1
|
Takeda R, Ishii R, Parvin S, Shiozawa A, Nogi T, Sasaki Y. Novel presynaptic assay system revealed that metformin ameliorates exaggerated synaptic release and Munc18-1 accumulation in presynapses of neurons from Fragile X syndrome mouse model. Neurosci Lett 2023; 810:137317. [PMID: 37286070 DOI: 10.1016/j.neulet.2023.137317] [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: 03/25/2023] [Revised: 05/13/2023] [Accepted: 05/30/2023] [Indexed: 06/09/2023]
Abstract
Fragile X syndrome (FXS) is a developmental disorder characterized by intellectual disability and autistic-like behaviors. These symptoms are supposed to result from dysregulated translation in pre- and postsynapses, resulting in aberrant synaptic plasticity. Although most drug development research on FXS has focused on aberrant postsynaptic functions by excess translation in postsynapses, the effect of drug candidates on FXS in presynaptic release is largely unclear. In this report, we developed a novel assay system using neuron ball culture with beads to induce presynapse formation, allowing for the analysis of presynaptic phenotypes, including presynaptic release. Metformin, which is shown to rescue core phenotypes in FXS mouse model by normalizing dysregulated translation, ameliorated the exaggerated presynaptic release of neurons of FXS model mouse using this assay system. Furthermore, metformin suppressed the excess accumulation of the active zone protein Munc18-1, which is supposed to be locally translated in presynapses. These results suggest that metformin rescues both postsynaptic and presynaptic phenotypes by inhibiting excess translation in FXS neurons.
Collapse
Affiliation(s)
- Renoma Takeda
- Functional Structure Science Laboratory, Department of Medical Life Science, Yokohama City University Graduate School of Medical Life Science, 1-7-29 Suehiro-cho, Tsurumi-ward, Yokohama 230-0045, Japan
| | - Rie Ishii
- Functional Structure Science Laboratory, Department of Medical Life Science, Yokohama City University Graduate School of Medical Life Science, 1-7-29 Suehiro-cho, Tsurumi-ward, Yokohama 230-0045, Japan
| | - Shumaia Parvin
- Functional Structure Science Laboratory, Department of Medical Life Science, Yokohama City University Graduate School of Medical Life Science, 1-7-29 Suehiro-cho, Tsurumi-ward, Yokohama 230-0045, Japan
| | - Aki Shiozawa
- Structural Biology Laboratory, Department of Medical Life Science, Yokohama City University Graduate School of Medical Life Science, 1-7-29 Suehiro-cho, Tsurumi-ward, Yokohama 230-0045, Japan
| | - Terukazu Nogi
- Structural Biology Laboratory, Department of Medical Life Science, Yokohama City University Graduate School of Medical Life Science, 1-7-29 Suehiro-cho, Tsurumi-ward, Yokohama 230-0045, Japan
| | - Yukio Sasaki
- Functional Structure Science Laboratory, Department of Medical Life Science, Yokohama City University Graduate School of Medical Life Science, 1-7-29 Suehiro-cho, Tsurumi-ward, Yokohama 230-0045, Japan.
| |
Collapse
|
2
|
Nagami A, Ishii R, Kitagawa K, Ishii M, Terazono S, Sanada T, Yoshida A. [Derivation of Conversion Formula of Image Quality Figure (IQF inv) Values by Old and New Analysis Software for Mammographic Contrast-detail Phantom]. Nihon Hoshasen Gijutsu Gakkai Zasshi 2023; 79:121-127. [PMID: 36642510 DOI: 10.6009/jjrt.2023-1326] [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] [Indexed: 01/17/2023]
Abstract
PURPOSE This study deals with the conversion of the image quality figure (IQFinv) values with CDMAM Analyser ver. 1 (old analysis software) used to analyse the images of CDMAM 3.4 phantom into the IQFinv values with a new analysis software, that is, CDMAM Analyser (ver. 2 and ver. 2.3), which is a software improved to be closer to human visual evaluation. METHODS The IQFinv values were calculated using four mammography units and three analysis software. The IQFinv values using the old and new software were compared. RESULTS The IQFinv values had no difference according to mammography units and beam quality. The conversion formula of IQFinv from CDMAM Analyser ver. 1 to CDMAM Analyser ver. 2 was derived. Furthermore, the conversion formula of IQFinv from CDMAM Analyser ver. 1 to CDMAM Analysis ver. 2.3 was also derived. CONCLUSION Using each conversion formula, the IQFinv values using the old software can be converted to those using the new software. There was a slight difference between the IQFinv values using the new software.
Collapse
Affiliation(s)
- Akiko Nagami
- Division of Clinical Radiology, Tottori University Hospital
| | - Rie Ishii
- Department of Radiological Technology, Faculty of Health and Welfare, Tokushima Bunri University
| | - Kaoru Kitagawa
- Center for Radiology and Radiation Oncology, Kobe University Hospital
| | - Mie Ishii
- Department of Radiological Technology, School of Health Sciences, Gifu University of Medical Science
| | | | - Taizo Sanada
- Department of Radiological Technology, Okayama Saiseikai General Hospital
| | - Akira Yoshida
- Prefectural University of Hiroshima, Graduate School of Comprehensive Scientific Research
| |
Collapse
|
3
|
Takahashi T, Suzuki N, Ishii R, Toyoda S, Shibata M, Azuma Y, Kurose Y. Egg laying performance and egg quality with Paracoccus carotinifaciens supplementation containing high astaxanthin levels. Br Poult Sci 2023; 64:47-55. [PMID: 36129068 DOI: 10.1080/00071668.2022.2126933] [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] [Indexed: 11/02/2022]
Abstract
1. This study assessed 1) the effects of Paracoccus carotinifaciens supplementation containing high astaxanthin levels on egg production performance and quality, 2) dynamics of carotenoids levels in the egg yolk and 3) taste of astaxanthin-rich egg yolk.2. Laying hens were fed diets containing different levels of P. carotinifaciens-derived astaxanthin (ASX; 0, 2, 4, 8, or 16 ppm) for 28 d (experiment 1) or a diet containing 16 ppm astaxanthin for 28 d followed by a 0 ppm astaxanthin diet for 28 days (experiment 2).3. Production performance, egg quality and egg yolk carotenoid levels were examined in experiment 1 (Ex1) and the dynamics of egg yolk carotenoid levels and egg yolk taste in experiment 2 (Ex2).4. ASX supplementation did not affect production performance or egg quality. ASX levels in the egg yolk became saturated after seven days of 16 ppm supplementation and decreased to less than one-tenth of the saturated levels seven days after supplementation cessation. Supplementation with 16 ppm ASX for 28 d did not affect egg yolk taste.5. Supplementation resulted in the production of ASX-rich eggs for a brief period without affecting production performance, egg quality or taste. Understanding the time taken for the incorporation of ASX into egg yolks is beneficial for value-added egg production and may help in minimising supplementation costs.
Collapse
Affiliation(s)
- T Takahashi
- Laboratory of Animal Metabolism and Function, School of Veterinary Medicine, Kitasato University, Towada, Aomori, Japan
| | - N Suzuki
- Research and Development Department, Kanematsu Agritech Co. Ltd, Koshigaya, Saitama, Japan
| | - R Ishii
- Laboratory of Animal Metabolism and Function, School of Veterinary Medicine, Kitasato University, Towada, Aomori, Japan
| | - S Toyoda
- Laboratory of Animal Metabolism and Function, School of Veterinary Medicine, Kitasato University, Towada, Aomori, Japan
| | - M Shibata
- Laboratory of Animal Metabolism and Function, School of Veterinary Medicine, Kitasato University, Towada, Aomori, Japan
| | - Y Azuma
- Laboratory of Animal and Human Nutritional Physiology, School of Veterinary Medicine, Kitasato University, Towada, Aomori, Japan
| | - Y Kurose
- Laboratory of Animal Metabolism and Function, School of Veterinary Medicine, Kitasato University, Towada, Aomori, Japan
| |
Collapse
|
4
|
Muramatsu C, Nishide H, Ishii R, Shinohara N, Yamashina H. [Breast]. Nihon Hoshasen Gijutsu Gakkai Zasshi 2023; 79:1239-1240. [PMID: 37981310 DOI: 10.6009/jjrt.2023-2282] [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: 11/21/2023]
|
5
|
Honda M, Kusashio E, Ishii R. [A Method to Obtain a Sheet-like X-ray Phantom Made from Iodine Contrast Agent]. Nihon Hoshasen Gijutsu Gakkai Zasshi 2022; 78:33-43. [PMID: 35046220 DOI: 10.6009/jjrt.780103] [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] [Indexed: 11/11/2022]
Abstract
PURPOSE A sheet-like X-ray phantom on which thin Iodine is uniformly coated was developed to facilitate the handling of iodined objects used in any X-ray imaging studies. METHODS The most recommendable protocol as follows: (1) prepare undiluted 240 mg/ml Iohexol-based contrast agent and drop around 1.6 g on a horizontal surface. (2) infiltrate the agent into a membrane filter (47 mm in diameter) from the secondary side. (3) one minute later, the excess liquid components should be removed by a softy absorbent paper, and the infiltrated membrane filter should be left until substantially dried. RESULT The dried membrane filter can be utilized as a sheet-like X-ray phantom on which the iodine of around 2.45 mg is almost uniformly distributed per 1 cm2. However, since the iodine density is slightly higher on the periphery part of the sheet, less than 80% area of the entire sheet is recommended to be used from a viewpoint of the spatial uniformity. CONCLUSION In the practical experiments, the X-ray attenuation factor can be controlled by changing the stacking number of the sheet, and the spatial size and form can also be designed by cutting the sheet. This capability is expected to improve the efficiency of any X-ray experiments and quality control works that requires iodined materials.
Collapse
Affiliation(s)
- Michitaka Honda
- Department of Radiological Technology, Faculty of Health and Welfare, Tokushima Bunri University
| | - Eiji Kusashio
- Research Department, Research & Development Division, Fuji Pharma Co., Ltd
| | - Rie Ishii
- Department of Radiological Technology, Faculty of Health and Welfare, Tokushima Bunri University
| |
Collapse
|
6
|
Chiba Y, Fujiwara A, Yoshino N, Ohsaka M, Sato M, Takase S, Doi R, Ohtsuka K, Shimada S, Ishii R. [Evaluation of the Capacity to Produce Histamine by Histamine-Producing Bacteria during Storage at 10℃]. Shokuhin Eiseigaku Zasshi 2022; 63:129-135. [PMID: 36047088 DOI: 10.3358/shokueishi.63.129] [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] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Histamine is produced from histidine using histidine decarboxylase of histamine-producing bacteria. However, associated histamine food poisoning demands microbiological controls. Furthermore, studies reported that histamine production by histamine-producing bacteria is affected by temperature. Therefore, to prevent histamine food poisoning, it is desirable to store foods below 4℃. However, it is challenging to maintain the storage temperature of food substances in refrigerators constantly below 4℃. Thus, we investigated histamine production capacity using seven histamine-producing bacterial strains under storage at 10℃, a more reasonable cold storage condition. Subsequently, we examined the variation of histamine production in buffers, the correlation between bacterial density and histamine production quantities, and the growth rate in broths. Results showed that similar levels of histamine were produced in buffers even after 5 days of storage under certain conditions in which histamine-producing bacteria did not grow. Moreover, bacterial density was proportional to histamine production, and the coefficient of determination was more than 0.97, and the bacterial density required to produce 200 μg/mL of histamine during storage at 10℃ was calculated to be 4×107-4×108 CFU/mL. When the initial bacterial density was 102-103 CFU/mL, psychrophilic bacteria required 2 or 3 days and mesophilic bacteria required more than 4 days to grow above 107 CFU/mL. The above results suggest that understanding the capacity of histamine-producing bacteria to produce histamine and its growth rate in foods is important for the prevention of histamine food poisoning.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Rie Doi
- Saitama Institute of Public Health
| | | | | | | |
Collapse
|
7
|
Sakakida N, Sato M, Kando S, Kashima K, Shimada S, Ishii R. [Prevalence of Foodborne Pathogens in Retail Meat in Saitama, Japan]. Shokuhin Eiseigaku Zasshi 2022; 63:151-157. [PMID: 36047091 DOI: 10.3358/shokueishi.63.151] [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] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
We investigated the prevalence of Campylobacter jejuni, Campylobacter coli, Salmonella, enterohemorrhagic Escherichia coli, enterotoxigenic Escherichia coli, Yersinia enterocolitica, and Escherichia albertii in domestic chicken and pork sold at retail stores in Saitama Prefecture, Japan. Campylobacter was detected in 35.7% (60/168) of chicken samples and 7.3% (14/190) of pork samples. C. jejuni and C. coli were predominant in chicken and pork, respectively. Salmonella was found in 58.1% (100/172) of chicken samples and 19.9% (41/206) of pork samples. Moreover, Salmonella Schwarzengrund was the major serovar observed in chicken isolates, whereas S. Typhimurium monophasic variant was in pork isolates. Furthermore, ETEC was found in 0.6% (1/160) of chicken samples and 2.4% (5/206) of pork samples. Y. enterocolitica was absent from all (83/83) chicken samples but was present in 9.3% (18/193) of pork samples, with a prevalence in pork tongues as high as 21.0% (13/62 samples). However, EHEC and E. albertii were not detected in our study. Therefore, the results of this study indicate that chicken was highly contaminated with Campylobacter sp. and Salmonella, and pork was with Y. enterocolitica serotype O3, Campylobacter sp., Salmonella, and ETEC.
