151
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Hirata Y, Mataga N, Sakata Y, Misumi S. Photoionization of bis(dimethylamino)tetrahydropyrene. Importance of solvent-solute exciplex interactions. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100232a009] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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152
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Mukai Y, Koyama Y, Hirata Y, Mataga N. Configurational changes of retinal in the triplet state: picosecond time-resolved absorption spectroscopy on the 7-cis, 11-cis, and 13-cis isomers and high-performance liquid chromatography analysis of photoisomerization. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100327a018] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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153
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Hirota N, Baba M, Hirata Y, Nagaoka S. ODMR and EPR studies of the triplet states of aliphatic and aromatic carbonyls. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100489a008] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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154
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Hirata Y, Mataga N. Solvation dynamics of electron ejected by photoionization of p-phenylenediamine in several alcohols: temperature effect studied by picosecond transient absorption measurements. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100176a010] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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155
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Hirata Y, Okada T, Nomoto T. Photophysical properties of diphenylacetylene derivatives in solution phase III: thermal repopulation of the second excited singlet state (S2) of (aminophenyl)phenylacetylene. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100140a025] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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156
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Hirata Y, Mataga N. Monophotonic ionization through an ion pair: N,N,N',N'-tetramethyl-p-phenylenediamine in various alcohols. 2. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100265a020] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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157
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Hirata Y, Ohta M, Okada T, Mataga N. Direct observation of photodissociation of tetraphenylhydrazine and its derivatives in the solution phase: picosecond study of nitrogen-nitrogen bond rupture in the fluorescence state. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100183a002] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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158
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Hirata Y, Murata N, Tanioka Y, Mataga N. Dynamic behavior of solvated electrons produced by photoionization of indole and tryptophan in several polar solvents. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100348a027] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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159
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Hirata Y, Kanda Y, Mataga N. Picosecond laser photolysis and transient photocurrent studies of the ionic dissociation mechanism of heteroexcimers: pyrene-N,N-dimethylaniline and pyrene-p-dicyanobenzene systems in polar solvents. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100233a002] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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160
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Hirata Y, Mataga N, Sakata Y, Misumi S. Direct observation of optically generated electron-cation geminate pair in nonpolar solvents. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100281a001] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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161
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Hirata Y, Mataga N, Sakata Y, Misumi S. Electron photoejection from the relaxed fluorescence state of bis(dimethylamino)tetrahydropyrene in acetonitrile solution. Importance of solute-solvent exciplex interactions. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100206a010] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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162
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Hashimoto H, Koyama Y, Hirata Y, Mataga N. S1 and T1 species of .beta.-carotene generated by direct photoexcitation from the all-trans, 9-cis, 13-cis, and 15-cis isomers as revealed by picosecond transient absorption and transient Raman spectroscopies. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100161a022] [Citation(s) in RCA: 77] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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163
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Abstract
In the physio-mitotic theory, general mitosis consists of two different types: maturation and duplication. While being co-regulated by mechanisms involving maturation and duplication factors, these two types of mitotic activities each play a respective role in the antagonistic histological development of the other. According to the theory of systematic organization, each type of organic tissue is always developed and established under certain physiological conditions. As an organoid tissue, cancerous tissue must also fundamentally develop according to that theory. Consequently, a new concept of cancer development should be devised based on the physio-mitotic theory.
