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Okodo M, Okayama K, Teruya K, Shinohara R, Mizuno S, Settsu R, Ishii Y, Fujii M, Kimura H, Oda M. Cytological features of human papillomavirus-infected immature squamous metaplastic cells from cervical intraepithelial neoplasia grade 2. J Med Virol 2023; 95:e29311. [PMID: 38100627 DOI: 10.1002/jmv.29311] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 11/14/2023] [Accepted: 11/28/2023] [Indexed: 12/17/2023]
Abstract
In reflex cytology, the presence of prominent nucleoli in immature metaplastic squamous cells (IM) may be underdiagnosed due to variations in interpretation. The aim of this study is to identify human papillomaviruses (HPVs) that infect IM clusters in cervical intraepithelial neoplasia 2 (CIN2) on Papanicolaou (Pap) smears to determine the cytological features of lesion-derived cells. Thirty-two patients with a simultaneous diagnosis of CIN2 on biopsy and high-grade squamous intraepithelial lesions (HSIL) on cytology as well as with IM clusters on HSIL smears were included. CIN2 tissues and HSIL and IM clusters on Pap smears were isolated by manual microdissection, and HPV types were identified by PCR-based genotyping. The nuclear area within the IM clusters was also measured. The median nuclear area of HPV-negative IM clusters was 48 μm2 , with a coefficient of variation (CV) of 0.20; those of HPV-positive clusters were 66 μm2 and 0.34, respectively. The cut-off values of the nuclear area and CV for HPV positivity were 62 μm2 and 0.25, respectively. IM clusters composed of cells with a nuclear area of more than twice that of neutrophils or cells with a wide variation in nuclear sizes are likely to be neoplastic cells caused by HPV.
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Affiliation(s)
- Mitsuaki Okodo
- Department of Medical Technology, Faculty of Health Sciences, Kyorin University, Tokyo, Japan
| | - Kaori Okayama
- Department of Health Science, Gunma Paz University Graduate School of Health Sciences, Takasaki, Gunma, Japan
| | - Koji Teruya
- Department of Health and Welfare, Faculty of Health Sciences, Kyorin University, Tokyo, Japan
| | - Ruku Shinohara
- Department of Medical Technology, Faculty of Health Sciences, Kyorin University, Tokyo, Japan
| | - Shuichi Mizuno
- Department of Medical Technology, Faculty of Health Sciences, Kyorin University, Tokyo, Japan
| | - Rei Settsu
- Department of Medical Technology, Faculty of Health Sciences, Kyorin University, Tokyo, Japan
| | - Yasuyoshi Ishii
- Department of Clinical Laboratory, Genki Plaza Medical Center for Health Care, Tokyo, Japan
| | - Masahiko Fujii
- Department of Clinical Laboratory, Genki Plaza Medical Center for Health Care, Tokyo, Japan
| | - Hirokazu Kimura
- Department of Health Science, Gunma Paz University Graduate School of Health Sciences, Takasaki, Gunma, Japan
| | - Mizue Oda
- Department of Gynecology, Genki Plaza Medical Center for Health Care, Tokyo, Japan
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Okayama K, Kakinuma M, Tajima S, Nagasawa N, Ishii Y, Oda M, Kimura H, Okodo M. Optimal Papanicolaou Smear Conditions for Manual Microdissection of Single Target Cells. Microorganisms 2023; 11:2700. [PMID: 38004711 PMCID: PMC10672744 DOI: 10.3390/microorganisms11112700] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 10/27/2023] [Accepted: 11/02/2023] [Indexed: 11/26/2023] Open
Abstract
This study aimed to investigate the optimal conditions for Papanicolaou (Pap) smear to increase the success rate of target cell isolation through manual microdissection (MMD) and prevent cell spread. Pap smears were prepared using an HPV42-positive SurePath™ liquid-based cytology case, and 46 and 50 koilocytes were used in wet and dried Pap smears, respectively, to verify the success rate of target cell isolation using MMD based on the HPV detection rate. During MMD, the microscopic examination of both specimens revealed that cells in dried smears could be easily identified; however, cell debris remained in the surrounding area after MMD. Although it was difficult to observe cells in wet smears, there was no cell debris. When the needle tip was immersed in DNA lysate after cell isolation through MMD, a difference in cell solubility was found between dry and wet smears. HPV42 was detected in 94.7% and 97.4% of dried and wet Pap smears, respectively, via polymerase chain reaction genotyping using lysed cell solution; the detection rates were not significantly different. The isolation of target cells from wet Pap smears using MMD reduced the risk of contamination and increased the success rate of HPV detection. This study might facilitate the identification of new CIN-derived HPV-infected cells using MMD with wet Pap smears.
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Affiliation(s)
- Kaori Okayama
- Department of Medical Technology, Faculty of Health Sciences, Gunma Paz University, 1-7-1 Tonyamachi, Takasaki-shi 370-0006, Gunma, Japan
| | - Mao Kakinuma
- Department of Medical Technology, Faculty of Health Sciences, Gunma Paz University, 1-7-1 Tonyamachi, Takasaki-shi 370-0006, Gunma, Japan
| | - Saki Tajima
- Department of Medical Technology, Faculty of Health Sciences, Gunma Paz University, 1-7-1 Tonyamachi, Takasaki-shi 370-0006, Gunma, Japan
| | - Norika Nagasawa
- Department of Medical Technology, Faculty of Health Sciences, Gunma Paz University, 1-7-1 Tonyamachi, Takasaki-shi 370-0006, Gunma, Japan
| | - Yasuyoshi Ishii
- Genki Plaza Medical Center for Health Care, 3-6-5 Iidabashi, Chiyoda-ku, Tokyo 102-0072, Japan
| | - Mizue Oda
- Genki Plaza Medical Center for Health Care, 3-6-5 Iidabashi, Chiyoda-ku, Tokyo 102-0072, Japan
| | - Hirokazu Kimura
- Department of Medical Technology, Faculty of Health Sciences, Gunma Paz University, 1-7-1 Tonyamachi, Takasaki-shi 370-0006, Gunma, Japan
| | - Mitsuaki Okodo
- Department of Medical Technology, Faculty of Health Sciences, Kyorin University, 5-4-1 Shimorenjaku, Mitaka-shi, Tokyo 181-8621, Japan
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Sato T, Yamaguchi T, Aoki K, Kajiwara C, Kimura S, Maeda T, Yoshizawa S, Sasaki M, Murakami H, Hisatsune J, Sugai M, Ishii Y, Tateda K, Urita Y. Whole-genome sequencing analysis of molecular epidemiology and silent transmissions causing meticillin-resistant Staphylococcus aureus bloodstream infections in a university hospital. J Hosp Infect 2023; 139:141-149. [PMID: 37301229 DOI: 10.1016/j.jhin.2023.05.014] [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: 03/03/2023] [Revised: 05/25/2023] [Accepted: 05/26/2023] [Indexed: 06/12/2023]
Abstract
BACKGROUND The emergence of novel genomic-type clones, such as community-associated meticillin-resistant Staphylococcus aureus (MRSA) and livestock-associated MRSA, and their invasion into hospitals have become major concerns worldwide; however, little information is available regarding the prevalence of MRSA in Japan. Whole-genome sequencing (WGS) has been conducted to analyse various pathogens worldwide. Therefore, it is important to establish a genome database of clinical MRSA isolates available in Japan. AIM A molecular epidemiological analysis of MRSA strains isolated from bloodstream-infected patients in a Japanese university hospital was conducted using WGS and single-nucleotide polymorphism (SNP) analysis. Additionally, through a review of patients' clinical characteristics, the effectiveness of SNP analysis as a tool for detecting silent nosocomial transmission that may be missed by other methods was evaluated in diverse settings and various time points of detection. METHODS Polymerase-chain-reaction-based staphylococcal cassette chromosome mec (SCCmec) typing was performed using 135 isolates obtained between 2014 and 2018, and WGS was performed using 88 isolates obtained between 2015 and 2017. FINDINGS SCCmec type II strains, prevalent in 2014, became rare in 2018, whereas the prevalence of SCCmec type IV strains increased from 18.75% to 83.87% of the population, and became the dominant clones. Clonal complex (CC) 5 CC8 and CC1 were detected between 2015 and 2017, with CC1 being dominant. In 88 cases, SNP analyses revealed nosocomial transmissions among 20 patients which involved highly homologous strains. CONCLUSIONS Routine monitoring of MRSA by whole-genome analysis is effective not only for gaining knowledge regarding molecular epidemiology, but also for detecting silent nosocomial transmission.
