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Qi N, Yan J, Lei P, Kang W, Liu X, Xuan Y, Fan H, Wang Y, Yang N, Chen L, Duan Y, Zhu X. Transcriptome Analysis of GmPUB20A Overexpressing and RNA-Interferencing Transgenic Hairy Roots Reveals Underlying Negative Role in Soybean Resistance to Cyst Nematode. J Agric Food Chem 2023; 71:18059-18073. [PMID: 37948664 DOI: 10.1021/acs.jafc.3c05617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
Ubiquitination genes are key components of plant responses to biotic stress. GmPUB20A, a ubiquitination gene, plays a negative role in soybean resistance to soybean cyst nematode (SCN). In this study, we employed high-throughput sequencing to investigate transcriptional changes in GmPUB20A overexpressing and RNA-interfering transgenic hairy roots. Totally, 7661 differentially expressed genes (DEGs) were identified. Gene Ontology (GO) enrichment and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses revealed that DEGs were significantly enriched in disease resistance and signal transduction pathways. In addition, silencing Glyma.15G021600 and Glyma.09G284700 by siRNA, the total number of nematodes was decreased by 33.48% and 27.47% than control plants, respectively. Further, GUS activity and reactive oxygen species (ROS) assays revealed that GmPUB20A, Glyma.15G021600, and Glyma.09G284700 respond to SCN parasitism and interfere with the accumulation of ROS in plant roots, respectively. Collectively, our study provides insights into the molecular mechanism of GmPUB20A in soybean resistance to SCN.
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Affiliation(s)
- Nawei Qi
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
- College of Life Science, Shenyang Normal University, Shenyang 110034, China
| | - Jichen Yan
- Institute of Plant Protection, Liaoning Academy of Agriculture Sciences, Shenyang 100161, China
| | - Piao Lei
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
| | - Wenshu Kang
- College of Environment, Shenyang University, Shenyang 110044, China
| | - Xiaoyu Liu
- College of Sciences, Shenyang Agricultural University, Shenyang 110866, China
| | - Yuanhu Xuan
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
| | - Haiyan Fan
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
| | - Yuanyuan Wang
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China
- College of Biological Science and Technology, Shenyang Agricultural University, Shenyang 110866, China
| | - Ning Yang
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
| | - Lijie Chen
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
| | - Yuxi Duan
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
| | - Xiaofeng Zhu
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
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Feng Y, Qi N, Lei P, Wang Y, Xuan Y, Liu X, Fan H, Chen L, Duan Y, Zhu X. Gma-miR408 Enhances Soybean Cyst Nematode Susceptibility by Suppressing Reactive Oxygen Species Accumulation. Int J Mol Sci 2022; 23:ijms232214022. [PMID: 36430501 PMCID: PMC9695887 DOI: 10.3390/ijms232214022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/10/2022] [Accepted: 11/11/2022] [Indexed: 11/16/2022] Open
Abstract
Soybean cyst nematode (SCN, Heterodera glycine) is a serious damaging disease in soybean worldwide, thus resulting in severe yield losses. MicroRNA408 (miR408) is an ancient and highly conserved miRNA involved in regulating plant growth, development, biotic and abiotic stress response. Here, we analyzed the evolution of miR408 in plants and verified four miR408 members in Glycine max. In the current research, highly upregulated gma-miR408 expressing was detected during nematode migration and syncytium formation response to soybean cyst nematode infection. Overexpressing and silencing miR408 vectors were transformed to soybean to confirm its potential role in plant and nematode interaction. Significant variations were observed in the MAPK signaling pathway with low OXI1, PR1, and wounding of the overexpressing lines. Overexpressing miR408 could negatively regulate soybean resistance to SCN by suppressing reactive oxygen species accumulation. Conversely, silencing miR408 positively regulates soybean resistance to SCN. Overall, gma-miR408 enhances soybean cyst nematode susceptibility by suppressing reactive oxygen species accumulation.
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Affiliation(s)
- Yaxing Feng
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
| | - Nawei Qi
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
| | - Piao Lei
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
| | - Yuanyuan Wang
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China
- College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang 110866, China
| | - Yuanhu Xuan
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
| | - Xiaoyu Liu
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China
- College of Science, Shenyang Agricultural University, Shenyang 110866, China
| | - Haiyan Fan
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
| | - Lijie Chen
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
| | - Yuxi Duan
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
| | - Xiaofeng Zhu
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
- Correspondence:
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Lei P, Qi N, Yan J, Zhu X, Liu X, Xuan Y, Fan H, Chen L, Duan Y, Wang Y. Genome-wide identification of small interfering RNAs from sRNA libraries constructed from soybean cyst nematode resistant and susceptible cultivars. Gene 2022; 832:146557. [PMID: 35568338 DOI: 10.1016/j.gene.2022.146557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 04/22/2022] [Accepted: 05/06/2022] [Indexed: 11/26/2022]
Abstract
Plant small-RNAs regulate various biological processes by manipulating the expression of target genes at the transcriptional and post-transcriptional levels. However, little is known about the response and the functional roles of sRNAs, particularly small-interfering RNAs (siRNAs), in the soybean-soybean cyst nematode interaction. In this study, siRNA data from 24 sRNA libraries constructed from SCN-infected and non-SCN-infected resistant and susceptible soybean roots were analysed in silico. A total of 26 novel siRNAs including 17 phasiRNAs and 9 nat-siRNAs, as well as two phasiRNAs that were differentially expressed (DE) in three comparisons, were identified. Then, using qRT-PCR, the expression of majority of siRNAs was found to be downregulated after SCN infection, and the expression patterns of DE siRNAs were confirmed. Further functional annotation analyses revealed that the target genes of these siRNA were highly related to disease resistance, which included the genes coding for the NB-ARC domain, leucine-rich repeats, and Hs1pro-1 homologous proteins. Overall, the present research identified novel siRNAs and annotated their target genes, thereby laying the foundation for deciphering the roles of siRNAs in the soybean-SCN interaction.
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Affiliation(s)
- Piao Lei
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China; College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China.
| | - Nawei Qi
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China; College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China.
| | - Jichen Yan
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China; College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China.
| | - Xiaofeng Zhu
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China; College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China.
| | - Xiaoyu Liu
- College of Sciences, Shenyang Agricultural University, Shenyang 110866, China.
| | - Yuanhu Xuan
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China.
| | - Haiyan Fan
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China; College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China.
| | - Lijie Chen
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China; College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China.
| | - Yuxi Duan
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China; College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China.
| | - Yuanyuan Wang
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China; College of Biological Science and Technology, Shenyang Agricultural University, Shenyang 110866, China.
