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Ding L, Zhang J, Yu S, Sheng L. Investigation of genes in chronic and acute morphine-treated mice using microarray datasets. GENETICS AND MOLECULAR RESEARCH 2015; 14:10193-205. [DOI: 10.4238/2015.august.28.3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Ding L, Wang XQ, Zhang J, Mu ZL, Zhou XX, Liu PS. Underlying mechanism of 2-methoxyestradiol-induced apoptosis and growth arrest in SKOV3 human ovarian cancer cells. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2015; 19:2084-2090. [PMID: 26125273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE In this study, we sought to investigate the effects of 2-methoxyestradiol (2-ME) on cisplatin-induced apoptosis and growth inhibition in SKOV3 ovarian cancer cells. MATERIALS AND METHODS Cells were treated with 2-ME, carboplatin, or both, the control group, and cell viability and growth inhibition assays were performed using the MTT method. Apoptosis was detected by flow cytometry analysis. Reverse transcription polymerase chain reaction and western blotting were used to monitor the mRNA and protein expression of the pro-apoptotic genes bax and caspase-3 and the anti-apoptotic gene bcl-2. The phosphorylation of Bcl-2 protein was monitored by western blotting. RESULTS Cell viability was inhibited by all three treatments in a time-dependent manner. Importantly, the combination treatment resulted in significantly reduced cell growth compared with the other groups. The mRNA and protein expression of Bax and caspase-3 were increased in the combination treatment group, and the expression of Bcl-2 was decreased in the combination treatment group as compared with the other two groups. The ratio of bax to Bcl-2 mRNA in the combination treatment group was higher than that in the carboplatin-treated group. Finally, phosphorylation of Bcl-2 protein was increased stronger in the combination treatment group compared with the carboplatin-treated group. CONCLUSIONS 2-ME promoted the growth inhibitory and apoptosis-inducing effects of platinum-based agents in SKOV3 ovarian cancer cells. The mechanism mediating this effect may be related to the phosphorylation of Bcl-2 protein, which reduces the formation of dimers and, thereby, increases apoptosis. Moreover, 2-ME promoted the mRNA and protein expression of Bax, thereby, increasing the Bax/Bcl-2 expression ratio and activating the mitochondrial apoptosis pathway.
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Chen B, Wang R, Chen Y, Zhu Y, Ding L, Wen Y. Association between HLA-DRB1 alleles and tuberculosis: a meta-analysis. GENETICS AND MOLECULAR RESEARCH 2015; 14:15859-15868. [DOI: 10.4238/2015.december.1.37] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
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Sun HJ, Zhou H, Feng XM, Gao Q, Ding L, Tang CS, Zhu GQ, Zhou YB. Superoxide anions in the paraventricular nucleus mediate cardiac sympathetic afferent reflex in insulin resistance rats. Acta Physiol (Oxf) 2014; 212:267-82. [PMID: 25307720 DOI: 10.1111/apha.12405] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Revised: 05/26/2014] [Accepted: 10/06/2014] [Indexed: 12/14/2022]
Abstract
AIM Cardiac sympathetic afferent reflex (CSAR) participates in sympathetic over-excitation. Superoxide anions and angiotensin II (Ang II) mechanisms are associated with sympathetic outflow and CSAR in the paraventricular nucleus (PVN). This study was designed to investigate whether PVN superoxide anions mediate CSAR and Ang II-induced CSAR enhancement response in fructose-induced insulin resistance (IR) rats. METHODS CSAR was evaluated with the changes of renal sympathetic nerve activity (RSNA) and mean arterial pressure (MAP) responses to the epicardial application of capsaicin (CAP) in anaesthetized rats. RESULTS Compared with Control rats, IR rats showed that CSAR, PVN NAD(P)H oxidase activity, superoxide anions, malondialdehyde (MDA), Ang II and AT1 receptor levels were significantly increased, whereas PVN superoxide dismutase (SOD) and catalase (CAT) activities were decreased. In Control and IR rats, PVN microinjection of superoxide anions scavengers tempol, tiron and PEG-SOD (an analogue of endogenous superoxide dismutase) or inhibition of PVN NAD(P)H oxidase with apocynin caused significant reduction of CSAR, respectively, but DETC (a superoxide dismutase inhibitor) strengthened the CSAR. PVN pre-treatment with tempol abolished, whereas DETC potentiated, Ang II-induced CSAR enhancement response. Moreover, PVN pre-treatment with tempol or losartan prevented superoxide anions increase caused by Ang II in IR rats. CONCLUSION PVN superoxide anions mediate CSAR and Ang II-induced CSAR response in IR rats. In IR state, increased NAD(P)H oxidase activity and decreased SOD and CAT activities in the PVN promote superoxide anions increase to involve in CSAR enhancement. Ang II may increase NAD(P)H oxidase activity via AT1 receptor to induce superoxide anion production.
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Hua W, Chen K, Zhou X, Dai Y, Chen R, Wang J, Ding L, Liu Z, Feng T, Yu J, Cheng J, Liu C, Zhang S. Cardiac resynchronization therapy reduces T-wave alternans in patients with heart failure. Europace 2014; 17:281-8. [DOI: 10.1093/europace/euu258] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Miloslavsky EM, Specks U, Merkel PA, Seo P, Spiera R, Langford CA, Hoffman GS, Kallenberg CGM, St Clair EW, Tchao NK, Viviano L, Ding L, Iklé D, Villarreal M, Jepson B, Brunetta P, Allen NB, Fervenza FC, Geetha D, Keogh K, Kissin EY, Monach PA, Peikert T, Stegeman C, Ytterberg SR, Stone JH. Rituximab for the treatment of relapses in antineutrophil cytoplasmic antibody-associated vasculitis. Arthritis Rheumatol 2014; 66:3151-9. [PMID: 25047592 PMCID: PMC4229846 DOI: 10.1002/art.38788] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Accepted: 07/15/2014] [Indexed: 01/29/2023]
Abstract
OBJECTIVE Disease relapses are frequent in antineutrophil cytoplasmic antibody-associated vasculitis (AAV). This study was undertaken to evaluate outcomes in patients with AAV who are re-treated with rituximab (RTX) and prednisone for severe disease relapses. METHODS The Rituximab in AAV trial was a randomized, double-blind, placebo-controlled trial comparing the rates of remission induction among patients treated with RTX (n = 99) and patients treated with cyclophosphamide (CYC) followed by azathioprine (AZA) (n = 98). Prednisone was tapered to discontinuation after 5.5 months. After remission was achieved, patients who experienced a severe disease relapse between months 6 and 18 were eligible to receive RTX and prednisone on an open-label basis according to a prespecified protocol. Investigators remained blinded with regard to the original treatment assignment. RESULTS Twenty-six patients received RTX for disease relapse after remission had initially been achieved with their originally assigned treatment. Fifteen of these patients were initially randomized to receive RTX and 11 to receive CYC/AZA. Thirteen (87%) of the patients originally assigned to receive RTX and 10 (91%) originally assigned to receive CYC/AZA achieved remission again with open-label RTX (an overall percentage of 88%). In half of the patients treated with open-label RTX, prednisone could be discontinued entirely. Patients in this cohort experienced fewer adverse events compared to the overall study population (4.7 adverse events per patient-year versus 11.8 adverse events per patient-year). CONCLUSION Re-treatment of AAV relapses with RTX and glucocorticoids appears to be a safe and effective strategy, regardless of previous treatment.
