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Multi-molecular emission of a cationic Pt(ii) complex through hydrogen bonding interactions. Dalton Trans 2018; 47:4087-4092. [PMID: 29451289 DOI: 10.1039/c8dt00314a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The cationic Pt complexes with amide groups have been found to show dimer emission through hydrogen bonding interactions with counter anions even at low concentration. In order to investigate further details of dimer emission, we prepared three Pt complexes, Pt·B(C6F5)4, Pt·Cl, and Pt·PF6, whose counter anions possess different strengths of a hydrogen bonding acceptor. Hydrogen bonding interactions in the ground state and excited-state dynamics of the Pt complexes were evaluated by NMR analysis, temperature dependence, and kinetics of dimer emission. These studies revealed that the hydrogen bonding interaction in the ground state is essential for dimer emission, but too strong hydrogen bonding prevents dimer emission due to the inhibition of a stacked dimer formation in the excited state. Owing to this trade-off, the Pt complex with a moderate hydrogen bonding acceptor, PF6-, most effectively shows dimer emission. In general, a strong supramolecular interaction efficiently provides a desired assembled structure showing multi-molecular emission. We revealed a unique phenomenon that a moderate interaction is beneficial to effective multi-molecular emission.
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073_16740-H5 Impact of Extensive Encircling of Pulmonary Vein Isolation Guided by Complex Fractionated Atrial Electrograms (CFAE-guided EEPVI) for Persistent Atrial Fibrillation. JACC Clin Electrophysiol 2017. [DOI: 10.1016/j.jacep.2017.09.110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Natriuretic peptide/cyclic guanosine monophosphate pathway exerts compensatory roles against endothelin system in the pulmonary circulation of left heart disease. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht307.p620] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Effects of epidermal growth factor and/or nerve growth factor on Malassez's epithelial rest cells in vitro: expression of mRNA for osteopontin, bone morphogenetic protein 2 and vascular endothelial growth factor. J Periodontal Res 2010; 45:421-7. [PMID: 20337888 DOI: 10.1111/j.1600-0765.2009.01254.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND AND OBJECTIVE Malassez's epithelial rest (MER) cells are involved in the maintenance and homeostasis of the periodontal ligament (PDL). The purpose of this study was to determine the effects of epidermal growth factor (EGF) and/or nerve growth factor (NGF) in vitro on these functions of MER cells. MATERIAL AND METHODS MER cells from porcine PDL were incubated for 3 or 9 h after the addition of EGF and/or NGF to final concentrations of 10 ng/mL. Cells cultured without those growth factors were used as controls. The expression of mRNA for osteopontin, bone morphogenetic protein 2 (BMP-2) and vascular endothelial growth factor (VEGF) was analyzed using quantitative RT-PCR. RESULTS There was a decrease in the expression of osteopontin mRNA by MER cells treated for 9 h with NGF and the level of mRNA expressed was lower than that of the control and EGF-treated groups. The expression of BMP-2 mRNA by MER cells treated with NGF for 9 h also decreased, and was lower than that of the control and EGF-treated groups. The expression of VEGF mRNA by MER cells treated with EGF for 3 or 9 h was higher than in the control and NGF-treated groups. The expression of VEGF mRNA was lower in MER cells treated with NGF for 3 and 9 h than in the control and EGF-treated groups, and decreased from 3 to 9 h of treatment. EGF stimulated MER cells to secrete VEGF, which suggests that EGF plays an important role in maintaining the homeostasis of the PDL. NGF acts on MER cells to inhibit calcification in the PDL. Furthermore, in the EGF+NGF-treated MER cells, expression of mRNA for BMP-2 and VEGF was similar to that of the NGF-treated group, but cell proliferation and expression of osteopontin mRNA were similar to that of the EGF-treated group. CONCLUSION EGF and NGF play important roles in maintaining the PDL.
