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Lin Z, Hegarty JP, Cappel JA, Yu W, Chen X, Faber P, Wang Y, Kelly AA, Poritz LS, Peterson BZ, Schreiber S, Fan JB, Koltun WA. Identification of disease-associated DNA methylation in intestinal tissues from patients with inflammatory bowel disease. Clin Genet 2010; 80:59-67. [PMID: 20950376 DOI: 10.1111/j.1399-0004.2010.01546.x] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Overwhelming evidence supports the theory that inflammatory bowel disease (IBD) is caused by a complex interplay between genetic predispositions of multiple genes, combined with an abnormal interaction with environmental factors. It is becoming apparent that epigenetic factors can have a significant contribution in the pathogenesis of disease. Changes in the methylation state of IBD-associated genes could significantly alter levels of gene expression, potentially contributing to disease onset and progression. We have explored the role of DNA methylation in IBD pathogenesis. DNA methylation profiles (1505 CpG sites of 807 genes) of matched diseased (n = 26) and non-diseased (n = 26) intestinal tissues from 26 patients with IBD [Crohn's disease (CD) n = 9, ulcerative colitis (UC) n = 17] were profiled using the GoldenGate™ methylation assay. After an initial identification of a panel of 50 differentially methylated CpG sites from a training set (14 non-diseased and 14 diseased tissues) and subsequent validation with a testing set (12 non-diseased and 12 diseased tissues), we identified seven CpG sites that are differentially methylated in intestinal tissues of IBD patients. We have also identified changes in DNA methylation associated with the two major IBD subtypes, CD and UC. This study reports IBD-associated changes in DNA methylation in intestinal tissue, which may be disease subtype-specific.
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6152
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Wang Y, Liu YF, Cheng Y, Yi DH, Li P, Song WQ, Fu DZ, Wang X. Prognosis of colorectal cancer with liver metastasis: value of a prognostic index. Braz J Med Biol Res 2010; 43:1116-22. [PMID: 20945037 DOI: 10.1590/s0100-879x2010007500103] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2010] [Accepted: 09/16/2010] [Indexed: 01/03/2023] Open
Abstract
The objective of the present study was to explore the factors related to the prognosis of colorectal cancer (CRC) and to establish a prognostic model for the selection of patients who might benefit from hepatic resection for metastatic CRC. A total of 293 patients undergoing liver resection for metastatic CRC (172 males and 80 females ranging in age from 26 to 80 years) were selected and clinical, pathological and outcome data were examined in this retrospective study. The prognostic index (PI) of the patients was calculated on the basis of results of multivariate analysis. Patients were stratified into different groups, with survival curves projected according to PI. The 1-, 3-, and 5-year overall survival rates were 58.3, 26.4, and 11.3%, respectively. Univariate analysis indicated that degree of primary tumor differentiation, resection margin, preoperative carcinoembryonic antigen (CEA) level, number of liver metastases, and resection of liver metastases were associated with prognosis (P < 0.05). In multivariate analysis, the last three factors were found to be independent prognostic factors. The resection of liver metastases was a favorable factor. Patients were classified into three groups according to PI, which differed significantly in survival rate (P < 0.05). The individual survival rate was evaluated based on PI. Resection of hepatic colorectal metastases may produce long-term survival and cure. The proposed PI was easy to use, was highly predictive of patient outcome, and permitted categorization of patients into treatment groups.
