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Kitamura M, Akamatsu M, Machigashira M, Hara Y, Sakagami R, Hirofuji T, Hamachi T, Maeda K, Yokota M, Kido J, Nagata T, Kurihara H, Takashiba S, Sibutani T, Fukuda M, Noguchi T, Yamazaki K, Yoshie H, Ioroi K, Arai T, Nakagawa T, Ito K, Oda S, Izumi Y, Ogata Y, Yamada S, Shimauchi H, Kunimatsu K, Kawanami M, Fujii T, Furuichi Y, Furuuchi T, Sasano T, Imai E, Omae M, Yamada S, Watanuki M, Murakami S. FGF-2 stimulates periodontal regeneration: results of a multi-center randomized clinical trial. J Dent Res 2010; 90:35-40. [PMID: 21059869 DOI: 10.1177/0022034510384616] [Citation(s) in RCA: 162] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
The efficacy of the local application of recombinant human fibroblast growth factor-2 (FGF-2) in periodontal regeneration has been investigated. In this study, a randomized, double-blind, placebo-controlled clinical trial was conducted in 253 adult patients with periodontitis. Modified Widman periodontal surgery was performed, during which 200 µL of the investigational formulation containing 0% (vehicle alone), 0.2%, 0.3%, or 0.4% FGF-2 was administered to 2- or 3-walled vertical bone defects. Each dose of FGF-2 showed significant superiority over vehicle alone (p < 0.01) for the percentage of bone fill at 36 wks after administration, and the percentage peaked in the 0.3% FGF-2 group. No significant differences among groups were observed in clinical attachment regained, scoring approximately 2 mm. No clinical safety problems, including an abnormal increase in alveolar bone or ankylosis, were identified. These results strongly suggest that topical application of FGF-2 can be efficacious in the regeneration of human periodontal tissue that has been destroyed by periodontitis.
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Fukui T, Lee E, Kitamura M, Hosoda H, Bokui C, Ikusu K, Okita K. Visuospatial dysfunction may be a key in the differentiation between Alzheimer's disease and subcortical cognitive impairment in moderate to severe stages. Dement Geriatr Cogn Disord 2010; 28:288-94. [PMID: 19828949 DOI: 10.1159/000245157] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/06/2009] [Indexed: 11/19/2022] Open
Abstract
AIMS Recent studies have suggested that subcortical cognitive impairment (SubCI) and Alzheimer's disease (AD) can be differentiated by visuospatial tasks. We addressed at what severity stage these differences become apparent and what components in visuospatial processes are subject to impairment. METHODS Sixty patients with AD, 22 with vascular cognitive impairment and 63 with extrapyramidal diseases with cognitive impairment were assessed using the revised Hasegawa Dementia Scale (HDSR), clock drawing/reading/matching tests (CDT, CRT, CMT), figure copying (FIG) and Frontal Assessment Battery (FAB). Patients were categorized according to the HDSR scores in order to control for the severity of global cognitive impairment. Raw scores were converted to Z-scores for comparisons. RESULTS In the mild stage, results of all measures were comparable between AD and SubCI. In the moderate-severe stage, scores of CDT, CRT, CMT, FIG and FAB were significantly lower in SubCI. The results suggest that (given that global cognition is controlled for) visuo-perception, visuo-construction and semantic-numerical analyses of visual information may be more impaired in SubCI than AD. CONCLUSIONS AD and SubCI may be difficult to be differentiated in the mild stages, and the visuospatial cognitive system may be extensively defective in SubCI.
