PMID- 21398142 OWN - NLM STAT- MEDLINE DCOM- 20110906 LR - 20110427 IS - 1096-0023 (Electronic) IS - 1043-4666 (Linking) VI - 54 IP - 3 DP - 2011 Jun TI - VEGF and IL-18 in induced sputum of lung cancer patients. PG - 277-81 LID - 10.1016/j.cyto.2011.02.014 [doi] AB - Cytokines are key players in the biological processes of malignant tumors and special interest has been focused on cytokines exerting tumor and anti-tumor properties, such as vascular endothelial growth factor (VEGF) and Interleukin-18 (IL-18). Aim of this study was to assess IL-18 and VEGF levels in induced sputum of lung cancer patients at diagnosis, and assess their possible association with the histological type of cancer, the stage and the overall patient survival. Seventy six patients with a diagnosis of lung cancer were recruited and were followed up for 48months. Thirteen healthy smokers and 16 healthy non-smokers were used as control groups. VEGF and IL-18 were measured by ELISA in sputum supernatants at the time of diagnosis. Lung cancer patients had significantly higher baseline IL-18 and VEGF levels compared to healthy controls (p<0.001). No difference was found in IL-18 and VEGF levels between the various stages in non-small cell lung cancer (NSCLC) and between limited and extended small cell lung cancer (SCLC). However, the ratio of VEGF/IL-18 was significantly higher in NSCLC compared to SCLC patients (p=0.018). In extended SCLC overall survival was inversely associated with baseline sputum VEGF levels (p=0.034) and estimated mortality risk was 1.14 (95% CI 1.006-1.283) for an increase of 100pg/ml in VEGF levels. Such association was not found regarding baseline IL-18 levels. VEGF levels in induced sputum may have a prognostic role in the survival of SCLC. The ratio VEGF/IL-18 in induced sputum differs between NSCLC and SCLC, indicating differences in angiogenesis mechanisms and/or immunological response in these two major histological types of lung cancer. CI - Copyright (c) 2011 Elsevier Ltd. All rights reserved. FAU - Rovina, Nikoletta AU - Rovina N AD - 1st Department of Pulmonary Medicine, "Sotiria" Hospital, Athens Medical School, National and Kapodistrian University of Athens, Greece. nikrovina@med.uoa.gr FAU - Hillas, Georgios AU - Hillas G FAU - Dima, Efrossini AU - Dima E FAU - Vlastos, Fotis AU - Vlastos F FAU - Loukides, Stylianos AU - Loukides S FAU - Veldekis, Dimitrios AU - Veldekis D FAU - Roussos, Charis AU - Roussos C FAU - Alhanatis, Manos AU - Alhanatis M FAU - Bakakos, Petros AU - Bakakos P LA - eng PT - Journal Article DEP - 20110312 PL - England TA - Cytokine JT - Cytokine JID - 9005353 RN - 0 (Interleukin-18) RN - 0 (Vascular Endothelial Growth Factor A) SB - IM MH - Adult MH - Aged MH - Carcinoma, Non-Small-Cell Lung/metabolism MH - Case-Control Studies MH - Female MH - Humans MH - Interleukin-18/*metabolism MH - Lung Neoplasms/*metabolism MH - Male MH - Middle Aged MH - Prognosis MH - Risk MH - Small Cell Lung Carcinoma/metabolism MH - Smoking MH - Sputum/*metabolism MH - Treatment Outcome MH - Vascular Endothelial Growth Factor A/*metabolism EDAT- 2011/03/15 06:00 MHDA- 2011/09/07 06:00 CRDT- 2011/03/15 06:00 PHST- 2010/11/14 00:00 [received] PHST- 2011/01/20 00:00 [revised] PHST- 2011/02/15 00:00 [accepted] PHST- 2011/03/15 06:00 [entrez] PHST- 2011/03/15 06:00 [pubmed] PHST- 2011/09/07 06:00 [medline] AID - S1043-4666(11)00055-X [pii] AID - 10.1016/j.cyto.2011.02.014 [doi] PST - ppublish SO - Cytokine. 2011 Jun;54(3):277-81. doi: 10.1016/j.cyto.2011.02.014. Epub 2011 Mar 12.