Frequent Import and Multiple Sources of Dengue Fever have Changed the Epidemic Situation of the Disease in Fujian Province, China / 生物医学与环境科学（英文）

Objective@#The aim of this study was to update the epidemic situation of dengue fever (DF) and provide new insights for the consideration of disease control in Fujian province, China.@*Methods@#Details about DF cases in Fujian reported during 2004-2017 were collected and analyzed. The envelope (E) genes of isolates of dengue virus (DENV) were sequenced for phylogenetic analysis.@*Results@#The number of imported DF cases had increased dramatically since 2013, and the source regions expanded from Southeast Asia to South Asia, America, Oceania, and Africa, as well as the surrounding provinces. This resulted in local outbreaks and indigenous cases of DF that occurred more frequently, with 10 of 13 local outbreaks and 85.9% (1,252/1,458) of indigenous cases reported in 2013-2017. Compared with only two coastal cities before 2013, four coastal and one inland city in 2013-2017 experienced the local DF outbreaks. The phylogenetic analysis of E genes confirmed that the import of DENV, not only from abroad but also from the surrounding provinces, played an important role in dissemination and local outbreaks of DF in Fujian.@*Conclusions@#The frequent import of DF cases from not only abroad but also the surrounding provinces resulted in increased incidence, frequent local outbreaks, and expansion of distribution in Fujian in recent years. There is a need for urgent measures to improve disease control in this province.

Expression of PTEN in atherosclerosis and its effect on proliferation and apoptosis of vascular endothelial cells / 中国免疫学杂志

Objective:To investigate the expression of PTEN in atherosclerosis and its effect on the proliferation and apoptosis of vascular endothelial cell (VEC).Methods:The atherosclerotic mouse models were constructed,and the levels of PTEN in atherosclerotic tissues were detected by Real-time,PCR and Western blot;Rat VEC was treated with different concentrations of ox-LDL, cell proliferation activity was detected by MTT.VEC was transfected with PTEN overexpression vector(pSicoR-PTEN),processing cells with ox-LDL,the levels of PTEN was detected by Real-time,PCR and Western blot,cell proliferation was detected by MTT,apoptosis was detected by flow cytometry,the levels of p-STAT3,STAT3 and Cleaved Caspase-3 were detected by Western blot.Results:The level of PTEN in atherosclerotic tissue was lower than that in normal arterial tissue(P<0.05).The survival rate of VEC decreased obviously after treatment with different concentrations of ox-LDL, and the cell survival rate decreased with the increase of ox-LDL concentration.The expression of PTEN decreased in VEC after ox-LDL action,transfection of pSicoR-PTEN could increase the expression level of PTEN in VEC.The apoptotic rate of VEC increased after ox-LDL treatment,elevated levels of Cleaved Caspase-3 in cells,the level of p-STAT3 decreased,compared with normal VEC,and the difference was statistically significant (P<0.05).After transfection of pSicoR-PTEN,the survival rate and p-STAT3 level of VEC were significantly increased after ox-LDL treatment,but the apoptosis rate and the level of Cleaved Caspase-3 were significantly decreased,compared with the cells treated with pure ox-LDL,the difference was statistically significant(P<0.05).Conclusion:Downregulation of PTEN expression in atherosclerosis,PTEN inhibits the proliferation and apoptosis of VEC by ox-LDL,the mechanism of action may be related to the activation of STAT3 signaling pathway.

Exosomes from bone marrow mesenchymal stem cells regulate the balance of Foxp3+ Treg/Th17 in asthmatic mice / 中国组织工程研究

