Objective To explore the therapeutic effects and mechanisms of somatostatin on liver injury in acute hemorrhagic necrotizing pancreatitis(AHNP) in rats.Methods Murine model of AHNP was established by retrograde injection of artificial bile into the biliopancreatic duct.The animals were divided into sham operation group(S group), AHNP saline injection group(AHNP group), and AHNP octreotide treated group. TLR2,4 mRNA expressions and NF-?B expressions in the liver tissue at 3,6 and 12h after operation were measured.Results TLR2,4 mRNA in liver tissue in the AHNP group began to rise at 3h,and peaked at 12 h(P

Objective To investigate the results of different measuring procedures of hemoglobin A1c (HbA1c) trueness verification scheme in China.Methods Cross sectional survey.The data were collected via the External Quality Assessment (EQA) software from laboratories participated in the First HbA1c trueness verification EQA.Then the collected data were divided into several groups based on laboratory instruments and the data from less than 5 group were excluded.The observed imprecision, bias and sigma (σ) were calculated and the bias％ and CV％ were drew in the sigma chart.The average bias％, CV％ and weighted average σ of each level were also calculated.Results Total 123 laboratories were divided into 9 groups and setting 6％ as the Allowable Total Error, the average bias％, CV％ and weighted average σ of 201411 (target value was 5.4％) were 3.70％, 4.55％ and 0.51 respectively σ, of 201412 (target value was 7.8％)were 2.42％ , 3.56％ and 1.24σ respectively.None of the group achieved the 2σ quality of 201411, and 1 group achieved the 2σ quality of 201412.Conclusions There are obvious biases among the results of many measuring systems and the target value assigned by reference measuring procedures of HbA1c, as well as the imprecision.The Sigma External Quality Assessment Chart is a visual tool, indicating that the quality of measuring systems necessitate improvement therefore to ensure the reliability of results and make better use of HbA1c in clinical application.

Objective To investigate whether the new mechanically-activated (MA) cation channel Piezo 1 protein can cause the apoptosis of human chondrocytes under compressive loading,using a Flexercell unit by activating MAPK/ERK5 signal pathway.Methods Primary human chondrocytes were isolated,cultured,and then subjected to the static compressive loading for 2 h,12 h,24.h and 48 h,respectively.The GsMTx4,which is the special inhibitor of the Piezo1 protein and the BIX02188,which is the inhibitor of the ERK5 served as the inhibitor group.The immunofluorescence was used to locate the expression of the Piezo 1 protein.The expressions of Piezo1 and ERK5 were assessed by reverse transcription-polymerase chain reaction (RT-PCR),as well as the apoptosis gene B cell lymphoma/leukemia-2 (Bcl-2),Bcl-associated X protein (Bax) and Bcl-associated death promoter (BAD).In addition,Piezo1 inhibitor,GsMTx4,was used to block the MA cation channel Piezo1,served as the inhibitor group.AVPI was used to detect the apoptosis of the OA chondrocytes.Results The location of the Piezo1 was expressed in nucleus and cytoplasm of chondrocytes.The expression of the Piezo1,ERK5,BAD,and Bax mRNA in the OA chondrocytes is weak.The 12 h stretch force group was significant increased,and the 24 h stretch force group was the highest expression.However,the expression of the 48 h group was decreasing.The expression of the Bcl-2 in the 12 h group was decreasing,and the 12 h stretch force group was the lowest expression while the 24 h stretch force group was increasing.In the GsMTx4 group,the expression of the Piezo1,ERK5,BAD,Bax was decreasing while the Bcl-2 was increasing.In the BIX02188 group,the expression of the ERKS,BAD,Bax was increasing while the Bcl-2 was decreasing,while the expression of the Piezo1 was not change.The result of AV-PI shown that the 2 h stretch force group increased early stage of apoptosis.The 12 h stretch force group increased late stage of apoptosis,and the 24 h stretch force group's apoptotic rate was the highest.However,the apoptotic rate of the 48 h group was lower than the 24 h stretch force group.The GsMTx4 could inhibit the late stage of apoptosis.Conclusion Piezo 1 plays an important role in the apoptosis of human chondrocyte through the MAPK/ERK5 signal pathway.

