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Liu B, Yu G, Yang Z, Sun L, Song R, Liu F, Xin Y, Zhang L. Simvastatin Reduces OX40 and OX40 Ligand Expression in Human Peripheral Blood Mononuclear Cells and in Patients with Atherosclerotic Cerebral Infarction. J Int Med Res 2009; 37:601-10. [PMID: 19589242 DOI: 10.1177/147323000903700302] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This study investigated the effect of simvastatin on the expression of OX40 and OX40 ligand (OX40L) in vitro and in vivo. OX40 and OX40L mRNA and protein levels were measured in human peripheral blood mononuclear cells, using reverse transcription–polymerase chain reaction and Western blot, respectively, in response to simvastatin alone or given in combination with interferon-γ, mevalonate or GW9662, a peroxisome proliferator-activated receptor-γ (PPAR-γ) antagonist. Simvastatin induced down-regulation of OX40 and OX40L mRNA and protein in a concentration-dependent manner, and antagonized the interferon-γ-induced increase in OX40 and OX40L mRNA and protein levels. Mevalonate, but not GW9662, reversed the simvastatin-induced down-regulation of OX40 and OX40L expression, indicating that these effects were mediated through the mevalonate pathway. Serum levels of soluble OX40L and matrix metalloproteinase 9 levels were significantly reduced in patients with atherosclerotic cerebral infarction who were treated for 6 months with routine therapy plus simvastatin ( n = 46) compared with patients receiving routine therapy alone ( n = 30). These findings improve our understanding of the anti-inflammatory and immunomodulatory properties of simvastatin treatment for atherosclerotic disorders.
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277
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Wang Y, Liu YQ, Li XL, Cao LC, Wei DC, Zhang HL, Shi DC, Yu G. Large-scale growth and characteristics of N-doped carbon nanotubes with ultra-large cavity. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 2009; 9:1076-1079. [PMID: 19441459 DOI: 10.1166/jnn.2009.c091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
N-doped carbon nanotubes (CNTs) with ultra-large cavity have been synthesized by using a mixture of ZnO and graphite as catalyst in the floating catalyst method. The as-synthesized N-doped CNTs are very pure, and a striking characteristic structure is that the outer diameter is at least 10 times larger than the wall thickness. Moreover, electronic properties analysis reveals that the N-doped CNTs with ultra-large cavity have a reduced room temperature resistance compared with those of the common N-doped CNTs, which give an experimental prove for the previous theoretical predictions.
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278
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Yu G, Guo Q, Xie L, Liu Y, Wang X. Effects of subchronic exposure to carbendazim on spermatogenesis and fertility in male rats. Toxicol Ind Health 2009; 25:41-7. [DOI: 10.1177/0748233709103033] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The aim of this study is to investigate the effects of subchronic exposure to carbendazim on spermatogenesis and fertility in male rats. Ninety-eight healthy male rats were divided into four groups: three exposure groups and a control group. Carbendazim was administered orally to male rats at 0, 20, 100 and 200 mg/kg for 80 days prior to mating. Each male was cohabited with an unexposed female for a maximum of 5 days. In 100 and 200 mg/kg groups, the mating index was relatively increased, the fertility index was decreased, and the testis weight, the sperm counts and motility were also decreased. The levels of luteinizing hormone (LH) showed a decreasing tendency and there was a statistical difference between the 200 mg/kg group and the control group. There were no obvious effects on the levels of follicle stimulating hormone (FSH) and testosterone (T). Histopathological evaluation showed atrophic seminiferous tubules, decreased germ cells, and increased sloughing of germ cells. Flow cytometric analysis of the testicular tissue revealed that carbendazim inhibited meiotic transformation and interfered with the spermatogenic process. These results suggest that carbendazim has adverse effects on spermatogenesis, resulting in reduced fertility in male rats.
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279
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Payette C, Yu G, Gupta JA, Austing DG, Nair SV, Partoens B, Amaha S, Tarucha S. Coherent three-level mixing in an electronic quantum dot. PHYSICAL REVIEW LETTERS 2009; 102:026808. [PMID: 19257308 DOI: 10.1103/physrevlett.102.026808] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2008] [Indexed: 05/27/2023]
Abstract
We observe magnetic-field-induced level mixing and quantum superposition phenomena between three approaching single-particle states in a quantum dot probed via the ground state of an adjacent quantum dot by single-electron resonant tunneling. The mixing is attributed to anisotropy and anharmonicity in realistic dot confining potentials. The pronounced anticrossing and transfer of strengths (both enhancement and suppression) between resonances can be understood with a simple coherent level mixing model. Superposition can lead to the formation of a dark state by complete cancellation of an otherwise strong resonance, an effect resembling coherent population trapping in a three-level-system of quantum and atom optics.
