PubMed | Engineering University Hospital of PAPF, Ninth Hospital of Xian and Shenyang University
Type: Journal Article | Journal: BMC oral health | Year: 2016
Malocclusion is a common disease of oral and maxillofacial region. The study was aimed to investigate levels changes of periodontal pathogens in malocclusion patients before, during and after orthodontic treatments, and to confirm the difference between adults and children.One hundred and eight malocclusion patients (46 adults and 62 children at the school-age) were randomly selected and received orthodontic treatment with fixed orthodontic appliances. Subgingival plaques were Porphyromonas gingivalis (P.gingivalis), Fusobacterium nucleatum (F. nucleatum), Prevotella intermedia (P. intermedia) and Tannerella forsythensis (T. forsythensis) collected from the observed regions before and after treatment. Clinical indexes, including plaque index (PLI), gingival index (GI), sulcus bleeding index (SBI), probing depth (PD) and attachment loss (AL) of observed teeth were examined.The detection rates of P.gingivalis, F. nucleatum, P. intermedia and T. forsythensis increased from baseline to the third month without significant difference, and then returned to pretreatment levels 12month after applying fixed orthodontic appliances. Adults percentage contents of P.gingivalis, F. nucleatum, P. intermedia and T. forsythensis were significantly higher than those of children at baseline and the first month, but not obvious at the third month. PLI and SBI were increased from baseline to the first and to the third month both in adults and children groups. Besides, PD were increased from baseline to first month, followed by a downward trend in the third month; however, all patients were failed to detect with AL.Periodontal and microbiological statuses of malocclusion patients may be influenced by fixed orthodontic appliances in both adults and children, more significant in children than in adults. Some microbiological indexes have synchronous trend with the clinical indexes. Long-term efficacy of fixed orthodontic appliances for malocclusion should be confirmed by future researches.
PubMed | Shaanxi Traditional Chinese Medicine Hospital, Ninth Hospital of Xian and Hospital of Xinjiang Production and Construction Corps
Type: | Journal: Biomolecules & therapeutics | Year: 2016
Fucoidan has been reported to exhibit various beneficial activities ranging from to antivirus and anticancer properties. However, little information is available about the effects of fucoidan on cerebral ischemia-reperfusion injury (IRI). Our study aimed to explore the effects of fucoidan on cerebral IRI, as well as the underlying mechanisms. Sprague-Dawley (SD) rats were randomly subjected to four groups: Sham, IRI+saline (IRI+S), IRI+80 mg/kg fucoidan (IRI+F80), and IRI+160 mg/kg fucoidan (IRI+F160). Fucoidan (80 mg/kg or 160 mg/kg) was intraperitoneally injected from 7 days before the rats were induced to cerebral IRI model with middle cerebral artery occlusion (MCAO) method. At 24 h after reperfusion, neurological deficits and the total infarct volume were determined. The levels of inflammation-associated cytokines (interleukin (IL)-1, IL-6, myeloperoxidase (MPO), and tumor necrosis factor (TNF)-), oxidative stress-related proteins (malondialdehyde (MDA) and superoxide dismutase (SOD)) in the ischemic brain were measured by enzyme-linked immunosorbent assay (ELISA). Besides, the levels of apoptosis-related proteins (p-53, Bax, and B-cell lymphoma (Bcl)-2) and mitogen-activated protein kinase (MAPK) pathway (phosphorylation-extracellular signalregulated kinase (p-ERK), p-c-Jun N-terminal kinase (JNK), and p-p38) were measured. Results showed that administration of fucoidan significantly reduced the neurological deficits and infarct volume compared to the IRI+S group in a dose-dependent manner. Also, fucoidan statistically decreased the levels of inflammation-associated cytokines, and oxidative stress-related proteins, inhibited apoptosis, and suppressed the MAPK pathway. So, Fucoidan plays a protective role in cerebral IRI might be by inhibition of MAPK pathway.
