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Fan W, Yang YS, Lu Y, Du XQ, Zhang GX. Hydrogeo-chemical impacts of air sparging remediation on a semi-confined aquifer: evidences from field monitoring and modeling. CHEMOSPHERE 2013; 90:1419-1426. [PMID: 23021385 DOI: 10.1016/j.chemosphere.2012.08.046] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2012] [Revised: 08/23/2012] [Accepted: 08/26/2012] [Indexed: 06/01/2023]
Abstract
Air sparging (AS) was explored for remediation of a petroleum contaminated semi-confined groundwater system in NE China. Physical, hydro-chemical and hydraulic behaviors in subsurface environment during AS were investigated with support of modeling to understand the hydrogeo-chemical impacts of AS on the aquifer. The responses of groundwater, dissolved oxygen and temperature indicated that the radius of influence of AS was up to 8-9 m, and a 3D boundary of the zone of influence (ZOI) was accordingly obtained with volume of 362 m(3). Water mounding unlike normal observations was featured by continuous up-lift and blocked dissipation. AS induced water displacement was calculated showing no obvious spreading of contaminant plume under this AS condition. Slug tests were employed before and after AS to reveal that the physical perturbation led to sharp increase in permeability and porosity. Modeling indicated that the regional groundwater flow field was not affected by AS except the physical perturbation in ZOI. Hydro-chemically increase of pH and Eh, and reduction of TDS, electrical conductivity and bicarbonate were observed in ZOI during AS. PHREEQC modeling inferred that these chemical phenomena were induced by the inorganic carbon transfer during air mixing.
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Deng M, Wu S, Huang S, Zheng L, Fan W, Chen Z. A Phase I/II Clinical Trial of Dose Escalation on Biological Target Volume With Intensity Modulated Radiation Therapy: The Long-term Results. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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128
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Chen G, Fan W, Mishra S, El-Atem A, Schuetz M, Xiao Y. Tooth fracture risk analysis based on a new finite element dental structure models using micro-CT data. Comput Biol Med 2012; 42:957-63. [DOI: 10.1016/j.compbiomed.2012.07.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2011] [Accepted: 07/09/2012] [Indexed: 10/28/2022]
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Fan W, Yi QL, Xi G, Goldman M, Germain M, O'Brien S. The impact of increasing the upper age limit of donation on the eligible blood donor population in Canada. Transfus Med 2012; 22:395-403. [DOI: 10.1111/j.1365-3148.2012.01184.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2011] [Revised: 03/20/2012] [Accepted: 08/17/2012] [Indexed: 11/29/2022]
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130
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Li L, Li SW, Huang ZY, Wang Y, Xiao Z, Fan W. Study of the outcome of in vitro fertilization and embryo transfer in female patients with latent syphilis. Fertil Steril 2012. [DOI: 10.1016/j.fertnstert.2012.07.973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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131
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Dai Y, Pang J, Gong H, Fan W, Zhang TM. Roles and Tissue Source of Adiponectin Involved in Lifestyle Modifications. J Gerontol A Biol Sci Med Sci 2012; 68:117-28. [DOI: 10.1093/gerona/gls131] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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Smith AG, Fan W, Regen L, Warnock S, Sprague M, Williams R, Nisperos B, Zhao LP, Loken MR, Hansen JA, Pereira S. Somatic mutations in the HLA genes of patients with hematological malignancy. ACTA ACUST UNITED AC 2012; 79:359-66. [PMID: 22489945 DOI: 10.1111/j.1399-0039.2012.01868.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Fan W, Downes M, Atkins A, Yu R, Evans RM. Nuclear receptors and AMPK: resetting metabolism. COLD SPRING HARBOR SYMPOSIA ON QUANTITATIVE BIOLOGY 2012; 76:17-22. [PMID: 22411605 PMCID: PMC3870013 DOI: 10.1101/sqb.2012.76.010470] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Obesity, and in particular central adiposity, is a key feature of metabolic syndrome, which includes trends toward increased triglycerides, insulin resistance, high blood pressure, hypercholesterolemia, and heart disease. It has a prevalence of 25% or more and is a dominant component of the health care budgets in Western societies. In addition to genetic causes, high-fat diets and disrupted sleep patterns have major influences on the development of metabolic syndrome. Recent studies have demonstrated active roles for the nuclear receptor superfamily and the energy-sensing kinase adenosine monophosphate (AMP)-activated protein kinase (AMPK) in regulating metabolism and circadian rhythm. In this chapter, we review these findings and attempt to develop a better understanding of the interplay between metabolism and circadian rhythm and their coordinated regulation by nuclear receptors and AMPK. This supraregulatory network may be considered a target for novel therapeutic applications against metabolic syndrome.
