Objective To explore the correlation of the apoptosis of peripheral blood mononuclear cell (PBMC) with plasma 8-iso-prostaglandin F2? (8-iso-PGF2?) level in order to confirm the peroxidation damage of hyperbilirubinemia in neonates with jaundice.Me-thods One hundred and twenty-nine neonates who were 2 to 7 days old were divided into 4 groups:slight jaundice (43 cases),moderate jaundice (38 cases),serious jaundice (18 cases),and healthy control(30 cases)groups.Plasma 8-iso-PGF2? levels were assayed by enzyme immunoassay(EIA),and the apoptosis rates of PBMC were determined by flow cytometry.Results 1.There was no significant difference in the apoptosis rate of PBMC between normal and slight jaundice neonates (P=0.108);apoptosis rate of PBMC was increasing with the aggravation of jaundice.2.Plasma 8-iso-PGF2? level in normal neonates was 14.74?6.71 ng/L,there was no difference between normal neonates and neonates with slight jaundice(P=0.502).Plasma 8-iso-PGF2? levels in neonates with moderate and serious jaundice were much higher(Pa=0).3.Positive correlation existed between plasma 8-iso-PGF2? level and PBMC apoptosis rate (r=0.602 P=0).Conclusions Hyperbilirubinemia can induce peroxidation damage,resulting in increase of PBMC apoptosis.Plasma 8-iso-PGF2? level can accurately eva-luate the peroxidation damage in neonates with jaundice.

Postoperative peritoneal adhesion represents a major complication of surgery. Recently, the angiogenesis which cyclooxygenase-2 enzyme induced was found to play an important role in the adhesion synthesis. This review summarized the relationship between COX-2 induced angiogenesis and peritoneal ad- hesion.

Objective To study the correlation between chronic gastritis with benign mucosal nodular-change,Helicobacter pylori(H.pylori)infection and lymphoid follicles infiltration.Methods During July 1,2004 to June 30,2005 patients with chronic gastritis and benign mucosal nodular-change were identified by chromo-endoscopy with anabrosis indigo carmine staining at the antrum.Multiple biopsies were obtained for H.pylori detection with quick test and for pathology examination of mucosal lymphoid follicles formation and lymphocyte infiltration,as well as H.pylori infection.Results The patients were divided into nodular gastritis group,atrophy gastritis group and verrucous gastritis group with mean age of(31.00?11.62),(58.61?12.14)and(51.29?12.99)years old,respectively.The patients with nodular gastritis were the youngest(P

Objective To explore the role of depression as a moderator of self-concept on self-care behaviors in patients with chronic heart failure(CHF).Methods A sample of 160 in-patients with CHF were recruited from a cardiovascular hospital in Beijing.Data were collected by self-report questionnaires assessing self-care behaviors,self-concept and depression.Analysis of Moment Structures (AMOS) version 17.0 software was used to conduct the path analyses.Results Body sensation,self-consistency,self-ideal,moral-ethical-spiritual self and depression revealed direct effects on self-care behavior.Body sensation,self-ideal,moral-ethical-spiritual self affected self-care indirectly via depression.These paths' total coefficients were 0.09,0.15,0.31,0.09 and -0.26,respectively.Conclusion Self-care behaviors are directly affected by self-concept and depression.Depression has a greater moderating effect on these relationships.The findings provide a theoretical basis to direct the development of interventions for improving self-care in individuals with heart failure.