PubMed | Washington University in St. Louis, Xi'an Jiaotong University and Ninth Hospital of Xian
Type: | Journal: Scientific reports | Year: 2016
The SNP of rs964184 in ZPR1 has recently been associated with type 2 diabetes mellitus (T2DM) in Japanese individuals. To comprehensively investigate the association of common variants in ZPR1 with T2DM in Han Chinese individuals, we designed a two-stage case-control study of 3,505 T2DM patients and 6,911 unrelated healthy Han Chinese individuals. A total of 24 single nucleotide polymorphisms (SNPs) were genotyped, and single-SNP association, imputation and gender-specific association analyses were performed. To increase the coverage of genetic markers, we implemented imputation techniques to extend the number of tested makers to 280. A novel SNP, rs2075290, and the previously reported SNP, rs964184, were significantly associated with T2DM in the two independent datasets, and individuals harboring the CC genotype of rs2075290 and GG genotype of rs964184 exhibited higher levels of fasting plasma glucose (FPG) and blood hemoglobin A1c (HbA1c) than individuals of other genotypes. Additionally, haplotype analyses indicated that two haplotype blocks containing rs2075290 or rs964184 were also significantly associated with T2DM. In summary, these results suggest that ZPR1 plays an important role in the etiology of T2DM, and this gene might be involved in abnormal glucose metabolism.
PubMed | Xi'an Jiaotong University and Ninth Hospital of Xian
Type: | Journal: Neuroscience letters | Year: 2016
Accumulating evidence demonstrates that acupuncture and electroacupuncture (EA) can exert a neuroprotective role for cerebral ischemia, but their precise mechanism remains largely unknown. Therefore, in this study, the effects of EA stimulation on cerebral ischemia reperfusion and its neuroprotective mechanisms were investigated. A rat model of middle cerebral artery occlusion (MCAO) was developed, and EA stimulation (2Hz, 1mA) at Baihui and Siguan acupoints was applied 30min after MCAO and then once daily for 7 consecutive days. The results indicated that EA stimulation significantly reduced the cerebral infarct area and neurological deficit scores, decreased the number of apoptotic cells, up-regulated Bcl-2 protein expression, and down-regulated Bax protein expression. EA stimulation resulted in a significant increase of proliferative cells in the cerebral tissues. Additionally, EA stimulation significantly down-regulated the expression levels of matrix metalloproteinase -9 (MMP-9) mRNA and protein, and simultaneously up-regulated the expression levels of tissue inhibitor of metalloproteinases-1 (TIMP-1) mRNA and protein, which resulted in an imbalance of MMP-9/TIMP-1expression, although it did not significantly change MMP-2 and TIMP-2 expression. These findings indicate that EA stimulation at Baihui and Siguan acupoints exerts a neuroprotective role against cerebral ischemia-reperfusion injury, which is probably associated with the inhibition of apoptosis and altering the balance of MMP-9/TIMP-1 expression.
Bi L.,PLA Fourth Military Medical University |
Li D.-C.,Ninth Hospital of Xian |
Huang Z.-S.,323 Hospital of PLA |
Yuan Z.,PLA Fourth Military Medical University
Artificial Organs | Year: 2013
Processed xenegeneic cancellous bone represents an alternative to bone autograft. In order to observe the effects of present prion inactivation treatments on the natural properties of xenogeneic cancellous bones, we treated bovine bone granules with sodium hydroxide (NaOH), sodium hypochlorite (NaOCl), and gaseous hydrogen peroxide (gH2O2) respectively in this study. The microstructure, composition, and mineral content of the granules were evaluated by scanning electron micrograph, energy dispersive X-ray spectroscopy, ash analysis, and micro-computed tomography. The biomechanical property was analyzed by a materials testing machine. The cytocompatibility was evaluated by using a mouse fibroblast cell line (3T3). The microstructure, organic content, and mechanical strength were dramatically altered at the surface of bone in both NaOH- and NaOCl-treated groups, but not in the gH2O2-treated group. Compared with the gH2O2-treated group, attachment and proliferation of 3T3 were reduced in either NaOH- or NaOCl-treated groups. As the consequence, gH2O2 treatment may be a useful approach of disinfection for the preparation of natural cancellous bone with well-preserved structural, mechanical, and biological properties. © 2013, International Center for Artificial Organs and Transplantation and Wiley Periodicals, Inc.
