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Takayama M, Maeda S, Watanabe D, Takebayashi K, Hiroshima M, Ueda M. Cholesterol suppresses spontaneous activation of EGFR-mediated signal transduction. Biochem Biophys Res Commun 2024; 704:149673. [PMID: 38401305 DOI: 10.1016/j.bbrc.2024.149673] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 01/30/2024] [Accepted: 02/11/2024] [Indexed: 02/26/2024]
Abstract
Epidermal growth factor receptor (EGFR)-mediated signal transduction controls cell growth and proliferation. The signaling pathway is regulated so that it is activated only by external EGF stimuli, but the mechanisms that prevent EGF-independent spontaneous activation of EGFR-mediated signaling are unknown. Here we report cholesterol depletion activates EGFR-mediated signaling without EGF. We applied automated single-molecule imaging to EGFR and characterized the lateral diffusion and cluster formation on cholesterol-depleted and cholesterol-supplemented membranes. In cells in which cholesterol was depleted by methyl-β-cyclodextrin (MβCD) treatment, EGFR exhibited a reduction in lateral diffusion, an acceleration of cluster formation, and autophosphorylation without EGF. Concurrently, extracellular signal-regulated kinase (ERK), which is regulated by EGFR-mediated signaling, exhibited phosphorylation and nuclear translocation without EGF. These cholesterol depletion-induced changes were similar, albeit less efficient, to those that occurred with EGF stimulation in normal cells without MβCD, indicating the spontaneous activation of EGFR signaling. The exogenous supplementation of cholesterol suppressed the MβCD-induced spontaneous activation of EGFR and ERK nuclear translocation. Single-molecule imaging of EGFR in a large number of cells revealed cell-to-cell heterogeneity, with a sub-population showing a high ability for spontaneous activation. These results provide evidence that EGFR-mediated signaling is properly regulated by cholesterol metabolism to prevent uncontrolled spontaneous activation.
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Affiliation(s)
- Miri Takayama
- Laboratory of Single Molecular Biology, Graduate School of Science and Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamadaoka, Suita, Osaka, 565-0871, Japan; Laboratory for Cell Signaling Dynamics, BDR (Biosystems and Dynamics Research Center), RIKEN, Suita, Osaka, 565-0874, Japan
| | - Sakura Maeda
- Laboratory of Single Molecular Biology, Graduate School of Science and Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamadaoka, Suita, Osaka, 565-0871, Japan; Laboratory for Cell Signaling Dynamics, BDR (Biosystems and Dynamics Research Center), RIKEN, Suita, Osaka, 565-0874, Japan
| | - Daisuke Watanabe
- Laboratory of Single Molecular Biology, Graduate School of Science and Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamadaoka, Suita, Osaka, 565-0871, Japan; Laboratory for Cell Signaling Dynamics, BDR (Biosystems and Dynamics Research Center), RIKEN, Suita, Osaka, 565-0874, Japan
| | - Kazutoshi Takebayashi
- Laboratory of Single Molecular Biology, Graduate School of Science and Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamadaoka, Suita, Osaka, 565-0871, Japan; Laboratory for Cell Signaling Dynamics, BDR (Biosystems and Dynamics Research Center), RIKEN, Suita, Osaka, 565-0874, Japan
| | - Michio Hiroshima
- Laboratory of Single Molecular Biology, Graduate School of Science and Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamadaoka, Suita, Osaka, 565-0871, Japan; Laboratory for Cell Signaling Dynamics, BDR (Biosystems and Dynamics Research Center), RIKEN, Suita, Osaka, 565-0874, Japan.
| | - Masahiro Ueda
- Laboratory of Single Molecular Biology, Graduate School of Science and Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamadaoka, Suita, Osaka, 565-0871, Japan; Laboratory for Cell Signaling Dynamics, BDR (Biosystems and Dynamics Research Center), RIKEN, Suita, Osaka, 565-0874, Japan.
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Takahashi A, Honda Y, Tanaka N, Miyake J, Maeda S, Kataoka H, Sakamoto J, Okita M. Skeletal Muscle Electrical Stimulation Prevents Progression of Disuse Muscle Atrophy via Forkhead Box O Dynamics Mediated by Phosphorylated Protein Kinase B and Peroxisome Proliferator-Activated Receptor gamma Coactivator-1alpha. Physiol Res 2024; 73:105-115. [PMID: 38466009 PMCID: PMC11019614 DOI: 10.33549/physiolres.935157] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Accepted: 10/12/2023] [Indexed: 04/26/2024] Open
Abstract
Although electrical muscle stimulation (EMS) of skeletal muscle effectively prevents muscle atrophy, its effect on the breakdown of muscle component proteins is unknown. In this study, we investigated the biological mechanisms by which EMS-induced muscle contraction inhibits disuse muscle atrophy progression. Experimental animals were divided into a control group and three experimental groups: immobilized (Im; immobilization treatment), low-frequency (LF; immobilization treatment and low-frequency muscle contraction exercise), and high-frequency (HF; immobilization treatment and high-frequency muscle contraction exercise). Following the experimental period, bilateral soleus muscles were collected and analyzed. Atrogin-1 and Muscle RING finger 1 (MuRF-1) mRNA expression levels were significantly higher for the experimental groups than for the control group but were significantly lower for the HF group than for the Im group. Peroxisome proliferator-activated receptor gamma coactivator-1alpha (PGC-1alpha) mRNA and protein expression levels in the HF group were significantly higher than those in the Im group, with no significant differences compared to the Con group. Both the Forkhead box O (FoxO)/phosphorylated FoxO and protein kinase B (AKT)/phosphorylated AKT ratios were significantly lower for the Im group than for the control group and significantly higher for the HF group than for the Im group. These results, the suppression of atrogin-1 and MuRF-1 expression for the HF group may be due to decreased nuclear expression of FoxO by AKT phosphorylation and suppression of FoxO transcriptional activity by PGC-1alpha. Furthermore, the number of muscle contractions might be important for effective EMS.
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Affiliation(s)
- A Takahashi
- Institute of Biomedical Sciences (Health Sciences), Nagasaki University, Nagasaki, Japan.
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3
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Ijuin T, Iuchi T, Tawaratsumida H, Masuda Y, Tokushige A, Maeda S, Taniguchi N. Development of a novel animal model of rotator cuff tear arthropathy replicating clinical features of progressive osteoarthritis with subchondral bone collapse. Osteoarthr Cartil Open 2023; 5:100389. [PMID: 37560389 PMCID: PMC10407568 DOI: 10.1016/j.ocarto.2023.100389] [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: 07/18/2023] [Accepted: 07/21/2023] [Indexed: 08/11/2023] Open
Abstract
OBJECTIVE To establish an animal model of modified cuff tear arthropathy (mCTA) in order to better replicate the pathophysiology associated with rotator cuff tear-induced humeral head collapse. DESIGN mCTA was induced by transection of the rotator cuff, the long head of the biceps brachii (LHB), and superior half of the joint capsule in the right shoulder of 12-week-old rats; the left shoulder underwent sham surgery. The severity of CTA was quantitated using the Murine Shoulder Arthritis Score (MSAS). The trabecular bone of the humeral head and metaphysis was analyzed using bone histomorphometry. The expression of proinflammatory cytokines and catabolic enzymes was evaluated immunohistochemically. RESULTS In the mCTA model, the MSAS increased starting from 2 weeks after induction, and there was notable subchondral bone collapse with fibrous cells at 4 weeks. The mCTA cartilage exhibited positive staining for TNF-α, IL-1β/6, MMP-3/13, and ADAMTS5. The trabecular bone volume was reduced not only in the subchondral bone but also in the metaphysis of the humeri, and bone resorption was enhanced in these areas. In the collapsed subchondral bone, both bone formation and resorption were increased. The fibrous cells showed expression of TNF-α, IL-6, and MMP-13, along with specific markers of mesenchymal stem cells. Furthermore, the fibrous cells showed osteoblastic characteristics (RUNX2-positive) and expressed RANKL. CONCLUSIONS The LHB and the capsuloligamentous complex are critical stabilizers of the glenohumeral joint, serving to prevent the advancement of CTA following massive rotator cuff tears. Fibrous cells appear to play a role in the humeral head bone resorption.
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Affiliation(s)
- T. Ijuin
- Department of Orthopaedic Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Kagoshima 890-8520, Japan
- Department of Medical Joint Materials, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Kagoshima 890-8520, Japan
| | - T. Iuchi
- Department of Orthopaedic Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Kagoshima 890-8520, Japan
| | - H. Tawaratsumida
- Department of Orthopaedic Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Kagoshima 890-8520, Japan
| | - Y. Masuda
- Department of Orthopaedic Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Kagoshima 890-8520, Japan
- Department of Locomotory Organ Regeneration, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Kagoshima 890-8520, Japan
| | - A. Tokushige
- Department of Clinical Pharmacology and Therapeutics, Graduate School of Medicine, University of the Ryukyus, Nakagami Gun Nishihara Cho, Okinawa 903-0213, Japan
| | - S. Maeda
- Department of Bone and Joint Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Kagoshima 890-8520, Japan
| | - N. Taniguchi
- Department of Orthopaedic Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Kagoshima 890-8520, Japan
- Department of Medical Joint Materials, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Kagoshima 890-8520, Japan
- Department of Locomotory Organ Regeneration, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Kagoshima 890-8520, Japan
- Department of Bone and Joint Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Kagoshima 890-8520, Japan
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Yokota S, Kaji K, Yonezawa T, Momoi Y, Maeda S. CD204⁺ tumor-associated macrophages are associated with clinical outcome in canine pulmonary adenocarcinoma and transitional cell carcinoma. Vet J 2023; 296-297:105992. [PMID: 37164121 DOI: 10.1016/j.tvjl.2023.105992] [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] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 05/04/2023] [Accepted: 05/07/2023] [Indexed: 05/12/2023]
Abstract
Tumor-associated macrophages are abundant infiltrating cells in the tumor microenvironment (TME). Macrophages can be classified into several types of subsets based on their immune responses. Among those subsets, M2 macrophages contribute to anti-inflammatory responses and create an immunosuppressive environment that promotes tumor cell proliferation. In a previous study, human cancer patients with high M2 macrophages showed a worse prognosis for many types of tumors. However, studies examining the relationship between M2 macrophages and clinical outcomes in canine tumors are limited. In the previous human and canine studies, CD204 has been used as the marker for detecting M2 macrophages. Then we evaluated CD204+ and total macrophages infiltration and its association with clinical outcomes in canine solid tumors. In this study, we examined dogs with oral malignant melanoma (OMM), pulmonary adenocarcinoma (PA), hepatocellular carcinoma (HCC), and transitional cell carcinoma (TCC). Compared to healthy tissues, CD204+ and total macrophages were increased in OMM, PA, and TCC, but not in HCC. High CD204+ macrophage levels were significantly associated with lung metastasis in TCC (P=0.030). Kaplan-Meier analysis revealed that high CD204+ macrophage levels were associated with shorter overall survival (OS) in canine patients with PA (P = 0.012) and TCC (P = 0.0053). These results suggest that CD204+ macrophages contribute to tumor progression and could be a prognostic factor in dogs with PA and TCC.