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Barsila S, Kreuzer M, Devkota N, Ding L, Marquardt S. Adaptation to Himalayan high altitude pasture sites by yaks and different types of hybrids of yaks with cattle. Livest Sci 2014. [DOI: 10.1016/j.livsci.2014.09.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Ding L, Yu M, Chan A. 1-YEAR TARGET VESSEL REVASCULARIZATION AFTER PERCUTANEOUS CORONARY INTERVENTION IN BC (2010-2012). Can J Cardiol 2014. [DOI: 10.1016/j.cjca.2014.07.090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Fung A, Zhang R, Boone R, Chan A, Della Siega A, Townley R, Kmetic A, Ding L. DETECTION, EXTENT, AND TEMPORAL TRENDS OF OBSTRUCTIVE CORONARY ARTERY DISEASE AMONG PATIENTS UNDERGOING ELECTIVE CARDIAC CATHETERIZATION IN BRITISH COLUMBIA. Can J Cardiol 2014. [DOI: 10.1016/j.cjca.2014.07.091] [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] Open
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Pu A, Ding L, Shin J, Abel J. INDEPENDENT FACTORS ASSOCIATED WITH 5-YEAR REPEAT REVASCULARIZATION AFTER CORONARY ARTERY BYPASS SURGERY IN BC, 2000-2011. Can J Cardiol 2014. [DOI: 10.1016/j.cjca.2014.07.240] [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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211
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Zhang R, Ding L. TREATMENT RECOMMENDED AND RECEIVED FOLLOWING DIAGNOSTIC CATHETERIZATION FOR CORONARY ARTERY DISEASE IN BC, 2001-2012. Can J Cardiol 2014. [DOI: 10.1016/j.cjca.2014.07.095] [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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Ng C, Shin J, Ding L. TRENDS AND VARIATION IN TRANSFUSION RATES FOLLOWING CARDIAC SURGERY IN BRITISH COLUMBIA, 2009 TO 2013. Can J Cardiol 2014. [DOI: 10.1016/j.cjca.2014.07.209] [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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Bennett M, Ayers D, Ding L, Jackson H, Krahn A. THERE IS NO DIFFERENCE IN LONGEVITY OF IMPLANTABLE CARDIOVERTER-DEfiBRILLATORS BETWEEN MANUFACTURERS. Can J Cardiol 2014. [DOI: 10.1016/j.cjca.2014.07.529] [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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Ding L, Tina Y, Zhang R. A CONTEMPORARY VIEW OF DIAGNOSTIC CARDIAC CATHETERIZATION AND REVASCULARIZATION IN BC: A REPORT FROM THE PROVINCIAL CARDIAC DATA REGISTRY, 2009 - 2013. Can J Cardiol 2014. [DOI: 10.1016/j.cjca.2014.07.058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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215
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Bennett M, Ayers D, Ding L, Jackson H, Krahn A. LONG-TERM SURVIVAL AFTER IMPLANTABLE CARDIOVERTER DEFIBRILLATOR IMPLANTATION: A POPULATION-BASED STUDY. Can J Cardiol 2014. [DOI: 10.1016/j.cjca.2014.07.603] [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] Open
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216
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Sioshansi S, Rava P, Karam A, Ding L, FitzGerald T. Tolerance Dose of the Diaphragm With Liver SBRT. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.1197] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Ding L, Wu F, Lu Y, Li L, Jia Y, Jin T, Wu K. Adipose-Derived Stem Cells with the Control Release Vegf Polylactic Acid Fiber Catheters Gelatin Scaffold for Tissue Engineering. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu358.34] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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218
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Liu Y, Ma J, Wang Y, Donkor PO, Li Q, Gao S, Hou Y, Xu Y, Cui J, Ding L, Zhao F, Kang N, Chen L, Qiu F. Eudesmane-Type Sesquiterpenes fromCurcuma phaeocaulisand Their Inhibitory Activities on Nitric Oxide Production in RAW 264.7 Cells. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402465] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Sun H, Hattori N, Chien W, Sun Q, Sudo M, E-Ling GL, Ding L, Lim SL, Shacham S, Kauffman M, Nakamaki T, Koeffler HP. KPT-330 has antitumour activity against non-small cell lung cancer. Br J Cancer 2014; 111:281-91. [PMID: 24946002 PMCID: PMC4102938 DOI: 10.1038/bjc.2014.260] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Revised: 04/14/2014] [Accepted: 04/23/2014] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND We investigated the biologic and pharmacologic activities of a chromosome region maintenance 1 (CRM1) inhibitor against human non-small cell lung cancer (NSCLC) cells both in vitro and in vivo. METHODS The in vitro and in vivo effects of a novel CRM1 inhibitor (KPT-330) for a large number of anticancer parameters were evaluated using a large panel of 11 NSCLC cell lines containing different key driver mutations. Mice bearing human NSCLC xenografts were treated with KPT-330, and tumour growth was assessed. RESULTS KPT-330 inhibited proliferation and induced cell cycle arrest and apoptosis-related proteins in 11 NSCLC cells lines. Moreover, the combination of KPT-330 with cisplatin synergistically enhanced the cell kill of the NSCLC cells in vitro. Human NSCLC tumours growing in immunodeficient mice were markedly inhibited by KPT-330. Also, KPT-330 was effective even against NSCLC cells with a transforming mutation of either exon 20 of EGFR, TP53, phosphatase and tensin homologue, RAS or PIK3CA, suggesting the drug might be effective against a variety of lung cancers irrespective of their driver mutation. CONCLUSIONS Our results support clinical testing of KPT-330 as a novel therapeutic strategy for NSCLC.
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Gilbertson R, Parker M, Mohankumar KM, Punchihewa C, Weinlich R, Dalton JD, Li Y, Lee R, Tatevossian RG, Phoenix TN, Thiruvenkatam R, White E, Tang B, Orisme W, Gupta K, Rusch M, Chen X, Li Y, Nagahawhatta P, Hedlund E, Finkelstein D, Wu G, Shurtleff S, Easton J, Boggs K, Yergeau D, Vadodaria B, Mulder HL, Becksford J, Gupta P, Huether R, Ma J, Song G, Gajjar A, Merchant T, Boop F, Smith AA, Ding L, Lu C, Ochoa K, Zhao D, Fulton RS, Fulton LL, Mardis ER, Wilson RK, Downing JR, Green DR, Zhang J, Ellison DW, Gilbertson RJ. C11ORF95-RELA FUSIONS DRIVE ONCOGENIC NF-KB SIGNALING IN EPENDYMOMA. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou206.57] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Shen B, Wang W, Ding L, Sao Y, Huang Y, Shen Z, Zhuo Y, Wei Z, Zhang W. Nuclear factor erythroid 2-related factor 2 rescues the oxidative stress induced by di-N-butylphthalate in testicular Leydig cells. Hum Exp Toxicol 2014; 34:145-52. [PMID: 24917652 DOI: 10.1177/0960327114530744] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Aim: This study aimed to determine whether nuclear factor erythroid 2-related factor 2 antagonized the oxidative stress induced by di- N-butylphthalate (DBP) in testicular Leydig cells. Methods: Mouse TM3 testicular Leydig cells were treated with Nrf2 knockdown (KD) or overexpression in the presence and absence of DBP. Oxidative profiles were examined. Nrf2 target antioxidant genes were studied, and the effects of Nrf2 inducer sulphoraphane (SFN) were tested. Results: DBP induced intracellular oxidative stress to a similar extent with Nrf2 KD. Expression and protein levels of Nrf2 were increased together with its target genes, namely heme oxygenase 1, nicotinamide adenine dinucleotide phosphate quinone oxidoreductase 1 and peroxiredoxin 6, following DBP stimulation. Use of SFN not only restored the intracellular oxidative toxicity but also cell proliferation and testosterone secretion in response to DBP. Conclusion: Increased Nrf2 activity, for example, by SFN can effectively antagonize the oxidative stress in testicular Leydig cells caused by DBP.
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Owczarczyk K, Holweg C, Ortmann W, Behrens T, Brunetta P, Specks U, Phippard D, Ding L, Lim N, Tchao N, Ikle D, Stone J. OP0232 The Role of Baseline FCRL5 MRNA Expression in Predicting Response to Rituximab (RTX) Therapy in Patients with Granulomatous Polyangiitis (GPA) or Microscopic Polyangiitis (MPA). Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.4265] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Ding L, Wu JP, Xu G, Zhu B, Zeng QM, Li DF, Lu W. Lentiviral-mediated RNAi targeting caspase-3 inhibits apoptosis induced by serum deprivation in rat endplate chondrocytes in vitro. ACTA ACUST UNITED AC 2014; 47:445-51. [PMID: 24878605 PMCID: PMC4086170 DOI: 10.1590/1414-431x20143198] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2013] [Accepted: 02/20/2014] [Indexed: 01/27/2023]
Abstract
Current studies find that degenerated cartilage endplates (CEP) of vertebrae, with
fewer diffusion areas, decrease nutrient supply and accelerate intervertebral disc
degeneration. Many more apoptotic cells have been identified in degenerated than in
normal endplates, and may be responsible for the degenerated grade. Previous findings
suggest that inhibition of apoptosis is one possible approach to improve disc
regeneration. It is postulated that inhibition of CEP cell apoptosis may be
responsible for the regeneration of endplates. Caspase-3, involved in the execution
phase of apoptosis, is a candidate for regulating the apoptotic process. In the
present study, CEP cells were incubated in 1% fetal bovine serum. Activated caspases
were detected to identify the apoptotic pathway, and apoptosis was quantified by flow
cytometry. Lentiviral caspase-3 short hairpin RNA (shRNA) was employed to study its
protective effects against serum deprivation. Silencing of caspase-3 expression was
quantified by reverse transcription-polymerase chain reaction and Western blots, and
inhibition of apoptosis was quantified by flow cytometry. Serum deprivation increased
apoptosis of rat CEP cells through activation of a caspase cascade. Lentiviral
caspase-3 shRNA was successfully transduced into CEP cells, and specifically silenced
endogenous caspase-3 expression. Surviving cells were protected by the downregulation
of caspase-3 expression and activation. Thus, lentiviral caspase-3 shRNA-mediated
RNAi successfully silenced endogenous caspase-3 expression, preventing inappropriate
or premature apoptosis.