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Agarwal S, Alonso A, Soliman E, Chamberlain A, Ambrose M, Simpson R, Heiss G, Senga M, Fujii E, Dohi K, Sugiura S, Yamazato S, Nakamura M, Ito M, Bulkova V, Fiala M, Wichterle D, Chovancik J, Simek J, Havranek S, Brada J, Ivanova K, Kawamiya T, Kato K, Fujimaki T, Tanaka S, Yajima K, Hibino T, Yokoi K, Murohara T, Sprenger C, Oeff M, Haeusler KG, Tebbe U, Breithardt G, Meinertz T, Ravens U, Steinbeck G, Cozma DC, Pescariu S, Petrescu L, Luca C, Stoica L, Golda F, Morar M, Dragulescu SI, Ahmed S, Ranchor AV, Rienstra M, Wiesfeld ACP, Van Veldhuisen DJ, Van Gelder IC, Smit MD, Lefrandt JD, Van Gelder IC, Cozma DC, Pescariu S, Luca C, Petrescu L, Dragulescu SI, Inoue K, Makita N, Matsuo K, Shiono Y, Matsuo A, Fujita H, Kitamura M, Inoue K, Makita N, Matsuo K, Shiono Y, Matsuo A, Fujita H, Kitamura M, Providencia RA, Botelho A, Quintal N, Silva J, Seca L, Gomes PL, Leita-Marques AM, Ozcan Celebi O, Canbay A, Celebi S, Sahin D, Aydogdu S, Diker E, Bolohan FR, Leustean M, Indries V, Mihai M, Alexandru R, Cristian G, Ionescu DD, Zysko D, Gajek J, Kucharski W, Mazurek W, Atea LF, Arenal A, Datino T, Gonzalez-Torrecilla E, Atienza F, Calvo D, Almendral J, Fernandez-Aviles F, Chudzik M, Cygankiewicz I, Klimczak A, Oszczygiel A, Wranicz JK, Shaheen M, Patel D, Sonne K, Venkatraman P, Armanijian L, Bailey SM, Burkhardt JD, Natale A, Tunyan LG, Grigoryan SV, Gashi M, Pllana EP, Kocinaj DK, Hoyo J, Benito L, Fornes B, Montroig A, Fluxa G, Coll-Vinent B, Mont L, Naji F, Nedog V, Vokac D, Suran D, Kanic V, Granda S, Sabovic M. Poster Session 1: Atrial fibrillation clinical aspects. Europace 2009. [DOI: 10.1093/europace/euq214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Kitamura M, Shimizu M, Ino H, Okeie K, Yamaguchi M, Funjno N, Mabuchi H, Nakanishi I. Collagen remodeling and cardiac dysfunction in patients with hypertrophic cardiomyopathy: the significance of type III and VI collagens. Clin Cardiol 2009; 24:325-9. [PMID: 11303702 PMCID: PMC6654813 DOI: 10.1002/clc.4960240413] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND The relationship between the extent of myocardial interstitial fibrosis, the percentage of each type of collagen, and cardiac function in patients with hypertrophic cardiomyopathy (HC) has not been established. HYPOTHESIS The study aimed to establish that increases in some types of collagen may correlate with cardiac dysfunction. METHODS Mallory-Azan staining and immunohistochemical staining by the avidin-biotin-complex (ABC) method using anticollagen antibodies were performed on the myocardial biopsy specimens in 35 patients with HC, and the percentage and type of collagen present was determined. Left ventricular (LV) function was evaluated by cardiac catheterization and ventriculography. RESULTS The percentage of myocardial interstitial fibrosis correlated highly with indices of LV diastolic and systolic function. The amount of type III collagen correlated significantly with the peak negative dp/dt, the rapid filling volume/stroke volume, and the ejection fraction (EF). Significant correlations also were noted between the amount of type VI collagen and peak negative dp/dt, peak positive dp/dt, and EF. Type I collagen did not correlate with any of the LV function indices, and type IV collagen correlated only with peak ejection rate. Type V collagen did not accumulate substantially in the myocardial interstitium. CONCLUSIONS The progression of myocardial interstitial fibrosis in the HC heart adversely impacts both the diastolic and systolic function of the LV. Increases in the percentage of type III and VI collagen correlate with cardiac dysfunction.
