201
|
Wei WQ, Feng Q, Jiang L, Waitara MS, Iwuchukwu OF, Roden DM, Jiang M, Xu H, Krauss RM, Rotter JI, Nickerson DA, Davis RL, Berg RL, Peissig PL, McCarty CA, Wilke RA, Denny JC. Characterization of statin dose response in electronic medical records. Clin Pharmacol Ther 2013; 95:331-8. [PMID: 24096969 DOI: 10.1038/clpt.2013.202] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2013] [Accepted: 09/25/2013] [Indexed: 01/14/2023]
Abstract
Efforts to define the genetic architecture underlying variable statin response have met with limited success, possibly because previous studies were limited to effect based on a single dose. We leveraged electronic medical records (EMRs) to extract potency (ED50) and efficacy (Emax) of statin dose-response curves and tested them for association with 144 preselected variants. Two large biobanks were used to construct dose-response curves for 2,026 and 2,252 subjects on simvastatin and atorvastatin, respectively. Atorvastatin was more efficacious, was more potent, and demonstrated less interindividual variability than simvastatin. A pharmacodynamic variant emerging from randomized trials (PRDM16) was associated with Emax for both. For atorvastatin, Emax was 51.7 mg/dl in subjects homozygous for the minor allele vs. 75.0 mg/dl for those homozygous for the major allele. We also identified several loci associated with ED50. The extraction of rigorously defined traits from EMRs for pharmacogenetic studies represents a promising approach to further understand the genetic factors contributing to drug response.
Collapse
Affiliation(s)
- W-Q Wei
- Department of Biomedical Informatics, Vanderbilt University, Nashville, Tennessee, USA
| | - Q Feng
- Department of Medicine, Vanderbilt University, Nashville, Tennessee, USA
| | - L Jiang
- Department of Molecular Physiology and Biophysics, Center for Human Genetics Research, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - M S Waitara
- Department of Medicine, Vanderbilt University, Nashville, Tennessee, USA
| | - O F Iwuchukwu
- Department of Medicine, Vanderbilt University, Nashville, Tennessee, USA
| | - D M Roden
- 1] Department of Medicine, Vanderbilt University, Nashville, Tennessee, USA [2] Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA [3] Oates Institute for Experimental Therapeutics, Vanderbilt University School of Medicine, Nashville, Tennessee, USA [4] Office of Personalized Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - M Jiang
- Department of Biomedical Informatics, University of Texas, Houston, Texas, USA
| | - H Xu
- Department of Biomedical Informatics, University of Texas, Houston, Texas, USA
| | - R M Krauss
- Children's Hospital Oakland Research Institute, Oakland, California, USA
| | - J I Rotter
- Institute for Translational Genomics and Population Sciences, Los Angeles BioMedical Research Institute and Department of Pediatrics, Harbor-UCLA Medical Center, Torrance, Califonia, USA
| | - D A Nickerson
- Department of Genome Sciences, University of Washington, Seattle, Washington, USA
| | - R L Davis
- Kaiser Permanente Georgia, Center for Health Research Southeast, Atlanta, Georgia, USA
| | - R L Berg
- Biomedical Informatics Research Center, Marshfield Clinic Research Foundation, Marshfield, Wisconsin, USA
| | - P L Peissig
- Biomedical Informatics Research Center, Marshfield Clinic Research Foundation, Marshfield, Wisconsin, USA
| | - C A McCarty
- Essentia Institute of Rural Health, Duluth, Minnesota, USA
| | - R A Wilke
- Department of Internal Medicine, Sanford Healthcare, Fargo, North Dakota, USA
| | - J C Denny
- Department of Biomedical Informatics, Vanderbilt University, Nashville, Tennessee, USA
| |
Collapse
|
202
|
Han MY, Dai JJ, Zhang Y, Lin Q, Jiang M, Xu XY, Liu Q. Identification of osteoarthritis biomarkers by proteomic analysis of synovial fluid. J Int Med Res 2013; 40:2243-50. [PMID: 23321181 DOI: 10.1177/030006051204000622] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVE To use proteomic analysis to identify novel candidate biomarker proteins in synovial fluid for the differential diagnosis of osteoarthritis and rheumatoid arthritis. METHODS Synovial fluid samples were analysed using surface-enhanced laser desorption/ionization time-of-flight mass spectrometry (SELDI-TOF-MS). Data were used to generate an artificial neural network (ANN). The identification of one protein peak was confirmed via Western blotting. RESULTS Fluid samples were analysed from 36 patients with osteoarthritis and 24 with rheumatoid arthritis. In total, three protein peaks (mass-to-charge ratio [m/z] 3893, 10,576 and 14,175 Da) were identified as potential biomarkers for osteoarthritis. The ANN differentiated between osteoarthritis and rheumatoid arthritis with a sensitivity of 89.4% and a specificity of 91.2%. The protein peak at m/z 10 576 was identified as S100 calcium binding protein A12 (S100A12). CONCLUSIONS A combination of SELDI-TOF-MS and ANN identified osteoarthritis biomarkers. SELDI-TOF-MS may be a useful tool in the screening of synovial fluid for osteoarthritis diagnosis.
Collapse
Affiliation(s)
- M Y Han
- Cancer Therapy and Research Centre, Shandong Provincial Hospital, Shandong University, Jinan Province, China
| | | | | | | | | | | | | |
Collapse
|
203
|
Jiang M, Chen X, Yue H, Xu W, Lin L, Wu Y, Liu B. Semen quality evaluation in a cohort of 28213 adult males from Sichuan area of south-west China. Andrologia 2013; 46:842-7. [PMID: 24079334 DOI: 10.1111/and.12168] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/30/2013] [Indexed: 02/05/2023] Open
Affiliation(s)
- M. Jiang
- Human sperm bank; West China Second University Hospital of Sichuan University; Chengdu Sichuan China
| | - X. Chen
- Department of Medical Genetics; West China Hospital of Sichuan University; Chengdu Sichuan China
- Department of Laboratory Medicine; Sichuan Provincial Hospital for Women and Children; Chengdu Sichuan China
| | - H. Yue
- Human sperm bank; West China Second University Hospital of Sichuan University; Chengdu Sichuan China
| | - W. Xu
- Sichuan University - The Chinese University of Hong Kong Joint Laboratory for Reproductive Medicine; Key Laboratory of Obstetric, Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education; West China Second University Hospital of Sichuan University; Chengdu Sichuan China
| | - L. Lin
- Human sperm bank; West China Second University Hospital of Sichuan University; Chengdu Sichuan China
| | - Y. Wu
- Human sperm bank; West China Second University Hospital of Sichuan University; Chengdu Sichuan China
| | - B. Liu
- Human sperm bank; West China Second University Hospital of Sichuan University; Chengdu Sichuan China
| |
Collapse
|
204
|
Yang W, Han L, Mandlaa M, Chen H, Jiang M, Zhang Z, Xu H. Spaceflight-induced enhancement of 2-keto-L-gulonic acid production by a mixed culture of Ketogulonigenium vulgare
and Bacillus thuringiensis. Lett Appl Microbiol 2013; 57:54-62. [DOI: 10.1111/lam.12083] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2012] [Revised: 03/17/2013] [Accepted: 04/01/2013] [Indexed: 11/28/2022]
Affiliation(s)
- W. Yang
- Institute of Applied Ecology; Chinese Academy of Sciences; Shenyang China
- University of Chinese Academy of Sciences; Beijing China
