551
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Shang X, Vasudevan SA, Yu Y, Ge N, Ludwig AD, Wesson CL, Wang K, Burlingame SM, Zhao YJ, Rao PH, Lu X, Russell HV, Okcu MF, Hicks MJ, Shohet JM, Donehower LA, Nuchtern JG, Yang J. Dual-specificity phosphatase 26 is a novel p53 phosphatase and inhibits p53 tumor suppressor functions in human neuroblastoma. Oncogene 2010; 29:4938-46. [PMID: 20562916 DOI: 10.1038/onc.2010.244] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Chemoresistance is a major cause of treatment failure and poor outcome in neuroblastoma. In this study, we investigated the expression and function of dual-specificity phosphatase 26 (DUSP26), also known as mitogen-activated protein kinase phophatase-8, in human neuroblastoma. We found that DUSP26 was expressed in a majority of neuroblastoma cell lines and tissue specimens. Importantly, we found that DUSP26 promotes the resistance of human neuroblastoma to doxorubicin-induced apoptosis by acting as a p53 phosphatase to downregulate p53 tumor suppressor function in neuroblastoma cells. Inhibiting DUSP26 expression in the IMR-32 neuroblastoma cell line enhanced doxorubicin-induced p53 phosphorylation at Ser20 and Ser37, p21, Puma, Bax expression as well as apoptosis. In contrast, DUSP26 overexpression in the SK-N-SH cell line inhibited doxorubicin-induced p53 phosphorylation at Ser20 and Ser37, p21, Puma, Bax expression and apoptosis. Using in vitro and in vivo assays, we found that DUSP26 binds to p53 and dephosphorylates p53 at Ser20 and Ser37. In this report, we show that DUSP26 functions as a p53 phosphatase, which suppresses downstream p53 activity in response to genotoxic stress. This suggests that inhibition of this phosphatase may increase neuroblastoma chemosensitivity and DUSP26 is a novel therapeutic target for this aggressive pediatric malignancy.
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552
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Miao Y, Lu X, Qiu Y, Jiang J, Lin Y. A multivariate analysis of prognostic factors for health-related quality of life in patients with surgically managed meningioma. J Clin Neurosci 2010; 17:446-9. [PMID: 20138525 DOI: 10.1016/j.jocn.2009.07.111] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2009] [Revised: 07/18/2009] [Accepted: 07/20/2009] [Indexed: 11/16/2022]
Abstract
The objective of this study was to examine the prognostic significance of health-related quality of life (HQOL) parameters combined with baseline clinical factors in patients undergoing neurosurgery for treatment of meningioma. A total of 147 patients (61 male, 86 female; mean age 43 years, range 5-77 years) who underwent resection of a meningioma between January 2002 and December 2004 were studied. HQOL was evaluated using a modified questionnaire based on the World Health Organization Quality of Life-100 Scale and the Karnofsky Performance Scale. The relationships between HQOL and clinical history, radiological findings, extent of resection, histological grade and recurrence were investigated using multivariate analysis. The mean HQOL score was 73.94+/-1.79 for preoperative patients with meningioma, 84.88+/-2.14 for postoperative patients, and 91.13+/-1.61 for healthy controls. HQOL for patients with meningioma was significantly lower than that for normal controls (P<0.001), and postoperative patients had a more satisfactory HQOL than preoperative (P<0.05). Cox proportional hazards analysis showed that significant predictors of health-related quality of life were tumor size, extent of surgical excision, and histologic grade. Multivariate backward logistic regression yielded the regression equation HQOL=119.1097 - 1.5002X(3) - 8.6650X(6) - 10.4210X(7) (R=0.7466; where X(3) is tumor size, X(6) is extent of surgical excision, and X(7) is the histologic grade of the tumor). This equation can be used preoperatively to predict the HQOL of meningioma patients after neurosurgery. A specialized HQOL questionnaire for patients with meningioma provides useful information when planning the operative procedure, and may make it more likely that patients have a satisfactory HQOL after surgery.
