9 was overexpressed in 4 of 7 tumors. MMP-2 was expressed in 3 of 8 tumors and 3 of 8 normal samples. TIMP-1 was expressed in all specimens. This work demonstrates that qRT-PCR can be used to examine expression of specific mRNAs in clinical specimens. Therefore this method provides another tool for the molecular analysis of tumors. FAU - Magary, S P AU - Magary SP AD - Department of Otolaryngology, University of Florida College of Medicine, Gainesville 32610-0264, USA. FAU - Ryan, M W AU - Ryan MW FAU - Tarnuzzer, R W AU - Tarnuzzer RW FAU - Kornberg, L AU - Kornberg L LA - eng PT - Journal Article PL - England TA - Otolaryngol Head Neck Surg JT - Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery JID - 8508176 RN - 0 (RNA, Messenger) RN - 0 (Tissue Inhibitor of Metalloproteinase-1) RN - EC 3.4.24.- (Matrix Metalloproteinases) RN - EC 3.4.24.24 (Matrix Metalloproteinase 2) RN - EC 3.4.24.35 (Matrix Metalloproteinase 9) RN - EC 3.4.24.7 (Matrix Metalloproteinase 1) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Carcinoma, Squamous Cell/*enzymology MH - Female MH - Humans MH - Laryngeal Neoplasms/*chemistry MH - Male MH - Matrix Metalloproteinase 1/analysis MH - Matrix Metalloproteinase 2/analysis MH - Matrix Metalloproteinase 9/analysis MH - Matrix Metalloproteinases/*analysis MH - Middle Aged MH - Pharyngeal Neoplasms/*chemistry MH - RNA, Messenger/analysis MH - Reverse Transcriptase Polymerase Chain Reaction MH - Tissue Inhibitor of Metalloproteinase-1/*analysis EDAT- 2000/05/04 09:00 MHDA- 2000/06/17 09:00 CRDT- 2000/05/04 09:00 PHST- 2000/05/04 09:00 [pubmed] PHST- 2000/06/17 09:00 [medline] PHST- 2000/05/04 09:00 [entrez] AID - S0194599800547871 [pii] AID - 10.1016/S0194-5998(00)70202-6 [doi] PST - ppublish SO - Otolaryngol Head Neck Surg. 2000 May;122(5):712-6. doi: 10.1016/S0194-5998(00)70202-6.