Objective To study the differences in serum antioxidant ion status of adults living in different regions and relat-ed influential factors.Methods Serum levels of total antioxidation capacity(TAOC),superoxide dismutase(SOD)and malon-dialdehyde(MDA)were determined in37local residents in Xinjiang(Xinjiang group)and37Tianjin residents(Tianjin group).Results Serum levels of TAOC and SOD were significantly higher in the Xinjiang group than that in the Tianjin group(P0.05)for the MDA between the two groups.The TAOC levels were sig-nificantly higher in the females than that in the males(P

Objective To develop the scale on work values for college students. Methods 63 items were determined through reviewing items in related literatures and scales, experts consulting and panel discussion.528 students from 3 universities in Shanghai were enrolled in the study. The data were analyzed through exploratory factor analysis,discrimination analysis,reliability analysis and other statistical analysis methods. Results College students' work values comprises six dimensions: self-value dimension ( including two sub-dimensions: self-esteem dimension and self-realization dimension), social-value dimension, dimension of the working environment, wages and welfare dimension , job stability dimension, and the dimension of social status. 43 items were reserved after exploratory factor analyses. The coefficient of reliability of the 43 items was 0.943, and the item loading of the 43 items was 0. 321 ～ 0. 792. Conclusion The discernment, internal consistency and validity of the scale accord with psychometric demands.

PUMA (p53 up-regulated modulator of apoptosis) is a recently discovered Bcl-2 family member which could be rapidly induced by p53 and has strong pro-apoptotic effects.PUMA has attracted much attention in the research of life science.PUMA expression results in potent growth suppression of some cancer cells through induction of apoptosis.PUMA can also significantly sensitize some cancer cells to chemotherapeutic agents and irradiation through induction of apoptosis.PUMA is potentially useful in gene therapy of tumor.But recently,researchers have also found that PUMA participates in the process of carcinogenesis and possessed important biological functions.

ObjectiveTo assess the relationship between Candida adhesivity and biofilm formation. MethodsEight Candida strains belonging to 8 species and 1 Saccharomyces cerevisiae strain were cultured in yeast peptone dextrose (YPD) fluid and agar medium respectively. The flocculation and adhesion of Candida were observed. Candida biofilm models were developed in 96-well microculture plates. The kinetics of biofilm formation was measured. ResultsAll the 9 fungal strains had flocculation capability and could adhere to the surface of the yeast peptone dextrose agar medium. After mild shaking of the fluid medium, it is difficult for C. albicans, C. kefyr, C. glabrata and C. tropicalis to resuspend, but easy for Saccharomyces cerevisiae. The adhesivity of C. albicans, C. kefyr, C. glabrata and C. tropicalis was stronger than that of the other Candida strains. Common pathogenic Candida strains could form biofilm, and the metabolic activity of Candida cells in the biofilm increased over time. A significant increment was observed in the ability of C. albicans and C. kefyr to form biofilm compared with the other species(all P ＜ 0.05), and in that of C. tropicalis and C. glabrata compared with C. krusei, C. parapsilosis and C. gulliermondii (all P ＜ 0.05). The nonpathogenic Saccharomyces cerevisiae could not form biofilm. ConclusionsCandida has the ability to adhere and form biofilm,and the ability varies with Candida species. Moreover, the ability to form biofilm positively correlates with the adhesivity of Candida.

AIM: To investigate the effect of compound rhubarb preparation (Kintop) in preventing obesity in rats and its probable mechanism involved. METHODS: Twenty-six newborn SD rats were randomly grouped as rhubarb preparation plus high-energy forage group( n= 8), high-energy forage control group( n= 8) and ordinary forage control group( n= 10). The rats in rhubarb preparation plus high-energy forage group and high-energy forage control group were fed with high-energy forage and those in ordinary forage control group were fed with ordinary forage. The rats in rhubarb preparation plus high-energy forage group were administered by compound rhubarb preparation (40 mg?100 g -1 body weight?d -1 ) from 9th to 17th week. The dynamic changes in body weight, celiac fat weight and adipocytes size were measured. Immunohistochemical analysis of leptin in celiac adipocytes (ABC method) and measurement of serum leptin level (RID method) were performed. RESULTS: The body weight and the wet weights of celiac fat were lower, their adipocytes were smaller and immunohistochemical stainings of leptin were weaker in rhubarb preparation plus high-energy forage group than those in high-energy forage control group. There was an obvious positive correlation between the expression of leptin and celiac fat tissue weight( r= 0.8663, P

