201
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Ogoshi K, Akamatsu T, Iishi H, Saito D, Sakaki N, Sekiya C, Matsuura A, Fujita K, Kasugai T. F. New Methods of Disinfection and Sterilization. Dig Endosc 2001. [DOI: 10.1046/j.1443-1661.2000.00056-6.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
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202
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Ogoshi K, Akamatsu T, Iishi H, Saito D, Sakaki N, Sekiya C, Matsuura A, Fujita K, Kasugai T. D. The Actual Practice of Endoscope Washing, Disinfection, and Sterilization. Dig Endosc 2001. [DOI: 10.1046/j.1443-1661.2000.00056-4.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
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203
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Ogoshi K, Akamatsu T, Iishi H, Saito D, Sakaki N, Sekiya C, Matsuura A, Fujita K, Kasugai T. I. Action to Take When a Medical Staff Member is Infected. Dig Endosc 2001. [DOI: 10.1046/j.1443-1661.2000.00056-9.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
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204
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Ogoshi K, Akamatsu T, Iishi H, Saito D, Sakaki N, Sekiya C, Matsuura A, Fujita K, Kasugai T. E. Drying and Storage. Dig Endosc 2001. [DOI: 10.1046/j.1443-1661.2000.00056-5.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
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205
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Yun BS, Fujita KI, Furihata K, Seto H. Absolute stereochemistry and solution conformation of promothiocins. Tetrahedron 2001. [DOI: 10.1016/s0040-4020(01)00979-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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206
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Yamaguchi R, Nakayasu T, Hatano B, Nagura T, Kozima S, Fujita KI. Facile addition reactions of allylsilanes to quinolines and isoquinolines activated by chloroformate ester and a catalytic amount of triflate ion. Tetrahedron 2001. [DOI: 10.1016/s0040-4020(00)00993-5] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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207
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Fujita KI, Nakamura M, Yamaguchi R. Alkoxylation and Amination of Ring-Methyl Group in Pentamethylcyclopentadienyliridium Complexes. Organometallics 2000. [DOI: 10.1021/om000718n] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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208
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Satoh T, Fujita KI, Munakata H, Itoh S, Nakamura K, Kamataki T, Itoh S, Yoshizawa I. Studies on the interactions between drugs and estrogen: analytical method for prediction system of gynecomastia induced by drugs on the inhibitory metabolism of estradiol using Escherichia coli coexpressing human CYP3A4 with human NADPH-cytochrome P450 reductase. Anal Biochem 2000; 286:179-86. [PMID: 11067738 DOI: 10.1006/abio.1999.4775] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
To establish a prediction system for drug-induced gynecomastia in clinical fields, a model reaction system was developed to explain numerically this side effect. The principle is based on the assumption that 50% inhibition concentration (IC(50)) of drugs on the in vitro metabolism of estradiol (E2) to its major product 2-hydroxyestradiol (2-OH-E2) can be regarded as the index for achieving this purpose. By using human cytochrome P450s coexpressed with human NADPH-cytochrome P450 reductase in Escherichia coli as the enzyme, the reaction was examined. Among the nine enzymes (CYP1A1, 1A2, 2A6, 2C8, 2C9, 2C19, 2D6, 2E1, and 3A4) tested, CYP3A4 having a V(max)/K(m) (ml/min/nmol P450) value of 0.32 for production of 2-OH-E2 was shown to be the most suitable enzyme as the reagent. The inhibitory effects of ketoconazole, cyclosporin A, and cimetidine toward the 2-hydroxylation of E2 catalyzed by CYP3A4 were obtained, and their IC(50) values were 7 nM, 64 nM, and 290 microM, respectively. The present results suggest that IC(50) values thus obtained can be substituted as the prediction index for gynecomastia induced by drugs, considering the patients' individual information.
