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Ross H, Kfoury A, Van Bakel A, Ewald G, Burton J, Andreassen A, Segovia J, Lopez P, Cines M, Dong G, Potena L. 171 Lower Incidence of Viral Infections with Everolimus Versus MMF in De Novo Heart Transplant Recipients: 12 Month Analysis of a Randomized Multicenter Study. J Heart Lung Transplant 2011. [DOI: 10.1016/j.healun.2011.01.178] [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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Pauly D, Starling R, Kobashigawa J, Wang S, Cantin B, Keogh A, Lehmkuhl H, Hirt S, Lopez P, Dong G, Cines M, Jiang H, Eisen H. 57 Heart Transplant Recipients Treated with Everolimus Have Less Increase in Intimal Thickness vs MMF, Irrespective of Lipid Values. J Heart Lung Transplant 2011. [DOI: 10.1016/j.healun.2011.01.064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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53
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Kobashigawa J, Pauly D, Ross H, Wang S, Cantin B, Burton J, Keogh A, Eisen H, Lopez P, Dong G, Jiang H, Cines M, Starling R. 52 Reduction of Cardiac Allograft Vasculopathy with Everolimus over Mycophenolate Mofetil: Intravascular Ultrasound Results of a Randomized Multicenter Trial. J Heart Lung Transplant 2011. [DOI: 10.1016/j.healun.2011.01.059] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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54
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Dong G, Ferguson JM, Duling AJ, Nicholas RG, Zhang D, Rezvani K, Fang S, Monteiro MJ, Li S, Li XJ, Wang H. Modeling pathogenesis of Huntington's disease with inducible neuroprogenitor cells. Cell Mol Neurobiol 2011; 31:737-47. [PMID: 21452052 DOI: 10.1007/s10571-011-9679-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2011] [Accepted: 02/19/2011] [Indexed: 11/30/2022]
Abstract
Huntington's disease (HD) is caused by an abnormal expansion of CAG trinucleotide repeats encoding polyglutamine (polyQ) in the first exon of the huntingtin (htt) gene. Despite considerable efforts, the pathogenesis of HD remains largely unclear due to a paucity of models that can reliably reproduce the pathological characteristics of HD. Here, we report a neuronal cell model of HD using the previously established tetracycline regulated rat neuroprogenitor cell line, HC2S2. Stable expression of enhanced green fluorescence protein tagged htt exon 1 (referred to as 28Q and 74Q, respectively) in the HC2S2 cells did not affect rapid neuronal differentiation. However, compared to the cells expressing wild type htt, the cell line expressing mutant htt showed an increase in time-dependent cell death and neuritic degeneration, and displayed increased vulnerability to oxidative stress. Increased protein aggregation during the process of neuronal aging or when the cells were exposed to oxidative stress reagents was detected in the cell line expressing 74Q but not in its counterpart. These results suggest that the neuroprogenitor cell lines mimic the major neuropathological characteristics of HD and may provide a useful tool for studying the neuropathogenesis of HD and for high throughput screening of therapeutic compounds.
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Chu D, Zhang Z, Zhou Y, Wang W, Li Y, Zhang H, Dong G, Zhao Q, Ji G. Notch1 and Notch2 have opposite prognostic effects on patients with colorectal cancer. Ann Oncol 2011; 22:2440-2447. [PMID: 21378202 DOI: 10.1093/annonc/mdq776] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Aberrantly activated Notch signaling has been shown to play a key role in carcinogenesis and progression of various human malignancies. In this study, we investigated the expression of Notch1 and Notch2 in colorectal cancer to determine whether they could serve as prognostic predictors. PATIENTS AND METHODS The protein expression of Notch1 and Notch2 was examined by immunohistochemistry in 1003 clinical colorectal cancer specimens. Notch1 and Notch2 protein levels were investigated by immunohistochemistry. Statistical analysis was carried out to assess their prognostic value. RESULTS Significantly negative correlation between Notch1 and Notch2 was found in colorectal cancer (P < 0.001). Notch1 and Notch2 were proved to be inversely correlated with tumor differentiation, depth of invasion, lymph node metastases, distant metastasis, TNM (tumor-node-metastasis) stage and survival of patients, suggesting opposite function of the two receptors. Notch1 and Notch2 were proved to be adverse independent prognostic predictors (P < 0.001). Moreover, a synergistic effect of positive Notch1 and negative Notch2 coexpression on predicting poor overall survival was proved. CONCLUSIONS Notch1 and Notch2 may be independent adverse prognostic predictors for patients with colorectal cancer. These results would contribute to identify more efficient prognostic predictors and therapeutic targets.