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6153
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Jaworski DC, Zou Z, Bowen CJ, Wasala NB, Madden R, Wang Y, Kocan KM, Jiang H, Dillwith JW. Pyrosequencing and characterization of immune response genes from the American dog tick, Dermacentor variabilis (L.). INSECT MOLECULAR BIOLOGY 2010; 19:617-30. [PMID: 20698900 PMCID: PMC9327058 DOI: 10.1111/j.1365-2583.2010.01037.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Ticks continue to be a threat to animal and human health, and new and novel control strategies are needed for ticks and tick-borne pathogens. The characterization of the tick-pathogen interface and the tick immune response to microbial infections is fundamental toward the formulation of new control strategies for ticks and the pathogens they transmit. Our overall hypothesis for this research is that the tick immune system manages the maintenance of pathogens. Therefore, discovery of tick immune response genes may provide targets for novel control strategies directed toward reducing vector competency and pathogen transmission. In these studies, 454 pyrosequencing, a high-throughput genomic sequencing method was used to discover tick genes expressed in response to bacterial and fungal infections. Expressed sequence tags (ESTs) were analysed from Dermacentor variabilis ticks that had been injected with bacteria (Escherichia coli, Bacillus subtilis, Micrococcus luteus) or fungi (Saccharomyces cerevisiae and Candida albicans) and ticks that were naturally infected with the intracellular bacterium, Anaplasma marginale. By this approach, ESTs were assembled into 5995 contigs. Contigs fell into the five main functional categories of metabolism, genetic information processing, environmental information processing, cellular processes and human diseases. We identified more than 30 genes that are likely to encode for proteins involved in tick immune function. We further analysed by reverse transcriptase PCR (RT-PCR) the expression of 22 of these genes in each of our bacterial or fungal treatment groups and found that seven were up-regulated. Up-regulation of these seven genes was confirmed for bacterial, but not fungal treatment by quantitative PCR (qPCR). One of these products was novel, encoding a new tick defensin. Our results clearly demonstrate the complexities of the tick immune system and mark new directions for further study and characterization of proteins that modulate microbial infections in the American dog tick.
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6154
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Wang Y, Asaka T, Watanabe K. P13-3 Multi-muscle synergies for force control while making a first step. Clin Neurophysiol 2010. [DOI: 10.1016/s1388-2457(10)60734-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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6155
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Wang Y, Dirat B, Bochet L, Dabek M, Dauvillier S, Valet P, Muller C. R55: L’hypoxie du tissu adipeux stimule les capacités migratoires et invasives des cellules de cancer de la prostate : un nouveau lien entre obésité et cancer. Bull Cancer 2010. [DOI: 10.1016/s0007-4551(15)30972-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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6156
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Dirat B, Attané C, Dabek M, Wang Y, Bochet L, Dauvillier S, Valet P, Muller C. R11: Un nouveau dialogue métabolique entre microenvironnement et cancer : rôle des adipocytes péritumoraux. Bull Cancer 2010. [DOI: 10.1016/s0007-4551(15)30928-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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6157
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Cai HY, Wang Y, Li L, Zhao L, Yang XY, Xiao JM, Cao JM, Yang XY, Yang CH, Guo T. e0388 Effect of endothelial progenitor cells from peripheral blood in patients with coronary heart disease before and after extracorporeal cardiac shock wave therapy. BRITISH HEART JOURNAL 2010. [DOI: 10.1136/hrt.2010.208967.388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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6158