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553
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Cheng C, Zhao L, Wolanski M, Allgower C, Zhao Q, James J, Dikeman K, Mills M, Li M, Frye D, Lu X, Srivastava S, Das I, Johnstone P. SU-GG-I-03: Implications for Proton Therapy Treatment Planning of Tissue Characterization Curves from Different CT Scanners. Med Phys 2010. [DOI: 10.1118/1.3468036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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554
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Court L, Seco J, Lu X, Ebe K, Mayo C, Ionascu D, Winey B, Giakoumakis N, Aristophanous M, Berbeco R, Rottmann J, Bogdanov M, Schofield D, Lingos T. SU-GG-T-289: A Lifelike Breathing Phantom and Model Tumor for IGRT and 4D Dose Calculation Applications. Med Phys 2010. [DOI: 10.1118/1.3468683] [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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555
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Valdes AM, Deary IJ, Gardner J, Kimura M, Lu X, Spector TD, Aviv A, Cherkas LF. Leukocyte telomere length is associated with cognitive performance in healthy women. Neurobiol Aging 2010; 31:986-92. [PMID: 18718693 PMCID: PMC2876308 DOI: 10.1016/j.neurobiolaging.2008.07.012] [Citation(s) in RCA: 91] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2008] [Revised: 05/27/2008] [Accepted: 07/13/2008] [Indexed: 10/21/2022]
Abstract
BACKGROUND Age-related cognitive decline begins in mid-life and continues with advancing age. Leukocyte telomere length (LTL) shortens with age, and inflammation and oxidative stress enhance this process. Shorter LTL is associated with dementia. METHODS The relationship between cognitive function and LTL was investigated in a cross-sectional study of 382 women (mean age 50.6 years, range 19-78), not diagnosed with any form of dementia or cognitive impairment, from the TwinsUK cohort using six tests from the Cambridge neuropsychological test automated battery (CANTAB). RESULTS After adjusting for age and estimated prior intellectual ability, we observed significant correlations of LTL with episodic memory and associated learning (PAL, p=0.032), recognition memory for non-verbal patterns (DMS, p=0.007), and working memory capacity (SSP, p=0.003). In pairs of twins discordant for LTL the twin with longer telomeres also had significantly better DMS (p<0.05) and SSP (p<0.013) scores than their co-twin with shorter telomeres. The correlations between these two scores and LTL was significant both in women over the median mean age and in those below the median age, and remained significant after statistical adjustment for potential confounders. CONCLUSIONS Leukocyte telomere length correlates with a subset of measures of cognitive performance, suggesting that it might be a biomarker of cognitive aging in women before the onset of dementia.
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556
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MacDonald L, Luo W, Lu X, Wang C, Rogers J. TH-D-201B-09: Low Dose Lesion Contrast on PEM Flex Solo II. Med Phys 2010. [DOI: 10.1118/1.3469568] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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557
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Court L, Seco J, Lu X, Ebe K, Mayo C, Ionascu D, Winey B, Giakoumakis N, Aristophanous M, Berbeco R, Rottmann J, Bogdanov M, Schofield D, Lingos T. WE-E-BRA-01: Treatment of Moving Tumors: An Inter-Modality Comparison under Realistic Clinical Conditions. Med Phys 2010. [DOI: 10.1118/1.3469423] [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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558
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Lu X, Alshemali S, de Wynter EA, Dickinson AM. Mesenchymal stem cells from CD34−human umbilical cord blood. Transfus Med 2010; 20:178-84. [DOI: 10.1111/j.1365-3148.2009.00981.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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559
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Varella-Garcia M, Cho Y, Lu X, Barón AE, Terracciano L, Camidge DR, Bunn PA, Franklin WA, Cappuzzo F, Doebele RC. ALK gene rearrangements in unselected caucasians with non-small cell lung carcinoma (NSCLC). J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.10533] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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560
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Hu J, Lu X, Foord J. Nanodiamond pretreatment for the modification of diamond electrodes by platinum nanoparticles. Electrochem commun 2010. [DOI: 10.1016/j.elecom.2010.03.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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561
