ObjectiveTo provide a reference for the establishment and appliance of enzyme reference measurement of CK in China by comparing and analyzing the RELA results of CK in IFCC from 2006-2008. Methods The RELA samples of CK were measured according to the reference procedure for the measurement of catalytic activity concentration of CK (37 ℃) ,which had been published by IFCC. The EP5A2 protocol was used for evaluation of the imprecision and ERM was used for verification of the trueness. Results In RELA 2006, the result of sample A was (9. 896 ±0. 112) μkat/L, and the result of sample B was (4.953 ±0. 120) μkat/L. In RELA 2007, the result of sample A was (2.684 ±0.054)μkat/L, and the result of sample B was (8.798 μ0. 101) μkat/L. In RELA 2008, the result of sample A was (10. 523 ±0. 149) μkat/L,and the result of sample B was (10. 551 ±0. 141) μkat/L. The precision of the CK reference method in the year 2006 to 2008 was 0. 92%, 0. 86% and 0. 88% respectively, each of them is less than 1% and the results of ERMs were consistent with the certified value(1. 68 ± 0. 07)μkat/L,which verify the imprecision and accuracy of the reference method. Conclusions All of the results in the continuous three years were in the range of equivalence limits suggested by IFCC. The CK reference method suggested by IFCC has been established and it is getting better.

Objective We selected 3 268 genes of human myocardial cells and analyzed the variability of mRNA expression of myocardial cells in normal adults,to explore the variation of energy metabolism related genes in human myocardial cell and compared the characteristics and variation tendency of energy metabolism related genes in human myocardial cells in the early stage.Methods Microarray was prepared with 3 368 myocardial cell related cDNAs.And we studied differentially expressed genes between myocardial cells and multi-tissues in normal adults by PCR,sequence,fluorescent probe labelling and double hybridisation.Results Functional group analysis was carried out with 3 268 genes of myocardial cells in normal adults.Compared with Universal Human Reference,576 genes from myocardial cells were up- regulated(≥1.5 folds).Expression of 1 199 genes were down-regulated(≤66.7%).194 genes were involved in cell energy metabolism.Among them,17 genes were up-regulated and 4 genes were down- regulated.65 genes were related with cellular skeleton,18 of them had up-regulation and one of them had down-regulation.Coneluslon Compared with multi-tissues,there were many genes preferentially expressed in myocardial cells of normal adults,which can be used as a reference system to evaluate the different stages and different pathological behaviors of cardiovascular diseases.

Objective To assess the effectiveness of prevention program on iodine deficiency disorders and iodine nutritional status of residents in Guangdong Province.Methods Probability proportionate to size sampling(PPS) was employed in surveillance of iodine deficiency disorders.Thirty counties(cities,districts) were selected in Guangdong Province.In each county(city,district) one township(street) was selected; in each township (street) one primary school was selected and in each primary school 40 children aged 8-10 were chosen to examine their thyroid and to collect salt samples at their home for determination of salt iodine.Out of the 40 children,12 children were chosen to collect urine samples for determination of urinary iodine.From the primary schools chosen,40 grade 5 students were selected for intelligence quotient(IQ) test.In the nearby of the primary schools,3 townships(towns,street) were selected and in each township(town,street) 5 pregnant and 5 lactating women were selected to collect their urine samples for determination of urinary iodine.Type-B ultrasonic was used in measuring the thyroid volume.The iodine content of urine samples was measured by the method of arsenic and cerium catalysis spectrophotometry.The iodine content of salt was determined quantitatively with the titration method.IQ was tested by Chinese combined Raven's test.According to geographical location and the implementation of iodized salt,the effects of iodized salt on iodine deficiency disorders were analyzed in the plains and the Pearl River Delta Coastal region with mild iodine deficiency(iodized salt implementation region,referred to as the plains and the PRD),historical iodine deficiency areas (iodized implementation region) and the eastern and the western coastal areas of Guangdong(areas with non-iodized salt problem,referred to as the eastern and the western Guangdong).Results A total of 1200 children aged 8 to 10 were examined by type-B ultrasonic test,and goiter rate was 3.5％ (42/1200).The differences of goiter rate between the plains and the PRD,the historical iodine deficiency areas and the eastern and the western Guangdong were statistically significant (x2 =6.6,P ＜ 0.05).The goiter rate (6.1％) in the eastern and the western Guangdong was significantly higher than that of the plains and the PRD and the historical iodine deficiency areas (3.3％,2.0％,x2 =5.6,7.1,all P ＜ 0.05).A total of 1200 salt samples were examined.The median and coefficient of variation of iodine in the salt were 31.0 mg/kg and 23.2％,respectively.Coverage of iodized salt was 97.5％(1170/1200) while 96.1％(1153/1200) of consumed iodized salt was qualified.The median urinary iodine of 1200 children aged 8-10 was 186.5 μg/L,and the differences of median urinary iodine between the plains and the PRD,the historical iodine deficiency areas and the eastern and the western Guangdong were statistically significant(x2 =5.9,P ＜ 0.05).The median urinary iodine of the eastern and the western Guangdong(162.4 μg/L) was significantly lower than that of the plains and the PRD(207.5 μg/L,x2 =8.7,P ＜ 0.01).The difference of median urinary iodine between the plains and the PRD,the historical iodine deficiency areas and the eastern and the western Guangdong was statistically significant(x2 =58.9,P＜ 0.01).The median urinary iodine of the eastern and the western Guangdong(109.6 μg/L) was significantly lower than that of the historical iodine deficiency areas and the plains and the PRD(152.9,155.2 μg/L,x2 =18.3,20.6,all P ＜ 0.05).The mean IQ of the 1208 grade 5 students was 102.8 ± 14.3.The IQ of the plains and the PRD(104.3 ± 13.9) and the historical iodine deficiency areas(102.7 ± 14.3) was significantly higher than that of the eastern and the western Guangdong(100.3 ± 14.7,t =3.8,2.1,P＜ 0.01 orP＜ 0.05).Conclusions The goal of iodine deficiency disorders elimination is achieved as scheduled in Guangdong Province.The health level of general population has been improved significantly.Iodine nutrition is in the appropriate range (100-199 μg/L) in general population but low in pregnant women.The selling of non-iodized salt in the eastern and the western Guangdong Province should be followed closely.