Objective To investigate the effects of early continuous renal replacement thempy(CRRT)on acute lung injury and prognosis in severe acute pancreatitis (SAP)patients.Methods 46 SAP patients were divided into the two groups randomly:the control group and CRRT treatment group.The levels of IL-1β,IL-6,TNF-α,the APACHEⅡscore,oxygenation index,the incidence of acute lung injury(ALI)/acute respiratory distress syndrome (ARDS),ICU stay were compared between the two groups.Results The level of interleukin-6(IL-6)in the con-trol group was significantly higher than that in CRRT group in day 1(t=2.265,P<0.05);The levels of interleukin-1β(IL-1β),interleukin-6 (IL-6 ),tumor necrosis factor-α(TNF -α)in the control group were significantly higher than that in CRRT group in day 3(t=2.305,2.471,2.293,all P<0.05);the oxygenation index in the control group was significantly lower than that in CRRT group in day 3(t=2.386,P<0.05);the incidence of ALI/ARDS, the ICU stay days,the fatality rate in the control group were significantly higher than that in CRRT group(P<0.05);there was no significant differences between late group than that early group in gender,age,APACHE Ⅱ score (all P>0.05).Conclusion Early CRRT therapy can eliminate the IL-1β,IL-6 and TNF-αin SAP patients,which can improve the oxygenation index and reduce the incidences of ALI/ARDS,may provide more clinical benefits in the early phase of SAP.

Objective To explore the therapeutic value of modified endoscopic submucosal dissection with ligation (ESD-L) for small tumors originated from gastric muscularis propria.Methods Total of 60 patients with tumors originated from gastric muscularis propria,which was confirmed by endoscopic ultrasonography and smaller than 12 mm and were recruited to the present study.The conventional ESD technique was used to dissect the tumor to the depth of muscularis propria.Then the bottom of the tumor and the beneath muscularis propria were ligated fully with a nylon loop.Further dissection was applied till the whole tumor was isolated.Results All 60 lesions were dissected completely with perforation occurred in 10 cases,which were managed successfully with metal hemoclip.Pathologic diagnosis was obtained in all lesions,and no recurrence was found during the follow-up.Conclusion Modified technique of ESD-L is effective for complete resection of small tumors originated from gastric muscularis propria,which can also decrease the risk of stomach perforation.

Objective To investigate the clinical results of two minimally invasive approaches for calcaneal fractures.Methods The data of 93 patients with displaced intra-articular calcaneal fractures was retrospectively analyzed who were treated from April 2010 to September 2010 in our trauma centre.The patients were divided into two groups according to different minimally invasive approaches.Group A consisted of 50 patients (51 feet) who were treated with the minimally invasive longitudinal approach,including 47 males and 3 females with an average age of 38.22 years.Type Sanders II included 27 feet,type Ⅲ included 18 feet and type Ⅳ included 6 feet.B(o)hler angle was-1.1° on average before operation.Group B consisted of 43 patients (45 feet) who were treated with the sinus tarsi approach,including 42 males and 1 female with an average age of 41.40 years.Type Sanders II included 23 feet,type Ⅲ included 17 feet and type Ⅳ included 5 feet.B(o)hler angle was 2.6° on average before operation.The difference was investigated between the two groups in their operation time,complications and the scores according to the ankle and hindfoot score system of American Orthopaedic Foot and Ankle Society (AOFAS).Results All patients were followed up in the two groups.The average time of follow-up was 28.2 months in Group A and 27.6 months in Group B.The mean operation time was 40.78 mins in Group A and 60.67 mins in Group B.The rate of complications in Group A was 3.92％ (2/51),and 8.89％ (4/45) in Group B.The mean AOFAS score was 85.96 in Group A and 88.60 in Group B.Conclusion No statistically significant difference was found between the mininally invasive longitudinal approach and the sinus tarsi approach in the effect of the treatment for the displaced intra-articular calcaneal fractures.However,the minimally invasive longitudinal approach could be a better choice for its shorter operation time and lower rate of complications than the sinus tarsi approach.