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Affiliation(s)
- T Sato
- Department of General Medicine and Emergency Care, Toho University Graduate School of Medicine, Tokyo, Japan; Department of General Medicine and Emergency Care, Toho University Omori Medical Centre, Tokyo, Japan.
| | - T Yamaguchi
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, Tokyo, Japan.
| | - K Aoki
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, Tokyo, Japan
| | - C Kajiwara
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, Tokyo, Japan
| | - S Kimura
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, Tokyo, Japan
| | - T Maeda
- Department of General Medicine and Emergency Care, Toho University Omori Medical Centre, Tokyo, Japan
| | - S Yoshizawa
- Department of Clinical Laboratories, Toho University Omori Medical Centre, Tokyo, Japan
| | - M Sasaki
- Department of Clinical Laboratories, Toho University Omori Medical Centre, Tokyo, Japan
| | - H Murakami
- Department of Clinical Laboratories, Toho University Omori Medical Centre, Tokyo, Japan
| | - J Hisatsune
- National Institute of Infectious Diseases, Tokyo, Japan
| | - M Sugai
- National Institute of Infectious Diseases, Tokyo, Japan
| | - Y Ishii
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, Tokyo, Japan
| | - K Tateda
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, Tokyo, Japan; Department of Clinical Laboratories, Toho University Omori Medical Centre, Tokyo, Japan
| | - Y Urita
- Department of General Medicine and Emergency Care, Toho University Omori Medical Centre, Tokyo, Japan
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Okodo M, Okayama K, Sasagawa T, Teruya K, Settsu R, Mizuno S, Ishii Y, Oda M. Preferential Tissue Sites of Different Cancer-Risk Groups of Human Papillomaviruses. Int J Mol Sci 2023; 24:13151. [PMID: 37685959 PMCID: PMC10487609 DOI: 10.3390/ijms241713151] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 08/19/2023] [Accepted: 08/22/2023] [Indexed: 09/10/2023] Open
Abstract
The oncogenic potential of human papillomavirus (HPV) may be used to determine the tissue tropism of each HPV type. Cervical cancer develops in the squamo-columar junction of the cervices, and most lesions are induced by high-risk (HR) HPV types. This suggests that HR types preferentially infect the cervix, whereas the preferential infection site for low-risk (LR) types is not well defined. The determination of HPV tropism when using cytology samples can be uncertain since it is difficult to avoid contamination of cell samples between the cervix and the vagina. Herein, cell samples were carefully collected by independently scraping the cervix and vagina, after which the HPV types were determined. HPV tissue tropism was determined by considering what HPV types were positive at only one of the sites (the cervix or the vagina) as the viruses that preferentially infected that site. This method revealed that all LR types were only identified in vaginal samples, whereas 87% of HR types were identified in cervical sites. Thus, LR types may preferentially infect the vagina, whereas HR types infect the cervix. These findings suggest that preferential tissue tropism of certain HPV types is a probable factor for malignant progression.
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Affiliation(s)
- Mitsuaki Okodo
- Department of Medical Technology, Faculty of Health Sciences, Kyorin University, 5-4-1 Shimorenjaku, Mitaka-shi 181-8621, Tokyo, Japan; (R.S.); (S.M.)
| | - Kaori Okayama
- Department of Health Science, Gunma Paz University Graduate School of Health Sciences, 1-7-1 Tonyamachi, Takasaki-shi 370-0006, Gunma, Japan;
| | - Toshiyuki Sasagawa
- Department of Obstetrics and Gynecology, Kanazawa Medical University, 1-1 Uchinadadaigaku, Kahoku-gun, Kanazawa 920-0293, Ishikawa, Japan;
| | - Koji Teruya
- Department of Health and Welfare, Faculty of Health Sciences, Kyorin University, 5-4-1 Shimorenjaku, Mitaka-shi 181-8621, Tokyo, Japan;
| | - Rei Settsu
- Department of Medical Technology, Faculty of Health Sciences, Kyorin University, 5-4-1 Shimorenjaku, Mitaka-shi 181-8621, Tokyo, Japan; (R.S.); (S.M.)
| | - Shuichi Mizuno
- Department of Medical Technology, Faculty of Health Sciences, Kyorin University, 5-4-1 Shimorenjaku, Mitaka-shi 181-8621, Tokyo, Japan; (R.S.); (S.M.)
| | - Yasuyoshi Ishii
- Department of Clinical Laboratory, Genki Plaza Medical Center for Health Care, 1-7-1 Jinbocho, Chiyoda-ku 101-0051, Tokyo, Japan;
| | - Mizue Oda
- Department of Gynecology, Genki Plaza Medical Center for Health Care, 1-105 Jinbocho, Chiyoda-ku 101-0051, Tokyo, Japan;
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Nomura T, Corboz P, Miyata A, Zherlitsyn S, Ishii Y, Kohama Y, Matsuda YH, Ikeda A, Zhong C, Kageyama H, Mila F. Unveiling new quantum phases in the Shastry-Sutherland compound SrCu 2(BO 3) 2 up to the saturation magnetic field. Nat Commun 2023; 14:3769. [PMID: 37355682 DOI: 10.1038/s41467-023-39502-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Accepted: 06/13/2023] [Indexed: 06/26/2023] Open
Abstract
Under magnetic fields, quantum magnets often undergo exotic phase transitions with various kinds of order. The discovery of a sequence of fractional magnetization plateaus in the Shastry-Sutherland compound SrCu2(BO3)2 has played a central role in the high-field research on quantum materials, but so far this system could only be probed up to half the saturation value of the magnetization. Here, we report the first experimental and theoretical investigation of this compound up to the saturation magnetic field of 140 T and beyond. Using ultrasound and magnetostriction techniques combined with extensive tensor-network calculations (iPEPS), several spin-supersolid phases are revealed between the 1/2 plateau and saturation (1/1 plateau). Quite remarkably, the sound velocity of the 1/2 plateau exhibits a drastic decrease of -50%, related to the tetragonal-to-orthorhombic instability of the checkerboard-type magnon crystal. The unveiled nature of this paradigmatic quantum system is a new milestone for exploring exotic quantum states of matter emerging in extreme conditions.
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Affiliation(s)
- T Nomura
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba, Japan.
- Tokyo Denki University, Adachi, Tokyo, Japan.
| | - P Corboz
- Institute for Theoretical Physics and Delta Institute for Theoretical Physics, University of Amsterdam, XH, Amsterdam, The Netherlands.
| | - A Miyata
- Hochfeld-Magnetlabor Dresden (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - S Zherlitsyn
- Hochfeld-Magnetlabor Dresden (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany
| | - Y Ishii
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba, Japan
| | - Y Kohama
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba, Japan
| | - Y H Matsuda
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba, Japan
| | - A Ikeda
- Department of Engineering Science, University of Electro-Communications, Chofu, Tokyo, Japan
| | - C Zhong
- Graduate School of Engineering, Kyoto University, Nishikyouku, Kyoto, Japan
- Department of Applied Chemistry, Ritsumeikan University, Kusatsu, Shiga, Japan
| | - H Kageyama
- Graduate School of Engineering, Kyoto University, Nishikyouku, Kyoto, Japan
| | - F Mila
- Institute of Theoretical Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
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Obayashi K, Kodate N, Kondo H, Okamoto Y, Kaneko H, Ishii Y, Nonoda T, Masuyama S. 14 EXAMINING THE IMPACT OF SAFETY MONITORING DEVICES ON CARE WORK AND PROCESSES IN JAPANESE NURSING HOMES. Age Ageing 2022. [DOI: 10.1093/ageing/afac218.010] [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: 11/13/2022] Open
Abstract
Abstract
Background
Although the impact of new technology on the workplace has been discussed for many years, little has been reported regarding the effect of new technology in nursing homes. The aim of the research was to test the effect of a safety monitoring device on night-time work patterns.
