AIM:To investigate the effects of rhTGF-?1 and TGF-?1 gene transfection on the proliferation of cultured rabbit corneal endothelial cells in vitro.METHODS:Cell growth induced by various concentrations of rhTGF-?1 was determined by MTT proliferation assay.Under the induction of liposomes,recombinant pSecTag2-TGF-?1MP vectors were transferred into the corneal endothelial cells.Morphological changes of transfected cells were observed by HE staining.The expression levels of TGF-?1 were assessed by ELISA.Cell cycle analysis was assessed by flow cytometry.DNA fragment analysis was used to confirm the presence of apoptosis.RESULTS:rhTGF-?1 in concentrations of 5-20 ?g/L showed a significant suppressive effect on the proliferation of corneal endothelial cells,0.5-1 ?g/L had no effect,0.05-0.1 ?g/L facilitated cell growth,as compared with negative controls.The morphous of transfected corneal cells had no significant abnormality compared with normal cells.According to the result of ELISA,the concentration of TGF-?1 in the supernatant was calculated to be(98?3)ng/L.Flow cytometry assay showed that S and G2/M phase of transfected cells decreased significantly compared with that of control group,but the cell cycle recovered normally after adding 10 ?g/L EGF into the culture medium.Agarose electrophoresis didn't show marked ladders in transfected group.CONCLUSION:Effects of rhTGF-?1 on the proliferation of corneal endothelial cells are different with various concentrations.TGF-?1 gene transfection shows suppressive effect on the proliferation of cultured corneal endothelial cells,but does not induce cell apoptosis.EGF is the antagonist of this suppressive effect.

Objective:To investigate the effect of the new nanomaterials,polyamidoamine dendrimers PAMAM-D,mediated foreign gene human decay accelerating factor(hDAF) for xenotransplantation transfected pig sperm cells.Methods:PAMAM-D/hDAF cDNA compounds were made.The compounds were divided into 0.2 μg,0.4μg,0.6μg,0.8 μg and 1.0μg groups (each group adding corresponding dose of PAMAM-D in accordance with the N/P ratio 10:1,20:1,40:1),then were digested by restriction enzymes.The compounds were incubated with washed pig sperm cells.Then the transfection efficiency was detected by in situ hybridization in the different groups.Results:The PAMAM-D molecule can prevent electrophoretic migration of DNA in the compound.After digested the compounds by restriction enzymes,DNA can not be degraded.The transfection efficiency was different in different groups.Among the total,the efficiency was higher in both groups of 0.4 μg and 0.6μg than that of others.The top was the group of 0.4 μg linear plasmid plus PAMAM-D when the N/P ratio was 20:1(47.5%±O.2%,167% vs control group).Conclusion:PAMAM-D can improve the efficiency of exogenous gene transfeeted pig sperm cells,which can reinforce the stable binding of exogenous DNA to sperm cells.

Objective: To investigate the possibility of heart rate as an optimum index for evaluating physical labor intensity. Methods: From September to October, 2015, a total of 111 male young adults were selected as study subjects. A cycle ergometer was used for exercise at different intensities (20, 40, 60, 80, 100, 120, 140, 160, and 180 W) , and the exercise at each intensity lasted for 6 minutes. The subjects wore the K4b2 portable cardiopulmonary function testing instrument for the real-time monitoring of heart rate (HR) , pulmonary ventilation volume (Ve) , oxygen consumption (VO₂) , and energy metabolic rate (E) . The origin software was used for correlation and regression analyses of HR, Ve, VO₂, and E collected at different intensities to establish Ve-HR, VO₂-HR, and E-HR regression equations. Results: At different intensities, HR was positively correlated with Ve, VO₂, and E (r=0.8985, 0.8733, and 0.8973, all P<0.01) . There was a significant difference in the R² value of Ve-HR, VO₂-HR, and E-HR regression equations (R²=0.8070, 0.7625, and 0.8049, all P <0.01) . The validation results showed that there was no significant difference between the calculated values and the measured ones (P>0.05) . Conclusion HR can replace Ve, VO₂, and E and be used as an optimum index for evaluating physical labor intensity.

