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Izumi S, Oichi T, Shetye SS, Zhang K, Wilson K, Iwamoto M, Kuo CK, Akabudike N, Adachi N, Soslowsky LJ, Enomoto-Iwamoto M. Inhibition of glucose use improves structural recovery of injured Achilles tendon in mice. J Orthop Res 2022; 40:1409-1419. [PMID: 34460123 PMCID: PMC8882710 DOI: 10.1002/jor.25176] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 06/21/2021] [Accepted: 08/16/2021] [Indexed: 02/04/2023]
Abstract
Injured tendons do not regain their native structure except at fetal or very young ages. Healing tendons often show mucoid degeneration involving accumulation of sulfated glycosaminoglycans (GAGs), but its etiology and molecular base have not been studied substantially. We hypothesized that quality and quantity of gene expression involving the synthesis of proteoglycans having sulfated GAGs are altered in injured tendons and that a reduction in synthesis of sulfated GAGs improves structural and functional recovery of injured tendons. C57BL6/j mice were subjected to Achilles tendon tenotomy surgery. The injured tendons accumulated sulfate proteoglycans as early as 1-week postsurgery and continued so by 4-week postsurgery. Transcriptome analysis revealed upregulation of a wide range of proteoglycan genes that have sulfated GAGs in the injured tendons 1 and 3 weeks postsurgery. Genes critical for enzymatic reaction of initiation and elongation of chondroitin sulfate GAG chains were also upregulated. After the surgery, mice were treated with the 2-deoxy-d-glucose (2DG) that inhibits conversion of glucose to glucose-6-phosphate, an initial step of glucose metabolism as an energy source and precursors of monosaccharides of GAGs. The 2DG treatment reduced accumulation of sulfated proteoglycans, improved collagen fiber alignment, and reduced the cross-sectional area of the injured tendons. The modulus of the 2DG-treated groups was higher than that in the vehicle group, but not of statistical significance. Our findings suggest that mucoid degeneration in injured tendons may result from the upregulated expression of genes involved the synthesis of sulfate proteoglycans and can be inhibited by reduction of glucose utilization.
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Affiliation(s)
- Soutarou Izumi
- Department of Orthopaedics, School of Medicine, University of Maryland, Baltimore,,Department of Orthopaedic Surgery, Graduate School of Biomedical and Health sciences, Hiroshima University, Japan
| | - Takeshi Oichi
- Department of Orthopaedics, School of Medicine, University of Maryland, Baltimore
| | - Snehal S. Shetye
- Department of Orthopaedic Surgery, McKay Orthopaedic Research Laboratory, University of Pennsylvania, Philadelphia PA
| | - Kairui Zhang
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University
| | - Kimberly Wilson
- Department of Orthopaedics, School of Medicine, University of Maryland, Baltimore
| | - Masahiro Iwamoto
- Department of Orthopaedics, School of Medicine, University of Maryland, Baltimore
| | - Catherine K. Kuo
- Fischell Department of Bioengineering, University of Maryland College Park
| | - Ngozi Akabudike
- Department of Orthopaedics, School of Medicine, University of Maryland, Baltimore
| | - Nobuo Adachi
- Department of Orthopaedic Surgery, Graduate School of Biomedical and Health sciences, Hiroshima University, Japan
| | - Louis J. Soslowsky
- Department of Orthopaedic Surgery, McKay Orthopaedic Research Laboratory, University of Pennsylvania, Philadelphia PA
| | - Motomi Enomoto-Iwamoto
- Department of Orthopaedics, School of Medicine, University of Maryland, Baltimore,,Correspondence: Motomi Enomoto-Iwamoto PhD, DDS, University of Maryland, Baltimore, School of Medicine, Department of Orthopaedics, 670 W Baltimore St., HSFIII Rm 7172, Baltimore MD, 21209, USA, Phone: 410-706-4767,
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Banzai K, Izumi S. Cis-regulatory elements of the cholinergic gene locus in the silkworm Bombyx mori. Insect Mol Biol 2022; 31:73-84. [PMID: 34549831 DOI: 10.1111/imb.12739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 09/14/2021] [Accepted: 09/17/2021] [Indexed: 06/13/2023]
Abstract
Genes of choline acetyltransferase (ChAT) and vesicular acetylcholine transporter are encoded in the same gene locus, called the cholinergic gene locus. They are essential in cholinergic neurons to maintain their functional phenotype. The genomic structure of the cholinergic gene locus is conserved among invertebrates to mammals. However, the cholinergic gene expression in a specific subset of neurons is unknown in insects except for Drosophila melanogaster. In this study, we analysed the upstream sequence of cholinergic gene locus in the silkworm Bombyx mori to identify specific cis-regulatory regions. We found multiple enhancer regions that are localized within 1 kb upstream of the cholinergic gene locus. The combination of promoter assays using small deletions and bioinformatic analysis among insect species illuminates two conserved sequences in the cis-regulatory region: TGACGTA and CCAAT, which are known as the cAMP response element and CAAT box, respectively. We found that dibutyryl-cAMP, an analogue of cAMP, influences the expression of ChAT in B. mori. Tissue-specific expression analysis of transcriptional factors identified potential candidates that control the cholinergic gene locus expression. Our investigation provides new insight into the regulation mechanism of cholinergic neuron-specific gene machinery in this lepidopteran insect.
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Affiliation(s)
- K Banzai
- Department of Biological Sciences, Kanagawa University, Hiratsuka, Kanagawa, Japan
| | - S Izumi
- Department of Biological Sciences, Kanagawa University, Hiratsuka, Kanagawa, Japan
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Wells AU, Flaherty KR, Brown KK, Inoue Y, Devaraj A, Richeldi L, Moua T, Crestani B, Wuyts WA, Stowasser S, Quaresma M, Goeldner RG, Schlenker-Herceg R, Kolb M, Aburto M, Acosta O, Andrews C, Antin-Ozerkis D, Arce G, Arias M, Avdeev S, Barczyk A, Bascom R, Bazdyrev E, Beirne P, Belloli E, Bergna M, Bergot E, Bhatt N, Blaas S, Bondue B, Bonella F, Britt E, Buch K, Burk J, Cai H, Cantin A, Castillo Villegas D, Cazaux A, Cerri S, Chaaban S, Chaudhuri N, Cottin V, Crestani B, Criner G, Dahlqvist C, Danoff S, Dematte D'Amico J, Dilling D, Elias P, Ettinger N, Falk J, Fernández Pérez E, Gamez-Dubuis A, Giessel G, Gifford A, Glassberg M, Glazer C, Golden J, Gómez Carrera L, Guiot J, Hallowell R, Hayashi H, Hetzel J, Hirani N, Homik L, Hope-Gill B, Hotchkin D, Ichikado K, Ilkovich M, Inoue Y, Izumi S, Jassem E, Jones L, Jouneau S, Kaner R, Kang J, Kawamura T, Kessler R, Kim Y, Kishi K, Kitamura H, Kolb M, Kondoh Y, Kono C, Koschel D, Kreuter M, Kulkarni T, Kus J, Lebargy F, León Jiménez A, Luo Q, Mageto Y, Maher T, Makino S, Marchand-Adam S, Marquette C, Martinez R, Martínez M, Maturana Rozas R, Miyazaki Y, Moiseev S, Molina-Molina M, Morrison L, Morrow L, Moua T, Nambiar A, Nishioka Y, Nunes H, Okamoto M, Oldham J, Otaola M, Padilla M, Park J, Patel N, Pesci A, Piotrowski W, Pitts L, Poonyagariyagorn H, Prasse A, Quadrelli S, Randerath W, Refini R, Reynaud-Gaubert M, Riviere F, Rodríguez Portal J, Rosas I, Rossman M, Safdar Z, Saito T, Sakamoto N, Salinas Fénero M, Sauleda J, Schmidt S, Scholand M, Schwartz M, Shapera S, Shlobin O, Sigal B, Silva Orellana A, Skowasch D, Song J, Stieglitz S, Stone H, Strek M, Suda T, Sugiura H, Takahashi H, Takaya H, Takeuchi T, Thavarajah K, Tolle L, Tomassetti S, Tomii K, Valenzuela C, Vancheri C, Varone F, Veeraraghavan S, Villar A, Weigt S, Wemeau L, Wuyts W, Xu Z, Yakusevich V, Yamada Y, Yamauchi H, Ziora D. Nintedanib in patients with progressive fibrosing interstitial lung diseases-subgroup analyses by interstitial lung disease diagnosis in the INBUILD trial: a randomised, double-blind, placebo-controlled, parallel-group trial. Lancet Respir Med 2020; 8:453-460. [PMID: 32145830 DOI: 10.1016/s2213-2600(20)30036-9] [Citation(s) in RCA: 263] [Impact Index Per Article: 65.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 01/06/2020] [Accepted: 01/16/2020] [Indexed: 12/20/2022]
Abstract
BACKGROUND The INBUILD trial investigated the efficacy and safety of nintedanib versus placebo in patients with progressive fibrosing interstitial lung diseases (ILDs) other than idiopathic pulmonary fibrosis (IPF). We aimed to establish the effects of nintedanib in subgroups based on ILD diagnosis. METHODS The INBUILD trial was a randomised, double-blind, placebo-controlled, parallel group trial done at 153 sites in 15 countries. Participants had an investigator-diagnosed fibrosing ILD other than IPF, with chest imaging features of fibrosis of more than 10% extent on high resolution CT (HRCT), forced vital capacity (FVC) of 45% or more predicted, and diffusing capacity of the lung for carbon monoxide (DLco) of at least 30% and less than 80% predicted. Participants fulfilled protocol-defined criteria for ILD progression in the 24 months before screening, despite management considered appropriate in clinical practice for the individual ILD. Participants were randomly assigned 1:1 by means of a pseudo-random number generator to receive nintedanib 150 mg twice daily or placebo for at least 52 weeks. Participants, investigators, and other personnel involved in the trial and analysis were masked to treatment assignment until after database lock. In this subgroup analysis, we assessed the rate of decline in FVC (mL/year) over 52 weeks in patients who received at least one dose of nintedanib or placebo in five prespecified subgroups based on the ILD diagnoses documented by the investigators: hypersensitivity pneumonitis, autoimmune ILDs, idiopathic non-specific interstitial pneumonia, unclassifiable idiopathic interstitial pneumonia, and other ILDs. The trial has been completed and is registered with ClinicalTrials.gov, number NCT02999178. FINDINGS Participants were recruited between Feb 23, 2017, and April 27, 2018. Of 663 participants who received at least one dose of nintedanib or placebo, 173 (26%) had chronic hypersensitivity pneumonitis, 170 (26%) an autoimmune ILD, 125 (19%) idiopathic non-specific interstitial pneumonia, 114 (17%) unclassifiable idiopathic interstitial pneumonia, and 81 (12%) other ILDs. The effect of nintedanib versus placebo on reducing the rate of FVC decline (mL/year) was consistent across the five subgroups by ILD diagnosis in the overall population (hypersensitivity pneumonitis 73·1 [95% CI -8·6 to 154·8]; autoimmune ILDs 104·0 [21·1 to 186·9]; idiopathic non-specific interstitial pneumonia 141·6 [46·0 to 237·2]; unclassifiable idiopathic interstitial pneumonia 68·3 [-31·4 to 168·1]; and other ILDs 197·1 [77·6 to 316·7]; p=0·41 for treatment by subgroup by time interaction). Adverse events reported in the subgroups were consistent with those reported in the overall population. INTERPRETATION The INBUILD trial was not designed or powered to provide evidence for a benefit of nintedanib in specific diagnostic subgroups. However, its results suggest that nintedanib reduces the rate of ILD progression, as measured by FVC decline, in patients who have a chronic fibrosing ILD and progressive phenotype, irrespective of the underlying ILD diagnosis. FUNDING Boehringer Ingelheim.
