Objective To explore the expression, as well as the proportion of subsets of the natural killer (NK) T cells in peripheral blood of patients with esophageal carcinoma before and after surgery, and provide ideas and experimental basis for immune treatment through tests. Methods Using CD3, CD56, CD4 and CD8 antibody to study the NKT cells and its subsets. Peripheral NKT cell subsets in 59 patients with esophageal carcinoma were analysed by flow cytometer. Results With the ratio of CD+3 CD+56 CD+8/CD+3 CD+56 CD+4 gradually increased, the proportion of phase Ⅲ- Ⅳ patients with esophageal carcinoma is gradually decreased between the groups. One-way ANOVA analysis showed that there were differences between the groups (P ＜0.05). The ratio of CD+3 CD+56 CD+8/CD+3 CD+56 CD+4 was in Non-linear related to CD+3 CD+56 CD+4NKT cells; CD+3 CD+56 CD+8; NKT cells were positively correlated with CD-3 CD+56 NK cells and negatively correlated with CD+3 T cells.Conclusion The ratio of CD+3 CD+56 CD+8/CD+3 CD+56 CD+4 may relate to tumor burden, and is helpful to determine the extent of disease in patients with esophageal carcinoma and prognosis.

Objective To study the effects and the mechanism of the ethanol extract of Blueberry(BE) on relaxation vascular endothelium or smooth muscle.Methods To use rat aorta as the specimen,to observe the effects of BE on induced relaxation of the phenylephrine-precontracted aorta.and approach the mechanism on vascular endothelium or smooth muscle.Results BE induced relaxation of the phenylephrine-precontracted(1.0×10~(-5)mol·L~(-1) aorta in a dose-dependent way(P<0.01),which was disappeared by removal of functional endothelium(P<0.01).Pretreatment of the aortic tissues with NG-nitro-L-arginine methyl ester(L-NAME),methylene blue,or 1H[1,2,4]-oxadiazole-[4,3_a]-quinoxalin-1-one (ODQ) inhibited the vascular relaxation induced by BE(P<0.01).BE-induced vascular relaxations were also markedly attenuated by addition of verapamil or diltiazem,while the relaxant effect of BE was not blocked by pretreatment with indomethacine,glibenclamide,tetraethylammonium(TEA),atropine,propranolol(P<0.01).Conclusion These results suggest that BE dilates vascular smooth muscle via endothelium-dependent nitricoxide-cGMP signaling pathway,possible involvement of L-type Ca~(2+) channel.

China donation after Citizen's death (CDCD) has been organized since 2010,and now has been synchronized with the international organ transplantation.At present,liver transplantation has become the only safe and curative treatment for the end-stage liver diseases.Nevertheless,there is much restriction over further exploration of this technique.This article will mainly focus on donation after brain death (DBD),and summarize the four dominating injuries of donor liver,including the donor's primary injury,cut and perfusion injury,graft preservation injury,and ischemia-reperfusion injury.

Objective:To investigate the possibility of predicting facial nerve involvement in the pa-tients with parotid tumors using facial electroneurography (ENoG).Methods:In the study, 53 patients with primary parotid tumors were included in the study , 28 were benign tumors and 25 were malignant . There was no significant difference of tumor locations and sizes between the two groups . House-Brackmann facial nerve function evaluation was gradeⅠin all the patients who received examination of fa-cial electroneurography , including stimulation strength , amplitude , and latent time bilaterally .The facial electroneurography results in the affected side were compared with the results of contralateral normal side , intraoperative appearance and postoperative histopathological diagnosis .The facial electroneurography results were analyzed by Wilcoxon signed rank test and receiver operator characteristic ( ROC) curve. Results:During the facial electroneurography examination , the mean stimulation strength in the patients with benign parotid tumor was 20.0 mA.There was significant decrease in the amplitude at the affected side compared with the normal side upon posterior auricular stimulation ( P<0 .05 ) .But there was no significant difference in the latent time between the bilateral sides (P>0.05).However, in the patients with malignant parotid tumor , the mean stimulation strength was higher at 24.5 mA.There was signifi-cant decrease in the amplitude or even no response at the affected side compared to the normal side upon posterior auricular stimulation ( P<0 .05 ) .No response was detected in the multiple branches of facial nerve of affected sides in 36 .0%patients upon posterior auricular stimulation .The amplitude of branchesⅢand Ⅳwas significantly lower at the affected side than that at the normal side upon anterior auricular stimulation (P<0.05).The area under the ROC curve for ENoG was 0.884.Conclusion: When the facial nerve was involved by the parotid tumors , the stimulation strength in the electroneurography was larger .There was significant difference in the amplitude and the latent time of the facial nerve between the affected side and the normal side upon the posterior auricular stimulation .The rate of absence of reac-tion wave was higher in the patients with malignant tumors .It was feasible to predict the facial nerve in-volvement by ENoG for the parotid gland tumor patients without clinical appearances of facial paralysis .