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Affiliation(s)
- S Yokota
- Department of Veterinary Clinical Pathobiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - K Kaji
- Department of Veterinary Clinical Pathobiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - T Yonezawa
- Department of Veterinary Clinical Pathobiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Y Momoi
- Department of Veterinary Clinical Pathobiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - S Maeda
- Department of Veterinary Clinical Pathobiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan.
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Inui K, Mandai K, Maeda S, Masuda S, Yamada S, Ohashi H, Ikawa T. AB0971 Relationship between walking speed and lower limb skeletal muscle mass in patients with knee joint disorders. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BackgroundKnee joint disorder is one of the factors causing frailty in the elderly, which is associated with a decrease in walking speed.ObjectivesWe measured the walking speed of patients scheduled to undergo primary total knee arthroplasty (TKA) and examined factors correlated with walking speed.MethodsThe patients with knee disorders scheduled to undergo knee arthroplasty at our hospital between July 2020 and May 2021 were included. They were assessed for basic attributes, clinical assessment including Kness Society Score (KSS), degree of pain on walking by visual analogue scale (VAS), range of motion (ROM), and also leg skeletal muscle mass index (SMI; whole-body mode DXA), quadriceps strength by dynamometer with written consent (UMIN ID: 000040940). And Japanese Cardiovascular Health Study criteria for frailty, and sarcopenia by Asian Working Group for Sarcopenia 2019 criteria were evaluated.ResultsDemographic data of 83 patients (65 women, mean age 74.9 years) included in this study was shown in Table 1. The distribution in frailty is 36.2% and that in sarcopenia is 7.3%. Most of the patients with frailty with knee disorder did not suffer from sarcopenia. A multivariate analysis was conducted with walking speed as the objective variable and the dependent variables as age, gender, pain VAS on walking, KSS, leg SMI, quadriceps strength, and ROM. The results showed that age and ROM in flexion were significantly and independently associated with walking speed (P=0.01, 0.03). Gender, pain VAS on walking, KSS, leg SMI, quadriceps strength, and ROM in extension were not significantly associated with walking speed (P=0.92, 0.11, 0.11, 0.52, 0.85, 0.52).ConclusionAmong the patients with knee disorders immediately before arthroplasty, frailty was not caused by sarcopenia. Age was found to be the most correlated factor with walking speed, and walking speed became slower with age. In addition, poor flexion angle was also the factor for delayed walking speed, but it did not correlate with lower limb skeletal muscle mass or quadriceps strength. In this study pain on walking was not significant factor for walking speed, because it was observed in most of all cases.FactorGroup disease (n)osteoarthritis78 (94%) rheumatoid arthritis5 (6.0%)body mass index (kg/m2) 25.54 (4.11)pain VAS on walking 37.08 (26.35)total Knee Society Score 77.66 (27.85)range of motion (degree)flexion119.46 (12.88) extension-9.58 (6.59)quadriceps power (N) 122.00 [53.00, 350.00]waling speed (m/sec) 0.95 (0.33)grip power (kg) 20.24 (6.97)skeletal muscle mass index (kg/m2)appendicular6.50 [4.92, 9.85] lower limb5.06 [3.76, 7.56]Frailty (n)none10 (12.5%)Pre-frail41 (51.2%) frail29 (36.2%)Sarcopenia (n)none76 (92.7%)sarcopenia4 (4.9%) severe sarcopenia2 (2.4%)mean (standard deviation); median [min max]Disclosure of InterestsNone declared
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Ishimoto K, Hatanaka N, Otani S, Maeda S, Xu B, Yasugi M, Moore JE, Suzuki M, Nakagawa S, Yamasaki S. Tea crude extracts effectively inactivate severe acute respiratory syndrome coronavirus 2. Lett Appl Microbiol 2021; 74:2-7. [PMID: 34695222 PMCID: PMC8661916 DOI: 10.1111/lam.13591] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 07/21/2021] [Revised: 10/03/2021] [Accepted: 10/19/2021] [Indexed: 12/29/2022]
Abstract
It is well known that black and green tea extracts, particularly polyphenols, have antimicrobial activity against various pathogenic microbes including viruses. However, there is limited data on the antiviral activity against severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2), which emerged rapidly in China in late 2019 and which has been responsible for coronavirus disease 2019 (COVID‐19) pandemic globally. In this study, 20 compounds and three extracts were obtained from black and green tea and found that three tea extracts showed significant antiviral activity against SARS‐CoV‐2, whereby the viral titre decreased about 5 logs TCID50 per ml by 1·375 mg ml−1 black tea extract and two‐fold diluted tea bag infusion obtained from black tea when incubated at 25°C for 10 s. However, when concentrations of black and green tea extracts were equally adjusted to 344 µg ml−1, green tea extracts showed more antiviral activity against SARS‐CoV‐2. This simple and highly respected beverage may be a cheap and widely acceptable means to reduce SARS‐CoV‐2 viral burden in the mouth and upper gastrointestinal and respiratory tracts in developed as well as developing countries.
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Affiliation(s)
- K Ishimoto
- Laboratory of Innovative Food Science, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan.,Global Center for Medical Engineering and Informatic, Osaka University, Osaka, Japan
| | - N Hatanaka
- Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan.,Asian Health Science Research Institute, Osaka Prefecture University, Izumisano, Osaka, Japan.,Osaka International Research Center for Infectious Diseases, Osaka Prefecture University, Izumisano, Osaka, Japan
| | - S Otani
- Laboratory of Innovative Food Science, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan.,R&D Group, Mitsui Norin Co. Ltd, Fujieda, Shizuoka, Japan
| | - S Maeda
- Laboratory of Innovative Food Science, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan.,R&D Group, Mitsui Norin Co. Ltd, Fujieda, Shizuoka, Japan
| | - B Xu
- Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan
| | - M Yasugi
- Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan.,Asian Health Science Research Institute, Osaka Prefecture University, Izumisano, Osaka, Japan.,Osaka International Research Center for Infectious Diseases, Osaka Prefecture University, Izumisano, Osaka, Japan
| | - J E Moore
- Northern Ireland Public Health Laboratory, Nightingale (Belfast City) Hospital, Belfast, UK
| | - M Suzuki
- Laboratory of Innovative Food Science, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan.,R&D Group, Mitsui Norin Co. Ltd, Fujieda, Shizuoka, Japan
| | - S Nakagawa
- Laboratory of Innovative Food Science, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan.,Global Center for Medical Engineering and Informatic, Osaka University, Osaka, Japan.,Laboratory of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan
| | - S Yamasaki
- Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan.,Asian Health Science Research Institute, Osaka Prefecture University, Izumisano, Osaka, Japan.,Osaka International Research Center for Infectious Diseases, Osaka Prefecture University, Izumisano, Osaka, Japan
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Tanaka N, Kimura S, Kamatari YO, Nakata K, Kobatake Y, Inden M, Yamato O, Urushitani M, Maeda S, Kamishina H. In vitro evidence of propagation of superoxide dismutase-1 protein aggregation in canine degenerative myelopathy. Vet J 2021; 274:105710. [PMID: 34166783 DOI: 10.1016/j.tvjl.2021.105710] [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] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 06/17/2021] [Accepted: 06/18/2021] [Indexed: 11/30/2022]
Abstract
Canine degenerative myelopathy (DM) is a progressive and fatal neurodegenerative disorder that has been linked to mutations in the superoxide dismutase 1 (SOD1) gene. The accumulation of misfolded protein aggregates in spinal neurons and astrocytes is implicated as an important pathological process in DM; however, the mechanism of protein aggregate formation is largely unknown. In human neurodegenerative diseases, such as amyotrophic lateral sclerosis (ALS), cell-to-cell propagation of disease-relevant proteins has been demonstrated. Therefore, in this study, propagation of aggregation-forming property of mutant SOD1 protein in DM in vitro was investigated. This study demonstrated that aggregates composed of canine wild type SOD1 protein were increased by co-transfection with canine mutant SOD1 (E40K SOD1), indicating intracellular propagation of SOD1 aggregates. Further, aggregated recombinant SOD1 proteins were released from the cells, taken up by other cells, and induced further aggregate formation of normally folded SOD1 proteins. These results suggest intercellular propagation of SOD1 aggregates. The hypothesis of cell-to-cell propagation of SOD1 aggregates proposed in this study may underly the progressive nature of DM pathology.
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Affiliation(s)
- N Tanaka
- Joint Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - S Kimura
- The United Graduate School of Veterinary Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - Y O Kamatari
- Division of Instrumental Analysis, Life Science Research Center, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - K Nakata
- The United Graduate School of Veterinary Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - Y Kobatake
- Joint Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - M Inden
- Laboratory of Medical Therapeutics and Molecular Therapeutics, Gifu Pharmaceutical University, 1-26-4 Daigaku-Nishi, Gifu, 501-1196, Japan
| | - O Yamato
- Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima, 890-8580, Japan
| | - M Urushitani
- Department of Neurology, Shiga Univ. of Medical Science, Seta Tsukinowa-cho, Otsu, Shiga, 520-2192, Japan
| | - S Maeda
- Joint Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan; The United Graduate School of Veterinary Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - H Kamishina
- Joint Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan; The United Graduate School of Veterinary Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan.
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Maeda S, Kawabata M, Yonai R, Tsuda Y, Kawashima T, Atarashi H, Hirao K. Utility of novel Omnipolar activation mapping for the detection of ventricular premature contraction origin. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0415] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Bipolar electrograms are significantly influenced by direction of the propagating wavefront in relation to the recording bipole. Omnipolar voltage mapping may be superior to standard bipolar mapping since it obtains maximum voltage of all possible bipolar electrode orientations without the need for catheter rotation. Therefore, omnipolar maps can provide voltage maps with larger voltages as well as better defined boundaries.
Purpose
Whether omnipolar activation maps also describe better activation maps versus traditional bipolar maps during ventricular premature contraction (VPC) catheter ablation is unclear.
Methods
A high-density mapping catheter was advanced to the ventricular outflow tract and a high-resolution activation map was created. Each electrode along and across the splines of the catheter are 4mm apart. Bipoles were calculated along (MAP 2), across (MAP 3) and bidirectional (MAP 4) the splines while omnipoles (MAP 1) were derived from a right triangle clique. Within a square area, four omnipolar and two bipolar values along, across and bidirectional values were defined.
Results
Though the earliest activation site was vague by along and across maps (arrow), white color became evident by bidirectional map, and the VPC origin became distinct with omnipolar mapping. RF lesions were given via an open-irrigated ablation catheter targeting a lesion size index 5.0. The VPC was eliminated by radiofrequency ablation.
Conclusion
Omnipolar activation mapping may be more accurate than traditional bipolar mapping during ventricular premature contraction (VPC) catheter ablation.