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Li J, Fan W, Yang J, Wang Y, Chen W, Xie X, Lu M. Abstract No. 39: Transcatheter arterial chemoembolization (TACE) combined percutaneous thermal ablation in large hepatocellular carcinoma: clinical observation of the efficacy and predictors of prognostic factors. J Vasc Interv Radiol 2012. [DOI: 10.1016/j.jvir.2011.12.074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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135
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Li J, Fan W, Yang J, Wang Y, Chen W, Zhang Y. Abstract No. 121: Experimental study on the transcriptional targeting gene therapy of double suicide gene driven by hTERT promotor in hepatoma carcinoma. J Vasc Interv Radiol 2012. [DOI: 10.1016/j.jvir.2011.12.163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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136
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Sui M, Zhang H, Fan W. The role of estrogen and estrogen receptors in chemoresistance. Curr Med Chem 2012; 18:4674-83. [PMID: 21867480 DOI: 10.2174/092986711797379348] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2011] [Revised: 08/01/2011] [Accepted: 08/03/2011] [Indexed: 11/22/2022]
Abstract
Drug resistance is one of the major obstacles limiting the success of cancer chemotherapy. Biological mechanisms contributing to drug resistance may be present de novo and related to inherent features or may be raised after exposure to anticancer drugs. In recent years, both clinical observations and experimental studies suggested that steroid hormones and their receptors might also affect the therapeutic efficacy of antineoplastic drugs. Estrogens and estrogen receptors (ER) are well-known for their critical roles in the development and progression of breast tumors. It has long been known that breast tumors expressing ERα protein (ERα+) behave in a fundamentally different fashion than ERα-negative (ERα-) tumors with regard to their responses to hormonal therapy. Data obtained from both laboratory and clinical investigations suggested that some chemotherapeutic agents are clearly less effective in ERα+ tumors than ERα- tumors, although the mechanisms of ERα-mediated chemoresistance are not entirely clear. Moreover, recent studies from our laboratory and others demonstrated that the combination of antiestrogenic agents with chemotherapeutic drugs is of significant therapeutic benefit in ERα+ breast cancer over chemotherapy alone. In addition, the ERα-derived peptides, microRNAs specifically targeting ERα, as well as agents targeting estrogen-related receptors (ERRs) may hold promise to sensitize ERα+ breast tumors to chemotherapy. Considering that ERs are expressed in ˜ 65% of human breast cancer, the ERα-mediated chemoresistance has become a big challenge for clinical treatment. The hope to overcome this drug resistance relies on further clarification of specific pathways or molecules contributing to the resistance. More exhaustive and systematic studies are essential to reach deeper understandings on the underlying mechanisms and to develop novel approaches to sensitize ERα+ breast tumors to chemotherapy.
