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Effect of alendronate on muscle mass: Investigation in patients with osteoporosis
Atsushi Harada,Sadayuki Ito,Yasumoto Matsui,Yoshihito Sakai,Marie Takemura,Haruhiko Tokuda,Tetsuro Hida,Hiroshi Shimokata 대한골다공증학회 2015 Osteoporosis and Sarcopenia Vol.1 No.1
Objectives: Many osteoporosis drugs reliably increase bone mass in the elderly; if these drugs also had a positive effect on muscle, their benefit would be even greater. We examined the effect of alendronate monotherapy on muscle mass in patients with osteoporosis. Methods: In this retrospective cohort, case-control study, patients from an osteoporosis database were divided into 2 groups: alendronate-treated patients (group A; n ¼ 199) and a control group receiving no drug treatment (group C; n ¼ 233). Appendicular skeletal muscle mass (ASM) and skeletal muscle mass index (SMI) measured by dual-energy X-ray absorptiometry were assessed at approximately 1 year. The change in muscle mass was compared between the groups. Results: At baseline, group A included more women and had lower height, weight, bone mineral content, and muscle mass than group C. A comparison of changes after 1 yeardadjusted for age, sex, observation period, body mass index and initial valuesdrevealed that the muscle mass in group A showed increases by 0.137 kg/m2 in SMI, 514 g in ASM, and 319 g in lower limb muscle mass (LLM). Group C showed no changes in muscle mass. A significant difference in the amount of change in ASM and LLM was found between the groups after adjustment: 2.5 times and 4.4 times higher, respectively, in groups A and C. However, the difference in SMI disappeared after adjustment. Conclusions: This is the first study to show that alendronate may have a positive effect not only on bone, but on muscle as well.
Immortalized human microglial cell line: Phenotypic expression
Nagai, Atsushi,Mishima, Seiji,Ishida, Yuri,Ishikura, Hiroto,Harada, Takayuki,Kobayashi, Shotai,Kim, Seung U. Wiley Subscription Services, Inc., A Wiley Company 2005 JOURNAL OF NEUROSCIENCE RESEARCH - Vol.81 No.3
<P>Microglia are a major neuroglial component of the CNS, playing an important role as resident immunocompetent and phagocytic cells in the CNS in the event of injury and disease. To understand the role of microglia in the CNS in health and diseases, we have recently established an immortalized clonal cell line of human microglia, HMO6, from human embryonic telencephalon tissue by using a retroviral vector encoding v-myc. This immortalized microglia HMO6 cell line exhibits cell-type-specific antigens for microglia, including CD11b (Mac-1), CD68, CD86 (B7-2), HLA-ABC, HLA-DR, and RCA-1 lectin, and actively phagocytoses latex beads. © 2005 Wiley-Liss, Inc.</P>
Takuya Ashitomi,Taisei Harada,Tatsuya Okada,Takashi Noguchi,Osamu Nishikata,Atsushi Ota 한국정보디스플레이학회 2017 Journal of information display Vol.18 No.4
Proposed in this study and fabricated on a glass substrate without adopting impurity doping were p-channel polycrystalline silicon (Si) thin-film transistors (TFTs) with a metal source/drain (S/D) electrode. The amorphous 50-nm-thick Si films deposited on a glass substrate via plasma-enhanced chemical vapor deposition were polycrystallized using blue laser diode annealing. Gold (Au), a highwork- function metal, was evaporated for the S/D electrode directly onto the Si channel layer. As a result of the TFT formation, the typical Id–Vg characteristics of the p-channel TFT were successfully obtained. In addition, after hydrogenation at 200°C, the drain current drastically increased. The 14 cm2/Vs effective field effect hole mobility was deduced at the drain voltage of −1V.
