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Pan F, Blizzard L, Tian J, Cicuttini F, Winzenberg T, Ding C, Jones G. The interaction between weight and family history of total knee replacement with knee cartilage: a 10-year prospective study. Osteoarthritis Cartilage 2017; 25:227-233. [PMID: 27789341 DOI: 10.1016/j.joca.2016.10.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 10/11/2016] [Accepted: 10/17/2016] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Although being overweight or obese is an important risk factor for the development of knee osteoarthritis (OA), the interplay between weight and genetic factors remains unclear. This study aimed to examine the associations between weight and knee cartilage volume/defects over 10 years in offspring having at least one parent with a total knee replacement (TKR) for primary knee OA and in controls without a knee OA family history. METHOD 367 participants (183 offspring and 184 controls) aged from 26 to 61 years were recruited at baseline, and followed at 2 and 10 years later. T1-weighted magnetic resonance imaging (MRI) of the right knee was used to measure cartilage volume/defects at each time-point. Mixed-effects models were used with adjustment for potential confounders. RESULTS Study participants were middle-age adults (mean age 45 years, mean weight 77.5 kg at baseline). In multivariable analysis, increasing body weight was deleteriously associated with medial tibiofemoral cartilage volume (β = -0.28 ml, per 1 SD increase, 95% CI -0.49 to -0.07) and presence of medial tibiofemoral cartilage defects (RR = 1.27, per 1 SD increase, 95% CI 1.07 to 1.51) in offspring over 10 years. Similar associations were observed for lateral tibiofemoral cartilage volume (β = -0.19 ml, P = 0.059), and defects (RR = 1.24, P = 0.049). However, there were no statistically significant associations between weight and cartilage volume or defects in controls. CONCLUSION The adverse effects of increasing weight are stronger in the offspring of people with knee replacement for knee OA suggesting genetics-environment interaction with regard to overweight/obesity in the pathogenesis of knee OA particularly in the early stages.
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Guski S, Albrecht M, Willms T, Albrecht M, Nabeshima T, Pan F, Puttreddy R, Rissanen K. Extended dipyrrin ligands: candidates for optical metal ion detection under competitive conditions. Chem Commun (Camb) 2017; 53:3213-3215. [DOI: 10.1039/c7cc00672a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Extended acyl hydrazine based dipyrrine ligands lead to a specific colour response upon addition of metal ions.
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Chang J, Pan F, Tang Q, Wu W, Chen M, Lu C, Ding H, Hu L, Chen D, Xia Y, Wang X. eNOS gene T786C, G894T and 4a4b polymorphisms and male infertility susceptibility: a meta-analysis. Andrologia 2016; 49. [PMID: 27373555 DOI: 10.1111/and.12646] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/20/2016] [Indexed: 12/14/2022] Open
Abstract
The association between polymorphism of eNOS and male infertility in several studies was controversial. To explore a more precise estimation of the association, a meta-analysis of eight case-control studies, including 1,968 cases and 1,539 controls, were selected. The meta-analysis was conducted by calculating the pooled odds ratio (OR) with a 95% confidence interval (95% CI). Overall, the association between T786C and risk of male infertility was obvious (TC vs. TT: OR, 1.20; 95% CI, 1.01-1.42; CC vs. TT: OR, 3.37; 95% CI, 1.65-6.87; TC/CC vs. TT: OR, 1.47; 95% CI, 1.25-1.73; CC vs. TT/TC OR, 3.18; 95% CI, 1.54-6.56; TC vs. TT: OR, 1.65; 95% CI, 1.27-2.03). However, no overall association was observed between the other two polymorphisms of eNOS (G894T and 4a4b) and male infertility. Stratified analysis showed that significantly strong association between T786C polymorphism and semen quality was present in all three types of male infertility (azoospermia, oligozoospermia and asthenozoospermia). In the subgroup analysis based on ethnicity, both T786C and 4a4b could influence the risk of male infertility in Asian and Caucasian. Further studies of polymorphisms of eNOS with their biological functions are needed to understand the role in the development of male infertility.
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Cai G, Zhang X, Xin L, Wang L, Wang M, Yang X, Li X, Xia Q, Xu S, Ding C, Pan F. Associations between vitamin D receptor gene polymorphisms and ankylosing spondylitis in Chinese Han population: a case-control study. Osteoporos Int 2016; 27:2327-2333. [PMID: 26815041 DOI: 10.1007/s00198-016-3500-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 01/20/2016] [Indexed: 12/14/2022]
Abstract
UNLABELLED We assessed whether the vitamin D receptor gene polymorphisms (FokI, BsmI, ApaI, and TaqI) were associated with ankylosing spondylitis (AS) in a Chinese Han population. The TaqI polymorphism G allele was a risk factor in AS susceptibility. INTRODUCTION Previous studies have found that serum vitamin D levels are declined in patients with AS. The present study aims to evaluate the role of vitamin D receptor (VDR) gene polymorphisms in AS susceptibility in a Chinese Han population. METHODS Four single nucleotide polymorphisms (SNPs) in the VDR gene (FokI (rs2228570), BsmI (rs1544410), ApaI (rs7975232), and TaqI (rs731236)) were genotyped by the improved multiplex ligase detection reaction (iMLDR) method in 620 AS patients and 620 geographically and ethnically matched healthy controls. Haplotypes were constructed after linkage disequilibrium (LD) analysis. RESULTS Statistically significant difference was only found in the TaqI polymorphism between AS patients and controls. The TaqI polymorphism G allele was higher in AS group than that in controls (OR [95 % CI] = 1.624 [1.122-2.352], χ (2) = 6.705, P = 0.006). Linkage disequilibrium has been detected in TaqI and BsmI polymorphisms (D' = 0.87, r (2) = 0.70). Two novel haplotypes (H1: AC and H2: GT) were significantly associated with the risk of AS, and they play protective and risk roles in AS morbidity, respectively. CONCLUSIONS The VDR gene TaqI polymorphism G allele may be a risk factor in AS susceptibility.