Objective To evaluate the effect of dexmedetomidine on the expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) during focal cerebral ischemia-reperfusion (I/R) in rats.Methods Thirty pathogen-free male Sprague-Dawley rats,aged 12-16 months,weighing 300-360 g,were randomly divided into 3 groups (n =10 each) using a random number table:sham operation group (group Sham),focal cerebral I/R group (group I/R),and dexmedetomidine group (group D).Focal cerebral I/R was induced by occlusion of the right middle cerebral artery.In group D,dexmedetomidine was given as a loading dose of 1 μg/kg (over 10 min) starting from 1 h of ischemia,followed by an infusion of 0.05 μg · kg-1 · h-1 until 2 h of reperfusion.Neurological deficit was assessed and scored at 24 h of reperfusion,and then the rats were sacrificed.Brains were removed for determination of cerebral infarct size and expression of iNOS and COX-2 in the hippocampus (by Western blot).The percentage of cerebral infarct size was calculated.Results Compared with group Sham,the neurological deficit score,percentage of head swing to the left,percentage of cerebral infarct size,and expression of iNOS and COX-2 in the hippocampus were significantly increased in I/R and D groups (P＜0.05).Compared with group I/R,the neurological deficit score,percentage of head swing to the left,percentage of cerebral infarct size,and expression of iNOS and COX-2 in the hippocampus were significantly decreased in group D (P＜0.05).Conclusion The mechanism by which dexmedetomidine mitigates focal cerebral I/R injury may be related to inhibition of iNOS and COX-2 expression in rats.

In accordance with the General Hospital Accreditation Standards Ⅲ (2011) and other HAI-related hospital guidelines,a quantitative assessment index system for infection control of general hospitals has been established.Based on these,departmental performance of the hospital has been regularly checked in their infection control,and the outcomes of assessment included into the performance appraisal system of the hospital.Thanks to this practice,there have been no outbreaks of hospital associated infections in the hospital in recent two years,the incidence of hospital associated infection decreased from 1.25％ in 2012 to 1.05％ in 2013.Proper hand hygiene rates,compliance rates increased from 45.3％ and 26.9 ％ in 2012 to 92.4 ％and 65.5 ％ in 2013.The index system for evaluating prevention and control of hospital associated infection is scientific and effective.

Objective On the background of the clinical skills competition for national medi-cal students in the higher medical colleges and universities, to investigate medical students' mastery of hand hygiene knowledge and skills, explore the effective methods of teaching, and improve the medical students' hand hygiene compliance and accuracy in clinical practice. Methods 90 medical students at a tertiary-level teaching hospital clinical practice stage were randomly selected for the study, and performed hand hygiene theoretical knowledge and practical skills training in special education. Special teaching investigation was made before and after training, to investigate the students' hand hygiene compliance rate in clinical practice. And the correct rate of hand hygiene were examined and medical students' hand hygiene compliance rate and correct rate were compared before and after the special teaching and training. Statistical analysis was made by using chi square test 2. Results After theory teaching and additional special skills training the students' hand hygiene compliance and accuracy were improved significantly (79.00%vs. 35.50%, P=0.000). The correct rate of hand hygiene was also significantly higher than before training (92.22% vs. 61.11%, P=0.000). Conclusion Hand hygiene knowledge and skills training can significantly improve the medical students' hand hygiene compliance and accuracy in the clinical practice, and is conducive to the prevention of the spread of infection in hospitals, and then reduce the incidence of hospital infection.