Figure 1
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- S Maeda
- AOI Universal Hospital, Kawasaki, Japan
| | | | - R Yonai
- AOI Universal Hospital, Kawasaki, Japan
| | - Y Tsuda
- AOI Universal Hospital, Kawasaki, Japan
| | | | | | - K Hirao
- AOI Universal Hospital, Kawasaki, Japan
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Fujie S, Hasegawa N, Sanada K, Hamaoka T, Padilla J, Martinez-Lemus L, Maeda S, Iemitsu M. Time course of improvement in novel nitric oxide-regulated hormones in response to exercise training in middle-aged and older adults. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.3241] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
Cardiovascular disease risk augments with advance of age. The mechanism of the increased cardiovascular disease risk by aging is related to attenuation of arterial function via endothelium-derived relaxing factor, such as nitric oxide (NO). Recently, apelin and adropin have identified as NO-upregulated hormones, whereas augmented secretion of asymmetric dimethylarginine (ADMA) have identified as NO-downregulated hormones. However, the effects of exercise training-induced changes in NO-regulated hormones on the reduction of arterial stiffness via NO productions remain unclear.
Purpose
This study aimed to determine the time-dependent changes in NO-regulated hormones related to exercise-training effects of arterial stiffness via NO productions in healthy middle-aged and older adults.
Methods
Thirty-two Japanese healthy middle-aged and older subjects (67±1 years) were randomly divided into two groups: exercise intervention and sedentary controls. Subjects in the training group completed 8-week of aerobic exercise training (60–70% peak oxygen uptake [VO2peak] for 45 min, 3 days/week). We evaluated plasma nitrite/nitrate (NOx), apelin, and ADMA levels, serum apelin level and carotid-femoral pulse wave velocity (cfPWV) as an index of arterial stiffness, measured every 2 weeks for 8-week in the training group.
Results
cfPWV was gradually declined from baseline to 8-week and significantly decreased from baseline at weeks 6 (P<0.05) and 8 (P<0.01). Plasma NOx level was gradually elevated during exercise intervention and significantly increased from baseline at weeks 6 (P<0.05) and 8 (P<0.01). Interestingly, plasma apelin and serum adropin levels were gradually elevated during exercise intervention and significantly increased from baseline at weeks 4, 6 and 8 (each P<0.01). Additionally, plasma ADMA level was significantly decreased at 8-week intervention (P<0.01). Furthermore, the exercise training-induced increase in plasma NOx level was significantly correlated with the changes in circulating apelin (r=0.505, P<0.05), adropin (r=0.662, P<0.01), or ADMA (r=−0.483, P<0.05) levels before and after the 8-week. The exercise training-induced increase in plasma NOx level was significantly correlated with training-induced changes in circulating apelin (r=0.483, P<0.05) or adropin (r=0.556, P<0.05) before and after the 6-week.
Conclusions
These results suggest that the NO-upregulated hormones (apelin and adropin) were increased at the early stage of exercise training intervention and NO-downregulated hormone (ADMA) was decreased at the late stage of exercise training intervention, and these changes in NO-regulated hormones may be contributed to the reduction of arterial stiffness in the middle-aged and older adults.
Funding Acknowledgement
Type of funding source: Public grant(s) – National budget only. Main funding source(s): This work was supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology of Japan.
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Affiliation(s)
- S Fujie
- Ritsumeikan University, Kusatsu, Japan
| | | | - K Sanada
- Ritsumeikan University, Kusatsu, Japan
| | - T Hamaoka
- Tokyo Medical University, Tokyo, Japan
| | - J Padilla
- University of Missouri, Columbia, United States of America
| | | | - S Maeda
- University of Tsukuba, Ibaraki, Japan
| | - M Iemitsu
- Ritsumeikan University, Kusatsu, Japan
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10
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Fujie S, Hasegawa N, Sanada K, Hamaoka T, Maeda S, Iemitsu M. 62 Time course of improvement in secretory unbalance of asymmetric dimethylarginine and nitric oxide productions in response to exercise training in middle-aged and older adults. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehz872] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Funding Acknowledgements
Supported by Grants-in-Aid for Scientific Research (#17H02182, #16K13059, M. Iemitsu; #18J01024, S. Fujie)
Introduction
Aging is well known to elevate risks of cardiovascular diseases. As a mechanism of these increased risks with aging, a reduction of nitric oxide (NO) production via augmented secretion of asymmetric dimethylarginine (ADMA), an endogenous inhibitor of NO synthesis is related. Habitual aerobic exercise has shown to improve secretory unbalance of endothelium-derived regulating factors with aging, such as increase in NO and decrease in ADMA, resulting in the reduction of arterial stiffness. However, the time course of improvement in secretory unbalance of NO and ADMA productions in response to exercise training in middle-aged and older adults remains unclear.
Purpose
This study aimed to determine the time course of changes in plasma nitrite/nitrate (NOx) and ADMA levels related to exercise-training effects of arterial stiffness in healthy middle-aged and older adults.
Methods
Thirty-two Japanese healthy middle-aged and older subjects (67 ± 1 years) were randomly divided into two groups: exercise intervention and sedentary controls. Subjects in the training group completed 8-week of aerobic exercise training (60-70% peak oxygen uptake [VO2peak] for 45 min, 3 days/week). We evaluated plasma NOx and ADMA concentrations and carotid-femoral pulse wave velocity (cfPWV) as an index of arterial stiffness, measured every 2 weeks for 8-week in the training group.
Results
cfPWV was gradually declined from baseline to 8-week and significantly decreased from baseline at weeks 6 (P < 0.05) and 8 (P < 0.01). Plasma NOx level was gradually elevated during exercise intervention and significantly increased from baseline at weeks 6 (P < 0.05) and 8 (P < 0.01). Interestingly, plasma ADMA level was significantly decreased at 8-week intervention (P < 0.05). Furthermore, the exercise training-induced reduction in plasma ADMA level was negatively correlated with the change in plasma NOx level before and after the 8-week (r = -0.483, P < 0.05). The exercise training-induced change in plasma ADMA concentration was positively correlated with training-induced change in cfPWV before and after the 8-week (r = 0.633, P < 0.01). Additionally, there was a negative correlation between the changes in plasma NOx level and cfPWV before and after the 8-week (r = -0.642, P < 0.05).
Conclusions
These results suggest that habitual aerobic exercise can normalize the secretory unbalance of NO and ADMA productions in 6 to 8 weeks, and these balance normalizations may be contributed to the reduction of arterial stiffness in the middle-aged and older adults.
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Affiliation(s)
- S Fujie
- University of Tsukuba, Ibaraki, Japan
| | | | - K Sanada
- Ritsumeikan University, Shiga, Japan
| | - T Hamaoka
- Tokyo Medical University, Tokyo, Japan
| | - S Maeda
- University of Tsukuba, Ibaraki, Japan
| | - M Iemitsu
- Ritsumeikan University, Shiga, Japan
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11
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Feldsine PT, Jucker MT, Kaur M, Lienau AH, Kerr DE, Adamson A, Beaupre L, Bishop J, Casasola E, Cote C, Desilets S, D’lima C, Elahimanesh P, Fitzgerald S, Forgey R, Fortin J, Gohil V, Griffin J, Hardin M, Kaur D, Ketrenos J, King A, Kupski B, Luce S, Lucia L, Maeda S, Markun D, Marquez-Gonzalez M, McClendon J, McKessock J, Nelson C, Nguyen T, O’Brien C, Ramos M, Reilly S, Roa N, Schiffelbein Z, Shaffer K, Shepherd D, Sowell S, Trujillo E, Wang S, Williams K. Evaluation of the Assurance GDS® for Salmonella Method in Foods and Environmental Surfaces: Multilaboratory Collaborative Study. J AOAC Int 2019. [DOI: 10.1093/jaoac/93.1.150] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
A multilaboratory collaborative study was conducted to compare the detection of Salmonella by the Assurance GDS® for Salmonella method and the Reference culture methods. Six foods, representing a variety of low microbial and high microbial load foods were analyzed. Seventeen laboratories in the United States and Canada participated in this study. No statistical differences (P < 0.05) were observed between the Assurance GDS for Salmonella and the Reference culture methods for any inoculation level of any food type or naturally contaminated food, except for pasta, for which the Assurance GDS method had a higher number of confirmed test portions for Salmonella compared to the Reference method.
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Affiliation(s)
| | - Markus T Jucker
- BioControl Systems, Inc., 12822 SE 32nd St, Bellevue, WA 98005
| | - Mandeep Kaur
- BioControl Systems, Inc., 12822 SE 32nd St, Bellevue, WA 98005
| | - Andrew H Lienau
- BioControl Systems, Inc., 12822 SE 32nd St, Bellevue, WA 98005
| | - David E Kerr
- BioControl Systems, Inc., 12822 SE 32nd St, Bellevue, WA 98005
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12
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Sakai S, Adachi R, Akiyama H, Teshima R, Doi H, Shibata H, Urisu A, Arakawa F, Haraguchi H, Hirose Y, Hirota M, Iidzuka T, Ikeno K, Kojima K, Maeda S, Minegishi Y, Mishima T, Oguchi K, Seki T, Yamakawa H, Yano T, Yasuda K. Determination of Walnut Protein in Processed Foods by Enzyme-Linked Immunosorbent Assay: Interlaboratory Study. J AOAC Int 2019. [DOI: 10.1093/jaoac/93.4.1255] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Because food allergens from tree nuts, including walnuts, are a frequent cause of adverse food reactions for allergic patients, the labeling of foods containing ingredients derived from tree nuts is required in numerous countries. According to Japanese regulations, the labeling of food products containing walnuts is recommended. To ensure proper labeling, a novel sandwich ELISA kit for the determination of walnut protein in processed foods (Walnut Protein [2S-Albumin] Kit; Morinaga Institute of Biological Science, Inc.; walnut kit) has been developed. We prepared seven types of incurred samples (model processed foods: biscuits, bread, sponge cake, orange juice, jelly, chicken meatballs, and rice gruel) containing 10 g walnut soluble protein/g of food for use in interlaboratory evaluations of the walnut kit. The walnut kit displayed sufficient reproducibility relative standard deviations (interlaboratory precision: 5.89.9 RSDR) and a high level of recovery (81119) for all the incurred samples. All the repeatability relative standard deviation (RSDr) values for the incurred samples that were examined were less than 6.0. The results of this interlaboratory evaluation suggested that the walnut kit could be used as a precise and reliable tool for determination of walnut protein in processed foods.
