ABSTRACT
Objective To explore the effectiveness of a myoelectricity-driven hand robot on the recovery of hand motor function early after a stroke.Methods Thirty stroke survivors were randomly assigned to either a control group (n=15) or an experimental group (n =15).Both groups received routine rehabilitation exercises,while the experimental group additionally received hand training using a robotic hand exoskeleton.Before and after 4 weeks of treatment,the motor function of the wrist and fingers in both groups were measured using the Fugl-Meyer assessment.Spasticity in the index,middle,ring and little fingers was quantified using the modified Ashworth scale.The muscle force of the fourth finger,thumb and all of the fingers during maximum voluntary extension and flexion were recorded using the robot's surface electromyography system.Results Significant increases in the average Fugl-Meyer scores in both groups were observed after 4 weeks of treatment,but the experimental group's average score was by then significantly higher than that of the control group.The experimental group's average Ashworth score and the average sEMG amplitudes were also significantly better than those of the control group.Conclusion Supplementing routine rehabilitation exercises with a hand robot can improve hand motor function and muscle force significantly,as well as relieving hand spasticity early after a stroke.
ABSTRACT
Objective To study the effects of recombinant adenovirus vector containing vp3 gene (AdAFPvp3) on c57BL/6 murine hepatocellular carcinoma model. Methods The titers of adenovirus vectors AdAFPvp3 and AdCMV-eGFP were detected. c57BL/6 murine hepatocellular carcinoma models were reproduced by subcutaneous inoculation of murine Hepa1-6 cells, and tumors were monitored for their generation rates. Twenty-four mice were randomly divided into adenovirus vector AdAFPvp3 group, adenovirus vector AdCMV-eGFP control group and PBS control group (8 each) when the tumors grew into 5mm in diameter. AdAFPvp3 (5?108pfu/100?l), AdCMV-eGFP (5?108pfu/100?l) and PBS (100?l) was intratumorally injected, respectively, in the three groups every other day for 2 times. The volume of tumor and the presence of adverse effects were observed. Seven days after treatment, all mice were sacrificed for evaluation of antitumor effect. Tumors, livers and spleens were all harvested for routine pathological examination. At the same time, the way of tumor cell death induced by vp3 in vivo was identified by TUNEL. Results The titers of both adenovirus AdAFPvp3 and adenovirus AdCMV-eGFP were 5?109pfu/ml. The carcinogenesis rate of hepatocellular carcinoma was 100%. Compared with adenovirus AdCMV-eGFP control group and PBS control group, the volume of tumor was diminished evidently in AdAFPvp3 group after intratumoral injection (P