101
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Naruse K, Kim HR, Kim BC, Han RX, Choi SM, Kim MY, Park CS, Jin DI. Effects of 5-AZA-2'-Deoxyctidine on Development of Porcine Parthenogenetic and Cloned Embryos. Biol Reprod 2008. [DOI: 10.1093/biolreprod/78.s1.208] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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102
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Choi SM, Naruse K, Han RJ, Kim BC, Kim MY, Park CS, Jin DI. Longer Exposure of Porcine Nuclear Transfer Embryos to Cycloheximide Increases Apoptosis Rate in Blastocysts. Biol Reprod 2008. [DOI: 10.1093/biolreprod/78.s1.293c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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103
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Ecklund KM, Love W, Savinov V, Lopez A, Mendez H, Ramirez J, Ge JY, Miller DH, Shipsey IPJ, Xin B, Adams GS, Anderson M, Cummings JP, Danko I, Hu D, Moziak B, Napolitano J, He Q, Insler J, Muramatsu H, Park CS, Thorndike EH, Yang F, Artuso M, Blusk S, Khalil S, Li J, Mountain R, Nisar S, Randrianarivony K, Sultana N, Skwarnicki T, Stone S, Wang JC, Zhang LM, Bonvicini G, Cinabro D, Dubrovin M, Lincoln A, Rademacker J, Asner DM, Edwards KW, Naik P, Reed J, Briere RA, Ferguson T, Tatishvili G, Vogel H, Watkins ME, Rosner JL, Alexander JP, Cassel DG, Duboscq JE, Ehrlich R, Fields L, Gibbons L, Gray R, Gray SW, Hartill DL, Heltsley BK, Hertz D, Jones CD, Kandaswamy J, Kreinick DL, Kuznetsov VE, Mahlke-Krüger H, Mohapatra D, Onyisi PUE, Patterson JR, Peterson D, Riley D, Ryd A, Sadoff AJ, Shi X, Stroiney S, Sun WM, Wilksen T, Athar SB, Patel R, Yelton J, Rubin P, Eisenstein BI, Karliner I, Mehrabyan S, Lowrey N, Selen M, White EJ, Wiss J, Mitchell RE, Shepherd MR, Besson D, Pedlar TK, Cronin-Hennessy D, Gao KY, Hietala J, Kubota Y, Klein T, Lang BW, Poling R, Scott AW, Zweber P, Dobbs S, Metreveli Z, Seth KK, Tomaradze A, Libby J, Powell A, Wilkinson G. Measurement of the absolute branching fraction of Ds+ --> tau+ nutau decay. PHYSICAL REVIEW LETTERS 2008; 100:161801. [PMID: 18518183 DOI: 10.1103/physrevlett.100.161801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2007] [Indexed: 05/26/2023]
Abstract
Using a sample of tagged D(s)(+) decays collected near the D(s)(*+/-)D(s)(-/+) peak production energy in e(+)e(-) collisions with the CLEO-c detector, we study the leptonic decay D(s)(+)-->tau(+)nu(tau) via the decay channel tau(+)-->e(+)nu(e)nu(tau). We measure B(D(s)(+)-->tau(+)nu(tau))=(6.17+/-0.71+/-0.34)%, where the first error is statistical and the second systematic. Combining this result with our measurements of D(s)(+)-->mu(+)nu(mu) and D(s)(+)-->tau(+)nu(tau) (via tau(+)-->pi(+)nu(tau)), we determine f(D(s))=(274+/-10+/-5) MeV.
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Alexander JP, Berkelman K, Cassel DG, Duboscq JE, Ehrlich R, Fields L, Gibbons L, Gray R, Gray SW, Hartill DL, Heltsley BK, Hertz D, Jones CD, Kandaswamy J, Kreinick DL, Kuznetsov VE, Mahlke-Krüger H, Mohapatra D, Onyisi PUE, Patterson JR, Peterson D, Riley D, Ryd A, Sadoff AJ, Shi X, Stroiney S, Sun WM, Wilksen T, Athar SB, Patel R, Yelton J, Rubin P, Eisenstein BI, Karliner I, Mehrabyan S, Lowrey N, Selen M, White EJ, Wiss J, Mitchell RE, Shepherd MR, Besson D, Pedlar TK, Cronin-Hennessy D, Gao KY, Hietala J, Kubota Y, Klein T, Lang BW, Poling R, Scott AW, Zweber P, Dobbs S, Metreveli Z, Seth KK, Tomaradze A, Libby J, Powell A, Wilkinson G, Ecklund KM, Love W, Savinov V, Lopez A, Mendez H, Ramirez J, Ge JY, Miller DH, Sanghi B, Shipsey IPJ, Xin B, Adams GS, Anderson M, Cummings JP, Danko I, Hu D, Moziak B, Napolitano J, He Q, Insler J, Muramatsu H, Park CS, Thorndike EH, Yang F, Artuso M, Blusk S, Khalil S, Li J, Mountain R, Nisar S, Randrianarivony K, Sultana N, Skwarnicki T, Stone S, Wang JC, Zhang LM, Bonvicini G, Cinabro D, Dubrovin M, Lincoln A, Rademacker J, Asner DM, Edwards KW, Naik P, Briere RA, Ferguson T, Tatishvili G, Vogel H, Watkins ME, Rosner JL. Absolute measurement of hadronic branching fractions of the Ds+ meson. PHYSICAL REVIEW LETTERS 2008; 100:161804. [PMID: 18518186 DOI: 10.1103/physrevlett.100.161804] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2007] [Indexed: 05/26/2023]
Abstract
The branching fractions of D(s)(+/-) meson decays serve to normalize many measurements of processes involving charm quarks. Using 298 pb(-1) of e(+)e(-) collisions recorded at a center of mass energy of 4.17 GeV, we determine absolute branching fractions for eight D(s)(+/-) decays with a double tag technique. In particular we determine the branching fraction B(D(s)(+)-->K(-)K(+}pi(+))=(5.50+/-0.23+/-0.16)%, where the uncertainties are statistical and systematic, respectively. We also provide partial branching fractions for kinematic subsets of the K(-)K(+)pi(+) decay mode.
