1951
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Mital R, Zhang W, Cai M, Huttinger ZM, Goodman LA, Wheeler DG, Ziolo MT, Dwyer KM, d'Apice AJF, Zweier JL, He G, Cowan PJ, Gumina RJ. Antioxidant network expression abrogates oxidative posttranslational modifications in mice. Am J Physiol Heart Circ Physiol 2011; 300:H1960-70. [PMID: 21335461 DOI: 10.1152/ajpheart.01285.2010] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Antioxidant enzymatic pathways form a critical network that detoxifies ROS in response to myocardial stress or injury. Genetic alteration of the expression levels of individual enzymes has yielded mixed results with regard to attenuating in vivo myocardial ischemia-reperfusion injury, an extreme oxidative stress. We hypothesized that overexpression of an antioxidant network (AON) composed of SOD1, SOD3, and glutathione peroxidase (GSHPx)-1 would reduce myocardial ischemia-reperfusion injury by limiting ROS-mediated lipid peroxidation and oxidative posttranslational modification (OPTM) of proteins. Both ex vivo and in vivo myocardial ischemia models were used to evaluate the effect of AON expression. After ischemia-reperfusion injury, infarct size was significantly reduced both ex vivo and in vivo, ROS formation, measured by dihydroethidium staining, was markedly decreased, ROS-mediated lipid peroxidation, measured by malondialdehyde production, was significantly limited, and OPTM of total myocardial proteins, including fatty acid-binding protein and sarco(endo)plasmic reticulum Ca(²+)-ATPase (SERCA)2a, was markedly reduced in AON mice, which overexpress SOD1, SOD3, and GSHPx-1, compared with wild-type mice. These data demonstrate that concomitant SOD1, SOD3, and GSHPX-1 expression confers marked protection against myocardial ischemia-reperfusion injury, reducing ROS, ROS-mediated lipid peroxidation, and OPTM of critical cardiac proteins, including cardiac fatty acid-binding protein and SERCA2a.
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1952
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Zhu FM, Zhang W, Wang W, Lv HJ, Yan LX. Characterization of a novel HLA allele, HLA-B*40:128, in a Chinese individual. TISSUE ANTIGENS 2011; 77:260-1. [PMID: 21299536 DOI: 10.1111/j.1399-0039.2010.01612.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Nucleotide sequence of HLA-B*40:128 has a single nucleotide difference at position 539 T>G compared with that of HLA-B*40:01:01, with an amino acid change from Leu to Arg at codon 156.
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1953
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Zhao LD, Li Y, Smith MF, Wang JS, Zhang W, Tang FL, Tian XP, Wang HY, Zhang FC, Ba DN, He W, Zhang X. Expressions of BAFF/BAFF receptors and their correlation with disease activity in Chinese SLE patients. Lupus 2011; 19:1534-49. [PMID: 20974656 DOI: 10.1177/0961203310375268] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
B-cell activating factor belonging to tumour necrosis factor family (BAFF) is essential for B-cell survival and function through interaction with its receptors BAFF receptor 3 (BR3), B-cell maturation antigen (BCMA) and/or transmembrane activator and calcium modulator and cyclophilin ligand interactor (TACI), though BCMA and/or TACI can also bind to a proliferation-inducing ligand (APRIL). We evaluate the correlation of the expressions of these ligands/receptors with different clinical manifestations of systemic lupus erythematosus (SLE). Levels of BAFF and APRIL in plasma from 73 SLE patients were determined by enzyme-linked immunosorbent assay. Expressions of BR3, TACI and BCMA on CD19+ B cells were detected by flow cytometry. Clinical data were collected and disease activity was evaluated using SLEDAI-2000. SLE patients had elevated BAFF and APRIL levels in their plasma. BAFF levels correlated positively with SLEDAI while negatively with the BR3 protein expression on CD19+ B cells (p < .05). The detected BR3 protein expression in SLE patients was reduced on CD19+IgD+CD27-, CD19+IgD+CD27+ as well as CD19+IgD-CD27+ B cells compared to the counterparts of healthy controls (p < .001), whereas SLE patients did not differ from healthy controls in BR3 mRNA levels. In untreated new-onset patients, the expression rate of BR3 on CD19+ B cells correlated negatively with SLEDAI (p < .05). Elevation of BAFF and reduction of BR3 on CD19+ B cells were more obvious in those with lupus nephritis (LN, p < .05). TACI expression on CD19+ B cells was up-regulated only in those subjects with LN (p < .05). Elevated plasma BAFF and reduced BR3 protein expression on peripheral B cells could act as biomarkers for active disease in SLE patients. High expression of TACI may indicate the occurrence of LN.
