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Otsuka M, Isaka T, Terada M, Arimitsu T, Kurihara T, Shinohara Y. Associations of time to return to performance following acute posterior thigh injuries with running biomechanics, hamstring function, and structure in collegiate sprinters: A prospective cohort design. Clin Biomech (Bristol, Avon) 2022; 100:105789. [PMID: 36272256 DOI: 10.1016/j.clinbiomech.2022.105789] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 09/26/2022] [Accepted: 10/02/2022] [Indexed: 02/07/2023]
Abstract
BACKGROUND The time to return to sport from acute hamstring strain injuries is associated with several functional and structural impairments. However, not all previous studies assessed the preinjury level before acute hamstring strain injuries directly. The purpose of this study was to examine the associations of the time to return to performance following acute hamstring strain injuries with deficits in running biomechanics, hamstring function and structure in collegiate sprinters by a prospective study. METHODS Using a prospective cohort design, 72 participants were recruited from a collegiate track and field team. At the preinjury assessment, a 60-m running-specific test, passive straight leg raise test and isometric knee flexion strength test were assessed at the beginning of the competitive season for three consecutive years (2017-2019). Afterwards, postinjury examinations were performed only in sprinters with acute hamstring strain injuries. FINDINGS Twelve sprinters strained their hamstring muscle (incidence rate of hamstring strain injuries: 16.7%); the majority (n = 10) were classified as grades 0-2. The running speed deficit of the running-specific test was associated with the time to return to performance as well as the passive straight leg raise test deficit. In the running-specific test, lower-limb kinetic deficits were more strongly associated with the time to return to performance compared to lower-limb kinematic deficits. INTERPRETATION A running-specific test may be considered one of the most convenient and valid tests for assessing rehabilitation progress after acute hamstring strain injuries.
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Affiliation(s)
- M Otsuka
- Faculty of Sport Science, Nippon Sport Science University, Tokyo, Japan.
| | - T Isaka
- Faculty of Health and Sport Science, Ritsumeikan University, Shiga, Japan
| | - M Terada
- Faculty of Health and Sport Science, Ritsumeikan University, Shiga, Japan
| | - T Arimitsu
- Faculty of Health Care, Hachinohe Gakuin University, Aomori, Japan
| | - T Kurihara
- Faculty of Science and Engineering, Kokushikan University, Tokyo, Japan
| | - Y Shinohara
- Faculty of Health and Sport Science, Ritsumeikan University, Shiga, Japan
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Hara H, Masuishi T, Ando T, Kawakami T, Yamamoto Y, Sugimoto N, Shiraishi K, Esaki T, Negoro Y, Tsuzuki T, Sawai H, Nakamura M, Inagaki T, Shinohara Y, Kawakami H, Kawakami K, Katsuya H, Maeda O, Fujita Y, Yoshimura K, Nakajima T, Muro K. P-99 A multicenter phase II study of mFOLFOX6 in advanced gastric cancer patients with severe peritoneal metastases: WJOG10517G. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.04.189] [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: 11/01/2022] Open
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3
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Ueki T, Sanematsu E, Furuya Y, Shinohara Y, Murakami Y, Miyazaki A, Sakamoto Y, Nakashima MN, Nakashima M. Relationship between vancomycin-associated nephrotoxicity and the number of combined nephrotoxic agents. Pharmazie 2021; 75:279-283. [PMID: 32539926 DOI: 10.1691/ph.2020.0393] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 09/29/2022]
Abstract
Vancomycin is associated with nephrotoxicity; however, the influence of the number of combined nephrotoxic agents on the incidence of vancomycin nephrotoxicity has not been clarified. We investigated patient backgrounds in 148 inpatients who received vancomycin treatment. The patients were divided into nephrotoxicity (n=35) and non-nephrotoxicity (n=113) groups. A comparison of the patient backgrounds in the two groups revealed significant differences in weight, changes in serum creatinine before vancomycin administration, blood urea nitrogen to serum creatinine ratio, length of vancomycin therapy, vancomycin trough concentration, and number of combined nephrotoxic agents. Multiple logistic regression analysis using these six factors as autonomous variables showed that the highest vancomycin trough concentration (odds ratio, 1.080; 95% confidence interval, 1.030-1.140; p = 0.003) and the number of combined nephrotoxic agents (odds ratio, 1.590; 95% confidence interval, 1.120-2.260; p = 0.010) were significantly related to nephrotoxicity.
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Affiliation(s)
- T Ueki
- Department of Hospital Pharmacy, Hospital of the University of Occupational and Environmental Health, Iseigaoka, Yahatanishi-ku, Kitakyushu, Fukuoka, Japan; Department of Pharmacy, Kitakyushu Municipal Medical Center, Sojo University, Japan; Department of Pharmacy Practice, Graduate School of Biomedical Sciences, Nagasaki University, Sojo University, Japan;,
| | - E Sanematsu
- Department of Hospital Pharmacy, Hospital of the University of Occupational and Environmental Health, Iseigaoka, Yahatanishi-ku, Kitakyushu, Fukuoka, Japan
| | - Y Furuya
- Department of Hospital Pharmacy, Hospital of the University of Occupational and Environmental Health, Iseigaoka, Yahatanishi-ku, Kitakyushu, Fukuoka, Japan
| | - Y Shinohara
- Department of Hospital Pharmacy, Hospital of the University of Occupational and Environmental Health, Iseigaoka, Yahatanishi-ku, Kitakyushu, Fukuoka, Japan
| | - Y Murakami
- Department of Pharmacy, Kitakyushu Municipal Medical Center, Sojo University, Japan
| | - A Miyazaki
- Department of Pharmacy, Kitakyushu Municipal Medical Center, Sojo University, Japan
| | - Y Sakamoto
- Department of Pharmacy, Kitakyushu Municipal Medical Center, Sojo University, Japan
| | - M N Nakashima
- Faculty of Pharmaceutical Sciences, Sojo University, Japan
| | - M Nakashima
- Department of Pharmacy Practice, Graduate School of Biomedical Sciences, Nagasaki University, Sojo University, Japan
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4
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Okazaki T, Saito Y, Hayashida T, Akaboshi S, Miyake N, Matsumoto N, Kasagi N, Adachi K, Shinohara Y, Nanba E, Maegaki Y. Bilateral cerebellar cysts and cerebral white matter lesions with cortical dysgenesis: Expanding the phenotype of LAMB1
gene mutations. Clin Genet 2018; 94:391-392. [DOI: 10.1111/cge.13378] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 05/02/2018] [Accepted: 05/04/2018] [Indexed: 11/29/2022]
Affiliation(s)
- T. Okazaki
- Division of Child Neurology, Department of Brain and Neurosciences, Faculty of Medicine; Tottori University; Yonago Japan
- Division of Clinical Genetics; Tottori University Hospital; Yonago Japan
| | - Y. Saito
- Division of Child Neurology, Department of Brain and Neurosciences, Faculty of Medicine; Tottori University; Yonago Japan
| | - T. Hayashida
- Division of Child Neurology, Department of Brain and Neurosciences, Faculty of Medicine; Tottori University; Yonago Japan
| | - S. Akaboshi
- Division of Child Neurology; Tottori Medical Center; Tottori Japan
| | - N. Miyake
- Department of Human Genetics; Yokohama City University Graduate School of Medicine; Yokohama Japan
| | - N. Matsumoto
- Department of Human Genetics; Yokohama City University Graduate School of Medicine; Yokohama Japan
| | - N. Kasagi
- Division of Clinical Genetics; Tottori University Hospital; Yonago Japan
| | - K. Adachi
- Division of Functional Genomics, Research Center for Bioscience and Technology; Tottori University; Yonago Japan
| | - Y. Shinohara
- Division of Radiology, Department of Pathophysiological Therapeutic Science, Faculty of Medicine; Tottori University; Yonago Japan
| | - E. Nanba
- Division of Clinical Genetics; Tottori University Hospital; Yonago Japan
- Division of Functional Genomics, Research Center for Bioscience and Technology; Tottori University; Yonago Japan
| | - Y. Maegaki
- Division of Child Neurology, Department of Brain and Neurosciences, Faculty of Medicine; Tottori University; Yonago Japan
- Division of Clinical Genetics; Tottori University Hospital; Yonago Japan
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Shinohara Y, Ogawa T. Reply. AJNR Am J Neuroradiol 2017; 38:E104. [PMID: 28818822 DOI: 10.3174/ajnr.a5364] [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: 11/07/2022]
Affiliation(s)
- Y Shinohara
- Division of Radiology Department of Pathophysiological and Therapeutic Science Faculty of Medicine Tottori University Yonago, Japan
| | - T Ogawa
- Division of Radiology Department of Pathophysiological and Therapeutic Science Faculty of Medicine Tottori University Yonago, Japan
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Honda MJ, Shinohara Y, Hata KI, Ueda M. Subcultured Odontogenic Epithelial Cells in Combination with Dental Mesenchymal Cells Produce Enamel–Dentin-Like Complex Structures. Cell Transplant 2017; 16:833-47. [DOI: 10.3727/000000007783465208] [Citation(s) in RCA: 31] [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: 01/09/2023] Open
Abstract
We showed in a previous study that odontogenic epithelial cells can be selectively cultured from the enamel organ in serum-free medium and expanded using feeder layers of 3T3-J2 cells. The subcultured odontogenic epithelial cells retain the capacity for ameloblast-related gene expression, as shown by semiquantitative RT-PCR. The purpose of the present study was to evaluate the potential of subcultured odontogenic epithelial cells to form tooth structures in cell–polymer constructs maintained in vivo. Enamel organs from 6-month-old porcine third molars were dissociated into single odontogenic epithelial cells and subcultured on feeder layers of 3T3-J2 cells. Amelogenin expression was detected in the subcultured odontogenic epithelial cells by immunostaining and Western blotting. The subcultured odontogenic epithelial cells were seeded onto collagen sponge scaffolds in combination with fresh dental mesenchymal cells, and transplanted into athymic rats. After 4 weeks, enamel–dentin-like complex structures were present in the implanted constructs. These results show that our culture system produced differentiating ameloblast-like cells that were able to secrete amelogenin proteins and form enamel-like tissues in vivo. This application of the subculturing technique provides a foundation for further tooth-tissue engineering and for improving our understanding of ameloblast biology.