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105
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He Q, Insler J, Muramatsu H, Park CS, Thorndike EH, Yang F, Coan TE, Gao YS, Artuso M, Blusk S, Butt J, Li J, Menaa N, Mountain R, Nisar S, Randrianarivony K, Sia R, Skwarnicki T, Stone S, Wang JC, Zhang K, Bonvicini G, Cinabro D, Dubrovin M, Lincoln A, Asner DM, Edwards KW, Briere RA, Ferguson T, Tatishvili G, Vogel H, Watkins ME, Rosner JL, Adam NE, Alexander JP, Cassel DG, Duboscq JE, Ehrlich R, Fields L, Gibbons L, Gray R, Gray SW, Hartill DL, Heltsley BK, Hertz D, Jones CD, Kandaswamy J, Kreinick DL, Kuznetsov VE, Mahlke-Krüger H, Onyisi PUE, Patterson JR, Peterson D, Pivarski J, Riley D, Ryd A, Sadoff AJ, Schwarthoff H, Shi X, Stroiney S, Sun WM, Wilksen T, Weinberger M, Athar SB, Patel R, Potlia V, Yelton J, Rubin P, Cawlfield C, Eisenstein BI, Karliner I, Kim D, Lowrey N, Naik P, Selen M, White EJ, Wiss J, Mitchell RE, Shepherd MR, Besson D, Pedlar TK, Cronin-Hennessy D, Gao KY, Hietala J, Kubota Y, Klein T, Lang BW, Poling R, Scott AW, Smith A, Zweber P, Dobbs S, Metreveli Z, Seth KK, Tomaradze A, Ernst J, Ecklund KM, Severini H, Love W, Savinov V, Aquines O, Li Z, Lopez A, Mehrabyan S, Mendez H, Ramirez J, Huang GS, Miller DH, Pavlunin V, Sanghi B, Shipsey IPJ, Xin B, Adams GS, Anderson M, Cummings JP, Danko I, Hu D, Moziak B, Napolitano J. Comparison of D--> KS0 pi and D--> KL0 pi decay rates. PHYSICAL REVIEW LETTERS 2008; 100:091801. [PMID: 18352696 DOI: 10.1103/physrevlett.100.091801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2007] [Indexed: 05/26/2023]
Abstract
We present measurements of D--> KS0 pi and D--> KL0 pi branching fractions using 281 pb(-1) of psi(3770) data at the CLEO-c experiment. We find that B(D0--> KS0 pi 0) is larger than B(D0--> KL0 pi 0), with an asymmetry of R(D0)=0.108+/-0.025+/-0.024. For B(D+--> KS0 pi+) and B(D+--> KL0 pi+), we observe no measurable difference; the asymmetry is R(D+)=0.022+/-0.016+/-0.018. The D0 asymmetry is consistent with the value based on the U-spin prediction A(D0--> K0 pi 0)/A(D0--> K0 pi 0)=-tan2 theta C, where theta C is the Cabibbo angle.
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106
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Kim KM, Park CS, Kim TB, Cho YS, Moon HB. A variant of idiopathic angioedema presenting as persistent facial swelling over 1 year. Allergy 2008; 63:378-9. [PMID: 18269682 DOI: 10.1111/j.1398-9995.2007.01592.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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107
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Kim MS, Ryu JA, Park CS, Lee EJ, Park NH, Oh HE, Jeong J. Amyloidosis of the mesentery and small intestine presenting as a mesenteric haematoma. Br J Radiol 2008; 81:e1-3. [PMID: 18079343 DOI: 10.1259/bjr/13509947] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Amyloidosis involving the mesentery is very rare, and its radiological appearance has been poorly documented. To our knowledge, this is the first case of amyloidosis involving the mesentery being presented as a mesenteric haematoma.
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108
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Yu SL, Chung HJ, Sang BC, Park CS, Lee JH, Yoon DH, Lee SH, Choi KD. Identification of differentially expressed genes in distinct skeletal muscles in cattle using cDNA microarray. Anim Biotechnol 2008; 18:275-85. [PMID: 17934901 DOI: 10.1080/10495390701413391] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The 788-gene microarray was manufactured using selected elements from three different cDNA libraries in order to identify molecular processes that determine phenotypic characteristics between loin (M. longissimus thoracis) and round (M. semimembranosus) muscles. Microarray analyses identified 24 differentially expressed genes between the two muscles investigated. Five of the genes were verified by quantitative RT-PCR and three of them were mapped on bovine chromosomes using 5,000 rad bovine radiation hybrid (RH) panel. The map locations indicated that they were mapped in the same chromosomal regions where IMF and growth QTLs were located, suggesting that they are most possible positional candidate genes for the traits.
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109
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Cong PQ, Kim ES, Song ES, Yi YJ, Park CS. Effects of fusion/activation methods on development of embryos produced by nuclear transfer of porcine fetal fibroblast. Anim Reprod Sci 2008; 103:304-11. [PMID: 17215095 DOI: 10.1016/j.anireprosci.2006.12.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2006] [Revised: 12/05/2006] [Accepted: 12/06/2006] [Indexed: 11/27/2022]
Abstract
The present studies were carried out to investigate the effects of intensity of dc pulse, number of dc pulse and equilibration before fusion/activation on developmental ability of porcine embryos derived from nuclear transfer. In experiment 1, different fusion/activation intensity (two dc pulses of 0.4, 0.8, 1.2, 1.6 and 2.0 kV/cm for 30 micros, respectively) was carried out to investigate development of embryos. In experiment 2, the reconstructed oocytes were fused and activated with one, two or three dc pulses of 1.2 kV/cm for 30 micros. In experiment 3, reconstructed oocytes were equilibrated in TCM-199 medium for 0-6 h, respectively, and fused/activated with one dc pulse of 1.2 kV/cm for 30 micros. The reconstructed embryos were cultured in PZM-3 medium containing 0.3% BSA. When oocytes were fused with donor cell by two dc pulses of 0.4 kV/cm for 30 micros, the rates of cleavage and blastocyst formation were significantly lower (32.9% and 2.5%) than those of fused by 0.8 kV/cm (59.0% and 17.4%) or 1.2 kV/cm (63.3% and 18.4%), respectively. One dc pulse of 1.2 kV/cm for 30 micros was enough to fuse and activate embryos to develop to blastocyst (24.8%). Equilibration for 2-3 h in TCM-199 before fusion/activation was beneficial for improving the developmental ability of embryos produced by nuclear transfer (25.6-23.3% at blastocysts).