Background Treatment of corneal ulceration by transplanting drug-loaded amniotic membrane has been used widespreadly abroad,however,seldom study is found in China up to now.Objective This study was to explore the sustained release property and the efficacy of the drug-loaded amniotic membrane.Methods The bacteriostatic area of amniotic membrane fragments immersed with different concentrations (5,20,30 g/L) of levofloxacin for different time points (5,15,30,60 minutes) was evaluated by in vitro test.Bacterial corneal ulceration models were established in 20 rabbits by injected 0.7 MCF staphylococcus aureus suspension (0.1 ml) into the central corneal stroma to form the cloudy area of 4.0-6.0 mm.Then the rabbits were randomized into two groups.Regular amniotic membrane transplantation was performed laterally and 0.5％ levofloxacin drops was topically administered after operation in the amnion+levofloxacin drops group,and drug-loading amnion transplantation was used in the drug-loading amnion group.Aqueous humor of 0.1 ml was collected in 30 minutes,1 hour,2,3.5,5.5 hours after levofloxacin was administered and 1 day,3,7,10,14,21 days after operation for the detect of levofloxacin level with high-performance liquid chromatography.The corneal symptom was scored based on McNeill's criteria in 1 week,2 weeks and 4 weeks and the ulceration area was assessed under the slit lamp in the first week.The pathological examination was carried out in the fourth week after surgery.Results The mean bacteriostatic area was bigger with the increase of levofloxacin concentration,and bacteriostatic area in amnion immersed for 15 minutes was bigger than that of 5 minutes (P＜0.01).The levofloxacin concentration of aqueous humor after transplantation was decreased by extending the time,and that in 30 minutes and 5.5 hours after operation was (0.873±0.264) mg/L and (0.106±0.027) mg/L,respectively,in the amnion+levofloxacin drops group,and that in day 1,3,7 after surgery in the drug-loading amnion group was higher than at 30 minutes in the amnion+levofloxacin drops group,showing all significant differences (all P =0.00).In the first,second and fourth week after operation,the corneal symptom score was 1.7±0.6,1.3±0.5,0.2±0.4 in the drug-loading amnion group and 2.2±0.8,2.0±0.6,1.5±0.8 in the amnion+ levofloxacin drops group,with the significant differences among the different groups and time points (Fgroup =9.49,P =0.01 ;Ftime =22.96,P=0.01).The corneal ulceration area was (1.6±0.6) mm2 in the drug-loading amnion group and (3.2±0.8) mm2 in the amnion+levofloxacin drops group 1 week after operation,showing a significant difference between them (t =3.98,P =0.00).Histopathological revealed that the various layers of cornea tissue appeared irregular arrangement in the amnion + levofloxacin drops group 4 weeks after operation with 1-2 layers of new squamous epithelium.Disorder hypothallus structure,more inflammatory cells and residual vascular cavity were visible.However,new squamous epithelium of 4-5 layers was seen in the drug-loading amnion group,and inflammatory cells and residual vascular cavity were less than the amnion+levofloxacin drops group 4 weeks after operation.Conclusions Levofloxacin-loaded amniotic membrane can sustained release levofloxacin and maintain an effective drug concentration in aqueous humor,which improves the treating efficacy for staphylococcus aureus corneal ulceration.

Objective To construct and screen effective shRNA expression vectors targeting human AQP1 gene ,and evaluate the interference efficiency of the AQP1 shRNA recombinant plasmids ,thus provide basis for further exploration on the effect and mechanism of AQP1 gene on human breast cancer cells .Methods Four pairs of shRNA sequences targeting human AQP1 gene were designed and synthesized ,and then inserted into the GV115 vector .AQP1 shRNA and control shRNA plasmids were trans‐fected into human breast cancer MCF‐7 cells .The expression of AQP1 mRNA and protein were detected by real time PCR(RT‐PCR) and Western blot to evaluate the interfering efficiency .Results RT‐PCR demonstrated that AQP1 was expressed in human breast cancer MCF‐7 cells .Sequencing showed that the shRNA vectors targeting AQP1 were successfully constructed .48 h after the AQP1 shRNA transfection ,AQP1 mRNA and protein expression levels in MCF‐7 cells were reduced to a significant degree ,and the AQP1 shRNA 4 plasmid vector could inhibit the AQP1 most efficiently .Conclusion The AQP1 shRNA recombinant plasmids vectors were successfully constructed and can significantly inhibit the expression of AQP1 in MCF‐7 human breast cancer cells .

