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Murakami M, Watanabe Y, Edahiro A, Ohara Y, Obuchi S, Kawai H, Kim H, Fujiwara Y, Ihara K, Murakami M, Hirano H. Factors related to dissociation between objective and subjective masticatory function in Japanese community-dwelling elderly adults. J Oral Rehabil 2018; 45:598-604. [PMID: 29761827 DOI: 10.1111/joor.12650] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/09/2018] [Indexed: 11/28/2022]
Abstract
Clinicians' evaluations of older adults sometimes reveal inconsistencies between objective and subjective dental status. This study investigated which factors contribute both to good objective masticatory function (OMF) and the poor subjective masticatory function (SMF) that often becomes a clinical issue. Study participants included 635 elderly community-dwelling Japanese adults who underwent a comprehensive geriatric health examination in 2012. SMF was assessed with a question from the Kihon Checklist on eating difficulties (poor or good). OMF was assessed by a colour-changing gum (poor or good). Also investigated were age, sex, depressive symptoms, instrumental activities of daily living (I-ADLs), number of people who joined the participant at dinner, grip strength, usual walking speed, number of remaining teeth, number of functional teeth and their occlusal force. The group with good OMF and good SMF, defined as group 1, and the group with good OMF but poor SMF, group 2, were compared. Logistic regression analyses confirmed that the number of remaining and functional teeth participants had was statistically unrelated to differences between OMF and SMF. Instead, differences were related to stronger depressive symptoms (OR = 1.67, CI = 1.14-2.44), less ability to conduct I-ADL activities (OR = 0.73, CI = 0.59-0.91), slower usual walking speeds (OR = 0.18, CI = 0.06-0.58) and less occlusal force (OR = 0.99, CI = 0.99-1.00). Depressive symptoms, I-ADLs, and physical function are shown to be significantly related to divergence between objective and subjective masticatory function in elderly Japanese. This suggests that dissociations between objective and subjective dental evaluations of elderly adults indicate need for assessment of their mental and physical function.
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Murakami M, Odake K, Matsuda T, Manmi S, Takase M, Imura M, Toyama T. Bleeding Tendency with Platelet Dysfunction and Albinism. Thromb Haemost 2018. [DOI: 10.1055/s-0038-1649386] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
SummaryA Japanese boy, who had combined congenital defects - a hemorrhagic disorder due to abnormal platelet function and incomplete albinism, was described. His parents were first cousins. Platelet aggregation by collagen and epinephrine was markedly defective. A rapid disaggregation was observed in ADP-induced aggregation. Platelet factor 3 availability and in vitro adhesiveness were subnormal, while platelet factor 3 activity was normal. Defective ADP release was associated with impaired aggregation by collagen. Before aggregation, labeled adenine nucleotide pattern in patient’s platelets was not different from that in normal platelets. The increase of intermediates of platelet ATP breakdown, such as AMP and IMP, was less in patient’s platelets after collagen-induced aggregation. The release of labeled ATP and ADP in patient’s plasma was less than that in normal plasma.
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Murakami M, Odake K. Adenine Nucleotide Metabolism of Human Platelets. Thromb Haemost 2018. [DOI: 10.1055/s-0038-1654297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
SummaryAfter platelet-rich plasma was incubated with radioactive adenine, radioactive adenine nucleotides in platelets were separated by two-dimensional thin-layer chromatography.Radioactive adenine was selectively incorporated into adenine nucleotides. Gradual decomposition of labelled nucleotides was observed after longer period of incubation. Radioactive ATP, ADP, AMP, IMP, and hypoxanthine were separated from PCA extract of platelets. On the other hand, radioactive adenine and hypoxanthine were separated from platelet-poor plasma.After thrombin treatment, radioactive ATP in platelets broke down rapidly, while radioactive ADP decreased more slowly. Radioactive AMP increased at first in the cellular and supernatant fractions, and then decreased gradually. The accumulation of radioactive hypoxanthine was observed in the supernatant fraction. Released radioactive ATP and ADP were 23% and 22% of the initial radioactive ATP and ADP in platelets, respectively.
