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Ueda Y, Takahashi J, Katsuno Y, Saito H, Kasahara T, Suwa K, Sugihara Y, Endo A. [Standards and Regulations Committee Reports]. Nihon Hoshasen Gijutsu Gakkai Zasshi 2023; 79:1408-1427. [PMID: 38123308 DOI: 10.6009/jjrt.2023-2285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Affiliation(s)
| | | | | | - Hiroki Saito
- Department of Medical Radiology Faculty of Medical Technology, Teikyo University
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Muramatsu Y, Okada N, Negishi T, Maeda S, Sekimoto M, Kasahara T, Mimoto S, Sugihara Y, Endo A. [Standards and Regulations Committee Reports]. Nihon Hoshasen Gijutsu Gakkai Zasshi 2022; 78:1511-1530. [PMID: 36543235 DOI: 10.6009/jjrt.2022-2118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Maamoun I, Eljamal O, Falyouna O, Eljamal R, Sugihara Y. Stimulating effect of magnesium hydroxide on aqueous characteristics of iron nanocomposites. Water Sci Technol 2019; 80:1996-2002. [PMID: 32144231 DOI: 10.2166/wst.2020.027] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Nanoscale zero-valent iron (nFe0) tends to aggregate, which dramatically affects its aqueous characteristics and thereby its potential in water treatment applications. Hence, the main aim of this study is to overcome such drawback of nFe0 by a new modification approach. Iron nanoparticles were modified by magnesium hydroxide (Mg(OH)2) addition with different mass ratios in order to form a nanocomposite with superior aqueous characteristics. The optimization process of the iron-magnesium nanocomposite (nFe0-Mg) was conducted through different approaches including settlement tests, morphology and crystallinity investigations and particle size estimation. The addition of Mg(OH)2 to nFe0 with a Mg/Fe coating ratio of 100% resulted in stimulated stability of the particles in aqueous suspension with around 95% enhancement in the suspension efficiency compared to that of nFe0. Results showed that the average particle size and degree of crystallinity of nFe0-Mg(Mg/Fe:100%) decreased by 46.7% and increased by 16.8%, respectively, comparing with that of nFe0. Additionally, the iron core of the synthesized nFe0 was adequately protected from aqueous corrosion with lower iron oxides leachates after the optimal modification with Mg(OH)2. Furthermore, Mg(OH)2 coating resulted in a stimulated adsorption reactivity of the composite towards phosphorus (P) with around 3.13% promotion in the removal efficiency comparing to that of nFe0.
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Harada K, Sugisawa H, Sugihara Y, Yanagisawa S, Shimmei M. JOB DEMANDS, COPING RESOURCES, AND JOB SATISFACTION AMONG OLDER EMPLOYED MEN IN JAPAN. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.1806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Harada K, Sugisawa H, Sugihara Y, Yanagisawa S, Shimmei M. PERCEIVED NEIGHBORHOOD ENVIRONMENT, SOCIAL SUPPORT, AND PHYSICAL ACTIVITY AMONG ELDERLY JAPANESE. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- K. Harada
- Jissen Women’s University, Tokyo, Japan,
| | | | - Y. Sugihara
- Tokyo Metropolitan University, Tokyo, Japan,
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Sugisawa H, Harada K, Sugihara Y, Yanagisawa S, Shimmei M. PSYCHOSOCIAL MEDIATORS BETWEEN SOCIOECONOMIC STATUS AND PHYSICAL ACTIVITY IN OLDER JAPANESE ADULTS. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.4229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- H. Sugisawa
- J.F. Oberlin University, Machida-shi, Tokyo, Japan,
| | - K. Harada
- Jissen Women’s University, Shibuya-ku, Japan,
| | - Y. Sugihara
- Tokyo Metropolitan University, Hachioji-shi, Japan,
| | | | - M. Shimmei
- Tokyo Metropolitan Institutute of Gerontology, Itabashi-ku, Japan
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Sugihara Y. FACTORS RELATING TO SATISFACTION AND MOTIVATION OF DISTRICT WELFARE COMMISSIONERS IN JAPAN. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Y. Sugihara
- Tokyo Metropolitan University, Hachioji-shi, Tokyo, Japan
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Misawa M, Yamamura F, Mori Y, Sugihara Y, Wada Y, Wakamura K, Hayashi T, Miyachi H, Kudo SE. A Case of an Esophageal Cancer Patient Surviving for Over 4 Years After Chemoradiotherapy and Subsequent Chemotherapy. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt460.59] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Okano T, Harata Y, Sugihara Y, Sakaino R, Tsuchida R, Iwai K, Seki K, Araki K. Absorbed and effective doses from cone beam volumetric imaging for implant planning. Dentomaxillofac Radiol 2009; 38:79-85. [PMID: 19176649 DOI: 10.1259/dmfr/14769929] [Citation(s) in RCA: 104] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES Volumetric CT using a cone beam has been developed by several manufacturers for dentomaxillofacial imaging. The purpose of this study was to measure doses for implant planning with cone beam volumetric imaging (CBVI) in comparison with conventional multidetector CT (MDCT). METHODS The two CBVI systems used were a 3D Accuitomo (J. Morita), including an image-intensifier type (II) and a flat-panel type (FPD), and a CB MercuRay (Hitachi). The 3D Accuitomo operated at 80 kV, 5 mA and 18 s. The CB MercuRay operated at 120 kV, 15 mA, 9.8 s. The MDCT used was a HiSpeed QX/i (GE), operated at 120 kV, 100 mA and 0.7 s, and its scan length was 77 mm for both jaws. Measurement of the absorbed tissue and organ doses was performed with an Alderson phantom, embedding the radiophotoluminescence glass dosemeter into the organs/tissues. The values obtained were converted into the absorbed dose. The effective dose as defined by the International Commission on Radiological Protection was then calculated. RESULTS The absorbed doses of the 3D Accuitomo of the organs in the primary beam ranged from 1-5 mGy, and were several to ten times lower than other doses. The effective dose of the 3D Accuitomo ranged from 18 muSv to 66 muSv, and was an order of magnitude smaller than the others. In conclusion, these results show that the dose in the 3D Accuitomo is lower than the CB MercuRay and much less than MDCT.
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Affiliation(s)
- T Okano
- Department of Radiology, Showa University School of Dentistry, Tokyo, Japan.
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Yano H, Sugihara Y, Shirai H, Wagatsuma Y, Kusada O, Matsuda T, Kuroda S, Higaki S. Phthalocyanine-dyed fibers adsorb allergenic proteins. Amino Acids 2006; 30:303-5. [PMID: 16583306 DOI: 10.1007/s00726-006-0294-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2005] [Accepted: 01/25/2006] [Indexed: 10/24/2022]
Abstract
Phthalocyanine (Pc)-dyed fiber is reported to reduce atopic symptoms in some patients when they use underwear made of the fiber. We investigated the adsorption of allergens on Pc-fiber. Pc-fiber trapped house dust/pollen/food allergens with varied molecular weight and pI. The adsorbed allergens were released in the presence of mild detergent. Pc-fiber did not change the molecular weight or disulfide bonding of the allergens. These observations imply that Pc-fiber is applicable as an "allergen trap" for a wide variety of products.
