Objective:To investigate the promoting effect of nerve regeneration factor(NRF) on nerve regeneration after sciatic nerve injury in rats.Methods: Thirty Sprague-Dawely rats,including 15 females and 15 males,were equally randomized into 3 groups: low dose NRF group,high dose NRF group and control group.Rats' sciatic nerves were injured by crushing and sciatic function index(SFI) was determined by walking tract analysis at days 10,15 and 20 after crushing.Then sciatic nerves on both sides were dissociated for electrophysiology study and the recovery rate of nerve conduction velocity(NCV) was calculated.Then,2 rats were randomly selected from each group and the ultrastructure of regenerated sciatic nerves was observed by electron microscope.Meanwhile,the spinal cord segments(L_4-L_6),the distal site of injured sciatic nerve and the injured gastrocnemius muscle in other rats were observed by light microscope.The count of motor neurons of anterior horn,the number of myelinated fibers,the transverse section area of gastrocnemius muscle cells and other parameters were determined.Results: At day 10 after crushing,SFI scores had no significant difference between 3 groups;at day 15 after crushing,SFI score of high dose NRF group was significantly higher than that of the control group(P

Objective To investigate the knowledge of osteoporosis and its related behavior in middle-aged and elderly people.Methods A total of 1199 residents aged≥45 years in Hangzhou community were investigated by health survey questionnaire of osteoporosis.Results There were statistically significant differences in osteoporosis symptom scores according to ages (aged 45 to 59 years,6.38±2.64; aged 60 to 74 years,5.69±2.83; aged over 75 years,4.43±2.54),and according to education background (middle school or below.4.56± 2.01; secondary school,6.07±2.45; university or higher,8.25±2.69),and according to occupation (mental labour,5.89±3.21;manual labour,4.57 ± 2.36),and residence (city,6.12 ± 3.32 ; countryside,4.34 ± 2.25) (F/t =14.59,26.94,6.29,8.35,respectively,P＜0.01).There were significant differences in types ofexercise between rural and urban population (no exercise or little exercise,30.4％ vs.32.9％; light burden movement,64.4％ vs.53.5％; weight-bearing exercise,5.2％ vs.13.6％; x2 =22.13,P＜0.01).The significant food intake differences were found between rural and urban residents (milk,30.2％ vs.38.3％ sea-food,28.2％ vs.35.7％; bean-products,48.3％ vs.56.1％; fruit,52.6％vs.62.5％; coffee,3.2％ vs.7.4％; x2=8.55,7.77,7.21,19.37,10.14,respectively,all P＜0.01).Conclusions Health education should be individualized based on age,education level and occupation.The elderly and low education groups should be concerned.We should shift the focus of publicity and education to the countryside and enhance the awareness of osteoporosis prevention in order to build a healthy lifestyle.

In order to improve the reliability of cardiac pacemaker contact-less power supply technology, this paper proposes a novel application of wireless feedback voltage stabilizing technology to adjust heart disease patients with inner power supply filter circuit output voltage and current control method, to keep the output voltage stability, and to ensure that the super capacitor and cardiac pacemaker to get a stable power supply. To implement the real-time accurate voltage control with considering the primary and secondary side inductance coupling coefficient changes, the change of the external power supply voltage and load, it is necessary to test thee real-time and accurate output voltage and current value after rectifying filtering. Therefore, based on the chaotic control theory, we adopted method of phase diagram on the basis of the quick observation after rectifying filtering, so that the method of voltage and current could improve the detection time of the circuit. The phase diagram of proposed control method can be divided into 8 segments, and we got 7 zero-extreme points. When these zero-extreme points are detected, according to extreme points of the zero instantaneous values, the corresponding average values of voltage and current were obtained. Simulation and experimental results showed that using the above method can shorten the response time to less than switch devices 1/2 switching cycles, thus validating the effectiveness and feasibility of the proposed detection algorithm.
Algorithms ; Electric Power Supplies ; Feedback ; Humans ; Nonlinear Dynamics ; Pacemaker, Artificial ; Wireless Technology

Objective To explore the effect of multipore-light brown fixation on preventing peripherally inserted central catheter from prolapsing. Methods Randomizedly 82 patients with PICC were equally divided into treatment group and control group. Multipore-Light Brown fixation was used in the treatment group to stabilize catheter , while the routine care was applied in the control group for stabilization . The two groups were compared in terms of prolapse rate and degree of the PICC . Result The prolapse rate and the prolapse degree of the treatment group were significantly lower than that of the control group ( P < 0 . 01 ) . Conclusions The multipore-light brown fixation is more effective in the stabilization of PICC. It can effectively prevent the PICC from prolapsing.

Objective To study the methods and significance of motor and sensory areas mapping by optical intrinsic signal imaging (IOSI) and neuromonitoring (IOM) during the operation on the lesions near the central sulcus. Methods Intraoperative neuromonitoring were firstly used to map the central sulcus and motor cortex in 5 patients with glioma undergoing surgery. Then, intrinsic optical signals imaging were used to locate the postcentral gyrus. According to the results of mapping, microsurgical operation was chosen for the resection of glioma and postoperative functional results were evaluated. Results All the patients acquired accurate location of central sulcus, motor cortex and somatosensory cortex. The enhanced MRI performed within 24 hours postsurgery showed total resection in 5 cases. The motor and somatosensory function of 5 patients returned to normal after 3-12 months. Conclusion Intraoperative location of the somatosensory area and motor area by optical intrinsic signal imaging and neuromonitoring is a reliable and safe method.

