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Shen C, Meng Q. Prediction of Cytochrome 450 Mediated Drug-Drug Interactions by Three-Dimensional Cultured Hepatocytes. Mini Rev Med Chem 2012; 12:1028-36. [DOI: 10.2174/138955712802762293] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2011] [Revised: 03/14/2012] [Accepted: 03/18/2012] [Indexed: 11/22/2022]
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227
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Meng Q, Garcia-Rodriguez C, Manzanarez G, Silberg MA, Conrad F, Bettencourt J, Pan X, Breece T, To R, Li M, Lee D, Thorner L, Tomic MT, Marks JD. Engineered domain-based assays to identify individual antibodies in oligoclonal combinations targeting the same protein. Anal Biochem 2012; 430:141-50. [PMID: 22922799 DOI: 10.1016/j.ab.2012.08.005] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2012] [Revised: 07/29/2012] [Accepted: 08/07/2012] [Indexed: 11/28/2022]
Abstract
Quantitation of individual monoclonal antibodies (mAbs) within a combined antibody drug product is required for preclinical and clinical drug development. We have developed two antitoxins, XOMA 3B and XOMA 3E, each consisting of three mAbs that neutralize type B and type E botulinum neurotoxin (BoNT/B and BoNT/E) to treat serotype B and E botulism. To develop mAb-specific binding assays for each antitoxin, we mapped the epitopes of the six mAbs. Each mAb bound an epitope on either the BoNT light chain (LC) or translocation domain (H(N)). Epitope mapping data were used to design LC-H(N) domains with orthogonal mutations to make them specific for only one mAb in either XOMA 3B or XOMA 3E. Mutant LC-H(N) domains were cloned, expressed, and purified from Escherichia coli. Each mAb bound only to its specific domain with affinity comparable to the binding to holotoxin. Further engineering of domains allowed construction of enzyme-linked immunosorbent assays (ELISAs) that could characterize the integrity, binding affinity, and identity of each of the six mAbs in XOMA 3B and 3E without interference from the three BoNT/A mAbs in XOMA 3AB. Such antigen engineering is a general method allowing quantitation and characterization of individual mAbs in a mAb cocktail that bind the same protein.
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Meng Q, Qian W, Ren P, Liu N, Zhou K, Ma Y, Chen L. Interference between fear emotion and topological perception and its neural correlation in amygdala. J Vis 2012. [DOI: 10.1167/12.9.1307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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229
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Zhou N, Chen G, Zhang X, Cheng L, Luo Y, Li D, Meng Q. Highly efficient PbS/CdS co-sensitized solar cells based on photoanodes with hierarchical pore distribution. Electrochem commun 2012. [DOI: 10.1016/j.elecom.2012.03.032] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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230
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Huang S, Sun H, Huang X, Zhang Q, Li D, Luo Y, Meng Q. Carbon nanotube counter electrode for high-efficient fibrous dye-sensitized solar cells. NANOSCALE RESEARCH LETTERS 2012; 7:222. [PMID: 22507398 PMCID: PMC3441495 DOI: 10.1186/1556-276x-7-222] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2011] [Accepted: 04/17/2012] [Indexed: 05/30/2023]
Abstract
High-efficient fibrous dye-sensitized solar cell with carbon nanotube (CNT) thin films as counter electrodes has been reported. The CNT films were fabricated by coating CNT paste or spraying CNT suspension solution on Ti wires. A fluorine tin oxide-coated CNT underlayer was used to improve the adherence of the CNT layer on Ti substrate for sprayed samples. The charge transfer catalytic behavior of fibrous CNT/Ti counter electrodes to the iodide/triiodide redox pair was carefully studied by electrochemical impedance and current-voltage measurement. The catalytic activity can be enhanced by increasing the amount of CNT loading on substrate. Both the efficiencies of fibrous dye-sensitized solar cells using paste coated and sprayed CNT films as counter electrodes are comparative to that using Pt wires, indicating the feasibility of CNT/Ti wires as fibrous counter electrode for superseding Pt wires.