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Kihira K, Numata S, Kitamura M, Terawaki S, Shomura Y, Komori H, Shibata N, Higuchi Y. The crystal structure analysis of release factor 3 from sulfate-reducing bacterium. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308085383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Kitamura M, Hara T, Adachi K, Takimoto-Kamimura M. Polymorphism and crystal structure of BPT propyl ester in various solvents. Acta Crystallogr A 2008. [DOI: 10.1107/s010876730808121x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Sato Y, Motoyama S, Maruyama K, Hayashi K, Usami S, Minamiya Y, Saito H, Kitamura M, Saito R, Ogawa J. Preventive Wrapping of the Fragile Tracheobronchial Wall Using a Flap of Latissimus Dorsi Muscle during Esophagectomy after Chemoradiotherapy. Eur Surg Res 2008; 41:279-83. [DOI: 10.1159/000142521] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2007] [Accepted: 02/05/2008] [Indexed: 11/19/2022]
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Takeshita N, Katagiri Y, Shibui Y, Kitamura M, Fukuda Y, Morita M. Reproductive genetic counseling in patients with complex chromosomal rearrangement. Fertil Steril 2007. [DOI: 10.1016/j.fertnstert.2007.07.820] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Yokouchi M, Hiramatsu N, Hayakawa K, Kasai A, Takano Y, Yao J, Kitamura M. Atypical, bidirectional regulation of cadmium-induced apoptosis via distinct signaling of unfolded protein response. Cell Death Differ 2007; 14:1467-74. [PMID: 17464326 DOI: 10.1038/sj.cdd.4402154] [Citation(s) in RCA: 129] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Cadmium is a widely distributed nephrotoxic metal that causes renal tubular injury. In this report, we investigated involvement of endoplasmic reticulum (ER) stress and individual unfolded protein responses in cadmium-initiated apoptosis of tubular epithelial cells. Cadmium chloride (CdCl(2)) induced expression of endogenous ER stress markers, GRP78, GRP94 and CHOP in vitro and in vivo, and subsequently caused cytological changes typical of apoptosis. Attenuation of ER stress by transfection with ER chaperone GRP78 or ORP150 suppressed CdCl(2)-triggered apoptosis. In response to CdCl(2), phosphorylation of RNA-dependent protein kinase-like ER kinase (PERK) and eukaryotic translation initiation factor 2alpha (eIF2alpha) was observed. Enhanced phosphorylation of eIF2alpha attenuated, whereas inhibition of eIF2alpha exacerbated CdCl(2)-induced apoptosis. Activating transcription factor 6 (ATF6) was also activated by CdCl(2) and blockade of this process suppressed induction of CHOP and thereby improved cell survival. CdCl(2) also triggered activation of the inositol-requiring ER-to-nucleus signal kinase 1 (IRE1)-X-box-binding protein 1 (XBP1) pathway and inhibition of XBP1 attenuated apoptosis independent of GRP78 and CHOP. c-Jun N-terminal kinase (JNK), another molecule downstream of IRE1, was also phosphorylated by CdCl(2) and its inhibition attenuated apoptosis. These results evidenced bidirectional regulation of apoptosis in cadmium-exposed cells. The ATF6 and IRE1 pathways cooperatively caused apoptosis via induction of CHOP, activation of XBP1 and phosphorylation of JNK, and the PERK-eIF2alpha pathway counteracted the proapoptotic processes.