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4
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Lei P, Qi N, Zhou Y, Wang Y, Zhu X, Xuan Y, Liu X, Fan H, Chen L, Duan Y. Soybean miR159 -GmMYB33 Regulatory Network Involved in Gibberellin-Modulated Resistance to Heterodera glycines. Int J Mol Sci 2021; 22:13172. [PMID: 34884977 PMCID: PMC8658632 DOI: 10.3390/ijms222313172] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 11/29/2021] [Accepted: 11/29/2021] [Indexed: 11/16/2022] Open
Abstract
Soybean cyst nematode (SCN, Heterodera glycines) is an obligate sedentary biotroph that poses major threats to soybean production globally. Recently, multiple miRNAome studies revealed that miRNAs participate in complicated soybean-SCN interactions by regulating their target genes. However, the functional roles of miRNA and target genes regulatory network are still poorly understood. In present study, we firstly investigated the expression patterns of miR159 and targeted GmMYB33 genes. The results showed miR159-3p downregulation during SCN infection; conversely, GmMYB33 genes upregulated. Furthermore, miR159 overexpressing and silencing soybean hairy roots exhibited strong resistance and susceptibility to H. glycines, respectively. In particular, miR159-GAMYB genes are reported to be involve in GA signaling and metabolism. Therefore, we then investigated the effects of GA application on the expression of miR159-GAMYB module and the development of H. glycines. We found that GA directly controls the miR159-GAMYB module, and exogenous GA application enhanced endogenous biologically active GA1 and GA3, the abundance of miR159, lowered the expression of GmMYB33 genes and delayed the development of H. glycines. Moreover, SCN infection also results in endogenous GA content decreased in soybean roots. In summary, the soybean miR159-GmMYB33 module was directly involved in the GA-modulated soybean resistance to H. glycines.
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Affiliation(s)
- Piao Lei
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China; (P.L.); (N.Q.); (Y.Z.); (Y.W.); (X.Z.); (Y.X.); (X.L.); (H.F.); (L.C.)
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
| | - Nawei Qi
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China; (P.L.); (N.Q.); (Y.Z.); (Y.W.); (X.Z.); (Y.X.); (X.L.); (H.F.); (L.C.)
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
| | - Yuan Zhou
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China; (P.L.); (N.Q.); (Y.Z.); (Y.W.); (X.Z.); (Y.X.); (X.L.); (H.F.); (L.C.)
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
| | - Yuanyuan Wang
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China; (P.L.); (N.Q.); (Y.Z.); (Y.W.); (X.Z.); (Y.X.); (X.L.); (H.F.); (L.C.)
- College of Biological Science and Technology, Shenyang Agricultural University, Shenyang 110866, China
| | - Xiaofeng Zhu
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China; (P.L.); (N.Q.); (Y.Z.); (Y.W.); (X.Z.); (Y.X.); (X.L.); (H.F.); (L.C.)
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
| | - Yuanhu Xuan
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China; (P.L.); (N.Q.); (Y.Z.); (Y.W.); (X.Z.); (Y.X.); (X.L.); (H.F.); (L.C.)
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
| | - Xiaoyu Liu
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China; (P.L.); (N.Q.); (Y.Z.); (Y.W.); (X.Z.); (Y.X.); (X.L.); (H.F.); (L.C.)
- College of Sciences, Shenyang Agricultural University, Shenyang 110866, China
| | - Haiyan Fan
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China; (P.L.); (N.Q.); (Y.Z.); (Y.W.); (X.Z.); (Y.X.); (X.L.); (H.F.); (L.C.)
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
| | - Lijie Chen
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China; (P.L.); (N.Q.); (Y.Z.); (Y.W.); (X.Z.); (Y.X.); (X.L.); (H.F.); (L.C.)
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
| | - Yuxi Duan
- Nematology Institute of Northern China, Shenyang Agricultural University, Shenyang 110866, China; (P.L.); (N.Q.); (Y.Z.); (Y.W.); (X.Z.); (Y.X.); (X.L.); (H.F.); (L.C.)
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
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5
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Zhu H, Zhou R, Qi N, Zhao F, Li Z, Wang S, Wang J, Chen R, Wen R. Efficacy and safety of anlotinib in metastatic renal cell carcinoma: A single-center retrospective study. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)00939-8] [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]
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6
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Liu Y, Meng F, Ye D, Qi N. Camera-aided autocollimation approach for increasing the effective measurement range of a photoelectric collimator. Rev Sci Instrum 2019; 90:096106. [PMID: 31575221 DOI: 10.1063/1.5099997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Accepted: 08/12/2019] [Indexed: 06/10/2023]
Abstract
A camera aided autocollimation (CAAC) system is proposed to enhance the working range of a photoelectric collimator (PEC). This system consists of a camera surrounded by point light sources (LSs), a PEC, a rotary table, and a translation stage. As the tilt angle of the target varies, the intensity of the light from the LSs that is reflected by the target and received by the camera exhibits two symmetric peaks. The camera guides the target into the scope of the PEC by scanning these two peaks. This CAAC approach can automatically collimate a prism with an edge length of 10 mm and an initial tilt angle of 5° at a working range of 1.5 m. The error of the coarse collimation at 99.7% confidence is 602″.
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Affiliation(s)
- Y Liu
- Harbin Institute of Technology, Harbin 150001, China
| | - F Meng
- Dalian Shinergy Science and Technology Development Company Limited, Dalian 116600, China
| | - D Ye
- Harbin Institute of Technology, Harbin 150001, China
| | - N Qi
- Harbin Institute of Technology, Harbin 150001, China
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7
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Song W, Qi N, Liang C, Duan F, Zhao H. Soybean root transcriptome profiling reveals a nonhost resistant response during Heterodera glycines infection. PLoS One 2019; 14:e0217130. [PMID: 31125369 PMCID: PMC6534303 DOI: 10.1371/journal.pone.0217130] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2018] [Accepted: 05/06/2019] [Indexed: 11/19/2022] Open
Abstract
Heterodera glycines (soybean cyst nematode, SCN) is one of the most devastating pathogens of soybean worldwide. The compatible and in compatible interactions between soybean and SCN have well documented. Nevertheless, the molecular mechanism of a nonhost resistant response in soybean against SCN infection remains obscure. Toward this end, a global transcriptional comparison was conducted between susceptible and resistant reactions of soybean roots infected by taking advantage of finding a new pathotype of SCN (SCNT). The soybean cultivar Lee, which exhibits resistant to SCNT and susceptible to HG 1.2.3.4.7 (SCNs) was utilized in the expriments. The results highlighted a nonhost resistant response of soybean. Transcriptome analysis indicated that the number of differentially expressed genes (DEGs) in the resistant interaction (3746) was much larger than that in the susceptible interaction (602). A great number of genes acting as intrinsic component of membrane, integral component of membrane, cell periphery and plasma membrance were remarkably enriched only in the resistant interaction, while the taurine and hypotaurine, phenylpropanoid pathway, plant-pathogen interaction and transcript factors were modulated in both interactions. This is the first study to examine genes expression patterns in a soybean genotype in response to invasion by a virulent and avirulent SCN population at the transcriptional level, which will provide insights into the complicate molecular mechanism of the nonhost resistant interaction.