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Yang L, Jiang H, Wang G, Wang M, Ding L, Chen L, Qiu F. Phenylpropanoids and some nitrogen-containing constituents from the roots of Isatis indigotica Fort. (Cruciferae). BIOCHEM SYST ECOL 2014. [DOI: 10.1016/j.bse.2014.03.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Hoffman LM, Donson AM, Nakachi I, Griesinger AM, Birks DK, Amani V, Hemenway MS, Liu AK, Wang M, Hankinson TC, Handler MH, Foreman NK, Zakrzewska M, Zakrzewski K, Fendler W, Stefanczyk L, Liberski PP, Massimino M, Gandola L, Ferroli P, Valentini L, Biassoni V, Garre ML, Sardi I, Genitori L, Giussani C, Massimi L, Bertin D, Mussano A, Viscardi E, Modena P, Mastronuzzi A, Barra S, Scarzello G, Cinalli G, Peretta P, Giangaspero F, Massimino M, Boschetti L, Biassoni V, Garre ML, Schiavello E, Sardi I, Genitori L, Bertin D, Modena P, Calareso G, Barra S, Scarzello G, Cinalli G, Peretta P, Mastronuzzi A, Giussani C, Giangaspero F, Antonelli M, Pecori E, Gandola L, Massimino M, Biassoni V, Di Meco F, Garre ML, Schiavello E, Sardi I, Genitori L, Bertin D, Viscardi E, Modena P, Barra S, Scarzello G, Cinalli G, Peretta P, Migliorati R, Taborelli A, Giangaspero F, Antonelli M, Pecori E, Gandola L, Witt H, Sill M, Wani K, Mack SC, Capper D, Pajtler K, Lambert S, Tzaridis T, Milde T, Northcott PA, Kulozik AE, Witt O, Collins VP, Ellison DW, Taylor MD, Kool M, Jones DTW, Korshunov A, Ken A, Pfister SM, Makino K, Nakamura H, Kuroda JI, Kuratsu JI, Toledano H, Margolin Y, Ohali A, Michowiz S, Witt H, Johann P, Tzaridis T, Tabori U, Walker E, Hawkins C, Taylor M, Yaniv I, Avigad S, Hoffman L, Plimpton SR, Foreman NK, Stence NV, Hankinson TC, Handler MH, Hemenway MS, Vibhakar R, Liu AK, Lourdusamy A, Rahman R, Ward J, Rogers H, Grundy R, Punchihewa C, Lee R, Lin T, Orisme W, Dalton J, Aronica E, Smith A, Gajjar A, Onar A, Pounds S, Tatevossian R, Merchant T, Ellison D, Parker M, Mohankumar K, Punchihewa C, Weinlich R, Dalton J, Tatevossian R, Phoenix T, Thiruvenkatam R, White E, Gupta K, Gajjar A, Merchant T, Boop F, Smith A, Ding L, Mardis E, Wilson R, Downing J, Ellison D, Gilbertson R, Ward J, Lourdusamy A, Speed D, Gould T, Grundy R, Rahman R, Mack SC, Witt H, Pfister SM, Korshunov A, Taylor MD, Consortium TIE, Hoffman LM, Griesinger A, Donson A, Birks D, Amani V, Foreman NK, Ohe N, Yano H, Nakayama N, Iwama T, Wright K, Hassall T, Bowers DC, Crawford J, Bendel A, Fisher PG, Merchant T, Ellison D, Klimo P, Boop F, Armstrong G, Qaddoumi I, Robinson G, Wetmore C, Broniscer A, Gajjar A, Rogers H, Chapman R, Mayne C, Duane H, Kilday JP, Coyle B, Grundy R, Graul-Conroy A, Hartsell W, Bragg T, Goldman S, Rebsamen S, Puccetti D, Salamat S, Patel NJ, Gomi A, Oguma H, Hayase T, Kawahara Y, Yagi M, Morimoto A, Wilbur C, Dunham C, Hawkins C, Tabori U, Mabbott D, Carret AS, Lafay-Cousin L, McNeely PD, Eisenstat D, Wilson B, Johnston D, Hukin J, Mynarek M, Kortmann RD, Kaatsch P, Pietsch T, Timmermann B, Fleischhack G, Benesch M, Friedrich C, von Bueren AO, Gerber NU, Muller K, Tippelt S, Warmuth-Metz M, Rutkowski S, von Hoff K, Murugesan MK, White E, Poppleton H, Thiruvenkatam R, Gupta K, Currle S, Kranenburg T, Eden C, Wright K, Ellison D, Gilbertson R, Boulos N, Dapper J, Patel Y, Wright K, Mohankumar K, Freeman B, Gajjar A, Shelat A, Stewart C, Guy R, Gilbertson R, Adamski J, Taylor M, Tabori U, Huang A, Bartels U, Ramaswamy V, Krishnatry R, Laperriere N, Hawkins C, Bouffet E, Araki A, Chocholous M, Gojo J, Dorfer C, Czech T, Dieckmann K, Slavc I, Haberler C, Pietsch T, Mynarek M, Doerner E, Muehlen AZ, Warmuth-Metz M, Kortmann R, von Buehren A, Friedrich C, von Hoff K, Rutkowski S, von Hoff K, Kortmann RD, Gerber NU, Mynarek M, Muller K, Friedrich C, von Bueren AO, Benesch M, Warmuth-Metz M, Ottensmeier H, Resch A, Kwiecien R, Faldum A, Kuehl J, Pietsch T, Rutkowski S, Sabnis D, Storer L, Simmonds L, Blackburn S, Lowe J, Grundy R, Kerr I, Coyle B, Pietsch T, Wohlers I, Goschzik T, Dreschmann V, Denkhaus D, Doerner E, Rahmann S, Klein-Hitpass L, Iglesias MJL, Riet FG, Dhermain FD, Canale S, Dufour C, Rose CS, Puget S, Grill J, Bolle S, Parkes J, Davidson A, Figaji A, Pillay K, Kilborn T, Padayachy L, Hendricks M, Van Eyssen A, Piccinin E, Lorenzetto E, Brenca M, Massimino M, Modena P, Taylor M, Ramaswamy V, Bouffet E, Aldape K, Cho YJ, Weiss W, Phillips J, Jabado N, Mora J, Fan X, Jung S, Lee JY, Zitterbart K, French P, Kros JM, Hauser P, Faria C, Korshunov A, Pfister S, Mack SC. EPENDYMOMA. Neuro Oncol 2014; 16:i17-i25. [PMCID: PMC4046284 DOI: 10.1093/neuonc/nou068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/07/2023] Open
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Chen K, Zhang N, Ding L, Zhang W, Hu J, Zhu S. Early intra-articular injection of alendronate reduces cartilage changes and subchondral bone loss in rat temporomandibular joints after ovariectomy. Int J Oral Maxillofac Surg 2014; 43:996-1004. [PMID: 24811289 DOI: 10.1016/j.ijom.2014.04.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2013] [Revised: 02/10/2014] [Accepted: 04/03/2014] [Indexed: 02/06/2023]
Abstract
This study investigated the effects of intra-articular injection of alendronate on the mandibular condyle in ovariectomized rats. Sixty rats were divided into five groups: ovariectomy with vehicle treatment alone, early alendronate treatment at ovariectomy, late alendronate treatment at 4 weeks after ovariectomy, sham-operation with vehicle treatment, and normal controls. The changes in cartilage and subchondral bone were evaluated by micro-computed tomography, histology, tartrate-resistant acid phosphatase (TRAP) staining, immunohistochemistry, and real-time quantitative polymerase chain reaction. Compared with late alendronate treatment, early alendronate treatment completely inhibited cartilage thickening (727.6±39.3 vs. 1013.3±51.6; P=0.017) and improved microstructural properties of the subchondral bone, with a higher bone volume ratio (46.4±2.5 vs. 37.5±2.1; P=0.038), trabecular thickness (47.3±1.7 vs. 34.6±1.4; P=0.029), and trabecular number (8.5±0.6 vs. 6.2±0.3; P=0.041) and lower trabecular separation (30.2±1.6 vs. 37.7±2.6; P=0.034). Fewer TRAP-positive cells (4.2±0.2 vs. 6.8±0.4; P=0.019) and a higher OPG/RANKL ratio (0.38±0.01 vs. 0.25±0.03; P=0.043) in the subchondral bone were observed in the animals with early treatment compared to late treatment or ovariectomy/vehicle treatment. In addition, early alendronate treatment blocked the up-regulation of matrix metalloproteinase (MMP)-13 expression in the chondrocytes, whereas late alendronate treatment attenuated the up-regulation of MMP-13 expression. Our results suggest the therapeutic potential of intra-articular alendronate injection in the treatment of osteoporosis-associated temporomandibular disorders.
