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Tan Y, Yang D, Fan J, Chen Y. Elevated levels of immunoglobulin E may indicate steroid resistance or relapse in adult primary nephrotic syndrome, especially in minimal change nephrotic syndrome. J Int Med Res 2012; 39:2307-13. [PMID: 22289548 DOI: 10.1177/147323001103900629] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Immunoglobulin E (IgE) antibodies may play a role in the development of kidney diseases that are related to hypersensitivity reactions. Patients with idiopathic nephrotic syndrome often exhibit increased serum IgE levels and this may be related to sensitivity to steroid treatment. In the present study, the serum IgE levels in 120 patients with different types of primary nephrotic syndrome (PNS) were analysed and found to be significantly elevated in cases of minimal change nephrotic syndrome (MCNS) compared with membranous nephropathy or membrano-proliferative glomerulonephritis. No difference in serum IgE level was observed between cases of steroid-sensitive nephrotic syndrome (SSNS) or steroid-resistant nephrotic syndrome, although the serum IgE level was significantly elevated in SSNS patients in relapse compared with SSNS patients in remission. In MCNS patients, 73.6% exhibited SSNS regardless of their serum IgE level at diagnosis. It is concluded that elevated levels of IgE may be a feature of steroid resistance or relapse, indicating prognostic significance in adult PNS, particularly in MCNS.
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Wingate K, Bonani W, Tan Y, Bryant S, Tan W. Compressive elasticity of three-dimensional nanofiber matrix directs mesenchymal stem cell differentiation to vascular cells with endothelial or smooth muscle cell markers. Acta Biomater 2012; 8:1440-9. [PMID: 22266031 DOI: 10.1016/j.actbio.2011.12.032] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2011] [Revised: 11/29/2011] [Accepted: 12/30/2011] [Indexed: 12/13/2022]
Abstract
The importance of mesenchymal stem cells (MSC) in vascular regeneration is becoming increasingly recognized. However, few in vitro studies have been performed to identify the effects of environmental elasticity on the differentiation of MSC into vascular cell types. Electrospinning and photopolymerization techniques were used to fabricate a three-dimensional (3-D) polyethylene glycol dimethacrylate nanofiber hydrogel matrix with tunable elasticity for use as a cellular substrate. Compression testing demonstrated that the elastic modulus of the hydrated 3-D matrices ranged from 2 to 15 kPa, similar to the in vivo elasticity of the intima basement membrane and media layer. MSC seeded on rigid matrices (8-15 kPa) showed an increase in cell area compared with those seeded on soft matrices (2-5 kPa). Furthermore, the matrix elasticity guided the cells to express different vascular-specific phenotypes with high differentiation efficiency. Around 95% of MSC seeded on the 3-D matrices with an elasticity of 3 kPa showed Flk-1 endothelial markers within 24h, while only 20% of MSC seeded on the matrices with elasticity >8 kPa demonstrated Flk-1 marker. In contrast, ∼80% of MSC seeded on 3-D matrices with elasticity >8 kPa demonstrated smooth muscle α-actin marker within 24h, while fewer than 10% of MSC seeded on 3-D matrices with elasticity <5 kPa showed α-actin markers. The ability to control MSC differentiation into either endothelial or smooth muscle-like cells based purely on the local elasticity of the substrate could be a powerful tool for vascular tissue regeneration.
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Wang H, Tan Y, Li J, Li Y, Dong W. Removal of silicon carbide from kerf loss slurry by Al–Si alloying process. Sep Purif Technol 2012. [DOI: 10.1016/j.seppur.2012.01.021] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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254
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Shi Y, Hou Y, Hu Q, Su J, Zeng H, Tan Y. A rare case of HHV-8-positive/HIV-negative/EBV-negative primary effusion lymphoma in a renal transplant recipient. Cytopathology 2012; 23:137-9. [DOI: 10.1111/j.1365-2303.2012.00960.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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255
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Xiao H, Luo Y, Shi J, Tan Y, He J, Xie W, Ye X, Cai Z, Lin M, Huang H. Genetic Variations in the Activation and Effector Pathways of Cytotoxic T Lymphocytes Modulate Alloimmune Reactivities and Have Prognostic Significance Following Allogeneic Hematopoietic Stem Cell Transplantation. Biol Blood Marrow Transplant 2012. [DOI: 10.1016/j.bbmt.2011.12.427] [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]
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256
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Luo Y, Hu Y, Shi J, Tan Y, Lai X, He J, Zheng W, Cai Z, Huang H. Donor and Recipient Hbv Immunity Before Transplantation Simultaneously Affects the Acquisition of Hbv Immunity After Unrelated-Donor Hematopoietic Stem Cell Transplantation. Biol Blood Marrow Transplant 2012. [DOI: 10.1016/j.bbmt.2011.12.399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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257
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Pikin A, Alessi J, Beebe E, Kponou A, Okamura M, Raparia D, Ritter J, Tan Y, Kuznetsov G. Ion optics of RHIC electron beam ion source. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2012; 83:02A504. [PMID: 22380200 DOI: 10.1063/1.3666915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
RHIC electron beam ion source has been commissioned to operate as a versatile ion source on RHIC injection facility supplying ion species from He to Au for Booster. Except for light gaseous elements RHIC EBIS employs ion injection from several external primary ion sources. With electrostatic optics fast switching from one ion species to another can be done on a pulse to pulse mode. The design of an ion optical structure and the results of simulations for different ion species are presented. In the choice of optical elements special attention was paid to spherical aberrations for high-current space charge dominated ion beams. The combination of a gridded lens and a magnet lens in LEBT provides flexibility of optical control for a wide range of ion species to satisfy acceptance parameters of RFQ. The results of ion transmission measurements are presented.