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1954
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Zhang W, Wu K, He W, Gao Y, Huang W, Lin X, Cai L, Fang Z, Zhou Q, Luo Z, Chen ZK, Zhou H. Transforming growth factor beta 1 plays an important role in inducing CD4(+)CD25(+)forhead box P3(+) regulatory T cells by mast cells. Clin Exp Immunol 2011; 161:490-6. [PMID: 20550544 DOI: 10.1111/j.1365-2249.2010.04190.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
The role of mast cells (MCs) in the generation of adaptive immune responses especially in the transplant immune responses is far from being resolved. It is reported that mast cells are essential intermediaries in regulatory T cell (T(reg)) transplant tolerance, but the mechanism has not been clarified. To investigate whether bone marrow-derived mast cells (BMMCs) can induce T(regs) by expressing transforming growth factor beta 1 (TGF-β1) in vitro, bone marrow cells obtained from C57BL/6 (H-2(b) ) mice were cultured with interleukin (IL)-3 (10 ng/ml) and stem cell factor (SCF) (10 ng/ml) for 4 weeks. The purity of BMMCs was measured by flow cytometry. The BMMCs were then co-cultured with C57BL/6 T cells at ratios of 1:2, 1:1 and 2:1. Anti-CD3, anti-CD28 and IL-2 were administered into the co-culture system with (experiment groups) or without (control groups) TGF-β1 neutralizing antibody. The percentages of CD4(+)CD25(+)forkhead box P3 (FoxP3)(+) T(regs) in the co-cultured system were analysed by flow cytometry on day 5. The T(reg) percentages were significantly higher in all the experiment groups compared to the control groups. These changes were deduced by applying TGF-β1 neutralizing antibody into the co-culture system. Our results indicated that the CD4(+) T cells can be induced into CD4(+)CD25(+)FoxP3(+) T cells by BMMCs via TGF-β1.
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1955
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Pishvaian M, Sakaeva D, Hsieh RK, Rha SY, Caderillo-Ruiz G, Miller WH, Kemner AM, Nagarwala YM, Zhang W, Lenz H. A global, multicenter phase II trial of lapatinib plus capecitabine in gastric cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.4_suppl.88] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
88 Background: Advanced gastric cancer (GC) is an incurable disease. HER2 overexpression has been reportedin 6%–35% of gastric and gastroesophageal tumors, whereas the EGFR is upregulated in about 18%–28%. Clinical studies confirm that targeting HER2 in combination with chemotherapy is an effective strategy, achieving a median survival of ∼13.5 mos. Lapatinib, a dual tyrosine kinase inhibitor of HER2 and the EGFR, inhibits tumor growth and modulates expression of fluoropyrimidine-targeting genes. LPT109747 is an international, multicenter phase II study investigating the combination of lapatinib + capecitabine in patients with advanced gastric or gastroesophageal junction adenocarcinoma. Methods: Primary endpoints of the study included clinical response rate, 5 mo PFS and mRNA and protein expression levels of genes involved in the 5-FU and HER2 pathway. HER2 overexpression was not required at study entry. Oral lapatinib was administered (1,250 mg/d, continuously) during a monotherapy run-in period (day -7 to 0) and in combination with oral capecitabine (1,000 mg/m2 BID, 14 of 21 days). Patients were treated until disease progression (PD) or study withdrawal. Biopsies were performed on days -7 and 0. Safety was assessed every 3 weeks and response every 6 weeks by RECIST. Results: Sixty-seven patients were included in the current analysis: 25% female, 75% male; 51% Caucasian, 45% Asian; median age 60 y (range: 22-89 y); 75% GC, 25% GEJ. All 67 patients were evaluable for response. The overall response rate was 22.4% (16.4% confirmed). 45% of patients had stable disease, and 24% had PD. No complete responses were observed. PD or death at < 5 mo was 63%. At the time of data cut off, PFS at 5 mo was 28.4% (17.3%–40.5%); median follow up was 26.4 weeks (CI: 22.1; 55.9); 39% of patients remain in follow up. Most frequent grade 3/4 events were anemia (13%), hand-foot syndrome (12%), decreased appetite (10%), and nausea (9%). Conclusions: The combination of lapatinib + capecitabine shows promising efficacy and is well tolerated as 1st line treatment for advanced GC. An analysis of biomarker data may help identify who may benefit most from this regimen. [Table: see text]
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1956