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110
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Adams GS, Anderson M, Cummings JP, Danko I, Hu D, Moziak B, Napolitano J, He Q, Insler J, Muramatsu H, Park CS, Thorndike EH, Yang F, Artuso M, Blusk S, Khalil S, Li J, Menaa N, Mountain R, Nisar S, Randrianarivony K, Sia R, Skwarnicki T, Stone S, Wang JC, Bonvicini G, Cinabro D, Dubrovin M, Lincoln A, Asner DM, Edwards KW, Naik P, Briere RA, Ferguson T, Tatishvili G, Vogel H, Watkins ME, Rosner JL, Adam NE, Alexander JP, Cassel DG, Duboscq JE, Ehrlich R, Fields L, Gibbons L, Gray R, Gray SW, Hartill DL, Heltsley BK, Hertz D, Jones CD, Kandaswamy J, Kreinick DL, Kuznetsov VE, Mahlke-Krüger H, Mohapatra D, Onyisi PUE, Patterson JR, Peterson D, Riley D, Ryd A, Sadoff AJ, Shi X, Stroiney S, Sun WM, Wilksen T, Athar SB, Patel R, Yelton J, Rubin P, Eisenstein BI, Karliner I, Lowrey N, Selen M, White EJ, Wiss J, Mitchell RE, Shepherd MR, Besson D, Pedlar TK, Cronin-Hennessy D, Gao KY, Hietala J, Kubota Y, Klein T, Lang BW, Poling R, Scott AW, Zweber P, Dobbs S, Metreveli Z, Seth KK, Tomaradze A, Ernst J, Ecklund KM, Severini H, Love W, Savinov V, Lopez A, Mehrabyan S, Mendez H, Ramirez J, Ge JY, Miller DH, Sanghi B, Shipsey IPJ, Xin B. Suppressed decays of D(s)(+) mesons to two pseudoscalar mesons. PHYSICAL REVIEW LETTERS 2007; 99:191805. [PMID: 18233066 DOI: 10.1103/physrevlett.99.191805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2007] [Indexed: 05/25/2023]
Abstract
Using data collected near the D{s}{*+}D{s}{-} peak production energy E_{cm}=4170 MeV by the CLEO-c detector, we study the decays of D{s}{+} mesons to two pseudoscalar mesons. We report on searches for the singly Cabibbo-suppressed D{s}{+} decay modes K{+}eta, K{+}eta', pi{+}K{S}{0}, K{+}pi{0}, and the isospin-forbidden decay mode D{s}{+}-->pi{+}pi{0}. We normalize with respect to the Cabibbo-favored D{s}{+} modes pi{+}eta, pi{+}eta', and K{+}K{S}{0}, and obtain ratios of branching fractions: B(D{s}{+}-->K{+}eta)/B(D{s}{+}-->pi{+}eta)=(8.9+/-1.5+/-0.4)%, B(D{s}{+}-->K{+}eta')/B(D{s}{+}-->pi{+}eta')=(4.2+/-1.3+/-0.3)%, B(D{s}{+}-->pi{+}K{S}{0})/B(D{s}{+}-->K{+}K{S}{0})=(8.2+/-0.9+/-0.2)%, B(D{s}{+}-->K{+}pi{0})/B(D{s}{+}-->K{+}K{S}{0})=(5.5+/-1.3+/-0.7)%, and B(D{s}{+}-->pi{+}pi{0})/B(D{s}{+}-->K{+}K{S}{0})<4.1% at 90% C.L., where the uncertainties are statistical and systematic, respectively.
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111
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Artuso M, Blusk S, Butt J, Li J, Menaa N, Mountain R, Nisar S, Randrianarivony K, Sia R, Skwarnicki T, Stone S, Wang JC, Zhang K, Bonvicini G, Cinabro D, Dubrovin M, Lincoln A, Asner DM, Edwards KW, Naik P, Briere RA, Ferguson T, Tatishvili G, Vogel H, Watkins ME, Rosner JL, Adam NE, Alexander JP, Cassel DG, Duboscq JE, Ehrlich R, Fields L, Galik RS, Gibbons L, Gray R, Gray SW, Hartill DL, Heltsley BK, Hertz D, Jones CD, Kandaswamy J, Kreinick DL, Kuznetsov VE, Mahlke-Krüger H, Mohapatra D, Onyisi PUE, Patterson JR, Peterson D, Pivarski J, Riley D, Ryd A, Sadoff AJ, Schwarthoff H, Shi X, Stroiney S, Sun WM, Wilksen T, Athar SB, Patel R, Potlia V, Yelton J, Rubin P, Cawlfield C, Eisenstein BI, Karliner I, Kim D, Lowrey N, Selen M, White EJ, Wiss J, Mitchell RE, Shepherd MR, Besson D, Pedlar TK, Cronin-Hennessy D, Gao KY, Hietala J, Kubota Y, Klein T, Lang BW, Poling R, Scott AW, Smith A, Zweber P, Dobbs S, Metreveli Z, Seth KK, Tomaradze A, Ernst J, Ecklund KM, Severini H, Love W, Savinov V, Aquines O, Lopez A, Mehrabyan S, Mendez H, Ramirez J, Huang GS, Miller DH, Pavlunin V, Sanghi B, Shipsey IPJ, Xin B, Adams GS, Anderson M, Cummings JP, Danko I, Hu D, Moziak B, Napolitano J, He Q, Insler J, Muramatsu H, Park CS, Thorndike EH, Yang F. Evidence for the decay D0-->K(-)pi(+)pi(-)e(+)nu(e). PHYSICAL REVIEW LETTERS 2007; 99:191801. [PMID: 18233062 DOI: 10.1103/physrevlett.99.191801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2007] [Indexed: 05/25/2023]
Abstract
Using a 281 pb{-1} data sample collected at the psi(3770) with the CLEO-c detector, we present the first absolute branching fraction measurement of the decay D0-->K(-)pi(+)pi(-)e(+)nu(e) at a statistical significance of about 4.0 standard deviations. We find 10 candidates consistent with the decay D0-->K(-)pi(+)pi(-)e(+)nu(e). The probability that a background fluctuation accounts for this signal is less than 4.1 x 10{-5}. We find B(D0-->K(-)pi(+)pi(-)e(+)nu(e)) = [2.8{-1.1}{+1.4}(stat)+/-0.3(syst)]x10{-4}. By restricting the invariant mass of the hadronic system to be consistent with K1(1270), we obtain the product of branching fractions B(D{0}-->K{1}{-}(1270)e{+}nu{e})xB(K1-(1270)-->K{-}pi{+}pi{-})=[2.5{-1.0}{+1.3}(stat)+/-0.2(syst)]x10{-4}. Using B(K1-(1270)-->K{-}pi{+}pi{-})=(33+/-3)%, we obtain B(D{0}-->K{1}{-}(1270)e{+}nu{e})=[7.6{-3.0}{+4.1}(stat)+/-0.6(syst)+/-0.7]x10{-4}. The last error accounts for the uncertainties in the measured K1-(1270)-->K{-}pi{+}pi{-} branching fractions.