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Affiliation(s)
- M. J. Honda
- Tooth Regeneration, Division of Stem Cell Engineering, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
| | - Y. Shinohara
- Tooth Regeneration, Division of Stem Cell Engineering, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
| | - K. I. Hata
- Japan Tissue Engineering Co. Ltd, Aichi 443-0022, Japan
| | - M. Ueda
- Department of Oral and Maxillofacial Surgery, Nagoya University Postgraduate School of Medicine, Aichi 466-8550, Japan
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Shinohara Y, Kato A, Kuya K, Okuda K, Sakamoto M, Kowa H, Ogawa T. Perfusion MR Imaging Using a 3D Pulsed Continuous Arterial Spin-Labeling Method for Acute Cerebral Infarction Classified as Branch Atheromatous Disease Involving the Lenticulostriate Artery Territory. AJNR Am J Neuroradiol 2017; 38:1550-1554. [PMID: 28596191 DOI: 10.3174/ajnr.a5247] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2016] [Accepted: 03/27/2017] [Indexed: 12/17/2022]
Abstract
BACKGROUND AND PURPOSE Branch atheromatous disease is a stroke subtype considered a risk factor for early neurologic deterioration. Meanwhile, crossed cerebellar diaschisis is thought to be influenced by the degree and location of supratentorial perfusion abnormalities and is associated with the clinical outcome in the case of an ischemic stroke. In this article, our aim was to clarify the utility of using a whole-brain 3D pulsed continuous arterial spin-labeling method as an imaging biomarker for predicting neurologic severity in branch atheromatous disease. MATERIALS AND METHODS Twenty-three patients with branch atheromatous disease in the lenticulostriate artery territory were enrolled. All patients underwent MR imaging, including DWI, 3D-TOF-MRA, and 3D-arterial spin-labeling. We measured the asymmetry index of CBF in the affected area (branch atheromatous disease), the asymmetry index of the contralateral cerebellar hemisphere (crossed cerebellar diaschisis), and the DWI infarct volume in the lenticulostriate artery territory. We also compared each parameter with the initial NIHSS score with the Pearson correlation coefficient. RESULTS Among the 23 patients, we found no correlation between NIHSS score and the asymmetry index of CBF in the affected area (branch atheromatous disease) (r = -0.027, P = .724), whereas the asymmetry index of the contralateral cerebellar hemisphere (crossed cerebellar diaschisis) and DWI infarct volumes were significantly correlated with NIHSS score (r = 0.515, P = .012; r = 0.664, P = .001, respectively). CONCLUSIONS In patients with branch atheromatous disease, 3D-arterial spin-labeling can detect crossed cerebellar diaschisis, which is correlated with the degree of neurologic severity.
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Affiliation(s)
- Y Shinohara
- From the Division of Radiology (Y.S., A.K., K.K., T.O.), Department of Pathophysiological and Therapeutic Science, Faculty of Medicine
| | - A Kato
- From the Division of Radiology (Y.S., A.K., K.K., T.O.), Department of Pathophysiological and Therapeutic Science, Faculty of Medicine
| | - K Kuya
- From the Division of Radiology (Y.S., A.K., K.K., T.O.), Department of Pathophysiological and Therapeutic Science, Faculty of Medicine
| | - K Okuda
- Division of Clinical Radiology (K.O.)
| | - M Sakamoto
- Division of Neurosurgery (M.S.), Department of Brain and Neurosciences, Faculty of Medicine
| | - H Kowa
- Division of Neurology (H.K.), Department of Brain and Neurosciences, Faculty of Medicine, Tottori University, Yonago, Japan
| | - T Ogawa
- From the Division of Radiology (Y.S., A.K., K.K., T.O.), Department of Pathophysiological and Therapeutic Science, Faculty of Medicine
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Sugahara R, Jouraku A, Nakakura T, Minaba M, Yamamoto T, Shinohara Y, Miyoshi H, Shiotsuki T. Tissue-specific expression and silencing phenotypes of mitochondrial phosphate carrier paralogues in several insect species. Insect Mol Biol 2017; 26:332-342. [PMID: 28224717 DOI: 10.1111/imb.12297] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The mitochondrial phosphate carrier gene (PiC) encodes a membrane protein that mediates the supply of inorganic phosphate from the cytosol into the mitochondrial matrix. This substrate-specific transport system plays an important role in efficient ATP synthesis. Mammals appear to have only one PiC with two alternative splicing variants whose functional differences remain unclear. The present study is the first to characterize the multiple genes that encode PiC in insects. Bombyx mori was found to have two PiC paralogues, one ubiquitous and one testis-specific, the latter seeming to be present only in Lepidoptera. Drosophila melanogaster was found to harbour two PiC paralogues, whereas Liriomyza chinensis, another dipteran, has three PiC paralogues. Two PiCs were found to be present in Plautia stali, and silencing either of these genes affected the normal development of P. stali nymphs, although their expression patterns differed amongst tissues. Schistocerca gregaria and Locusta migratoria have two PiC each, with different expression patterns. Tribolium castaneum was found to have only one PiC, which appears to play an essential role in larval development. Thus, although the inorganic phosphate transport system appears to be conserved across eukaryotes, PiC has become specialized in the different tissues of different insect species.
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Affiliation(s)
- R Sugahara
- National Agriculture and Food Research Organization, Institute of Agrobiological Sciences, 1-2 Owashi, Tsukuba, Ibaraki, Japan
| | - A Jouraku
- National Agriculture and Food Research Organization, Institute of Agrobiological Sciences, 1-2 Owashi, Tsukuba, Ibaraki, Japan
| | - T Nakakura
- National Agriculture and Food Research Organization, Institute of Agrobiological Sciences, 1-2 Owashi, Tsukuba, Ibaraki, Japan
| | - M Minaba
- National Agriculture and Food Research Organization, Institute of Agrobiological Sciences, 1-2 Owashi, Tsukuba, Ibaraki, Japan
| | - T Yamamoto
- Institute for Genome Research, University of Tokushima, Kuramotocho-3, Tokushima, Japan
| | - Y Shinohara
- Institute for Genome Research, University of Tokushima, Kuramotocho-3, Tokushima, Japan
| | - H Miyoshi
- Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto, Japan
| | - T Shiotsuki
- National Agriculture and Food Research Organization, Institute of Agrobiological Sciences, 1-2 Owashi, Tsukuba, Ibaraki, Japan
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Lucchini M, Sato SA, Ludwig A, Herrmann J, Volkov M, Kasmi L, Shinohara Y, Yabana K, Gallmann L, Keller U. Attosecond dynamical Franz-Keldysh effect in polycrystalline diamond. Science 2017; 353:916-9. [PMID: 27563093 DOI: 10.1126/science.aag1268] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Accepted: 07/27/2016] [Indexed: 11/02/2022]
Abstract
Short, intense laser pulses can be used to access the transition regime between classical and quantum optical responses in dielectrics. In this regime, the relative roles of inter- and intraband light-driven electronic transitions remain uncertain. We applied attosecond transient absorption spectroscopy to investigate the interaction between polycrystalline diamond and a few-femtosecond infrared pulse with intensity below the critical intensity of optical breakdown. Ab initio time-dependent density functional theory calculations, in tandem with a two-band parabolic model, accounted for the experimental results in the framework of the dynamical Franz-Keldysh effect and identified infrared induction of intraband currents as the main physical mechanism responsible for the observations.