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Dubcovsky J, Ordon F, Perovic D, Admassu B, Friedt W, Abate Z, Zhang W, Chao S. Conflicting mapping results for stem rust resistance gene Sr13. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2011; 122:659. [PMID: 21153628 PMCID: PMC3026676 DOI: 10.1007/s00122-010-1495-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
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1957
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Zhang W, Labonte MJ, Yang D, Ning Y, Gerger A, Bohanes PO, Winder T, El-Khoueiry AB, Iqbal S, Lenz H. Use of genetic variants in formyl peptide receptor 2 (FPR2) to predict tumor recurrence in stage II colon cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.4_suppl.408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
408 Background: The formyl peptide receptor (FPR) is a G-protein-coupled receptor (GPCR) that mediates chemotaxis of phagocytic leucocytes induced by bacterial and host-derived chemotactic peptides. Recent studies found that it is selectively expressed in highly malignant gliomas and contributes to tumor growth and angiogenesis by mediating tumor cell chemotaxis, proliferation and production of chemokines and VEGF. Previously we demonstrated that polymorphisms in the VEGF pathway predict tumor recurrence in adjuvant colon cancer. Here we tested the hypothesis that two genetic variants in the FPR2 gene (rs17834679 and rs17694990) may predict tumor recurrence in a cohort of adjuvant colon cancer patients. Methods: Between 1992 and 2007, blood samples were obtained from 234 adjuvant colon caner patients (109 with stage II and 125 with stage III) at the USC medical facilities. Genomic DNA was extracted from peripheral blood and two potentially functional genotypes (rs17834679 and rs17694990) within the FPR2 gene were determined utilizing the PCR-RFLP technique. The median follow-up was 4.4 years (range: 0.3- 16.8). Ninety of 234 patients (38.5%) developed tumor recurrence with a 3-year probability of 0.34 ± 0.05. Results: In multivariable Cox proportional hazards regression analysis, FPR2 polymorphism rs17834679 was significantly associated with time to tumor recurrence (TTR) in stage II colon cancer (adjusted P = 0.027). Patients with CC genotype were at greatest risk of developing tumor recurrence (adjusted hazard ratio [HR]: 2.819 [95%CI: 1.127-7.051]) compared to those with GC and GG genotypes. In the dominant inheritance model, patients with any G allele had longer TTR (16.8 years+, median was not reached) compared to those with CC genotype (median TTR 5.4 years [95%CI: 3.2-10.7]; p=0.007, log-rank test). There are no significantly associations between FPR2 polymorphisms and TTR in stage III colon cancer. Conclusions: Polymorphisms in the FPR2 gene may serve as molecular markers for tumor recurrence in stage II colon cancer, indicating that the analysis of genetic variants of FPR2 may help to identify patient subgroups at high risk for tumor recurrence. No significant financial relationships to disclose.
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1958
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Huang C, Gu H, Wang Y, Zhang W, Shou W, Wang M. Ablation Of Cardiac Stat3 Gene Or Inhibition Myocardial Stat3 Signaling Neutralizes SDF-1-improved Cardiac Function Following Acute Ischemia. J Surg Res 2011. [DOI: 10.1016/j.jss.2010.11.447] [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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1959
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Zhang W, Labonte MJ, Lenz HJ. KRAS let-7 LCS6 SNP predicts cetuximab efficacy in KRASwt metastatic colorectal cancer patients: Does treatment combination partner matter? Ann Oncol 2011; 22:484-5. [PMID: 21278223 DOI: 10.1093/annonc/mdq704] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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1960
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Zhang W, Sun Z, Sun T, Zhang H. PCR screening and sequence analysis of iol clusters in Lactobacillus casei strains isolated from koumiss. Folia Microbiol (Praha) 2011; 55:603-6. [PMID: 21253906 DOI: 10.1007/s12223-010-0097-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2010] [Revised: 10/27/2010] [Indexed: 11/25/2022]
Abstract
The iol cluster (consisting of genes involved in myo-inositol utilization) was investigated in Lactobacillus casei strains isolated from koumiss. Ten strains were tested for the presence of iol cluster by PCR screening; three strains encoded this cluster. Full-sequencing procedure was conducted; the iol cluster was identical to that of L. casei BL23 (GenBank access. no. FM177140) except for an upstream transposase. The iol cluster is not a common feature for L. casei strains isolated from koumiss.