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Affiliation(s)
- H Yano
- National Institute of Crop Science, Tsukuba, Ibaraki, Japan. hyano.@affrc.go.jp
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Sugihara Y. Organobismuth Chemistry. J Organomet Chem 2002. [DOI: 10.1016/s0022-328x(02)01147-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Kimura I, Sasamoto H, Sasamura T, Sugihara Y, Ohgaku S, Kobayashi M. Reduction of incretin-like salivatin in saliva from patients with type 2 diabetes and in parotid glands of streptozotocin-diabetic BALB/c mice. Diabetes Obes Metab 2001; 3:254-8. [PMID: 11520305 DOI: 10.1046/j.1463-1326.2001.00118.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AIM Diabetic xerostomia is a typical syndrome in diabetic complication. We have reported that salivatin (salivary peptide P-C) derived from human saliva potentiates glucose-stimulated insulin release and inhibits arginine-stimulated glucagon release. The present study is aimed to gain further evidence on the physiological role by investigating the diabetic state-induced change in the amount of salivatin. METHODS The amount of salivatin was measured in saliva taken from patients with type 2 diabetes with ELISA and with rabbit antiserum against human salivatin immunocytochemically in sections of parotid glands from streptozotocin-diabetic BALB/c mice. RESULTS The amount of salivatin after a meal was reduced by diabetes in both human saliva and in the serous secretory granule of mouse parotid gland acinar cells. CONCLUSIONS The above results suggest that salivatin lowers hyperglycaemia after meal and sustains the normal blood glucose levels by incretin-like mechanisms. The function may be damaged by diabetes, and this in turn might make the diabetes worse.
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Affiliation(s)
- I Kimura
- Department of Clinical Pharmacology, Graduate School of Pharmaceutical Sciences, Toyama Medical and Pharmaceutical University, 2630 Sugitani, Toyama 930-0194, Japan.
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Kimura I, Yoshikawa M, Kobayashi S, Sugihara Y, Suzuki M, Oominami H, Murakami T, Matsuda H, Doiphode VV. New triterpenes, myrrhanol A and myrrhanone A, from guggul-gum resins, and their potent anti-inflammatory effect on adjuvant-induced air-pouch granuloma of mice. Bioorg Med Chem Lett 2001; 11:985-9. [PMID: 11327606 DOI: 10.1016/s0960-894x(01)00111-1] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Myrrhanol A, a new triterpene isolated from guggul (Balsamodendron or Commiphora mukul Hook.)-gum resin, displays a potent anti-inflammatory effect on exudative pouch fluid, angiogenesis, and granuloma weights in adjuvant-induced air-pouch granuloma of mice. Its effects were more marked than those of hydrocortisone and the 50% aqueous methanolic extract of the crude drug. Myrrhanol A is a plausible candidate for a potent anti-inflammatory agent.
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Affiliation(s)
- I Kimura
- Department of Clinical Pharmacology, Graduate School of Pharmaceutical Sciences, Toyama Medical and Pharmaceutical University, Sugitani, Japan.
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Terada T, Sugihara Y, Nakamura K, Sato R, Sakuma S, Fujimoto Y, Fujita T, Inazu N, Maeda M. Characterization of multiple Chinese hamster carbonyl reductases. Chem Biol Interact 2001; 130-132:847-61. [PMID: 11306100 DOI: 10.1016/s0009-2797(00)00240-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Carbonyl reductase (CR) is an enzyme which can catalyze the oxidoreduction of various carbonyl compounds in the presence of NAD(P)H. With the PCR method, using primers carrying the conserved nucleotide sequence among mammalian CRs, we isolated three different cDNAs (CHCR1, CHCR2 and CHCR3) which encode a unique carbonyl reductase from the Chinese hamster. The PCR products of CHCR1 and CHCR2 were clearly isolated with Bpu1102I, BspEI and XmaI restriction enzymes. The nucleotide-sequence of CHCR3 was completely different from those of CHCR1 and CHCR2. The predicted double-wound betaalphabetaalpha-structures of the CHCRs suggests the presence of a typical NADP(+)-binding motif and is similar to the corresponding region of 3alpha,20beta-hydroxysteroid dehydrogenase and mouse lung tetrameric carbonyl reductase. The deduced amino acid sequence of CHCR1 showed a high homology to CHCR2 (>96%) and the other mammalian CRs (>81%). However, CHCR3 showed a high homology to human CBR3 (>86%) and a relatively lower homology to the other CHCRs (<76%). Bacterial recombinant CHCRs showed typical carbonyl reductase activities towards 4-benzoylpyridine, 4-nitrobenzaldehyde and pyridine 4-carboxyaldehyde. These three CRs showed not only 3-keto reductase of steroids, but also 20-keto reductase. However, these CRs did not show any activity of 17-keto reductase activity. Both CHCR1 and CHCR2 have prostaglandin 9-keto reductase and 15-hydroxyprostaglandin dehydrogenase activities towards PGE(2) and PGF(2alpha) from the analyses of enzymatic reaction products. The results of Western blotting and RT-PCR suggest these CHCRs have a tissue-dependent-distribution in the Chinese hamster.
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Affiliation(s)
- T Terada
- Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka, Japan.
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Terada T, Fujita N, Sugihara Y, Sato R, Takagi T, Maeda M. Site-directed mutagenesis studies of bovine liver cytosolic dihydrodiol dehydrogenase: the role of Asp-50, Tyr-55, Lys-84, His-117, Cys-145 and Cys-193 in enzymatic activity. Chem Biol Interact 2001; 130-132:833-45. [PMID: 11306099 DOI: 10.1016/s0009-2797(00)00239-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A previous report on the cloning, bacterial expression and purification of bovine liver cytosolic dihydrodiol dehydrogenase (DD3) cDNA (1,330 bp in full length) using pKK223-3 expression vector characterize the properties of the recombinant DD3 in the aspects of substrate specificity and inhibitor sensitivity (Terada et al., Adv. Exp. Biol. Res. 414 (1997) 543-53). The nucleotide sequence of this DD3 cDNA completely matches that of bovine liver-type prostaglandin F synthase (PGFS) (Suzuki et al., J. Biol. Chem. 274 (1999) 241-8). In the present study, a large amount of recombinant DD3 (rDD3) was expressed in Escherichia coli BL21 (DE3) with a pET28a expression vector. The recombinant DD3 (rDD3) was easily and quickly purified to an apparent homogeneity with one step column chromatography of Ni(2+)-affinity resin. The rDD3 showed essentially the same substrate specificity and inhibitor sensitivity as purified liver DD3 (DD3). To analyze the role of amino acid residues of DD3 in its enzymatic activity, site-directed mutagenesis of DD3 with PCR method was performed. The results of the analyses of these mutants in the aspects of substrate specificity and cofactor-binding suggested a variety of functions in the enzymatic activity: as an active site Tyr-55 may act as a general acid and Asp-50, Lys-84 and His-117 may play an important role in the control of protonation of Tyr-55 as a general acid in the dehydrogenase activity under higher pH conditions, though these residues may not be involved in reductase activity under lower pH conditions. Though the mutated DD3s (Cys to Ser) did not show significant differences in their substrate specificities, these mutants showed different sensitivities to SH-reagents. Present results indicate that Cys-193 may play an important role in the modulation of enzymatic activity under redox conditions generated with GSH+GSSG among five cysteines in DD3.
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Affiliation(s)
- T Terada
- Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, 565-0871, Osaka, Japan.
