Objective ToexpresschimericantigenofHCVwithmultipleimmunodominantepitopes inE .coliforimprovingthequalityofreagentsforHCVscreening .Methods Thegenefragmentencoding HCVchimericantigenwasobtainedbymolecularcloningmethodandclonedintopQE 30 plasmidforex pressioninE .coliM 15 .TheexpressedchimericantigenwaspurifiedbyNi NTAandcoatedonELISA platestoanalyzeitssensitivityandspecificity .Results Thechimericantigenof 5 30 0 0washighlyex pressed .ELISAassayofserumsamples (including 18HCVpositiveand 17negativesera)indicatedthatthe HCVchimericantigenhadhighsensitivityandspecificity .Conclusions ChimericantigenofHCVwith typicalimmunodominantepitopescanbeusedtodevelopgoodreagentsforHCVimmunoassay .

Objective To investigate couple's personality similarity effect on the marital quality,and to explore the vairance of such effect under different levels of spouse's depression. Methods The cross?sectional da?ta of 4644 couple from the national survey of mental health database in china( 2009) was used. Couples completed Locke ?Wallance marital adjustment test,The CES?D scale a self?report depression scale and Eysenck personality questionnaire short scale for Chinese version (EPQ?RSC). Results The personality similarities of couples(0.44 ±0.27) and their marital quality (wife (103.71±27.54),husband (106.15±26.94))had significant positive corre?lation ( r=0.25~0.27, P<0.01). Regression analysis showed the effect of personality similarity on the marital quality were varied according to the level of spouse depression( β=0.09?0.22, P<0.05) . Among participants whose husband or wife had higher level of depression,couple's personality similarity had stronger effect on his/her per?ceived marital quality. Conclusion Husband and wife personality similarity is related to marital quality signifi?cantly,and the spouse depression plays a significant moderating role in this relationship.

Objective:To explore the clinical therapeutic effect of simvastatin combined cyclic adenosine monophos-phate on coronary heart disease (CHD)with chronic heart failure (CHF)and levels of serum-related factors.Meth-ods:A total of 78 CHD patients with CHF hospitalized in our hospital from Jan 2011 to Jan 2012 were selected. They were randomly and equally divided into simvastatin group and combined treatment group using number table, both groups received routine treatment,simvastatin group received simvastatin in addition, while combined treat-ment group received cyclic adenosine monophosphate based on simvastatin group.Therapeutic effect,changes of cardiac function indexes and serum factor levels were compared between two groups before and after treatment.Re-sults:The total effective rate of combined treatment group (92.31%)was significantly higher than that of simvasta-tin group (71.79%),P<0.05;compared with before treatment and simvastatin after treatment,there were signifi-cant rise in left ventricular ejection fraction [LVEF,(33.54±3.34)%,(43.41±3.23)% vs.(55.21±3.45)%] and transmitral early/late diastolic peak flow velocity [E/A,(0.63±0.11),(0.70±0.15)vs.(1.01±0.21)],and significant reductions in levels of brain natriuretic peptide [BNP,(536.74±21.41)ng/ml,(117.23±11.57)ng/ml vs.(78.20±10.92)ng/ml]and C reactive protein [CRP,(24.00±2.34)mg/L,(17.01±1.09)mg/L vs.(8.28± 0.81)mg/L]in combined treatment group,P<0.05~<0.01.Conclusion:Simvastatin combined cyclic adenosine monophosphate possess significant therapeutic effect on chronic heart failure of coronary heart disease,it can signif-icantly improve cardiac function and serum factor levels in CHD patients with chronic heart failure,and possess good clinical application value.

Objective To analyze Chinese oncology papers included by Chinese biomedical literature database (CBM) and science citation index (SCI),and to comprehensively and objectively reflect the current situation of Chinese oncology literatures published in domestic and international journals.Methods Chinese oncology papers were retrieved by using CBM and SCI.A comparison analysis was made from the respects of subject distribution,district distribution,organization distribution and high citation situation.Results 67 071 papers of 2012 were retrieved from CBM database,while 9226 papers were indexed by SCI.In terms of district distribution,the first three districts were Jiangsu (6707),Guangdong (4897) and Beijing (2214) in CBM database,while in SCI database,they were Beijing (2214),Shanghai (2008) and Guangdong (1393).The institute with the most amount of literature is university,respectively 9725 and 5755.Moreover,the mostly funded project is National Natural Science Foundation (4710,35.38％ ; 3290,35.68％).Conclusion The 2012 Chinese oncology literatures published in domestic journals has advantage with respect to quantity,compared with the international published journals.However,there exists a bigger difference in terms of quality.Through the comparative analysis,the medical researchers in our country will have some implications in the research orientation.