Ito Sadayuki,Sakai Yoshihito,Harada Atsushi,Ando Kei,Kobayashi Kazuyoshi,Nakashima Hiroaki,Machino Masaaki,Kambara Shunsuke,Inoue Taro,Hida Tetsuro,Ito Kenyu,Ishiguro Naoki,Imagama Shiro 대한척추외과학회 2021 Asian Spine Journal Vol.15 No.5
Study Design: Retrospective study. Purpose: We aimed to use motor evoked potentials (MEPs) to examine the association of electrophysiological assessment of the trapezius muscle with neck pain. Overview of Literature: Previous reports on the association of neck pain with the trapezius muscle have focused on surface electromyograms and muscle oxygenation; however, to our knowledge, none of these studies included detailed data on MEPs. Methods: The study included 100 patients with cervical myelopathy who underwent surgery at the National Center for Geriatrics and Gerontology in Obu, Japan from June 2010 to March 2013. Before the surgery, neck pain was evaluated using a Visual Analog Scale (a score ≥50 indicated neck pain and a score <50 indicated no neck pain). The preoperative cross-sectional areas of the trapezius muscles were measured with cervical magnetic resonance imaging sagittal T2-weighted images. Cranial stimulation under general anesthesia was used to derive the MEPs, enabling the measurement of latency and amplitude, using preoperative MEPs of the trapezius muscles. Results: The MEP of the trapezius muscle in patients with neck pain had significantly shorter latencies than those in patients who did not have neck pain. However, there was no significant difference in the amplitude between patients with and without neck pain. However, this tended to be greater in patients with neck pain as compared to that in those without neck pain. The cross-sectional area of the trapezius muscle in patients with neck pain was significantly smaller than that in those who did not have neck pain. Conclusions: MEPs revealed electrophysiological abnormalities of the trapezius muscles in patients with neck pain, supporting a relationship of neck pain with the trapezius muscles.
Minami Tsuchiya,Seung-Il Cho,Atsushi Tanaka,Muneki Yasuda,Tomochika Harada,Michio Yokoyama 한국지능시스템학회 2020 INTERNATIONAL JOURNAL of FUZZY LOGIC and INTELLIGE Vol.20 No.2
This study investigates the invisible factors that influence the subjective satisfaction of sleep, which is a crucial factor in sleep-supporting systems. The effects of these factors were examined using a neural network (NN) model. A sensing bed system obtains the environmental and vital signs data with five-level evaluations. The relationships among over 300,000 collected data points were visualized and analyzed using the NN model. The results indicated that the temperature difference between the inside and outside of the bed affect the subjective satisfaction of sleep both during warm and cold periods. Furthermore, the NN models indicated that the respiratory frequency influences sleep satisfaction. In this study, both these factors and their effects on the subjective satisfaction of sleep were successfully investigated by utilizing the NN model.
STANDARD SPECIFICATION FOR CONCRETE STRUCTURES, -2001 “MAINTENANCE”
Toyoaki Miyagawa,Hidenori Morikawa,Nobuaki Otsuki,Ayaho Miyamoto,Kazuo Eguchi,Hidenori Hamada,Atsushi Hattori,Tetsuo Harada,Susumu Inoue,Yuichi Kaneko,Yasushi Kamihigashi,Kenji Kawai,Masaru Kawamura,Y 대한토목학회 2003 대한토목학회 학술대회 Vol.2003 No.10
Sarcopenia in elderly patients with chronic low back pain
Yoshihito Sakai,Hiroki Matsui,Sadayuki Ito,Tetsuro Hida,Kenyu Ito,Hiroyuki Koshimizu,Atsushi Harada 대한골다공증학회 2017 Osteoporosis and Sarcopenia Vol.3 No.4
Objectives: The prevalence of chronic low back pain (CLBP) increases with age and several mechanisms are involved in the development of CLBP, including osteoporosis; however, no associations with sarcopenia have yet been identified. Methods: In total, 100 patients with CLBP and 560 patients without CLBP (nCLBP) aged over 65 years were studied. Skeletal muscle mass index (SMI) and percentage of body fat were evaluated using wholebody dual-energy X-ray absorptiometry. Sarcopenia was diagnosed when the relative SMI was more than 2 standard deviations below the mean in young adults. Thus, the cutoff value for sarcopenia was defined according to Sanada's Japanese population data. Paraspinal muscle cross-sectional areas of the lumbar multifidus and the erector spinae muscles were calculated using magnetic resonance imaging. Results: Forty patients (40.0%) from the CLBP group and 149 (26.6%) from the nCLBP group met the criteria of sarcopenia. SMI was significantly lower and the body fat ratio was significantly higher in the CLBP group compared with the nCLBP group. Sarcopenic obesity was significantly observed in the CLBP group. Lumbar multifidus and the erector spinae muscle cross sectional area were significantly lower in the CLBP group. Conclusions: Elderly patients with CLBP have significantly lower skeletal muscle mass, and age-related mechanisms in sarcopenia are considered to be associated with chronic pain. Therapeutic procedures that are used to treat elderly aging muscle, including muscle strengthening and performance training, can possibly be a treatment for or used to prevent elderly CLBP. © 2017 The Korean Society of Osteoporosis. Publishing services by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).