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Affiliation(s)
- M Lucchini
- Department of Physics, ETH Zürich, 8093 Zürich, Switzerland.
| | - S A Sato
- Center for Computational Sciences, University of Tsukuba, 305-8577 Tsukuba, Japan
| | - A Ludwig
- Department of Physics, ETH Zürich, 8093 Zürich, Switzerland
| | - J Herrmann
- Department of Physics, ETH Zürich, 8093 Zürich, Switzerland
| | - M Volkov
- Department of Physics, ETH Zürich, 8093 Zürich, Switzerland
| | - L Kasmi
- Department of Physics, ETH Zürich, 8093 Zürich, Switzerland
| | - Y Shinohara
- Photon Science Center, University of Tokyo, 113-8656 Tokyo, Japan
| | - K Yabana
- Center for Computational Sciences, University of Tsukuba, 305-8577 Tsukuba, Japan
| | - L Gallmann
- Department of Physics, ETH Zürich, 8093 Zürich, Switzerland. Institute of Applied Physics, University of Bern, 3012 Bern, Switzerland
| | - U Keller
- Department of Physics, ETH Zürich, 8093 Zürich, Switzerland
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Abstract
Bone augmentation via tissue engineering has generated significant interest. We hypothesized that periosteum-derived cells could be used in place of bone marrow stromal cells (which are widely used) in bone engineering, but the differences in osteogenic potential between these 2 cell types are unclear. Here, we compared the osteogenic potential of these cells, and investigated the optimal osteoinductive conditions for periosteum-derived cells. Both cell types were induced, via bFGF and BMP-2, to differentiate into osteoblasts. Periosteal cells proliferated faster than marrow stromal cells, and osteogenic markers indicated that bone marrow stromal cells were more osteogenic than periosteal cells. However, pre-treatment with bFGF made periosteal cells more sensitive to BMP-2 and more osteogenic. Transplants of periosteal cells treated with BMP-2 after pre-treatment with bFGF formed more new bone than did marrow stromal cells. Analysis of these data suggests that combined treatment with bFGF and BMP-2 can make periosteum a highly useful source of bone regeneration.
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Affiliation(s)
- H Agata
- Division of Stem Cell Engineering, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
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Kawashima S, Nagayama K, Sato M, Shinohara Y, Yoshida D, Terada Y, Yanagiya M, Nakao K, Murayama T, Ichinose J, Kuwano H, Nitadori J, Anraku M, Nakajima J. F-075COMPARATIVE REVIEW OF SUBLOBAR RESECTION BEFORE AND AFTER VIRTUAL ASSISTED LUNG MAPPING INTRODUCTION IN A SINGLE INSTITUTION. Interact Cardiovasc Thorac Surg 2016. [DOI: 10.1093/icvts/ivw260.74] [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: 11/13/2022] Open
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12
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Makiyama A, Arimizu K, Hirano G, Makiyama C, Matsushita Y, Shirakawa T, Ohmura H, Komoda M, Uchino K, Inadomi K, Kusaba H, Shinohara Y, Kuwayama M, Kajitani T, Esaki T, Baba E. P-171 The impact on survival of CPT-11 as third-line or later treatment in advanced gastric cancer. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw199.165] [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: 11/14/2022] Open
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13
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Shirakata Y, Sculean A, Shinohara Y, Sena K, Takeuchi N, Bosshardt DD, Noguchi K. Healing of localized gingival recessions treated with a coronally advanced flap alone or combined with an enamel matrix derivative and a porcine acellular dermal matrix: a preclinical study. Clin Oral Investig 2015; 20:1791-800. [PMID: 26612398 DOI: 10.1007/s00784-015-1680-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [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: 06/23/2015] [Accepted: 11/22/2015] [Indexed: 10/22/2022]
Abstract
OBJECTIVE This study aimed to evaluate the effects of a porcine acellular dermal matrix (PADM) with or without an enamel matrix derivative (EMD) on gingival recession defects treated with a coronally advanced flap (CAF) in dogs. MATERIALS AND METHODS Miller class II gingival recession defects (5 mm wide and 7 mm deep) were surgically created on the labial side of bilateral maxillary canines in 12 dogs. After 8 weeks of plaque accumulation, the 24 chronic defects were randomly assigned to one of the following 4 treatments: CAF, CAF with PADM (CAF/PADM), CAF with EMD (CAF/EMD), and CAF with EMD and PADM (CAF/EMD/PADM). The animals were sacrificed 10 weeks after surgery for histologic evaluation. RESULTS In all groups, root coverage was obtained to a varying degree. PADM was well incorporated in gingival connective tissue in the CAF/PADM and in the CAF/EMD/PADM groups. The height of newly formed bone was significantly greater in the CAF/EMD/PADM group than in the CAF and CAF/PADM groups. New cementum with periodontal ligament-like tissue was predominantly found in the CAF/EMD and CAF/EMD/PADM groups. The CAF/EMD/PADM group showed the greatest amount of new cementum among the groups examined, although the difference was not statistically significant. CONCLUSION Within the limitations of the present study, it can be concluded that CAF/EMD/PADM treatment may promote periodontal regeneration in gingival recession defects. CLINICAL RELEVANCE The present results suggest that the combination of EMD and PADM in conjunction with CAF may represent a promising approach for treating single Miller class II gingival recessions.
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Affiliation(s)
- Y Shirakata
- Department of Periodontology, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1, Sakuragaoka, Kagoshima, 890-8544, Japan.
| | - A Sculean
- Department of Periodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Y Shinohara
- Department of Periodontology, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1, Sakuragaoka, Kagoshima, 890-8544, Japan
| | - K Sena
- Department of Periodontology, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1, Sakuragaoka, Kagoshima, 890-8544, Japan
| | - N Takeuchi
- Department of Periodontology, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1, Sakuragaoka, Kagoshima, 890-8544, Japan
| | - D D Bosshardt
- Department of Periodontology, School of Dental Medicine, University of Bern, Bern, Switzerland.,Department of Oral Surgery and Stomatology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - K Noguchi
- Department of Periodontology, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1, Sakuragaoka, Kagoshima, 890-8544, Japan
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Shinohara Y, Sharma S, Shallcross S, Lathiotakis NN, Gross EKU. Spectrum for Nonmagnetic Mott Insulators from Power Functional within Reduced Density Matrix Functional Theory. J Chem Theory Comput 2015; 11:4895-9. [DOI: 10.1021/acs.jctc.5b00661] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Y. Shinohara
- Max-Planck-Institut
für Mikrostrukturphysik, Weinberg
2, D-06120 Halle, Saxony-Anhalt, Germany
| | - S. Sharma
- Max-Planck-Institut
für Mikrostrukturphysik, Weinberg
2, D-06120 Halle, Saxony-Anhalt, Germany
- Department
of Physics, Indian Institute of Technology, Roorkee, 247667 Uttarkhand, India
| | - S. Shallcross
- Lehrstuhl für
Theoretische Festkörperphysik, Staudstrasse 7-B2, 91058 Erlangen, Bavaria, Germany
| | - N. N. Lathiotakis
- Max-Planck-Institut
für Mikrostrukturphysik, Weinberg
2, D-06120 Halle, Saxony-Anhalt, Germany
- Theoretical and
Physical Chemistry Institute, National Hellenic Research Foundation, Vass. Constantinou 48, GR-11635 Athens, Greece
| | - E. K. U. Gross
- Max-Planck-Institut
für Mikrostrukturphysik, Weinberg
2, D-06120 Halle, Saxony-Anhalt, Germany
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Nagai T, Takata N, Shinohara Y, Hirase H. Adaptive changes of extracellular amino acid concentrations in mouse dorsal striatum by 4-AP-induced cortical seizures. Neuroscience 2015; 295:229-36. [PMID: 25818552 DOI: 10.1016/j.neuroscience.2015.03.043] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Revised: 02/26/2015] [Accepted: 03/19/2015] [Indexed: 01/04/2023]
Abstract
The striatum is a major target of cerebral cortical output. The cortico-striatal projection has been well described, however, the neurochemical changes that occur in the striatum after prolonged cortical hyperactivation remain to be investigated. In this study, extracellular levels of glutamate, GABA, and alanine levels were measured in the dorsal striatum using microdialysis in anesthetized mice at resting condition and during 4-aminopyridine (4-AP)-induced cortical seizures. After topical application of 4-AP on the primary motor cortex that induced cortical seizures, the extracellular level of striatal GABA increased by 40% in 60 min. By contrast, the extracellular level of striatal glutamate decreased by 20%. Moreover, the surface amounts of striatal glutamate/aspartate transporter (GLAST) and glutamate transporter 1 (GLT-1), the major astrocytic high-affinity glutamate transporters, tended to increase by cortical seizures in 60 min, suggesting a recruitment of the glutamate transporters from internal stores. 4-AP also resulted in a steady increase of alanine levels which are thought to reflect glutamate and pyruvate metabolism in neurons and astrocytes. These observations possibly delineate adaptive changes of striatal metabolism by severe cortical seizures.