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Affiliation(s)
- Athol U Wells
- National Institute for Health Research Respiratory Biomedical Research Unit, Royal Brompton and Harefield NHS Foundation Trust, London, UK
| | - Kevin R Flaherty
- Division of Pulmonary and Critical Care Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Kevin K Brown
- Department of Medicine, National Jewish Health, Denver, CO, USA
| | - Yoshikazu Inoue
- Clinical Research Center, National Hospital Organization Kinki-Chuo Chest Medical Center, Sakai City, Osaka, Japan
| | - Anand Devaraj
- Department of Radiology, Royal Brompton and Harefield NHS Foundation Trust, London, UK; National Heart and Lung Institute, Imperial College, London, UK
| | - Luca Richeldi
- Fondazione Policlinico A. Gemelli IRCCS, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Teng Moua
- Division of Pulmonary and Critical Care Medicine, Mayo Clinic Rochester, Rochester, MN, USA
| | - Bruno Crestani
- Université de Paris, Inserm U1152, APHP, Hôpital Bichat, Centre de reference constitutif pour les maladies pulmonaires rares, Paris, France
| | - Wim A Wuyts
- Unit for Interstitial Lung Diseases, Department of Pulmonary Medicine, University Hospitals Leuven, Leuven, Belgium
| | | | - Manuel Quaresma
- Boehringer Ingelheim International, Ingelheim am Rhein, Germany
| | | | | | - Martin Kolb
- McMaster University and St Joseph's Healthcare, Hamilton, Ontario, Canada
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Kakuwa T, Ariga A, Takasaki J, Kato M, Igari T, Shida Y, Okafuji T, Nakamura S, Miyazaki Y, Katano H, Iikura M, Izumi S, Sugiyama H. Mucor pulmonary embolism in a patient with myelodysplastic syndrome. Respir Med Case Rep 2020; 30:101035. [PMID: 32190545 PMCID: PMC7068122 DOI: 10.1016/j.rmcr.2020.101035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Revised: 03/02/2020] [Accepted: 03/02/2020] [Indexed: 11/28/2022] Open
Abstract
Mucormycosis is a life-threatening infectious disease that occurs most commonly in immunocompromised patients such as those with hematological malignancies. Its clinical symptoms and associated radiological findings vary and specific biomarkers and culture characteristics have not been defined. An 85-year-old man who had been treated for myelodysplastic syndrome and tuberculosis for several months presented with subacute fever and worsening left-side chest pain. Contrast-enhanced computed tomography images depicted massive tumor-like consolidation without enhancement, expanding from the left lower lobe. Emboli that did not respond to anticoagulants were detected in the left descending pulmonary artery. Despite intensive treatment he developed multiple organ failure and died 47 days after hospitalization. Gross pathology of a lung autopsy specimen revealed left lower pulmonary arterial emboli and pulmonary infarction, which was concluded to be the direct cause of death. The emboli were histopathologically identified as invasive mycelia in vessels. Mucor sp. was detected via real-time polymerase chain reaction and immunohistopathological analyses revealed that the mold in the blood vessels of lung tissue was partially positive for the mucor antigen. In the present case of Mucor sp. pulmonary emboli in a patient with myelodysplastic syndrome, radiographic findings were hard to distinguish from those typical of a lung abscess.
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Affiliation(s)
- T Kakuwa
- Department of Respiratory Medicine, National Center for Global Health and Medicine, Tokyo, Japan
| | - A Ariga
- Department of Respiratory Medicine, National Center for Global Health and Medicine, Tokyo, Japan.,Department of Orthopedics, Tokyo Medical and Dental University, Tokyo, Japan
| | - J Takasaki
- Department of Respiratory Medicine, National Center for Global Health and Medicine, Tokyo, Japan
| | - M Kato
- Department of Pathology, National Center for Global Health and Medicine, Tokyo, Japan
| | - T Igari
- Department of Pathology, National Center for Global Health and Medicine, Tokyo, Japan
| | - Y Shida
- Department of Radiology, National Center for Global Health and Medicine, Tokyo, Japan
| | - T Okafuji
- Department of Radiology, National Center for Global Health and Medicine, Tokyo, Japan
| | - S Nakamura
- Department of Chemotherapy and Mycoses, National Institute of Infectious Diseases, Tokyo, Japan.,Department of Microbiology, Tokyo Medical University, Tokyo, Japan
| | - Y Miyazaki
- Department of Chemotherapy and Mycoses, National Institute of Infectious Diseases, Tokyo, Japan
| | - H Katano
- Department of Pathology, National Institute of Infectious Diseases, Tokyo, Japan
| | - M Iikura
- Department of Respiratory Medicine, National Center for Global Health and Medicine, Tokyo, Japan
| | - S Izumi
- Department of Respiratory Medicine, National Center for Global Health and Medicine, Tokyo, Japan
| | - H Sugiyama
- Department of Respiratory Medicine, National Center for Global Health and Medicine, Tokyo, Japan
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Hamanishi M, Yasunaga Y, Yamasaki T, Mori R, Shoji T, Izumi S, Hachisuka S, Adachi N, Ochi M. Lipoma arborescens of the hip: A case report. J Orthop Sci 2020; 25:188-192. [PMID: 28688812 DOI: 10.1016/j.jos.2017.06.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 05/19/2017] [Accepted: 06/02/2017] [Indexed: 11/16/2022]
Affiliation(s)
| | - Yuji Yasunaga
- Hiroshima Prefectural Rehabilitation Center, Hiroshima, Japan
| | - Takuma Yamasaki
- Department of Orthopaedic Surgery, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - Ryo Mori
- National Hospital Organization Kure Medical Center, Hiroshima, Japan
| | - Takeshi Shoji
- Department of Orthopaedic Surgery, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - Soutarou Izumi
- Department of Orthopaedic Surgery, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | | | - Nobuo Adachi
- Department of Orthopaedic Surgery, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - Mitsuo Ochi
- Department of Orthopaedic Surgery, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
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Izumi S, Otsuru S, Adachi N, Akabudike N, Enomoto-Iwamoto M. Control of glucose metabolism is important in tenogenic differentiation of progenitors derived from human injured tendons. PLoS One 2019; 14:e0213912. [PMID: 30883580 PMCID: PMC6422258 DOI: 10.1371/journal.pone.0213912] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 03/04/2019] [Indexed: 02/06/2023] Open
Abstract
Glucose metabolism is altered in injured and healing tendons. However, the mechanism by which the glucose metabolism is involved in the pathogenesis of tendon healing process remains unclear. Injured tendons do not completely heal, and often induce fibrous scar and chondroid lesion. Because previous studies have shown that tendon progenitors play roles in tendon repair, we asked whether connective tissue progenitors appearing in injured tendons alter glucose metabolism during tendon healing process. We isolated connective tissue progenitors from the human injured tendons, obtained at the time of primary surgical repair of rupture or laceration. We first characterized the change in glucose metabolism by metabolomics analysis using [1,2-13C]-glucose using the cells isolated from the lacerated flexor tendon. The flux of glucose to the glycolysis pathway was increased in the connective tissue progenitors when they proceeded toward tenogenic and chondrogenic differentiation. The influx of glucose to the tricarboxylic acid (TCA) cycle and biosynthesis of amino acids from the intermediates of the TCA cycle were strongly stimulated toward chondrogenic differentiation. When we treated the cultures with 2-deoxy-D-glucose (2DG), an inhibitor of glycolysis, 2DG inhibited chondrogenesis as characterized by accumulation of mucopolysaccharides and expression of AGGRECAN. Interestingly, 2DG strongly stimulated expression of tenogenic transcription factor genes, SCLERAXIS and MOHAWK under both chondrogenic and tenogenic differentiation conditions. The findings suggest that control of glucose metabolism is beneficial for tenogenic differentiation of connective tissue progenitors.