| | - L. Han
- Fermentation & Biotechnology Laboratory; Northeast Pharmaceutical Group Co. Ltd.; Shenyang China
| | - M. Mandlaa
- Institute of Applied Ecology; Chinese Academy of Sciences; Shenyang China
- University of Chinese Academy of Sciences; Beijing China
| | - H. Chen
- Fermentation & Biotechnology Laboratory; Northeast Pharmaceutical Group Co. Ltd.; Shenyang China
| | - M. Jiang
- Fermentation & Biotechnology Laboratory; Northeast Pharmaceutical Group Co. Ltd.; Shenyang China
| | - Z. Zhang
- Institute of Applied Ecology; Chinese Academy of Sciences; Shenyang China
| | - H. Xu
- Institute of Applied Ecology; Chinese Academy of Sciences; Shenyang China
| |
Collapse
|
205
|
Zhang X, Jiang M, Huang O, Xie Z, shen K. Elevated Expression of ZNF703 Confers to Tamoxifen Resistance in Breast Cancer. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt087.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
206
|
Huang H, Wang J, Fu JZ, Wang LQ, Zhao HZ, Song SY, Ji LX, Jiang M, Bai G, Luo GA. Simultaneous determination of thirteen main components and identification of eight major metabolites in Xuebijing Injection by UPLC/Q-TOF. J Anal Chem 2013. [DOI: 10.1134/s1061934813040023] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
207
|
Gong W, Gao JC, Jiang M, Yu J, He L. Modeling and Characterization of the Relationship between Cell Size and Mechanical Behavior of Microcellular PP/Mica Composites. INT POLYM PROC 2013. [DOI: 10.3139/217.2339] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
The microcellular foamed polypropylene (PP)/mica composites were prepared through chemical microcellular injection to investigate the relationship between the mechanical behavior and the cell size. The mechanical behavior model of the microcellular foams is built based on the elastic stress/strain field. The mechanical behavior of the microcellular composites coincides well with the theoretical model. Under loading the large and non uniform cells are in a state of plane strain, which leads to low tensile and impact strengths, whereas small and uniform cells are in a state of plane stress, which contributes to the transition from brittle to tough fracture behavior in the microcellular PP/mica composite.
Collapse
Affiliation(s)
- W. Gong
- College of Materials Science and Engineering, Chongqing University, Chongqing, PRC
- National Engineering Research Center for Modified Polymer Materials, Guiyang, PRC
- Department of Material and Building Engineering, Guizhou Normal University, Guiyang, PRC
| | - J. C. Gao
- College of Materials Science and Engineering, Chongqing University, Chongqing, PRC
| | - M. Jiang
- National Engineering Research Center for Modified Polymer Materials, Guiyang, PRC
| | - J. Yu
- National Engineering Research Center for Modified Polymer Materials, Guiyang, PRC
| | - L. He
- National Engineering Research Center for Modified Polymer Materials, Guiyang, PRC
| |
Collapse
|
208
|
Eastmond GC, Jiang M, Malinconico M. Morphologies and properties of polyblends. II: Blends of poly(methyl methacrylate) and a chlorine-containing polycarbonate; effect of added copolymer. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/pi.4980190309] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
209
|
|
210
|
Dai C, Zheng CQ, Jiang M. Letter: serotonin transporter gene polymorphisms and the irritable bowel syndrome. Aliment Pharmacol Ther 2013; 37:657-8. [PMID: 23406411 DOI: 10.1111/apt.12222] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2013] [Accepted: 01/05/2013] [Indexed: 12/11/2022]
|
211
|
Jiang M, Mou CZ, Han T, Wang M, Yang W. Thrombospondin-1 and transforming growth factor-β1 levels in prolactinoma and their clinical significance. J Int Med Res 2013; 40:1284-94. [PMID: 22971480 DOI: 10.1177/147323001204000407] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To investigate the roles of angiogenesis, thrombospondin-1 (TSP-1) and transforming growth factor-β1 (TGF-β1) in invasive and noninvasive prolactinoma. METHODS TSP-1 and TGF-β1 protein were examined using immunohistochemistry and Western blotting in 81 prolactinomas. Angiogenesis was assessed by measuring microvessel density via CD34 immunostaining. RESULTS Microvessel density was significantly higher in invasive prolactinomas than in noninvasive prolactinomas. Immunohistochemistry demonstrated that significantly fewer invasive prolactinomas were positive for TSP-1 compared with noninvasive prolactinomas (17.9% versus 50.0%, respectively), and significantly higher numbers of invasive prolactinomas were positive for TGF-β1 compared with noninvasive prolactinomas (82.1% versus 42.9%, respectively). Microvessel density was significantly lower in TSP-1-positive prolactinomas than in TSP-1-negative prolactinomas, and significantly higher in TGF-β1-positive prolactinomas than in TGF-β1-negative prolactinomas. CONCLUSIONS These results suggest a close relationship between angiogenesis and tumour invasiveness in prolactinoma. TSP-1 and TGF-β1 may play important roles in the progression of prolactinoma, by affecting angiogenesis.
Collapse
Affiliation(s)
- M Jiang
- Department of Neurosurgery, Provincial Hospital Affiliated to Shandong University, Jinan, China
| | | | | | | | | |
Collapse
|
212
|
Liu X, Yang Y, Wang X, Wang Y, Jiang M, Shi C. Potential energy curves and calculations of spectroscopic constants for the ground state of AlC and AlN. J STRUCT CHEM+ 2013. [DOI: 10.1134/s0022476613010381] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
213
|
Qi Y, Jiang M, Yuan Y, Bi Y, Zheng B, Guo X, Huang X, Zhou Z, Sha J. ADP-ribosylation factor-like 3, a manchette-associated protein, is essential for mouse spermiogenesis. Mol Hum Reprod 2013; 19:327-35. [DOI: 10.1093/molehr/gat001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
|
214
|
Wei W, Jiang M, Luo L, Li Z, Wang P, Dong W. Colorectal cancer susceptibility variants alter risk of breast cancer in a Chinese Han population. Genet Mol Res 2013; 12:6268-74. [DOI: 10.4238/2013.december.4.14] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
215
|
Su Q, Su W, Lv QZ, Jiang M, Lu X, Sheng ZM, Grobe R. Magnetic control of the pair creation in spatially localized supercritical fields. Phys Rev Lett 2012; 109:253202. [PMID: 23368458 DOI: 10.1103/physrevlett.109.253202] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2012] [Indexed: 06/01/2023]
Abstract
We examine the impact of a perpendicular magnetic field on the creation mechanism of electron-positron pairs in a supercritical static electric field, where both fields are localized along the direction of the electric field. In the case where the spatial extent of the magnetic field exceeds that of the electric field, quantum field theoretical simulations based on the Dirac equation predict a suppression of pair creation even if the electric field is supercritical. Furthermore, an arbitrarily small magnetic field outside the interaction zone can bring the creation process even to a complete halt, if it is sufficiently extended. The mechanism for this magnetically induced complete shutoff can be associated with a reopening of the mass gap and the emergence of electrically dressed Landau levels.