Collapse
|
8
|
Niwa T, Yasuda S, Yamamoto Y, Murakami M, Ishii R. Contribution of the human cytochrome P450 2C subfamily to the metabolism of and the interactions with endogenous compounds including steroid hormones. Pharmazie 2021; 76:611-613. [PMID: 34986958 DOI: 10.1691/ph.2021.1836] [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] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The objectives of this study were as follows: 1) to compare the metabolic activities of endogenous compounds and their effects on dopamine formation and hydroxylation of steroid hormones, mediated by human cytochrome P450 (CYP), including CYP2C9.1 and CYP2C19, as well as the variants CYP2C9.2 (Arg144Cys) and CYP2C9.3 (Ile359Leu); and 2) to assess the effects of steroid hormones on the activities of CYP2C9.1, CYP2C9.2, and CYP2C19 to estimate the contribution of the CYP2C subfamily to metabolism and drug-drug interactions of endogenous compounds. Dopamine formation from p -tyramine and 6β- and 21- (for progesterone) hydroxylation of testosterone, cortisol, and progesterone by CYP2C9 variants, CYP2C19, CYP2D6, and CYP3A4 were determined using HPLC. The effects of steroid hormones such as testosterone, cortisol, and progesterone on tolbutamide methyl hydroxylation mediated by CYP2C subfamily members were investigated. Only CYP2D6 catalyzed dopamine formation. The 6β-hydroxylation activities of testosterone, cortisol, and progesterone catalyzed by CYP2C9 variants and CYP2D6 were less than 5% of those by CYP3A4. Although cortisol did not inhibit tolbutamide methyl hydroxylation catalyzed by CYP2C9.1, CYP2C9.2, or CYP2C19 and testosterone did not inhibit CYP2C19 activity, the reactions catalyzed by CY2C9.1 and CYP2C9.2 were inhibited by testosterone. The inhibition of progesterone by CYP2C19 was stronger than that by CYP2C9.1 and CYP2C9.2. CYP2C9.1 and CYP2C19 noncompetitively and competitively inhibited tolbutamide methyl hydroxylation with inhibition constants of 43.2 μM and 1.03 μM, respectively. Clinical interactions among endogenous compounds would vary within the CYP2C subfamily, although the contribution of the CYP2C subfamily may be of minor importance for dopamine formation and the detoxification (6β-hydroxylation) of endogenous steroid hormones.
Collapse
Affiliation(s)
- T Niwa
- School of Pharmacy, Shujitsu University, Okayama, Japan;,
| | - S Yasuda
- School of Pharmacy, Shujitsu University, Okayama, Japan
| | - Y Yamamoto
- School of Pharmacy, Shujitsu University, Okayama, Japan
| | - M Murakami
- School of Pharmacy, Shujitsu University, Okayama, Japan
| | - R Ishii
- School of Pharmacy, Shujitsu University, Okayama, Japan
| |
Collapse
|
9
|
Okubo N, Yokoyama E, Honda K, Takeda K, Sakai H, Ishii R, Miura Y. Improving Clinical Nurses’ Competency and Nursing Care Using the Research Process Model. Australasian Journal of Neuroscience 2021. [DOI: 10.21307/ajon-2021-005] [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: 11/11/2022] Open
|
10
|
Ishii R, Nakamura M, Ishii M, Maeda M, Okamoto R, Hatada T, Imada M, Shida K, Higashida Y. [Construction and Analysis of a Digital Mammography Database: Analysis of Breast Compression Pressures at Four Facilities]. Nihon Hoshasen Gijutsu Gakkai Zasshi 2021; 77:1209-1216. [PMID: 34670929 DOI: 10.6009/jjrt.2021_jsrt_77.10.1209] [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] [Indexed: 11/11/2022]
Abstract
We analyzed the compression pressures in 2772 mammography images of 807 patients acquired by digital mammography equipment at four facilities. The analysis included the average compression pressure at all facilities, difference in compression pressure at each facility, differences between the pressures used by radiological technologists in the same facility, and difference attributed to the breast structure. We also analyzed the effects of the compression pressure on the breast thickness and mean glandular dose (MGD) at each facility. The median values of the compression pressure and breast thickness for the 2772 images at all facilities were 86.5 N and 43 mm, respectively. The compression pressures differed among the institutions. The maximum difference in the median pressures among the four facilities was 38.6 N, while the difference in the breast thickness was 6 mm. The radiological technologists working at the same facility used almost the same compression pressure. However, differences between the compression pressures used by different radiological technologists were observed. The compression pressure in a dense breast was smaller than that in a non-dense breast. The difference in the compression pressure affected the breast thickness and MGD. The results of this analysis could be utilized for an optimal imaging in future digital mammography.
Collapse
Affiliation(s)
- Rie Ishii
- Department of Radiological Technology, Faculty of Health and Welfare, Tokushima Bunri University
| | - Mai Nakamura
- Department of Radiological Technology, Faculty of Fukuoka Medical Technology, Teikyo University
| | - Mie Ishii
- Department of Radiological Technology, School of Health Sciences, Gifu University of Medical Science
| | - Megumi Maeda
- Department of Radiology, Sasebo City General Hospital
| | | | - Toshikazu Hatada
- Department of Radiological Technology, Kitakyushu City Medical Center
| | - Mariyo Imada
- Department of Radiological Technology, Kagoshima City Hospital
| | - Keiichi Shida
- Department of Radiological Technology, Faculty of Fukuoka Medical Technology, Teikyo University
| | - Yoshiharu Higashida
- Department of Radiological Technology, Faculty of Fukuoka Medical Technology, Teikyo University
| |
Collapse
|
11
|
Ishii M, Nakamura M, Ishii R, Shida K, Hatada T, Murakami N, Maeda M, Okamoto R, Shinohara S, Araki F, Higashida Y. Effect of Compression Force and Target or Target/Filter Combination on Mean Glandular Dose for Japanese Women in Full-Field Digital Mammography System. j med imaging hlth inform 2021. [DOI: 10.1166/jmihi.2021.3862] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
We constructed a mammography database of 807 Japanese women and 2,772 images obtained using five commercial full-field digital mammography (FFDM) devices at four different facilities. Five types of mammography devices fabricated by four manufacturers were used: one with a Mo target
(AMULET F), one with Mo and Rh targets (Senographe DS), one with Mo and W targets (AMULET), and two with a W target (MAMMOMAT Fusion and Selenia Dimensions). The purpose of this study was to focus on the mean glandular dose (MGD) in the database and analyze the difference in the MGD of Japanese
women radiographed by mammographic devices with different targets or target/filter combinations. Furthermore, we clarify the difference between the displayed and measured MGDs for the three types of mammography devices. The average compression pressure and compression breast thickness of the
Japanese women in the mammography in this study were 90.9±21.7 N and 43.3±12.9 mm, respectively. The breast compression pressure slightly varied depending on the facility or FFDM device, while the compression breast thickness decreased with the increase in the compression pressure
for all FFDM devices. Differences in breast compression thickness existed depending on the mammography devices. The MGDs of the two types of mammography devices using the W target were smallest (1.335±0.358, 1.218±0.464 mGy). The displayed and measured MGDs of the three types
of FFDM devices had a good correlation. However, the difference between the displayed and measured MGDs of the two devices increased with the MGD.
Collapse
Affiliation(s)
- Mie Ishii
- Department of Radiological Technology, School of Health Sciences, Gifu University of Medical Science, 795-1 Nagamine, Ichihiraga, Seki, Gifu 501-3892, Japan
| | - Mai Nakamura
- Department of Radiological Technology, Faculty of Fukuoka Medical Technology, Teikyo University, 6-22 Misakimachi, Omuta, Fukuoka 836-8505, Japan
| | - Rie Ishii
- Department of Radiological Technology, Faculty of Health and Welfare, Tokushima Bunri University, 1314-1 Shido, Sanuki, Kagawa 769-2193, Japan
| | - Keiichi Shida
- Department of Radiological Technology, Faculty of Fukuoka Medical Technology, Teikyo University, 6-22 Misakimachi, Omuta, Fukuoka 836-8505, Japan
| | - Toshikazu Hatada
- Department of Radiological Technology, Kitakyushu City Medical Center, 2-1-1 Bashaku, Kitakyushu Kokurakita-ku, Fukuoka 802-0077, Japan
| | - Noriko Murakami
- Department of Radiological Technology, Kitakyushu City Medical Center, 2-1-1 Bashaku, Kitakyushu Kokurakita-ku, Fukuoka 802-0077, Japan
| | - Megumi Maeda
- City, Sasebo City General Hospital, 9-3 Hirase-cho, Sasebo, Nagasaki 857-8511, Japan
| | - Rumi Okamoto
- Department of Radiology, Social Medical Corporation Hakuaikai Sagara Hospital 3-31 Matsubara-cho, Kagoshima, Kagoshima 892-0833, Japan
| | - Sae Shinohara
- Graduate School of Health Sciences, Kumamoto University, 4-24-1 Kuhonji, Chuo-ku, Kumamoto 862-0976, Japan
| | - Fujio Araki
- Department of Health Sciences, Faculty of Life Sciences, Kumamoto University, 4-24-1 Kuhonji, Chuo-ku, Kumamoto 862-0976, Japan
| | - Yoshiharu Higashida
- Department of Radiological Technology, Faculty of Fukuoka Medical Technology, Teikyo University, 6-22 Misakimachi, Omuta, Fukuoka 836-8505, Japan
| |
Collapse
|
12
|
Mizutani K, Takamizawa T, Ishii R, Shibasaki S, Kurokawa H, Suzuki M, Tsujimoto A, Miyazaki M. Flexural Properties and Polished Surface Characteristics of a Structural Colored Resin Composite. Oper Dent 2021; 46:E117-E131. [PMID: 34370032 DOI: 10.2341/20-154-l] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/13/2020] [Indexed: 11/23/2022]
Abstract
OBJECTIVE The aim of this study was to determine the flexural properties and surface characteristics of a structural colored resin composite after different finishing and polishing methods, in comparison to those of conventional resin composites. METHODS AND MATERIALS A structural color resin composite, Omnichroma (OM, Tokuyama Corp, Chiyoda City, Tokyo, Japan), and two comparison resin composites, Filtek Supreme Ultra (FS, 3M, St Paul, MN, USA) and Tetric EvoCeram (TE, Ivoclar Vivadent, Schaan, Liechtenstein), were used. The flexural properties of the resin composites were determined in accordance with the ISO 4049 specifications. For surface properties, 70 polymerized specimens of each resin composite were prepared and divided into seven groups of 10. Surface roughness (Sa), gloss (GU), and surface free energy (SFE) were investigated after the following finishing and polishing methods. Three groups of specimens were finished with a superfine-grit diamond bur (SFD), and three with a tungsten carbide bur (TCB). After finishing, one of the two remaining groups was polished with a one-step silicone point (CMP), and the other with an aluminum oxide flexible disk (SSD). A group ground with SiC 320-grit was set as a baseline. RESULTS The average flexural strength ranged from 116.6 to 142.3 MPa in the following order with significant differences between each value: FS > TE > OM. The average E ranged from 6.8 to 13.2 GPa in the following order with significant differences between each value: FS > TE > OM. The average R ranged from 0.77 to 1.01 MJ/mm3 in the following order: OM > FS > TE. The Sa values of the OM groups polished with CMP and SSD were found to be significantly lower than those of the other resin composites, regardless of the finishing method. The GU values appeared to be dependent on the material and the finishing method used. The OM specimens polished with SSD showed significantly higher GU values than those polished with CMP. Most of the resin composites polished with SSD demonstrated significantly higher γS values compared to the other groups. Extremely strong negative correlations between Sa and GU in the combined data from the three resin composites and each resin composite and between Sa and γS in the OM specimens were observed; GU showed a strong positive correlation with γS in the same material. CONCLUSION These findings indicate that both flexural and surface properties are material dependent. Furthermore, the different finishing and polishing methods used in this study were observed to affect the Sa, GU, and SFE of the resin composites.