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Affiliation(s)
- Soutarou Izumi
- Department of Orthopaedics, University of Maryland, Baltimore, Baltimore, Maryland, United States of America
- Department of Orthopaedic Surgery, Hiroshima University, Hiroshima, Japan
| | - Satoru Otsuru
- Department of Orthopaedics, University of Maryland, Baltimore, Baltimore, Maryland, United States of America
| | - Nobuo Adachi
- Department of Orthopaedic Surgery, Hiroshima University, Hiroshima, Japan
| | - Ngozi Akabudike
- Department of Orthopaedics, University of Maryland, Baltimore, Baltimore, Maryland, United States of America
- * E-mail: (MEI); (NA)
| | - Motomi Enomoto-Iwamoto
- Department of Orthopaedics, University of Maryland, Baltimore, Baltimore, Maryland, United States of America
- * E-mail: (MEI); (NA)
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Brown S, Distefano E, Izumi S, Wade M, Lockhart J, Jaboin J. Caring Wisely: A Model for Improving Advanced Care Planning for Cancer Patients. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1970] [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: 11/26/2022]
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Shoji T, Yamasaki T, Izumi S, Kenji M, Sawa M, Yasunaga Y, Adachi N. The effect of cup medialization and lateralization on hip range of motion in total hip arthroplasty. Clin Biomech (Bristol, Avon) 2018; 57:121-128. [PMID: 29986274 DOI: 10.1016/j.clinbiomech.2018.06.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 06/18/2018] [Accepted: 06/22/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND There is little description of the effect of cup position on the hip range of motion in total hip arthroplasty. The purpose is to evaluate the effect of cup medialization/lateralization with a compensatory increase/decrease in femoral offset on the hip range of motion, and whether the bone morphology of the anterior inferior iliac spine affects hip range of motion in total hip arthroplasty. METHODS Using the CT data of 100 patients (male; 30, female; 70), 3D-dynamic motion analysis was performed in four scenarios with cup medialization/lateralization with the same/decreased global offset. We calculated the range of motion before component impingement and bony impingement in flexion, internal rotation and external rotation using the software. Furthermore, we measured bony morphological features of anterior inferior iliac spine, and we analyzed the correlations among them. FINDINGS We found that the cup medialization with the same stem offset had negative effects on hip range of motion in flexion and internal rotation due to bony impingement, whereas cup medialization caused external rotation to significantly decrease with the same global offset. On the other hand, cup lateralization with the same global offset had negative effects on flexion and internal rotation, whereas external rotation increased. Furthermore, there were negative correlations among flexion and laterally large and steep anterior inferior iliac spine. INTERPRETATION Our results demonstrated that the advantage of cup medialization can depend on the individual anatomy such as bony morphology of anterior inferior iliac spine in flexion.
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Affiliation(s)
- Takeshi Shoji
- Department of Orthopaedic Surgery, Graduate School of Biomedical Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8551, Japan.
| | - Takuma Yamasaki
- Department of Orthopaedic Surgery, Graduate School of Biomedical Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8551, Japan
| | - Soutarou Izumi
- Department of Orthopaedic Surgery, Graduate School of Biomedical Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8551, Japan
| | - Mifuji Kenji
- Department of Orthopaedic Surgery, Graduate School of Biomedical Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8551, Japan
| | - Mikiya Sawa
- Department of Orthopaedic Surgery, Graduate School of Biomedical Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8551, Japan
| | - Yuji Yasunaga
- Department of Orthopaedic Surgery, Hiroshima Prefectural Rehabilitation Center, 295-3 Taguchi, Saijo-town, Higashi-hiroshima 739-0036, Japan
| | - Nobuo Adachi
- Department of Orthopaedic Surgery, Graduate School of Biomedical Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8551, Japan
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Zhang K, Hast MW, Izumi S, Usami Y, Shetye S, Akabudike N, Philp NJ, Iwamoto M, Nissim I, Soslowsky LJ, Enomoto-Iwamoto M. Modulating Glucose Metabolism and Lactate Synthesis in Injured Mouse Tendons: Treatment With Dichloroacetate, a Lactate Synthesis Inhibitor, Improves Tendon Healing. Am J Sports Med 2018; 46:2222-2231. [PMID: 29927623 PMCID: PMC6510478 DOI: 10.1177/0363546518778789] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Tendon injuries are common problems among athletes. Complete recovery of the mechanical structure and function of ruptured tendons is challenging. It has been demonstrated that upregulation of glycolysis and lactate production occurs in wounds, inflammation sites, and cancerous tumors, and these metabolic changes also control growth and differentiation of stem and progenitor cells. Similar metabolic changes have been reported in human healing tendons. In addition, lactate production has increased in progenitors isolated from injured tendons after treatment with IL-1β. It is thought that the metabolic changes play a role in tendon healing after injury. HYPOTHESIS Glucose metabolism is altered during tendon injury and healing, and modulation of this altered metabolism improves tendon repair. STUDY DESIGN Controlled laboratory study. METHODS The authors used the tendon injury model involving a complete incision of the Achilles tendon in C57BL/6J female mice and studied alterations of glucose metabolism in injured tendons with [U-13C]glucose and metabolomics analysis 1 and 4 weeks after surgery. They also examined the effects of dichloroacetate (DCA; an indirect lactate synthesis inhibitor) treatment on the recovery of structure and mechanical properties of injured tendons 4 weeks after surgery in the same mouse model. RESULTS Significant changes in glucose metabolism in tendons after injury surgery were detected. 13C enrichment of metabolites and intermediates, flux through glycolysis, and lactate synthesis, as well as tricarboxylic acid cycle activity, were acutely increased 1 week after injury. Increased glycolysis and lactate generation were also found 4 weeks after injury. DCA-treated injured tendons showed decreased cross-sectional area and higher values of modulus, maximum stress, and maximum force when compared with vehicle-treated injured tendons. Improved alignment of the collagen fibers was also observed in the DCA group. Furthermore, DCA treatment reduced mucoid accumulation and ectopic calcification in injured tendons. CONCLUSION The findings indicate that injured tendons acutely increase glycolysis and lactate synthesis after injury and that the inhibition of lactate synthesis by DCA is beneficial for tendon healing. CLINICAL RELEVANCE Changing metabolism in injured tendons may be a therapeutic target for tendon repair.
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Affiliation(s)
- Kairui Zhang
- Department of Orthopaedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
- Division of Orthopaedic Surgery, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Michael W Hast
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Soutarou Izumi
- Department of Orthopaedics, University of Maryland, Baltimore, Maryland, USA
| | - Yu Usami
- Division of Orthopaedic Surgery, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Department of Oral Pathology, Osaka University, Osaka, Japan
| | - Snehal Shetye
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Ngozi Akabudike
- Department of Orthopaedics, University of Maryland, Baltimore, Maryland, USA
| | - Nancy J Philp
- Department of Pathology, Anatomy, and Cell Biology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Masahiro Iwamoto
- Division of Orthopaedic Surgery, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Department of Orthopaedics, University of Maryland, Baltimore, Maryland, USA
| | - Itzhak Nissim
- Division of Metabolism and Genetics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Louis J Soslowsky
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Motomi Enomoto-Iwamoto
- Division of Orthopaedic Surgery, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Department of Orthopaedics, University of Maryland, Baltimore, Maryland, USA
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Kinoshita M, Takechi K, Nagao Y, Izumi S, Arai Y, Shirono R, Iwamoto S, Takao S, Noda S, Ueno J, Harada M. Abstract No. 694 The impact of virtual liver parenchymal perfusion using existing 3-dimensional workstation and simulation software in conventional transcatheter arterial chemoembolization for hepatocellular carcinoma. J Vasc Interv Radiol 2018. [DOI: 10.1016/j.jvir.2018.01.739] [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: 10/17/2022] Open
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Takamori A, Yoshinaga Y, Ukai T, Nakamura H, Takamori Y, Izumi S, Shiraishi C, Hara Y. Topical application of glycyrrhetinic acid in the gingival sulcus inhibits attachment loss in lipopolysaccharide-induced experimental periodontitis in rats. J Periodontal Res 2018; 53:422-429. [PMID: 29446076 DOI: 10.1111/jre.12529] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/08/2017] [Indexed: 01/03/2023]
Abstract
BACKGROUND AND OBJECTIVE Attachment loss of the junctional epithelium and alveolar bone destruction are signs of periodontitis, which is mainly caused by an inflammatory response to dental plaque. Glycyrrhetinic acid (GA), a component of the licorice herb, has been shown to have important anti-inflammatory activities; however, there are no previous reports on the ability of its inhibitory effects to prevent periodontal diseases. Hence, in this study, using our experimental periodontitis model, we attempted to evaluate whether GA had an effect on the prevention of attachment loss and alveolar bone loss. MATERIAL AND METHODS Rats were intraperitoneally immunized with Escherichia coli lipopolysaccharide (LPS). The LPS group (n = 5) received 3 topical applications of 50 μg/μL of LPS followed by one application of the vehicle (propylene glycol:ethyl alcohol:phosphate-buffered saline [PBS] = 8:1:1) into the gingival sulcus. This protocol was repeated twice per day for 10 days. The low (n = 5) and high (n = 5) groups received topical application of LPS and 0.03% or 0.3% GA, respectively. The control group received topical application of PBS and vehicle. The rats were killed on the 10th day. Attachment loss, alveolar bone level and inflammatory cell infiltration were investigated histometrically. The formation of immune complexes and infiltration of LPS were evaluated immunohistologically. RESULTS Attachment loss, formation of immune complexes and infiltration of inflammatory cells were increased in the LPS group compared with the control group, and were completely inhibited in the low and high groups compared with the LPS group. The LPS group showed greater alveolar bone destruction compared with the control group and GA-treated groups. In addition, invasion of LPS was detected in the LPS group, was absent in the control group and was weaker in the GA-treated groups than in the LPS group. CONCLUSION In the present study, we showed that GA inhibits periodontal destruction in the rat experimental periodontitis model.