Methods
A monitoring sensor with an infrared camera was installed in Tokyo-based residential nursing homes in April 2020. A pre/post intervention and observation study was conducted before and after the introduction of the device. Four care professionals worked each night in pairs (one person providing care, and the other observing and keeping minute-by-minute records of task and time allocated to each task. The tasks were divided into 33 items). The data were collected by two pairs at three different nights for pre-intervention and from two pairs at two nights for post-intervention. Ten care professionals participated in the study, and they were looking after 30 older adults (86.8 +/- 6.8 years old).
Results
The total time for executing various tasks marginally increased from 978 mins to 1033 mins. However, statistically significant changes were found mainly among items related to medical care and safety. While nurse call response time decreased significantly, the proportion of time allocated to personal care such as vital checks (from 1 to 2 percent) and mobility (from 4 to 9 percent) assistance doubled. Break time also increased significantly.
Conclusion
While the introduction of a safety monitoring system did not radically reduce the workload, it changed the patterns of caregiving during the night shift. Some behavioural changes were directly caused by functions of the system, while others were by-products. Staff’s break length also increased. The findings suggest that the introduction of Information and Communication Technology (ICT) in nursing homes has the potential to release time to care.
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Affiliation(s)
- K Obayashi
- Nihon Fukushi University , Mihama, Japan
- Social Welfare Corporation Tokyo Seishin-kai , Nishitokyo, Japan
- Universal Accessibility & Ageing Research Centre , Nishitokyo, Japan
| | - N Kodate
- School of Social Policy, Social Work and Social Justice , Dublin, Ireland
- Hokkaido University Public Policy Research Center, , Sapporo, Japan
- L’École des hautes études en sciences sociales, Fondation France Japon , Paris, France
- Institute for Future Initiatives , Tokyo, Japan
- Universal Accessibility & Ageing Research Centre , Nishitokyo, Japan
- UCD Centre for Japanese Studies , Dublin, Ireland
| | - H Kondo
- Social Welfare Corporation Tokyo Seishin-kai , Nishitokyo, Japan
| | - Y Okamoto
- Social Welfare Corporation Tokyo Seishin-kai , Nishitokyo, Japan
| | - H Kaneko
- Social Welfare Corporation Tokyo Seishin-kai , Nishitokyo, Japan
| | - Y Ishii
- Universal Accessibility & Ageing Research Centre , Nishitokyo, Japan
| | - T Nonoda
- Universal Accessibility & Ageing Research Centre , Nishitokyo, Japan
| | - S Masuyama
- Tokyo Medical University , Tokyo, Japan
- Universal Accessibility & Ageing Research Centre , Nishitokyo, Japan
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Okayama K, Ishii Y, Fujii M, Oda M, Okodo M. Causation of cornflake artifacts: Possible association of poor dehydration with drying before mounting in Papanicolaou stain. Diagn Cytopathol 2022; 50:E301-E305. [PMID: 35712848 DOI: 10.1002/dc.25002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 05/31/2022] [Accepted: 06/02/2022] [Indexed: 11/11/2022]
Abstract
Cornflake artifacts are artifacts that commonly occur while the mounted medium starts to evaporate before coverslipping. This study aimed to determine factors contributing to the occurrence of these artifacts in Papanicolaou (Pap) smears. Residual specimens were used after cytology to microscopically evaluate various effects on cornflake artifacts. Four SurePath™ liquid cytology (LBC) cell specimens, diagnosed as negative for intraepithelial lesions or malignancy (NILM), were used. Each LBC smear was subjected to Pap staining under four different conditions (A, without air-drying; B, air-drying after dehydration; C, air-drying after xylene immersion; and D, air-drying after dehydration and xylene immersion) using two methods: conventional and poor dehydration. Cornflake artifacts were not observed in A and B in Pap staining. By contrast, cornflake artifacts were observed in conventional and poor dehydration methods when dried after xylene immersion. When comparing the four conditions, smears B and D, which were both air-dried after dehydration, had fewer cornflake artifacts than smear C, which was air-dried only after xylene. Therefore, the remaining water in the cells due to poor dehydration during xylene immersion is found to result in the development of cornflake artifacts. The present study revealed that cornflake artifacts in Pap smears are caused by poor dehydration in addition to drying before mounting.
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Affiliation(s)
- Kaori Okayama
- Department of Medical Technology, Faculty of Health Sciences, Gunma Paz University, Takasaki-shi, Japan
| | | | - Masahiko Fujii
- Genki Plaza Medical Center for Health Care, Tokyo, Japan
| | - Mizue Oda
- Genki Plaza Medical Center for Health Care, Tokyo, Japan
| | - Mitsuaki Okodo
- Department of Medical Technology, Faculty of Health Sciences, Kyorin University, Tokyo, Japan
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Okodo M, Okayama K, Tsukakoshi N, Misawa Y, Tanabe K, Teruya K, Ito C, Ishii Y, Fujii M, Oda M. Effects of Menstrual Cycle on Various Morphologies of High-Grade Squamous Intraepithelial Lesions in SurePath™ Liquid-Based Cervical Cytology. Acta Cytol 2022; 66:507-512. [PMID: 35700714 DOI: 10.1159/000525141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 05/01/2022] [Indexed: 11/19/2022]
Abstract
INTRODUCTION The morphology of high-grade squamous intraepithelial lesion (HSIL) on Papanicolaou (Pap) smears widely varied, including syncytial aggregates, sheets, and scattered single cells, and no particular cellular pattern is consistently observed. Therefore, this study aimed to determine whether the menstrual cycle affects the cellular pattern of HSILs, an effort to avoid false negatives due to the oversight of scattered small single HSIL cells in the cytological triage of human papillomavirus-positive women. METHODS A total of 147 HSIL samples of liquid-based cytology (LBC) in patients with cervical intraepithelial neoplasia grade 2 or 3 were obtained, and then, the relationship between cellular patterns, such as single-cell-like and syncytial aggregates, and menstrual cycles classified into six phases was analyzed. If a syncytial aggregate was present, the number of cells constituting the aggregate was visually counted under the microscope. RESULTS HSILs in scattered single cells and small sheets of <6 on LBC samples accounted for 43% (23/54) during the late proliferative phase of the menstrual cycle. A moderately strong statistically significant association was observed between cellular patterns and menstrual cycles (χ2 [3] = 9.423, p < 0.05) (Cramer's V = 0.253). The value of adjusted residuals showed a statistically significant increased proportion of single-cell-like patterns during the late proliferative phase (p < 0.01). CONCLUSIONS The present study demonstrated that HSIL cells in Pap smears in the late proliferation phase have a high frequency of single-cell-like patterns. In human papillomavirus-positive Pap smears with a clean background and predominantly superficial cells, careful microscopic observation by targeting single HSIL cells can potentially reduce false negatives.
