Objective:To investigate the effect of fluvastatin sodium (FS ) on MMP-9 expression in tongue squamous carcinoma Tca81 1 3 cells.Methods:Immunofluorescence method and Western blot were used to detect the level of MMP-9 expression in Tca81 1 3 cells treated by different concentration of FS for 24 h,the data were statistically analyzed.Results:MMP-9 expression in FS treated cells was significantly reduced(P<0.05)compared with control cells.With FS concentration increase the protein expression decreased in a dose-dependant manner detected by the 2 mothods.Conclusion:Fluvastatin Sodium can dose-dependantly inhibit the expression level of MMP-9 in Tca81 1 3 cells.

Adult ; Aged ; Female ; Humans ; Male ; Middle Aged ; Occupational Health ; Pneumoconiosis ; diagnostic imaging ; Radiographic Image Enhancement ; methods ; Young Adult

Objective To explore the action mechanism of Yiqi Huayu Formula for postpartum subinvolution of uterus. Methods Fifty female SD rats were selected model with postpartum subinvolution of uterus was made by injecting escherichia coli in vagina. Rats were randomly divided into 5 groups according to pregnancy time:blank group, model group, Xinshenghua group, and Yiqi Huayu high and low dose groups. Blank group and model group received gavage with water;Yiqi Huayu low and high dose groups received gavage with Yiqi Huayu Formula;Xinshenghua group received gavage with Xinshenghua Granule, once a day for 7 days. Uterine endometrial morphology was observed by HE staining. The contents of NO and NOS were respectively detected by Nitrate reductase method. Results Uterus submucosal hyperemia, bleeding, and endometrial discontinuity with the infiltration of inflammatory cells of rats in the model group suggested that the models were successfully established. Compared with blank group, the contents of NO and NOS in model group were higher significantly. Compared with model group, the contents of NO and NOS significantly decreased in both Xinshenghua group and Yiqi Huayu high and low groups (P<0.01, P<0.01). Compared with Xinshenghua group, Yiqi Huayu high dose group was lower (P<0.05). Conclusion Yiqi Huayu Formula could promote reconstruction and repair of the endometrium by reducing the contents of NO and NOS and inhibiting abnormal uterine spiral arteries relaxation.

Objective To investigate the effects of p38 mitogen-activated protein kinase (MAPK) short hair RNA (shRNA) delivered by lentiviral vectors (pGLV) on cardiac function after myocardial infarction (MI) in aldosterone overload rats and to explore the mechanism.Methods Aldosterone overload rat myocardial infarction model was obtained by ligating the left anterior descending coronary artery.The pGLV-shRNA was constructed,sequenced and injected into rats via tail vein.Rats were divided into 3 groups:pGLV-shRNA group (n=6),pGLV-shRNA-NC group (n=6,contained a nonsense shRNA) and the sham-operation group (n=6).Cardiac function was measured by cardiac ultrasound.Apoptosis was assessed by transferase (TdT)-mediated biotin-16-dUTP nick-end labelling (TUNEL).The p38 MAPK mRNA expression was analyzed by RT-PCR.The protein expressions of p38 MAPK and caspase-3 were detected by Western blot.Results Compared with the sham-operation group,cardiac systolic function was reduced and myocardial apoptosis index was significantly increased [(31.26 ± 4.45) ％ vs.(15.20 ± 2.18) ％,P ＜ 0.01] in pGLV-shRNA-NC group.The mRNA and protien expressions of p38MAPK and caspase 3 protein expression were significantly increased in pGLV-shRNA-NC group (all P＜0.01).Compared with pGLV-shRNA-NC group,cardiac function was improved,myocardial cell apoptosis index was reduced [(22.35±3.59)％ vs.(31.26±4.45)％,P＜0.05],and the mRNA and protien expressions of p38MAPK and caspase 3 protein expression were decreased in pGLV-shRNA group (all P＜0.05).Conclusions Cardiac dysfunction is associated with p38MAPK-mediated myocardial apoptosis in aldosterone overload MI rats.pGLV-shRNA may inhibit cardiomyocyte apoptosis and improve postMI cardiac function.

To investigate the epidemic and evolutionary trends of enterovirus (EV) in the external environment of Yunnan Province, China, molecular typing was performed on 4 EV strains that were isolated from environmental sewage in Yunnan. The VP1 region of isolates was amplified by RT-PCR using universal enterovirus primers, and the amplified VP1 region was sequenced for GenBank BLAST search and genotype analysis. The 4 EV strains were identified as ECHO7. Their nucleotide and amino acid homologies with the VP1 sequences of 68 ECHO7 strains retrieved from GenBank were measured by Mega software analysis. Our findings showed that ECHO7 strains from environmental sewage and population samples were in different evolutionary branches. These strains showed typical geographical and temporal differences; In addition, there were different transmission chains at the same time and in the same area. ECHO7 strains isolated from sewage water and patients with acute flaccid paralysis during the same period in Yunnan belonged to different clusters and evolved at different speeds. Special concerns are needed for this problem. Continuous molecular biological surveillance of human EV in the external environment of Yunnan will provide strong support for early warning of EV diseases.
China ; Databases, Genetic ; Enterovirus ; genetics ; isolation & purification ; Evolution, Molecular ; Humans ; Molecular Epidemiology ; Sequence Analysis ; Sewage ; virology