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Affiliation(s)
- Wenwen Song
- Key Lab of Integrated Crop Pest Management of Shandong Province, College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao, China
| | - Nawei Qi
- Key Lab of Integrated Crop Pest Management of Shandong Province, College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao, China
| | - Chen Liang
- Key Lab of Integrated Crop Pest Management of Shandong Province, College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao, China
| | - Fangmeng Duan
- Key Lab of Integrated Crop Pest Management of Shandong Province, College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao, China
| | - Honghai Zhao
- Key Lab of Integrated Crop Pest Management of Shandong Province, College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao, China
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8
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Gao H, Qi N, Ma XS, Griffith BE, Berry C, Luo XY. 17 Numerical study of imaged-based human mitral valve coupled with the left ventricle. Heart 2015. [DOI: 10.1136/heartjnl-2015-308734.17] [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]
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9
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Qi N, Jung K, Wang M, Na LX, Yang ZJ, Zhang LR, Guse AH, Zhang LH. A novel membrane-permeant cADPR antagonist modified in the pyrophosphate bridge. Chem Commun (Camb) 2011; 47:9462-4. [PMID: 21785757 DOI: 10.1039/c1cc13062e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A concise method for the formation of cyclopyrophosphate of cIDPRE as well as sulfur and selenium-substituted pyrophosphate cIDPRE analogues (P(1)(S)-cIDPRE, P(1)(Se)-cIDPRE, P(2)(S)-cIDPRE and P(2)(Se)-cIDPRE) was reported and one of the P(S)-diastereoisomers, P(1)(S)-cIDPRE-1, is a novel membrane-permeant cADPR antagonist.
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Affiliation(s)
- N Qi
- State Key Laboratory of Natural & Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
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Jackson SL, Weber BV, Mosher D, Phipps DG, Stephanakis SJ, Commisso RJ, Qi N, Failor BH, Coleman PL. A comparison of planar, laser-induced fluorescence, and high-sensitivity interferometry techniques for gas-puff nozzle density measurements. Rev Sci Instrum 2008; 79:10E717. [PMID: 19044535 DOI: 10.1063/1.2979871] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The distribution of argon gas injected by a 12-cm-diameter triple-shell nozzle was characterized using both planar, laser-induced fluorescence (PLIF) and high-sensitivity interferometry. PLIF is used to measure the density distribution at a given time by detecting fluorescence from an acetone tracer added to the gas. Interferometry involves making time-dependent, line-integrated gas density measurements at a series of chordal locations that are then Abel inverted to obtain the gas density distribution. Measurements were made on nominally identical nozzles later used for gas-puff Z-pinch experiments on the Saturn pulsed-power generator. Significant differences in the mass distributions obtained by the two techniques are presented and discussed, along with the strengths and weaknesses of each method.
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Affiliation(s)
- S L Jackson
- Plasma Physics Division, Naval Research Laboratory, 4555 Overlook Ave., SW, Washington, DC 20375, USA
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11
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Gibbs BM, Cookson R, Qi N. Vibration activity and mobility of structure-borne sound sources by a reception plate method. J Acoust Soc Am 2008; 123:4199-4209. [PMID: 18537371 DOI: 10.1121/1.2904469] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
This paper considers a practical structure-borne sound source characterization for mechanical installations, which are connected to plate-like structures. It describes a laboratory-based measurement procedure, which will yield single values of source strength in a form transferable to a prediction of the structure-borne sound power generated in the installed condition. It is confirmed that two source quantities are required, corresponding to the source activity and mobility. For the source activity, a high-mobility reception plate method is proposed which yields a single value in the form of the sum of the squared free velocities, over the contact points. A low-mobility reception plate method also is proposed which, in conjunction with the above, yields the source mobility in the form of the average magnitude of the effective mobility, again over the contact points. Experimental case studies are described and the applicability of the laboratory data for prediction and limitations of the approach are discussed.
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Affiliation(s)
- B M Gibbs
- Acoustics Research Unit, School of Architecture, University of Liverpool, Liverpool L69 3BX, United Kingdom.
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12
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Wang B, Qi N, Gong W, Li X, Zhen Y. Study on the microstructure and mechanical properties for epoxy resin/montmorillonite nanocomposites by positron. Radiat Phys Chem Oxf Engl 1993 2007. [DOI: 10.1016/j.radphyschem.2006.03.021] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Nakamura K, Luo J, Wang H, Ji Z, Wang H, Wang F, Qi N, Sato K, Hanada K, Sakamoto M, Idei H, Hasegawa M, Iyomasa A, Kawasaki S, Nakashima H, Higashijima A. Magnetic sensorless control experiment without drift problem on HT-7. Fusion Engineering and Design 2006. [DOI: 10.1016/j.fusengdes.2005.08.094] [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: 10/25/2022]
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14
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Pravenec M, Kazdová L, Cahová M, Landa V, Zídek V, Mlejnek P, Simáková M, Wang J, Qi N, Kurtz TW. Fat-specific transgenic expression of resistin in the spontaneously hypertensive rat impairs fatty acid re-esterification. Int J Obes (Lond) 2006; 30:1157-9. [PMID: 16432541 DOI: 10.1038/sj.ijo.0803237] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE To investigate the mechanism by which fat-specific transgenic expression of resistin affects fatty acid metabolism in the spontaneously hypertensive rat (SHR). DESIGN Basal- and adrenaline-stimulated lipolysis, basal- and insulin-stimulated lipogenesis as well as the site (glycerol versus acyl moiety) of glucose incorporated into triglycerides were determined in adipose tissue isolated from SHR-Resistin transgenic and SHR control rats. RESULTS A moderate expression of transgenic resistin in adipose tissue was associated with significant increase in the FFA/glycerol ratio during adrenaline-stimulated lipolysis in the SHR-Resistin transgenic rats (3.27+/-0.26) compared to SHR controls (2.11+/-0.10, P=0.0005). Transgenic SHR also exhibited a significant decrease in FFA re-esterification in adipose tissue (approximately by 23%). CONCLUSION These findings raise the possibility that the prodiabetic effects of transgenic resistin may be partly mediated by increased FFA release from adipose tissue due to impaired FFA re-esterification in adipocytes.