Collapse
|
13
|
Oku T, Kaneko Y, Ishii R, Hitomi Y, Tsuiji M, Toyoshima S, Tsuji T. Coronin-1 is phosphorylated at Thr-412 by protein kinase Cα in human phagocytic cells. Biochem Biophys Rep 2021; 27:101041. [PMID: 34189278 PMCID: PMC8220002 DOI: 10.1016/j.bbrep.2021.101041] [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: 01/18/2021] [Revised: 04/17/2021] [Accepted: 05/31/2021] [Indexed: 11/25/2022] Open
Abstract
Coronin-1, a hematopoietic cell-specific actin-binding protein, is thought to be involved in the phagocytic process through its interaction with actin filaments. The dissociation of coronin-1 from phagosomes after its transient accumulation on the phagosome surface is associated with lysosomal fusion. We previously reported that 1) coronin-1 is phosphorylated by protein kinase C (PKC), 2) coronin-1 has two phosphorylation sites, Ser-2 and Thr-412, and 3) Thr-412 of coronin-1 is phosphorylated during phagocytosis. In this study, we examined which PKC isoform is responsible for the phosphorylation of coronin-1 at Thr-412 by using isotype-specific PKC inhibitors and small interfering RNAs (siRNAs). Thr-412 phosphorylation of coronin-1 was suppressed by Gö6976, an inhibitor of PKCα and PKCβI. This phosphorylation was attenuated by siRNA for PKCα, but not by siRNA for PKCβ. Furthermore, Thr-412 of coronin-1 was phosphorylated by recombinant PKCα in vitro, but not by recombinant PKCβ. We next examined the effects of Gö6976 on the intracellular distribution of coronin-1 in HL60 cells during phagocytosis. The confocal fluorescence microscopic observation showed that coronin-1 was not dissociated from phagosomes in Gö6976-treated cells. These results indicate that phosphorylation of coronin-1 at Thr-412 by PKCα regulates intracellular distribution during phagocytosis. Phosphorylation of coronin-1 at Thr-412 is suppressed by PKCα/β inhibitor. PKCα not PKCβ phosphorylates coronin-1 at Thr-412 in vitro. Dissociation of coronin-1 from phagosome is regulated by PKCα. Phosphorylation of coronin-1 at Thr-412 may trigger phagosome maturation.
Collapse
Affiliation(s)
- Teruaki Oku
- Department of Microbiology, Hoshi University School of Pharmacy and Pharmaceutical Sciences, 2-4-41 Ebara, Shinagawa-ku, Tokyo, 142-8501, Japan
- Corresponding author.
| | - Yutaka Kaneko
- Department of Microbiology, Hoshi University School of Pharmacy and Pharmaceutical Sciences, 2-4-41 Ebara, Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Rie Ishii
- Department of Microbiology, Hoshi University School of Pharmacy and Pharmaceutical Sciences, 2-4-41 Ebara, Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Yuki Hitomi
- Department of Microbiology, Hoshi University School of Pharmacy and Pharmaceutical Sciences, 2-4-41 Ebara, Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Makoto Tsuiji
- Department of Microbiology, Hoshi University School of Pharmacy and Pharmaceutical Sciences, 2-4-41 Ebara, Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Satoshi Toyoshima
- Japan Pharmacists Education Center, 1-9-13 Akasaka, Minato-ku, Tokyo, 107-0052, Japan
| | - Tsutomu Tsuji
- Department of Microbiology, Hoshi University School of Pharmacy and Pharmaceutical Sciences, 2-4-41 Ebara, Shinagawa-ku, Tokyo, 142-8501, Japan
| |
Collapse
|
14
|
Saegusa M, Kurokawa H, Takahashi N, Takamizawa T, Ishii R, Shiratsuchi K, Miyazaki M. Evaluation of Color-matching Ability of a Structural Colored Resin Composite. Oper Dent 2021; 46:306-315. [PMID: 34411249 DOI: 10.2341/20-002-l] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/24/2020] [Indexed: 11/23/2022]
Abstract
PURPOSE The present study evaluated the color-matching ability of a structural colored resin composite to compare it with resin composites employing pigments. METHODS AND MATERIALS A structural colored resin composite (Omnichroma [OMC]), a supranano-filled resin composite (Estelite ∑ Quick [ELQ]), and a nano-filled resin composite (Filtek Supreme Ultra [FSU]) were used. Each resin composite was packed into a Teflon mold and pressed down with a clear strip under a glass slide. The specimens were light irradiated through the slide with a light-emitting diode curing unit. The thickness of the specimens (n=6) was measured with a digital caliper before being transferred to distilled water and stored at 37°C for 24 hours. The measurements of the optical characteristics of the specimens on a black-and-white background were performed using a spectrophotometer. D65 (CIE D65) was used as a light source for the spectrophotometer. Measurements were repeated three times for each specimen under each color-measurement condition, and average values for three same-shade specimens were calculated. One-way analysis of variance and Tukey post hoc tests were used (α=0.05). To determine its ability to match the color of artificial teeth, each shade of resin composite was placed in a cavity before performing color measurements. Using a spectrophotometer (CMS-35F S/C) with a flexible sensor, L*, a*, and b* values were obtained. RESULTS The spectral reflectance curve of OMC showed that it reflected light wavelengths from 430-700 nm regardless of the background color and thickness of the specimens. The percentage of reflectance of ELQ decreased near wavelengths of 550-580 nm. Regarding the influence of background color on CIE L*, a*, b* values, the L* level showed significantly higher values for all tested materials with white backgrounds, and OMC was most affected by the difference in background color. However, a* values of ELQ and FSU were significantly higher with a black background than with a white background, and OMC showed a significantly higher value with a white background than with a black background. The b* values were higher with a white background than with a black background and were significantly higher for all three products, and these tendencies were much greater for ELQ and FSU. CONCLUSIONS The ability of OMC to match the color of artificial teeth showed acceptable color compatibility, regardless of the shade of the artificial teeth and the depth of the cavity. However, ELQ and FSU showed reduced color compatibility, especially for a cavity depth of 3.0 mm. Excellent color matching ability was confirmed for the structural colored resin composite OMC, resulting in reduced color differences and therefore improving the esthetic appearance of the restoration, simplifying shade matching, and compensating for any color mismatch.
Collapse
|
15
|
Matsubayashi Y, Hamano M, Ishii R, Kitagawa K, Ishii M, Sanada T, Yoshida A. [Comparison between Variance and Edge Methods for Measuring Image Resolution Properties in Digital Mammography]. Nihon Hoshasen Gijutsu Gakkai Zasshi 2021; 77:182-190. [PMID: 33612696 DOI: 10.6009/jjrt.2021_jsrt_77.2.182] [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] [Indexed: 11/11/2022]
Abstract
We studied the image resolution properties in digital mammography using the variance and edge response function methods. The associated measurements were made using a polymethylmethacrylate phantom of 0-40 mm thickness while maintaining the incident dose to the detector constant, as well as with and without using the phantom but by varying the level of exposure to the detector. The results obtained using the two methods were compared on the object plane of the mammography unit with compensation for the magnification and rejection of the scattered radiation. In this unit, the imaging process of resolution enhancement may be performed according to the phantom thickness, shape of test device, exposure level, and so on. The modulation transfer function values of the variance method were slightly higher than those of the edge method, approximately 6% at 2 cycles/mm and 8% at 4 cycles/mm without resolution enhancement processing. We concluded that the variance method is more suitable than the edge method for the constancy test or quality control because of its lower coefficient of variation.
Collapse
Affiliation(s)
- Yukiko Matsubayashi
- Department of Radiology, Kurashiki Medical Center (Current address: Chugoku Occupational Health Association)
| | - Mizuki Hamano
- Department of Radiology, Kurashiki Medical Center (Current address: Ishizuka Breast Surgery Clinic)
| | - Rie Ishii
- Department of Radiological Technology, Faculty of Health and Welfare, Tokushima Bunri University
| | - Kaoru Kitagawa
- Department of Radiology, Kurashiki Medical Center (Current address: Center for Radiology and Radiation Oncology, Kobe University Hospital)
| | - Mie Ishii
- Department of Radiological Technology, School of Health Sciences, Gifu University of Medical Science
| | - Taizo Sanada
- Department of Radiological Technology, Okayama Saiseikai General Hospital
| | - Akira Yoshida
- Graduate School of Comprehensive Scientific Research, Prefectural University of Hiroshima
| |
Collapse
|
16
|
Araki K, Miyagawa S, Kawamura T, Ishii R, Harada A, Ueno T, Toda K, Kuratani T, Sawa Y. Autologous skeletal myoblast sheet prevents cardiomyocyte ischemia and right heart dysfunction in pressure-overloaded right heart porcine model. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.3723] [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
Introduction
Severe heart failure (HF) with congenital heart disease (CHD) have demonstrated life threatening disorder despite of remarkable progress in medical therapies. Autologous skeletal myoblast sheet transplantation therapy showed clinical efficacy for left ventricular dysfunction by cytokine paracrine effects, which are expected to be sufficiently effective against right ventricular (RV) dysfunction which is often seen in end-stage of CHD patients with severe HF.
Hypothesis
An autologous skeletal myoblast sheet transplantation alleviates RV dysfunction in a pressure-overloaded right heart in a porcine model.
Methods
Five-to-six-month-old Göttingen mini-pigs underwent pulmonary artery banding with vascular occluding system. To create the porcine model of chronic pressure-overloaded right heart, vascular occluding system was gradually inflated, over a month, to make pulmonary stenosis to banding velocity >3.0 m/s measured by echocardiography (UCG), and then fixed for another month. Two months after banding, autologous skeletal myoblast sheet was placed on the epicardium of the RV free wall and followed for 2 months. Groups were as follows: control (C, n=5), sheet implantation (S, n=5). Cardiac function was measured using UCG, cardiac computed tomography (CT), and cardiac catheterization (Cath). Two months after sheet implantation, hearts were dissected for histologic analysis.
Results
Before sheet implantation, RV dysfunction was equal in groups; however, 2 months after sheet implantation, RV dysfunction and myocardial ischemia was significantly ameliorated in group S than group C. On CT, RV ejection fraction exacerbation were well controlled in Group S compared to Group C (S 44.9±2.2 vs C 31.9±2.1% [p=0.0042]). UCG and Cath revealed well maintained systolic and diastolic function in Group S compared to Group C (Tei index: S 0.42±0.06 vs C 0.70±0.07 [p=0.0240], Fraction Area Change: S 45.8±7.8 vs C 19.5±1.3% [p=0.0240], Isovolumic Relaxation Time; S 44.3±9.2 vs C 97.3±9.5 ms [p=0.0304]). On C11-Acetate Positron Emission Tomography, myocardial ischemia was more prominent in Group C compared to Group S (K mono-Rest/Stress: S 3.17±0.69 vs C 2.03±0.65 min-1 [p=0.0421], Myocardial Blood Flow-Rest/Stress: S 3.22±0.39 vs C 2.13±0.92 min-1 [p=0.0421]). In histologic analysis, Group S presented less progressed hypertrophic change in periodic acid-Schiff stain (S 13.5±0.9 vs C 18.0±3.0 μg [p=0.0240]), anti-fibrotic changes in picrosirius red stain (S 3.0±0.3 vs C 4.2±0.2% [p=0.0421]), more angiogenesis in CD31 expression (S 18.3±1.5 vs C 10.7±2.8 / 104 μm2 [p=0.0240]), and less production of reactive oxygen species in fluorescent immunostaining (S 5.9±1.7 vs C 18.4±1.7% [p=0.0304]).
