Objective To investigate effect of platelet-associated antibody to the platelet transfusion.Methods Platelet-associated antibody in 120 patients who needed repeated platelet transfusion for long-time was determined by enzyme-linked immunosorbent assay (ELISA),and platelet count was assayed before and after blood transfusion,and the effect of platelet transfusion was investigated by corrected platelet count.Crossmatch approcah was used to screen compatible platelet for patients with platelet relative antibody positive.Results The ratio of positive platelet-aasociated antibody in patients who needed repeated platelet transfusion was 65.0％,and the ratio of platelet transfusion resistance was 61.7％.The ratios of platelet transfusion resistance were 84.6％ and 19.0％ respectively in patients with positive platelet-associated antibody and in patients with negative platelet-associated antibody,which were different in statistic in both groups( x2 =,46.914,P ＜0.0l ).The effective ratio of platelet transfusion in patients with positive platelet-associated antibody after crossmatch approach was 85.9％.Conclusion Positive platelet-associated antibody was related to platelet transfusion resistance with high risk,and crossmatch approach could increase the effect of platelet transfusion.

Objective To study the effect of different transfusion measures on the clinical outcome in preterm infants.Methods 100 cases of blood transfusion in preterm infants were chosen.They were divided into restrictive transfusion group and non-restrictive transfusion group.The clinical outcomes of infants were recorded.Results The Hct of children with restrictive transfusion group pre-transfusion was(27.97±4.86) ％,which was significantly lower than pre-transfusion Hct of non-restrictive transfusion group(34.51±6.34) ％.The difference was statistically significant(t =3.78,P ＜ 0.05).The differences of each transfusion value,each blood transfusion and transfusion times for the two groups of infants were not statistically significant(t =0.59,0.37,0.68,all P ＞ 0.05).The invasive ventilator of the non-restrictive transfusion group was(5.73±4.95)d,significantly less than the restrictive transfusion group(7.61±5.72) d.The difference was statistically significant(t =2.36,P ＜ 0.05).The differences for the rest of the clinical outcomes for the two groups of infants were not statistically significant(P ＞ 0.05).Conclusion The reducing of non-restrictive transfusion invasive ventilator time may be more conducive to clinical recovery in preterm infants.The clinical should not blindly adopt conservative restrictive transfusion countermeasures.

ObjectiveTo study the clinical significance of determination on homocysteine in serum of pediatric idiopathic epilepsy. MethodsThe homocysteine level in serum of 81 patients with pediatric idiopathic epilepsy was determined,and the value of normal children was tested and compared as control. ResultsThe concentration of Hey in research group was from 7.6mol/L to 22.0μmol/L,the mean value was(15.91 ±2.38)μmol/L,The concentration of Hcy in control group was from 3μmol/L to 9μmol/L,and the mean value was(6.87 ± 1.75)μmol/L.which showed a significant difference(P＜0.05).By comparison,the high concentration(＞15 μmol/L)of Hcy in control group was only 6 cases,while it was 73 cases in research group,which also showed a significant difference (P＜0.05). ConclusionHcy level was apparently relevant with occurring rate of pediatric idiopathic epilepsy.In the diagnosed clinical treatment of idiopathic epilepsy,the closely monitor of serum level of homocysteine,and timely promoting Hcy metabolism.should be carried out.

ObjectiveTo investigate the serum tumor markers level of carcinoembryonic antigen(CEA) ,cytokeratin fragment antigen21-1 (CYFRA21-1),neuron specific enolase (NSE) in patients with lung cancer, and the change after chemotherapy on them. Methods Radioimmunoassay was applied to detect the levels of CEA, CYFRA21-1 ,NSE in 45 patients with advanced NSCLC before and after chemotherapy,and the tumor markers were also detected in 20 patients with SCLC and 20 patients with benign lung diseases of control groups. ResultsThe levels of CEA, CYFRA21-1, NSE in lung cancer group before chemotherapy were much higher than benign group, but there was no difference of CYFRA21-1 between the SCLC group and benign group. The same result of NSE was found between NSCLC and benign group(P ＞0. 05). The value of NSE was lower in the patients with SCLC after chemotherapy than before(P ＜0. 01 ). The level of CYFRA21-1 was lower in squamous carcinoma than before( P ＜0. 01 ). But in the adenocarcinoma group only NSE's level was lower after chemotherapy( P ＞0. 05) ,there were no differences in CEA and CYFRA21-1 ( P ＞ 0. 05 ). ConclusionThe levels of the three tumor markers rise obviously in advanced NSCLC and decrease after chemotherapy. The differences were significant with NSE in SCLC and CYFRA21-1 in squamous cell carcinoma and CEA in adenocarcinoma. The levels of serum CEA,CYFRA21-1 and NSE could be a tumor marker in progressive lung cancer. And the decrease of the levels could be used to evaluate the chemotherapeutic response respectively in different pathologic types of lung cancer.

