title: Analysis of the prognostic impact of nestin expression in non-small cell lung cancer.
abstract: BACKGROUND
  Nestin is an intermediary filament protein, expressed in progenitor cells of neural and muscle origin and in activated endothelium. The expression of this protein in tumours can be associated with degree of differentiation, biological potential and/or neoangiogenesis.
  
  
  OBJECTIVE
  The aim of this study was to examine the immunohistochemical expression of nestin in primary non-small cell lung carcinomas (NSCLC) and to determine its prognostic significance.
  
  
  METHODS
  Immunohistochemical detection of nestin was carried out on tissue microarrays constructed from 114 formalin-fixed and paraffin-embedded NSCLC samples. These included 78 squamous cell carcinomas and 37 adenocarcinomas. Expression of nestin was also analysed in 35 primary tumour independent NSCLC brain metastasis. The H-score and degree of nestin positive microvascularisation were determined. Both parameters correlated with the clinicopathological characteristics including disease-free and overall survival. Results. We demonstrated that expression of nestin is not significantly higher in tumour cells of adenocarcinomas than in sqamous cell carcinomas despite the fact that adenocarcinomas were more frequently positive (P≤0.30). On the other hand, nestin positivity and nestin positive neovascularisation were significantly more often found in stage IIIa tumours than tumours in stages I and II (P≤0.04, P≤0.02). Nestin expression was also significantly higher in brain metastases of squamous cell carcinomas than brain metastases of adenocarcinomas (P≤0.003). The expression of nestin, in general, did not significantly correspond to disease-free or overall survival.
  
  
  CONCLUSIONS
  Nestin expression in NSCLCs is associated with poorer prognosis and with greater nestin-positive microvessel density.
authors: Department of Clinical and Molecular Pathology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Czech Republic. jojos@email.cz
authors: Jozef
authors: J
authors: Skarda
authors: Zdenek
authors: Z
authors: Kolar
authors: Maria
authors: M
authors: Janikova
authors: Lenka
authors: L
authors: Radova
authors: Vitezslav
authors: V
authors: Kolek
authors: Edi
authors: E
authors: Fridman
authors: Juri
authors: J
authors: Kopolovic
mesh_terms: D000230:Adenocarcinoma / Q000378:metabolism / Q000556:secondary; D014408:Biomarkers, Tumor / Q000378:metabolism; D001932:Brain Neoplasms / Q000378:metabolism / Q000556:secondary; D002289:Carcinoma, Non-Small-Cell Lung / Q000378:metabolism* / Q000473:pathology / Q000556:secondary; D002294:Carcinoma, Squamous Cell / Q000378:metabolism / Q000556:secondary; D018572:Disease-Free Survival; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D007381:Intermediate Filament Proteins / Q000378:metabolism*; D008175:Lung Neoplasms / Q000378:metabolism* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D009419:Nerve Tissue Proteins / Q000378:metabolism*; D064231:Nestin; D011379:Prognosis
chemical_list: D014408:Biomarkers, Tumor; D007381:Intermediate Filament Proteins; C577484:NES protein, human; D009419:Nerve Tissue Proteins; D064231:Nestin