Objective To survey the current situation and influencing factors of willingness to attend assistant general practitioner training among junior medical college students in Yunnan Province.Methods A questionnaire survey and interview on the willingness to attend the training of assistant general practitioner was conducted from May 2017 to June 2017 in Yunnan Province,1 800 students from 6 junior medical colleges were selected as participants by stratified cluster sampling method.Results A total of 1 800 questionnaires were distributed and 1 710 were collected,of which 1 634 were valid with a recovery rate of 95.00％ and an effective rate of 95.56％.The results showed that 43.21％ (706/1 634) participants were not aware of the relevant training policies,while there were significant differences among participants in the different grades and types of college (public or private) (Z=-0.899,8.658,-13.954;P＜0.05);83.17％ (1 379 / 1 634) participants were willing to sign up for an assistant general practitioner training after graduation,while there were significant differences among participants in different ethnic groups,grades,household register sites,types of college,and family income (P＜0.05).Total of 1 300 (79.56％) chose to work as a general practitioner in rural grassroots institutions after graduation,and 984 (60.22％) chose to become a specialist after graduation.Unconditional logistic regression analysis showed that the types of medical college,attitude towards the training policy,the intension to work in grassroots level or to work in private hospitals were influencing factors for willingness to attend the assistant general practitioner training among medical students(B=1.654,3.764,1.361,-0.569;P＜0.05).Conclusion The survey shows that the policy awareness and the willingness to attend assistant general practitioner training for student in junior medical college in Yunnan Province are not high,and the policy publicity and the career guidance need to be strengthened.

Objective: To detect the hemodynamic mechanism of the novel endovascular stent on complicated abdominal aortic aneurysms by Computational Fluid Dynamics(CFD) firstly, and then compare the effect of the novel endovascular stent and the streamliner multilayer flow modulator(SMFM) stent. Methods: All medical images were obtained by computed tomography. A semiautomatic segmentation protocol within Mimics(v17.0; Materialise, Leuven, Belgium) was used to extract the threedimensional aortic aneurysms. The stents was generated numerically and fitted along the aortic aneurysms. The lumen volume represented the fluid domain that was discretised in smaller volumes, which defined a mesh within the ICEM software(Ansys ICEM CFD v15.0). Hemodynamic analysis was performed with software Fluent 16.0. Results: Both kinds of stents can change the pattern of flow distribution. Compared with SMFM, the novel endovascular stent can significantly reduce the flow velocity in aneurysms, the shear force and the pressure on the aneurysms wall.What’s more, the flow velocity of the branch artery was accelerated by the novel endovascular stent. Conclusion The novel endovascular stent can significantly reduce the flow velocity in aneurysms, the shear force and the pressure on the aneurysms wall, and acceleratethe the flow velocity of the branch artery.

The ubiquitin-proteasome system (UPS) dedicates to degrade intracellular proteins to modulate demic homeostasis and functions of organisms. These enzymatic cascades mark and modifies target proteins diversly through covalently binding ubiquitin molecules. In the UPS, E3 ubiquitin ligases are the crucial constituents by the advantage of recognizing and presenting proteins to proteasomes for proteolysis. As the major regulators of protein homeostasis, E3 ligases are indispensable to proper cell manners in diverse systems, and they are well described in physiological bone growth and bone metabolism. Pathologically, classic bone-related diseases such as metabolic bone diseases, arthritis, bone neoplasms and bone metastasis of the tumor, etc., were also depicted in a UPS-dependent manner. Therefore, skeletal system is versatilely regulated by UPS and it is worthy to summarize the underlying mechanism. Furthermore, based on the current status of treatment, normal or pathological osteogenesis and tumorigenesis elaborated in this review highlight the clinical significance of UPS research. As a strategy possibly remedies the limitations of UPS treatment, emerging PROTAC was described comprehensively to illustrate its potential in clinical application. Altogether, the purpose of this review aims to provide more evidence for exploiting novel therapeutic strategies based on UPS for bone associated diseases.