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Liang D, Li W, Li S, Zhang R, Gao L, Zhu S, Wang Y, Wang H, Cao F. e0082 Molecular imaging of apelin on survival and function of mesenchymal stem cells in hindlimb mice. BRITISH HEART JOURNAL 2010. [DOI: 10.1136/hrt.2010.208967.82] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Wang Y, Wang Y. e0130 Tetrandrine control pro-inflammatory factor to reduce rat myocardial ischaemic/reperfusion injury. BRITISH HEART JOURNAL 2010. [DOI: 10.1136/hrt.2010.208967.130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Zhang J, Fu X, Wang Q, Fan X, Wang Y, Wang X. e0575 B-type natriuretic peptide on coronary circulation in York pigs model of acute myocardial infarction with heart failure. BRITISH HEART JOURNAL 2010. [DOI: 10.1136/hrt.2010.208967.575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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6161
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Wang Y. S11-5 rTMS application in epilepsy. Clin Neurophysiol 2010. [DOI: 10.1016/s1388-2457(10)60090-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Wang Y, Zhu J, Tan H, Zhang Y. e0620 APACHE-II scoring system is used in critically ill patients with cardiovascular disease. BRITISH HEART JOURNAL 2010. [DOI: 10.1136/hrt.2010.208967.620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Wang Y, Wang Y. e0129 Effect of tetrandrine on anoxia/reoxygenation-induced release of proinflammatory factors in cultured cardiocyte of neonate rats. BRITISH HEART JOURNAL 2010. [DOI: 10.1136/hrt.2010.208967.129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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6164
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Wang Y, Yao H, Cui C, Wauthier E, Barbier C, Costello MJ, Moss N, Yamauchi M, Sricholpech M, Gerber D, Loboa EG, Reid LM. Paracrine signals from mesenchymal cell populations govern the expansion and differentiation of human hepatic stem cells to adult liver fates. Hepatology 2010; 52:1443-54. [PMID: 20721882 PMCID: PMC2947554 DOI: 10.1002/hep.23829] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
UNLABELLED The differentiation of embryonic or determined stem cell populations into adult liver fates under known conditions yields cells with some adult-specific genes but not others, aberrant regulation of one or more genes, and variations in the results from experiment to experiment. We tested the hypothesis that sets of signals produced by freshly isolated, lineage-dependent mesenchymal cell populations would yield greater efficiency and reproducibility in driving the differentiation of human hepatic stem cells (hHpSCs) into adult liver fates. The subpopulations of liver-derived mesenchymal cells, purified by immunoselection technologies, included (1) angioblasts, (2) mature endothelia, (3) hepatic stellate cell precursors, (4) mature stellate cells (pericytes), and (5) myofibroblasts. Freshly immunoselected cells of each of these subpopulations were established in primary cultures under wholly defined (serum-free) conditions that we developed for short-term cultures and were used as feeders with hHpSCs. Feeders of angioblasts yielded self-replication, stellate cell precursors caused lineage restriction to hepatoblasts, mature endothelia produced differentiation into hepatocytes, and mature stellate cells and/or myofibroblasts resulted in differentiation into cholangiocytes. Paracrine signals produced by the different feeders were identified by biochemical, immunohistochemical, and quantitative reverse-transcription polymerase chain reaction analyses, and then those signals were used to replace the feeders in monolayer and three-dimensional cultures to elicit the desired biological responses from hHpSCs. The defined paracrine signals were proved to be able to yield reproducible responses from hHpSCs and to permit differentiation into fully mature and functional parenchymal cells. CONCLUSION Paracrine signals from defined mesenchymal cell populations are important for the regulation of stem cell populations into specific adult fates; this finding is important for basic and clinical research as well as industrial investigations.
