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Wu M, Zhang Y, Tang A, Tian L. miR-506 inhibits cell proliferation and invasion by targeting TET family in colorectal cancer. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2016; 19:316-22. [PMID: 27114802 PMCID: PMC4834122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVES Ten-eleven translocation (TET) family members have been shown to be involved in the development of many tumors. However, the biological role of the TET family and its mechanism of action in colorectal carcinogenesis and progression remain poorly understood. MATERIALS AND METHODS We measured the expression levels of TET family members in colorectal cancer (CRC) specimens, in the corresponding normal tissues and in cell lines using quantitative real-time PCR (qRT-PCR) and in situ hybridization (ISH). Both the protein function and the protein-independent role of TETs were investigated by cell viability assays and cell invasion assays using in vitro and in vivo models. RESULTS We found that all three TET genes were strongly up-regulated at the transcript level in CRC samples compared to matched normal tissues. The same results were observed in colorectal cancer cell lines. Knockdown of TETs by shTET1/2/3 showed that TET family members inhibited CRC growth and metastasis. We showed that TET family member degradation by miR-506 inhibits cell proliferation and invasion in colorectal cancer. CONCLUSION Through this study, we advance our understanding of the expression levels TETs and miR-506 in CRC and further clarify the internal regulatory mechanism of miR-506 by targeting TET during CRC processes. These findings may contribute to a novel avenue for researching and developing targeted therapies for CRC.
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Ai F, Zhang X, Li X, Qin Z, Ye Q, Tian L, Tang A, Li N, Li G, Ma J, Shen S. Up-regulation of matrix metalloproteinases in a mouse model of chemically induced colitis-associated cancer: the role of microRNAs. Oncotarget 2016; 6:5412-25. [PMID: 25742789 PMCID: PMC4467157 DOI: 10.18632/oncotarget.3027] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Accepted: 01/01/2015] [Indexed: 01/08/2023] Open
Abstract
Emerging evidence has implicated microRNAs in regulating the production of multiple inflammatory mediators including cytokines and chemokines. We previously elucidated the dynamic activation of key signals that link colitis to colorectal cancer. In this study, we observed a sharp increase in the levels of matrix metalloproteinases (Mmps) that provided a basis for the inflammation-cancer link, and we questioned whether this was a consequence of the dysregulation of Mmp-specific microRNAs, at least partly. We assayed a panel of murine microRNAs that were predicted to target Mmps and found they were downregulated in the inflammation-cancer link. Furthermore, we demonstrated that three murine microRNAs, namely miR-128, -134, and -330, can target the three Mmps Mmp3, Mmp10, and Mmp13, respectively. We also found that the level of the microRNA-processing enzyme Dicer1 was decreased in the inflammation-cancer link. These microRNAs functioned as tumor suppressors in colon cancer cells, attenuating the proliferation, migration, and invasion potential of murine colon cancer cells as well as angiogenesis and the growth of tumors derived from these cells. Our results suggest that microRNAs modulate the production of key inflammatory mediators and that microRNA dysfunction may contribute to the non-resolving inflammation associated with cancer.