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Terada T, Sugihara Y, Nakamura K, Sato R, Inazu N, Maeda M. Cloning and bacterial expression of monomeric short-chain dehydrogenase/reductase (carbonyl reductase) from CHO-K1 cells. Eur J Biochem 2000; 267:6849-57. [PMID: 11082196 DOI: 10.1046/j.1432-1033.2000.01787.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Mammalian carbonyl reductase (EC 1.1.1.184) is an enzyme that can catalyze the reduction of many carbonyl compounds, using NAD(P)H. We isolated a cDNA of carbonyl reductase (CHO-CR) from CHO-K1 cells which was 1208 bp long, including a poly(A) tail, and contained an 831-bp ORF. The deduced amino-acid sequence of 277 residues contained a typical motif for NADP+-binding (TGxxxGxG) and an SDR active site motif (S-Y-K). CHO-CR closely resembles mammalian carbonyl reductases with 71-73% identity. CHO-CR cDNA had the highest similarity to human CBR3 with 86% identity. Using the pET-28a expression vector, recombinant CHO-CR (rCHO-CR) was expressed in Escherichia coli BL21 (DE3) cells and purified with a Ni2+-affinity resin to homogeneity with a 35% yield. rCHO-CR had broad substrate specificity towards xenobiotic carbonyl compounds. RT-PCR of Chinese hamster tissues suggest that CHO-CR is highly expressed in kidney, testis, brain, heart, liver, uterus and ovary. Southern blotting analysis indicated the complexity of the Chinese hamster carbonyl reductase gene.
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Affiliation(s)
- T Terada
- Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, Japan.
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Sugihara Y, Yamagata S, Mizuno Y, Ezaki T. Characterization of O-acetyl-L-serine sulfhydrylase purified from an alkaliphilic bacterium. Biosci Biotechnol Biochem 2000; 64:2352-9. [PMID: 11193402 DOI: 10.1271/bbb.64.2352] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
O-Acetyl-L-serine sulfhydrylase (EC 4.2.99.8) activity was shown to be very high compared with O-acetyl-L-homoserine sulfhydrylase (EC 4.2.99.10) activity and L-cystathionine cleaving activities, in an extract of cells of an alkaliphilic bacterium grown in a synthetic medium. The synthesis of the first enzyme was repressed by approximately 55% by both L-cystine and L-djenkolic acid added to the medium at a concentration of 0.5 mM, but L-methionine (1 mM) and S-adenosyl-L-methionine (0.5 mM) affected it to lesser extents. Its enzyme activity was inhibited by 25% and 12% by methionine (10 mM) and S-adenosylmethionine (5 mM), respectively. The enzyme was purified from the extract through ammonium sulfate fractionation, heat treatment, and chromatography on columns of DEAE-cellulose, Sephacryl S-300, and Octyl Sepharose CL-4B with a recovery of 21%. Polyacrylamide gel electrophoresis with sodium dodecylsulfate of the preparation obtained finally showed its homogeneity and the molecular mass of 37,000 Da for dissociated subunits. Gel filtration of the enzyme on a Sephacryl S-300 column showed an approximate molecular mass of 72,000 Da, suggesting that the enzyme was comprised of two identical subunits. The enzyme catalyzed the beta-replacement reaction with O-acetylserine as a substrate, and showed no reactivity to other O-substituted amino acids tested. The reaction proceeded best at 40 degrees C (when tested at pH 7.5), and at pH 6.5 (at 40 degrees C). The enzyme kept 90% its activity after incubation at 65 degrees C (at pH 7.5) for 30 min, and more than 90% after 30 min incubation at pHs 7-12 at 30 degrees C. The enzyme had a Km of 4 mM for O-acetyl-L-serine and a Vmax of 37.0 micromol/min/mg of protein, a very low value compared with those of other organisms. However, the content of the enzyme in the extract was calculated to be approximately 3.5% total protein. Sensitivity of the enzyme to carbonyl reagents was very low, although it was shown to have pyridoxal 5'-phosphate as a cofactor by examination of its absorption spectrum. Sulfhydryl reagents tested showed no inhibition. The novelty of this enzyme among analogous sulfhydrylases purified from other organisms was discussed.
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Affiliation(s)
- Y Sugihara
- United Graduate School of Agricultural Sciences, Faculty of Agriculture, Gifu University, Japan
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Sugisawa H, Sugihara Y, Kim HK, Shibata H. [Factors related to attitudes toward medical facility choice by the elderly why do the elderly favor large hospitals?]. Nihon Koshu Eisei Zasshi 2000; 47:915-24. [PMID: 11187808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
PURPOSE Factors associated with large hospital choice by the elderly were examined. Possible factors were divided among three domains; predisposing factors, need factors, and enabling or restraining factors. Both direct effects and interactive effects of those factors on choice attitudes were examined. METHODS The data were obtained from a face-to-face interview survey with a national sample aged 60 and over. The survey was conducted in 1996, and 2,447 elderly were interviewed. Choice attitudes were measured in two ways: 1) preference to use a large hospital regardless of disease, and 2) complaint of not being able to use a large hospital without an referral system by a clinic. Predisposing factors were age, sex and educational attainment. Need factors were assessed in terms of activities of daily living (ADL) and number of illnesses. Enabling or restraining factors included attitudes toward medical care, accessibility of medical facilities, home doctor existence at a clinic, and labor force participation. RESULTS 18.5 percent of respondents reported a preference for large hospitals regardless of disease, and 51.3 percent had complaints about the referral system. Respondents with a higher number of illnesses were more likely to report a preference for use of a large hospital, regardless of the type of disease, and respondents with low ADL had more complaints about the referral system than those with higt ADL. The group who employed high technology as a criteria in choosing medical facilities, did not have a home doctor at a clinic, and had good access only to a large hospital, reported a strong preference for use of a large hospital regardless of disease type, and they also complained about the referral system. Regarding preference, an interactive effect between the number of illnesses and the existence of home doctor at a clinic was observed. CONCLUSION Existence of a home doctor in a clinic, attitudes toward medical care, and accessibility to medical facilities might have direct effects on choice of a large hospital, and only the existence of a home doctor at a clinic might have a strong influence decreasing this preference among the elderly with a higher number of illnesses.
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Affiliation(s)
- H Sugisawa
- Department of Health Sociology, Tokyo Metropolitan Institute of Gerontology
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Saito T, Sugisawa H, Sugihara Y, Okabayashi H, Shibata H. [The impact of relocation on well-being of the elderly]. Nihon Koshu Eisei Zasshi 2000; 47:856-65. [PMID: 11144155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
OBJECTIVE This study examined direct and indirect effects, mediated by social contact, of residential relocation on well-being of the elderly. METHODS We used longitudinal data of a national representative sample of individual aged 60 years and over (N = 1,474). The initial survey was conducted in 1987, and the follow-up survey was conducted three years later. Well-being was measured with the Center for Epidemiologic Studies-Depression Scale (CES-D) and the Life Satisfaction Index A (LSIA). Social contacts were measured in terms of frequency of contacts with relatives, friends and neighbors, as well as frequency of social participation. RESULTS Relocation had a positive direct effect on well-being, assessed by both CES-D and LSIA, but a negative indirect effect mediated by decline of social contacts. CONCLUSION Our results suggest that residential relocation indirectly has a detrimental effect on well-being of the elderly through decline in social contacts, though it may directly improve well-being of the elderly.
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Affiliation(s)
- T Saito
- Graduate School of Medicine, University of Tokyo
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Koda S, Ohara H, Suzuki J, Sugihara Y, Yasuda N, Tagami T. [Occupational health services to assist workers' health promotion based on a participatory training program of staff members for public health centers]. Nihon Koshu Eisei Zasshi 2000; 47:887-93. [PMID: 11144158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
Work-related health problems among employees of small-scale enterprises and un-employed workers are still serious in Japan. Occupational health services related to their working conditions and environment are limited and more provison needs to be made. Our participatory training program is aimed at allowing staff members of public health centers to provide occupational health services and assist workers' health promotion. In this program, participants examine occupational risk factors affecting workers' health problems with ergonomic check-lists and discuss potential improvements in the workplace. Participants experience practical visits to small-scale enterprises in their communities and the resultant occupational health services are discussed and evaluated at the final step in this program. The essential feature of successful case was that the public health center had coordinated community resources and occupational health services with ergonomic check-lists accepted by small-scale enterprises. This participatory training program is effective from the viewpoint of evaluating occupational risk factors affecting workers' health problems and proposing improvements in the workplace. In order to optimally provide occupational health services for the employees of small-scale enterprises and un-employed workers, the community resources including health facilities and the parties concerned must be organized and utilized effectively.