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Du XY, Zhu XD, Dong G, Lu J, Wang Y, Zeng L, Zhao TY, Ye HH, Li RS, Bai JY, Chen ZW. Characteristics of Circle of Willis Variations in the Mongolian Gerbil and a Newly Established Ischemia-Prone Gerbil Group. ILAR J 2011; 52:E1-7. [DOI: 10.1093/ilar.52.1.e1] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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57
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Gupta MN, Dong G, Mattiasson B. Purification of endo-polygalacturonase by affinity precipitation using alginate. Biotechnol Appl Biochem 2010. [DOI: 10.1111/j.1470-8744.1993.tb00275.x] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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58
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Peng L, Ren LB, Dong G, Wang CL, Xu P, Ye L, Zhou XD. Wnt5a promotes differentiation of human dental papilla cells. Int Endod J 2010; 43:404-12. [PMID: 20518933 DOI: 10.1111/j.1365-2591.2010.01693.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
AIM To investigate the role of Wnt5a in the process of differentiation of human dental papilla cells (HDPCs). METHODOLOGY Recombinant adenovirus encoding full-length Wnt5a cDNA was constructed to investigate the biological role of Wnt5a on the differentiation of HDPCs. The effect of Wnt5a on HDPCs differentiation was determined by ALP activity assay, ALP staining and mineral induction assay. Mineralization-related gene expressions were assessed by RT-PCR. RESULTS Immunostaining revealed Wnt5a expression in the odontoblast layer and dental papilla tissue. Over-expression of Wnt5a by transfecting HDPCs with an Wnt5a-carrying construct increased ALPase activity and the formation of mineralized nodules of HDPCs. RT-PCR analysis showed that the expressions of mineralization-related genes, such as bone sialoprotein, collagen type I, osteonectin, osteopontin (OCN), dentine matrix protein-1 were up-regulated by Wnt5a. CONCLUSIONS Wnt5a promoted differentiation of HDPCs.
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59
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Li Z, Bitao Y, Tao L, Wu X, Dong G, Liu X. Analysis of school based student injury surveillance project in Shenzhen, China. Inj Prev 2010. [DOI: 10.1136/ip.2010.029215.199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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60
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Li Z, Dong G. Epidemiological survey of the road-related traffic injury in the pedestrian of school children in Shen Zhen. Inj Prev 2010. [DOI: 10.1136/ip.2010.029215.24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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61
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Wang C, Xu P, Ren L, Dong G, Ye L. Comparison of post-obturation pain experience following one-visit and two-visit root canal treatment on teeth with vital pulps: a randomized controlled trial. Int Endod J 2010; 43:692-7. [DOI: 10.1111/j.1365-2591.2010.01748.x] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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62
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Dong G, Wang X, Liu Z, Wang F. Effects of phytogenic products on in vitro rumen
fermentation and methane emission in goats. JOURNAL OF ANIMAL AND FEED SCIENCES 2010. [DOI: 10.22358/jafs/66283/2010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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63
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Huang Z, Zhang JX, Yang Z, Dong G, Wu J, Chan AS, Weng X. Verbal memory retrieval engages visual cortex in musicians. Neuroscience 2010; 168:179-89. [PMID: 20303392 DOI: 10.1016/j.neuroscience.2010.03.027] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2009] [Revised: 03/01/2010] [Accepted: 03/12/2010] [Indexed: 11/17/2022]
Abstract
As one major line of research on brain plasticity, many imaging studies have been conducted to identify the functional and structural reorganization associated with musical expertise. Based on previous behavioral research, the present study used functional magnetic resonance imaging to identify the neural correlates of superior verbal memory performance in musicians. Participants with and without musical training performed a verbal memory task to first encode a list of words auditorily delivered and then silently recall as many words as possible. They performed in separate blocks a control task involving pure tone pitch judgment. Post-scan recognition test showed better memory performance in musicians than non-musicians. During memory retrieval, the musicians showed significantly greater activations in bilateral though left-lateralized visual cortex relative to the pitch judgment baseline. In comparison, no such visual cortical activations were found in the non-musicians. No group differences were observed during the encoding stage. The results echo a previous report of visual cortical activation during verbal memory retrieval in the absence of any visual sensory stimulation in the blind population, who are also known to possess superior verbal memory. It is suggested that the visual cortex can be recruited to serve as extra memory resources and contributes to the superior verbal memory in special situations. While in the blind population, such cross-modal functional reorganization may be induced by sensory deprivation; in the musicians it may be induced by the long-term and demanding nature of musical training to use as much available neural resources as possible.