Conclusion
Autologous skeletal myoblast sheet transplantation alleviates cardiomyocyte Ischemia and RV dysfunction in a porcine model of pressure-overloaded right heart.
Funding Acknowledgement
Type of funding source: None
Collapse
Affiliation(s)
- K Araki
- Osaka University, Osaka, Japan
| | | | | | - R Ishii
- Osaka University, Osaka, Japan
| | | | - T Ueno
- Osaka University, Osaka, Japan
| | - K Toda
- Osaka University, Osaka, Japan
| | | | - Y Sawa
- Osaka University, Osaka, Japan
| |
Collapse
|
17
|
Ishibuchi K, Fujii K, Otsuji S, Takiuchi S, Hasegawa K, Tamaru H, Ishii R, Yasuda S, Nakabayashi S, Yamamoto W, Kusumoto H, Taniguchi Y, Kakishita M, Shimatani Y, Higashino Y. Influence of caffeine intake on intravenous adenosine-induced fractional flow reserve. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1394] [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
This study evaluated whether caffeine abstention is required before fractional flow reserve (FFR) measurement by intravenous adenosine triphosphate (ATP) administration in Japanese patients.
Methods and results
This study was a subanalysis of a previously published study and a total of 208 intermediate lesions that underwent FFR measurements were enrolled for this analysis. Hyperemia was induced by continuous intravenous ATP infusion at 150μg/kg/min (IVATP150) and 210μg/kg/min (IVATP210), and by intracoronary administration of nicorandil 2mg (ICNIC2mg) as a reference standard. The degree of change in the FFR value both after IVATP150 and after IVATP210, as compared with the FFR value after ICNIC2mg was similar between the caffeine and non-caffeine groups (−0.04±0.05 vs. −0.04±0.07, and 0.00±0.02 vs. 0.01±0.02, respectively). In patients who consumed caffeine before the FFR measurement, the degree of FFR change was independent of the time interval (<12 hours, 12–24 hours, and 24–48 hours) between caffeine intake and catheterization both after IVATP150 and ICNIC2mg and after IVATP210 and ICNIC2mg.
Conclusion
When compared with the FFR value after ICNIC2mg, the degree of change in the FFR value both after IVATP150 and after IVATP210 remained similar regardless of caffeine intake. Strict caffeine abstention before intravenous ATP-induced FFR measurement may not be required in clinical practice.
Funding Acknowledgement
Type of funding source: None
Collapse
Affiliation(s)
- K Ishibuchi
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - K Fujii
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - S Otsuji
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - S Takiuchi
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - K Hasegawa
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - H Tamaru
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - R Ishii
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - S Yasuda
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - S Nakabayashi
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - W Yamamoto
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - H Kusumoto
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - Y Taniguchi
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - M Kakishita
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - Y Shimatani
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - Y Higashino
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| |
Collapse
|
18
|
Saito K, Ishii J, Naniwa M, Ishii R, Kato M, Kondo T, Sakurai H, Taniguchi M, Hashiguchi S, Hayashi T, Ito R. Residual Analysis of Aflatoxins in Spice by HPLC Coupled with Solid-Phase Dispersive Extraction and Solid-Phase Fluorescence Derivatization Method. J AOAC Int 2020; 103:1521-1527. [PMID: 33247756 DOI: 10.1093/jaoacint/qsaa077] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Revised: 04/18/2020] [Accepted: 06/03/2020] [Indexed: 11/12/2022]
Abstract
BACKGROUND Aflatoxins (AFs) are carcinogenic mycotoxins. A simple, quick, and accurate method for the micro-analysis of AFs in foodstuffs, especially spices, is needed. OBJECTIVE A sophisticated pretreatment method that combines solid-phase dispersive extraction (SPDE) and solid-phase fluorescence derivatization using immunoaffinity (IA) gel as the solid phase was developed to analyze AFs in spices simply, quickly, and sensitively by liquid chromatography with fluorescence detection. METHOD White and black pepper samples were extracted with a mixed solution of methanol/water (4:1) and then diluted with 7% aqueous solution of Triton-X. The solution was subjected to cleanup by SPDE using IA gel. Trifluoroacetic acid was added to the IA gel for on-site solid-phase fluorescence derivatization. RESULTS Chromatograms containing well-separated peaks and few interference peaks from contaminants were obtained. The method detection limit of AFs in white and black pepper was 0.15-0.29 ng/g. Repeatability and intermediate precision were <10% and <15%, respectively, and accuracy was 61.7-87.8%. In addition, inter-laboratory precision was <29% and mean recovery was 61.5-76.7%. A favorable z-score of |Z| ≦ 1 was obtained in seven laboratories, although one laboratory gave 2 < |Z| < 3. CONCLUSIONS The validity, reliability, practicality, and robustness of the developed method were verified. HIGHLIGHTS By using SPDE and solid-phase fluorescence derivatization in combination for AF analysis, fluorescence derivatization during cleanup was realized, leading to simplification of the pretreatment operation.
Collapse
Affiliation(s)
- Koichi Saito
- Hoshi University, Faculty of Pharmaceutical Sciences, Department of Analytical Chemistry, 2-4-41, Ebara, Shinagawa-ku, Tokyo 142-8501, Japan
| | - Junki Ishii
- Hoshi University, Faculty of Pharmaceutical Sciences, Department of Analytical Chemistry, 2-4-41, Ebara, Shinagawa-ku, Tokyo 142-8501, Japan
| | - Misaki Naniwa
- Hoshi University, Faculty of Pharmaceutical Sciences, Department of Analytical Chemistry, 2-4-41, Ebara, Shinagawa-ku, Tokyo 142-8501, Japan
| | - Rie Ishii
- Saitama Institute of Public Health, Saitama, Japan
| | - Mihoko Kato
- Frontier Institute Co., Ltd, Ishikari, Hokkaido, Japan
| | - Takahide Kondo
- Saitama City Institute of Health Science and Research, Saitama¸ Japan
| | | | | | | | - Takako Hayashi
- Kanagawa Prefectural Institute of Public Health, Kanagawa, Japan
| | - Rie Ito
- Hoshi University, Faculty of Pharmaceutical Sciences, Department of Analytical Chemistry, 2-4-41, Ebara, Shinagawa-ku, Tokyo 142-8501, Japan
| |
Collapse
|
19
|
Kafar A, Ishii R, Gibasiewicz K, Matsuda Y, Stanczyk S, Schiavon D, Grzanka S, Tano M, Sakaki A, Suski T, Perlin P, Funato M, Kawakami Y. Above 25 nm emission wavelength shift in blue-violet InGaN quantum wells induced by GaN substrate misorientation profiling: towards broad-band superluminescent diodes. Opt Express 2020; 28:22524-22539. [PMID: 32752512 DOI: 10.1364/oe.394580] [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] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Accepted: 06/15/2020] [Indexed: 06/11/2023]
Abstract
We report a thorough study of InGaN quantum wells spatially modified by varying the local misorientation of the GaN substrate prior to the epitaxial growth of the structure. More than 25 nm shift of emission wavelength was obtained, which is attributed to indium content changes in the quantum wells. Such an active region is promising for broadening of the emission spectrum of (In,Al,Ga)N superluminescent diodes. We observed that the light intensity changes with misorientation, being stable around 0.5° to 2° and decreasing above 2°. This relation can be used as a base for future device designing.
Collapse
|
20
|
Akiba Y, Ikenoue S, Endo T, Kasuga Y, Ochiai D, Miyakoshi K, Ishii R, Yakubo K, Tanaka M. Differences in fetal fractional limb volume changes in normal and gestational diabetic pregnancies: an exploratory observational study. BJOG 2020; 128:329-335. [PMID: 32298518 DOI: 10.1111/1471-0528.16265] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 04/07/2020] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Fetal fractional limb volume has been proposed as a useful measure for quantifying fetal soft tissue development. The aim of this study was to investigate the growth of fractional arm volume (AVol) and fractional thigh volume (TVol) of fetuses with maternal gestational diabetes (GDM) compared with those of fetuses with normal glucose tolerance (NGT). We hypothesised fetal fractional limb volume would be larger in the GDM group than in the NGT group in late gestation. DESIGN Exploratory observational study. SETTING Saitama Municipal Hospital. SAMPLE A total of 165 (125 NGT and 40 GDM) singleton Japanese pregnant women. METHODS AVol and TVol were assessed between 20 and 37 weeks' gestation as cylindrical limb volumes based on 50% of the fetal humeral or femoral diaphysis length. Women were diagnosed as GDM based on the criteria of the Japan Society of Obstetrics and Gynecology. MAIN OUTCOME MEASURES AVol and TVol were compared between women with NGT and those with GDM at each gestational age period (2-week intervals from 20 to 37 weeks' gestation). RESULTS Overall, 287 ultrasound scans were performed (NGT group, 205 scans; GDM group, 82 scans). There was no significant difference of AVol between the groups before 32 weeks' gestation. AVol was significantly larger in the GDM group than in the NGT group after 32 weeks' gestation (P < 0.05). TVol was not statistically different between the groups across gestation. CONCLUSIONS Detection of variations in fetal AVol may provide greater insight into understanding the origins of altered fetal body proportion in GDM. TWEETABLE ABSTRACT AVol, but not TVol, is significantly larger in fetuses with GDM than in those with NGT after 32 weeks' gestation.
Collapse
Affiliation(s)
- Y Akiba
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan.,Department of Obstetrics and Gynecology, Saitama Municipal Hospital, Saitama, Japan
| | - S Ikenoue
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan
| | - T Endo
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan.,Department of Obstetrics and Gynecology, Saitama Municipal Hospital, Saitama, Japan
| | - Y Kasuga
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan
| | - D Ochiai
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan
| | - K Miyakoshi
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan
| | - R Ishii
- Biostatistics Unit, Clinical and Translational Research Center, Keio University School of Medicine, Tokyo, Japan
| | - K Yakubo
- Department of Obstetrics and Gynecology, Saitama Municipal Hospital, Saitama, Japan
| | - M Tanaka
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan
| |
Collapse
|
21
|
Kazemi R, Rostami R, Dehghan S, Lotfollahzadeh S, Nasiri Z, Rostami M, Ikeda S, Ishii R, L.Hadipour A. P61 Theta and alpha frequency rTMS modulates theta lagged phase synchronization in dorsal attention and default mode network. Clin Neurophysiol 2020. [DOI: 10.1016/j.clinph.2019.12.172] [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: 11/26/2022]
|
22
|
Torigoe F, Ishida H, Ishii Y, Ishii R, Narita J, Kawazu Y, Kayatani F, Inamura N. Fetal echocardiographic prediction score for perinatal mortality in tricuspid valve dysplasia and Ebstein's anomaly. Ultrasound Obstet Gynecol 2020; 55:226-232. [PMID: 31008542 DOI: 10.1002/uog.20302] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 01/31/2019] [Revised: 04/12/2019] [Accepted: 04/15/2019] [Indexed: 06/09/2023]
Abstract
OBJECTIVES Tricuspid valve dysplasia (TVD) and Ebstein's anomaly (EA) diagnosed by fetal echocardiography vary greatly in terms of clinical severity and prognosis. The Celermajer index and Simpson-Andrews-Sharland (SAS) score have been reported previously for the prediction of prognosis in cases of TVD/EA; however, they do not take into account the hemodynamic impact of left ventricular (LV) function, which has recently been implicated as being important in the pathophysiology of TVD/EA. The aim of this study was to develop a novel scoring system that includes LV function for the prediction of perinatal death in fetuses diagnosed with TVD/EA. METHODS The clinical records of 36 fetuses diagnosed prenatally with TVD/EA between 2000 and 2015 in our hospital were reviewed. Univariate analysis was used to assess the association between perinatal death (defined as death between 22 weeks' gestation and 4 weeks after delivery) and gestational age at diagnosis, cardiothoracic area ratio (CTAR), degree of pulmonary artery flow, direction of ductal flow, right-to-left ventricular diameter ratio, tricuspid regurgitation (TR) maximum velocity, Celermajer index, SAS score and LV-Tei index. A new prognostic score, the TRIPP score (TRIcuspid malformation Prognosis Prediction score), was developed using the parameters found to be associated significantly with perinatal death. The predictive value of this score was assessed in an additional nine fetuses diagnosed with TVD/EA. RESULTS Thirty-six fetuses were diagnosed prenatally with TVD/EA, two of which were terminated, one was lost to follow-up and two died before 22 weeks' gestation. Of the 31 included fetuses, 10 (32%) died in the perinatal period. Univariate analysis demonstrated that TR maximum velocity was significantly lower (2.22 ± 0.17 m/s vs 3.26 ± 0.12 m/s; P < 0.001) and SAS score was significantly higher (5.7 ± 0.6 points vs 2.8 ± 0.4 points; P = 0.0014) in cases of perinatal death than in surviving fetuses. The degree of pulmonary artery flow and the direction of ductal flow were also associated significantly with perinatal death (P < 0.01 for both). Notably, LV-Tei index was significantly higher in cases of perinatal death than in surviving fetuses (0.81 ± 0.08 vs 0.50 ± 0.05; P < 0.001). In contrast, there was no significant difference in Celermajer index, CTAR or right-to-left ventricular diameter ratio. Finally, we established a novel combinatorial scoring system, the TRIPP score, including the four significant factors: TR maximum velocity, pulmonary artery flow, direction of ductal flow and LV-Tei index. The TRIPP score was found to predict efficiently perinatal mortality in fetuses with TVD/EA. CONCLUSIONS Our novel combinatorial score of echocardiographic parameters, the TRIPP score, including LV-Tei index, is easy to measure and provides a good tool for the prediction of perinatal mortality in fetuses diagnosed prenatally with TVD/EA. Copyright © 2019 ISUOG. Published by John Wiley & Sons Ltd.