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Affiliation(s)
- S Koda
- Department of Public Health, Kochi Medical School
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Kimura I, Sasamoto H, Sasamura T, Sugihara Y, Ohgaku S, Kobayashi M. Reduction of incretin-like salivatin in saliva from type 2-diabetic patients and in parotid glands of streptozotocin-diabetic BALB/c mice. Diabetes Res Clin Pract 2000. [PMID: 11520305 DOI: 10.1016/s0168-8227(00)81979-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- I Kimura
- Department of Clinical Pharmacology, Graduate School of Pharmaceutical Sciences, Toyama Medical and Pharmaceutical University, 2630 Sugitani, Toyama 930-0194, Japan.
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Kanazawa S, Nagae T, Mukai N, Sugihara Y, Otani H, Tsunoda T. Pulmonary sequestration associated with aspergillosis. Jpn J Thorac Cardiovasc Surg 2000; 48:251-3. [PMID: 10824482 DOI: 10.1007/bf03218134] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Abstract
Pulmonary sequestration involves an abnormal pulmonary tissue separated from the normal pulmonary parenchyma, not connected to the tracheobronchial tree and supplied by a systemic artery. A case of intralobar pulmonary sequestration is presented. Case; a 49-year-old male was admitted to our hospital complaining of fever, cough and sputum production. Sputum culture resulted in a large growth of Aspergillus niger. Angiography showed an abnormal blood supply from the abdominal aorta to the right lower lobe. Right lower lobectomy was performed. The postoperative courses are uneventful.
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Affiliation(s)
- S Kanazawa
- Department of Surgery, Mitsugi Municipal General Hospital, Hiroshima, Japan
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Sugisawa H, Kishino H, Sugihara Y, Shibata H. [Characteristics of dropouts and participants in a twelve-year longitudinal research of Japanese elderly]. Nihon Koshu Eisei Zasshi 2000; 47:337-49. [PMID: 10835895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
PURPOSES The attrition of respondents in panel studies of the elderly can create bias in data analysis. The purposes of this study are two fold; 1) to examine characteristics of dropouts, from a particular panel lost except due to natural attrition (by death) by comparison with continuing participants in that wave, and 2) to assess representativeness of those actually continuing in a particular panel by comparison with those eligible for inclusion in that wave. Only those who died were excluded from the group of respondents at the baseline survey because they constituted natural attrition in this longitudinal survey. METHOD At baseline (1987), 2,200 individuals age 60+ from 3,288 national representative sample were interviewed. Non-response status to three contacts (1990, 1993, 1996) with the panel was examined in relation to variables included in the baseline interview. A number of characteristics of demographic background, health, life-style, and social relations obtained in the baseline survey (1987) were compared between those re-interviewed in a particular panel and subjects lost through unnatural attrition until that wave. To study the influence of unnatural attrition on variable distributions and each related factors of two health indicators (self-rated health and depressive symptoms), baseline responses were compared between those re-interviewed in a particular panel and all who were eligible to respond in that wave. RESULTS 1) Dropouts lost to each wave were significantly older and had a lower level of social participation than persons remaining in that wave. Significant differences in health and life-style variables appeared between dropouts lost and continuing participants until third or later waves. 2) Continuing participants in a particular panel were likely to be younger, to be more physically, mentally, or socially healthy than those eligible to respond in the wave. Each related factors of two health indicators were almost same between those re-interviewed in a particular panel and those eligible to respond in that wave. CONCLUSION Dropouts in longitudinal research were found to appear nonrandomly. While distributions of age and health indicators in those re-interviewed were influenced by respondent attrition, related factors of health indicators may be free of bias that can be created by it.
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Affiliation(s)
- H Sugisawa
- Department of Health Sociology, Tokyo Metropolitan Institute of Gerontology
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Kanazawa S, Nagae T, Fukuda K, Katsu I, Mukai N, Sugihara Y, Otani H, Higami Y, Tsunoda T. Granulomatous lobular mastitis: difficulty of diagnosis. Int J Clin Oncol 2000; 5:57-61. [DOI: 10.1007/s101470050011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Koda S, Yasuda N, Sugihara Y, Ohara H, Udo H, Otani T, Hisashige A, Ogawa T, Aoyama H. [Analyses of work-relatedness of health problems among truck drivers by questionnaire survey]. Sangyo Eiseigaku Zasshi 2000; 42:6-16. [PMID: 10707379 DOI: 10.1539/sangyoeisei.kj00002552185] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In order to estimate occupational risk factors for health problems among truck drivers, a questionnaire survey of working conditions, job content in truck transportation, subjective symptoms and present illnesses was carried out among 541 truck transportation workers in 1997. The valid response rate was 85.7%, and 134 local truck drivers, 199 long-distance truck drivers and 71 clerical workers were analyzed. First, to examine occupational risk factors and health problems among the three groups, the authors analyzed working conditions, job content in truck transportation, subjective symptoms and present illnesses. Second, to estimate the work-relatedness of health problems among local truck drivers and long-distance truck drivers, logistic regression analyses were conducted, and odds ratios and 95% confidence intervals were computed. The prevalence rates of working factors affecting health problems of truck drivers were significantly higher than those of clerical workers in the items on irregular shift work, working environment, working posture, handling heavy materials, job stress due to overloading and long working time and limited time off. The prevalence rates for subjective symptoms (ringing in the ears, neck pain and low back pain) and present illnesses (hypertension, ulcers in the digestive tract, back injuries, whiplash injuries and hemorrhoids) among truck drivers were significantly higher than those of clerical workers. In logistic regression analyses, many work-related items except age, BMI and smoking habit showed significantly higher odds ratios for subjective symptoms and present illnesses of truck drivers. Odds ratios for hypertension, heart diseases and related subjective symptoms among local truck drivers were significantly increased by job career, twisting posture, vibration and driving stress. Odds ratios for gastro-duodenal diseases and related subjective symptoms were significantly increased by narrow working space, sleeping in the truck, driving distance, squatting posture and driving stress. Odds ratios for ringing in the ears among local truck drivers were significantly increased by job career, long working time, narrow working space, sleeping in the truck and driving stress. Odds ratios for musculo-skeletal diseases and related subjective symptoms were significantly increased by overwork, vibration, narrow working space, sitting posture and shortage of recess. Odds ratios for fatigue symptoms were significantly increased by the shortage of recess, vibration and driving stress. In order to cope with the health problems of truck drivers, it is recommended that working conditions and work loads for among truck drivers as described above be improved.