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Umeki K, Watanabe Y, Hirano H, Edahiro A, Ohara Y, Yoshida H, Obuchi S, Kawai H, Murakami M, Takagi D, Ihara K, Igarashi K, Ito M, Kawai Y. The relationship between masseter muscle thickness and appendicular skeletal muscle mass in Japanese community-dwelling elders: A cross-sectional study. Arch Gerontol Geriatr 2018; 78:18-22. [PMID: 29883805 DOI: 10.1016/j.archger.2018.05.014] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 05/07/2018] [Accepted: 05/28/2018] [Indexed: 12/12/2022]
Abstract
PURPOSE OF THE STUDY Sarcopenia has been identified as a health hazard in elderly people. Although the association between sarcopenia and a decrease in masticatory function has been reported, the mechanism underlying this association has not been widely reported. Therefore, in order to elucidate the relationship between sarcopenia and masticatory function, we examined whether the masseter muscle thickness (MMT), which is a factor influencing masticatory function, in community-dwelling elders is associated with the appendicular skeletal muscle index (SMI), a diagnostic criterion for sarcopenia. MATERIALS AND METHODS MMT was measured in 774 community-dwelling elders aged 65 years or older at resting state via ultrasonography, and SMI was measured with the bioelectrical impedance method. The relationships were investigated by calculating Pearson's correlation coefficients. Multiple regression analyses adjusted for age and sex, SMI, and oral-related items were performed to determine the association between these factors. RESULTS There was a significant correlation between the MMT and the SMI. The multiple regression analysis indicated that SMI was significantly associated with a decrease in MMT. CONCLUSIONS The reduction in whole-body skeletal muscle mass in sarcopenia may be involved in the reduction in MMT. Prevention of sarcopenia may be an important factor for maintaining masticatory function in the elderly.
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Murakami M, Arefiev A, Zosa MA. Generation of ultrahigh field by micro-bubble implosion. Sci Rep 2018; 8:7537. [PMID: 29795389 PMCID: PMC5967333 DOI: 10.1038/s41598-018-25594-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 04/25/2018] [Indexed: 12/02/2022] Open
Abstract
Breaking the 100-MeV barrier for proton acceleration will help elucidate fundamental physics and advance practical applications from inertial confinement fusion to tumour therapy. Herein we propose a novel concept of bubble implosions. A bubble implosion combines micro-bubbles and ultraintense laser pulses of 1020–1022 W cm−2 to generate ultrahigh fields and relativistic protons. The bubble wall protons undergo volumetric acceleration toward the centre due to the spherically symmetric Coulomb force and the innermost protons accumulate at the centre with a density comparable to the interior of a white dwarf. Then an unprecedentedly high electric field is formed, which produces an energetic proton flash. Three-dimensional particle simulations confirm the robustness of Coulomb-imploded bubbles, which behave as nano-pulsars with repeated implosions and explosions to emit protons. Current technologies should be sufficient to experimentally verify concept of bubble implosions.
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Schäfer CA, Uehara H, Konishi D, Hattori S, Matsukuma H, Murakami M, Shimizu S, Tokita S. Fluoride-fiber-based side-pump coupler for high-power fiber lasers at 2.8 μm. OPTICS LETTERS 2018; 43:2340-2343. [PMID: 29762587 DOI: 10.1364/ol.43.002340] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 04/18/2018] [Indexed: 06/08/2023]
Abstract
A side-pump coupler made of fluoride fibers was fabricated and tested. The tested device had a coupling efficiency of 83% and was driven with an incident pump power of up to 83.5 W, demonstrating high-power operation. Stable laser output of 15 W at a wavelength of around 2.8 μm was achieved over 1 h when using an erbium-doped double-clad fiber as the active medium. To the best of our knowledge, this is the first time a fluoride-glass-fiber-based side-pump coupler has been developed. A test with two devices demonstrated further power scalability.