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1961
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Zhang W, Doherty M, Pascual E, Barskova V, Guerne PA, Jansen TL, Leeb BF, Perez-Ruiz F, Pimentao J, Punzi L, Richette P, Sivera F, Uhlig T, Watt I, Bardin T. EULAR recommendations for calcium pyrophosphate deposition. Part II: Management. Ann Rheum Dis 2011; 70:571-5. [DOI: 10.1136/ard.2010.139360] [Citation(s) in RCA: 149] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
ObjectivesTo develop evidence-based recommendations for management of calcium pyrophosphate deposition (CPPD).MethodsA multidisciplinary guideline development group of 15 experts, representing 10 European countries, generated key propositions for management of CPPD using a Delphi consensus approach. For each recommendation research evidence was searched systematically. Whenever possible, the effect size and number needed to treat for efficacy and RR or OR for side effects were calculated for individual treatment modalities. Strength of recommendation was assessed by the European League Against Rheumatism visual analogue scale.ResultsNine key recommendations were generated, including topics for general management, treatment of acute attacks, prophylaxis against recurrent acute attacks and management of chronic symptoms. It was recommended that optimal treatment requires both non-pharmacological and pharmacological treatments. For acute CPP crystal arthritis, cool packs, temporary rest and joint aspiration combined with steroid injection are often sufficient. For prophylaxis or chronic inflammatory arthritis with CPPD, oral non-steroidal anti-inflammatory drugs with gastroprotective treatment and/or low-dose colchicine 0.5–1.0 mg daily may be used. Other recommendations included parenteral or oral corticosteroid for acute CPP arthritis in those unresponsive or unsuited to other measures, and low-dose corticosteroid, methotrexate or hydroxychloroquine for chronic inflammatory arthritis with CPPD. Asymptomatic CPPD requires no treatment. Strength of recommendations varies from 79% to 95%.ConclusionNine key recommendations for management of CPP crystal associated arthritis were developed using both research evidence and expert consensus. Strength of recommendations was provided to assist the application of these recommendations.
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1962
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Yu B, Shao Y, Li P, Zhang J, Zhong Q, Yang H, Hu X, Chen B, Peng X, Wu Q, Chen Y, Guan M, Wan J, Zhang W. Copy number variations of the human histamine H4 receptor gene are associated with systemic lupus erythematosus. Br J Dermatol 2011; 163:935-40. [PMID: 20618322 DOI: 10.1111/j.1365-2133.2010.09928.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Systemic lupus erythematosus (SLE) is a complex genetic disease; the histamine H4 receptor (HRH4) has been shown to be related to different kinds of autoimmune disorders; and copy number variations (CNVs) have been found to be associated with various types of diseases. OBJECTIVES To explore a possible association between HRH4 (formerly H4R) CNVs and the risk of SLE. METHODS Genomic DNA and RNA from 340 patients with SLE and 392 healthy controls were extracted, and CNVs and mRNA levels of HRH4 were examined. RESULTS The expression of HRH4 mRNA was significantly increased in patients with SLE compared with controls. Amplification of HRH4 copy numbers significantly increased the risk of SLE [P < 0·001, odds ratio (OR) 2·26, 95% confidence interval (CI) 1·50-3·40]. HRH4 amplifications also positively correlated with the incidence of arthritis (P = 0·019, OR 1·96, 95% CI 1·11-3·47), and proteinuria (P < 0·001, OR 2·95, 95% CI 1·73-5·00) and antinuclear antibody abnormalities (P < 0·001, OR 2·97, 95% CI 1·66-5·33). Deletions of HRH4 copy numbers were protective against proteinuria (P = 0·03, OR 0·50, 95% CI 0·26-0·94). CONCLUSION CNVs of the HRH4 gene are associated with SLE.
