Objective To investigate the altered glycotransferases and glycan profile in HCV-infected cells, the expression levels of 35 kinds of sialyltransferases and galactosyltransferases were evaluated in hepatitis C virus (HCV) infected Huh7.5.1 cell cultured model.Methods Western blot was used to measure the expressions of HCV-nonstructural protein NS3 and and quantitative real-time PCR (qRT-PCR) was performed to determine HCV-RNA levels and mRNA levels of 35 kinds of sialyltransferases and galactosyltransferases.Lectin microarray was used to compare the glycan profiles of sialyltransferases-and galactosyltransferases-associated glycan-profile in Huh7.5.1 cells and HCV infected Huh7.5.1 cells.Results Among the 35 kinds of sialyltransferases and galactosyltransferases, the mRNA levels of four sialyltransferases (including ST3Gal Ⅲ, ST6GalNAC Ⅲ, ST8Sia Ⅲ and ST8SiaⅣ) and five galactosyltransferases (including B3GALT1, B3GALT 2, B3GALT3, B3GALT4 and B4GALNT2) were found to be 11-45 fold higher in HCV-infected cells compared with naive Huh7.5.1 cells.The up-regulated level of B3GALT 1 was the most evident (45-fold change), followed by ST8Sia Ⅳ and ST8Sia Ⅲ, with 39-and 37-fold respectively.Consistently, lectin microarray showed that glycans recognized by EBL (binding terminal sialic acid, Neu5Acα6Gal, 1.97-fold change), ECA letin (binding terminal galactose, Galβ1,4GalNAc,4.3-fold change), and ACA(binding terminal galactose, Galβ1-3GalNAc, 3-fold change) were elevated in glycoprotein products of sialyltransferase and galactosyltransferase respectively.Conclusion HCV infection causes the increased expression levels of mutiple sialyltransferases and galactosyltransferases in Huh7.5.1 cell line and hence the upregulation of glycan profiles of the glycoproteins.These results provide potential therapeutic targets and diagnostic markers for HCV infection and insights on the molecular mechanism of HCV infection.

Objective To investigate the influence and the clinical significance of interleukin-2 (IL-2) on T lymphocyte subgroup after chemotherapy in acute myeloid leukemia patients. Methods Fiftyfour acute myeloid leukemia patients were divided into treatment group (chemotherapy combined with IL-2,28 cases) and control group (pure chemotherapy,26 cases) by radom digits table. In treatment group, IL-2400 000 U was dripped after chemotherapy for 14 days. Then the T lymphocyte subgroup change before and after treatment was examined. Results After 14 days' treatment, the levels of CD3 (0.6026±0.2275 ),CD4(0.4972±0.1224),CD56(0.3016±0.1053 ) in treatment group were significantly higher than those before treatment(0.3926±0.2010,0.2264±0.1190,0.1729±0.1226) and in control group (0.4352±0.1930,0.2738±0.1362,0.1937±0.1268)(P< 0.05). Conclusion IL-2 treatment can obviously raise the levels of T lymphocyte subgroup and can raise the immunologic function.

OBJECTIVE To provide scientific basis for the control of hospital infection,and then the effects of nursing quality control were evaluated. METHODS There was significant difference in many targets of hospital infection. RESULTS The nursing quality control was strengthened by the following measures.The administration of hospital infection net be established,the environmental sanitation and sterilization in the medical matter be supervised,and the rules and regulations be enforced in the normal works of nursing against hospital infection. CONCLUSIONS Nursing quality control is very important in the control of hospital infection.

Objective To explore the value of carcinoembryonic antigen ( CEA) and cancer antigen 153 ( CA153 ) in detecting tumor recurrences and to establish the optimal operating point of diagnosis of recurrences in HER-2 overexpressing breast cancer using ROC curves .Methods A total of 127 HER -2 overexpressing breast cancer patients was enrolled into this study and subdivided into two groups ,the recurrence group and the non-recurrence group .We created a ROC curve and found out the optimal operating point .Then we compared the advantage of detecting recurrences between optimal operating point in the ROC curve and the diagnostic point that we usually used .Results The recurrence groups showed significantly higher CEA and CA 153 levels than the non-recurrence groups(P<0.0001).The area under the curve(AUC)of the CEA and CA153 were 0.752 and 0.820 respectively and the optimal operating point were 3.5 ng/mL and 17.89 U/mL,respectively.The sensitivi-ties of the optimal operating point of CEA and CA 153 were 46.15%and 65.38%respectively,and the specifici-ties were 97.33%and 89.33%, respectively.Conclusion CEA and CA153 process medium value for detecting recurrences in HER-2 overexpressing breast cancer .

