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Barrajon E, Lopez A, Adrover E, Esquerdo G, Llorca C. Influence of single agent paclitaxel (TAX) schedule on the pattern of response and toxicity in patients with advanced breast and lung cancer: A systematic review. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.2124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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327
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Ma Y, Pitson S, Hercus T, Murphy J, Lopez A, Woodcock J. Sphingosine activates protein kinase A type II by a novel cAMP-independent mechanism. J Biol Chem 2005; 280:26011-7. [PMID: 15883165 DOI: 10.1074/jbc.m409081200] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Protein kinase A (PKA) has long been recognized as playing a major role in many regulatory processes in cells through its activation by the ubiquitous second messenger cAMP. We show here a novel mode of activation of PKA type II that is independent of cAMP and is, instead, dependent on sphingosine. PKA type II is specifically activated by sphingosine and its analog, dimethylsphingosine, but not by sphingosine-1-phosphate or other lipids. Like cAMP, sphingosine activates PKA holoenzyme but not the catalytic subunit alone, suggesting that the activation is mediated by the regulatory subunits. However, sphingosine-activated PKA, but not cAMP-activated PKA, is inhibited by phosphatidylserine, suggesting a distinct mechanism of activation. Furthermore, unlike cAMP, sphingosine does not induce the dissociation of PKA holoenzyme into catalytic and regulatory subunits. Modulation of sphingosine levels in vivo results in alteration in basal membrane-associated PKA activity consistent with a direct effect of membrane sphingosine on PKA type II. Importantly, sphingosine-dependent but not cAMP-dependent activation of PKA specifically phosphorylates Ser58 of the multifunctional adapter protein 14-3-3zeta, promoting the conversion of dimeric 14-3-3 to a monomeric state, thus potentially modulating several biological functions. These results define a new mode of PKA activation that is sphingosine-dependent and mechanistically different from the classical cAMP-dependent activation of PKA. Furthermore, they suggest that stimuli that induce sphingosine accumulation and modulate phospholipid content at the cell membrane have the potential to activate PKA, thereby inducing the phosphorylation of distinct substrates and biological activities.
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328
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Chesmore J, Lambert H, Lopez A, Vu K. The Evaluation of Two Different Types of Sequential Culture Media Systems for Human In Vitro Fertilization Using Sister Oocytes. Fertil Steril 2005. [DOI: 10.1016/j.fertnstert.2005.01.080] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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329
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Chang M, Lambert H, Lopez A, Chesmore J, Vu K. A Retrospective Study: Women Aged 40 and Over Benefit From Preimplantation Genetic Diagnosis. Fertil Steril 2005. [DOI: 10.1016/j.fertnstert.2005.01.081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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330
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Mascolo G, Lopez A, Detomaso A, Lovecchio G. Ion chromatography–electrospray mass spectrometry for the identification of low-molecular-weight organic acids during the 2,4-dichlorophenol degradation. J Chromatogr A 2005; 1067:191-6. [PMID: 15844524 DOI: 10.1016/j.chroma.2004.12.058] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
End-product identification of organic pollutants during oxidation water treatments is of environmental concern due to their potential toxicity. In this work the coupling of ion chromatography (IC), equipped with a membrane ion suppressor, and electrospray ionization mass spectrometry (ESI-MS) has been successfully exploited for the identification of novel low molecular weight organic acids formed as final by-products of 2,4-dichloro-phenol (DCP) degradation by Fenton's reagent, an oxidation method widely employed to degrade recalcitrant organic pollutants in industrial wastewater. The IC-ESI-MS analytical set-up not only allowed the detection of known organic acids but also the identification of 13 new low molecular weight organic acids as a result of extensive oxidation of the parent organic pollutant. Some of the novel organic acids were shown to be chlorine containing by-products and, consequently, of environmental concern. The analytical set-up could be used for characterizing the unknown organic carbon fraction arising from oxidation water treatments.
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331
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Di Iaconi C, Ramadori R, Lopez A, Passino R. Hydraulic shear stress calculation in a sequencing Batch biofilm reactor with granular biomass. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2005; 39:889-894. [PMID: 15757355 DOI: 10.1021/es0400483] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
This paper reports the results of an experimental study specifically aimed at developing a simple methodology for calculating hydrodynamic shear forces in a sequencing batch biofilm reactor (SBBR) system with granular biomass. Using such a methodology, the hydrodynamic shear forces are simply calculated by measuring bed porosity and pressure losses. In addition, by applying this methodology an explanation for the biomass evolution from biofilm to granules under aerobic conditions has been provided and the following mechanism has been proposed: (i) formation of a thin biofilm that fully covers the carrier; (ii) increase of biofilm thickness; (iii) break-up of the attached biofilm with release of biofilm particles; (iv) rearrangement of biofilm particles in smooth granules. The hydrodynamic shear forces trend during the start-up period provides an explanatory key for the generation process of granular biomass. In fact, during the first two steps, the SBBR is characterized by rather weak shear forces values (lower than 1 dyn/cm2). Under these weak shear forces, the biofilm grows by increasing its thickness through a porous structure and weak adhesion strengths. Such a continuous increase of biofilm thickness produces an increase of the shear forces with negative effect on biomass stability, causing the detachment of biofilm particles. In turn, such detachment causes a further sharp increase of shear forces (more than 10 times) that promotes the rearrangement of the detached biofilm particles in smooth granules. A correlation between biomass density and hydrodynamic shear forces was observed. In particular, the biomass density linearly increases with the increase of shear stress.