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Rahman NM, Pepperell J, Rehal S, Saba T, Tang A, Ali N, West A, Hettiarachchi G, Mukherjee D, Samuel J, Bentley A, Dowson L, Miles J, Ryan F, Yoneda K, Chauhan A, Corcoran J, Psallidas I, Wrightson JM, Hallifax R, Davies HE, Lee YCG, Hedley EL, Seaton D, Russell N, Chapman M, McFadyen BM, Shaw RA, Davies RJO, Maskell NA, Nunn AJ, Miller RF. S20 Primary Result of the 1st Therapeutic Interventions in Malignant Effusion (TIME1) Trial: A 2 × 2 factorial, randomised trial of chest tube size and analgesic strategy for pleurodesis in malignant pleural effusion. Thorax 2015. [DOI: 10.1136/thoraxjnl-2015-207770.26] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Chen Z, Liu S, Tian L, Wu M, Ai F, Tang W, Zhao L, Ding J, Zhang L, Tang A. miR-124 and miR-506 inhibit colorectal cancer progression by targeting DNMT3B and DNMT1. Oncotarget 2015; 6:38139-50. [PMID: 26497367 PMCID: PMC4741989 DOI: 10.18632/oncotarget.5709] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Accepted: 10/05/2015] [Indexed: 12/31/2022] Open
Abstract
miR-124 and miR-506 are reportedly down-regulated and associated with tumor progression in many cancers, but little is known about their intrinsic regulatory mechanisms in colorectal cancer (CRC). In this study, we found that the miR-124 and miR-506 levels were significantly lower in human CRC tissues than in controls, as indicated by qRT-PCR and in situ hybridization histochemistry. We also found that the overexpression of miR-124 or miR-506 inhibited tumor cell progression and increased sensitivity to chemotherapy in vitro. Increased miR-124 or miR-506 expression also inhibited tumor cell proliferation and invasion in vivo. Luciferase reporter assays and western blotting were used to determine the association between miR-124, miR-506 and their target genes, DNMTs. We further identified that miR-124 and miR-506 directly targeted DNMT3B and indirectly targeted DNMT1. The overexpression of miR-124 and miR-506 reduced global DNA methylation and restored the expression of E-cadherin, MGMT and P16. In conclusion, our data showed that miR-124 and miR-506 inhibit progression and increase sensitivity to chemotherapy by targeting DNMT3B and DNMT1 in CRC. These findings may provide novel avenues for the development of targeted therapies.
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Morellini N, Grehl S, Tang A, Rodger J, Mariani J, Lohof AM, Sherrard RM. What does low-intensity rTMS do to the cerebellum? THE CEREBELLUM 2015; 14:23-6. [PMID: 25346177 DOI: 10.1007/s12311-014-0617-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Non-invasive stimulation of the human cerebellum, such as by transcranial magnetic stimulation (TMS), is increasingly used to investigate cerebellar function and identify potential treatment for cerebellar dysfunction. However, the effects of TMS on cerebellar neurons remain poorly defined. We applied low-intensity repetitive TMS (LI-rTMS) to the mouse cerebellum in vivo and in vitro and examined the cellular and molecular sequelae. In normal C57/Bl6 mice, 4 weeks of LI-rTMS using a complex biomimetic high-frequency stimulation (BHFS) alters Purkinje cell (PC) dendritic and spine morphology; the effects persist 4 weeks after the end of stimulation. We then evaluated whether LI-rTMS could induce climbing fibre (CF) reinnervation to denervated PCs. After unilateral pedunculotomy in adult mice and 2 weeks sham or BHFS stimulation, VGLUT2 immunohistochemistry was used to quantify CF reinnervation. In contrast to sham, LI-rTMS induced CF reinnervation to the denervated hemicerebellum. To examine potential mechanisms underlying the LI-rTMS effect, we verified that BHFS could induce CF reinnervation using our in vitro olivocerebellar explants in which denervated cerebellar tissue is co-cultured adjacent to intact cerebella and treated with brain-derived neurotrophic factor (BDNF) (as a positive control), sham or LI-rTMS for 2 weeks. Compared with sham, BDNF and BHFS LI-rTMS significantly increased CF reinnervation, without additive effect. To identify potential underlying mechanisms, we examined intracellular calcium flux during the 10-min stimulation. Complex high-frequency stimulation increased intracellular calcium by release from intracellular stores. Thus, even at low intensity, rTMS modifies PC structure and induces CF reinnervation.