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Site preference of valence ions in Fe 1+xCo 2-xO 4(0 ≤ x≤ 1). Acta Crystallogr A 2005. [DOI: 10.1107/s0108767305083005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Magnetic structure of BaFe 12O 19determined by resonant X-ray magnetic scattering. Acta Crystallogr A 2005. [DOI: 10.1107/s0108767305093232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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X-ray magnetic circular dichroism for transparent cobalt-doped anatase thin film. Acta Crystallogr A 2002. [DOI: 10.1107/s0108767302098963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Fate of vector dominance in effective field theory. PHYSICAL REVIEW LETTERS 2001; 87:152001. [PMID: 11580692 DOI: 10.1103/physrevlett.87.152001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2001] [Indexed: 05/23/2023]
Abstract
We reveal the full phase structure of the effective field theory for QCD, based on hidden local symmetry (HLS) through the one-loop renormalization group equation including quadratic divergences. We then show that vector dominance (VD) is not a sacred discipline of the effective field theory but rather an accidental phenomenon peculiar to three-flavored QCD. In particular, the chiral symmetry restoration in the HLS model takes place in a wide phase boundary surface, on which the VD is nowhere realized. This suggests that VD may not be valid for chiral symmetry restoration in hot and/or dense QCD.
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Identification of human CPI-17, an inhibitory phosphoprotein for myosin phosphatase. Biochem Biophys Res Commun 2001; 285:1040-5. [PMID: 11467857 DOI: 10.1006/bbrc.2001.5290] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
CPI-17 is a phosphorylation-dependent inhibitor of myosin phosphatase. cDNA clones encoding CPI-17 were isolated from a human aorta library. Overlapping clones indicated two isoforms: CPI-17alpha was 147 residues and mass of 16.7 kDa; CPI-17beta (120 residues, mass 13.5 kDa) resulted from a deletion in the alpha-isoform of 27 residues, sequence 68-94. N-terminal 67 residues of all CPI-17 isoforms (human, porcine, rat and mouse) were highly conserved (for the human and porcine isoforms the identity was 91%). The presence of the two human isoforms was detected from cDNA sequences amplified by RT-PCR and by Western blots on human aorta. The cloned human CPI-17 gene indicated 4 coding exons and CPI-17beta was an alternative splice variant due to deletion of the second exon. FISH analysis located the human CPI-17 gene on chromosome 19q13.1.
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Vector manifestation of chiral symmetry. PHYSICAL REVIEW LETTERS 2001; 86:757-760. [PMID: 11177933 DOI: 10.1103/physrevlett.86.757] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2000] [Indexed: 05/23/2023]
Abstract
We propose "vector manifestation" (VM) of the Wigner realization of chiral symmetry in which the symmetry is restored at the critical point by the massless degenerate pion (and its flavor partners) and the rho meson (and its flavor partners) as the chiral partner, in sharp contrast to the traditional manifestation á la the linear sigma model where the symmetry is restored by the degenerate pion and the scalar meson. The application to the chiral phase transition of large N(f) QCD is performed using the hidden local symmetry Lagrangian. Combined with the Wilsonian matching proposed recently, VM determines the critical number of massless flavors N(f) approximately equal to 5 without much ambiguity.
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Lack of association between atopic asthma and polymorphisms of the histamine H1 receptor, histamine H2 receptor, and histamine N-methyltransferase genes. Immunogenetics 2000; 51:238-40. [PMID: 10752634 DOI: 10.1007/s002510050037] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Differential expression of genes involved in the biosynthesis and perception of ethylene during ripening of passion fruit (Passiflora edulis Sims). PLANT & CELL PHYSIOLOGY 1998; 39:1209-1217. [PMID: 9891418 DOI: 10.1093/oxfordjournals.pcp.a029322] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
An increase in the enzyme activity of 1-aminocyclopropane-1-carboxylic acid (ACC) synthase and ACC oxidase induces the evolution of ethylene during the ripening of passion fruit. A much higher level of ethylene is produced in arils than in seeds or peels during ripening. The pattern of expression of two ACC synthase genes (PE-ACS1 and PE-ACS2), one ACC oxidase gene (PE-ACO1), and two ethylene receptor genes (PE-ETR1 and PE-ERS1) revealed that the expression of these genes is differentially regulated. Expression of PE-ACS1 and PE-ACO1 was enhanced during ripening and after ethylene treatment. However, prominent expression of PE-ACS1 was delayed compared to that of PE-ACO1. Much larger quantities of PE-ACS1 mRNA and PE-ACO1 mRNA were seen in arils than in seeds; this corresponds well with an increase in the amount of ethylene produced by the plant tissue itself. The level of PE-ACS2 mRNA was detectable in arils of the preclimacteric fruit, although it decreased during ripening. These results suggest that expression of PE-ACS1 and PE-ACO1 is required to increase the activity of ethylene biosynthetic enzymes during ripening. The level of expression of PE-ETR1 and PE-ERS1 did not significantly change over the course of ripening; however, the mRNA levels of PE-ETR1 and PE-ERS1 were much higher in arils than in seeds.