Objective　To investigate the expression of LPS receptor-CD14(CD14) on the membrane of Kupffer′s cells (KCs) induced by Lipopolysaccharide (LPS )and its role in activation of KCs and production of cytokines. Methods　KCs were isolated by collagenase perfused Wistar rats and routinely cultured in 24-well dishes for 12 h. Cells were harvested and adjusted to a concentration of 1×106/ml/well and were devided into two groups. Group of LPS: KCs were induced with different concentration of LPS (0, 100 ng/ml, 1 μg/ml and 100 μg/ml). Group of PI-PLC: KCs were pre-incubated for 30 min with one unit of phophatidy linositol specific phospholipase C (PI-PLC) before different concentrations of LPS were added. KCs were cultured for 30 and 60 min respectively. Supernatants were then collected for measuring the level of TNFα and IL-6. Cells were stained by indirect immunofluorescent method ( rabbit anti-CD14 antibody and goat anti-rabbit IgG conjugated with FITC ) and analyzed with flow cytometer (FCM). The percentage and mean fluorescence intensity (FI) of CD14-positive cells were taken as the indexes. Results　In LPS group, after incubation of cells with increasing concentration of LPS, a significant increase in the percentage of CD14 positive KCs were found and the mean FI was stronger when compared with the control points or the group of PI-PLC. The levels of TNFα and IL-6 in supernatant also increased (P<0.01). In group of PI-PLC, decreased percentage of CD14 positive KCs and weakened mean FI were found when compared with group of LPS. The increasing production of TNFα and IL-6 slowed down in the group of PI-PLC. Conclusion　CD14 expression of KCs might be up-regulated by LPS with increase of some cytokines. The production of cytokines in KCs induced by LPS is partially inhibited by PI-PLC.

005) There was significant difference between pre-operation and 56 th day( P

Objective　To investigate the expression of HGF and TGF-α and their receptor, Met (HGF receptor) and EGFR (TGF-αreceptor) mRNA, in the regenerative liver/hepatocytes after 70% partial hepatectomy (70% PH) in noncirrhotic biliary obstruction rats. Methods　Wistar rats were divided randomly into N-PH group, BDO-RBF-PH group and BDO-RBF group. The expression of HGF/Met mRNA and TGF-α/EGFR mRNA was measured by RT-PCR in the liver/hepatocytes at the time point of 0, 6, 12, 24, 48 and 72 h after 70% PH or RBF. Results　In N-PH group, the expression of HGF/Met mRNA increased sharply and peaked at 6 h, and maintained at a high level until 24 h after 70% PH. In BDO-RBF-PH group however, the expression of HGF/Met mRNA increased slowly and peaked at 12 h after 70% PH. The peak level was lower in BDO-RBF-PH group than in N-PH one. The expression of TGF-α/EGFR mRNA increased sharply and peaked at 24 h after 70% PH in N-PH group. However, the expression of TGF-α/EGFR mRNA elevated slowly and peaked at 48 h after 70% PH in BDO-RBF-PH group with a lower peak level than that in N-PH group. Conclusion　The expression of HGF/Met mRNA and TGF-α/EGFR mRNA in the regenerative liver/hepatocytes after 70% PH decreases significantly in noncirrhotic biliary duct obstruction rats. There is a tendency that the expression of HGF mRNA and TGF-α mRNA is less than Met mRNA and EGFR mRNA.

OBJECTIVETo investigate the effect of ursodeoxycholic acid (UDCA) on liver regeneration after 70% partial hepatectomy (PH) in bile duct obstructive (BDO) rats.

METHODSWistar rats were randomly divided into N-PH group in which normal rats were operated with 70% PH, BDO-PH group in which 70% PH were operated after two week's BDO, and BDO-PH UDCA or sterile saline treatment group in which UDCA (15mg kg(-1) d(-1)) or saline was administrated during BDO and after 70% PH. The hepatic pathological changes were observed. BrdU labeling of hepatocytes, the mRNA expression of intrahepatic hepatocyte growth factor (HGF) and its receptor (Met gene) after 70% PH were measured by immunohistochemical analysis and RT-PCR, respectively.