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Affiliation(s)
- A Takamori
- Department of Periodontology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Y Yoshinaga
- Section of Periodontology, Department of Odontology, Fukuoka Dental College, Fukuoka, Japan
| | - T Ukai
- Department of Periodontology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - H Nakamura
- Department of Periodontology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Y Takamori
- Department of Periodontology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - S Izumi
- Department of Periodontology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - C Shiraishi
- Department of Periodontology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Y Hara
- Department of Periodontology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
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Toma M, Izumi S, Tawa K. Rapid and sensitive detection of neuron specific enolase with a polydopamine coated plasmonic chip utilizing a rear-side coupling method. Analyst 2018; 143:858-864. [DOI: 10.1039/c7an01577a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A rapid and sensitive detection of a cancer marker, neuron specific enolase (NSE), is demonstrated by using a disposable silver plasmonic chip functionalized with a mussel-inspired polydopamine (PDA) coating.
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Affiliation(s)
- M. Toma
- Department of Applied Chemistry for Environment
- School of Science and Technology
- Kwansei Gakuin University
- Sanda
- Japan
| | - S. Izumi
- Department of Chemistry
- Graduate School of Science and Technology
- Kwansei Gakuin University
- Sanda
- Japan
| | - K. Tawa
- Department of Applied Chemistry for Environment
- School of Science and Technology
- Kwansei Gakuin University
- Sanda
- Japan
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13
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Ishii Y, Hashimoto Y, Kono S, Izumi S, Iizuka J, Karasawa K. High Dose Rate Brachytherapy With Hypofractionated External Beam Radiation Therapy for High-Risk Prostate Cancer. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1180] [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: 10/18/2022]
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Shoji T, Yamasaki T, Izumi S, Murakami H, Mifuji K, Sawa M, Yasunaga Y, Adachi N, Ochi M. Factors affecting the potential for posterior bony impingement after total hip arthroplasty. Bone Joint J 2017; 99-B:1140-1146. [DOI: 10.1302/0301-620x.99b9.bjj-2016-1078.r2] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Accepted: 05/09/2017] [Indexed: 11/05/2022]
Abstract
Aims Our aim was to evaluate the radiographic characteristics of patients undergoing total hip arthroplasty (THA) for the potential of posterior bony impingement using CT simulations. Patients and Methods Virtual CT data from 112 patients who underwent THA were analysed. There were 40 men and 72 women. Their mean age was 59.1 years (41 to 76). Associations between radiographic characteristics and posterior bony impingement and the range of external rotation of the hip were evaluated. In addition, we investigated the effects of pelvic tilt and the neck/shaft angle and femoral offset on posterior bony impingement. Results The range of external rotation and the ischiofemoral length were significantly lower, while femoral anteversion, the ischial ratio, and ischial angle were significantly higher in patients with posterior bony impingement compared with those who had implant impingement (p < 0.05). The range of external rotation positively correlated with ischiofemoral length (r = 0.49, p < 0.05), and negatively correlated with ischial length (r = -0.49, p < 0.05), ischial ratio (r =- 0.49, p < 0.05) and ischial angle (r = -0.55, p < 0.05). The range of external rotation was lower in patients with posterior pelvic tilt (p < 0.05) and in those with a high offset femoral component (p < 0.05) due to posterior bony impingement. Conclusion Posterior bony impingement after THA is more likely in patients with a wider ischium and a narrow ischiofemoral space. A high femoral offset and posterior pelvic tilt are also risk factors for this type of impingement. Cite this article: Bone Joint J 2017;99-B:1140–6.
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Affiliation(s)
- T. Shoji
- Graduate School of Biomedical Sciences,
Hiroshima University,
1-2-3 Kasumi, Minami-ku, Hiroshima
734-8551, Japan
| | - T. Yamasaki
- Graduate School of Biomedical Sciences,
Hiroshima University,
1-2-3 Kasumi, Minami-ku, Hiroshima
734-8551, Japan
| | - S. Izumi
- Graduate School of Biomedical Sciences,
Hiroshima University,
1-2-3 Kasumi, Minami-ku, Hiroshima
734-8551, Japan
| | - H. Murakami
- Graduate School of Biomedical Sciences,
Hiroshima University,
1-2-3 Kasumi, Minami-ku, Hiroshima
734-8551, Japan
| | - K. Mifuji
- Graduate School of Biomedical Sciences,
Hiroshima University,
1-2-3 Kasumi, Minami-ku, Hiroshima
734-8551, Japan
| | - M. Sawa
- Graduate School of Biomedical Sciences,
Hiroshima University,
1-2-3 Kasumi, Minami-ku, Hiroshima
734-8551, Japan
| | - Y. Yasunaga
- Hiroshima Prefectural Rehabilitation Center, 295-3
Taguchi, Saijo-town, Higashi-hiroshima, 739-0036, Japan
| | - N. Adachi
- Graduate School of Biomedical Sciences,
Hiroshima University,
1-2-3 Kasumi, Minami-ku, Hiroshima
734-8551, Japan
| | - M. Ochi
- Graduate School of Biomedical Sciences,
Hiroshima University,
1-2-3 Kasumi, Minami-ku, Hiroshima
734-8551, Japan
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Izumi S, Basin B, McCalmont J, Presley M, Baggs J. REGISTERED NURSES PROVIDING PRIMARY PALLIATIVE CARE DURING TRANSITION FROM HOSPITAL TO HOME. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.151] [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
Affiliation(s)
- S. Izumi
- Oregon Health and Science University, Portland, Oregon
| | - B. Basin
- Oregon Health and Science University, Portland, Oregon
| | - J. McCalmont
- Oregon Health and Science University, Portland, Oregon
| | - M. Presley
- Oregon Health and Science University, Portland, Oregon
| | - J.G. Baggs
- Oregon Health and Science University, Portland, Oregon
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Nozaki M, Kagami Y, Shibata T, Nakamura K, Ito Y, Nishimura Y, Kawaguchi Y, Saito Y, Nagata Y, Matsumoto Y, Akimoto T, Nishimura T, Uno T, Tsujino K, Kataoka M, Kodaira T, Shiraishi K, Inoue K, Isohashi F, Hiraoka M, Karasawa K, Izumi S, Sakurai H. EP-1156: A clinical trial on hypofractionated whole breast irradiation after breast-conserving surgery. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)31592-x] [Citation(s) in RCA: 1] [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: 10/19/2022]
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17
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Chino H, Iikura M, Saito N, Sato N, Suzuki M, Ishii S, Morino E, Naka G, Takasaki J, Izumi S, Hojo M, Takeda Y, Sugiyama H. Subinterlobular Pleural Location Is a Risk Factor for Pneumothorax After Bronchoscopy. Respir Care 2016; 61:1664-1670. [DOI: 10.4187/respcare.04874] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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18
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Kono S, Ishii Y, Matsubara H, Izumi S, Hashimoto Y, Karasawa K. Is Involved-Field Irradiation Sufficient for Superficial Esophageal Carcinoma? Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.998] [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: 10/20/2022]
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Shoji T, Yasunaga Y, Yamasaki T, Izumi S, Adachi N, Ochi M. Anterior Inferior Iliac Spine Bone Morphology in Hip Dysplasia and Its Effect on Hip Range of Motion in Total Hip Arthroplasty. J Arthroplasty 2016; 31:2058-63. [PMID: 27012430 DOI: 10.1016/j.arth.2016.02.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 02/09/2016] [Accepted: 02/09/2016] [Indexed: 02/01/2023] Open
Abstract
BACKGOUND Despite the fact that femoral impingement against the anterior inferior iliac spine (AIIS) is increasingly recognized, there is no description of morphologic features of the AIIS in hip dysplasia and their effect on hip range of motion (ROM) in total hip arthroplasty (THA). The purpose is to evaluate the bone morphology of the AIIS in hip dysplasia and whether its morphology affects hip ROM in THA. METHODS Computed tomography-based simulation software was used to create 3-dimensional bone models and perform virtual simulations. Using the computed tomographic data of 85 patients (male: n = 25, female: n = 60, mean age: 60.9) with hip osteoarthritis due to dysplasia, we measured the straight, vertical, and horizontal distances between the anteroinferior edge of the AIIS and the center of rotation in sagittal and axial views. The anterior and lateral versions of the AIIS were also measured. We calculated the ROM of flexion (Flex), and internal rotation (Int-R) in THA in the software, and analyzed the correlations among them. RESULTS The AIIS prominence is bigger and extends more anteriorly and laterally in males than in females. Furthermore, the taller the patient, the more the AIIS extends anteriorly and laterally. We found that Flex and Int-R decreased inversely proportional to the size and lateral version of the AIIS. CONCLUSION Our results demonstrated that the AIIS bone morphology substantially affects the ROM of Flex and Int-R especially in patients with laterally large AIIS bony anatomy in THA. Furthermore, our result indicates that the morphologic features of AIIS in hip dysplasia may be different between males and females.