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231
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Chen Y, Ke J, Long X, Meng Q, Deng M, Fang W, Li J, Cai H, Chen S. Insulin-like growth factor-1 boosts the developing process of condylar hyperplasia by stimulating chondrocytes proliferation. Osteoarthritis Cartilage 2012; 20:279-87. [PMID: 22281262 DOI: 10.1016/j.joca.2011.12.013] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2011] [Revised: 11/30/2011] [Accepted: 12/22/2011] [Indexed: 02/02/2023]
Abstract
OBJECTIVE The etiology of Condylar hyperplasia (CH) of human temporomandibular joint (TMJ) remains largely unknown. Our previous study has demonstrated that enriched insulin-like growth factor-1(IGF-1) was expressed in the proliferation and hypertrophic layers of CH cartilage. Accordingly, this study was aimed to investigate whether IGF-1 regulates CH chondrocytes proliferation in condylar cartilage overgrowth and explore the molecular mechanism of IGF-1 involved in. METHODS Chondrocytes were isolated from 6 CH and 3 normal cartilage (NC) specimens and cultured in alginate beads or monolayer, treated with IGF-1 or specific inhibitors such as 7-[trans-3-[(azetidin-1-yl)methyl]cyclobutyl]-5-(3-benzyloxyphenyl)-7H-pyrrolo[2,3-d]pyrimidin-4-amine (NVP-AEW541), U0126, and LY294002. Thereafter, cellular proliferation capacity was evaluated by Cell Viability Analyzer (alginate beads culture) or 3-(4,5-dimethylthiazo(-2-yl)-2,5-diphenyltetrazolium bromide (MTT) (monolayer culture). Gene expression levels of IGF-1, IGF-1 receptor (IGF-1R), collagen type II, type X and those genes associated with proliferation were evaluated by realtime PCR. Protein levels of IGF-1 and IGF-1R synthesized by CH chondrocytes were accessed by enzyme-linked immunosorbent assay (ELISA) and western blotting. RESULTS CH chondrocytes enhanced cellular proliferation capacity and expressed significantly higher levels of messenger RNA (mRNA) and protein expressions of IGF-1 and IGF-1R, as compared with NC chondrocytes. Furthermore, enriched IGF-1 enhanced CH chondrocytes proliferation, up-regulated the expressions of specific genes associated with cellular proliferation and elevated the gene expression of collagen type II A1 (COL2A1). Besides, IGF-1-mediated CH chondrocytes proliferation mainly depended on the mitogen-activated protein kinase (MAPK)-ERK pathway. CONCLUSIONS IGF-1 promotes human TMJ cartilage overgrowth in the developing process of CH by enhancing chondrocytes proliferation via MAPK-ERK pathway.
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Yang L, Wang J, Zhang Y, Luo Y, Li D, Meng Q. In situ optical microspectroscopy monitoring of binary colloidal crystal growth dynamics via evaporation-induced cooperative self-assembly. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:4160-4167. [PMID: 22320329 DOI: 10.1021/la205111v] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Real-time monitoring of the binary colloidal crystal (bCC) growth via evaporation-induced cooperative self-assembly (EICSA) was studied by an in situ optical microspectroscopy technique. Evolution of the recorded reflectance spectra reveals that the whole growth process of bCCs via EICSA could be separated into three different stages corresponding to that of unary colloidal crystals because of the same evaporation model. We show the detailed cooperative self-assembly information, including the evolution of the number of layers and filling factors of different components of the growing bCCs using the scalar wave approximation method. Furthermore, when the size ratio and number ratio of the two colloids were varied, the real-time optical properties of the bCCs with various stoichiometric configurations were investigated systematically. This study would be valuable in furthering the current understanding of the bCC growth dynamics via EICSA and tailoring optical properties of hierarchical materials for applications in many fields.
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233
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Jin X, Zeng F, Zhang N, Huang T, Meng Q, Liu Y. Association of Sterol Regulatory Element-Binding Transcription Factor Gene Polymorphisms with Ischaemic Stroke. J Int Med Res 2012; 40:157-66. [PMID: 22429355 DOI: 10.1177/147323001204000116] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE: To explore the association between polymorphisms of the sterol regulatory element-binding transcription factor ( SREBF) gene and ischaemic stroke. METHODS: The SREBF1c 54G>C and SREBPF2 1784G>C genotypes were assessed using restriction fragment length polymorphism analysis in 446 Han Chinese ischaemic stroke patients and 355 Han Chinese control subjects without cerebrovascular disease. RESULTS: The frequencies of the SREBF2 1784G>C CC genotype and the C allele were significantly higher in the ischaemic stroke group than in controls. Patients with ischaemic stroke who had the SREBF2 1784G>C CC genotype had significantly lower high-density lipoprotein (HDL) levels, compared with ischaemic stroke patients and control subjects with the GC or GG genotypes. Multivariate logistic regression analysis revealed a significant positive association between SREBF2 1784G>C and ischaemic stroke; an inverse association was observed between HDL level and risk of ischaemic stroke. CONCLUSIONS: The CC genotype of the SREBF2 1784G>C polymorphism was associated with an increased risk of ischaemic stroke, possibly through decreasing the HDL level, which was inversely associated with the risk of ischaemic stroke.
