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Chemical Compound Review

Baytitan     dioxotitanium

Synonyms: Brookite, Flamenco, Hombikat, Hombitan, Sagenite, ...
 
 
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Disease relevance of dioxotitanium

 

Psychiatry related information on dioxotitanium

 

High impact information on dioxotitanium

  • Devices fabricated using a fluorescein photoreceptor on an Au/TiO2/Ti multilayer structure had typical open-circuit photovoltages of 600-800 mV and short-circuit photocurrents of 10-18 micro A cm(-2) under 100 mW cm(-2) visible band illumination: the internal quantum efficiency (electrons measured per photon absorbed) was 10 per cent [8].
  • Transfection of COS cells with MARCO cDNA conferred mAb-inhibitable TiO2 binding [9].
  • To identify these receptors, we generated a monoclonal antibody (mAb), PAL-1, that inhibits hamster AM binding of unopsonized particles (TiO2, Fe2O3, and latex beads; 66 +/- 5, 77 +/- 2, and 85 +/- 2% inhibition, respectively, measured by flow cytometry) [9].
  • An amorphous sample with surface area of 34,600 m(2)/mol is 24.25 +/- 0.88 kJ/mol higher in enthalpy than bulk rutile [10].
  • The gypsy retroelement of Drosophila moves at high frequency in the germ line of the progeny of females carrying a mutation in the flamenco (flam) gene [11].
 

Chemical compound and disease context of dioxotitanium

 

Biological context of dioxotitanium

  • In contrast, very little cell death was observed from TiO2 treatment without UV irradiation [17].
  • AM uptake of unopsonized TiO2, SR ligands or acetylated LDL caused no significant activation of AM respiratory burst or TNF production, consistent with past observations that opsonin-independent phagocytosis of inert particles by normal AMs is not accompanied by pro-inflammatory activation [18].
  • High purity anatase TiO(2) nanocrystals: near room-temperature synthesis, grain growth kinetics, and surface hydration chemistry [19].
  • Oxygen vacancies as active sites for water dissociation on rutile TiO(2)(110) [20].
  • It seems plausible that the difference of activity observed for TiO2 and F-TiO2 is not related to various types of generated hydroxyl radicals, but rather to competition between electron-transfer processes (formation of radicals) and energy-transfer processes (formation of singlet oxygen) [21].
 

Anatomical context of dioxotitanium

  • HeLa cells cultured in vitro were completely killed in the presence of TiO2 (50 micrograms/ml) with 10-min UV irradiation by a 500-W-Hg lamp [17].
  • Human skin fibroblasts, preincubated 18 h with 10 micrograms/cm2 TiO2 and then UVA-irradiated (0-58 KJ/m2), showed dose dependent photocytoxicity [22].
  • There was a marked loss of chemotactic ability in leukocytes from rats inhaling the pneumoconiotic dusts compared with controls; TiO2-exposed leukocytes had some impairment of chemotaxis, but this was substantially less than that found with the pneumoconiotic dusts [23].
  • The semiconductor TiO2 is known to have photobiological activity in prokaryotic and eukaryotic cells [22].
  • The morphologies of both titania sol-gel and the enzyme membranes were characterized using scanning electron microscopy and proved to be chemically clean, porous, and homogeneous and to have a very narrow particle size distribution [24].
 

Associations of dioxotitanium with other chemical compounds

  • The sol-gel reaction of titanium tetraisopropoxide (TTIP) was used to prepare core/shell-type titania nanocapsules with CTAB-coated Ag nanoparticles as the core [25].
  • However, X-ray photoemission measurements also indicate lower binding energies than the usual Au 4f(7/2) at 84.0 eV for both alumina and titania supported catalysts, indicating a modification of the electronic structure of the metal [26].
  • To demonstrate the commercial application potential of these processes, we also report titanate and TiO(2) nanostructures synthesized directly from rutile minerals and industrial-grade rutiles by a new scheme of hydrometallurgical reactions [27].
  • Furthermore, the physical origin of the water effects on Au catalysis has been identified by electronic structure analyses: There is a charge transfer from TiO2 in the presence of OH to O2, and the O2 adsorption energy depends linearly on the O2 charge [28].
  • The time evolution of the Raman spectra shows an increasing fluorescence indicating that, upon electron injection, catechol polymerization occurs on the TiO2 surfaces [29].
 