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Valence-difference contrast measurements utilizing X-ray anomalous scattering. JOURNAL OF SYNCHROTRON RADIATION 1998; 5:920-922. [PMID: 15263697 DOI: 10.1107/s0909049597018086] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/1997] [Accepted: 11/27/1997] [Indexed: 05/24/2023]
Abstract
Anomalous scattering experiments with X-ray wavelengths close to an absorption edge have made it possible to determine independently the behaviour of ions in different valence states. The anomalous scattering factors of Fe(2+) and Fe(3+) obtained from both absorption and diffraction data have a large difference in f' between the two kinds of ions. Using a valence-difference contrast method, Bragg and diffuse scattering measurements were carried out for single crystals of Fe(3)O(4) at low temperatures. The results demonstrate the ability of the contrast method to resolve charge ordering and valence fluctuation details.
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[Case of tetanus initially presenting a problem in differentiating from cervical spondylosis deformans]. NIHON NAIKA GAKKAI ZASSHI. THE JOURNAL OF THE JAPANESE SOCIETY OF INTERNAL MEDICINE 1997; 86:133-4. [PMID: 9102410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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[A case of mantle zone lymphoma with multiple lymphomatous polyposis]. NIHON NAIKA GAKKAI ZASSHI. THE JOURNAL OF THE JAPANESE SOCIETY OF INTERNAL MEDICINE 1995; 84:2067-8. [PMID: 8586930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Can the Nambu-Goldstone boson live on the light front? PHYSICAL REVIEW LETTERS 1995; 74:4771-4774. [PMID: 10058595 DOI: 10.1103/physrevlett.74.4771] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Generation of hydrogen peroxide by varicella-zoster virus-stimulated polymorphonuclear leukocytes. ACTA ACUST UNITED AC 1994; 2:221-9. [PMID: 15566768 DOI: 10.1016/0928-0197(94)90047-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/1993] [Revised: 01/11/1994] [Accepted: 01/11/1994] [Indexed: 10/27/2022]
Abstract
BACKGROUND In varicella-zoster virus (VZV) infections, the initial response in cutaneous lesions is predominantly polymorphonuclear leukocytes (PMN). However, interaction of VZV and PMN has not yet been fully defined. OBJECTIVES To explore the potential role of PMN in VZV infections, we investigated the ability of PMN to generate hydrogen peroxide (H(2)O(2)) after stimulation with VZV antigen. STUDY DESIGN H(2)O(2), one of the reactive oxygen species, was measured by cytofluorography after PMN were incubated with varicella-zoster virus (VZV) antigen in the presence of seropositive or seronegative serum. RESULTS H(2)O(2) was detectable in unseparated PMN obtained from seropositive children and adults, while unseparated PMN of seronegative donors were not capable of generating H(2)O(2). Separated PMN obtained from either seropositive or seronegative donors were capable of generating H(2)O(2) in the presence of seropositive serum. However, H(2)O(2) was not detectable in separated PMN of seropositive donors in the presence of seronegative serum. The of H(2)O(2) generation did not correlate with concentrations of serum antibodies to VZV. CONCLUSIONS VZV antigen-antibody complexes might induce H(2)O(2) generation by PMN.