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Affiliation(s)
- Mitsuaki Okodo
- Department of Medical Technology, Faculty of Health Sciences, Kyorin University, Mitaka-shi, Japan
| | - Kaori Okayama
- Department of Medical Technology, Faculty of Health Sciences, Gunma Paz University, Takasaki-shi, Japan
| | - Natsuko Tsukakoshi
- Department of Medical Technology, Faculty of Health Sciences, Kyorin University, Mitaka-shi, Japan
| | - Yukimi Misawa
- Department of Medical Technology, Faculty of Health Sciences, Kyorin University, Mitaka-shi, Japan
| | - Kazumasa Tanabe
- Department of Medical Technology, Faculty of Health Sciences, Kyorin University, Mitaka-shi, Japan
| | - Koji Teruya
- Department of Health and Welfare, Faculty of Health Sciences, Kyorin University, Mitaka-shi, Japan
| | - Chieko Ito
- Department of Clinical Laboratory, Genki Plaza Medical Center for Health Care, Tokyo, Japan
| | - Yasuyoshi Ishii
- Department of Clinical Laboratory, Genki Plaza Medical Center for Health Care, Tokyo, Japan
| | - Masahiko Fujii
- Department of Medical Technology, Faculty of Health Sciences, Kyorin University, Mitaka-shi, Japan
| | - Mizue Oda
- Department of Gynecology, Genki Plaza Medical Center for Health Care, Tokyo, Japan
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Okodo M, Okayama K, Misawa Y, Tsukakoshi N, Tanabe K, Teruya K, Ito C, Ishii Y, Fujii M, Oda M. Effects of menstrual cycle on cytological false-negatives in women with persistent cervical intraepithelial neoplasia. Cytopathology 2022; 33:591-599. [PMID: 35634880 DOI: 10.1111/cyt.13152] [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: 11/27/2022]
Abstract
OBJECTIVES False-negatives on cytology may be observed during follow-up of patients with persistent cervical intraepithelial neoplasia (CIN); however, the underlying reasons are unknown, and the intra-individual variability of false-negatives and menstrual cycle has not been elucidated. Therefore, this study aimed to determine whether the menstrual cycle influences cytological results to maximize the accuracy. METHODS A total of 154 liquid-based cytological (LBC) samples during the follow-up of 26 patients with CIN were obtained, and then, the relationship between cytological results and menstrual cycles classified into six phases was analyzed. RESULTS All LBC smears were satisfactory, and 20 of 154 (13.0%) specimens were negative for intraepithelial lesions or malignancy (NILM). A statistically significant association was observed between the cytological results and menstrual cycles, χ2(2) = 19.322, p < 0.01. The association was moderately strong (Cramer's V = 0.354). The value of adjusted residuals showed a statistically significant increase in the NILM percentage as a cytological result at the early secretory phase (p < 0.01) and a statistically significant decrease in NILM at the menstrual and proliferative phases (p < 0.01). CONCLUSIONS The present study revealed that false-negative cytological results were found to more likely occur at the early secretory phase. More careful and precise microscopic observation of Pap smears collected at the early secretory phase may contribute to reducing the occurrence of false-negatives and improving the cytological sensitivity.
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Affiliation(s)
- Mitsuaki Okodo
- Department of Medical Technology, Faculty of Health Sciences, Kyorin University, Tokyo
| | - Kaori Okayama
- School of Medical Technology, Faculty of Health Science, Gunma Paz University, 1-7-1 Tonyamachi, Takasaki-shi, Gunma
| | - Yukimi Misawa
- Department of Medical Technology, Faculty of Health Sciences, Kyorin University, Tokyo
| | - Natsuko Tsukakoshi
- Department of Medical Technology, Faculty of Health Sciences, Kyorin University, Tokyo
| | - Kazumasa Tanabe
- Department of Medical Technology, Faculty of Health Sciences, Kyorin University, Tokyo
| | - Koji Teruya
- Department of Health and welfare, Faculty of Health Sciences, Kyorin University, Tokyo
| | - Chieko Ito
- Department of Clinical Laboratory, Genki Plaza Medical Center for Health Care, 1-7-1 Jinbocho, Chiyoda-ku, 101-0051, Tokyo
| | - Yasuyoshi Ishii
- Department of Clinical Laboratory, Genki Plaza Medical Center for Health Care, 1-7-1 Jinbocho, Chiyoda-ku, 101-0051, Tokyo
| | - Masahiko Fujii
- Department of Medical Technology, Faculty of Health Sciences, Kyorin University, Tokyo
| | - Mizue Oda
- Department of Gynecology, Genki Plaza Medical Center for Health Care, 1-105 Jinbocho, Chiyoda-ku, 101-0051, Tokyo
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10
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Takeda T, Omura K, Mori E, Mori R, Ishii Y, Otori N. Endoscopic modified transseptal bi-nostril approach for pituitary tumors. Efficacy of complex preservation of every turbinate and olfaction: A STROBE analysis. Eur Ann Otorhinolaryngol Head Neck Dis 2022; 139:337-342. [PMID: 35597759 DOI: 10.1016/j.anorl.2022.02.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 01/31/2022] [Accepted: 02/01/2022] [Indexed: 12/17/2022]
Abstract
AIMS Endoscopic modified transseptal bi-nostril approach minimizes turbinate and olfactory mucosal invasion and ensures preservation of the turbinates and bilateral olfaction. The main objective of this study was to investigate the pre- and postoperative variations in olfactory function in patients using this approach, and the secondary objective was to investigate the complications associated with the surgical procedure. MATERIAL AND METHODS This study is a single-center prospective cohort study using STROBE analysis. To completely protect the bilateral turbinates and olfactory epithelium, this procedure provided access to the sphenoid sinus by a transseptal approach via the left nasal cavity and by the olfactory cleft approach via the right nasal cavity without any turbinate resection. A T&T olfactometer was used to assess the mean recognition threshold of the left, right, and bilateral nasal passages before and after surgery, and complications associated with the surgical approach were investigated. OBJECTIVES We included 27 patients who underwent endoscopic modified transseptal pituitary surgery with an olfactory and turbinate preservation approach at our hospital between April 2018 and December 2019. RESULTS The mean postoperative recognition threshold of the right, left, and bilateral nasal cavities did not worsen (P<0.001 for all) relative to the preoperative values, and there was no difference in values between the right and left nasal cavities (P=0.85). The nasal turbinates were preserved in all patients during the study period, and no recurrence was observed. CONCLUSION Our modified EETSA could be implemented as an approach for turbinate and olfaction preservation.
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Affiliation(s)
- T Takeda
- Department of Otorhinolaryngology, The Jikei University School of Medicine, 3-19-18 Nishi-shinbashi, Minato-ku, Tokyo, 105-8471, Japan
| | - K Omura
- Department of Otorhinolaryngology, The Jikei University School of Medicine, 3-19-18 Nishi-shinbashi, Minato-ku, Tokyo, 105-8471, Japan.