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Affiliation(s)
- Shinobu Sakai
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Reiko Adachi
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Hiroshi Akiyama
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Reiko Teshima
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Hirotoshi Doi
- Morinaga Institute of Biological Science, Inc., 2-1-16, Sachiura, Kanazawa-ku, Yokohama 236-0003, Japan
| | - Haruki Shibata
- Morinaga Institute of Biological Science, Inc., 2-1-16, Sachiura, Kanazawa-ku, Yokohama 236-0003, Japan
| | - Atsuo Urisu
- Fujita Health University, The Second Teaching Hospital, 3-6-10, Otobashi, Nakagawa-ku, Nagoya 454-8509, Japan
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13
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Takahashi K, Kosaki K, Tanahashi K, Osuka Y, Tanaka K, Kuro-o M, Maeda S. Relationship between aerobic fitness and nephron index in middle-aged and older adults. J Sci Med Sport 2019. [DOI: 10.1016/j.jsams.2019.08.281] [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: 11/16/2022]
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14
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Kosaki K, Tanahashi K, Matsui M, Akazawa N, Osuka Y, Tanaka K, Dunstan D, Owen N, Shibata A, Oka K, Maeda S. Objectively assessed sedentary behavior, physical activity, and renal function in middle-aged and older Japanese adults. J Sci Med Sport 2019. [DOI: 10.1016/j.jsams.2019.08.243] [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: 10/25/2022]
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15
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Muser D, Santangeli P, Castro S, Casado Arroyo R, Maeda S, Benhayon D, Liuba I, Liang J, Sadek M, Chahal A, Magnani S, Garcia F, Marchlinski F, Selvanayagam J, Nucifora G. 553Prognostic value of non-ischemic ring-like left ventricular scar pattern in patients with apparently idiopathic ventricular arrhythmias: a CMR imaging study. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez125.004] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- D Muser
- University of Pennsylvania, Philadelphia, United States of America
| | - P Santangeli
- University of Pennsylvania, Philadelphia, United States of America
| | - S Castro
- University of Pennsylvania, Philadelphia, United States of America
| | | | - S Maeda
- Tokyo Medical And Dental University, Tokyo, Japan
| | - D Benhayon
- Memorial Healthcare System, Electrophysiology, Miami, United States of America
| | - I Liuba
- Linkoping University Hospital, Linkoping, Sweden
| | - J Liang
- University of Pennsylvania, Philadelphia, United States of America
| | - M Sadek
- University of Ottawa Heart Institute, Ottawa, Canada
| | - A Chahal
- University of Pennsylvania, Philadelphia, United States of America
| | - S Magnani
- New York University Langone Medical Center, New York, United States of America
| | - F Garcia
- University of Pennsylvania, Philadelphia, United States of America
| | - F Marchlinski
- University of Pennsylvania, Philadelphia, United States of America
| | - J Selvanayagam
- Flinders Medical Centre and Flinders University, Adelaide, Australia
| | - G Nucifora
- University Hospital of South Manchester NHS Foundation Trust, Manchester, United Kingdom of Great Britain & Northern Ireland
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16
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Iida J, Ishii S, Nakajima Y, Sessler DI, Teramae H, Kageyama K, Maeda S, Anada N, Shibasaki M, Sawa T, Nakayama Y. Hyperglycaemia augments lipopolysaccharide-induced reduction in rat and human macrophage phagocytosis via the endoplasmic stress-C/EBP homologous protein pathway. Br J Anaesth 2019; 123:51-59. [PMID: 31084986 DOI: 10.1016/j.bja.2019.03.040] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 06/05/2017] [Revised: 03/04/2019] [Accepted: 03/05/2019] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Macrophage phagocytosis constitutes an essential part of the host defence against microbes and the resolution of inflammation. Hyperglycaemia during sepsis is reported to reduce macrophage function, and thus, potentiate inflammatory deterioration. We investigated whether high-glucose concentrations augment lipopolysaccharide-induced reduction in macrophage phagocytosis via the endoplasmic stress-C/EBP homologous protein (CHOP) pathway using animal and laboratory investigations. METHODS Peritoneal macrophages of artificially ventilated male Wistar rats, divided into four groups based on target blood glucose concentrations achieved by glucose administration with or without lipopolysaccharide, were obtained after 24 h. Human macrophages were also cultured in normal or high glucose with or without lipopolysaccharide exposure for 72 h. Changes in the phagocytic activity, intranuclear CHOP expression, and intracellular Akt phosphorylation status of macrophages were evaluated. These changes were also evaluated in human macrophages after genetic knock-down of CHOP by specific siRNA transfection or resolvin D2 treatment. RESULTS Lipopolysaccharide impaired phagocytosis, increased intranuclear expression of CHOP, and inhibited Akt phosphorylation in both rat peritoneal and human macrophages. Hyperglycaemic glucose concentrations augmented these changes. Genetic knock-down of CHOP restored phagocytic ability and Akt phosphorylation in human macrophages. Furthermore, resolvin D2 co-incubation restored the inhibited phagocytosis and Akt phosphorylation along with the inhibition of intranuclear CHOP expression in human macrophages. CONCLUSIONS These findings imply that controlling endoplasmic reticulum stress might provide new strategies for restoring reduced macrophage phagocytosis in sepsis-induced hyperglycaemia.
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Affiliation(s)
- J Iida
- Department of Anesthesiology and Critical Care, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - S Ishii
- Department of Anesthesiology and Critical Care, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Y Nakajima
- Department of Anesthesiology and Critical Care, Kansai Medical University, Osaka, Japan.
| | - D I Sessler
- Department of Outcomes Research, Anesthesiology Institute, Cleveland Clinic, Cleveland, OH, USA
| | - H Teramae
- Faculty of Teacher Education, Shumei University, Chiba, Japan
| | - K Kageyama
- Department of Anesthesiology and Critical Care, Kansai Medical University, Osaka, Japan
| | - S Maeda
- Department of Anesthesiology and Critical Care, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - N Anada
- Department of Anesthesiology and Critical Care, Kansai Medical University, Osaka, Japan
| | - M Shibasaki
- Department of Anesthesiology and Critical Care, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - T Sawa
- Department of Anesthesiology and Critical Care, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Y Nakayama
- Department of Anesthesiology and Critical Care, Kyoto Prefectural University of Medicine, Kyoto, Japan
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17
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Uchida M, Uchida K, Maeda S, Yonezawa T. Expression of apoptosis inhibitor of macrophages in tissue macrophages, leukocytes and vascular endothelial cells of dogs. Tissue Cell 2019; 58:112-120. [PMID: 31133238 DOI: 10.1016/j.tice.2019.05.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 01/29/2019] [Revised: 04/30/2019] [Accepted: 05/01/2019] [Indexed: 10/26/2022]
Abstract
Apoptosis inhibitor of macrophages (AIM) is a protein which plays important roles in controlling the immune response and inflammation in human and mice. In dogs, AIM is reported to be expressed in cancerated macrophages and regulate the survival of these tumor cells. In this study, to elucidate the physiological expression pattern of AIM in dogs, systemic expression and distribution of AIM of dogs were investigated. Mature healthy Beagles were used. Various tissues, peripheral blood cells, and bone marrow cells of normal dogs were collected for in situ hybridization, real-time RT-PCR, and immunohistochemistry. AIM mRNA and protein were expressed in tissue macrophages of the spleen, liver, lungs, and lymph nodes, but not in the microglia of the cerebrum. Proximal tubules in the kidney also expressed AIM protein. Monocytes and B lymphocytes in circulating blood and a part of microvasculature endothelial cells showed AIM expression at both the mRNA and protein levels. In the bone marrow, early-stage monocyte progenitor-like cells expressed AIM mRNA and protein. These results clarified that AIM is expressed in more cell types than previously reported in human and mice. These data spread the possibility of AIM physiological functions and implies the relationship of AIM to the maturation of macrophage-strain cells in dogs and other species.
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Affiliation(s)
- M Uchida
- Laboratory of Veterinary Clinical Pathobiology, Department of Veterinary Medical Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan
| | - K Uchida
- Laboratory of Veterinary Pathology, Department of Veterinary Medical Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan
| | - S Maeda
- Laboratory of Veterinary Clinical Pathobiology, Department of Veterinary Medical Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan
| | - T Yonezawa
- Laboratory of Veterinary Clinical Pathobiology, Department of Veterinary Medical Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan.
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18
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Kitayama K, Maeda S, Nakamura A, Katayama I, Wataya-Kaneda M. 723 Sirolimus delivery to dermis and blood via oral and topical sirolimus formulations in hairless mice. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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19
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Bouvet A, Amelot A, Pelorson X, Maeda S, Van Hirtum A. External lighting and sensing photoglottography: Characterization and MSePGG algorithm. Biomed Signal Process Control 2019. [DOI: 10.1016/j.bspc.2019.01.014] [Citation(s) in RCA: 2] [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: 11/29/2022]
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20
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Maeda S, Toda K, Hata H, Miyagawa S, Yoshikawa Y, Kainuma S, Kawamura T, Kawamura A, Yoshida S, Ueno T, Kuratani T, Sawa Y. Valvular Disease Management in Patients with Continuous-Flow Left Ventricular Assist Device. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.906] [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] Open
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21
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Zwiefelhofer ML, Zwiefelhofer EM, Yang SX, Maeda S, Singh J, Adams GP. 133 Test of minimum-intervention protocols for optimizing in vitro embryo production in bison. Reprod Fertil Dev 2019. [DOI: 10.1071/rdv31n1ab133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The study was done to determine whether minimal handling protocols for ovarian synchronization and ovarian superstimulation may be used to increase in vitro embryo production in bison. Ultrasound-guided cumulus-oocyte complex (COC) collection was done in a group of bison (n=23; random start) during the anovulatory season to synchronize new follicular wave emergence. The COC were classified morphologically (compact-good and -regular, expanded, denuded, degenerate) but not processed further. At the time of COC collection (Day 0), bison were assigned randomly to 3 groups and given 5mL of saline IM (non-superstimulated controls; n=11), 10 Armour units of pFSH (Antrin R10, Kyoritsu Seiyaku Corp., Tokyo, Japan) in 5mL of saline IM once per day from Day 0 to 2 (regular FSH; n=5), or 30 armour units of a sustained-release form of pFSH (Antrin R10Al, Kyoritsu Seiyaku Corp.) in 5mL of saline SC on Day 0 (long-acting FSH; n=7). On Day 4, a second COC collection was performed. Only compact COC were processed. The COC were matured in vitro for 25 to 28h at 38.8°C, fertilized (2×106 sperm mL−1) and co-incubated at 38.8°C in 5% CO2 for 18h. Presumptive zygotes were denuded and cultured at 38.8°C in 5% O2, 5% CO2 and 90% N2. Nominal data were compared by t-test and analysis of variance. Binomial data were compared among groups by chi-squared. There was no difference between the first (random) COC collection (n=23) and second collection (n=11 non-superstimulated controls) in the total number of follicles detected, but the distribution among size categories (3-4, 4-8, and >8mm) differed, i.e. fewer in the 3 to 4mm category at the time of the second COC collection (12.2±1.0v. 8.1±1.4; P<0.05). In the nonstimulated control group, there were no differences between the first and second COC collections in the number of follicles aspirated (12.7±1.0v. 10.4±1.5), number of COC collected (7.7±0.9v. 5.3±1.3), or in the categorical distribution of COC. At the second COC collection, the number of follicles in the >8mm category was greater in the regular FSH group than in the control or long-acting FSH groups (2.8±0.5v. 1.1±0.3, and 1.9±0.4, respectively; P<0.05), but no differences were detected in the number of follicles aspirated, COC collected, or in the categorical distribution of COC. The cleavage rate (of total oocytes submitted to in vitro maturation), recorded 2 days after IVF, was higher in the control group than in either the regular FSH or long-acting FSH groups [25/35 (71.4%), 7/28 (25.0%), 8/35 (22.8%); P<0.0001]. The freezable embryo production rate, recorded 7 days after IVF, was greater in the control group than in the regular FSH or long-acting FSH groups [19/35 (54.3%), 5/28 (17.9%), 5/35 (14.3%); P<0.01]. In conclusion, minimal-handling interventions used in the present study to increase embryo production in bison were not effective, likely as a result of the timing, frequency, and duration of superstimulation. A random start resulted in greater COC collection than collection 4 days after ovarian synchronization, and embryo production rates were greater in non-superstimulated bison.