Objective To explore the current situation and influencing factors of knowledge-attitude-practice (KAP) on early rehabilitation among elderly patients with fracture so as to provide a reference for improving rehabilitation nursing of fracture. Methods A total of 200 elderly inpatients with fracture at Liyuan Hospital of Tongji Medical College of Huazhong University of Science and Technology were selected by convenience sampling from July 2016 to Feburay 2017. The current situation of KAP of elderly patients with fracture were investigate by the self-designed early rehabilitation KAP questionnaire for fracture patients. The simple correlation and multiple linear regression was used to analyze the influencing factors of rehabilitation among elderly patients with fracture. Results The average score of knowledge, attitude and activity behavior on early rehabilitation of elderly patients with fracture was (62.45±1.32), (85.22±1.09) and (68.90±0.78). Simple correlation showed that there were statistically significant differences in the scores of knowledge, attitude and activity behavior of elderly patients with fracture among different education background, the history of fracture, length of hospital stay and whether they received guidance related to fracture (P<0.05). Multiple linear regression revealed that the independent influencing factor of the score of knowledge,attitude and activity behavior on early rehabilitation of elderly patients was the length of hospital stay, education background and whether they received guidance related to fracture respectively (R2=0.594, 0.229, 0.587). Conclusions Elderly patients with fracture were with the low awareness rate of knowledge on early rehabilitation nursing and the low compliance of self-rehabilitation behavior. Nurses in department of orthopedics should improve the special knowledge and skills on rehabilitation and provide a multilevel and multiform guidance of early rehabilitation by combining with the charactertics of low compliance of elderly patients so as to help elderly patients improve the knowledge level of early rehabilitation and promote early rehabilitation practice.

ObjectiveTo provide targeted, systematic and personalized rehabilitation guidance for orthopedic patients by building a mobile internet platform. MethodsTotally 210 orthopedic admitted in the Department of Orthopedics, Union Hospital of Tongji Medical College of Huazhong University of Science &Technology between June and September 2017 were selected using purposive sampling and divided into the treatment group (n=105) and the control group (n=105) according to the random number table. Patients in the control group received conventional guidance at discharge and telephone or home follow-up visit once every two weeks after discharge, while patients in the treatment group received conventional guidance at discharge and continued rehabilitation guidance via the mobile internet platform after discharge. Activity of daily life (ADL), compliance with continued rehabilitation guidance and patient's satisfaction were compared between the two groups 1 month and 3 months post intervention. ResultsThe ADL of the control group and the treatment group 1 month post intervention scored (66.08±3.01) and (72.00±2.66) respectively; and the ADL of the two groups 3 months post intervention scored (74.23±2.82) and (83.67±1.98) respectively (P＜ 0.05). The compliance and satisfaction were higher in the treatment group than in the control group (P＜ 0.05). ConclusionsPersonalized, targeted and visualized rehabilitation guidance for orthopedic patients via the mobile internet platform improves patient's compliance with rehabilitation exercise as well as their ADL and satisfaction.

Objective? To understand the status quo of continuing rehabilitation nursing needs of orthopaedic patients after discharge, and to analyze the influencing factors of their rehabilitation needs. Methods? Using convenience sampling method, 210 orthopaedic inpatients from March to June 2017 in a ClassⅢ Grade A hospital in Wuhan were selected. The status quo and influencing factors of patients' rehabilitation needs after discharge were investigated by self-made Questionnaire of Orthopaedic Patients' Continuing Rehabilitation Nursing Needs. Results? The total score of continuing rehabilitation instruction needs of 210 patients was (46.35 ±13.20), 47.2% of them hoped to continue rehabilitation through network communication, 85.9% chose to do rehabilitation at home, 84.8% hoped that the former medical staff would provide continuing rehabilitation instruction, and 83.3% accepted rehabilitation exercises with the help of Wechat public account. Multivariate linear regression analysis showed that education level, disease diagnosis, knowledge of rehabilitation and willingness to guide rehabilitation were independent influencing factors (β=-3.138, 3.162,-3.985,-3.786; P＜ 0.01). Conclusions? Orthopaedic patients have a strong demand for rehabilitation knowledge and exercise. It is suggested that medical staff strengthen continuing rehabilitation nursing exercise and knowledge instruction for orthopaedic patients through the internet Wechat platform.