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Tang A, Essebag V, Leong-Sit P, Sterns L, Wilton S, Parkash R, Bennett M, Verma A, Macle L, Roux J, Healey J, Talajic M, Bernick J, Rouleau J, Wells G. HOW WELL ARE RATE OR RHYTHM CONTROL ACHIEVED IN RAFT-AF PATIENTS WITH ATRIAL FIBRILLATION AND HEART FAILURE? Can J Cardiol 2015. [DOI: 10.1016/j.cjca.2015.07.532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Zhang X, Ai F, Li X, She X, Li N, Tang A, Qin Z, Ye Q, Tian L, Li G, Shen S, Ma J. Inflammation-induced S100A8 activates Id3 and promotes colorectal tumorigenesis. Int J Cancer 2015; 137:2803-14. [PMID: 26135667 DOI: 10.1002/ijc.29671] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Accepted: 06/22/2015] [Indexed: 12/26/2022]
Abstract
The aberrant expression of S100A8 and S100A9 is linked to nonresolving inflammation and ultimately to carcinogenesis, whereas the underlying mechanism that allows inflammation to progress to specific cancer types remains unknown. Here, we report that S100A8 was induced by inflammation and then promoted colorectal tumorigenesis downstream by activating Id3 (inhibitor of differentiation 3). Using gene expression profiling and immunohistochemistry, we found that both S100A8 and S100A9 were upregulated in the chemically-induced colitis-associated cancer mouse model and in human colorectal cancer specimens. Furthermore, we showed that S100A8 and S100A9 acted as chemoattractant proteins by recruiting macrophages, promoting the proliferation and invasion of colon cancer cell, as well as spurring the cycle that culminates in the acceleration of cancer metastasis in a nude mouse model. S100A8 regulated colon cancer cell cycle and proliferation by inducing Id3 expression while inhibiting p21. Id3 expression was regulated by Smad5, which was directly phosphorylated by Akt1. Our study revealed a novel mechanism in which inflammation-induced S100A8 promoted colorectal tumorigenesis by acting upstream to activate the Akt1-Smad5-Id3 axis.
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Weiss MD, Tang A, Young L, Irwin L, Brophy C, Larsen V, Howard J, Miller C, Douglas-Escobar M. Transporting neonates with hypoxic-ischemic encephalopathy utilizing active hypothermia. J Neonatal Perinatal Med 2015; 7:173-8. [PMID: 25318630 DOI: 10.3233/npm-14814018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVE The objective of this report was to evaluate a servo-controlled active hypothermia device used during the transport of neonates with HIE. STUDY DESIGN Retrospective review of all cases of therapeutic hypothermia, both passive and active, using a servo-controlled device in a single regional referral neonatal intensive care unit from 2009-2013 RESULTS: An ambulance (43%), fixed wing aircraft (25%), or helicopter (32%) transported 28 neonates with active hypothermia. The servo-controlled device captured core temperatures in all 28 neonates, resulting in 2,985 minutes of data. All neonates attained a core temperature between 33-34 °C by 33 minutes of the transport. Once the neonates attained a core temperature, the average temperature for the remainder of the transport was 33 ± 0.2 °C. The neonates maintained the core temperature regardless of the type of transport vehicle. CONCLUSION Servo-controlled hypothermia enables rapid attainment of targeted temperatures and maintains the temperature throughout the transport process in both ground and air transport.
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Ngaage DL, Rogers S, Tang A, Sogliani F. On or off pump coronary bypass? Insight from matched and principal component analyses of 8779 operations. THE JOURNAL OF CARDIOVASCULAR SURGERY 2015; 56:447-454. [PMID: 24429806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
AIM The aim of this paper was to compare the clinical impact of the different myocardial protection strategies in coronary artery bypass grafting (CABG) patients to facilitate decision-making for use of on- or off-pump technique. METHODS Prospectively collected data for primary CABG patients between April 1, 1996 and December 30, 2010 (N.=8779) were analyzed. Early adverse cardiac and cerebrovascular events (ACCE) and late survival were compared between on-pump; cardioplegia (CPA, N.=3862, 44%), cross-clamp fibrillation (XCF, N.=3751, 43%), and off-pump (N.=1166, 13%) myocardial protection. Second, clinical profiling for the risk of ACCE with each strategy was performed using principal component analysis. Finally, a 1:1 matched cohort comparison of 1055 patients was done. RESULTS There were vast differences in baseline characteristics between groups. Significantly fewer grafts per patient were constructed using off-pump. There were no remarkable differences in operative mortality and 10-year survival rates between the groups after restrictive matching. Principal component analysis identified high risk profiles; factor 1 (ejection fraction 30-50%, prior myocardial infarction, non-elective operation), and factors 4 (hypertension, hypercholesterolemia, Body Mass Index >30 kg/m2) and 5 (female, octogenarian, left main stem disease) to be strongly associated with ACCE after on-pump CABG while lower risk profiles; factors 5 and 6 (extracardiac arteriopathy, prior stroke) were associated with ACCE after off-pump CABG. CONCLUSION Comparatively, on-pump techniques were associated with greater risk of adverse events in "high risk" patients defined by clinical characteristics, while off-pump was associated with increased risk of adverse events in "low risk" patients.