BACKGROUND: Imbalance of Th1/Th2 immune response is an crucial pathophysiological manifestation of asthma, but recent studies have proved that asthma also has a close correlation with the imbalance of Foxp3+Treg/Th17. Accumulating evidence indicate that the immunoregulatory capacity of mesenchymal stem cells are mainly related to exosomes secreted by the cells. OBJECTIVE: To observe the effect of bone marrow mesenchymal stem cell exosomes on Foxp3+Treg cells, Th17 T cells and airway inflammation of asthmatic mice as well as cytokines in the bronchoalveolar lavage fluid. METHODS: Twenty-seven BALB/c mice of SPF grade were randomly divided into three groups: normal control group, asthmatic model group, and exosomes group. Except the normal control group, each mouse in the other groups was sensitized by ovalbumin to establish asthma models. In the exosomes group, each mouse was intravenously administrated with exosomes at 21 days of sensitization. At 24 hours after the final administration of ovalbumin, the proportion of Foxp3+Treg and Th17 in the sleep of asthmatic mice as well as the expression of CTLA-4 and PD-1 in Foxp3+Treg cells were detected by flow cytometry. The total number of inflammatory cells, and the number of eosinophils, lymphocytes, monocytes and neutrophils in the bronchoalveolar lavage fluid were counted to analyze the degree of airway inflammation in the combination with pathological observation. We also detected the expression of interleukin-4,5,13,10,17 and interferon-γ in the bronchoalveolar lavage fluid as well as p27kip1in CD4+T cells. RESULTS AND CONCLUSION: (1) The proportion of Foxp3+Treg in splenic lymphocytes and the CTLA-4 and PD-1 expression in Foxp3+Treg were significantly higher in the exosomes group than the asthmatic model group (P < 0.01). (2) The proportion of Th17 in splenic lymphocytes was ranked as follows: asthmatic model group > exosomes group > normal control group (P < 0.01). (3) The total number of inflammatory cells and the number of eosinophils, lymphocytes, neutrophils and monocytes in the bronchoalveolar lavage fluid were ranked as follows: asthmatic model group > exosomes group > normal control group (P < 0.01). (4) Pathological observation of the lung showed that the asthmatic mice appeared to have severest airway inflammation. However, mesenchymal stem cell exosomes could significantly alleviate the airway inflammation. (5) The detection of cytokines in the bronchoalveolar lavage fluid showed that levels of interleukin 13 and interleukin 17 were significantly reduced (P < 0.05, P < 0.01), while the level of interleukin 10 increased (P < 0.01). (6) The p27kip1expression in the CD4+T cells was obviously higher in the exosomes group than the asthmatic model group. In conclusion, exosomes from bone marrow mesenchymal stem cells can reverse the imbalance of Foxp3+Treg/Th17 and significantly inhibit the airway inflammation in asthmatic mice.

Treatment of nonunion of femoral shaft fracture after initial locked intramedullary fixation with plate and xenogenic bony plate / 中国骨伤

<p><b>OBJECTIVE</b>To investigate the clinical effects of plate and xenogenic bony plate for the treatment of nonunion of femoral shaft fracture after initial fixation with locked intramedullary nailing.</p><p><b>METHODS</b>From February 2006 to June 2013, 21 cases with nonunion of femoral shaft fracture after initial fixation with locked intramedullary nailing were treated with femoral plate and contralateral xenogenic bony plate. There were 12 males and 9 females with an average age of 34.8 years old (ranging from 18 to 62 years). The time of nonunion was 9 to 18 months (averaged 12.8 months). The clinical outcomes of the treatment were evaluated by Merchan assessment.</p><p><b>RESULTS</b>All of the patients were primary healing, and on complications such as infection,fat embolism, internal fixation breaking or rotational deformity, shortening were occurred. All the cases were followed up for 13.2 months (ranging from 8 to 24 months). Nineteen cases were bone healed,the time of union averaged 6.2 months (ranging from 4 to 9 months). Two cases appeared delayed union and gained bony union after 7 to 13 months' observation. According to the criterion of Merchan,the results were excellent in 13 cases, good in 6 cases, poor in 2 cases.</p><p><b>CONCLUSION</b>Treatment of nonunion of femoral shaft fracture after initial locked intramedullary fixation with plate and xenogenic bony plate has advantages of high curative rate and low complications, good postoperative function recovery, it is a reliable treatment to elevate the stability of fixation and promote the osteogenesis.</p>

Chemical constituents and cytotoxicity assay research in small polar substances from Vitis thunbergii var. taiwaniana / 中国中药杂志

