Objective To explore the relationship between serum levels of leptin and the physieal development and the infuences of diseases on the levels of leptin in prematurities.Methods To collect the clinical data as well as weights,lengths of 40 sick premature infants(sick group)and 30 premature infants without sick diseases(control group)and to test the serum levels of leptin using radioimmunoassay(RIA)at 1d,7d and 12d of life,and to analyze the differences of serum levels of leptin and weights,lengths and body mass index(BMI)between two groups.Results In both groups the BMI and the serum levels of leptin were decreased at d7 of life and reincreased at d12 of life(P＜0.01),and the serum leptin levels were corresponding to the changes of the physical development of premature infants at ld,7d and 12d of life(P＜0.01).The serum leptin levels were lower in sick group compared with control group at 7d and 12d of life(P＜0.05).Conclusion It suggested that there was positive correlation between serum leptin level and the physieal development in prematurities and diseases had negative influences to the leptin levels.

Objective To study the significance of expression of Cyclin E in hepatocellular carcinoma (HCC). Methods Cyclin E expressions were examined in 45 specimens of HCC and 30 specimens of paracancer tissues, and the relationship between Cyclin E with the clinico-pathological parameters was determined.Among the 45 patients ,19 were poor encapsulatic; 12 patients had portal vein thrombus; 11 had extrahepatic metastasis;12 had intrahepatic metastasis.Any patient had one or more of 4 conditions mentioned above was considered as invasion and metastasis. Results The overexpression of Cyclin E in HCC tissues was seen in 16 cases (35.6%) ,but not seen in paracancer tissues. Cyclin E overexpression occurred more frequently in HCC patients with poor differentiation and portal vein thrombus ( P 0.05). Conclusions Expression of Cyclin E is related with HCC carcinogenesis; differentiation , invasion and metastasis, detection of expression of Cyclin E may be helpful in the diagnosis, treatment and prediction of the prognosis of patients with HCC.

AIM:To detect tissue factor(TF)level both in plasma and in tissue of hepatocellular carcinoma(HCC)patients and to elucidate their association with clinical features.METHODS:Plasma TF levels of 50 cases of HCC patients and 30 cases of control were detected by ELISA.27 HCC tissue samples with their adjacent tissue samples and 27 normal liver tissues were detected by RT-PCR.RESULTS:① Plasma TF levels were increased significantly in HCC group when compared with control(P

AIM: To investigate the angiogenesis status,the expression of vascular endothelial growth factor(VEGF),angiopoietin-1(ANG-1),angiopoietin-2(ANG-2),thrombospondin-1(TSP-1) in cholangiocellular carcinoma(CCC) and relationship with tumor angiogenesis,differentiation,invasion and metastasis.METHODS: 33 specimen of surgically resected CCC were investigated.Immunohistochemical staining of CD34,VEGF,ANG-1,ANG-2 and TSP-1 was carried out.RESULTS: The mean MVD was(87.2?52.6)/mm2.VEGF positive expression was found in 75.6% cases;ANG-1 positive expression was observed in 36% cases;ANG-2 positive was detected in 57.6% cases and 45.5% cases exhibited positive TSP-1 expression.VEGF and ANG-2 expressions were found to be associated with significant higher level of MVD(P

AIM:To detect the existence of signal joint T-cell receptor excision DNA circles(sjTRECs)of 23 TCR V? subfamilies in mononuclear cells of patients with multiple myeloma(MM),and to evaluate the recent thymic emigrants of corresponding V? subfamily nave T cells in MM patients.METHODS:23 TCR V? subfamily sjTRECs were amplified in genomic DNA from 5?104 PBMCs of 12 cases in MM patients by using semi-nest PCR.10 normal individuals served as controls.RESULTS:The number of detectable V? subfamily sjTRECs was 5.00?2.45 from MM patients,as compared with 9.60?5.48 from normal individuals,the difference was significant(P

Objective To detect the tissue factor (TF) mRNA expression in hepatocellular carcinoma and to elucidate its significance. Methods TF mRNA was detected by reverse transcription-polymerase chain reaction (RT-PCR) in 27 cases of human hepatocellular carcinoma tissue specimen with their adjacent tissues and in 27 non-tumorous process tissues. Then the relationship between mRNA expression and pathological data were analyzed. Results The expression and the relative expression intensity of TF in hepatocellular carcinoma tissues were 62.96(17/27) and 0.567?0.268 respectively, which were significantly higher than those in their adjacent tissues 〔33.33(9/27), 0.469?0.184〕 and in 27 non-tumorous process tissue 〔29.63(8/27), 0.353?0.121〕, P0.05). Conclusion Expression of TF mRNA were significantly higher in hepatocellular carcinoma and in the invasive and metastatic tissue, which indicated that TF may play an important role in carcinogenesis, invasion and metastasis of hepatocellular carcinoma.