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Tang A, Samost A, Viswanathan A, Cormack R, Damato A. WE-G-BRA-07: Analyzing the Safety Implications of a Brachytherapy Process Improvement Project Utilizing a Novel System-Theory-Based Hazard-Analysis Technique. Med Phys 2015. [DOI: 10.1118/1.4926077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Tang A, Turvey S. 28 ER stress and TLR activation inter-regulate through p65, p38, STAT3, and XBP1s to modulate inflammation in cystic fibrosis. J Cyst Fibros 2015. [DOI: 10.1016/s1569-1993(15)30205-8] [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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Zhang L, Sun J, Liu Z, Dai Y, Luo Z, Jiang X, Li Z, Li Y, Cao P, Zhou Y, Zeng Z, Tang A, Li X, Li X, Xiang J, Li G. Mesenchymal stem cells regulate cytoskeletal dynamics and promote cancer cell invasion through low dose nitric oxide. Curr Mol Med 2015; 14:749-61. [PMID: 24894170 DOI: 10.2174/1566524014666140724102301] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Revised: 02/14/2014] [Accepted: 02/19/2014] [Indexed: 12/15/2022]
Abstract
Bone marrow-derived mesenchymal stem cells (BMSCs) can be recruited to tumor sites and integrate into the stroma of tumors. When co-cultured with BMSCs, otherwise weakly metastatic nasopharyngeal carcinoma cells (NPC) showed improved metastatic ability. BMSCs in the tumor environment displayed the characteristics of macrophages. Nitric oxide produced by BMSCs in tumor environment could translocate caldesmon to podosome in Ca2+/calmodulin manner and promoted metastatic ability of NPC cells through invadopodia formation, with which the NPC cells degrade the extracellular matrix. Thus, we concluded that the BMSCs promoted cell migration and invasion through nitric oxide-induced paracrine signals.
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Morellini N, Grehl S, Tang A, Lohof A, Rodger J, Sherrard R. Low intensity rTMS: effects on cerebellar neurons and circuits. Brain Stimul 2015. [DOI: 10.1016/j.brs.2015.01.133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Tang A, Goeree R, Blackhouse G, Tsoi B. COST UTILITY ANALYSIS OF BOTOX VS. ANTICHOLINERGIC MEDICATION FOR URINARY INCONTINENCE, DUE TO NEUROGENIC DETRUSOR OVERACTIVITY ASSOCIATED WITH SPINAL CORD INJURY OR MULTIPLE SCLEROSIS. Br J Soc Med 2015. [DOI: 10.1136/jech-2014-205217.13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Zhang E, Wartelle-Bladou C, Lepanto L, Lachaine J, Cloutier G, Tang A. Cost-Utility Analysis Of Screening Strategies For Nonalcoholic Steatohepatitis. VALUE IN HEALTH : THE JOURNAL OF THE INTERNATIONAL SOCIETY FOR PHARMACOECONOMICS AND OUTCOMES RESEARCH 2014; 17:A367. [PMID: 27200772 DOI: 10.1016/j.jval.2014.08.825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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Duan ZP, Zhou HY, Duan C, Wang Z, Chen Y, Zheng SJ, Liu S, Tang A, Li H. Survey of Treatment Costs to Hepatitis C in China. VALUE IN HEALTH : THE JOURNAL OF THE INTERNATIONAL SOCIETY FOR PHARMACOECONOMICS AND OUTCOMES RESEARCH 2014; 17:A805. [PMID: 27203036 DOI: 10.1016/j.jval.2014.08.515] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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Crawford B, Tang A, Li H, Burns L, Wada K, McDonald J. Real World Studies Using Japanese Administrative Databases: Chronic Hepatitis C Treatment Pattern And Resource Use. VALUE IN HEALTH : THE JOURNAL OF THE INTERNATIONAL SOCIETY FOR PHARMACOECONOMICS AND OUTCOMES RESEARCH 2014; 17:A370-A371. [PMID: 27200790 DOI: 10.1016/j.jval.2014.08.843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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Marzolini S, McIlroy W, Tang A, Corbett D, Craven BC, Oh PI, Brooks D. Predictors of low bone mineral density of the stroke-affected hip among ambulatory individuals with chronic stroke. Osteoporos Int 2014; 25:2631-8. [PMID: 25001986 DOI: 10.1007/s00198-014-2793-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2014] [Accepted: 06/24/2014] [Indexed: 10/25/2022]