This article studied the chemical constituents from the aerial part of Vitis thunbergii var. taiwaniana. The 60% ethanol extract was eluted with 95% ethanol though HP-20 macroporous adsorption resin column. 12 compounds, including (1) betulinic acid, (2)2, 2, 2'-bis (4-hydroxyphenyl) propane bis (2, 3-epoxypropyl) ether, (3) eriodictyol, (4) trans-ε-viniferin, (5) (+)-cis-ε-viniferin, (6) kobophenol A, (7) ampelopsin A, (8) nepalensinol B, (9) cis-miyabenol C, (10) cis-vitisin B, (11) cis-gnetin H and (12) (+)-hopeaphenol, were separated by using normal phase silica gel, ODS, Sephdadex LH-20 column chromatographies and semi-preparative or preparative HPLC. Compounds 2, 5, 6, 8, 9, 10, 11 were separated from the genus Vitis for the first time and compounds 3, 7, 12 were separated from Vitis thunbergii var. taiwaniana for the first time. At a concentration of 50 μmol · L(-1), compound 6, 7 and 11 showed strong cytotoxicity against MCF-7 cell lines with the inhibition rate of 66.58%, 57.16%, 52.84%, respectively.

Inhibitive effect of IL-24 gene on CD133(+) laryngeal cancer cells

OBJECTIVE@#To explore the inhibitive and apoptosis inductive effect of IL-24 genes on CD133(+) laryngeal cancer cells in Hep-2 line.@*METHODS@#Human peripheral blood monocytes were isolated. The total RNA was extracted by using Trizol method and reverse transcripted into cDNA using RT-PCR method. Primers P1 and P2 was designed for the amplification of human IL-24 genes. After confirmation of agarose gel electrophoresis tests, TA was cloned into pMD19-T simple vector. Nhe I and Xho I double digesting human IL-24 and pIRES2-ZsGreen1 and eukaryotic expression vector were used to establish the pIRES2-ZsGreen1-hIL-24 vector, and detected by enzyme digestion and gene sequencing methods. Flow cytometry (FCM) was used to isolate CD133(+) cells from Hep-2 cells. CD133(+) cells were transfected with pIRES2-ZsGreen1-hIL-24 through liposome 2000. After detection, MTT and FCM were used to observe the effect of IL-24 gene on CD133(+) laryngeal cancer Hep-2 cells.@*RESULTS@#Lipotin mediated transfection of recombinant pIRES2-ZsGreen1-hIL-24 plasmid into CD133(+) Hep-2 could expressed IL-24 gene in cells stably. MTT results showed that IL-24 transfected group was significantly suppressed compared to empty vector group and control group (P<0.05); FCM results showed that the apoptosis rate of experimental group increased significantly compared to empty vector group and control group (P<0.05).@*CONCLUSIONS@#IL-24 gene expressions can inhibit proliferation of CD133(+) laryngeal cells in Hep-2 line and promote their apoptosis.

Molecular epidemiology of HFMD-associated pathogen coxsackievirus A6 in Fujian Province, 2011-2013 / 病毒学报

In order to characterize the molecular epidemiology of HFMD-associated Coxsackievirus A6 (CVA6) in Fujian Province, a total of 1340 specimens from non-EV71 non-CVA16 HFMD patients were collected during 2011-2013. Isolated virus strains were identified and subtyped. Full-length coding regions for the VP1 gene of the predominant serotype CVA6 isolates were amplified and sequenced. Among the 375 non-EV71 non-CVA16 HFMD cases confirmed by virus isolation and molecular subtyping, 182 (48.5%) were found to be caused by CVA6, accounting for 7.9%, 16.2% and 39.6% HFMD-associated enteroviruses in FujianProvince during 2011, 2012, and 2013, respectively. Compared with general features observed in the HFMD epidemic, no difference in CVA6-specificity or severity rates was observed between geographical origins, gender, or age groups. Nucleotide sequence analyses of VP1 genes revealed high diversity levels of 16.2%-18.6% among CVA6 strains from Fujian Province, in contrast to the prototype CVA6 strain, and showed low levels of diversity in the amino acid sequences (4.3%-6.2%). Phylogenetic analysis also indicated that CVA6 isolates from Fujian Province were distinct from the prototype strain and other isolates from abroad; however, it was homologous to domestic strains, although the Fujian isolates clustered into multiple branches. These results suggested that significant changes in the pathogenic spectrum of HFMD in Fujian Province occurred during 2011-2013, as CVA6 was one of the predominant serotypes of HFMD. CVA6 isolates from Fujian Province were co-circulating and co-evolving with other domestic strains as multiple closely related CVA6 transmission chains were observed in Fujian Province overall and within each prefecture.