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112
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Park CS, Elgersma Y, Grant SGN, Morrison JH. alpha-Isoform of calcium-calmodulin-dependent protein kinase II and postsynaptic density protein 95 differentially regulate synaptic expression of NR2A- and NR2B-containing N-methyl-d-aspartate receptors in hippocampus. Neuroscience 2007; 151:43-55. [PMID: 18082335 DOI: 10.1016/j.neuroscience.2007.09.075] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2007] [Revised: 08/10/2007] [Accepted: 09/18/2007] [Indexed: 10/22/2022]
Abstract
N-methyl-d-aspartate receptors (NMDARs) are critical determinants of bidirectional synaptic plasticity, however, studies of NMDAR function have been based primarily on pharmacological and electrophysiological manipulations, and it is still debated whether there are subunit-selective forms of long-term potentiation (LTP) and long-term depression (LTD). Here we provide ultrastructural analyses of axospinous synapses in cornu ammonis field 1 of hippocampus (CA1) stratum radiatum of transgenic mice with mutations to two key underlying postsynaptic density (PSD) proteins, postsynaptic density protein 95 (PSD-95) and the alpha-isoform of calcium-calmodulin-dependent protein kinase II (alphaCaMKII). Distribution profiles of synaptic proteins in these mice reveal very different patterns of subunit-specific NMDAR localization, which may be related to the divergent phenotypes of the two mutants. In PSD-95, Dlg, ZO-1/Dlg-homologous region (PDZ) 3-truncated mutant mice in which LTD could not be induced but LTP was found to be enhanced, we found a subtle, yet preferential displacement of synaptic N-methyl-d-aspartate receptor subunit 2B (NR2B) subunits in lateral regions of the synapse without affecting changes in the localization of N-methyl-d-aspartate receptor subunit 2A (NR2A) subunits. In persistent inhibitory alphaCaMKII Thr305 substituted with Asp in alpha-isoform of calcium-calmodulin kinase II (T305D) mutant mice with severely impaired LTP but stable LTD expression, we found a selective reduction of NR2A subunits at both the synapse and throughout the cytoplasm of the spine without any effect on the NR2B subunit. In an experiment of mutual exclusivity, neither PSD-95 nor alphaCaMKII localization was found to be affected by mutations to the corresponding PSD protein suggesting that they are functionally independent of the other in the regulation of NR2A- and NR2B-containing NMDARs preceding synaptic activity. Consequently, there may exist at least two distinct PSD-95 and alphaCaMKII-specific NMDAR complexes involved in mediating LTP and LTD through opposing signal transduction pathways in synapses of the hippocampus. The contrasting phenotypes of the PSD-95 and alphaCaMKII mutant mice further establish the prospect of an independent and, possibly, competing mechanism for the regulation of NMDAR-dependent bidirectional synaptic plasticity.
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Lopez A, Mehrabyan S, Mendez H, Ramirez J, Ge JY, Miller DH, Sanghi B, Shipsey IPJ, Xin B, Adams GS, Anderson M, Cummings JP, Danko I, Hu D, Moziak B, Napolitano J, He Q, Insler J, Muramatsu H, Park CS, Thorndike EH, Yang F, Artuso M, Blusk S, Khalil S, Li J, Menaa N, Mountain R, Nisar S, Randrianarivony K, Sia R, Skwarnicki T, Stone S, Wang JC, Bonvicini G, Cinabro D, Dubrovin M, Lincoln A, Asner DM, Edwards KW, Naik P, Briere RA, Ferguson T, Tatishvili G, Vogel H, Watkins ME, Rosner JL, Adam NE, Alexander JP, Cassel DG, Duboscq JE, Ehrlich R, Fields L, Galik RS, Gibbons L, Gray R, Gray SW, Hartill DL, Heltsley BK, Hertz D, Jones CD, Kandaswamy J, Kreinick DL, Kuznetsov VE, Mahlke-Krüger H, Mohapatra D, Onyisi PUE, Patterson JR, Peterson D, Riley D, Ryd A, Sadoff AJ, Shi X, Stroiney S, Sun WM, Wilksen T, Athar SB, Patel R, Yelton J, Rubin P, Eisenstein BI, Karliner I, Lowrey N, Selen M, White EJ, Wiss J, Mitchell RE, Shepherd MR, Besson D, Pedlar TK, Cronin-Hennessy D, Gao KY, Hietala J, Kubota Y, Klein T, Lang BW, Poling R, Scott AW, Zweber P, Dobbs S, Metreveli Z, Seth KK, Tomaradze A, Ernst J, Ecklund KM, Severini H, Love W, Savinov V. Measurement of prominent eta-decay branching fractions. PHYSICAL REVIEW LETTERS 2007; 99:122001. [PMID: 17930497 DOI: 10.1103/physrevlett.99.122001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2007] [Indexed: 05/25/2023]
Abstract
The decay psi(2S) --> etaJ/psi is used to measure, for the first time, all prominent eta-meson branching fractions with the same experiment in the same dataset, thereby providing a consistent treatment of systematics across branching fractions. We present results for eta decays to gamma gamma, pi(+)pi(-)pi(0), 3pi(0), pi(+)pi(-)gamma and e(+)e(-)gamma, accounting for 99.9% of all eta decays. The precision of several of the branching fractions and their ratios is improved. Two channels, pi(+)pi(-)gamma and e(+)e(-)gamma, show results that differ at the level of three standard deviations from those previously determined.