Objective　To explore the effects of hypoxia on the syntheses and secretion of adrenomedullin (AM), calcitonin gene related peptide (CGRP) and c-type natriuretic peptide (CNP) and the relationship between these peptides. Methods　Rat models were established with hypoxia for 10, 20 and 30 d respectively and rats under normal altitude were served as control. Pulmonary artery pressure and the maximum increasing speed of right ventricle (RVdp/dtmax) were measured in every group. The dynamic changes of AM, CGRP and CNP concentrations in plasma were studied with radioimmunoassay. Results　During hypoxia, pulmonary artery pressure and RVdp/dtmax were enhanced. Plasma AM and CNP concentrations were increased while CGRP was decreased significantly. The plasma level of AM had positive correlation with that of CNP, but negatively correlated with that of CGRP. Conclusion　Results indicate that hypoxia may cause pulmonary artery pressure change and right ventricle has compensatory reaction to hypoxic pulmonary hypertension. Dynamic changes of plasma AM, CGRP and CNP concentrations can be regarded as indexes for condition of illness.

Objective To investigate the effect of G-quadruplex (G4) RNA structure of core of hepatitis C virus (HCV) on the specific immune response. Methods Circular dichroism (CD) was usedto detect the G4 spatial structure of the G4 oligonucleotide chain RNA (named as G4R) and its mutant of G4 (named as G4RM) by G base site-specific mutation.The HCV wild-type core gene G4(DNA) sequence was mutated as G4M-core by PCR site-directed mutagenesis without changing the amino acid codon.Then wild type and mutated core genes were constructed into the eukaryotic expression plasmid pcDNA3.1-Myc, and produced as pcDNA3.1-core-G4-WT (named as pG4) and pcDNA3.1-core-G4-M (named as pG4M), the expression of core protein was examined by Western blot. The mice were immunized with the pG4 and pG4M plasmids DNA respectively, and their humoral and cellular responses were examined. Results CD results showed that the structure of G4RM was changed compared to Wild type G4R, and the melting curve analysis showed the melting temperature of GR4M was lower than that of G4R, which indicates that G4RM structure is unstable. Western blot analysis showed that pG4M had much higher protein expression level compared to pG4(P<0.05). Analysis of animal immunization showed that pG4M induced increased levels of total IgG and IFN-γ compared to pG4(P<0.05). The IgG level of the pG4M group was 1.61 times higher than that of the pG4 group. By enzyme-linked immunospot(ELISpot)assay, we found that the release IFN-γ level of pG4M was 1.39 times higher than those of pG4. Flow cytometry showed that the intracellular IFN-γ production in the splenic CD4+ T cells was 1.79 times than those of pG4. Conclusion The G-quadruplex structure of HCV core can inhibit its protein translation. The mutation of G-quadruplex of core led to increased Th1-type immune responses. This is the first report demonstrate that HCV core G-quadruplex mutation can enhance its immunogenicity and could be used as a new strategy ofexploring HCV vaccine with enhanced immunogenicity.

Objective:To establish the specific chromatogram of Fufang Shexiang injection and simultaneously determine five com-ponents( menthol,borneol,patchouli alcohol,muscone,α-asarone) in the injection by GC. Methods:The sample solution was extracted by a solid-phase extraction method. The separation was performed on a DB-WAX GC capillary column with an FID detection. Results:The specific chromatogram had six common peaks, and the similarity was above 0. 91. The five chemical components(menthol,borne-ol,patchouli alcohol,muscone,α-asarone) were well separated and with good linear relationship, the recoveries were between 95. 1 and 102. 6%, and RSD was less than 3. 0%. Conclusion:The method is simple, accurate and reproducible. The specific chromatogram combined with multi-component determination can reflect the overall quality of Fufang Shexiang injection, which can be used for the quality control of the preparation.