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Affiliation(s)
- M Pravenec
- Institute of Physiology, Czech Academy of Sciences and Center for Applied Genomics, Prague, Czech Republic.
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15
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Sze H, Banister J, Failor BH, Levine JS, Qi N, Velikovich AL, Davis J, Lojewski D, Sincerny P. Efficient radiation production in long implosions of structured gas-puff Z pinch loads from large initial radius. Phys Rev Lett 2005; 95:105001. [PMID: 16196936 DOI: 10.1103/physrevlett.95.105001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2005] [Indexed: 05/04/2023]
Abstract
We have proposed and demonstrated successfully a new approach for generating high-yield K-shell radiation with large-diameter gas-puff Z pinches. The novel load design consists of an outer region plasma that carries the current and couples energy from the driver, an inner region plasma that stabilizes the implosion, and a high-density center jet plasma that radiates. It increased the Ar K-shell yield at 3.46 MA in 200 ns implosions from 12 cm initial diameter by a factor of 2, to 21 kJ, matching the yields obtained earlier on the same accelerator with 100 ns implosions. A new "pusher-stabilizer-radiator" physical model is advanced to explain this result.
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Affiliation(s)
- H Sze
- L-3 Titan Pulse Sciences Division, San Leandro, California, 94577, USA
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16
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Zídek V, Landa V, Mlejnek P, Qi N, Wang J, Kazdová L, Pravenec M, Kurtz T. W09-P-027 A new transgenic rat model of hepaticsteatosis and the metabolic syndrome. ATHEROSCLEROSIS SUPP 2005. [DOI: 10.1016/s1567-5688(05)80182-5] [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: 10/25/2022]
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17
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Wang Z, Wang B, Qi N, Zhang H, Zhang L. Influence of fillers on free volume and gas barrier properties in styrene-butadiene rubber studied by positrons. POLYMER 2005. [DOI: 10.1016/j.polymer.2004.12.002] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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18
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Wang B, Gong W, Liu W, Wang Z, Qi N, Li X, Liu M, Li S. Influence of physical aging and side group on the free volume of epoxy resins probed by positron. POLYMER 2003. [DOI: 10.1016/s0032-3861(03)00306-9] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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19
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Pravenec M, Landa V, Zídek V, Musilová A, Kazdová L, Qi N, Wang J, St Lezin E, Kurtz TW. Transgenic expression of CD36 in the spontaneously hypertensive rat is associated with amelioration of metabolic disturbances but has no effect on hypertension. Physiol Res 2003; 52:681-8. [PMID: 14640889] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/27/2023] Open
Abstract
Spontaneously hypertensive rats (SHR/NIH strain) harbor a deletion variant in the Cd36 fatty acid transporter and display defective fatty acid metabolism, insulin resistance and hypertension. Transgenic rescue of Cd36 in SHR ameliorates insulin resistance and improves dyslipidemia. However, the role of Cd36 in blood pressure regulation remains controversial due to inconsistent blood pressure effects that were observed with transgenic expression of Cd36 on the SHR background. In the current studies, we developed two new SHR transgenic lines, which express wild type Cd36 under the control of the universal Ef-1 alpha promoter, and examined the effects of transgenic expression of wild type Cd36 on selected metabolic and cardiovascular phenotypes. Transgenic expression of Cd36 in the new lines was associated with significantly decreased serum fatty acids, amelioration of insulin resistance and glucose intolerance but failed to induce any consistent changes in blood pressure as measured by radiotelemetry. The current findings confirm the genetic association of defective Cd36 with disordered insulin action and fatty acid metabolism in the SHR/NIH strain and suggest that Cd36 is linked to other gene(s) on rat chromosome 4 that regulate blood pressure.
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Affiliation(s)
- M Pravenec
- Institute of Physiology, Academy of Sciences of the Czech Republic, Vídenská 1083, 142 20 Prague 4, Czech Republic.
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Pravenec M, Landa V, Zidek V, Mlejnek P, Kazdova L, Wang J, Qi N, Kurtz T. 2P-0391 Effects of transgenic and recombinant resistin on muscle insulin resistance in the spontaneously hypertensive rat. ATHEROSCLEROSIS SUPP 2003. [DOI: 10.1016/s1567-5688(03)90533-2] [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: 11/25/2022]
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21
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Qi N. Does a difference in testosterone levels explain the difference in blood pressure between SHR progenitor and Y chromosome consomic rats? Am J Hypertens 2001. [DOI: 10.1016/s0895-7061(01)01756-3] [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: 11/30/2022] Open
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22
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Qi N. The fatty acid transporter CD36 is a major determinant of the insulin sensitizing actions of pioglitazone in the spontaneously hypertensive rat. Am J Hypertens 2001. [DOI: 10.1016/s0895-7061(01)01319-x] [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: 10/18/2022] Open
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23
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Kren V, Qi N, Krenova D, Zidek V, Sladká M, Jáchymová M, Míková B, Horky K, Bonne A, Van Lith HA, Van Zutphen BF, Lau YF, Pravenec M, St Lezin E. Y-chromosome transfer induces changes in blood pressure and blood lipids in SHR. Hypertension 2001; 37:1147-52. [PMID: 11304517 DOI: 10.1161/01.hyp.37.4.1147] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [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: 11/16/2022]
Abstract
Previous studies with chromosome-Y consomic strains of spontaneously hypertensive rats (SHR) and Wistar-Kyoto rats suggest that a quantitative trait locus for blood pressure regulation exists on chromosome Y. To test this hypothesis in the SHR-Brown Norway (BN) model and to study the effects of chromosome Y on lipid and carbohydrate metabolism, we produced a new consomic strain of SHR carrying the Y chromosome transferred from the BN rat. We found that replacing the SHR Y chromosome with the BN Y chromosome resulted in significant decreases in systolic and diastolic blood pressures in the SHR.BN-Y consomic strain (P<0.05). To elicit possible dietary-induced variation in lipid and glucose metabolism between the SHR progenitor and chromosome-Y consomic strains, we fed rats a high-fructose diet for 15 days in addition to the normal diet. On the high-fructose diet, the SHR.BN-Y consomic rats exhibited significantly increased levels of serum triglycerides and decreased levels of serum HDL cholesterol versus the SHR progenitor rats. Glucose tolerance and insulin/glucose ratios, however, were similar in both strains on both normal and high-fructose diets. These findings provide direct evidence that a gene or genes on chromosome Y contribute to the pathogenesis of spontaneous hypertension in the SHR-BN model. These results also indicate that transfer of the Y chromosome from the BN rat onto the SHR background exacerbates dietary-induced dyslipidemia in SHR. Thus, genetic variation in genes on the Y chromosome may contribute to variation in blood pressure and lipid levels and may influence the risk for cardiovascular disease.