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Affiliation(s)
- T Nagai
- RIKEN Brain Science Institute, Wako, Saitama, Japan
| | - N Takata
- RIKEN Brain Science Institute, Wako, Saitama, Japan
| | - Y Shinohara
- RIKEN Brain Science Institute, Wako, Saitama, Japan
| | - H Hirase
- RIKEN Brain Science Institute, Wako, Saitama, Japan; Saitama University Brain Science Institute, Saitama, Saitama, Japan.
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Okamoto K, Kiga N, Shinohara Y, Tojyo I, Fujita S. Effect of interleukin-1beta and dehydroepiandrosterone on the expression of lumican and fibromodulin in fibroblast-like synovial cells of the human temporomandibular joint. Eur J Histochem 2015; 59:2440. [PMID: 25820556 PMCID: PMC4378210 DOI: 10.4081/ejh.2015.2440] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Revised: 01/07/2015] [Accepted: 01/15/2015] [Indexed: 11/23/2022] Open
Abstract
Several epidemiological studies have reported that temporomandibular disorders (TMDs) are more prevalent in women than in men. It has recently been proposed that sex hormones such as estrogen, testosterone and dehydroepiandrosterone (DHEA) are involved with the pathogenesis of TMDs. Although studies have investigated the relationship between estrogen and testosterone and the restoration of TMDs, the relationship between DHEA and TMDs is unknown. The synovial tissue of the temporomandibular joint (TMJ) is made up of connective tissue with an extracellular matrix (ECM) composed of collagen and proteoglycan. One proteoglycan family, comprised of small leucine-rich repeat proteoglycans (SLRPs), was found to be involved in collagen fibril formation and interaction. In recent years, the participation of SLRPs such as lumican and fibromodulin in the internal derangement of TMJ has been suggested. Although these SLRPs may contribute to the restoration of the synovium, their effect is still unclear. The purpose of this study was to investigate the effect of DHEA, a sex hormone, on the expression of lumican and fibromodulin in human temporomandibular specimens and in cultured human TMJ fibroblast-like synovial cells in the presence or absence of the pro-inflammatory cytokine interleukin-1beta (IL-1beta). In the in vivo study, both normal and osteoarthritic (OA) human temporomandibular synovial tissues were immunohistochemically examined. In the in vitro study, five fibroblast-like synoviocyte (FLS) cell lines were established from human TMJ synovial tissue of patients with osteoarthritis. The subcultured cells were then incubated for 3, 6, 12 or 24 h with/without IL-1beta (1 ng/mL) in the presence or absence of DHEA (10 μM). The gene expression of lumican and fibromodulin was examined using the real-time polymerase chain reaction (PCR) and their protein expression was examined using immunofluorescent staining. We demonstrated that the expression of lumican differs from that of fibromodulin in synovial tissue and furthermore, that IL-1beta induced a significant increase in lumican mRNA and immunofluorescent staining in FLS compared to cells without IL-1beta. DHEA plus IL-1beta induced a significant increase in fibromodulin, but not in lumican mRNA, compared to DHEA alone, IL-1beta alone and in the absence of DHEA and IL-1beta. In immunofluorescent staining, weaker fibromodulin staining of FLS cells was observed in cells cultured in the absence of both DHEA and IL-1beta compared to fibromodulin staining of cells cultured with DHEA alone, with DHEA plus IL-1beta, or with IL-1beta alone. These results indicate that DHEA may have a protective effect on synovial tissue in TMJ by enhancing fibromodulin formation after IL-1beta induced inflammation. DHEA enhancement of fibromodulin expression may also exert a protective effect against the hyperplasia of fibrous tissue that TGF-beta1 induces. In addition lumican and fibromodulin are differentially expressed under different cell stimulation conditions and lumican and fibromodulin may promote regeneration of the TMJ after degeneration and deformation induced by IL-1beta.
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Shinohara Y, Okamoto K, Goh Y, Kiga N, Tojyo I, Fujita S. Inhibition of fibrous adhesion formation in the temporomandibular joint of tenascin-C knockout mice. Eur J Histochem 2014; 58:2337. [PMID: 25578971 PMCID: PMC4289843 DOI: 10.4081/ejh.2014.2337] [Citation(s) in RCA: 9] [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] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Revised: 08/31/2014] [Accepted: 09/09/2014] [Indexed: 12/18/2022] Open
Abstract
Tenascin-C (TNC) is a large hexameric extracellular matrix glycoprotein that is expressed in developing organs and tumors. It has been reported that TNC is expressed in inflamed synovial membranes and deformed discs of temporomandibular joint (TMJ) disorder. However, the role of TNC in TMJ is not fully known. In this study, the role of TNC in fibrous adhesion formation of TMJ was examined using TNC knockout (TNCKO) mice. Hypermobility was produced by excessive mouth opening method on the TMJ of both wild-type (WT) and TNCKO mice. TMJ wound healing was compared histologically, and the expression of TNC, fibronectin (FN) and α-smooth muscle actin (α-SMA) in the wounded TMJ was examined by immunohistochemical and immunoblot analyses. Based on histologic analysis, fibrous adhesions were observed in the TMJ of both TNCKO and wild-type (WT) mice after excessive mouth opening. However, fibrous adhesion formation in TNCKO mice occurred later than in WT mice. TNC was expressed in the wounded TMJ disc and mandibular fossa. Although FN and α-SMA expression in the TMJ of TNCKO and WT mice was up-regulated after excessive mouth opening, FN and α-SMA protein levels were higher in WT mice at the same time points. In the wounded TMJ, TNC appears to enhance the expression of FN and α-SMA, and a lack of TNC may reduce fibrous adhesion formation in the TMJ. TNC plays an important role in TMJ wound healing, especially for wounds generated by mechanical stress.
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Sasazawa F, Onodera T, Yamashita T, Seito N, Tsukuda Y, Fujitani N, Shinohara Y, Iwasaki N. Depletion of gangliosides enhances cartilage degradation in mice. Osteoarthritis Cartilage 2014; 22:313-22. [PMID: 24333297 DOI: 10.1016/j.joca.2013.11.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [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: 08/19/2013] [Revised: 11/21/2013] [Accepted: 11/30/2013] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Glycosphingolipids (GSLs) are ubiquitous membrane components that play a functional role in maintaining chondrocyte homeostasis. We investigated the potential role of gangliosides, one of the major components of GSLs, in osteoarthritis (OA) pathogenesis. DESIGN Both age-associated and instability-induced OA models were generated using GM3 synthase knockout (GM3S(-/-)) mice. A cartilage degradation model and transiently GM3S-transfected chondrocytes were analyzed to evaluate the function of gangliosides in OA development. The amount of each series of GSLs in chondrocytes after IL-1α stimulation was profiled using mass spectrometry (MS). RESULTS OA changes in GM3S(-/-) mice were dramatically enhanced with aging compared to those in wild-type (WT) mice. GM3S(-/-) mice showed more severe instability-induced pathologic OA in vivo. Ganglioside deficiency also led to the induction of matrix metalloproteinase (MMP)-13 and ADAMTS-5 secretion and chondrocyte apoptosis in vitro. In contrast, transient GM3S transfection of chondrocytes suppressed MMP-13 and ADAMTS-5 expression after interleukin (IL)-1α stimulation. GSL profiling revealed the presence of abundant gangliosides in chondrocytes after IL-1α stimulation. CONCLUSION Gangliosides play a critical role in OA pathogenesis by regulating the expression of MMP-13 and ADAMTS-5 and chondrocyte apoptosis. Based on the obtained results, we propose that gangliosides are potential target molecules for the development of novel OA treatments.