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Wu Y, Ding L, Huang NY, Wen AD, Liu B, Li WB. Pharmacokinetics of metronidazole, tetracycline and bismuth in healthy volunteers after oral administration of compound tablets containing a combination of metronidazole, tetracycline hydrochloride and bismuth oxide. Drug Res (Stuttg) 2014; 65:74-81. [PMID: 24764254 DOI: 10.1055/s-0034-1372611] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
BACKGROUND To eradicate Helicobacter pylori in human pylorus and to heal duodenal ulcers, recently, a new formulation of combination tablets containing metronidazole 125 mg, tetracycline hydrochloride 125 mg and bismuth oxide 40 mg has been developed. OBJECTIVE To investigate the pharmacokinetics of metronidazole, tetracycline and bismuth in healthy Chinese volunteers after oral administration of the test formulation. METHODS A one-sequence, 3-period study was conducted in 12 Chinese healthy volunteers (6 male, 6 female). Volunteers each received single low dose (1 tablet) under fed condition in period 1, single high dose (3 tablets) under fasted condition in period 2, and single high dose (3 tablets) and multiple doses (3 tablets at once, 4 times daily for 7 consecutive days) under fed condition in period 3. Blood samples were collected and determined over 48 h in every period. RESULTS AND CONCLUSION After single high dose administration under fed condition, the C max of metronidazole, tetracycline and bismuth were 6.833 ± 0.742 μg/mL, 0.8513 ± 0.1253 μg/mL and 3.32 ± 1.89 ng/mL, respectively. The C max and AUC 0-48 of metronidazole increased in proportion to the doses within the tested dose range, but tetracycline and bismuth did not. Food caused 10% and 80% decrease of the C max for metronidazole and bismuth, respectively, but did not affect tetracycline. No gender effect was found on the pharmacokinetics of the 3 ingredients. In the steady state, the C av of metronidazole, tetracycline and bismuth were 20.75 ± 3.52 μg/mL, 1.900 ± 0.243 μg/mL and 5.61 ± 1.34 ng/mL, respectively.
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Zhang Z, Dai D, Yu K, Yuan F, Jin J, Ding L, Hao Y, Liang F, Liu N, Zhao X, Long J, Xi Y, Sun YY. Association of HLA-B27 and ERAP1 with ankylosing spondylitis susceptibility in Beijing Han Chinese. ACTA ACUST UNITED AC 2014; 83:324-9. [PMID: 24666027 DOI: 10.1111/tan.12334] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Revised: 02/11/2014] [Accepted: 02/13/2014] [Indexed: 12/30/2022]
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229
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Ding L, Zhao Z, Ge X, Li Z. Different timing and spatial separation of parental chromosomes in intergeneric somatic hybrids between Brassica napus and Orychophragmus violaceus. GENETICS AND MOLECULAR RESEARCH 2014; 13:2611-8. [DOI: 10.4238/2014.april.8.3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Minden S, Ding L, Cleary P, Frankel D, Glanz B, Healy B, Rintell D. Improving the quality of mental health care in Multiple Sclerosis. J Neurol Sci 2013; 335:42-7. [DOI: 10.1016/j.jns.2013.08.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Revised: 07/22/2013] [Accepted: 08/14/2013] [Indexed: 11/26/2022]
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Miloslavsky EM, Specks U, Merkel PA, Seo P, Spiera R, Langford CA, Hoffman GS, Kallenberg CGM, St Clair EW, Tchao NK, Viviano L, Ding L, Sejismundo LP, Mieras K, Iklé D, Jepson B, Mueller M, Brunetta P, Allen NB, Fervenza FC, Geetha D, Keogh K, Kissin EY, Monach PA, Peikert T, Stegeman C, Ytterberg SR, Stone JH. Clinical outcomes of remission induction therapy for severe antineutrophil cytoplasmic antibody-associated vasculitis. ACTA ACUST UNITED AC 2013; 65:2441-9. [PMID: 23754238 DOI: 10.1002/art.38044] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2012] [Accepted: 05/30/2013] [Indexed: 01/25/2023]
Abstract
OBJECTIVE To evaluate the reasons that complete remission is not achieved or maintained with original treatment in some patients with antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) treated with rituximab (RTX) or with cyclophosphamide/azathioprine (CYC/AZA). METHODS The Rituximab in AAV trial was a randomized, double-blind, placebo-controlled trial comparing the rate of remission induction among patients treated with RTX (n = 99) and patients treated with CYC followed by AZA (n = 98). Glucocorticoids were tapered over a period of 5 months. The primary outcome measure was lack of disease activity without glucocorticoid treatment at 6 months. To determine the most important reason for failure to achieve the primary outcome, 7 hierarchical categories of reasons were defined retrospectively (uncontrolled disease, adverse event leading to therapy discontinuation, severe flare, limited flare, Birmingham Vasculitis Activity Score for Wegener's Granulomatosis >0, prednisone treatment at any dosage, and other). RESULTS Although remission (lack of disease activity) was achieved in 170 of the 197 patients (86%) in the first 6 months, the primary outcome measure was not achieved in 42%. There were 3 deaths. Twenty-four percent of the patients failed to achieve the primary end point due to active disease: 10 (5%) experienced uncontrolled disease in the first month and 37 (19%) experienced flares after initial improvement. In the majority of such patients, treatment with blinded crossover or according to best medical judgment led to disease control. Ninety-one percent of patients who had uncontrolled disease or experienced a severe flare had proteinase 3 (PR3)-ANCA. When patients with uncontrolled disease were excluded from analysis, those who were PR3-ANCA positive were found to experience fewer flares when treated with RTX compared to CYC/AZA (8 of 59 [14%] versus 20 of 62 [32%]; P = 0.02). Neither ANCA titers nor B cell counts predicted disease flare. CONCLUSION Current treatment regimens are largely successful in controlling AAV, but in approximately one-fourth of patients, active disease persists or recurs in the first 6 months despite treatment. PR3-ANCA positivity is a risk factor for recurrence or persistence of severe disease. ANCA titers and B cell detectability are poor predictors of both disease relapse and disease quiescence in the first 6 months.
