Objective:To explore the job preference and willingness to pay of resident training physicians in Chengdu, China.Methods:The questionnaire was designed by means of the discrete choice experiment. The questionnaire contains the basic information of the survey object and the discrete choice set (including workplace, working intensity, monthly salary, staffing of public institution, and career development, each with several levels). A total of 116 resident training physicians recruited by three standardized residents training centers in Chengdu were selected to conduct the questionnaire survey, and grouped based on their identity and major. The mixed logit model was used to analyze job preferences and willingness to pay of resident training physicians.Results:Except for career development, other four attributes had statistically significant effects on job selection of resident training physicians ( P<0.05), of which working intensity was the most influential attribute, with the highest willingness to pay. The subgroup analysis results showed that staffing of public institution was concerned by clinical postgraduates and resident training physicians in non-scarce majors. Conclusions:Economic and non-economic factors both affect the job preferences of resident training physicians, while working intensity is the most important factor. Resident training policy should focus on adjusting the scale and type of resident physician enrollment, and strengthen humanistic care and career education of resident training physicians.

Objective:To explore the job preference and willingness to pay of resident training physicians in Chengdu, China.Methods:The questionnaire was designed by means of the discrete choice experiment. The questionnaire contains the basic information of the survey object and the discrete choice set (including workplace, working intensity, monthly salary, staffing of public institution, and career development, each with several levels). A total of 116 resident training physicians recruited by three standardized residents training centers in Chengdu were selected to conduct the questionnaire survey, and grouped based on their identity and major. The mixed logit model was used to analyze job preferences and willingness to pay of resident training physicians.Results:Except for career development, other four attributes had statistically significant effects on job selection of resident training physicians ( P<0.05), of which working intensity was the most influential attribute, with the highest willingness to pay. The subgroup analysis results showed that staffing of public institution was concerned by clinical postgraduates and resident training physicians in non-scarce majors. Conclusions:Economic and non-economic factors both affect the job preferences of resident training physicians, while working intensity is the most important factor. Resident training policy should focus on adjusting the scale and type of resident physician enrollment, and strengthen humanistic care and career education of resident training physicians.

BACKGROUNDSteroids inhibit osteogenic differentiation and decrease bone formation while concomitantly inducing adipose deposition in osteocytes. This leads to the fatty degeneration and necrosis of bone cells commonly seen in osteonecrosis of the femoral head. The peroxisome proliferator-activated receptor-γ (PPARγ) is an adipogenic transcription factor linked to the development of this disease and responsible for inducing adipogenesis over osteogenesis in bone marrow mesenchymal stem cells (BMSCs). The aim of this study was to assess whether adipogenic differentiation could be suppressed, and thus osteogenic potential retained, by inhibiting PPARγ expression in BMSCs.

METHODSCells from the bone marrow of New Zealand rabbits were treated with 10(-7) mol/L dexamethasone and infected with one of three small interference RNA (siRNA) adenovirus vectors (S1, S2, and S3) or non-targeting control siRNA (Con) and compared with dexamethasone-treated (model) and untreated (normal) cells. Cells were grown for 21 days and stained with Sudan III for adipocyte formation. At various time points, cells were also assessed for changes in PPARγ, osteocalcin (OC), Runx2, alkaline phosphatase (ALP) activity, and triglyceride (TG) content.

RESULTSDexamethasone-treated model and control groups showed a significant increase in fatty acid-positive staining, which was inhibited in cells treated with PPARγ siRNA-treated, similar to normal untreated cells. All three siRNA groups significantly inhibited PPARγ mRNA and protein, adipocyte number, and TG content compared with the dexamethasone-treated model and control groups, matching that seen in normal cells. OC and Runx2 mRNA and protein, as well as ALP activity, were significantly higher in cells treated with siRNA against PPARγ, similar to that seen in the normal cells. These osteogenic markers were significantly lower in the dexamethasone-treated cell cultures.

CONCLUSIONSThe siRNA adenovirus vector targeting PPARγ can efficiently inhibit steroid-induced adipogenic differentiation in rabbit BMSCs and retain their osteogenic differentiation potential.

Adenoviridae ; genetics ; Adipogenesis ; drug effects ; genetics ; Animals ; Cell Differentiation ; drug effects ; genetics ; Mesenchymal Stromal Cells ; cytology ; drug effects ; metabolism ; PPAR gamma ; genetics ; metabolism ; pharmacology ; RNA, Small Interfering ; Rabbits ; Steroids