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Affiliation(s)
- Takeshi Shoji
- Department of Orthopaedic Surgery, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - Yuji Yasunaga
- Department of Orthopaedic Surgery, Hiroshima Prefectural Rehabilitation Center, Higashihiroshima, Japan
| | - Takuma Yamasaki
- Department of Orthopaedic Surgery, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - Soutarou Izumi
- Department of Orthopaedic Surgery, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - Nobuo Adachi
- Department of Orthopaedic Surgery, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - Mitsuo Ochi
- Department of Orthopaedic Surgery, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
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Tsuchiya Y, Shida N, Izumi S, Ogasawara M, Kakinuma W, Tsujiuchi T, Machida K. Factors associated with mothers not vaccinating their children against mumps in Japan. Public Health 2016; 137:95-105. [PMID: 27062068 DOI: 10.1016/j.puhe.2016.03.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Revised: 11/05/2015] [Accepted: 03/02/2016] [Indexed: 10/22/2022]
Abstract
OBJECTIVES In Japan, mumps immunization is not mandatory, and the prevalence of mumps immunization among eligible children is only about 30%, raising concerns about increased risk of meningitis, encephalitis and deafness caused by mumps. In 2011, to understand why families are not voluntarily immunizing their children against mumps, we surveyed mothers who were university graduates to examine the factors and barriers influencing mumps vaccination in Japan. STUDY DESIGN A cross sectional design. METHODS We sent questionnaires including questions on demographic data and vaccination status, barriers and factors for immunizations to university alumnae to recruit participants. Data were analysed by Student's t-test for continuous variables and by univariate and multivariate analysis to obtain the odds ratio and adjusted odds ratio. RESULTS Two hundred and twenty-six mothers with children responded with an average (range) age of 44.7 years (SD = 5.02; 30-55 years). Adjusted odds ratios (aOR) from logistic regression analysis identified fear of harmful side-effects (aOR, 2.55; 95% CI, 1.10 to 5.89), the vaccination not being mandatory (aOR, 3.30; 95% CI, 1.41 to 7.72), perceived non-efficacy (aOR, 6.21; 95% CI, 1.85 to 20.91) and being busy (aOR, 3.30; 95% CI, 1.21 to 9.01) were significantly and inversely associated with mumps vaccination. Recommendations from family doctors (aOR, 0.35; 95% CI, 0.17 to 0.71), living abroad when their children would be vaccinated (aOR, 0.10; 95% CI, 0.02 to 0.68) and the maternal age (aOR, 0.91; 95% CI, 0.85 to 0.96) were significant and positively associated with vaccination. CONCLUSIONS In the absence of mandatory vaccinations, a public education campaign about mumps, their potential consequences and the nature and value of vaccination could improve the prevalence of mumps vaccination among children and prevent the consequences of this disease.
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Affiliation(s)
- Y Tsuchiya
- Advanced Research Center for Human Science, Waseda University, 2-579-15, Mikajima, Tokorozawa, Saitama, Japan.
| | - N Shida
- Advanced Research Center for Human Science, Waseda University, 2-579-15, Mikajima, Tokorozawa, Saitama, Japan
| | - S Izumi
- Faculty of Home Economics, Koriyama Women's University, 3-25-2, Kaisei, Koriyama, Fukushima, Japan
| | - M Ogasawara
- Department of Human Science, Waseda University, 2-579-15, Mikajima, Tokorozawa, Saitama, Japan
| | - W Kakinuma
- Advanced Research Center for Human Science, Waseda University, 2-579-15, Mikajima, Tokorozawa, Saitama, Japan
| | - T Tsujiuchi
- Faculty of Human Science, Waseda University, 2-579-15, Mikajima, Tokorozawa, Saitama, Japan
| | - K Machida
- Faculty of Human Science, Waseda University, 2-579-15, Mikajima, Tokorozawa, Saitama, Japan
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Hashimoto Y, Akimoto T, Ishii Y, Kono S, Izumi S, Maebayashi K, Iizuka J, Tanabe K, Kiyozuka M, Mitsuhashi N, Karasawa K. EP-1646: HDR brachytherapy with hypofractionated EBRT for high risk prostate cancerSPAN STYLE="font-style:italic">. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)32897-3] [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: 10/21/2022]
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Shoji T, Yamasaki T, Izumi S, Hachisuka S, Ochi M. The influence of stem offset and neck shaft angles on the range of motion in total hip arthroplasty. Int Orthop 2015. [PMID: 26224610 DOI: 10.1007/s00264-015-2826-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
PURPOSE To evaluate the influence of stem offset and neck shaft angles on the range of motion before component impingement (ROMCI) and bony impingement (ROMBI), and the types of impingement in total hip arthroplasty (THA). METHODS Using the computed tomography data of 101 patients who underwent THA, three-dimensional dynamic motion analysis was performed using a modular implant (Kinectiv(®) stem) that enabled adjustment of offset and leg length independently. We defined offset as horizontal offset (HO) and leg length as vertical offset (VO), and measured the ROMCI and ROMBI in flexion (Flex), internal rotation (Int-R) and external rotation (Ext-R) with the configuration of each horizontal/vertical offset. RESULTS We found that HO lengthening increased the ROMCI and ROMBI in Flex and Int-R by delaying bony impingement, although excessive lengthening had minimal effect. On the contrary, VO lengthening decreased the ROMCI and ROMBI in Flex and ROMCI in Int-R. As for Ext-R, VO lengthening had positive effects on the ROMCI and ROMBI, whereas lengthening of HO had negative effects on the ROMCI and ROMBI. CONCLUSIONS We demonstrated that the appropriate long offset with a low shaft angle increased the ROM in Flex and Int-R, and a high neck shaft angle increased the ROM in Ext-R. We should use implants properly in accordance with the types of impingement for avoiding dislocations in THA.
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Affiliation(s)
- Takeshi Shoji
- Department of Orthopaedic Surgery, Graduate School of Biomedical Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan.
| | - Takuma Yamasaki
- Department of Orthopaedic Surgery, Graduate School of Biomedical Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Soutarou Izumi
- Department of Orthopaedic Surgery, Graduate School of Biomedical Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Susumu Hachisuka
- Department of Orthopaedic Surgery, Graduate School of Biomedical Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Mitsuo Ochi
- Department of Orthopaedic Surgery, Graduate School of Biomedical Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
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Shoji T, Yasunaga Y, Yamasaki T, Izumi S, Hachisuka S, Ochi M. Low femoral antetorsion as a risk factor for bony impingement after bipolar hemiarthroplasty. J Orthop Surg Res 2015; 10:105. [PMID: 26149008 PMCID: PMC4501289 DOI: 10.1186/s13018-015-0248-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Accepted: 05/02/2015] [Indexed: 11/16/2022] Open
Abstract
Introduction Reports of dislocation after bipolar hemiarthroplasty (BHA) abound in literature, and several studies have mentioned the factors that are associated with an increased risk of dislocation. However, there is no report detailing the pattern of impingement in BHA and how femoral antetorsion can affect the range of motion (ROM) after BHA. Purpose The purpose of this study was to evaluate the pattern of impingement in BHA and whether femoral antetorsion affects the ROM after BHA using three-dimensional (3D) dynamic motion analysis. Methods Using the computed tomography (CT) data of 60 patients (60 hips), including 31 men and 29 women who underwent BHA for the treatment of idiopathic osteonecrosis (ION) of the femoral head, we calculated the antetorsion of the femoral neck, ROM of flexion (Flex), internal rotation (Int-R), and external rotation (Ext-R) using a CT-based 3D simulation software. We evaluated the pattern of impingement and the relationship between femoral antetorsion and ROM in BHA. As for the implant position in the 3D simulation software, the anteversion of the femoral implant was set to be the same as the natural antetorsion of the femoral neck and neck length was set to be the standard neck in all cases. Results This study revealed the mechanism of impingement in BHA: (1) bone to bone impingement and (2) implant to bone impingement. We found a significant decrease in the ROM of Flex and Int-R inversely proportional to the femoral antetorsion. In patients with lower femoral antetorsion, the ROM of Flex and Int-R decreased due to bony impingement (the anterior great trochanteric region of the femur impinges on the anteroinferior edge of the anteroinferior iliac spine). Whereas, high anteversion of the femoral implant may decrease the ROM of Ext-R; however, our results also showed that even the lowest ROM of Ext-R with 10° hip extension was over 40°. Conclusions We demonstrated that lower femoral antetorsion substantially affects the ROM of Flex and Int-R due to bony impingement. For these patients, there should be consideration given to retaining femoral “anterior offset” in BHA.
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Affiliation(s)
- Takeshi Shoji
- Department of Orthopaedic Surgery, Graduate School of Biomedical Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan.
| | - Yuji Yasunaga
- Department of Orthopaedic Surgery, Hiroshima Prefectural Rehabilitation Center, 295-3, Taguchi, Saijou-town, East Hiroshima, Hiroshima Prefecture, Japan.
| | - Takuma Yamasaki
- Department of Orthopaedic Surgery, Graduate School of Biomedical Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan.
| | - Soutarou Izumi
- Department of Orthopaedic Surgery, Graduate School of Biomedical Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan.
| | - Susumu Hachisuka
- Department of Orthopaedic Surgery, Graduate School of Biomedical Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan.
| | - Mitsuo Ochi
- Department of Orthopaedic Surgery, Graduate School of Biomedical Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan.