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Caretti V, Noll A, Woo P, Monje M, Cockle J, Bruning-Richardson A, Picton S, Levesley J, Ilett E, Short S, Melcher A, Lawler S, Garzia L, Dubuc A, Pitcher G, Northcott P, Mariampillai A, Mack S, Zayne K, Chan T, Skowron P, Wu X, Lionel A, Morrisy S, Hawkins C, Kongkham P, Rutka J, Huang A, Kenney A, Yang V, Salter M, Taylor M, Garzia L, Morrisy S, Skowron P, Jelveh S, Lindsay P, Largaespada D, Collier L, Dupuy A, Hill R, Taylor M, Hsieh TH, Wang HW, Cheng WC, Wong TT, Huang X, He Y, Dubuc A, Hashizume R, Zhang W, Stehbens S, Younger S, Barshow S, Zhu S, Wu X, Taylor M, Mueller S, Weiss W, James D, Shuman M, Jan YN, Jan L, Marigil M, Jauregi P, Idoate MA, Xipell E, Aldave G, Gonzalez-Huarriz M, Tejada-Solis S, Diez-Valle R, Montero-Carcaboso A, Mora J, Alonso MM, Taylor K, Mackay A, Truffaux N, Morozova O, Butterfield Y, Phillipe C, Vinci M, de Torres C, Cruz O, Mora J, Hargrave D, Monje M, Puget S, Yip S, Jones C, Grill J, Kaul A, Chen YH, Dahiya S, Emnett R, Gianino S, Gutmann D, Miwa T, Oi S, Nonaka Y, Sasaki H, Yoshida K, Lopez E, de Leon AP, Sepulveda C, Zarate L, Diego-Perez J, Pong W, Ding L, McLellan M, Hussain I, Emnett R, Gianino S, Higer S, Leonard J, Guha A, Mardis E, Gutmann D, Sarkar C, Pathak P, Jha P, Purkait S, Sharma V, Sharma MC, Suri V, Faruq M, Mukherjee M, Sivasankaran B, Velayutham RP, Fraschilla IR, Morris KJ, MacDonald TJ, Read TA, Sturm D, Northcott P, Jones D, Korshunov A, Picard D, Lichter P, Huang A, Pfister S, Kool M, Yao TW, Zhang J, Anna B, Brummer T, Gupta N, Nicolaides T, Chan KM, Fang D, Gan H, Hashizume R, Yu C, Schroeder M, Gupta N, Mueller S, James D, Jenkins R, Sarkaria J, Zhang Z. PEDIATRICS LABORATORY RESEARCH. Neuro Oncol 2013. [DOI: 10.1093/neuonc/not186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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He Z, Zhu H, Ding L, Xiao H, Chen D, Xue F. Association of NPP1 polymorphism with postoperative progression of ossification of the posterior longitudinal ligament in Chinese patients. GENETICS AND MOLECULAR RESEARCH 2013; 12:4648-55. [PMID: 24222241 DOI: 10.4238/2013.october.18.3] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Ossification of the posterior longitudinal ligament (OPLL) is a condition of the spine that can cause paralysis by compressing the spinal cord. The aim of this study was to evaluate the possible role of nucleotide pyrophosphatase phosphodiesterase 1 gene (NPP1) polymorphism in the etiology and pathology of the OPLL in Chinese patients. DNA from patients with OPLL (N = 95) and without OPLL (N = 90) were genotyped for 4 NPP1 single-nucleotide polymorphisms (SNPs): A533C, C973T, IVS15-14T→C, and IVS20-11delT. An association study evaluated the relationship between specific SNP genotypes and susceptibility. We also evaluated whether genotypes of these SNPs were associated with disease severity and the probability of disease progression after surgery. The C973T and IVS15-14T SNPs were associated with the existence of the disease. The TT genotypes of C973T and IVS15→14T as well wild-type IVS20 (lack of deletion) were associated with more severe disease. Patients with the T deletion of IVS20 or the AA genotype of A533C had an approximately 3 times greater chance of not having than having disease progression after surgery. We concluded that the 4 SNPs analyzed appeared to have different effects on the etiology and pathology of OPLL. To our knowledge, this study is the first to investigate the relationship between these SNPs and disease progression after surgery. Our findings suggest that the presence of specific genotypes of the IVS20-11delT and A533C SNPs may predict disease outcome after surgical intervention.
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Cui BP, Li P, Sun HJ, Ding L, Zhou YB, Wang JJ, Kang YM, Zhu GQ. Ionotropic glutamate receptors in paraventricular nucleus mediate adipose afferent reflex and regulate sympathetic outflow in rats. Acta Physiol (Oxf) 2013; 209:45-54. [PMID: 23782804 DOI: 10.1111/apha.12125] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Revised: 04/15/2013] [Accepted: 05/28/2013] [Indexed: 12/27/2022]
Abstract
AIM Chemical stimulation of white adipose tissue (WAT) induces adipose afferent reflex (AAR) and results in increases in renal sympathetic nerve activity (RSNA) and mean arterial pressure (MAP). The enhanced AAR contributes to sympathetic activation and hypertension in obesity rats. This study was designed to investigate whether N-methyl-D-aspartate receptors (NMDAR) and non-NMDAR in paraventricular nucleus (PVN) modulate AAR and sympathetic outflow. METHODS Renal sympathetic nerve activity and MAP were recorded in anesthetized rats. AAR was evaluated by the RSNA and MAP responses to the injection of capsaicin into the four sites of right inguinal WAT (8.0 nmol for each site). RESULTS Bilateral PVN microinjection of NMDAR antagonist AP5 or MK-801, or non-NMDAR antagonist CNQX attenuated AAR, RSNA and MAP. AP5 + CNQX caused greater effects than AP5 or CNQX alone and almost abolished AAR. NMDAR agonist NMDA or non-NMDAR agonist AMPA enhanced the AAR, and increased RSNA and MAP, which were prevented by AP5 or CNQX pre-treatment respectively. Casein kinase 2 inhibitor DRB, NR2A antagonist NVP-AAM077 or NR2B antagonist CP-101,606 attenuated AAR, RSNA and MAP. NVP-AAM077 + CP-101,606 caused greater effects than NVP-AAM077 or CP-101,606 alone. Bilateral baroreceptor denervation and vagotomy enhanced AAR, which was abolished by PVN pre-treatment with AP5 + CNQX. Furthermore, AP5 + CNQX abolished the AAR induced by leptin in iWAT. CONCLUSION Both NMDAR and non-NMDAR in the PVN mediate AAR and contribute to the tonic control of sympathetic outflow and blood pressure. CK2, NR2A and NR2B subunits of NMDAR in the PVN are involved in the NMDAR-mediated tonic control of AAR, RSNA and MAP.
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Ding L, Gysemans C, Mathieu C. β-Cell differentiation and regeneration in type 1 diabetes. Diabetes Obes Metab 2013; 15 Suppl 3:98-104. [PMID: 24003926 DOI: 10.1111/dom.12164] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Accepted: 04/24/2013] [Indexed: 12/15/2022]
Abstract
Pancreatic insulin-producing β-cells have traditionally been viewed as a quiescent cell population. However, several recent lines of evidence indicated that like most tissues the β-cell mass is dynamically regulated with ongoing β-cell regeneration throughout life to replenish lost or damaged β-cells. In type 1 diabetes (T1D), this fine-tuned balance between β-cell death and β-cell renewal in the endocrine pancreas is lost and the deficit in β-cell mass is largely caused by autoimmune-mediated apoptosis. Currently, the concept that a cure for T1D will require both re-establishment of immunological tolerance along with replacement or regeneration of a functional β-cell mass in T1D patients is generally accepted. In this study our current understanding of the events directing β-cell replication, β-cell reprogramming from different cell types and β-cell regeneration is reviewed, in view of the results of various immunomodulatory strategies aiming at blocking autoimmune responses against pancreatic β-cells and at improving β-cell mass and function in subjects with T1D.
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Ding L, Lai ACK. An efficient lattice Boltzmann model for indoor airflow and particle transport. JOURNAL OF AEROSOL SCIENCE 2013; 63:10-24. [PMID: 32287375 PMCID: PMC7127572 DOI: 10.1016/j.jaerosci.2013.04.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2012] [Revised: 02/20/2013] [Accepted: 04/11/2013] [Indexed: 06/11/2023]
Abstract
The three-dimensional multiple-relaxation-time LB (MRT-LB) and Lagrangian particle tracking methods were applied to simulate turbulent airflow and particle dispersion in a ventilated room with a partition. The turbulent airflow was simulated by large eddy simulation (LES) using the MRT-LB method with the Smagorinsky model. This method was verified by comparing it with experimental and other numerical results. Good agreement was observed between airflow simulation and experimental data. It is also demonstrated that the LES carried out by the MRT-LB method can produce airflow results very similar to the RNG LES and provide better prediction than the standard and RNG k-ε models. In order to further improve the efficiency of the MRT-LB method, the multi-block grid refinement (MBGR) technique was used. The accuracy and efficiency of the MBGR and the consistency of physical quantities across the interface were investigated. In simulation of particle dispersion in the model room, particles with diameters of 1 and 10 µm were considered. It is shown that this model can successfully capture dispersion characteristics of particles.