Inhibitive effect of IL-24 gene on CD133

Objective: To explore the inhibitive and apoptosis inductive effect of IL-24 genes on CD133

Influence of fast inhibition to virus replication on immune rejection and prognosis of acute-on-chron-ic livre failur e patients / 中国医师杂志

Objective To analyze the result of treatment for acute-on-chronic liver failure patients with fast high efficiency Nucleoside and to explore the relations among inhibition to virus replication , liver failure development and immune rejection .Methods Sixty-two cases of acute-on-chronic liver failure pa-tients with HBV DNA(+) were divided into study group (treated with a kind of fast and nucleoside , n =30) and control group( n =32).HBV DNA,CD4 +T,CD8 +T, C3,C4 TBIL,PTA were observed at treat-ment 0w,2w and 4w.Results All of the study and control group patients , serum HBV DNA were positive before treated.And the levels of CD4+,CD8 +,C3,C 4,TBIL,PTA of study group were not significantly compared with control group .At treatment 2w , the rate of HBV DNA diverted negative in study group 90.0%(27/30), was significantly more then control group (9.4%, 3/32)(χ2=37.14 , P <0.01).But the CD4 +,CD8 +,C3,C4,TBIL,PTA levels were not significantly however between study and control group . At treatment 4w ,the rate of HBV DNA diverted negative in study group (96.7%, 29/30), was significant-ly more then control group(12.5%,4/32) (χ2 =40.74, P <0.01).CD4 +, CD8 +,C3,C4,TBIL,PTA levels of the study group were significantly more compared with the control group .The CD4 +level of study group (495.33 ±89.91)cells/ml, was higher significantly then control group (270.34 ±97.74)cells/ml( t=9.42, P <0.01),the CD8 +level (571.03 ±120.15 ) cells/ml, was higher significantly then control group(224.88 ±79.68)cells/ml( t =13.45, P <0.01).The C3 level of the study group (0.28 ±0.11) g/L, was lower significantly then control group ( 0.68 ±0.13 ) g/L ( t =13.13 , P <0.01 ) , the C4 level (0.12 ±0.06)g/L, was lower significantly then control group (0.23 ±0.10)g/L( t =4.92, P <0.01). The TBIL level of study group ( 653.93 ±131.02 )μmol/L, was higher significantly then control group (285.63 ±154.63)μmol/L( t =10.09, P <0.01),the PTA level (17.13 ±7.07)%, was lower signifi-cantly then control group(50.94 ±13.68)%( t =12.10, P <0.01).The death rate of the study group( 57.9%) was higher significantly compared with the control group (28.1%)(χ2 =6.39, P <0.05).Con-clusion Treatment of chronic severe hepatitis with fast and high efficiency nucleoside may arise the T cell subset level and make the immune rejection strength , as a result the liver failure maybe far away from cure .

Humanistic spirit in evidence-based medicine and harmonious doctor-patient relationship / 中华医院管理杂志

Evidence-based medicine mirrors the natural and social properties of human being,harmoniously integrating scientific spirit and humanistic spirit. Discussions were made on such aspects as the relationship between human spirit and harmonious doctor-patient relationship. The humanistic spirit of evidence-based medicine, and the humanistic spirit of evidence-based medicine as used in building harmonious doctor-patient relationship. The authors point out the following: 1) Medical science itself is a wealth of humanistic sprits, and medicinal science can better serve human being with humanistic spirit;2) Evidence-based medicine is completely in line with medical humanities, which scientifically reveals the "People-oriented medicine" as the essential attribute of human sciences;3) Modem clinical medicine has unveiled the evidence-based era. Based on these findings, the authors hold that in such an era,exploration and understanding of the human spirit as the core of evidence-based medicine and focusing on the cultivation of medical humanistic spirit, will be conducive to building a harmonious doctor-patient relationship.