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280
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Zhang XJ, Yu G, Wen XH, Lin ZC, Yang FQ, Zheng ZG, Chen RC, Zhong NS. Effect of propofol on twitch diaphragmatic pressure evoked by cervical magnetic stimulation in patients. Br J Anaesth 2009; 102:61-4. [DOI: 10.1093/bja/aen327] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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281
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Wang B, Yu G, Yu YJ, Huang J, Hu HY, Wang LS. Health risk assessment of organic pollutants in Jiangsu reach of the Huaihe River, China. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2009; 59:907-916. [PMID: 19273889 DOI: 10.2166/wst.2009.038] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
In order to evaluate the potential health risk to local public caused by water pollution in Jiangsu reach of the Huaihe River, various organic pollutants, including Polycyclic Aromatic Hydrocarbons (PAHs), Organochlorine Pesticides (OCPs) and some other Semi-Volatile Organic Compounds (SVOCs), were determined. Preliminary health risk assessment (HRA) was performed by calculating the probability that the concentrations of detected compounds exceeded HHCWO (Human Health Criteria for Consumption of Water and Organism) after Kolmogorov-Smirnov test. The probabilities of posing a risk higher than 10(-6) for most potential carcinogens were greater than 0.5, and some even approximated 1. Further HRA for potential carcinogens was performed based on Monte Carlo simulation. Cumulative Risk Probability (CRP) was introduced to characterize risk. The result showed that 3,3'-dichlorobenzidine posed the highest risk. PAHs with 4 approximately 6 rings and some OCPs, such as heptachlorepoxide, aldrin and o,p'-DDT, also posed relatively high risk. Generally, there was a high level of heath risk in the study area. The study validated the high cancer incidence rate in areas along the Huaihe River.
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282
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Huang Q, Yang C, Yu G, Mao ZS. Sensitivity Study on Modeling an Internal Airlift Loop Reactor Using a Steady 2D Two-Fluid Model. Chem Eng Technol 2008. [DOI: 10.1002/ceat.200700278] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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283
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Yu G, Li P, Miao YL, Bian ZZ. Multiscale active contour model for vessel segmentation. J Med Eng Technol 2008; 32:1-9. [PMID: 18183515 DOI: 10.1080/03091900600700798] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
This paper presents a novel multiscale active contour model for vessel segmentation. The model is based on accurate analysis of the vessel structure in the image. According to different scale response of the eigenvalues of local second order derivative (Hessian matrix), a new vessel region information function, which shows a valid estimation of the vesselness measure, is defined. We introduce the posteriori probability estimation into the active contours framework and design a new objective function. The defined objective function is minimized using the variational method, and a new region-based external force is obtained, which is more accurate to the vessel structure and not sensitive to the initial condition. This active contour model combines the obtained region-based and conventional boundary-based force, which aims at finding more accurate vessel edges even when the vessel branches are low contrast or blurry. Furthermore, the proposed model is implemented by an implicit method of level set framework, the solution of which is steady and suitable for various topology changes. Moreover, two new speed functions for vessel segmentation in the level set method are presented, one for fast marching and the other for a narrow-band algorithm. The vessel segmentation experiments compared with previous geometric active contour models are shown on several medical images. The experimental results demonstrate the performance of our approach.
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284
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Li R, Wang X, Yu G, Pan J, Wang J. Prevalence of cancer anemia and correlation between anemia status and survival time in Chinese patients with gastric carcinoma. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.20647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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285
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Nicolleau F, Yu G. Turbulence with combined stratification and rotation: Limitations of Corrsin's hypothesis. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2007; 76:066302. [PMID: 18233912 DOI: 10.1103/physreve.76.066302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2007] [Indexed: 05/25/2023]
Abstract
The properties of one-particle and particle-pair diffusion in rotating and stratified turbulence are studied by applying the rapid distortion theory to a kinematic simulation of the Boussinesq equation with a Coriolis term. We discuss the simplified Corrsin hypothesis and restrict the validity of its predictions to pure rotation. We emphasize the existence of two tau regimes driven by very different physics when rotation is present. Particular attention is given to the locality-in-scale hypothesis for two-particle diffusion in both the horizontal and the vertical directions.