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Ishijima T, Muraki T, Sekiguchi Y, Ishikawa H, Morise S, Goto H, Izumi S. The characteristics of trunk posture and activities of scapular muscles in patients with partial-thickness rotator cuff tear. Physiotherapy 2015. [DOI: 10.1016/j.physio.2015.03.3484] [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: 11/27/2022]
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Ishikawa H, Muraki T, Sekiguchi Y, Ishijima T, Morise S, Yamamoto N, Itoi E, Izumi S. Differences in scapular upward rotation and activities of downward rotators during arm elevation between symptomatic and asymptomatic rotator cuff tears. Physiotherapy 2015. [DOI: 10.1016/j.physio.2015.03.3485] [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: 10/23/2022]
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Hashimoto Y, Akimoto T, Motegi A, Yuka I, Sawa K, Nakamura K, Izumi S, Maebayashi K, Iizuka J, Tanabe K, Kiyozuka M, Mitsuhashi N. Hypofractionated Image-Guided IMRT for Clinically Localized Prostate Cancer: A Total Dose of 66Gy Delivered to 3 Gy per Fraction Three Times per Week. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.1288] [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: 10/24/2022]
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Shoji T, Yasunaga Y, Yamasaki T, Izumi S, Hachisuka S, Ochi M. Low femoral antetorsion and total hip arthroplasty: a risk factor. International Orthopaedics (SICOT) 2014; 39:7-12. [DOI: 10.1007/s00264-014-2452-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Accepted: 06/25/2014] [Indexed: 10/24/2022]
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Hirano S, Takeda Y, Naka G, Iikura M, Udagawa H, Izumi S, Sugiyama H, Kobayashi N. Docetaxel Monotherapy Compared with Carboplatin and Paclitaxel Doublet Chemotherapy in Elderly Patients with Non-Small-Cell Lung Cancer. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)32450-9] [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: 11/15/2022] Open
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Izumi S, Saito A, Kanemoto S, Kawasaki N, Asada R, Iwamoto H, Oki M, Miyagi H, Ochi M, Imaizumi K. The endoplasmic reticulum stress transducer BBF2H7 suppresses apoptosis by activating the ATF5-MCL1 pathway in growth plate cartilage. J Biol Chem 2012; 287:36190-200. [PMID: 22936798 DOI: 10.1074/jbc.m112.373746] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
BBF2H7 (box B-binding factor 2 human homolog on chromosome 7) is a basic leucine zipper transmembrane transcription factor that belongs to the cyclic AMP-responsive element-binding protein (CREB)/activating transcription factor (ATF) family. This novel endoplasmic reticulum (ER) stress transducer is localized in the ER and is cleaved in its transmembrane region in response to ER stress. BBF2H7 has been shown to be expressed in proliferating chondrocytes in cartilage during the development of long bones. The target of BBF2H7 is Sec23a, one of the coat protein complex II components. Bbf2h7-deficient (Bbf2h7(-/-)) mice exhibit severe chondrodysplasia, with expansion of the rough ER in proliferating chondrocytes caused by impaired secretion of extracellular matrix (ECM) proteins. We observed a decrease in the number of proliferating chondrocytes in the cartilage of Bbf2h7(-/-) mice. TUNEL staining of the cartilage showed that apoptosis was promoted in Bbf2h7(-/-) chondrocytes. Atf5 (activating transcription factor 5), another member of the CREB/ATF family and an antiapoptotic factor, was also found to be a target of BBF2H7 in chondrocytes. ATF5 activated the transcription of Mcl1 (myeloid cell leukemia sequence 1), which belongs to the antiapoptotic B-cell leukemia/lymphoma 2 family, to suppress apoptosis. Finally, we found that the BBF2H7-ATF5-MCL1 pathway specifically suppressed ER stress-induced apoptosis in chondrocytes. Taken together, our findings indicate that BBF2H7 is activated in response to ER stress caused by synthesis of abundant ECM proteins and plays crucial roles as a bifunctional regulator to accelerate ECM protein secretion and suppress ER stress-induced apoptosis by activating the ATF5-MCL1 pathway during chondrogenesis.
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Affiliation(s)
- Soutarou Izumi
- Department of Biochemistry, Institute of Biomedical and Health Sciences, University of Hiroshima, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan and
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Hashimoto Y, Maebayashi K, Izumi S, Motegi A, Mitsuhashi N. Dropped Head Syndrome Induced by Chemoradiotherapy for Nasopharyngeal Carcinoma: A Case Report. Jpn J Clin Oncol 2012; 42:1091-3. [DOI: 10.1093/jjco/hys135] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Asada R, Saito A, Kawasaki N, Kanemoto S, Iwamoto H, Oki M, Miyagi H, Izumi S, Imaizumi K. The endoplasmic reticulum stress transducer OASIS is involved in the terminal differentiation of goblet cells in the large intestine. J Biol Chem 2012; 287:8144-53. [PMID: 22262831 DOI: 10.1074/jbc.m111.332593] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
OASIS is a basic leucine zipper transmembrane transcription factor localized in the endoplasmic reticulum (ER) that is cleaved in its transmembrane region in response to ER stress. This novel ER stress transducer has been demonstrated to express in osteoblasts and astrocytes and promote terminal maturation of these cells. Additionally, OASIS is highly expressed in goblet cells of the large intestine. In this study, we investigated the roles of OASIS in goblet cell differentiation in the large intestine. To analyze the functions of OASIS in goblet cells, we examined morphological changes and the expression of goblet cell differentiation markers in the large intestine of Oasis(-/-) mice. By disrupting the Oasis gene, the number of goblet cells and production of mucus were decreased in the large intestine. Oasis(-/-) goblet cells showed abnormal morphology of mucous vesicles and rough ER. The expression levels of mature goblet cell markers were lower, and conversely those of early goblet cell markers were higher in Oasis(-/-) mice, indicating that differentiation from early to mature goblet cells is impaired in Oasis(-/-) mice. To determine the association of OASIS with other factors involved in goblet cell differentiation, in vitro experiments using a cell culture model were performed. We found that OASIS was activated in response to mild ER stress that is induced in differentiating goblet cells. Knockdown of the Oasis transcript perturbed goblet cell terminal differentiation. Together, our data indicate that OASIS plays crucial roles in promoting the differentiation of early goblet cells to mature goblet cells in the large intestine.
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Affiliation(s)
- Rie Asada
- Department of Biochemistry, Graduate School of Biomedical Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8551, Japan
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Manabe T, Higera-Iglesias AL, Takasaki J, Izumi S, Vazquez-Manriquez ME, Kudo K. Socioeconomic impact relating to clinical condition on Pandemic (H1N1) Influenza. BMC Proc 2011. [DOI: 10.1186/1753-6561-5-s1-p106] [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: 11/10/2022] Open
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Kawamata H, Izumi S, Doi Y, Imai Y. Oral squamous cell carcinomas originating from minor salivary glands showed aggressive biological behavior and poor prognosis when compared to those from squamous epithelium. Int J Oral Maxillofac Surg 2011. [DOI: 10.1016/j.ijom.2011.07.478] [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: 11/25/2022]
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Manabe T, Higera-Iglesias AL, Takasaki J, Izumi S, Vazquez-Manriquez ME, Kudo K. Socioeconomic impact relating to clinical condition on Pandemic (H1N1) Influenza. BMC Proc 2011. [PMCID: PMC3019421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- T Manabe
- Disease Control and Prevention Center, National Center for Global Health and Medicine, Shinjuku-ku, Tokyo, 162-8655 Japan
| | - AL Higera-Iglesias
- Research Center for Clinical Epidemiology, National Institute of Respiratory Diseases, Mexico D.F., Mexico
| | - J Takasaki
- Disease Control and Prevention Center, National Center for Global Health and Medicine, Shinjuku-ku, Tokyo, 162-8655 Japan
| | - S Izumi
- Disease Control and Prevention Center, National Center for Global Health and Medicine, Shinjuku-ku, Tokyo, 162-8655 Japan
| | - ME Vazquez-Manriquez
- Department of Pathology, National Institute of Respiratory Diseases, Mexico D.F., Mexico
| | - K Kudo
- Disease Control and Prevention Center, National Center for Global Health and Medicine, Shinjuku-ku, Tokyo, 162-8655 Japan
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Cai LY, Izumi S, Suzuki T, Goya K, Nakamura E, Sugiyama T, Kobayashi H. Dioxins in ascites and serum of women with endometriosis: a pilot study. Hum Reprod 2010; 26:117-26. [PMID: 21106495 DOI: 10.1093/humrep/deq312] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Animal studies and laboratory experiments have demonstrated that exposure to dioxins may be involved in the pathophysiology of endometriosis. However, recent epidemiological investigations have shown conflicting results. Although peritoneal fluid is a specific microenvironment playing a pivotal role in the development of endometriosis, to our knowledge, there is no published study evaluating the concentrations of dioxins in serum and peritoneal fluid simultaneously. The present study explores the possible correlation between the local peritoneal fluid levels of dioxins and concurrent endometriosis. METHODS There were 17 infertile women enrolled in the present study. After the diagnostic laparoscopic examination, the women were divided into two groups: endometriosis (n = 10) and controls (n = 7). We measured 29 dioxins simultaneously in serum and peritoneal fluid samples: 7 polychlorinated dibenzo-p-dioxins (PCDDs), 10 polychlorinated dibenzofurans (PCDFs), and 12 polychlorinated biphenyls (dioxin-like PCBs). A dioxin toxic equivalency (TEQ) system was utilized to calculate the dioxin concentration in each sample. RESULTS Serum concentrations of itemized components of 29 dioxins were similar in the endometriosis patients compared with the controls. Higher concentrations of PCDFs and dioxin-like PCBs were observed in peritoneal fluid than in serum, whereas the reverse was shown for PCDDs. Statistical analysis showed that higher levels of dioxin TEQ (PCDDs and PCDFs) in peritoneal fluid were significantly associated with an increased risk of endometriosis (OR: 2.5; 95% CI: 1.17-5.34; P = 0.035). CONCLUSIONS This is the first report suggesting that higher concentrations of dioxins (PCDDs and PCDFs) in peritoneal fluid are linked to endometriosis. More detail and epidemiological research is warranted to further explore this link.
