Objective To observe the effects of human retinal pigment epithelium conditioned medium(HRPE-CM) on the biological characteristics of human retinal stem cells(HRSCs). Methods HRSCs were exposed to HRPE-CM and cultivated in three different cultures,including the control,epidermal growth factor(EGF) + basic fibroblast growth factor(bFGF) and HRPE-CM.Cell counting was performed to explore the effects of different culture media on the proliferation of HRSCs,and their properties as neural stem cells were further identified. Results Compared with control group,HRPE-CM significantly promoted the proliferation of HRSCs(P

To reveal the colonization characteristics in host of endophytic biocontrol bacteria NJ13 isolated from Panax ginseng, this study obtained the marked strain NJ13-R which was double antibiotic resistant to rifampicin and streptomycin through enhancing the method of inducing antibiotic. The colonization characteristics in ginseng and its biocontrol efficiency against Alternaria spot of ginseng in the field were studied. The results showed that the strain could colonize in root, stem and leaf of ginseng and the colonization amount was positive correlated with inoculation concentration. Meanwhile, the strain could infect and then transfer in different tissues of ginseng The colonization amount of strain in roots and leaves of ginseng increased first and then decreased. However, the tendency of colonization amount of strain in stems was ascend at first and then descend slowly, and was more than that in roots and leaves along with time, which had a preference to specific tissue of its host. In field experiment, the endophytic bacteria NJ13 was proved to be effective in controlling Alternaria leaf spot of ginseng. The biocontrol efficiency of fermentation broth at the concentration of 0.76 x 10(8) cfu x mL(-1) reached 75.62%, which was close to the controlling level (73.06%) of 0.67 mg x L(-1) 50% cyprodinil WG.
Alternaria ; physiology ; Antibiosis ; Bacillus ; growth & development ; isolation & purification ; physiology ; Endophytes ; growth & development ; isolation & purification ; physiology ; Panax ; growth & development ; microbiology ; Plant Diseases ; microbiology

This study adopted a large sample, multicenter, registered hospital centralized monitoring nested prospective case-control study design. From the real world clinical application of Shenqi Fuzheng injection, monitored 30 026 cases of patients with the use of Shenqi Fuzheng injection. A total of 51 adverse drug reaction (ADR) cases was monitored, including 1 case of severe adverse reactions. ADR incidence rate was 1.7 per 1,000. Blood samples were collected from patients with allergic reactions and their matched controls. Related biological indicators of allergic reactions were unified detected and analysed in order to explore the mechanism of allergic reaction and promote the clinical safety.
Case-Control Studies ; Drug Hypersensitivity ; etiology ; Drugs, Chinese Herbal ; adverse effects ; Humans ; Injections ; Product Surveillance, Postmarketing ; Prospective Studies

Objective To retrospectively analyse the clinical data of off-pump coronary artery bypass grafting surgery(OPCAB)in our department and summarize the clinical experience of peri-operative management.Methods From January 2007 to May 2008,253 patients underwent OPCAB.Seventy-six cases with left main disease(including 18 cases of single left main lesion and 58 cases of complex lesion);13 cases had single vessel disease;32 cases had double vessels disease and 190 cases had triple vessels disease.Eighteen cases received emergency OPCAB.All vessel anastomosis were performed with coronary artery stablizer and shunt through median sternotomy.Resuits Three cases died after operation(1.2%).Intra-aortic balloon pump was used in 11 cases.Mechanical ventilation time was 3-168 h[(24.1±22.3)h],and ICU stay time was 1-14 day[(2.8±2.0)d].Postoperative hospital stay time was 8-42 days[(15.6±6.3)d].Conclusion OPCAB is reliable for most bypass cases.With appropilate peri-operative management,a satisfied result will be acceptable.

Objective To summarize the clinical experiences of 1386 patients undergoing off-pump coronary artery bypass grafting(OPCAB)during Jan 2002 to Mar 2008.Methods OPCAB was done through midsternumtomy under ordinary-temperature anesthesia after radial artery,left breast artery and vena saphena magna were taken.Patients over 70 years old accounted for 32.35%,and the oldest was 99 years old.Emergency and subemergency OPCAB was done in 111 cases,re-do CABG with off-pump technique was done in 52 patients.Results 24 cases died during perioperation,with mortality of 1.73%and all other patients discharged from the hospital.Following operation,the symptoms of angina pectoris were relieved and the life quality was much beaer than that before operation.Conclusion OPCAB is feasible for older patients,who are complicated with other chronic diseases for elder patients.Skillful technique of surgeon,right indications for OPCAB and management of peri-and postoperation are key to success of operation.

