Objective To investigate the current status about the application of alteplase (rt-PA) for intravenous thrombolysis in acute ischemic stroke patients,and clarify the relevant factors affecting patients'compliance of intravenous thrombolysis.Methods The acute ischemic stroke patients admitted in Department of Emergency,from January 2014 to December 2015 were recruited for study prospectively.After the patients with contraindications of thrombolysis were excluded,the eligible patients were divided into two groups,intravenous thrombolysis group (ITG) and non-intravenous thrombolysis group (NTG).Receiver operating characteristic curve (ROC) was used to determine the optimal cutoff point and the crucial NIHSS score of patients for decision on thrombolysis therapy.Results There were 230 patients with acute ischemic stroke occurred in the period of two years.Of 189 eligible patients,33 refused the intravenous thrombolysis treatment (NTG) whereas 156 willing to take the intravenous thrombolysis treatment (ITG).The intravenous thrombolysis rate of eligible ischemic stroke patients reached to Henan Provincial People's Hospital within the time window (4.5 hours) was 67.8％ without contraindications.The results of the single-factor analysis for the patients of the two groups displayed that the differences in factors including age,baseline NIHSS score,limb weakness,hemiplegic paralysis,dysphasia,as well as dizziness were significant between two groups (t =2.578,P =0.047;U =157.221,P =0.000;x2 =26.702,P =0.000;x2=9.069,P =0.003;x2 =7.381,P =0.007;x2 =28.636,P =0.000).The ROC analysis demonstrated the relationship between the baseline NIHSS score and the patients receiving intravenous thrombolysis.When NIHSS score ＜ 7,patients tended to refuse the treatment with intravenous thrombolysis (sensitivity 0.87,specificity 0.82).Among the patients receiving intravenous thrombolysis,the significant differences in intracranial hemorrhage rate,hospitalization mortality rate and 3-month mortality rate were not found between the patients with baseline NIHSS score≥7 and score ＜7 (1.9％ vs.3.9％,P =0.662;1.9％ vs.7.8％,P =0.168 and 3.8％ vs.11.7％,P =0.142,respectively).However a higher rate of favorable prognosis (3-month modified Rankin Scale score ≤ 1) was observed in thrombolysis patients (75.5％ vs.41.7％,P =0.000).Conclusions Factors such as age,baseline NIHSS score,limb weakness,hemiplegic paralysis,dysphasia,as well as dizziness are supposed to be associated with patients' compliance of intravenous thrombolysis.

ObjectiveTo identify and confirm a novel HLA allele in a Chinese individual.MethodsA new HLA allele was found during routine HLA genotyping by polymerase chain reaction-sequence specific oligonucleotide probes (PCR-SSOP) and sequencing-based typing (SBT).ResultsThe new sequence differs from HLA-B * 40:01:01 by two nucleotide substitutions in exon 2 at positions 103 (G＞T) and 106 (A＞G) ; These mutations result in two codon changes:at codon 35 (GCC＞TCC) where an alanine (A) is substituted by a serine(S) and at codon 36(ATG＞GTG) where a methionine(M) is substituted by a valine (V).ConclusionA novel HLA allele,HLA-B * 40:74,was identified,and was named officially by the WHO Nomenclature Committee (HWS10004518 - EF458488).

Objective To investigate whether there are correlation among changes of Treg/Th17 ratio with virological response and serological re?sponse in patients with hepatitis B e antigen(HBeAg)?positive chronic hepatitis B(CHB)after receiving entecavir. Methods 27 patients with HBeAg?positive CHB were enrolled for the study. Peripheral blood Treg cell frequency and Th17 cell frequency,HBV DNA,alanine aminotransfer?ase levels,hepatitis B virus marker were detected before and after entecavir treatment at 4,12,24,36,and 48 weeks. Peripheral blood Treg cell frequency and Th17 cell frequency of 20 healthy volunteers were detected as well. Results Treg/Th17 ratio of patients decreased from 4 week and reached the lowest point at 12 weeks. Treg/Th17 ratio(12 weeks)of the patients who got the early virological response and HBeAg disappeared was lower than others,and the difference was statistical significant. Conclusion Treg/Th17 ratio changes in HBeAg?positive CHB patients receiv?ing entecavir antiviral treatment. Treg/Th17 ratio(12 weeks)showed significant correlation with early virological response and HBeAg disappear?ance. The changes of Treg/Th17 ratio may provide a reference of curative effect.