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O’Brien SF, Yi QL, Fan W, Scalia V, Fearon MA, Allain JP. Current incidence and residual risk of HIV, HBV and HCV at Canadian Blood Services. Vox Sang 2012; 103:83-6. [DOI: 10.1111/j.1423-0410.2012.01584.x] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Xia HM, Wang ZP, Fan W, Wijaya A, Wang W, Wang ZF. Converting steady laminar flow to oscillatory flow through a hydroelasticity approach at microscales. LAB ON A CHIP 2012; 12:60-4. [PMID: 22048176 DOI: 10.1039/c1lc20667b] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
We report a hydroelasticity-based microfluidic oscillator that converts otherwise steady laminar flow to oscillatory flow. It incorporates an elastic diaphragm to enhance nonlinearity of the flow. Negative differential flow resistance is observed. High-frequency oscillatory flow is produced passively through interactions among hydrodynamic, elastic and inertial forces, without resorting to external actuators and control equipment. Driven by fluid flow and pressure, this device can operate in either steady laminar flow or oscillatory flow states, or work as a valve. Its applications for flow control and operation, and mixing enhancement are demonstrated.
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Wang X, Fan W, Ding J, Jin L, Hu J, Li W, Hu SC, Tanner C, Zhang J, Lipton S, Gao D, Ray R, Thomas D, Checkoway H. 1.117 ENDOTOXIN AND RISK OF PARKINSONISM AMONG WOMEN TEXTILE WORKERS IN SHANGHAI, CHINA: STUDY DESIGN AND ENROLLMENT PROGRESS. Parkinsonism Relat Disord 2012. [DOI: 10.1016/s1353-8020(11)70231-0] [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: 10/14/2022]
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140
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Li Z, Chen Y, Mu D, Yuan J, Shi Y, Zhang H, Gan J, Li N, Hu X, Liu B, Yang B, Fan W. Comparison of the two major classes of assembly algorithms: overlap-layout-consensus and de-bruijn-graph. Brief Funct Genomics 2011; 11:25-37. [DOI: 10.1093/bfgp/elr035] [Citation(s) in RCA: 146] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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141
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Li G, Yang X, Zhang Y, Liu H, Zhang W, Shen Y, Fan W, Lu Z, Lu D. Comparative proteomics study of freshly isolated, in vitro cultured, and proliferating islet preparation cells. J Endocrinol Invest 2011; 34:816-23. [PMID: 20926920 DOI: 10.3275/7275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND In vitro islet expansion has recently drawn interest for its potential application in diabetes therapy, while how islet cells adapt to in vitro circumstances is not quite clear. AIM Proteomics changes of cultivated islet cells under different conditions were examined in this study. MATERIAL/SUBJECTS AND METHODS A comparative proteomics study was performed on fresh isolated islet cells, cultured cells and in vitro proliferating islet cells stimulated by basic fibroblast growth factor via electrophoresis and liquid chromatography in tandem with mass spectrometry. RESULTS In total, 1897 proteins were identified in this study. Hierarchical analysis revealed substantial changes in the proteome during cultivation but relatively less difference between different culture conditions. Over 100 proteins showed significantly different expression levels between groups, most of which are involved in metabolism or cell process pathways. Overall, the detected proteins were involved in 152 known pathways. Furthermore, in-depth investigation suggested that some proteins, such as extracellular signal-regulated protein kinases and Rac, might play key roles in the proliferation, apoptosis, and differentiation of in vitro cultured islet cells. CONCLUSION We established comparative proteome references of fresh and cultured islet cells, which could provide useful information for future islet transplantation strategy.