Clinical value of (18)F-FDG positron emission tomography-computed tomography in local liver neoplasm ablation / 南方医科大学学报

<p><b>OBJECTIVE</b>To assess the value of (18)F-fluoro-2-deoxy-D-glucose positron emission tomography-computed tomography ((18)F-FDG PET-CT) in ultrasound-guided local ablation of malignant liver tumors.</p><p><b>METHODS</b>Thirteen patients with 35 local residual tumor foci following previous tumor ablation underwent (18)F-FDG PET-CT and ultrasound-guided local ablation with intratumoral alcohol injection.</p><p><b>RESULTS</b>After the second local ablation guided by (18)F-FDG PET-CT and ultrasound, radioactive defects were detected in the corresponding location in 31 of the 35 residual foci, and after the third local ablation, the other 4 foci also showed radioactive defects.</p><p><b>CONCLUSION</b>(18)F-FDG PET-CT can sensitively and accurately identify tissue necrosis and residual tumors, and serves as an excellent approach for ultrasound-guided local ablation of local residual tumors.</p>

Clinical significance of VEGF levels in serums of colorectal cancer patients at stage IV / 南方医科大学学报

<p><b>OBJECTIVE</b>To investigate the clinical significance of vascular endothelial growth factor (VEGF) levels in serums of colorectal cancer patients at stage IV.</p><p><b>METHODS</b>Using enzyme linked immunosorbent assay (ELISA) to detect the VEGF levels in serums of 45 colorectal cancer patients at stage IV, and 20 healthy served as normal control.</p><p><b>RESULTS</b>The mean concentration of VEGF in 45 colorectal cancer patients at the 7 day after operation were significantly lower than that before operation (P<0.01). The mean concentration of VEGF in the patients who benefit from bevacizumab showed no statistical difference from the levels of who did not benefit (P=0.554).</p><p><b>CONCLUSION</b>The VEGF levels in colorectal patients at stage IV are lowed as the load of tumor decrease. The circulating levels of VEGF seem not predict the response to bevacizumab in colorectal cancer patients at stage IV.</p>

Clinical research of bevacizumab in combination with irinotecan, fluorouracil and leucovorin for advanced metastatic colorectal cancer / 中华胃肠外科杂志

<p><b>OBJECTIVE</b>To evaluate the efficacy of bevacizumab in combination of irinotecan,fluorouracil and leucovorin for metastatic colorectal cancer treated by failed prior oxaliplatin -based regiment.</p><p><b>METHODS</b>Sixty-two patients were randomly divided into two groups, group A of 30 patients received bevacizumab plus irinotecan, fluorouracil and leucovorin, group B of 32 patients received irinotecan, fluorouracil and leucovorin. The response rate,change of tumor markers,one year survival rate and safety were observed.</p><p><b>RESULTS</b>Tumor response rate was 30% in group A, 21.8% in group B respectively. Disease control rate(CR+PR+SD) was 80% in group A, 50% in group B. The obvious change of concentration of tumor markers was observed between pre-treatment and post-treatment, which was significantly different in group A(P<0.05). One year survival rate, median of time to progression and median duration of survival between group A and group B were 26.7% vs 18.8%, 5.9 months vs 3.9 months, 10.9 months vs 8.9 months(P<0.05). The adverse effect in group A was the same as group B. Bevacizumab was associated with hypertension and bradycardia.</p><p><b>CONCLUSIONS</b>The chemotherapy of bevacizumab combined with irinotecan, fluorouracil and leucovorin results in better efficacy in patients with progressive metastatic colorectal cancer.</p>

Nuclear receptor Nur77 inhibits oxidized low density lipoprotein induced lipid loading in macrophages / 中华心血管病杂志