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Zhao M, Liang G, Wu X, Wang S, Zhang P, Su Y, Yin H, Tan Y, Zhang J, Lu Q. Abnormal epigenetic modifications in peripheral blood mononuclear cells from patients with alopecia areata. Br J Dermatol 2012; 166:226-73. [PMID: 21936853 DOI: 10.1111/j.1365-2133.2011.10646.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Alopecia areata (AA) is a hair loss disease caused by T-cell-mediated autoimmune reactions against anagen-stage hair follicles. Although the exact aetiology is poorly understood, there is evidence to suggest that both genetic and environmental factors are involved in AA pathogenesis. OBJECTIVES To analyse DNA methylation and histone modification patterns in peripheral blood mononuclear cells (PBMCs) of patients with AA. METHODS PBMC samples were obtained from 25 patients with AA and 20 healthy controls. Global DNA methylcytosine levels, as well as histone acetylation and methylation levels, were measured by enzyme-linked immunosorbent assay. mRNA expression levels were determined using real-time quantitative reverse transcription-polymerase chain reaction. RESULTS Genomic DNA methylation in PBMCs of patients with AA was increased relative to controls. DNMT1, MBD1 and MBD4 expression levels were significantly higher in AA PBMCs than in controls, and DNMT1 transcription levels positively correlated with global DNA methylation levels in patient samples. Histone H3 acetylation was significantly increased and histone H3 lysine 4 methylation was significantly decreased in patient PBMCs compared with healthy controls. Histone H3 acetylation levels were positively correlated with AA disease severity, and with RANTES (CCL5) mRNA expression in PBMCs of patients with AA. These changes were accompanied by increased p300 (EP300), histone deacetylase 1 (HDAC1), myeloid/lymphoid or mixed lineage leukemia (MLL), SET7/9 (SETD7), G9A (EHMT2), JMJD2C (KDM4C) and JARID1A (KDM5A) expression, as well as reduced HDAC2, HDAC7, LSD1 (KDM1A), JMJD2A (KDM4A) and JMJD2B (KDM4B) expression. CONCLUSIONS DNA methylation and histone modification status are altered in PBMCs of patients with AA, possibly due to the deregulation of epigenetic regulatory genes. These changes may contribute to the activation of pathological immune responses in AA.
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Vlckova M, Trkova M, Zemanova Z, Hancarova M, Novotna D, Raskova D, Puchmajerova A, Drabova J, Zmitkova Z, Tan Y, Sedlacek Z. Mechanism and genotype-phenotype correlation of two proximal 6q deletions characterized using mBAND, FISH, array CGH, and DNA sequencing. Cytogenet Genome Res 2011; 136:15-20. [PMID: 22156400 DOI: 10.1159/000334709] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Proximal 6q deletions have a milder phenotype than middle and distal 6q deletions. We describe 2 patients with non-overlapping deletions of about 15 and 19 Mb, respectively, which subdivide the proximal 6q region into 2 parts. The aberrations were identified using karyotyping and analysed using mBAND and array CGH. The unaffected mother of the first patient carried a mosaic karyotype with the deletion in all metaphases analysed and a small supernumerary marker formed by the deleted material in about 77% of cells. Her chromosome 6 centromeric signal was split between the deleted chromosome and the marker, suggesting that this deletion arose through the centromere fission mechanism. In this family the location of the proximal breakpoint in the centromere prevented cloning of the deletion junction, but the junction of the more distal deletion in the second patient was cloned and sequenced. This analysis showed that the latter aberration was most likely caused by non-homologous end joining. The second patient also had a remarkably more severe phenotype which could indicate a partial overlap of his deletion with the middle 6q interval. The phenotypes of both patients could be partly correlated with the gene content of their deletions and with phenotypes of other published patients.