Collapse
Affiliation(s)
- Q Su
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | | | | | | | | | | | | |
Collapse
|
216
|
Chen W, Xiao Liu Z, Oh JE, Shin KH, Kim RH, Jiang M, Park NH, Kang MK. Grainyhead-like 2 (GRHL2) inhibits keratinocyte differentiation through epigenetic mechanism. Cell Death Dis 2012; 3:e450. [PMID: 23254293 PMCID: PMC3542624 DOI: 10.1038/cddis.2012.190] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
We recently identified Grainyhead-like 2 (GRHL2), a mammalian homolog of Grainyhead in Drosophila, to be a novel transcription factor that regulates hTERT gene expression and enhances proliferation of normal human epidermal keratinocytes (NHEK). In the current study, we show that GRHL2 impairs keratinocyte differentiation through transcriptional inhibition of the genes clustered at the epidermal differentiation complex (EDC), located at chromosome 1q21. Gene expression profiling and subsequent in vitro assays revealed consistent downregulation of EDC genes, for example, IVL, KRT1, FLG, LCEs, and SPRRs, in NHEK expressing exogenous GRHL2. In vivo binding assay by chromatin immunoprecipitation revealed GRHL2 association at the promoter regions of its target genes, many of which belong to EDC. Exogenous GRHL2 expression also inhibited recruitment of histone demethylase Jmjd3 to the EDC gene promoters and enhanced the level of histone 3 Lys 27 trimethylation enrichment at these promoters. Survey of GRHL2 expression in human skin tissues demonstrated enhanced protein and mRNA levels in chronic skin lesions with impaired keratinocyte differentiation, for example, atopic dermatitis and psoriasis, compared with normal epidermis. These data indicate that GRHL2 impairs epidermal differentiation by inhibiting EDC gene expression through epigenetic mechanisms and support its role in the hyperproliferative skin diseases.
Collapse
Affiliation(s)
- W Chen
- UCLA School of Dentistry, Los Angeles, CA 90095, USA
| | | | | | | | | | | | | | | |
Collapse
|
217
|
Strand DW, Jiang M, Murphy TA, Yi Y, Konvinse KC, Franco OE, Wang Y, Young JD, Hayward SW. PPARγ isoforms differentially regulate metabolic networks to mediate mouse prostatic epithelial differentiation. Cell Death Dis 2012; 3:e361. [PMID: 22874998 PMCID: PMC3434663 DOI: 10.1038/cddis.2012.99] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Recent observations indicate prostatic diseases are comorbidities of systemic metabolic dysfunction. These discoveries revealed fundamental questions regarding the nature of prostate metabolism. We previously showed that prostate-specific ablation of PPARγ in mice resulted in tumorigenesis and active autophagy. Here, we demonstrate control of overlapping and distinct aspects of prostate epithelial metabolism by ectopic expression of individual PPARγ isoforms in PPARγ knockout prostate epithelial cells. Expression and activation of either PPARγ 1 or 2 reduced de novo lipogenesis and oxidative stress and mediated a switch from glucose to fatty acid oxidation through regulation of genes including Pdk4, Fabp4, Lpl, Acot1 and Cd36. Differential effects of PPARγ isoforms included decreased basal cell differentiation, Scd1 expression and triglyceride fatty acid desaturation and increased tumorigenicity by PPARγ1. In contrast, PPARγ2 expression significantly increased basal cell differentiation, Scd1 expression and AR expression and responsiveness. Finally, in confirmation of in vitro data, a PPARγ agonist versus high-fat diet (HFD) regimen in vivo confirmed that PPARγ agonization increased prostatic differentiation markers, whereas HFD downregulated PPARγ-regulated genes and decreased prostate differentiation. These data provide a rationale for pursuing a fundamental metabolic understanding of changes to glucose and fatty acid metabolism in benign and malignant prostatic diseases associated with systemic metabolic stress.
Collapse
Affiliation(s)
- D W Strand
- Department of Urologic Surgery, Vanderbilt-Ingram Comprehensive Cancer Center, Vanderbilt University School of Engineering, and Vanderbilt University Medical Center, Nashville, TN 37232-2765, USA
| | | | | | | | | | | | | | | | | |
Collapse
|
218
|
Guo Q, Li HY, Zhou YP, Li M, Chen XK, Liu H, Peng HL, Yu HQ, Chen X, Liu N, Liang LH, Zhao QZ, Jiang M. CURB-65 score predicted mortality in community-acquired pneumonia better than IDSA/ATS minor criteria in a low-mortality-rate setting. Eur J Clin Microbiol Infect Dis 2012; 31:3281-6. [PMID: 22806350 DOI: 10.1007/s10096-012-1693-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2012] [Accepted: 06/26/2012] [Indexed: 11/26/2022]
Abstract
The CURB-65 scoring system performs well at identifying patients with pneumonia who have a low risk of death. Whether it predicts mortality in community-acquired pneumonia (CAP) better than the 2007 Infectious Disease Society of America (IDSA)/American Thoracic Society (ATS) minor criteria in low-mortality-rate settings is not clear. The purpose of this study was to determine the hypothesis.A total of 1,230 adult inpatients admitted to our hospital from 2005 to 2009 for CAP were reviewed retrospectively.The hospital mortality was 1.3 %. Percentage mortality increased significantly with CURB-65 score and the increasing number of IDSA/ATS minor criteria present. The number of CURB-65 criteria or IDSA/ATS minor criteria present had significant increased odds ratios for mortality of 7.547 and 2.711, respectively. The sensitivities of a CURB-65 score of ≥ 3 and the presence of ≥ 3 minor criteria in predicting mortality was 25 % and 37.5 %, which increased to 75 % and 62.5 %, while the cut-off values reduced to ≥ 2 criteria, respectively. The area under the receiver operating characteristic curve for CURB-65 was greater than the corresponding area for IDSA/ATS minor criteria in predicting hospital mortality (0.915 vs. 0.805, p = 0.0091).CURB-65 score predicted hospital mortality better than IDSA/ATS minor criteria, and a CURB-65 score of ≥ 2 or the presence of ≥ 2 minor criteria might be more valuable cut-off values for "severe" CAP in a low-mortality-rate setting.
Collapse
Affiliation(s)
- Q Guo
- Department of Respiratory Medicine, Affiliated Futian Hospital, Guangdong Medical College, Shenzhen, Guangdong, China, 518033.
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
219
|
Sun M, Jiang K, Zhang F, Zhang D, Shen A, Jiang M, Shen X, Ma L. Effects of various salinities on Na(+)-K(+)-ATPase, Hsp70 and Hsp90 expression profiles in juvenile mitten crabs, Eriocheir sinensis. Genet Mol Res 2012; 11:978-86. [PMID: 22576924 DOI: 10.4238/2012.april.19.3] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Eriocheir sinensis is a euryhaline crab migrating from sea to freshwater habitats during the juvenile stage. We used quantitative real-time polymerase chain reaction (qRT-PCR) to investigate the gene expression profile of Na(+)-K(+)-ATPase, Hsp70 (heat shock protein 70) and Hsp90 in megalopa exposed to salinities of 0, 2, 5, 10, and 15 parts per thousand. Both low and high salinities markedly stimulated expression of Na(+)-K(+)-ATPase, Hsp70 and Hsp90 genes of Chinese mitten crab megalopa; salinity had different effects on Na(+)-K(+)-ATPase, Hsp70 and Hsp90 levels depending on the duration of salinity stress, implying that Na(+)-K(+)-ATPase, Hsp70 and Hsp90 may play an important role in salinity tolerance in this crab species.