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Miller DH, Sanghi B, Shipsey IPJ, Xin B, Adams GS, Anderson M, Cummings JP, Danko I, Ge JY, Hu D, Moziak B, Napolitano J, He Q, Insler J, Muramatsu H, Park CS, Thorndike EH, Yang F, Artuso M, Blusk S, Khalil S, Li J, Menaa N, Mountain R, Nisar S, Randrianarivony K, Sia R, Skwarnicki T, Stone S, Wang JC, Bonvicini G, Cinabro D, Dubrovin M, Lincoln A, Asner DM, Edwards KW, Naik P, Briere RA, Ferguson T, Tatishvili G, Vogel H, Watkins ME, Rosner JL, Adam NE, Alexander JP, Cassel DG, Duboscq JE, Ehrlich R, Fields L, Gibbons L, Gray R, Gray SW, Hartill DL, Heltsley BK, Hertz D, Jones CD, Kandaswamy J, Kreinick DL, Kuznetsov VE, Mahlke-Krüger H, Mohapatra D, Onyisi PUE, Patterson JR, Peterson D, Riley D, Ryd A, Sadoff AJ, Shi X, Stroiney S, Sun WM, Wilksen T, Athar SB, Patel R, Yelton J, Rubin P, Eisenstein BI, Karliner I, Lowrey N, Selen M, White EJ, Wiss J, Mitchell RE, Shepherd MR, Besson D, Pedlar TK, Cronin-Hennessy D, Gao KY, Hietala J, Kubota Y, Klein T, Lang BW, Poling R, Scott AW, Zweber P, Dobbs S, Metreveli Z, Seth KK, Tomaradze A, Ernst J, Ecklund KM, Severini H, Love W, Savinov V, Lopez A, Mehrabyan S, Mendez H, Ramirez J. Measurement of the eta-meson mass using psi(2S) --> etaJ/psi. PHYSICAL REVIEW LETTERS 2007; 99:122002. [PMID: 17930498 DOI: 10.1103/physrevlett.99.122002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2007] [Indexed: 05/25/2023]
Abstract
We measure the mass of the eta meson using psi(2S) --> etaJ/psi events acquired with the CLEO-c detector operating at the CESR e(+)e(-) collider. Using the four decay modes eta --> gamma gamma, 3pi(0), pi(+)pi(-)pi(0), and pi(+)pi(-)gamma, we find M(eta) = 547.785 +/- 0.017 +/- 0.057 MeV, in which the first uncertainty is statistical and the second systematic. This result has an uncertainty comparable to the two most precise previous measurements and is consistent with that of NA48, but is inconsistent at the level of 6.5 sigma with the much smaller mass obtained by GEM.
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Park NH, Park SI, Park CS, Lee EJ, Kim MS, Ryu JA, Bae JM. Ultrasonographic findings of small bowel intussusception, focusing on differentiation from ileocolic intussusception. Br J Radiol 2007; 80:798-802. [PMID: 17875595 DOI: 10.1259/bjr/61246651] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The purpose of this study was to evaluate the typical ultrasonographic findings of transient small bowel intussusception (SBI) and to differentiate it from ileocolic intussusception (ICI) in paediatrics. 22 transient SBI (male:female = 13:9, age: 7-132 months (mean 38 months)) and 27 ICI (male:female = 19:8, age: 1-60 months (mean 13 months)) patients diagnosed on ultrasonography were retrospectively evaluated. The findings of location, diameter, thickness of outer rim, and inclusion of mesenteric lymph nodes within intussuscipiens were compared. In the transient SBI, the head of intussusception was located in the right lower quadrant (RLQ) in 11 (50%), the right upper quadrant (RUQ) in 2 (9.1%) and the periumbilical area in 9 (40.9%) cases. The anteroposterior (AP) diameter ranged from 0.84-2.4 cm (mean 1.38 cm), and thickness of outer rim ranged from 0.10-0.34 cm (mean 0.26 cm). No mesenteric lymph nodes were contained within the intussuscipiens. In the ICI, the head was located in the RUQ in 17 (63%), the epigastrium in 7 (25.9%) and the left upper quadrant in 3 (11.1%) cases. The AP diameter ranged from 1.89-3.32 cm (mean 2.53 cm), and the thickness of the outer rim ranged from 0.30-0.86 cm (mean 0.53 cm). Mesenteric lymph nodes were contained within the intussuscipiens in 26 (96.3%) cases. In conclusion, when compared with ICI, the transient SBI occurs predominantly in the RLQ or periumbilical region, has a smaller AP diameter, a thinner outer rim, and dose not contain mesenteric lymph nodes.
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Park NH, Park CS, Lee EJ, Kim MS, Ryu JA, Bae JM, Song JS. Ultrasonographic findings identifying the faecal-impacted appendix: differential findings with acute appendicitis. Br J Radiol 2007; 80:872-7. [PMID: 17875592 DOI: 10.1259/bjr/80553348] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
The aim of this study was to identify ultrasonographic findings that show the normal faecal-impacted appendix, in order to avoid unnecessary surgery via a misdiagnosis of acute appendicitis. Of 160 patients who underwent ultrasonography between January 2004 and July 2005 for right lower quadrant pain, 22 cases (including 7 cases confirmed pathologically and 15 confirmed clinically and on follow-up ultrasonography) were diagnosed as a normal faecal-impacted appendix. The criteria that we used to distinguish a faecal-impacted appendix from acute appendicitis include preservation of the normal wall layering of the appendix, maximum mural thickness, presence of peri-appendiceal fat infiltration and increased blood flow in the appendiceal wall. The maximum measured outer diameter of a normal faecal-impacted appendix was 0.54-1.03 cm, with a mean diameter of 0.68 cm. The maximum mural thickness ranged from 0.08 cm to 0.26 cm, with a mean thickness of 0.15 cm. The normal wall layers of the appendix were preserved and no evidence was seen of peri-appendiceal fat infiltration in any case. No demonstrably increased blood flow in the appendiceal wall was observed. In conclusion, faecal impaction increases the outer transverse diameter of the normal appendix, frequently leading to a misdiagnosis of acute appendicitis. Recognition of preservation of the normal layering of the appendiceal wall, smaller maximal outer diameter, thinner maximal mural thickness, the absence of peri-appendiceal mesenteric infiltration and no demonstrably increased blood flow in the appendiceal wall should help to prevent unnecessary surgery.