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Affiliation(s)
- L Y Cai
- Department of Obstetrics and Gynecology, Tokai University School of Medicine, Isehara, Kanagawa, Japan
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Motegi A, Akimoto T, Kiyozuka M, Izumi S, Hashimoto Y, Nakamura K, Maebayashi K, Iizuka J, Tanabe K, Mitsuhashi N. Correlation between the Changes in the Epic QOL Score and the Severity of Acute Genitourinary Toxicity after Permanent Brachytherapy with I-125 Alone for Prostate Cancer. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.922] [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: 11/28/2022]
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Oouchida Y, Mori T, Suzuki E, Izumi S. P11-1 Inhibitory 1Hz TMS to supplementary motor area reduced action tremor. Clin Neurophysiol 2010. [DOI: 10.1016/s1388-2457(10)60678-5] [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: 10/18/2022]
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Matsuzaka Y, Kikuti YY, Izumi S, Suzuki T, Cai LY, Goya K, Inoko H, Makino T, Kulski JK, Kimura M. Mapping of susceptibility locus for endometriosis within the HLA region using microsatellite markers in Japanese women. ACTA ACUST UNITED AC 2010; 75:65-7. [PMID: 20196820 DOI: 10.1111/j.1399-0039.2009.01391.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Endometriosis is a female disorder characterized by the presence of uterine endometrial tissue in ectopic loci. Previous studies reported a higher prevalence of particular human leukocyte antigen (HLA) in endometriosis. In order to confirm the association between endometriosis and the HLA region, 15 polymorphic microsatellite markers distributed in the HLA class II to class III region were subjected to association analysis by polymerase chain reaction (PCR)-based DNA typing of 89 patients and 136 healthy controls. Statistical analysis of the allelic frequency at each microsatellite locus showed that there were no statistically significant differences in the allele frequency distributions between the cases and controls. This finding suggests that the etiology of endometriosis does not involve the HLA class II genomic region and a portion of class III genomic region in the Japanese population.
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Affiliation(s)
- Y Matsuzaka
- Department of Molecular Life Science, Tokai University School of Medicine, Bohseidai, Isehara, Kanagawa, Japan
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Akutsu K, Takatori S, Nakazawa H, Hayakawa K, Izumi S, Makino T. Dietary intake estimations of polybrominated diphenyl ethers (PBDEs) based on a total diet study in Osaka, Japan. Food Additives and Contaminants: Part B 2008; 1:58-68. [DOI: 10.1080/19393210802236901] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Matsunaga C, Izumi S, Furukubo T, Satoh M, Yamakawa T, Uchida T, Kadowaki D, Hirata S. Effect of famotidine and lansoprazole on serum phosphorus levels in hemodialysis patients on calcium carbonate therapy. Clin Nephrol 2008; 68:93-8. [PMID: 17722708 DOI: 10.5414/cnp68093] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [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: 11/18/2022] Open
Abstract
AIMS Histamine H2 receptor antagonists (HRA) or proton pump inhibitors (PPI) are frequently administered to patients on hemodialysis, because their intestinal mucosa is fragile. Although three studies have indicated that concomitant HRA administration causes a decrease in the binding of phosphate by calcium carbonate, the HRA doses tested in these studies were 2-4 times higher than the recommended dose for hemodialysis patients. In addition, it remains unclear whether PPI therapy affects serum phosphate levels in hemodialysis patients taking calcium carbonate. Accordingly, the aim of this study was to evaluate the influence of lansoprazole and the recommended dose of famotidine on serum phosphate and calcium levels in hemodialysis patients. METHODS The study included 115 hemodialysis patients who were taking calcium carbonate and who were also treated with either famotidine (10 mg/day) or lansoprazole (30 mg/day). Changes of the mean serum phosphate and calcium levels over 2 months before and after the start of famotidine or lansoprazole therapy were compared. The same parameters were also compared when famotidine was switched to lansoprazole. RESULTS The mean serum phosphate level increased significantly after administration of either famotidine or lansoprazole (by 6.6 +/- 21.9% or 13.0 +/- 26.3%, p = 0.032 and p = 0.029, respectively). The mean serum calcium level was unchanged after administration of famotidine, but showed a significant decrease after administration of lansoprazole (by 3.44 +/- 7.73%, p = 0.013). Therefore, the calcium x phosphorus product was significantly increased by administration of famotidine, but not by administration of lansoprazole (6.68 +/- 23.37% and 8.73 +/- 27.41%, p = 0.046 and p = 0.251, respectively). When famotidine was switched to lansoprazole, the serum phosophate level did not change, but serum calcium decreased significantly by 3.8 +/- 13.0% (p = 0.0006). CONCLUSION Not only administration of 20 mg/ day of famotidine as previously reported, but also 10 mg/day of this drug (the recommended dose for hemodialysis patients) caused a significant increase of serum phosphate in patients taking calcium carbonate. PPIs have been reported to show no effect on the serum phosphate level, but 30 mg/day of lansoprazole also caused a significant increase of serum phosphate in patients taking calcium carbonate.
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Affiliation(s)
- C Matsunaga
- Department of Pharmacy Services, Shirasagi Hospital, Osaka, Japan
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Izumi S, Yamamoto M, Suzuki K, Shimizu A, Aranishi F. Identification and detection of Pseudomonas plecoglossicida isolates with PCR primers targeting the gyrB region. J Fish Dis 2007; 30:391-7. [PMID: 17584436 DOI: 10.1111/j.1365-2761.2007.00820.x] [Citation(s) in RCA: 8] [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] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Pseudomonas plecoglossicida is the agent of bacterial haemorrhagic ascites (BHA) in freshwater fish farming in Japan. To develop a rapid identification and detection method for P. plecoglossicida, a PCR amplification technique targeting the chromosomal DNA region coding the B subunit of the DNA gyrase (gyrB) was used. The nucleotide sequences of gyrB were determined in nine isolates of P. plecoglossicida and two other Pseudomonas species. On the basis of these determined sequences and the gyrB sequences of other Pseudomonas species or fish pathogenic bacteria deposited in international nucleotide sequence databases (GenBank/EMBL/DDBJ), PCR primers PL-G1F, PL-G1R, PL-G2F and PL-G2R were designed for specific amplification of the partial gyrB of P. plecoglossicida. The specificity of these primers in amplifying the gyrB of P. plecoglossicida was verified using selected strains of related bacterial species. The nested PCR technique was used to detect P. plecoglossicida from kidney and intestine of ayu. Primer pair PL-G1F and PL-G1R was used for the external PCR, and primer pair PL-G2F and PL-G2R for the internal PCR. Of 10 ayu juveniles, expected size PCR products were observed from intestine and kidney samples in one and two specimens, respectively. The PCR technique with primers based on the gyrB sequence is thus useful for the diagnosis of BHA.
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Affiliation(s)
- S Izumi
- Stock Assessment Division, National Institute of Fisheries Science, Yokohama, Japan.
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Arai H, Morita Y, Izumi S, Katagiri T, Kimura H. Molecular typing by pulsed-field gel electrophoresis of Flavobacterium psychrophilum isolates derived from Japanese fish. J Fish Dis 2007; 30:345-55. [PMID: 17498178 DOI: 10.1111/j.1365-2761.2007.00809.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Sixty-four isolates of Flavobacterium psychrophilum from ayu, Plecoglossus altivelis altivelis (Temminck & Schlegel), and other fish (n=16) in Japan and the type strain (NCIMB 1947(T)) were typed using pulsed-field gel electrophoresis (PFGE) with endonuclease BlnI and XhoI. These isolates were classified into 20 clusters and 42 genotypes by PFGE analysis. The most predominant cluster of isolates from ayu was cluster XII (n=20), followed by clusters XVII, XVI, XX, XI, IX, X, XIII and XV; the remaining 17 isolates from other fish were divided into clusters I, II, III, IV, V, VI, VII, VIII, XIV, XVIII and XIX. The PFGE genotype of isolates from ayu clearly differed from those of other fish. The isolates from ayu in Gunma Prefecture belonged to clusters XII, XVI, XVII and XX, and the strains of three of these clusters (XII, XVII and XX) were isolated from ayu in 15 of 19 prefectures. PFGE typing enabled more accurate classification of isolates into clusters than previously achieved by analysing the restriction fragment length polymorphism of PCR products. These results suggest that F. psychrophilum isolated from ayu and other fish are genetically different and strains with several PFGE types have spread within Japan.