Collapse
Affiliation(s)
- F Torigoe
- Department of Pediatrics, Osaka University Graduate School of Medicine, Osaka, Japan
- Pediatric Cardiology, Osaka Women's and Children's Hospital, Osaka, Japan
| | - H Ishida
- Department of Pediatrics, Osaka University Graduate School of Medicine, Osaka, Japan
- Pediatric Cardiology, Osaka Women's and Children's Hospital, Osaka, Japan
| | - Y Ishii
- Pediatric Cardiology, Osaka Women's and Children's Hospital, Osaka, Japan
| | - R Ishii
- Department of Pediatrics, Osaka University Graduate School of Medicine, Osaka, Japan
- Pediatric Cardiology, Osaka Women's and Children's Hospital, Osaka, Japan
| | - J Narita
- Department of Pediatrics, Osaka University Graduate School of Medicine, Osaka, Japan
- Pediatric Cardiology, Osaka Women's and Children's Hospital, Osaka, Japan
| | - Y Kawazu
- Pediatric Cardiology, Osaka Women's and Children's Hospital, Osaka, Japan
- Department of Pediatrics, Toyonaka Municipal Hospital, Osaka, Japan
| | - F Kayatani
- Pediatric Cardiology, Osaka Women's and Children's Hospital, Osaka, Japan
| | - N Inamura
- Pediatric Cardiology, Osaka Women's and Children's Hospital, Osaka, Japan
- Department of Pediatrics, Kindai University Faculty of Medicine, Osaka, Japan
| |
Collapse
|
23
|
Ishii R, Takamizawa T, Tsujimoto A, Suzuki S, Imai A, Barkmeier WW, Latta MA, Miyazaki M. Effects of Finishing and Polishing Methods on the Surface Roughness and Surface Free Energy of Bulk-fill Resin Composites. Oper Dent 2019; 45:E91-E104. [PMID: 31738697 DOI: 10.2341/18-246-l] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The purpose of this study was to determine the influence of finishing and polishing methods on surface properties of bulk-fill resin composites through surface roughness (Ra) and surface free energy (SFE) measurements, and scanning electron microscopy (SEM) observations. Three bulk-fill resin composites, Tetric EvoCeram Bulk Fill (TB), Filtek Bulk Fill (FB), and Filtek Bulk Fill Flowable Restorative (FF), and two conventional resin composites, Clearfil AP-X (AP) and Estelite ∑ Quick (EQ) were used. Seventy cured specimens of each resin composite were prepared and divided into seven groups of 10 specimens. Ra, SFE measurements, and SEM observations were conducted after finishing and polishing procedures. Three groups of specimens were finished with a fine grit diamond bur (FDB), and three with a tungsten carbide bur (CBB). After finishing, one group from each type of finishing was polished with aluminum oxide flexible disks (SSD) and one group from each type of finishing was polished with diamond particles embedded in a silicone point (CMP). A baseline group of samples that were neither finished nor polished after removing the translucent strips from the surface was examined. Although the baseline group showed significantly lower Ra values than the other groups, most resin composites showed lower Ra values with CBB+SSD than with the other finishing and polishing groups. Among the tested resin composites, EQ showed significantly lower Ra values than the other resin composites, regardless of the finishing and polishing methods. On the other hand, AP showed significantly higher Ra values than the other resin composites in all finishing and polishing groups, apart from FB with FDB. For the finished specimens, most resin composites showed higher SFE values with CBB than with FDB. For the polished specimens, all the tested resin composites with CMP showed lower γS values than those with SSD, regardless of the finishing method. The baseline groups of TB and FB showed significantly lower SFE values than the other finished and polished groups. In the SEM observations, all the examined resin composites showed rougher surfaces after finishing with FDB than with CBB. However, when comparing the different polishing methods (CMP and SSD), surface smoothness appeared to be material dependent.
Collapse
|
24
|
Saito T, Takamizawa T, Ishii R, Tsujimoto A, Hirokane E, Barkmeier WW, Latta MA, Miyazaki M. Influence of Application Time on Dentin Bond Performance in Different Etching Modes of Universal Adhesives. Oper Dent 2019; 45:183-195. [PMID: 31567054 DOI: 10.2341/19-028-l] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
We attempted to determine the effect of universal adhesive application time on dentin bond performance in different etching modes based on shear bond strength (SBS) tests and surface free energy (SFE) measurements. The five universal adhesives used were Adhese Universal (AU), Clearfil Universal Bond Quick (CQ), G-Premio Bond (GP), Scotchbond Universal (SU), and Tokuyama Universal Bond (TU). Bovine dentin specimens were divided into four groups of 10 for each adhesive. SBS and SFE were determined after applying the following surface treatments: 1) self-etch (SE) mode with immediate air blowing after adhesive application (IA treatment), 2) SE mode with prolonged application time (PA treatment), 3) etch-and-rinse (ER) mode with IA treatment, and 4) ER mode with PA treatment. Bonded specimens were subjected to SBS testing. The SFE of adhesive-treated dentin surfaces was measured after rinsing with acetone and water. Three-way analysis of variance revealed that dentin SBS values (p<0.001) were significantly influenced by the factors of adhesive type and application duration, but the factor of pre-etching was not significant (p=0.985). The manufacturer's instructions require longer application times for AU and SU, which showed significantly lower SBS values in IA than in PA treatment in both etching modes. However, the difference in the other adhesives was not significant between the IA and PA treatments in either etching mode. The total SFE (γS) was dependent on the adhesive and etching mode. The γS value of the initial group (SiC paper ground group) at baseline was 69.5 (mN·m-1) and that of the pre-etching group at baseline was 30.6 (mN·m-1). For all the adhesives, γS in SE mode showed significantly higher values than in ER mode, regardless of the application time. In SE mode, almost all universal adhesives tested showed lower γS values in PA treatment than in IA treatment. For ER mode, all the adhesives showed significantly higher γS values than those of the pre-etching baseline, regardless of the application time. Most adhesives did not show any significant differences in γS values between IA and PA treatments, regardless of etching mode.
Collapse
|
25
|
Hasegawa Y, Ishii R, Kyutoku Y, Dan I, Rousseau B. Biases in paired preference tests: Cross‐cultural comparison of Japanese and American consumers. J SENS STUD 2019. [DOI: 10.1111/joss.12498] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yuka Hasegawa
- Faculty of Science and EngineeringChuo University Tokyo Japan
| | - Rie Ishii
- Davis Sensory Institute Davis California
| | - Yasushi Kyutoku
- Faculty of Science and EngineeringChuo University Tokyo Japan
| | - Ippeita Dan
- Faculty of Science and EngineeringChuo University Tokyo Japan
| | | |
Collapse
|
26
|
Moritake N, Takamizawa T, Ishii R, Tsujimoto A, Barkmeier WW, Latta MA, Miyazaki M. Effect of Active Application on Bond Durability of Universal Adhesives. Oper Dent 2019; 44:188-199. [DOI: 10.2341/17-384-l] [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: 11/23/2022]
Abstract
SUMMARY
The purpose of this study was to determine the effect of different adhesive application methods and etching modes on the dentin bond durability of universal adhesives under thermal cycling (TC). All-Bond Universal (Bisco), Adhese Universal (Ivoclar Vivadent), and Scotchbond Universal (3M ESPE) were used as adhesives. In total, 600 bovine teeth with exposed dentin were divided into 12 groups according to the type of adhesive and subjected to the following bonding procedures: 1) etch-and-rinse mode with active application; 2) etch-and-rinse mode with inactive application; 3) self-etch mode with active application; and 4) self-etch mode with inactive application. Bonded specimens were stored in distilled water at 37°C for 24 hours and then subjected to 5000, 10,000, 30,000, or 50,000 TC between 5°C and 55°C before shear bond strength (SBS) testing, creating a division into a total of five different storage conditions. Baseline specimens were stored in distilled water at 37°C for 24 hours. The SBS test was performed at a cross-head speed of 1.0 mm/min. Three-way analysis of variance revealed that all the factors of application mode, adhesive, and thermal cycle period significantly influenced the SBS values (p<0.001), regardless of the etching mode. In the baseline groups, all of the tested adhesives with active application had higher SBS values than those with inactive application, regardless of etching mode. In the TC groups, significantly lower SBS values were observed at 50,000 TC with inactive application compared to those with active application, regardless of the etching mode. From the scanning electron microscopy observation of demineralized and deproteinized resin/dentin interfaces, dense resin tags longer than 50 μm were observed in the etch-and-rinse with active application group. On the other hand, the resin tags in self-etch mode were sparse, thin, and much shorter than those in etch-and-rinse mode. Comparing the penetration status of the resin tags with active and inactive application in self-etch mode, the resin tag penetration with inactive application was much lower than that with active application. Active application is effective in enhancing the dentin bond durability of universal adhesives. When using universal adhesives with different etching modes, practitioners should select the optimal etching mode and appropriate application method in accordance with the cavity conditions.