Collapse
Affiliation(s)
- M Sun
- Key Laboratory of Marine and Estuarine Fisheries Resources and Ecology, Ministry of Agriculture of China, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China
| | | | | | | | | | | | | | | |
Collapse
|
220
|
Guo Q, Li HY, Zhou YP, Li M, Chen XK, Liu H, Peng HL, Yu HQ, Chen X, Liu N, Liang LH, Zhao QZ, Jiang M. Compliance with the CURB-65 score and the consequences of non-implementation. Int J Tuberc Lung Dis 2012; 15:1697-702. [PMID: 22118182 DOI: 10.5588/ijtld.11.0169] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The CURB-65 (confusion, urea >7 mmol/l, respiratory rate ≥ 30 breaths/min, low blood pressure and age ≥ 65 years) score is a simple, well-validated tool for the assessment of severity in community-acquired pneumonia (CAP). It is unknown whether it is used routinely in China. OBJECTIVE To determine the frequency of use of the CURB-65 score in routine hospital practice and the consequences of non-implementation. METHODS A retrospective analysis of medical records from 1230 in-patients with CAP in a Chinese medical college-affiliated hospital. RESULTS No CAP patient underwent the CURB-65 test at admission. Based on the British Thoracic Society guidelines, the 716 (58.2%) in-patients with a CURB65 score of 0 and the 402 (32.7%) in-patients with CURB-65 score of 1 should have received ambulatory treatment, whereas the 14 (1.2%) patients with CURB65 scores of ≥ 3 should have been admitted to the critical care unit. The maximum excess total annual costs for managing CAP patients with CURB-65 scores of 0 and 1 were estimated at respectively US$94 383.12 and US$66 313.92 in the hospital. CONCLUSIONS The CURB-65 scoring tool in patients with CAP was not applied in routine hospital practice, resulting in inappropriate hospitalisation and excess costs.
Collapse
Affiliation(s)
- Q Guo
- Department of Respiratory Medicine, Affiliated Futian Hospital, Guangdong Medical College, Shenzhen, Guangdong, China.
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
221
|
Wang Y, Han W, Jiang M, Lu C, Li X, Zhang X, Li J. Case Report A novel mutation of the MFN2 gene in a Chinese family with Charcot-Marie-Tooth disease. Genet Mol Res 2012; 11:1454-9. [DOI: 10.4238/2012.may.18.5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
222
|
Xu GS, Wan BN, Wang HQ, Guo HY, Zhao HL, Liu AD, Naulin V, Diamond PH, Tynan GR, Xu M, Chen R, Jiang M, Liu P, Yan N, Zhang W, Wang L, Liu SC, Ding SY. First evidence of the role of zonal flows for the L-H transition at marginal input power in the EAST tokamak. Phys Rev Lett 2011; 107:125001. [PMID: 22026773 DOI: 10.1103/physrevlett.107.125001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2011] [Indexed: 05/31/2023]
Abstract
A quasiperiodic Er oscillation at a frequency of <4 kHz, much lower than the geodesic-acoustic-mode frequency, with a modulation in edge turbulence preceding and following the low-to-high (L-H) confinement mode transition, has been observed for the first time in the EAST tokamak, using two toroidally separated reciprocating probes. Just prior to the L-H transition, the Er oscillation often evolves into intermittent negative Er spikes. The low-frequency Er oscillation, as well as the Er spikes, is strongly correlated with the turbulence-driven Reynolds stress, thus providing first evidence of the role of the zonal flows in the L-H transition at marginal input power. These new findings not only shed light on the underlying physics mechanism for the L-H transition, but also have significant implications for ITER operations close to the L-H transition threshold power.
Collapse
Affiliation(s)
- G S Xu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
223
|
Jiang M, Ma J, Qiu LM. Cryoprotective effect of an insect antifreeze protein MpAFP 698 and its mutants from the desert beetle Microdera punctipennis. Cryo Letters 2011; 32:436-446. [PMID: 22020466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
An insect antifreeze protein, MpAFP698, from the desert beetle Microdera punctipennis, shares 77% similarity with TmTHP (YL-3) from Tenebrio molitor. The predicted tertiary structure for MpAFP698 was modeled as a regular A-helix with TCT motifs arrayed to form the putative ice-binding surface. This model was validated via site-directed mutagenesis. The results suggest that the desert beetle in central Asia has evolved antifreeze proteins similar to those from North America continent. In an additional study, the recombinant MpAFP698 and its mutants were expressed in Escherichia coli strain BL21 (DE3). The thermal hysteresis activity of MpAFP698 was 1.73 degree C at 1.0 mg/ml. MpAFP698 was also tested by in vitro antifreeze activity assay to evaluate its cryoprotective effect at -20 degree C. MpAFP698 displays high cryoprotective effect on bacteria cells at freezing temperatures.
Collapse
Affiliation(s)
- M Jiang
- College of Life Science and Technology, Xinjiang University, Urumqi, China
| | | | | |
Collapse
|
224
|
Sun J, Hou JL, Xie Q, Li XH, Zhang JM, Wang YM, Wang H, Lai JY, Chen SJ, Jia JD, Sheng JF, Chan HLY, Wang JF, Li MKK, Jiang M, Popescu M, Sung JJY. Randomised clinical trial: efficacy of peginterferon alfa-2a in HBeAg positive chronic hepatitis B patients with lamivudine resistance. Aliment Pharmacol Ther 2011; 34:424-31. [PMID: 21692822 DOI: 10.1111/j.1365-2036.2011.04750.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND Previous studies suggested that a finite course of peginterferon alfa-2a may offer an alternative rescue therapy for patients with lamivudine resistance. However, because of the limitation of study design and small sample size, it is difficult to make definitive conclusion. AIM To explore the role of peginterferon alfa-2a, in the rescue treatment of HBeAg-positive chronic hepatitis B patients with lamivudine resistance. METHODS In this randomised study, chronic hepatitis B patients with lamivudine resistance were treated with peginterferon alfa-2a for 48 weeks (n=155) or adefovir for 72 weeks (n=80). All enrolled patients were treated with lamivudine for the first 12weeks. RESULTS At 6 months posttreatment, 14.6% (18/123) of peginterferon alfa-2a-treated patients achieved HBeAg seroconversion, in contrast to 3.8% (3/80) of adefovir-treated patients after 72 weeks continuous therapy (P=0.01). For peginterferon alfa-2a-treated patients, the rate of HBeAg seroconversion at week 72 was significantly higher in patients who had HBsAg decline >0.5 Log(10) IU/mL from baseline at week 24, compared with patients with HBsAg decline ≤0.5 Log(10) IU/mL from baseline at week 24 (25.5% vs. 7.7%, P=0.01). After 72 weeks continuous adefovir treatment, 22.5% of patients achieved HBV DNA <80 IU/mL, compared with 10.6% in peginterferon alfa-2a-treated patients at 6months off-treatment (P=0.02). CONCLUSIONS Overall, the response to peginterferon alfa-2a among patients with lamivudine resistance was suboptimal. HBeAg seroconversion rate at week 72 by 48 weeks peginterferon alfa-2a treatment was higher than continuous adefovir therapy. Monitoring HBsAg levels can help to predict response to peginterferon alfa-2a.