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209
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Ogoshi K, Akamatsu T, Iishi H, Saito D, Sakaki N, Sekiya C, Matsuura A, Fujita K, Kasugai T. B. Infection in Gastrointestinal Endoscopy. Dig Endosc 2000. [DOI: 10.1046/j.1443-1661.2000.00056-2.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
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210
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Tanaka H, Tezuka Y, Fujita KI. Radical Polymerization of Methyl Methacrylate by Captodative Substituted Morpholino Succinonitrile. Polym J 2000. [DOI: 10.1295/polymj.32.711] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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211
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Kushida H, Fujita KI, Suzuki A, Yamada M, Endo T, Nohmi T, Kamataki T. Metabolic activation of N -alkylnitrosamines in genetically engineered Salmonella typhimurium expressing CYP2E1 or CYP2A6 together with human NADPH-cytochrome P450 reductase. Carcinogenesis 2000. [DOI: 10.1093/carcin/21.6.1227] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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212
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Kushida H, Fujita KI, Suzuki A, Yamada M, Endo T, Nohmi T, Kamataki T. Metabolic activation of N-alkylnitrosamines in genetically engineered Salmonella typhimurium expressing CYP2E1 or CYP2A6 together with human NADPH-cytochrome P450 reductase. Carcinogenesis 2000. [DOI: 10.1093/carcin/21.5.227] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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213
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Murashima T, Tamai R, Nishi K, Nomura K, Fujita KI, Uno H, Ono N. Synthesis and X-ray structure of stable 2H-isoindoles. ACTA ACUST UNITED AC 2000. [DOI: 10.1039/a908641b] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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214
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Fujita KI, Hamada T, Yamaguchi R. dppm and hydrido-bridged dinuclear complexes of iridium. Synthesis and structures of [(IrCp*)2(μ-dppm)(μ-H)(μ-X)]2+ (X = Cl, OMe, OH, or H). ACTA ACUST UNITED AC 2000. [DOI: 10.1039/b001239o] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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215
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Fujita KI, Watanabe K, Oishi A, Ikeda Y, Taguchi Y. Preparation of Polymer-Supported Selenocyanates and their Application to Solid-Phase Oxyselenenylation-Deselenylation. Synlett 1999. [DOI: 10.1055/s-1999-2954] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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216
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Fujita KI, Yamaguchi R. Alkoxylation of Ring-Methyl Group in Pentamethylcyclopentadienyliridium Complexes. A Facile Synthesis of (C5Me4CH2OR)IrL2(R = Et, Me, andiPr). CHEM LETT 1999. [DOI: 10.1246/cl.1999.707] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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217
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Mitsudo TA, Suzuki T, Zhang SW, Imai D, Fujita KI, Manabe T, Shiotsuki M, Watanabe Y, Wada K, Kondo T. Novel Ruthenium Complex-Catalyzed Dimerization of 2,5-Norbornadiene to Pentacyclo[6.6.0.02,6.03,13.010,14]tetradeca-4,11-diene Involving Carbon−Carbon Bond Cleavage. J Am Chem Soc 1999. [DOI: 10.1021/ja9835741] [Citation(s) in RCA: 68] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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218
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Yamaguchi R, Tanaka M, Matsuda T, Fujita KI. A highly enantioselective addition reaction of a chiral allylsilane to an activated N-acylisoquinolinium ion. Chem Commun (Camb) 1999. [DOI: 10.1039/a906999b] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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219
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Kondo T, Uenoyama SY, Fujita KI, Mitsudo TA. First Transition-Metal Complex Catalyzed Addition of Organic Disulfides to Alkenes Enables the Rapid Synthesis ofvicinal-Dithioethers. J Am Chem Soc 1999. [DOI: 10.1021/ja983497+] [Citation(s) in RCA: 99] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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220
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Fujita KI, Kanakubo M, Ushijima H, Oishi A, Ikeda Y, Taguchi Y. Asymmetric [2,3]Sigmatropic Rearrangement of Optically Active Allylic Selenides. Synlett 1998. [DOI: 10.1055/s-1998-5739] [Citation(s) in RCA: 3] [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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221
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Ping X, Akeda Y, Fujita KI, Tanaka T, Taniguchi M. The mode of action of AKD-2C, an antifungal antibiotic from Streptomyces sp. OCU-42815. J Antibiot (Tokyo) 1998; 51:852-6. [PMID: 9820236 DOI: 10.7164/antibiotics.51.852] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The mechanism of the antifungal action of AKD-2C was studied by using Torulaspora delbrueckii IFO 1621 as a model. AKD-2C slightly inhibited the incorporation of radioactive precursors into protein, RNA and lipid, but not into DNA. On the other hand, AKD-2C greatly enhanced the leakage of K+ ions from treated cells and showed a potent effect on liposomal glucose leakage. Using electron microscopic studies, though drastic morphological changes were not observed, an increase in cell membrane irregularities and swelling of the mitochondria caused by AKD-2C were demonstrated. These results suggest that the antifungal action of AKD-2C is due to effects on the yeast cell membrane.