Objective To discuss the safety of inhaled nitric oxide (iNO)for bronchopulmonary dysplasia (BPD).Methods We analysed 65newborns diagnosed as BPD from January 2012to December 2013in Maternal and Child Health Hospital of the Guangxi Zhuang Autonomous Region.They were divided into iNO group(n=35)and control group(n=30)according to whether administering iNO or not.The heart rate,blood pressure,oxygen supply time,assisted ventilation time,hospital stay,concentration of NO2 and methemoglobin,and the changes of coagulation function were observed dynamically before and after iNO treatment.Results There were significant differences in oxygen supply time[(37±9)d vs.(55±7)d], assisted ventilation time[(29±7)d vs.(35±9)d],hospital stay [(45±9)d vs.(54±7)d]between iNO group and control group(P﹤0.05).There were no obvious changes in heart rate,blood pressure and co-agulation function before and after iNO treatment(P﹥0.05).The incidences of the complications had no sig-nificant differences between the two groups (P﹥0.05).Conclusion Long-time iNO can shorten oxygen therapy time and assisted ventilation time,iNO therapy in BPD doesn′t found serious adverse effect to cardio-vascular function as well as coagulation function,and doesn′t increase the risk of intracranial hemorrhage and retinopathy of prematurity.

To compare the difference in tumor immunity and autoimmunity elicited by adenovirus (Ad) encoding human or murine tyrosinase-related protein 2 (AdhTRP2 or AdmTRP2), and to find the most effective way to induce immunity by AdhTRP2 or AdmTRP2, C57BL/6 mice were immunized with AdhTRP2 or AdmTRP2 intramuscularly at different doses of 10(5), 10(6), 10(7) and 10(8) separately (10 mice for each dose). Two weeks after the immunization, in vivo CTL assay and intracellular staining (ICS) of IFN-gamma were carried out to analyze the dose-effect relationship. Tumor growth and vitiligo (as an sign of autoimmunity) were observed until 3 months after challenge with 10(5) B16F10 tumor cells. The results showed that Ad encoding AdmTrp2 induced weak tumor immune response. Similar immunization with AdhTrp-2 elicited stronger protective immunity. CTL activity and IFN-gamma-produced CD8+T cells were directly proportional to dose of AdhTrp2 or AdmTrp2. Moreover, AdhTrp2 group showed tumor rejection in 100% of challenged mice till the end of 3rd month while 60% of mice immunized with AdmTrp2 were protected against tumor. In the whole process of this experiment, no vitiligo was observed in mice immunized either with AdhTrp2 or AdmTrp2. It is concluded that anti-melanoma responses induced by genetic vaccination expressing xenoantigens breaks immune tolerance effectively and is able to elicit strong antigen-specific cytotoxic T cell response without vitiligo.
Adenoviridae/metabolism ; Antineoplastic Agents/*pharmacology ; Cell Line, Tumor ; Cytokines/metabolism ; Immune System ; Immune Tolerance ; Interferon-gamma/metabolism ; Intramolecular Oxidoreductases/*biosynthesis ; Intramolecular Oxidoreductases/*genetics ; Mice, Inbred C57BL ; T-Lymphocytes, Cytotoxic/*metabolism ; Vitiligo/*metabolism

The expression of CD(8) (+)CD(25) (+)FoxP(3) (+) regulatory T cells (CD(8) (+)Tregs) in the peripheral blood of patients with stable chronic obstructive pulmonary disease (COPD), and the effect of muscarinic cholinergic receptor antagonist tiotropium bromide on the expression of CD(8) (+)Tregs were investigated. Twenty-three patients with moderate to severe stable COPD were enrolled in this study. All patients inhaled tiotropium bromide (18 μg daily) for 3 months. Before and after inhalation of tiotropium bromide, peripheral blood samples were collected from the patients, and T cells were labeled by three-color labeled monoclonal antibodies. Flow cytometry was used to detect the quantity and percentage of CD(8) (+)T cells, CD(8) (+)CD(25) (+)T cells, CD(8) (+)Tregs, CD(4) (+)T cells, CD(4) (+)CD(25) (+)T cells and CD(4) (+)CD(25) (+)FoxP(3) (+) regulatory T cells (CD(4) (+)Tregs) respectively. The percentage of CD(4) (+)T cells was increased from (27.82±2.18)% to (35.53±1.3)% (t=3.20, P=0.004) in the peripheral blood of patients with stable COPD after inhalation of tiotropium bromide for 3 months, that of CD(4) (+)CD(25) (+)T cells was decreased from (10.03 ±1.42)% to (4.21 ±0.65)% (t=3.78, P=0.001), and that of CD(8) (+)Tregs was increased from (8.41 ±1.68)% to (21.34 ±4.20)% (t=2.72, P=0.013). At baseline, CD(8) (+)T cells, CD(8) (+)CD(25) (+)T cells and CD(4) (+)Tregs were detectable in the peripheral blood, but no significant changes were observed after treatment. Linear correlation analysis revealed that the difference before and after treatment in CD(4) (+)T cells and CD(4) (+)CD(25) (+)T cells was negatively correlated with the ratio of change in CD(8) (+)Tregs before and after treatment (r=-0.61, P=0.013; r=-0.72, P=0.001 respectively). In the peripheral blood of patients with stable COPD, there was the expression of CD(8) (+)Tregs and CD(4) (+)Tregs. Muscarinic receptor antagonist, tiotropium bromide, can promote the amplification of CD(4) (+)T cells, inhibit the expression of CD(25) (+)T cells, and enhance the expression of CD(8) (+)Tregs. CD(8) (+)Tregs and CD(4) (+)Tregs can be used as new indicators to understand the immune status of patients. They are helpful in judging the treatment efficacy and disease immunophenotype.

