Objective To investigate the effect of treatment with transplanted bone marrow mononuclear cells under different transplant paths on neovascularization in ischemic cerebral infarction rats. Methods The MCAO models were established by intraluminal vascular suture method. All the successful models were randomly divided into control group, intravenous transplantation group and subarachnoid transplantation group according to the random number table. The Extraction,isolation and culture of bone marrow mononuclear cells were extracted,i?solated and cultured. The models in the control group were injected 200μl PBS through the femoral vein. The mod?els in the intravenous transplantation group were injected 200μl containing 2×107 bone marrow mononuclear cells through the femoral vein. The models in the subarachnoid transplantation group were injected 200μl containing 2× 107 bone marrow mononuclear cells through the subarachnoid. The VEGF levels in cerebrospinal fluid of rats were detected using quantitative ELISA method. The vascular regenerations in the infarct area were observed by using quantitative immunofluorescence. Results After transplantation of bone marrow mononuclear cells 7 d,14 d and 28 d,the VEGF levels of rat cerebrospinal fluid in subarachnoid transplantation group were (207.4±8.9)pg/ml, (171.2±10.3)pg/ml and (143.8±13.8)pg/ml,respectively,which were all higher than the VEGF levels in intra?venous transplantation group,the differences were all statistically significant (P<0.05). After transplantation 14 d and 28 d,the BrdU?positive cells in subarachnoid transplantation group were ( 2043. 8 ± 514. 2) and ( 1834. 8 ± 307.4) ,respectively,which were higher than the intravenous transplantation group,the differences were all statisti?cally significant (P<0.05). The microvessel counts in subarachnoid transplantation group were (384.6±45.1) and (514.8±51.3),respectively,which were higher than that in the intravenous transplantation group,and the differ?ences were all statistically significant (P<0.05) . Conclusions Bone marrow mononuclear cells transplantation can increase VEGF secretion,and promote angiogenesis infarct. The effect of subarachnoid transplantation is better.

To investigate the effects of freezing the area of first porta hepatis which involves Glisson duct system,16 pigs were randomly divided into 2 groups. Group A:structures of the first porta hepatis were frozen by a dish-like cryoprobe (D=3.0cm) with temporary blockage of hepatic portal blood during freezing,the temperature at the end of 1,2,3minutes of cryotherapy was -50℃,-110℃,-131℃.Group B:sham operation,only with hepatic portal blockage for 3 minutes. Liver function tests, 99mTc-EHIDA scintiscanning,and pathological observation were used to evaluate the effects of the cryosurgery postoperatively.The results showed that the bile duct systems on first porta hepatis were severely destroyed by the cryosurgery,the cryoimpairment of common bile duct and/or common hepatic duct led to complications of progressive, irreversible, cryptic necrosis, fistula and pyogenic angiocholitis. The large freezing necrotic lesion in the porta hepatis might compress the portal vein. The perfect protection of biliary system should be accomplished in the cryosurgery of the first porta hepatis to avoid severe complications.

In order to investigate if the recombinant human growth hormone(rhGH) is suitable for hepatocellular carcinoma(HCC) treatment,we used radioreceptor assays to detect if growth hormone receptor(GHR) was presented in 32 HCC tissues.The results showed that the growth hormone specific singular binding site,namely GHR,was detected in 28 cases. The binding capacity(R T ) of GHR was 18 4300?4 1633fmol/mg.protein and affinity constant(Kd) was 0 6432?0 1961nmol/L R T was lower ( P 0 05). The R T of the GHR was negatively correlated to the tumor's size,but was not correlated with differentiation of tumor, or the co existence of cirrhosis,GHR was absent in 4 cases. This study showed that the majority of the HCC tissue still express a low level of GHR. Before their functions are well understood, rhGH should be very carefully used in HCC patients.

Objective To study the risk factors of Pseudomonas aeruginosa (PA)infection and homology of PA isolated from nasopharyngeal carcinoma patients undergoing radiotherapy,and prevent and control the spread of in-fection.Methods Bacteria isolated from clinical specimens were identified by BD Phoenix automated microbiology system. Gene homology were analyzed with randomly amplified polymorphic DNA (RAPD)technique.Results Forty-nine strains of PA were mainly isolated from 43 nasopharyngeal carcinoma patients,the major specimens were nasopharyngeal swab (46.94% ),sputum(32.65% ),and oral secretion (10.20% ).All these strains were amplified 46 electrophore-sis diagrams,and 19 genotypes were identified. The highly homologous genotypes of type H and J strains were mainly isolated from patients in the second section (57.14% ,4/7)and fourth section (60.00% ,3/5)of radiotherapy department respectively. Conclusion Localized epidemic of highly homologous PA exists in different sections of ward,transfer of patients between different sections is the risk factor for homology PA infection/colonization. Gen-otyping technique such as RAPD for analyzing the homology of pathogenic bacteria in healthcare-associated infection has important value in preventing and control Ling infection spread.