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Affiliation(s)
- F Sasazawa
- Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan.
| | - T Onodera
- Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan.
| | - T Yamashita
- Laboratory of Biochemistry, Azabu University, Graduate School of Veterinary Medicine, Sagamihara, Japan.
| | - N Seito
- Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan.
| | - Y Tsukuda
- Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan.
| | - N Fujitani
- Laboratory of Medical and Functional Glycomics, Graduate School of Advanced Life Science, Hokkaido University, Sapporo, Japan.
| | - Y Shinohara
- Laboratory of Medical and Functional Glycomics, Graduate School of Advanced Life Science, Hokkaido University, Sapporo, Japan.
| | - N Iwasaki
- Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan.
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Shinohara Y, Kumai T, Higashiyama I, Hayashi K, Matsuda T, Tanaka Y, Takakura Y. Histological and molecular characterization of the femoral attachment of the human ligamentum capitis femoris. Scand J Med Sci Sports 2013; 24:e245-53. [DOI: 10.1111/sms.12155] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/22/2013] [Indexed: 11/30/2022]
Affiliation(s)
- Y. Shinohara
- Department of Orthopaedic Surgery; Nara Medical University; Nara Japan
| | - T. Kumai
- Department of Orthopaedic Surgery; Nara Medical University; Nara Japan
| | - I. Higashiyama
- Department of Orthopaedic Surgery; Nara Medical University; Nara Japan
| | - K. Hayashi
- Department of Orthopaedic Surgery; Nara Medical University; Nara Japan
| | - T. Matsuda
- Department of Orthopaedic Surgery; Nara Medical University; Nara Japan
| | - Y. Tanaka
- Department of Orthopaedic Surgery; Nara Medical University; Nara Japan
| | - Y. Takakura
- Department of Orthopaedic Surgery; Nara Medical University; Nara Japan
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Takabe K, Adachi Y, Saito H, Yamashita T, Wakai Y, Saito K, Shinohara Y. P02-018 - PSTPIP1 gene mutations in periodic fever patients. Pediatr Rheumatol Online J 2013. [PMCID: PMC3952242 DOI: 10.1186/1546-0096-11-s1-a125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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21
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Ohta K, Osada T, Shinohara Y, Takahashi K, Gotoh J, Yamaguchi K, Seki M, Nihei Y, Iwasawa S, Suzuki N. Different cognitive profiles between Parkinson's and Alzheimer'/INS;s diseases screened by Montreal cognitive assessment. A multicenter study of Keio PD database. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.1144] [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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Miyoshi F, Ogawa T, Kitao SI, Kitayama M, Shinohara Y, Takasugi M, Fujii S, Kaminou T. Evaluation of Parkinson disease and Alzheimer disease with the use of neuromelanin MR imaging and (123)I-metaiodobenzylguanidine scintigraphy. AJNR Am J Neuroradiol 2013; 34:2113-8. [PMID: 23744697 DOI: 10.3174/ajnr.a3567] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Progressive changes in the substantia nigra pars compacta and locus ceruleus of patients with Parkinson disease and Alzheimer disease visualized by neuromelanin MRI and cardiac postganglionic sympathetic nerve function on (123)I-metaiodobenzylguanidine scintigraphy have not been fully evaluated. We compared the diagnostic value of these modalities among patients with early Parkinson disease, late Parkinson disease, and Alzheimer disease. MATERIALS AND METHODS We compared contrast ratios of signal intensity in medial and lateral regions of the substantia nigra pars compacta and locus ceruleus with those of the tegmentum of the midbrain and the pons, respectively, by use of neuromelanin MRI in patients with early Parkinson disease (n = 13), late Parkinson disease (n = 31), Alzheimer disease (n = 6), and age-matched healthy control subjects (n = 20). We calculated heart-to-mediastinum ratios on (123)I-metaiodobenzylguanidine scintigrams after setting regions of interest on the left cardiac ventricle and upper mediastinum. RESULTS The signal intensity of the lateral substantia nigra pars compacta on neuromelanin MRI was significantly reduced in early and late Parkinson disease, and that of the medial substantia nigra pars compacta was gradually and stage-dependently reduced in Parkinson disease. The signal intensity of the locus ceruleus was obviously reduced in late Parkinson disease. Signal reduction was not significant in the substantia nigra pars compacta and locus ceruleus of patients with Alzheimer disease. The heart-to-mediastinum ratio on (123)I-metaiodobenzylguanidine scintigrams was stage-dependently reduced in Parkinson disease and normal in Alzheimer disease. The signal intensity ratios in substantia nigra pars compacta and locus ceruleus on neuromelanin MRI positively correlated with the heart-to-mediastinum ratio on (123)I-metaiodobenzylguanidine scintigrams. CONCLUSIONS Both neuromelanin MRI and (123)I-metaiodobenzylguanidine scintigraphy can help to evaluate disease progression in Parkinson disease and are useful for differentiating Parkinson disease from Alzheimer disease.
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Affiliation(s)
- F Miyoshi
- Division of Radiology, Department of Pathophysiological Therapeutic Science
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Yasuda H, Suzuki A, Koike T, Terai H, Matsumura A, Toyoda H, Tada M, Dohzono S, Sugioka Y, Okano T, Yamada K, Takahashi S, Tsukiyama K, Shinohara Y, Kamiyama A, Nakamura H. AB1101 A cross-sectional study of lumbar lesions in 262 patients with rheumatoid arthritis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.1099] [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: 11/03/2022]
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24
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Takasugi M, Fujii S, Shinohara Y, Kaminou T, Watanabe T, Ogawa T. Parenchymal hypointense foci associated with developmental venous anomalies: evaluation by phase-sensitive MR Imaging at 3T. AJNR Am J Neuroradiol 2013; 34:1940-4. [PMID: 23598832 DOI: 10.3174/ajnr.a3495] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE The risk of hemorrhage in the context of developmental venous anomaly is considered to be very low, but it has never been evaluated by susceptibility-weighted MR imaging at 3T. The goal of the present study was to evaluate the prevalence of hypointense foci (ie, microhemorrhage or cavernous malformation) associated with DVA on phase-sensitive MR imaging, on the basis of principles similar to those of susceptibility-weighted MR imaging, and to evaluate the relationship between the hypointense foci and several factors, such as white matter hyperintense lesions adjacent to DVA on T2-weighted imaging, DVA morphology, and clinical symptoms. MATERIALS AND METHODS This study retrospectively evaluated 61 lesions in 59 consecutive patients with DVA who underwent MR imaging including phase-sensitive MR imaging. Two neuroradiologists independently assessed for the presence of hypointense foci and other factors such as DVA location, depth, size, direction of draining vein on phase-sensitive MR imaging, and white matter hyperintense lesion on T2-weighted imaging. Clinical symptoms were also assessed. RESULTS Hypointense foci were observed in 62.3% (38/61) of lesions. White matter hyperintense lesion was more frequently observed in patients with hypointense foci (26/38) than in patients without hypointense foci (7/23) (P < .01). There was no significant association between hypointense foci and other factors. CONCLUSIONS Our results support the hypothesis that microhemorrhage or cavernous malformation can be related to venous congestion caused by abnormal venous drainage. We conclude that phase-sensitive MR imagingis useful for the detection of microhemorrhage or cavernous malformation in patients with DVA, especially when associated with white matter hyperintense lesion.
