251
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Jiang Q, Li MH, Papasian CJ, Branigan D, Xiong ZG, Wang JQ, Chu XP. Characterization of acid-sensing ion channels in medium spiny neurons of mouse striatum. Neuroscience 2009; 162:55-66. [PMID: 19376200 DOI: 10.1016/j.neuroscience.2009.04.029] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2009] [Revised: 04/10/2009] [Accepted: 04/13/2009] [Indexed: 11/17/2022]
Abstract
Acid-sensing ion channels (ASICs) regulate synaptic activities and play important roles in neurodegenerative diseases. They are highly expressed in the striatum, where medium spiny neurons (MSNs) are a major population. Given that the properties of ASICs in MSNs are unknown, in this study, we characterized ASICs in MSNs of the mouse striatum. A rapid drop in extracellular pH induced transient inward currents in all MSNs. The pH value for half-maximal activation was 6.25, close to that obtained in homomeric ASIC1a channels. Based on psalmotoxin 1 and zinc sensitivity, ASIC1a (70.5% of neurons) and heteromeric ASIC1a-2 channels (29.5% of neurons) appeared responsible for the acid-induced currents in MSNs. ASIC currents were diminished in MSNs from ASIC1, but not ASIC2, null mice. Furthermore, a drop in pH induced calcium influx by activating homomeric ASIC1a channels. Activation of ASICs increased the membrane excitability of MSNs and lowering extracellular Ca2+ potentiated ASIC currents. Our data suggest that the homomeric ASIC1a channel represents a majority of the ASIC isoform in MSNs. The potential function of ASICs in the striatum requires further investigation.
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252
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Zhang ZY, Jiang Q, Luxmoore IJ, Hogg RA. A p-type-doped quantum dot superluminescent LED with broadband and flat-topped emission spectra obtained by post-growth intermixing under a GaAs proximity cap. NANOTECHNOLOGY 2009; 20:055204. [PMID: 19417341 DOI: 10.1088/0957-4484/20/5/055204] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Broadband superluminescent light emitting diodes are realized by a post-growth annealing process, on modulation p-doped multiple InAs/InGaAs/GaAs quantum dot layer structures, under a GaAs proximity cap. The device exhibits a large and flat emission with spectral width up to 132 nm at 2 mW. This is mainly attributed to the reduction of the energy separation between the ground state and the excited state, in addition to the optical quality of the intermixed modulation p-doped quantum dot materials being comparable to that of the as-grown sample.
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253
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Hogg M, Martinez J, Jiang Q, Varu V, Chen A, Kibbe M. QS427. Sex, Nitric Oxide, and Neointimal Hyperplasia: Size Matters. J Surg Res 2009. [DOI: 10.1016/j.jss.2008.11.739] [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]
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254
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Meulenbelt I, Chapman K, Dieguez-Gonzalez R, Shi D, Tsezou A, Dai J, Malizos KN, Kloppenburg M, Carr A, Nakajima M, van der Breggen R, Lakenberg N, Gomez-Reino JJ, Jiang Q, Ikegawa S, Gonzalez A, Loughlin J, Slagboom EP. Large replication study and meta-analyses of DVWA as an osteoarthritis susceptibility locus in European and Asian populations. Hum Mol Genet 2009; 18:1518-23. [DOI: 10.1093/hmg/ddp053] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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255
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Abstract
In order to identify events/activities that are particularly stressful for farmers/ranchers, afarm stress survey based on the proportionate scaling method was mailed to a stratified random sample of 3000 Iowa farmers by the USDA National Agricultural Statistics Service. The participants were asked to compare 62 life events and farm activities to a marriage (assigned a baseline rating of 50), decide if it was less stressful or more stressful, and then assign a stress rating between 1 and 100. As expected, the most stressful events were the death of a spouse or child. Other high-stress events were disabling injuries, foreclosure on a mortgage, divorce, machinery breakdown during harvest, and loss of crop to weather. Mean stress ratings varied by age, marital status, and type of farming enterprise. Farmers between the ages of 40-59 and 60-79 had the most items with high stress levels. Females had more high-stress items than males. Divorced farmers had fewer high-stress items than other respondents. Farmer's whose primary focus was raising horses had more high-stress items than other farm types. Significant outcomes of this study go beyond the specific mean stress ratings of the events and activities. The results indicate that farm stressors can be quantified using the proportionate scaling method and that the impact of the stressor is based not just on the event but is also dependent on the characteristics of the farmer (e.g., age, gender, marital status, etc.).