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1963
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Zhang W, Doherty M, Bardin T, Barskova V, Guerne PA, Jansen TL, Leeb BF, Perez-Ruiz F, Pimentao J, Punzi L, Richette P, Sivera F, Uhlig T, Watt I, Pascual E. European League Against Rheumatism recommendations for calcium pyrophosphate deposition. Part I: terminology and diagnosis. Ann Rheum Dis 2011; 70:563-70. [PMID: 21216817 DOI: 10.1136/ard.2010.139105] [Citation(s) in RCA: 285] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBJECTIVES To agree terminology and to develop recommendations for the diagnosis of calcium pyrophosphate deposition (CPPD). METHODS The European League Against Rheumatism (EULAR) CPPD Task Force, comprising 15 experts from 10 countries, agreed the terms and recommendations for diagnosis of CPPD using a Delphi consensus approach. Evidence was systematically reviewed and presented in terms of sensitivity, specificity and positive likelihood ratio (LR) to support diagnosis; ORs were used for association. Strength of recommendation (SOR) was assessed by the EULAR visual analogue scale. RESULTS It was agreed that 'CPPD' should be the umbrella term that includes acute calcium pyrophosphate (CPP) crystal arthritis, osteoarthritis (OA) with CPPD and chronic CPP crystal inflammatory arthritis. Chondrocalcinosis (CC) defines cartilage calcification, most commonly due to CPPD and detected by imaging or histological examination. A total of 11 key recommendations were generated on the topics of clinical features, synovial fluid (SF) examination, imaging, comorbidities and risk factors. Definitive diagnosis of CPPD relies on identification of SF CPP crystals. Rapid onset inflammatory symptoms and signs are suggestive but not definitive for acute CPP crystal arthritis. Radiographic CC is not highly sensitive or specific, whereas ultrasonography appears more useful (LR=24.2, 95% CI 3.51 to 168.01) for peripheral joints. Recognised risk factors for CPPD include ageing, OA and metabolic conditions such as primary hyperparathyroidism, haemochromatosis and hypomagnesaemia; familial forms are rare. SORs varied from 53 to 99 (maximum 100). CONCLUSION New terms for CPPD were agreed and 11 key recommendations for diagnosis of CPPD were developed using research evidence and expert consensus.
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1964
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Qian AR, Wang L, Gao X, Zhang W, Hu LF, Han J, Li JB, Di SM, Shang P. Diamagnetic levitation causes changes in the morphology, cytoskeleton, and focal adhesion proteins expression in osteocytes. IEEE Trans Biomed Eng 2011; 59:68-77. [PMID: 21216704 DOI: 10.1109/tbme.2010.2103377] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Diamagnetic levitation technology is a novel simulated weightless technique and has recently been applied in life-science research. We have developed a superconducting magnet platform with large gradient high magnetic field (LG-HMF), which can provide three apparent gravity levels, namely, μg (diamagnetic levitation), 1g, and 2g for diamagnetic materials. In this study, the effects of LG-HMF on the activity, morphology, and cytoskeleton (actin filament, microtubules, and vimentin intermediate filaments) in osteocyte - like cell line MLO-Y4 were detected by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) methods, hematoxylin-eosin (HE) staining, and laser scanning confocal microscopy (LSCM), respectively. The changes induced by LG-HMF in distribution and expression of focal adhesion (FA) proteins, including vinculin, paxillin, and talin in MLO-Y4 were determined by LSCM and Western blotting. The results showed that LG-HMF produced by superconducting magnet had no lethal effects on MLO-Y4. Compared to control, diamagnetic levitation (μg) affected MLO-Y4 morphology, nucleus size, cytoskeleton architecture, and FA proteins distribution and expression. The study indicates that osteocytes are sensitive to altered gravity and FA proteins (vinculin, paxillin, and talin) may be involved in osteocyte mechanosensation. The diamagnetic levitation may be a novel ground-based space-gravity simulator and can be used for biological experiment at cellular level.