| | - E Mori
- Department of Otorhinolaryngology, The Jikei University School of Medicine, 3-19-18 Nishi-shinbashi, Minato-ku, Tokyo, 105-8471, Japan
| | - R Mori
- Department of Neurosurgery, The Jikei University School of Medicine, Tokyo, Japan
| | - Y Ishii
- Department of Neurosurgery, The Jikei University School of Medicine, Tokyo, Japan
| | - N Otori
- Department of Otorhinolaryngology, The Jikei University School of Medicine, 3-19-18 Nishi-shinbashi, Minato-ku, Tokyo, 105-8471, Japan
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11
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Ishii Y, Aiba N, Ando M, Asakura N, Bierwage A, Cara P, Dzitko H, Edao Y, Gex D, Hasegawa K, Hayashi T, Hiwatari R, Hoshino T, Ikeda Y, Ishida S, Isobe K, Iwai Y, Jokinen A, Kasugai A, Kawamura Y, Kim JH, Kondo K, Kwon S, Lorenzo SC, Masuda K, Matsuyama A, Miyato N, Morishita K, Nakajima M, Nakajima N, Nakamichi M, Nozawa T, Ochiai K, Ohta M, Oyaidzu M, Ozeki T, Sakamoto K, Sakamoto Y, Sato S, Seto H, Shiroto T, Someya Y, Sugimoto M, Tanigawa H, Tokunaga S, Utoh H, Wang W, Watanabe Y, Yagi M. R&D Activities for Fusion DEMO in the QST Rokkasho Fusion Institute. Fusion Science and Technology 2021. [DOI: 10.1080/15361055.2021.1925030] [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] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Y. Ishii
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - N. Aiba
- National Institutes for Quantum and Radiological Science and Technology, Naka Fusion Institute, Naka City, Japan
| | - M. Ando
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - N. Asakura
- National Institutes for Quantum and Radiological Science and Technology, Naka Fusion Institute, Naka City, Japan
| | - A. Bierwage
- National Institutes for Quantum and Radiological Science and Technology, Naka Fusion Institute, Naka City, Japan
| | - P. Cara
- IFMIF/EVEDA Project Team, Rokkasho-Vill., Japan
| | - H. Dzitko
- Fusion for Energy, Broader Approach, Garching, Germany
| | | | - D. Gex
- Fusion for Energy, Broader Approach, Garching, Germany
| | - K. Hasegawa
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - T. Hayashi
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - R. Hiwatari
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - T. Hoshino
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - Y. Ikeda
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - S. Ishida
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - K. Isobe
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - Y. Iwai
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - A. Jokinen
- IFMIF/EVEDA Project Team, Rokkasho-Vill., Japan
| | - A. Kasugai
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - Y. Kawamura
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - J. H. Kim
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - K. Kondo
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - S. Kwon
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - S. C. Lorenzo
- Fusion for Energy, Broader Approach, Barcelona, Spain
| | - K. Masuda
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - A. Matsuyama
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - N. Miyato
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - K. Morishita
- Kyoto University, Institute of Advanced Energy, Uji, Japan
| | - M. Nakajima
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - N. Nakajima
- National Institute for Fusion Science, Department of Helical Plasma Research Rokkasho Research Center, Rokkasho-Vill., Japan
| | - M. Nakamichi
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - T. Nozawa
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - K. Ochiai
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - M. Ohta
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - M. Oyaidzu
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - T. Ozeki
- NAT Corporation, Tohoku Branch Office, Rokkasho-Vill., Japan
| | - K. Sakamoto
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - Y. Sakamoto
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - S. Sato
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - H. Seto
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - T. Shiroto
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - Y. Someya
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - M. Sugimoto
- NAT Corporation, Tohoku Branch Office, Rokkasho-Vill., Japan
| | - H. Tanigawa
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - S. Tokunaga
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - H. Utoh
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - W. Wang
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - Y. Watanabe
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
| | - M. Yagi
- National Institutes for Quantum and Radiological Science and Technology, Rokkasho Fusion Institute, Rokkasho-Vill., Japan
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12
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Sano R, Ishii Y, Yamanaka M, Yasui Y, Kemmochi Y, Kuroki F, Sugimoto M, Fukuda S, Sasase T, Miyajima K, Nakae D, Ohta T. Glomerular hyperfiltration with hyperglycemia in the spontaneously diabetic Torii (SDT) fatty rat, an obese type 2 diabetic model. Physiol Res 2021; 70:45-54. [PMID: 33453716 DOI: 10.33549/physiolres.934533] [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: 01/19/2023] Open
Abstract
Glomerular hyperfiltration is observed in an early stage of kidney diseases including diabetic nephropathy. A better understanding of pathophysiological changes in glomerular hyperfiltration is essential for development of new therapies to prevent kidney disease progression. In this study, we investigated glomerular changes including glomerular filtration rate (GFR) and glomerular size in the Spontaneously Diabetic Torii (SDT) fatty rat, an obese type 2 diabetic model, and we also evaluated pharmacological effects of the sodium glucose cotransporter 2 inhibitor dapagliflozin on the renal lesions. Dapagliflozin was administered to SDT fatty rats from 5 to 17 weeks of age. Blood and urinary biochemical parameters were periodically measured. GFR was determined by transdermal GFR monitor at 16 weeks of age and histopathological analysis was performed at 17 weeks of age. SDT fatty rat developed severe hyperglycemia and exhibited pathophysiological abnormalities in the kidney, such as an increased GFR, glomerular hypertrophy and tissue lesions. Dapagliflozin achieved good glycemic control during the experimental period, inhibited the increase in GFR, and improved histopathological abnormalities in tubules. These results suggest that the SDT fatty rat is a useful model for analyzing the pathogenesis of diabetic nephropathy during its early stage and dapagliflozin improves not only hyperglycemia but also glomerular hyperfiltration and tubule lesions in SDT fatty rat.
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Affiliation(s)
- R Sano
- Biological/Pharmacological Research Laboratories, Central Pharmaceutical Research Institute, Japan Tobacco Inc., Osaka, Japan.
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13
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Yoshimatsu K, Hasegawa N, Nambu Y, Ishii Y, Wakabayashi Y, Kumigashira H. Metallic ground states of undoped Ti 2O 3 films induced by elongated c-axis lattice constant. Sci Rep 2020; 10:22109. [PMID: 33335175 PMCID: PMC7747712 DOI: 10.1038/s41598-020-79182-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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: 09/15/2020] [Accepted: 12/04/2020] [Indexed: 11/09/2022] Open
Abstract
Ti2O3 exhibits unique metal–insulator transition (MIT) at ~ 450 K over a wide temperature range of ~ 150 K. The close relationship between MIT and crystal deformation has been proposed. However, as physical properties are governed by the thermodynamic equilibrium in bulk systems, conducting experimental studies under different lattice deformations remains challenging. Epitaxial thin films can offer high flexibility to accommodate adaptive crystal lattices and provide efficient platforms for investigating the MIT. In this study, we report the synthesis of corundum-type Ti2O3 films on various growth temperatures. We found that the metallic ground states appeared in the films grown at low temperatures. The electronic ground states were further investigated by the electronic-structure calculations. Results suggest that the electrical properties of Ti2O3 films were governed by the c/a ratio of the crystal structure, and the absence of the MIT was attributed to the lattice deformation characterized by an elongated c lattice constant.
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Affiliation(s)
- K Yoshimatsu
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Miyagi, 980-8577, Japan. .,Materials Research Center for Element Strategy (MCES), Tokyo Institute of Technology, Yokohama, 226-8503, Japan.
| | - N Hasegawa
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Miyagi, 980-8577, Japan
| | - Y Nambu
- Institute for Materials Research, Tohoku University, Sendai, Miyagi, 980-8577, Japan
| | - Y Ishii
- Department of Physics, Tohoku University, Sendai, Miyagi, 980-8578, Japan
| | - Y Wakabayashi
- Materials Research Center for Element Strategy (MCES), Tokyo Institute of Technology, Yokohama, 226-8503, Japan.,Department of Physics, Tohoku University, Sendai, Miyagi, 980-8578, Japan
| | - H Kumigashira
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Miyagi, 980-8577, Japan.,Materials Research Center for Element Strategy (MCES), Tokyo Institute of Technology, Yokohama, 226-8503, Japan.,Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, 305-0801, Japan
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14
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Okodo M, Okayama K, Teruya K, Kimura H, Noji N, Ishii Y, Fujii M, Oda M, Sasagawa T. Koilocytic changes are not elicited by human papillomavirus genotypes with higher oncogenic potential. J Med Virol 2020; 92:3766-3773. [PMID: 32190903 DOI: 10.1002/jmv.25775] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Accepted: 03/17/2020] [Indexed: 12/23/2022]
Abstract
Koilocytes are considered a common cytopathological effect in patients with human papillomavirus (HPV) infection. Thus, we aimed to elucidate whether koilocytes are common to all HPV infections. Liquid-based cytology samples from 651 patients with abnormal Papanicolaou (Pap) test results were used to analyze the presence of koilocytes and HPV genotype. HPV genotype was determined in complete liquid cytology samples and microdissected cell samples from Pap smear slides using the uniplex E6/E7 polymerase chain reaction method, which can detect 39 mucosal HPV genotypes. Koilocytes were found in 29.3% (191) of all patients. Logistical regression analysis of diverse HPV genotypes revealed that infections with low-risk HPV types (HPV-6b, HPV-40, HPV-42, HPV-61, HPV-74, HPV-89, and HPV-90), probably high-risk HPV types (HPV-53 and HPV-66), and high-risk types (HPV-39 and HPV-56) were significantly associated with the presence of koilocytes. However, HPV-16, HPV-18, and HPV-52, which have higher oncogenic potential, were not found to be associated with koilocytes. These results were confirmed by HPV genotyping using microdissected koilocytes in 27 patients.Most common high-risk types belonging to α-9 and α-7 genotypes appear to rarely induce koilocytic changes. Therefore, koilocytes may provide additional useful information for predicting the risk of progression to high-grade lesions.
