Objective To investigate the relation between the expression of HSP70 and p57kip2 in C, CT and Enneking surgical classifi-cation by detecting expression of HSP70 and p57kip2. Methods 30 cases of GCT were collected, including surgical operation specimens and 13 cases of osteochondroma were taken as control group. The expression of HSP70 and p57kip2 were detected, and the relation between the ex-pression of HSP70 and p57kip2 and Enneking surgical classification and prognosis of GCT were analyzed. Results With the increase of tumor Enneking surgical grades, the positive rate of HSP70 was increased and the negative rate of p57kip2 was decreased. Expression rates of HSP70 were 22. 2%, 88.9% ,100% in grades of 1～3 and expression rates of p57kip2 were 88. 9%, 88.9%, 33.3% in grades of 1～3. There was a negative correlation between HSPTo and p.57kip2 expression. Conclusions HSP70 and p57kip2 may play a role in the genesis, and develop-ment of giant cell tumor of bone, and it can be helpful for surgical classification and prognesis of GCT.

Objective: To investigate the relationship between peripheral blood absolute lymphocyte count (ALC) and patients with multiple myeloma (MM). Methods:We obtained clinical features and follow-up data of 102 patients with MM to analyze the prog-nostic value of peripheral blood ALC. Results:Patients with ALC>1.51×109/L were designated as group 1, whereas patients with ALC<1.51×109/L were designated as group 2. Group 1 had significantly lower age as well as concentrations of lactate dehydrogenase (LDH) andβ2-MG than group 2 (P<0.05). The overall survival (OS) of group 1 was significantly higher than group 2 (P<0.05). Sex, ALB, Du-rie-Salmon stage, isotype, subgroup, and stage according to the International Staging System in group 1 were not significantly different compared with group 2 (P>0.05). Conclusion:Lower ALC is a poor prognosis factor. ALC may be an important prognostic factor of MM.

Objective To assess the effect of rhein on diabetic nephropathy in rats with type 2 diabetes mellitus. Methods Diabetes was induced by high-lipids and high-sucrose diets (20% sucrose, 10% lard, 2.5% cholesterol, 1% cholic acid and 66.5 % regular chow, w/w) for 1 month and then intraperitoneal injection with 25 mg/kg streptozoticin(STZ) in female inbred Wistar rats. Rhein was continuously given 100 mg?kg-1?day-1 for 6 months 1 week after STZ injection in rhein-prevented group, and 1 month after STZ injection in rhein-treated group. Blood and urinary biochemistry and renal morphology were evaluated at divers times. Results Rhein ameliorated hypertriglyceridemia and hypercholesterolemia, but had few effect on the level of plasma glucose in both rhein-prevented group and rhein-treated group. Excretion of urinary protein reduced markedly and stable-state plasma glucose (SSPG) level decreased in both groups as compared with diabetic group. Examination of kidney sections from both rhein-prevented group and rhein-treated group showed that the structural lesions of glomeruli including mesangial expansion, diffuse glomerulosclersis and thickening of glomerular basement membrane, as well as artery injury such as arteriolar hyalinosis, atherosclerosis were markedly improved as compared with diabetic group. Morphometry of glomeruli from both rhein-prevented group and rhein-treated group showed that glomerular grow and mesangial hypertrophy occurred in diabetic group were ameliorated. The accumulation of fibronectin examined by immunostaining in glomeruli was reduced in both groups. Conclusion Therapeutic intervention with rhein can halt the progression of diabetic nephropathy and prevent the development of glomerulosclerosis and vascular injuries in this animal model of type 2 diabetes mellitus.

Objective To explore the correlation between membrane targeting of rodent Muc3 C-terminal domain and proteolytic cleavage blockage within its SEA module and N-linked oligosaccharides inhibition.Methods COS-1 cells were transfected with three different expression vectors containing rodent Muc3 C-terminal domain,namely p20,p20t and p20s/a by lipofectAMINE reagent.Inhibition of N-glycosylation of the expressed protein was performed by using tunicamycin.The transfected COS-1 cells(fixed or unfixed) were detected by immunolocalization experiments(anti-V5 and anti-Myc antibody) for the protein expression.Results In fixed COS-1 cells,the expressed product of p20 transfectant detected using both anti-Myc and anti-V5 antibodies was found to localize in perinuclear position and on the plasma membrane.While in the unfixed cells,immunostaining was only confined on cell surface using anti-V5 antibody.The expressed product of p20t transfectant was detected by anti-V5 antibody to localize only in perinuclear region,as observed in a few fixed cells.The distribution of p20s/a fluorescence resembled that of p20 transfectant.Plasma membrane targeting of the non-glycosylated products due to tunicamycin treatment still occurred in transfected COS-1 cells and resembled the glycosylated products.Conclusions The blockage of proteolytic cleavage within C-terminal domain of rodent Muc3 and its inhibition of N-linked oligosaccharides in SEA module cannot affect its membrane targeting.The only apparent requirement for membrane targeting is the transmembrane and/or cytoplasmic tail segments which exist in the C-terminal domains of rMuc3.

Licorice root has been frequently used as antitode in traditional Chinese medicine. As the main active component of Licorice root, glycyrrhetic acid (GA) is mainly metabolized in liver. This study was designed to investigate the in vitro metabolism of GA by human liver microsomes (HLM) and human recombinant cytochrome P450 (CYP) isoforms. The results indicated that GA was metabolized mainly by CYP3A4. The K(m), V(max) and CL(int) of GA in HLM were 18.6 micromol x L(-1), 4.4 nmol x mg(-1) (protein) x min(-1) and 0.237 mL x mg(-1) (protein) x min(-1), respectively. At concentration up to 50 micromol x L(-1), GA inhibited CYP2C19, CYP2C9 and CYP3A4 enzyme activities with the inhibitory potencies up to 50%.

