Objective To identify the targeted-regulating relationship between human MicroRNA335 (hsa-miR-335 )and CCL1 1,CCL26 and SOX4.Methods The potential fragments of hsa-miR-335 target genes CCL1 1,CCL26 and SOX4 were predicted by the bioinformatics analyzing tools online.The 3′untranslated regions(3′UTR)of the CCL1 1,CCL26 and SOX4 were connected to the eukaryotic expression vectors pMIR REPORT.The constructs of pMIR-REPORT-CCL1 13′UTR,pMIR-REPORT-CCL26 3′UTR,pMIR-REPORT-SOX4 3′UTR and positive control were co-transfected with Pre-miRTM miRNA335 Precursor or negative control into 293 T7/1 7 cell line by lipofectamine 2000,respectively.Both Firefly and Renilla luciferase activity were detected by dual luciferase reporter assay system.Results Compared with the negative control group,luciferase assay revealed that has-miR-335 could significantly diminish luciferase activity from SOX4 reporter vector (P <0.01 ),while the suppression of luciferase activity was not found in CCL1 1 or CCL26 reporter vector (P >0.05).Conclusion The results suggested that hsa-miR-335 targeted regu-lated SOX4,but not targeted CCL1 1 and CCL26.

Corin is a kind of type II transmembrane serine protease.Recently, its application in cardiovascular field like hypertension, heart failure, coronary heart disease (CHD) etc.have received more and more attention.The present article made following review on research progress of Corin in cardiovascular field.

Corticosteroids,anti-vascular endothelial growth factor,antibiotics and antiviral were the main 4 classes of drugs for intravitreal injection.Depending on the class and volume of medication,age and gender of patients,ocular axial lengths or vitreous humour reflux,intraocular pressure (IOP) can be elevated transiently or persistently after intravitreal injection.Transient IOP elevation occurred in 2 weeks after intravitreal injection,and can be reduced to normal level for most patients.Only a small portion of such patients have very high IOP and need intervention measures such as anterior chamber puncture or lowering intraocular pressure by drugs.Long term IOP elevation is refers to persistent IOP increase after 2 weeks after intravitreal injection,and cause optic nerve irreversible damage and decline in the visual function of patients.Thus drug or surgical intervention need to be considered for those patients with high and long period of elevated IOP.Large-scale multicenter clinical trials need to be performed to evaluate the roles of the drug and patients factors for IOP of post-intravitreal injection,and to determine if it is necessary and how to use methods reducing IOP before intravitreal injection.

Objective To evaluate the profile of transient ischemic attacks in younger patients compared with older patients effectively.Methods We study 75 younger patients(≤45 years)compared with 90 older patients(≥65 years).History of presenting transient ischemic attacks,etiology,clinical feature and lab investigation were compared on the basis of the above age groups.Results Overweight、hypercholesterolemia、insomnia and vascular disease family history being more common in the younger group and Hypertension,ischemic heart disease,long-term history of smoking being more common in the elder group.Diabetes and high serum uric acid occurred high frequently in both groups.Conclusion A significant correlation existed between etiologies contribution and adverse life custom,the early management should be take up to prevent TIA occurrence.