This work was supported by Parks Canada and Saskatchewan ADF. Antrin products donated by Kyoritsu Seiyaku Corp., Japan.
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22
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Sumiya Y, Maeda S. Paths of chemical reactions and their networks: from geometry optimization to automated search and systematic analysis. Chemical Modelling 2019. [DOI: 10.1039/9781788015868-00028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
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23
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Watanabe KI, Aogi K, Kitada M, Sangai T, Ohtani S, Aruga T, Kawaguchi H, Fujisawa T, Maeda S, Morimoto T, Morita S, Masuda N, Toi M, Ohno S. Clinical efficacy of eribulin as first- or second-line treatment for patients with recurrent HER2-negative breast cancer: A phase II randomized study (JBCRG-19). Ann Oncol 2018. [DOI: 10.1093/annonc/mdy272.307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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24
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Sakai K, Maeda S, Yamada Y, Chambers JK, Uchida K, Nakayama H, Yonezawa T, Matsuki N. Cover Image, Volume 16, Issue 3. Vet Comp Oncol 2018. [DOI: 10.1111/vco.12352] [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: 11/29/2022]
Affiliation(s)
- K. Sakai
- Department of Veterinary Clinical Pathobiology; Graduate School of Agricultural and Life Sciences, The University of Tokyo; Tokyo Japan
| | - S. Maeda
- Department of Veterinary Clinical Pathobiology; Graduate School of Agricultural and Life Sciences, The University of Tokyo; Tokyo Japan
| | - Y. Yamada
- Department of Veterinary Clinical Pathobiology; Graduate School of Agricultural and Life Sciences, The University of Tokyo; Tokyo Japan
| | - J. K. Chambers
- Department of Veterinary Pathology; Graduate School of Agricultural and Life Sciences, The University of Tokyo; Tokyo Japan
| | - K. Uchida
- Department of Veterinary Pathology; Graduate School of Agricultural and Life Sciences, The University of Tokyo; Tokyo Japan
| | - H. Nakayama
- Department of Veterinary Pathology; Graduate School of Agricultural and Life Sciences, The University of Tokyo; Tokyo Japan
| | - T. Yonezawa
- Department of Veterinary Clinical Pathobiology; Graduate School of Agricultural and Life Sciences, The University of Tokyo; Tokyo Japan
| | - N. Matsuki
- Department of Veterinary Clinical Pathobiology; Graduate School of Agricultural and Life Sciences, The University of Tokyo; Tokyo Japan
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25
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Maeda S, Goya M, Nakagama S, Hanyu Y, Enomoto Y, Lee K, Shiohira S, Sekigawa M, Yagishita A, Takahashi Y, Kawabata M, Hirao K. P6643Utility of ripple mapping localize the site of origin and to detect real substrate during catheter ablation of ventricular arrhythmia. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6643] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- S Maeda
- Tokyo Medical and Dental University, Cardiovascular Medicine, Tokyo, Japan
| | - M Goya
- Tokyo Medical and Dental University, Cardiovascular Medicine, Tokyo, Japan
| | - S Nakagama
- Tokyo Medical and Dental University, Cardiovascular Medicine, Tokyo, Japan
| | - Y Hanyu
- Tokyo Medical and Dental University, Cardiovascular Medicine, Tokyo, Japan
| | - Y Enomoto
- Tokyo Medical and Dental University, Cardiovascular Medicine, Tokyo, Japan
| | - K Lee
- Tokyo Medical and Dental University, Cardiovascular Medicine, Tokyo, Japan
| | - S Shiohira
- Tokyo Medical and Dental University, Cardiovascular Medicine, Tokyo, Japan
| | - M Sekigawa
- Tokyo Medical and Dental University, Cardiovascular Medicine, Tokyo, Japan
| | - A Yagishita
- Tokyo Medical and Dental University, Cardiovascular Medicine, Tokyo, Japan
| | - Y Takahashi
- Tokyo Medical and Dental University, Cardiovascular Medicine, Tokyo, Japan
| | - M Kawabata
- Tokyo Medical and Dental University, Cardiovascular Medicine, Tokyo, Japan
| | - K Hirao
- Tokyo Medical and Dental University, Cardiovascular Medicine, Tokyo, Japan
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Nucifora G, Muser D, Santangeli P, Castro S, Maeda S, Casado Arroyo R, Liuba I, Benhayon D, Sadek M, Desjardins B, Garcia F, Callans D, Frankel D, Selvanayagam J, Marchlinski F. P267Risk stratification of patients with apparently idiopathic premature ventricular contractions: data from a multicenter international cardiac magnetic resonance registry. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.p267] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- G Nucifora
- University Hospital of South Manchester NHS Foundation Trust, Manchester, United Kingdom
| | - D Muser
- Cardiothoracic Department, University Hospital “Santa Maria della Misericordia”, Udine, Italy
| | - P Santangeli
- University of Pennsylvania, Philadelphia, United States of America
| | - S Castro
- University of Pennsylvania, Philadelphia, United States of America
| | - S Maeda
- Tokyo Medical and Dental University, Tokyo, Japan
| | | | - I Liuba
- Linkoping University Hospital, Linkoping, Sweden
| | - D Benhayon
- Memorial Healthcare System, Hollywood, United States of America
| | - M Sadek
- University of Ottawa Heart Institute, Ottawa, Canada
| | - B Desjardins
- University of Pennsylvania, Philadelphia, United States of America
| | - F Garcia
- University of Pennsylvania, Philadelphia, United States of America
| | - D Callans
- University of Pennsylvania, Philadelphia, United States of America
| | - D Frankel
- University of Pennsylvania, Philadelphia, United States of America
| | - J Selvanayagam
- Flinders Medical Centre and Flinders University, Adelaide, Australia
| | - F Marchlinski
- University of Pennsylvania, Philadelphia, United States of America
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Tagawa K, Ra SG, Kumagai H, Yoshikawa T, Yoshida Y, Takekoshi K, Sakai S, Miyauchi T, Maeda S. Effects of resistance training on arterial compliance and plasma endothelin-1 levels in healthy men. Physiol Res 2018; 67:S155-S166. [PMID: 29947536 DOI: 10.33549/physiolres.933818] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Arterial compliance (AC) is an index of the elasticity of large arteries. Endothelial dysfunction has been reported to result in reduced arterial compliance, which represents increased arterial stiffness. A reduction in AC is elicited by high-intensity resistance training, however the mechanisms are obscure. Because a single bout of resistance exercise causes a transient increase in circulating plasma endothelin-1 in humans, some vasoconstrictors may play a role in the mechanisms. The present study aimed to investigate whether resistance training-induced decrease in AC is associated with changes in circulating vasoconstrictors levels in young men. Young sedentary men were assigned to control (n=5) or training (n=9) groups. The training group performed four-week high-intensity resistance training (weight training exercise; three sessions/week). We measured AC and plasma levels of endothelin-1, angiotensin II, and norepinephrine before and after intervention. Resistance training significantly decreased AC, whereas the changes in plasma levels of neither endothelin-1, nor angiotensin II, nor norepinephrine were significantly different between the control and the training groups. Moreover, we found no significant correlations between changes in circulating plasma levels (endothelin-1, angiotensin II, and norepinephrine) and in the AC. Despite of no alteration of the resting circulating plasma levels (endothelin-1, etc.), we cannot exclude a possibility that the tissue/local concentrations of vasoconstrictors (endothelin-1, etc.) around the vessels might be increased and also involved in a reduction of AC in the training group. Taken together, the present results suggest that circulating vasoconstrictors (endothelin-1, etc.) in plasma are not involved in a reduction in AC by the resistance training.
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Affiliation(s)
- K Tagawa
- Graduate School of Comprehensive Human Sciences, University of Tsukuba, Japan, Division of Sports Medicine, Faculty of Health and Sport Science, University of Tsukuba, Japan.
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Higuchi H, Maeda S, Ishii-Maruhama M, Honda-Wakasugi Y, Yabuki-Kawase A, Miyawaki T. Intellectual disability is a risk factor for delayed emergence from total intravenous anaesthesia. J Intellect Disabil Res 2018; 62:217-224. [PMID: 29193472 DOI: 10.1111/jir.12448] [Citation(s) in RCA: 5] [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] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 09/28/2017] [Accepted: 10/17/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND Previous studies have suggested that ID influences the depth of general anaesthesia (GA) and delays emergence from GA. In this retrospective cohort study, we investigated whether ID affects the time taken to emerge from GA. METHODS We selected dental patients who underwent GA at the Department of Dental Anaesthesiology, Okayama University Hospital, using predefined inclusion and exclusion criteria, before dividing the selected participants into ID and non-ID (control) groups. Relevant data were collected from electronic anaesthesia records. Emergence time, the time from the discontinuation of propofol and remifentanil to tracheal extubation, was recorded for each patient. We compared the data of the ID group and control group. The association between ID and the emergence time was tested for statistical significance. Multivariate linear regression analysis was used to control for confounders. RESULTS A total of 97 cases (control = 50, ID = 47) were included in the study. The emergence time was significantly longer in the ID group (ID group: 15.8 ± 6.6 min, control group: 10.8 ± 3.6 min). The ID group included more men and lower propofol and remifentanil infusion rates. The treatment time was longer, and the mean bispectral index was lower in the ID group. Sevoflurane inhalation was used only for anaesthesia induction in the ID group. In the multivariate linear regression analysis, ID was found to be significantly associated with a longer emergence time. CONCLUSION Our results suggest that ID is associated with a longer emergence time from GA.