Objective: To observe the transfer efficiency of protamine-DOTAP/Chol liposome-oligodeoxynuleotides complex to SKOV3 cells. Methods; Synthesized NF-?B decoy ODNs or scrambled ODNs labeled by FITC on the 5'ends was mixed with rationic DOTAP/cholesteral liposome and protamine, making the charge ratio of positive: negative 4. SK-OV3 cells were transfected by the complex (1 ?mol/L) and the efficiency were measured by flow cytometry ( FCM) and fluorescence meter. The direct effect of NF-KB decoy ODNs transfer on the growth of SKOV3 cell line in vitro was measured by MTT method. Results: The efficiency of LPD transfer to SKOV3 cell line was 96. 41% , significantly higher than that of naked DNA transfer which was 12. 86%. The growth of SKOV3 cell line was not affected by 48h incubation after NF-KB decoy ODNs or scrambled ODNs transfection. Conclusion: LPD method is the one with high transfer efficiency not affected by NBS( newborn bovine serum) with possibility of use in vivo.

OBJECTIVE:To assess the cost and therapeutic effects of Chinese traditional medicine and western medicine in treating varicocele sterility. METHODS:165 patients with sterility were randomly divided into 2 groups. Chinese traditional medicine group included 110 cases who took Zhang's varicosity prescription, while the western medicine group included 55 cases who took human chorionic gonadotropin, clomiphene citrate, zinc gluconate, ATP and vitamin AD,Vitamin E,Vitamin C,for 3mo～9mo normally. The therapeutic effects and adverse effects of two groups were monitored and evaluated with cost- effectiveness analysis. RESULTS:The total effective rates of Chinese traditional medicine and western medicine were 81.82%and 50.91% respectively, while the costs were 3 688.2 Yuan and 2 399.2 Yuan accordingly, C/E were evaluated to be 45.08 and 47.13 respectively and ?C/?E was 41.7. CONCLUSION:Zhang's varicosity prescription is the better choice for treatment of varicocele sterility

Objective To investigate the prevalence and charateristics of carotid atherosclerosis among healthy middle-aged people of community. Methods Totally 1930 subjects aged 50 years and above were selected randomly from 10027 participants recruited during Phase 3 of the Guangzhou Biobank Cohort Study (GBCS).Common carotid artery intima-media thickness (CCA-IMT) and carotid plaques (CP) were measured by B-mode ultrasonography using ALT HDI 3000 mainframe with a high-resolution. Results The prevalences of CCA-IMT and CP in men were higher than women [41.5％(400/963)vs.16.2 (157/967),34.1％ (328/967) vs.13.8％ (133/967),both P＜0.001].The prevalence of CCA-1MT was higher with age increasing in either men or women in groups of 50-yrs,60-yrs and 70-79 yrs (all P＜0.001).The most of CP was cankerous spot (37.8％),secondly hard spot (24.9％),soft spot (22.1％) and the prevalence of flat spot was lowest (15.2％).The number of CP was not significantly different between the left and right side (51.0％ and 49.0％).The most common location of CP was bifurcations of carotid arteries (61.7 ％),next the common carotid artery (21.0％) and internal carotid artery (ICA) was lowest (17.3 ％).The prevalence of CP was 44.4％ (83/87) in women aged 50- yrs,it was higher than that in men 20.9％ (108/517).However,the prevalence of CP was 79.1％ (409/517) in men aged more than 60 yrs,higher than that in women (55.6％). Conclusions The carotid atherosclerosis is commonly encountered disease in the male elderly,and the most of CP was cankerous spot in bifurcations of carotid arteries

AIM: To analyze and compare the changes of pressure phase plane(PPP) derived τ and K on isolated rat heart during ischemia/reperfusion, and to explore the value of PPP derived τ and K for evaluation of left ventricular diastolic dysfunction. METHODS: LVEDP, -d(p/dt)_(max), τ and K were measured and calculated during ischemia/reperfusion in Sprague-Dawley rat hearts. Meanwhile, the level of lactate dehydrogenase (LDH) in the coronary effluent was measured, and the ultrastructure changes in myocardium were observed under electron microscope. RESULTS: Compared with control group, τ increased and K reduced significantly in each ischemic group in a time dependent manner (P<0.05). With prolonged ischemia, τ was even higher and K was even lower (P<0.05). Compared with control group, except ischemia 15 min, LDH in other groups increased significantly at 10 min and 20 min after reperfusion (P<0.05). Compared with ischemia 30 min, LDH of ischemia 45 min and ischemia 60 min were even higher at 10 min and 20 min after reperfusion (P<0.05). With prolonged ischemia, the abnormal changes of the myocardial ultrastructure were observed. CONCLUSION: PPP derived τ and K may be promising indexes for quantitative assessment of left ventricular diastolic function on isolated) rat heart during ischemia/reperfusion, and indication of the severity of ischemia/reperfusion injury.