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Affiliation(s)
- S Koda
- Kochi Medical School, Department of Public Health, Japan
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Sugihara Y, Nojima H, Matsuda H, Murakami T, Yoshikawa M, Kimura I. Antihyperglycemic effects of gymnemic acid IV, a compound derived from Gymnema sylvestre leaves in streptozotocin-diabetic mice. J Asian Nat Prod Res 2000; 2:321-327. [PMID: 11249615 DOI: 10.1080/10286020008041372] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
We investigated the antihyperglycemic action of a crude saponin fraction and five triterpene glycosides (gymnemic acids I-IV and gymnemasaponin V) derived from the methanol extract of leaves of Gymnema sylvestre R. BR. (Asclepiadaceae) in streptozotocin (STZ)-diabetic mice. The saponin fraction (60mg/kg) reduced blood glucose levels 2 4h after the intraperitoneal administration. Gymnemic acid IV, not the other 4 glycosides at doses of 3.4-13.4mg/kg reduced the blood glucose levels by 13.5-60.0% 6h after the administration comparable to the potency of glibenclamide, and did not change the blood glucose levels of normal mice. Gymnemic acid IV at 13.4 mg/kg increased plasma insulin levels in STZ-diabetic mice. Gymnemic acid IV (1 mg/mL) did not inhibit alpha-glycosidase activity in the brush border membrane vesicles of normal rat small intestines. These results indicate that insulin-releasing action of gymnemic acid IV may contribute to the antihyperglycemic effect by the leaves of G. sylvestre. Gymnemic acid IV may be an anti-obese and antihyperglycemic pro-drug.
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Affiliation(s)
- Y Sugihara
- Department of Chemical Pharmacology, Toyama Medical and Pharmaceutical University, Sugitani, Japan
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Kanazawa S, Nagae T, Fujiwara T, Fujiki R, Mukai N, Sugihara Y, Yamaguchi N, Ohtani H, Higami Y, Ikeda T, Tsunoda T. Malignant mesothelioma of the tunica vaginalis testis: report of a case. Surg Today 1999; 29:1106-10. [PMID: 10554340 DOI: 10.1007/s005950050654] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We describe herein the case of a 68-year-old man with malignant mesothelioma of the tunica vaginalis testis. The pathological diagnosis was based upon the clinical findings, gross and microscopic morphology, and special stains. Malignant mesothelioma is a rare tumor associated with asbestos exposure that can be effectively treated with orchidectomy via an inguinal approach.
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Affiliation(s)
- S Kanazawa
- Department of Surgery, Mitsugi Municipal General Hospital, 124 Ichi, Mitsugi-cho, Mitsugi-gun, Hiroshima 722-0311, Japan
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Sugisawa H, Kishino H, Sugihara Y, Shibata H. [Analysis of items missing in responses to a series of follow-up surveys in Japanese elderly]. Nihon Koshu Eisei Zasshi 1999; 46:1048-59. [PMID: 10658469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
PURPOSES We examined whether the percentage of items missing and the factors related to item missing differ across follow-up surveys, Variables targeted to examine missing items included health indicators (activities of daily living, cognitive function, self-rated health, Center for Epidemiologic Studies--Depression, and PGC Morale Scale), health habits (cigarette smoking, alcohol consumption, physical exercise, and relative weight), and socioeconomic indicators (educational attainment, income, and social networks). METHODS Longitudinal data were collected at intervals of three years since 1987 through a national survey of Japanese adults aged 60 and over, At the baseline survey, a total of 2,200 interviews were completed from the list of 3,288 names. At the following three follow-up surveys, 1,671, 1,369, and 1,068 persons were reinterviewed respectively. Possible factors related to appearance of a missing item consisted of five aspects; 1) demographic variables (age and sex), 2) social status (educational attainment, existence of a spouse, and job status), 3) health status (activities of daily living and cognitive function), 4) cooperative attitude toward a survey, and 5) whether an item had been missing at the previous survey (s). Those factors were analyzed for each variable respectively. If a group with scaled or collective items had one or more missing items, we classified that group as a missing item group. RESULTS 1. The percentage of cases with items missing was 5 percent or more for four variables; CES-D, PGC Morale Scale, income, and health habits. Those percentages were almost constant over the four surveys. 2. Factors related to appearance of items missing differed by psychological variables such as, CES-D and PGC Morale Scale, income, or health habits. Those factors had constant impact on appearance of items missing over follow-up surveys. 3. Regarding CES-D, PGC Morale Scale, income, or health habits, persons with an item missing at a previous survey, or who did not have a cooperative attitude toward the survey had a significant impact on an increase in the percentage of missing items. CONCLUSION Characteristics of persons with items missing differs among the variables, and those characteristics may contribute to the incidence of items missing in subsequent surveys.
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Affiliation(s)
- H Sugisawa
- Department of Health Sociology, Tokyo Metropolitan Institute of Gerontology
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Abstract
The antihyperglycaemic interaction (blend effect) of component crude drugs included in a traditional Chinese prescription, Byakko-ka-ninjin-to (BN; consisted of five crude drugs, ginseng, anemarrhena,-licorice, gypsum and rice) was investigated using genetically obese diabetic KK-CA(y) mice and alloxan-diabetic mice. The water extract of ginseng, anemarrhena, licorice and gypsum when individually tested markedly lowered blood glucose levels in diabetic animals. Antihyperglycaemic effects of ginseng-anemarrhena and ginseng-licorice combinations were decreased compared with the respective individual-effects. Such decreased effects were partially reversed by adding gypsum or by substituting CaCl(2) for gypsum. The combination of D-O-ANa and glycyrrhizin, respectively the main constituents from ginseng and licorice, also demonstrated a decreased effect compared with the respective individual effects. The CaCl(2) at 0.5 mg/kg (i.p.) was sufficient to partially reverse these effects. These results indicate that antihyperglycaemic effects of BN depend on four crude drugs and Ca(2+) in the blend.
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Affiliation(s)
- I Kimura
- Department of Chemical Pharmacology, Faculty of Pharmaceutical Sciences, Toyama Medical and Pharmaceutical University, 2630 Sugitani, Toyama 930-0194, Japan
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Abstract
This study examined personality characteristics of Mexican-American male batterers. 60 Mexican-American male batterers (M = 33.6 yr.) in the court system in South Texas took the MCMI-III and their MCMI-III scores were compared with the scores of a community sample of 45 Mexican-American individuals (M = 30.4 yr.). The batterers frequently scored higher than the nonbatterers on the Avoidant and Passive-Aggressive scales, while nonbatterers frequently scored higher on the Histrionic scale. The batterers scored significantly higher on 18 out of 24 MCMI-III scales, while nonbatterers scored significantly higher on two scales.
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Abstract
Gender-related personality traits among Mexican-American men and women were examined. The sample consisted of 307 Mexican-Americans (150 women, 157 men) in a predominantly Mexican and Mexican-American community in South Texas. Mexican-American men scored significantly higher than the women on eight masculine items, whereas Mexican-American women scored higher than the men on four feminine items. A comparison between the scores of Mexican-Americans on the Bem Sex-Role Inventory with those of the original sample in the inventory's manual showed that the scores for the Masculinity and Femininity subscales for both Mexican-American men and women were not significantly different from those of the original sample. A significant difference, however, was found on some of the items of the inventory. Analysis also indicated that more Mexican-American men were categorized as Feminine and Androgynous than were non-Hispanic Euro-American males in the original sample. Among Mexican-American women there were more individuals classified as Masculine and Undifferentiated and a lower percentage as Feminine than among the original sample. Implications and recommendations based on the results are discussed.