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Pan F, Squibb K, Thomson R, Winzenberg T, Zebaze R, Jones G. OP0102 Genetic Effects on Trabecular and Cortical Volumetric Bone Mineral Densities and Bone Microstructure Measured by Hrpqct. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.3072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Pan F, Blizzard L, Tian J, Cicuttini F, Winzenberg T, Ding C, Jones G. SAT0425 Does Weight in The Offspring of People with A Total Knee Replacement for Severe Primary Knee Osteoarthritis Have A More Detrimental Effect on Knee Cartilage and Pain? A 10-Year Prospective Study. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.2592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Pan F, Aitken D, Tian J, Cicuttini F, Winzenberg T, Ding C, Jones G. OP0093 Does “Pain Elsewhere” Influence The Association between Knee Structural Pathology and Knee Pain? Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.3048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Cheng YX, Zhang QF, Pan F, Huang JL, Li BL, Hu M, Li MQ, Chen C. Hydroxycamptothecin shows antitumor efficacy on HeLa cells via autophagy activation mediated apoptosis in cervical cancer. EUR J GYNAECOL ONCOL 2016; 37:238-243. [PMID: 27172752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
OBJECTIVES To investigate the effect and the mechanism of anti-tumor agent hydroxycamptothecin (HCPT) on HeLa cells in cervical cancer. MATERIALS AND METHODS Autophagy and apoptosis were detected by western blotting and the transfection of GFP-LC3 shRNA as well as Hoechst staining. RESULTS The authors found that the expression of the regulators of Beclin-1, p62, and microtubule-associated protein 1 light chain 3 (LC3) upregulated and then triggered the occurrence of cell autophagy. On the other hand, HCPT could induce to the formation of autophagy and resulted in cell apoptosis after autophagy. CONCLUSION HCPT can alter cell autophagy and then trigger cell apoptosis to achieve antitumor effects.
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Song JH, Yang J, Pan F, Jin B. Differential expression of microRNAs may regulate pollen development in Brassica oleracea. GENETICS AND MOLECULAR RESEARCH 2015; 14:15024-34. [PMID: 26634464 DOI: 10.4238/2015.november.24.10] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
MicroRNAs (miRNAs) are a class of non-coding endogenous negative regulators that regulate gene expression at both the transcriptional and post-transcriptional levels. However, little is known about the expression characteristics of miRNAs during pollen development in Brassica oleracea. In this study, five known and three novel miRNAs were identified and their expression patterns were compared in the flower buds of B. oleracea using stem-loop reverse transcription polymerase chain reaction (RT-PCR) and quantitative real-time PCR. The results revealed that the eight miRNAs were constantly expressed during pollen development but exhibited different expression patterns during the five developmental stages of the flower buds between the cytoplasmic male sterile (CMS) line and its fertile maintainer. The highest miRNA expression levels occurred at the uninucleate microspore stage in the fertile line Bo01-12B and at the bicellular pollen stage in the CMS line Bo01-12A. Potential target genes for the miRNAs were predicted and analyzed, and suggested that miRNAs are involved in the regulation of target genes related to pollen development. The results of this study further our understanding of the regulatory role of miRNAs in pollen development.
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Li F, Song C, Wang YY, Cui B, Mao HJ, Peng JJ, Li SN, Wang GY, Pan F. Tilt engineering of exchange coupling at G-type SrMnO3/(La,Sr)MnO3 interfaces. Sci Rep 2015; 5:16187. [PMID: 26531154 PMCID: PMC4632028 DOI: 10.1038/srep16187] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Accepted: 10/09/2015] [Indexed: 11/09/2022] Open
Abstract
With the recent realization of hybrid improper ferroelectricity and room-temperature multiferroic by tilt engineering, "functional" octahedral tilting has become a novel concept in multifunctional perovskite oxides, showing great potential for property manipulation and device design. However, the control of magnetism by octahedral tilting has remained a challenging issue. Here a qualitative and quantitative tilt engineering of exchange coupling, one of the magnetic properties, is demonstrated at compensated G-type antiferromagnetic/ferromagnetic (SrMnO3/La2/3Sr1/3MnO3) interfaces. According to interfacial Hamiltonian, exchange bias (EB) in this system originates from an in-plane antiphase rotation (a(-)) in G-type antiferromagnetic layer. Based on first-principles calculation, tilt patterns in SrMnO3 are artificially designed in experiment with different epitaxial strain and a much stronger EB is attained in the tensile heterostructure than the compressive counterpart. By controlling the magnitude of octahedral tilting, the manipulation of exchange coupling is even performed in a quantitative manner, as expected in the theoretical estimation. This work realized the combination of tilt engineering and exchange coupling, which might be significant for the development of multifunctional materials and antiferromagnetic spintronics.
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Dong WS, Zeng F, Lu SH, Liu A, Li XJ, Pan F. Frequency-dependent learning achieved using semiconducting polymer/electrolyte composite cells. NANOSCALE 2015; 7:16880-16889. [PMID: 26412715 DOI: 10.1039/c5nr02891d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Frequency-dependent learning has been achieved using semiconducting polymer/electrolyte composite cells. The cells composed of polymer/electrolyte double layers realized the conventional spike-rate-dependent plasticity (SRDP) learning model. These cells responded to depression upon low-frequency stimulation and to potentiation upon high-frequency stimulation and presented long-term memory. The transition threshold θm from depression to potentiation varied depending on the previous stimulations. A nanostructure resembling a bio-synapse in its transport passages was demonstrated and a random channel model was proposed to describe the ionic kinetics at the polymer/electrolyte interface during and after stimulations with various frequencies, accounting for the observed SRDP.
