BACKGROUND:Animal exhaustion models are used mostly in exercise-induced fatigue research, in which complete exhaustion is confused with sports fatigue. OBJECTIVE:By understanding of exercise-induced fatigue, understanding the mechanism of its occurrence, to grasp the reasonable and effective control measures, which to eliminate fatigue is very important for improving public health, improving sports performance and preventing sports injuries. METHODS:A computer-based search of Medline, Embase, CBMdisc and CNKI was used for articles related to exercise-induced fatigue published from 1966 to 2014. The keywords were “exercise-induced fatigue, peripheral fatigue; central fatigue, exercise-induced fatigue” in English and Chinese, respectively. Finaly, 49 articles were included in result analysis. RESULTS AND CONCLUSION:The criteria and condition control of exercise-induced fatigue should be recognized. The mechanisms of peripheral fatigue and central fatigue are stil unclear. The peripheral fatigue may locate in the neuromuscular junction, T system, sarcoplasmic reticulum, mitochondria and myocardial cel membrane with the corresponding material changes. During the exercise-induced central fatigue, there are corresponding changes in the neurotransmitters produced by the central nervous system, transfers quality and neural hormone.

Objective To establish a rapid and sensitive chemiluminescence immunoassay for detecting squamous cell carcinoma antigen (SCCA)in human serum.Methods Fluorescein isothiocyanate (FITC)and N-(aminobutyl)-N-(ethylisoluminol)(ABEI) were used to label two different monoclonal antibodies of anti-SCCA.SCCA in serum combined with labeled antibodies and formed a sandwiched immunoreaction.After adding the substrate solution,the relative light unit of ABEI was measured.Magnetic particles coated with anti-FITC antibody were used as solid separation carrier.Results The results demonstrated that the method was linear to 22 ng/mL with a detection limit of 0.025 ng/mL.The coefficient of variation (CV)was less than 6% and 7% for intra-assay and inter-assay precision,respectively.Compared with the commercial kit,the proposed method showed a correlation of 0.990 1.Conclu-sion chemiluminescence immunoassay based on magnetic particles displays acceptable performance for quantification of SCCA and is appropriate for use in clinical diagnosis.

Objective:To establish the competency model for medical representatives in China. Methods:Firstly, the competen-cy elements for medical representatives were defined through the literature research and logic analysis, the importance of each element was then evaluated by a questionnaire, and the survey results were analyzed by a factor analysis approach. Lastly, the weight of each factor was confirmed by analytic hierarchy process. Results & Conclusion: The competency model, which consists of 5 dimensions ( professional quality, professional ethics, knowledge, personal characteristics and relationship management) , 26 competency elements and the weight of each factor, is established successfully.

Objective To explore the related factors of atherosclerosis in senile obstructive sleep apnea hypopnea syndrome (OSAHS) patients.Methods From May 2012 to January 2014,129 elderly hypertension and type 2 diabetes patients were recruited.According to the presence or absence of OSAHS,they were divided into OSAHS (n =60) and non-OSAHS (n =69) groups.And 30 physical examination subjects were selected as control group.The parameters of age,gender,height,weight,high sensitivity C-reactive protein (Hs-CRP),homocysteine (Hcy),triglyceride (TG),total cholesterol (TC),high density lipoprotein-cholesterol (HDL-C),low density lipoprotein-cholesterol (LDL-C) and intimate-media thickness of carotid artery (CIMT) were measured with ultrasonography.And their levels were compared among OSAHS,non-OSAHS and normal control groups.And the correlations were analyzed between CIMT and Hs-CRP,Hcy,TG,TC,HDL-C,LDL-C,age and body mass index (BMI).Results The levels of Hs-CRP[(3.40 ± 0.91) mg/L,(2.57 ± 1.01) mg/L],Hcy [(16.50 ± 2.89) μmol/L,(11.20 ± 2.32) μmol/L],CIMT[(1.06 ±0.14) mm,(0.93 ±0.13) mm],TG[(2.52 ± 1.40) mmol/L,(2.51 ±2.02) mmol/L],TC[(5.74 ± 1.16) mmol/L,(5.49 ± 1.09) mmol/L] and LDL-C[(3.15 ±0.47) mmol/L,(3.05 ±0.70) mmol/L] in both OSAHS and non-OSAHS groups were higher than those in normal control group [Hs-CRP:(2.06 ± 1.22) mg/L,Hcy:(6.04 ± 1.85) μmol/L,CIMT:(0.65 ± 0.07) mm,TG:(0.99±0.24) mmol/L,TC:(3.63 ±0.71) mmol/L and LDL-C:(2.47 ±0.27) mmol/L] (OSHAS group vs.control group,t =5.88,18.15,15.62,5.91,9.17,7.47,non-OSAHS group vs.control group,t=2.20,10.73,11.51,4.09,8.56,4.45,all P＜0.05).The levels of Hs-CRP,Hcy,CIMT and plaque score were higher in OSAHS group than those in non-OSAHS group [(1.92 ± 1.03) vs.(1.35 ± 0.97) points] (OSHAS group vs.non-OSAHS group,t =4.84,11.72,5.54,3.91,all P ＜0.05).CIMT or carotid artery plaque were related with age,BMI,TG,TC,LDL-C,Hs-CRP and Hcy in OSAHS group.Conclusions OSAHS may elevate the level of inflammatory factors and cause atherosclerosis.And the changes of CIMT,Hs-CRP and Hcy are parallel.Hcy also has important clinical significance in the progression of atherosclerosis.