Objective To explore the dilution regression method of coagulation detection(PT ,APTT) in fat blood samples . Methods We collected 40 normal blood coagulation specimens (no fat blood ,no jaundice ,no hemolysis) in Yan′an hospital of Kun-ming ,then we detected the PT and APTT of the original plasma and 3-fold diluted plasma and 5-fold diluted plasma ,the we used the data both of before dilution and diluted to do the linear regression analysis ,and finally we got the regression equations of each index .we also collected 33 fat blood samples in Yanan hospital of Kunming ,which be divide into three groups through the severity of triglycerides :mild fat blood group(1 .7 mmol/L≤TG<11 .0 mmol/L) and moderate fat blood group(11 .0 mmol/L≤TG<20 .0 mmol/L)and severe fat blood group(TG≥20 .0 mmol/L) ,then we detected the PT and APTT after 3-fold diluted plasma and high-speed centrifugation plasma ,and then we brought diluted results into the normal regression equations and the results were compared with the high-speed centrifugation results .Results Because most of the 5-fold diluted plasma can not get the effective results ,so we use 3-fold diluted plasma to get the regression equations .The results of 3-fold diluted plasma was calculated by the regression equa-tions ,which then compared with high-speed centrifugation results ,after the analysis of statistical software ,two results had not sta-tistically significant (P>0 .05) .Conclusion Dilution regression method can be used to detect the fat blood samples in the clinical coagulation detection .

BACKGROUND:Olfactory ensheathing cells (OECs) have been shown to possess the potential of repairing injured spinal cord, but their biological characteristics after transplantation in vivo are not well understood.OBJECTIVE: To investigate the migration of OECs after transplantation into the injured spinal cord of adult rats.DESIGN: Randomized and controlled experiment.SETTING: Department of Orthopedics, Guangdong Provincial People's Hospital; Experimental Animal Center of the North Campus of Sun Yat-sen UniversityMATERIALS: Totally 38 2-month-old male SD rats with body mass of (350 ±20) g were used in this study.METHODS: This experiment was conducted in the Experimental Animal Center, North Campus of Sun Yat-sen University between February 2004and May 2004. Two SD rats were used to extract the OECs, which were stained with Hoechst 33342. Totally 36 SD rats were subsequently randomized into 3 groups, namely rostral transplantation group, caudal transplantation group and control group with 12 rats in each group. The rats in the rostral and caudal transplantation groups subjected to operations to establish thoracic spinal cord injury model and OEC suspension was injected; in the control group, the rats were spared of thoracic spinal cord injury with only OEC suspension injection.MAIN OUTCOME MEASURES: Distribution of OECs in the spinal cord was observed under fluorescence microscope 1, 2, 4 and 6 weeks after operation, respectively.RESULTS: Of the rats in the 3 groups, 1 died in the rostral group, and 2in each of the caudal transplantation and control groups, leaving 29 rats for result analysis. The OECs in the rostral and caudal transplantation groups migrated longitudinally along the long axis of the spinal cord to a farthest distance of 8 mm and penetrating the scar tissues, but very few cells could reach the contralateral side. The OECs in the control group diffused locally without migration.CONCLUSION: OECs mainly migrate along the axons in white matter of the injured spinal cord, and their rostral and caudal migration does not differ in speed or amount. Only a small amout of OECs can across the transected gap of the spinal cord.

