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Risa Yamada(Risa Yamada ),Takeshi Fujii(Takeshi Fujii ),Kotaro Hattori(Kotaro Hattori ),Hiroaki Hori(Hiroaki Hori ),Ryo Matsumura(Ryo Matsumura ),Tomoko Kurashimo(Tomoko Kurashimo ),Naoko Ishihara(Nao 대한정신약물학회 2023 CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE Vol.21 No.2
Objective: This study aimed to determine if the discrepancy between depression severity rated by clinicians and that reported by patients depends on key behavioral/psychological features in patients with mood disorders. Methods: Participants included 100 patients with mood disorders. First, we examined correlations and regressions between scores on the Hamilton Depression Rating Scale (HAMD) and Beck Depression Inventory (BDI). Second, we divided the participants into those who provided 1) greater ratings for the BDI compared with the HAMD (BDI relative- overrating, BO) group, 2) comparable ratings for the BDI and HAMD (BDI relatively concordant, BC) group, or 3) less ratings for the BDI (BDI relative-underrating, BU) group. Adverse childhood experiences, autistic-like traits, and coping styles were evaluated with a six-item short version of the Childhood Trauma Questionnaire (CTQ-6), the Social Responsiveness Scale for Adults (SRS-A), and the Ways of Coping Checklist (WCCL), respectively. Results: A significant correlation was found between HAMD and BDI scores. Total and emotional abuse subscale scores from the CTQ-6, and the self-blame subscale scores from the WCCL were significantly higher for the BO group compared with the BU group. The BO group also elicited significantly higher SRS-A total scores than did the other groups. Conclusion: These findings suggest that patients with adverse emotional experiences, autistic-like traits, and self-blame coping styles perceive greater distress than that evaluated objectively by clinicians. The results indicate the need for inclusion of subjective assessments to effectively evaluate depressive symptoms in patients deemed to have these psycho- behavioral concerns.
Evaluation of 131I (monoiodide) BSP for Clinical Studies
Ueda, Hideo,Iro, Masahiro,Kurata, Kunio,Yamada, Hideo,Iwase, Tohru,Migita, Tohru,Kameda, Haruo,Kato, Sadatake,Sato, Noboru,Ide, Kazuko,Wakebayashi, Takao 대한핵의학회 1971 핵의학 분자영상 Vol.5 No.1
"In 1925 Rosenthal and White introduced a bromosulfophthalein (BSP) dye retention test as a sensitive indicator of liver function. Even now it is regared as one of the most sensitive agents for the detection of non-icteric liver disease (liver cirrhosis, early stage of acute-hepatitis and hepatic tumor). BSP accumulates in the liver cells, conjugates with glutathione and is excreted into the bile. Therefore, a disorder in its excretion is due to a disturbance of one of these processes. Since bilirubin and BSP compete for uptake by the liver and increased serum bilirubin interferes with the colorimetric determination of BSP, it has been considered that BSP test is inappropriate for the differential diagnosis of jaundice conditions. It has been generally said that when jaundice is present, the BSP test is useless and should not be performed. In 1955, Taplin et al. labeled rose bengal, a dye similarly metabolized in the liver as BSP, with 131I and measured the hepatic excretion of this dye by external monitoring. Laster, Blahd et al. applied this method to the determination of the peripheral pool, succeeding in the diagnosis of chronic and subacute hepatic diseases without colorimetry. In 1968, Yamada, Taplin et al. suggested the possibility of differentiating so-called medical jaundice from surgical jaundice by scanning the subjects during 24 to 48 hours following intravenous injection of 131I-labeled rose bengal. As mentioned before, many authorities hold the opinion that BSP is not proper for the differential diagnosis of jaundice states. Some have tried to diagnose biliary tract obstruction by a malignant tumor by measuring BSP excretion into duodenal fluid and others by quantitating changes in serum levels of conjugated and free BSP. Furthermore, Burton et al. reported that in patients with extrahepatic obstructive jaundice, BSP retention was observed for 24 days after its administration. From a consideration of all these finding we came to a conclusion that the differential diagnosis of various jaundice states, (medical, surgical and constitutional) is possible by sequential scanning with radioisotope-labeled BSP, as with rose bengal, in accordance with procedures described by Yamada, Taplin et al. The evidence suggested that labeled BSP might make a more important contribution than rose bengal. "
Creation of Multi-Functional Foods
Yamada, Koji The Korean Society of Food Science and Nutrition 2004 식품산업과 영양 Vol.9 No.1
Foods contain various biologically functional components which contribute to our health. As shown in Table 1, bioregulatory function of food components are classified into five categories. In the enhancement of biodefense system, dietary fibers (DF), unsaturated fatty acids (UFA), antioxidants are effective. These components are also, effective in other categories. This means that food components are multifunctional. To maintain our health, effective use of multi-functional activity of food components is essential. (omitted)
Animal models of Alzheimer's disease and evaluation of anti-dementia drugs
Yamada, Kiyofumi,Nabeshima, Toshitaka 한림대학교 환경·생명과학연구소 2002 [일송 국제심포지엄] 노화와 만성퇴행성 신경질환 Vol.- No.4
Alzheimer's disease(AD) is the most common cause of progressive decline of cognitive function in aged humans, and is characterized by the presence of numerous senile plaques and neurofibrillary tangles accompanied by neuronal loss. Some, but not all, of the neuropathological alterations and cognitive impairment in AD can be reproduced genetically and pharmacologically in animals. It should be possible to discover novel drugs that slow the progress or alleviate the clinical symptoms of AD by using these animal models. We review the recent progress in the development of animal models of AD and discuss how to use these model animals to evaluate novel anti-dementia drugs.