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Affiliation(s)
- Mitsuaki Okodo
- Department of Medical Technology, Faculty of Health Sciences, Kyorin University, Tokyo, Japan
| | - Kaori Okayama
- Department of Medical Technology, Faculty of Health Sciences, Gunma Paz University, Gunma, Japan
| | - Koji Teruya
- Department of Health and Welfare, Faculty of Health Sciences, Kyorin University, Tokyo, Japan
| | - Hirokazu Kimura
- Department of Medical Technology, Faculty of Health Sciences, Gunma Paz University, Gunma, Japan
| | - Natsumi Noji
- Department of Medical Technology, Faculty of Health Sciences, Kyorin University, Tokyo, Japan
| | - Yasuyoshi Ishii
- Department of Clinical Laboratory, Genki Plaza Medical Center for Health Care, Tokyo, Japan
| | - Masahiko Fujii
- Department of Medical Technology, Faculty of Health Sciences, Kyorin University, Tokyo, Japan
| | - Mizue Oda
- Department of Gynecology, Genki Plaza Medical Center for Health Care, Tokyo, Japan
| | - Toshiyuki Sasagawa
- Department of Obstetrics and Gynecology, Kanazawa Medical University, Ishikawa, Japan
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15
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Ishii Y, Kurisu F, Kasuga I, Furumai H. Competition for growth substrates in river water between Escherichia coli and indigenous bacteria illustrated by high-resolution mass spectrometry. Lett Appl Microbiol 2020; 72:133-140. [PMID: 32671859 DOI: 10.1111/lam.13343] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 06/22/2020] [Accepted: 06/23/2020] [Indexed: 11/30/2022]
Abstract
Escherichia coli normally cannot grow in the environment. One environmental stress that prevents E. coli growth may be the competition for growth substrates with co-existing micro-organisms. In this study, the growth substrates of E. coli were screened by high-resolution mass spectrometry and compared with those of indigenous bacteria in river water. In an incubation experiment, E. coli multiplied in sterilized river water, but did not multiply when indigenous micro-organisms were present in the water. By analysing dissolved organic matter in the river water before and after E. coli growth, 35 compounds were identified as putative growth substrates of E. coli. Among them, 33 compounds were also identified as putative growth substrates of indigenous bacteria. These results indicate that E. coli and indigenous bacteria compete for organic substrates in river water, which could suppress the growth of E. coli.
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Affiliation(s)
- Y Ishii
- Department of Urban Engineering, School of Engineering, The University of Tokyo, Tokyo, Japan
| | - F Kurisu
- Research Center for Water Environment Technology, School of Engineering, The University of Tokyo, Tokyo, Japan
| | - I Kasuga
- Department of Urban Engineering, School of Engineering, The University of Tokyo, Tokyo, Japan.,Master Program of Environmental Engineering, Vietnam Japan University, Nam Tu Liem, Ha Noi, Vietnam
| | - H Furumai
- Research Center for Water Environment Technology, School of Engineering, The University of Tokyo, Tokyo, Japan
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16
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Otsuka M, Satomi N, Kahata M, Kitagawa S, Kumagai A, Inoue K, Koganei H, Enta K, Ishii Y. Diagnostic reliability of quantitative flow ratio for detection of myocardial ischemia compared with other angiographic and experience-dependent visual predicted indices. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1393] [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
Background
Quantitative flow ratio (QFR) is an image-based virtual fractional flow reserve (FFR) computed by three dimensional quantitative coronary angiography (3D-QCA) and estimated flow velocity. Several studies have reported that QFR had a good diagnostic performance as compared with wire-based FFR or instantaneous wave-free ratio (iFR).
Purpose
We compared the diagnostic reliability of QFR for detection of myocardial ischemia with other angiographic and visual predicted indices.
Methods
In 301 coronary lesions (263 patients) from our QFR database for previously-reported two studies, the diagnostic reliability of QFR, several angiographic and visual predicted indices were investigated using ROC analysis as reference of FFR≤0.8 or iFR≤0.89. Visual predicted FFR were estimated by 3 physicians (25-year experienced expert, 10-year experienced senior physician and 3-year experienced trainee) blinded to other indices.
Results
Area under the curve (AUC) of each index in ROC analysis is shown in Table.
Conclusion
QFR was reliable index detecting myocardial ischemia compared with other angiographic and experience-dependent visual predicted indices.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
| | | | | | | | | | - K Inoue
- Ogikubo Hospital, Tokyo, Japan
| | | | - K Enta
- Ogikubo Hospital, Tokyo, Japan
| | - Y Ishii
- Ogikubo Hospital, Tokyo, Japan
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17
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Fukushima Y, Ishii Y, Kiriyama T, Nitta T, Kumita S. Prognostic value of hybrid cardiac perfusion SPECT/CT for patients with coronary artery disease after coronary artery bypass grafting. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1504] [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
Patients with coronary artery disease (CAD) undergoing coronary artery bypass grafting (CABG) occasionally experience recurrent myocardial ischemia. Because of their severe CAD and its complicated hemodynamics, conventional cardiac perfusion SPECT often cannot reveal the severity and prognosis solely. Hybrid cardiac SPECT/CT imaging simultaneously shows myocardial ischemia distribution, coronary artery lesion distribution, and their relationship, and this modality may enable detailed interpretation and risk stratification for such patients.
Aim
This study aimed to assess the prognostic value of hybrid cardiac SPECT/CT for patients with CAD and suspected myocardial ischemia after CABG.
Methods
A total of 201 consecutive patients, registered between April 2016 and September 2018, with suspected recurrent angina pectoris after CABG requiring examinations for myocardial ischemia were included in this study. Among these, 135 patients who underwent cardiac perfusion SPECT, cardiac CT, and hybrid cardiac SPECT/CT imaging were analyzed. In the SPECT-only analysis, SDS was calculated, and the patients were divided into none-to-mild (SDS <4) and moderate-to-severe ischemia (SDS ≥4) groups. In the SPECT/CT analysis, the patients were divided into a matched group (SPECT reversible accumulation defects [SDS ≥2] along coronary arteries with significant lesions) and an unmatched group (accumulation defects not coincided with coronary artery territories or no significant stenoses in the corresponding coronary arteries). All patients were observed from the time of these tests for the occurrence of major adverse cardiac events (MACE), and the prognostic performances of these analyses were compared.
Results
In the SPECT-only analysis, 62 were in the none-to-mild group and 73 were in the moderate-to-severe group. In the SPECT/CT analysis, 61 were in the matched group and 74 were in the unmatched group. Within the follow-up period of 29±8 months, 15 patients experienced MACE. The patients' prognoses were clearly stratified by hybrid SPECT/CT analysis (matched: 13/61, 21.3% vs. unmatched: 2/74, 2.7%) compared with SPECT-only analysis (moderate-to-severe: 11/73, 15.0% vs. none-to-mild: 4/62, 6.5%). The hybrid cardiac SPECT/CT analysis was more strongly associated with the occurrence of MACE compared with SPECT-only analysis (p=0.008 vs. p=0.04, respectively).
