Objective:To investigate the inhibitory effect of Epibueropyridinium A on aldose reductase.Methods: Aldose reductase was extracted from cattle crystalline lens.Besides Epibueropyridinium A,the reactive system also contained DL-glyceraldehyde,aldose reductase,and NADPH.The activity changes of aldose reductase were detected at 340 nm.Epalrestat was taken as the positive control.The inhibitory type,Ki and IC_(50) were determined by double reciprocal plot,quadratic drawing,and drawing of inhibitor's concentration to inhibitory ratio,respectively.Results: Epibueropyridinium A significantly inhibited the activity of aldose reductase in a competitive manner,with IC_(50) being 4.2 ?g/ml and Ki being 4.88 ?g/ml.Conclusion: Epibueropyridinium A is competitive inhibitor of aldose reductase.

Objective To evaluate the advantages of nasal septum deviation with three lines reduce tension septorhinoplasty under endoscopy.Methods Three lines reduce tension septorhinoplasty of 48 cases were compared with nasal septum submucous resection(Killian) of 43 cases.Results Followed-up for 3 months to 1 year postoperation,study group were remedied and no clinical symptoms,no complications,control group had septal perforation of 1 case,nasal synechia of 2 cases,saddle nose of 1 case.The incidence of two groups postoperative complications had statistically significant difference.Conclusion Compared with Killian,three lines reduce tension septorhinoplasty was easy to stuty and have the advantages of micro-invasion,safety and efficiency,and was favorable recovery nasal cavitysinuses physiological functions.

Objective:To study the pharmacokinetics,thissue distribution and secretion of nerve growth factor(NGF)in mice.Methods:The conecntration of NGF in various body fluids and tissue were determined by isotope tracer combined SDSPAGE method.Results:The plasma concenmtration-time curve was in accordance with the two-compartment pharmacokinetic model.The elimation half-life(t1/2β)was 3.1.The half-life of distribution(t1/2ka)was 5min.Tpeak was 25 min.AUC was 72.4 mg·kg-1·h-1.The concentrations of NGF were high in thyroid,blood,submaxillary glands,superior cervical ganglion,adrenasl and kidneys.Conclusion:NGF has a wide distribution,high tissue concentrationa nd excrtet mainly through the urine.