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Affiliation(s)
- V Kren
- Institute of Biology and Medical Genetics, First Medical Faculty, Charles University, Prague, Czech Republic
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Pravenec M, Landa V, Zidek V, Musilova A, Kren V, Kazdova L, Aitman TJ, Glazier AM, Ibrahimi A, Abumrad NA, Qi N, Wang JM, St Lezin EM, Kurtz TW. Transgenic rescue of defective Cd36 ameliorates insulin resistance in spontaneously hypertensive rats. Nat Genet 2001; 27:156-8. [PMID: 11175782 DOI: 10.1038/84777] [Citation(s) in RCA: 149] [Impact Index Per Article: 6.5] [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: 11/09/2022]
Abstract
Spontaneously hypertensive rats (SHR) display several features of the human insulin-resistance syndromes. Cd36 deficiency is genetically linked to insulin resistance in SHR. We show that transgenic expression of Cd36 in SHR ameliorates insulin resistance and lowers serum fatty acids. Our results provide direct evidence that Cd36 deficiency can promote defective insulin action and disordered fatty-acid metabolism in spontaneous hypertension.
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Affiliation(s)
- M Pravenec
- Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic
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Abstract
We developed a device that delivers fluid through a catheter at a constant rate and can be used in conscious animals to solve a variety of problems. For example, this device can be used for delivering drugs and maintaining intravascular catheter patency. The device provides infusions at low flows (1.0-1.5 ml/day), so that experimental agents may be administered with minimal volume loading of the rat. Arterial and venous catheter patency is maintained by infusion of heparinized saline through indwelling catheters attached to the device. The catheters exit from the rat in the intrascapular area and are routed through a protective spring to the device, which is suspended above the cage. The catheters may be attached to pressure transducers, blood may be sampled, and injections or infusions may be made without disturbing the rat. Because the device is self-contained, it can be suspended by a fluid-free swivel that rotates through 360 degrees, providing minimal restraint. The device has been used successfully to measure arterial and central venous blood pressures in two studies using rats.
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Affiliation(s)
- P H Brand
- Department of Physiology and Molecular Medicine, Medical College of Ohio, Toledo 43614-5804, USA.
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St Lezin E, Liu W, Wang JM, Yang Y, Qi N, Kren V, Zidek V, Kurtz TW, Pravenec M. Genetic analysis of rat chromosome 1 and the Sa gene in spontaneous hypertension. Hypertension 2000; 35:225-30. [PMID: 10642302 DOI: 10.1161/01.hyp.35.1.225] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [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: 11/16/2022]
Abstract
Linkage studies in segregating populations derived from the spontaneously hypertensive rat (SHR) indicate that a blood pressure quantitative trait locus exists on rat chromosome 1 in the vicinity of the Sa gene. On the basis of these findings and the observation of increased renal expression of the Sa gene in SHR versus normotensive rats, the Sa gene has been proposed as a candidate gene for spontaneous hypertension. In SHR congenic strains, we and others have found that replacement of a segment of SHR chromosome 1 that contains the Sa gene with the corresponding chromosome segment from a normotensive Brown Norway (BN) rat or Wistar-Kyoto rat can reduce blood pressure. To test whether the Sa gene is necessary for the effect of this region of chromosome 1 on blood pressure, we studied a new SHR congenic subline that harbors a smaller segment of BN chromosome 1 that does not include the Sa gene. Transfer of this subregion of chromosome 1 from the BN rat onto the SHR background was associated with significant reductions in blood pressure comparable to those previously observed on transfer of a larger region of chromosome 1 that included the Sa gene. Thus, in the SHR-BN model of hypertension, the results of these mapping studies (1) demonstrate that molecular variation in the Sa gene is not required for the effect of this region of chromosome 1 on blood pressure and (2) should direct attention toward other candidate genes within the differential chromosome segment of the new congenic subline.
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Affiliation(s)
- E St Lezin
- Department of Laboratory Medicine, University of California, San Francisco 94143-1613, USA.
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27
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Chen L, Qi N, Houmam A, Wayner DDM, Weininger SJ, McGimpsey WG. Hole Transfer Equilibrium in Rigidly Linked Bichromophoric Molecules. J Phys Chem A 1999. [DOI: 10.1021/jp9922211] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- L. Chen
- Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, Worcester, Massachusetts 01609, Steacie Institute of Molecular Sciences, National Research Council Canada, Ottawa, Canada, K1A 0R6
| | - N. Qi
- Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, Worcester, Massachusetts 01609, Steacie Institute of Molecular Sciences, National Research Council Canada, Ottawa, Canada, K1A 0R6
| | - A. Houmam
- Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, Worcester, Massachusetts 01609, Steacie Institute of Molecular Sciences, National Research Council Canada, Ottawa, Canada, K1A 0R6
| | - Danial D. M. Wayner
- Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, Worcester, Massachusetts 01609, Steacie Institute of Molecular Sciences, National Research Council Canada, Ottawa, Canada, K1A 0R6
| | - Stephen J. Weininger
- Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, Worcester, Massachusetts 01609, Steacie Institute of Molecular Sciences, National Research Council Canada, Ottawa, Canada, K1A 0R6
| | - W. Grant McGimpsey
- Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, Worcester, Massachusetts 01609, Steacie Institute of Molecular Sciences, National Research Council Canada, Ottawa, Canada, K1A 0R6
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Abstract
To evaluate the importance of volume in the development of hypertension in inbred Dahl salt-sensitive rats (SS/Jr), we measured the changes in blood pressure (BP) that occurred with oral intake of food (salt) and water in rats whose body weight was permitted to increase versus those in which body weight was maintained constant with a servo-control system. We hypothesized that if volume expansion is essential in the development of hypertension, then BP would not increase if body weight was held constant. We found that oral presentation of chow containing 4% salt to SS/Jr rats caused BP to increase 32.2 +/- 2.9 mmHg over 4 days when body weight was controlled at its initial value. Plasma sodium increased from 142.0 to 145.2 meq/l during 4 days of high salt. Neither plasma volume, hematocrit, nor central venous pressure changed significantly on the high-salt diet. In contrast, the inbred Dahl salt-resistant rats (SR/Jr) did not increase their BP during body weight control when given 4% salt. This demonstrates that volume expansion is not an obligatory step in the pressure response to increased salt in SS/Jr rats. Our results obtained with oral presentation of salt, in contrast to intravenous, represent a physiological evaluation of the significance of volume changes in response to dietary salt because no potential regulatory reflexes have been bypassed.