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Barten M, Arizon J, Dong G, Eisen H, Kobashigawa J, Lehmkuhl H, Ross H, Vigano M, Wang SS, Zuckermann A. 270: BMI Is an Independent Risk Factor for Surgical Wound Complication in de-novo Heart Transplant Recipients (HTxR) Regardless of the Immunosuppressive Therapy. J Heart Lung Transplant 2010. [DOI: 10.1016/j.healun.2009.11.282] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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65
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Peng L, Dong G, Xu P, Ren L, Wang C, Aragon M, Zhou X, Ye L. Expression of Wnt5a in tooth germs and the related signal transduction analysis. Arch Oral Biol 2010; 55:108-14. [DOI: 10.1016/j.archoralbio.2009.12.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2009] [Revised: 11/19/2009] [Accepted: 12/04/2009] [Indexed: 11/27/2022]
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66
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Peng L, Ye L, Dong G, Ren L, Wang C, Xu P, Zhou X. WNT5A inhibits human dental papilla cell proliferation and migration. Biochem Biophys Res Commun 2009; 390:1072-8. [DOI: 10.1016/j.bbrc.2009.10.136] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2009] [Accepted: 10/23/2009] [Indexed: 10/20/2022]
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Lu M, Wang Z, Jiang Y, Xu J, Dong G. UP-3.185: Salvage Extracorporeal Shockwave Lithotripsy (ESWL) Treatment after Initial Lithotripsy Failure by Semirigid Ureteroscopy. Urology 2009. [DOI: 10.1016/j.urology.2009.07.190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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68
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Zuckermann A, Kobashigawa J, Arizon J, Wang SS, Vigano M, Lehmkuhl H, Ross H, Dong G, Eisen H. 297: Incidences of Incisional Complications after De Novo Cardiac Transplantation in AZA-, MMF- or Everolimus-Based Regimens: A Cross-Study Analysis on 1008 Patients. J Heart Lung Transplant 2009. [DOI: 10.1016/j.healun.2008.11.304] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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69
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Lehmkuhl H, Ross H, Arizon J, Wang SS, Livi U, Dengler T, Pellegrini C, Zuckermann A, Dong G, Korom S, Bara C. 299: Comparability of Pattern of Occurrence of Pericardial Effusions between Everolimus- and MMF-Based Regimen in De Novo Cardiac Transplant Recipients. J Heart Lung Transplant 2009. [DOI: 10.1016/j.healun.2008.11.883] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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70
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Wang J, Liu X, Hou WH, Dong G, Wei Z, Zhou H, Duan YY. The Relationship between Intra-Operative Ultrasonography and Pathological Grade in Cerebral Glioma. J Int Med Res 2008; 36:1426-34. [PMID: 19094454 DOI: 10.1177/147323000803600632] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The value of intra-operative ultrasound as a tool in guiding resection of cerebral gliomas and the relationship between the appearance of brain tissue on intra-operative ultrasonography and pathological grade of cerebral glioma were investigated in 98 patients who underwent neurosurgical tumour removal. Lesions were classified according to pathological grade. Intra-operative ultrasonography orientated all the cerebral gliomas accurately and helped the neurosurgeon in assessing the tumour prior to removal. All lesions were hyperechoic compared with normal brain tissue, and the majority of lesions displayed irregular shapes and indistinct margins. Different pathological grades of glioma presented different ultrasonographic appearances. The majority of low-grade (I and II) cerebral gliomas were homogeneous, with distinct margins and clear surrounding oedema compared with adjacent brain tissue. High-grade (III and IV) cerebral gliomas mostly exhibited poorly defined borders and central necrosis, and the surrounding oedema was difficult to distinguish from the lesions. Residual tumour or haematoma were identified. In conclusion, intra-operative ultrasonography is of great value in locating and assessing the grade of cerebral glioma, and is conducive to enabling early evaluation and total removal of the lesion.
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Dong G, Sun Z, Zheng L, Li J, Zhang X, Xu C, Hu D, Sun Y. Factors associated with hypertension awareness, treatment and control in rural Chinese. J Hum Hypertens 2007; 22:366-9. [PMID: 18007682 DOI: 10.1038/sj.jhh.1002303] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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72
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Hao X, Dong G, Yang Y, Xu Y, Li Y. Coal to Liquid (CTL): Commercialization Prospects in China. Chem Eng Technol 2007. [DOI: 10.1002/ceat.200700148] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Abstract
Nephrotoxicity induced by cisplatin involves tubular cell necrosis and apoptosis; the latter of which may be initiated by multiple mechanisms including activation of the intrinsic mitochondrial pathway. In cultured tubular epithelial cells, cisplatin can activate the proapoptotic protein Bax resulting in cytochrome c release, caspase activation, and apoptosis. Definitive evidence for the involvement of Bax in cisplatin nephrotoxicity in vivo, however, is lacking. We analyzed Bax regulation during cisplatin nephrotoxicity in wild-type mice and determined the pathological role of Bax using mice in which this gene was knocked out. In wild-type mice, cisplatin induced Bax in renal tubular cells which became active, accumulated in the mitochondria, and was accompanied by acute kidney injury. Compared with the wild-type mice renal function, as measured by blood urea nitrogen and serum creatinine, was partially but significantly preserved in Bax knockout mice. The number of apoptotic cells was decreased as was general tissue damage. Additionally, cisplatin-induced cytochrome c release was attenuated in the Bax-deficient mice. This significant decrease in apoptosis and in cytochrome c release was also mirrored in primary cultures of proximal tubular cells prepared from Bax knockout animals. Collectively, our results provide compelling evidence for a role of Bax and its related apoptotic pathway in cisplatin nephrotoxicity.