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286
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Wang S, Chen JM, Ju WM, Feng X, Chen M, Chen P, Yu G. Carbon sinks and sources in China's forests during 1901-2001. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2007; 85:524-37. [PMID: 17137706 DOI: 10.1016/j.jenvman.2006.09.019] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2005] [Revised: 08/23/2006] [Accepted: 09/01/2006] [Indexed: 05/12/2023]
Abstract
This paper reports the annual carbon (C) balance of China's forests during 1901-2001 estimated using the Integrated Terrestrial Ecosystem C-budget model (InTEC). Annual carbon source and sink distributions are simulated for the same period using various spatial datasets including land cover and leaf area index (LAI) obtained from remote sensing, soil texture, climate, forest age, and nitrogen deposition. During 1901-1949, China's forests were a source of 21.0+/-7.8 Tg C yr(-1) due to disturbances (human activities). Its size increased to 122.3+/-25.3 Tg C yr(-1) during 1950-1987 due to intensified human activities in the late 1950s, early 1960s, 1970s and early 1980s. The forests became large sinks of 176.7+/-44.8 Tg C yr(-1) during 1988-2001, owing to large-scale plantation and forest regrowth in previously disturbed areas as well as growth stimulation by nondisturbance factors such as climatic warming, atmospheric CO(2) fertilization, and N deposition. From 1901 to 2001, China's forests were a small carbon source of 3.32 Pg C, about 32.9+/-22.3 Tg C yr(-1). The overall C balance in biomass from InTEC generally agrees with previous results derived from forest inventories of China's forests. InTEC results also include C stock variation in soils and are therefore more comprehensive than previous results. The uncertainty in InTEC results is still large, but it can be reduced if a detailed forest age map becomes available.
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Sun ZH, Xu D, Wang XQ, Liu XJ, Yu G, Zhang GH, Zhu L, Fan HL. Growth and characterization of the nonlinear optical crystal: L-arginine trifluoroacetate. CRYSTAL RESEARCH AND TECHNOLOGY 2007. [DOI: 10.1002/crat.200710910] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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288
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Wang B, Yu G, Hu H, Wang L. Quantitative structure-activity relationships and mixture toxicity of substituted benzaldehydes to Photobacterium phosphoreum. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2007; 78:503-9. [PMID: 17541483 DOI: 10.1007/s00128-007-9144-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2007] [Accepted: 03/16/2007] [Indexed: 05/15/2023]
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289
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Matsukawa N, Maki M, Yasuhara T, Hara K, Yu G, Xu L, Kim KM, Morgan JC, Sethi KD, Borlongan CV. Overexpression of D2/D3 receptors increases efficacy of ropinirole in chronically 6-OHDA-lesioned Parkinsonian rats. Brain Res 2007; 1160:113-23. [PMID: 17573046 DOI: 10.1016/j.brainres.2007.05.030] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2007] [Revised: 05/12/2007] [Accepted: 05/17/2007] [Indexed: 01/09/2023]
Abstract
Ropinirole, which is a non-ergot dopamine agonist derivative, exerts therapeutic benefits in Parkinson's disease (PD). Based on recent studies implicating dopamine receptors 2 and 3 (D2R and D3R) as possible targets of ropinirole, we over-expressed these dopamine receptor genes in the dopamine-denervated striatum of rodents to reveal whether their over-expression modulated ropinirole activity. Adult Sprague-Dawley rats initially received unilateral 6-hydroxydopamine lesion of the medial forebrain bundle. At 1 month after surgery, successfully lesioned animals (3 or less forelimb akinesia score, and 8 or more apomorphine-induced rotations/min over 1 h) were randomly assigned to intrastriatal injection (ipsilateral to the lesion) of blank lentiviral vector, D2R, D3R or both genes. At about 5 months post-lesion, ropinirole (0.2 mg/kg, i.p.) was administered daily for 9 consecutive days. The subtherapeutic dose of ropinirole improved the use of previously akinetic forelimb and produced robust circling behavior in lesioned animals with striatal over-expression of both D2R and D3R compared to lesioned animals that received blank vector. In contrast, the subtherapeutic dose of ropinirole generated only modest motor effects in lesioned animals with sole over-expression of D2R or D3R. Western immunoblot and autoradiographic assays showed enhanced D2R and D3R protein levels coupled with normalized D2R and D3R binding in the ventral striatum of lesioned animals with lentiviral over-expression of both D2R and D3R relative to vehicle-treated lesioned animals. Immunohistochemical analyses showed that D2R and D3R GFP fluorescent cells colocalized with enkephalin and substance P immunoreactive medium spiny neurons. These data support the use of the subtherapeutic dose of ropinirole in a chronic model of PD.