Conclusions
Hybrid cardiac SPECT/CT imaging can have higher prognostic value compared with stand-alone cardiac perfusion SPECT for patients with CAD after CABG.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
| | - Y Ishii
- Nippon Medical School, Tokyo, Japan
| | | | - T Nitta
- Nippon Medical School, Tokyo, Japan
| | - S Kumita
- Nippon Medical School, Tokyo, Japan
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18
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Kasai T, Fukui Y, Aoki K, Ishii Y, Tateda K. Changes in the ear canal microbiota of dogs with otitis externa. J Appl Microbiol 2020; 130:1084-1091. [PMID: 32979301 DOI: 10.1111/jam.14868] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 09/10/2020] [Accepted: 09/16/2020] [Indexed: 01/03/2023]
Abstract
AIMS Otitis externa (OE), one of the most common ear diseases in dogs, is caused by bacterial pathogens such as Staphylococcus sp. To understand the network of microbial communities in the canine ear canal affected with OE, we performed a cross-sectional study using next-generation sequencing. METHODS AND RESULTS Ear swab samples were collected from 23 OE-affected and 10 healthy control dogs, and the 16S rRNA gene sequenced using Illumina MiSeq. The otic microbiota in the OE-affected dogs showed significantly decreased alpha diversity compared to controls. The community composition also differed in the affected group, with significantly higher relative abundance of the phylum Firmicutes and the genus Staphylococcus (P = 0·01 and 0·04 respectively). Contrary to our expectations, the severity of the disease did not impact the otic microbiota in OE-affected dogs. CONCLUSIONS The ear canal microbiota of OE-affected dogs is distinct from that of healthy dogs, irrespective of disease status. SIGNIFICANCE AND IMPACT OF THE STUDY This study, one of the few detailed analyses of the otic microbiota, can provide practical information for the appropriate treatment of canine OE.
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Affiliation(s)
- T Kasai
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, Tokyo, Japan.,Kitagawa Veterinary Hospital, Tokyo, Japan
| | - Y Fukui
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, Tokyo, Japan
| | - K Aoki
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, Tokyo, Japan
| | - Y Ishii
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, Tokyo, Japan
| | - K Tateda
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, Tokyo, Japan
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19
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Tokunaga S, Moreau P, Signoret J, Imbeaux F, Tsitrone E, Loarer T, Salmon T, Hutter T, Giruzzi G, Joffrin E, De Tommasi G, Sartori F, Farthing J, Nakanishi H, Ozeki T, Asakura N, Sakamoto Y, Ohtsu H, Sugie Y, Suzuki S, Fukuda M, Nakano T, Sano R, Ishii Y, Clement-Lorenzo S, Nakajima N. Remote experiment with WEST from ITER Remote Experimentation Centre. Fusion Engineering and Design 2020. [DOI: 10.1016/j.fusengdes.2020.111554] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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20
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Ishii Y, Ohkubo T, Kashiwagi H, Miyake Y. Preliminary study: Measurement of ion beam energy spreads produced by a Penning ionization gauge-type ion source using electromagnets for a mega-electron volt compact ion microbeam system. Rev Sci Instrum 2020; 91:043304. [PMID: 32357747 DOI: 10.1063/1.5132301] [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] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 03/05/2020] [Indexed: 06/11/2023]
Abstract
The energy spreads of ion beams generated from a penning ionization gauge-type ion source with electromagnets were measured using a parallel electrostatic analyzer. The ion source was developed to be installed in a mega-electron volt (MeV) compact ion microbeam system. A gaseous ion beam of expectedly high brightness and narrow energy spread was generated from the ion source to form a microbeam. To produce such an ion beam, a high-density plasma with a small volume was generated using a strong magnetic field in the ion source. The beam energy spread width was of particular importance because it forms an ion microbeam by reducing the chromatic aberration at a focusing lens. In this report, the energy spread was investigated by changing the parameters of the ion source, e.g., extraction voltage, excitation current of electromagnets, vacuum, and anode voltage. The investigation showed that spread widths are influenced by the extraction voltage, vacuum, and anode voltage. The minimum width of ∼5.0 ± 0.1 eV was obtained at a beam energy of 200 eV. This value is acceptable for the MeV compact ion microbeam system.
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Affiliation(s)
- Y Ishii
- National Institutes for Quantum and Radiological Science and Technology (QST), 1233 Watanuki-machi, Takasaki, Gunma 370-1292, Japan
| | - T Ohkubo
- National Institutes for Quantum and Radiological Science and Technology (QST), 1233 Watanuki-machi, Takasaki, Gunma 370-1292, Japan
| | - H Kashiwagi
- National Institutes for Quantum and Radiological Science and Technology (QST), 1233 Watanuki-machi, Takasaki, Gunma 370-1292, Japan
| | - Y Miyake
- Beam Seiko Instruments Inc., Izumi-Biru 1F 1-20-3, Kamata, Ohta-ku, Tokyo 144-0052, Japan
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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.
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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
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Abe I, Terabayashi T, Teshima Y, Ishii Y, Miyoshi M, Kira S, Kondo H, Saito S, Yufu K, Takahashi N, Ishizaki T. 1181Role of rho-mdia1 signaling to maintain cardiac function in response to pressure overload in mice. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0023] [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
Background
Cardiac hypertrophy is a compensatory response to pressure overload that leads to heart failure. Recent studies have shown that Rho signaling has crucial regulatory roles in actin cytoskeleton rearrangement during cardiac hypertrophic responses. Rho is rapidly activated in response to pressure overload, but the mechanisms by which Rho and its downstream proteins control actin dynamics during hypertrophic responses remain unclear.
Objective
To identify the essential roles of mDia1 (Rho-effector molecule) in pressure overload-induced ventricular hypertrophy.
Methods and results
Male wild-type (WT) and mDia1-knockout (mDia1KO) mice (10–12 weeks old) were subjected to transverse aortic constriction (TAC) or a sham operation. The heart weight/tibia length ratio, cardiomyocyte cross-sectional area, left ventricular wall thickness, and expression of hypertrophy-specific genes were significantly decreased in mDia1KO mice 3 weeks after TAC, and the mortality rate was higher at 12 weeks. Echocardiography and the pressure-volume loop indicated that mDia1 deletion increased the severity of heart failure 8 weeks after TAC. Microarray gene expression profiling showed that the induction of immediate early genes due to the TAC operation was significantly lower in mDia1KO mice than WT mice, as was the activation of extracellular signal-regulated kinase (ERK) and focal adhesion kinase (FAK). We examined the role of mDia1 in neonatal rat ventricular cardiomyocytes (NRVMs) exposed to mechanical stress. The siRNA-mediated silencing of mDia1 attenuated stretch-induced ERK and FAK phosphorylation, and gene expression of c-fos. Importantly, loss of mDia1 suppressed an increase in the F/G-actin ratio in response to pressure overload in the mice. In addition, increases in nuclear myocardin-related transcription factors (MRTFs) and serum response factor (SRF) were perturbed in response to pressure overload in mDia1KO mice and to mechanical stretch in mDia1 depleted NRVMs.
Conclusions
Rho-mDia1, through actin dynamics, plays critical roles in pressure overload-induced hypertrophy by regulating ERK and FAK phosphorylation and the transcriptional activity of MRTF-SRF.