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1965
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Zhang JL, Zhang SJ, Weng HM, Zhang W, Yang LX, Liu QQ, Feng SM, Wang XC, Yu RC, Cao LZ, Wang L, Yang WG, Liu HZ, Zhao WY, Zhang SC, Dai X, Fang Z, Jin CQ. Pressure-induced superconductivity in topological parent compound Bi2Te3. Proc Natl Acad Sci U S A 2011; 108:24-8. [PMID: 21173267 PMCID: PMC3017179 DOI: 10.1073/pnas.1019040108] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2024] Open
Abstract
We report a successful observation of pressure-induced superconductivity in a topological compound Bi(2)Te(3) with T(c) of ∼3 K between 3 to 6 GPa. The combined high-pressure structure investigations with synchrotron radiation indicated that the superconductivity occurred at the ambient phase without crystal structure phase transition. The Hall effects measurements indicated the hole-type carrier in the pressure-induced superconducting Bi(2)Te(3) single crystal. Consequently, the first-principles calculations based on the structural data obtained by the Rietveld refinement of X-ray diffraction patterns at high pressure showed that the electronic structure under pressure remained topologically nontrivial. The results suggested that topological superconductivity can be realized in Bi(2)Te(3) due to the proximity effect between superconducting bulk states and Dirac-type surface states. We also discuss the possibility that the bulk state could be a topological superconductor.
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1966
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Zhang W, Yuan JJ, Kan QC, Zhang LR, Chang YZ, Wang ZY. Study of the OPRM1 A118G genetic polymorphism associated with postoperative nausea and vomiting induced by fentanyl intravenous analgesia. Minerva Anestesiol 2011; 77:33-39. [PMID: 21150856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
BACKGROUND Genetic polymorphisms of the μ-opioid receptor gene OPRM1 A118G have been shown to influence opioid efficacy. The association of the OPRM1 A118G genetic polymorphism with side effects, such as nausea and vomiting, caused by opioids during analgesia has not been well-represented by the literature . This study aimed to investigate whether the genetic polymorphism of OPRM1 A118G contributed to the variability in nausea and vomiting during fentanyl analgesia in patients undergoing total abdominal hysterectomy or myomectomy. METHODS One hundred sixty-five women, of Han nationality, aged 20-50 yrs, of ASA I or II, and scheduled for elective total abdominal hysterectomy or myomectomy under general anesthesia were enrolled. Intravenous fentanyl, patient-controlled analgesia was provided postoperatively for pain control. The presence and scores of postoperative nausea and vomiting for 24 hours were recorded and measured using rating scales. Pain was measured with a visual analog scale, and fentanyl consumption over 24 hours was recorded, as well. Genotyping of the A118G allele was conducted by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP), and patients were divided into three groups according to their genotype. RESULTS The frequency of the A118G allele was 32.4% for the patients in this study. Patients homozygous for 118G required more fentanyl to achieve adequate pain relief compared with the other two patient groups (patients homozygous for 118A and heterozygous). However, there were no statistically significant differences among the frequencies and scores of nausea and vomiting. CONCLUSION OPRM1 A118G has no effect on the individual variation of postoperative nausea and vomiting, the side effects of fentanyl analgesia, in Chinese women undergoing gynecologic surgery.
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1967
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Kasichayanula S, Liu X, Shyu WC, Zhang W, Pfister M, Griffen SC, Li T, LaCreta FP, Boulton DW. Lack of pharmacokinetic interaction between dapagliflozin, a novel sodium-glucose transporter 2 inhibitor, and metformin, pioglitazone, glimepiride or sitagliptin in healthy subjects. Diabetes Obes Metab 2011; 13:47-54. [PMID: 21114603 DOI: 10.1111/j.1463-1326.2010.01314.x] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
AIMS Dapagliflozin increases urinary glucose excretion by selectively inhibiting renal sodium-glucose transporter 2, an insulin-independent mechanism of action that may be complementary to that of other oral antidiabetes drugs. The current studies assessed the potential for pharmacokinetic (PK) interaction between dapagliflozin and pioglitazone, metformin, glimepiride or sitagliptin in healthy subjects following single-dose administration. METHODS In open-label, randomized, three-period, three-treatment crossover studies, 24 subjects received 50 mg dapagliflozin, 45 mg pioglitazone or the combination, while 18 subjects received 20 mg dapagliflozin, 1000 mg metformin or the combination. In an open-label, randomized, five-period, five-treatment, unbalanced crossover study, 18 subjects first received 20 mg dapagliflozin, 4 mg glimepiride or the combination, and afterward 100 mg sitagliptin or sitagliptin plus 20 mg dapagliflozin. Blood samples were taken over 72 h of each treatment period. Lack of PK interaction was defined as the ratio of geometric means and 90% confidence interval (CI) for combination:monotherapy being within the range of 0.80-1.25. RESULTS Co-administration of dapagliflozin with pioglitazone, metformin, glimepiride or sitagliptin had no effect on dapagliflozin maximum plasma concentration (C(max) ) or area under the plasma concentration-time curve (AUC). Similarly, dapagliflozin did not affect the C(max) or AUC for the co-administered drug, except for slight extensions of the 90% CI for the ratio of geometric means for glimepiride AUC (upper limit 1.29) and pioglitazone C(max) (lower limit 0.75). All monotherapies and combination therapies were well tolerated. CONCLUSION Dapagliflozin can be co-administered with pioglitazone, metformin, glimepiride or sitagliptin without dose adjustment of either drug.