Objective To study the protective effect of Res o n myocardial ischemic/reperfused induced injury. Methods My ocardial ischemic/reperfusion model was used to study the protective effect of d ifferent dosage resvaratrol on myocardial ischemic/reperfusion injury in rats. Results Res shrinked the size of myocardial infarction indu ced by the ischemic reperfused method, inhibited the release of creatine kinase( CK) and lactate dehydrogenase(LDH) from the injured myocardium and reduced elega ted ST-T of electrocardiogram(ECG) caused by myocardial ischemic-reperfused in jury in dose-dependent way. Res also improved the morphological changes of inju red myocardium. Conclusion Res has protective action on myo cardial ischemic reperfused injury in rats.

Background Hainan Island is a tropical and subtropical area in China,with a suitable climate for fungal growth and breeding.Keratomycosis occurred frequently in this area.It is essential to analyze the causative genus and investigate the sensitive drugs prior to the clinical treatment of fungal keratitis.Objective This study attempted to analyze the fungal population of fungal corneal ulcer patients in Hainan Island of China and examine the susceptibility of antifungal drugs.Methods A series cases observational study was carried out.One hundred and seventy-four eyes of 174 fungal corneal ulcer patients were enrolled in Hainan Eye Hospital from February 2014 to May 2016 based on the diagnosis criteria in Ophthalmology.The specimens at corneal lesions were collected under the aseptic conditions,and fungus was examined by KOH based smear.Mycological culture was performed with potatodextrose agar and Sabourand's agar.The 82 cultured causative strains were identified to characterize the spectrum of the species associated with keratitis infections in Hainan Province.Susceptibilities of these causative strains to ten antifungals were determined in vitro by slip diffusion method.Results By smear microscopy,fungal hyphae and spores were found in 34 specimens of 126 patients,with the positive rate 27.0％.In 174 specimens of fungal culture,82 strains of fungi were found,with the positive rate 47.1％,and typing results revealed that the isolates were distributed among species in the fusarium (47.5％),non-spore fungus (12.2％),aspergillus (9.8％) and phoma (9.8％).Nystatin was proved to be the most effective drug to 77 strains of antifungal drug susceptibility,followed by amphotericin B and terbinafine,with the susceptibility of 88.3 ％,72.7 ％,and 71.4％,respectively.Conclusions Fusarium species,non-spore fungus,aspergillus,and phoma are common pathogenic fungi of keratomycosis around Hainan Island in China,and nystatin,amphotericin B and terbinafine are efficient in the treatment of the fungal corneal ulcer.

Objective:To explore the investigation level of individual monitoring for medical radiation workers.Methods:Monitoring and analysis of individual doses to the medical radiation workers in Guangdong province were performed, from 2016 to 2019, by the Individual Dose Monitoring Department of Guangdong Provincial Hospital for Occupational Disease Prevention and Control.Results:The numbers of monitored workers were diagnostic radiology 53 674, dental radiology 2 563, nuclear medicine 5 001, radiotherapy 16 687, interventional radiology 22 272 and others 2 087 from 2016 to 2019, of which the number of individuals with doses in excess of investigation level 1.25 mSv, were 76, 6, 18, 28, 133 and 2 respectively. The non-real doses made up 67.1 %, 100 %, 55.6 %, 82.1 %, 76.7 % and 100 % of their respective totals. Their 99th percentile doses P99 were 0.37, 0.39, 0.67, 0.35, 0.54 and 0.30 mSv, and the average periodic dose equivalent were 0.07, 0.06, 0.11, 0.06, 0.07 and 0.05 mSv respectively, indicating a statistically significant difference existing in the average annual effective dose between groups ( Z=-26.139--2.681, P<0.001). Conclusions:Due to non-reality of doses in excess of investigation levels and high labor cost, it is suggested to currently use 0.40 mSv per 3 months as investigation level for diagnostic radiology, dental radiology, radiotherapy and others, and 0.70 mSv per 3 months as for nuclear medicine and interventional radiology.