Objective To analyzed distribution characteristics of gene mutation and gene carrying rate of thalassaemia in Shenzhen.Methods 2 500 cases with adult,neonatal umbilical cord blood of 2 500 cases for alpha thalassaemia,beta thalas-saemia,gene types and carry frequency were analyzed.Results 8 types of alpha thalassemia gene 128 cases,rate of detection was 5.12% (128/2 500),and the main genetic types were-SEA/αα(54 cases,42.19%),-SEA/-α3.7 (32 cases,25%)respec-tively.2 500 cases of adult samples were checked out 7 types of gene mutation 101 cases,and detection rate was 4.04%(101/2 500).Main gene mutation type were CD41-42 (39 cases,38.61%),IVS-2-654 (20,21 cases,79%),CD17 (18 cases, 17.82%)and-28 (13 cases,12.87%)respectively.Conclusion Shenzhen thalassaemia mutation type and frequency had ob-vious regional characteristics and times characteristics,health authorities should strengthen epidemiology study,formulate corresponding prevention and intervention measures.

Objective:To study influencing factors for in‐stent restenosis (ISR) during one year in patients with coro‐nary heart disease (CHD) after coronary sirolimus‐eluting stent (SES) implantation .Methods :According to results of coronary angiography (CAG) ,a total of 275 patients ,who hospitalized in our department from Jan 1st ,2012 to Dec 30th ,2013 and have received SES implantation and reviewed CAG after one year ,were divided into non‐ ISR group (n=247) and ISR group (n=38) .Clinical characteristics were compared between two groups ,and Logistic regression analysis was used to analyze influencing factors for ISR .Results:Compared with non‐ISR group ,there were significant rise in percentages of occlusion lesions (17. 9% vs .31. 9% ) ,multiple overlapping stents (16. 7% vs . 31.9% ) ,and significant reduction in percentage of stent post‐dilatation (34.9% vs .10.6% ) in ISR group ,P<0.05 or <0. 01 ;Logistic regression analysis indicated that coronary occlusion lesion was a risk factor (OR :2. 855 ,95%CI :1.197~6.808 ,P=0.018) ,and post‐dilatation was a protective factor (OR :0.198 ,95% CI :0.057~0.691 , P=0.011) for ISR occurrence .Conclusion:Multiple overlapping stents and coronary occlusion lesions increase one‐year in‐stent restenosis rate ;stent post‐dilatation can reduce one‐year in‐stent restenosis rate ;coronary occlusion le‐sions is a risk factor , and stent post‐dilatation is a protective factor for restenosis during one‐year after coronary drug‐eluting stent implantation .

Objective To analysis the human T lymphotropic virus (HTLV) infection status in Wenzhou among voluntaty blood donors.Methods Selected 72 417 voluntary blood donors of Wenzhou from from March,1,2016,to November,30,2016,to screen HTLV-Ⅰ / Ⅱ antibody by ELISA method.The positive samples were reexamined two times,two test results of samples were determined positive by ELISA.HTLV positive samples was confiemed by Western Blotting (WB).Results Screened 23 cases of anti-HTLV positive by ELISA method,then confirmed 9 cases of HTLV positive by Western Blotting (WB).HTLV infection rate of Wenzhou blood donors was 0.01％ (9/72 417).Conclusions HTLV infection was found among volunteer blood donors in Wenzhou,but the HTLV infection rate of volunteer blood donors in Wenzhou is still at a relatively low level.

Objective To detectthe phenotype and gene mutations underlying aninherited dysplasminogenemia pedigree and search the virulence gene.Methods The peripheral venous blood samples of the proband and his family members (fourteen subjects of three generations in total) were collected,and their prothrombin time(PT),activated partial thromboplastin time(APTF),thrombin time(TT),fibrinogen (FIB),fibrinogen degradation products (FDP),D-dimmer (D-D)weretested on a STAGO analyzer,the plasminogen activity (PLG:A) and plasminogen antigen (PLG:Ag) were analyzedby thechromogenic substrate assay and rocket immunoelectrophoresis,respectively.All 19 exons,5' and 3' untranslated regions of PLGwere amplified with PCR.Direct DNA sequencing was used to analyze the amplified products,which wereconfirmed by backward sequencing.Three bioinformatics online softwares (SIFT,PolyPhen-2 andMutationTaster) were used to forecast the possible impact of the mutations on the protein function.At last,themodel analysis of mutate site was taken on a Swiss-Pdb Viewer software.Results The PLG:Avalue of theproband and other 6 family members were decreased to the half,while the PLG:Ag was normal.The D-Dand FDP value of the proband,his grandma and father were slightly higher.DNA sequencing has revealedthat the proband and the other 6 members of this family had the same mutation of g.38829G ＞ A in exon 15,leading to the missense mutationp.Ala601Thr.The results of bioinformatics softwares showed that themutation could affect the thePLGfunction.Protein model analysis indicated that the hydrophobic interaction force and hydrogen bond between the amino acids were changed,which might affect the stability of the PLG.In addition,all the members of this family take the heterozygous SNP of g.2501C ＞ A in the 5 ＇UTR.Conclusions The p.Ala601Thr found in the inherited dysplasminogenemia pedigree in the exon 15 was responsible for the reduced PLG:A of the family,the dysplasminogenemia and this mutation were both reported for the first time in China.