<p><b>OBJECTIVE</b>To observe the effect of Nur77 on lipid loading in macrophages exposed to 40 microg/ml oxidized low density lipoprotein (ox-LDL).</p><p><b>METHODS</b>Stable RAW264.7 strain expressing green fluorescent protein (GFP) or GFP-Nur77 was established by G418 screening after transfection with corresponding plasmids and identified by Western blot. After 24 h stimulation with ox-LDL, intracellular lipid loading of each strain was observed by Oil Red O dyeing, and the intracellular cholesterol level was measured by liquid chromatographic-mass spectrometry (LC-MS). The transcriptional changes of CD36 and ABCA1 were monitored by Real Time Quantitative-PCR, while the expressions of these two proteins were assayed by flow cytometry and Western blot, respectively.</p><p><b>RESULTS</b>After 24 h stimulation with ox-LDL, intracellular total cholesterol and esterified cholesterol concentration in GFP-Nur77-RAW264.7 were significantly dropped by 26.15% and 30.93% respectively (P < 0.05 vs. GFP-RAW264.7). The transcription and expression of ABCA1 in GFP-Nur77-RAW264.7 were significantly increased while the transcription and expression of CD36 were significantly reduced (all P < 0.05 vs. GFP-RAW264.7).</p><p><b>CONCLUSION</b>Orphan nuclear receptor Nur77 reduced ox-LDL induced intracellular lipid loading in macrophages by inhibiting lipid influx and enhancing lipid efflux.</p>

Expressions of Survivin and vascular endothelial growth factor in hepatocellular carcinoma and their clinical significance / 南方医科大学学报

<p><b>OBJECTIVE</b>To assess the correlations between Survivin and vascular endothelial growth factor (VEGF) in hepatocellular carcinoma (HCC) and their clinical significance.</p><p><b>METHODS</b>The expressions of Survivin and VEGF in 50 HCC specimens and 20 normal hepatic tissue specimens were detected by immunohistochemistry, and the results were analyzed in relation to the patients' clinicopathologic characteristics.</p><p><b>RESULTS</b>Of the 50 HCC specimens, 32 (64.0%) were positive for Survivin expression, and 34 (68.0%) were positive for VEGF expression. Survivin expression was not detected in normal hepatic tissues, and 2 (10%) of these tissues were positive for VEGF, showing significant difference in Survivin and VEGF expressions between HCC specimens and normal hepatic tissues. Survivin and VEGF expressions were not correlated to the patients' gender, age, tumor size, degree of differentiation and alpha fetoprotein level (P<0.05), but related to the clinical stage and lymph node metastasis of HCC (P<0.05). Correlation analysis indicated a close correlation between the expressions of survivin and VEGF in the HCC specimens (chi 2=6.69, P<0.05).</p><p><b>CONCLUSION</b>Survivin and VEGF are over-expressed in HCC tissues, and may theoretically serve as the targets of molecular targeted drugs. Detection of the expressions of Survivin and VEGF in HCC tissues may provide assistance for prognostic evaluation of the patients.</p>

Avastin combined with cisplan inhibits malignant ascites production in nude mice bearing transplanted ovary carcinoma with high VEGF expression / 南方医科大学学报

<p><b>OBJECTIVE</b>To establish a nude mouse model of malignant ascites with human ovarian carcinoma cell line OVCAR3 which highly expresses VEGF and evaluate the therapeutic of Avastin combined with cisplan.</p><p><b>METHODS</b>Forty-eight nude mice with malignant ascites resulting from intraperitoneal transplantation of human ovarian carcinoma cell line OVCAR3 were treated with intraperitoneal injection of Avastin, cisplan, their combination, and PBS, respectively, to observe the effect on ascites development, VEGF content in the ascites, peritoneal permeability, development of new vessels and number of tumor cells in the ascites.</p><p><b>RESULTS</b>Avastin obviously inhibited ascites accumulation and peritoneal capillary permeability, reduced VEGF protein level and microvascular density in the tumor tissues and the number of red cells and tumor cells in the malignant ascites, and prolonged the survival of the mice. The combination of Avastin and cisplan further enhanced the therapeutic efficacy of Avastin.</p><p><b>CONCLUSION</b>The bio-chemotherapeutic strategy with Avastin combined with cisplan can be a promising method for treatment of malignant ascites.</p>

Effect of retinoid X receptor activation on oxidized low-density lipoprotein induced cell differentiation of murine macrophage cell line into dendritic like cells / 中华心血管病杂志