Collapse
Affiliation(s)
- J Sun
- Nanfang Hospital, Southern Medical University, Guangzhou, China
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
225
|
Wang L, Sun L, Huang J, Jiang M. Cyclin-dependent kinase inhibitor 3 (CDKN3) novel cell cycle computational network between human non-malignancy associated hepatitis/cirrhosis and hepatocellular carcinoma (HCC) transformation. Cell Prolif 2011; 44:291-9. [PMID: 21535270 DOI: 10.1111/j.1365-2184.2011.00752.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The relationship of cyclin-dependent kinase inhibitor 3 (CDKN3) with tumours has previously been presented in a number of publications. However, the molecular network and interpretation of CDKN3 through the cell cycle between non-malignancy associated hepatitis/cirrhosis and hepatocellular carcinoma (HCC) have remained to be elucidated. Here, we have constructed and analysed significant high expression gene CDKN3 activated and inhibited cell cycle networks from 25 HCC versus 25 non-malignancy associated hepatitis/cirrhosis patients (viral infection HCV or HBV) in GEO Dataset GSE10140-10141, by combination of a gene regulatory network inference method based on linear programming, and decomposition procedure using CapitalBio MAS 3.0 software, based on integration of public databases including Gene Ontology, KEGG, BioCarta, GenMapp, Intact, UniGene, OMIM, and others. Comparing the same and differently activated and inhibited CDKN3 networks with GO analysis, between non-malignancy associated hepatitis/cirrhosis and HCC, our results suggest a CDKN3 cell cycle network (i) with stronger DNA replication and with weaker ubiquitin-dependent protein catabolism as common characteristics in both non-malignancy associated hepatitis/cirrhosis and HCC; (ii) with more cell division and weaker mitotic G2 checkpoint in non-malignancy associated hepatitis/cirrhosis; (iii) with stronger cell cycle and weaker cytokinesis, as a result forming multinucleate cells in HCC. Thus, it is useful to identify CDKN3 cell cycle networks for comprehension of molecular mechanism between non-malignancy associated hepatitis/cirrhosis and HCC transformation.
Collapse
Affiliation(s)
- L Wang
- Biomedical Center, School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing, China.
| | | | | | | |
Collapse
|
226
|
Zhang W, Chang JF, Wan BN, Xu GS, Xiao CJ, Li B, Xu CS, Yan N, Wang L, Liu SC, Jiang M, Liu P. Fast reciprocating probe system on the EAST superconducting tokamak. Rev Sci Instrum 2010; 81:113501. [PMID: 21133465 DOI: 10.1063/1.3499237] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A new fast reciprocating probe system (FRPS) has been built and installed on the outer midplane of the EAST tokamak to investigate the profiles of the boundary plasma parameters such as electron density and temperature. The system consists of a two-stage motion drive mechanism: slow motion and fast motion. The fast motion is powered by a servo motor, which drives the probe horizontally up to 50 cm to scan the edge region of the EAST tokamak. The maximum velocity achieved is 2 m/s. High velocity and flexible control of the fast motion are the remarkable features of this FRPS. A specially designed connector installed at the front end of the probe shaft makes it easy to install or replace the probe head on FRPS. During the latest experimental campaign in the spring of 2010, a probe head with seven tips, including two tips for a Mach probe, has been used. An example is given for simultaneous profile measurements of the plasma temperature, plasma density, and the plasma flow velocity.
Collapse
Affiliation(s)
- W Zhang
- Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei 230031, People's Republic of China.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
227
|
Jiang M, Ma L, Ruan X, Xu Y. e0619 Randomised study on the therapeutic efficacy of added treatment with kanli granule in patients with chronic heart failure. Heart 2010. [DOI: 10.1136/hrt.2010.208967.619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
228
|
Abstract
BACKGROUND There have been no studies on the prevalence of types of human papillomavirus (HPV) in cutaneous warts that focus on warts in toe webs (WTW). There is no documented association between HPV 7 and WTW. OBJECTIVES To explore the clinical and histopathological features of WTW, and the distribution of HPV genotypes in patients with WTW. METHODS The study group consisted of 20 patients with WTW; 31 patients with typical verruca vulgaris (VV) were enrolled as the disease control group, and 53 patients with tinea pedis and 48 healthy volunteers were enrolled as the disease-negative control group. Tissue specimens were analysed for clinical and histological features and distribution of HPV genotypes. Polymerase chain reaction (PCR)-based direct sequencing, TA cloning and type-specific PCR (TS-PCR) were performed in the WTW and VV groups. Interdigital scale specimens from patients with tinea pedis and from healthy volunteers were analysed for HPV DNA by nested PCR and TS-PCR (HPV 7). RESULTS All the patients with WTW were male and nearly all were immunocompetent; their mean age was 41 +/- 10 years. The lesions presented mainly as soft, friable and vegetating clusters. HPV 7 was the predominant genotype in WTW with a frequency of 80% (16/20). Fourteen specimens were taken for histopathological examination. The most frequent histological results (seven out of 14) revealed characteristics of HPV 7 infections such as heavily stained cells containing medium-sized keratohyaline granules and a pronounced hyperkeratosis with parakeratosis. TA cloning showed that the sequence shared 90% or more homology with the HPV genotype in direct sequencing. No HPV 7 DNA was found in the scales taken from toe webs without warts. CONCLUSIONS This is the first study evaluating the prevalence of HPV types in WTW and the first report of the association between HPV 7 and specific subgroups of patients with warts.
Collapse
Affiliation(s)
- C Sun
- Zhenjiang Center for Disease Control and Prevention, Jiangsu Province, Zhenjiang 212000, China
| | | | | | | | | |
Collapse
|
229
|
Jiang M, Fernandez S, Jerome WG, He Y, Yu X, Cai H, Boone B, Yi Y, Magnuson MA, Roy-Burman P, Matusik RJ, Shappell SB, Hayward SW. Disruption of PPARgamma signaling results in mouse prostatic intraepithelial neoplasia involving active autophagy. Cell Death Differ 2009; 17:469-81. [PMID: 19834493 PMCID: PMC2821953 DOI: 10.1038/cdd.2009.148] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Peroxisome proliferator-activated receptor-gamma (PPARgamma) regulates the interface between cellular lipid metabolism, redox status and organelle differentiation. Conditional prostatic epithelial knockout of PPARgamma in mice resulted in focal hyperplasia which developed into mouse prostatic intraepithelial neoplasia (mPIN). The grade of PIN became more severe with time. Electron microscopy (EM) showed accumulated secondary lysosomes containing cellular organelles and debris suggestive of autophagy. Consistent with this analysis the autophagy marker LC-3 was found to be upregulated in areas of PIN in PPARgamma KO tissues. We selectively knocked down PPARgamma2 isoform in wild-type mouse prostatic epithelial cells and examined the consequences of this in a tissue recombination model. Histopathologically grafted tissues resembled the conditional PPARgamma KO mouse prostates. EM studies of PPARgamma- and PPARgamma2-deficient epithelial cells in vitro were suggestive of autophagy, consistent with the prostatic tissue analysis. This was confirmed by examining expression of beclin-1 and LC-3. Gene expression profiling in PPARgamma-/gamma2-deficient cells indicated a major dysregulation of cell cycle control and metabolic signaling networks related to peroxisomal and lysosomal maturation, lipid oxidation and degradation. The putative autophagic phenotypes of PPARgamma-deficient cells could be rescued by re-expression of either gamma1 or gamma2 isoform. We conclude that disruption of PPARgamma signaling results in autophagy and oxidative stress during mPIN pathogenesis.