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1968
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Zhou J, Zhu X, Zhang W, Qin F, Zhang S, Jia Z. Short Communication A novel single-nucleotide polymorphism in the 5' upstream region of the prolactin receptor gene is associated with fiber traits in Liaoning cashmere goats. GENETICS AND MOLECULAR RESEARCH 2011; 10:2511-6. [DOI: 10.4238/2011.october.13.8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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1969
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Tian Y, Yuan Z, Liu Y, Liu W, Zhang W, Xue J, Shen Y, Liang X, Chen T, Kishimoto C. Pioglitazone modulates the balance of effector and regulatory T cells in apolipoprotein E deficient mice. Nutr Metab Cardiovasc Dis 2011; 21:25-32. [PMID: 19819680 DOI: 10.1016/j.numecd.2009.07.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2009] [Revised: 06/29/2009] [Accepted: 07/22/2009] [Indexed: 11/18/2022]
Abstract
BACKGROUND AND AIMS Pioglitazone (PIO) affects T cell-mediated immunity through actions of peroxisome proliferator activated receptor γ (PPARγ). Effector and regulatory T cells control the development of atherosclerosis, a chronic inflammatory disease affecting the arterial blood vessels. The aim of this study was to examine whether PIO ameliorates atherosclerosis by altering the balance of effector and regulatory T cells. METHODS AND RESULTS To explore the effect of PIO on early and advanced atherosclerosis, apolipoprotein E deficient (ApoE-/-) mice were fed western diet and received PIO (20 mg/kg/day) by gastric gavage at 6 or 14 weeks of age, respectively for 8 weeks. Data showed PIO markedly inhibited early fatty streak formation. Further, although the advanced fibrofatty plaque sizes were not significantly reduced, the numbers of smooth muscle cells within lesions were increased and higher collagen concentrations were produced. In general, macrophage expression in lesions was decreased. Additionally, the expression of Foxp3(+) cells was increased in lesions and spleens in mice at all PIO treatment stages, whereas the CD4(+)IFN-γ(+)/CD4(+)IL-4(+) cell ratios were reduced. CONCLUSION PIO inhibited early atherosclerotic lesion formation and increased the stability of advanced atherosclerotic plaques in ApoE-/- mice, which was associated with altering the balance of effector and regulatory T cells.