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Sugisawa H, Kishino H, Sugihara Y, Okabayashi H, Shibata H. [Comparison of characteristics between respondents and nonrespondents in a national survey of Japanese elderly using six year follow-up study]. Nihon Koshu Eisei Zasshi 1999; 46:551-62. [PMID: 10550979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
PURPOSES The purpose of this study were twofold: 1) to examine differences between respondents and nonrespondents in sociodemographic or health characteristics, 2) to study nonresponse effects on relationships between variables, using a 6 year follow-up study for both respondents and nonrespondents at the initial survey. METHODS The data were collected in 1987 through a national survey of Japanese adults aged 60 and over. A total of 2,200 interviews were completed from the list of 3,288 names. In 1993, 1,010 nonrespondents excluding persons who had died, moved, or whose addresses were unknown in the prior interview, were recontacted through a mail questionnaire. A total of 559 persons completed the mail questionnaire. Of the original 2,200 baseline interviewees, some by proxy interviews, 2,260 persons were reinterviewed, at the same time as the mail survey. Sociodemographic and health variables (age and sex), social indicators (educational attainment, marital status, and job status), health status (mortality, existence of diseases, and activities of daily living), subjective well-being (life satisfaction, self-rated health, and economic satisfaction) were compared between respondents and nonrespondents. Relationships between self-rated health and sociodemographic or health variables were examined by multiple regression analysis. RESULTS 1. Compared to people who participated in the survey, norespondents were likely to be male, in the lower age categories, and with higher educational attainment at the follow-up survey. Also, life satisfaction and self-rated health were lower in nonrespondents than in respondents. Reasons for nonresponse varied but appeared to be somewhat related to characteristics of nonrespondents. 2. No significant relationships between self-rated health and sociodemographic or health variables appeared for the respondent group and also when including the nonrespondent group. CONCLUSION While differences between respondents and nonrespondents on certain variables were significant, relationships between self-rated health and sociodemographic variables were not observed.
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Affiliation(s)
- H Sugisawa
- Department of Health Sociology, Tokyo Metropolitan Institute of Gerontology
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Sugihara Y, Sugisawa H, Nakatani Y, Shibata H. [Impact of duration of caregiving on stress among primary caregivers of elderly]. Nihon Koshu Eisei Zasshi 1998; 45:320-35. [PMID: 9691662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
This study examined (1) the direct effect of the duration of caregiving on caregiver psychological distress, and (2) two- or three-way interactions between duration, stressors (elderly's physical and cognitive impairments), and personal (caregiver's economic or work status) or social (informal or formal supports) resources. We interviewed 833 primary family caregivers of non-institutionalized frail elderly who had been selected through a screening process of all residents aged 65 and over (21,567 persons) in a suburban area of Tokyo. Caregiver psychological distress was evaluated by "Caregiving Burden Scale" as a caregiving-specific psychological measurement, and "Center for Epidemiologic Studies Depression Scale (CES-D)" as a general psychological measurement. The results were as follows. 1. For Caregiving Burden, duration showed a direct effect, as those who had been providing care for a longer duration of time reported higher burden. We found no interactions between duration, stressors, and resources on caregiving burden. 2. For CES-D, duration had interactions, but no direct effect. (1) Two-way interactions were observed between duration and caregiver's economic or work status, as caregivers with a low economic status or who were unemployed showed a stronger negative impact from duration of caregiving. (2) Three-way interactions were observed between duration, the elderly's ADL impairment, and informal support. Informal support, such as a secondary caregiver, buffered the negative impact of the elderly's ADL impairment in cases with a shorter duration of caregiving, but not for those with longer duration. (3) Three-way interactions were observed between duration, the elderly's cognitive impairment, and formal emotional support. Formal emotional support buffered the negative impact of the elderly's cognitive impairment for those with a longer duration of caregiving, but not for those with a shorter duration. These findings suggest that stress-buffering resources differ according to duration of caregiving.
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Affiliation(s)
- Y Sugihara
- Dept. of Health Sociology, School of Health Science & Nursing, Graduate School of Medicine, University of Tokyo
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Nojima H, Kimura I, Chen FJ, Sugihara Y, Haruno M, Kato A, Asano N. Antihyperglycemic effects of N-containing sugars from Xanthocercis zambesiaca, Morus bombycis, Aglaonema treubii, and Castanospermum australe in streptozotocin-diabetic mice. J Nat Prod 1998; 61:397-400. [PMID: 9544568 DOI: 10.1021/np970277l] [Citation(s) in RCA: 96] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The aqueous MeOH extract of the leaves and root of Xanthocercis zambesiaca (Leguminosae) and eight structurally related nitrogen-containing sugars, fagomine (1), 4-O-beta-D-glucopyranosylfagomine (2), 3-O-beta-D-glucopyranosylfagomine (3), 3-epifagomine (4), 2,5-dideoxy-2,5-imino-D-mannitol (5), castanospermine (6), alpha-homonojirimycin (7), and 1-deoxynojirimycin (8) were evaluated for antihyperglycemic effects in streptozotocin (STZ)-diabetic mice. The insulin-releasing effects of 1 were also investigated. The blood glucose level fell after i.p. injection of the extract (50 mg/kg). Compounds 1, 2, 5, and 6 reduced the blood glucose level after i.p. injection of 150 mumol/kg. Compound 1 increased plasma insulin level in STZ-diabetic mice and potentiated the 8.3-mM glucose-induced insulin release from the rat isolated-perfused pancreas. The 1-induced potentiation of insulin release may partly contribute to antihyperglycemic action.
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Affiliation(s)
- H Nojima
- Department of Chemical Pharmacology, Faculty of Pharmaceutical Sciences, Toyama Medical and Pharmaceutical University, Japan
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Hakura A, Tsutsui Y, Sonoda J, Kai J, Imade T, Shimada M, Sugihara Y, Mikami T. Comparison between in vivo mutagenicity and carcinogenicity in multiple organs by benzo[a]pyrene in the lacZ transgenic mouse (Muta Mouse). Mutat Res 1998; 398:123-30. [PMID: 9626972 DOI: 10.1016/s0027-5107(97)00248-0] [Citation(s) in RCA: 75] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
To evaluate whether the in vivo mutagenicity test system using the lacZ transgenic mice (Muta Mouse) may be applied to carcinogenesis studies, both the in vivo mutagenicity and carcinogenicity of benzo[a]pyrene (BP) was tested in mice under the same administration conditions. The eleven organs of the mice on the 14th day after the final oral administration of BP at a dose of 125 mg kg(-1) day(-1) or corn oil for 5 consecutive days were tested for in vivo mutation by the positive-selection method. The data show that the colon had the highest lacZ mutant frequency (37-fold increase over the spontaneous frequency), followed by the ileum > forestomach > bone marrow, spleen > glandular stomach > liver, lung > kidney and heart. No significant mutations were found in the brain. These results may suggest that, in general, the organs with rapidly proliferative tissues have a marked increase in vivo mutant frequencies under the conditions of this experimental design. The forestomach and lymphatic organs including the spleen (malignant lymphoma) were the main target organs for BP carcinogenesis by 5 daily oral doses of 75 and 125 mg kg(-1) day(-1). These results suggest that the mutation results from the transgenic assay with BP reflect the carcinogenicity of BP in the mouse. They also indicate, however, that the magnitude of the in vivo lacZ mutant frequencies induced by BP in different organs did not fully correlate with the target organs for carcinogenicity.
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Affiliation(s)
- A Hakura
- Drug Safety Research Laboratories, Ibaraki, Japan.