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Pang Y, Zhou Y, Wang S, Tan Y, Yue J, Zhao B, Wang L, Zhao Y, Kam K. Rapid molecular identification of mycobacterial species in positive culture isolates using the biochip test. Int J Tuberc Lung Dis 2011; 15:1680-5. [DOI: 10.5588/ijtld.11.0061] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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261
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de Sherbinin A, Castro M, Gemenne F, Cernea MM, Adamo S, Fearnside PM, Krieger G, Lahmani S, Oliver-Smith A, Pankhurst A, Scudder T, Singer B, Tan Y, Wannier G, Boncour P, Ehrhart C, Hugo G, Pandey B, Shi G. Climate change. Preparing for resettlement associated with climate change. Science 2011; 334:456-7. [PMID: 22034418 DOI: 10.1126/science.1208821] [Citation(s) in RCA: 167] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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262
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Zhu D, Qu Z, Tan Y, Yu F, Zhao MH. Acute kidney injury in Chinese patients with lupus nephritis: a large cohort study from a single center. Lupus 2011; 20:1557-65. [PMID: 21993389 DOI: 10.1177/0961203311417035] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
OBJECTIVE In this study we assess clinicopathologic characteristics, treatment and prognosis of acute kidney injury (AKI) in a large cohort of Chinese patients with lupus nephritis. METHODS The clinical, laboratory, renal histopathology, treatment and outcome data were retrospectively collected and compared between lupus nephritis patients with and without AKI. The impact of AKI on renal outcome was evaluated. RESULTS Among 322 patients with renal biopsy-proven lupus nephritis, 66 (20.5%) were identified as AKI. Male predominance was observed in patients with AKI (p < 0.001). In comparison with the non-AKI group, patients with AKI had significantly higher proportions of serositis (p < 0.001), neurologic disorder (p = 0.026), anemia (p < 0.001), thrombocytopenia (p = 0.013) and nephrotic syndrome (p = 0.011), but significant lower serum C3 (p < 0.001). The Systemic Lupus Erythematosus Disease Activity Index (SLEDAI) scores, renal pathological activity indices and chronicity indices were significantly higher in the AKI group (p < 0.001 in all cases). Regarding outcome, the AKI group had a significantly poorer renal outcome compared with non-AKI group (p < 0.001). In the AKI group, patients with crescentic glomerulonephritis and thrombotic microangiopathy had the worst renal outcome. AKI was an independent risk factor for renal outcome (hazard ratio [HR] = 5.819, 95% confidence interval 2.411-14.044, p < 0.001). CONCLUSIONS AKI is common in lupus nephritis and is an independent risk factor for renal outcome.
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Wang C, Jia L, Tan Y. Simultaneous Carbonation and Sulfation of CaO in Oxy-Fuel CFB Combustion. Chem Eng Technol 2011. [DOI: 10.1002/ceat.201000570] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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264
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Tan Y. MP-14.14 Single Port Retroperitoneal Laparoscopic Adrenalectomy for Large Adrenal Mass. Urology 2011. [DOI: 10.1016/j.urology.2011.07.336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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265
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Tan Y. MP-14.15 Single Port/LESS Nephrectomy and Nephroureterectomy: Initial Experience in Singapore. Urology 2011. [DOI: 10.1016/j.urology.2011.07.337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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266
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Tan Y. UP-02.057 Single Port Transumbilical Laparoscopic Radical Nephrectomy and Bilateral Ovarian Cystectomy: First Clinical Case. Urology 2011. [DOI: 10.1016/j.urology.2011.07.875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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267
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Zhang J, Misch R, Tan Y, Agar DW. Novel Thermomorphic Biphasic Amine Solvents for CO2 Absorption and Low-Temperature Extractive Regeneration. Chem Eng Technol 2011. [DOI: 10.1002/ceat.201100099] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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268
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Zhang Q, Tan Y. Nerve growth factor augments neuronal responsiveness to noradrenaline in cultured dorsal root ganglion neurons of rats. Neuroscience 2011; 193:72-9. [PMID: 21784134 DOI: 10.1016/j.neuroscience.2011.07.027] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2011] [Revised: 07/09/2011] [Accepted: 07/12/2011] [Indexed: 11/28/2022]
Abstract
Increasing evidence indicates that both the nerve growth factor (NGF) and adrenergic systems play a very important role in the development of nociception. However, there is little information concerning the functional interactions between these two systems in the dorsal root ganglion (DRG). The present study tested the hypothesis that NGF could affect neuronal responsiveness to noradrenaline (NA) on the nociceptive DRG neurons, thus enhancing the nociceptive signals. To investigate this issue, spontaneous action potentials were recorded in cultured DRG neurons using current-clamp recording. When NGF (50 ng/ml, 24 h) was administered in the neuronal cultures, the neuronal firing response to NA (10 μM) was augmented in TrkA-positive neurons (3.02±0.28 Hz with NGF treatment vs. 1.36±0.14 Hz in control, P<0.05), indicating that chronic NGF treatment significantly enhanced the neuronal response to NA. Pretreatment of neurons with either the α-adrenergic receptor (AR) antagonist phentolamine (100 μM) or α1-AR antagonist prazosin (50 μM) significantly inhibited the enhanced firings of DRG neurons induced by NA. In addition, treatment of neuronal cultures with NGF (50 ng/ml, 24 h) induced a two-fold increase in α1b-AR expression, as detected with real-time reverse transcription PCR (RT-PCR) and Western blots, but had no effect on α2-AR expression. These observations indicate that NGF augmented neuronal responsiveness to NA in DRG neurons via increasing α1b-AR expression, and this could contribute to the development of pain sensitization.
