AIM: To investigate the effect of PMA(phorbol 12-myristate 13-acetate) on the expression of CD18 and the mechanism. METHODS: The technique of quantitative RT-PCR analysis was used to measure the expression of CD18 mRNA in U937 cells treated by PMA. RESULTS: PMA could significantly induce CD18 mRNA expression in a dose and time-dependent manner. The induction effects of PMA on CD18 mRNA could be inhibited obviously by Myr (2 ?mol/L), a specific inhibitor of PKC, and APDC, an inhibitor of NF-?B, but not be inhibited by curcumin, a inhibitor of transcriptional factor AP-1. CONCLUSION: PMA enhanced the expression of CD18 via the pathway of PKC. Transcriptional factor NF-?B, but not AP-1, was essential for the gene transcription of CD18 in U937 cells treated by PMA.

Objective To explore the effect of proprioceptive neuromuscular facilitation (PNF) on balance function of stroke patients in community. Methods 204 stroke patients in community were divided into control group (n=98) and observation group (n=106). The control group accepted routine rehabilitation and the observation group received PNF additionally. Fugl-Meyer Assessment of lower extremities (FMA), Berg Balance Scale (BBS) and static balance locator were used to evaluate the motor and balance function before and 3 months after treatment. Results The scores of FMA and BBS were higher after treatment than before (P<0.05) in both groups, and were higher in observation group than in control group (P<0.05). The length of path (L), covered area (A) and L/A were less in observation than in control group (P<0.05) both in the eye-open and eye-closed modes. Conclusion PNF can improve the lower extremities motor and balance function of stroke patients in community.

Objective To compare the efficacies of hepatectomy and liver transplantation for patients with hepatocellular carcinoma (HCC) fulfilling the Milan criteria.Methods From July 2002 to February 2009,121 patients with HCC combined with hepatic cirrhosis fulfilling the Milan criteria were admitted to the Fuzhou General Hospital.Eighty-nine patients who received hepatectomy were in the hepatectomy group,and 32 patients who received liver transplantation were in the liver transplantation group.There were no significant difference in the age,gender,etiology of liver disease,the size of the largest tumor,number of tumors,microscopic venous invasion,microsatellite lesion and tumor differentiation between the 2 groups.The clinical data of the patients in the 2 groups were retrospectively analyzed.The overall survival and disease-free survival were evaluated by Kaplan-Meier method,and differences in survival rates between the 2 groups were determined by Log-rank test.COX proportional hazard was used for univariate and multivariate analysis to evaluate the risk factors for prognosis.Results The median period of follow-up was 37 months.The 1-,3-,5-year survival rates were 86％,63％ and 44％ in the hepatectomy group,and 87％,70％ and 62％ in the liver transplantation group.There was no significant difference in the overall survival rate between the 2 groups (x2 =1.092,P ＞ 0.05).The 1-,3-,5-year disease-free survival rates were 68％,44％ and 26％ in the hepatectomy group,and 80％,65％ and 52％ in the liver transplantation group.There was a significant difference in the disease-free survival rate between the 2 groups (x2 =4.712,P ＜ 0.05).The result of univariate analysis revealed that microscopic venous invasion and microsatellite lesion were significantly correlated with the survival (Wald =9.625,7.340,P ＜ 0.05),and the result of multivariate analysis indicated that microscopic venous invasion was the independent risk factor influencing the survival (Wald =5.008,P ＜ 0.05).Conclusions As for patients with HCC fulfilling the Milan criteria,the overall survival rate of patients who received hepatectomy is not different from those who received liver transplantation,but the disease-free survival rate of patients who received liver transplantation is higher than those who received hepatectomy.Microscopic venous invasion is an independent risk factor influencing the survival.

AIM: To study the effect of dexamethasone(Dex) on the expression of CD18. METHODS: Quantitative RT-PCR analysis, Northern blotting technique were used to measure the expression of CD18 in U937 cells treated by PMA. RESULTS : Dex could significantly attenuated the effects of PMA in a dose-dependent manner (10 -6 mol/L-10 -10 mol/L). These effects of Dex (10 -7 mol/L) were completely aborted by RU-486 (10 -6 mol/L).CONCLUSION: Dex, via GR, could inhibit CD18 mRNA expression in U937 cells treated by PMA. The effects of Dex might be possibly depended on the counteracting action on the NF-?B.

Objective:To evaluate the effectiveness of staged modular theory and practice lectures in laparoscopic training.Methods:In this study, a large group of medical students and a large group of residents were selected, and each of the two groups was divided into an experimental group and a control group respectively. The experimental group received staged modular theory and practice lectures based on the conventional trainings, and the control group only underwent conventional laparoscopic skills training and instruction. Before and after the training, the completion time of 6 basic laparoscopic operations, laparoscopic suture time, suture quality and the number of accidental injuries were recorded and scored in each group according to the assessment criteria. SPSS 26.0 was used for statistical analysis of the assessment data. Independent samples t-test or Mann-Whitney U test was used for inter-group comparison between the two large groups, and paired samples t-test or Wilcoxon sign rank sum test was used for intra-group comparison before and after the training. Results:Compared with the control group, the experimental group of medical students that had undergone staged modular theory and practice lectures had a shorter time to complete basic laparoscopic operations, faster speed of suturing ( t=6.18, P<0.001) and higher quality of suturing ( t=4.17, P<0.001) and fewer accidental injuries ( Z=-2.03, P=0.043); the experimental group of residents that had undergone staged modular theoretical and practical lectures had a shorter time to complete basic laparoscopic operations, faster speed of suturing ( t=3.31, P=0.002) and higher quality of suturing ( t=3.68, P=0.001) and fewer accidental injuries ( Z=-2.44, P=0.015). Conclusion:The staged modular theory and practice lectures are able to further improve the quality of basic laparoscopic skills training.