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Furukawa S, Sugihara Y, Iwasaki F, Fukumitsu H, Nitta A, Nomoto H, Furukawa Y. Brain-derived neurotrophic factor-like immunoreactivity in the adult rat central nervous system predominantly distributed in neurons with substantial amounts of brain-derived neurotrophic factor messenger RNA or responsiveness to brain-derived neurotrophic factor. Neuroscience 1998; 82:653-70. [PMID: 9483526 DOI: 10.1016/s0306-4522(97)00315-1] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Distribution of brain-derived neurotrophic factor-like immunoreactivity was investigated in the adult rat brain using two types of antibodies against peptides, V2 and V4, unique to the brain-derived neurotrophic factor. Western blot analysis showed that both antibodies specifically bound brain-derived neurotrophic factor, but not other neurotrophins, and that they recognized identical molecules of 18,000 mol. wt, but not the 14,500 mol. wt mass of mature form, in extracts from the rat hippocampus. Both antibodies recognized an identical precursor form (30,000 mol. wt) in lysates of COS7 cells transfected with brain-derived neurotrophic factor gene. These indicated that both antibodies predominantly recognized identical precursor protein(s) or its derivative(s) probably because of their much higher amounts than the amount of mature protein. Immunochemical studies showed that anti-V2 predominantly stained the cytoplasm of cells; whereas the anti-V4 bound to the nucleus, suggesting that the tertiary structure of immunoreactive molecules changed depending on their location. Cell populations with the immunoreactivity were similar in most brain sections stained with either anti-V2 or anti-V4 antibodies. These results suggest that brain-derived neurotrophic factor-like immunoreactivity distributes, in most cases, in neurons responding to brain-derived neurotrophic factor and in neurons expressing abundant brain-derived neurotrophic factor messenger RNA. These, taken together with other results concerning distributions of messenger RNAs of brain-derived neurotrophic factor and TrkB, provide additional information to elucidate the function of brain-derived neurotrophic factor in the rat central nervous system.
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Affiliation(s)
- S Furukawa
- Laboratory of Molecular Biology, Gifu Pharmaceutical University, Japan
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Makino H, Tsujikawa T, Hata K, Fukano M, Koyama S, Inoue H, Fujiyama Y, Baba T, Baba M, Sugihara Y. [Autopsy case of primary amyloidosis developing refractory ascites and undergoing rapid deterioration]. Nihon Naika Gakkai Zasshi 1997; 86:1456-7. [PMID: 9410951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Hakura A, Tsutsui Y, Mochida H, Sugihara Y, Mikami T, Sagami F. Mutagenicity of dihydroxybenzenes and dihydroxynaphthalenes for Ames Salmonella tester strains. Mutat Res 1996; 371:293-9. [PMID: 9008731 DOI: 10.1016/s0165-1218(96)90118-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The mutagenicity of 3 dihydroxybenzene (DHB) and 9 dihydroxynaphthalene (DHN) isomers was examined by using 5 different Ames Salmonella mutagenicity tester strains in the presence and absence of phenobarbital and 5,6-benzoflavone-treated rat liver S9-mix. Of the 3 DHB isomers, 1,4-DHB (hydroquinone) was mutagenic, and of the 9 DHN isomers, 1,3-DHN (naphthoresorcinol), 1,4-DHN (hydronaphthoquinone), 1,6-DHN and 1,7-DHN were mutagenic. Mutagenicity of all the compounds tested was observed in the absence of S9-mix, while 1,4-DHN and 1,6-DHN were also mutagenic in the presence of S9-mix. The mutagenicity of 1,4-DHB and 1,4-DHN for TA104, which is a strain sensitive to oxidative mutagens, was almost completely or partially inhibited by superoxide dismutase (SOD) and/or catalase, indicating the involvement of activated oxygen species in mutagenesis. Furthermore, from the finding that the 4 DHNs were mutagenic for TA2637, the strain sensitive to frameshift mutagens, it is possible that the mutagenicity of DHNs for S. typhimurium was also attributable to DNA adducts that form with quinones and/or semiquinones through oxidation of DHNs. The mutagenicity of 1,3-DHN, which showed the largest number of revertants in strains TA100, TA98, TA2637 and TA104, was greatly decreased, when their pKM101 plasmid-deficient strains, TA1535, TA1538, TA1537 and TA2659 were used. This observation suggests that an SOS repair system was involved in the mutagenesis of 1,3-DHN for S. typhimurium.
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Affiliation(s)
- A Hakura
- Department of Drug Safety Research, Eisai Co., Ltd., Ibaraki, Japan
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Hirota M, Awatsuji H, Sugihara Y, Miyashita S, Furukawa Y, Hayashi K. Expression of pS2 gene in rat brain. Biochem Mol Biol Int 1995; 35:1079-1084. [PMID: 7549926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
We have previously shown that the expression of pS2 mRNA, which encodes a secreted 60-amino acid protein of unknown function, is widely distributed throughout the entire body of the mouse including the brain. We report herein that pS2 mRNA is also expressed in the brain and in peripheral tissues of rats. In adult rat brain, pS2 mRNA was predominantly expressed in hippocampus, followed by the cerebral cortex and cerebellum. The developmental expression of pS2 mRNA in hippocampus, which region is known to mature after birth, showed a clear peak in 1- or 3-day-old rats, then gradually decreased by 7 weeks after birth. In midbrain, the maturation of which occurs at an early developmental stage, pS2 mRNA level was retained at a low level from postnatal 1 day to week 7. These results suggest that pS2 protein plays an important role in the development of central nervous system.
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Affiliation(s)
- M Hirota
- Department of Molecular Biology, Gifu Pharmaceutical University, Japan
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Abstract
An autopsy was performed on a patient who had chronic hypersensitivity pneumonitis that was observed for 9 years. The patient was a farmer who developed symptoms every March through July during the use of moist hay that was infected heavily with Candida. Precipitins and an inhalation challenge test to C albicans were positive. We interpret the role of C albicans in this case.
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Affiliation(s)
- M Ando
- First Department of Internal Medicine, Kumamoto University School of Medicine, Japan
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Kashida Y, Yamashita H, Sugihara Y, Minowa K, Saeki H, Yoshimata T, Tochigi T. [Case report of Farmer's lung disease in siblings in Kagoshima Prefecture]. Nihon Kyobu Shikkan Gakkai Zasshi 1992; 30:1835-41. [PMID: 1464985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Two cases of farmer's lung disease in siblings are reported. A 54-year-old male farmer, who had been engaged in stock work for 20 years, presented to our clinic for the second episode of fever, productive cough and shortness of breath. Chest roentgenogram revealed diffuse micronodular pattern, and mild hypoxemia was recognized on arterial blood gas analysis. Cytology obtained from BALF showed lymphocytosis, with especially increased OKT3, OKT4 positive cells and OKT4/8 ratio. The diagnosis was confirmed by highly positive reaction of precipitins to Thermoactinomyces vulgaris and granulomatous interstitial pneumonitis on histopathological examination. The second case was a 51-year-old female patient, the sister of the first case, who also worked as a stock farmer of another farm for 20 years. She presented with an episode of similar symptoms to the first case, one and a half years after the onset of her brother's symptoms. The findings of roentgenogram, BALF analysis, precipitins to T. Vulgaris and pathology were similar to those of the first case. The finding of high OKT4/8 ratio on BALF analysis in both cases is characteristic of formers lung disease, in contrast to the summer-type hypersensitivity pneumonitis which usually shows low OKT4/8 ratio in BALF. To our knowledge, this is the first report of farmer's lung disease in an area other than the northern part of Japan. Thus we conclude that farmer's lung disease may occur in Japan under any environmental conditions, and that some genetic factor may take part in the onset of this disease.