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Artuso M, Boulahouache C, Blusk S, Butt J, Dambasuren E, Dorjkhaidav O, Li J, Menaa N, Mountain R, Muramatsu H, Nandakumar R, Redjimi R, Sia R, Skwarnicki T, Stone S, Wang JC, Zhang K, Csorna SE, Bonvicini G, Cinabro D, Dubrovin M, Bornheim A, Pappas SP, Weinstein AJ, Rosner JL, Briere RA, Chen GP, Ferguson T, Tatishvili G, Vogel H, Watkins ME, Adam NE, Alexander JP, Berkelman K, Cassel DG, Crede V, Duboscq JE, Ecklund KM, Ehrlich R, Fields L, Galik RS, Gibbons L, Gittelman B, Gray R, Gray SW, Hartill DL, Heltsley BK, Hertz D, Hsu L, 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, Shepherd MR, Stroiney S, Sun WM, Thayer JG, Urner D, Wilksen T, Weinberger M, Athar SB, Avery P, Breva-Newell L, Patel R, Potlia V, Stoeck H, Yelton J, Rubin P, Cawlfield C, Eisenstein BI, Gollin GD, Karliner I, Kim D, Lowrey N, Naik P, Sedlack C, Selen M, Thaler JJ, Williams J, Wiss J, Edwards KW, Besson D, Pedlar TK, Cronin-Hennessy D, Gao KY, Gong DT, Kubota Y, Lang BW, Li SZ, Poling R, Scott AW, Smith A, Stepaniak CJ, Dobbs S, Metreveli Z, Seth KK, Tomaradze A, Zweber P, Ernst J, Mahmood AH, Arms K, Gan KK, Severini H, Asner DM, Dytman SA, Love W, Mehrabyan S, Mueller JA, Savinov V, Li Z, Lopez A, Mendez H, Ramirez J, Huang GS, Miller DH, Pavlunin V, Sanghi B, Shibata EI, Shipsey IPJ, Adams GS, Chasse M, Cravey M, Cummings JP, Danko I, Napolitano J, Park CS, Park W, Thayer JB, Thorndike EH, Coan TE, Gao YS, Liu F, Stroynowski R. Photon transitions in Upsilon(2S) and Upsilon(3S) decays. PHYSICAL REVIEW LETTERS 2005; 94:032001. [PMID: 15698251 DOI: 10.1103/physrevlett.94.032001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2004] [Indexed: 05/24/2023]
Abstract
We have studied the inclusive photon spectra in Upsilon(2S) and Upsilon(3S) decays using a large statistics data sample obtained with the CLEO III detector. We present the most precise measurements of electric dipole (E1) photon transition rates and photon energies for Upsilon(2S) --> gammachi(bJ)(1P) and Upsilon(3S) --> gammachi(bJ)(2P) (J = 0, 1, 2). We measure the rate for a rare E1 transition Upsilon(3S) --> gammachi(b0)(1P) for the first time. We also set upper limits on the rates for the hindered magnetic dipole (M1) transitions to the eta(b)(1S) and eta(b)(2S) states.
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Dobbs S, Metreveli Z, Seth KK, Tomaradze A, Zweber P, Ernst J, Mahmood AH, Severini H, Asner DM, Dytman SA, Love W, Mehrabyan S, Mueller JA, Savinov V, Li Z, Lopez A, Mendez H, Ramirez J, Huang GS, Miller DH, Pavlunin V, Sanghi B, Shibata EI, Shipsey IPJ, Adams GS, Chasse M, Cravey M, Cummings JP, Danko I, Napolitano J, Cronin-Hennessy D, Park CS, Park W, Thayer JB, Thorndike EH, Coan TE, Gao YS, Liu F, Artuso M, Boulahouache C, Blusk S, Butt J, Dambasuren E, Dorjkhaidav O, Menaa N, Mountain R, Muramatsu H, Nandakumar R, Redjimi R, Sia R, Skwarnicki T, Stone S, Wang JC, Zhang K, Csorna SE, Bonvicini G, Cinabro D, Dubrovin M, Bornheim A, Pappas SP, Weinstein AJ, Rosner JL, Briere RA, Chen GP, Ferguson T, Tatishvili G, Vogel H, Watkins ME, Adam NE, Alexander JP, Berkelman K, Cassel DG, Crede V, Duboscq JE, Ecklund KM, Ehrlich R, Fields L, Galik RS, Gibbons L, Gittelman B, Gray R, Gray SW, Hartill DL, Heltsley BK, Hertz D, Hsu L, 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, Shepherd MR, Stroiney S, Sun WM, Thayer JG, Urner D, Wilksen T, Weinberger M, Athar SB, Avery P, Breva-Newell L, Patel R, Potlia V, Stoeck H, Yelton J, Rubin P, Cawlfield C, Eisenstein BI, Gollin GD, Karliner I, Kim D, Lowrey N, Naik P, Sedlack C, Selen M, Thaler JJ, Williams J, Wiss J, Edwards KW, Besson D, Pedlar TK, Gao KY, Gong DT, Kubota Y, Lang BW, Li SZ, Poling R, Scott AW, Smith A, Stepaniak CJ. Search for X(3872) in gammagamma fusion and radiative production at CLEO. PHYSICAL REVIEW LETTERS 2005; 94:032004. [PMID: 15698254 DOI: 10.1103/physrevlett.94.032004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2004] [Indexed: 05/24/2023]
Abstract
We report on a search for the recently reported X(3872) state using 15.1 fb(-1) of e(+)e(-) data taken in the sqrt[s] = 9.46-11.30 GeV region. Separate searches for the production of the X(3872) in untagged gammagamma fusion and e(+)e(-) annihilation following initial state radiation are made by taking advantage of the unique angular correlation between the leptons from the decay J/psi --> l(+)l(-) in X(3872) decay to pi(+)pi(-)J/psi. No signals are observed in either case, and 90% confidence upper limits are established as (2J+1)Gamma(gammagamma)(X(3872))B(X --> pi(+)pi(-)J/psi) < 12.9 eV and Gamma(ee)(X(3872))B(X- -> pi(+)pi(-)J/psi) < 8.3 eV.