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222
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Yamaguchi R, Omoto Y, Miyake M, Fujita KI. A Highly Chemo- and Regioselective N-Acylative Alkynylation of Quinolines with Alkynylsilanes Promoted by Triflate Ion. CHEM LETT 1998. [DOI: 10.1246/cl.1998.547] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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223
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Hayakawa Y, Kim JW, Adachi H, Shin-ya K, Fujita KI, Seto H. Structure of Apoptolidin, a Specific Apoptosis Inducer in Transformed Cells. J Am Chem Soc 1998. [DOI: 10.1021/ja9732643] [Citation(s) in RCA: 86] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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224
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Takenoshita S, Mogi A, Tani M, Osawa H, Sunaga H, Kakegawa H, Yanagita Y, Koida T, Kimura M, Fujita KI, Kato H, Kato R, Nagamachi Y. Absence of mutations in the analysis of coding sequences of the entire transforming growth factor-beta type II receptor gene in sporadic human breast cancers. Oncol Rep 1998; 5:367-71. [PMID: 9468559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The transforming growth factor-beta (TGFbeta) binds the type II TGFbeta growth factor receptor (TGFbetaRII) to inhibit the growth of most epithelial tissues. Most human colon and gastric cancers with microsatellite instability (MI) have frameshift mutations in polynucleotide repeats within the TGFbetaRII coding region; these mutations truncate the receptor protein and disable the serine/threonine kinase to produce TGF-beta resistance. To further investigate the type, frequency and tissue distribution of TGFbetaRII gene mutations, in this study, we examined 36 sporadic breast cancers. We previously produced eight intron based primer pairs for mutational analysis of the entire coding region of the TGFbetaRII gene. Using these primers, we developed protocols for polymerase chain reaction-single strand conformational polymorphism (PCR-SSCP) analysis of PCR products from genomic DNA samples of 36 breast cancer patients and we tested them for microsatellite instability (MI) at eight microsatellite loci. One case demonstrated MI (2.8%) and we found no mutations. These and other recent data indicate that TGFbetaRII mutations are essentially confined to colon and gastric cancers with MI. The narrow spectrum of tissues containing RII mutations illustrates the complexity of genetic checkpoints in human carcinogenesis.
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225
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Takenoshita S, Mogi A, Tani M, Osawa H, Sunaga H, Kakegawa H, Yanagita Y, Koida T, Kimura M, Fujita KI, Kato H, Kato R, Nagamachi Y. Absence of mutations in the analysis of coding sequences of the entire transforming growth factor-beta type II receptor gene in sporadic human breast cancers. Oncol Rep 1998. [DOI: 10.3892/or.5.2.367] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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226
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Fujita KI, Ito K, Kondo T, Mitsudo TA. Reaction of a π-vinylcarbeneiron complex with aromatic diamines: formation and structure of ferracyclopentenone(diamine) complexes. J Organomet Chem 1997. [DOI: 10.1016/s0022-328x(96)06840-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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227
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Fujita KI, Ito K, Kondo T, Mitsudo TA. Reaction of a (π-Vinylcarbene)iron Complex with Tricarbonyl(η4-1,5-cyclooctadiene)ruthenium. Preparation, Structure, and Reactivity of Novel (μ-Vinylcarbene)(Fe−Ru) Complexes. Organometallics 1997. [DOI: 10.1021/om960904m] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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228
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Fujita KI, Murata K, Iwaoka M, Tomoda S. Design of optically active selenium reagents having a chiral tertiary amino group and their application to asymmetric inter- and intramolecular oxyselenenylations. Tetrahedron 1997. [DOI: 10.1016/s0040-4020(96)01166-0] [Citation(s) in RCA: 70] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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229
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Fujita KI, Ikeda M, Kondo T, Mitsudo TA. Novel Early-late Transition Metal Complexes. The First Thiolato Bridged Titanium-Ruthenium Complexes. CHEM LETT 1997. [DOI: 10.1246/cl.1997.57] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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230
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Murata K, Hayakawa T, Fujita KI. Excellent effect of lithium-doped sulfated zirconia catalysts for oxidative coupling of methane to give ethene and ethane. Chem Commun (Camb) 1997. [DOI: 10.1039/a606624k] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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231
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Murashima T, Tamai R, Fujita KI, Uno H, Ono N. Ambident reactivity of nitro heteroaromatic anions. Tetrahedron Lett 1996. [DOI: 10.1016/0040-4039(96)01918-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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232