RESULTSImprovements of hepatic function and pathological changes were induced by UDCA administration after BDO. The expression of hepatic HGF/Met mRNA after 70% PH in BDO-PH UDCA treatment group rats was significantly increased compared with N-PH group rats (P<0.05), BrdU peak labelling of hepatocytes (59.39% +/- 10.82%) in BDO-PH UDCA treatment group rats was significantly higher than that (36.22% +/- 8.37%) in BDO-PH group rats (t=4.149, P<0.01) and without significance compared with N-PH group rats (68.64% +/- 11.26%, t=1.451, P >0.05).

CONCLUSIONSUDCA promotes liver regeneration after 70% PH in BDO rats by remission of hepatic pathological changes and elevating hepatic mRNA expression of HGF and Met.

Animals ; Cholestasis ; genetics ; physiopathology ; surgery ; Gene Expression Regulation ; drug effects ; Hepatectomy ; Hepatocyte Growth Factor ; genetics ; Liver ; physiology ; surgery ; Liver Regeneration ; drug effects ; Male ; Proto-Oncogene Proteins c-met ; genetics ; RNA, Messenger ; drug effects ; genetics ; metabolism ; Rats ; Rats, Wistar ; Ursodeoxycholic Acid ; pharmacology

Objective To investigate the clinical value of hemostatic silk in prevention of wound bleeding and wound healing after endoscopic submucosal dissection (ESD). Methods Experiment group: animal model was made by rabbit underwent ESD simulation in its' stomach and laying hemostatic silk on its' wound;control group: animal model was made by pig underwent ESD simulation in its' colon without any healing management. All the ulcers sites were endoscopically and pathologically examined to evaluate the hemorrhage and healing of the wound on 3 days, 1 week, 2 weeks and 4 weeks after the procedure. Results The blood loss in experiment group was significantly lower than that in control group. The wounds of all the experimental pigs underwent colon ESD successfully covered with hemostatic silk postoperatively. Endoscopic pathological examination shown better healing procedure in experiment group. No procedure-related adverse event occurred in both groups. Conclusions Hemostatic silk has potential application value in healing the wound after ESD demonstrated by animal experiment.

Objective To evaluate the application value of absorbable hemostat textile as submucosal injection of endoscopic submucosal dissection(ESD). Methods Twelve New Zealand rabbits were injected with absorbable hemostat textile solution,glycerol fructose and normal saline. The uplift effect was measured after injection. Simulated ESD was performed in the rabbit stomach and bleeding amount was measured. The injection site was pathologically examined at 30 minutes after the soluble hemostat textile and normal saline were injected. Fifteen pigs were injected with absorbable hemostat textile at two locations of 20-30 cm from the anus,and injected normal saline at another two locations of 20-30 cm from the anus.One site was performed simulated ESD and the other was not. Fifteen simulated ESD were performed in the soluble hemostatic group and the normal saline group, respectively. Operation time was recorded and difference in wound healing was compared between the two groups. Results In the uplift experiment, the absorbable hemostat textile group had higher uplift height(4.3±1.4 mm,4.1±1.9 mm,3.8±0.7 mm, 3.3±0.9 mm, respectively)at 0 min,10 min,20 min,30 min than that of the glycerol fructose group(4.3±2.2 mm,4.1± 2.0 mm,3.6±1.4 mm, 3.2±0.8 mm, respectively, P<0.05), and the glycerol fructose group was higher than that of the normal saline group(3.8±1.6 mm,2.6±1.4 mm,1.9±1.9 mm,1.1±0.7 mm, P<0.05). There was no significant difference in uplift height between the absorbable hemostat textile group and the glycerol fructose group(P>0.05). In the bleeding experiment, the bleeding amount of absorbable hemostat textile group was significantly less than that of the glycerol fructose group(0.36±0.07 mL VS 0.42±0.06 mL, P<0.05);the bleeding amount of glycerol fructose group was significantly lower than that of the normal saline group(0.42±0.06 mL VS 0.55±0.07 mL,P<0.05). There was no obvious tissue necrosis and other adverse complications in the absorbable hemostat textile group and the normal saline group. In simulated ESD experiment,complete resection rate of the absorbable hemostat textile group was higher than that of the normal saline group[86.7%(13/15)VS 46.7%(7/15), P<0.05], and mean operation time of the absorbable hemostat textile group was less than that of the normal saline group(3.2± 0.3 min VS 3.8± 0.5 min, P<0.05). No hemorrhage, perforations or other related adverse events occurred in non-ESD lesions. Conclusion Absorbable hemostat textile is safe and effective as submucosal injection of ESD.