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Huang GS, Miller DH, Pavlunin V, Sanghi B, Shibata EI, Shipsey IPJ, Adams GS, Chasse M, Cummings JP, Danko I, Napolitano J, Cronin-Hennessy D, Park CS, Park W, Thayer JB, Thorndike EH, Coan TE, Gao YS, Liu F, Stroynowski R, Artuso M, Boulahouache C, Blusk S, Butt J, Dambasuren E, Dorjkhaidav O, Menaa N, Mountain R, Muramatsu H, Nandakumar R, Redjimi R, Sia R, Skwarnicki T, Stone S, Wang JC, Zhang K, Mahmood AH, Csorna SE, Bonvicini G, Cinabro D, Dubrovin M, Bornheim A, Lipeles E, Pappas SP, Weinstein AJ, Briere RA, Chen GP, Ferguson T, Tatishvili G, Vogel H, Watkins ME, Adam NE, Alexander JP, Berkelman K, Cassel DG, Duboscq JE, Ecklund KM, Ehrlich R, Fields L, Galik RS, Gibbons L, Gittelman B, Gray R, Gray SW, Hartill DL, Heltsley BK, Hertz D, Hsu L, Jones CD, Kandaswamy J, Kreinick DL, Kuznetsov VE, Mahlke-Krüger H, Meyer TO, Onyisi PUE, Patterson JR, Pedlar TK, Peterson D, Pivarski J, Riley D, Rosner JL, Ryd A, Sadoff AJ, Schwarthoff H, Shepherd MR, Sun WM, Thayer JG, Urner D, Wilksen T, Weinberger M, Athar SB, Avery P, Breva-Newell L, Patel R, Potlia V, Stoeck H, Yelton J, Rubin P, Cawlfield C, Eisenstein BI, Gollin GD, Karliner I, Kim D, Lowrey N, Naik P, Sedlack C, Selen M, Thaler JJ, Williams J, Wiss J, Edwards KW, Besson D, Gao KY, Gong DT, Kubota Y, Li SZ, Poling R, Scott AW, Smith A, Stepaniak CJ, Urheim J, Metreveli Z, Seth KK, Tomaradze A, Zweber P, Ernst J, Arms K, Gan KK, Severini H, Skubic P, Asner DM, Dytman SA, Mehrabyan S, Mueller JA, Savinov V, Li Z, Lopez A, Mendez H, Ramirez J. Study of the semileptonic charm decays D(0)-->pi(-)l(+)nu and D(0)-->K(-)l(+)nu. PHYSICAL REVIEW LETTERS 2005; 94:011802. [PMID: 15698066 DOI: 10.1103/physrevlett.94.011802] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2004] [Indexed: 05/24/2023]
Abstract
We investigate the decays D(0)-->pi(-)l(+)nu and D(0)-->K(-)l(+)nu, where l is e or mu, using approximately 7 fb(-1) of data collected with the CLEO III detector. We find R(0) identical with B(D(0)-->pi(-)e(+)nu)/B(D(0)-->K(-)e(+)nu)=0.082+/-0.006+/-0.005. Fits to the kinematic distributions of the data provide parameters describing the form factor of each mode. Combining the form factor results and R(0) gives |f(pi)(+)(0)|(2)|V(cd)|(2)/|f(K)(+)(0)|(2)|V(cs)|(2)=0.038(+0.006+0.005)(-0.007-0.003).