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Masuda K, Murakami M, Tokunaga N, Kishibe M, Mori H, Utsunomiya R, Tsuda T, Shiraishi K, Tohyama M, Sayama K. 390 The micribome exists in the 'sterile' pustule of palmoplantar pustulosis. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Mori H, Murakami M, Utsunomiya R, Masuda K, Shiraishi K, Dai X, Tohyama M, Sayama K. 911 New role of exogenous HMGB1 for human keratinocyte under acute inflammatory event. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Takagi M, Demizu Y, Fuwa N, Sulaiman N, Terashima K, Fujii O, Jin D, Nagano F, Waki T, Mima M, Niwa Y, Katsui K, Murakami M, Okimoto T. EP-1571: Is Neoadjuvant ADT Necessary for Intermediate-Risk Prostate Cancer Treated with Proton Therapy? Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)31880-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Watanabe Y, Arai H, Hirano H, Morishita S, Ohara Y, Edahiro A, Murakami M, Shimada H, Kikutani T, Suzuki T. Oral function as an indexing parameter for mild cognitive impairment in older adults. Geriatr Gerontol Int 2018; 18:790-798. [DOI: 10.1111/ggi.13259] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 11/15/2017] [Accepted: 12/10/2017] [Indexed: 11/28/2022]
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Motokawa K, Watanabe Y, Edahiro A, Shirobe M, Murakami M, Kera T, Kawai H, Obuchi S, Fujiwara Y, Ihara K, Tanaka Y, Hirano H. Frailty Severity and Dietary Variety in Japanese Older Persons: A Cross-Sectional Study. J Nutr Health Aging 2018; 22:451-456. [PMID: 29484361 DOI: 10.1007/s12603-018-1000-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Providing older person individuals with an appropriate intervention at the time of frailty onset is important to prevent the progression of the condition and the need for long-term care. However, the proper timing of starting nutritional and dietary interventions for frail older person subjects has not been fully elucidated. Therefore, in this cross-sectional study, we aimed to clarify the association between frailty and dietary variety among older persons in Japan. We surveyed sex, age, body height, body weight, body mass index, serum albumin level, dietary variety, and nutritional intake indexes in 747 community-dwelling older person individuals who underwent a comprehensive health examination in October 2014. Frailty was determined using the Kihon Checklist (25 questions). Kihon Checklist is widely used to assess frailty in Japan, and their physical, cognitive and social function was evaluated. After excluding those who did not complete the Kihon Checklist and those who required long-term care, frailty status was analyzed in 665 older person individuals. The numbers and percentages of frail, pre-frail and robust older persons were found to be 77 (11.6%), 182 (27.4%) and 406 (61.0%) respectively. Significant differences among robust, pre-frail, and frail subjects were observed in terms of age, serum albumin level, alcohol consumption, smoking, and history of diabetes. Among the nutrition-related indexes, only the dietary variety showed a significant difference. The results of ordinal logistic regression analysis showed a significant association between frailty and sex, age, smoking status, diabetes, and dietary variety score. Dietary variety was significantly associated with the progression of frailty among older persons in the community.
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Burchell RK, Thornton L, Lim CK, Murakami M, Nakamura Y, Gal A. Presumptive migrating gall bladder mucocoele in two dogs with gall bladder rupture. J Small Anim Pract 2017; 60:58-61. [DOI: 10.1111/jsap.12804] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Revised: 11/09/2017] [Accepted: 11/13/2017] [Indexed: 11/29/2022]
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Oda F, Murakami M, Hanakawa Y, Tohyama M, Nakano N, Nishikomori R, Kambe N, Sayama K. A sporadic case of granulomatous disease negative for NOD2
mutations and mimicking Blau syndrome. Clin Exp Dermatol 2017; 43:57-58. [DOI: 10.1111/ced.13217] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/27/2016] [Indexed: 11/30/2022]
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Ishida M, Sakata N, Ise I, Ono T, Shimura M, Ishii K, Murakami M, Takadate T, Aoki T, Kudo K, Ohnuma S, Fukase K, Ohtsuka H, Mizuma M, Hayashi H, Nakagawa K, Morikawa T, Motoi F, Naitoh T, Unno M. The comparative anatomy of the folds, fossae, and adhesions around the duodenojejunal flexure in mammals. Folia Morphol (Warsz) 2017; 77:286-292. [PMID: 29064554 DOI: 10.5603/fm.a2017.0089] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2017] [Revised: 08/29/2017] [Accepted: 09/20/2017] [Indexed: 11/25/2022]
Abstract
BACKGROUND Anatomical knowledge of the duodenojejunal flexure is necessary for abdominal surgeries, and also important for physiologic studies about the duodenum. But little is known about the anatomy of this region in mammals. Here, we examined comparative anatomy to understand the anatomical formation of the duodenojejunal flexure in mammals. MATERIALS AND METHODS The areas around the duonenojejunal flexure were ob-served in mouse, rat, dog, pig, and human, and the anatomical structures around the duodenojejunal junction in the animals were compared with those in human. RESULTS The superior and inferior duodenal folds, and the superior and inferior duodenal fossae were identified in all examined humans. In pig, the structures were not clearly identified because the duodenum strongly adhered to the retroperitoneum and to the mesocolon. In mouse, rat, and dog, only the plica duodenocolica, which is regarded as the animal counterpart of the superior duo-denal fold in human, was identified, and other folds or fossae were not observed, probably because the duodenum was not fixed to the parietal peritoneum in those animals. Transection of the plica duodenocolica could return the normally rotated intestine back to the state of non-rotation in rat. CONCLUSIONS This study showed the anatomical similarities and dissimilarities of the duodenojejunal flexure among the mammals. Anatomical knowledge of the area is useful for duodenal and pancreatic surgeries, and for animal studies about the duodenum. (Folia Morphol 2018; 77, 2: 286-292).