Objective To evaluate the bedside index for severity in acute pancreatitis (BISAP) and harmless acute pancreatitis (HAP) scoring system in predicting prognosis of acute pancreatitis (AP).Methods A total of 442 AP patients,who were admitted to The First Affiliated Hospital of Sun Yat-sen University from January 2003 to December 2010,were retrospectively studied.BISAP and HAP scores were evaluated respectively.The value of BISAP and HAP scores in predicting severity,local complications,organ failure and mortality were measured by the area under the curve (AUC) of receiver operator characteristic curve (ROC),and it was compared with that of traditional Ranson's score.Results Among 442 patients,73 patients (16.5％) were diagnosed to have severe acute pancreatitis (SAP).AUC for BISAP score in predicting SAP,local complications,organ failure and mortality were 0.90 (95％ CI:0.86 ～ 0.93),0.82(95％ CI:0.76 ～ 0.89),0.93 (95％ CI:0.89 ～ 0.96),0.93 (95％ CI:0.87 ～ 0.98).There were no statistically significant differences in AUCs of the four prognostic parameters between BISAP and Ranson's score.The specificity,positive predictive value (PPV),and AUC of HAP score in predicting mild AP were 85％,95％ and 0.73 (95％ CI:0.67 ～ 0.79).The risk of dismal prognosis increased when both BISAP and HAP score were abnormal.Conclusions BISAP and Ranson's score have comparable ability in predicting prognosis of patients with AP.However,BISAP score is simpler.HAP score is a simple and accurate method for predicting prognosis of patients with mild AP.Combination of BISAP score with HAP score can better help predict the prognosis of AP patients.

Objective:To study the influernce of circadian genes hClock and hBmal1 on the chemosensitivity of SGC-7901 cells. Methods: SGC-7901 cells were cultivated under continuous darkness in vitro.The expression levels of the two main circadian genes hClock and hBmal1 at the different time were determined by real-time polymerase chain reaction(PCR). Docetaxel was administered at the peak and nadir time point respectively. The inhibition of SGC-7901 cell proliferation was measured using a CCK-8 kit. Result:The expression of circadian genes hClock and hBmal1 varied at different times, as shown by real-time PCR. The expression of circadian genes hClock and hBmal1 showed Phase oseillation. The maximum expression of hClock and hBmal1 mRNA was at 20:00. whereas their minimum expression was at 08:00. The inhibition ratio of docetaxel to SGC-7901 cells at the maximum expression of hClock and hBmal1 genes was lower than that at the minimum expression. Conclusion:Circadian Genes hClock and hBmal1 can reduce the drug sensitivity of SGC-7901 cell line to docetaxel in vitro.

Objective:To study the isolation, culture and identification of the TMJ cells and to observe the biological characteristics of cultured fibrochondrocytes. Methods:The TMJ discs were dissected from two 1 month goats under sterile conditions and were digested with collagenase. The cells were collected. Morphological changes and attachment efficiency were constantly observed under phase-contrast microscope. Immunohistochemical staining for type I collagen as well as toluidine blue staining were performed. Ultrastructures of the TMJ cells were observed under transmission electron microscope. Results: Most of the primary fibrochondrocytes presented a short spindle-shape while the rest showed polygon-shape. On the 7th day, the perliferating fibrochondrocytes started to contact each other to form a monolayer covering the bottom of the incubation disc. Immunohistochemical staining of type I and toluidine blue staining exhibited positive results. The fibrochondrocytes cytoplasms were rich in mictochondria and endoplasm reticulum. Conclusion: The fibrochondrcytes isolated from one-month-old goat TMJ disc have good proliferation ability in vitro and cells from passage 1 to 3 might be used as seed cells for TMJ disc tissue engineering.

Objective To determine the preventive effect of Celecoxib on postoperative adhesion formation and its mechanism. Methods We divided 80 SD rats into 5 groups: Groups A, B, C, H and S. Rats in Groups A, B, C and H received the operation of peritoneum rubbing to promote adhesion formation. Group S underwent sham operation. Rats in Group B were given Celecoxib of 40 mg/(kg·d), those in Group C were also given Celecoxib of 20mg/(kg·d), and those in Group H were given sodium hyaluronate (HA) during the operation. On the 8th and 15th postoperative day, half of the rats were sacrificed, the extent of adhesion formation was assessed and the adhesive peritoneum was subjected to immunohistochemistry with VEGF and CD_(34). Results The extent of postoperative adhesion differed significantly among the five groups (P<0.01). Groups B and C had significantly fewer adhesions than Groups H and A. VEGF was expressed most highly in Group A, followed by Groups H, C and B, and most weakly in Group S. CD34 was expressed most highly in Group A, followed by Groups H, C and B, and most weakly in Group S. Conclusion Celecoxib provides durable inhibition of intra-abdominal adhesions in a murine model compared with HA. The mechanism of preventing intra-abdominal adhesion via inhibiting COX-2 is possibly through down-regulated expression of VEGF and reduced microvascular density.