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290
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Sun J, Xu K, Wu C, Wang Y, Hu Y, Zhu Y, Chen Y, Shi Q, Yu G, Zhang X. PD-L1 expression analysis in gastric carcinoma tissue and blocking of tumor-associated PD-L1 signaling by two functional monoclonal antibodies. ACTA ACUST UNITED AC 2007; 69:19-27. [PMID: 17212704 DOI: 10.1111/j.1399-0039.2006.00701.x] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Programmed death-1 ligand-1 (PD-L1), a member of the B7 family of costimulatory molecules, plays an important role in the regulations of the cellular and humoral immune responses. In this study, two mouse anti-human PD-L1 monoclonal antibodies named 10E10 and 2H11 were successfully generated and further characterized. Monoclonal antibody 10E10 bound to distinct PD-L1 epitope comparing an available anti-PD-L1 monoclonal antibody on a series of malignant cell lines, activated T lymphocytes, B lymphocytes and dendritic cells. Then, by using immunohistochemistry staining with monoclonal antibody 2H11, the expression of PD-L1 was found in human gastric carcinoma specimens but not in normal or gastric adenoma tissues. Additional data show that PD-L1 can be regarded as a decisive factor in evaluating gastric carcinoma prognosis and anti-human PD-L1 monoclonal antibody 10E10 could inhibit T-cell apoptosis induced by tumor-associated PD-L1. Taken together, these results showed that the two functional mouse anti-human PD-L1 monoclonal antibodies we generated might be of great value for further exploration of the costimulatory molecule regulating network and immunointervention for tumor immunotherapy.
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291
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Yu G, Yamashita M, Aoshima K, Takahashi M, Oshikawa T, Takayanagi H, Laurent S, Burtea C, Vander Elst L, Muller RN. A glycosylated complex of gadolinium, a new potential contrast agent for magnetic resonance angiography? Bioorg Med Chem Lett 2007; 17:2246-9. [PMID: 17303417 DOI: 10.1016/j.bmcl.2007.01.067] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2006] [Revised: 01/19/2007] [Accepted: 01/19/2007] [Indexed: 10/23/2022]
Abstract
A new low-molecular weight dendrimer-like MRI contrast agent (Gd-D1) has been synthesized and characterized in vitro by proton and oxygen-17 relaxometry. Its pharmacokinetic parameters and biodistribution patterns were evaluated on rats. Its in vitro and in vivo properties, that is, the longitudinal relaxivity (defined as the increase of the water proton longitudinal relaxation rate induced by one millimole per liter of Gd-D1) equal to 5.6s(-1)mM(-1) at 20 MHz and 310 K, the elimination half-time equal to 85 min, and its low accumulation in liver and spleen, underline its potential as a blood-pool MRI contrast agent.
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292
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Du KL, Mick R, Busch TM, Zhu TC, Finlay JC, Yu G, Yodh AG, Malkowicz SB, Smith D, Whittington R, Stripp D, Hahn SM. Preliminary results of interstitial motexafin lutetium-mediated PDT for prostate cancer. Lasers Surg Med 2007; 38:427-34. [PMID: 16788929 DOI: 10.1002/lsm.20341] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
BACKGROUND AND OBJECTIVES Interstitial photodynamic therapy (PDT) is an emerging modality for the treatment of solid organ disease. Our group at the University of Pennsylvania has performed extensive studies that demonstrate the feasibility of interstitial PDT for prostate cancer. Our preclinical and clinical experience is herein detailed. STUDY DESIGN/MATERIALS AND METHODS We have treated 16 canines in preclinical studies, and 16 human subjects in a Phase I study, using motexafin lutetium-mediated PDT for recurrent prostate adenocarcinoma. Dosimetry of light fluence, drug level and oxygen distribution for these patients were performed. RESULTS We demonstrate the safe and comprehensive treatment of the prostate using PDT. However, there is significant variability in the dose distribution and the subsequent tissue necrosis throughout the prostate. CONCLUSIONS PDT is an attractive option for the treatment of prostate adenocarcinoma. However, the observed variation in PDT dose distribution translates into uncertain therapeutic reproducibility. Our future focus will be on the development of an integrated system that is able to both detect and compensate for dose variations in real-time, in order to deliver a consistent overall PDT dose distribution.