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Adams GS, Chasse M, Cravey M, Cummings JP, Danko I, Napolitano J, Cronin-Hennessy D, Park CS, Park W, Thayer JB, Thorndike EH, Coan TE, Gao YS, Liu F, Stroynowski R, Artuso M, Boulahouache C, Blusk S, Butt J, Dambasuren E, Dorjkhaidav O, Menaa N, Mountain R, Muramatsu H, Nandakumar R, Redjimi R, Sia R, Skwarnicki T, Stone S, Wang JC, Zhang K, Csorna SE, Bonvicini G, Cinabro D, Dubrovin M, Bornheim A, Pappas SP, Weinstein AJ, Briere RA, Chen GP, Ferguson T, Tatishvili G, Vogel H, Watkins ME, Adam NE, Alexander JP, Berkelman K, Cassel DG, Duboscq JE, Ecklund KM, Ehrlich R, Fields L, Galik RS, Gibbons L, Gittelman B, Gray R, Gray SW, Hartill DL, Heltsley BK, Hertz D, Hsu L, Jones CD, Kandaswamy J, Kreinick DL, Kuznetsov VE, Mahlke-Krüger H, Meyer TO, Onyisi PUE, Patterson JR, Peterson D, Pivarski J, Riley D, Rosner JL, Ryd A, Sadoff AJ, Schwarthoff H, Shepherd MR, Sun WM, Thayer JG, Urner D, Wilksen T, Weinberger M, Athar SB, Avery P, Breva-Newell L, Patel R, Potlia V, Stoeck H, Yelton J, Rubin P, Cawlfield C, Eisenstein BI, Gollin GD, Karliner I, Kim D, Lowrey N, Naik P, Sedlack C, Selen M, Thaler JJ, Williams J, Wiss J, Edwards KW, Besson D, Gao KY, Gong DT, Kubota Y, Lang BW, Li SZ, Poling R, Scott AW, Smith A, Stepaniak CJ, Urheim J, Metreveli Z, Seth KK, Tomaradze A, Zweber P, Ernst J, Mahmood AH, Arms K, Gan KK, Asner DM, Dytman SA, Mehrabyan S, Mueller JA, Savinov V, Li Z, Lopez A, Mendez H, Ramirez J, Huang GS, Miller DH, Pavlunin V, Sanghi B, Shibata EI, Shipsey IPJ. Measurement of the muonic branching fractions of the narrow upsilon resonances. PHYSICAL REVIEW LETTERS 2005; 94:012001. [PMID: 15698068 DOI: 10.1103/physrevlett.94.012001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2004] [Indexed: 05/24/2023]
Abstract
The decay branching fractions of the three narrow Upsilon resonances to mu(+)mu(-) have been measured by analyzing about 4.3 fb(-1) e(+)e(-) data collected with the CLEO III detector. The branching fraction B(Upsilon(1S)-->mu(+)mu(-))=(2.49+/-0.02+/-0.07)% is consistent with the current world average, but B(Upsilon(2S)-->mu(+)mu(-))=(2.03+/-0.03+/-0.08)% and B(Upsilon(3S)-->mu(+)mu(-))=(2.39+/-0.07+/-0.10)% are significantly larger than prior results. These new muonic branching fractions imply a narrower total decay width for the Upsilon(2S) and Upsilon(3S) resonances and lower other branching fractions that rely on these decays in their determination.
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Adam NE, Alexander JP, Berkelman K, Cassel DG, Duboscq JE, Ecklund KM, Ehrlich R, Fields L, Galik RS, Gibbons L, Gittelman B, Gray R, Gray SW, Hartill DL, Heltsley BK, Hertz D, Hsu L, Jones CD, Kandaswamy J, Kreinick DL, Kuznetsov VE, Mahlke-Krüger H, Meyer TO, Onyisi PUE, Patterson JR, Peterson D, Pivarski J, Riley D, Rosner JL, Ryd A, Sadoff AJ, Schwarthoff H, Shepherd MR, Sun WM, Thayer JG, Urner D, Wilksen T, Weinberger M, Athar SB, Avery P, Breva-Newell L, Patel R, Potlia V, Stoeck H, Yelton J, Rubin P, Cawlfield C, Eisenstein BI, Gollin GD, Karliner I, Kim D, Lowrey N, Naik P, Sedlack C, Selen M, Thaler JJ, Williams J, Wiss J, Edwards KW, Besson D, Gao KY, Gong DT, Kubota Y, Li SZ, Poling R, Scott AW, Smith A, Stepaniak CJ, Metreveli Z, Seth KK, Tomaradze A, Zweber P, Ernst J, Mahmood AH, Severini H, Asner DM, Dytman SA, Mehrabyan S, Mueller JA, Savinov V, Li Z, Lopez A, Mendez H, Ramirez J, Huang GS, Miller DH, Pavlunin V, Sanghi B, Shibata EI, Shipsey IPJ, Adams GS, Chasse M, Cummings JP, Danko I, Napolitano J, Cronin-Hennessy D, Park CS, Park W, Thayer JB, Thorndike EH, Coan TE, Gao YS, Liu F, Artuso M, Boulahouache C, Blusk S, Butt J, Dambasuren E, Dorjkhaidav O, Menaa N, Mountain R, Muramatsu H, Nandakumar R, Redjimi R, Sia R, Skwarnicki T, Stone S, Wang JC, Zhang K, Csorna SE, Bonvicini G, Cinabro D, Dubrovin M, Briere RA, Chen GP, Ferguson T, Tatishvili G, Vogel H, Watkins ME. Observation of 1(-)0(-) final states from psi(2S) decays and e(+)e(-) annihilation. PHYSICAL REVIEW LETTERS 2005; 94:012005. [PMID: 15698072 DOI: 10.1103/physrevlett.94.012005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2004] [Indexed: 05/24/2023]
Abstract
Using CLEO data collected from CESR e(+)e(-) collisions at the psi(2S) resonance and nearby continuum at sqrt[s]=3.67 GeV, we report the first significantly nonzero measurements of light vector-pseudoscalar hadron pair production (including rhopi, omegapi, rhoeta, and K(*0)K0 ) and the pi(+)pi(-)pi(0) final state, both from psi(2S) decays and direct e(+)e(-) annihilation.