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Fujita KI, Watanabe Y, Mitsudo TA. Conversion of Trifluoromethyl-Substitutedπ-Vinylcarbeneiron to Difluorotrimethylenemethane Complexes. CHEM LETT 1996. [DOI: 10.1246/cl.1996.513] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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233
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Shoji T, Fujita KI, Furihata E, Kurihara K. Olfactory responses of a euryhaline fish, the rainbow trout: adaptation of olfactory receptors to sea water and salt-dependence of their responses to amino acids. J Exp Biol 1996; 199:303-10. [PMID: 9317854 DOI: 10.1242/jeb.199.2.303] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Salmonid fishes are able to survive in both fresh water and sea water. Concentrations of NaCl in fresh water and sea water are 0.5 and 493 mmol l-1, respectively, and, hence, salt concentrations in the medium at the olfactory epithelium are greatly changed when the fish migrate between fresh water and sea water. We used the rainbow trout, which is a salmonid fish, to examine the adaptation mechanisms of the olfactory receptors to high concentrations of salts in sea water. Application of sea water to the olfactory epithelium elicited only a very small response in the olfactory nerve, but 500 mmol l-1 NaCl elicited a large response which did not adapt to a spontaneous level with time. It is considered that the olfactory nerve becomes fatigued when the olfactory epithelium is exposed to 500 mmol l-1 NaCl for long periods. We found that the presence of 10 mmol l-1 Ca2+ in sea water inhibited the response to 500 mmol l-1 NaCl, suggesting that Ca2+ in sea water is essential for adaptation of the olfactory receptors to sea water. In the second part of the study, we examined whether the olfactory nerve responses to amino acids, potent stimulants for fish, were altered between fresh water and sea water. The magnitudes of the responses to the six amino acids examined were similar in artificial pond water and artificial sea water, indicating that a large change in NaCl concentration between fresh and sea water does not affect the olfactory nerve responses to amino acids. We used fish reared in fresh water and fish acclimated to sea water and obtained similar results. It was concluded that the tolerance of the olfactory receptors for large changes in osmotic pressure is not acquired while fish are maintained in fresh or sea water, but that the receptors of these euryhaline fish naturally provide the tolerance.
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234
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Fujita K, Kyu T, St. John Manley R. Miscible Blends of Two Crystalline Polymers. 3. Liquid−Liquid Phase Separation in Blends of Poly(vinylidene fluoride)/Poly(butylene adipate). Macromolecules 1996. [DOI: 10.1021/ma950692p] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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235
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Murashima T, Fujita KI, Ono K, Ogawa T, Uno H, Ono N. A new facet of the reaction of nitro heteroaromatic compounds with ethyl isocyanoacetate. ACTA ACUST UNITED AC 1996. [DOI: 10.1039/p19960001403] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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236
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Fujita KI, Murata K, Iwaoka M, Tomoda S. Asymmetric methoxyselenenylation of olefins using an optically active diaryl diselenide derived from d-mannitol. Tetrahedron Lett 1995. [DOI: 10.1016/0040-4039(95)00976-j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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237
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Umemoto K, Kikuchi J, Narita M, Fujita K, Asakura T. Conformations of Synthetic Model Peptides for Plasmodium falciparum Circumsporozoite Protein in Me2SO by 1H NMR and Distance Geometry Calculations. Polym J 1995. [DOI: 10.1295/polymj.27.347] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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238
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Fujita KI, Murata K, Iwaoka M, Tomoda S. Asymmetric intramolecular selenoetherification and selenolactonization using an optically active diaryl diselenide derived from D-mannitol. ACTA ACUST UNITED AC 1995. [DOI: 10.1039/c39950001641] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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239
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Fujita KI, Iwaoka M, Tomoda S. Synthesis of Diaryl Diselenides Having Chiral Pyrrolidine Rings with C2Symmetry. Their Application to the Asymmetric Methoxyselenenylation oftrans-β-Methylstyrenes. CHEM LETT 1994. [DOI: 10.1246/cl.1994.923] [Citation(s) in RCA: 80] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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240
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Kohmoto M, Tanaka J, Yoshida M, Kasamatsu T, Fujita KI, Zhong WB, Kaidou T, Tamura J, Imamura M. Plasma membrane fluidity during regeneration and atrophy of the rat liver following portal branch ligation. Eur Surg Res 1994; 26:221-9. [PMID: 7957458 DOI: 10.1159/000129339] [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: 01/28/2023]
Abstract