Collapse
Affiliation(s)
- M Jiang
- Department of Urologic Surgery, A-1302 MCN, Vanderbilt University Medical Center, Nashville, TN 37232-2765, USA.
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
230
|
Huang YH, Sun MJ, Jiang M, Fu BY. Immunohistochemical localization of glucagon and pancreatic polypeptide on rat endocrine pancreas: coexistence in rat islet cells. Eur J Histochem 2009; 53:81-5. [PMID: 19683981 DOI: 10.4081/ejh.2009.81] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
We used immunofluorescence double staining method to investigate the cellular localization of glucagon and pancreatic polypeptide (PP) in rat pancreatic islets. The results showed that both A-cells (glucagon-secreting cells) and PP-cells (PP-secreting cells) were located in the periphery of the islets. However, A-cells and PP-cells had a different regional distribution. Most of A-cells were located in the splenic lobe but a few of them were in the duodenal lobe of the pancreas. In contrast, the majority of PP-cells were found in the duodenal lobe and a few of them were in the splenic lobe of the pancreas. Furthermore, we found that 67.74% A-cells had PP immunoreactivity, 70.92% PP-cells contained glucagon immunoreactivity with immunofluorescence double staining. Our data support the concept of a common precursor stem cell for pancreatic hormone-producing cells.
Collapse
Affiliation(s)
- Y H Huang
- Department of Gastroenterology, The First Affiliated Hospital, China Medical University, Shenyang , China
| | | | | | | |
Collapse
|
231
|
|
232
|
Huang YH, Sun MJ, Jiang M, Fu BY. Immunohistochemical localization of glucagon and pancreatic polypeptide on rat endocrine pancreas: coexistence in rat islet cells. Eur J Histochem 2009; 53:e10. [PMID: 30256861 PMCID: PMC3167281 DOI: 10.4081/ejh.2009.e10] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/20/2009] [Indexed: 11/22/2022] Open
Abstract
We used immunofluorescence double staining method to investigate the cellular localization of glucagon and pancreatic polypeptide (PP) in rat pancreatic islets. The results showed that both A-cells (glucagon-secreting cells) and PP-cells (PP-secreting cells) were located in the periphery of the islets. However, A-cells and PP-cells had a different regional distribution. Most of A-cells were located in the splenic lobe but a few of them were in the duodenal lobe of the pancreas. In contrast, the majority of PP-cells were found in the duodenal lobe and a few of them were in the splenic lobe of the pancreas. Furthermore, we found that 67.74% A-cells had PP immunoreactivity, 70.92% PP-cells contained glucagon immunoreactivity with immunofluorescence double staining. Our data support the concept of a common precursor stem cell for pancreatic hormone-producing cells.
Collapse
Affiliation(s)
- Y H Huang
- Department of Gastroenterology, The First Affiliated Hospital, China Medical University, Shenyang, China
| | - M J Sun
- Department of Gastroenterology, The First Affiliated Hospital, China Medical University, Shenyang, China
| | - M Jiang
- Department of Gastroenterology, The First Affiliated Hospital, China Medical University, Shenyang, China
| | - B Y Fu
- Department of Gastroenterology, The First Affiliated Hospital, China Medical University, Shenyang, China
| |
Collapse
|
233
|
Yi G, Wang J, Ruan C, Jiang M, Mo Z, Li X, Zeng Y. Abstract: S2-20 EFFECTS OF PPARΔ AGONIST GW501516 ON MMP-2 EXPRESSION INDUCED BY OX-LDL OR HIGH GLUCOSE IN HUVEC. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)71475-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
234
|
Yi G, Ruan C, Wang J, Jiang M, Zeng Y, Li X, Zhang Q, Li Y. Abstract: S2-19 THE ROLE OF PPARΔ IN MMP-2 EXPRESSION AND APOPTOSIS OF HUVEC INDUCED BY OX-LDL AND HIGH GLUCOSE. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)71474-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
235
|
Lim B, Jiang M, Camargo PHC, Cho EC, Tao J, Lu X, Zhu Y, Xia Y. Pd-Pt Bimetallic Nanodendrites with High Activity for Oxygen Reduction. Science 2009; 324:1302-5. [DOI: 10.1126/science.1170377] [Citation(s) in RCA: 2623] [Impact Index Per Article: 174.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
236
|
Chen P, Hu T, Jiang M, Guo D. [Synthesis in Escherichia coli cells and characterization of the active exoribonuclease of severe acute respiratory syndrome coronavirus]. Mol Biol (Mosk) 2009; 43:446-454. [PMID: 19548531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The nsp14 protein, an exoribonuclease of the DEDD superfamily encoded by severe acute respiratory syndrome coronavirus (SARS-CoV), was expressed in fusion with different affinity tags. The recombinant nspl4 proteins with either GST fusion or 6-histidine tag were shown to possess ribonuclease activity but nspl4 with a short MGHHHHHHGS tag sequence at the N-terminus increased the solubility of nspl4 protein and facilitated the protein purification. Mutations of the conserved residues of nspl4 resulted in significant attenuation but not abolishment of the ribonuclease activity. Combination of fluorescence and circular dichroism spectroscopy analyses showed that the conformational stability of nsp14 protein varied with many external factors such as pH, temperature and presence of denaturing chemicals. These results provide new information on the structural features and would be helpful for further characterization of this functionally important protein.
Collapse
|
237
|
Chen P, Hu T, Jiang M, Guo D. Synthesis in Escherichia coli cells and characterization of the active exoribonuclease of severe acute respiratory syndrome coronavirus. Mol Biol 2009; 43:410-417. [PMID: 32214468 PMCID: PMC7089200 DOI: 10.1134/s0026893309030091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2008] [Accepted: 04/30/2008] [Indexed: 11/23/2022]
Abstract
The nsp14 protein, an exoribonuclease of the DEDD superfamily encoded by severe acute respiratory syndrome coronavirus (SARS-CoV), was expressed in fusion with different affinity tags. The recombinant nsp14 proteins with either GST fusion or 6-histidine tag were shown to possess ribonuclease activity but nsp14 with a short MGHHHHHHGS tag sequence at the N-terminus increased the solubility of nsp14 protein and facilitated the protein purification. Mutations of the conserved residues of nsp14 resulted in significant attenuation but not abolishment of the ribonuclease activity. Combination of fluorescence and circular dichroism spectroscopy analyses showed that the conformational stability of nsp14 protein varied with many external factors such as pH, temperature and presence of denaturing chemicals. These results provide new information on the structural features and would be helpful for further characterization of this functionally important protein.