Objective To understand the differences in killing ability and mechanism of human mononuclear macrophages and neutrophils against Leptospira interrogans.Methods Human THP-1 and HL-60 cell lines were respectively pretreated with PMA (phorbol 12-myristate 13-acetate) and ATRA (all-trans retinoic acid) to induce their differentiation into macrophages and neutrophils.Confocal microscopy was used to detect the changes in total ROS (reactive oxygen species) and NO (nitric oxide) levels as well as free Ca2+ concentration ([Ca2+]i) in THP-1 monocyte-derived macrophages and HL-60 cell-derived neutrophils after infection with Leptospira interrogans serogroup Icterohaemorrhagiae serovar Lai strain Lai.Fluorospectrophotometry was applied to analyze the differences in killing ability between THP-1 monocyte-derived macrophages and HL-60 cell-derived neutrophils against intracellular leptospires before and after treatment with total ROS and NO inhibitors and intracellular free Ca2+ chelator.Results The total ROS and NO levels and [Ca2+]i in THP-1 monocyte-derived macrophages and HL-60 cell-derived neutrophils were significantly increased after infection with the spirochete (P<0.05).Moreover,the total ROS and NO levels and [Ca2+]i in the former were significantly higher than those in the latter (P<0.05).The THP-1 monocyte-derived macrophages had stronger killing ability against intracellular leptospires than the HL-60 cell-derived neutrophils (P<0.05).Inhibiting total intracellular ROS,NO or free Ca2+ could result in decreased killing ability of THP-1 monocyte-derived macrophages against intracellular leptospires,but not affect the killing ability of HL-60 cell-derived neutrophils.Conclusion Mononuclear macrophages rather than neutrophils act as the main phagocytes eliminating Leptospira interrogans.High levels of total intracellular ROS,NO and free Ca2+ are closely associated with the ability of mononuclear macrophages to kill Leptospira interrogans.

ObjectiveTo investigate the relationship between metastasis-associated gene 1 ( MTA1 )expression and invasive and metastatic ability of cervical cancer cell. MethodsThree kinds of plasmids pcDNA3( control group), pcDNA3-MTA1 ( MTA1 group) and pSilencer3. 1-MTA1-siRNA ( MTA1-siRNAgroup) were transfected into human cervical cancer cell line CaSki cells. Reverse transcription (RT)-PCR and western blot were used to detected MTA1 mRNA and protein expressions. The effects of MTA1 expression on CaSki cell growth and proliferation, cell migration, adhesion and invasion, and cell cycles were tested by methyl thiazolyl tetrazolium (MTT), clone formation experiment, wound-healing assay, transwell assay, adhesion assay and flow cytometry, respectively. In animal experiment, three groups of cells were inoculated to BALB/c nude mouse subcutaneously to observe tumor formation ability. ResultsCompared with control group, MTA1 mRNA and protein were significantly overexpressed in MTA1 group, while MTA1-siRNA group showed lower MTA1 expression. Compared with control group, MTA1 group showed significantly accelerated cell growth; while MTA1-siRNA group showed decreased cell growth since the second day (P＜0. 05). Clone formation number in control, MTA1 and MTA1-siRNA group were 133 ±6, 169 ± 10 and 57 ±5,respectively. MTA1 group showed accelerated cell formation, while MTA1-siRNA group showed the reverse effect compared with that in control group(P ＜ 0. 05 ). At 24, 48 and 72 hours after wounding, the healing ability of MTA1-siRNA group significantly lagged behind that in the control group, while MTA1 group showed accelerated cell healing ability. The adhesion rate of control, MTA1 and MTA1-siRNA group were (69. 3 ± 3. 6) ％, ( 80. 4 ± 5. 6 ) ％ and ( 39. 2 ± 7.4 ) ％ separately at 90 minutes after cell seeding. In contrast with control group, MTA1 group promoted the adhesion of CaSki cell to matrigel matrix, while MTA1-siRNA group inhibited the adhesion process (P ＜0. 05 ). In the migration assay, the number of cells migrated to the bottom side of the membrane in control,MTA1 and MTA1-siRNA group were 153 ± 17,247 ± 38 and 82 ± 10, respectively. The number of cells in the invasion assay were 231 ± 19,354 ± 36 and 76 ± 7, respectively. Compared with the control group, MTA1 group significantly increased the migration and invasion ability, while MTA 1-siRNA group showed lower cell migration and invasion ability (P ＜ 0. 05 ). In cell cycle experiment, no significant differences of cell proportions including G1, S and G2 stage were found among three groups (P ＞ 0.05).In animal experiment, compared with control group,MTA1 group showed accelersted tumor formation and growth,whilethe MTA1-siRNA group showed the reverse effect ( P ＜ 0. 05 ). ConclusionsMTA1 may play its roles to promote cervical cancer cell invasion, migration, adhesion, as well as cell growth and colony formation, while RNA interference against MTA1 may decrease the malignant phenotypes. This study shows that it will be an effective beginning to explore metastasis mechanisms and cancer gene therapy strategy targeting MTA1 in cervical cancer.