<p><b>OBJECTIVE</b>To investigate the effect and related mechanism of retinoid X receptor (RXR) activation on oxidized low-density lipoprotein (ox-LDL) induced differentiation of macrophage into dendritic cell.</p><p><b>METHODS</b>RAW264.7 murine macrophage cell line was cultured with ox-LDL for 48 h in the absence and presence of RXR activator 9-cisRA or SR11237. Cell morphology was observed by phase contrast microscope and cell surface markers involved in dendritic cell immune maturation and activation was analyzed by FACS. Cellular reactive oxygen species production was detected by CM-H2DCFDA fluorescent probe.</p><p><b>RESULTS</b>ox-LDL-treated RAW264.7 murine macrophage cell line differentiated into dendritic like cells after 48 h and cell surface markers CD40, CD86, CD83, MHC Class II and CD1d were upregulated. These changes could be attenuated by cotreatment with 9-cisRA or SR11237. Upregulated cell surface markers CD40, CD86, CD83, MHC Class II and CD1d by ox-LDL were decreased about 47%, 43%, 48%, 32% and 17% respectively by 9-cisRA and 38%, 38%, 46%, 36% and 32% respectively by SR11237. The effect of 9-cisRA and SR11237 was dose dependent. Cellular reactive oxygen species were significantly increased in ox-LDL-treated RAW264.7 cells (MFI 38.24 +/- 4.20 vs. 4.46 +/- 0.39, P < 0.05) and which was significantly reduced by 9-cisRA (10(-7) mol/L) and SR11237 (10(-6) mol/L) to 12.60 +/- 1.52 and 17.89 +/- 1.91 respectively (all P < 0.05).</p><p><b>CONCLUSION</b>RXR activation partly inhibits the differentiation of ox-LDL induced macrophage into dendritic cell by reducing oxidative stress injury.</p>

Efficacy of Avastin in combination with irinotecan for metastatic colorectal cancer / 南方医科大学学报

<p><b>OBJECTIVE</b>To evaluate the efficacy of Avastin in combination with irinotecan for metastatic colorectal cancer.</p><p><b>METHODS</b>Ninety patients were randomly divided into 3 equal groups to receive Avastin plus irinotecan (group A), FOLFIRI (group B) and FOLFOX7 (group C) for two cycles, respectively. The response rate and changes in tumor maker levels were observed.</p><p><b>RESULTS</b>The tumor response rate was 43.3% in group A, 27.7% in group B and 30.0% in group C. The disease control rate (complete response+partial response+stable disease) was 80% in group A, 53.3% in group B and 50.0% in group C. Obvious changes in tumor marker levels were observed in the 3 groups after treatment, which were most conspicuous in group A (P<0.05).</p><p><b>CONCLUSION</b>The addition of Avastin to irinotecan chemotherapy results in significant improvement of clinical efficacy in patients with metastatic colorectal cancer.</p>

Safety and immunogenicity of split vaccines of influenza viruses / 中华实验和临床病毒学杂志

<p><b>OBJECTIVE</b>To evaluate the safety and immunogenicity of influenza split vaccine.</p><p><b>METHODS</b>According to the criteria of No.2002SL0043, instruction of application for new drug in clinical trial issued by the State Food and Drug Administration, 876 healthy persons were divided at random into vaccine group and control group. The trial was performed with the double blind method. Local and systemic adverse reactions were observed within 3 days after the vaccine group subjects were vaccinated. The antibody response to vaccines was detected with hemagglutination inhibition (HI) test. Numbers of seroconversions and HI titers greater than or equal to 40, as well as the mean geometric titer increase in HI were analyzed.</p><p><b>RESULTS</b>There was no significant difference in local and systemic adverse reaction between vaccine and control groups. Meanwhile there was also no significant difference in seroconversions and protective level between two groups. However, there was obvious difference in mean geometric titer increase of antibody against H1N1 virus, while there was no significant difference in that of antibodies to H3N2 and type B viruses.</p><p><b>CONCLUSIONS</b>The safety and immunogenicity of both vaccines are excellent.</p>