VSE knjižnice (vzajemna bibliografsko-kataložna baza podatkov COBIB.SI)
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Immunohistochemical analysis of pro- and active-caspase 3 in laryngeal squamous cell carcinomaCör, Andrej ; Pižem, Jože ; Gale, NinaActive caspase 3 is considered to be the main executioner caspase in apoptoticprocess. The mechanisms of apoptosis in laryngeal squamous cell carcinoma (LSCC) have been investigated by examining the ... expression profiles of pro-caspase 3 and active-caspase 3. The correlation between the two forms of caspase 3 and the p53 status was also determined. LSCCs (n=65) were studiedusing immunohistochemistry with antibodies to pro-caspase 3, active-caspase 3 and p53. The expression of pro-caspase 3 was absent or weak in 16 (24.6%), moderate in 21 (32.3%) and strong in 28 (43.1%) cases. Survivalcurves for different levels of pro-caspase 3 differed, but the differences were not statistically significant. An apoptotic index (AI) was determined by quantifying the active-caspase 3-positive cells. The AI ranged from 0.2% to 9.4% and did not differ among the different levels of pro-caspase3 expression. Even in cases in which the expression of pro-caspase 3 was considered negative, caspase 3-positive apoptotic cells were found. The AIs were significantly higher in supraglottic tumours compared with glottic counterparts (P=0.008) and were higher in poorly differentiated tumours compared with welldifferentiated and moderately differentiated LSCC (P= 0.06).No correlation between AI and p53 expression was found, although pro-caspase 3 expression trended to be higher in the p53-positive group of LSCC. Our results suggest that the expression of pro-caspase 3, a key executioner caspase in apoptosis, is downregulated in a proportion of LSCC, but this is not associated with de creased apoptotic activity, measured by active-caspase 3 labelling.Vir: Virchows Archiv. - ISSN 0945-6317 (Letn. 444, 2004, str. 439-446)Vrsta gradiva - članek, sestavni delLeto - 2004Jezik - angleškiCOBISS.SI-ID - 17842649
Avtor
Cör, Andrej |
Pižem, Jože |
Gale, Nina
Teme
Laryngeal Neoplasms |
Pathology |
Carcinoma, Squamous Cell |
Pathology |
Apoptosis |
Cysteine Proteinases |
Biopsy |
Immunohistochemistry |
Survival Analysis |
Apoptoza |
Grlo, novotvorbe |
Karcinom ploščatocelični |
Biopsija |
Imunohistokemija |
Preživetje, analiza
Vnos na polico
Trajna povezava
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Baze podatkov, v katerih je revija indeksirana
Ime baze podatkov | Področje | Leto |
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Cör, Andrej | 11308 |
Pižem, Jože | 26058 |
Gale, Nina | 02127 |
Vir: Osebne bibliografije
in: SICRIS
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