Objective To systematically assess the clinical effect and safety of Poractant Alfa Injection and ambroxol hydro-chloride in treating neonatal respiratory distress syndrome (NRDS) .Methods The home and abroad randomized controlled trials ( RCTs ) on the comparison of clinical effect and safety of Poractant Alfa Injection and ambroxol hydrochloride in treating NRDS were retrieved by computer .The literature quality was evaluated by the modified JADAD scale .Rev Man5 .3 .1 software was used for conducting the meta analysis .Results Twenty-four RCT were included .The meta analysis results showed that compared with ambroxol hydrochloride ,Poractant Alfa Injection for treating NRDS could more significantly increase the PH value (MD= -0 .02 , 95% CI:-0 .03- -0 .01 ,P<0 .01) ,increased the PaO2 value(MD= -2 .92 ,95% CI:-4 .59 - -1 .26 ,P<0 .01) ,decreased the PaCO2 value (MD=0 .95 ,95% CI:0 .12-1 .77 ,P=0 .02) ,reduced the FiO2 value(MD=0 .03 ,95% CI:0 .01-0 .05 ,P<0 .01) ,en-hanced the Pa O2/FiO2 ratio (MD= -7 .62 ,95% CI:-10 .87 - -4 .37 ,P<0 .01) ,reduced the short term complications (RR=1 .67 ,95% CI:1 .31-2 .12 ,P<0 .01) and long-term complications (RR=2 .85 ,95% CI:1 .14-7 .07 ,P=0 .02) ,shortened the hos-pitalization days (RR=3 .03 ,95% CI:0 .94 -5 .11 ,P<0 .01) as well as decreased the mortality rate (RR=1 .96 ,95% CI:1 .15-3 .34 ,P=0 .01) .However ,there were no statistical differences in the durations of continuous positive airway pressure (CPAP) me-chanical ventilation ,oxygen inhalation time ,time of clinical symptom outcome ,incidence rate of NRDS and total effective rate of treatment between the two groups .Conclusion Currently published evidences show that Poractant Alfa Injection is superior to am-broxol hydrochloride in treating NRDS ,however ,due to limited number of included RCD and medium quality ,the conclusion needs large scale and multicenter RCT verification .

Objective To explore the relationship of two loci (rs2293152, rs9579700) gene polymorphisms of signal transduction and transcription factor-3 (STAT3) with susceptibility to Henoch-Scho. .nlein purpura (HSP) and HSP nephritis (HSPN). Methods From September 2013 to September 2015, 180 children with HSP (group HSP) and 205 healthy children (control group) were enrolled in this study. Single nucleotide polymorphism (SNP) of intron 11 rs2293152C/G and intron 23 rs957970C/T of STAT3 gene was detected by sequence specific primer polymerase chain reaction (SSP-PCR). Results The frequency of CC genotype in STAT3 gene intron 11 rs2293152 in HSP group (26.1％) was significantly higher than that in control group (8.8％), and the frequency of allele gene of rs2293152C in HSP group (48.6％) was significantly higher than that in control group (32.7％) (P=0.013, 0.025). There were no differences in distribution of genotype and allele in rs957970C/T loci of intron 23 of STAT3 gene between two groups (P>0.05). The frequencies of genotype and allele of the two loci of STAT3 gene were no difference between HSPN and non HSPN groups (P>0.05). Conclusions The allele gene C of intron 11 rs2293152C/G of STAT3 gene may be a susceptible gene of HSP, while there was no association of 23 rs957970C/T polymorphism to HSP and there was no association of the two loci polymorphisms to HSPN.