1.Effect of transforming growth factor beta1 on proliferation and secretion of osteoblasts on porous tantalum/MG63 osteoblast-like cell composites
Haitao PANG ; Hongquan GAN ; Qian WANG ; Yishuang CUI ; Zhenquan LAI ; Guolong ZHOU ; Xiangyu PAN ; Zhiqiang WANG ; Qijia LI
Chinese Journal of Tissue Engineering Research 2016;20(25):3680-3686
BACKGROUND: Previous studies have demonstrated that the Chinese porous tantalum made in China has non-toxicity and good biocompatibility, which can promote osteogenesis. OBJECTIVE: To investigate the effects of transforming growth factor β1 on proliferation, cel cycle and secretion of osteoblasts on porous tantalum/MG63 osteoblast-like cel composites. METHODS: Passage 3 MG63 osteoblast-like cel suspension (1×109/L) was seeded onto the porous tantalum, then the cel composites were inoculated in the medium with 0, 0.5, 5 and 10 μg/L transforming growth factor β1, respectively. The proliferation of osteoblasts was detected by cel counting kit-8 assay at 1-13 days after inoculation; the cel morphology and ultrastructure observed by scanning electron microscope and transmission electron microscopy; and level of col agen type I detected by enzyme-linked immunosorbent assay. RESULTS AND CONCLUSON: 0.5, 5, 10 μg/L transforming growth factor β1 could promote the osteoblast proliferation, and cel proliferation in the 5 μg/L transforming growth factor β1 group was higher than that in the other groups; in the 5 μg/L transforming growth factor β1 group, laminated osteoblasts adhered on the surface and grew into inner of porous tantalum, which extended more pseudopodia toward the scaffold; osteoblasts-secreted matrix could cover the scaffold and numerous rough endoplasmic reticulum, free ribosomes, dense mitochondria, Golgi apparatus as wel as matrix vesicles could be found in the cytoplasm. In addition, the level of col agen type I in the 5 μg/L transforming growth factor β1 group was significantly higher than that in the other groups (P < 0.05). These results indicate that transforming growth factor β1 can promote proliferation, and col agen type I secretion of osteoblasts on porous tantalum/MG63 osteoblast-like cel composites, and the optimum mass concentration of transforming growth factor β1 is 5 μg/L.
2.The role of the hamstrings in stabilizing a knee with ACL deficit
Yi WANG ; Qirong DONG ; Jianming XU ; Hongquan PANG ; Zhigao JING ; Jianbing ZHU ; Jinjie TIAN
Chinese Journal of Physical Medicine and Rehabilitation 2020;42(7):623-627
Objective:To investigate the effect of enhancing the strength of the hamstring on the stability of the knee joint.Methods:Thirty patients with anterior cruciate ligament (ACL) tears were randomly divided into a training group ( n=15) and a control group ( n=15). After the injury′s edema stage, all of the subjects received the standard 6-stage rehabilitation training for ACL injury, including isokinetic exercise, isometric tension and contraction exercise, single or bipedal jumping, proprioception exercises and cardiovascular exercise. On the basis of that standard training, additional hamstring strengthening training was given to the training group. It involved three sessions of weight-bearing flexion of the knee joint six to eight times, at least five times a week for three months. All of the subjects underwent the passive relaxation test (PRT), knee function scoring (Lysholm scores) and weight-bearing MRI before and within 1 month after the training. Anterior shift of the tibia (TAS) was measured using weight-bearing magnetic resonance imaging (MRI). Results:Before the training there were no significant differences between the groups in terms of average PRT or Lysholm scores. After the training, the average PRT score in neither group had improved significantly. The average Lysholm scores of the training and control groups were not significantly different either, though both groups′ averages had improved significantly compared with before the training. The average tibial shifts were also significantly smaller than before the training, with the training group′s average significantly smaller than that of the control group.Conclusion:Increasing hamstring muscle strength can reduce tibial anteversion in the weight-bearing upright position and improve the stability of the knee joint after ACL injury.
3.Development of Self Training Device for Lung Function Compliance Guided by Meridians.
Ming QI ; Haiying PANG ; Luyang JIA ; Ying FANG ; Aimin WANG ; Hongquan SU ; Xiujuan XIE ; Haiying WANG ; Wenru ZHAO
Chinese Journal of Medical Instrumentation 2021;45(5):503-506
OBJECTIVE:
To develop a self deep breathing training device which can improve lung function compliance and blood oxygen saturation.
METHODS:
The device consists of four parts:flow tube, measuring cylinder, mobile phone holder and meridian guidance audio-visual synthesis training software. The flow tube measures the flow rate of inhaled gas, the metering cylinder measures the total amount of inhaled gas, and the mobile phone rack is equipped with a mobile phone storing the meridian guidance audio-visual synthesis training software.
RESULTS:
The device is reasonable in structure and flexible in operation, which can meet the requirements of self deep inspiration training under the guidance of training module.
CONCLUSIONS
Deep inspiration training under the guidance of guidance training module can form "deep and slow" abdominal breathing, and then improve lung function.
Cell Phone
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Lung
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Meridians
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Software