Gene context of dioxotitanium

 

Analytical, diagnostic and therapeutic context of dioxotitanium

  • Interfacial synthesis of hollow TiO2 microspheres in ionic liquids [35].
  • Unusual crystallization behaviors of anatase nanocrystallites from a molecularly thin titania nanosheet and its stacked forms: increase in nucleation temperature and oriented growth [36].
  • Excited-state metal-to-ligand charge transfer dynamics of a ruthenium(II) dye in solution and adsorbed on TiO2 nanoparticles from resonance Raman spectroscopy [37].
  • Heats of adsorption of linear CO species adsorbed on the Au degrees and Ti+delta sites of a 1% Au/TiO2 catalyst using in situ FTIR spectroscopy under adsorption equilibrium [38].
  • We use low-energy electron microscopy to show that changing the temperature of oxygen-deficient, rutile-structure crystals causes steps on the (110) surfaces to move [39].

References

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  2. Proviral amplification of the Gypsy endogenous retrovirus of Drosophila melanogaster involves env-independent invasion of the female germline. Chalvet, F., Teysset, L., Terzian, C., Prud'homme, N., Santamaria, P., Bucheton, A., Pélisson, A. EMBO J. (1999) [Pubmed]
  3. Restrictive flamenco Alleles Are Maintained in Drosophila melanogaster Population Cages, Despite the Absence of Their Endogenous gypsy Retroviral Targets. Pélisson, A., Payen-Groschêne, G., Terzian, C., Bucheton, A. Mol. Biol. Evol. (2007) [Pubmed]
  4. Role of urokinase in the fibrogenic response of the lung to mineral particles. Lardot, C.G., Huaux, F.A., Broeckaert, F.R., Declerck, P.J., Delos, M., Fubini, B., Lison, D.F. Am. J. Respir. Crit. Care Med. (1998) [Pubmed]
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  12. Enhanced lipid peroxidation in lung lavage of rats after inhalation of asbestos. Petruska, J.M., Leslie, K.O., Mossman, B.T. Free Radic. Biol. Med. (1991) [Pubmed]
  13. Evidence that ultrafine titanium dioxide induces micronuclei and apoptosis in Syrian hamster embryo fibroblasts. Rahman, Q., Lohani, M., Dopp, E., Pemsel, H., Jonas, L., Weiss, D.G., Schiffmann, D. Environ. Health Perspect. (2002) [Pubmed]
  14. Particulate matter exposure impairs systemic microvascular endothelium-dependent dilation. Nurkiewicz, T.R., Porter, D.W., Barger, M., Castranova, V., Boegehold, M.A. Environ. Health Perspect. (2004) [Pubmed]
  15. Synthesis and characterization of ruthenium(II) molecular assemblies for photosensitization of nanocrystalline TiO2: utilization of hydroxyl grafting mode. Gholamkhass, B., Koike, K., Negishi, N., Hori, H., Takeuchi, K. Inorganic chemistry. (2001) [Pubmed]
  16. Light induced H2 evolution in a hydrogenase-TiO2 particle system by direct electron transfer or via rhodium complexes. Cuendet, P., Rao, K.K., Grätzel, M., Hall, D.O. Biochimie (1986) [Pubmed]
  17. Induction of cytotoxicity by photoexcited TiO2 particles. Cai, R., Kubota, Y., Shuin, T., Sakai, H., Hashimoto, K., Fujishima, A. Cancer Res. (1992) [Pubmed]
  18. Lung macrophage uptake of unopsonized environmental particulates. Role of scavenger-type receptors. Kobzik, L. J. Immunol. (1995) [Pubmed]
  19. High purity anatase TiO(2) nanocrystals: near room-temperature synthesis, grain growth kinetics, and surface hydration chemistry. Li, G., Li, L., Boerio-Goates, J., Woodfield, B.F. J. Am. Chem. Soc. (2005) [Pubmed]
  20. Oxygen vacancies as active sites for water dissociation on rutile TiO(2)(110). Schaub, R., Thostrup, P., Lopez, N., Laegsgaard, E., Stensgaard, I., Nørskov, J.K., Besenbacher, F. Phys. Rev. Lett. (2001) [Pubmed]
  21. Singlet oxygen photogeneration at surface modified titanium dioxide. Ja Nacute Czyk, A., Krakowska, e.l. .Z.B., Stochel, G.Z., Macyk, W. J. Am. Chem. Soc. (2006) [Pubmed]