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Affiliation(s)
- H Higuchi
- Department of Dental Anaesthesiology, Okayama University Hospital, Okayama, Japan
| | - S Maeda
- Department of Dental Anaesthesiology, Okayama University Hospital, Okayama, Japan
| | - M Ishii-Maruhama
- Department of Dental Anaesthesiology and Special Care Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Y Honda-Wakasugi
- Department of Dental Anaesthesiology and Special Care Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - A Yabuki-Kawase
- Center for Promotion of Dental Education and International Collaboration, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - T Miyawaki
- Department of Dental Anaesthesiology and Special Care Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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Sakai K, Maeda S, Yamada Y, Chambers JK, Uchida K, Nakayama H, Yonezawa T, Matsuki N. Association of tumour-infiltrating regulatory T cells with adverse outcomes in dogs with malignant tumours. Vet Comp Oncol 2018; 16:330-336. [DOI: 10.1111/vco.12383] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 12/02/2017] [Accepted: 12/13/2017] [Indexed: 12/14/2022]
Affiliation(s)
- K. Sakai
- Department of Veterinary Clinical Pathobiology; Graduate School of Agricultural and Life Sciences, The University of Tokyo; Tokyo Japan
| | - S. Maeda
- Department of Veterinary Clinical Pathobiology; Graduate School of Agricultural and Life Sciences, The University of Tokyo; Tokyo Japan
| | - Y. Yamada
- Department of Veterinary Clinical Pathobiology; Graduate School of Agricultural and Life Sciences, The University of Tokyo; Tokyo Japan
| | - J. K. Chambers
- Department of Veterinary Pathology; Graduate School of Agricultural and Life Sciences, The University of Tokyo; Tokyo Japan
| | - K. Uchida
- Department of Veterinary Pathology; Graduate School of Agricultural and Life Sciences, The University of Tokyo; Tokyo Japan
| | - H. Nakayama
- Department of Veterinary Pathology; Graduate School of Agricultural and Life Sciences, The University of Tokyo; Tokyo Japan
| | - T. Yonezawa
- Department of Veterinary Clinical Pathobiology; Graduate School of Agricultural and Life Sciences, The University of Tokyo; Tokyo Japan
| | - N. Matsuki
- Department of Veterinary Clinical Pathobiology; Graduate School of Agricultural and Life Sciences, The University of Tokyo; Tokyo Japan
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Choi Y, Akazawa N, Nakamura Y, Park I, Tokuyama K, Maeda S. The effects of bright light exposure at night on circadian rhythms and energy metabolism. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.182] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Inoue T, Nishihira M, Araki O, Karube Y, Maeda S, Kobayashi S, Chida M. P3.02-064 Epidermal Growth Factor Receptor Gene Mutation in Pleural Lavage Cytology Findings of Primary Lung Adenocarcinoma Cases. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1593] [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: 11/29/2022]
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Inoue T, Nakazato Y, Nishihira M, Araki O, Karube Y, Maeda S, Kobayashi S, Chida M. P1.02-018 Number of Cancer Cells in Lung Adenocarcinoma Specimen – Correlation with Noguchi's Classification, WHO Pathologic Type, and Prognosis. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.750] [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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Maeda S, Nakamura T. Decalcification of a Heavily Calcified Common Femoral Artery and its Bifurcation with a Cavitron Ultrasonic Surgical Aspirator. EJVES Short Rep 2017; 34:5-8. [PMID: 28856324 PMCID: PMC5576089 DOI: 10.1016/j.ejvssr.2016.09.003] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 09/11/2016] [Accepted: 09/14/2016] [Indexed: 11/30/2022] Open
Abstract
Introduction Surgical endarterectomy is the preferred method for treating occlusive disease of the common femoral artery (CFA). However, endarterectomy is not always straightforward in cases with heavily calcified plaque. To overcome this limitation, a new method for decalcification, which utilizes a Cavitron ultrasonic surgical aspirator (CUSA) has been developed. Report The method involves full exposure of the calcified lesion. Following an arteriotomy, protruding calcification is removed using the CUSA, taking care to avoid vessel perforation. Preservation of the medial calcified layer can be accomplished by the accurate control provided by the device, which enables smooth termination in the distal area of the normal wall and does not require a tacking suture. A total of 12 patients underwent decalcification of 13 common femoral artery (CFA) lesions using CUSA with vein patch angioplasty. Concomitant profundaplasty was performed in five cases. The only intra-operative complication was perforation of the arterial wall in one patient, while another had a wound infection that required reintervention. Discussion Decalcification of a heavily calcified CFA with CUSA appears to be feasible, although long-term follow-up examinations are warranted. Surgical endarterectomy for a heavily calcified common femoral artery and its bifurcation can be challenging. The authors have developed a new method for decalcification that utilizes a Cavitron ultrasonic surgical aspirator. An important advantage of this procedure is that there is no need for tacking sutures.
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Affiliation(s)
- S Maeda
- Division of Vascular Surgery, Japan Organization of Occupational Health and Safety, Osaka Rosai Hospital, Sakai, Japan
| | - T Nakamura
- Division of Vascular Surgery, Japan Organization of Occupational Health and Safety, Osaka Rosai Hospital, Sakai, Japan
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Maeda S, Tsuboi M, Sakai K, Ohno K, Fukushima K, Kanemoto H, Hiyoshi-Kanemoto S, Goto-Koshino Y, Chambers JK, Yonezawa T, Uchida K, Matsuki N. Endoscopic Cytology for the Diagnosis of Chronic Enteritis and Intestinal Lymphoma in Dogs. Vet Pathol 2017; 54:595-604. [DOI: 10.1177/0300985817705175] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Although cytology is a rapid diagnostic procedure in dogs, the cytologic criteria of endoscopic biopsies for chronic enteritis and intestinal lymphoma are not well defined. An immediate diagnosis using cytology would benefit patients by enabling prompt initiation of therapy. The objective of this study was to investigate the correlation between the results of endoscopic cytology and histopathology. In this study, 167 dogs with clinical signs of chronic gastrointestinal disease were included. On the basis of histopathology, the following diagnoses were determined: lymphocytic-plasmacytic enteritis in 93 dogs; eosinophilic enteritis in 5 dogs; small cell intestinal lymphoma in 45 dogs; and large cell intestinal lymphoma in 24 dogs. Two clinical pathologists retrospectively evaluated the endoscopic cytology of squash-smear preparations. The cytologic diagnoses of inflammation, small cell lymphoma, and large cell lymphoma were based on the severity of lymphocyte infiltration, the size of infiltrated lymphocytes, and eosinophil/mast cell infiltration. The clinical severity score was significantly increased along with the degree of lymphocyte infiltration evaluated by cytology. The cytologic diagnosis was in complete agreement with the histopathologic diagnosis in 136 of 167 (81.4%) cases. For the differentiation between enteritis and lymphoma, endoscopic cytology had a sensitivity of 98.6%, a specificity of 73.5%, a positive predictive value of 72.3%, and a negative predictive value of 98.6%. The log-rank test and Cox regression analysis showed that the results of cytology predicted the prognosis. These results suggest that endoscopic cytology is a useful technique to aid diagnosis of intestinal inflammation and lymphoma in dogs.
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Affiliation(s)
- S. Maeda
- Department of Veterinary Clinical Pathobiology, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
| | - M. Tsuboi
- Department of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
| | - K. Sakai
- Department of Veterinary Clinical Pathobiology, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
| | - K. Ohno
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
| | - K. Fukushima
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
| | - H. Kanemoto
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
| | - S. Hiyoshi-Kanemoto
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
| | - Y. Goto-Koshino
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
| | - J. K. Chambers
- Department of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
| | - T. Yonezawa
- Department of Veterinary Clinical Pathobiology, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
| | - K. Uchida
- Department of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
| | - N. Matsuki
- Department of Veterinary Clinical Pathobiology, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
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Sakamoto M, Shibata S, Asahina R, Yamazoe K, Kamishina H, Ishigaki K, Asano K, Maeda S. Contrast-enhanced ultrasonographic findings of hepatic arterioportal fistulas in a dog. J Small Anim Pract 2017; 58:419. [PMID: 28466480 DOI: 10.1111/jsap.12687] [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] [Received: 03/01/2016] [Revised: 08/31/2016] [Accepted: 10/05/2016] [Indexed: 11/27/2022]
Affiliation(s)
- M Sakamoto
- Department of Veterinary Medicine, Faculty of Applied -Biological Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - S Shibata
- Department of Veterinary Medicine, Faculty of Applied -Biological Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - R Asahina
- Department of Veterinary Medicine, Faculty of Applied -Biological Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - K Yamazoe
- Department of Veterinary Medicine, Faculty of Applied -Biological Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - H Kamishina
- Department of Veterinary Medicine, Faculty of Applied -Biological Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - K Ishigaki
- Laboratory of Veterinary Surgery, Department of Veterinary Medicine, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, 252-0880, Japan
| | - K Asano
- Laboratory of Veterinary Surgery, Department of Veterinary Medicine, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, 252-0880, Japan
| | - S Maeda
- Department of Veterinary Medicine, Faculty of Applied -Biological Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
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Kosaki K, Kamijo-Ikemori A, Sugaya T, Tanahashi K, Sawano Y, Akazawa N, Ra SG, Kimura K, Shibagaki Y, Maeda S. Effect of habitual exercise on urinary liver-type fatty acid-binding protein levels in middle-aged and older adults. Scand J Med Sci Sports 2017; 28:152-160. [DOI: 10.1111/sms.12867] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/24/2017] [Indexed: 01/01/2023]
Affiliation(s)
- K. Kosaki
- Graduate School of Comprehensive Human Sciences; University of Tsukuba; Tsukuba Ibaraki Japan
| | - A. Kamijo-Ikemori
- Division of Nephrology and Hypertension; Department of Internal Medicine; St. Marianna University School of Medicine; Kawasaki Kanagawa Japan
- Department of Anatomy; St. Marianna University School of Medicine; Kawasaki Kanagawa Japan
| | - T. Sugaya
- Division of Nephrology and Hypertension; Department of Internal Medicine; St. Marianna University School of Medicine; Kawasaki Kanagawa Japan
- CMIC Company, Limited; Bunkyo Tokyo Japan
| | - K. Tanahashi
- Graduate School of Comprehensive Human Sciences; University of Tsukuba; Tsukuba Ibaraki Japan
| | - Y. Sawano
- Graduate School of Comprehensive Human Sciences; University of Tsukuba; Tsukuba Ibaraki Japan
| | - N. Akazawa
- Faculty of Health and Sport Sciences; University of Tsukuba; Tsukuba Ibaraki Japan
| | - S.-G. Ra
- Faculty of Sports and Health Science; Fukuoka University; Fukuoka Japan
| | - K. Kimura
- JCHO Tokyo Takanawa Hospital; Minato Tokyo Japan
| | - Y. Shibagaki
- Division of Nephrology and Hypertension; Department of Internal Medicine; St. Marianna University School of Medicine; Kawasaki Kanagawa Japan
| | - S. Maeda
- Faculty of Health and Sport Sciences; University of Tsukuba; Tsukuba Ibaraki Japan
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Osuka Y, Fujita S, Kitano N, Kosaki K, Seol J, Sawano Y, Shi H, Fujii Y, Maeda S, Okura T, Kobayashi H, Tanaka K. Effects of Aerobic and Resistance Training Combined with Fortified Milk on Muscle Mass, Muscle Strength, and Physical Performance in Older Adults: A Randomized Controlled Trial. J Nutr Health Aging 2017; 21:1349-1357. [PMID: 29188900 DOI: 10.1007/s12603-016-0864-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [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] [Indexed: 01/07/2023]
Abstract
OBJECTIVES Fortified milk and resistance training (RT) increase muscle mass, muscle strength, and physical performance in older adults, but it remains unclear whether RT combined with aerobic training (AT) would have stronger effects on these outcomes. The purpose of this study was to examine the effects of aerobic and resistance training (ART) combined with fortified milk consumption on muscle mass, muscle strength, and physical performance in older adults. DESIGN Open-labeled randomized controlled trial. SETTING University of Tsukuba. PARTICIPANTS Fifty-six older adults aged 65-79. INTERVENTION Participants were randomly allocated into resistance training (RT + fortified milk, n = 28) and aerobic and resistance training (ART + fortified milk, n = 28) groups. All participants attended supervised exercise programs twice a week at University of Tsukuba and ingested fortified milk every day for 12 weeks. Skeletal muscle index ([SMI]: appendicular lean mass/height2) was assessed using dual-energy X-ray absorptiometry as a muscle mass measure. One-repetition maximum strength was measured using four kinds of resistance training machines (chest press, leg extension, leg curl, and leg press) as muscle strength measures. Sit-to-stand and arm curl tests were also assessed as physical performance measures. MEASUREMENTS The primary measurements were muscle mass and strength. The secondary outcomes were physical performance, blood samples, habitual diet, habitual physical activity, and medication use. RESULTS Although the muscle strength and physical performance measures significantly improved in both groups, SMI significantly improved in only the RT group. There was no significant difference in the change in SMI and muscle strength measures between the two groups. However, the change in sit-to-stand and arm curl measures in the ART group were significantly higher than those in the RT group. CONCLUSIONS These results suggest that AT before RT combined with fortified milk consumption has similar effects on skeletal muscle mass and strength compared with RT alone, but it may be a more useful strategy to improve physical performance in older adults. Although the mechanism of our intervention is uncertain, our program would be an effective prevention for sarcopenia in older adults.
