Background Fractalkine is involved in the impairment of endothelium by mediating inflammatory cell chemotaxis.Aspirin inhibites many kinds of cytokine expression.Objective To investigate the effect of aspirin on tumor necrosis factor ?(TNF-?) stimulated fractalkine expression in human umbilical vein endothelial cells (HUVEC) and its mechanism.Methods HUVEC were grouped as follows:control group;TNF-?-stimu- lated;TNF-?+NS-398;TNF-?+PDTC and TNF plus various concentration of aspirin (0.02,0.2,1.5 mmol/L). The level of mRNA and protein expression of fractalkine and nuclear factor(NF)-kB p65 was determined by RT- PCR and Western blot.Results 1)Fractalkine mRNA and protein level was increased after 4 ?g/L TNF-? stim- ulation in HUVEC(both P

Adenocarcinoma ; metabolism ; pathology ; surgery ; Adenocarcinoma, Papillary ; metabolism ; pathology ; surgery ; Antigens, CD ; metabolism ; Carcinoma, Signet Ring Cell ; metabolism ; pathology ; surgery ; Endoglin ; Female ; Humans ; Male ; Microvessels ; pathology ; Middle Aged ; Neoplasm Staging ; Neovascularization, Pathologic ; Receptors, Cell Surface ; metabolism ; SOX9 Transcription Factor ; metabolism ; Stomach Neoplasms ; metabolism ; pathology ; surgery ; Survival Rate

Objective To investigate the effect of recombinant adenovirus mediatied human endostatin (rAD-GFP-ES)on rats with collagen typeⅡinduced arthritis(CIA),and explore the mechanism of inflamma- tion and cytokines inhibition on rats CIA.Methods The rAD-GFP-ES was amplified and purified.The model of rat CIA was induced by intradermal injection of typeⅡcollagen combined with complete Freund's adjuvant(CFA). On the second day after the injection,the therapeutic administration of rAD-GFP-ES(1?10~(11)pfu?kg~(-1)?week~(-1)?4 weeks)were performed to the rats.The mean arthritis index(AI)was scored every week since then.The relative concentrations of ES,IL-I?,TNF-?in sera collected at the fourth week were evaluated by western blotting. Results①The titer of the purified rAD-GFP-ES and rAD-GFP was 6.6?10~(12)pfu/ml and 4.8?10~(12)pfu/ml,re- spectively(A_(260nm)/A_(280nm)＞1.3).②The concentration of ES in sera of the group treated with rAD-GFP-ES was 2.4-lold higher compared to the normal group.③The mean arthritis index of the group treated with rAD-GFP- ES was much lower than that of the model group.The administration of rAD-GFP-ES could significantly de- creas the production of IL-1?and TNF-?in sera.Conclusions①The rAD-GFP-ES is efficiently expressed in vivo.②The rAD-GFP-ES has an inhibitory effect on the arthritis index of rat CIA.③IL-1?and TNF-?are involved in the pathogenesis of RA.The rAD-GFP-ES has an inhibitory effect on the expression of IL-1?and TNF-?in rat CIA.

This study aims to investigate whether the nucleoprotein (NP) of severe fever with thrombocytopenia syndrome virus (SFTSV) can impact the cellular immunity of host cells. Gene segments that encode the NP and non-structural protein (NSs) of SFTSV were inserted into eukaryotic expression vector VR1012. Host proteins that interact with NP and affect immunity were identified with co-immunoprecipitation (IP), SDS-PAGE, mass spectrometry (MS), and Western blot. Co-localization of NP and the identified host proteins was confirmed by confocal microscopy. A 60kD SSA/Ro, a protein related to immunity, interacted with NP, as found by IP and MS. Confocal microscopy showed that NP and SSA/Ro were co-localized in cytoplasm. These results indicated that SFTSV NP may specifically bind to 60kD SSA/Ro and cause a series of immune responses and clinical symptoms.
Bunyaviridae Infections ; genetics ; metabolism ; virology ; HEK293 Cells ; Humans ; Nucleoproteins ; genetics ; metabolism ; Phlebovirus ; genetics ; metabolism ; Protein Binding ; Ribonucleoproteins ; genetics ; metabolism ; Viral Proteins ; genetics ; metabolism