Abstract
UNLABELLED Risk of hip fracture is greater poststroke than in an age-matched healthy population, in part because of declining hip BMD. We found that individuals may be at risk of loss of hip BMD from muscle atrophy, asymmetrical gait, and poor affected-side ankle dorsiflexor strength. These impairments may be targeted during rehabilitation. INTRODUCTION This study aimed to determine predictors of low hip BMD on the stroke-affected side in people living in the community. METHODS Forty-three participants (female; 27.9%), mean age 62.4 ± 13.5 and 17.9 ± 32.8 months, poststroke with motor impairments underwent dual energy X-ray absorptiometry scans. Gait characteristics, isometric strength, body composition, and fasting plasma lipids were measured. RESULTS At entry, 34.9% (15/43) of the participants had low total hip BMD on the stroke-affected side. Of those with low BMD, 93.3% (14/15) had a step length symmetry ratio >1, indicating greater reliance on the non-paretic leg for weight bearing. Logistic regression analysis revealed that lower affected-side ankle dorsiflexor strength (ß = 0.700, p = 0.02), lower total body fat-free mass index (ß = 0.437, p = 0.02), and greater step length symmetry ratio during walking (ß = 1.135 × 10(3), p = 0.03) were predictors of low hip BMD. CONCLUSION Low BMD of the stroke-affected side hip is prevalent in over a third of individuals with lower limb motor impairments. These individuals may be at particular risk of accelerated loss of BMD at the hip from asymmetrical gait pattern and poor affected-side ankle dorsiflexor strength. These impairments are intervention targets that may be addressed during rehabilitation which includes resistance training and addresses gait impairments.
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Liu S, Wang X, Xiao Z, Tang A, Tang W, Shen S. [Effect of Feridex-GFP double-labeled BMSC transplant on the damaged liver under the condition of constant magnetic field]. ZHONG NAN DA XUE XUE BAO. YI XUE BAN = JOURNAL OF CENTRAL SOUTH UNIVERSITY. MEDICAL SCIENCES 2014; 39:1008-15. [PMID: 25355253 DOI: 10.11817/j.issn.1672-7347.2014.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBJECTIVE To evaluate the effect of the bone marrow mesenchymal stem cells (BMSCs) transplant through peripheral vein, portal vein and hepatic artery into liver under the condition of constant magnetic field and to analyze the therapeutic effect on liver function recovery. METHODS BMSCs were isolated, purified and induced to differentiate into liver-like cells, which were double labeled by Feridex-GFP. The double-labeled BMSCs were transplanted into liver through different ways including peripheral vein, portal vein and hepatic artery with or without constant magnetic field in vitro. The rats were sacrificed at the 1st, 2nd, 3rd and 4th week after the transplant. ALB, ALT, AST were tested. The liver tissue biopsy was collected. GFP-positive cells in liver were observed by fluorescence microscopy. RESULTS Double-labeled BMSCs could be transplanted into liver through all ways. GFP expression was found in liver in all groups at the 4th week and the liver functions were improved. Based on the long term efficacy, the liver functions recovered more rapidly in the portal vein + constant magnetic field group and the hepatic artery + constant magnetic field group. CONCLUSION BMSCs transplantation can reduce acute liver damage. The first choice for BMSCs transplantation was via portal vein or hepatic artery under the condition of constant magnetic field. The second choice was via peripheral vein alone or under the condition of constant magnetic field.