Objective:To investigate the presence of SENV infection among patients in China,and analyze partial nucleotide sequence of SENV isolated from a patient with non A-G hepatitis.Methods:A nested polymerase chain reaction (PCR) assay with primers from ORF1 of SENV genome was established to detect SENV DNA.The PCR product was cloned and sequenced.Results:SENV DNA was positive in 2 of 7 patients with non A-G hepatitis and TTV negative.Partial gene of a SENV isolate was compared with the corresponding region of SENV isolate(AX025730)from Italy and was found that the nucleotide homology was 90%.Conclusions:The results of this study confirmed the presence of SENV infection in China.The development of a PCR assay for SENV DNA detection and the cloning,sequencing of the SENV isolate have important implication for the diagnosis and epidemiological investigation on SENV infection.

Objective To investigate the clinical efficacy of acupuncture plus TDP in treating stageⅡ-Ⅲ pressure sore.Methods Thirty-three patients with pressure sore meeting the inclusion criteria were randomly allocated to treatment and control groups, 17 cases each. Both groups were first given routine clean care. The control group received routine surgical asepsis dressing change and the treatment group, fire needling, surrounding electroacupuncture and TDP irradiation to the affected part. The pressure sore area was observed and the PUSH score was recorded in the two groups before and after treatment. The clinical therapeutic effects were compared between the two groups of patients. Results The total efficacy rate was 88.0% in the treatment group and 71.0% in the control group; there was no statistically significant difference between the two groups (P>0.05). The total efficacy rate was 88.0% in the treatment group and 71.0% in the control group; there was no statistically significant difference between the two groups (P>0.05). The cure and marked efficacy rate was 58.8% in the treatment group and 23.5% in the control group; there was a statistically significant difference between the two groups (P<0.05). There was a statistically significant pre-/post- treatment difference in the pressure sore area in the two groups at one, two and three weeks after treatment (allP<0.05). There was a statistically significant difference in the pressure sore area between the two groups at two and three weeksafter treatment (bothP<0.05). There was a statistically significant pre-/post-treatment difference in the PUSH score in the two groups at two and three weeks after treatment (bothP<0.05). There was a statistically significant difference in the PUSH score between the two groups at three weeks after treatment (P<0.01).Conclusions Acupuncture plus TDP can markedly relieve the clinical symptoms and accelerate the sore healing in treating stageⅡ-Ⅲ pressure sore.

Patients with chronic thromboembolic pulmonary arterial hypertension,aged＞ 18 yr,scheduled for primary pulmonary thromboendarterectomy from May 2014 to October 2016 in our hospital,were selected.The site and degree of thrombus obstruction,pulmonary hypertension and degree of right heart insufficiency were assessed on 1 day before surgery.Anesthesia was induced with midazolam,etomidate,rocuronium or cisatracurium,and the Swan-Ganz catheter was placed.Anesthesia was maintained with Ⅳ propofol,dexmedetomidine,cisatracurium or rocuronium,and intermittent Ⅳ large boluses of sufentanil.Deep hypothermia circulatory arrest was used for cardiopulmonary bypass.The bispectral index value was maintained between 40 and 60 during surgery.The systemic blood pressure was maintained above 90/60 mmHg during the non-cardiopulmonary bypass period,and pulmonary arterial pressure was maintained not higher than the preoperative baseline level.The vasoactive drugs such as lyophilized recombinant human brain natriuretic peptide,norepinephrine and dopamine were intravenously injected after cardiopulmonary bypass.A total of 53 patients were included in the study and completed surgery successfully,vital signs were stable during surgery,and the patients returned to the recovery room safely.The mean pulmonary arterial pressure was reduced from the preoperative (38±13) mmHg to (26±12) mmHg at the end of the operation,the incidence of reperfusion pulmonary edema after surgery was 8％,incidence of pulmonary hypertensive crisis was 4％,and no patients died in the perioperative period.There were two improvements in the method of anesthetic management of pulmonary thromboendarterectomy in the perioperative period:(1) Lyophilized recombinant human brain natriuretic peptide in combination with norepinephrine was used;(2) The aortic pressure was guaranteed to ensure oxygen supply for the heart and body.This method can maintain the intraoperative circulation stable and reduce postoperative complications and is a suitable anesthetic management method for pulmonary thromboendarterectomy.