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Bornheim A, Lipeles E, Pappas SP, Weinstein AJ, Briere RA, Chen GP, Ferguson T, Tatishvili G, Vogel H, Watkins ME, Adam NE, Alexander JP, Berkelman K, Cassel DG, Duboscq JE, Ecklund KM, Ehrlich R, Fields L, Galik RS, Gibbons L, Gittelman B, Gray R, Gray SW, Hartill DL, Heltsley BK, Hertz D, Hsu L, Jones CD, Kandaswamy J, Kreinick DL, Kuznetsov VE, Mahlke-Krüger H, Meyer TO, Onyisi PUE, Patterson JR, Peterson D, Pivarski J, Riley D, Rosner JL, Ryd A, Sadoff AJ, Schwarthoff H, Shepherd MR, Sun WM, Thayer JG, Urner D, Wilksen T, Weinberger M, Athar SB, Avery P, Breva-Newell L, Patel R, Potlia V, Stoeck H, Yelton J, Rubin P, Cawlfield C, Eisenstein BI, Gollin GD, Karliner I, Kim D, Lowrey N, Naik P, Sedlack C, Selen M, Thaler JJ, Williams J, Wiss J, Edwards KW, Besson D, Gao KY, Gong DT, Kubota Y, Li SZ, Poling R, Scott AW, Smith A, Stepaniak CJ, Urheim J, Metreveli Z, Seth KK, Tomaradze A, Zweber P, Ernst J, Arms K, Gan KK, Severini H, Skubic P, Asner DM, Dytman SA, Mehrabyan S, Mueller JA, Savinov V, Li Z, Lopez A, Mendez H, Ramirez J, Huang GS, Miller DH, Pavlunin V, Sanghi B, Shibata EI, Shipsey IPJ, Adams GS, Chasse M, Cummings JP, Danko I, Napolitano J, Cronin-Hennessy D, Park CS, Park W, Thayer JB, Thorndike EH, Coan TE, Gao YS, Liu F, Stroynowski R, Artuso M, Boulahouache C, Blusk S, Butt J, Dambasuren E, Dorjkhaidav O, Menaa N, Mountain R, Muramatsu H, Nandakumar R, Redjimi R, Sia R, Skwarnicki T, Stone S, Wang JC, Zhang K, Mahmood AH, Csorna SE, Bonvicini G, Cinabro D, Dubrovin M. Search for the lepton-flavor-violating leptonic B(0)-->mu(+/-)tau(-/+) and B(0)-->e(+/-)tau(-/+). PHYSICAL REVIEW LETTERS 2004; 93:241802. [PMID: 15697794 DOI: 10.1103/physrevlett.93.241802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2004] [Indexed: 05/24/2023]
Abstract
We have searched a sample of 9.6 x 10(6) BB events for the lepton-flavor-violating leptonic B decays, B(0)-->mu(+/-)tau(-/+) and B(0)-->e(+/-)tau(-/+). The tau lepton was detected through the decay modes tau-->lnunu(-) , where l=e, mu. There is no indication of a signal, and we obtain the 90% confidence level upper limits B(B(0)-->mu(+/-)tau(-/+))<3.8 x 10(-5) and B(B(0)-->e(+/-)tau(-/+))<1.3 x 10(-4).
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338
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Rubin P, Eisenstein BI, Gollin GD, Karliner I, Lowrey N, Naik P, Sedlack C, Selen M, Thaler JJ, Williams J, Edwards KW, Besson D, Gao KY, Gong DT, Kubota Y, Li SZ, Poling R, Scott AW, Smith A, Stepaniak CJ, Urheim J, Metreveli Z, Seth KK, Tomaradze A, Zweber P, Ernst J, Arms K, Eckhart E, Gan KK, Severini H, Skubic P, Asner DM, Dytman SA, Mehrabyan S, Mueller JA, Savinov V, Li Z, Lopez A, Mendez H, Ramirez J, Huang GS, Miller DH, Pavlunin V, Sanghi B, Shibata EI, Shipsey IPJ, Adams GS, Chasse M, Cummings JP, Danko I, Napolitano J, Cronin-Hennessy D, Park CS, Park W, Thayer JB, Thorndike EH, Coan TE, Gao YS, Liu F, Stroynowski R, Artuso M, Boulahouache C, Blusk S, Butt J, Dambasuren E, Dorjkhaidav O, Menaa N, Mountain R, Muramatsu H, Nandakumar R, Redjimi R, Sia R, Skwarnicki T, Stone S, Wang JC, Zhang K, Mahmood AH, Csorna SE, Bonvicini G, Cinabro D, Dubrovin M, Bornheim A, Lipeles E, Pappas SP, Weinstein AJ, Briere RA, Chen GP, Ferguson T, Tatishvili G, Vogel H, Watkins ME, Adam NE, Alexander JP, Berkelman K, Cassel DG, Duboscq JE, Ecklund KM, Ehrlich R, Fields L, Galik RS, Gibbons L, Gittelman B, Gray R, Gray SW, Hartill DL, Heltsley BK, Hertz D, Hsu L, Jones CD, Kandaswamy J, Kreinick DL, Kuznetsov VE, Mahlke-Krüger H, Meyer TO, Onyisi PUE, Patterson JR, Pedlar TK, Peterson D, Pivarski J, Riley D, Rosner JL, Ryd A, Sadoff AJ, Schwarthoff H, Shepherd MR, Sun WM, Thayer JG, Urner D, Wilksen T, Weinberger M, Athar SB, Avery P, Breva-Newell L, Patel R, Potlia V, Stoeck H, Yelton J. First observation and Dalitz analysis of the D0-->K(0)Setapi(0) decay. PHYSICAL REVIEW LETTERS 2004; 93:111801. [PMID: 15447329 DOI: 10.1103/physrevlett.93.111801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2004] [Indexed: 05/24/2023]
Abstract
Using 9.0 fb(-1) of integrated luminosity in e(+)e(-) collisions near the Upsilon(4S) mass collected with the CLEO II.V detector we report the first observation of the decay D0-->K(0)(S)etapi(0). We measure the ratio of branching fractions, BR(D0-->K(0)(S)etapi(0))BR / (D0-->K(0)(S)pi(0))=0.46+/-0.07+/-0.06. We perform a Dalitz analysis of 155 selected D0-->K(0)(S)etapi(0) candidates and find leading contributions from a(0)(980)K(0)(S) and K(*)(892)eta intermediate states.