  22. Oxidative damage to nucleic acids photosensitized by titanium dioxide. Wamer, W.G., Yin, J.J., Wei, R.R. Free Radic. Biol. Med. (1997) [Pubmed]
  23. Impaired chemotactic responses of bronchoalveolar leukocytes in experimental pneumoconiosis. Donaldson, K., Brown, G.M., Brown, D.M., Slight, J., Robertson, M.D., Davis, J.M. J. Pathol. (1990) [Pubmed]
  24. Preparation of porous titania sol-gel matrix for immobilization of horseradish peroxidase by a vapor deposition method. Yu, J., Ju, H. Anal. Chem. (2002) [Pubmed]
  25. Preparation of Highly Dispersed Core/Shell-type Titania Nanocapsules Containing a Single Ag Nanoparticle. Sakai, H., Kanda, T., Shibata, H., Ohkubo, T., Abe, M. J. Am. Chem. Soc. (2006) [Pubmed]
  26. Oxidation of CO on gold supported catalysts prepared by laser vaporization: direct evidence of support contribution. Arrii, S., Morfin, F., Renouprez, A.J., Rousset, J.L. J. Am. Chem. Soc. (2004) [Pubmed]
  27. Phase transition between nanostructures of titanate and titanium dioxides via simple wet-chemical reactions. Zhu, H.Y., Lan, Y., Gao, X.P., Ringer, S.P., Zheng, Z.F., Song, D.Y., Zhao, J.C. J. Am. Chem. Soc. (2005) [Pubmed]
  28. Identifying an O2 supply pathway in CO oxidation on Au/TiO2(110): a density functional theory study on the intrinsic role of water. Liu, L.M., McAllister, B., Ye, H.Q., Hu, P. J. Am. Chem. Soc. (2006) [Pubmed]
  29. A spectroscopic and electrochemical approach to the study of the interactions and photoinduced electron transfer between catechol and anatase nanoparticles in aqueous solution. Lana-Villarreal, T., Rodes, A., Pérez, J.M., Gómez, R. J. Am. Chem. Soc. (2005) [Pubmed]
  30. Evidence for a piwi-dependent RNA silencing of the gypsy endogenous retrovirus by the Drosophila melanogaster flamenco gene. Sarot, E., Payen-Groschêne, G., Bucheton, A., Pélisson, A. Genetics (2004) [Pubmed]
  31. Production of tumor necrosis factor-alpha and interleukin-6 by human alveolar macrophages exposed in vitro to coal mine dust. Gosset, P., Lassalle, P., Vanhée, D., Wallaert, B., Aerts, C., Voisin, C., Tonnel, A.B. Am. J. Respir. Cell Mol. Biol. (1991) [Pubmed]
  32. Characterization of the flamenco region of the Drosophila melanogaster genome. Robert, V., Prud'homme, N., Kim, A., Bucheton, A., Pélisson, A. Genetics (2001) [Pubmed]
  33. Silica-induced caspase activation in mouse alveolar macrophages is dependent upon mitochondrial integrity and aspartic proteolysis. Thibodeau, M., Giardina, C., Hubbard, A.K. Toxicol. Sci. (2003) [Pubmed]
  34. Characterization of oak and birch dust-induced expression of cytokines and chemokines in mouse macrophage RAW 264.7 cells. Määttä, J., Majuri, M.L., Luukkonen, R., Lauerma, A., Husgafvel-Pursiainen, K., Alenius, H., Savolainen, K. Toxicology (2005) [Pubmed]
  35. Interfacial synthesis of hollow TiO2 microspheres in ionic liquids. Nakashima, T., Kimizuka, N. J. Am. Chem. Soc. (2003) [Pubmed]
  36. Unusual crystallization behaviors of anatase nanocrystallites from a molecularly thin titania nanosheet and its stacked forms: increase in nucleation temperature and oriented growth. Fukuda, K., Ebina, Y., Shibata, T., Aizawa, T., Nakai, I., Sasaki, T. J. Am. Chem. Soc. (2007) [Pubmed]
  37. Excited-state metal-to-ligand charge transfer dynamics of a ruthenium(II) dye in solution and adsorbed on TiO2 nanoparticles from resonance Raman spectroscopy. Shoute, L.C., Loppnow, G.R. J. Am. Chem. Soc. (2003) [Pubmed]
  38. Heats of adsorption of linear CO species adsorbed on the Au degrees and Ti+delta sites of a 1% Au/TiO2 catalyst using in situ FTIR spectroscopy under adsorption equilibrium. Derrouiche, S., Gravejat, P., Bianchi, D. J. Am. Chem. Soc. (2004) [Pubmed]
  39. Role of bulk thermal defects in the reconstruction dynamics of the TiO2(110) surface. McCarty, K.F., Bartelt, N.C. Phys. Rev. Lett. (2003) [Pubmed]
 
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