Subnanometer Vacancy Defects Introduced on Graphene by Oxygen Gas
Yamada, Yasuhiro,Murota, Kazumasa,Fujita, Ryo,Kim, Jungpil,Watanabe, Ayuko,Nakamura, Masashi,Sato, Satoshi,Hata, Kenji,Ercius, Peter,Ciston, Jim,Song, Cheng Yu,Kim, Kwanpyo,Regan, William,Gannett, Wil American Chemical Society 2014 JOURNAL OF THE AMERICAN CHEMICAL SOCIETY - Vol.136 No.6
<P>The basal plane of graphene has been known to be less reactive than the edges, but some studies observed vacancies in the basal plane after reaction with oxygen gas. Observation of these vacancies has typically been limited to nanometer-scale resolution using microscopic techniques. This work demonstrates the introduction and observation of subnanometer vacancies in the basal plane of graphene by heat treatment in a flow of oxygen gas at low temperature such as 533 K or lower. High-resolution transmission electron microscopy was used to directly observe vacancy structures, which were compared with image simulations. These proposed structures contain CO, pyran-like ether, and lactone-like groups.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jacsat/2014/jacsat.2014.136.issue-6/ja4117268/production/images/medium/ja-2013-117268_0005.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/ja4117268'>ACS Electronic Supporting Info</A></P>
Suppression of multiple photon absorption in a SiC photonic crystal nanocavity operating at 1.55 μm.
Yamada, Shota,Song, Bong-Shik,Upham, Jeremy,Asano, Takashi,Tanaka, Yoshinori,Noda, Susumu Optical Society of America 2012 Optics express Vol.20 No.14
<P>We show that a SiC photonic crystal cannot only inhibit two photon absorption completely, but also suppress higher-order multiple photon absorption significantly at telecommunication wavelengths, compared to conventional Si-based photonic crystal nanocavities. Resonant spectra of a SiC nanocavity maintain a Lorentzian profile even at input energies 100 times higher than what can be applied to a Si nanocavity without causing nonlinear effects. Theoretical fitting of the results indicates that the four photon absorption coefficient in the SiC nanocavity is less than 2.0 10(-5) cm(5)/GW(3). These results will contribute to the development of high-power applications of SiC nanocavities such as harmonic generation, parametric down conversion, and Raman amplification.</P>
Yamada, Yusuke,Miyahigashi, Takamitsu,Kotani, Hiroaki,Ohkubo, Kei,Fukuzumi, Shunichi The Royal Society of Chemistry 2012 ENERGY AND ENVIRONMENTAL SCIENCE Vol.5 No.3
<P>Photocatalytic hydrogen evolution with 2-phenyl-4-(1-naphthyl)quinolinium ion (QuPh<SUP>+</SUP>–NA) as a photocatalyst and dihydronicotinamide adenine dinucleotide (NADH) as a sacrificial electron donor has been made possible for the first time by using nickel nanoparticles (NiNPs) as a non-precious metal catalyst. The hydrogen evolution rate with the most active Ni nanoparticles (hexagonal close-packed (<I>hcp</I>) structure, 6.6 nm) examined here was 40% of that with commercially available Pt nanoparticles (2 nm) using the same catalyst weight. The catalytic activity of NiNPs depends not only on their sizes but also on their crystal phases. The hydrogen-evolution rate normalized by the catalyst weight increased as the size of NiNPs becomes smaller, with regard to the crystal phase, the hydrogen-evolution rate of the NiNPs with <I>hcp</I> structure is more than 4 times higher than the rate of the NiNPs with face-centred cubic (<I>fcc</I>) structure of similar size. NiNPs act as the hydrogen-evolution catalyst under the pH conditions between 4.5 and 8.0, although the hydrogen-evolution rate at pH > 7.0 was much lower as compared with the hydrogen-evolution rate at pH 4.5. A kinetic study revealed that the rate of electron transfer from photogenerated QuPh&z.rad;–NA to NiNPs was much higher than the rate of hydrogen evolution, indicating that the rate-determining step may be proton reduction or desorption of hydrogen.</P> <P>Graphic Abstract</P><P>Photocatalytic hydrogen evolution with Ni nanoparticles was achieved for the first time. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c2ee03106j'> </P>
THE SOCIAL AUTHORITY OF JAPANESE SCHOOLS
YAMADA, C.L.S. EAST WEST EDUCATION RESEARCH INSTITUTE EWHA WOMANS 1987 East west education Vol.8 No.2
Mass education has become a universal feature of advanced countries. With parents legally obliged to send their children to school for a prescribed number of years, the school has divested the older generation, the traditional transmitters of knowledge and the cultural heritage, of their formal educational responsibilities. As a result, a sharp division of labour is evident between the school and the parents in the transmission of formal knowledge.