Chi L.,451St Hospital of Peoples Liberation Army |
Peng L.,451St Hospital of Peoples Liberation Army |
Hu X.,Ninth Hospital of xiAn |
Pan N.,451St Hospital of Peoples Liberation Army |
Zhang Y.,451St Hospital of Peoples Liberation Army
International Journal of Molecular Medicine | Year: 2014
Studies have shown that the oxidative modification of low-density lipoprotein (oxLDL) plays a major role in atherogenesis. Lectin-like oxidized low-density lipoprotein receptor-1 (LOX-1) mediated the transport of oxLDL into macrophages, which promoted foam cell formation. Targeting LOX-1 may therefore be a promising approach to inhibit atherosclerosis. In the present study, we aimed to investigate the effect of berberine combined with atorvastatin on LOX-1 and explore the underlying molecular mechanism involved. Expression of LOX-1 in monocyte-derived macrophages (MDMs) exposed to berberine (0, 0.1, 1, 10 and 100 nM) and atorvastatin (100 nM) were analyzed by quantitative reverse transcription polymerase chain reaction (qRT-PCR) and western blot analysis. Results showed that the expression of LOX-1 was decreased in a dose-dependent manner. Additionally, knockdown of the endothelin-1 (ET-1) receptor significantly blocked the inhibitory effect of berberine on LOX-1 expression. Body weight (BW), liver weight (LW) and kidney weight (KW) in the model rats were markedly increased at concentrations of berberine ≥1 μmol/kg, while heart weight (HW) and spleen weight (SW) remained constant among all groups. Berberine combined with atorvastatin also decreased serum total cholesterol (TC), triglyceride (TG) and low-density lipoprotein-cholesterol (LDL-C) levels in the rat model as well as inflammation and oxidative stress. Furthermore, plasma ET-1 levels and LOX-1 expression were decreased by berberine combined with atorvastatin treatment, and the inhibitory effect on LOX-1 was impeded by an ET-1 receptor antagonist. The results demonstrated that berberine combined with atorvastatin downregulates LOX-1 expression through ET-1 receptors in monocyte/macrophages in vitro and in vivo.
Chi L.,451st Hospital of Peoples Liberation Army |
Peng L.,451st Hospital of Peoples Liberation Army |
Pan N.,451st Hospital of Peoples Liberation Army |
Hu X.,Ninth Hospital of xian |
Zhang Y.,451st Hospital of Peoples Liberation Army
International Journal of Molecular Medicine | Year: 2014
Berberine (BBR) is a botanical alkaloid that has been reported to have effects in cardiovascular diseases; however, the mechanisms involved are not yet fully understood. In the present study, the protective effects of BBR were evaluated, and the underlying molecular mechanisms were investigated. The effects of a combination of atorvastatin and BBR on foam cell formation were also investigated. THP-1-derived macrophages were pre-treated with BBR (5, 10 and 20 mg/l) for 2 h prior to the addition of oxidized low density lipoprotein (ox-LDL; 50 mg/l). Small interfering RNA (siRNA) targeting sirtuin 1 (SIRT1) and the adenosine 5′-monophosphate-activated protein kinase (AMPK) inhibitor, compound C, were used to investigate the mechanisms through which BBR exerts its effects. To determine the effect of a combination of atorvastatin and BBR, the macrophages were treated with atorvastatin and BBR separately or jointly for 2 h, and then treated with ox-LDL (50 mg/l) or lipopolysaccharide (LPS; 10 μM) for 12 h. Oil Red O staining was used to detect foam cell formation. Lipid amounts were assessed by high-performance liquid chromatography (HPLC). Gene and protein expression was evaluated by RT-qPCR, western blot analysis and enzyme-linked immunosorbent assay (ELISA) carried out separately or jointly. The results from Oil Red O staining and HPLC revealed that BBR effectively suppressed foam cell formation and lipid and cholesterol accumulation. Furthermore, BBR upregulated the expression of SIRT1 and AMPK and downregulated the expression of peroxisome proliferator-activated receptor-γ (PPAR-γ). Pre-treatment of the cells with SIRT1-siRNA or compound C attenuated the anti-atherosclerotic effects of BBR. The results obtained in the present study demonstrate that the combination of atorvastatin and BBR is more effective in inhibiting foam cell formation than using atorvastatin alone. These data suggest that BBR suppresses foam cell formation by activating the AMPK-SIRT1-PPAR-γ pathway and diminishing the uptake of ox-LDL. Combination therapy with BBR and atorvastatin was more effective in preventing atherosclerotic processes than atorvastatin alone.