Objective The aim of this study is to investigate the role of angiotensin-converting enzyme (ACE)gene susceptibility to systemic lupus erythematosus(SLE)by familial studies.Methods PCR-based re- striction fragment length polymorphism(RFLP)was applied to genotype single nucleotide polymorphism(SNP) G261T of the ACE gene.A total of 119 patients with SLE from 119 families were recruited.In addition,316 family members of these patients were also genotyped.A family-based association study was carried out to ex- plore the association between gene polymorphism and SLE.We studied the SNP encoding non-synonymous substitution in the ACE gene with respect to genetic susceptibility to SLE.Results Among 119 SLE patients. the frequency of ACEG261TG,T alleles was 44.8%.55.2% respectively,the frequency of ACEG261T GG,GT and TT genotypes was 13.9%,62.0%,24.1% respectively,Univariate(single-marker)family-based association test(FBAT)demonstrated that variant alleles at the SNP,rs4303,exon 5 of ACE gene were significantly asso- ciated with genetic susceptibility to SLE in Additive Model(Z=2.877,P=0.004),Dominant Model(Z=2.557, P=0.011).Recessive Model(Z=2.202,P=0.028).Transmission-disequilibrium test(TDT)and sib transmission -disequilibrium test(STDT)showed an excess of the allele of T from heterozygous parents to affected offspring or higher frequency of the allele of T in the patients than their normal siblings(X~2=11.66,P=0.001).Conclu- sion Our findings suggest that the ACE gene may he the susceptible gene to SLE in Chinese population,and the individuals carrying ACE-261T allele is significantly associated with susceptibility to SLE.

Objective To assess the value of detecting sympathetic skin response (SSR) in the diagnosis of autonomic dysfunction in patients with Parkinson disease (PD). Methods SSR measurement was performed in 47 PD patients and 20 healthy control subjects and the results were compared. The SSR was also comparatively analyzed between patients with and those without autonomic dysfimction. Results Compared with the healthy controls, the PD patients showed significantly lowered mean amplitude (2.56±1.47 vs 1.87±0.26, P<0.05) and prolonged latency (1.42±0.29 vs 1.55± 0.18, P<0.05) of the SSR in the upper limbs, with also lowered mean amplitude (0.76±0.39 vs 0.49±0.21, P<0.05) and prolonged latency (2.04±0.27 vs 2.13±0.16, P<0.05) in the lower limbs. Compared with the PD patients without autonomic dysfunction, those having autonomic dysfunction showed significantly lowered mean amplitude (1.89±0.33 vs 1.75±0.21, P<0.05) and prolonged latency (1.53±0.15 vs 1.56±0.17, P<0.05) of SSR in the upper limbs and lowered mean amplitude (0.51±0.17 vs 0.46±0.20,P<0.05) and prolonged latency (2.08±0.24 vs 2.17±0.18, P<0.05) in the lower limbs. Conclusion The results of SSR measurements are consistent with the clinical manifestations of the PD patients. SSR can be of value in the diagnosis of autonomic nerve dysfunction in PD.

OBJECTIVETo investigate the etiologic value of diarrheagenic E. coil harboring genomic O island 28(OI-28) containing five putative virulence genes (Z0608, Z0609, Z0615, Z0634 and Z0635), which were related to RTX (Repeat in toxin) toxin family isolated from children with diarrheal disease in Taiyuan.

METHODSIn the study, 257 fecal samples from children with diarrheal disease collected in Shanxi Children's Hospital. Diarrheagenic E. coli and enteropathogenic bacteria were isolated and identified by conventional bacterial culture and typing specific diarrheagenic E. coli (EPEC, EIEC, ETEC and EHEC) diagnostic serum, while diarrheagenic E. coli harboring genomic 01-28 containing five putative virulence genes (Z0608, Z0609, Z0615, Z0634 and Z0635) were detected by PCR and DNA southern blot hybridization.