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Wang J, Antony B, Zhu Z, Han W, Pan F, Wang X, Jin X, Liu Z, Cicuttini F, Jones G, Ding C. Association of patellar bone marrow lesions with knee pain, patellar cartilage defect and patellar cartilage volume loss in older adults: a cohort study. Osteoarthritis Cartilage 2015; 23:1330-6. [PMID: 25724258 DOI: 10.1016/j.joca.2015.02.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Revised: 01/22/2015] [Accepted: 02/13/2015] [Indexed: 02/02/2023]
Abstract
AIM To examine the cross-sectional and longitudinal associations of patellar bone marrow lesion (BMLs) with knee pain, cartilage defects and cartilage volume in older adults. METHODS A total of 904 randomly selected subjects (mean 62.4 years, 49.9% female) were studied. Fat suppressed T1-weighted spoiled gradient recall and T2-weighted fast spin echo magnetic resonance imaging (MRI) sequences were used to assess cartilage volume, cartilage defects and/or BMLs at baseline (n = 904) and 2.6 (range: 1.4-4.8) years' follow-up (n = 414). Knee pain was assessed by self-administered Western Ontario McMaster Osteoarthritis Index (WOMAC) questionnaire at baseline (n = 904) and follow-up (n = 790). RESULTS The prevalence of any patellar BMLs was 19% and was higher in those with tibiofemoral BMLs. In multivariable analyses, patellar BMLs were positively associated with any knee pain at baseline and an increase in knee pain when going up/down stairs (odds ratio (OR): 1.67, 95% confidence interval (CI): 1.08, 2.59) but not with other knee pain subscales. Patella BMLs were also associated with patellar cartilage defects both at baseline and change over time (OR: 1.76, 95% CI: 1.00, 3.70) but not tibiofemoral defects. Patellar BMLs were negatively associated with baseline and change in patella cartilage volume (β: -2.10%, 95% CI: -3.39%, -0.80%). These associations remained significant after further adjustment for tibiofemoral BMLs. CONCLUSIONS Patellar BMLs were consistently associated with increased knee pain especially going up/down stairs, increased patellar cartilage defects, and decreased patellar cartilage volume cross-sectionally and longitudinally, suggesting a predominantly compartment specific role for patellar BMLs.
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Cai G, Xia Q, Fan D, Li X, Ding N, Hu Y, Yang X, Liu L, Xin L, Wang L, Xu S, Xu J, Zou Y, Ding C, Pan F. Association between DEFB103 gene copy number variation and ankylosing spondylitis: a case-control study. ACTA ACUST UNITED AC 2015. [PMID: 26224324 DOI: 10.1111/tan.12630] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In this brief communication, we investigate the role of DEFB103 gene copy number variation (CNV) in ankylosing spondylitis (AS) susceptibility. A total of 807 Chinese individuals including 406 AS patients and 401 controls were enrolled. The DEFB103 copy number was measured by two sets of probes to obtain a stable result in a custom-by-design Multiplex AccuCopy(™) kit (Genesky Biotechnologies Inc., Shanghai, China) based on a multiplex fluorescence competitive polymerase chain reaction (PCR) principle. The copy number of DEFB103 ranged from 2 to 6 in both AS patients and controls. Mann-Whitney U test and chi-squared test were performed to analyze the difference of DEFB103 copy number between AS patients and controls while no statistical difference has been found. We considered the copy number of DEFB103 gene may not associate with susceptibility to AS.
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Pan F, Ding C, Laslett L, Tian J, Winzenberg T, Cicuttini F, Jones G. OP0138 Pain at Multiple Sites Outside the Knee Predicts Knee Cartilage Volume Loss: A Prospective Study in Older Adults. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.4279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Pan F, Khan H, Ding C, Winzenberg T, Martel-Pelletier J, Pelletier JP, Cicuttini F, Jones G. Familial effects on structural changes relevant to knee osteoarthritis: a prospective cohort study. Osteoarthritis Cartilage 2015; 23:559-64. [PMID: 25595697 DOI: 10.1016/j.joca.2015.01.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Revised: 12/31/2014] [Accepted: 01/05/2015] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Genetic factors play an important role in the pathogenesis of knee osteoarthritis (OA), but which knee structural changes mediate this is unclear. This study aimed to describe the differences in knee structural changes over 8-10 years between offspring having at least one parent with total knee replacement (TKR) for severe primary knee OA and controls with no family history of knee OA. DESIGN 115 offspring (mean age 45 years) with a family history of TKR for severe knee OA were compared with 104 (mean age 46 years) controls. T1 or T2-weighted fat saturated magnetic resonance imaging (MRI) was performed respectively to evaluate knee cartilage defects, bone marrow lesions (BMLs), meniscal extrusion and tears at baseline and 10 years. Multivariate logistic regression model was used to adjust for potential confounders. RESULTS Offspring had a greater increase in cartilage defect score (1.03 vs 0.52, P = 0.007) and meniscal extrusion score (0.28 vs 0.10, P = 0.027) over 10 years, and a greater increase in meniscal tear score (0.40 vs 0.10, P = 0.012) over 8 years in the medial but not the lateral tibiofemoral compartment. Changes in BMLs over 8-years were not different between the two groups. These associations were independent of potential confounders, and strengthened after further adjustment for each other. CONCLUSION With the exception of BMLs, offspring with a family history of knee OA have a greater risk of increases in multiple knee structural abnormalities in the medial tibiofemoral compartment suggesting pleiotropic familial effects.