To develop a core-shell structure pDNA-CaPi-PLGA nanoparticles (CS-pDNA-CaPi-PLGA-NPs), calcium phosphate-pDNA nano complexes (CaPi-pDNA) were encapsulated inside of PLGA shells. The characteristics of the nanoparticles, including morphology, average particle size, zeta potential, entrapment efficiency, loading efficiency, stability in medium, pDNA protection ability from nuclease degradation, in vitro release, cytotoxicity and cell transfection were investigated and compared with the embedded structured CaPi modified PLGA nanoparticles (embedded-pDNA-CaPi-PLGA-NPs). The results showed that the obtained CS-pDNA-CaPi-PLGA-NPs were spherical in shape with an average particle size of (155 +/- 4.5) nm, zeta potentials of (-0.38 +/- 0.1) mV, entrapment efficiency of (80.56 +/- 2.5)% and loading efficiency of (1.16 +/- 0.04)%. The CS-pDNA-CaPi-PLGA-NPs were stable in the release media and could protect pDNA against nuclease degradation. And they also exhibited sustained release of pDNA in vitro. The highest gene transfection efficiency of the CS-pDNA-CaPi-PLGA-NPs in vitro reached (24.66 +/- 0.46)% (after 72 h transfection), which was significantly higher than that of free pDNA [(0.33 +/- 0.04)%, P < 0.01] and the pDNA-PLGA-NPs [(1.5 +/- 0.07)%, P < 0.01]. Besides, the transfection lasted for longer time than that of embedded-pDNA-CaPi-PLGA-NPs and the cytotoxicity of it was significantly lower than that of PEI (P < 0.01). These results indicate that CS-pDNA-CaPi-PLGA-NPs are a promising non-viral gene vector. Key words: gene delivery system; polylactic-co-glycolic acid; calcium phosphate; nanoparticle

Objective To investigate the cerebral blood flow in migraine without aura with three-dimensional arterial spin labeling technology .Methods From January 2013 to February 2016, magnetic resonance perfusion imaging was operated in 20 migraine patients without aura and 20 healthy controls by using arterial spin labeling, to determine their regional cerebral blood flow (rCBF) during migraine attacks and attack-free period.The significant difference was analyzed in rCBF between the two groups .Results The rCBF was significantly lower at the headache side during migraine period ( ( 52.77 ±5.97 ) ml? 100 g-1? min-1 ) than symmetrical side in the migraine patients without aura ((62.72 ±6.65) ml? 100 g-1?min-1 , t=3.780,P<0.01).The rCBF of temporosphenoid lobe in headache side in the migraine patients without aura ((53.97 ±5.87) ml? 100 g-1? min-1) was significantly lower than corresponding region in the control group ((59.21 ±2.35) ml? 100 g-1? min-1, t=4.449, P=0.001).And no significant difference in rCBF was found in migraine patients without aura under attack-free period. Conclusions Three-dimensional arterial spin labeling could quantitatively analyze the cerebral blood flow .Monitoring the perfusion difference in migraine patients could provide some references in the pathogenesis research and therapy.

Objective To investigate the effects of total flavonoids in Gingko Biloba on glucose and lipid metabolism and liver function in rats with insulin resistance. Methods Forty SD rats were randomly divided into normal control group,model group,total flavonoids in Gingko Biloba group and rosiglitazone group(positive drug control group)(n=10).Models of insulin resistance were established by high glucose and high fat diet in model group,total flavonoids in Gingko Biloba group and rosiglitazone group.After treatment for 12 weeks,serum glucose,serum lipids,and parameters of insulin resistance,liver function and anti-oxidation capability were detected in each group,and histologic observations of liver tissues were conducted with adipose staining. Results The serum glucose,insulin resistance index(HOMA-IR),insulin action index(IAI),serum total cholesterol(TC),triglyceride(TG),liver malondialdehyde(MDA) and serum transaminase activity in total flavonoids in Gingko Biloba group were significantly lower than those in model group(P

In order to identify novel genes involved in spermatogenesis, testis cDNA samples from Balb/C mice of different postnatal days were hybridized with the whole mouse genome Affymetrix chip to screen the testis-specific genes. The characteristics of the selected genes were analyzed by RT-PCR as well as other bioinformatic tools. A novel differentially expressed testis-specific gene (GenBank Accession No: NM_029042) in the developmental stages of testes was identified, and named TSCPA. Cellular mapping prediction of TSCPA indicated that its protein was probably expressed in nuclei, and one putative domain (aa 332-377) was anchoring domain of cAMP-dependent type II PK. The result of subcellular localization of GFP-TSCPA fusion protein in Cos-7 cells showed that TSCPA protein was expressed in nuclei. RT-PCR analysis revealed that TSCPA was expressed specifically in mouse and human testis. TSCPA gene was expressed weakly in 21-day-old mouse testis and the expression was increased gradually from 38th day to 6th month of mouse testes. No expression of hTSCPA was found in cryptorchidism and Sertoli-cell-only syndrome patients. It was concluded that the expression profile of TSCPA in human and mice indicated that TSCPA might play an important role in spermatogenesis.

Objective To explore the correlation between the reliability and validity of Brunel balance assessment(BBA)with the activities of daily living(ADL).Methods The BBA,ADL and walking ability test were performed on 215 patients conforming to the inclusion standard by two professionals.The Pearson correlation analysis,factor analysis and descriptive statistical analysis were adopted.Results The BBA total score and Cronbach's α coefficient in 3 dimensions was 0.852～0.941(P＜0.01),moreover the relative coefficient of each item with its dimension was higher that that of other dimensions;3 common factors were extracted by the factor analysis,the contribution rate was 83.916％;but BBA had the ceiling effect,the relative coefficient of BBA with ADL and walking ability was 0.284-0.709(P＜0.05).Conclusion BBA has a good reliability and validity and can better reflect the functions of ADL and walk.