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293
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Motoyama EM, Yu G, Vishik IM, Vajk OP, Mang PK, Greven M. Spin correlations in the electron-doped high-transition-temperature superconductor Nd2-xCexCuO4±δ. Nature 2007; 445:186-9. [PMID: 17215839 DOI: 10.1038/nature05437] [Citation(s) in RCA: 179] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2006] [Accepted: 11/09/2006] [Indexed: 11/09/2022]
Abstract
High-transition-temperature (high-T(c)) superconductivity develops near antiferromagnetic phases, and it is possible that magnetic excitations contribute to the superconducting pairing mechanism. To assess the role of antiferromagnetism, it is essential to understand the doping and temperature dependence of the two-dimensional antiferromagnetic spin correlations. The phase diagram is asymmetric with respect to electron and hole doping, and for the comparatively less-studied electron-doped materials, the antiferromagnetic phase extends much further with doping and appears to overlap with the superconducting phase. The archetypal electron-doped compound Nd2-xCexCuO4+/-delta (NCCO) shows bulk superconductivity above x approximately 0.13 (refs 3, 4), while evidence for antiferromagnetic order has been found up to x approximately 0.17 (refs 2, 5, 6). Here we report inelastic magnetic neutron-scattering measurements that point to the distinct possibility that genuine long-range antiferromagnetism and superconductivity do not coexist. The data reveal a magnetic quantum critical point where superconductivity first appears, consistent with an exotic quantum phase transition between the two phases. We also demonstrate that the pseudogap phenomenon in the electron-doped materials, which is associated with pronounced charge anomalies, arises from a build-up of spin correlations, in agreement with recent theoretical proposals.
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294
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Wang F, Zhu W, Liu T, Sun Z, Ju S, Ju S, Yu G, Xie W, Deng Z, Lu B, Zhang X. The expression analysis of ICOS-L on activated T cells and immature dendritic cells as well as malignant B cells and Grave's-disease-derived thyroid tissues by two novel mAbs against human ICOS-L. ACTA ACUST UNITED AC 2007; 69:62-72. [PMID: 17212709 DOI: 10.1111/j.1399-0039.2006.00706.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
ICOS-L, a newly identified member of B7 superfamily, plays an important role in immune responses. In this article, we report on two novel mouse anti-human ICOS-L monoclonal antibodies (mAbs) named as 11C4 and 12B11, whose specificities were verified by methods of flow cytometry, western blotting, and epitope competition assay. The two mAbs bound to distinct ICOS-L epitopes on B cells. Interestingly, mAb 11C4 could well recognize ICOS-L molecule on activated T cells and Jurkat cell lines, which is different from commercial anti-ICOS-L mAb (clone number MIH12) and the other mAb 12B11. In addition, we found that the expression of ICOS-L molecule was only detected on the surface of immature monocyte-derived dendritic cells (Mo-DCs) and was sharply decreased after induction of mature Mo-DCs activated by tumor necrosis factor-alpha or CD40. Furthermore, we showed that 11C4 could effectively suppress the maturation of Mo-DCs in vitro as evidenced by the low expression of CD80, CD86, CD83, and human leukocyte antigen-DR, which suggested that ICOS-L may be involved in the maturation of Mo-DCs. Using immunohistochemistry staining with mAb 11C4, the expression of ICOS-L was found in B lymphoma tissues and thyroid tissues from the Grave's disease but not in thyroid adenoma and normal thyroid tissues.