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Affiliation(s)
- N Qi
- Laboratory of Cardiovascular Research, Department of Physiology, Medical College of Ohio, Toledo, Ohio 43614-5804, USA
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29
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St Lezin E, Zhang L, Yang Y, Wang JM, Wang N, Qi N, Steadman JS, Liu W, Kren V, Zidek V, Krenova D, Churchill PC, Churchill MC, Pravenec M. Effect of chromosome 19 transfer on blood pressure in the spontaneously hypertensive rat. Hypertension 1999; 33:256-60. [PMID: 9931113 DOI: 10.1161/01.hyp.33.1.256] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [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: 11/16/2022]
Abstract
Linkage studies in the spontaneously hypertensive rat (SHR) have suggested that a gene or genes regulating blood pressure may exist on rat chromosome 19 in the vicinity of the angiotensinogen gene. To test this hypothesis, we measured blood pressure in SHR progenitor and congenic strains that are genetically identical except for a segment of chromosome 19 containing the angiotensinogen gene transferred from the normotensive Brown Norway (BN) strain. Transfer of this segment of chromosome 19 from the BN strain onto the genetic background of the SHR induced significant decreases in systolic and diastolic blood pressures in the recipient SHR chromosome 19 congenic strain. To test for differences in angiotensinogen gene expression between the congenic and progenitor strains, we measured angiotensinogen mRNA levels in a variety of tissues, including aorta, brain, kidney, and liver. We found no differences between the progenitor and congenic strains in the angiotensinogen coding sequence or in angiotensinogen expression that would account for the blood pressure differences between the strains. In addition, no significant differences in plasma levels of angiotensinogen or plasma renin activity were detected between the 2 strains. Thus, transfer of a segment of chromosome 19 containing angiotensinogen from the BN rat into the SHR induces a decrease in blood pressure without inducing any major changes in plasma angiotensinogen levels or plasma renin activity. These results indicate that the differential chromosome segment trapped in the SHR chromosome 19 congenic strain contains a quantitative trait locus that influences blood pressure in the SHR but that this blood pressure effect is not explained by differences in plasma angiotensinogen levels or angiotensinogen expression.
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Affiliation(s)
- E St Lezin
- Department of Laboratory Medicine, University of California, San Francisco 94143-1613, USA.
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30
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Qi N, Hammer DA, Kalantar DH, Mittal KC. Fluorescence in Mg IX emission at 48.340 Å from Mg pinch plasmas photopumped by Al XromanI line radiation at 48.338. Phys Rev A 1993; 47:2253-2263. [PMID: 9909177 DOI: 10.1103/physreva.47.2253] [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: 05/22/2023]
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31
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Ford WT, Qi N, Read AL, Smith JG, Camporesi T, Peruzzi I, Piccolo M, Hurst RB, Pyrlik J, Venuti JP, Weinstein R, Gettner MW, Goderre GP, Sleeman JC, Chadwick GB, Leedy RE, Messner RL, Moss LJ, Muller F, Nelson HN, Ritson DM, Rosenberg LJ, Wiser DE, Zdarko RW, Groom DE, Verdini PG, Band HR, Delfino MC, Johnson JR, Lavine TL, Maruyama T, Prepost R. Measurement of alpha s from hadron jets in e+e- annihilation at sqrt s of 29 GeV. Phys Rev D Part Fields 1989; 40:1385-1396. [PMID: 10011957 DOI: 10.1103/physrevd.40.1385] [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: 05/22/2023]
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32
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Qi N, Krishnan M. Theoretical and experimental study of uv lasers in Be-like ions pumped by resonant photoexcitation. Phys Rev A Gen Phys 1989; 39:4651-4667. [PMID: 9901815 DOI: 10.1103/physreva.39.4651] [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: 05/22/2023]
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33
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Ford WT, Qi N, Read AL, Smith JG, Camporesi T, Peruzzi I, Piccolo M, Hurst RB, Pyrlik J, Venuti JP, Weinstein R, Gettner MW, Goderre GP, Sleeman JC, Chadwick GB, Leedy RE, Messner RL, Moss LJ, Muller F, Nelson HN, Ritson DM, Rosenberg LJ, Wiser DE, Zdarko RW, Groom DE, Verdini PG, Band HR, Delfino MC, Johnson JR, Lavine TL, Maruyama T, Prepost R. Measurement of the polarization of tau leptons produced in e+e- annihilation at sqrt s =29 GeV. Phys Rev D Part Fields 1987; 36:1971-1982. [PMID: 9958388 DOI: 10.1103/physrevd.36.1971] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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35
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Band HR, Bosman M, Camporesi T, Chadwick GB, Delfino MC, Ford WT, Gettner MW, Goderre GP, Godfrey GL, Groom DE, Hurst RB, Johnson JR, Lavine TL, Leedy RE, Lippi I, Maruyama T, Messner RL, Moss LJ, Muller F, Nelson HN, Peruzzi I, Piccolo M, Prepost R, Pyrlik J, Qi N, Read AL, Ritson DM, Rosenberg LJ, Sleeman JC, Smith JG, Venuti JP, Verdini PG, Weinstein R, Wiser DE, Zdarko RW. Precise measurement of the lifetime of the tau lepton. Phys Rev Lett 1987; 59:415-418. [PMID: 10035763 DOI: 10.1103/physrevlett.59.415] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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36