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Lu X, Dai H, Ding J. Con-specific neighbours may enhance compensation capacity in an invasive plant. PLANT BIOLOGY (STUTTGART, GERMANY) 2010; 12:445-452. [PMID: 20522180 DOI: 10.1111/j.1438-8677.2009.00247.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Facilitation, both by inter- and intra-specific neighbours, is known to be an important process in structuring plant communities. However, only a small number of experiments have been reported on facilitation in plant invasions, especially between invasive con-specific individuals. Here, we focus on how con-specific neighbours of the invasive alien plant alligator weed affect the tolerance of alligator weed to herbivory by the introduced biological control agent, Agasicles hygrophila. We conducted greenhouse and garden experiments in which invasive plant density and herbivory intensity (artificial clipping and real herbivory) were manipulated. In the greenhouse experiment, artificial clipping significantly reduced plant biomass when plants were grown individually, but when con-specific neighbours were present in the same pot, biomass was not significantly different from control plants. Similarly, when compared to control plants, plants that were subjected to herbivory by A. hygrophila produced more biomass when grown with two con-specific neighbours than when grown alone. Real herbivory also resulted in an increased number of vegetative buds, and again when two con-specific neighbours were present this effect was increased (a 55.3% increase in buds when there was no neighbour, but a 111.6% increase in buds when two con-specific neighbours were present). In the garden experiment, in which plants were grown at high density (6 plants per pot), alligator weed fully recovered from defoliation caused by insects at levels from 20-30% to 100%. Our results indicate that the con-specific association may increase the compensatory ability to cope with intense damage in this invasive plant.
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562
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Zha FX, Li MS, Shao J, Yin WT, Zhou SM, Lu X, Guo QT, Ye ZH, Li TX, Ma HL, Zhang B, Shen XC. Femtosecond laser-drilling-induced HgCdTe photodiodes. OPTICS LETTERS 2010; 35:971-973. [PMID: 20364187 DOI: 10.1364/ol.35.000971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Femtosecond-laser drilling may induce holes in HgCdTe with morphology similar to that induced by ion-milling in loophole technique. So-formed hole structures are proven to be pn junction diodes by the laser beam induced current characterization as well as the conductivity measurement. Transmission and photoluminescence spectral measurements on a n-type dominated hole-array structure give rise to different results from those of an ion-milled sample.
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563
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Lu X, Kakkar V. The Role of Heat Shock Protein (HSP) in Atherosclerosis: Pathophysiology and Clinical Opportunities. Curr Med Chem 2010; 17:957-73. [DOI: 10.2174/092986710790820688] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2009] [Accepted: 01/25/2010] [Indexed: 11/22/2022]
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564
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Lu X. Study on the prevalence of human bocavirus among children with acute respiratory tract infection in Guangdong, China. Int J Infect Dis 2010. [DOI: 10.1016/j.ijid.2010.02.652] [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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565
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Lu X, Wang Q, Zhuang W, Lin G. Detection and clinical characterization of WU polyomavirus with acute respiratory tract infection in children, Guangdong of China. Int J Infect Dis 2010. [DOI: 10.1016/j.ijid.2010.02.670] [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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566
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Miao Y, Qiu Y, Lin Y, Miao Z, Zhang J, Lu X. Protection by pyruvate against glutamate neurotoxicity is mediated by astrocytes through a glutathione-dependent mechanism. Mol Biol Rep 2010; 38:3235-42. [DOI: 10.1007/s11033-010-9998-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2009] [Accepted: 02/08/2010] [Indexed: 12/28/2022]
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567
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LeMaire S, Lu X, Hou X, Russell L, Milewicz D, Belmont J, Adams G, Shen Y, Coselli J. Abstracts of the Fifth Annual Academic Surgical Congress of the Association for Academic Surgery and Society of University Surgeons. San Antonio, Texas, USA. February 3-5, 2010. J Surg Res 2010; 158:171-424. [PMID: 20105706 DOI: 10.1016/j.jss.2009.11.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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568
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Lu X, Masic A, Li Y, Shin Y, Liu Q, Zhou Y. The PI3K/Akt pathway inhibits influenza A virus-induced Bax-mediated apoptosis by negatively regulating the JNK pathway via ASK1. J Gen Virol 2010; 91:1439-49. [DOI: 10.1099/vir.0.018465-0] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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569