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Huang L, Zhang C, Hou Y, Laudon M, She M, Yang S, Ding L, Wang H, Wang Z, He P, Yin W. Blood pressure reducing effects of piromelatine and melatonin in spontaneously hypertensive rats. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2013; 17:2449-2456. [PMID: 24089222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
BACKGROUND Recently, widespread interest has grown regarding melatonin treatment of hypertension including its cardioprotective effects. Studies in rodents indicate that melatonin plays a role in the pathogenesis of hypertension in rats with metabolic syndrome. Piromelatine, a melatonin agonist, serotonin 5-HT-1A and 5-HT-1D agonist and serotonin 5-HT2B antagonist is a multimodal agent with sleep promoting, anti-diabetic, analgesic, anti-neurodegenerative, anxiolytic and antidepressant potential, currently in development for the treatment of insomnia. AIM In this report we assessed the effects of piromelatine and melatonin treatment on blood pressure in spontaneously hypertensive rats (SHR) and normotensive Wistar-Kyoto (WKY) rats. MATERIALS AND METHODS Five groups of 12-wk-old rats (10/group) were treated for 5 weeks with a vehicle, piromelatine (5, 15 and 50 mg/kg BW) and melatonin (10 mg/kg BW) and an age-matched WKY control group. Systolic blood pressure (tail-cuff method) was measured weekly at 9:00 a.m. and at 9:00 p.m. The rats body weight, plasma glucose, insulin, triglyceride, adiponectin, total cholesterol, HDL and LDL/VLDL cholesterol were also measured. RESULTS Our results showed that both piromelatine and melatonin reduced SHR blood pressure significantly both during the morning and the evening. Piromelatine, but not melatonin, also reduced SHR body weight gain and both significantly decreased plasma glucose and insulin levels and increased adiponectin levels. CONCLUSIONS Piromelatine, similar to melatonin, has an antihypertensive effect and also attenuates body weight, improves metabolic profiles and might be useful in the treatment of hypertension and the metabolic syndrome.
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Yao Y, Ding L, Chen W, Guo J, Bao J, Shi R, Huang W, Zhang S, Wong T. The training and learning process of transseptal puncture using a modified technique. Europace 2013; 15:1784-90. [DOI: 10.1093/europace/eut078] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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Adare A, Afanasiev S, Aidala C, Ajitanand NN, Akiba Y, Akimoto R, Al-Bataineh H, Al-Ta'ani H, Alexander J, Angerami A, Aoki K, Apadula N, Aphecetche L, Aramaki Y, Armendariz R, Aronson SH, Asai J, Asano H, Aschenauer EC, Atomssa ET, Averbeck R, Awes TC, Azmoun B, Babintsev V, Bai M, Baksay G, Baksay L, Baldisseri A, Bannier B, Barish KN, Barnes PD, Bassalleck B, Basye AT, Bathe S, Batsouli S, Baublis V, Baumann C, Baumgart S, Bazilevsky A, Belikov S, Belmont R, Bennett R, Berdnikov A, Berdnikov Y, Bickley AA, Bing X, Blau DS, Boissevain JG, Bok JS, Borel H, Boyle K, Brooks ML, Buesching H, Bumazhnov V, Bunce G, Butsyk S, Camacho CM, Campbell S, Castera P, Chang BS, Chang WC, Charvet JL, Chen CH, Chernichenko S, Chi CY, Chiba J, Chiu M, Choi IJ, Choi JB, Choi S, Choudhury RK, Christiansen P, Chujo T, Chung P, Churyn A, Chvala O, Cianciolo V, Citron Z, Cleven CR, Cole BA, Comets MP, Connors M, Constantin P, Csanád M, Csörgő T, Dahms T, Dairaku S, Danchev I, Das K, Datta A, Daugherity MS, David G, Deaton MB, Dehmelt K, Delagrange H, Denisov A, d'Enterria D, Deshpande A, Desmond EJ, Dharmawardane KV, Dietzsch O, Ding L, Dion A, Donadelli M, Drapier O, Drees A, Drees KA, Dubey AK, Durham JM, Durum A, Dutta D, Dzhordzhadze V, D'Orazio L, Edwards S, Efremenko YV, Egdemir J, Ellinghaus F, Emam WS, Engelmore T, Enokizono A, En'yo H, Esumi S, Eyser KO, Fadem B, Fields DE, Finger M, Finger M, Fleuret F, Fokin SL, Fraenkel Z, Frantz JE, Franz A, Frawley AD, Fujiwara K, Fukao Y, Fusayasu T, Gadrat S, Gainey K, Gal C, Garishvili A, Garishvili I, Glenn A, Gong H, Gong X, Gonin M, Gosset J, Goto Y, Granier de Cassagnac R, Grau N, Greene SV, Grosse Perdekamp M, Gunji T, Guo L, Gustafsson HÅ, Hachiya T, Hadj Henni A, Haegemann C, Haggerty JS, Hahn KI, Hamagaki H, Hamblen J, Han R, Hanks J, Harada H, Hartouni EP, Haruna K, Hashimoto K, Haslum E, Hayano R, He X, Heffner M, Hemmick TK, Hester T, Hiejima H, Hill JC, Hobbs R, Hohlmann M, Hollis RS, Holzmann W, Homma K, Hong B, Horaguchi T, Hori Y, Hornback D, Huang S, Ichihara T, Ichimiya R, Ide J, Iinuma H, Ikeda Y, Imai K, Imrek J, Inaba M, Inoue Y, Iordanova A, Isenhower D, Isenhower L, Ishihara M, Isobe T, Issah M, Isupov A, Ivanischev D, Jacak BV, Javani M, Jia J, Jiang X, Jin J, Jinnouchi O, Johnson BM, Joo KS, Jouan D, Jumper DS, Kajihara F, Kametani S, Kamihara N, Kamin J, Kaneta M, Kaneti S, Kang BH, Kang JH, Kang JS, Kanou H, Kapustinsky J, Karatsu K, Kasai M, Kawall D, Kawashima M, Kazantsev AV, Kempel T, Khanzadeev A, Kijima KM, Kikuchi J, Kim BI, Kim C, Kim DH, Kim DJ, Kim E, Kim EJ, Kim HJ, Kim KB, Kim SH, Kim YJ, Kim YK, Kinney E, Kiriluk K, Kiss Á, Kistenev E, Kiyomichi A, Klatsky J, Klay J, Klein-Boesing C, Kleinjan D, Kline P, Kochenda L, Kochetkov V, Komatsu Y, Komkov B, Konno M, Koster J, Kotchetkov D, Kotov D, Kozlov A, Král A, Kravitz A, Krizek F, Kubart J, Kunde GJ, Kurihara N, Kurita K, Kurosawa M, Kweon MJ, Kwon Y, Kyle GS, Lacey R, Lai YS, Lajoie JG, Layton D, Lebedev A, Lee B, Lee DM, Lee J, Lee K, Lee KB, Lee KS, Lee MK, Lee SH, Lee SR, Lee T, Leitch MJ, Leite MAL, Leitgab M, Leitner E, Lenzi B, Lewis B, Li X, Liebing P, Lim SH, Linden Levy LA, Liška T, Litvinenko A, Liu H, Liu MX, Love B, Luechtenborg R, Lynch D, Maguire CF, Makdisi YI, Makek M, Malakhov A, Malik MD, Manion A, Manko VI, Mannel E, Mao Y, Mašek L, Masui H, Masumoto S, Matathias F, McCumber M, McGaughey PL, McGlinchey D, McKinney C, Means N, Mendoza M, Meredith B, Miake Y, Mibe T, Mignerey AC, Mikeš P, Miki K, Miller TE, Milov A, Mioduszewski S, Mishra DK, Mishra M, Mitchell JT, Mitrovski M, Miyachi Y, Miyasaka S, Mohanty AK, Moon HJ, Morino Y, Morreale A, Morrison DP, Motschwiller S, Moukhanova TV, Mukhopadhyay D, Murakami T, Murata J, Nagae T, Nagamiya S, Nagata Y, Nagle JL, Naglis M, Nagy MI, Nakagawa I, Nakamiya Y, Nakamura KR, Nakamura T, Nakano K, Nattrass C, Nederlof A, Newby J, Nguyen M, Nihashi M, Niida T, Norman BE, Nouicer R, Novitzky N, Nyanin AS, O'Brien E, Oda SX, Ogilvie CA, Ohnishi H, Oka M, Okada K, Omiwade OO, Onuki Y, Oskarsson A, Ouchida M, Ozawa K, Pak R, Pal D, Palounek APT, Pantuev V, Papavassiliou V, Park BH, Park IH, Park J, Park SK, Park WJ, Pate SF, Patel L, Pei H, Peng JC, Pereira H, Peresedov V, Peressounko DY, Petti R, Pinkenburg C, Pisani RP, Proissl M, Purschke ML, Purwar AK, Qu H, Rak J, Rakotozafindrabe A, Ravinovich I, Read KF, Rembeczki S, Reuter M, Reygers K, Reynolds R, Riabov V, Riabov Y, Richardson E, Roach D, Roche G, Rolnick SD, Romana A, Rosati M, Rosen CA, Rosendahl SSE, Rosnet P, Rukoyatkin P, Ružička P, Rykov VL, Sahlmueller B, Saito N, Sakaguchi T, Sakai S, Sakashita K, Sakata H, Samsonov V, Sano M, Sano S, Sarsour M, Sato S, Sato T, Sawada S, Sedgwick K, Seele J, Seidl R, Semenov AY, Semenov V, Sen A, Seto R, Sharma D, Shein I, Shevel A, Shibata TA, Shigaki K, Shimomura M, Shoji K, Shukla P, Sickles A, Silva CL, Silvermyr D, Silvestre C, Sim KS, Singh BK, Singh CP, Singh V, Skutnik S, Slunečka M, Soldatov A, Soltz RA, Sondheim WE, Sorensen SP, Soumya M, Sourikova IV, Sparks NA, Staley F, Stankus PW, Stenlund E, Stepanov M, Ster A, Stoll SP, Sugitate T, Suire C, Sukhanov A, Sun J, Sziklai J, Tabaru T, Takagi S, Takagui EM, Takahara A, Taketani A, Tanabe R, Tanaka Y, Taneja S, Tanida K, Tannenbaum MJ, Tarafdar S, Taranenko A, Tarján P, Tennant E, Themann H, Thomas TL, Todoroki T, Togawa M, Toia A, Tojo J, Tomášek L, Tomášek M, Tomita Y, Torii H, Towell RS, Tram VN, Tserruya I, Tsuchimoto Y, Tsuji T, Vale C, Valle H, van Hecke HW, Vargyas M, Vazquez-Zambrano E, Veicht A, Velkovska J, Vértesi R, Vinogradov AA, Virius M, Vossen A, Vrba V, Vznuzdaev E, Wagner M, Walker D, Wang XR, Watanabe D, Watanabe K, Watanabe Y, Watanabe YS, Wei F, Wei R, Wessels J, White SN, Winter D, Wolin S, Wood JP, Woody CL, Wright RM, Wysocki M, Xie W, Yamaguchi YL, Yamaura K, Yang R, Yanovich A, Yasin Z, Ying J, Yokkaichi S, You Z, Young GR, Younus I, Yushmanov IE, Zajc WA, Zaudtke O, Zelenski A, Zhang C, Zhou S, Zimányi J, Zolin L. Medium modification of jet fragmentation in Au+Au collisions at √[s(NN)]=200 GeV measured in direct photon-hadron correlations. PHYSICAL REVIEW LETTERS 2013; 111:032301. [PMID: 23909311 DOI: 10.1103/physrevlett.111.032301] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Indexed: 06/02/2023]
