Expression of nNOS and correlation with clinical prognosis in renal clear cell carcinoma
10.3760/cma.j.issn.1000-6702.2017.07.011
- VernacularTitle:神经型一氧化氮合酶在肾透明细胞癌中的表达及判断临床预后的价值
- Author:
Wen XIAO
;
Changfei YUAN
;
Zhiyong XIONG
;
Lin BAO
;
Ning LOU
;
Hailong RUAN
;
Junwei TONG
;
Haibing XIAO
;
Ke CHEN
;
Xiaoping ZHANG
- Keywords:
Clear cell renal cell carcinoma;
Neural-nitric oxide synthase;
Prognosis
- From:
Chinese Journal of Urology
2017;38(7):523-526
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the expression of neural-nitric oxide synthase (nNOS) in renal clear cell carcinoma and its clinical significance.Methods The expression of nNOS mRNA in 533 samples of TCGA database was analyzed with Student t test,and statistical analysis was performed to assess the relationship between nNOS expression and clinical prognosis with Kapla-Meier test.Western blot analysis of nNOS protein expression in 10 cases of clear cell renal cell carcinoma(ccRCC) from department of urology of Wuhan union hospital with student t test.Results The mRNA levels of nNOS in 72 cases of ccRCC in tumor tissues and adjacent tissues and were 2.99 ± 0.28 and-1.57 ± 0.17,it is significantly lower than those in adjacent tissues (P ＜ 0.01).The mRNA levels of nNOS in 533 cases of ccRCC,in tumor tissues and adjacent tissues and were 2.99 ± 0.28 and-1.76 ± 0.05,it is significantly lower than those in adjacent tissues (P ＜ 0.01).A total of 533 sample studies showed a low correlation between nNOS expression and clinical T stage,T1-1.59 ±0.08,T2-1.96 ±0.13,T3-1.90 ±0.09,T4-2.38 ±0.28 (P =0.0029) and -1.63 ±0.06 and-2.16 ± 0.13 between non-metastasis and no-metastasis (P =0.0009),and-1.57 ± 0.08 and-2.03 ± 0.11 between non-recurrence and recurrence (P =0.008).Survival analysis showed that the overall survival time were (40.3 ± 5.6) months and (48.3 ± 5.7) months in lower and higher nNOS expression,and disease free survival time were (37.1 ± 2.1) months and (40.3 ± 5.6) months in lower and higher nNOS expression,both with shorter time in low expression of nNOS (P ＜ 0.01).nNOS proteins were 1.02 ± 0.16 and 0.61 ± 0.1 1 in tumor tissues and adjacent tissues with significantly lower expression(P＜0.05).Conclusions The mRNA and protein of nNOS are lower in ccRCC with a poor prognosis of ccRCC.