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Lu X, Robertson AE, Byamukama EZ, Nutter FW. Evaluating the Importance of Stem Canker of Soybean in Iowa. PLANT DISEASE 2010; 94:167-173. [PMID: 30754259 DOI: 10.1094/pdis-94-2-0167] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The relative importance of stem canker of soybean in Iowa compared with other soybean diseases present in the state was assessed using data collected from over 3,400 soybean fields sampled in the Iowa Soybean Disease Survey that was conducted from 2005 to 2007. Symptomatic plant tissues from soybean plants with stem canker symptoms were cultured on acidified potato dextrose agar. The prevalence of stem canker on soybean in 2005 in Iowa was 2.6%; the disease was not detected in 2006 and 2007. In 2005, 63 isolates with Diaporthe/Phomopsis characteristics were collected. To identify isolates to fungal species and variety, single-spored isolates were subjected to polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) and sequencing of the internal transcribed spacer (ITS) region. Fourteen isolates were identified as D. phaseolorum var. caulivora (northern stem canker) and 49 as Phomopsis longicolla. To quantify and compare the aggressiveness of D. phaseolorum var. caulivora isolates collected in Iowa, nine isolates were arbitrarily selected for components analysis. Incubation period, rate of lesion expansion, final lesion length, and time to plant death for each isolate were quantified. Significant differences in components of aggressiveness were detected among the nine isolates. Results from this work suggest stem canker is a minor disease of soybean in Iowa.
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570
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Zheng S, Song M, Wu L, Yang S, Shen J, Lu X, Du J, Wang W. China: Public Health Genomics. Public Health Genomics 2010; 13:269-75. [DOI: 10.1159/000240969] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2009] [Accepted: 05/26/2009] [Indexed: 11/19/2022] Open
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571
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Mitsukawa K, Lu X, Bartfai T. Galanin, galanin receptors, and drug targets. EXPERIENTIA SUPPLEMENTUM (2012) 2010; 102:7-23. [PMID: 21299058 DOI: 10.1007/978-3-0346-0228-0_2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Galanin, a neuropeptide widely expressed in the central and peripheral nervous systems and in the endocrine system, has been shown to regulate numerous physiological and pathological processes through interactions with three G-protein-coupled receptors, GalR1 through GalR3. Over the past decade, some of the receptor subtype-specific effects have been elucidated through pharmacological studies using subtype selective ligands, as well as through molecular approaches involving knockout animals. In this chapter, we summarize the current data which constitute the basis of targeting GalR1, GalR2, and GalR3 for the treatment of various human diseases and pathological conditions, including seizure, Alzheimer's disease, mood disorders, anxiety, alcohol intake in addiction, metabolic diseases, pain and solid tumors.
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572
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Lu X, Yin J, Yin Y, Deng S, Luo S. Knowledge Base-Centric Customization Approach for Different Software Product Lines. INFORMATICS 2010. [DOI: 10.2316/p.2010.725-068] [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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573
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Abstract
Epidermal growth factor (EGF) signalling is well known for its multifaceted functions in development and tissue homoeostasis. The EGF family of ligands and receptors (ERBB family) have also been extensively investigated for their roles in promoting tumourigenesis and metastasis in a variety of cancer types. Recent findings indicate that EGF signalling is an important mediator of bone metastasis in breast, prostate and kidney cancers. The EGF signalling stimulates the growth of bone metastasis directly by increasing tumour cell proliferation and indirectly by engaging bone stromal cell in metastasis-promoting activities. Therefore, molecular targeting of ERBB receptors may benefit patients with bone metastasis and should be evaluated in clinical trials.
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574
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575
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Zhao J, Lu X, Duan K, Guo L, Zhou S, Weng J. Improving mechanical and biological properties of macroporous HA scaffolds through composite coatings. Colloids Surf B Biointerfaces 2009; 74:159-66. [DOI: 10.1016/j.colsurfb.2009.07.012] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2009] [Revised: 07/07/2009] [Accepted: 07/11/2009] [Indexed: 10/20/2022]
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