目的探索脑瘫患儿早期发现、早期干预的工作模式。方法临床、保健、康复相结合 ,采用产前检查、孕妇学校、产时儿科医生进产房、新生儿行为神经评定测定、高危儿抚触训练室、婴儿期儿童保健监测、各街道防治站常规体检筛查转诊等多种形式结合早期发现并干预脑瘫高危儿。结果此工作模式较模式前显著提高了脑瘫的早期诊断率及康复疗效。结论临床、保健、康复相结合的方式整合了医疗资源,起到了促进脑瘫早发现、早诊断、早治疗的作用 ,值得推广。

OBJECTIVETo identify a novel human leukocyte antigen (HLA) A allele.

METHODSA new HLA-A allele was found during routine HLA genotyping by polymerase chain reaction-sequence specific oligonucleotide probes (PCR-SSOP) and sequencing-based typing (SBT).

RESULTSThe novel HLA-A*30 allele was identical to A*300101 except that a nucleotide C at position 294 of exon 2 is substituted by A, resulting in codon 98 changed from GAC (D) to GAA (E).

CONCLUSIONA new HLA allele, HLA-A*3020, was identified, and was named officially by the WHO Nomenclature Committee.

Alleles ; Base Sequence ; HLA-A Antigens ; chemistry ; genetics ; Humans ; Molecular Sequence Data ; Sequence Alignment ; Sequence Analysis, DNA

OBJECTIVEA novel human leukocyte antigen-B (HLA-B) allele, B*9526, was identified and analyzed by sequencing-based method in a Chinese donor.

METHODSHLA typing was performed by PCR-sequence-specific oligonucleotide (SSO). Molecular cloning and DNA sequencing were used to identify the sequence of the potential novel allele and the difference between this new allele and other known alleles were analyzed.

RESULTSHLA genotyping of one sample gave different results. The sequencing result showed HLA-B alleles of the proband as B*5403 and a novel allele. The nucleotide sequence of the novel allele was different from all known B alleles and harbored one nucleotide change from the closest matching allele B*1507 at nucleotide 425 (A to G) in exon 3, resulting in an amino acid change from Y (TAC) to C (TGC) at codon 142.

CONCLUSIONA novel HLA allele was identified and officially designated as HLA-B*9526 by WHO Nomenclature Committee for Factors of the HLA System.

Alleles ; Amino Acid Sequence ; Base Sequence ; China ; Cloning, Molecular ; Genotype ; HLA-B Antigens ; genetics ; HLA-B15 Antigen ; Humans ; Male ; Molecular Sequence Data ; Sequence Analysis, DNA

Objective To establish the quality standards for salt eucommia dispensing granules. Methods The extractives were obtained by alcohol extraction method. HPLC was applied for the determination of pinoresinol diglucoside in dispensing granules. HPLC fingerprints were established by the contrast of Agilent 1260 HPLC, Waters HPLC and various chromatogram column. Results Pinoresinol diglucoside showed a good linear relationship ( Y = 2. 9594X + 3. 2825,R2 =0.9999) at 102.8-2056.0 mg?L-1 with average recovery of 99.85％ (RSD = 0.31％,n = 9). Conclusion The method is easy-operated and accurate,which has a good specificity for the quality control of common salt eucommia dispensing granules.