Abstract
The jet fragmentation function is measured with direct photon-hadron correlations in p+p and Au+Au collisions at √[s(NN)]=200 GeV. The p(T) of the photon is an excellent approximation to the initial p(T) of the jet and the ratio z(T)=p(T)(h)/p(T)(γ) is used as a proxy for the jet fragmentation function. A statistical subtraction is used to extract the direct photon-hadron yields in Au+Au collisions while a photon isolation cut is applied in p+p. I(AA), the ratio of hadron yield opposite the photon in Au+Au to that in p+p, indicates modification of the jet fragmentation function. Suppression, most likely due to energy loss in the medium, is seen at high z(T). The associated hadron yield at low z(T) is enhanced at large angles. Such a trend is expected from redistribution of the lost energy into increased production of low-momentum particles.
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Bax HI, Freeman AF, Ding L, Hsu AP, Marciano B, Kristosturyan E, Jancel T, Spalding C, Pechacek J, Olivier KN, Barnhart LA, Boris L, Frein C, Claypool RJ, Anderson V, Zerbe CS, Holland SM, Sampaio EP. Interferon alpha treatment of patients with impaired interferon gamma signaling. J Clin Immunol 2013; 33:991-1001. [PMID: 23512243 PMCID: PMC4136390 DOI: 10.1007/s10875-013-9882-5] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2012] [Accepted: 02/27/2013] [Indexed: 11/27/2022]
Abstract
Patients with deficiency in the interferon gamma receptor (IFN-γR) are unable to respond properly to IFN-γ and develop severe infections with nontuberculous mycobacteria (NTM). IFN-γ and IFN-α are known to signal through STAT1 and activate many downstream effector genes in common. Therefore, we added IFN-α for treatment of patients with disseminated mycobacterial disease in an effort to complement their IFN-γ signaling defect. We treated four patients with IFN-γR deficiency with adjunctive IFN-α therapy in addition to best available antimicrobial therapy, with or without IFN-γ, depending on the defect. During IFN-α treatment, ex vivo induction of IFN target genes was detected. In addition, IFN-α driven gene expression in patients' cells and mycobacteria induced cytokine response were observed in vitro. Clinical responses varied in these patients. IFN-α therapy was associated with either improvement or stabilization of disease. In no case was disease exacerbated. In patients with profoundly impaired IFN-γ signaling who have refractory infections, IFN-α may have adjunctive anti-mycobacterial effects.
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Ding L, Nguyen G, Yoshizumi T. SU-C-144-03: Validation of Ceiling Shielding in CT/PET Room with RADEYE. Med Phys 2013. [DOI: 10.1118/1.4813992] [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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Liu J, Ding L, Wei J, Li Y. Influences of F-strainMycoplasma gallisepticum vaccine on productive and reproductive performance of commercial parent broiler chicken breeders on a multi-age farm. Poult Sci 2013; 92:1535-42. [DOI: 10.3382/ps.2012-02999] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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243
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Ding L, Chino J, Cai J, Steffey B, Meltsner S, Yang Y, Craciunescu O. SU-E-J-88: Dose Summation Between Multimodality Treatments for Cervical Cancer. Med Phys 2013. [DOI: 10.1118/1.4814300] [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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Xu ZQ, Broza YY, Ionsecu R, Tisch U, Ding L, Liu H, Song Q, Pan YY, Xiong FX, Gu KS, Sun GP, Chen ZD, Leja M, Haick H. A nanomaterial-based breath test for distinguishing gastric cancer from benign gastric conditions. Br J Cancer 2013; 108:941-50. [PMID: 23462808 PMCID: PMC3590679 DOI: 10.1038/bjc.2013.44] [Citation(s) in RCA: 163] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Background: Upper digestive endoscopy with biopsy and histopathological evaluation of the biopsy material is the standard method for diagnosing gastric cancer (GC). However, this procedure may not be widely available for screening in the developing world, whereas in developed countries endoscopy is frequently used without major clinical gain. There is a high demand for a simple and non-invasive test for selecting the individuals at increased risk that should undergo the endoscopic examination. Here, we studied the feasibility of a nanomaterial-based breath test for identifying GC among patients with gastric complaints. Methods: Alveolar exhaled breath samples from 130 patients with gastric complaints (37 GC/32 ulcers / 61 less severe conditions) that underwent endoscopy/biopsy were analyzed using nanomaterial-based sensors. Predictive models were built employing discriminant factor analysis (DFA) pattern recognition, and their stability against possible confounding factors (alcohol/tobacco consumption; Helicobacter pylori) was tested. Classification success was determined (i) using leave-one-out cross-validation and (ii) by randomly blinding 25% of the samples as a validation set. Complementary chemical analysis of the breath samples was performed using gas chromatography coupled with mass spectrometry. Results: Three DFA models were developed that achieved excellent discrimination between the subpopulations: (i) GC vs benign gastric conditions, among all the patients (89% sensitivity; 90% specificity); (ii) early stage GC (I and II) vs late stage (III and IV), among GC patients (89% sensitivity; 94% specificity); and (iii) ulcer vs less severe, among benign conditions (84% sensitivity; 87% specificity). The models were insensitive against the tested confounding factors. Chemical analysis found that five volatile organic compounds (2-propenenitrile, 2-butoxy-ethanol, furfural, 6-methyl-5-hepten-2-one and isoprene) were significantly elevated in patients with GC and/or peptic ulcer, as compared with less severe gastric conditions. The concentrations both in the room air and in the breath samples were in the single p.p.b.v range, except in the case of isoprene. Conclusion: The preliminary results of this pilot study could open a new and promising avenue to diagnose GC and distinguish it from other gastric diseases. It should be noted that the applied methods are complementary and the potential marker compounds identified by gas-chromatography/mass spectrometry are not necessarily responsible for the differences in the sensor responses. Although this pilot study does not allow drawing far-reaching conclusions, the encouraging preliminary results presented here have initiated a large multicentre clinical trial to confirm the observed patterns for GC and benign gastric conditions.
