长期吸烟老年人检测血清血管内皮生长因子和内皮抑素对肺癌早期诊断的临床意义

目的 探讨长期吸烟老年人血清血管内皮生长因子(vascular endothelial growth factor,VEGF)和内皮抑素(endostatin)水平的变化及其临床意义.方法 测定52例长期吸烟老年人血清VEGF和endostatin水平,其中伴肺癌组32例,不伴肺癌组20例,20例不吸烟健康老年人为正常对照组.结果 (1)伴肺癌组血清VEGF水平明显高于不伴肺癌组(t=13.681,P＜0.01)和对照组(t=9.372,P＜0.01).不伴肺癌组高于对照组(t=5.250,P＜0.05);(2)伴肺癌组血清endostatin水平明显高于对照组(t=5.332,P＜0.01),但与不伴肺癌组比较,差异无统计学意义(t=0.814,P＞0.05).不伴肺癌组与对照组比较,差异有统计学意义(t=3.700,P＜0.05);(3)伴肺癌组血清endostatin/VEGF比值明显低于不伴肺癌组(t=6.270,P＜0.01)和对照组(t=7.138,P＜0.01),但不伴肺癌组与对照组比较,差异无统计学意义(t=1.022,P＞0.05).结论 长期吸烟老年人应定期检测血清VEGF、endostatin水平及endostatin/VEGF比值,endostatin/VEGF比值可能是长期吸烟老年人早期诊断肺癌的指标之一.

Abstract：

Objective To explore the changes and clinical significances of serum vascular endothelial growth factor (VEGF) and endostatin concentrations for early detection of lung cancer in elderly long-term smokers. Methods Serum VEGF and endostatin concentrations were determined in 52 elderly long-term smokers and 20 elderly non-smokers by enzyme linked immunoabsent assay (ELISA) or competitive enzyme immunoassay. The 52 elderly long-term smokers were divided into lung cancer group (n = 32) and non-lung cancer group (n = 20). Results The concentration of serum VEGF was markedly higher in lung cancer group (15. 7±8. 0) ng/L] than in non-lung cancer group and normal control group (t= 13. 681, t= 9. 372, respectively, both P＜0. 01). And the level of serum VEGF was significantly higher in non-lung cancer group than in normal control group (t=5. 250, P＜0. 05). The level of serum endostatin was significantly higher in elderly long-term smokers with or without lung cancer than in normal control group (t=5. 332, t=3. 700, respectively, P＜0. 01 and P＜0.05). But there was no statistic difference between non-lung cancer group and lung cancer group (t = 0. 814, P＞ 0.05 ). Notably, the endostatin/VEGF ratio was lower in lung cancer group than in non-lung cancer group and normal control group (t= 6. 270, t= 7. 138, respectively, both P＜0.01), while there was no significant difference between non-lung cancer group and normal control group (t= 1. 022, P＞0.05). Conclusions These findings suggest that the periodic detection of serum VEGF and endostatin and endostatin/VEGF ratio, especially endostatin/VEGF ratio, is of clinical importance and can be used as an early diagnostic marker of lung cancer in elderly long-term smokers.

Clinical significance of detecting serum vascular endothelial growth factor and endostatin levels for lung cancer early detection in elderly long-term smokers

Objective To explore the changes and clinical significances of serum vascular endothelial growth factor (VEGF) and endostatin concentrations for early detection of lung cancer in elderly long-term smokers. Methods Serum VEGF and endostatin concentrations were determined in 52 elderly long-term smokers and 20 elderly non-smokers by enzyme linked immunoabsent assay (ELISA) or competitive enzyme immunoassay. The 52 elderly long-term smokers were divided into lung cancer group (n = 32) and non-lung cancer group (n = 20). Results The concentration of serum VEGF was markedly higher in lung cancer group (15. 7±8. 0) ng/L] than in non-lung cancer group and normal control group (t= 13. 681, t= 9. 372, respectively, both P＜0. 01). And the level of serum VEGF was significantly higher in non-lung cancer group than in normal control group (t=5. 250, P＜0. 05). The level of serum endostatin was significantly higher in elderly long-term smokers with or without lung cancer than in normal control group (t=5. 332, t=3. 700, respectively, P＜0. 01 and P＜0.05). But there was no statistic difference between non-lung cancer group and lung cancer group (t = 0. 814, P＞ 0.05 ). Notably, the endostatin/VEGF ratio was lower in lung cancer group than in non-lung cancer group and normal control group (t= 6. 270, t= 7. 138, respectively, both P＜0.01), while there was no significant difference between non-lung cancer group and normal control group (t= 1. 022, P＞0.05). Conclusions These findings suggest that the periodic detection of serum VEGF and endostatin and endostatin/VEGF ratio, especially endostatin/VEGF ratio, is of clinical importance and can be used as an early diagnostic marker of lung cancer in elderly long-term smokers.