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Affiliation(s)
- M Takasugi
- Division of Radiology, Department of Pathophysiological and Therapeutic Science
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25
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Ono-Ogasawara M, Takaya M, Kubota H, Shinohara Y, Koda S, Akiba E, Tsuruoka S, Myojo T. Approach to the Exposure Assessment of MWCNT by Considering Size Distribution and Oxidation Temperature of Elemental Carbon. ACTA ACUST UNITED AC 2013. [DOI: 10.1088/1742-6596/429/1/012004] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Shinohara Y, Sato SA, Yabana K, Iwata JI, Otobe T, Bertsch GF. Erratum: “Nonadiabatic generation of coherent phonons” [J. Chem. Phys. 137, 22A527 (2012)]. J Chem Phys 2013. [DOI: 10.1063/1.4776755] [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: 11/14/2022] Open
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Shinohara Y, Sakamoto M, Takeuchi H, Uno T, Watanabe T, Kaminou T, Ogawa T. Subarachnoid hyperattenuation on flat panel detector-based conebeam CT immediately after uneventful coil embolization of unruptured intracranial aneurysms. AJNR Am J Neuroradiol 2012; 34:577-82. [PMID: 22899784 DOI: 10.3174/ajnr.a3243] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Flat panel detector-based CBCT can provide CT-like images of the brain without transferring patients from the angiography suite to a conventional CT facility. Conventional brain CT after uneventful endovascular treatment sometimes shows focal subarachnoid hyperattenuation with contrast leakage, mimicking SAH. Differentiating this finding from SAH is important for immediate postprocedural medical management. We investigated CBCT for detecting subarachnoid hyperattenuation immediately after coil embolization of unruptured cerebral aneurysms. MATERIALS AND METHODS Thirty-six patients with unruptured cerebral aneurysms undergoing CBCT immediately after uncomplicated coil embolization were included. The relationship between the presence of subarachnoid hyperattenuation and total volume of contrast medium injected, aneurysm size and location, and balloon and stent assistance during embolization was investigated. Statistical analyses were performed with the χ(2) test (P < .05). RESULTS Nine of the 36 patients (25.0%) showed focal subarachnoid hyperattenuation within the relevant parent artery territory harboring the aneurysm. Subarachnoid hyperattenuation locations included the ipsilateral superior frontal sulcus (n = 5), the bilateral superior frontal sulcus (n = 1), and the ipsilateral superior frontal and precentral sulci (n = 3). Statistically significant differences were observed between the presence of a subarachnoid hyperattenuation and the total volume of contrast medium injected (P < .001) and aneurysm size (P < .05). CONCLUSIONS Subarachnoid hyperattenuation can be detected by CBCT immediately after coil embolization for unruptured aneurysms. The increased amounts of contrast medium to be given before CBCT and the specific location of the hyperattenuation may help differentiate benign subarachnoid contrast leakage from SAH.
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Affiliation(s)
- Y Shinohara
- Division of Radiology, Department of Pathophysiological Therapeutic Science, Faculty of Medicine, Tottori University, Yonago, Japan.
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Shinohara Y, Suzuki Y, Hasegawa H, Nakamura M, Nishiyama T, Hiratsuka A, Ichida K. Stable isotope dilution mass spectrometric assay for PRPP using enzymatic procedures. Nucleosides Nucleotides Nucleic Acids 2012; 30:1140-6. [PMID: 22132968 DOI: 10.1080/15257770.2011.591746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Abstract
5-Phosphoribosyl-1-pyrophosphate (PRPP) is an important regulator of de novo purine synthesis. A method for the measurement of PRPP in erythrocytes was designed, which is based on the determination of [(13)C(5)]glutamate derived from [(13)C(5)]glutamine following the utilization of PRPP by the action of amidophosphoribosyltransferase. The present study describes a gas chromatographic-mass spectrometric method for determination of [(13)C(5)]glutamate using [(13)C(2)]glutamate as an internal standard. The methods involved purification by anion-exchange chromatography using a BondElut SAX and derivatization with isobutyl chlorocarbonate in water-methanol-pyridine. Quantitation was performed by selected ion monitoring of the protonated molecular ions in the chemical ionization mode. The intra-day reproducibility in the amounts of [(13)C(5)]glutamate determined was in good agreement with the actual amounts added in erythrocytes. A linear relationship was found between the amount of PRPP added and the amount of [(13)C(5)]glutamate formed from [(13)C(5)]glutamine using amidophosphoribosyltransferase.
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Affiliation(s)
- Y Shinohara
- Department of Pathophysiology, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan.
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Kiga N, Tojyo I, Matsumoto T, Hiraishi Y, Shinohara Y, Makino S, Fujita S. Expression of lumican and fibromodulin following interleukin-1 beta stimulation of disc cells of the human temporomandibular joint. Eur J Histochem 2012; 55:e11. [PMID: 22073367 PMCID: PMC3203468 DOI: 10.4081/ejh.2011.e11] [Citation(s) in RCA: 28] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2010] [Accepted: 02/22/2011] [Indexed: 11/23/2022] Open
Abstract
Small leucine-rich repeat proteoglycans (SLRP) are present in the extracellular matrix of the temporomandibular joint (TMJ) disc. Lumican and fibromodulin, classified as class 2 SLRPs, play important roles in TMJ assembly, proliferation and inflammation. Degenerative change in the TMJ disc gives rise to the process of internal derangement (ID). In this study, we immunohistochemically examined the expression of lumican and fibromodulin in nine human TMJ specimens and examined the gene expression of both proteoglycans in cultured human TMJ disc cells under interleukin-1 beta (IL-1 β)-stimulated conditions. An articular disc cell line was established by collagenase treatment of a TMJ disc. The subcultured cells were then incubated for 1, 3, 6, 12, 24 or 48 h under both normal and IL-1 β (1 ng/mL) conditions. The gene expression of lumican and fibromodulin was examined using the reverse transcription-polymerase chain reaction (RT-PCR) and real-time RT-PCR. We demonstrated that the expression of lumican significantly differs from that of fibromodulin in the deformed disc and that IL-1 β induces a significant increase in lumican mRNA, but not in fibromodulin mRNA, after 24∼48 h culture compared to cells cultured in the absence of IL-1 β (P<0.05). These results indicate that lumican and fibromodulin display different behaviors and that lumican may promote regeneration of the TMJ after degeneration and deformation induced by IL-1 β.
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Affiliation(s)
- N Kiga
- Department of Oral and Maxillofacial Surgery, Wakayama Medical University, Japan.
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Hiroshima Y, Bando M, Inagaki Y, Mihara C, Kataoka M, Murata H, Shinohara Y, Nagata T, Kido J. Resistin in gingival crevicular fluid and induction of resistin release by Porphyromonas gingivalis lipopolysaccharide in human neutrophils. J Periodontal Res 2012; 47:554-62. [DOI: 10.1111/j.1600-0765.2011.01466.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Kido J, Bando M, Hiroshima Y, Iwasaka H, Yamada K, Ohgami N, Nambu T, Kataoka M, Yamamoto T, Shinohara Y, Sagawa I, Nagata T. Analysis of proteins in human gingival crevicular fluid by mass spectrometry. J Periodontal Res 2012; 47:488-99. [DOI: 10.1111/j.1600-0765.2011.01458.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kubota Y, Mizutani K, Maeda S, Seike K, Shinohara Y, Iwata M. UP-02.123 Pre-Biopsy PSA Kinetics in Prostate Cancer Screening: Analysis of Toyota Motor Corporation Employees. Urology 2011. [DOI: 10.1016/j.urology.2011.07.941] [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: 10/16/2022]
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Kim BS, Jindo T, Eto R, Shinohara Y, Son YA, Kim SH, Matsumoto S. Crystal structures of a series of bisazomethine dyes derived from 4-(dimethylamino)-2-alkoxybenzaldehydes. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311090271] [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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Yabana K, Shinohara Y, Otobe T, Iwata JI, Bertsch G. Real-time and real-space density functional calculation for electron dynamics in crystalline solids. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.procs.2011.04.090] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Mawatari H, Yoneda M, Fujita K, Nozaki Y, Shinohara Y, Sasaki H, Iida H, Takahashi H, Inamori M, Abe Y, Kobayashi N, Kubota K, Kirikoshi H, Nakajima A, Saito S. Association between phospholipids and free cholesterol in high-density lipoprotein and the response to hepatitis C treatment in Japanese with genotype 1b. J Viral Hepat 2010; 17:859-65. [PMID: 20070501 DOI: 10.1111/j.1365-2893.2009.01253.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Pegylated interferon and ribavirin combination therapy is the standard treatment for patients with chronic hepatitis C (CHC), but treatment failure can be difficult to predict. We and others have reported a relation between lipid values and sustained viral responses in patients with CHC. However, the relationship between lipid values and treatment failure has not been previously reported. The present study investigated the association between the profiles of phospholipids and free cholesterol (FC), the main constitutive ingredients of the surface of lipoprotein, classified according to particle size and hepatitis C treatment, and determined the usefulness of these parameters for predicting the outcome of treatment. Fifty-five patients with CHC (33 men and 22 women) were included in the study. The serum total cholesterol, triglyceride, phospholipids, and FC levels in the lipoprotein subclasses were determined using high-performance liquid chromatography with gel permeation columns, enabling the lipoproteins to be classified into 13 subclasses according to particle size. According to a univariate analysis, the treatment failure group had a significantly higher serum phospholipid level overall in the high-density lipoprotein (HDL) and medium HDL fractions as well as a higher serum FC level in the HDL fraction and all HDL subclass fractions compared with the corresponding values in the non-nonvirological response group. Higher serum phospholipid and FC concentrations in the HDL subclasses were predictive of a failure to respond in patients with genotype 1b.