Objective: To determine the pharmacokinetics of ephedrine hydrochloride in rats after intragastric administration of Shegan mixtures. Methods:Shegan mixtures (1. 0 ml/100 g) were administered to each rat by gavage. Blood samples were collected after the administration. Plasma concentration of ephedrine hydrochloride was determined by LC-MS/MS. The pharmacokinetic parame-ters of ephedrine hydrochloride were obtained using the pharmacokinetic software. Urine and fecal samples were collected in 24 hours after the administration using metabolic cage to determine the recovery of ephedrine hydrochloride. Results: The pharmacokinetic pa-rameters of ephedrine hydrochloride were as follows:Tmax of (1. 30 ± 0. 23)h,T1/2 of (21. 17 ± 1. 35)h, Cmax of (278. 86 ± 46. 41)ng ·ml-1,AUC0~∞ of (1221.98 ±412.64)ng·ml-1 and Vc/F of (1.70 ±0.15)L. Totally 85.66% ephedrine hydrochloride could be recovered from urine in 24 hours after the administration;however, it was not detected in the fecal samples. Conclusion: Most of e-phedrine hydrochloride is excreted through kidney in 24h,therefore, Shegan mixtures can't cause the accumulation of ephedrine hydro-chloride in rats.

Objective: To validate a nomogram model based on prostate health index (PHI) for predicting prostate cancer (PCa). Methods: The pre-operation serum and clinical data were collected for suspected PCa patients (aged 34 to 90 years), who visited Peking University First Hospital from August 2015 to May 2017 and received transrectal ultrasound-guided prostate biopsy. A total of 391 suspected PCa with total prostate-specific antigen (tPSA)>4 ng/ml were selected into this study, including 235 cases with tPSA level of 4-10 ng/ml and 156 cases with tPSA>10 ng/ml. The p2PSA was tested in all cases and then PHI was calculated. The biopsy results were considered as the gold standard to diagnose PCa. The nomogram model established in Shanghai based on PHI, age and prostate volume was validated in all cases enrolled in this study. Receiver operator curves (ROC) were used to assess the ability of nomogram model to predict PCa. Results: Of 391 male patients included in this study, 175(44.8%)were finally diagnosed as PCa. ROC curves indicated that, the area under the curve (AUC) of the nomogram model for predicting PCa among 391 cases was higher than that of the traditional indicator tPSA (AUC: 0.786 vs 0.578, P<0.000 1). And f/t(AUC: 0.786 vs 0.672, P=0.000 2). For those people with tPSA level of 4-10 ng/ml, the AUC of the nomogram model was also higher than that of tPSA (AUC: 0.720 vs 0.513, P=0.000 3) and f/t(AUC: 0.720 vs 0.626, P=0.042 5). Conclusion The nomogram model based prostate health index (PHI) was validated to have a good auxiliary diagnostic value for PCa in our center.(Chin J Lab Med, 2018, 41: 536-540)

Objective:To understand the concentration level of radon and its progeny in outdoor air in Beijing area and to analyze the related variation pattern and influencing factors.Methods:The continuous measurement device for radon and its progeny concentration is used for the one-year continuous measurement at three points in different directions in Beijing area.Results:The annual concentration average value was (10.9±4.9) Bq/m 3 for radon and (5.8±3.4) Bq/m 3 for its progeny (equilibrium equivalent radon concentration EEC) in outdoor air in Beijing with the annual average value of 0.52±0.19 for equilibrium factor F. Clear diurnal variations of the concentrations of radon and its progeny was observed. Conclusions:The result of one-year continuous measurement show that the concentrations of radon and its progeny in the outdoor air in Beijing area are close to the world average, lower than the typical values in China given by grab sampling measurement. The daily variation pattern of radon and its progeny concentrations is similar to those at home and abroad. The seasonal variation pattern features local climate in Beijing.