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Guo YC, Lin XW, Zhang WT, Yan CX, Pan F, Yan TL, Li JP, Chen T, Schmeling A, Zhou H. Chronology of third molar mineralization in a northern Chinese population. Rechtsmedizin (Berl) 2015. [DOI: 10.1007/s00194-014-0998-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Pan F, Gao S, Liu HZ. A heterometallic nanosized tube {Fe[(CN)6]2[Co(LN3O2)]3}n and two of its lamellar polymorphous isomers. CrystEngComm 2015. [DOI: 10.1039/c5ce01185j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polymorphous Fe–Co heterometallic crystals with interesting related structures based on the same sub-structures were prepared and studied.
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Dong WS, Zeng F, Lu SH, Li XJ, Chang CT, Liu A, Pan F, Guo D. Effect of heavy-ion on frequency selectivity of semiconducting polymer/electrolyte heterojunction. RSC Adv 2015. [DOI: 10.1039/c5ra19938g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Long-term bidirectional frequency selectivity has been achieved in MEH-PPV/PEO–Nd3+cells, which suggests spike-rate-dependent plasticity learning protocol. It depends on pulse shape due to variation of ionic type.
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Beyeh NK, Pan F, Valkonen A, Rissanen K. Encapsulation of secondary and tertiary ammonium salts by resorcinarenes and pyrogallarenes: the effect of size and charge concentration. CrystEngComm 2015. [DOI: 10.1039/c4ce01927j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Multiple weak interactions are manifested in the complexation of different categories of secondary and tertiary alkyl ammonium salts with resorcinarenes and pyrogallarene leading to open inclusion and dimeric capsular assemblies with varying binding affinities, and analyzed in solid, liquid and gas phases.
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Mao HJ, Song C, Xiao LR, Gao S, Cui B, Peng JJ, Li F, Pan F. Unconventional resistive switching behavior in ferroelectric tunnel junctions. Phys Chem Chem Phys 2015; 17:10146-50. [DOI: 10.1039/c5cp00421g] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An unconventional resistive switching behavior is observed in ferroelectric tunnel junctions, which builds a bridge between ferroelectric tunnel junctions and resistive random access memory devices.
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Wang B, Zhang J, Shi K, Tam HL, Zhang W, Guo L, Pan F, Yu G, Zhu F, Wong MS. Heteroatom substituted naphthodithiophene–benzothiadiazole copolymers and their effects on photovoltaic and charge mobility properties. Polym Chem 2015. [DOI: 10.1039/c5py00333d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Incorporation of heteroatoms into D–A copolymers enhances the functional properties for applications of OSCs and OFETs.
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Pan F, Puttreddy R, Rissanen K, Englert U. Synthesis of tetrahalide dianions directed by crystal engineering. CrystEngComm 2015. [DOI: 10.1039/c5ce01288k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The analogy between hydrogen bonds and halogen bonds was used to synthesize the unstable [X⋯I–I⋯X]2− species by trapping I2 in the channels of macrocyclic compounds.
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Stern S, Pan F. Creating Patient Profile in Individual Simulations: A Comparison of Approaches. VALUE IN HEALTH : THE JOURNAL OF THE INTERNATIONAL SOCIETY FOR PHARMACOECONOMICS AND OUTCOMES RESEARCH 2014; 17:A555-A556. [PMID: 27201822 DOI: 10.1016/j.jval.2014.08.1825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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Peng S, Sorensen S, Pan F, Dorman E, Sun S, Van Sanden S, Sengupta N, Gaudig M. Simulation Model of Ibrutinib in Treatment of Relapsed or Refractory Mantle Cell Lymphoma (MCL). VALUE IN HEALTH : THE JOURNAL OF THE INTERNATIONAL SOCIETY FOR PHARMACOECONOMICS AND OUTCOMES RESEARCH 2014; 17:A620. [PMID: 27202180 DOI: 10.1016/j.jval.2014.08.2196] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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Sorensen S, Dorman E, Xu Y, Sallum R, Pan F, Szatkowski A, Gaudig M, Sengupta N. Systematic Review of Relapsed or Refractory Mantle Cell Lymphoma (MCL) Clinical Trials: Implications for Decision Modeling. VALUE IN HEALTH : THE JOURNAL OF THE INTERNATIONAL SOCIETY FOR PHARMACOECONOMICS AND OUTCOMES RESEARCH 2014; 17:A615-A616. [PMID: 27202152 DOI: 10.1016/j.jval.2014.08.2168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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Pan F, Peng S, Sorensen S, Dorman E, Sun S, Gaudig M, Sengupta N. Simulation Model of Ibrutinib for Chronic Lymphocytic Leukemia (CLL) With Prior Treatment. VALUE IN HEALTH : THE JOURNAL OF THE INTERNATIONAL SOCIETY FOR PHARMACOECONOMICS AND OUTCOMES RESEARCH 2014; 17:A620-A621. [PMID: 27202182 DOI: 10.1016/j.jval.2014.08.2198] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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Wang J, Han W, Wang X, Pan F, Liu Z, Halliday A, Jin X, Antony B, Cicuttini F, Jones G, Ding C. Mass effect and signal intensity alteration in the suprapatellar fat pad: associations with knee symptoms and structure. Osteoarthritis Cartilage 2014; 22:1619-26. [PMID: 24882527 DOI: 10.1016/j.joca.2014.05.018] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Revised: 04/22/2014] [Accepted: 05/21/2014] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To describe cross-sectional associations between mass effect or signal intensity alteration of the suprapatellar fat pad (SPFP) with knee symptoms and structure in older adults. METHODS A cross-sectional sample of 904 randomly selected subjects (mean 62.4 years, 49.9% female) was studied. T1- or T2-weighted fat suppressed magnetic resonance imaging (MRI) was used to assess mass effect or signal intensity alteration of SPFP, cartilage volume, cartilage defects, and bone marrow lesions (BMLs). Knee pain was assessed by self-administered Western Ontario McMaster Osteoarthritis Index (WOMAC) questionnaire. The Osteoarthritis Research Society International (OARSI) atlas was used to assess knee osteophyte, joint space narrowing (JSN) and radiographic osteoarthritis (ROA). Univariable and multivariable linear or logistic regression analyses were used to examine the associations. RESULTS After adjustment for confounders including age, sex, body mass index (BMI), disease status, tibial bone area and/or ROA, the presence of SPFP mass effect was significantly associated with any knee pain (OR: 2.39; 95% confidence interval (CI): 1.54, 3.70) and ROA (OR: 2.10; 95% CI: 1.33, 3.31) but not with cartilage volume, cartilage defects or BMLs. The presence of SPFP signal intensity alteration was significantly associated with any knee pain (OR: 1.90; 95% CI: 1.43, 2.53), ROA (OR: 1.83; 95% CI: 1.37, 2.45), any BMLs (OR: 1.55; 95% CI: 1.17, 2.06) but not with cartilage volume and cartilage defects. Significant associations with knee pain and BMLs were more evident in subjects with ROA. Presence of SPFP mass effect and/or signal intensity alteration combined was associated with any tibial cartilage defects (OR: 1.45; 95% CI: 1.04, 2.04). CONCLUSIONS SPFP mass effect and/or signal intensity alterations are deleteriously associated with knee pain, radiographic OA and BMLs in this cross-sectional study, suggesting that SPFP abnormalities may contribute to pain and structural abnormalities in the knee.