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Tan Y, Ye X, Xu XZ, Xia W, Fu YS, Huang YF. MICA*002:04: a new allele identified by sequence-based typing in a Chinese individual. TISSUE ANTIGENS 2011; 78:74-76. [PMID: 21388367 DOI: 10.1111/j.1399-0039.2011.01639.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The novel MICA*002:04 allele differs from MICA*002:01 by a single mutation at position 486 (C>A) in codon 20 (GCC>GCA) in exon 3.
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Peng ZT, Tang J, Zhang QG, Li J, Wang P, Ouyang B, Tan Y. PP-038 Detection rate and drug resistance of ESBLs-producing Escherichia coli in a hospital. Int J Infect Dis 2011. [DOI: 10.1016/s1201-9712(11)60191-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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271
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Huang Y, Tan Y, Xu X, Wei Y, Xia W, Ye X. Identification of a novel allele, MICA*063N, in a Chinese lung cancer patient. ACTA ACUST UNITED AC 2011; 78:297-8. [DOI: 10.1111/j.1399-0039.2011.01692.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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272
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Zhao B, Tan Y, Li Y, Guo P, Schwartz L. SU-E-T-40: Exploring the Reproducibility of Tumor Volumes Measured by Radiologist, Computer-Aided Radiologist and Computer Alone. Med Phys 2011. [DOI: 10.1118/1.3611991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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273
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Zhao B, Ghiorghiu DC, Lefkowitz RA, Marley SE, Tan Y, Scott ML, Mann H, Schwartz LH. Metrics for measuring tumor burden: A comparison of unidimensional and volumetric measurements. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e13596] [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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274
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Xu YX, Tan Y, Yu F, Zhao MH. Late onset lupus nephritis in Chinese patients: classified by the 2003 International Society of Nephrology and Renal Pathology Society system. Lupus 2011; 20:801-8. [PMID: 21543512 DOI: 10.1177/0961203310397563] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
AIM The aim of this study was to assess clinicopathological characteristics and outcomes of a cohort of Chinese patients with late onset lupus nephritis. METHODS Clinical, pathological and outcome data for patients with late onset lupus nephritis (onset at age ≥50 years) and early onset lupus nephritis (onset at age ≤40 years) were retrospectively analyzed and compared. RESULTS Among 271 patients with renal biopsy-proven lupus nephritis, 30 were identified as having late onset lupus nephritis and 241 were identified as having early onset lupus nephritis. Lower female predominance was observed in the late onset patients (p = 0.06). The interval between presentation of lupus nephritis and diagnosis was significantly longer in the late onset group than in the early onset group (p = 0.003). In comparison with early onset group, patients in the late onset group had significantly lower scores for endocapillary hypercellularity (p = 0.041), subendothelial hyaline deposits (p = 0.022) and glomerular leukocyte infiltration (p = 0.032), but had significantly higher scores for tubular atrophy (p = 0.037) and interstitial fibrosis (p = 0.018). Regarding long-term survival and renal outcome, there was no significant difference between the two groups, although it seemed that the early onset group had a poorer renal outcome (p = 0.077, hazard ratio (HR) = 3.909, 95% CI: 0.862-17.726). CONCLUSIONS Patients with late onset lupus nephritis were usually diagnosed later; they had milder active lesions and more severe chronic lesions in renal pathology. However, the renal outcome was similar between late and early onset patients.
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Wang P, Deng L, Zhang B, Chu M, Tan Y, Fan Q, Liu C. Identification of polymorphism on leptin receptor gene of goats in southwest China. Small Rumin Res 2011. [DOI: 10.1016/j.smallrumres.2011.01.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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