RESULTS206 strains (80.16%) of enteropathogenic bacteria were detected from 257 children with diarrhea disease, containing 149 strains (57.98%) of diarrheagenic E. coli and 57 strains(22.18%) of other entero-pathogenic bacteria. Among 3 strains (2.01%) of EPEC, 2 strains (1.34%) of ETEC, 2 strains (1.34%) EHEC were detected by typing specific serum, while all of the 142 strains (95.30%) isolated were suspected to be diarrheagenic E. coli. 21 strains (14.09%) of diarrheagenic E. coil harboring genomic O1-28 containing five putative virulence genes (Z0608, Z0609, Z0615, Z0634 and Z0635) were detected by polymerase chain reaction and DNA southen blot hybridization, 8 strains (5.37%) of diarrheagenic E. coli containing only one genomic OI-28 virulence gene, 2 strains (1.34%) of diarrheagenic E. coli containing two genomic OI-28 virulence gene. 21 children with diarrhea diseases caused OI-28-harboring E. coli containing five important putative virulence genes were among 0 to 3 years old (80.95%). These children correlating with OI-28-harboring E. coli did not present special clinical symptoms or signs.

CONCLUSIONThe diarrheagenic E. coil harboring genomic OI-28 was one of the important etiology for children with diarrheal disease in summer season.

Child ; China ; Diarrhea ; microbiology ; Escherichia coli ; genetics ; pathogenicity ; Escherichia coli Infections ; complications ; Genes, Bacterial ; Humans ; Virulence

BACKGROUNDEmergence agitation is a common problem in pediatric anesthesia, especially after sevoflurane induction and maintenance anesthesia. The purpose of this study was to investigate the effect of sufentanil to reduce emergence agitation after sevoflurane anesthesia in children undergoing adenotonsillectomy compared with fentanyl.

METHODSOne hundred and five children, aged 3 - 11 years, were randomly allocated to receive normal saline (control group), sufentanil 0.2 µg/kg (S2) or fentanyl 2 µg/kg (F2) 1 minute after loss of the eyelash reflex. Anesthesia was induced and maintained with sevoflurane. Time to tracheal extubation, recovery time, Paediatric Anesthesia Emergence Delirium (PAED) scale, and emergence behavior were assessed.

RESULTSThe incidence of severe agitation was significantly lower in S2 and F2 groups vs. the control group, 4/32 and 15/34 vs. 24/34 respectively, (P = 0.002, 0.009, respectively). PAED scales were significantly different among three groups (P = 0.007), and lower in the S2 and F2 groups than in the control group (P = 0.007 and P = 0.025, respectively). And the incidence of severe agitation and the PAED scale score was significantly different between the S2 and F2 groups (P = 0.007, P = 0.019, respectively). Time to tracheal extubation and recovery time were similar in all three groups.

CONCLUSIONSAdministration of sufentanil at 0.2 µg/kg after induction of anesthesia reduced emergence agitation in children receiving sevoflurane anesthesia for adenotonsillectomy compared with fentanyl. This was without delaying the recovery time or causing significant hypotension.

Adenoidectomy ; methods ; Anesthesia ; methods ; Child ; Child, Preschool ; Female ; Fentanyl ; therapeutic use ; Humans ; Male ; Methyl Ethers ; adverse effects ; therapeutic use ; Prospective Studies ; Psychomotor Agitation ; drug therapy ; etiology ; Sufentanil ; therapeutic use

In order to study the polymorphism of Landsteiner-Wiener (LW) blood group gene in Chinese population, peripheral blood samples anticoagulated with EDTA from 160 unrelated volunteer blood donors were randomly collected, and genomic DNA were extracted. 160 DNA samples were analyzed for exon 1 of LW gene by direct DNA sequencing, and detected for LWa/LWb allele by improved PCR-SSP genotyping. The results showed that all LW allele in 160 donors were LWa homozygous, and the LWa allele occurred commonly. In conclusion, LWa allele occurs with incidence of 100% of donors in this study, while LWb allele has not been found in Chinese population.
Alleles ; Asian Continental Ancestry Group ; genetics ; Blood Donors ; Blood Group Antigens ; genetics ; Cell Adhesion Molecules ; genetics ; Exons ; genetics ; Homozygote ; Humans ; Polymorphism, Genetic ; Sequence Analysis, DNA