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Yao J, Zhu Y, Sun W, Sawada N, Hiramatsu N, Takeda M, Kitamura M. Irsogladine maleate potentiates the effects of nitric oxide on activation of cAMP signalling pathways and suppression of mesangial cell mitogenesis. Br J Pharmacol 2007; 151:457-66. [PMID: 17435794 PMCID: PMC2013962 DOI: 10.1038/sj.bjp.0707255] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND AND PURPOSE Deficiency in nitric oxide (NO) is a major factor leading to deterioration and progression of certain glomerular diseases. Agents enhancing NO availability and potentiality are renoprotective. Irsogladine maleate (IM), an anti-ulcer drug, is reported to improve gastric blood flow via NO-dependent mechanisms. We, therefore, asked whether and how IM interacted with NO on glomerular mesangial cells. EXPERIMENTAL APPROACH Mesangial cells were exposed to IM and NO donors. Activation of cAMP signalling pathways was assessed by intracellular cAMP, phosphorylation of VASP, activation of the cAMP response element (CRE) and expression of CRE-regulated proteins. KEY RESULTS IM alone did not affect cell proliferation. However, it greatly enhanced the growth-inhibitory effect of NO donor S-nitroso-N-acetylpenicillamine (SNAP). IM acted synergistically with NO on suppression of mitogen-activated protein kinase activation, induction of gap junction protein connexin43, increase of intracellular cAMP, and phosphorylation of VASP. With the use of the CRE-SEAP-based reporting system, IM and SNAP cooperatively activated cAMP response elements (CRE). A similar activation of cAMP was induced by IM with two different NO donors, the sGC activator Bay 41-2272 and the cGMP analogue 8-bromo-cGMP. The effects of SNAP and IM on cAMP activation were mimicked by phosphodiesterase 3 (PDE3) and PDE4 inhibitors. In addition, IM markedly augmented cytokine-induced expression of iNOS, production of NO and activation of CRE. CONCLUSION AND IMPLICATIONS The effects of NO were greatly potentiated by IM through synergistic activation of cAMP pathway. Combined therapy with IM and NO may be developed for certain renal diseases.
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Ueda Y, Iida Y, Manabe H, Kitamura M. Control of Polymorphs and Crystal Habit in Crystallization of N2-(1(S)-Ethoxycarbonyl-3-Phenylpropyl)-N6-Trifluoroacetyl-L-Lysine. Chem Eng Res Des 2007. [DOI: 10.1205/cherd05189] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Alique M, Moreno V, Kitamura M, Xu Q, Lucio-Cazana FJ. Kinase-dependent, retinoic acid receptor-independent up-regulation of cyclooxygenase-2 by all-trans retinoic acid in human mesangial cells. Br J Pharmacol 2006; 149:215-25. [PMID: 16894348 PMCID: PMC2013793 DOI: 10.1038/sj.bjp.0706842] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND AND PURPOSE Preliminary results in human mesangial cells (MC) suggested that all-trans retinoic acid (ATRA) increased the expression of COX-2 and the production of prostaglandin E2 (PGE2), a PG with anti-inflammatory effects in MC. The aim of this work is to confirm that ATRA increases the expression of COX-2 in MC and to examine the mechanisms involved. EXPERIMENTAL APPROACH Cultured MC were treated with ATRA. COX expression and kinase activity were analyzed by Western blot. Transcriptional mechanisms were analyzed by Northern blot, RT-PCR and promoter assays. KEY RESULTS COX-2 and COX-1 expression and PGE2 production were increased by ATRA. COX-2 played a role in PGE2 production as production was only partially inhibited by COX-1 inhibitor SC-560. COX-2 up-regulation by ATRA was due to transcriptional mechanisms as pre-incubation with actinomycin D abolished it and ATRA increased the expression of COX-2 mRNA and the activity of a human COX-2 promoter construct, whereas post-transcriptional mechanisms were not found. Retinoic acid receptors (RAR) were not involved in the up-regulation of COX-2 by ATRA since it was not inhibited by RAR-pan-antagonists and the RAR-pan-agonist TTNPB did not up-regulate COX-2. Instead ATRA might act through a sustained activation of extracellular signal-regulated kinase 1/2 (ERK1/2) since up-regulation of COX-2 was prevented by inhibition of the activation of ERK1/2 with PD098059. Also ERK1/2, as well as downstream signalling proteins from ERK1/2, remained phosphorylated when COX-2 increased 24 h later. CONCLUSIONS AND IMPLICATIONS These results highlight the relevance of RAR-independent mechanisms to the biological effects of ATRA.