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Huang NY, Ding L, Wang J, Zhang QY, Liu X, Lin HD, Hua WY. Pharmacokinetics, safety and tolerability of pirfenidone and its major metabolite after single and multiple oral doses in healthy Chinese subjects under fed conditions. Drug Res (Stuttg) 2013; 63:388-95. [PMID: 23580109 DOI: 10.1055/s-0033-1341478] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
BACKGROUND AND OBJECTIVE Pirfenidone is a promising antifibrotic agent with therapeutic potential for idiopathic pulmonary fibrosis. This study aimed to evaluate the pharmacokinetics and urinary excretion of pirfenidone and its major metabolite 5-carboxy-pirfenidone in healthy Chinese subjects under fed conditions. METHODS 20 healthy subjects of either sex were recruited in this randomized, single-center, and open-label, single ascending doses (200, 400, and 600 mg) and multiple doses (400 mg, 3 times daily) study. Safety was assessed by adverse events, ECGs, vital signs, and clinical laboratory parameters. Blood and urine samples were analyzed with a validated LC/MS method. RESULTS AND CONCLUSIONS Pirfenidone was safe and well tolerated. After single-dose administration, pirfenidone was rapidly absorbed with a mean Tmax of 1.8-2.2 h and a mean t1/2 of 2.1-2.4 h. 5-carboxy-pirfenidone was rapidly formed with a mean Tmax of 1.5-2.2 h and a mean t1/2 of 2.1-2.6 h. Cmax and AUC for both parent and metabolite were dose proportional over the 200-600 mg dose range. No gender effect was found. In the steady state, the accumulation index (R) estimated for the 3 dosing intervals ranged from 1.1 to 1.5 for both pirfenidone and 5-carboxy-pirfenidone, indicating that the exposure of pirfenidone and 5-carboxy-pirfenidone increased slightly with repeated dosing, but t1/2 and CL/F remained unchanged. Metabolism is the primary mechanism of drug clearance of pirfenidone. About 87.76% of the administered pirfenidone was excreted in urine in the form of 5-carboxy-pirfenidone, while only 0.6159% of the administered pirfenidone was detected as the unchanged form in urine.
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Liu Z, Ding L, Zhong S, Cao X, Jiang L, Duan H. Pharmacokinetics of a new immediate-release compound omeprazole capsule and its comparison with the enteric-coated formulation under fasting and fed conditions. Drug Res (Stuttg) 2013; 63:370-5. [PMID: 23558602 DOI: 10.1055/s-0033-1341477] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The present study was conducted to describe the pharmacokinetic profile of immediate-release compound omeprazole capsule and compare it with the enteric-coated formulation under fasting and fed condition.This study was designed to phase I, open-label, randomized, 3-part clinical trial. 12 subjects in part one received single doses (20 mg and 40 mg) and repeated doses (20 mg). Different 30 subjects in part 2 (fasting condition) and part 3 (fed condition) received either compound omeprazole capsule (40 mg) or delayed-release omeprazole (40 mg) separated by 7 days.Compound omeprazole capsule showed dose non-proportionality in the range from 20 mg to 40 mg. The AUC0-t of 20 mg omeprazole is 78% higher after repeated doses. The C max was higher and T max was lower for compound omeprazole capsule than delayed-release omeprazole. 90% CIs for AUC0-t of the 2 periods (test/reference) under fasting and fed conditions were 106.3% (102.2%~109.2%) and 104.1% (93.4%~109.6%), respectively. Presence of food reduced the rate (C max) and extent (AUC0-t) of systemic exposure of the test and reference formulations from 1 462 to 777 ng · mL-1, 1 055 to 602 ng · mL-1, 2 597 to 1 852 ng · h · mL-1 and 2 454 to 1 873 ng · h · mL-1, respectively.Exposed dose of omeprazole in subjects with compound omeprazole capsule was time- and dose-dependent. Compared with delayed-release omeprazole, compound omeprazole capsule had rapid but similar degree of absorption of omeprazole.
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Miloslavsky E, Specks U, Merkel P, Seo P, Spiera R, Langford C, Hoffman G, Kallenberg C, St. Clair W, Tchao N, Ding L, Ikle D, Jepson B, Brunetta P, Stone J. Safety of remission induction with rituximab versus cyclophosphamide in patients 65 and older with severe ANCA-associated vasculitis. Presse Med 2013. [DOI: 10.1016/j.lpm.2013.02.302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Caldarelli A, Müller JP, Paskowski-Rogacz M, Herrmann K, Bauer R, Koch S, Heninger AK, Krastev D, Ding L, Kasper S, Fischer T, Brodhun M, Böhmer FD, Buchholz F. A genome-wide RNAi screen identifies proteins modulating aberrant FLT3-ITD signaling. Leukemia 2013; 27:2301-10. [PMID: 23508117 PMCID: PMC3865536 DOI: 10.1038/leu.2013.83] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2012] [Revised: 02/25/2013] [Accepted: 03/06/2013] [Indexed: 12/22/2022]
Abstract
Fms-like tyrosine kinase-3 is a commonly mutated gene in acute myeloid leukemia, with about one-third of patients carrying an internal-tandem duplication of the juxtamembrane domain in the receptor (FLT3-ITD). FLT3-ITD exhibits altered signaling quality, including aberrant activation of STAT5. To identify genes affecting FLT3-ITD-mediated STAT5 signaling, we performed an esiRNA-based RNAi screen utilizing a STAT5-driven reporter assay. Knockdowns that caused reduced FLT3-ITD-mediated STAT5 signaling were enriched for genes encoding proteins involved in protein secretion and intracellular protein transport, indicating that modulation of protein transport processes could potentially be used to reduce constitutive STAT5 signaling in FLT3-ITD-positive cells. The relevance of KDELR1, a component involved in the Golgi-ER retrograde transport, was further analyzed. In FLT3-ITD-expressing leukemic MV4-11 cells, downregulation of KDELR1 resulted in reduced STAT5 activation, proliferation and colony-forming capacity. Stable shRNA-mediated depletion of KDELR1 in FLT3-ITD-expressing 32D cells likewise resulted in reduced STAT5 signaling and cell proliferation. Importantly, these cells also showed a reduced capacity to generate a leukemia-like disease in syngeneic C3H/HeJ mice. Together our data suggest intracellular protein transport as a potential target for FLT3-ITD driven leukemias, with KDELR1 emerging as a positive modulator of oncogenic FLT3-ITD activity.
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Walter MJ, Shen D, Shao J, Ding L, White BS, Kandoth C, Miller CA, Niu B, McLellan MD, Dees ND, Fulton R, Elliot K, Heath S, Grillot M, Westervelt P, Link DC, DiPersio JF, Mardis E, Ley TJ, Wilson RK, Graubert TA. Clonal diversity of recurrently mutated genes in myelodysplastic syndromes. Leukemia 2013; 27:1275-82. [PMID: 23443460 DOI: 10.1038/leu.2013.58] [Citation(s) in RCA: 238] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Recent studies suggest that most cases of myelodysplastic syndrome (MDS) are clonally heterogeneous, with a founding clone and multiple subclones. It is not known whether specific gene mutations typically occur in founding clones or subclones. We screened a panel of 94 candidate genes in a cohort of 157 patients with MDS or secondary acute myeloid leukemia (sAML). This included 150 cases with samples obtained at MDS diagnosis and 15 cases with samples obtained at sAML transformation (8 were also analyzed at the MDS stage). We performed whole-genome sequencing (WGS) to define the clonal architecture in eight sAML genomes and identified the range of variant allele frequencies (VAFs) for founding clone mutations. At least one mutation or cytogenetic abnormality was detected in 83% of the 150 MDS patients and 17 genes were significantly mutated (false discovery rate ≤0.05). Individual genes and patient samples displayed a wide range of VAFs for recurrently mutated genes, indicating that no single gene is exclusively mutated in the founding clone. The VAFs of recurrently mutated genes did not fully recapitulate the clonal architecture defined by WGS, suggesting that comprehensive sequencing may be required to accurately assess the clonal status of recurrently mutated genes in MDS.
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Ding L, Deng W, Wang Q, Ma X, Li M, Han Y, Li T. 2675 – Pattern recognition memory in first-episode treat-naive deficit and nondeficit schizophrenia patients. Eur Psychiatry 2013. [DOI: 10.1016/s0924-9338(13)77297-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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