0.05),but improved significantly the rise from day 3 to day 10 of serum fibronectin level 〔(22.8?5.8) mg/L vs.(9.6?3.6) mg/L,P

Objective To analyse clinical features of 86 cases of intracranial arteriovenous malformation (AVM) and explore strategies and methods of the microsurgical treatment of intracranial arteriovenous malformations.Methods The clinical data of 86 intracranial arteriovenous malformation from January 2010 to January 2013 were retrospectively reviewed.For diagnosis,computed tomography (CT) with angiography (CTA),and DSA were used,which could provide real size,location,feeding arteries and draining veins of AVM,and apply NEPM to evaluate the nerve function,assess the qualitative and quantitative flow rate of AVM and surrounding blood vessels by Doppler ultrasonography and fluorescein angiography,and reveal opography of AVM.Operative techniques were used including embolization,feeding artery control.Results Eighty-six cases of AVM were resected successfully under mutitechnology.Following-up demonstrated excellent neurological outcomes in 70 cases,nine case had mild disability,five cases had severe disability,two dead cases.DSA shows resected completely,and long-term follow-up was still in progress,conclusion Multi-technology combined microsurgical techniques which can effective improve the outcomes of intracranial arteriovenous malformations.

Objective To study the effects of TGFβ-activated kinase-1 (TAK1)mediated cell autophagy after global cerebral ischemia-reperfusion (IR ) in rats.Methods Seventy-two male Kunming rats were randomly divided into six groups:control group (group C),sham operation group (group S),ischemia-reperfusion group (group IR),TAK1 shRNA lentivirus group (group T),nega-tive lentivirus group (group Y)and normal saline group (group NS)(n = 12 each).The rats in groups T,Y and NS received cerebral ventricles injection of TAK1 shRNA lentivirus,negative lenti-virus and normal saline 10 μl two weeks before preparing animal model.Using thread embolism of the right middle cerebral artery occlusion (MCAO)to cause focal ischemia for 2 h and released for 24 h for reperfusion in groups IR,T,Y and NS.The common carotid arteries were separated but not liga-ted in group S,the rest of the procedure as the same as group IR.The rats of each group were evalua-ted by neurological severity scores (NSS)24 h after reperfusion,the cerebral infarct volume was measured with the method of TTC and the expression of TAK1,LC3Ⅱ/LC3Ⅰ,Beclin1 and p62 pro-tein in rat hippocampus were determined by using Western blot.Results The infarct volume and NSS in groups IR,T,Y and NS were significantly higher than those in group C (P <0.05).The infarct volume and NSS in group T were significantly lower than those in group IR (P <0.05).TAK1 pro-tein of hippocampus in groups IR,Y and NS was significantly higher than that in group C (P <0.05).TAK1 protein of hippocampus in group T were significantly lower than that in group IR (P <0.05).LC3Ⅱ/LC3 Ⅰand Beclin1 protein of hippocampus in groups IR,T,Y and NS were signifi-cantly higher than those in group C,and the p62 protein of hippocampus in groups IR,T,Y and NS was significantly lower than that in group C (P <0.05).The LC3 Ⅱ/LC3 Ⅰand Beclin1 in group T were significantly lower than those in group IR,and the p62 protein of hippocampus in group T was significantly higher than that in group C (P < 0.05 ).Conclusion TAK1 mediated cell autophagy takes part in the mechanism of brain ischemia-reperfusion injury in rats.

Objective To study the expression of adiponectin in the peripheral blood of patients with rheumatoid arthritis (RA),and discuss its role in the pathogenesis of RA.Methods Fifty-three patients with RA and 31 healthy controls were enrolled in the study.The level of adiponectin in the peripheral blood were detected using enzyme-linked immunosorbent assay (ELISA) method and the relation with clinical and laboratory parameters were analyzed.The stastistical analysis was carried out with independent t-test,one-way ANOVA and Spearman correlation analysis.Results The level of the adiponectin in rheumatoid arthritis patients [(12±8) μg/ml] was higher than control group [(8±4) μg/ml],with statistically significant difference (t=3.694,P=0.002).The level of adiponectin of the experimental group was negatively correlated with rheumatoid factor (RF),anti-cyclic centrullinated peptides (anti-CCP) (r=-0.301,r=-0.290,P＜0.05) and positively correlated with the levels of globulin (GLO),IgA and IgM (r=0.492,r=0.431,r=0.485,P＜0.05),while no significant correlation (P＞0.05) with erythrocyte sedimentation rate (ESR),C reactive protein (CRP),disease activity score in 28 joints (DAS28),Body mass index (BMI),anti streptolysin O (ASO),IgG,liver and kidney function,triglyceride (TG) and cholesterol (TC),C3,C4 levels and prothrombin time (PT) series.The level of adiponectin of the whole experimental group was not significantly correlated with BMI (r=0.142,P＞0.05),but negatively correlated with BMI (r=0.197,P＜0.05) in patients with 10-15 years courses of disease.Conclusion Related to RF and CCP,adiponectin may be involved in the pathogenesis of chronic inflammation of RA.

Objective To evaluate the feasibility of intra-utero fetal lamb surgical repair. Methods Six twin lambs underwent surgery intra-utero at 112 days of gestation (term 140～160 days). After maternal laparotomy and Hysterotomy, fetal lamb′s toe was excised or its cleft lip was repaired in one of twin. Results At 30 to 32 days post operation,five lambs were spontamcously delivered and the other was cesarean delivery to full term gestation. Fetal wounds healed without inflammation and scar formation. Conclusions The methods of fetal lamb intro utero surgical repair is feasible.