Objectives To observe the effects of glucose at different concentrations on the expression of PPAR? in the rat insulinoma INS-1 cells so as to illustrate the function of PPAR? in the cross-talk of lipid metabolism with glucose metabolism in pancreatic cells. Methods After cultured in RPMI1640 media containing 3, 11 and 20 mmol/L glucose respectively for 1 h, the cells were used to measure the content of intracellular triglyceride. The RNA and nuclear protein of INS-1 cells were extracted, and then the expression of PPAR? mRNA was detected by semi-quantity RT-PCR and the PPAR? protein was analyzed by Western blotting. Results With the increment of the concentrations of glucose, the content of intracellular triglyceride in the cultured cells was elevated, while the expressions of PPAR? mRNA and protein were both down-regulated. Conclusion Glucose promotes triglyceride deposition in INS-1 cells, and the down-regulation of PPAR? presumably contributes to the lipid deposition in INS-1 cells during hyperglycemic states.

Objective To construct the recombinant adenovirus vector containing mouse PPAR?,and infect the INS-1 cells.Methods The pCDNA3.0-mPPAR? plasmid was digested with KpnⅠ and EcoRⅤ to obtain full-length coding sequence of mPPAR?,then the mPPAR? cDNA was ligated to the pAdtrack-CMV vector.The plasmid of pAdTrack-mPPAR? was linearized with PmeⅠ,and the fragment was reclaimed and transformed into BJ5183 which contains pAdeasy.After being screened,the extracted plasmid of positive bacteria linearized with PacⅠ was transfected into HEK293 cells with lipofectamine~(TM) 2000 and was identified by the green fluorescence protein(GFP).The harvested virus was amplified in HEK293 cells and infected INS-1 cells.After infection,the expression of PPAR? was proved by GFP expression and Western blotting.Results The recombinant adenovirus vector containing mouse PPAR? was constructed successfully and the titer was 1.5?10~(10) pfu/ml.The PPAR? expression in INS-1 cells infected by the virus was much higher than the controls.Conclusion The constructed recombinant adenovirus vector containing mouse PPAR? provides a potent tool to investigate its biological function in pancreatic islets and other tissues.

ObjectiveTo observe the curative effect of pulsed electromagnetic fields (PEMF) treatment system on post -menopausal osteoporosis.Methods16 patients with post-menopausal osteoporosis were treated by Union-2000 PEMF Osteoporosis Trea tment System. The bone mineral density (BMD) and grades of lumbago were measured before and after the treatment.ResultsAfter one p eriod of the treatment, BMD had increased in a field of no statistic significanc e (P>0.05) and lumbago died away in all cases.Conclusions PEMF treatment system is likely to be a practicabl e therapy for post-menopausal osteoporosis.

Objective To evaluate the treatment effect of negative pressure wound therapy ( NPWT) followed by ultrasonic debridement surgical system ( UDSS) in patients with diabetic foot. Methods Forty-seven diabetic foot ulcer patients( WagnerⅡ~Ⅲ) were divided into two groups,of which 26 patients treated with UDSS combined NPWT,and 21 patients treated with traditional surgical debridement combined NPWT were control group. Cure rate, markedly effective rate and adverse reaction and complication were compared between two groups. Results Compared with control group,the experiment group had higher markedly effective rate in the first week(P<0. 05),and healing rates were higher in the 2th,4th,6th,12th weeks (P<0. 05). There were no differences in the adverse reactions and complications between the two groups. Conclusion UDSS combined with NPWT can accelerate wound cure,may play an important role for the treatment of diabetic foot ulcer.