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Yoshiyuki Kawakami Ichiro Ueno Tsutomu Katsuyama Ken'ichi Furihata Hideki Matsumoto 《Microbiology and immunology》1994,38(11):891-895
Epidemiological typing, based on restriction fragment length polymorphism (RFLP) by pulsed-field gel electrophoresis (PFGE), was attempted for the 38 clinical isolates of Moraxella catarrhalis obtained at Shinshu University Hospital during the years 1987 and 1993. Digestion with SmaI or NotI generated well separable, 12 to 5 genomic DNA fragments ranging from 1,000 kb to 30 kb and the strains could be classified into 14 or 13 types, respectively. The electrophoretic profile differed with the strain in most of them and was hence useful to distinguish the each strain. Investigation for their RFLP have, however, suggested that majority of them, including the type strain ATCC25238, may have derived from a common ancestor. 相似文献
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M Tozuka H Hidaka M Miyachi K Furihata T Katsuyama M Kanai 《Biochimica et biophysica acta》1992,1165(1):61-67
A new apolipoprotein complex designated as the apo(AII-E2-AII) complex was identified in the lipoprotein fractions of human plasma with apoE phenotypes containing apoE2 (E4/E2, E3/E2, and E2/E2). Sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) followed by an immunoblotting assay using anti-apoE or anti-apoAII antibodies, established that the apo(AII-E2-AII) complex, with a molecular weight of 58,000, was identical to the complex consisting of apoE and apoAII, and that it also dissociated following reduction with beta-mercaptoethanol. This new complex was also demonstrated to be distinct from the apo(E-AII) complex and apoE monomer by isoelectric focusing, in the samples that were not treated with beta-mercaptoethanol. In apoE phenotype E3/E2, the apo(AII-E2-AII) complex was primarily included in the high-density lipoprotein (HDL, 1.063 < d < 1.21 g/ml) fraction, but was also observed in a small quantity in the very-low-density lipoprotein (VLDL, d < 1.006 g/ml) fraction. For further characterization, the apo(AII-E2-AII) complex was isolated by preparative SDS-PAGE, and no contamination of apo(E-AII) complex and apoE monomer was detected by immunoblotting assay using an anti-apoE antibody. It was confirmed by an enzyme-linked immunosorbent assay (ELISA) system that a molecular ratio between apoAII monomer and apoE in the isolated apo(AII-E2-AII) complex was approx. 2, when the apo(E-AII) complex was used as a standard with the ratio of 1:1. It indicates that the apo(AII-E2-AII) complex is formed from two molecules of apoAII monomer and one molecule of apoE.(ABSTRACT TRUNCATED AT 250 WORDS) 相似文献
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Hydrocortisone-induced enhancement of expression and changes in methylation of pepsinogen genes in stomach mucosa of the developing rat 总被引:1,自引:0,他引:1
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M Terai C Furihata T Matsushima T Sugimura 《Archives of biochemistry and biophysics》1976,176(2):621-629
(i) Three forms of cyclic AMP phosphodiesterases (3′,5′-cyclic AMP 5′-nucleotidohydrolase, EC 3.1.4.17), F1, F2-I and F2-II, were partially purified from the soluble fraction of rat pancreas in the presence of excess protease inhibitors by DEAE-cellulose column chromatography and gel filtration and were characterized. (ii) F2-II, which was purified 31-fold, exhibited a single peak of activity on both polyacrylamide-gel electrophoresis and isoelectric focusing. The enzyme had a molecular weight of about 70,000, an isoelectric point of 3.9, and an optimal pH around 8.5 and required Mg2+ or Mn2+ but not Ca2+ for activity. The Km values of this enzyme for cyclic AMP and cyclic GMP were 1 and 50 μm, respectively, while V values of this enzyme for cyclic AMP and cyclic GMP were 36.1 and 12.6 nmol min?1 (mg of protein)?1, respectively. Cyclic GMP competitively inhibited hydrolysis of cyclic AMP by this enzyme. Ro20-1724 [4-(3-butoxy-4-methoxybenzyl)-2-imidazolidinone] also inhibited hydrolysis of cyclic AMP competitively, with a Ki value of 1 μm. (iii) Fraction F1, which was purified 10-fold, had a molecular weight of more than 500,000 and required Mg2+ for activity. Its Km values for cyclic AMP were 1 and 5 μm. Its Km value for cyclic GMP was 45 μm. Fraction F2-I, which was purified 26-fold, had a molecular weight of about 70,000. The ratio of the initial velocity of hydrolysis of cyclic GMP to that of cyclic AMP was 0.5 at a substrate concentration of 1 μm. 相似文献
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Ryuhei Sasaki Michiko Mura Toshiyuki Takeuchi Chie Furihata Taijiro Matsushima Takashi Sugimura 《Biochimica et Biophysica Acta (BBA)/General Subjects》1976,428(3):619-626
Studies were made on changes in the contents of α-amylase (EC 3.2.1.1) in the pancreas and parotid gland of rats during postnatal devlopment, on the premature induction of this enzyme by hormones and on the existence of specific glucocorticoid receptors in these tissues.The amylase content in the pancreas increased from the 9th day after birth and reached the adult level on the 28th day, its content in the parotid gland increased rapidly from the 16th to 28th day after birth and then rose more gradually to the adult level.Injection of dexamethasone into rats 6–8 days after birth induced increase in the amylase of the pancreas but not the parotid gland. However, injection of dexamethasone into weanling rats 21–23 days after birth resulted in precocious induction of amylase in both tissues.Specific glucocorticoid receptors were detectable in the parotid gland of rats from 6 days after birth but were almost undetectable in the pancreas until adolescence. 相似文献
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Furihata Ryuji Kizuki Jun Yamano Yuya Mizoguchi Yasuhide Nakajima Suguru Nagai Kou Kaneko Yoshiyuki Yamada Koju Suzuki Masahiro Uchiyama Makoto 《Sleep and biological rhythms》2020,18(2):155-157
Sleep and Biological Rhythms - A 39-year-old married woman was referred to a psychiatry outpatient clinic for treatment of major depressive disorder (MDD). The dose of zolpidem she had been taking... 相似文献