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Thomas D, Vadas M, Lopez A. Regulation of haematopoiesis by growth factors - emerging insights and therapies. Expert Opin Biol Ther 2004; 4:869-79. [PMID: 15174969 DOI: 10.1517/14712598.4.6.869] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Haematopoiesis is regulated by a wide variety of glycoprotein hormones, including stem cell factor, granulocyte-macrophage colony-stimulating factor, thrombopoietin and IL-3. These haematopoietic growth factors (HGFs) share a number of properties, including redundancy, pleiotropy, autocrine and paracrine effects, receptor subunit oligomerisation and similar signal transduction mechanisms, yet each one has a unique spectrum of haematopoietic activity. Ongoing studies with knockout mice have discovered previously unrecognised physiological roles for HGFs, linking haematopoiesis to innate immunity, pulmonary physiology and bone metabolism. The regulation of stem cells by HGFs within niches of the bone marrow microenvironment is now well recognised and similar mechanisms appear to exist in the regulation of other stem cell compartments. Alternative signalling strategies, other than tyrosine kinase activation and phosphotyrosine cascades, may account for some of the more subtle differences between HGFs. Accumulating evidence suggests that some, but not all, HGF receptors can transduce a genuine lineage-determining signal at certain points in haematopoiesis. Further studies, primarily at the receptor level, are needed to determine the mechanisms of instructive signalling, which may include phosphoserine cascades. Novel haematopoietic regulators, as well as the development of biological therapies, including growth factor antagonists and peptide mimetics, are also discussed.
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340
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Barrajon E, Esquerdo G, Lopez A, Llorca C. Schedule dependency of 5-fluorouracil (5FU) chemotherapy in patients with advanced colorectal cancer: A systematic review. J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.2139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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341
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Ramshaw H, Lopez A, Bardy P. The development of cytokine receptor antagonists as potential therapeutic agents for the myeloproliferative disorders. Curr Pharm Des 2004; 8:357-68. [PMID: 12069374 DOI: 10.2174/1381612023396005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The aetiology of the myeloproliferative disorders and, in particular, of the myeloid leukaemias is unknown. The transformation of cells is primarily due to molecular aberrations leading to excessive cellular signalling and proliferation. In addition cytokines and their receptors may play a role in leukaemogenesis by increasing the proliferative capacity of leukaemic cells and extending their life span. Chemotherapeutic agents are regularly used to treat patients with leukaemia but they are non-discriminatory treatments that kill both healthy and cancer cells. Consequently patients receiving chemotherapy suffer unwanted toxicities in both the haematological and other systems. Therapies that specifically target malignant cells sparing normal cells are being investigated in a number of contexts. Cytokine antagonists can target growth factor-dependent cells by obstructing the interaction between cytokine and receptor. In this review we will discuss the myeloproliferative disorders in particular the leukaemias, the cytokines involved in leukaemogenesis, and the therapeutic potential of new agents that block specific cytokines.
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342
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Pollice A, Lopez A, Laera G, Rubino P, Lonigro A. Tertiary filtered municipal wastewater as alternative water source in agriculture: a field investigation in Southern Italy. THE SCIENCE OF THE TOTAL ENVIRONMENT 2004; 324:201-210. [PMID: 15081706 DOI: 10.1016/j.scitotenv.2003.10.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2003] [Revised: 09/12/2003] [Accepted: 10/19/2003] [Indexed: 05/24/2023]
Abstract
Results are reported concerning a 2-year field investigation on municipal wastewater reclamation for the irrigation of two experimental crops: tomato and fennel. Throughout the investigation, approximately 500 m(3) of tertiary membrane filtered wastewater without further disinfection was supplied to one of two parcels (500 m(2) each) of a test field located in Southern Italy. The second parcel was comparatively irrigated with 500 m(3) of conventional well water. Objectives of the investigation were (i) the evaluation of the performance of a membrane filtration pilot plant (productivity=0.7 m(3)h(-1)) for tertiary treatment and (ii) the comparison between agronomic results (features of soil and crops) after irrigation with reclaimed wastewater versus conventional groundwater. Over long term operation, the pilot plant performance resulted very good in terms of suspended solids and bacterial removal. Referring to the agronomic results, no substantial differences were observed after 2 years, both in terms of microbiological quality of the crops and characteristics of the soil. The whole results indicate membrane filtered municipal effluent as a viable alternative water resource for irrigation.