Objective To analyze the relationship between polymorphisms of EDNRB gene and Hubei provincial patients of Han ethnicity with sporadic Hirschsprung disease(sHD). Methods Peripheral blood samples from 104 patients with sHD and 84 parents of 42 patients, and 120 normal children(as controls) were collected. PCR-SSCP and direct DNA sequencing were used to detect mutations and polymorphisms of exon-4 in EDNRB gene. The differences of allele frequencies and genotype distribution in polymorphic sites were further analyzed between the three groups. Allele frequencies of SNPs in forty-two sHD trios were analyzed by transmission disequilibrium test(TDT), and the association between phenotype of HD and SNPs was analyzed. Results No mutant site was detected and one polymorphic site of c831 G→A(L277L) was observed in Hubei provincial patients of Han ethnicity with sHD. The allele frequency of A(68% vs 53%) and genotype frequency of AA(49% vs 30%) were significantly higher in sHD group than that in control group(P

Objectives It was constructed that the replication defective adenoviral vectors carried the short hairpin sequences of mouse SCP2.And we will make a further study of mechanism between SCP2 gene and cholesterol stone in gallbladder.Methods The short hairpin sequences of mouse SCP2 were cloned by two-step PCR,and connected together with the plasmid pDC312.The Admax Adenoviral Vector System was used to generate the replication defective adenoviral vectors,which were purified by CsCl method.The processes of TCID50 were applied to detect the titers of the adenoviral vectors.Furthermore,Protein levels of SCP2 were determined by Western blot analysis,and the levels of SCP2、CYP7A1、HMGCR mRNA from the hepa1-6 cell of mouse were measured by the usage of RT-PCR.Results SCP2mRNA and SCP2 protein were down-regulated by the replication defective adenoviral vectors carried the SCP2-shRNA.With the decreasing SCP2mRNA,the levels of HMGCRmRNA were down-regulated at same the time,while CYP7A1mRNA were up-regulated.Conclusions The replication defective adenoviral vectors carried SCP2-shRNA were constructed successfully.The lower levels of SCP2 could affect the activities of HMG-CoA reductase and CYP7-a enzyme,which caused the variations of cholesterol metabolism and then decreased the formation of cholesterol stone.

ObjectiveTo evaluate the clinical value of infrahyoid myocutaneous flap in the reconstruction of mouth floor tissue defects. MethodsInfrahyoid myocutaneous flap was made including stenohyoid,thyrohyoid,omohyoid and the affiliated skin based on the axis of superior thyroid artery,vein and ansa cervicalis. The clinical data of 11 patients with reconstruction of mouth floor tissue defects using infrahyoid myocutaneous flap (maximum area was 8 cm × 3 cm) from Match 1993 to June 2009 were retrospectively reviewed.ResultsSeven infrahyoid myocutaneous flaps which reserved platysma branch of superior thyroid artery were all alive, while 2 patients presented epidermal necrosis of 4 un-protected patients. The follow-up period was range from 24 months to 195 months, one patient received salvage surgery for local regional lymphatic recurrence in level Ⅰ,which survived without diseases until now.The rest cases had turned out a success.No dysphagia,dysphonia,and tongue extension difficulty was reported in any patient.ConclusionInfrahyoid myocutaneous flap is one of the valuable donor sites for the reconstruction of mouth floor tissue defects after radical oncologic operations,especially for those with early stage carcinoma of the mouth floor.

Objective To study the intraoperative and postoperative complications of autologous liver transplantation (ALT),and their prevention and treatment.Methods From October 2005 to December 2011,our center carried out 36 cases of ALT for malignant (n=23) and benign diseases (n=13).Intraoperative and postoperative complications and treatment methods were analysed.Results Of the 36 patients,2 patients developed small liver syndrome in the perioperative period.Allogeneic liver transplantation was carried out for 1 of these two patients for acute liver failure.Another patient died of lung infection 16 days after the surgery.Among 36 ALT recipients and 23 patients suffering from malignant tumor,1,2,3-year survival rates were.75％,71％,68％ and 65％,59％,54％ respectively.Conclusions With adequate preoperative assessment,the incidence of serious complications after ALT should be low.Prompt prevention and treatment of intraoperative and postoperative serious complications could cut down perioperative mortality,and provide long-term survival after ALT.