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Yamauchi K, Takano Y, Kasai A, Hayakawa K, Hiramatsu N, Enomoto N, Yao J, Kitamura M. Screening and identification of substances that regulate nephrin gene expression using engineered reporter podocytes. Kidney Int 2006; 70:892-900. [PMID: 16820792 DOI: 10.1038/sj.ki.5001625] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Downregulation of nephrin in podocytes leads to development of proteinuria in human and experimental kidney diseases. However, little is understood about pathophysiologic substances that regulate nephrin expression. In this report, we established conditionally immortalized reporter podocytes REPON for sensitive, continuous monitoring of nephrin gene expression. A murine podocyte cell line harboring a temperature-sensitive simian virus 40 large T antigen was stably transfected with a gene encoding secreted alkaline phosphatase (SEAP) under the control of the 5.4 or 8.3 kb nephrin gene promoter. The established reporter cells REPON5.4 and REPON8.3 were exposed to various pathophysiologic substances, and culture media were subjected to SEAP assay to identify regulators of nephrin gene expression. Among the bioactive substances tested, three physiological ligands of nuclear receptors including all-trans-retinoic acid, 1,25-dihydroxyvitamin D3, and dexamethasone significantly activated the nephrin gene promoter in a dose-dependent manner. These effects were observed in both REPON5.4 and REPON8.3 and were associated with upregulation of nephrin mRNA. The effects of these substances were synergistic, and the maximum effect was observed by combination of three agents. In contrast, inflammatory cytokines interleukin-1beta (IL-1beta) and tumor necrosis factor-alpha as well as phorbol ester significantly downregulated the activity of the nephrin promoter as well as nephrin gene expression. These results elucidated the bidirectional regulation of nephrin by distinct pathophysiologic substances and may provide molecular bases for explaining how proteinuria is induced under pathologic situations and why some ligands for nuclear receptors have the anti-proteinuric potential.
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Kawada T, Nakamichi K, Hisano N, Kitamura M, Miyahara K. Cell-phone based assistance for waterworks/sewage plant maintenance. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2006; 53:245-52. [PMID: 16722075 DOI: 10.2166/wst.2006.129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Cell-phones are now incorporating the functions necessary for them to be used as mobile IT devices. In this paper, we present our results of the evaluation of cell-phones as the mobile IT device to assist workers in industrial plants. We use waterworks and sewage plants as examples. By employing techniques to squeeze the SCADA screen on CRT into a small cell-phone LCD, we have made it easier for a plant's field workers to access the information needed for effective maintenance, regardless of location. An idea to link SCADA information and the plant facility information on the cell-phone is also presented. Should an accident or emergency situation arise, these cell-phone-based IT systems can efficiently deliver the latest plant information, thus the worker out in the field can respond to and resolve the emergency.
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Funatsu H, Miyazawa T, Saigusa H, Kitamura M. Laryngeal deviation: condition mimicking submucosal tumor. J Postgrad Med 2006; 52:49-50. [PMID: 16534168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/07/2023] Open
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Uchida Y, Yamazaki H, Watanabe S, Hayakawa K, Meng Y, Hiramatsu N, Kasai A, Yamauchi K, Yao J, Kitamura M. Enhancement of NF-kappaB activity by resveratrol in cytokine-exposed mesangial cells. Clin Exp Immunol 2005; 142:76-83. [PMID: 16178859 PMCID: PMC1809482 DOI: 10.1111/j.1365-2249.2005.02895.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Resveratrol, a natural polyphenolic phytoalexin, has been considered as a potential anti-inflammatory agent because of its suppressive effect on nuclear factor-kappaB (NF-kappaB). However, we recently found that treatment of glomerular mesangial cells with resveratrol significantly and dose-dependently enhanced NF-kappaB activation triggered by proinflammatory cytokines. This finding was evidenced by different reporter assays as well as by expression of an endogenous NF-kappaB-dependent gene, intercellular adhesion molecule-1. The NF-kappaB promoting effect of resveratrol was also observed in renal tubular LLCPK1 cells, but not in HepG2 hepatoma cells. In all cell types tested, treatment with resveratrol alone did not affect NF-kappaB activity. The enhanced activation of NF-kappaB by resveratrol progressed for at least 24 h and was accompanied by sustained down-regulation of an endogenous NF-kappaB inhibitor, IkappaBbeta, but not IkappaBalpha. Although expression of inducible nitric oxide synthase was suppressed by resveratrol, nitric oxide, a negative regulator of NF-kappaB, was not involved in the regulation of NF-kappaB by resveratrol. These data elucidated, for the first time, that resveratrol may enhance activation of NF-kappaB under certain circumstances.