Transient forebrain ischemia-reperfusion(I/R);Brain-derived neurotrophic factor(BDNF);Histone deacetylase 3(HDAC3);Hippocampus Objective To evaluate the effect of transient forebrain ischemia-reperfusion(I/R)on the binding of brainderived neurotrophic factor(BDNF)promoters to histone deacetylase 3(HDAC3)in the hippocampus of rat and investigate its mechanism.Methods The I/R model of SD rats(I/R group)was established by Pulsinelli four-vessel clamping method,and sham operation group(Sham group)was set at the same time,which were observed for the survival of neurons in the hippocampus of rats by Nissl staining,detected for the binding of BDNF promoters(Bdnf-p1,Bdnf-p2,Bdnf-p4 and Bdnf-p6)to HDAC3 by chromatin immunoprecipitation(ChIP)and determined for the expression of brain derived neurotrophic factor antisense(BDNF-AS)by qPCR.Results Compared with Sham group,the quantity of neurons in hippocampal CA1 region of rats decreased significantly in I/R group,while those in CA3 region and DG region showed no significant changes.The binding levels of Bdnf-p1 and Bdnf-p2 to HDAC3 in hippocampal CA1 region decreased significantly in I/R Group(t = 2.575 and 2.241 respectively,each P<0.05),while there was no significant difference in the binding levels of Bdnf-p4 and Bdnf-p6 to HDAC3(t = 1.033 and 0.348 respectively,each P>0.05);The binding levels of Bdnf-p1 and Bdnf-p2 to HDAC3 in CA3 region increased significantly(t = 12.600 and 3.191,P<0.001 and<0.05,respectively),while the binding level of Bdnf-p6 to HDAC3 decreased significantly(t = 4.029,P<0.05)and no significant difference was observed in the binding level of Bdnf-p4 to HDAC3(t = 0.175,P>0.05);In DG region,the binding level of each BDNF promoter to HDAC3 showed no significantly difference(t = 0.630 ～ 1.687,each P>0.05).Meanwhile,the expression level of BDNF-AS in hippocampal CA1 region of rats decreased significantly(t = 2.560,P<0.05),but increased significantly in hippocampal CA3 and DG regions(t = 3.543 and 3.637 respectively,each P<0.01)in I/R group.Conclusion I/R showed a significant effect on the binding level of BDNF promoter to HDAC3 in rat hippocampus,which may play a role by changing the expression level of BDNF-AS.

Objective To survey and analyze characteristics of brucellosis epidemic in Weinan city of Shaanxi province for the purpose of setting up prevention and control measures for the disease. Methods According to "The Executing Plan for the Work of Surveying Brucellosis Disease in Shaanxi Province", 35 villages(towns) of designated monitoring locations and 24 villages (towns) of randomized monitoring locations in five countries of Weinan were chosen to survey brucellosis disease. The five countries were Chengcheng, Dali, Heyang, Tongguan and Hancheng. High risk populations with a history of contacting livestock and livestock products aged between 7 and 60 underwent clinical and serology examination[rose bengal plate agglutination test(RBPT) and standard tube agglutination test(SAT)]. All manipulation methods and judging standards were in accord with the "Diagnostic Standard for Brucellosis" (WS 269-2007). Results In the designated monitoring location, a total of 8664 people at high risk were investigated, among whom 1407 people were tested by RBPT test and 27 people were positive,the positive rate was 1.92%(27/1407); 27 people were tested by SAT test and 27 people were positive, the positive rate was 100% (27/27); 25 people were diagnosed and the diagnosis rate was 92.59%(25/27). In the randomized monitoring location, a total of 3464 people at high risk were investigated, among whom 411 people were tested by RBPT test and 3 people were positive, the positive rate was 0.73%(3/411 ), 3 people were tested by SAT test which were all positive and made a definite diagnosis. Twenty-eight new cases were made a definite diagnosis and its incidence was 2.06 in a hundred thousand(28/1 361 618). Conclusions The infection of human brucellosis in Weinan city stays at higher level. The governments should increase input for the monitoring,investigating and disinfecting to prevent the disease from increasing and outspreading.

AIM:To investigate the clinical effect of anti-vascular endothelial growth factor (VEGF) drugs combined with laser photocoagulation for diabetic macular edema (DME).METHODS: Totally 94 patients (141 eyes) with DME from June to December 2015 in our hospital were selected and randomly divided into combined group of 47 cases (68 eyes, ranibizumab combined with laser therapy) and the control group of 47 cases (73 eyes, laser treatment).The levels of best corrected visual acuity (BCVA), macular central retinal thickness (CRT), total macular volume (TMV) and macular edema level were compared between the two groups at different time after treatment.RESULTS: The mean values of BCVA in the combined group were higher than those in the control group at 2, 6 and 12wk, and the difference was statistically significant (P<0.05).At 2, 6 and 12wk after treatment, the CRT and TMV values of the combined group were lower than those of the control group, the difference was statistically significant (P<0.05).After treated for 12wk, patients with macular edema of combined group was 80.9% in mild level, 17.7% in moderate level, 1.5% in severe level, those of the control group was 60.0%, 31.5%, 5.5%, the difference between the two groups was statistically significant (P<0.05).CONCLUSION: The effect of anti-VEGF drugs combined with laser therapy for DME patients is better than that of single laser therapy alone.