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Fan W, Ping Y. Association of risk factors for cardiovascular disease and glomerular filtration rate: a community-based study of 4925 adults in Beijing. BRITISH HEART JOURNAL 2011. [DOI: 10.1136/heartjnl-2011-300867.282] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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143
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Fan W, Ping Y, Leiming L, Ruyi X, Yongyi B, Hongmei W. Association of glomerular filtration rate with high-sensitivity cardiac troponin T in a community-based population study in Beijing. BRITISH HEART JOURNAL 2011. [DOI: 10.1136/heartjnl-2011-300867.281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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144
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Dou KP, Fan W, Niehaus TA, Frauenheim T, Wang CL, Zhang XH, Zhang RQ. Electron Transport Suppression from Tip-π State Interaction on Si(100)-2 × 1 Surfaces. J Chem Theory Comput 2011; 7:707-12. [PMID: 26596302 DOI: 10.1021/ct1004998] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We investigate the electron transport between a scanning tunneling microscope tip and Si(100)-2 × 1 surfaces with four distinct configurations by performing calculations using density functional theory and the nonequilibrium Green's function method. Interestingly, we find that the conducting mechanism is altered when the tip-surface distance varies from large to small. At a distance larger than the critical value of 4.06 Å, the conductance is increased with a reduction in distance owing to the π state arising from the silicon dimers immediately under the tip; this in turn plays a key role in facilitating a large transmission probability. In contrast, when the tip is closer to the substrate, the conductance is substantially decreased because the π state is suppressed by the interaction with the tip, and its contribution in the tunneling channels is considerably reduced.
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Liu WT, Cao J, Fan W, Hao Z, Martin MC, Shen YR, Wu J, Wang F. Intrinsic optical properties of vanadium dioxide near the insulator-metal transition. NANO LETTERS 2011; 11:466-470. [PMID: 21166443 DOI: 10.1021/nl1032205] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We studied the insulator-metal transition (IMT) in single-domain, single crystalline vanadium dioxide (VO(2)) microbeams with infrared microspectroscopy. The unique nature of such samples allowed us to probe the intrinsic behavior of both insulating and metallic phases in the close vicinity of IMT, and investigate the IMT driven by either strain or temperature independently. We found that the VO(2) insulating band gap narrows rapidly upon heating, and the infrared response undergoes an abrupt transition at both strain- and temperature-induced IMT. The results are consistent with recent studies attributing the opening of VO(2) insulating band gap to a correlation-assisted Peierls transition.
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Abstract
Oral Diseases (2011) 17, 252-257 Heme oxygenase (HO) system catabolizes heme into three products: carbon monoxide (CO), biliverdin/bilirubin and free iron, which consists of three forms identified to date: the oxidative stress-inducible protein HO-1 and the constitutive isozymes HO-2 and HO-3. HO has been involved in many physiological and pathophysiological processes, ranging from Alzheimer's disease to cancer. The interest in HO system by scientists and clinicians involved with the oral and maxillofacial region is fairly recent, and few papers currently cited on HO relate to diseases in this anatomical area. This review will focus on the current understanding of the physiological significance of HO-1 induction and its possible roles in the oral diseases studied to date. The implications for possible therapeutic manipulation of HO are also discussed.
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Shen J, Han Z, Guo L, Fan W. [Study on correlation between physical and chemical parameters of oil-bearing water bodies and ultrafiltration membrane flux in four simulative system of traditional Chinese medicine volatile oil]. ZHONGGUO ZHONG YAO ZA ZHI = ZHONGGUO ZHONGYAO ZAZHI = CHINA JOURNAL OF CHINESE MATERIA MEDICA 2010; 35:2273-2276. [PMID: 21137336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
OBJECTIVE To explore the correlation between physical and chemical parameters of oil-bearing water bodies and ultrafiltration flux in the four simulative system of traditional Chinese medicine ( TCM) volatile oil. METHOD Four simulative systems of TCM oil-bearing water bodies such as Tsao-ko Amomum Fruit were selected as the experimental subjects. The membrane separating under the best conditions was carried out, membrane flux, physical and chemical parameters of stock solution and permeate were collected, and SPSS computer software was used for data processing. RESULT The membrane separation significantly changed the physical and chemical properties of oil-bearing water bodies, resulted in lower electrical conductivity and turbidity and pH value increased; Physical and chemical parameters also affected the membrane process significantly, and the flux varied with the electrical conductivity, pH, turbidity and viscosity. CONCLUSION There is significant correlation between physical and chemical parameters of oil-bearing water bodies and their ultrafiltration flux in the four simulative systems of TCM volatile oil.