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Affiliation(s)
- Y Osuka
- Yosuke Osuka, Research Team for Promoting Independence of the Elderly, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan,
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Tezuka S, Ueno M, Ohkawa S, Hirotani A, Totsuka Y, Moriya S, Kobayashi S, Morimoto M, Nakamura Y, Miyagi Y, Maeda S. 255P Predictive value of ERCC1, ERCC2, ERCC4, and glutathione S-transferase P1 for FOLFIRINOX in unresectable pancreatic cancer. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw582.036] [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: 11/12/2022] Open
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Takenami T, Maeda S, Karasawa H, Mochizuki Y, Aizawa T, Jun S, Musha H, Morikawa T, Nakagawa K, Hayashi H, Motoi F, Naitoh T, Unno M. 46P Identification of novel biomarkers distinguishing pancreatic head cancer from distal cholangiocarcinoma discovered by proteomics analysis. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw574.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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40
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Jun S, Karasawa H, Suzuki T, Nakayama S, Katagiri M, Maeda S, Ohnuma S, Motoi F, Naitoh T, Unno M. 34P The expression and functional role of Cripto-1 in human colorectal cancer. Ann Oncol 2016. [DOI: 10.1016/s0923-7534(21)00194-0] [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] Open
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Jun S, Karasawa H, Suzuki T, Nakayama S, Katagiri M, Maeda S, Ohnuma S, Motoi F, Naitoh T, Unno M. 34P The expression and functional role of Cripto-1 in human colorectal cancer. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw574.007] [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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Goswami S, Yee SW, Xu F, Sridhar SB, Mosley JD, Takahashi A, Kubo M, Maeda S, Davis RL, Roden DM, Hedderson MM, Giacomini KM, Savic RM. A Longitudinal HbA1c Model Elucidates Genes Linked to Disease Progression on Metformin. Clin Pharmacol Ther 2016; 100:537-547. [PMID: 27415606 PMCID: PMC5534241 DOI: 10.1002/cpt.428] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 06/20/2016] [Accepted: 06/22/2016] [Indexed: 12/20/2022]
Abstract
One-third of type-2 diabetic patients respond poorly to metformin. Despite extensive research, the impact of genetic and nongenetic factors on long-term outcome is unknown. In this study we combine nonlinear mixed effect modeling with computational genetic methodologies to identify predictors of long-term response. In all, 1,056 patients contributed their genetic, demographic, and long-term HbA1c data. The top nine variants (of 12,000 variants in 267 candidate genes) accounted for approximately one-third of the variability in the disease progression parameter. Average serum creatinine level, age, and weight were determinants of symptomatic response; however, explaining negligible variability. Two single nucleotide polymorphisms (SNPs) in CSMD1 gene (rs2617102, rs2954625) and one SNP in a pharmacologically relevant SLC22A2 gene (rs316009) influenced disease progression, with minor alleles leading to less and more favorable outcomes, respectively. Overall, our study highlights the influence of genetic factors on long-term HbA1c response and provides a computational model, which when validated, may be used to individualize treatment.
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Affiliation(s)
- S Goswami
- University of California, San Francisco, San Francisco, California, USA
| | - S W Yee
- University of California, San Francisco, San Francisco, California, USA
| | - F Xu
- Kaiser Permanente Northern California, Oakland, California, USA
| | - S B Sridhar
- Kaiser Permanente Northern California, Oakland, California, USA
| | - J D Mosley
- Vanderbilt University, Nashville, Tennessee, USA
| | - A Takahashi
- RIKEN Institute, Center for Genomic Medicine, Saitama, Japan
| | - M Kubo
- RIKEN Institute, Center for Genomic Medicine, Saitama, Japan
| | - S Maeda
- RIKEN Institute, Center for Genomic Medicine, Saitama, Japan
| | - R L Davis
- Kaiser Permanente Georgia, Atlanta, Georgia, USA
- Center for Biomedical Informatics, University of Tennessee Health Sciences Center, Memphis, Tennessee, USA
| | - D M Roden
- Vanderbilt University, Nashville, Tennessee, USA
| | - M M Hedderson
- Kaiser Permanente Northern California, Oakland, California, USA
| | - K M Giacomini
- University of California, San Francisco, San Francisco, California, USA.
| | - R M Savic
- University of California, San Francisco, San Francisco, California, USA.
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Takaya K, Higuchi H, Ishii-Maruhama M, Yabuki-Kawase A, Honda Y, Tomoyasu Y, Maeda S, Miyawaki T. Capnography Prevents Hypoxia during Sedation for Dental Treatment: A Randomized Controlled Trial. JDR Clin Trans Res 2016; 2:158-167. [DOI: 10.1177/2380084416674670] [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] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Intravenous sedation is useful for dental treatment in patients with intellectual disabilities. However, it is often necessary to manage such patients with deep sedation because their cooperation cannot be obtained. During deep sedation, undetected hypoventilation can lead to severe complications, such as hypoxia. Recently, capnographic monitoring has been advocated as a useful technique for preventing hypoxia during sedation. This randomized control trial evaluated whether the use of capnography reduces the incidence of hypoxia during the deep sedation of patients for dental treatment. This study involved patients with intellectual disabilities who underwent dental treatment under sedation. The subjects were randomized to the intervention group (I-group) or control group (C-group). All of the patients underwent routine monitoring, as well as bispectral index (BIS) and capnographic monitoring; however, only an independent observer had access to the patients’ capnographic data during the dental procedures. Sedation was maintained at a BIS of 50 to 70 by administration of propofol. In the I-group, the independent observer signaled to the dental anesthesiologist if the capnogram indicated that the patient had been suffering from alveolar hypoventilation or apnea for >15 s. In the C-group, the observer signaled to the dental anesthesiologist if the capnogram indicated that the patient had been suffering from alveolar hypoventilation or apnea for >60 s. In both groups, the dental anesthesiologists responded to the signals using appropriate airway management strategies. The primary endpoint of this study was the incidence of hypoxia during dental treatment, which was defined as oxygen saturation of <95%. Hypoxemic episodes occurred in 13.4% and 34.8% of cases in the I-group and C-group, respectively. The incidence of hypoxia was significantly lower in the I-group. These results suggest that capnographic monitoring during deep sedation for dental treatment prevents hypoxemic episodes by allowing the early detection of hypoventilation. Knowledge Transfer Statement: This is the first randomized controlled trial to examine whether the use of capnography reduces the incidence of hypoxia during deep sedation for dental treatment. The findings of this study can be used by clinicians to aid decision-making regarding dental sedation standards at individual clinics. Moreover, they can be used as high-level evidence during the production or updating of clinical guidelines for dental sedation by leading associations.
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Affiliation(s)
- K. Takaya
- Department of Dental Anesthesiology and Special Care Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - H. Higuchi
- Department of Dental Anesthesiology, Okayama University Hospital, Okayama, Japan
| | - M. Ishii-Maruhama
- Department of Dental Anesthesiology and Special Care Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - A. Yabuki-Kawase
- Center for Promotion of Dental Education and International Collaboration, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Y. Honda
- Department of Dental Anesthesiology, Okayama University Hospital, Okayama, Japan
| | - Y. Tomoyasu
- Department of Dental Anesthesiology and Special Care Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - S. Maeda
- Department of Dental Anesthesiology, Okayama University Hospital, Okayama, Japan
| | - T. Miyawaki
- Department of Dental Anesthesiology and Special Care Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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Ha DT, Yamazaki K, Wang Y, Alcamí M, Maeda S, Kono H, Martín F, Kukk E. Fragmentation network of doubly charged methionine: Interpretation using graph theory. J Chem Phys 2016; 145:094302. [DOI: 10.1063/1.4962061] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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)
- D. T. Ha
- Department of Physics and Astronomy, University of Turku, 20014 Turku, Finland
| | - K. Yamazaki
- Department of Chemistry, Graduate School of Science, Tohoku University, 980-8578 Sendai, Japan
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
| | - Y. Wang
- Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Instituto Madrileño de Estudios Avanzados en Nanociencia, Cantoblanco, 28049 Madrid, Spain
| | - M. Alcamí
- Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Instituto Madrileño de Estudios Avanzados en Nanociencia, Cantoblanco, 28049 Madrid, Spain
| | - S. Maeda
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
| | - H. Kono
- Department of Chemistry, Graduate School of Science, Tohoku University, 980-8578 Sendai, Japan
| | - F. Martín
- Departamento de Química, Módulo 13, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Instituto Madrileño de Estudios Avanzados en Nanociencia, Cantoblanco, 28049 Madrid, Spain
- Condensed Matter Physics Center, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - E. Kukk
- Department of Physics and Astronomy, University of Turku, 20014 Turku, Finland
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Tanno M, Horiuchi T, Nakajima I, Maeda S, Igarashi M, Yamada H. Age-related changes in cortical and trabecular bone mineral status: A quantitative CT study in lumbar vertebrae. Acta Radiol 2016; 42:15-9. [PMID: 11167325 DOI: 10.1080/028418501127346396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Purpose: To investigate the age and sex dependence of the bone mineral status of human lumbar vertebrae with special regard to differences between cortical and trabecular bone. Material and Methods: The study group comprised 125 normal Japanese healthy volunteers (54 males and 71 females), and was subdivided into adult male and female groups (subjects younger than 40 years), intermediate male and female groups (ages ranging between 41 and 64 years) and old male and female groups (subjects older than 65 years). The cortical bone mineral status was estimated using a single-energy quantitative CT (SE-QCT) technique, whereas trabecular bone mineral density (BMD) was estimated using a dual-energy (DE-QCT) technique. Results: A considerable gender difference in the age-related cortical bone status was found. There was a significant reduction of the mean values of the cortical volume and BMD in the old female group compared with those obtained in the old male group. Conclusion: The results suggest that in men, cortical and trabecular bone volume decrease very little with age. In women, cortical volume and BMD and trabecular BMD decrease with age while trabecular bone volume does not. The study showed that all variables had higher values in men than in women and that the difference increased with age.
