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 Bibliografske baze podataka

Pregled bibliografske jedinice broj: 197041

Časopis

Autori: Pavelić, Zlatko; Li, Y-Q; Stambrook, J. Peter; McDonald, J.S.; Munck-Wikland, E.; Pavelić, Krešimir; Dačić, S.; Danilović, Z.; Pavelić, Ljiljana; Mugge, R.E.; Wilson, K.; Nguyen, C.; Gluckman, J.L.
Naslov: Overexpression of p53 protein is common in premalignant head and neck lesions
Izvornik: Anticancer research (0250-7005) 14 (1994), 5B; 2259-2266
Vrsta rada: članak
Ključne riječi: p53 ; head and neck lesions
Sažetak:
In order to determine whether or not the p53 gene is involved in the malignant transformation of the head and neck carcinoma HNSCC, we have analyzed archival specimens from 527 primary head and neck lesions and 27 corresponding lymph node metastases. Nuclear p53 protein was present in 107 of 190 (56%) dysplasias, 61 of 102 (60%) carcinoma in situ (CIS), and 262 of 493 (53%) carcinomas. The p53 score did not increase significantly with progression of these lesions from dysplasia to CIS and to carcinoma. All 357 normal samples of head and neck tissues were negative. The majority of the 172 sets of premalignant and malignant lesions displayed concordant p53 staining patterns. The staining was incongruous in only six cases. The p53 staining results were congruent in all 27 pairs of primary and metastatic (lymph nodes) tumors. These data strongly suggest that p53 protein could be altered in a very early phase of the head and neck tumorigenesis and is maintained during tumor progression and metastatic spread. Mutations in p53 were examined in 11 cases that exhibited high levels of p53 protein as detected by immunohistochemistry using PAb 1801 MAb. Mutation analysis was performed by direct sequencing of the PCR amplification products of exons 5 through 8, which contain greater than 90% of p53 mutations found in tumors. Three of 11 HNSCC had mutations at codon 130 (C to A), 193 (A to T), 283 (G to C), respectively. No mutations were found in the other 8 samples within the regions examined. However, they may have mutations in unsequenced regions of p53 or may have wild type protein that accumulates for other reasons.
Izvorni jezik: ENG
Rad je indeksiran u
bazama podataka:
Current Contents Connect (CCC)
MEDLINE
Scopus
SCI-EXP, SSCI i/ili A&HCI
Science Citation Index Expanded (SCI-EXP) (sastavni dio Web of Science Core Collectiona)
Kategorija: Znanstveni
Znanstvena područja:
Temeljne medicinske znanosti
URL Internet adrese: http://europepmc.org/abstract/med/7840533
URL cjelovitog teksta:
Google Scholar: Overexpression of p53 protein is common in premalignant head and neck lesions



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