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Chen X, Liu L, Pan F, Qiao L. Mechanical properties and electromagnetic shielding effectiveness of ZK60 magnesium alloy subjected to cold rolling and aging. ACTA ACUST UNITED AC 2014. [DOI: 10.1179/1432891714z.000000000672] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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79
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Cui B, Song C, Wang GY, Mao HJ, Zeng F, Pan F. Strain engineering induced interfacial self-assembly and intrinsic exchange bias in a manganite perovskite film. Sci Rep 2014; 3:2542. [PMID: 23985971 PMCID: PMC3756339 DOI: 10.1038/srep02542] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Accepted: 08/14/2013] [Indexed: 01/26/2023] Open
Abstract
The control of complex oxide heterostructures at atomic level generates a rich spectrum of exotic properties and unexpected states at the interface between two separately prepared materials. The frustration of magnetization and conductivity of manganite perovskite at surface/interface which is inimical to their device applications, could also flourish in tailored functionalities in return. Here we prove that the exchange bias (EB) effect can unexpectedly emerge in a (La,Sr)MnO3 (LSMO) “single” film when large compressive stress imposed through a lattice mismatched substrate. The intrinsic EB behavior is directly demonstrated to be originating from the exchange coupling between ferromagnetic LSMO and an unprecedented LaSrMnO4-based spin glass, formed under a large interfacial strain and subsequent self-assembly. The present results not only provide a strategy for producing a new class of delicately functional interface by strain engineering, but also shed promising light on fabricating the EB part of spintronic devices in a single step.
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80
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Han W, Pan F, Halliday A, Cicuttini F, Jones G, Ding C. OP0063 Associations between Abnormal Infrapatellar FAT PAD Quality and Knee Osteoarthritic Changes in Older Adults: A Cohort Study. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.6011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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81
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Zhang H, Pan F, Zhao X, Wang G, Wang J, Pan J, Wang W, Jin Z, Xu H, Li Y, Zhong N. Distribution and antimicrobial resistance of enteric pathogens among Chinese pediatric diarrhea: A multicenter retrospective study (2008–2013). Clin Biochem 2014. [DOI: 10.1016/j.clinbiochem.2014.04.083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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82
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Wang J, Antony B, Pan F, Han W, Halliday A, Cicuttini F, Jones G, Ding C. OP0058 Patellar Bone Marrow Lesions PREDICT Patellar Cartilage Defect Progression, Cartilage Volume Loss and Knee Pain in Older Adults: A Cohort Study. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.6052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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83
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Fan D, Ding N, Yang T, Wu S, Liu S, Liu L, Hu Y, Duan Z, Xia G, Xu S, Xu J, Ding C, Pan F. Single nucleotide polymorphisms of the interleukin-33 (IL-33) gene are associated with ankylosing spondylitis in Chinese individuals: a case–control pilot study. Scand J Rheumatol 2014; 43:374-9. [DOI: 10.3109/03009742.2014.882408] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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84
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Pan F, Li L, Luo J, Liu X, Tian W. The 5′ promoter region of MHC class I chain-related gene B. ACTA ACUST UNITED AC 2014; 83:337-43. [DOI: 10.1111/tan.12348] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Revised: 02/05/2014] [Accepted: 03/04/2014] [Indexed: 01/07/2023]
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85
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Cui B, Song C, Li F, Wang GY, Mao HJ, Peng JJ, Zeng F, Pan F. Tuning the entanglement between orbital reconstruction and charge transfer at a film surface. Sci Rep 2014; 4:4206. [PMID: 24569650 PMCID: PMC3935207 DOI: 10.1038/srep04206] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Accepted: 02/11/2014] [Indexed: 12/21/2022] Open
Abstract
The interplay between orbital, charge, spin, and lattice degrees of freedom is at the core of correlated oxides. This is extensively studied at the interface of heterostructures constituted of two-layer or multilayer oxide films. Here, we demonstrate the interactions between orbital reconstruction and charge transfer in the surface regime of ultrathin (La,Sr)MnO3, which is a model system of correlated oxides. The interactions are manipulated in a quantitative manner by surface symmetry-breaking and epitaxial strain, both tensile and compressive. The established charge transfer, accompanied by the formation of oxygen vacancies, provides a conceptually novel vision for the long-term problem of manganites—the severe surface/interface magnetization and conductivity deterioration. The oxygen vacancies are then purposefully tuned by cooling oxygen pressure, markedly improving the performances of differently strained films. Our findings offer a broad opportunity to tailor and benefit from the entanglements between orbit, charge, spin, and lattice at the surface of oxide films.