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164
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Morishima Y, Tominaga Y, Kamachi M, Okada T, Hirata Y, Mataga N. Photoinduced charge separation by chromophores encapsulated in the hydrophobic compartment of amphiphilic polyelectrolytes with various aliphatic hydrocarbons. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100168a058] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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165
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Hirata Y, Mataga N. Photoionization of aromatic diamines in electron-accepting solvents: formation of short-lived ion pairs. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j150658a032] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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166
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Hirata Y, Mataga N. Monophotonic ionization through a long-lived ion pair: N,N,N',N'-tetramethyl-p-phenylenediamine in acetonitrile solution. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100233a009] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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167
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Hirata Y, Mataga N. Monophotonic ionization through an ion pair: N,N,N',N'-tetramethyl-p-phenylenediamine in various alcohols. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100240a006] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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168
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Shizuka H, Matsui K, Hirata Y, Tanaka I. Isotope and substituent effects on the intramolecular proton transfer in the excited state of 6-(2-hydroxy-5-methylphenyl)-s-triazines. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100539a008] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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169
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Okamura T, Sancar A, Heelis PF, Hirata Y, Mataga N. Doublet-quartet intersystem crossing of flavin radical in DNA photolyase. J Am Chem Soc 2002. [DOI: 10.1021/ja00197a082] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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170
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Ko SS, Finan JM, Yonaga M, Kishi Y, Uemura D, Hirata Y. Stereochemistry of palytoxin. Part 2. C1-C6, C47-C74, and C77-C83 segments. J Am Chem Soc 2002. [DOI: 10.1021/ja00389a099] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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171
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Abstract
In the physio-mitotic theory described previously by the authors (10), general mitosis consists of two different types: essential duplication and converted maturation. These two types of mitosis are regulated by mechanisms involving maturation and duplication factors, and each plays a role in the antagonistic histological development of the other.According to this theory, every kind of leukocyte is produced through mitosis in the bone marrow and migrates during cell turnover to the bloodstream. However, in leukemia a highly excessive number of leukocytes and leuko-blastocysts appear in the bloodstream. This excessive amount is greater than the physiological capability of cells in the bone marrow alone. Such an extremely large group of cells would not be produced without being dependent on an extremely high ratio of produced leukocytes to original stem cells. This extremely high ratio may be due to a systematic pathological deterioration of the mitotic maturation ability during the maturation process of the leuko-blastocysts. Consequently, restoration of the deterioration to the original mitotic maturation response of the normal leuko-blastocysts may be an essential event in achieving leukemia eradication, rather than persistent destruction of individual leukemic leukocytes.
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172
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Abstract
Using an ionized iodine compound, it may be possible to transmit a weak effect of the digestive enzymes from the duodenal lumen to the cytoplasmic structures beyond the cell membrane in general organic tissues. Povidone-iodine is easily obtainable at present, and may be the most suitable ionized material for the transmission of the enzymatic effects to body tissues. Consequently, to remove certain cellular byproducts accumulated abnormally in cancerous cytoplasm, and to achieve cancer prevention and eradication, a method of using povidone-iodine, as a conceptual model, should be devised and developed in the future.
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173
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Tamai N, Nomoto T, Tanaka F, Hirata Y, Okada T. Solvation Dynamics of the Excited 1,2-(p-Cyano-p‘-Methoxydiphenyl)-Ethyne†. J Phys Chem A 2002. [DOI: 10.1021/jp0125092] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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174
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Hirata Y. Molecular Dynamics Simulation Study of the Rotational and Translational Motions of Liquid Acetonitrile. J Phys Chem A 2002. [DOI: 10.1021/jp012513d] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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175
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Saiura A, Sata M, Hirata Y, Nagai R, Makuuchi M. Tranilast inhibits transplant-associated coronary arteriosclerosis in a murine model of cardiac transplantation. Eur J Pharmacol 2001; 433:163-8. [PMID: 11755148 DOI: 10.1016/s0014-2999(01)01501-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Accelerated coronary arteriosclerosis remains a major problem for the long-term survival of cardiac transplant recipients. However, the pathogenesis of graft vasculopathy is poorly understood and there is no effective therapy. Tranilast is a promising drug that may prevent post-angioplasty restenosis. Here, we investigated whether orally administered tranilast inhibits the development of intima hyperplasia in a mouse model of cardiac transplantation. Cardiac allografts from BALB/c mice were transplanted heterotopically into C3H/He mice. Mice were administered either vehicle or tranilast everyday by gavage. Morphometrical analysis of the cardiac allografts harvested at 2 months revealed that the administration of tranilast significantly reduced the development of coronary atherosclerosis. In the mice treated with tranilast, up-regulation of the cyclin-dependent kinase inhibitor p21 was observed in the allografts, accompanied by a reduced number of proliferating cells. Tranilast also suppressed transforming growth factor-beta (TGF-beta) expression. Tranilast may be effective in preventing transplant-associated arteriosclerosis through its anti-inflammatory and anti-proliferative effects.
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