Objective To investigate the effect of cytokines on pancreatic function in patients after acute pancreatitis(AP) and its mechanisms. Methods Fifty-nine patients (mild in 25 and severe in 34) after AP and 20 healthy controls were enrolled in the study. Serum levels of cytokines including hepatocyte growth factor (HGF), epidermal growth factor(EGF), basic fibroblast growth factor (bFGF), regeneration protein(Reg)-1 and Reg-4 were determined using enzyme-linked immunosorbent assay (ELISA). Fasting blood-glucose, insulin, C-peptide and fecal elastase 1 (FE1) were detected for evluation of endocrine and exocrine pancreatic function. The association of pancreatic function with clinical parameters and serum cytokines was analyzed. Results The expression of FE1 was lower in patients [(205.9±18.3) μg/g] after AP in comparison with the controls [(333.9±19.7) μg/g, P<0. 01], but levels of fasting blood-glucose, C-peptide and insulin were higher in patients group (P<0.01). Serum level of HGF was higher in patients with insufficient pancreatic exoerine [(983.76±372.65) pg/ml] than those with normal exocrine function [(263.44±110. 35) pg/ml]. Meanwhile,EGF level was higher in patients with DM after AP [(704.41±190. 37) pg/ml] than those without DM [(360. 03±48.39) pg/mh P<0.05]. There was a negatively correlation between FE1 and HGF (P ＜0. 01). The abnormal fasting blood glucose was correlated with CT grading (P<0. 05).Conclusions The patients after AP develope insufficient exocrine and endocrine function. Serum EGF and HGF may be associated with restoration of pancreatic endocrine and exocrine function.

OBJECTIVETo examine the prevalence and the sequence of the genes of new genotypes of hepatitis G virus (HGV) in Guangxi, China.

METHODSSerum samples were collected from 85 intravenous drug abusers (IVDAs), 80 patients with liver diseases (PLDs) and 50 blood donors (BDs). All sera (n=215) were tested by using EIA for HBsAg, anti-HCV and anti-HIV, and by using nested PCR for HGV RNA. In 62 subjects positive for HGV, HGV RNA was sequenced, and a phylogenetic tree was constructed for analyzing genotypes of HGV.

RESULTSHGV RNA was detected in 85 of 215 serum samples (39.53%). The positivity rates for HBsAg, anti-HCV and anti-HIV were 39.07%, 42.79% and 0, respectively. First, 11 nucleotide sequences were determined and the isolates were grouped into three clusters with HGV. 5 of 11 HGV isolates clustered in a distinct phylogenetic branch (genotype Asia) which was different from the described GBV-C and HGV sequences, suggesting the presence of a new genotype of HGV in this locality. Second, 51 nucleotide sequences were determined and analyzed for their genotypes of HGV, and showed genotype GBV-C (3.23%), genotype HGV 30-65% and new genotype (genotype Asia) 64.51%, respectively.

CONCLUSIONSThere were subgenotypes in 3 genotypes of HGV; The predominant genotypes of HGV were genotype Asia and genotype HGV among IVDAs, PLDs, and BDs patients in Guangxi, China.

Adult ; Blood Donors ; China ; epidemiology ; Female ; GB virus C ; genetics ; isolation & purification ; Genotype ; Hepatitis C ; epidemiology ; Humans ; Liver Diseases ; virology ; Male ; Polymerase Chain Reaction ; RNA, Viral ; genetics ; Sequence Analysis, RNA ; Substance Abuse, Intravenous ; virology

BACKGROUNDTo observe the protective effect of hepatitis E virus (HEV) ORF2 recombinant protein expressed in prokaryote cell cynomolgus macaques (cynos) against challenging with wild-type HEV.

METHODSCynos were immunized with HEV ORF2 recombinant protein and then challenged with wild-type HEV, the unimmunized cynos were used as control. Blood samples were collected and tested to see if there were dynamic changes of ALT and antibody to HEV before and after challenge with wild-type HEV.

RESULTSAll the five unimmunized cynos re-presented hepatitis 3 weeks after challenging with wild-type HEV. However, all the five immunized cynos showed no hepatitis and pathological changes.