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Artuso M, Blusk S, Butt J, Khalil S, Li J, Menaa N, Mountain R, Nisar S, Randrianarivony K, Sia R, Skwarnicki T, Stone S, Wang JC, Bonvicini G, Cinabro D, Dubrovin M, Lincoln A, Asner DM, Edwards KW, Naik P, Briere RA, Ferguson T, Tatishvili G, Vogel H, Watkins ME, Rosner JL, Adam NE, Alexander JP, Cassel DG, Duboscq JE, Ehrlich R, Fields L, Gibbons L, Gray R, Gray SW, Hartill DL, Heltsley BK, Hertz D, Jones CD, Kandaswamy J, Kreinick DL, Kuznetsov VE, Mahlke-Krüger H, Mohapatra D, Onyisi PUE, Patterson JR, Peterson D, Pivarski J, Riley D, Ryd A, Sadoff AJ, Schwarthoff H, Shi X, Stroiney S, Sun WM, Wilksen T, Athar SB, Patel R, Yelton J, Rubin P, Cawlfield C, Eisenstein BI, Karliner I, Kim D, Lowrey N, Selen M, White EJ, Wiss J, Mitchell RE, Shepherd MR, Besson D, Pedlar TK, Cronin-Hennessy D, Gao KY, Hietala J, Kubota Y, Klein T, Lang BW, Poling R, Scott AW, Smith A, Zweber P, Dobbs S, Metreveli Z, Seth KK, Tomaradze A, Ernst J, Ecklund KM, Severini H, Love W, Savinov V, Aquines O, Lopez A, Mehrabyan S, Mendez H, Ramirez J, Huang GS, Miller DH, Pavlunin V, Sanghi B, Shipsey IPJ, Xin B, Adams GS, Anderson M, Cummings JP, Danko I, Hu D, Moziak B, Napolitano J, He Q, Insler J, Muramatsu H, Park CS, Thorndike EH, Yang F. Measurement of the decay constant f(Ds+) using D(s+)-->l+ nu. PHYSICAL REVIEW LETTERS 2007; 99:071802. [PMID: 17930886 DOI: 10.1103/physrevlett.99.071802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2007] [Indexed: 05/25/2023]
Abstract
We measure the decay constant f(Ds+) using the D(s+)-->l+ nu channel, where the l+ designates either a mu+ or a tau+, when the tau+ -->pi+ nu. Using both measurements we find f(Ds+)=274+/-13+/-7 MeV. Combining with our previous determination of f(D+), we compute the ratio f(Ds+)/f(D+)=1.23+/-0.11+/-0.04. We compare with theoretical estimates.
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Adam NE, Alexander JP, Berkelman K, Cassel DG, Duboscq JE, Ehrlich R, Fields L, Gibbons L, Gray R, Gray SW, Hartill DL, Heltsley BK, Hertz D, Jones CD, Kandaswamy J, Kreinick DL, Kuznetsov VE, Mahlke-Krüger H, Meyer TO, Onyisi PUE, Patterson JR, Peterson D, Pivarski J, Riley D, Ryd A, Sadoff AJ, Schwarthoff H, Shi X, Stroiney S, Sun WM, Wilksen T, Weinberger M, Athar SB, Patel R, Potlia V, Yelton J, Rubin P, Cawlfield C, Eisenstein BI, Karliner I, Kim D, Lowrey N, Naik P, Selen M, White EJ, Wiss J, Mitchell RE, Shepherd MR, Besson D, Pedlar TK, Cronin-Hennessy D, Gao KY, Hietala J, Kubota Y, Klein T, Lang BW, Poling R, Scott AW, Smith A, Zweber P, Dobbs S, Metreveli Z, Seth KK, Tomaradze A, Ernst J, Ecklund KM, Severini H, Love W, Savinov V, Aquines O, Li Z, Lopez A, Mehrabyan S, Mendez H, Ramirez J, Huang GS, Miller DH, Pavlunin V, Sanghi B, Shipsey IPJ, Xin B, Adams GS, Anderson M, Cummings JP, Danko I, Hu D, Moziak B, Napolitano J, He Q, Insler J, Muramatsu H, Park CS, Thorndike EH, Yang F, Coan TE, Gao YS, Artuso M, Blusk S, Butt J, Li J, Menaa N, Mountain R, Nisar S, Randrianarivony K, Sia R, Skwarnicki T, Stone S, Wang JC, Zhang K, Bonvicini G, Cinabro D, Dubrovin M, Lincoln A, Asner DM, Edwards KW, Briere RA, Ferguson T, Tatishvili G, Vogel H, Watkins ME, Rosner JL. Study of exclusive charmless semileptonic B decays and |Vub|. PHYSICAL REVIEW LETTERS 2007; 99:041802. [PMID: 17678351 DOI: 10.1103/physrevlett.99.041802] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2007] [Indexed: 05/16/2023]
Abstract
We study semileptonic B decay to the exclusive charmless states pi, rho/omega, eta, and eta;{'} using the 16 fb(-1) CLEO Upsilon(4S) data sample. We find B(B0-->pi-l+nu)=(1.37+/-0.15stat+/-0.11sys)x10(-4) and B(B0-->rho-l+nu)=(2.93+/-0.37stat+/-0.37sys)x10(-4) and find evidence for B+-->eta'l+nu, with B(B+-->eta'l+nu)=(2.66+/-0.80stat+/-0.56sys)x10(-4). From our B-->pilnu rate for q2>16 GeV2 and lattice QCD, we find |Vub|=(3.6+/0.4stat+/0.2syst-0.4thy+0.6)x10(-3) [corrected]
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Quan Y, Naruse K, Kim BC, Choi SM, Han RX, Park CS, Jin DI. IN VITRO DEVELOPMENT OF INTERSPECIES NUCLEAR TRANSFER USING PORCINE OOCYTES WITH GOAT AND MOUSE SOMATIC CELLS. Biol Reprod 2007. [DOI: 10.1093/biolreprod/77.s1.237b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Kim BC, Naruse K, Quan YS, Kim HR, Chang SM, Han RX, Park CS, Jin DI. IN VITRO DEVELOPMENT OF PORCINE PARTHENOGENETIC AND NUCLEAR TRANSFER EMBRYOS FOLLOWING DIFFERENT COMBINED WITH CYCLOHEXMIDE AND ELECTRICAL PULSE TREATMENTS. Biol Reprod 2007. [DOI: 10.1093/biolreprod/77.s1.132a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Naruse K, Quan YS, Kim BC, Lee JH, Park CS, Jin DI. Brief exposure to cycloheximide prior to electrical activation improves in vitro blastocyst development of porcine parthenogenetic and reconstructed embryos. Theriogenology 2007; 68:709-16. [PMID: 17604096 DOI: 10.1016/j.theriogenology.2007.05.065] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2007] [Accepted: 05/31/2007] [Indexed: 11/21/2022]
Abstract