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James J, Kinnett K, Wang Y, Ittenbach R, Cripe L. P4.09 Electrocardiographic abnormalities in Duchenne muscular dystrophy prior to the onset of cardiac dysfunction. Neuromuscul Disord 2010. [DOI: 10.1016/j.nmd.2010.07.205] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Liu M, Cui L, Ding Z, Wang Y, Guan Y, Chen L. P34-14 The utility of clinical exercise test in diagnosis of hypokalaemic periodic paralysis. Clin Neurophysiol 2010. [DOI: 10.1016/s1388-2457(10)61258-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Lian Y, Wang Y, Li H, Wu Y. e0615 The relationship between left ventricular diastolic function and arterial stiffness in coronary heart disease patients with diabetes. BRITISH HEART JOURNAL 2010. [DOI: 10.1136/hrt.2010.208967.615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Wang Y, Guo T, Yang C, Gu Y, Tao S, Pu S. e0369 Extracorporeal cardiac shock wave therapy promotes angiogenesis after acute myocardial infarction in pigs evaluated by realtime myocardial contrast echocardiography. BRITISH HEART JOURNAL 2010. [DOI: 10.1136/hrt.2010.208967.369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Wang Y, Zhang B, Bai Y. e0308 Proteomic features induced by insulin on vascular smooth muscle cells from spontaneous hypertensive rats in vitro. BRITISH HEART JOURNAL 2010. [DOI: 10.1136/hrt.2010.208967.308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Guan Y, Ren K, Zhang D, Shan Z, Wang Y, Li Y, Guo H, Zhang Y. e0007 The effect of omeprazole on the oxidative stress and acute atrial electrical remodelling in rabbits. BRITISH HEART JOURNAL 2010. [DOI: 10.1136/hrt.2010.208967.7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Qiu J, Gao H, Zhao S, Wang Y, Ji X, You B, Liu X. e0708 IGFBP-7 contributes to vascular remolding during hypertension development in ouabain-induced hypertensive rats. BRITISH HEART JOURNAL 2010. [DOI: 10.1136/hrt.2010.208967.708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Zhang J, Fu X, Wang Q, Fan X, Wang Y, Wang X. e0539 B-type natriuretic peptide on preventing of contrast-induced nephropathy in patients with heart failure undergoing primary percutaneous coronary intervention. BRITISH HEART JOURNAL 2010. [DOI: 10.1136/hrt.2010.208967.539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Zhang J, Fu X, Wang Q, Fan X, Wang X, Wang Y. e0161 Establishment of minipig model of ischaemic heart failure with acute myocardial infarction by coronary occlusion with balloon occluding and intermixture injecting of microthrombi and plastic microspheres. BRITISH HEART JOURNAL 2010. [DOI: 10.1136/hrt.2010.208967.161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Tao S, Guo T, Wang Y, Cai H, Yang C. e0017 Effects of extracorporeal cardiac shock wave therapy on angiogenesis and expression of VEGF in acute myocardial infraction pigs. BRITISH HEART JOURNAL 2010. [DOI: 10.1136/hrt.2010.208967.17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Broderick TL, Wang Y, Gutkowska J, Wang D, Jankowski M. Downregulation of oxytocin receptors in right ventricle of rats with monocrotaline-induced pulmonary hypertension. Acta Physiol (Oxf) 2010; 200:147-58. [PMID: 20377540 DOI: 10.1111/j.1748-1716.2010.02134.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
AIM pulmonary hypertension (PH) in the rat leads to right ventricular (RV) hypertrophy, inflammation and increased natriuretic peptide (NP) levels in plasma and RV. Because the release of nitric oxide (NO) and atrial natriuretic peptide (ANP) is a function of the oxytocin receptor (OTR), we examined the effect of PH on gene and protein expression of OTR, NP (A, atrial; B, brain) and receptors (NPRs), nitric oxide synthases (NOS), interleukin (IL)-1β, IL-6 and tumour necrosis factor-α in the hypertrophied RV in a model of PH. METHODS RV hypertrophy was induced in male Sprague-Dawley rats with monocrotaline (MCT; 60 mg kg(-1) ) and was confirmed by the presence of an increased RV weight and RV-to-[left ventricle (LV) and septum] ratio. RESULTS in the RV of MCT-treated rats, a approximately 40% reduction in OTR mRNA and protein was observed compared with the RV of control rats. This reduction was associated with increased transcripts of ANP and BNP in both ventricles and a corresponding increase in NP receptor mRNA expression for receptors A, B and C. Protein expression of inducible NOS was increased in the RV, whereas endothelial NOS transcripts were increased only in the LV of MCT-treated rats. In the RV of MCT-treated rats, downregulation of OTR was also associated with increased mRNA expression of IL-1β and IL-6. CONCLUSION our results show that downregulation of the OTR in the RV of MCT-treated rats is associated with increased expression of NP and their receptors as well as IL-1β and IL-6. This reduction in OTR in RV myocardium may have an impact on cardiac function in the MCT-induced model of PH.
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