Collapse
Affiliation(s)
- P Chen
- 1State Key Laboratory of Virology and Modern Virology Research Centre, College of Life Sciences, Wuhan University, Wuhan, 430072 PR. China.,2Department of Pathophysiology, Basic Medical College of Zhengzhou University, Zhengzhou, 450001 PR. China
| | - T Hu
- 1State Key Laboratory of Virology and Modern Virology Research Centre, College of Life Sciences, Wuhan University, Wuhan, 430072 PR. China
| | - M Jiang
- 1State Key Laboratory of Virology and Modern Virology Research Centre, College of Life Sciences, Wuhan University, Wuhan, 430072 PR. China
| | - D Guo
- 1State Key Laboratory of Virology and Modern Virology Research Centre, College of Life Sciences, Wuhan University, Wuhan, 430072 PR. China
| |
Collapse
|
238
|
Ning H, Yang F, Jiang M, Hu L, Feng K, Zhang J, Yu Z, Li B, Xu C, Li Y, Wang J, Hu J, Lou X, Chen H. Reply to “Reply to ‘The correlation between cotransplantation of mesenchymal stem cells and higher recurrence rates in hematologic malignancy patients: outcome of a pilot clinical study’ by Ning H et al.” by Behre et al. Leukemia 2009. [DOI: 10.1038/leu.2008.151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
239
|
Kurczy M, Piehowski P, Parry S, Jiang M, Chen G, Ewing A, Winograd N. Which is more important in bioimaging SIMS experiments-The sample preparation or the nature of the projectile? Appl Surf Sci 2008; 255:1298-1304. [PMID: 19554199 PMCID: PMC2700758 DOI: 10.1016/j.apsusc.2008.05.139] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Sample preparation is central to acquiring meaningful molecule-specific images with SIMS, especially when submicron lateral resolution is involved. The issue is to maintain the distribution of target molecules while attempting to introduce biological cells or tissue into the high vacuum environment of the mass spectrometer. Here we compare freeze-drying, freeze-etching, freeze-fracture and trehalose vitrification as possible strategies for these experiments. The results show that the prospects for successful imaging experiments are greatly improved with all of these methods when using cluster ion bombardment, particularly C(60) (+) ions, not only due to increased sensitivity of this projectiles, but also since it removes contamination overlayers without insult to the underlying chemistry. The emergence of 3-dimensional imaging capabilities also suggests that sample preparation should not perturb the 3-dimensional morphology of the cell, a situation not generally possible during freeze-drying. Hence, sample preparation and projectile type are strongly coupled parameters for bioimaging with mass spectrometry.
Collapse
Affiliation(s)
- M.E. Kurczy
- Department of Chemistry, Penn State University, 104 Chemistry Building, University Park, PA 16802, United States
| | - P.D. Piehowski
- Department of Chemistry, Penn State University, 104 Chemistry Building, University Park, PA 16802, United States
| | - S.A. Parry
- Department of Chemistry, Penn State University, 104 Chemistry Building, University Park, PA 16802, United States
| | - M. Jiang
- Department of Biology, Penn State University, 224 Life Sciences Building, University Park, PA 16802, United States
| | - G. Chen
- Department of Biology, Penn State University, 224 Life Sciences Building, University Park, PA 16802, United States
| | - A.G. Ewing
- Department of Chemistry, Penn State University, 104 Chemistry Building, University Park, PA 16802, United States
- Department of Chemistry, Gothenburg University, Kemivägen 4, SE-41296 Gothenburg, Sweden
| | - Nicholas Winograd
- Department of Chemistry, Penn State University, 104 Chemistry Building, University Park, PA 16802, United States
| |
Collapse
|
240
|
Jiang M, Cao L, Zhang R. Effects of Acacia (Acacia auriculaeformisA. Cunn)-associated fungi on mustard (Brassica juncea(L.) Coss. var. foliosa Bailey) growth in Cd- and Ni-contaminated soils. Lett Appl Microbiol 2008; 47:561-5. [DOI: 10.1111/j.1472-765x.2008.02454.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
241
|
Abstract
The paper presents the results of an investigation into the role of export credit agencies (ECAs) in international private-finance initiative/public–private partnership (PFI/PPP) projects. The research was based on an assessment of published literature and a study of relevant official reports. The use of PFI/PPP procurement to deliver essential infrastructure continues to grow worldwide. In developing countries, funding raised locally through taxation, the money markets and official development assistance is inadequate to meet the required needs. PFI/PPP projects with foreign private participation provide a vital contribution to the acceleration of economic growth and provision of essential services and infrastructure. It is demonstrated in this paper that ECAs play a number of key multiple roles in international PFI/PPP projects. First, the role of ECAs can be as lenders. ECA loans can be offered to exporters, investors or directly to the special-purpose vehicle. ECAs also play the role of insurers/guarantors. ECAs are diversified in country risks and therefore best placed to cover political and non-commercial risks. They can provide cover for non-commercial risks which include: currency inconvertibility and transfer restrictions, expropriation, war and civil disturbance or breach of contract, etc. The professional advisory role includes arranging project finance and a disputes resolution service. ECAs play key multiple roles in the realisation of international PFI/PPP projects. They are clearly central to efficient risk management in such projects and for attracting foreign direct investment into infrastructure in developing countries.
Collapse
Affiliation(s)
- S. Wamuziri
- School of Engineering and the Built Environment, Napier University Edinburgh, UK
| | - M. Jiang
- School of Engineering and the Built Environment, Napier University Edinburgh, UK
| |
Collapse
|
242
|
Kuramochi D, Unoki H, Bujo H, Kubota Y, Jiang M, Rikihisa N, Udagawa A, Yoshimoto S, Ichinose M, Saito Y. Matrix metalloproteinase 2 improves the transplanted adipocyte survival in mice. Eur J Clin Invest 2008; 38:752-9. [PMID: 18837800 DOI: 10.1111/j.1365-2362.2008.02023.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
BACKGROUND Fat tissue is a common material for autologous transplantation in plastic and reconstructive surgery. Basic fibroblast growth factor (bFGF) ameliorates the fat graft survival. A transplantation model has shown the gene expression of matrix metalloproteinases (MMPs) to increase in adipocytes. The aim of this study is to investigate the role of MMPs in the amelioration of survival by bFGF. MATERIALS AND METHODS 3T3-L1 adipocytes were incubated with or without 10 microg mL(-1) bFGF for 8 h in the presence or absence of the MMP inhibitor GM6001, vascular endothelial growth factor (VEGF), MMP-2 or anti-bFGF antibody to study the effect of bFGF on MMP-2 mRNA expression, MMP-2 activity, fat accumulation or 2-deoxyglucose uptake. Collagen sheets containing l x l0(7) adipocytes with or without bFGF in the presence or absence of GM6001 were subcutaneously transplanted into mice, and the appearance, histology, mRNA expression and fat accumulation of the grafts were analysed 4 weeks after transplantation. RESULTS The MMP-2 expression was drastically induced by bFGF among MMPs in 3T3-L1 adipocytes. MMP-2 accelerated fat accumulation, peroxisome proliferator-activated receptor gamma (PPAR gamma) mRNA expression, and glucose uptake to an extent similar to those induced by bFGF, respectively. The bFGF-induced increases were inhibited by the blocking of MMP-2. The transplantation of adipocytes into mice showed that bFGF ameliorates the appearance and fat accumulation, as well as mRNA expression in grafts. These effects were almost or partly inhibited by a MMP blockade. CONCLUSIONS MMP-2 may be involved in the mechanism by which bFGF ameliorates the survival of fat grafts.