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256
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M. Ao Z, Jiang Q. Density Functional Theory Calculations on Interface Structures and Adsorption Properties of Graphenes: A Review. ACTA ACUST UNITED AC 2009. [DOI: 10.2174/1874140100903010034] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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257
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Liu W, Zhao YH, Li Y, Lavernia EJ, Jiang Q. A reversible switch for hydrogen adsorption and desorption: electric fields. Phys Chem Chem Phys 2009; 11:9233-40. [DOI: 10.1039/b907591g] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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258
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Ao ZM, Li S, Jiang Q. Thermal stability of interaction between the CO molecules and the Al doped graphene. Phys Chem Chem Phys 2009; 11:1683-7. [DOI: 10.1039/b812188e] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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259
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Jiang Q, Li S. Thermodynamic Considerations on Solid Structural Transition Temperatures of Nanocrystals. ACTA ACUST UNITED AC 2008. [DOI: 10.1166/jctn.2008.1203] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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260
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Yu S, Wen Q, Zheng W, Jiang Q. Electronic properties of graphene nanoribbons with armchair-shaped edges. MOLECULAR SIMULATION 2008. [DOI: 10.1080/08927020801958795] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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261
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Gao W, Zheng WT, Jiang Q. Dehydrogenation of benzene on Pt(111) surface. J Chem Phys 2008; 129:164705. [DOI: 10.1063/1.3001610] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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262
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Ma Y, Cai S, Lu Q, Lu X, Jiang Q, Zhou J, Zhang C. Inhibition of protein deacetylation by trichostatin A impairs microtubule-kinetochore attachment. Cell Mol Life Sci 2008; 65:3100-9. [PMID: 18759129 PMCID: PMC11131606 DOI: 10.1007/s00018-008-8237-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Inhibition of protein deacetylation arrests cells in mitosis, but the mechanism is unknown. To understand why inhibiting protein deacetylation causes cell cycle arrest, we treated HeLa cells beyond G1/S transition with trichostatin A (TSA), a potent protein deacetylase inhibitor, and found that the cells arrested at prometaphase with ectopic spindles and unaligned chromosomes. The hyper-acetylated cells encountered a serious microtubule (MT)-kinetochore attachment problem, although the kinetochores are intact at ultrastructural level. By immunofluorescence staining of kinetochore proteins, we found that the pericentromeric H3K9Me3-HP1 pathway was disrupted and that the CENP-A-dependent outer plate protein dynamics of kinetochores was greatly diminished by the drug treatment. The treatment also caused the loss of chromosome passenger complex (CPC), the proposed error checking system, from centromere and impaired the microtubule dynamics of the cells. Overall, we propose that deacetylation inhibition impairs MT-kinetochore attachment through disrupting the centromere function and altering the kinetochore composition and MT dynamics.
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263
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Huang XJ, Liu DH, Liu KY, Xu LP, Chen H, Han W, Chen YH, Wang JZ, Gao ZY, Zhang YC, Jiang Q, Shi HX, Lu DP. Erratum: Haploidentical hematopoietic stem cell transplantation without in vitro T-cell depletion for the treatment of hematological malignancies. Bone Marrow Transplant 2008. [DOI: 10.1038/bmt.2008.216] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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264
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Manivannan D, Jiang Q, Yang J, Singhal M. A quasi-synchronous checkpointing algorithm that prevents contention for stable storage. Inf Sci (N Y) 2008. [DOI: 10.1016/j.ins.2008.04.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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265
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266
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Dieguez-Gonzalez R, Calaza M, Shi D, Meulenbelt I, Loughlin J, Tsezou A, Dai J, Malizos KN, Slagboom EP, Kloppenburg M, Chapman K, Jiang Q, Kremer D, Gomez-Reino JJ, Nakajima N, Ikegawa S, Gonzalez A. Testing the druggable endothelial differentiation gene 2 knee osteoarthritis genetic factor for replication in a wide range of sample collections. Ann Rheum Dis 2008; 68:1017-21. [PMID: 18625619 DOI: 10.1136/ard.2008.093641] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBJECTIVES To replicate a previously reported association with osteoarthritis (OA) of the promoter single nucleotide polymorphism (SNP) rs10980705 in the endothelial differentiation gene 2 (EDG2). METHODS Five collections of samples, four from Europe and one from China, were studied. They included patients with 3 OA phenotypes: 1501 with knee OA, 1497 with hip OA and 376 with generalised OA. A total of 2521 controls were also studied. Allele and genotype frequencies of the rs10980705 SNP were analysed in each individual sample collection and in pooled data. In addition, a meta-analysis to incorporate results from the original Japanese report was performed. RESULTS The association of the rs10980705 SNP with knee OA was not replicated in any of the five sample collections studied or in their combined analysis (odds ratio (OR) 1.10, 95% CI 0.98 to 1.22; p = 0.10). Meta-analysis of all data, including the original Japanese study, did show association with knee OA (OR 1.15, 95% CI 1.06 to 1.26; p = 0.002) but the effect was accounted for by the Japanese data and was less significant than the original report. No association was found with hip OA or with generalised OA. CONCLUSIONS The original report of a promising genetic association between a druggable G-protein coupled receptor, EDG2, and knee OA has not been replicated. This lack of replication could be due to a modest effect of the promoter polymorphism that will require even larger studies (the winners curse) although a more pronounced effect in the Asian population vs Europeans cannot be excluded.