Objective To investigate the efficacy and safety of intravitreal ranibizumab and (or) triamcinolone combined with laser photocoagulation for macular edema secondary to branch retinal vein occlusion (BRVO) during one year period.Methods The data of 31 eyes from 31 consecutive patients with macular edema secondary to BRVO during one year follow-up visit were retrospectively analyzed.Mean best corrected visual acuity (BCVA) logMAR was (0.74±0.36) and mean central retinal thickness (CRT) was (484.48± 164.81) μm at baseline.All patients received standardized clinical comprehensive examinations including vision,intraocular pressure and optical coherence tomography for diagnosis before treatment.All patients received intravitreal injections of 0.5 mg ranibizumab (0.05 ml) at first visit.The continue PRN treatment were based on the visual acuity changes and the optical coherence tomography findings.Eyes received combined triamcinolone acetonide 0.05 ml (40 mg/ml) and ranibizumab for macular edema recurrence after two injections of ranibizumab and received laser photocoagulation during 10-14 days after third injections of ranibizumab.Mean injection of ranibizumab was 3.52± 2.01,15 eyes with triamcinolone acetonide (0.84 ± 1.21),21 eyes with laser photocoagulation (0.97± 0.95) and 12 eyes with three treatment.Compared the visual acuities and CRTs of the first and the last visits by statistical analysis.Results Mean visual acuity improved significantly to 0.42±0.33 logMAR (t=6.611,P=0.000).Mean improvement of visual acuity was 2.90± 3.07 lines.A gain of three or more logarithmic lines was evaluated in 20/31 eyes (64.52％) at the last visit.Mean CRT was (326.19± 117.80) μm (t=4.514,P=0.000).Mean reduction of CRT was (333.58±134.17) μm.A decrease of 100 μm of CRT was evaluated in 17/31 eyes (54.84％).No severe ocular and systematic side effect was found.Conclusion The efficacy and safety of intravitreal ranibizumab and (or) triamcinolone combined with laser photocoagulation for macular edema secondary to BRVO were assured.

Objective To evaluate the effects of different doses of dexmedetomidine on lung injury in pediatric patients undergoing open heart surgery under cardiopulmonary bypass (CPB).Methods Forty-eight pediatric patients,aged 7 months-3 yr,of ASA physical status Ⅱ or Ⅲ,scheduled for elective repair of ventricular septal defect under CPB,were randomly divided into 4 groups (n =12 each) using a random number table:control group (group C) and 3 different doses of dexmedetomidine groups (D1-3 groups).Anesthesia was induced with midazolam,fentanyl and vecuronium.The patients were endotracheally intubated and mechanically ventilated.In D1-3 groups,dexmedetomidine 0.5μg/kg (initial dose) was given over more than 10 min,followed by continuous infusion at 0.1,0.3 and 0.5 μg· kg-1 · h-1,respectively,until the end of operation.The equal volume of normal saline was given instead of dexmedetomidine in group C.Before administration (T1),and at 2,6 and 12 h after termination of CPB (T2-4),blood samples were collected for determination of plasma tumor necrosis factor-α (TNF-α),interleukin-6 (IL-6) and IL-8 concentrations and for blood gas analysis.Respiratory index (RI),oxygenation index (OI) and lung compliance (CL) were calculated.Results The plasma concentrations of TNF-α and IL-8 at T2-4 and IL-6 at T3,4 were significantly lower in D2,3 groups than in group C.Compared with group D1,the plasma concentrations of TNF-α,IL-8 and RI were significantly decreased,and OI and CL were increased at T2-4 in D2-3 groups,and the plasma IL-6 concentrations at T3,4 in group D2 and at T2-4 in group D3 were decreased.The plasma concentrations of TNF-α and IL-6 were significantly lower,while OI and CL were higher at T2,3,and the plasma concentrations of IL-8 and RI were lower at T2-4 in group D3 than in group D2.Conclusion Dexmedetomidine can reduce lung injury in pediatric patients undergoing open heart surgery under CPB and promote the lung function after CPB possibly through inhibiting inflammatory responses to CPB dosedependently.

Objective:To analyze the association between CRHR1 gene(rs1876828)polymorphism and the effect of inhaled corticosteroids(ICS)in children with bronchial asthma.Methods:A total of 60 children with moderate persistent asthma who were treated in the Department of Pediatrics of the First Affiliated Hospital of Harbin Medical University from January 2018 to June 2019 were included.The CRHR1 gene rs1876828 locus in children with asthma was detected by Sanger sequencing.The children were divided into TT genotype group(TT group) and CC genotype group(CC group)according to the different base sequences of gene loci.There were 22 cases in TT group(36.7%)and 38 cases in CC group(63.3%). Both groups were given aerosol inhalation of ICS and symptomatic treatment.Clinical symptoms and signs were observed and scored before and after treatment for 3d, 10d and 30d, and the days required for complete disappearance of symptoms and signs were recorded.Results:After 3d of treatment, clinical symptoms and signs of TT group and CC group were improved to a certain extent, but there was no statistical significant difference between two groups( P>0.05). At 10d and 30 d after treatment, the recovery of the two groups was better than that at 3d, and the improvement degree of the TT group was significantly better than that of the CC group, with statistical significance( P<0.05). The time of complete remission of symptoms and signs in TT group and CC group was(8.68±7.42)d and(16.21±7.82)d; the difference was statistically significant( P<0.01). Conclusion:There is a polymorphism of CRHR1 rs1876828 locus in children with bronchial asthma, which manifests as TT genotype and CC genotype, and CC genotype is the majority.The polymorphism of CRHR1 gene rs1876828 in asthmatic children is associated with the efficacy of ICS.The efficacy of ICS in children with TT genotype is better than that of CC genotype.