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Xu MS, Endres RG, Tsukamoto S, Kitamura M, Ishida S, Arakawa Y. Conformation and local environment dependent conductance of DNA molecules. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2005; 1:1168-72. [PMID: 17193411 DOI: 10.1002/smll.200500216] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
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Kitamura M, Kitaichi N, Takeuchi M, Kitamei H, Namba K, Yamagishi SI, Iwabuchi K, Onoé K, Ohno S. Decrease in the glyceraldehyde derived advanced glycation end products in the sera of patients with Vogt-Koyanagi-Harada disease. Br J Ophthalmol 2005; 89:1407-9. [PMID: 16234440 PMCID: PMC1772931 DOI: 10.1136/bjo.2005.072678] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND/AIMS Advanced glycation end products (AGEs) are considered to act as mediators of both age related pathologies and diabetic complications. It was recently reported that glyceraldehyde derived AGE (AGE-2) has a strong biological effect on various diseases. The aim of this study was to investigate the serum AGE-2 levels in Vogt-Koyanagi-Harada (VKH) disease. METHODS Sera were obtained from 31 patients with active VKH. 20 of these 31 patients were treated with systemic corticosteroids. As controls, 33 healthy volunteers were also examined. The serum AGE-2 levels were determined with a competitive enzyme linked immunosorbent assay using AGE-2 polyclonal antibody. RESULTS The mean AGE-2 level in the sera of patients with VKH disease was 4.91 (SD 2.23) U/ml, which was significantly lower than that of the healthy control subjects (8.32 (2.94), p<0.001). The average serum AGE-2 level significantly increased to 13.49 (2.17) U/ml after the patients were treated with systemic corticosteroids (p<0.001). CONCLUSIONS These results suggest that AGE-2 may be involved in the onset of VKH disease.
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Hiramatsu T, Harada Y, Hibino N, Masuhara H, Honda Y, Satomi G, Yasukochi S, Matsui H, Otokozawa K, Kajiyama Y, Kitamura M. [Comparison of right ventricular function between prevention and enlargement of pulmonary valve annulus after repair of tetralogy of Fallot; mid-term results]. KYOBU GEKA. THE JAPANESE JOURNAL OF THORACIC SURGERY 2005; 58:1049-52. [PMID: 16281854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Total of 41 patients with tetralogy of Fallot (TOF) who underwent intracardiac repair from 1993 to 1998 were divided into 2 groups: preservation (n = 14) or enlargement (n = 27) of the pulmonary valve annulus. The procedure was decided on the Z value of the annular size: above or under -2 SD of the standard value. Although postoperative right ventricular (RV) diastolic volume (RVEDV) and cardiothoracic ratio (CTR) were larger than the preservation group and pulmonary regurgitation (PR) existed in the enlargement group, RV pressure was decreased and central venous pressure (CVP) was low and RV contraction was preserved. The exercise capacity was also good and no significant arrhythmia was recognized. Our mid-term results showed that appropriate enlargement of the pulmonary valve annulus preserved good RV function in patients with TOF.
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Kitagawa Y, Sekiya I, Kitamura M, Nakanishi T, Nakamura KT. Crystal structure of iron superoxide dismutase from obligate anaerobic bacterium. Acta Crystallogr A 2005. [DOI: 10.1107/s0108767305091105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Hiramatsu T, Harada Y, Hibino N, Motohashi S, Masuhara H, Satomi G, Yasukochi S, Otokozawa K, Kajiyama Y, Kitamura M. [Differences in postoperative course by preoperative left ventricular volume after closure of ventricular septal defect during early infancy]. KYOBU GEKA. THE JAPANESE JOURNAL OF THORACIC SURGERY 2005; 58:71-3. [PMID: 15678970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
A total of 38 early infants with ventricular septal defect (VSD) were divided into 2 groups by preoperative LVEDV. The group A (n=14, LVEDV>250% N) showed significantly longer period of intubation, cathecholamine drip, and hospitalization compared with the group B (n=28, LVEDV<250% N). At dischage, both groups showed significant lowered right ventricular (RV) pressure, but LVSF in the group A was significantly lower than that in the group B. The patients with larger left ventricular (LV) volume preoperatively were thought to be potential high-risk groups in cardiac and pulmonary function and their postoperative course was prolonged and recovery of LV function was worse. In such patients, special care is mandatory to do postoperative management and to decide timing of operation.