Objective To pave the way for developing recombinant antiidiotypic antibody(antiId)vaccine of gastric carcinoma by generating phagedisplayed antiId to monoclonal antibody MGd1 directed against the cancer. Methods Balb/c mice were immunized i.p. with MGd1 conjugated with KLH, and mRNA was isolated from the spleens of the immunized mice. VH and VL DNAs of the antibody were amplified separately by RTPCR and assembled into ScFv DNAs with a linker DNA by PCR. The ScFv DNAs were ligated into the phagemid vector pCANTAB5E and the ligated sample was transformed into competent E.coli TG1. The transformed cells were infected with M13KO7 helper phage to yield phage antibody ScFv library. After four rounds of panning to the library with MGd1, the MGd1positive clones were selected by ELISA from the enriched phages. The types of the antiId ScFv displayed on the selected phage clones were preliminary identified by competition ELISA. Results The VH,VL and ScFv DNAs were about 340 bp, 320 bp and 750 bp respectively. After four rounds of panning to the antibody library, 17 MGd1positive phage clones displayed antiId ScFv were selected from 40 enriched phage clones, among which 3 displayed ? or ? type antiId ScFv. Conclusion The successful generation of antiId ScFv to monoclonal antibody MGd1 by recombinant phage antibody library technology might lay a foundation for screening of novel candidate molecules for developing recombinant antiId vaccine of gastric carcinoma.

Rapid prototyping (RP) technology can be used to translate the CAD model of the product into the physical one, thus the rationalization of the design project and product structure is identified. This paper introduces the basic principle of RP technology and typical prototyping system. The application of RP technology to the development of first-aid kit is also mentioned. RP technology proves effective to reduce the cost and time of the development of medical equipment.

Training ability and level of trauma management skills have an straight influence on the results of pre-hospital care and treatment of casualties, and thus are very important to save the life of the wounded and to reduce the mutilation rate. The adoption of a teaching module employing a human analogue significantly improves first aid training level, which can help the students master trauma management skills and gain self-confidences. The application of virtual realty technique and human analogue to such first-aid training is reviewed as the training for dressing, hemostasis, fracture fixation, casualty transport, cardiopulmonary resuscitation and urgent airway management.

Objective To discuss the significance and alteration of heart rate turbulence (HRT) of diabetics with ventricular premature beats of coronary heart disease (CHD). Methods 107 patients were chosen and divided into DM group(n=30), CHD group (n=32)and normal group(n=45).The turbulence onset(TO)and turbulence slope(TS) were calculated and analyzed. Results For the diabetics with ventricular premature beats, TO value was higher and TS value was lower than the normal group(all P<0.05).The value of TO and TS of the diabetics with ventricular premature beats were similar to those of CHD(P>0.05). Conclusions HRT can be used to estimate the integrality and stability of cardiac autonomic nerve function for the diabetics and it is an important factor for diagnosis.

Malnutrition is significantly correlated with the high mortality and other poor outcomes of stroke;in turn,stroke can increase the incidence of malnutrition.Old age and swallowing dysfunction are independent risk factors of post-stroke malnutrition.The sequential nutritional support with enteral nutrition and parenteral nutrition can reduce or avoid the complications of both malnutrition and stroke,and therefore should be considered for stroke patients,especially those who are critically ill.

Risk factors related to malnutrition were prospectively studied in 82 cases with acute ischemic stroke in our hospital during December 1,2007 and December 31,2008. The incidences of malnutrition on the first and ( 14 ± 1 )th day were 18% (15/82) and 30% (25/82). Study showed that age ( P = 0. 007 ), dysphagia ( P = 0. 043 ), malnutrition on admission ( P = 0. 003 ) were risk factors related to malnutrition on the ( 14 ± 1)th day after admission; there was no interaction between dysphagia and the other two factors, dysphagia was an independent risk factor related to malnutrition after acute ischemic stroke.