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Agaba EI, Lopez A, Ma I, Martinez R, Tzamaloukas RA, Vanderjagt DJ, Glew RH, Tzamaloukas AH. Chronic hemodialysis in a Nigerian teaching hospital: practice and costs. Int J Artif Organs 2004; 26:991-5. [PMID: 14708827 DOI: 10.1177/039139880302601104] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The incidence of end-stage renal disease (ESRD) is on the rise in developing countries. To identify issues related to renal replacement therapy in ESRD patients in the developing world, we analyzed the practice and costs of hemodialysis in Nigerian ESRD patients. Ten ESRD patients were dialyzed at the Jos University Teaching Hospital, Jos, Plateau State, Nigeria, between June 15 and July 15, 2003. In these patients, we analyzed initiation, vascular access issues, frequency, duration, adequacy and economics of chronic hemodialysis. The Nigerian patients were referred to the nephrologist for the first time only when they had developed frank uremia. No patient had a permanent vascular access at the time dialysis was initiated. Only two patients had a functioning dialysis fistula, while the other eight patients were dialyzed through temporary femoral vein catheters that were removed after each dialysis. Frequency of dialysis was three times weekly in 2 patients, twice weekly in 1 patient and once weekly or less frequently in 7 patients. The duration of a dialysis session was prescribed to be 4 hours, but sessions often lasted for as long as 10 hours because of breakdowns of the antiquated dialysis machines. The urea reduction ratio was 45.3 +/- 8.6%. In every case, the cost of dialysis was borne by the patients and their families. Comparison of the cost of dialysis, with extensive re-use of supplies, to monthly incomes of Nigerians with different professions revealed that the great majority of Nigerians cannot afford three times weekly dialysis. Underdialysis in Nigerian ESRD patients is common and caused by socioeconomic factors and technologic deficits. One step towards correction of underdialysis could be sharing of the cost of dialysis by the public.
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344
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Opal S, Laterre PF, Abraham E, Francois B, Wittebole X, Lowry S, Dhainaut JF, Warren B, Dugernier T, Lopez A, Sanchez M, Demeyer I, Jauregui L, Lorente JA, McGee W, Reinhart K, Kljucar S, Souza S, Pribble J. Recombinant human platelet-activating factor acetylhydrolase for treatment of severe sepsis: results of a phase III, multicenter, randomized, double-blind, placebo-controlled, clinical trial. Crit Care Med 2004; 32:332-41. [PMID: 14758145 DOI: 10.1097/01.ccm.0000108867.87890.6d] [Citation(s) in RCA: 128] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Platelet-activating factor (PAF) and structurally-related oxidized phospholipids are proinflammatory mediators in systemic inflammatory states such as severe sepsis. The enzyme platelet-activating factor acetylhydrolase (PAF-AH) rapidly degrades PAF and oxidized phospholipids into inactive metabolites. Reduced PAF-AH activity has been observed in patients with severe sepsis and may contribute to their systemic inflammatory response and organ dysfunction. A previous clinical trial with recombinant human PAF-AH (rPAF-AH, Pafase) suggested that this treatment may decrease 28-day all-cause mortality in patients with severe sepsis. The current study was undertaken to confirm this result. DESIGN A prospective, randomized, double-blind, placebo-controlled, multicenter, international trial. SETTING One hundred forty-six intensive care units from nine countries. PATIENTS Approximately 2,522 patients were planned to be enrolled < or =12 hrs after the onset of severe sepsis. Eligible patients were randomized to receive either rPAF-AH 1.0 mg/kg or placebo administered intravenously once daily for five consecutive days. MEASUREMENTS AND MAIN RESULTS The study was terminated based on the recommendation of an independent data and safety monitoring committee after the second of three planned interim analyses, and the enrollment of 1,425 patients. rPAF-AH treatment was well tolerated among the 1,261 patients included in the interim analysis (643 rPAF-AH and 618 placebo), but did not decrease 28-day all-cause mortality compared with placebo (25% for rPAF-AH vs. 24% for placebo; relative risk, 1.03; 95% confidence interval, 0.85-1.25; p =.80). There were no statistically significant differences between treatment groups in any of the secondary efficacy end points. The overall incidence of adverse events was similar among rPAF-AH and placebo-treated patients, and no rPAF-AH-treated patients developed antibodies to PAF-AH. CONCLUSIONS rPAF-AH was well tolerated and not antigenic, but did not decrease 28-day all-cause mortality in patients with severe sepsis.
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Lopez A, Benbelkacem H, Pic JS, Debellefontaine H. Oxidation pathways for ozonation of azo dyes in a semi-batch reactor: a kinetic parameters approach. ENVIRONMENTAL TECHNOLOGY 2004; 25:311-321. [PMID: 15176746 DOI: 10.1080/09593330409355465] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
In this study ozone and the H2O2/O3 oxidation system are used to decolorize aqueous solutions of Orange II (Or-II) and Acid Red 27 (AR-27). Investigations are carried out in a semi-batch bubble column reactor. A system of series-parallel reactions is proposed to describe the mechanism of dye oxidation. The stoichiometric ratio for the first reaction is found to be 1 mol dye per mol O3, while the overall ozone demand for both reactions one and two is found to be 5 and 6 moles for Or-II and AR-27 respectively. Molecular and radical kinetics are compared: a radical scavenger, t-butanol, can be added to ensure only the molecular reaction of ozone, or hydrogen peroxide can be supplied through a peristaltic pump, to initiate radical reactivity. Results reveal that colour removal is ensured by direct ozone attack. For both dyes, TOC removal efficiencies of 50 - 60 % are obtained by the action of the hydroxyl free radical. However, this is not improved by addition of H2O2, thus demonstrating that organic species alone ensure HO degrees radical production during ozonation. Both the mass transfer and the ozone reactivity with the dyes are considered to evaluate the kinetic parameters for the molecular pathway.