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Affiliation(s)
- H Arai
- Gunma Prefectural Fisheries Experiment Station, Maebashi, Gunma, Japan
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Izumi S, Ouchi S, Kuge T, Arai H, Mito T, Fujii H, Aranishi F, Shimizu A. PCR-RFLP genotypes associated with quinolone resistance in isolates of Flavobacterium psychrophilum. J Fish Dis 2007; 30:141-7. [PMID: 17352789 DOI: 10.1111/j.1365-2761.2007.00797.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
A novel genotyping method for epizootiological studies of bacterial cold-water disease caused by Flavobacterium psychrophilum and associated with quinolone resistance was developed. Polymerase chain reaction followed by restriction fragment length polymorphism (PCR-RFLP) was performed on 244 F. psychrophilum isolates from various fish species. PCR was performed with primer pair GYRA-FP1F and GYRA-FP1R amplifying the A subunit of the DNA gyrase (GyrA) gene, which contained the quinolone resistance determining region. Digestion of PCR products with the restriction enzyme Mph1103I showed two genotypes, QR and QS. The difference between these genotypes was amino acid substitutions at position 83 of GyrA (Escherichia coli numbering). The genotype QR indicated an alanine residue at this position associated with quinolone resistance in F. psychrophilum isolates. Of the 244 isolates tested in this study, the number of QR genotype isolates was 153 (62.7%). In isolates from ayu (n=177), 146 (82.5%) were genotype QR. With combination of this technique and previously reported PCR-RFLP genotyping, eight genotypes were observed in F. psychrophilum isolates. Using this genotyping system, the relationships between genotype and host fish species, or locality of isolation, were analysed and are discussed.
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Affiliation(s)
- S Izumi
- Stock Assessment Division, National Institute of Fisheries Science, Yokohama, Japan.
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Negoro S, Izumi S, Furukubo T, Satoh M, Matsunaga C, Yamakawa T, Ikegawa S, Nakanishi H, Kadowaki D, Hirata S. Interaction between activated VD3 and Ca channel blockers in patients undergoing hemodialysis. Int J Clin Pharmacol Ther 2007; 45:186-7. [PMID: 17416114 DOI: 10.5414/cpp45186] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Matsubayashi H, Sugi T, Arai T, Shida M, Kondo A, Suzuki T, Izumi S, McIntyre JA. IgG-antiphospholipid antibodies in follicular fluid of IVF-ET patients are related to low fertilization rate of their oocytes. Am J Reprod Immunol 2007. [DOI: 10.1111/j.1600-0897.2007.00477.x] [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: 11/28/2022] Open
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Takeda Y, Tsuduki E, Izumi S, Hojo M, Kamimura M, Naka G, Kobayashi K, Kudo K. A phase I/II trial of irinotecan-cisplatin combined with an anti-late-diarrhoeal programme to evaluate the safety and antitumour response of this combination therapy in patients with advanced non-small-cell lung cancer. Br J Cancer 2006; 93:1341-9. [PMID: 16288302 PMCID: PMC2361534 DOI: 10.1038/sj.bjc.6602866] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
We conducted a phase I/II study in patients with advanced non-small-cell lung cancer (NSCLC) to increase the therapeutic index of the cisplatin–irinotecan combination by institution of an anti-late-diarrhoeal program (ADP). A total of 77 chemotherapy-naive patients with advanced NSCLC were enrolled. The cisplatin dose was fixed at 60 mg m−2 (Day 1). Irinotecan was escalated in 5 mg m−2 increments, starting from 60 mg m−2 (Days 1 and 8). ADP consisted of oral sodium bicarbonate, magnesium oxide, basic water, and ursodeoxycholic acid, and was administered orally for 4 days with each dose of irinotecan. In the phase I portion, irinotecan pharmacokinetics was also examined. After the recommended dose of irinotecan with ADP was determined, a phase II study was conducted to evaluate the response. Maximum tolerated dose was reached at an irinotecan dose of 80 mg m−2 (Grade 4 diarrhoea and neutropenia). Pharmacokinetic studies show that the maximum concentration and the area under the curve of both irinotecan and SN38 (active metabolite of irinotecan) tend to increase in the dose-dependent manner of irinotecan. The phase II portion of the study included 48 patients, who were treated with 75 mg m−2 of irinotecan. Grade 3/4 toxicities included neutropenia in 65%, leucopenia in 33%, and late diarrhoea in 6% of the patients. During this treatment, PS did not change in 65% of patients. At the end of the chemotherapy, PS did not decline in 90% of patients. In the phase II portion, a response occurred in 63% (95% confidential interval (CI), 47–76%) of patients. Median time to progression was 19 weeks (95% CI, 15–22 weeks), and median survival was 52 weeks (95% CI, 39–64 weeks). This regimen of irinotecan and cisplatin with ADP resulted in promising efficacy with acceptable toxicity for patients with advanced NSCLC. This regimen is a candidate for the experimental arm towards future phase III studies.
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Affiliation(s)
- Y Takeda
- Department of Respiratory Medicine, International Medical Center of Japan, Tokyo 162-8655, Japan.
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Izumi S, Fujii H, Aranishi F. Detection and identification of Flavobacterium psychrophilum from gill washings and benthic diatoms by PCR-based sequencing analysis. J Fish Dis 2005; 28:559-64. [PMID: 16266329 DOI: 10.1111/j.1365-2761.2005.00663.x] [Citation(s) in RCA: 6] [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: 05/05/2023]
Abstract
A nested polymerase chain reaction (PCR) amplification technique was used to detect Flavobacterium psychrophilum from washings of fish gill surfaces and benthic diatoms as environmental samples. Gill washing samples were prepared from kawamutsu, Zacco temminckii (Temminck & Schlegel) and oikawa, Z. platypus (Temminck & Schlegel). Benthic diatom samples were collected from stone surfaces. All samples were collected from rivers in Wakayama Prefecture, Japan from November 2003 to January 2004. Following simple DNA extraction using a chelating resin, nested PCR techniques targeting 16S-rDNA and gyrB regions were performed, and PCR products were cloned and sequenced. With nested PCR amplification for the 16S-rDNA gene, ambiguous PCR products were detected from two of six samples, and by cloning and sequencing analysis were found not to be DNA fragments amplified from F. psychrophilum. Using nested PCR for the gyrB gene, however, five of six samples were clearly positive for F. psychrophilum in agarose gel electrophoresis, and were found to be identical with nucleotide sequences of F. psychrophilumgyrB deposited in DNA databases by sequencing analysis. Results indicate that nested PCR for the gyrB region is a useful technique to detect low levels of F. psychrophilum from environmental samples contaminated with many other organisms.
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Affiliation(s)
- S Izumi
- Molecular Biology Division, National Institute of Fisheries Science, Yokohama, Japan.
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Abstract
The ethical concerns of Japanese nurses are compared with those of previously described nurses from the USA. Patient comfort was a primary concern of nurses from both countries. Participants described an ethical imperative to provide adequate pain medication for patients and prevent unnecessary and uncomfortable invasive tests and procedures, especially at the end of life as the focus changed from 'cure' to 'care'. The notion of regard for personhood varied, based on the communication styles and definition of the self inherent in the different cultures of the nurses. A common meaning centred around knowing patients as persons, listening to their needs and preferences, supporting their everyday choices through advocacy, and maintaining their dignity. Despite background cultural differences, there are common ethical concerns between nurses in Japan and the USA. This article invites readers to reflect on everyday nursing practices that exemplify ethical expertise, and the significance of this expertise in uncovering and articulating nursing ethics across cultures.
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Affiliation(s)
- D Doutrich
- Washington State University College of Nursing, 14204 NE Salmon Creek Avenue, Vancouver, WA 98686-9600, USA.
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Hirata S, Izumi S, Furukubo T, Ota M, Fujita M, Yamakawa T, Hasegawa I, Ohtani H, Sawada Y. Interactions between clarithromycin and digoxin in patients with end-stage renal disease. Int J Clin Pharmacol Ther 2005; 43:30-6. [PMID: 15704612 DOI: 10.5414/cpp43030] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [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: 11/18/2022] Open
Abstract
OBJECTIVE To report a significant increase in the serum levels of digoxin associated with the use of clarithromycin in six patients undergoing renal replacement therapy. CASE SUMMARY All six patients were males with end-stage renal disease and in need of renal replacement therapy. Four patients were anuric. The mean age was 78.8 +/- 5.8 (66-83) years. All patients except one, who was treated by hemofiltration, were treated by hemodialysis. All patients except one, who had been treated with metildigoxin (0.35 mg/week), were also taking digoxin (0.375 mg/week). Clarithromycin was administered at a dose of 200-400 mg/day for the treatment of bronchitis in all patients. The concomitant administration of clarithromycin increased serum digoxin levels from 1.8-4.0-fold in all cases. In two of six cases, a high probability of digoxin intoxication and suspicion of digoxin intoxication was evident. In three of six cases, serum digoxin levels increased within 12 days after the co-administration of clarithromycin, while in the other three cases, serum digoxin levels were increased 53-190 days after the administration of clarithromycin. CONCLUSION The simultaneous administration of clarithromycin caused an increase in digoxin levels in six patients undergoing renal replacement therapy. The increase in the serum digoxin can be attributed to the inhibition of P-glycoprotein in the intestine and/or bile capillary rather than the kidney by clarithromycin since renal function was dramatically impaired, and four of the patients were anuric. The issue of why serum digoxin levels were increased so late in three patients undergoing renal replacement is unclear. However, this interaction seemed to be clinically significant even in ESRD patients, whose renal function was highly impaired. The simultaneous use of digoxin and clarithromycin should be avoided even in patients undergoing renal replacement therapy whose renal function is impaired, since digoxin levels may increase unexpectedly.
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Affiliation(s)
- S Hirata
- Department of Pharmacy Service, Shirasagi Hospital, Osaka, Japan.
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Kato H, Kimura K, Izumi S, Nakamichi K, Danjo K, Sunada H. The effect of magnesium stearate particle size on tablet properties and tableting characteristics of granules prepared with standard formulation. J Drug Deliv Sci Technol 2005. [DOI: 10.1016/s1773-2247(05)50091-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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