Collapse
Affiliation(s)
- D Kuramochi
- Department of Plastic and Reconstructive Surgery, Chiba University Graduate School of Medicine, Chiba, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
243
|
Huhtaniemi I, Pye S, Limer K, Thomson W, O’Neill T, Platt H, Payne D, John S, Jiang M, Perheentupa A, Boonen S, Borghs H, Vanderschueren D, Adams J, Ward K, Bartfai G, Casanueva F, Finn J, Forti G, Giwercman A, Han T, Kula K, Lean M, Pendleton N, Punab M, Silman A, Wu F. Genetic aspects in the gender-specific aging of men. Journal of Men's Health 2008. [DOI: 10.1016/j.jomh.2008.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
|
244
|
Qian X, Jiang M, Shen HO, Zhang B, Durairaj K, Cong WX, Li XD, Henry M, Fajardo L, Wang G. WITHDRAWN: In vivo bioluminescent source estimation using computational optical biopsy. Med Eng Phys 2008; 30:808. [PMID: 17693117 DOI: 10.1016/j.medengphy.2007.06.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2006] [Revised: 05/24/2007] [Accepted: 06/16/2007] [Indexed: 11/16/2022]
Affiliation(s)
- X Qian
- Bioluminescence Tomography Laboratory, Department of Radiology, University of Iowa, Iowa City, IA 52242, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
245
|
|
246
|
Ning H, Yang F, Jiang M, Hu L, Feng K, Zhang J, Yu Z, Li B, Xu C, Li Y, Wang J, Hu J, Lou X, Chen H. The correlation between cotransplantation of mesenchymal stem cells and higher recurrence rate in hematologic malignancy patients: outcome of a pilot clinical study. Leukemia 2008; 22:593-9. [PMID: 18185520 DOI: 10.1038/sj.leu.2405090] [Citation(s) in RCA: 259] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
In this open-label randomized clinical trial, HLA-identical sibling-matched hematopoietic stem cells (HSC) were transplanted (non-MSCs group, n=15) or cotransplanted with mesenchymal stem cells (MSCs) (MSCs group, n=10) in hematologic malignancy patients. The median number of MSCs infused was 3.4 x 10(5) kg(-1) (range, 0.3-15.3 x 10(5) kg(-1)). MSCs infusions were well tolerated. The median time to neutrophil engraftment (absolute neutrophil count >0.5 x 10(9) l(-1)) was 16 days for MSCs group and 15 days for non-MSCs group. The median time to platelet engraftment (platelet count >50 x 10(9) l(-1)) was 30 and 27 days, respectively. Grades II-IV acute graft-versus-host disease (GVHD) was observed respectively, in one (11.1%) and eight (53.3%) evaluable patients. Chronic GVHD was found in one (14.3%) and four (28.6%) evaluable patients. The number of patients who relapsed were six (60.0%) and three (20.0%), and the 3-year disease-free survivals were 30.0 and 66.7%, respectively. Thus cotransplantation of MSCs and HSCs may prevent GVHD, but the relapse rate is obviously higher than the control group. We conclude that use of MSCs must be handled with extreme caution before a large-scale clinical trial is performed.
Collapse
Affiliation(s)
- H Ning
- Department of Hematopoietic Stem Cell Transplantation, Affiliated Hospital to Academy of Military Medical Sciences, Beijing, People's Republic of China
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
247
|
Sun BQ, Mahler M, Jiang M, Li J, Zhong NS. Allergen-specific IgE to inhalant and food allergens and total IgE values in China: comparison of 2 commercial immunoassays. J Investig Allergol Clin Immunol 2008; 18:319-321. [PMID: 18714546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023] Open
Affiliation(s)
- B Q Sun
- Guangzhou Institute of Respiratory Diseases, First Affiliated Hospital of Guangzhou Medical College, Guangzhou, China.
| | | | | | | | | |
Collapse
|
248
|
Shen XZ, Lu Q, Deng L, Yu S, Zhang H, Deng Q, Jiang M, Hu Y, Yao KH, Yang YH. Resistance of Haemophilus influenzae isolates in children under 5 years old with acute respiratory infections in China between 2000 and 2002. J Int Med Res 2007; 35:554-63. [PMID: 17697534 DOI: 10.1177/147323000703500416] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
This prospective, three-centre study tested for antimicrobial susceptibility in 898 isolates of Haemophilus influenzae between 2000 and 2002 in Chinese children aged under 5 years with acute upper respiratory tract infection. The average incidence of beta-lactamase production was 12.0%. Overall, 88.0% of isolates were susceptible to ampicillin, 100.0% were susceptible to amoxicillin/clavulanic acid, ceftriaxone, cefuroxime and azithromycin, and 99.0% were susceptible to ciprofloxacin. Isolates from Beijing and Shanghai had a lower susceptibility to tetracycline (57.0% and 61.0%, respectively) compared with those from Guangzhou (81.0%), while trimethoprim/sulfamethoxazole susceptibilities in Shanghai (47.0%) and Guangzhou (54.0%) were significantly higher than in Beijing (35.0%). A total of 34.5% of all the isolates were susceptible to all eight of these antimicrobial agents and 12.8% were multi-drug resistant. Ampicillin resistance increased over the duration of the study. These findings show that beta-lactamase production and ampicillin resistance among isolates from Chinese children with upper respiratory tract infection are increasing, and highlight the strong correlation between ampicillin resistance and resistance to cefaclor, chloramphenicol and tetracycline in H. influenzae isolates.
Collapse
Affiliation(s)
- X Z Shen
- Beijing Children's Hospital Affiliated to Capital Medical University, Beijing, China
| | | | | | | | | | | | | | | | | | | |
Collapse
|
249
|
Jiang M, Luo Y, Yang S. Stochastic convergence analysis and parameter selection of the standard particle swarm optimization algorithm. INFORM PROCESS LETT 2007. [DOI: 10.1016/j.ipl.2006.10.005] [Citation(s) in RCA: 335] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
250
|
Jiang M, Sullivan SM, Walker AK, Strahler JR, Andrews PC, Maddock JR. Identification of novel Escherichia coli ribosome-associated proteins using isobaric tags and multidimensional protein identification techniques. J Bacteriol 2007; 189:3434-44. [PMID: 17337586 PMCID: PMC1855874 DOI: 10.1128/jb.00090-07] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Biogenesis of the large ribosomal subunit requires the coordinate assembly of two rRNAs and 33 ribosomal proteins. In vivo, additional ribosome assembly factors, such as helicases, GTPases, pseudouridine synthetases, and methyltransferases, are also critical for ribosome assembly. To identify novel ribosome-associated proteins, we used a proteomic approach (isotope tagging for relative and absolute quantitation) that allows for semiquantitation of proteins from complex protein mixtures. Ribosomal subunits were separated by sucrose density centrifugation, and the relevant fractions were pooled and analyzed. The utility and reproducibility of the technique were validated via a double duplex labeling method. Next, we examined proteins from 30S, 50S, and translating ribosomes isolated at both 16 degrees C and 37 degrees C. We show that the use of isobaric tags to quantify proteins from these particles is an excellent predictor of the particles with which the proteins associate. Moreover, in addition to bona fide ribosomal proteins, additional proteins that comigrated with different ribosomal particles were detected, including both known ribosomal assembly factors and unknown proteins. The ribosome association of several of these proteins, as well as others predicted to be associated with ribosomes, was verified by immunoblotting. Curiously, deletion mutants for the majority of these ribosome-associated proteins had little effect on cell growth or on the polyribosome profiles.
Collapse
Affiliation(s)
- M Jiang
- Department of Molecular, Cellular and Developmental Biology, University of Michigan, 830 North University, Ann Arbor, MI 48109-1048, USA
| | | | | | | | | | | |
Collapse
|