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86
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Zhou Y, Liu J, Fu X, Yu Y, Shi B, Yu G, Shi Z, Wu W, Pan F, Tian H, Liu H, Zhang F. Identification of three novel frameshift mutations of the MVK gene in four Chinese families with disseminated superficial actinic porokeratosis. Br J Dermatol 2014; 169:193-5. [PMID: 23834120 DOI: 10.1111/bjd.12224] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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87
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Tojiboev A, Wang R, Pan F, Englert U, Turgunov K, Okmanov R. Insight into the chemical bonding and electrostatic potential: A charge density study on a quinazoline derivative. J STRUCT CHEM+ 2014. [DOI: 10.1134/s0022476613060036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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88
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Turunen L, Beyeh NK, Pan F, Valkonen A, Rissanen K. Tetraiodoethynyl resorcinarene cavitands as multivalent halogen bond donors. Chem Commun (Camb) 2014; 50:15920-3. [DOI: 10.1039/c4cc07771g] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The first examples of iodoethynyl resorcinarene cavitands as rigid 3D halogen bond (XB) donor molecules are presented. These concave macrocycles form strong, RXB = 0.78–0.83, halogen bonds with dioxane oxygen, pyridine nitrogen and a bromide anion in tetraproropyl ammonium bromide resulting in deep cavity cavitand structures.
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89
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Zhang Y, Tang YJ, Li ZH, Pan F, Huang K, Xu GH. KiSS1 inhibits growth and invasion of osteosarcoma cells through inhibition of the MAPK pathway. Eur J Histochem 2013; 57:e30. [PMID: 24441183 PMCID: PMC3896032 DOI: 10.4081/ejh.2013.e30] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Revised: 09/16/2013] [Accepted: 09/17/2013] [Indexed: 01/05/2023] Open
Abstract
As a metastasis suppressor, KiSS1 has been implicated in numerous human cancers. However, recent studies have demonstrated that KiSS1 promotes tumor growth and metastasis in breast cancer, and it is unclear about the expression and function of KiSS1 in human osteosarcoma (OS). The aim of the present study was to investigate the role and molecular mechanisms of KiSS1 in human OS. The expression of KiSS1 was assessed by immunohistochemical assay using a tissue microarray procedure in forty cases of OS tissues. A gain-of-function approach was used to observe the effects of lentiviral vector-mediated overexpression of KiSS1 (Lv-KiSS1) on the biological behaviors including proliferative activities and invasive potential of OS MG-63 cells, indicated by MTT and Transwell assays, respectively. The results showed that the expression of KiSS1 protein in OS tissues was significantly lowered compared to that in adjacent non-cancerous tissues (ANCT) (42.5% vs 70.0%, P=0.023), and had negative correlation with distant metastases of the tumor (P=0.019). Overexpression of KiSS1 inhibited proliferation and invasion of OS cells with the decreased expression of p38 MAPK and matrix metalloproteinase-9 (MMP-9). Taken together, our findings indicate that the decreased expression of KiSS1 is correlated with distant metastasis of OS, and KiSS1 may function as a tumor suppressor in OS cells through inhibition of the MAPK pathway, suggesting that KiSS1 may serve as a potential therapeutic target for the treatment of cancer.
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90
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Xia JD, Han YF, Pan F, Zhou LH, Chen Y, Dai YT. Clinical characteristics and penile afferent neuronal function in patients with primary delayed ejaculation. Andrology 2013; 1:787-92. [PMID: 23970455 DOI: 10.1111/j.2047-2927.2013.00119.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2013] [Revised: 06/20/2013] [Accepted: 07/08/2013] [Indexed: 11/29/2022]
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91
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Zhao D, Pan L, Zhang F, Pan F, Ma J, Zhang X, Liu Y. Successful use of aromatase inhibitor letrozole in NOA with an elevated FSH level: a case report. Andrologia 2013; 46:456-7. [PMID: 23803162 DOI: 10.1111/and.12122] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/19/2013] [Indexed: 11/30/2022] Open
Abstract
Aromatase inhibitors inhibit the conversion of testosterone to oestrogens and could reduce serum oestradiol concentrations. Letrozole is one of aromatase inhibitors frequently used in treatment of men with oligospermia. We present the case of an infertile man with small testes and an elevated FSH level, which was diagnosed as NOA, hypospermatogenesis proven by testicular biopsy. After taking letrozole for 3 months, semen analyses by computer-aided sperm analysis present that this man had normal spermatogenesis. This is the first case report of the activation of spermatogenesis, in man who was NOA with elevated FSH level, resulting from the use of the one of aromatase inhibitors.
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92
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Wirthlin J, Kau CH, English JD, Pan F, Zhou H. Comparison of facial morphologies between adult Chinese and Houstonian Caucasian populations using three-dimensional imaging. Int J Oral Maxillofac Surg 2013; 42:1100-7. [PMID: 23623784 DOI: 10.1016/j.ijom.2013.03.008] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2012] [Revised: 03/11/2013] [Accepted: 03/13/2013] [Indexed: 11/25/2022]
Abstract
The objective of this study was to compare the facial morphologies of an adult Chinese population to a Houstonian white population. Three-dimensional (3D) images were acquired via a commercially available stereophotogrammetric camera system, 3dMDface™. Using the system, 100 subjects from a Houstonian population and 71 subjects from a Chinese population were photographed. A complex mathematical algorithm was performed to generate a composite facial average (one for males and one for females) for each subgroup. The computer-generated facial averages were then superimposed based on a previously validated superimposition method. The facial averages were evaluated for differences. Distinct facial differences were evident between the subgroups evaluated. These areas included the nasal tip, the peri-orbital area, the malar process, the labial region, the forehead, and the chin. Overall, the mean facial difference between the Chinese and Houstonian female averages was 2.73±2.20mm, while the difference between the Chinese and Houstonian males was 2.83±2.20mm. The percent similarity for the female population pairings and male population pairings were 10.45% and 12.13%, respectively. The average adult Chinese and Houstonian faces possess distinct differences. Different populations and ethnicities have different facial features and averages that should be considered in the planning of treatment.