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Affiliation(s)
- H Mawatari
- Gastroenterology Division, Yokohama City University School of Medicine, Fukuura, Kanazawa-ku, Yokohama City, Japan
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37
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Shinohara Y, Kawashita Y, Iwata JI, Yabana K, Otobe T, Bertsch GF. First-principles description for coherent phonon generation in diamond. J Phys Condens Matter 2010; 22:384212. [PMID: 21386546 DOI: 10.1088/0953-8984/22/38/384212] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We report a first-principles description for coherent phonon generation in diamond based on the time-dependent density functional theory. The time-dependent Kohn-Sham equation is solved in real time in order to calculate the electron dynamics in periodic solid exposed to an ultrashort laser pulse. We find that the calculated forces acting on ions are consistent with measurements as regards the selection rule and the dependence on the laser intensity.
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Affiliation(s)
- Y Shinohara
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8571, Japan.
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Kiga N, Tojyo I, Matsumoto T, Hiraishi Y, Shinohara Y, Fujita S. Expression of lumican in the articular disc of the human temporomandibular joint. Eur J Histochem 2010; 54:e34. [PMID: 20819773 PMCID: PMC3167310 DOI: 10.4081/ejh.2010.e34] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2010] [Revised: 05/27/2010] [Accepted: 06/03/2010] [Indexed: 11/23/2022] Open
Abstract
Lumican belongs to the small leucine-rich repeat proteoglycan (SLRP) gene family and has been reported to exist in the cornea, intervertebral disc and tendon. Lumican plays a significant role in the assembly and regulation of collagen fibres. The human temporomandibular joint (TMJ) disc is made up of fibrocartilage with an extracellular matrix (ECM) composed of collagen and proteoglycans. The existence and behaviour of lumican have not been studied in the human TMJ disc. Therefore, we used immunohistochemical methods to detect lumican, CD34 and vascular endothelial growth factor (VEGF) and histochemical staining with toluidine blue in 13 human TMJ specimens (10 surgically removed and 3 obtained from autopsy). In both normal and deformed discs we observed staining with toluidine blue. We found that the area of metachromasia inside the deformed disc was uneven and expression of lumican was strong in the areas negative for metachromasia. Staining of VEGF and CD34 inside the deformed disc was seen. We confirmed the expression of lumican in the human TMJ disc and showed that a large number of fibroblast-like cells existed in the area of strong lumican expression. These new findings about the behaviour of lumican suggest that it may play a key role in the generation of a new collagen network by fibroblast-like cells.
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Affiliation(s)
- N Kiga
- Department of Oral and Maxillofacial Surgery, Wakayama Medical University, 811-1 Kimiidera, Wakayama City, Japan.
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39
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Ockert B, Braunstein V, Sprecher C, Shinohara Y, Kirchhoff C, Milz S. Attachment sites of the coracoclavicular ligaments are characterized by fibrocartilage differentiation: a study on human cadaveric tissue. Scand J Med Sci Sports 2010; 22:12-7. [DOI: 10.1111/j.1600-0838.2010.01142.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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40
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Nagase S, Kajiura Y, Mamada A, Abe H, Shibuichi S, Satoh N, Itou T, Shinohara Y, Amemiya Y. Changes in structure and geometric properties of human hair by aging. Int J Cosmet Sci 2010. [DOI: 10.1111/j.1468-2494.2010.00580_5.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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41
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Mawatari H, Yoneda M, Fujita K, Nozaki Y, Shinohara Y, Sasaki H, Iida H, Takahashi H, Inamori M, Abe Y, Kobayashi N, Kubota K, Kirikoshi H, Nakajima A, Saito S. Association between lipoprotein subfraction profile and the response to hepatitis C treatment in Japanese patients with genotype 1b. J Viral Hepat 2010; 17:274-9. [PMID: 19708862 DOI: 10.1111/j.1365-2893.2009.01179.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [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] [Indexed: 01/07/2023]
Abstract
Pegylated interferon and ribavirin combination therapy is the standard treatment for patients with chronic hepatitis C (CHC). Some groups have reported a relation between lipid values and response while others have reported that microsomal triglyceride transfer protein, a key enzyme in the assembly and secretion of lipoproteins, was related to hepatitis C virus (HCV). The aim of this study was to investigate the association between the lipoprotein profiles, classified according to size, and hepatitis C treatment and the usefulness for predicting the outcome of treatment. Forty-four patients with CHC (27 men and 17 women) were included in the study. The serum cholesterol and triglyceride (TG) levels in the lipoprotein subclasses were determined using high-performance liquid chromatography with gel permeation columns, which classified lipoproteins into 20 subfractions based on particle size. According to a univariate analysis, those who achieved an sustained viral response (SVR) had a significantly higher serum total cholesterol level, higher cholesterol levels in the low-density lipoprotein subfraction (25.5 nm in diameter) and the very low-density lipoprotein (VLDL) subfraction (44.5 and 36.8 nm), and a higher serum TG level in the VLDL subfraction (44.5 nm), compared with the corresponding values in the non-SVR group. Higher serum cholesterol and TG concentrations in the lipoprotein subfractions were predictive of an SVR to therapy for HCV infection with genotype 1b prior to the start of interferon treatment.
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Affiliation(s)
- H Mawatari
- Gastroenterology Division, Yokohama City University School of Medicine, Yokohama, Japan
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42
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Shinohara Y. IN27-TU-01 Risk and predicting factors concentrating on modifiable factors. J Neurol Sci 2009. [DOI: 10.1016/s0022-510x(09)70107-8] [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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43
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Hiroshima Y, Bando M, Kataoka M, Shinohara Y, Herzberg MC, Ross KF, Inagaki Y, Nagata T, Kido J. Shosaikoto increases calprotectin expression in human oral epithelial cells. J Periodontal Res 2009; 45:79-86. [PMID: 19602113 DOI: 10.1111/j.1600-0765.2009.01203.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND AND OBJECTIVE Oral epithelial cells help to prevent against bacterial infection in the oral cavity by producing antimicrobial peptides (AMPs). A broad-spectrum AMP, calprotectin (a complex of S100A8 and S100A9 proteins), is expressed by oral epithelial cells and is up-regulated by interleukin-1alpha (IL-1alpha). Shosaikoto (SST) is a traditional Japanese herbal medicine that has immunomodulatory effects and is reported to enhance the levels of IL-1alpha in epithelial cells. The purpose of this study was to investigate the effect of SST on the expression of calprotectin and other AMPs through the regulation of IL-1alpha in oral epithelial cells. MATERIAL AND METHODS Human oral epithelial cells (TR146) were cultured with SST (at concentrations ranging from 10 to 250 microg/mL) in the presence or absence of anti-IL-1alpha or IL-1 receptor antagonist. The expression of S100A8- and S100A9-specific mRNAs was examined by northern blotting. Calprotectin expression and IL-1alpha secretion were investigated by immunofluorescent staining or ELISA. The expression of other AMPs and IL-1alpha was analyzed by RT-PCR and by quantitative real-time PCR. RESULTS Shosaikoto (25 microg/mL) significantly increased the expression of S100A8- and S100A9-specific mRNAs and calprotectin protein. Shosaikoto increased S100A7 expression, but had no effect on the expression of other AMPs. The expression of IL-1alpha-specific mRNA and its protein were slightly increased by SST. A neutralizing antibody against IL-1alpha or IL-1 receptor antagonist inhibited SST up-regulated S100A8/S100A9 mRNA expression. CONCLUSION These results suggest that SST increases the expression of calprotectin and S100A7 in oral epithelial cells. In response to SST, up-regulation of calprotectin may be partially induced via IL-1alpha.