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234
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Nairismägi ML, Vislovukh A, Meng Q, Kratassiouk G, Beldiman C, Petretich M, Groisman R, Füchtbauer EM, Harel-Bellan A, Groisman I. Translational control of TWIST1 expression in MCF-10A cell lines recapitulating breast cancer progression. Oncogene 2012; 31:4960-6. [PMID: 22266852 DOI: 10.1038/onc.2011.650] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
TWIST1 is a highly conserved basic helix-loop-helix transcription factor that promotes epithelial-mesenchymal transition (EMT). Its misregulation has been observed in various types of tumors. Using the MCF-10A-series of cell lines that recapitulate the early stages of breast cancer formation and EMT, we found TWIST1 to be upregulated during EMT and downregulated early in carcinogenesis. The TWIST1 3'UTR contains putative regulatory elements, including miRNA target sites and two cytoplasmic polyadenylation elements (CPE). We found that miR-580, CPEB1, and CPEB2 act as negative regulators of TWIST1 expression in a sequence-specific and additive/cooperative manner.
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235
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Zhang Q, Chen G, Yang Y, Shen X, Zhang Y, Li C, Yu R, Luo Y, Li D, Meng Q. Toward highly efficient CdS/CdSe quantum dots-sensitized solar cells incorporating ordered photoanodes on transparent conductive substrates. Phys Chem Chem Phys 2012; 14:6479-86. [DOI: 10.1039/c2cp40568g] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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236
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Wang M, Gong W, Meng Q, Zhang Y. Electrochemical DNA impedance biosensor for the detection of DNA hybridization with polymeric film, single walled carbon nanotubes modified glassy carbon electrode. RUSS J ELECTROCHEM+ 2011. [DOI: 10.1134/s1023193511120123] [Citation(s) in RCA: 8] [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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237
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Wang Y, Huang M, Meng Q, Wang Y. Effects of atmospheric hydrogen sulfide concentration on growth and meat quality in broiler chickens. Poult Sci 2011; 90:2409-14. [DOI: 10.3382/ps.2011-01387] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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238
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Meng Q, Li M, Silberg MA, Conrad F, Bettencourt J, To R, Huang C, Ma J, Meyer K, Shimizu R, Cao L, Tomic MT, Marks JD. Domain-based assays of individual antibody concentrations in an oligoclonal combination targeting a single protein. Anal Biochem 2011; 421:351-61. [PMID: 22037290 DOI: 10.1016/j.ab.2011.09.030] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2011] [Revised: 09/23/2011] [Accepted: 09/30/2011] [Indexed: 10/17/2022]
Abstract
Quantitation of individual monoclonal antibodies (mAbs) within a combined antibody drug product is required for preclinical and clinical drug development, including pharmacokinetic (PK), toxicology, stability, and biochemical characterization studies of such drugs. We have developed an antitoxin, XOMA 3AB, consisting of three recombinant mAbs that potently neutralize the known subtypes of type A botulinum neurotoxin (BoNT/A). The three mAbs bind nonoverlapping BoNT/A epitopes with high affinity. XOMA 3AB is being developed as a treatment for botulism resulting from BoNT/A. To develop antibody-specific assays, we cloned, expressed, and purified BoNT/A domains from Escherichia coli. Each mAb bound only to its specific domain with affinity comparable to the binding to holotoxin. mAb-specific domains were used to develop an enzyme-linked immunosorbent assay (ELISA) for characterization of the integrity and binding activity of the three mAbs in the drug product. An electrochemiluminescence bridging assay that is robust to interference from components in serum was also developed, and we demonstrate that it can be used for PK assays. This type of antigen engineering to generate mAb-specific domains is a general method allowing quantitation and characterization of individual mAbs in a mAb cocktail that binds the same protein and is superior to anti-idiotype approaches.