BACKGROUND: Hemorrhage, hemostasis, and blood coagulation, as well as the application of hemostasis measures, in the liver transplantation have been poorly understood. There have been no protocols regarding routine hemostasis.OBJECTIVE: To investigate the hemorrhagic features in each phase and to observe the application efficacy of recombinant activated factor Ⅶ (rFⅦ a) during the liver transplantation.DESIGN, TIME AND SETTING: A retrospective case analysis, controlled observation experiment was performed at the Department of Common Surgery, Second Affiliated Hospital of Sun Yat-sen University between April 2001 and July 2006.PARTICIPANTS: Fifteen patients who received liver transplantation between April 2001 and March 2003 served as retrospective study subjects. An additional 28 patients who underwent liver transplantation between March 2003 and July 2006 were randomly and evenly divided into two groups: rFⅦ a and control.METHODS: The hemorrhage rule of 15 patients who received liver transplantation in the protophase was retrospectively analyzed and the hemorrhagic feature in each time period was localized. A comparative observation was performed in the 28 patients in the anaphase. The rFⅦ a group received an intravenous injection of 70-80 μ g/kg rFⅦ a for 3-5 minutes. Simultaneously, the control group was given 50 m/physiological saline in parallel.MAIN OUTCOME MEASURES: Hemorrhage volume of 15 patients that received liver transplantation in each phase; prothrombin time, activated partial thromboplastin time, and total hemorrhage volume prior to and 30 minutes after rFⅦa application in 14 patients who received liver transplantation.RESULTS: Extensive errhysis was a primary cause of hemorrhage in the liver transplantation. Hemorrhage pdmadly occurred in the phase of diseased liver resection (i.e., pre-anhepatic phase), rFⅦ a could well improve various coagulation functional indices, i.e., thromboelastography indices (reaction time, coagulation time, α angle, and maximum amplitude) and routine blood indices (prothrombin time and activated partial thromboplastin time). Compared with the control group, hemorrhage volume was obviously decreased and transplantation time was significantly shorter in the rFⅦa group. In addition, no thrombotic complications were found in the rFⅦa group during the observation period.CONCLUSION: The pre-anhepatic phase is a primary hemorrhage phase during the liver transplantation, rFⅦ a can be successfully applied for liver transplantation.

BACKGROUND: Extensive liver resection or liver transplantation operated on patients with combined hepatic cirrhosis and other complications correlates with high morbidity and mortality.Child-Turcotte-Pugh scoring system is now widely used in the assessment of liver function.This classification scheme includes three clinical indicators and two biochemical indices;however,it seems difficulty on directly evaluating functional status of hepatocytes.OBJECTIVE: To explore the practicability of bioluminescence adenosine triphosphate (ATP) determination assay to assess the functional reserve of residual hepatocytes,DESIGN,TIME AND SETTING: Case contrast study,which was carried out in the Second Affiliated Hospital,Sun Yat-sen University from January 2005 to March 2006.PARTICIPANTS: Thirty-two patients who underwent major extra-and intra hepatic surgery including liver transplantation were randomly divided into three groups based on hepatic cirrhosis grading standard,including normal group (n=7),macronodular cirrhosis group (n=9),and micronodular cirrhosis group (n=16).METHODS: Routine examination and biochemical indexes of liver were performed preoperatively,including glutamic oxalacetic transaminase (GOT) and total bilirubin (TBIL).Liver specimens were delivered by aseptic technique during operation and enzymatic digested.Cell suspension was cultured and centrifuged.Hepatocytes were counted and dispensed cell suspension to be used for ATP extraction and measurement.MAIN OUTCOME MEASURES: ATP content,preoperative biochemical parameters of liver function,and correlation between biochemical parameters and ATP content.RESULTS: The ATP content in the macronodular cirrhosis group was significantly higher than that in the micronodular cirrhosis group and normal group (P=0.000 1,0.004).While,the ATP content in the micronodular cirrhosis group was also significantly higher than that in the normal group (P=0.004).ATP content (mole/cell) wassignificantly positively correlated with serum glutamic oxalacetic transarninase (r=-0.609 3,P=0.000 2) and TBIL (r=0.614 5,P=0.000 2).CONCLUSION: ATP assay can directly evaluate functional reserve of liver parenchyma and reflect high operative risk status (HORS) and course of postoperative recovery in major hepatic resection.