Collapse
Affiliation(s)
- N Moritake
- Nobuyuki Moritake, DDS, Department of Operative Dentistry, Nihon University Graduate School of Dentistry, Tokyo, Japan
| | - T Takamizawa
- Toshiki Takamizawa, DDS, PhD, Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
| | - R Ishii
- Ryo Ishii, DDS, PhD, Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
| | - A Tsujimoto
- Akimasa Tsujimoto, DDS, PhD, Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
| | - WW Barkmeier
- Wayne W Barkmeier, DDS, MS, Department of General Dentistry, Creighton University School of Dentistry, Omaha, NE, USA
| | - MA Latta
- Mark A Latta, DMD, MS, Department of General Dentistry, Creighton University School of Dentistry, Omaha, NE, USA
| | - M Miyazaki
- Masashi Miyazaki, DDS, PhD, Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
| |
Collapse
|
27
|
Hasegawa K, Yamamoto W, Ishibuchi K, Ishii R, Otsuji S, Higashino Y. P3190Investigating the optimal projection direction for treating bifurcated lesions in the left anterior descending arteries and diagonal branches based on coronary computed tomography angiography. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3190] [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)
- K Hasegawa
- Higashi Takarazuka Satoh Hospital, Department of Cardiology, Takarazuka, Japan
| | - W Yamamoto
- Higashi Takarazuka Satoh Hospital, Department of Cardiology, Takarazuka, Japan
| | - K Ishibuchi
- Higashi Takarazuka Satoh Hospital, Department of Cardiology, Takarazuka, Japan
| | - R Ishii
- Higashi Takarazuka Satoh Hospital, Department of Cardiology, Takarazuka, Japan
| | - S Otsuji
- Higashi Takarazuka Satoh Hospital, Department of Cardiology, Takarazuka, Japan
| | - Y Higashino
- Higashi Takarazuka Satoh Hospital, Department of Cardiology, Takarazuka, Japan
| |
Collapse
|
28
|
Tamaru H, Fujii K, Otsuji S, Takiuchi S, Hasegawa K, Ishibuchi K, Ishii R, Yamamoto W, Nakabayashi S, Kakishita M, Ibuki M, Nagayama N, Higashino Y. P3667Prediction of functional ischemia using resting distal coronary pressure to aortic pressure ratio in individual coronary artery. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3667] [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)
- H Tamaru
- Higashi Takarazuka Satoh Hospital, Department of Cardiology, Takarazuka, Japan
| | - K Fujii
- Higashi Takarazuka Satoh Hospital, Department of Cardiology, Takarazuka, Japan
| | - S Otsuji
- Higashi Takarazuka Satoh Hospital, Department of Cardiology, Takarazuka, Japan
| | - S Takiuchi
- Higashi Takarazuka Satoh Hospital, Department of Cardiology, Takarazuka, Japan
| | - K Hasegawa
- Higashi Takarazuka Satoh Hospital, Department of Cardiology, Takarazuka, Japan
| | - K Ishibuchi
- Higashi Takarazuka Satoh Hospital, Department of Cardiology, Takarazuka, Japan
| | - R Ishii
- Higashi Takarazuka Satoh Hospital, Department of Cardiology, Takarazuka, Japan
| | - W Yamamoto
- Higashi Takarazuka Satoh Hospital, Department of Cardiology, Takarazuka, Japan
| | - S Nakabayashi
- Higashi Takarazuka Satoh Hospital, Department of Cardiology, Takarazuka, Japan
| | - M Kakishita
- Higashi Takarazuka Satoh Hospital, Department of Cardiology, Takarazuka, Japan
| | - M Ibuki
- Higashi Takarazuka Satoh Hospital, Department of Cardiology, Takarazuka, Japan
| | - N Nagayama
- Higashi Takarazuka Satoh Hospital, Department of Cardiology, Takarazuka, Japan
| | - Y Higashino
- Higashi Takarazuka Satoh Hospital, Department of Cardiology, Takarazuka, Japan
| |
Collapse
|
29
|
Yamamoto W, Fujii K, Otsuji S, Takiuchi S, Kakishita M, Ibuki M, Hasegawa K, Nagayama S, Ishibuchi K, Tamaru H, Ishii R, Nakabayashi S, Higashino Y. P2766Qualitative and quantitative assessment of in-stent restenosis lesions after balloon dilation by optical coherence tomography. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2766] [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)
- W Yamamoto
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - K Fujii
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - S Otsuji
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - S Takiuchi
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - M Kakishita
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - M Ibuki
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - K Hasegawa
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - S Nagayama
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - K Ishibuchi
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - H Tamaru
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - R Ishii
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - S Nakabayashi
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - Y Higashino
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| |
Collapse
|
30
|
Ishibuchi K, Fujii K, Otsuji S, Takiuchi S, Ibuki M, Kakishita M, Hasegawa K, Nagayama S, Tamaru H, Ishii R, Nakabayashi S, Yamamoto W, Higashino Y. P5590The incidence and clinical impact of peri-stent contrast staining after first, second, and third-generation drug-eluding stent implantation. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p5590] [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: 11/12/2022] Open
Affiliation(s)
- K Ishibuchi
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - K Fujii
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - S Otsuji
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - S Takiuchi
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - M Ibuki
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - M Kakishita
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - K Hasegawa
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - S Nagayama
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - H Tamaru
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - R Ishii
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - S Nakabayashi
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - W Yamamoto
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - Y Higashino
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| |
Collapse
|
31
|
Narita J, Kogaki S, Ishigaki S, Torigoe F, Ishii R, Ishida H, Ozono K, Taira M, Ueno T, Sawa Y. Prolonged but Successful Weaning from Berlin Heart EXCOR After a Long-term Mechanical Unloading in Infantile DCM. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.1058] [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: 10/17/2022] Open
|
32
|
Kim HJ, Chung SJ, Kim KO, Nielsen B, Ishii R, O'Mahony M. A cross-cultural study of acceptability and food pairing for hot sauces. Appetite 2018; 123:306-316. [PMID: 29325771 DOI: 10.1016/j.appet.2018.01.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Revised: 01/04/2018] [Accepted: 01/04/2018] [Indexed: 10/18/2022]
Abstract
This study was conducted to understand the acceptance levels of hot sauces among consumers from different culinary cultures. Two newly developed hot sauces [fermented red chili pepper with soybean-paste-based sauce(GS) and fermented red chili-pepper-based sauce(KS)] were compared with Tabasco sauce(TB) and Sriracha sauce(SR). Two separate cross-cultural home-use tests(HUTs) were conducted: pizza and cream soup were provided as food items in HUT 1, whereas grilled chicken wings and rice noodle soup were provided in HUT 2. Consumers residing in Denmark, South Korea, and US participated in each HUT (n≅100 per country). Acceptance levels and the reasons for (dis)liking particular hot sauces applied to food systems were assessed. The food items that paired well with different hot sauces when the sauces were applied freely to regular meals were also analyzed among the US and Korean subjects. When the hot-sauce samples were applied to pizza and cream soup, the preferred order of the samples exhibited a cross-cultural agreement (GS = KS > TB). In the case of grilled chicken and rice noodle soup, the acceptance rating was similar for the three types of hot sauces among Koreans, whereas the acceptance was higher for SR among the US subjects for both foodstuffs, while Danish subjects preferred GS and KS over SR. The US subjects did not like hot-sauce samples with sweet and weak spiciness, whereas the Korean and Danish subjects disliked the hot-sauce sample when it was too spicy and not sufficiently sweet. These findings indicate that the matching of particular sauces with specific food items is culture-dependent, and this needs to be considered when trying to export food products such as hot sauce to other countries.
Collapse
Affiliation(s)
- Hyun-Jee Kim
- Department of Nutritional Science and Food Management, Ewha Womans University, Ewhayeodae-gil 52, Seodaemun-Gu, Seoul 03760, Republic of Korea
| | - Seo-Jin Chung
- Department of Nutritional Science and Food Management, Ewha Womans University, Ewhayeodae-gil 52, Seodaemun-Gu, Seoul 03760, Republic of Korea.
| | - Kwang-Ok Kim
- Department of Food Science and Engineering, Ewha Womans University, Ewhayeodae-gil 52, Seodaemun-Gu, Seoul 03760, Republic of Korea
| | - Belinda Nielsen
- Department of Food Science, University of Copenhagen, Rolighedsvej 30, DK-1958 Frederiksberg, Denmark
| | - Rie Ishii
- Department of Food Science and Technology, University of California, Davis, CA 95616, USA
| | - Michael O'Mahony
- Department of Food Science and Technology, University of California, Davis, CA 95616, USA
| |
Collapse
|
33
|
Kuroda K, Tomita T, Suzuki MT, Bareille C, Nugroho AA, Goswami P, Ochi M, Ikhlas M, Nakayama M, Akebi S, Noguchi R, Ishii R, Inami N, Ono K, Kumigashira H, Varykhalov A, Muro T, Koretsune T, Arita R, Shin S, Kondo T, Nakatsuji S. Evidence for magnetic Weyl fermions in a correlated metal. Nat Mater 2017; 16:1090-1095. [PMID: 28967918 DOI: 10.1038/nmat4987] [Citation(s) in RCA: 115] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Accepted: 08/21/2017] [Indexed: 06/07/2023]
Abstract
Weyl fermions have been observed as three-dimensional, gapless topological excitations in weakly correlated, inversion-symmetry-breaking semimetals. However, their realization in spontaneously time-reversal-symmetry-breaking phases of strongly correlated materials has so far remained hypothetical. Here, we report experimental evidence for magnetic Weyl fermions in Mn3Sn, a non-collinear antiferromagnet that exhibits a large anomalous Hall effect, even at room temperature. Detailed comparison between angle-resolved photoemission spectroscopy (ARPES) measurements and density functional theory (DFT) calculations reveals significant bandwidth renormalization and damping effects due to the strong correlation among Mn 3d electrons. Magnetotransport measurements provide strong evidence for the chiral anomaly of Weyl fermions-namely, the emergence of positive magnetoconductance only in the presence of parallel electric and magnetic fields. Since weak magnetic fields (approximately 10 mT) are adequate to control the distribution of Weyl points and the large fictitious fields (equivalent to approximately a few hundred T) produced by them in momentum space, our discovery lays the foundation for a new field of science and technology involving the magnetic Weyl excitations of strongly correlated electron systems such as Mn3Sn.
Collapse
Affiliation(s)
- K Kuroda
- Institute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, Japan
| | - T Tomita
- Institute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, Japan
- CREST, Japan Science and Technology Agency (JST), 4-1-8 Honcho Kawaguchi, Saitama 332-0012, Japan
| | - M-T Suzuki
- CREST, Japan Science and Technology Agency (JST), 4-1-8 Honcho Kawaguchi, Saitama 332-0012, Japan
- RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - C Bareille
- Institute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, Japan
| | - A A Nugroho
- Institute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, Japan
- Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jl. Ganesha 10, 40132 Bandung, Indonesia
| | - P Goswami
- Condensed Matter Theory Center and Joint Quantum Institute, Department of Physics, University of Maryland, College Park, Maryland 20742- 4111, USA
- Department of Physics and Astronomy, 2145 Sheridan Road, Evanston, Illinois 60208, USA
| | - M Ochi
- Department of Physics, Osaka University, Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - M Ikhlas
- Institute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, Japan
- CREST, Japan Science and Technology Agency (JST), 4-1-8 Honcho Kawaguchi, Saitama 332-0012, Japan
| | - M Nakayama
- Institute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, Japan
| | - S Akebi
- Institute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, Japan
| | - R Noguchi
- Institute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, Japan
| | - R Ishii
- Institute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, Japan
| | - N Inami
- Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - K Ono
- Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - H Kumigashira
- Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - A Varykhalov
- Helmholtz-Zentrum Berlin für Materialien und Energie, Elektronenspeicherring BESSY II, Albert-Einstein-Strasse 15, 12489 Berlin, Germany
| | - T Muro
- Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo, Hyogo 679-5198, Japan
| | - T Koretsune
- CREST, Japan Science and Technology Agency (JST), 4-1-8 Honcho Kawaguchi, Saitama 332-0012, Japan
- RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - R Arita
- CREST, Japan Science and Technology Agency (JST), 4-1-8 Honcho Kawaguchi, Saitama 332-0012, Japan
- RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - S Shin
- Institute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, Japan
| | - Takeshi Kondo
- Institute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, Japan
| | - S Nakatsuji
- Institute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, Japan
- CREST, Japan Science and Technology Agency (JST), 4-1-8 Honcho Kawaguchi, Saitama 332-0012, Japan
| |
Collapse
|
34
|
Niwa F, Kondo M, Ishii R, Yamada T, Yamaguchi T, Mizuno T, Nakagawa M. The survey about cognitive decline in the presenile residents in Tango, Kyoto. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3270] [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]
|
35
|
Seki Y, Miyasaka Y, Suzuki S, Wada K, Yasuda SP, Matsuoka K, Ohshiba Y, Endo K, Ishii R, Shitara H, Kitajiri SI, Nakagata N, Takebayashi H, Kikkawa Y. A novel splice site mutation of myosin VI in mice leads to stereociliary fusion caused by disruption of actin networks in the apical region of inner ear hair cells. PLoS One 2017; 12:e0183477. [PMID: 28832620 PMCID: PMC5568226 DOI: 10.1371/journal.pone.0183477] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 08/04/2017] [Indexed: 01/03/2023] Open
Abstract
An unconventional myosin encoded by the myosin VI gene (MYO6) contributes to hearing loss in humans. Homozygous mutations of MYO6 result in nonsyndromic profound congenital hearing loss, DFNB37. Kumamoto shaker/waltzer (ksv) mice harbor spontaneous mutations, and homozygous mutants exhibit congenital defects in balance and hearing caused by fusion of the stereocilia. We identified a Myo6c.1381G>A mutation that was found to be a p.E461K mutation leading to alternative splicing errors in Myo6 mRNA in ksv mutants. An analysis of the mRNA and protein expression in animals harboring this mutation suggested that most of the abnormal alternatively spliced isoforms of MYO6 are degraded in ksv mice. In the hair cells of ksv/ksv homozygotes, the MYO6 protein levels were significantly decreased in the cytoplasm, including in the cuticular plates. MYO6 and stereociliary taper-specific proteins were mislocalized along the entire length of the stereocilia of ksv/ksv mice, thus suggesting that MYO6 attached to taper-specific proteins at the stereociliary base. Histological analysis of the cochlear hair cells showed that the stereociliary fusion in the ksv/ksv mutants, developed through fusion between stereociliary bundles, raised cuticular plate membranes in the cochlear hair cells and resulted in incorporation of the bundles into the sheaths of the cuticular plates. Interestingly, the expression of the stereociliary rootlet-specific TRIO and F-actin binding protein (TRIOBP) was altered in ksv/ksv mice. The abnormal expression of TRIOBP suggested that the rootlets in the hair cells of ksv/ksv mice had excessive growth. Hence, these data indicated that decreased MYO6 levels in ksv/ksv mutants disrupt actin networks in the apical region of hair cells, thereby maintaining the normal structure of the cuticular plates and rootlets, and additionally provided a cellular basis for stereociliary fusion in Myo6 mutants.
