Abstract:
Objective To investigate survivin protein and risk factors in non-small cell lung cancer(NSCLC) through a systematic review. Methods The published studies were searched from the Cochrane Library(Issue 1,2011),Pubmed and CNKI databases,and other relevant journals were also handsearched to identify all the relevant case-control trials.Then the quality of the included trials was assessed and meta-analysis was performed by RevMan 4.2.10 software. Results A total of 31 studies were recruited.As for the positive rate of survivin expression,significant differences were discovered between NSCLC and normal lung tissues(
OR=11.11,95%
CI:5.92~20.83,
P<0.05).No significant difference was shown among gender(
OR=1.10,95%
CI:0.87~1.40
P>0.05),age(
OR=1.05,95%
CI:0.66~1.68,
P> 0.05),smoking history(
OR=1.18,95%
CI:0.81~1.73,
P>0.05),and histologic subtype(
OR=1.24,95%
CI:0.90~1.73,
P> 0.05),respectively.There were significant differences between T3~4 and T1~2(
OR=2.20,95%
CI:1.65~2.93,
P<0.05),clinic stages Ⅲ~Ⅳ and clinic stages Ⅰ~Ⅱ(
OR=2.79,95%
CI:1.23~6.35,
P<0.05),lymph node metastasis and non-lymph node metastasis(
OR=2.14,95%
CI:1.36~3.35,
P<0.05),cell differentiation G3 and cell differentiation G1~G2(
OR=1.98,95%
CI=1.27~3.08,
P<0.05).Moreover,the overall survival time was significantly shorter in patients with survivin expression(26.69%) than that in patients with absent survivin expression (62.20%)(
OR=0.16,95%
CI=0.04~0.66,
P<0.05).Survivin expression was positively correlated with p53 (
r=0.400,
P<0.005)and Bcl-2(
r=0.486,
P<0.005). Conclusion Survivin expression increased malignant behaviors of NSCLC,and meanwhile substantial correlation is confirmed between survivin and both p53 and Bcl-2.