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Mori H, Murakami M, Utsunomiya R, Masuda K, Shiraishi K, Dai X, Tohyama M, Sayama K. 369 Newly discovered function of reduced-HMGB1 as an inflammation suppressor in keratinocytes. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.07.564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Dai X, Tohyama M, Murakami M, Shiraishi K, Koji S. LB979 IL-33 synthesis and release induced by house dust mite allergens of keratinocytes is controlled by extracellular ATP-mediated signaling. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.07.058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Utsunomiya R, Okazaki H, Dai X, Murakami M, Masuda K, Mori H, Shiraishi K, Tohyama M, Sayama K. 449 Novel function of heparinoid as an anti-inflammatory agent. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.07.645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Ejiri K, Miyoshi T, Kohno K, Nakahama M, Doi M, Munemasa M, Murakami M, Takaishi A, Nakamura K, Ito H. P4287Impact of coronary stent length on periprocedural myocardial injury after percutaneous coronary intervention for stable coronary artery disease: from the RINC randomized controlled trial data. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p4287] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Murakami M, Arunasalam V, Bell J, Bell M, Bitter M, Blanchard W, Boody F, Boyd D, Bretz N, Bush C, Callen J, Cecchi J, Colchin R, Coonrod J, Davis S, Dimock D, Dylla H, Efthimion P, Emerson L, England A, Eubank H, Fonck R, Fredrickson E, Furth H, Grisham L, von Goeler S, Goldston R, Grek B, Grove D, Hawryluk R, Hendel H, Hill K, Hulse R, Johnson D, Johnson L, Kaita R, Kamperschroer J, Kaye S, Kikuchi M, Kilpatrick S, Kugel H, LaMarche P, Little R, Ma C, Manos D, Mansfield D, McCarthy M, McCann R, McCune D, McGuire K, Meade D, Medley S, Mikkelsen D, Mueller D, Nieschmidt E, Owens D, Pare V, Park H, Prichard B, Ramsey A, Rasmussen D, Roquemore A, Rutherford P, Sauthoff N, Schivell J, Schwob JL, Scott S, Sesnic S, Shimada M, Simpkins J, Sinnis J, Stauffer F, Stratton B, Suckewer S, Tait G, Taylor G, Tenney F, Thomas C, Towner H, Ulrickson M, Wieland R, Williams M, Wong KL, Wouters A, Yamada H, Yoshikawa S, Young K, Zarnstorff M. Confinement Studies In TFTR. ACTA ACUST UNITED AC 2017. [DOI: 10.13182/fst85-a40115] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Moriyama N, Shishido K, Takuma T, Tobita K, Tsukuda S, Yamanaka F, Mizuno S, Tanaka Y, Murakami M, Matsumi J, Takahashi S, Saito S. 2018Optical coherence tomographic analysis of in-scaffold atherosclerosis after bioresorbable vascular scaffold implantation at five year follow up. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.2018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Wada H, Suzuki M, Matsuda M, Ajiro Y, Shinozaki T, Sakagami S, Yonezawa K, Shimizu M, Funada J, Takenaka T, Morita Y, Murakami M, Abe M, Akao M, Hasegawa K. P659Impact of chronic kidney disease on biomarkers predicting severity of coronary artery disease in patients with suspected coronary heart disease: baseline data from the ANOX study. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.p659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Yamanaka T, Miyoshi T, Ejiri K, Kohno K, Nakahama M, Doi M, Munemasa M, Murakami M, Takaishi A, Nakamura K, Ito H. P837Comparison of renal outcome with renote ischemic preconditioning versus nicorandil following percutaneous coronary intervention in stable angina patients; results from the RINC trial. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.p837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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73
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Hirano H, Watanabe Y, Murakami M, Edahiro A, Motokawa K, Shirobe M, Yasuda J. RELATIONSHIP BETWEEN SARCOPENIA AND CHEWING ABILITY IN JAPANESE COMMUNITY-DWELLING ELDERLY. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Yamaji H, Murakami T, Higashiya S, Kamikawa S, Kawamura H, Murakami M, Hina K, Kusachi S. P859Impact of low voltage area ablation on outcome of atrial fibrillation ablation. Europace 2017. [DOI: 10.1093/ehjci/eux151.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Murakami T, Yamaji H, Higashiya S, Kamikawa S, Kawamura H, Murakami M, Kusachi S, Hina K. P1702Left atrial volume index significantly correlated with reverse remodeling of left atrium after atrial fibrillation ablation. Europace 2017. [DOI: 10.1093/ehjci/eux161.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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