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Agaba E, Lopez A, Ma I, Martinez R, Tzamaloukas R, Vanderjagt D, Glew R, Tzamaloukas A. Chronic Hemodialysis in a Nigerian Teaching Hospital. Hemodial Int 2004. [DOI: 10.1111/j.1492-7535.2004.0085v.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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347
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Di Iaconi C, Bonemazzi F, Lopez A, Ramadori R. Integration of chemical and biological oxidation in a SBBR for tannery wastewater treatment. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2004; 50:107-114. [PMID: 15656302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
This paper reports the results of an investigation aimed at evaluating the laboratory-scale performance of an innovative process for treating tannery wastewater. In this process, biological degradation, carried out in a sequencing batch biofilm reactor (SBBR), is combined with chemical oxidation by ozone. Tannery wastewater treatment was carried out, at laboratory scale, on a real primary effluent coming from a centralised plant treating wastewater produced by a large tannery district in Northern Italy. SBBR performance both without and with ozonation, was assessed with very satisfactory results. In particular, in the latter instance the recorded COD, TKN and TSS average removals, (96%), (92%) and (98%) respectively, allowed the maximum allowable concentration values fixed by the Italian regulation in force to be achieved without any additional polishing step. During the investigation biofilm properties (biofilm concentration and biofilm density) and flow dynamics aspects (head loss, shear stress, bed porosity) were also studied. A major feature of the process is that, with or without ozonation, it was characterised by very low specific sludge production (0.05 kgVSS/kgCODremoved) and high biofilm density (i.e. 87-122 gVSS/Lsludge) both contributing to a rather high biofilm concentration (i.e. 31-44 gTSS/Lfilter).
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Romolo FS, Perret D, Lopez A, Curini R. Determination of nabilone in bulk powders and capsules by high-performance liquid chromatography/tandem mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2004; 18:128-130. [PMID: 14689569 DOI: 10.1002/rcm.1282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
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349
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Romolo FS, Rotolo MC, Palmi I, Pacifici R, Lopez A. Optimized conditions for simultaneous determination of opiates, cocaine and benzoylecgonine in hair samples by GC–MS. Forensic Sci Int 2003; 138:17-26. [PMID: 14642715 DOI: 10.1016/j.forsciint.2003.07.013] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The present paper describes a qualitative and quantitative method for the simultaneous detection of opiates, cocaine and benzoylecgonine from human hair samples. Every step of the analytical procedure was studied to find the optimized conditions. Nine different incubation systems were examined. The influence of different pH values of samples on the isolation of analytes from the incubation media by Bond Elut cartridges and the stability of the compounds of interest in the different incubation media and conditions were investigated. The extracting power of different incubation media was studied as well. The phosphate buffer 0.1 N at pH 5 was chosen as the extraction medium in an optimized procedure for simultaneous determination of opiates, cocaine and benzoylecgonine in hair samples. The method developed was validated. Recoveries were 90% for morphine (M), 81% for 6-monoacetylmorphine (6-AM), 90% for codeine (CD), 86% for cocaine (C) and 90% for benzoylecgonine (BE). Relative standard deviation for inter-day precision was better than 12%. The limits of detection resulted as 0.05 ng/mg for M and C, as 0.08 for 6-AM and as 0.2 ng/mg for BE. Forty hair samples collected from drug abusers admitted to centers for detoxification treatment were analyzed obtaining 23 positive results for opiates and/or cocaine. Twelve hair specimens longer than 10 cm were analyzed following a sectional approach. In the six positive cases, it was interesting to find that the 6-AM/M ratio generally decreased for each sample from the proximal segment to the distal segments. Moreover, the 6-AM/M ratio was generally lower than 1 in the intermediate and distal segments.
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Martinez-Burnes J, Lopez A, Wright GM, Ireland WP, Wadowska DW, Dobbin GV. Ultrastructural changes in the lungs of neonatal rats intratracheally inoculated with meconium. Histol Histopathol 2003; 18:1081-94. [PMID: 12973677 DOI: 10.14670/hh-18.1081] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Meconium aspiration syndrome has been for many years an important cause of neonatal respiratory distress in newborn babies and sporadically reported in animals. This investigation was designed to study the ultrastructural and morphometric changes in the lungs of neonatal rats following the intratracheal inoculation of meconium. Seven-day-old Fischer-344 rats (n = 24) were randomly allocated in two groups. One group was intratracheally inoculated with saline solution and the second group received homologous meconium. Neonates were euthanatized at 1, 3 and 7 postinoculation days (PID) and lungs were examined by light and electron microscopy. Saline solution did not induce any ultrastructural changes in the lung. In contrast, meconium induced deciliation, recruitment of neutrophils and pulmonary alveolar macrophages to the bronchoalveolar space, intravascular sequestration of neutrophils and aggregation of platelets at PID 1 and 3. Other ultrastructural changes at PID 1 and 3 included interstitial edema and escape of red cells and fibrin into the alveolar space and interstitium. Interstitial edema and sequestration of neutrophils were responsible for the significant increase in thickness of alveolar septa. At PID 7 there was hyperplasia and enlargement of type II pneumocytes as well as interstitial proliferation of mesenchymal cells with intra-alveolar fibrosis. It was concluded that intratracheal inoculation of meconium in neonatal rats induces acute ultrastructural changes followed by a reparative response.
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