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239
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Qin D, Zhang Y, Huang S, Luo Y, Li D, Meng Q. Ionic liquid/polymer composite electrolytes by in situ photopolymerization and their application in dye-sensitized solar cells. Electrochim Acta 2011. [DOI: 10.1016/j.electacta.2011.07.065] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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240
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Yang L, Zhang Y, Luo J, Luo Y, Gao K, Li D, Meng Q. Real-time studies of evaporation-induced colloidal self-assembly by optical microspectroscopy. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2011; 84:031605. [PMID: 22060383 DOI: 10.1103/physreve.84.031605] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2011] [Revised: 07/20/2011] [Indexed: 05/31/2023]
Abstract
Real-time monitoring of the whole growth process of evaporation-induced colloidal self-assembly has been conducted using an optical microspectroscopy setup. Our observations suggest that the assembly process can be divided into three different growth stages as evidenced by the variations detected in the reflectance spectra. The thickness variation of the growing colloidal crystal was monitored by examining the Fabry-Perot fringes in the reflectance spectra. Furthermore, the scalar wave approximation was utilized to analyze the evolution of optical properties with growth. More detailed information, including the time dependence of number of layers and volume fraction of water, has been revealed by comparing the experimental and calculated reflectance spectra. The present work demonstrates that in situ real-time microspectroscopy is a promising technique for monitoring and investigating the dynamic process of colloidal self-assembly.
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Chen G, Long X, Meng Q, Long S. Poster 59: Animal Model Study of Condylar Hyperplasia. J Oral Maxillofac Surg 2011. [DOI: 10.1016/j.joms.2011.06.159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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242
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Tian JW, Jiang WL, Zhong Y, Meng Q, Gai Y, Zhu HB, Hou J, Xing Y, Li YX. Preclinical pharmacology of TP1, a novel potent triple reuptake inhibitor with antidepressant properties. Neuroscience 2011; 196:124-30. [PMID: 21925241 DOI: 10.1016/j.neuroscience.2011.08.064] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2011] [Revised: 08/16/2011] [Accepted: 08/29/2011] [Indexed: 10/17/2022]
Abstract
Triple reuptake inhibitors (TRIs) that block the dopamine transporter (DAT), norepinephrine transporter (NET), and serotonin transporter (SERT) are being developed as a new class of antidepressant that may have better efficacy and fewer side effects compared with traditional antidepressants. The purpose of this study was to characterize a new chemical entity, 4-[2-(dimethylamino)-1-(1-hydroxycyclohexyl)ethyl] phenyl 4-methoxybenzoate hydrochloride (TP1). TP1 was designed as a prodrug of desvenlafaxine. Competitive radioligand binding assays were performed using cells expressing the human dopamine (DA) transporter (hDAT), the human serotonin (5-HT) transporter (hSERT), and the human norepinephrine (NE) transporter (hNET) with K(i) values for TP1 of 190 nM, 2076 nM, and 1023 nM, respectively. Uptake assays were performed with IC(50) values for TP1 of 712 nM, 521 nM, and 628 nM, respectively. TP1 (0.06 mmol/kg, orally) rapidly penetrated rat brain and hypothalamus, translated into desvenlafaxine within 1 h, and demonstrated higher bioavailability and better pharmacokinetic properties than desvenlafaxine succinate (DVS). TP1 (0.06 mmol/kg, orally) significantly increased extracellular levels of DA, NE, and 5-HT compared with baseline in the rat hypothalamus by microdialysis assay. In dose-response assays, oral administration of TP1 reduced the time of immobility in a dose-dependent manner during tail suspension test and forced swimming test (FST). This antidepressant-like effect manifests in the absence of significant increases in motor activity even at doses of up to 32 mg/kg. The ability of TP1 to inhibit the reuptake of three biogenic amines closely linked to the etiology of depression may result in a therapeutic profile different from antidepressants that inhibit the reuptake of serotonin and/or NE.
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243
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Huang S, Guo X, Huang X, Zhang Q, Sun H, Li D, Luo Y, Meng Q. Highly efficient fibrous dye-sensitized solar cells based on TiO2 nanotube arrays. NANOTECHNOLOGY 2011; 22:315402. [PMID: 21737872 DOI: 10.1088/0957-4484/22/31/315402] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The structure of fibrous dye-sensitized solar cells, which were constructed by a TiO(2) nanotube array on Ti wire as the photoanode twisted by a Pt wire counter electrode, has been first systematically investigated by accurately controlling the thread pitch distance of screwed Pt wire. It has been revealed that the thread pitch will strongly influence the photovoltaic performance and kinetic processes in fibrous solar cells. The effect of the length of the TiO(2) nanotube on cell performance has also been discussed. After optimization, a relatively universal optimized thread pitch value of 1 mm for fibrous DSCs has been proved and the light-to-electricity conversion efficiency has been remarkably improved to 5.84%.