To investigate the effects of cycloheximide exposure before electrical activation of in vitro-matured porcine oocytes on the subsequent development of parthenogenetic embryos, cumulus-free mature oocytes were exposed to NCSU-23 medium containing cycloheximide (10 microg/mL) for 0, 5, 10, 20, 30 and 60 min, activated by electrical pulse treatment (1.5 kV/cm, 100 micros) and then cultured in PZM-3 for 7 days. To evaluate the effects of cycloheximide on the activation of nuclear transfer embryos, reconstructed embryos were electrically activated by two DC pulses (1.2 kV/cm, 30 micros) before or after exposure to cycloheximide. The reconstructed embryos were allocated into four groups: electrical pulse treatment alone (Ele); exposure to cycloheximide for 10 min followed by electrical activation (CHX+Ele); electrical activation followed by exposure to cycloheximide for 6h (Ele+CHX); exposure to cycloheximide for 10 min, followed by electrical activation and a further exposure to cycloheximide for 6h (CHX+Ele+CHX). The activated reconstructed embryos were cultured in PZM-3 for 6 days. Oocytes treated with 10 min exposure to cycloheximide followed by electrical activation had a significantly higher percentage of blastocyst formation compared to control oocytes and oocytes exposed for > or =30 min. In the reconstructed embryos, the blastocyst development rates of embryos exposed to cycloheximide (CHX+Ele, Ele+CHX and CHX+Ele+CHX) were significantly higher than those of the control group (Ele). Among the cycloheximide-treated groups, the CHX+Ele group had increased development rate and total blastocyst cell number, though these values were not significantly different from those observed in the other cycloheximide-treated groups. To evaluate the quality of NT embryos treated with cycloheximide, apoptosis in blastocysts was analyzed by TUNEL assay. The 10 min exposure to cycloheximide prior to electrical activation significantly reduced cell death compared with longer exposure to cycloheximide after electrical fusion. In conclusion, brief exposure to cycloheximide prior to electrical activation may increase the subsequent blastocyst development rates in porcine parthenogenetic and reconstructed embryos.
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Lee EJ, Kim HJ, Bae JM, Kim JC, Han HJ, Park CS, Park NH, Kim MS, Ryu JA. Relevance of common carotid intima-media thickness and carotid plaque as risk factors for ischemic stroke in patients with type 2 diabetes mellitus. AJNR Am J Neuroradiol 2007; 28:916-9. [PMID: 17494669 PMCID: PMC8134355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
BACKGROUND AND PURPOSE An increase in the common carotid artery intima-media thickness (CCA-IMT) is generally considered an early marker of atherosclerosis. This cross-sectional study assessed the CCA-IMT and plaque score as vascular risk factors in patients with ischemic stroke and type 2 diabetes. MATERIALS AND METHODS Brain MR imaging and carotid ultrasonography were performed in 133 subjects with type 2 diabetes. IMT was measured at both CCAs. Differences in the variables between case and control subjects were compared statistically. To determine the independent factors related to CCA-IMT and plaque score, we performed stepwise multiple regression analysis. RESULTS Sex, current smoking habit, history of hypertension, and high-density lipoprotein (HDL) levels differed significantly between the case and control groups. CCA-IMT and plaque score in patients with diabetes and acute ischemic stroke were significantly greater than in patients with diabetes who were stroke-free. The crude odds ratios suggested that CCA-IMT and plaque score are risk factors of acute ischemic stroke in patients with type 2 diabetes. However, when we adjusted for cerebrovascular risk factors, CCA-IMT and plaque score did not remain significantly associated with acute ischemic stroke. CONCLUSION Increased CCA-IMT and plaque score are associated with acute ischemic stroke in patients with type 2 diabetes. The higher CCA-IMT and plaque score found in ischemic stroke in patients with type 2 diabetes seem to be induced by cerebrovascular risk factors. Therefore, to prevent ischemic stroke in patients with type 2 diabetes, strict control of hyperglycemia, hypertension, smoking, and low HDL, together with monitoring of CCA-IMT and carotid plaque, may be important.
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Kwak JY, Kim EK, Hong SW, Oh KK, Kim MJ, Park CS, Cheong WY. Diffuse sclerosing variant of papillary carcinoma of the thyroid: ultrasound features with histopathological correlation. Clin Radiol 2007; 62:382-6. [PMID: 17331834 DOI: 10.1016/j.crad.2006.11.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2006] [Revised: 11/16/2006] [Accepted: 11/24/2006] [Indexed: 10/23/2022]
Abstract
AIM To evaluate the ultrasound (US) features of the diffuse sclerosing variant of papillary carcinoma (DSVPC) of the thyroid, with histopathological correlations. MATERIALS AND METHODS The US and histopathological findings of six patients with surgically proven DSVPC of the thyroid were retrospectively assessed. RESULTS Most of cases showed diffuse, scattered microcalcifications with or without associated masses and underlying heterogeneous hypoechogenicity at the site of the DSVPC in the thyroid. At ultrasound, scattered microcalcifications and heterogeneous hypoechogenicity seen in the DSVPC correlated to psammoma bodies and lymphocytic infiltration at histopathological review. CONCLUSION DSVPC of the thyroid usually manifested as diffuse scattered microcalcifications and associated suspicious mass on ultrasound. These findings are not specific for the DSVPC of the thyroid. However, in relatively young patients with suspicious masses associated with underlying diffuse scattered microcalcifications on US, the possibility of DSVPC should be included in differential diagnosis.