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Affiliation(s)
- M Tanno
- Department of Radiology, Tokyo Metropolitan Geriatric Hospital, Japan
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Sakimura C, Eguchi S, Yamanouchi K, Minami S, Kuba S, Hayashida N, Soyama A, Hidaka M, Takatsuki M, Maeda S, Kuroki T. The first report of the thyroid function of haemophilic patients with HIV/HCV co-infection in Japan. Haemophilia 2016; 22:e130-3. [PMID: 27167093 DOI: 10.1111/hae.12930] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/21/2016] [Indexed: 11/28/2022]
Abstract
INTRODUCTION A high incidence of thyroid dysfunction is reported in patients with HIV or HCV mono-infection. We have conducted a periodic medical examination including the thyroid function for haemophilic patients with HIV/HCV co-infection due to contaminated blood products. METHODS We examined the thyroid function (as assessed by the FT3, FT4 and TSH levels) in 45 haemophilic patients, including thyroglobulin and auto-antibody, antithyroglobulin antibody, antithyroid peroxidase antibody and anti-TSH receptor antibody in 28 patients. RESULTS All the patients were males (median age: 42 years; range: 29-66). The median values of thyroid function were FT3 3.36 pg mL(-1) , FT4 1.125 ng mL(-1) and TSH 1.65 μIU mL(-1) . Five patients (11.1%) had high TSH levels. In 28 patients in whom the presence of auto-antibodies was examined, the median age was 47 years of age. The median value of thyroglobulin was 16 ng mL(-1) and two patients showed high levels of thyroglobulin. The presence of anti-TSH receptor antibody of all the patients was negative, but one patient (3.5%) was positive of antithyroid peroxidase antibody and antithyroglobulin antibody. CONCLUSIONS Since 0.68-3.6% of the general healthy population is reported to show hypothyroidism, our data showed that the proportion of hypothyroidism in haemophilic patients with HIV/HCV co-infection was more frequent than that of the normal population.
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Affiliation(s)
- C Sakimura
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - S Eguchi
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - K Yamanouchi
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - S Minami
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - S Kuba
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - N Hayashida
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - A Soyama
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - M Hidaka
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - M Takatsuki
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - S Maeda
- National Hospital Nagasaki Medical Center, Omura, Japan
| | - T Kuroki
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
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Ueda H, Halder SK, Matsunaga H, Sasaki K, Maeda S. Neuroprotective impact of prothymosin alpha-derived hexapeptide against retinal ischemia-reperfusion. Neuroscience 2016; 318:206-18. [PMID: 26779836 DOI: 10.1016/j.neuroscience.2016.01.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [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: 07/29/2015] [Revised: 12/17/2015] [Accepted: 01/05/2016] [Indexed: 01/13/2023]
Abstract
Prothymosin alpha (ProTα) has robustness roles against brain and retinal ischemia or serum-starvation stress. In the ProTα sequence, the active core 30-amino acid peptide/P30 (a.a.49-78) is necessary for the original neuroprotective actions against ischemia. Moreover, the 9-amino acid peptide sequence/P9 (a.a.52-60) in P30 still shows neuroprotective activity against brain and retinal ischemia, though P9 is less potent than P30. As the previous structure-activity relationship study for ProTα may not be enough, the possibility still exists that any sequence smaller than P9 retains potent neuroprotective activity. When different P9- and P30-related peptides were intravitreally injected 24h after retinal ischemia in mice, the 6-amino acid peptide/P6 (NEVDEE, a.a.51-56) showed potent protective effects against ischemia-induced retinal functional deficits, which are equipotent to the level of P30 peptide in electroretinography (ERG) and histological damage in Hematoxylin and Eosin (HE) staining. Further studies using ERG and HE staining suggested that intravitreal or intravenous (i.v.) injection with modified P6 peptide/P6Q (NEVDQE) potently inhibited retinal ischemia-induced functional and histological damage. In an immunohistochemical analysis, the ischemia-induced loss of retinal ganglion, bipolar, amacrine and photoreceptor cells were inhibited by a systemic administration with P6Q peptide 24h after the ischemic stress. In addition, systemic post-treatment with P6Q peptide significantly inhibited retinal ischemia-induced microglia and astrocyte activation in terms of increased ionized calcium-binding adaptor molecule 1 (Iba-1) and glial fibrillary acidic protein (GFAP) intensity, respectively, as well as their morphological changes, increased number and migration. Thus, this study demonstrates the therapeutic significance of modified P6 peptide P6Q (NEVDQE) derived from 6-amino acid peptide (P6) in ProTα against ischemic damage.
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Affiliation(s)
- H Ueda
- Department of Pharmacology and Therapeutic Innovation, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8521, Japan.
| | - S K Halder
- Department of Pharmacology and Therapeutic Innovation, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8521, Japan
| | - H Matsunaga
- Department of Pharmacology and Therapeutic Innovation, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8521, Japan
| | - K Sasaki
- Department of Pharmacology and Therapeutic Innovation, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8521, Japan
| | - S Maeda
- Department of Pharmacology and Therapeutic Innovation, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8521, Japan
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Zempo-Miyaki A, Fujie S, Sato K, Hasegawa N, Sanada K, Maeda S, Hamaoka T, Iemitsu M. Elevated pentraxin 3 level at the early stage of exercise training is associated with reduction of arterial stiffness in middle-aged and older adults. J Hum Hypertens 2015; 30:521-6. [PMID: 26467819 DOI: 10.1038/jhh.2015.105] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Revised: 07/23/2015] [Accepted: 07/30/2015] [Indexed: 11/09/2022]
Abstract
Regular exercise improves aging-induced deterioration of arterial stiffness, and is associated with elevated production of pentraxin 3 (PTX3) and anti-inflammatory as well as anti-atherosclerotic effects. However, the time-dependent effect of exercise training on arterial stiffness and PTX3 production remains unclear. The purpose of this study was to investigate the time course of the association between the effects of training on the circulating PTX3 level and arterial stiffness in middle-aged and older adults. Thirty-two healthy Japanese subjects (66.2±1.3 year) were randomly divided into two groups: training (exercise intervention) and sedentary controls. Subjects in the training group completed 8 weeks of aerobic exercise training (60-70% peak oxygen uptake (VO2peak) for 45 min, 3 days per week); during the training period, we evaluated plasma PTX3 concentration and carotid-femoral pulse wave velocity (cfPWV) every 2 wk. cfPWV gradually declined over the 8-week training period, and was significantly reduced after 6 and 8 week of exercise intervention (P<0.05). Plasma PTX3 level was significantly increased after 4 weeks of the intervention (P<0.05). In addition, the exercise training-induced reduction in cfPWV was negatively correlated with the percent change in plasma PTX3 level after 6 week (r=-0.54, P<0.05) and 8 weeks (r=-0.51, P<0.05) of the intervention, but not correlated at 4 weeks. Plasma PTX3 level was elevated at the early stage of the exercise training intervention, and was subsequently associated with training-induced alteration of arterial stiffness in middle-aged and older adults.
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Affiliation(s)
- A Zempo-Miyaki
- Faculty of Sport and Health Sciences, Ryutsu Keizai University, Ibaraki, Japan
| | - S Fujie
- Faculty of Sport and Health Science, Ritsumeikan University, Shiga, Japan
| | - K Sato
- Faculty of Sport and Health Science, Ritsumeikan University, Shiga, Japan
| | - N Hasegawa
- Faculty of Sport and Health Science, Ritsumeikan University, Shiga, Japan
| | - K Sanada
- Faculty of Sport and Health Science, Ritsumeikan University, Shiga, Japan
| | - S Maeda
- Faculty of Health and Sport Sciences, University of Tsukuba, Ibaraki, Japan
| | - T Hamaoka
- Faculty of Sport and Health Science, Ritsumeikan University, Shiga, Japan
| | - M Iemitsu
- Faculty of Sport and Health Science, Ritsumeikan University, Shiga, Japan
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Nakamae S, Kobatake Y, Suzuki R, Tsukui T, Kato S, Yamato O, Sakai H, Urushitani M, Maeda S, Kamishina H. Accumulation and aggregate formation of mutant superoxide dismutase 1 in canine degenerative myelopathy. Neuroscience 2015; 303:229-40. [DOI: 10.1016/j.neuroscience.2015.06.066] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2015] [Revised: 06/12/2015] [Accepted: 06/30/2015] [Indexed: 01/08/2023]
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Maeda S, Ohno K, Fujiwara-Igarashi A, Uchida K, Tsujimoto H. Changes in Foxp3-Positive Regulatory T Cell Number in the Intestine of Dogs With Idiopathic Inflammatory Bowel Disease and Intestinal Lymphoma. Vet Pathol 2015; 53:102-12. [PMID: 26173451 DOI: 10.1177/0300985815591081] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Although regulatory T cells (Tregs) play an integral role in immunologic tolerance and the maintenance of intestinal homeostasis, their involvement in canine gastrointestinal diseases, including idiopathic inflammatory bowel disease (IBD) and intestinal lymphoma, remains unclear. Here we show altered numbers of forkhead box P3 (Foxp3)-positive Tregs in the intestine of dogs with IBD and intestinal lymphoma. IBD was diagnosed in 48 dogs; small cell intestinal lymphoma was diagnosed in 46 dogs; large cell intestinal lymphoma was diagnosed in 30 dogs; and 25 healthy beagles were used as normal controls. Foxp3-positive Tregs in the duodenal mucosa were examined by immunohistochemistry and immunofluorescence. Duodenal expression of interleukin-10 mRNA was quantified by real-time reverse transcription polymerase chain reaction. The number of Foxp3-positive lamina propria cells and the expression of interleukin-10 mRNA were significantly lower in dogs with IBD than in healthy dogs and dogs with intestinal lymphoma. The number of Foxp3-positive intraepithelial cells was higher in dogs with small cell intestinal lymphoma. Some large cell intestinal lymphoma cases had high numbers of Foxp3-positive cells, but the increase was not statistically significant. Double-labeling immunofluorescence showed that CD3-positive granzyme B-negative helper T cells expressed Foxp3. In small cell intestinal lymphoma cases, the overall survival of dogs with a high Treg density was significantly worse than that of dogs with a normal Treg density. These results suggest that a change in the number of Foxp3-positive Tregs contributes to the pathogenesis of canine IBD and intestinal lymphoma by disrupting mucosal tolerance and suppressing antitumor immunity, respectively.
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Affiliation(s)
- S Maeda
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
| | - K Ohno
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
| | - A Fujiwara-Igarashi
- Department of Veterinary Radiology, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - K Uchida
- Department of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
| | - H Tsujimoto
- Department of Veterinary Internal Medicine, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
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