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Ash WW, Band HR, Camporesi T, Chadwick GB, Delfino MC, Ford WT, Gettner MW, Goderre GP, Groom DE, Hurst RB, Johnson JR, Lau KH, Lavine TL, Leedy RE, Maruyama T, Messner RL, Moromisato JH, Moss LJ, Muller F, Nelson HN, Peruzzi I, Piccolo M, Prepost R, Pyrlik J, Qi N, Read AL, Ritson DM, Ronga F, Rosenberg LJ, Shambroom WD, Sleeman JC, Smith JG, Venuti JP, Verdini PG, Wald HB, Weinstein R, Wiser DE, Zdarko RW. Observation of charge asymmetry in hadron jets from e+e- annihilation at sqrt s =29 GeV. Phys Rev Lett 1987; 58:1080-1083. [PMID: 10034334 DOI: 10.1103/physrevlett.58.1080] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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37
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Ash WW, Band HR, Bloom ED, Bosman M, Camporesi T, Chadwick GB, Delfino MC, Ford WT, Gettner MW, Goderre GP, Godfrey GL, Groom DE, Hurst RB, Johnson JR, Lau KH, Lavine TL, Leedy RE, Lippi I, Maruyama T, Messner RL, Moromisato JH, Moss LJ, Muller F, Nelson HN, Peruzzi I, Piccolo M, Prepost R, Pyrlik J, Qi N, Read AL, Ritson DM, Rosenberg LJ, Shambroom WD, Sleeman JC, Smith JG, Venuti JP, Verdini PG, Wald HB, Weinstein R, Wiser DE, Zdarko RW. Determination of the lifetime of bottom hadrons. Phys Rev Lett 1987; 58:640-643. [PMID: 10034997 DOI: 10.1103/physrevlett.58.640] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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38
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Fernandez EW, Ford WT, Qi N, Read AL, Smith JG, Camporesi T, Peruzzi I, Piccolo M, Hurst RB, Lau KH, Pyrlik J, Venuti JP, Wald HB, Weinstein R, Band HR, Gettner MW, Goderre GP, Moromisato JH, Shambroom WD, Sleeman JC, Ash WW, Chadwick GB, Leedy RE, Messner RL, Moss LJ, Muller F, Nelson HN, Ritson DM, Rosenberg LJ, Wiser DE, Zdarko RW, Groom DE, Verdini PG, Delfino MC, Johnson JR, Lavine TL, Maruyama T, Prepost R. Search for single electrons from supersymmetric-particle production. Int J Clin Exp Med 1987; 35:374-377. [PMID: 9957522 DOI: 10.1103/physrevd.35.374] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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39
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Fernandez E, Ford WT, Qi N, Read AL, Smith JG, Camporesi T, Peruzzi I, Piccolo M, Blume HT, Hurst RB, Lau KH, Pyrlik J, Venuti JP, Wald HB, Weinstein AR, Band HR, Gettner MW, Goderre GP, Moromisato JH, Shambroom WD, Sleeman JC, Ash WW, Chadwick GB, Leedy RE, Messner RL, Moss LJ, Muller F, Nelson HN, Ritson DM, Rosenberg LJ, Wiser DE, Zdarko RW. Tests of quantum electrodynamics with two-, three-, and four-photon final states from e+e- annihilation at sqrt s =29 GeV. Phys Rev D Part Fields 1987; 35:1-9. [PMID: 9957486 DOI: 10.1103/physrevd.35.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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40
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Ford WT, Qi N, Read AL, Smith JG, Camporesi T, Peruzzi I, Piccolo M, Hurst RB, Lau KH, Pyrlik J, Venuti JP, Wald HB, Weinstein R, Band HR, Gettner MW, Goderre GP, Moromisato JH, Shambroom WD, Sleeman JC, Ash WW, Chadwick GB, Leedy RE, Messner RL, Moss LJ, Muller F, Nelson HN, Ritson DM, Rosenberg LJ, Wiser DE, Zdarko RW, Groom DE, Verdini PG, Delfino MC, Johnson JR, Lavine TL, Maruyama T, Prepost R. Precise measurement of the branching fraction for the decay tau --> nu tau pi. Int J Clin Exp Med 1987; 35:408-411. [PMID: 9957534 DOI: 10.1103/physrevd.35.408] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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41
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Fernandez E, Ford WT, Qi N, Read AL, Smith JG, Camporesi T, Peruzzi I, Piccolo M, Blume HT, Hurst RB, Lau KH, Pyrlik J, Venuti JP, Wald HB, Weinstein AR, Band HR, Gettner MW, Goderre GP, Moromisato JH, Shambroom WD, Sleeman JC, Ash WW, Chadwick GB, Leedy RE, Messner RL, Moss LJ, Muller F, Nelson HN, Ritson DM, Rosenberg LJ, Wiser DE, Zdarko RW, Groom DE, Verdini PG, Delfino MC, Heltsley BK, Johnson JR, Lavine TL, Maruyama T, Prepost R. Electroweak effects in e+e--->e+e- at sqrt s =29 GeV. Phys Rev D Part Fields 1987; 35:10-18. [PMID: 9957487 DOI: 10.1103/physrevd.35.10] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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42
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Ford WT, Qi N, Read AL, Smith JG, Camporesi T, Peruzzi I, Piccolo M, Hurst RB, Lau KH, Pyrlik J, Venuti JP, Wald HB, Weinstein R, Band HR, Gettner MW, Goderre GP, Moromisato JH, Shambroom WD, Sleeman JC, Ash WW, Chadwick GB, Leedy RE, Messner RL, Moss LJ, Muller F, Nelson HN, Ritson DM, Rosenberg LJ, Wiser DE, Zdarko RW, Groom DE, Verdini PG, Delfino MC, Johnson JR, Lavine TL, Maruyama T, Prepost R. Search for single photons from radiative neutrino or supersymmetric-particle production. Phys Rev D Part Fields 1986; 33:3472-3475. [PMID: 9956572 DOI: 10.1103/physrevd.33.3472] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Ash WW, Band HR, Blume HT, Camporesi T, Chadwick GB, Coombes RW, Delfino MC, Fernandez E, Ford WT, Gettner MW, Goderre GP, Groom DE, Heltsley BK, Hurst RB, Johnson JR, Lau KH, Lavine TL, Leedy