Collapse
Affiliation(s)
- Yuta Seki
- Mammalian Genetics Project, Department of Genome Medicine, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Yuki Miyasaka
- Mammalian Genetics Project, Department of Genome Medicine, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan.,Division of Experimental Animals, Center for Promotion of Medical Research and Education, Graduate School of Medicine, Nagoya University, Nagoya, Aichi, Japan
| | - Sari Suzuki
- Mammalian Genetics Project, Department of Genome Medicine, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Kenta Wada
- Mammalian Genetics Project, Department of Genome Medicine, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan.,Laboratory of Animal Biotechnology, Department of Bioproduction, Faculty of Bioindustry, Tokyo University of Agriculture, Abashiri, Hokkaido, Japan
| | - Shumpei P Yasuda
- Mammalian Genetics Project, Department of Genome Medicine, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Kunie Matsuoka
- Mammalian Genetics Project, Department of Genome Medicine, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Yasuhiro Ohshiba
- Mammalian Genetics Project, Department of Genome Medicine, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Kentaro Endo
- Histology Laboratory, Advanced Technical Support Department, Center for Basic Technology Research, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Rie Ishii
- Laboratory for Transgenic Technology, Animal Research Division, Center for Basic Technology Research, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Hiroshi Shitara
- Laboratory for Transgenic Technology, Animal Research Division, Center for Basic Technology Research, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Shin-Ichiro Kitajiri
- Department of Otolaryngology-Head and Neck Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Naomi Nakagata
- Division of Reproductive Engineering, Center for Animal Resources and Development (CARD), Kumamoto University, Kumamoto, Japan
| | - Hirohide Takebayashi
- Division of Neurobiology and Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Yoshiaki Kikkawa
- Mammalian Genetics Project, Department of Genome Medicine, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| |
Collapse
|
36
|
Maekawa R, Ito R, Iwasaki Y, Saito K, Akutsu K, Takatori S, Ishii R, Kondo F, Arai Y, Ohgane J, Shiota K, Makino T, Sugino N. Evidence of exposure to chemicals and heavy metals during pregnancy in Japanese women. Reprod Med Biol 2017; 16:337-348. [PMID: 29259487 PMCID: PMC5715897 DOI: 10.1002/rmb2.12049] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [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: 05/15/2017] [Accepted: 07/09/2017] [Indexed: 01/24/2023] Open
Abstract
Purpose Prenatal exposure to environmental chemicals is a growing concern, because such exposures have been shown to be associated with various diseases. The levels of chemicals and heavy metals in maternal blood, cord blood, maternal urine and amniotic fluid in Japanese pregnant women were investigated. Methods A total of 145 women, including 14 fetal growth restriction cases, were included in the present study. The levels of phthalates (di[2‐ethylhexyl]phthalate and mono[2‐ethylhexyl]phthalate), perfluorinated compounds (perfluorooctane sulfonate, perfluorohexanoic acid, perfluorooctanoic acid, and perfluorononanoic acid), pesticides (dimethylphosphate, dimethylthiophosphate, diethylphosphate, diethylthiophosphate, 3‐phenoxybenzoic acid, and octachlorodipropyl ether), bisphenol A, nicotine (nicotine, nornicotine, cotinine, norcotinine, and trans‐3’‐hydroxycotinine), polybrominated diphenyl ethers, and heavy metals were measured. The relationship between fetal growth and the levels of chemicals and heavy metals were investigated. Results Phthalates, perfluorinated compounds, pesticides, polybrominated diphenyl ethers, and heavy metals were detected in high frequency, whereas nicotine and bisphenol A were almost negative. Phthalates, perfluorinated compounds, and several heavy metals were transferred to the fetus. High perfluorononanoic acid levels in the maternal blood and cord blood, and low perfluorooctanoic acid level in the cord blood were significantly and negatively associated with fetal growth. Conclusions The present study showed that pregnant women in Japan and their fetuses are exposed to a variety of chemicals and heavy metals.
Collapse
Affiliation(s)
- Ryo Maekawa
- Department of Obstetrics and Gynecology Yamaguchi University Graduate School of Medicine Ube Japan
| | - Rie Ito
- Faculty of Pharmaceutical Sciences Department of Analytical Chemistry Hoshi University Tokyo Japan
| | - Yusuke Iwasaki
- Faculty of Pharmaceutical Sciences Department of Analytical Chemistry Hoshi University Tokyo Japan
| | - Koichi Saito
- Faculty of Pharmaceutical Sciences Department of Analytical Chemistry Hoshi University Tokyo Japan
| | - Kazuhiko Akutsu
- Division of Food Chemistry Osaka Institute of Public Health Osaka Japan
| | - Satoshi Takatori
- Division of Food Chemistry Osaka Institute of Public Health Osaka Japan
| | - Rie Ishii
- Saitama Prefectural Institute of Public Health Saitama Japan
| | - Fumio Kondo
- School of Medicine Department of Pharmacology Aichi Medical University Aichi Japan
| | - Yoshikazu Arai
- Laboratory of Genomic Function Engineering School of Agriculture Department of Life Science Meiji University Kawasaki Japan
| | - Jun Ohgane
- Laboratory of Genomic Function Engineering School of Agriculture Department of Life Science Meiji University Kawasaki Japan
| | - Kunio Shiota
- Department of Chemistry and Biochemistry Waseda University Tokyo Japan
| | | | - Norihiro Sugino
- Department of Obstetrics and Gynecology Yamaguchi University Graduate School of Medicine Ube Japan
| |
Collapse
|
37
|
Fujii K, Otsuji S, Yamamoto W, Takiuchi S, Hasegawa K, Ishibuchi K, Tamaru H, Ishii R, Yabuki M, Ibuki M, Nagayama S, Higashino Y. 109Influence of optical coherence tomography derived neointimal tissue morphology on development process of very late in-stent restenosis after drug-eluting stent: four serial coronary arteriograms study. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.109] [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: 11/13/2022] Open
|
38
|
Yamamoto W, Fujii K, Otsuji S, Takiuchi S, Hasegawa K, Ishibuchi K, Tamaru H, Ishii R, Yabuki M, Ibuki M, Nagayama S, Higashino Y. P528Optical coherence tomography patterns of in-stent restenosis after drug-eluting stent implantation: a novel classification and its clinical significance. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.p528] [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: 11/14/2022] Open
|
39
|
Yamamoto W, Fujii K, Otsuji S, Takiuchi S, Hasegawa K, Ishibuchi K, Tamaru H, Ishii R, Yabuki M, Ibuki M, Nagayama S, Higashino N. P6105Potential contribution of organized thrombus to the development of neoatherosclerotic neointima after drug-eluting stent implantation. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p6105] [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: 11/13/2022] Open
|
40
|
Ishibuchi K, Fujii K, Otsuji S, Takiuchi S, Hasegawa K, Tamaru H, Ishii R, Yamamoto W, Yabuki M, Ibuki M, Nagayama S, Higashino Y. P490Clinical utility of noninvasive peri-stent contrast staining derived from coronary computed tomographic angiograms for lesions after coronary stent implantation. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.p490] [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: 11/13/2022] Open
|
41
|
Cui C, Piao Y, Michel M, Campbell D, Ishii R, Sharov A, Schlessinger D. 843 miRNAs are required for post-induction stage sweat gland development. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.02.869] [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: 10/19/2022]
|
42
|
Yoshida H, Ebina T, Arai K, Kobata T, Ishii R, Aizawa T, Suzuki A. Development of water vapor transmission rate measuring device using a quadrupole mass spectrometer and standard gas barrier films down to the 10 -6 g m -2 day -1 level. Rev Sci Instrum 2017; 88:043301. [PMID: 28456255 DOI: 10.1063/1.4980074] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Water vapor transmission rate (WVTR) measuring devices with a quadrupole mass spectrometer (QMS) have an advantage in measuring low WVTRs because measurements are taken under an extremely low background of water vapor by realizing ultrahigh vacuum conditions. Here, the reliability of the QMS measurements was improved by including a porous plug with known molecular conductance in the device to generate a reference molar flux for in situ QMS calibration. Then, standard gas barrier (SGB) films made from a clay-polyimide nanocomposite film were also developed and used to validate the measurement. The measurement results for the SGB films were on the extrapolated calibration curve obtained with the porous plug down to WVTR at the 10-6 g m-2 day-1 level within the estimated measurement uncertainty.
Collapse
Affiliation(s)
- H Yoshida
- AIST, National Metrology Institute of Japan, Tsukuba, Japan
| | - T Ebina
- AIST, Research Institute for Chemical Process Technology, Sendai, Japan
| | - K Arai
- AIST, National Metrology Institute of Japan, Tsukuba, Japan
| | - T Kobata
- AIST, National Metrology Institute of Japan, Tsukuba, Japan
| | - R Ishii
- AIST, Research Institute for Chemical Process Technology, Sendai, Japan
| | - T Aizawa
- AIST, Research Institute for Chemical Process Technology, Sendai, Japan
| | - A Suzuki
- AIST, Research Institute for Chemical Process Technology, Sendai, Japan
| |
Collapse
|
43
|
Hasegawa K, Shishikura D, Ishibuchi K, Otsuji S, Takiuchi S, Yabuki M, Asano K, Ibuki M, Nagayama S, Kashiyama T, Fujino A, Ishii R, Higashino Y. A New Method for Treating Acute Coronary Syndrome: The Combination of Excimer Laser Coronary Atherectomy and Filter Devices. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.061] [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: 11/27/2022]
|
44
|
Nagami A, Ishii M, Ishii R, Kodama S, Sanada T, Yoshida A. [Comparison of Contrast to Noise Ratio and Signal Difference to Noise Ratio Based on QA and QC Guidelines in CR Mammography]. Nihon Hoshasen Gijutsu Gakkai Zasshi 2016; 72:503-513. [PMID: 27320154 DOI: 10.6009/jjrt.2016_jsrt_72.6.503] [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: 06/06/2023]
Abstract
The measurement methods of contrast to noise ratio (CNR) and signal difference to noise ratio (SDNR) in digital mammography are different among several quality assurance (QA) guidelines, that is, the type of pixel value (PV), phantom shape, location of aluminum plate, and the size of region of interest (ROI) principally differ in data acquisition. We compared CNR (SDNR) obtained from three QA guidelines. They are the European Reference Organisation for Quality Assured Breast Screening and Diagnostic Services (EUREF), the International Electrotechnical Commission (IEC), and the International Atomic Energy Agency (IAEA). In EUREF and IEC, CNR was calculated using linearized pixel value (LPV). In IAEA, because the type of pixel value to use in SDNR was not specified, SDNR was calculated using PV and LPV, and CNR was calculated using LPV. Target/filter combinations are molybdenum/molybdenum (Mo/Mo) and molybdenum/rhodium (Mo/Rh). Applied various tube voltages are 25, 30, and 35 kV, and various phantom thicknesses are 20, 45, and 70 mm of polymethyl methacrylate (PMMA). The PV-SDNR of IAEA showed the largest value among the three methods, following LPV-CNR of IEC, LPV-CNR of EUREF at 20 mm PMMA thickness. In IAEA, SDNR changed by the kind of pixel value (PV or LPV). When CNR is calculated, every researcher should describe the type of guidelines, the kind of pixel value, and formula for calculation.