Triptolide (TP) is a major active component in Tripterygium root, but its therapeutic window was very narrow due to its severe multi-organ toxicity. In this work, the effect of TP combined with glycyrrhetic acid (GA) on mRNA expression and activity of four cytochrome P450 (CYP) enzymes in rat liver was studied after intragastric administration of TP (0.05, 0.3 and 0.6 mg x kg(-1) x day(-1)) and TP (0.6 mg x kg(-1) x day(-1)) combined with GA (30 mg x kg(-1) x day(-1)) for 7 consecutive days. Compared with the control, the high dose of TP significantly up-regulated the mRNA expression levels of CYP2E1, 1A2, 3A1 and 2C11, the co-administration of TP and GA further up-regulated the mRNA expression levels of CYP3A1, 2C11 and 2E1 as compared with the high dose of TP. Meanwhile, TP at high dose and combined with GA significantly increased CYP3A-associated testosterone 6beta-hydroxylation activity (2.2-fold and 4.1-fold, respectively) as compared with the control. Because TP is mainly metabolized by CYP3A2 in male rats, the present work indicated that TP-induced increase of CYP3A activity might be an important reason for the rapidly metabolic clearance of TP in rat liver, and GA can reduce the hepatotoxicity of TP by promoting its hepatic metabolic clearance. Furthermore, the results also suggest that the drug interactions might be occurred when TP and GA were co-administered with other CYP3A substrate drug.

Objective To explore the effect of multiple positioning procedure for prolapse and hemorrhoids (PPH) in treatment of connective tissue type mixed hemorrhoids,and compare the results between PPH and Milligan-Morgan surgery.Methods One hundred and sixteen patients with connective tissue type mixed hemorrhoids were divided into treatment group (62 cases) and control group (54 cases)according to random digits table method.The patients in treatment group received multiple positioning PPH,and the patients in control group received Milligan-Morgan surgery.The operative time,intraoperative blood loss,postoperative pain score,anal margin edema,wound healing time,perianal scar,anorectal stenosis,anal discharge and anorectal resting pressure were evaluated and compared between 2 groups.Results The operative time and intraoperative blood loss in treatment group were significantly lower than those in control group:(15.0 ± 2.3) min vs.(35.0 ± 3.4) min and (5.0 ± 2.1) ml vs.(15.0 ± 3.2) ml,and there were statistical differences (P ＜ 0.05).The postoperative pain score and wound healing time in treatment group were significantly lower than those in control group:(4.83 ± 0.62) scores vs.(7.82 ± 0.37) scores and (8.2 ± 2.6) d vs.(17.4 ± 3.8) d,the rates of anal margin edema,perianal scar and anorectal stenosis in treatment group were significantly lower than those in control group:8.1％ (5/62) vs.37.0％ (20/54),0 vs.29.6％ (16/54) and 1.6％(1/62) vs.16.7％ (9/54),and there were statistical differences (P ＜ 0.05 or ＜ 0.01).The postoperative anorectal resting pressure was significantly lower than preoperative in control group:(13.80 ± 4.20) kPa vs.(17.20 ± 5.87) kPa,and there was statistical difference (P＜ 0.05).One patient (1.6％,1/62) in treatment group occurred anal discharge,and 10 patients (18.5％,10/54) occurred anal discharge in control group.The rate of anal discharge in treatment group was significantly lower than that in control group,and there was statistical difference (P ＜ 0.01).Conclusions Multiple positioning PPH is effective for the treatment of connective tissue type mixed hemorrhoids.It improves the controllability of the amount of removal and the excision site.It decreases the incidence of anal margin edema,perianal scar and anal discharge scar,which provides an effective protection for the anal function.

A mouse model for acute hepatitis B virus (HBV) infection was established by using the hydrodynamical injection of mouse tail vein, in which the immunocompetent BALB/c mice were hydrodynamically injected with a competent replication plasmid pAAV-HBV1.2 having 1.2 fold over-length of HBV DNA. On day 1, 2, 4, 6 and 8 after injection, the levels of HBsAg, HBeAg and HBV DNA in blood serum were detected by using ELISA and fluorogenic quantitative PCR assay (FQ-PCR). And on day 8. HBsAg and HBeAg in liver tissue were assayed by immunohistochemical staining. It was found that HBsAg in blood serum could be detected on day 1 after infection in 14 of 16 mice (85.7%) injected with pAVV-HBV1.2 by using ELISA assay and the peak levels of HBsAg and HBeAg were attained during the first day after injection and then it dropped down gradually up to day 8 following injection. The titer of HBV DNA in blood serum attained its peak on day 2 and maintained a high level later on. On day 8 after injection, its titer was 1.9×10~4 copies/mL. The percentage of HBcAg-positive hepatocytes and HBsAg-positive hepatocytes in liver tissues were 5% and 2% respectively. Thus, by using the hydrodynamic injection with the competent replication plasmid, a mouse model for acute HBV infection is successively developed.

Advanced studying doctors play important roles in the clinical services, and how to train them to improve training quality is worth investigating. We classified them into three types such as the clinical skills-improved, the special skills-trained and clinical knowledge eextensively-spread, then employed the individual teaching methods and emphasized the medical ethics during the training, which is not only beneficial to us, but also of great importance and necessity to advanced studying doctors themselves.

In order to promote teaching,this paper analyses the current situation of the teaching and discusses its teaching purpose,contents and methods on reproductive health care.