RESUMO
【Objective】 To study the frequency, Rh phenotypes and molecular & biological background of D-elute (Del) phenotype in RhD-negative blood donors in Dalian. 【Methods】 A total of 355 serologically RhD-negative samples between November, 2018 and October, 2019 in Dalian Blood Center were collected, and tested for RhC, c, E, e phenotypes using monoclonal antibodies and anti-D adsorption/elution test. DNA was extracted by magnetic bead selection. RHD 1227G>A mutation was detected by melting curve analysis. All RHD exons were sequenced by Sanger sequencing. 【Results】 Among 355 serologically RhD-negative blood donors, 55 (15.5%) were identified as Del and the remaining 300 cases (84.5%) were true RhD negative. Ccee (45/55, 81.8%) was the predominant Rh phenotype among 55 Del cases while ccee (210/300, 70.0%) was the most prevalent Rh phenotypes in 300 true RhD negative cases. In 55 Del cases, 51 (92.7%) had RHD 1227G>A mutation, and the other 4 cases(7.3%) had mutations in other sites. 【Conclusion】 The frequency of Del was 15.5% in serologically RhD-negative blood donors in Dalian, with Ccee being the most prevalent Rh phenotype and RHD 1227G>A the most common gene mutation.
RESUMO
Objective To systematically uncover the correlation between the expression level of long chain non coding RNA(LncRNA)and the prognosis of bladder cancer patients Methods Databases including PubMed,Web of Science,and China National Knowledge Infrastructure(CNKI)were searched for relevant literatures about the the correlation between the expression level of LncRNAs and the prognosis of bladder cancer.After data were extracted,a Meta-analysis was performed using STATA12.0 software.Results A to-tal of 7 eligible studies including 722 cases were acquired from the databases that met the inclusion criteria. The Meta analysis showed that high expression of LncRNAs is associated with a shorter life period in patients with bladder cancer(HR=2.23,95% CI:1.64 -3.04,P<0.01).Conclusion The high expression of LncR-NAs has a certain relationship with the poor prognosis of bladder cancer and is expected to be a potential bio-logical target for predicting the prognosis of bladder cancer.