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244
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Fang C, Meng Q, Wu H, Eid G, Zhang G, Zhang X, Yang S, Huang K, Lee TH, Corrigan CJ, Ying S. Resistin-like molecule-β is a human airway remodelling mediator. Eur Respir J 2011; 39:458-66. [PMID: 21828035 DOI: 10.1183/09031936.00107811] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Though implicated in vascular remodelling, a role for the resistin-like molecule (RELM)-β in human airway remodelling remains unexplored. We hypothesised that RELM-β expression is increased in the airways of asthmatics and regulates airways epithelial cell function. Expression of RELM-β in the bronchial mucosa and its concentrations in bronchoalveolar lavage (BAL) fluid from asthmatics and controls were measured by immunohistochemistry and ELISA, respectively. Proliferation assays, Western blotting, ELISA and real-time PCR were employed to detect effects of RELM-β on airways epithelial cells. RELM-β expression was increased in the bronchial mucosa and BAL fluid of asthmatics compared with controls. In the asthmatics, the numbers of mucosal RELM-β+ cells correlated inversely with forced expiratory volume in 1 s (r=-0.531, p=0.016), while the numbers of epithelial RELM-β+ cells correlated positively with those of mucin (MUC)5AC+ cells. In vitro, interleukin-13 enhanced RELM-β expression by primary human airways epithelial cells, while RELM-β itself acted on these cells to induce proliferation, expression of MUC5AC, extracellular signal-regulated kinase (ERK)/mitogen-activated protein kinase (MAPK)-phosphatidylinositol 3-kinase (PI3K)/Akt phosphorylation and elevated expression of transforming growth factor-β2, epidermal growth factor and vascular endothelial growth factor. RELM-β has the potential to contribute to airway remodelling in diseases such as asthma by acting on epithelial cells to increase proliferation, mucin and growth factor production, at least partly via ERK/MAPK-PI3K/Akt signalling pathways.
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Liu T, Meng Q, Wang C, Liu Q, Guo X, Liu K. OL-027 Changes in expression of renal Oat1, Oat3 and Mrp2 in ANIT-induced cholestatic hepatitis in rat after treatment of JBP485. Int J Infect Dis 2011. [DOI: 10.1016/s1201-9712(11)60086-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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246
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Abstract
Pituicytoma is a rare primary tumour of the neurohypophysis or infundibulum, which masquerades as a pituitary adenoma. We present a pituicytoma case in a 45-year-old female presenting as a focal lesion of the neurohypophysis. This case report reviews the clinical, neuroimaging and histopathological features of this rare tumour in order to understand it better.
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247
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Dai J, Meng Q. Differential function of protective agents at each stage of the hypothermic preservation of hepatocytes. J Biochem 2011; 149:739-45. [DOI: 10.1093/jb/mvr030] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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248
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Yang L, Gao K, Luo Y, Luo J, Li D, Meng Q. In situ observation and measurement of evaporation-induced self-assembly under controlled pressure and temperature. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:1700-1706. [PMID: 21192705 DOI: 10.1021/la104338a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
In situ observations of evaporation-induced colloidal self-assembly and in situ measurement of mass transfer process were carried out under a temperature and pressure controlling system. The growth processes of colloidal crystals in different cuvettes recorded by direct video observations revealed that solvent flow around the pore space of the crystal played a key role. By changing the circumstances (temperature and pressure) of the self-assembly system and properties of fluid (viscosity), different evaporation rate of solvent and growth rate of colloidal crystals were measured directly. It turned out that both evaporation rate and growth rate as functions of temperature and pressure fit Stefan's law well. Furthermore, the transfer process of particles in the fluid flow was determined by the fluid-dynamic characteristics, which can be analyzed by the Reynolds number. The results obtained provide an insight into the growth mechanisms of self-assembly and theoretical basis for optimizing the experimental growth conditions of colloidal crystals.
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Corrigan C, Napoli R, Meng Q, Fang C, Wu H, Tochiki K, Reay V, Lee T, Ying S. Reduced Expression Of Prostaglandin E (pge2) Receptor Ep2 On Bronchial Mucosal Leukocytes In Aspirin Sensitive Asthma (asa) Compared With Non-aspirin-sensitive Asthma (nasa) And Healthy Controls (hc). J Allergy Clin Immunol 2011. [DOI: 10.1016/j.jaci.2010.12.1071] [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]
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250
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Wang W, Meng Q, Fang C, Reay V, Wu H, Fan Y, Lv Z, An Y, Wang Y, Liu Y. Angiogenesis In Asthma: A Novel Potential Role For Il-25. J Allergy Clin Immunol 2011. [DOI: 10.1016/j.jaci.2010.12.875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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