Purpose: Hemiparesis in stroke survivors has been reported to affect respiratory function. The relationship between trunk control and respiratory function, however, is not well understood. We aimed to map the state of the association between the trunk and respiratory function as well as evaluate the effect of a respiratory function training intervention on trunk control for stroke survivors. Methods: A scoping review and meta-analysis of observational and interventional studies were performed. Cochrane Library, CINAHL with Full Text (EBSCO), Medline (Ovid), and PubMed were searched using the terms stroke, respiratory, and trunk control. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses Extension for Scoping Reviews (PRISMA-ScR) checklist was used to examine the sections of each report. Results: A total of 102 studies were identified, of which 12, published between 2011 and 2022, were included in the meta-analysis or narrative synthesis. Three studies were included in the meta-analysis of the correlation between trunk control and respiratory function parameters (forced vital capacity [FVC], forced expiratory volume during the first breath [FEV1], maximal inspiratory pressure [MIP], and maximal expiratory pressure [MEP]) with effect sizes (Fisher's z) for all outcomes, which ranged from small to intermediate (between 0.21 and 0.39). Furthermore, five studies were included in the meta-analysis of the effect of respiratory function training intervention on trunk control. An overall effect size (Cohen's d) of 1.47 corresponds to a large effect. We also found significant improvements in MIP and MEP but not in FVC and FEV1 for stroke survivors with the interventions. Conclusions Respiratory training, use of diaphragmatic resistance exercise or abdominal breathing, use of a pressure threshold-loading device, and the performance of functional strengthening exercises for the trunk muscles were found to increase patients’ trunk control and improve their respiratory muscle strength.

Objective To investigate the clinical results of minimal invasion spinal surgery (MISS) in treating tibial plateau fractures to provide best procedure for such treatment.Methods The study involved 36 cases with tibial plateau fractures resulted from traffic injury,fall-from-height injury and strain injury including 24 males and 12 females at age of 19-65 years (average 42.6 years).According to Schatzker classification,there were seven cases of typeⅠ,five typeⅡ,five typeⅢ,five type IV,sev- en typeⅤand seven typeⅥ.All cases were treated by different methods of MISS.Results Follow up for 8-24 months in 35 cases showed fracture healing within 3-4 months,without severe complications such as poor wound healing,infection or osteofascial compartment syndrome.Meanwhile,no traumatic knee osteoarthritis,inversion or eversion of the knee were found.The mean range of knee motion was 94?,with fine knee function in 32 cases (91.4%) according to Merchant score.Conclusions Treatment of tibi- al plateau fractures should adopt limit incision,indirect reduction and biofixation to take place widespread exposure and rigid plate fixation.MISS is safe and effective for tibial plateau fractures.