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Affiliation(s)
- Y Kashida
- Department of Medicine, Kagoshima Seikyo Hospital, Japan
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Ikezawa Z, Sugihara Y, Ueno J. Enhancing effects of fluorescein on beta-lactam rash. II: Enhancing effects of fluorescein on generalized rash induced by beta-lactam antibiotics in guinea pigs. J Dermatol 1992; 19:537-43. [PMID: 1479111 DOI: 10.1111/j.1346-8138.1992.tb03725.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Healthy volunteers, who were receiving intravenous injections of cefclidin (CFCL) with frequent concomitant use of fluorescein (F) and oxybuprocain (O) in the eyes for measurement of ocular tension, developed drug eruptions at the high frequency of 66.7%. The injection of CFCL alone induced the eruptions at an incidence of 2.8%. The cause of this high eruption rate was thought to be the simultaneous treatment with F and/or O. Therefore, we conducted experiments with CFCL-induced generalized rash (GR) in guinea pigs. Guinea pigs treated with F and O during both the phases of immunization and intraperitoneal elicitation developed CFCL rashes at a high frequency. This CFCL-rash was augmented by the treatment with F during either phase, but not by the treatment with O. Skin testing induced delayed type hypersensitivity (DTH) reaction to O in some animals, but the DTH to F was not induced in animals immunized with F in complete Freund's adjuvant. Furthermore, F augmented rashes induced not only by CFCL but also by other beta-lactam antibiotics such as cefsulodin and sulbenicillin. Accordingly, it is likely that F played a dominant role in the high incidence of drug eruptions during the volunteer trials with measurement of ocular tension.
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Affiliation(s)
- Z Ikezawa
- Yokohama City University School of Medicine, Urafune Hospital, Department of Dermatology, Japan
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Iwasaki A, Yamashita Y, Tsubaki T, Matsuda S, Sugihara Y, Akimoto K, Akasawa A, Obata T, Iikura Y. [Study of liver function in babies with atopic dermatitis by using 13C-methacetin breath test]. Arerugi 1992; 41:645-53. [PMID: 1444818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We measured serum GOT levels in babies with atopic dermatitis and food allergy. Two hundred and fourteen babies (133 male, 18 female, under 2 years of age) who first visited the Department of Allergy in the National Children's Hospital were examined. Their serum GOT levels were higher than normal; the younger they were, the higher the serum GOT levels were. We carried out the 13-methacetin breath test (MBT) on 11 babies with atopic dermatitis and high serum GOT levels as well as 5 normal babies to estimate their hepatic microsomal function. 13C-methacetin was administered (0.5 mg/kg) orally, and breath was collected at 30 minutes before and immediately before administration. After administration it was collected at 15 minute intervals for the first hour and 45 minute intervals for 90 consecutive minutes afterwards. The level of 13CO2 in their breath was determined with a mass spectrometer. The peak level of 13CO2 excretion (%dose/hr) in the atopic babies with high serum GOT levels was lower and the time required for 13CO2 excretion to reach its maximum level was longer than in normal babies. Also their 13CO2 clearance rate (%/hr) was lower. These results suggested that there was some relationship between atopic dermatitis and liver dysfunction in babies.
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Affiliation(s)
- A Iwasaki
- Department of Allergy, National Children's Hospital
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Matsuyama T, Sugihara Y, Iwasaki K, Fujii A. [Clinical studies of IgA nephropathy during pregnancy]. Nihon Sanka Fujinka Gakkai Zasshi 1989; 41:1517-22. [PMID: 2584806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
We have obtained some new findings from the observation and management of 15 pregnancies and deliveries, all complicated with IgA nephropathy, which was diagnosed by open renal biopsy before each pregnancy. The classification of IgA nephropathy was from Grade I to Grade IV according to Nomoto et al. Clinical and pathological changes during each pregnancy were observed in the appearance and degree of edema, proteinuria and hypertension. The criteria were based on the classification of toxemia of pregnancy of the Committee for Toxemia of Pregnancy. Japan Society of Obstetrics and Gynecology. We referred to laboratory data such as complete blood counts, coagulation tests, blood chemistry tests, urinalysis and renal function tests. We also referred to Amagasaki's criteria which indicate whether the pregnancy and delivery will be normal or not. Three cases with Grade I IgA nephropathy all had normal courses. Nine cases with Grade II satisfied the criteria of Amagasaki for normal delivery, but during the third trimester, proteinuria was recognized in seven cases, edema in one case and hypertension in two cases. Three cases with Grade III were all met the criteria for abnormal pregnancy and delivery. Only one case showed proteinuria from the first trimester, but she had no obstetrical complications or deterioration of renal function during her course. There were 12 vaginal deliveries and three Cesarian sections. All infants were in good condition except for one intrauterine fetal death. In view of the above results, we concluded that patients with Grade II IgA nephropathy could not continue their pregnancies safety. However, some of the patients with Grade III had successful deliveries.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- T Matsuyama
- Department of Obstetrics and Gynecology, Tokai University School of Medicine, Kanagawa
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Harada I, Sugihara Y, Aoi S, Tsukada E, Nishijima Y. [Evaluation of the method of disinfection to eradicate Pseudomonas]. Kurinikaru Sutadi 1988; 9:863-8. [PMID: 3205030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Matsuura T, Katsumata T, Matsuura T, Ueno Y, Sugihara Y, Kitamura K, Taniguchi K, Imamura M, Chiang Y. [Histopathological study of pulpal irritation of dental adhesive resin. Part 2. Super Bond C & B]. Nihon Hotetsu Shika Gakkai Zasshi 1987; 31:418-27. [PMID: 3506690 DOI: 10.2186/jjps.31.418] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Sugihara Y, Sato K. [Nursing responses at asthmatic crises]. Kango Gijutsu 1986; 32:1896-9. [PMID: 3640863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Tamaya T, Tsurusaki T, Kusanishi H, Okada H, Yamamoto H, Ahara M, Murakami A, Takano N, Obata T, Shimura T, Iwasaki T, Nakata Y, Futaoka S, Ohshima K, Furuta N, Murakami T, Ohtani I, Sugihara Y, Yuasa M, Mizunoya F, Ota S, Fujita H, Ueha I, Katoh K. [Clinical evaluation of pivmecillinam in the maintenance therapy of chronic urinary tract infection (author's transl)]. Jpn J Antibiot 1981; 34:1278-87. [PMID: 6276586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
In order to evaluate the efficacy and safety of pivmecillinam (melysin tablet, PMPC), PMPC was administered to 78 chronic UTI cases in the field of obstetrics and gynecology (posthysterectomy infection, chronic cystitis, chronic pyelonephritis and etc.). In principle, daily 400 mg of PMPC was administered for 2 weeks. (1) Overall clinical efficacy judged by doctor was evaluated in 78 cases and the result was; excellent in 17, good in 37, fair in 10, poor in 13 and unknown in 1 case with the effectiveness rate of 69.2%. (2) Overall clinical efficacy judged by 'criteria for clinical evaluation in complicated UTI' recommended by UTI study member was evaluated in 54 cases and the result was; excellent in 15, good in 20 and poor in 19 cases with the overall efficacy rate of 64.8%, the result of which was similar to that of doctor's judgement. (3) Efficacy on pyuria was evaluated in 72 cases and it was cleared in 27, decreased in 25, unchanged in 20 and unknown in 6 cases. Efficacy on bacteriuria was evaluated in 72 cases and it was eliminated in 44, decreased in 9, replaced in 8, unchanged in 8 and unknown in 9 cases. (4) Side effect, considered by doctors to be caused by PMPC administration, was noticed in 3 out of 78 cases (3.8%), all of which was mild gastrointestinal disturbance and the administration of PMPC was continued. Abnormal change of laboratory finding considered by doctors to be caused by PMPC administration was noticed in 1 out of 78 cases, which was slight elevation of GOT and GPT values. It is therefore considered that PMPC appear to be useful drug for the maintenance therapy of chronic UTI in the field of obstetrics and gynecology.
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