To evaluate the adjuvant effect of recombinant enterovirus 71 (EV71) subunit vaccine formulated with chitosan, rabbits were orally immunized with recombinant VP1 (rVP1) or rVP1 mixed with chitosan adjuvant. Levels of virus-specific IgG and IgA antibodies in sera, mucosal wash buffer (intestine, nasal cavity, and lung), and feces were determined by indirect enzyme-linked immunosorbent assay (ELISA). The titers of neutralizing antibodies against EV71 were determined using cytopathic effect-based neutralizing assay, and levels of cytokines (IFN-gamma and IL-4) secreted from in vitro-cultured rabbit splenic lymphocytes under antigen stimulation were also determined by ELISA. Results showed that immunization with rVP1 alone could only induce low levels of serum IgG and mucosal IgA, while rVP1 combined with chitosan adjuvant were able to induce significantly higher levels of antibodies, rVP1 can only induce neutralizing antibodies when used in combination with chitosan. Levels of IFN-gamma and IL-4 in the group immunized with rVP1 plus chitosan were significantly higher than those in the group immunized with rVP1 only or those in the control groups. Our study lays the foundation for development of oral VP1 vaccine against EV71 infection.
Adjuvants, Immunologic ; administration & dosage ; Animals ; Antibodies, Viral ; immunology ; Chitosan ; administration & dosage ; immunology ; Enterovirus A, Human ; genetics ; immunology ; Enterovirus Infections ; immunology ; prevention & control ; virology ; Female ; Humans ; Rabbits ; Vaccination ; Vaccines, Subunit ; administration & dosage ; genetics ; immunology ; Viral Proteins ; administration & dosage ; genetics ; immunology ; Viral Vaccines ; administration & dosage ; genetics ; immunology

OBJECTIVETo compare the attachment and growth characteristics between human junctional epithelium (JE) and oral epithelium cells.

METHODSThe healthy JE biopsies were derived from the human teeth extracted due to impaction or orthodontic purpose. Enzyme digestion was used to isolate JE cells, which were then cultured in DKGM. The co-culture model of JE cell-tooth slice was built up by adding 3 decalcification cementum slices (5 mm x 3 mm x 1 mm) into sterilized plate containing 1 ml of JE cells (5 x 10(8)/L), 21 slices all together,and incubated in an atmosphere containing 5% CO2 at 37 degrees C for 1-14 days. The attachment structure was observed under transmission electron microscope, and the OE cells was used as control.

RESULTSThe human JE cells were polymorphous in shape and CK19 positive, while OE cells were consisted of equal and closely packed epithelial-like cells in a paving stone arrangement, and CK19 was only strained in a few cells. There were a few cells in JE-slice when co-cultured for 1-3 days, and electron dense plaques on the JE cell surface of the attached slice were observed at 9 days, and 2-3 layer of JE cells and hemidesmosome-like structure formed within 11-14 days. There were more OE cells within 1-3 days, electron dense plaques appeared at 7 days, and stratified epithelium and hemidesmosome-like structure formed in OE-slice at 9 days.

CONCLUSIONSThe cultured JE cells were immature and lower differentiated epithelial cells which were different from OE cells. Under the same condition the growth and attachment of JE cells on the cementum slice surface were slower than that of OE cells. Their attachment strength needs further study.

Cell Count ; Cell Growth Processes ; Cells, Cultured ; Epithelial Attachment ; cytology ; Epithelial Cells ; cytology ; Gingiva ; cytology ; Humans

BACKGROUNDFractalkine is an important chemokine mediating local monocyte accumulation and inflammatory reactions in the vascular wall. Aspirin inhibits inflammatory cytokine expression closely related to atherosclerosis through the way independent of platelet and cyclooxygenase (COX). There has been no report about the effect of aspirin on fractalkine expression. We aimed to determine the fractalkine expression in human umbilical vein endothelial cell (HUVEC) stimulated by tumor necrosis factor (TNF)-alpha and the effect of aspirin intervention.

METHODSSix of 8 HUVEC groups received either different concentrations of aspirin (0.02, 0.2, 1.0, 5.0 mmol/L) or 40 micromol/L pyrrolidinecarbodithioc acid (PDTC) or 0.5 micromol/L NS-398. The other two groups were negative control and positive control (TNF-alpha-stimulated). After being incubated for 24 hours, cells of the 8 groups except the negative control one were stimulated with TNF-alpha (4 ng/ml) for another 24 hours. After that, the cells were collected for RNA isolation and protein extraction.

RESULTSBoth mRNA and protein expressions of fractalkine in HUVEC were upregulated by 4 ng/ml TNF-alpha stimulation. Aspirin inhibited fractalkine expression in a dose-dependent manner at mRNA and protein levels. Nuclear factor-kappa B inhibitor, PDTC, effectively decreased the fractalkine expression. Fractalkine expression was not influenced by COX-2 selective inhibitor NS-398. COX-1 protein expression was not changed by either TNF-alpha stimulation or aspirin, PDTC, NS-398 intervention. Both mRNA and protein expression of COX-2 in HUVEC were upregulated by 4 ng/ml TNF-alpha stimulation. Aspirin decreased COX-2 expression in a dose-dependent manner at mRNA and protein levels.

CONCLUSIONSTNF-alpha-stimulated fractalkine expression is suppressed by aspirin in a dose-dependent manner through the nuclear factor-kappa B p65 pathway.

Aspirin ; pharmacology ; Blotting, Western ; Cell Line ; Chemokine CX3CL1 ; genetics ; metabolism ; Endothelial Cells ; drug effects ; metabolism ; Gene Expression Regulation ; drug effects ; Humans ; Reverse Transcriptase Polymerase Chain Reaction ; Tumor Necrosis Factor-alpha ; pharmacology ; Umbilical Veins ; cytology