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Affiliation(s)
- Y Hiroshima
- Department of Periodontology and Endodontology, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan
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44
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Shinohara Y, Kishimoto H, Amemiya Y. Studies of silica aggregate structure and its dynamics in rubber using time-resolved USAXS and XPCS. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308098607] [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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45
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Nozue Y, Sakurai T, Kasahara T, Yamaguchi N, Yagi N, Shinohara Y, Ogawa Y, Amemiya Y. Deformation behavior of drawn polymer spherulite studied by simultaneous micro SAXS–WAXS and POM. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308096001] [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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46
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Saito M, Shinohara Y, Sasaki H, Netsu Y, Yoshida M, Nakahata N. Type 1 angiotensin receptor (AT1-R)-mediated decrease in type 2 angiotensin receptor mRNA level is dependent on Gq and extracellular signal-regulated kinase 1//2 in AT1-R-transfected PC12 cells. J Neuroendocrinol 2008; 20:299-308. [PMID: 18208547 DOI: 10.1111/j.1365-2826.2008.01646.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Angiotensin II (Ang II) functions through two major Ang II receptor subtypes, type 1 (AT1-R) and type 2 (AT2-R), both of which are classified to be G protein-coupled receptors. AT2-R is highly expressed at the fetal stage, and in heart remodelling and brain ischaemia; therefore, it is important to clarify the regulatory mechanisms of AT2-R expression. Although AT1-R is generally believed to modulate AT2-R expression in some tissues or cells, the exact mechanism remains to be clarified. In the present study, we examined the effect of AT1-R stimulation on expression of endogenous rat AT2-R (rAT2-R) in AT1-R-transfected PC12 cells. rAT2-R mRNA and protein expression were decreased by Ang II in PC12 cells transfected with rAT1A-R in a time-dependent manner, mediated through a decline in mRNA stability. The C-terminus of G protein-coupled receptor (GPCR) is important for GPCR-mediated signal transduction. Therefore, we used C-terminus-deleted human AT1-R (hAT1-327STOP), which is thought to be a nondesensitised mutant of hAT1-R. As a result, Ang II decreased rAT2-R mRNA expression to a greater extent in cells transfected with hAT1-327STOP than with wild-type hAT1-R. The decrease was completely reversed by AT1-R antagonist candesartan, G(q) inhibitor YM254980, and mitogen-activated protein kinase (MAPK) kinase 1/2 inhibitor U0126, but not by pertussis toxin, which uncouples the receptor with G(i), or p38 MAPK inhibitor SB203580. We suggest, possibly for the first time, that the hAT1-R/G(q)/extracellular signal-regulated kinase 1/2 pathway is involved in the down-regulation of AT2-R using PC12 cells transfected with AT1-R.
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MESH Headings
- Angiotensin II/pharmacology
- Animals
- Down-Regulation
- GTP-Binding Protein alpha Subunits, Gq-G11/physiology
- Gene Expression Regulation, Neoplastic/drug effects
- Mitogen-Activated Protein Kinase 1/physiology
- Mitogen-Activated Protein Kinase 3/physiology
- PC12 Cells
- Protein Structure, Tertiary/physiology
- RNA Stability/drug effects
- RNA, Messenger/metabolism
- Rats
- Receptor, Angiotensin, Type 1/chemistry
- Receptor, Angiotensin, Type 1/genetics
- Receptor, Angiotensin, Type 1/physiology
- Receptor, Angiotensin, Type 2/genetics
- Receptor, Angiotensin, Type 2/metabolism
- Signal Transduction/physiology
- Transfection
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Affiliation(s)
- M Saito
- Department of Cellular Signalling, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
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47
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Tsuchiya S, Honda MJ, Shinohara Y, Saito M, Ueda M. Collagen type I matrix affects molecular and cellular behavior of purified porcine dental follicle cells. Cell Tissue Res 2007; 331:447-59. [DOI: 10.1007/s00441-007-0532-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2007] [Accepted: 10/01/2007] [Indexed: 01/09/2023]
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48
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Honda MJ, Nakashima F, Satomura K, Shinohara Y, Tsuchiya S, Watanabe N, Ueda M. Side population cells expressing ABCG2 in human adult dental pulp tissue. Int Endod J 2007; 40:949-58. [PMID: 17916067 DOI: 10.1111/j.1365-2591.2007.01301.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
AIM To investigate the presence of side population (SP) cells by the Hoechst exclusion method in human adult dental pulp tissue. METHODOLOGY Human adult dental pulp-derived cells were generated from third molar teeth. The cells were stained with Hoechst 33342 and sorted into SP cells or non-SP cells [main population (MP) cells]. Both cell types were compared with cell growth and RT-PCR analyses. RESULTS SP cells that express ABCG2, Nestin, Notch-1 and alpha-smooth muscle actin were found at frequencies ranging from 0.67% to 1.02%. This SP profile disappeared in the presence of verapamil. These SP cells expressed dentine sialophosphoprotein and dentine matrix protein-1 when cultured in osteogenic medium. CONCLUSION Human adult dental pulp tissue contains SP cells that differentiate into odontoblast-like cells.
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Affiliation(s)
- M J Honda
- Tooth Regeneration, Division of Stem Cell Engineering, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan.
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49
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Hagita K, Arai T, Kishimoto H, Umesaki N, Shinohara Y, Amemiya Y. Two-dimensional pattern reverse Monte Carlo method for modelling the structures of nano-particles in uniaxial elongated rubbers. J Phys Condens Matter 2007; 19:335217. [PMID: 21694140 DOI: 10.1088/0953-8984/19/33/335217] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Two-dimensional pattern reverse Monte Carlo (2D pattern RMC) analysis is performed to model the structures of nano-particles in uniaxially elongated rubbers using two-dimensional patterns of structure factor of the nano-particles obtained by time-resolved two-dimensional ultra-small angle x-ray scattering. Four spot patterns are observed for a large elongation ratio and the shapes change with increasing elongation ratio. We performed the 2D pattern RMC method for the uniaxial system in order to make a model of the structures from the two-dimensional structure factors. The preliminary results of the 2D pattern RMC analysis of the two-dimensional structure factors of silica particles in a uniaxially elongated styrene-butadiene rubber are presented.
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Affiliation(s)
- K Hagita
- Department of Applied Physics, National Defense Academy, Yokosuka 239-8686, Japan
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50
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Okuma H, Kurita D, Ohnuki T, Haida M, Shinohara Y. Muscle metabolism in patients with polymyositis simultaneously evaluated by using 31P-magnetic resonance spectroscopy and near-infrared spectroscopy. Int J Clin Pract 2007; 61:684-9. [PMID: 16889559 DOI: 10.1111/j.1742-1241.2006.00968.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Simultaneous measurements of muscle energy metabolism using (31)P-magnetic resonance spectroscopy ((31)P-MRS) and the kinetics of muscular oxygen metabolism using near-infrared spectroscopy (NIRS) were conducted in polymyositis (PM) patients. The subjects were 12 PM patients (age 45 +/- 12 years) and 12 normal controls (age 41 +/- 12 years). The muscle phosphocreatine (PCr) index and intracellular pH (pHi) were determined with (31)P-MRS and the changes in intramuscular oxygenated (oxy-Hb), deoxygenated (deoxy-Hb), and total haemoglobin (total Hb) were evaluated with NIRS . The pHi and PCr index before steroid therapy in PM patients were significantly lower during exercise than in normal controls, and their recovery was statistically significantly delayed compared with the controls. The pattern of changes in NIRS over time before steroid therapy in PM patients differed from that in normal controls. There were smaller changes in deoxy-Hb and oxy-Hb during exercise, and total Hb decreased during exercise. In contrast, the kinetics of muscular metabolism after steroid therapy showed changes similar to those seen in normal controls. Simultaneous (31)P-MRS and NIRS measurements to determine the kinetics of muscular metabolism are expected to be useful as a noninvasive approach for the evaluation of treatment effects in PM patients.
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Affiliation(s)
- H Okuma
- Department of Neurology, Tokai University Tokyo Hospital, Japan.
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