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93
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Cui B, Song C, Wang YY, Yan WS, Zeng F, Pan F. Tuning of uniaxial magnetic anisotropy in amorphous CoFeB films. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2013; 25:106003. [PMID: 23389101 DOI: 10.1088/0953-8984/25/10/106003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We demonstrate that the uniaxial magnetic anisotropy (UMA) of amorphous CoFeB films can be tuned by crystallinity and orbital moment ratio, combining the results of magnetization reversal and ferromagnetic resonance with high-resolution transmission electron microscopy, x-ray-absorption near-edge structure and x-ray magnetic circular dichroism. Isotropic polycrystalline buffers of tungsten (W), tantalum (Ta), and copper (Cu) between CoFeB and Si(100) substrates have direct and crucial bearing on the interfacial microstructure and orbital moment ratio. Compared with Ta and Cu buffer, CoFeB with W buffer exhibits obvious UMA and has lower crystallinity at the interface and higher orbital moment. Amorphous phase distributed homogeneously in CoFeB film grown on W buffer contributes to improve the easy-axis squareness with a sharp magnetization reversal. Our demonstrations not only realize effective tuning of UMA in amorphous CoFeB, but also provide an appealing alternative buffer (W) for CoFeB-based magnetic tunnel junctions.
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94
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Zhang Y, Tang YJ, Man Y, Pan F, Li ZH, Jia LS. Knockdown of AXL receptor tyrosine kinase in osteosarcoma cells leads to decreased proliferation and increased apoptosis. Int J Immunopathol Pharmacol 2013; 26:179-88. [PMID: 23527720 DOI: 10.1177/039463201302600117] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Dysregulation of the Axl receptor tyrosine kinase (RTK) has been implicated in the development and progression of a variety of malignancies. Axl is known to activate strong anti-apoptotic signaling pathways that promote oncogenesis. However, the role of Axl plays in osteosarcoma (OS) remains elusive. The present study aimed to investigate the clinical significance and function of Axl in human OS. Forty cases of OS and corresponding adjacent non-cancerous tissues (ANCT) were collected. The expression of Axl was assessed using immunohistochemical assay through tissue microarray procedure. A loss-of-function experiment was performed to investigate the effects of small hairpin RNA (shRNA)-mediated knockdown of Axl on the expression of p-AKT, poly ADP-ribose polymerase (PARP) and Ki-67, the proliferative activities, indicated by MTT assay, and the apoptotic index in OS MG-63 cells. As a result, the expression of Axl was found in OS tissues with higher strong reactivity rate, compared with the ANCT (75.0 percent vs 20.0 percent, P=0.000), but it did not associate with the age, gender, tumor size, TNM staging and distant metastases (each Pgreater than0.05). Furthermore, knockdown of Axl inhibited the proliferative activities and induced apoptosis in MG-63 cells with decreased expression of p-AKT, and Ki-67 and increased expression of PARP. In conclusion, our findings suggest that Axl is highly expressed in most of the OS tissues compared with the ANCT, and knockdown of Axl inhibits proliferation and induces apoptosis of OS cells possibly through downregulation of the AKT pathway, suggesting that our findings may provide new insights into the potential therapeutic target for cancer.
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95
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Pei B, Xu S, Liu T, Pan F, Xu J, Ding C. Associations of theIL-1F7gene polymorphisms with rheumatoid arthritis in Chinese Han population. Int J Immunogenet 2012; 40:199-203. [PMID: 23171316 DOI: 10.1111/iji.12007] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Revised: 09/14/2012] [Accepted: 09/24/2012] [Indexed: 11/30/2022]
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96
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Wang YY, Song C, Cui B, Wang GY, Zeng F, Pan F. Room-temperature perpendicular exchange coupling and tunneling anisotropic magnetoresistance in an antiferromagnet-based tunnel junction. PHYSICAL REVIEW LETTERS 2012; 109:137201. [PMID: 23030116 DOI: 10.1103/physrevlett.109.137201] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2012] [Indexed: 06/01/2023]
Abstract
We investigate the exchange coupling between perpendicular anisotropy (PMA) Co/Pt and IrMn in-plane antiferromagnets (AFMs), as well as tunneling anisotropic magnetoresistance (TAMR) in [Pt/Co]/IrMn/AlO_{x}/Pt tunnel junctions, where Co/Pt magnetization drives rotation of AFM moments with the formation of exchange-spring twisting. When coupled with a PMA ferromagnet, the AFM moments partially rotate with out-of-plane magnetic fields, in contrast with being pinned along the easy direction of IrMn for in-plane fields. Because of the superior thermal tolerance of perpendicular exchange coupling and the stability of moments in ~6 nm-thick IrMn, TAMR gets significantly enhanced up to room temperature. Their use would advance the process towards practical AFM spintronics.