Objective To promote the progress in varicella-zoster virus (VZV) immunoglobulin preparation,a rapid microneutralization test ( RMNt) was set up for screening plasmapheresis donations with high titers of special neutralizing antibodies to VZV.Methods With reference to the VZV immunoglobulin (VZIG) preparation standard of FDA and VZIG international unit ( IU) , a screening standard was formulated; the amount of virus was analyzed to determine the optimal conditions for RMNt;screening technology was established and the IU was introduced as quality control ;twenty samples of apheresis plasma and fifteen samples of pooled plasma were diluted at 1∶2 to 1∶256 and tested by RMNt respectively;and the sensitivity of RMNt was also analyzed by the commercial ELISA kit .Results Plasma samples that were diluted at 1∶16 and had a titer more than 0.4 U/ml could be used in the production of VZIG .1500 PFU/ml titers of virus in RMNt pro-duced readable results in plasma screening .Eight apheresis plasma samples tested met the screening standard , but none of the pooled samples tested positive .RMNt had a good linear relationship with ELISA (r=0.895 24,P<0.0001).Conclu-sion The sensitivity, throughput and operability of the established RMNt can be used in the screening of plasma donations as key techniques for the production of VZIG .

Routine supervision on hospital infection control was normally fed back on paper-based media,plagued by low efficiency and poor traceability.A feedback process developed with Workflow technology,can loop the entire process ranging from routine supervision to identifying loopholes,to hospital infection and joint development of correctional measures clinically,all the way to implementation of infection control practice and sustained improvement.The closed-loop PDCA cycle management features greater efficiency and traceability in hospital management of its infection control,and builds a quality improvement model featuring close communication between infection control department and clinical departments.

Objective To investigate the value of TI-RADS for sonographic diagnosis of papillary thyroid carcinoma (PTC) and follicular thyroid carcinoma (FTC) and to evaluate the sonographic findings of FTC compared to PTC.Methods The clinical and sonographic data of 363 cases of pathology confirmed thyroid nodules were retrospectively analyzed.The thyroid nodules were classified by TI-RADS grading criteria,the accuracy of TI-RADS and sonographic findings between FTC and PTC was analyzed.Results In 363 thyroid nodules,114 cases were confirmed as benign lesions;249 cases were confirmed as carcinomas,including 50 FTC cases and 199 PTC cases.The sensitivity,specificity,PPV,NPV,and accuracy of PTC were 97.0％ (193/199),85.1％ (97/114),91.9％ (193/210),85.8％ (97/113),95.7％ (290/303) respectively.The sensitivity,specificity,PPV,NPV,and accuracy of FTC were 97.0％(193/199),85.1％ (97/114),91.9％ (193/210),85.8％ (97/113),95.7％ (290/303) respectively.There were significant differences of nodule size,shape,margin,echogenecity,calcification,halo and flow between FTC group and PTC group (P ＜ 0.05).Conclusion TI-RADS has higher value in the sonographic diagnosis of PTC than that of FTC.FTC are greatly different from PTC in many sonographic findings making it less valuable for the diagnosis of FTC.

Objective To evaluate the application effect of UK manual moving & handling skills in the training of preventing occupational lower back pain among nursing professionals,and explore effective ways of training on preventing occupational lower back pain to nursing professionals.Methods 86 nursing students,94 nurses with 12 months' work experience,and 88 nurses with work experience over 5 years were randomized selected,and they each were divided into the experimental group and the control group.For 86 nursing students,43 students in each group; For 94 nurses with 12 months' work experience,47 nurses in each group; For 88 nurses with work experience over 5 years,44 nurses in each group.A routine taught training was given to both groups,while the experimental group received an extra 25 academic hours' structured OLBP prevention training.Comprehensive proposition was used to assess theoretic learning outcome of all participants,and practical skills of all participants were tested through institutional cases.Ressults There was significant statistical difference between scores of participants from two groups,and the scores of the experimental group in nurses with 12 months' work experience were different from the experimental groups of nursing students and nurses with work experience over 5 years.Conclusions Structured OLBP prevention training should lead occupational health prevention and health promotion concepts,apply numerous teaching approaches,emphasize the content of maintaining physical and psychiatric health and occupational protection management,set new-enrolled nurses as the main focused group of training.