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Krahn A, Jackson H, Macfarlane A, Wagner B, Tang A. A CANADIAN CARDIAC RATE BOOK: CARDIAC IMPLANTABLE ELECTRONIC DEVICE IMPLANTS (2006 to 2012). Can J Cardiol 2014. [DOI: 10.1016/j.cjca.2014.07.584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Tung S, Yee R, Deyell M, Rajagopalan K, Thompson C, Krahn A, Tang A, Moss R. SUPERIOR APPROACH IMPLANTATION OF ENDOCARDIAL LV LEAD IS EFFECTIVE IN PROVIDING CARDIAC RESYNCHRONIZATION THERAPY. Can J Cardiol 2014. [DOI: 10.1016/j.cjca.2014.07.602] [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] Open
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Leader N, Bennett M, Sapp J, Parkash R, Gardner M, Healey J, Thibault B, Sterns L, Basta M, Essebag V, Birnie D, Sivakumaran S, Nery P, Tang A. THE RESPONSE TO ANTITACHYCARDIA PACING DIFFERENTIATES VENTRICULAR FROM SUPRAVENTRICULAR TACHYCARDIA. Can J Cardiol 2014. [DOI: 10.1016/j.cjca.2014.07.581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Al-Badawi T, Witts S, Howell L, Richards R, Rozario C, Hartley M, Tang A. 262 * CHANGES IN CEREBRAL OXIMETRY AND HAEMODYNAMICS DURING OFF-PUMP CORONARY ARTERY BYPASS: MECHANISM FOR PERIOPERATIVE STROKE? Interact Cardiovasc Thorac Surg 2014. [DOI: 10.1093/icvts/ivu276.262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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de Graaf K, Liang P, Tang A, van Hage W, van Vliet H. An exploratory study on ontology engineering for software architecture documentation. COMPUT IND 2014. [DOI: 10.1016/j.compind.2014.04.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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100
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De Jager PL, Srivastava G, Lunnon K, Burgess J, Schalkwyk LC, Yu L, Eaton ML, Keenan BT, Ernst J, McCabe C, Tang A, Raj T, Replogle J, Brodeur W, Gabriel S, Chai HS, Younkin C, Younkin SG, Zou F, Szyf M, Epstein CB, Schneider JA, Bernstein BE, Meissner A, Ertekin-Taner N, Chibnik LB, Kellis M, Mill J, Bennett DA. Alzheimer's disease: early alterations in brain DNA methylation at ANK1, BIN1, RHBDF2 and other loci. Nat Neurosci 2014; 17:1156-63. [PMID: 25129075 PMCID: PMC4292795 DOI: 10.1038/nn.3786] [Citation(s) in RCA: 638] [Impact Index Per Article: 63.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Accepted: 07/16/2014] [Indexed: 02/07/2023]
Abstract
We used a collection of 708 prospectively collected autopsied brains to assess the methylation state of the brain's DNA in relation to Alzheimer's disease (AD). We found that the level of methylation at 71 of the 415,848 interrogated CpGs was significantly associated with the burden of AD pathology, including CpGs in the ABCA7 and BIN1 regions, which harbor known AD susceptibility variants. We validated 11 of the differentially methylated regions in an independent set of 117 subjects. Furthermore, we functionally validated these CpG associations and identified the nearby genes whose RNA expression was altered in AD: ANK1, CDH23, DIP2A, RHBDF2, RPL13, SERPINF1 and SERPINF2. Our analyses suggest that these DNA methylation changes may have a role in the onset of AD given that we observed them in presymptomatic subjects and that six of the validated genes connect to a known AD susceptibility gene network.
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