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97
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Pan F, Ling Z, Gao K, Liu B. Alloying in an Immiscible Cu-Nb System upon Solid-State Reaction. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-398-337] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
ABSTRACTIn an immiscible Cu-Nb system, an amorphous alloy and two metastable crystalline phases were obtained by solid-state reaction of Cu-Nb multilayered films, and the formation of the alloy phases was found to be quite sensitive to the average composition of the films. At Nb concentration of 75at%, amorphization was achieved by 250°C annealing for 50 min, while in the films with compositions of 70 and 80 at% Nb, a simple cubic (a=0.405±0.005nm) and an orthorhombic phase (a=0.421, b=0.334, c=0.291±0.005nm) were observed, respectively. Thermodynamic calculation was conducted for the Nb-Cu alloy phases and the energetic state of the multilayers, which consisted of 9 Cu/Nb bilayers. It turned out that the excess free energy originating from the interfacial atoms could raise the multilayers to an energy level being higher than that of the amorphous or/and metastable crystalline phases both with a convex shape, and thus provided a major driving force for alloy phase formation in such immiscible system.
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98
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Zhu CL, Cao YH, Zhang R, Song Y, Liu WY, Pan F, Li Y, Zhu Y, Liu F, Wu JG. Stimulatory effect of LPS and feedback effect of PGE2 on IL-27 production. Scand J Immunol 2011; 72:469-75. [PMID: 21044121 DOI: 10.1111/j.1365-3083.2010.02460.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Interleukin (IL)-27 is a new member of the IL-6/IL-12 family, composed of two subunits, the Epstein-Barr virus-induced gene 3 (EBI3) and p28 chains (p28), and produced by activated monocytes and dendritic cells. IL-27 plays an important role in the regulation of differentiation of naive T helper cells and has diverse effects on innate immune cells. However, the pro-inflammatory mechanisms of IL-27 are still not well known. In this study, we investigated the effect of lipopolysaccharide (LPS) on the production of IL-27. We found that LPS-stimulated IL-27 production was in a dose-dependent and time-dependent manner in THP-1 cells. We have also shown that IL-27 induced PGE2 production and COX-2 gene expression at the level of mRNA as well as protein. Moreover, we found feed back effect of PGE2 on the production of IL-27 in THP-1 cells. The results suggest that PGE2 significantly inhibits LPS-induced IL-27 production, without affecting basal IL-27 expression. Further experiment suggests that PGE2 and LPS regulate IL-27 through NF-κB pathway. Our findings may have wide implication for IL-27 in inflammatory diseases.
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99
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Edwards NL, Sundy JS, Forsythe A, Blume S, Pan F, Becker MA. Work productivity loss due to flares in patients with chronic gout refractory to conventional therapy. J Med Econ 2011; 14:10-5. [PMID: 21138339 DOI: 10.3111/13696998.2010.540874] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
OBJECTIVE Joint pain and swelling during gout flares may lead to considerable morbidity and disability, having an impact on patient work productivity and social participation. The objective of this study was to assess how gout flares affect these activities in patients with chronic gout refractory to conventional therapy. METHODS A 1-year prospective observational study was conducted among patients with symptomatic disease in the United States in 2001. Inclusion criteria required patients (1) to be age 18 years or older, (2) to have documented, crystal-proven gout, (3) to have symptomatic gout, and (4) to be intolerant or unresponsive to conventional therapy, reflected by SUA ≥ 6.0 mg/dL. Patients were evaluated every 2 months. At each visit, patients completed a gout diary, which included number of flares experienced, duration and severity of each flare, and whether the flare caused: (1) work loss, (2) missed appointments or social events, or (3) impairment of self-care activities. The Short-Form Health Survey (SF-36) was also completed each visit. RESULTS Analyses were restricted to those who completed the first 6 months of the study (n = 81). Mean number of flares per patient per year was 8.8. Of the patients who were <65 years, 78% reported at least 1 work day lost due to a gout attack during the year. Mean annual work day loss for those <65 years was 25.1 days. A total of 545 of patients reported at least one flare per year that impaired social activities, with a mean of 17.1 social days lost and 52% reported at least one flare per year that compromised normal self-care activities, with a mean of 16.9 days impairment. Correlations between the diary reports and activity-related questions from the SF-36 were significantly positive. LIMITATIONS The study is limited by small sample size, lack of reference group, and inability to explicitly collect employment information. Age under 65 years was used as a proxy for employment eligibility. CONCLUSION Flares in patients with chronic gout refractory to conventional therapy significantly affect patient work productivity and social activities.
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100
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Sun L, Lam WP, Wong YW, Lam LH, Tang HC, Wai MS, Mak YT, Pan F, Yew DT. Permanent deficits in brain functions caused by long-term ketamine treatment in mice. Hum Exp Toxicol 2010; 30:1287-96. [PMID: 21056951 DOI: 10.1177/0960327110388958] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Ketamine, an injectable anesthetic, is also a popular recreational drug used by young adults worldwide. Ketamine is a non-competitive antagonist of N-methyl-d-aspartate receptor, which plays important roles in synaptic plasticity and neuronal learning. Most previous studies have examined the immediate and short-term effects of ketamine, which include learning and cognitive deficits plus impairment of working memory, whereas little is known about the long-term effects of repeated ketamine injections of common or usual recreational doses. Therefore, we aimed to evaluate the deficits in brain functions with behavioral tests, including wire hang, hot plate and water maze tests, plus examine prefrontal cortex apoptotic markers, including Bax, Bcl-2 and caspase-3, in mice treated with 6 months of daily ketamine administration. In our study, following 6 months of ketamine injection, mice showed significant deterioration in neuromuscular strength and nociception 4 hours post-dose, but learning and working memory were not affected nor was there significant apoptosis in the prefrontal cortex. Our research revealed the important clinical finding that long-term ketamine abuse with usual recreational doses can detrimentally affect neuromuscular strength and nociception as part of measurable, stable and persistent deficits in brain function.
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