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Cawlfield C, Eisenstein BI, Karliner I, Kim D, Lowrey N, Naik P, Selen M, White EJ, Wiss J, Mitchell RE, Shepherd MR, Besson D, Pedlar TK, Cronin-Hennessy D, Gao KY, Hietala J, Kubota Y, Klein T, Lang BW, Poling R, Scott AW, Smith A, Zweber P, Dobbs S, Metreveli Z, Seth KK, Tomaradze A, Ernst J, Ecklund KM, Severini H, Love W, Savinov V, Aquines O, Li Z, Lopez A, Mehrabyan S, Mendez H, Ramirez J, Huang GS, Miller DH, Pavlunin V, Sanghi B, Shipsey IPJ, Xin B, Adams GS, Anderson M, Cummings JP, Danko I, Hu D, Moziak B, Napolitano J, He Q, Insler J, Muramatsu H, Park CS, Thorndike EH, Yang F, Coan TE, Gao YS, Artuso M, Blusk S, Butt J, Li J, Menaa N, Mountain R, Nisar S, Randrianarivony K, Sia R, Skwarnicki T, Stone S, Wang JC, Zhang K, Bonvicini G, Cinabro D, Dubrovin M, Lincoln A, Asner DM, Edwards KW, Briere RA, Ferguson T, Tatishvili G, Vogel H, Watkins ME, Rosner JL, Adam NE, Alexander JP, Cassel DG, Duboscq JE, Ehrlich R, Fields L, Galik RS, Gibbons L, Gray R, Gray SW, Hartill DL, Heltsley BK, Hertz D, Jones CD, Kandaswamy J, Kreinick DL, Kuznetsov VE, Mahlke-Krüger H, Onyisi PUE, Patterson JR, Peterson D, Pivarski J, Riley D, Ryd A, Sadoff AJ, Schwarthoff H, Shi X, Stroiney S, Sun WM, Wilksen T, Athar SB, Patel R, Potlia V, Yelton J, Rubin P. Precision determination of the D0 mass. PHYSICAL REVIEW LETTERS 2007; 98:092002. [PMID: 17359150 DOI: 10.1103/physrevlett.98.092002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2007] [Indexed: 05/14/2023]
Abstract
A precision measurement of the D0 meson mass has been made using approximately 281 pb(-1) of e+e- annihilation data taken with the CLEO-c detector at the psi(3770) resonance. The exclusive decay D0-->K_{S}phi has been used to obtain M(D0)=1864.847+/-0.150(stat)+/-0.095(syst) MeV. This corresponds to M(D0D*0)=3871.81+/-0.36 MeV, and leads to a well-constrained determination of the binding energy of the proposed D0D*0 molecule X(3872), as Eb=0.6+/-0.6 MeV.
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Besson D, Pedlar TK, Cronin-Hennessy D, Gao KY, Gong DT, Hietala J, Kubota Y, Klein T, Lang BW, Poling R, Scott AW, Smith A, Zweber P, Dobbs S, Metreveli Z, Seth KK, Tomaradze A, Ernst J, Severini H, Dytman SA, Love W, Savinov V, Aquines O, Li Z, Lopez A, Mehrabyan S, Mendez H, Ramirez J, Huang GS, Miller DH, Pavlunin V, Sanghi B, Shipsey IPJ, Xin B, Adams GS, Anderson M, Cummings JP, Danko I, Napolitano J, He Q, Insler J, Muramatsu H, Park CS, Thorndike EH, Yang F, Coan TE, Gao YS, Liu F, Artuso M, Blusk S, Butt J, Horwitz N, Li J, Menaa N, Mountain R, Nisar S, Randrianarivony K, Redjimi R, Sia R, Skwarnicki T, Stone S, Wang JC, Zhang K, Csorna SE, Bonvicini G, Cinabro D, Dubrovin M, Lincoln A, Asner DM, Edwards KW, Briere RA, Brock I, Chen J, Ferguson T, Tatishvili G, Vogel H, Watkins ME, Rosner JL, Adam NE, Alexander JP, Berkelman K, Cassel DG, Duboscq JE, Ecklund KM, Ehrlich R, Fields L, Galik RS, Gibbons L, Gray R, Gray SW, Hartill DL, Heltsley BK, Hertz D, Jones CD, Kandaswamy J, Kreinick DL, Kuznetsov VE, Mahlke-Krüger H, Meyer TO, Onyisi PUE, Patterson JR, Peterson D, Pivarski J, Riley D, Ryd A, Sadoff AJ, Schwarthoff H, Shi X, Stroiney S, Sun WM, Wilksen T, Weinberger M, Athar SB, Patel R, Potlia V, Yelton J, Rubin P, Cawlfield C, Eisenstein BI, Karliner I, Kim D, Lowrey N, Naik P, Sedlack C, Selen M, White EJ, Wiss J, Shepherd MR. Observation of Upsilon(3S)-->tau+tau- and tests of lepton universality in Upsilon decays. PHYSICAL REVIEW LETTERS 2007; 98:052002. [PMID: 17358847 DOI: 10.1103/physrevlett.98.052002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2006] [Indexed: 05/14/2023]
Abstract
Using data collected with the CLEO III detector at the CESR e+e- collider, we report on a first observation of the decay Upsilon(3S)-->tau+tau-, and precisely measure the ratio of branching fractions of Upsilon(nS), n=1, 2, 3, to tau+tau- and mu+mu- final states, finding agreement with expectations from lepton universality. We derive absolute branching fractions for these decays, and also set a limit on the influence of a low mass CP-odd Higgs boson in the decay of the Upsilon(1S).
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