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Snyder EE, Kampanya N, Lu J, Nordberg EK, Karur HR, Shukla M, Soneja J, Tian Y, Xue T, Yoo H, Zhang F, Dharmanolla C, Dongre NV, Gillespie JJ, Hamelius J, Hance M, Huntington KI, Jukneliene D, Koziski J, Mackasmiel L, Mane SP, Nguyen V, Purkayastha A, Shallom J, Yu G, Guo Y, Gabbard J, Hix D, Azad AF, Baker SC, Boyle SM, Khudyakov Y, Meng XJ, Rupprecht C, Vinje J, Crasta OR, Czar MJ, Dickerman A, Eckart JD, Kenyon R, Will R, Setubal JC, Sobral BWS. PATRIC: the VBI PathoSystems Resource Integration Center. Nucleic Acids Res 2006; 35:D401-6. [PMID: 17142235 PMCID: PMC1669763 DOI: 10.1093/nar/gkl858] [Citation(s) in RCA: 93] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The PathoSystems Resource Integration Center (PATRIC) is one of eight Bioinformatics Resource Centers (BRCs) funded by the National Institute of Allergy and Infection Diseases (NIAID) to create a data and analysis resource for selected NIAID priority pathogens, specifically proteobacteria of the genera Brucella, Rickettsia and Coxiella, and corona-, calici- and lyssaviruses and viruses associated with hepatitis A and E. The goal of the project is to provide a comprehensive bioinformatics resource for these pathogens, including consistently annotated genome, proteome and metabolic pathway data to facilitate research into counter-measures, including drugs, vaccines and diagnostics. The project's curation strategy has three prongs: ‘breadth first’ beginning with whole-genome and proteome curation using standardized protocols, a ‘targeted’ approach addressing the specific needs of researchers and an integrative strategy to leverage high-throughput experimental data (e.g. microarrays, proteomics) and literature. The PATRIC infrastructure consists of a relational database, analytical pipelines and a website which supports browsing, querying, data visualization and the ability to download raw and curated data in standard formats. At present, the site warehouses complete sequences for 17 bacterial and 332 viral genomes. The PATRIC website () will continually grow with the addition of data, analysis and functionality over the course of the project.
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296
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Lee CH, Yu G, Pakbaz K, Moses D, Srdanov VI. The Effect of Oxygen on the Photoconductivity of C60 Film: Action Spectrum and Temperature Dependence. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/10587259408039323] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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297
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Lee CH, Yu G, Moses D, Sariciftci NS, Wudl F, Heeger AJ. Transient Photoconductivity of MEH-PPV and Its Sensitization by C60. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/10587259408039319] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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298
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Yu G, Pakbaz K, Zhang C, Heeger AJ. Photosensitivity of MEH-PPV Sandwich Devices and Its Implication to Polymer Electronic Structure. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/10587259408039289] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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299
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Venkatachalam TK, Huang H, Yu G, Uckun FM. Synthesis of a Piceatannol Analog: Replacement of Hydroxy Group with Amide Functionality. SYNTHETIC COMMUN 2006. [DOI: 10.1081/scc-120030700] [Citation(s) in RCA: 4] [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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300
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Pardossi-Piquard R, Dunys J, Yu G, St George-Hyslop P, Alves da Costa C, Checler F. Neprilysin activity and expression are controlled by nicastrin. J Neurochem 2006; 97:1052-6. [PMID: 16606360 DOI: 10.1111/j.1471-4159.2006.03822.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We recently demonstrated that the presenilin-dependent gamma-secretase complex regulates the expression and activity of neprilysin, one of the main enzymes that degrade the amyloid beta-peptide (Abeta) which accumulates in Alzheimer's disease. Here, we examined the influence of endogenous nicastrin (NCT), a member of the gamma-secretase complex, on neprilysin physiology. We show that nicastrin deficiency drastically lowers neprilysin expression, membrane-bound activity and mRNA levels, but it did not modulate the expression of two other putative Abeta-cleaving enzymes, endothelin-converting enzyme and insulin-degrading enzyme. Furthermore, we show that nicastrin restores neprilysin activity and expression in nicastrin-deficient, but not presenilin-deficient fibroblasts, indicating that the control of neprilysin necessitates the complete gamma-secretase complex harbouring its four reported components. Finally, we show that NCT expression peaked 24 h after NCT cDNA transfection of wild-type and NCT-/- fibroblasts, while neprilysin expression drastically increased only after 36 h and was maximal at 48 h. This delayed effect on neprilysin expression correlates well with our demonstration of an indirect gamma-secretase-dependent modulation of neprilysin at its transcriptional level.
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