RE, Lippi I, Maruyama T, Messner RL, Moromisato JH, Moss LJ, Muller F, Nelson HN, Peruzzi I, Piccolo M, Prepost R, Qi N, Read AL, Ritson DM, Rosenberg LJ, Shambroom WD, Sleeman JC, Smith JG, Venuti JP, Verdini P, Wald HB, Weinstein R, Wiser DE, Zdarko RW. Precise measurements of the leptonic branching ratios of the tau lepton. Phys Rev Lett 1985; 55:2118-2121. [PMID: 10032053 DOI: 10.1103/physrevlett.55.2118] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Ash WW, Band HR, Blume HT, Camporesi T, Chadwick GB, Clearwater SH, Coombes RW, Delfino MC, Fernandez E, Ford WT, Gettner MW, Goderre GP, Groom DE, Heltsley BK, Hurst RB, Johnson JR, Lau KH, Lavine TL, Leedy RE, Lippi I, Maruyama T, Messner RL, Moromisato JH, Moss LJ, Muller F, Nelson HN, Peruzzi I, Piccolo M, Prepost R, Qi N, Read AL, Ritson DM, Rosenberg LJ, Shambroom WD, Sleeman JC, Smith JG, Venuti JP, Wald HB, Weinstein R, Wiser DE, Zdarko RW. Precision Measurement of Electroweak Effects in e+e---> micro+ micro- at sqrt s =29 GeV. Phys Rev Lett 1985; 55:1831-1834. [PMID: 10031938 DOI: 10.1103/physrevlett.55.1831] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Ash WW, Band HR, Blume HT, Camporesi T, Chadwick GB, Clearwater SH, Coombes RW, Delfino MC, Fernandez E, Ford WT, Gettner MW, Goderre GP, Groom DE, Heltsley BK, Hurst RB, Johnson JR, Lau KH, Lavine TL, Lee HY, Leedy RE, Marini A, Maruyama T, Messner RL, Moromisato JH, Moss LJ, Muller F, Nelson HN, Peruzzi I, Piccolo M, Prepost R, Qi N, Read AL, Ritson DM, Rosenberg LJ, Shambroom WD, Sleeman JC, Smith JG, Venuti JP, Wald HB, Weinstein R, Wiser DE, Zdarko RW. Search for monojet production in e+e- annihilation. Phys Rev Lett 1985; 54:2477-2480. [PMID: 10031353 DOI: 10.1103/physrevlett.54.2477] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Fernandez E, Ford WT, Qi N, Read AL, Smith JG, Camporesi T, Marini A, Peruzzi I, Piccolo M, Ronga F, Blume HT, Hurst RB, Sleeman JC, Venuti JP, Wald HB, Weinstein R, Band HR, Gettner MW, Goderre GP, Meyer OA, Moromisato JH, Shambroom WD, Ash WW, Chadwick GB, Clearwater SH, Coombes RW, Kaye HS, Lau KH, Leedy RE, Lynch HL, Messner RL, Moss LJ, Muller F, Nelson HN, Ritson DM, Rosenberg LJ, Wiser DE, Zdarko RW, Groom DE, Lee H, Delfino MC, Heltsley BK, Johnson JR, Lavine TL, Maruyama T, Prepost R. Measurement of energy-energy correlations in e+e--->hadrons at sqrt s =29 GeV. Phys Rev D Part Fields 1985; 31:2724-2731. [PMID: 9955586 DOI: 10.1103/physrevd.31.2724] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Fernandez E, Ford WT, Qi N, Read AL, Smith JG, Camporesi T, Marini A, Peruzzi I, Piccolo M, Ronga F, Blume HT, Hurst RB, Venuti JP, Wald HB, Weinstein R, Band HR, Gettner MW, Goderre GP, Meyer OA, Moromisato JH, Shambroom WD, Sleeman JC, Ash WW, Chadwick GB, Clearwater SH, Coombes RW, Kaye HS, Lau KH, Leedy RE, Lynch HL, Messner RL, Moss LJ, Muller F, Nelson HN, Ritson DM, Rosenberg LJ, Wiser DE, Zdarko RW, Groom DE, Lee H, Delfino MC, Heltsley BK, Johnson JR, Lavine TL, Maruyama T, Prepost R. Electroweak effects in e+e---> tau + tau - at 29 GeV. Phys Rev Lett 1985; 54:1620-1623. [PMID: 10031090 DOI: 10.1103/physrevlett.54.1620] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Fernandez E, Ford WT, Qi N, Read AL, Smith JG, Camporesi T, Marini A, Peruzzi I, Piccolo M, Ronga F, Blume HT, Hurst RB, Venuti JP, Wald HB, Weinstein R, Band HR, Gettner MW, Goderre GP, Meyer OA, Moromisato JH, Shambroom WD, Sleeman JC, Ash WW, Chadwick GB, Clearwater SH, Coombes RW, Kaye HS, Lau KH, Leedy RE, Lynch HL, Messner RL, Moss LJ, Muller F, Nelson HN, Ritson DM, Rosenberg LJ, Wiser DE, Zdarko RW, Groom DE, Lee H, Delfino MC, Heltsley BK, Johnson JR, Lavine TL, Maruyama T, Prepost R. Measurement of tau lifetime and branching ratios. Phys Rev Lett 1985; 54:1624-1627. [PMID: 10031091 DOI: 10.1103/physrevlett.54.1624] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Fernandez E, Ford WT, Qi N, Read AL, Smith JG, Camporesi T, Marini A, Peruzzi I, Piccolo M, Ronga F, Blume HT, Hurst RB, Sleeman JC, Venuti JP, Wald HB, Weinstein R, Band HR, Gettner MW, Goderre GP, Gottschalk B, Meyer OA, Moromisato JH, Shambroom WD, Ash WW, Chadwick GB, Clearwater SH, Coombes RW, Kaye HS, Lau KH, Leedy RE, Lynch HL, Messner RL, Michalowski SJ, Muller F, Moss LJ, Nelson HN, Rich K, Ritson DM, Rosenberg LJ, Wiser DE, Zdarko RW, Groom DE, Lee H, Loh EC, Delfino MC, Heltsley BK, Johnson JR, Lavine TL, Maruyama T, Prepost R. Precision measurement of the total cross section for e+e--->hadrons at a center-of-mass energy of 29 GeV. Phys Rev D Part Fields 1985; 31:1537-1556. [PMID: 9955871 DOI: 10.1103/physrevd.31.1537] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Fernandez E, Ford WT, Qi N, Read AL, Smith JG, Camporesi T, Marini A, Peruzzi I, Piccolo M, Ronga F, Blume HT, Hurst RB, Venuti JP, Wald HB, Weinstein R, Band HR, Gettner MW, Goderre GP, Meyer OA, Moromisato JH, Polvado RO, Shambroom WD, Sleeman JC, Ash WW, Chadwick GB, Clearwater SH, Coombes RW, Kaye HS, Lau KH, Leedy RE, Lynch HL, Messner RL, Moss LJ, Muller F, Nelson HN, Ritson DM, Rosenberg LJ, Wiser DE, Zdarko RW, Groom DE, Lee HY, Delfino MC, Heltsley BK, Johnson JR, Lavine TL, Maruyama T, Prepost R. Search for single photons from supersymmetric particle production. Phys Rev Lett 1985; 54:1118-1121. [PMID: 10030935 DOI: 10.1103/physrevlett.54.1118] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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