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Sato N, Kojika M, Yaegashi Y, Suzuki Y, Kitamura M, Endo S, Saito K. Mini-laparoscopic appendectomy using a needle loop retractor offers optimal cosmetic results. Surg Endosc 2004; 18:1578-81. [PMID: 15580448 DOI: 10.1007/s00464-003-8248-0] [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] [Received: 09/08/2003] [Accepted: 02/05/2004] [Indexed: 10/26/2022]
Abstract
BACKGROUND Do conventional laparoscopic appendectomy (LA) techniques provide truly satisfying results for patients and surgeons? We have devised a more advanced technique that improves cosmesis. METHODS A 2-mm scope is inserted at the umbilicus, and a 12-mm working trocar is inserted through a suprapubic incision placed below the line of pubic hair. A needle loop retractor (NLR) is inserted to hold the appendix in the lower right abdomen. In this NLR, a stainless steel wire is placed within a needle having a diameter of 2 mm. From the suprapubic trocar, a bipolar coagulator is inserted to transect the appendiceal mesentery. A series of 30 patients underwent this procedure. RESULTS There were no conversions to laparotomy and no intra- or postoperative complications. CONCLUSIONS Laparoscopic appendectomy using a 2-mm scope, suprapubic trocar, and an NLR yields optimal cosmetic results. For surgeons, the NLR allows the appendix to be held more firmly than then a 5- or 2-mm grasping forceps is used.
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Yokoyama S, Naito Y, Koh E, Ohta B, Kitamura M. [Ruptured syphilitic ascending aortic aneurysm; report of a case]. KYOBU GEKA. THE JAPANESE JOURNAL OF THORACIC SURGERY 2004; 57:1225-8. [PMID: 15609662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
Syphilitic cardiovascular disease has become a rarity today. It most commonly affects the ascending aorta and aortic arch. A case is reported of a 50-year-old female with a ruptured syphilitic ascending aortic aneurysm who underwent an emergency operation. The patient was emergently admitted with complaint of severe dyspnea, circulatory shock due to cardiac tamponade was observed in the emergency room. Bentall's procedure was performed. Intraoperative findings showed multi-cystic dilatation of an aortic root. Penetration was existed on right side posterior wall of an aortic root. Postoperative pathological examination of the aneurysmal wall revealed the characteristic finding of syphilitic aortitis. The postoperative course was uneventful and the patient has been doing well at period of 3 years after operation.
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Masuhara H, Hiramatsu T, Harada Y, Hibino N, Honda Y, Satomi G, Yasukochi S, Matsui H, Otokozawa K, Kitamura M, Kajiyama Y. [Congenital supravalvular aortic stenosis; report of a case]. KYOBU GEKA. THE JAPANESE JOURNAL OF THORACIC SURGERY 2004; 57:1135-8. [PMID: 15553032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
We experienced a successful surgical case of extended aortoplasty by means of Doty's method (two sinus reconstruction) for congenital supravalvular aortic stenosis (SAS). Case was 12-year-old boy, who had no complaint except heart murmur. The retrograde aortography demonstrated localized stenosis just above the aortic valve, and it was an hour-glass type. The preoperative peak systolic pressure gradient between the left ventricle and ascending aorta was 56 mmHg, which was improved postoperatively. This case showed excellent results. Doty's aortoplasty was favorable method for SAS without deformity of aortic valve and coronary obstruction.
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75
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Sato N, Kojika M, Yaegashi Y, Suzuki Y, Kitamura M, Endo S, Saito K. Minilaparoscopic appendectomy using a needle loop retractor offers optimal cosmetic results. Surg Endosc 2004. [DOI: 10.1007/bf02637123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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