In this article we report the results on the synthesis and accumulation of PHAs by Rhodocista pekingensis (strain 3-p), a phototroph that was isolated from wastewater treatment plant. Our results showed that the optimal conditions for PHAs accumulation with strain 3-p were as following: 0.01% Yeast Extract, 0.01% NH 4Cl, Acetate 5 g/L, and medium pH of 7.0～7.2.Under optimized conditions, strain 3-p accumulated PHAs up to 60% of its cellular dry weight. Enzymatic activities of ?-ketothiolase, acetoacetyl-CoA reductase, and PHA polymerase were detected and their activities increased as PHA synthesis initialized. Based on these study, we proposed the metabolic pathway of this strain should be:Acetate (or other fatty acids) - Acetyl-CoA --- thiolase Acetoacetyl-CoA --- reductase D (-)-?-Hydroxybutyryl-CoA ----- PHA polymerase PHAs.

Objective To explore the efficacy of bismuth containing quadruple therapy in the treatment of peptic ulcer in patients with Helicobacter pylori.Methods We selected 307 peptic ulcer patients with Helicobacter pylori.infection,and randomly divided them into observation group (152 cases)and control group (155 cases).The observation group received quadruple therapy:colloidal bismuth pectin,pantoprazole,amoxicillin and furazolidone, 14d.The control group received the standard triple therapy:pantoprazole,clarithromycin and amoxicillin,14d.The ulcer healing rate,H.pylori eradication rate and adverse reaction were compared between the two groups.Results The ulcer healing rates,remission rates,H.pylori eradication rates in the observation group were 93.5%,92.7%, 94.8%,92.3% respectively,which in the control group were 83.4%,82.7%,84.1%,80.6% respectively,there were statistically significant differences (χ2 =4.15,4.9,6,0.94,all P <0.05).The incidence of adverse reactions did not differ significantly between the two groups (P >0.05).Conclusion Bismuth containing quadruple therapy is associated with a higher rate of H.pylori eradication compared with the standard triple therapy.

Objective To investigate the histological changes of rapid tooth movement in dogs treated by resistance reduction and distraction osteogenesis, aiming to establish an animal model and further to reveal the remodeling mechanism of rapid tooth movement. Methods A total of 8 local hybrid dogs were selected as subjects for this study. The second pre-molar was extracted on both sides. The experimental side underwent alvelor surgery for resistance reduction and a home-made tooth-borne intraoral distraction device was installed for rapid tooth movement, while for the other side (control side) only tooth-borne intraoral distraction device was used for rapid tooth movement. The longest active force-delivery span was 2 weeks, followed by 6-week retention. The distance between the moved tooth and anchor unit was recorded weekly, and radiography was performed for each side before and after distraction. The surrounding tissues including periodontal ligament and alveolar bone were sectioned for histological analysis. Results The average distance of tooth movement was 3.55mm on the experimental side and 1.11mm on the control side. The rate of tooth movement was notably higher (P<0.01) and no significant apical root resorption was detected by X-ray on the experimental side. The active alvelor bone remodeling was found on the tension and pressure sides. However, there was no significant difference between the experimental side and the control side after the retention period. Conclusion The rate of orthodontic tooth movement can be accelerated through resistance reduction and periodontal distraction without any unfavorable effects but at minimal anchorage loss.