ObjectiveTo demonstrate the project scope of the afferent nerves of the lumbar intervertebral disc,on which basis to explore the mechanism of the symptoms of discgenic low back pain.MethodsThirty Wistar rats were divided randomly into three groups of 10 rats each:the L4-5,L5-6,and L6 S1 group.Each group was further divided randomly into two subgroups,the experimental group and the control group,5 rats for each group.Intervertebral disc was exposed through the posterior approach under peritoneal cavity anesthesia,after the nerve roots were pull away,2 μl of 30％ cholera toxin-horseradish peroxidase (CT-HRP) was injected into the inner layer of the intervertebral disc in the experimental group,while 2 μl of 0.9％ Nacl was used in the control group.Forty-eight hours after the surgery,all rats were perfused and bilateral dorsal root ganglions(DRGs) of T10-L3 were resected and fixxied.Each DRG was sectioned at 30 μm thickness and processed by DAB method.The sections of DRGs were coverslipped and observed by optical microscopy for the neurons or axons labelled by CT-HRP.It was judged as positive that brownish-black particles were in the neurons or axons.ResultsNot in a single dorsal root ganglions,but in a scope of dorsal root ganglions axons labled by CT-HRP could be seen in the rats in the experimental groups.No CT-HRP labled neurons or axons were seen in dorsal root ganglions in the contral groups.ConclusionAfferent nerves of the lumbar intervertebral disc project to a scope of dorsal root ganglions,which is the anatomic basis of the mechanism of the symptoms of discgenic low back pain.

Objective To investigate the anti - stress activity of thymopentin ethyl ester. Methods Anti - stress activity was evaluated by heat stress model and chronic uncontrolled stress model. Heat stress model;of 60 KM mice were divided into six groups. Except the controlled group, the other mice were maintained in 42℃ for 1h. Chronic uncontrolled stress model:of 60 KM mice were divided into six groups. Except the controlled group, the other mice were given three different stimulations once a day for continuous 21 d. The controlled group and model group were injected saline 0.2ml, and the three test groups were respectively injected thympentin ethyl ester at 2mg/kg,0.2mg/kg, 0.02mg/kg subcutaneously. The positive controlled mice were given thymopentin 0.2mg/kg subcutaneously. At the end of the experiment, plasma corticosteroid, IL -2 and SOD were determined according to the kit instructions. Results The activities of thymopentin ethyl ester in suppressed corticosteroid up - regulation and the elevated plasma IL - 2 and SOD level were more significant than those of thymopentin(P

Gene engineering is the main course of biological engineering. It should be adapted to the demand of innovation spirit, practice ability and comprehensive quality of students. Educational reform of gene engineering conducted by constructing system of theory and practice, optimizing course teaching content, strengthening practice teaching content, using modern teaching technology, strengthening web course construction and improving teaching methods. We pay attention to impart specialty knowledge and learning methods to students. Its aim was to increase teaching effects and meet the demands of bioengineering specialty and qualified personal training in 21 century.

Objective:To analyze and summarize the commonalities and patterns in acupoint selection for moxibustion treatment of asthma. Methods: Data retrieval was conducted using ‘moxibustion’ and ‘asthma’ as the keywords through China National Knowledge Infrastructure (CNKI), Wanfang Academic Journal Full-text Database (Wanfang) and Chongqing VIP Database (CQVIP). Excel 2010 was used to establish the major acupoint database for moxibustion prescriptions in treatment of asthma; data mining methods including association patterns and clustering were adopted to analyze the characteristics and patterns in acupoint selection for moxibustion treatment of asthma. Results: A total of 161 moxibustion prescriptions were recruited. The most commonly used acupoint was Feishu (BL 13), the most commonly used meridian was the Bladder Meridian of Foot Taiyang, and the most commonly treated region was the back. The association rule analysis showed that Feishu (BL 13)-Dazhui (GV 14)-Fengmen (BL 12) had the most significant correlation, and the clustering analysis discovered 5 effective acupoint clusters. Conclusion: In moxibustion treatment of asthma, topical acupoints Feishu (BL 13), Dazhui (GV 14) and Fengmen (BL 12) can be selected, along with the acupoints from the Bladder Meridian of Foot Taiyang and the back.