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Ren B, Wu H, Zhu J, Li D, Shen Y, Ying R, Dong G, Jing H. Ulinastatin attenuates lung ischemia-reperfusion injury in rats by inhibiting tumor necrosis factor alpha. Transplant Proc 2007; 38:2777-9. [PMID: 17112827 DOI: 10.1016/j.transproceed.2006.08.166] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2006] [Indexed: 10/23/2022]
Abstract
UNLABELLED Ischemia-reperfusion (I/R) injury may influence graft function following transplantation. Ulinastatin, a urinary trypsin inhibitor has been shown to attenuate I/R injury in various organs such as intestine, heart, and kidney in animals. The present experiment was designed to evaluate the effect of pretreatment with ulinastatin on I/R-induced lung injury. METHODS After establishing a constant left lung warm ischemia-reperfusion model in rats, 45 animals were randomly divided into three experimental groups: sham group (n = 15), IR group (n = 15), and ulinastatin (5000 U/kg pre-ischemia) + IR group (n = 15). The lung injury was evaluated by tissue myeloperoxidase activity, with simultaneous estimation of the serum concentration of TNFalpha. RESULTS The ulinastatin-pretreated animals exhibited markedly decreased lung tissue myeloperoxidase activity (P < .05). Blood gas analysis demonstrated, that the treated animals had significantly ameliorated pulmonary oxygenation (P < .05). The serum concentration of TNF-alpha in the ulinastatin-pretreated group was markedly decreased compared with that of the I/R group (P < .05). CONCLUSIONS Ulinastatin attenuated I/R-induced lung injury. This function is partly related to the capacity of the agent to inhibit myeloperoxidase activity in lung tissue and decrease systemic expression to TNF-alpha.
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75
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Novick P, Medkova M, Dong G, Hutagalung A, Reinisch K, Grosshans B. Interactions between Rabs, tethers, SNAREs and their regulators in exocytosis. Biochem Soc Trans 2007; 34:683-6. [PMID: 17052174 DOI: 10.1042/bst0340683] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Sec2p is the exchange factor that activates Sec4p, the Rab GTPase controlling the final stage of the yeast exocytic pathway. Sec2p is recruited to secretory vesicles by Ypt32-GTP, a Rab controlling exit from the Golgi. Sec15p, a subunit of the octameric exocyst tethering complex and an effector of Sec4p, binds to Sec2p on secretory vesicles, displacing Ypt32p. Sec2p mutants defective in the region 450-508 amino acids bind to Sec15p more tightly. In these mutants, Sec2p accumulates in the cytosol in a complex with the exocyst and is not recruited to vesicles by Ypt32p. Thus the region 450-508 amino acids negatively regulates the association of Sec2p with the exocyst, allowing it to recycle on to new vesicles. The structures of one nearly full-length exocyst subunit and three partial subunits have been determined and, despite very low sequence identity, all form rod-like structures built of helical bundles stacked end to end. These rods may bind to each other along their sides to form the assembled complex. While Sec15p binds Sec4-GTP on the vesicle, other subunits bind Rho GTPases on the plasma membrane, thus tethering vesicles to exocytic sites. Sec4-GTP also binds Sro7p, a yeast homologue of the Drosophila lgl (lethal giant larvae) tumour suppressor. Sro7 also binds to Sec9p, a SNAP25 (25 kDa synaptosome-associated protein)-like t-SNARE [target-membrane-associated SNARE (soluble N-ethylmaleimide-sensitive fusion protein attachment protein receptor)], and can form a Sec4p-Sro7p-Sec9p ternary complex. Overexpression of Sec4p, Sro7p or Sec1p (another SNARE regulator) can bypass deletions of three different exocyst subunits. Thus promoting SNARE function can compensate for tethering defects.
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