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Cao J, Gu Y, Fan W, Chen LQ, Ogletree DF, Chen K, Tamura N, Kunz M, Barrett C, Seidel J, Wu J. Extended mapping and exploration of the vanadium dioxide stress-temperature phase diagram. NANO LETTERS 2010; 10:2667-2673. [PMID: 20586406 DOI: 10.1021/nl101457k] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Single-crystal micro- and nanomaterials often exhibit higher yield strength than their bulk counterparts. This enhancement is widely recognized in structural materials but is rarely exploited to probe fundamental physics of electronic materials. Vanadium dioxide exhibits coupled electronic and structural phase transitions that involve different structures existing at different strain states. Full understanding of the driving mechanism of these coupled transitions necessitates concurrent structural and electrical measurements over a wide phase space. Taking advantages of the superior mechanical property of micro/nanocrystals of VO(2), we map and explore its stress-temperature phase diagram over a phase space that is more than an order of magnitude broader than previously attained. New structural and electronic aspects were observed crossing phase boundaries at high-strain states. Our work shows that the actively tuning strain in micro/nanoscale electronic materials provides an effective route to investigate their fundamental properties beyond what can be accessed in their bulk counterpart.
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Ma PC, Fan W, Tang Z, Hafez-Khayyata S, Flask CA, Koon HB. Role of antiapoptotic STAT3 and BCL-2 signaling in promoting lung tumor cells to survive against combined MET-/EGFR-targeted inhibitors. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.10644] [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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150
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Fan W, Li X, Wang W, Mo J, Kaplan H, Cooper N. Early Involvement of Immune/Inflammatory Response Genes in Retinal Degeneration in DBA/2J Mice. OPHTHALMOLOGY AND EYE DISEASES 2010. [DOI: 10.1177/117917211000200005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Purpose The DBA/2J (D2) mouse carries mutations in two of its genes, Tyrp1 and Gpnmb. These alterations result in the development of an immune response in the iris, leading to iris atrophy and pigment dispersion. The development of elevated intraocular pressure (IOP) in this model of glaucoma is considered to be a significant factor leading to the death of retinal ganglion cells (RGCs). Changes in gene expression in the retina have already been correlated with the appearance of elevated IOP in the D2 mouse. The purpose of the present study was to determine if any changes in gene expression occur prior to the development of IOP. Methods The IOP was measured monthly using a rebound tonometer in D2 and age-matched C57/BL6 (B6) mice (normal controls). D2 animals with normal IOP at 2 and 4 M were used. In addition, mice at the age of 6–7 M were included to look for any trends in gene expression that might develop during the progression of the disease. Separate RNA samples were prepared from each of three individual retinas for each age, and gene expression profiles were determined with the aid of mouse oligonucleotide arrays (Agilent). A subset of genes was examined with the aid of real-time PCR. Immunocytochemistry was used to visualize changes in the retina for some of the gene-products. Results Four hundred and thirteen oligonucleotide probes were differentially expressed in the retinas of 4 M versus 2 M old D2 mice. The most significantly up-regulated genes (181) were associated with immune responses including interferon signaling, the complement system and the antigen presentation pathway, whereas the down-regulated genes (232) were linked to pathways related to cell death and known neurological diseases/disorders. These particular changes were not revealed in the age-matched B6 mice. By 6 M, when IOP started to increase in many of the D2 mice, more robust changes of these same genes were observed. Changes in the levels of selected genes, representative of different functions/pathways, were validated with RT-PCR, and changes in glial responses were visualized in the retina with immunocytochemistry. Conclusions The results showed that the expression of genes related to the immune response and acute stress were altered independently of the development of elevated IOP, and indicated early involvement of the immune system in the onset of the disease. The later development of elevated IOP, observed in this animal model, was coincident with continued changes in expression of genes observed at earlier time points. Further studies are warranted to identify the roles of specific genes identified here with respect to the death of the RGCs.
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