ABSTRACT
Objective To explore the effect of high-dose methylprednisolone combined with femoral nerve block on postoperative analgesia and recovery following total knee arthroplasty(TKA).Methods We performed a randomized,placebo-controlled,double-blind study. 60 patients were divided into a study group(groupMF)and a control group(F group).Patients in group MF received high-dose methylprednisolone combined with femoral nerve block. Patients in group F received equivalent saline combined with femoral nerve block. The rest pain and activi-ties pain,uses of analgesic medication,24 h CRP,time to ambulation,and adverse reactions after operation were recorded.Results There were significant differences in the rest pain and activities pain at hours 6,12,24,and 48,uses of analgesic medication,24 h CRP,time to ambulation and PONV(P < 0.05),group MF was better than group F.There was no significant difference in other adverse reactions(P>0.05).Conclusions High-dose methylprednisolone combined with femoral nerve block can effectively relieve pain and reduce uses of analgesic drugs after TKA,with less systemic inflammatory response and PONV.It is helpful for the early recovery in knee function.
ABSTRACT
Objective: To investigate the effect of HMGB1 small interfering RNA (siRNA) on the proliferation, cell cycle and apoptosis of human endometrial cancer cell line HEC-1A, and itspossible molecular mechanism. Methods: Lentivirus vector with HMGB1 shRNA was constructed and infected the endometrial cancer cell line HEC-1A. After viral infection for 72 h, real time PCR and Western blot were performed to investigate HMGB1 mRNA and protein expression. The cell proliferation was determined with methyl thiazolyl tetrazolium (MTT) method. Flow cytometry was performed to analyze the cell cycle progression of propidium iodide (PI)-stained HEC-1A cells and the apoptotic rate of annexinV/PI-stained cells. Western blot was used to detect the protein expression of AKT, pAKT and CyclinD1. Results: Lentivirus vector with HMGB1 shRNA inhibited the mRNA (P<0.05) and protein (P<0.01) expression of HMGB1 in the cell line HEC-1A. The MTT assay demonstrated that HMGB1 knockdown signiifcantly reduced the cell proliferation. FCM results showed that HMGB1 knockdown significantly resulted in the disruption of the cell cycle at G0/G1 phase and the induction of apoptosis. hTe apoptotic rate was (17.89±0.23)%, (4.69±0.20)% and (4.62±0.17)% in the HMGB1 knockdown group, the blank group and the negative group respectively. There was signiifcance difference between the 3 groups (P<0.01). hTe protein expressions of pAKT and cyclinD1 were down-regulated atfer the HMGB1 knockdown for 72 h. Conclusion: Knockdown of HMGB1 expression can significantly inhibit the proliferation and induce the cell cycle arrest and apoptosis in the endometrial cancer cell line HEC-1A. PI3K/AKT pathway and down-regulation of the protein expression of cyclinD1 may be involved in its therapeutic mechanism.