Dynamic changes in liver plasma membrane fluidity caused by regeneration and atrophy were assessed in rats following portal branch ligation (PBL). The portal branch, which perfuses 70% of the liver, was ligated with 5-0 prolene, and liver plasma membranes were isolated by ultracentrifugation. The membrane fluorescence polarization was measured as an index of membrane fluidity using 1,6-diphenyl-1,3,5-hexatriene (DPH) as the probe dye. In nonligated lobes, a significant decrease in fluorescence polarization was observed 12 and 24 h after PBL (0.171 +/- 0.004, p < 0.01 and 0.165 +/- 0.005, p < 0.001, respectively) as compared to the controls (0.181 +/- 0.002). The fluorescence polarization values then gradually returned to near control levels. In contrast, in the ligated lobes, the fluorescence polarization had increased by 12 hours after PBL (0.196 +/- 0.002, p < 0.01), and remained significantly elevated (p < 0.01) for up to 1 week after PBL, gradually returning to control levels within 3 weeks. The membrane composition was also evaluated by analyzing the cholesterol/phospholipid (C/P) ratio. A significant increase in the C/P ratio was detected in the ligated lobes 12 h and 3 days after PBL, but there was no significant difference in fluorescence polarization values between nonligated lobes and controls. These results suggest that alterations in membrane fluidity play an important role in the regenerative and atrophic processes of the liver following portal branch ligation.
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241
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Tanaka T, Hirama M, Fujita KI, Imajo S, Ishiguro M. Solution structure of the antitumour antibiotic neocarzinostatin, a chromophore–protein complex. ACTA ACUST UNITED AC 1993. [DOI: 10.1039/c39930001205] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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242
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Fujita KI, Iwaoka M, Tomoda S. Asymmetric Oxyselenenylation of Olefins Using Optically Active Selenobinaphthyls andd-Menthol as a Nucleophile. CHEM LETT 1992. [DOI: 10.1246/cl.1992.1123] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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243
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Tomoda S, Fujita KI, Iwaoka M. Double differentiation in asymmetric methoxyselenenylation of trans-β-methylstyrene. ACTA ACUST UNITED AC 1990. [DOI: 10.1039/c39900000129] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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244
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Kyu T, Fujita K, Cho MH. Structure and orientation development in biaxial stretching of ultrahigh molecular weight polyethylene gel films. POLYM ENG SCI 1989. [DOI: 10.1002/pen.760290606] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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245
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Shiro K, Fujita KI, Suehiro S, Kawai H. Static and dynamic deformation mechanisms of a high-density polyethylene having rownucleated crystalline texture of a-axis orientation as observed by orientation distribution function of crystallites. POLYMER 1983. [DOI: 10.1016/0032-3861(83)90244-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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246
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Fujita KI, Daio M, Okumura R, Suehiro S, Nomura S, Kawai H. Rheo-Optical Studies on the Deformation Mechanism of Semicrystalline Polymers XVI. Alpha and Beta Mechanical Dispersions of Spherulitic Polypropylene and Polybutene-1 and the Dynamic Orientation Distribution Function of Crystallites. Polym J 1983. [DOI: 10.1295/polymj.15.449] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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247
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Fujita KI, Suehiro S, Nomura S, Kawai H. Rheo-Optical Studies on the Deformation Mechanism of Semicrystalline Polymers. XIII. Uniaxial Deformation Mechanism of Polyethylene Spherulites as Observed by Orientation Distribution Function of Crystallites. Polym J 1982. [DOI: 10.1295/polymj.14.545] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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248
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Kusumi T, Kinoshita T, Fujita KI, Kakisawa H. A NEW MACROCYCLIC SESTERTERPENE ACID FROMCEROPLASTES CERIFERUS. CHEM LETT 1979. [DOI: 10.1246/cl.1979.1129] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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249
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Suehiro S, Kyu T, Fujita KI, Kawai H. Rheo-Optical Studies on the Deformation Mechanism of Semicrystalline Polymers. V. Quantitative Analysis of Grain-Boundary Relaxation in Polyethylene. Polym J 1979. [DOI: 10.1295/polymj.11.331] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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250
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Seto H, Miyazaki Y, Fujita KI, Ōtake N. Studies on the ionophorous antibiotics X. The assignment of 13C-NMR spectrum of salinomycin. Tetrahedron Lett 1977. [DOI: 10.1016/s0040-4039(01)83781-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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