Collapse
Affiliation(s)
- Akiko Nagami
- Department of Radiology, Shimane University Hospital (Current address: Division of Clinical Radiology, Tottori University Hospital)
| | | | | | | | | | | |
Collapse
|
45
|
Moriwaki A, Ishii M, Terazono S, Arao K, Ishii R, Sanada T, Yoshida A. [Influence of Detector Radiation Damage on CR Mammography Quality Control]. Nihon Hoshasen Gijutsu Gakkai Zasshi 2016; 72:424-9. [PMID: 27211088 DOI: 10.6009/jjrt.2016_jsrt_72.5.424] [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] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Recently, radiation damage to the detector apparatus employed in computed radiography (CR) mammography has become problematic. The CR system and the imaging plate (IP) applied to quality control (QC) program were also used in clinical mammography in our hospital, and the IP to which radiation damage has occurred was used for approximately 5 years (approximately 13,000 exposures). We considered using previously acquired QC image data, which is stored in a server, to investigate the influence of radiation damage to an IP. The mammography unit employed in this study was a phase contrast mammography (PCM) Mermaid (KONICA MINOLTA) system. The QC image was made newly, and it was output in the film, and thereafter the optical density of the step-phantom image was measured. An input (digital value)-output (optical density) conversion curve was plotted using the obtained data. The digital values were then converted to optical density values using a reference optical density vs. digital value curve. When a high radiation dose was applied directly, radiation damage occurred at a position on the IP where no object was present. Daily QC for mammography is conducted using an American College of Radiology (ACR) accreditation phantom and acrylic disc, and an environmental background density measurement is performed as one of the management indexes. In this study, the radiation damage sustained by the acrylic disc was shown to differ from that of the background. Thus, it was revealed that QC results are influenced by radiation damage.
Collapse
|
46
|
Hirai T, Ishii R, Miyairi S, Ikemiyagi M, Omoto K, Ishii Y, Tanabe K. Clonal Deletion Established via Invariant NKT Cell Activation and Costimulatory Blockade Requires In Vivo Expansion of Regulatory T Cells. Am J Transplant 2016; 16:426-39. [PMID: 26495767 DOI: 10.1111/ajt.13493] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Revised: 08/12/2015] [Accepted: 08/17/2015] [Indexed: 01/25/2023]
Abstract
Recently, the immune-regulating potential of invariant natural killer T (iNKT) cells has attracted considerable attention. We previously reported that a combination treatment with a liposomal ligand for iNKT cells and an anti-CD154 antibody in a sublethally irradiated murine bone marrow transplant (BMT) model resulted in the establishment of mixed hematopoietic chimerism through in vivo expansion of regulatory T cells (Tregs). Herein, we show the lack of alloreactivity of CD8(+) T cells in chimeras and an early expansion of donor-derived dendritic cells (DCs) in the recipient thymi accompanied by a sequential reduction in the donor-reactive Vβ-T cell receptor repertoire, suggesting a contribution of clonal deletion in this model. Since thymic expansion of donor DCs and the reduction in the donor-reactive T cell repertoire were precluded with Treg depletion, we presumed that Tregs should preform before the establishment of clonal deletion. In contrast, the mice thymectomized before BMT failed to increase the number of Tregs and to establish CD8(+) T cell tolerance, suggesting the presence of mutual dependence between the thymic donor-DCs and Tregs. These results provide new insights into the regulatory mechanisms that actively promote clonal deletion.
Collapse
Affiliation(s)
- T Hirai
- Department of Urology, Tokyo Women's Medical University, Tokyo, Japan
| | - R Ishii
- Department of Urology, Tokyo Women's Medical University, Tokyo, Japan
| | - S Miyairi
- Department of Urology, Tokyo Women's Medical University, Tokyo, Japan
| | - M Ikemiyagi
- Department of Urology, Tokyo Women's Medical University, Tokyo, Japan
| | - K Omoto
- Department of Urology, Tokyo Women's Medical University, Tokyo, Japan
| | - Y Ishii
- Laboratory for Vaccine Design, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - K Tanabe
- Department of Urology, Tokyo Women's Medical University, Tokyo, Japan
| |
Collapse
|
47
|
Imai K, Onoue K, Ishii R, Takano M, Nemoto S, Teshima R. [Development of Determination Method of Ipfencarbazone in Agricultural Products, Livestock Products and Seafood by LC-MS/MS]. Shokuhin Eiseigaku Zasshi 2015; 56:205-10. [PMID: 26537650 DOI: 10.3358/shokueishi.56.205] [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] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A method for the determination of ipfencarbazone in agricultural products, livestock products and seafood by LC-MS/MS was developed. Agricultural samples were extracted with acetone. An aliquot of crude extract was partitioned with n-hexane and sat. sodium chloride solution. Clean-up was performed using GC/PSA and C18 cartridges. In the case of livestock products and seafood, samples were extracted with a mixture of acetone and n-hexane, and the organic layer was collected. After acetonitrile-hexane partitioning, the extract was cleaned up using PAS and C18 cartridges. The gradient LC separation was performed on a C18 column with acetonitrile-water containing acetic acid as a mobile phase, and MS with positive ion electrospray ionization was used for detection. The average recoveries (n=5) of ipfencarbazone from 16 kinds of agricultural products, livestock products and seafood spiked at the MRLs or at the uniform limits (0.01 ppm) were 73-101%, and the relative standard deviations were 1.3-5.1%. The limit of quantitation of the developed method was 0.01 mg/kg for ipfencarbazone.
Collapse
Affiliation(s)
- Koichi Imai
- Saitama Prefectural Institute of Public Health
| | | | | | | | | | | |
Collapse
|
48
|
Choi JH, Gwak MJ, Chung SJ, Kim KO, O'Mahony M, Ishii R, Bae YW. Identifying the drivers of liking by investigating the reasons for (dis)liking using CATA in cross-cultural context: a case study on barbecue sauce. J Sci Food Agric 2015; 95:1613-1625. [PMID: 25092220 DOI: 10.1002/jsfa.6860] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [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: 05/21/2014] [Revised: 07/23/2014] [Accepted: 07/28/2014] [Indexed: 06/03/2023]
Abstract
BACKGROUND The present study cross-culturally investigated the drivers of liking for traditional and ethnic chicken marinades using descriptive analysis and consumer taste tests incorporating the check-all-that-apply (CATA) method. Seventy-three Koreans and 86 US consumers participated. The tested sauces comprised three tomato-based sauces, a teriyaki-based sauce and a Korean spicy seasoning-based sauce. Chicken breasts were marinated with each of the five barbecue sauces, grilled and served for evaluation. Descriptive analysis and consumer taste tests were conducted. Consumers rated the acceptance on a hedonic scale and checked the reasons for (dis)liking by the CATA method for each sauce. A general linear model, multiple factor analysis and chi-square analysis were conducted using the data. RESULTS The results showed that the preference orders of the samples between Koreans and US consumers were strikingly similar to each other. However, the reasons for (dis)liking the samples differed cross-culturally. The drivers of liking of two sauces sharing relatively similar sensory profiles but differing significantly in hedonic ratings were effectively delineated by reasons of (dis)liking CATA results. CONCLUSION Reasons for (dis)liking CATA proved to be a powerful supporting method to understand the internal drivers of liking which can be overlooked by generic descriptive analysis.
Collapse
Affiliation(s)
- Ji-Hye Choi
- Department of Nutritional Science and Food Management, Ewha Womans University, Seoul, 120-750, South Korea
| | | | | | | | | | | | | |
Collapse
|
49
|
Chiba M, Toki A, Sugiyama A, Suganuma R, Osawa S, Ishii R, Nakagami T, Suzuki J, Watarai Y, Kawano S, Suzuki K. Urethral caruncle in a 9-year-old girl: a case report and review of the literature. J Med Case Rep 2015; 9:71. [PMID: 25884921 PMCID: PMC4404654 DOI: 10.1186/s13256-015-0518-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Accepted: 01/08/2015] [Indexed: 11/15/2022] Open
Abstract
Introduction Urethral caruncles are the most frequent benign tumors of the female urethra. Most of them are found in post-menopausal women, and they are rare in childhood. Only a few pediatric cases have been published in the literature. In this report, we present an unusual case of a pediatric patient with a urethral caruncle, along with a review of the literature. Case presentation A 9-year-old Mongolian girl was referred to our hospital with a 2-week history of frequent adherence of a small amount of blood to her underwear. We found a sessile smooth margin, a clear boundary and an elastic, soft red tumor over the entire circumference of the urethral meatus. At the beginning, because of the child’s age, urethral prolapse was suspected. There was no response after 3 weeks of conservative treatment with steroid ointment. With the patient under general anesthesia, a partial tumor resection was performed for the purpose of histological examination. The tumor excision was limited to about 1/2 laps of the urethral meatus to prevent the development of urethral stricture. On the basis of clinical and histopathological examinations, a diagnosis of a urethral caruncle was made. Post-operatively, steroid ointment application to residual masses was continued, and these disappeared about 6 months later. Our patient was free of recurrence and had had no complications after 3 years of follow-up. Conclusions Urethral caruncles are rare in children, and the possibility of malignancy is slight during this period. Biopsy of the mass is not required for diagnosis. It should be indicated only if the mass has other characteristics that raise suspicion of malignancy. In previously reported cases, all of the tumor was removed. However, the trigger of the caruncle in childhood is chronic inflammation. Conservative therapy with steroid ointment should be the core treatment. However, it may be necessary to proceed to treatment because caruncles take a long time to heal. The case that we describe in this report will serve as an example for similar cases in the future.
Collapse
Affiliation(s)
- Masahiro Chiba
- Division of Pediatric Surgery, Department of Surgery, Showa University School of Medicine, Showa University Hospital, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8666, Japan.
| | - Akira Toki
- Division of Pediatric Surgery, Department of Surgery, Showa University School of Medicine, Showa University Hospital, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8666, Japan.
| | - Akihide Sugiyama
- Division of Pediatric Surgery, Department of Surgery, Showa University School of Medicine, Showa University Hospital, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8666, Japan.
| | - Rie Suganuma
- Division of Pediatric Surgery, Department of Surgery, Showa University School of Medicine, Showa University Hospital, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8666, Japan.
| | - Shunsuke Osawa
- Division of Pediatric Surgery, Department of Surgery, Showa University School of Medicine, Showa University Hospital, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8666, Japan.
| | - Rie Ishii
- Division of Pediatric Surgery, Department of Surgery, Showa University School of Medicine, Showa University Hospital, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, 142-8666, Japan.
| | - Tomokazu Nakagami
- Children's Medical Center, Showa University Northern Yokohama Hospital, 35-1 Chigasaki-chuo, Tsuzuki-ku, Yokohama-shi, Kanagawa-ken, 224-8503, Japan.
| | - Junichi Suzuki
- Children's Medical Center, Showa University Northern Yokohama Hospital, 35-1 Chigasaki-chuo, Tsuzuki-ku, Yokohama-shi, Kanagawa-ken, 224-8503, Japan.
| | - Yu Watarai
- Children's Medical Center, Showa University Northern Yokohama Hospital, 35-1 Chigasaki-chuo, Tsuzuki-ku, Yokohama-shi, Kanagawa-ken, 224-8503, Japan.
| | - Shinya Kawano
- Children's Medical Center, Showa University Koto Toyosu Hospital, 5-1-38 Toyosu, Kouto-ku, Tokyo, 135-8577, Japan.
| | - Koumei Suzuki
- Children's Medical Center, Showa University Koto Toyosu Hospital, 5-1-38 Toyosu, Kouto-ku, Tokyo, 135-8577, Japan.
| |
Collapse
|
50
|
Ishii R, Shimizu K, Igarashi A, Kobashi H, Kamiya K. Influence of Femtosecond Lenticule Extraction and Small Incision Lenticule Extraction on Corneal Nerve Density and Ocular Surface: A 1-Year Prospective, Confocal, Microscopic Study. J Refract Surg 2015; 31:10-5. [DOI: 10.3928/1081597x-20141218-01] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Accepted: 10/28/2014] [Indexed: 11/20/2022]
|