CONCLUSIONSCynos can be efficiently protected by immunization with HEV ORF2 recombinant protein against wild-type HEV. This protein can be a promising candidate for HEV vaccine.

Animals ; Female ; Hepatitis Antibodies ; blood ; Hepatitis E ; immunology ; prevention & control ; Hepatitis E virus ; immunology ; Macaca mulatta ; Male ; Recombinant Proteins ; immunology ; Viral Proteins ; immunology

Objective: Through a retrospective analysis of serology and nucleic acid screening data of unpaid blood donors in south Zhejiang region, the role of nucleic acid detection in the reduction of transfusion-related infectious diseases was discussed. Methods: 179 369 unpaid blood donation in south Zhejiong province from Jan, 2016 to Dec, 2016 was chosen. Enzyme linked immunosorbent (ELISA) test for blood index of infectious hepatitis B virus surface antigen (HBsAg), hepatitis C virus antibody (anti-HCV), human immunodeficiency virus antigen and antibody. At the same time the roche, haoyuan nucleic acid detection system were used for HBV-DNA, HCV-RNA, HIV-RNA in 6 or 8 doses mix samples three projects joint detection.NAT results of the serum with negative results in the serological tests were made statisticala analysis. Results: A total of 259 ELISA-/NAT+ samples were detected, HBV-DNA+ 255 cases, HCV-RNA+ 5 cases, one case of HBV-DNA and HCV-RNA + , with a positive rate of 0.14%. The analysis system of roche nucleic acid mix inspection rate of positive was 1.40%, and the split inspection rate of positive was 60.72%. The mix inspection positive rate of the haoyuan analysis system was 1.63%, and the split inspection rate of positive was 41.67%. Conclusions The detection of nucleic acid can make up the deficiency of serological test, and effectively reduce the leakage of transfusion-related infectious diseases, and ensuring the blood safety in this area.

Objective: To analyze the epidemiological characteristics of HIV/AIDS infected students in Shandong Province, to provide a basis for the prevention and control of AIDS transmission in the student population. Methods: All 863 HIV/AIDS students cases during 2010-2019 were collected in Shandong Province. Epidemiological characteristics was described and the trends in the 10 years since 2010 was analyzed. Results: These 863 HIV/AIDS students were mainly transmitted through homosexual sex (763 cases, 88.41%), and the samples were mainly from voluntary consultation testing (433 cases, 50.17%). From 2010 to 2019, the proportion of student cases in the total number of cases showed an increasing trend ( χ 2 trend =30.21, P <0.01). Among them, the proportion of homosexual transmission cases increased year by year ( χ 2 trend =6.35, P =0.01), the proportion of cases aged 18-22 years increased year by year ( χ 2 trend =6.10, P =0.01), the proportion of cases with college degree or above increased year by year ( χ 2 trend =4.26, P =0.04). At present, voluntary consultation testing were the main source.There was no significant difference between the years of sample sources ( χ 2 trend =2.97, P =0.09). Conclusion The report number of students in Shandong Province are on the rise in recent years, especially those infected by same sex transmission, mainly with high education background, which calls for targeted strategies and intervention measures.

Objective To investigate the possible presence of radiation brain injury (RBI) in vascular injury and blood-brain barrier (BBB) damage.Methods Seventy 8 weeks old male BALB/C mice were randomly divided into irradiation group and control group;mice in the two groups received whole-brain exposure with a single dose of 10 Gy irradiation or sham irradiation.Tissue samples were taken 1,7,30,90 and 180 days after irradiation (7 mice in each time point per group);HE staining was used to observe the microvascular morphology and density changes;immune-fluorescence staining was used to visualize the differential expressions of factor Ⅷ related antigen (vWF) and zonulaoccludens-1 (ZO-1).Results Micro-vascular disorders began to appear from the first day of irradiation,deteriorating with time extension gradually.After the X-ray irradiation exposure,the protein expressions of vWF and ZO-1 in the irradiation group were significantly decreased as compared with those in the control group 1,7,30,90 and 180 days after irradiation (vWF:23.17±2.93 vs 15.80±2.39,21.25±2.33 vs 11.60±2.3,19.78±2.16 vs 8.20±1.64,17.21±3.31 vs 6.00±2.12 and 16.98±1.92 vs 3.80±2.59;ZO1:26.17±3.31 vs 15.40±1.82,23.20±2.93 vs 12.00±1.58,20.88±2.20 vs 9.10±2.55,18.32±1.87 vs 6.20±1.92 and 17.50±1.91 vs 2.40±1.52,P＜0.05);besides,the decreased expression ofvWF and ZO-1 in the irradiation group showed a time-depended manner,with significant differences between each two time points (P＜0.05).Conclusion X-rays may induce persistent micro-vascular injury and destroyed BBB tight junctions,which may be closely related to the occurrence and development of RBI.