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Effect of varicella zoster virus antigen-antibody complexes on hydrogen peroxide generation by human polymorphonuclear leukocytes. ACTA PAEDIATRICA JAPONICA : OVERSEAS EDITION 1994; 36:341-6. [PMID: 7941996 DOI: 10.1111/j.1442-200x.1994.tb03198.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Hydrogen peroxide (H2O2) generation by human polymorphonuclear leukocytes (PMN) incubated with varicella zoster virus (VZV) antigen was studied by cytofluorography. Hydrogen peroxide generation was detected in the presence of VZV-seropositive sera. When seropositive sera were heat-inactivated, H2O2 generation was reduced. When PMN were pre-incubated with Leu-11b, a monoclonal antibody to the Fc receptor on PMN, H2O2 generation was also reduced. These results suggest that VZV antigen-antibody-complement complexes induce H2O2 generation by PMN after these complexes attach to Fc receptors on PMN.
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A flow cytometric method for measurement of hydrogen peroxide generation by pediatric polymorphonuclear leukocytes stimulated by Staphylococcus aureus and Escherichia coli. ACTA PAEDIATRICA JAPONICA : OVERSEAS EDITION 1994; 36:244-9. [PMID: 8091970 DOI: 10.1111/j.1442-200x.1994.tb03172.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The generation of hydrogen peroxide (H2O2), one of the reactive oxygen species, by polymorphonuclear leukocytes (PMN) stimulated by Staphylococcus aureus and Escherichia coli was studied in infants by cytofluorography. After heparinized whole blood was incubated with bacteria for 60 min, generated H2O2 was measured. The positive rate of H2O2 generation of PMN and mean fluorescent intensity of positive PMN stimulated by S. aureus and E. coli were significantly reduced in infants aged < 1 year and H2O2 generation increased with advancing age. In 10-15 year old children, the level of generated H2O2 reached adult levels. When sera from 1 year old children were added to separated PMN from healthy adults, H2O2 generation was reduced. In contrast, H2O2 generation by PMN from 1 year old children was increased by the addition of adult sera. These results suggest that the ability to generate H2O2 in response to S. aureus and E. coli is lower in infants and that such reduced activity may be related to the susceptibility of such infants to S. aureus and E. coli infections.
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Proving the low energy theorem of hidden local symmetry. PHYSICAL REVIEW LETTERS 1993; 71:1299-1302. [PMID: 10055505 DOI: 10.1103/physrevlett.71.1299] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Critical line and dilaton in scale-invariant QED. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1989; 39:2430-2433. [PMID: 9959929 DOI: 10.1103/physrevd.39.2430] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Ketonization of Secondary Hydroxy Groups of Alcohols and Diols with Hydrogen Peroxide Under the Influence of Tricetylpyridinium-12-Tungstophosphate. SYNTHETIC COMMUN 1988. [DOI: 10.1080/00397918808057856] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Discriminating technicolor theories through flavor-changing neutral currents: Slowly varying or fixed coupling constants? PHYSICAL REVIEW LETTERS 1987; 59:389-392. [PMID: 10035756 DOI: 10.1103/physrevlett.59.389] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Hidden local symmetry versus massive Yang-Mills theory in the nonlinear chiral Lagrangian. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1987; 35:412-415. [PMID: 9957535 DOI: 10.1103/physrevd.35.412] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Chemoselective Oxidation of Secondary Hydroxy Functions Catalyzed by [PMo12O40]3-[C5H5N+(CH2)15CH3]3. SYNTHETIC COMMUN 1986. [DOI: 10.1080/00397918608078769] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Non-Abelian Anomaly and Vector Mesons as Dynamical Gauge Bosons of Hidden Local Symmetries. ACTA ACUST UNITED AC 1985. [DOI: 10.1143/ptp.73.926] [Citation(s) in RCA: 216] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Is the rho meson a dynamical gauge boson of hidden local symmetry? PHYSICAL REVIEW LETTERS 1985; 54:1215-1218. [PMID: 10030967 DOI: 10.1103/physrevlett.54.1215] [Citation(s) in RCA: 90] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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[Respiration monitoring by respiratory sound analysis]. RINSHO BYORI. THE JAPANESE JOURNAL OF CLINICAL PATHOLOGY 1983; Spec No 57:81-9. [PMID: 6674576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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