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267
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Ao ZM, Zheng WT, Jiang Q. The effects of electronic field on the atomic structure of the graphene/α-SiO(2) interface. NANOTECHNOLOGY 2008; 19:275710. [PMID: 21828722 DOI: 10.1088/0957-4484/19/27/275710] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
The atomic structure of the graphene/α-SiO(2)(0001) interface under electric field F with different intensities is studied using the density functional theory method. Simulation results indicate that the atomic structure of the graphene/α-SiO(2)(0001) interface has only a slight change under the condition of F≤0.02 au. However, the distance between substrate and graphene d(0) changes evidently. Moreover, as F reaches 0.03 au, the formation of a C-O covalent bond on the interface is present, which would destroy the excellent electronic properties of graphene. Thus, there exists a maximum for F in application of the graphene.
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268
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269
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Xu ZP, Zheng QS, Jiang Q, Ma CC, Zhao Y, Chen GH, Gao H, Ren GX. Trans-phonon effects in ultra-fast nanodevices. NANOTECHNOLOGY 2008; 19:255705. [PMID: 21828665 DOI: 10.1088/0957-4484/19/25/255705] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We report a novel phenomenon in carbon nanotube based ultra-fast mechanical devices, the trans-phonon effect, which resembles the transonic effects in aerodynamics. It is caused by dissipative resonance of nanotube phonons similar to the radial breathing mode, and subsequent drastic surge of the dragging force on the sliding tube, and multiple phonon barriers are encountered as the intertube sliding velocity reaches critical values. It is found that the trans-phonon effects can be tuned by applying geometric constraints or varying chirality combinations of the nanotubes.
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270
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Liu Y, Strumban E, Jiang Q, Zhao J, Chen Q, Sozontov E, Gutman G, Guan H, Li S. TU-C-AUD B-05: Desired Dose Distributions From Newly-Designed Low-Energy Needle-Based X-Ray Sources. Med Phys 2008. [DOI: 10.1118/1.2962441] [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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271
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Kornstein S, Fava M, Tourian K, Lamm L, Jiang Q, Patroneva A, Ahmed S. Age and gender analysis of baseline depressive symptoms in patients with major depressive disorder treated with Desvenlafaxine Succinate or placebo. Eur Psychiatry 2008. [DOI: 10.1016/j.eurpsy.2008.01.506] [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: 12/01/2022] Open
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272
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Dierkes W, Jiang Q, Loeschmann P, Ahmed S, Mallick R, Schmitt A. Treatment effects of Venlafaxine on work activity compared to SSRIs in the treatment of MDD according to baseline severity. Eur Psychiatry 2008. [DOI: 10.1016/j.eurpsy.2008.01.475] [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: 10/22/2022] Open
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273
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Schmitt A, Jiang Q, Loeschmann P, Ahmed S. Differential effects of Venlafaxine compared to selective Serotonin reuptake inhibitors (SSRIs) in the treatment of MMD according to baseline severity. Eur Psychiatry 2008. [DOI: 10.1016/j.eurpsy.2008.01.528] [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: 11/28/2022] Open
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274
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Thase M, Kornstein S, Tummala R, Germain J, Jiang Q, Ahmed S, Ninan P. An integrated analysis of the efficacy of desvenlafaxine succinate compared with placebo in the treatment of major depressive disorder. Eur Psychiatry 2008. [DOI: 10.1016/j.eurpsy.2008.01.344] [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: 11/28/2022] Open
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275
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Ho YM, Yang GM, Zheng WT, Wang X, Tian HW, Xu Q, Li HB, Liu JW, Qi JL, Jiang Q. Synthesis and field electron emission properties of hybrid carbon nanotubes and nanoparticles. NANOTECHNOLOGY 2008; 19:065710. [PMID: 21730716 DOI: 10.1088/0957-4484/19/6/065710] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Hybrid ZnO-carbon nanotubes as well as nanodiamond-carbon nanotubes were synthesized via a straightforward process of plasma enhanced chemical vapor deposition. For the former, ZnO nanoparticles were instantly coated on the tube surface in the final growing process of carbon nanotubes, while for the latter diamond nanoparticles were grown using pretreatment of a silicon substrate with Ni(NO(3))(2)·6H(2)O/Mg(NO(3))(2)·6H(2)O alcohol solution prior to deposition and a high H(2)/CH(4) gas flow ratio in the deposition process. The morphology and microstructure of the obtained hybrid materials were characterized by transmission electron microscopy. Both hybrid ZnO-carbon nanotubes and nanodiamond-carbon nanotubes exhibited excellent field emission properties.
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