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1970
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Wang H, Yang R, Hua X, Zhang Z, Zhao W, Zhang W. Expression, Enzymatic Characterization, and High-Level Production of Glucose Isomerase from Actinoplanes missouriensis CICIM B0118(A) in Escherichia coli. Z NATURFORSCH C 2011. [DOI: 10.5560/znc.2011.66c0605] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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1971
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Mayhew KE, McCoy TM, Jones DL, Barnard KR, Cheng CY, Zhang W, Robinson DJ. Kinetic Separation of Co from Ni, Mg, Mn, and Ca via Synergistic Solvent Extraction. SOLVENT EXTRACTION AND ION EXCHANGE 2011. [DOI: 10.1080/07366299.2011.595628] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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1972
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Holliday KL, McWilliams DF, Maciewicz RA, Muir KR, Zhang W, Doherty M. Lifetime body mass index, other anthropometric measures of obesity and risk of knee or hip osteoarthritis in the GOAL case-control study. Osteoarthritis Cartilage 2011; 19:37-43. [PMID: 21044695 DOI: 10.1016/j.joca.2010.10.014] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2010] [Revised: 08/12/2010] [Accepted: 10/17/2010] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To examine the risk of large joint osteoarthritis (OA) in those becoming overweight during early adult life, and to assess the risks associated with high body mass index (BMI) and other anthropometric measures of obesity. METHODS BMI, waist and hip circumference were measured in the GOAL case-control study comprising hip OA cases (n=1007), knee OA cases (n=1042) and asymptomatic controls (n=1121). Retrospective estimates of lifetime weight, body shape and other risk factors were collected using an interview-lead questionnaire. Odds ratios (ORs), adjusted OR (aOR), 95% confidence intervals (CIs) and P values were calculated using logistic regression analysis. RESULTS BMI was associated with knee OA (aOR 2.68, 95% CI 2.33-3.09, P-trend<0.001) and hip OA (aOR 1.65, 95% CI 1.46-1.87, P-trend<0.001). Those who became overweight earlier in adulthood showed higher risks of lower limb OA (P-trend<0.001 for knee OA and hip OA). Self-reported body shape was also associated with knee OA and hip OA, following a similar pattern to current and life-course BMI measures. Waist:hip ratio (WHR) at time of examination did not associate with OA independently of BMI, except in women-only analysis. Waist circumference was associated with lower limb OA risk. CONCLUSIONS Becoming overweight earlier in adult life increased the risks of knee OA and hip OA. Different distribution patterns of adiposity may be related to OA risk in women.
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1973
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Zhang W, Aghdassi E, Reich HN, Su J, Lou W, Landolt-Marticorena C, Gladman DD, Urowitz MB, Scholey J, Fortin PR. Glomerular filtration rate predicts arterial events in women with systemic lupus erythematosus. Rheumatology (Oxford) 2010; 50:799-805. [DOI: 10.1093/rheumatology/keq383] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
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1974
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Martínez-Mier EA, Cury JA, Heilman JR, Katz BP, Levy SM, Li Y, Maguire A, Margineda J, O'Mullane D, Phantumvanit P, Soto-Rojas AE, Stookey GK, Villa A, Wefel JS, Whelton H, Whitford GM, Zero DT, Zhang W, Zohouri V. Development of gold standard ion-selective electrode-based methods for fluoride analysis. Caries Res 2010; 45:3-12. [PMID: 21160184 PMCID: PMC3696354 DOI: 10.1159/000321657] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2008] [Accepted: 10/04/2010] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS Currently available techniques for fluoride analysis are not standardized. Therefore, this study was designed to develop standardized methods for analyzing fluoride in biological and nonbiological samples used for dental research. METHODS A group of nine laboratories analyzed a set of standardized samples for fluoride concentration using their own methods. The group then reviewed existing analytical techniques for fluoride analysis, identified inconsistencies in the use of these techniques and conducted testing to resolve differences. Based on the results of the testing undertaken to define the best approaches for the analysis, the group developed recommendations for direct and microdiffusion methods using the fluoride ion-selective electrode. RESULTS Initial results demonstrated that there was no consensus regarding the choice of analytical techniques for different types of samples. Although for several types of samples, the results of the fluoride analyses were similar among some laboratories, greater differences were observed for saliva, food and beverage samples. In spite of these initial differences, precise and true values of fluoride concentration, as well as smaller differences between laboratories, were obtained once the standardized methodologies were used. Intraclass correlation coefficients ranged from 0.90 to 0.93, for the analysis of a certified reference material, using the standardized methodologies. CONCLUSION The results of this study demonstrate that the development and use of standardized protocols for F analysis significantly decreased differences among laboratories and resulted in more precise and true values.
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1975
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Zhang W, Lin M, Winesett A, Dhez O, Kilcoyne ALD, Ade H, Rubinstein M, Shafi KVPM, Ulman A, Gersappe D, Tenne R, Rafailovich M, Sokolov J, Frisch HL. The use of functionalized nanoparticles as non-specific compatibilizers for polymer blends. POLYM ADVAN TECHNOL 2010. [DOI: 10.1002/pat.1875] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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