AIM: To investigate the antitumor effects of tumor necrosis factor- ? (TNF - ?) and interferon -?(IFN -?) on hepatocellular carcinoma (HCC) . METHODS: Cytotoxicity of the combination of TNF-? and IFN-? on HCC in vitro was measured by using a crystal violet (CV) staining method. Antitumor effects of the combination of TNF- ? and IFN - ? on HCC in vivo were observed by intra - hepatic injection of TNF-? and IFN-? to the tumor in a human HCC nude mice hepatic model. RESULTS: The growth of HCC cells was inhibited by TNF -? alone, which was dose - dependent. The cytotoxicity of TNF -? on HCC was enhanced by incubation with IFN -?. TNF at 107 U/L, or IFN -? at 106 U/L alone killed only 27.1 % or 7.9 of HCC cells, respectively, when combined with IFN -?, it killed 83.7% of HCC cells. A synergistic antitumor effect on HCC in vivo was observed in combination group, as tumor growth inhibition rate was 35.9% compared with 17.2% in TNF-? group and 5.6% in IFN -? group. The survival period of mice bearing tumor was significantly prolonged and serum AFP was significantly decreased in combination group (P

Objective:To develop the instrument for the evaluation of the report quality of clinical trials with the modified Delphi method in combination with panel discussions, and assess its validity and reliability. Method: For the development of the instrument, the modified Delphi method in combination with a panel discussion was applied. The consulting panel included pharmacologists, clinical doctors, epidemiologists, statisticians and editors of journal. 30 reports for the therapy of hypertension published in 2000 were selected for the estimation of the instrument of the validity and reliability. The interclass correlation coefficient (ICC) was used to test the reliability. The CONSORT statement was used as a control, and a Kendall correlation was worked out to estimate the validity. Result:A total of 10 specialists took part in the consultation. During the first round of consultation, the expert harmonious coefficient (W) reached to 0. 505 and 19 items were identified. A total of 100 scores were distributed to the 19 items in the second round, and finally the scale was completed. After scoring the 30 reports on hypertension therapy by two readers independently, the interclass correlation coefficients (ICC) of the total score were 0.921,and 0.987 in the introduction part, 0.875 in materials and methods, 0.902 in results, and 0.966 in the discussion and others, P

Objective To investigate the effects of oral glucose-electrolyte solution (GES) on resuscitation of hemorrhagic shock induced by 40% blood volume loss in rats. Methods SD rats were randomly divided into three groups; oral GES without hemorrhagic shock (GES group, n = 16) , hemorrhage shock without fluid resuscitation (HS group, n = 20) and hemorrhagic shock resuscitated with oral GES (HS + GES group, n = 20). About 40% of total blood volume was bled from carotid artery of rats to produce a model of hemorrhagic shock. GES with a volume of three times of blood loss was given three times intragastrically at 0.5, 1 and 6 hours after hemorrhage. Mean arterial pressure (MAP) was measured constantly. Blood flow in liver, kidney, stomach and small intestines, and parameters like hemato-crit, plasma osmotic pressure, alanine aminotransferase (ALT) , creatinine (Cr) and diamine oxidase (DAO) were determined 24 hours after hemorrhage. Survival rates of the rats in three groups were calculated 24 hours after hemorrhage. Results MAPs of HS + GES group were 9. 7% and 10. 9% higher than those of HS group 4 and 24 hours after hemorrhage (P < 0. 05). The blood flow of liver, stomach and small intestines in HS + GES group were 18.6% , 88.4% and 22.0% respectively, higher than those in HS group(P <0.05 or P <0.01) 24 hours after hemorrhage. The hematocrit level of HS + GES group was significantly lower than that of HS group, while the levels of ALT, Cr and DAO in HS + GES group were significantly lower than those in HS group (P <0.01). The survival rate of rats in HS + GES group was 80% , which was significantly higher than 30% in HS group (P <0.01). Conclusions Oral rehydration can significantly improve MAP and tissue perfusion, maintain blood volume and plasma osmotic pressure, alleviate organ damage and hence promote the survival rates of rats with hemorrhagic shock.

Objective To observe the prokinetic effect of domperidone on colon and compare with that of mosapride and cisapride.Methods ① In viva experiment:forty rats were divided into control,domperidone,mosapride,and cisapride groups with 10 in each group.Stran gauges were planted both in proximal and distal colons and colonic motor activities were recoded in conscious rats.② In vitro experiment:the prokinetics effects of dopamine or dopamine combined with domperidone on the contraction of isolated rat colon strips were recorded by tone-transducers in the thermostatic muscle bath.Results In viva experiments:① in the interdigestive period of resting,activities of rhythimic phasic contraction were recoded in colon at conscious rats,and ② it had been showed that dornperidone significantly enhanced the contraction of colon in dose-dependent manner.Compared with control group,the mean contraction amplitude of proximal colon and distal colon increased by 84.61% ± 7.26% and 76.37 % ± 8.47% in domeridone group,respectively,which was higher than those in mosapride group (50.32%±8.16% and 45.13%±7.16%,respectively),but as same as those in cisapride group (92.55% ± 8.37% and 81.27% ± 9.95%,respectively).In vitro experiments:① perfusion of dopamin (40 mg/ml) could significantly decrease the contraction of isolated colon strip by 91.56% ± 10.24% in comparison with Krebs-Ringer solution,and ① domperidone could block the relaxant effect of dopamin on the isolated colon strip.Conclusions Domperidone can significantly enhance the colonic motor activities via antidopaminergic action.The effects of domperidone are similar as eisapride and greater than mosapride.