Du J.-H.,Ninth Hospital of Xian
Zhonghua Shiyan Yanke Zazhi/Chinese Journal of Experimental Ophthalmology | Year: 2013
Choroidal neovascularization (CNV) is the leading cause of vision disorder caused by various retinal diseases. At present, many therapeutic methods are employed clinically, such as photodynamic therapy (PDT), anti-vascular endothelial growth factor (anti-VEGF) and transpupillary thermotherapy (TTT). However, none of them can cure CNV thoroughly and repeated treatment is required usually. The reason for recurrent CNV is still unclear. Choroidal hypoperfusion associated with PDT may be one of the reasons. The purpose of this review is to discuss the problem of choroidal hypoperfusion associated with PDT for CNV as well as its impact on the eye and possible solutions. This paper presents evidences of choroidal hypoperfusion after PDT and its relationship with clinical outcomes. Meanwhile, the effect of combination therapy is assessed. Finally, low-fluence PDT is recommended as a potential method to reduce choroidal hypoperfusion. Copyright © 2013 by the Chinese Medical Association.
Zhang Y.-X.,Xinjiang Medical University |
Zhao Y.-L.,Ninth Hospital of xiAn
Computational and Mathematical Methods in Medicine | Year: 2016
Purpose. The objective of our study was to predicate candidate genes in cervical cancer (CC) using a network-based strategy and to understand the pathogenic process of CC. Methods. A pathogenic network of CC was extracted based on known pathogenic genes (seed genes) and differentially expressed genes (DEGs) between CC and normal controls. Subsequently, cluster analysis was performed to identify the subnetworks in the pathogenic network using ClusterONE. Each gene in the pathogenic network was assigned a weight value, and then candidate genes were obtained based on the weight distribution. Eventually, pathway enrichment analysis for candidate genes was performed. Results. In this work, a total of 330 DEGs were identified between CC and normal controls. From the pathogenic network, 2 intensely connected clusters were extracted, and a total of 52 candidate genes were detected under the weight values greater than 0.10. Among these candidate genes, VIM had the highest weight value. Moreover, candidate genes MMP1, CDC45, and CAT were, respectively, enriched in pathway in cancer, cell cycle, and methane metabolism. Conclusion. Candidate pathogenic genes including MMP1, CDC45, CAT, and VIM might be involved in the pathogenesis of CC. We believe that our results can provide theoretical guidelines for future clinical application. © 2016 Yun-Xia Zhang and Yan-Li Zhao.
PubMed | Ninth Hospital of Xian and Xinjiang Medical University
Type: | Journal: Computational and mathematical methods in medicine | Year: 2016
The objective of our study was to predicate candidate genes in cervical cancer (CC) using a network-based strategy and to understand the pathogenic process of CC.A pathogenic network of CC was extracted based on known pathogenic genes (seed genes) and differentially expressed genes (DEGs) between CC and normal controls. Subsequently, cluster analysis was performed to identify the subnetworks in the pathogenic network using ClusterONE. Each gene in the pathogenic network was assigned a weight value, and then candidate genes were obtained based on the weight distribution. Eventually, pathway enrichment analysis for candidate genes was performed.In this work, a total of 330 DEGs were identified between CC and normal controls. From the pathogenic network, 2 intensely connected clusters were extracted, and a total of 52 candidate genes were detected under the weight values greater than 0.10. Among these candidate genes, VIM had the highest weight value. Moreover, candidate genes MMP1, CDC45, and CAT were, respectively, enriched in pathway in cancer, cell cycle, and methane metabolism.Candidate pathogenic genes including MMP1, CDC45, CAT, and VIM might be involved in the pathogenesis of CC. We believe that our results can provide theoretical guidelines for future clinical application.