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Affiliation(s)
- I Abe
- Faculty of Medicine, Oita University, Department of Cardiology and Clinical Examination, Oita, Japan
| | - T Terabayashi
- Oita University, Department of Pharmacology, Yufu, Japan
| | - Y Teshima
- Faculty of Medicine, Oita University, Department of Cardiology and Clinical Examination, Oita, Japan
| | - Y Ishii
- Faculty of Medicine, Oita University, Department of Cardiology and Clinical Examination, Oita, Japan
| | - M Miyoshi
- Faculty of Medicine, Oita University, Department of Cardiology and Clinical Examination, Oita, Japan
| | - S Kira
- Faculty of Medicine, Oita University, Department of Cardiology and Clinical Examination, Oita, Japan
| | - H Kondo
- Faculty of Medicine, Oita University, Department of Cardiology and Clinical Examination, Oita, Japan
| | - S Saito
- Faculty of Medicine, Oita University, Department of Cardiology and Clinical Examination, Oita, Japan
| | - K Yufu
- Faculty of Medicine, Oita University, Department of Cardiology and Clinical Examination, Oita, Japan
| | - N Takahashi
- Faculty of Medicine, Oita University, Department of Cardiology and Clinical Examination, Oita, Japan
| | - T Ishizaki
- Oita University, Department of Pharmacology, Yufu, Japan
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Ishii Y, Yufu K, Kira S, Miyoshi M, Abe I, Oniki T, Kondo H, Saito S, Fukui A, Okada N, Akioka H, Shinohara T, Teshima Y, Nakagawa M, Takahashi N. 4090Maximum standardized uptake value of pericardial fat for prediction of ventricular arrhythmias in patients with cardiac sarcoidosis. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0102] [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
Background
Cardiac sarcoidosis is a cause of epicarditis and sustained life-threatening ventricular arrhythmias. These arrhythmias occasionally arise from epicardial. Positron emission tomogramphy-comututed tomography (PET-CT) is useful for diagnosis with sarcoidosis. However, the usefulness for prediction of ventricular arrhythmias in patients with cardiac sarcoidosis is unknown.
Objective
We hypothesized that the evaluation of pericardial fat inflammation could identify high-risk sarcoidosis patients for ventricular arrhythmias.
Methods
We enrolled 20 consecutive patients with cardiac sarcoidosis performed PET-CT between August 2016 and December 2018. In each case, we measured the maximum standardized uptake value (SUVmax) of pericardial fat around the left atrium, both ventricules, atrioventricular groove, and left main coronary.
Results
Seven patients experienced ventricular tachycardia (VT) or ventricular fibrillation (VF). VT/VF patients had significantly more complete right bundle branch block (P=0.035), larger left atrial dimension (P=0.021), larger left ventricular end-diastolic dimension (P=0.005), lower ejection fraction (P=0.007), and higher E/e' (P=0.004). SUVmax of pericardial fat in the roof of left atrium (LA) and left ventricular (LV) with VT/VF patients were significantly higher than non-VT/VF patients (LA: 1.63 vs 1.32, P=0.0311; LV: 1.84 vs 1.26, P=0.045). The cut-off values of SUVmax derived from the ROC curve in the roof of LA and LV are 1.47 and 1.59 respectively. The Kaplan Meire estimator showed that high SUVmax patients in the roof of LA had significantly more detection of NSVT.
Conclusions
Our results suggest the relationship between SUVmax and VT/VF occurrence in patients with cardiac sarcoidosis. The evaluateon of SUVmax may be useful for VT/VF risk stratification.
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Affiliation(s)
- Y Ishii
- Oita University, Department of Cardiology and Clinical Examination, Faculty of Medicine, Yufu, Japan
| | - K Yufu
- Oita University, Department of Cardiology and Clinical Examination, Faculty of Medicine, Yufu, Japan
| | - S Kira
- Oita University, Department of Cardiology and Clinical Examination, Faculty of Medicine, Yufu, Japan
| | - M Miyoshi
- Oita University, Department of Cardiology and Clinical Examination, Faculty of Medicine, Yufu, Japan
| | - I Abe
- Oita University, Department of Cardiology and Clinical Examination, Faculty of Medicine, Yufu, Japan
| | - T Oniki
- Oita University, Department of Cardiology and Clinical Examination, Faculty of Medicine, Yufu, Japan
| | - H Kondo
- Oita University, Department of Cardiology and Clinical Examination, Faculty of Medicine, Yufu, Japan
| | - S Saito
- Oita University, Department of Cardiology and Clinical Examination, Faculty of Medicine, Yufu, Japan
| | - A Fukui
- Oita University, Department of Cardiology and Clinical Examination, Faculty of Medicine, Yufu, Japan
| | - N Okada
- Oita University, Department of Cardiology and Clinical Examination, Faculty of Medicine, Yufu, Japan
| | - H Akioka
- Oita University, Department of Cardiology and Clinical Examination, Faculty of Medicine, Yufu, Japan
| | - T Shinohara
- Oita University, Department of Cardiology and Clinical Examination, Faculty of Medicine, Yufu, Japan
| | - Y Teshima
- Oita University, Department of Cardiology and Clinical Examination, Faculty of Medicine, Yufu, Japan
| | - M Nakagawa
- Oita University, Department of Medical Education Center, Faculty of Medicine, Yufu, Japan
| | - N Takahashi
- Oita University, Department of Medical Education Center, Faculty of Medicine, Yufu, Japan
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Kira S, Abe I, Teshima Y, Ishii Y, Miyoshi M, Oniki T, Fukui A, Shinohara T, Shimada T, Yufu K, Nakagawa M, Takahashi N. P1628Angiopoietin-like protein (Angptl) 2 secreted from epicardial adipose tissue induces atrial myocardial fibrosis. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Using excised human left atrial appendage samples, we previously demonstrated that epicardial adipose tissue (EAT) are highly associated with atrial myocardial fibrosis as a substrate of atrial fibrillation (AF). We also reported the relationship between Angptl2 in EAT and atrial fibrosis. However, the mechanism is not clear. The purpose is to clarify the mechanisms underlying the effect of EAT on the atrial myocardium.
Methods
Human peri-left atrial EAT and abdominal subcutaneous adipose tissue (SAT) samples were obtained from 6 cases (2 females, 70.2±13.2 years). 50 mg of EAT and SAT were quickly washed with PBS and centrifuged 1min at 1200rpm. After 3 times this procedures, adipose tissues were cultured in DMEM F12 medium with Fetal bovine Serum (FBS) overnight.
After pre-incubation, EAT and SAT tissues were washed and centrifuge d three times and cultured in medium without FBS for 24hours. Finally, we collected oozed medium (conditioned medium) and used for experiments.
Concentrations of Angptl2 in conditioned medium were measured by ELISA.
To study the effects of conditioned medium, we used “organo-culture” system. Isolated atrium from 8week old male Sprague-Dawley rats were placed on the porous membrane with the endothelial face toward the membrane. After that, loading medium (conditioned medium:culture medium = 1:4), culture medium (control), or recombinant Angptl2 were dropped onto the epicardial face of the atrium once a day and incubated for 7 days (37°C, 5% CO2).
Then, histological and immunohistochemical analysis were performed. We also performed quantitative reverse transcription–polymerase chain reaction (RT–PCR) analysis.
Next, we isolated and cultured neonatal rat fibroblast and loaded Angptl2 for 24 hours.After collected these cells, we performed western blotting analysis.
Results
Atria organo-culture incubated for 7 days with conditioned medium showed global fibrosis. At epicardial side, fibrotic area of EAT group was significantly greater compared to that of SAT and control group (P<0.05).
mRNA of Col1a1, col3a1 and TGFβ1 were significantly increased in EAT group compared with the SAT and control group.
And, the concentration of conditioned medium created from EAT was significant higher than that from SAT (P<0.05).
Then, we dropped 500 ng/ml of recombinant Angptl2 onto the rat atria. Fibrotic area of Angptl22 group significantly greater than that of control with increasing number of α-SMA positive cells, and mRNA of col3a1 and TGFβ1 were significantly increased in Angptl2 group compared with control group.
In cultured fibroblasts, α-SMA and p-ERK expression were increased in Angptl2 group measured by western blotting analysis.
Conclusions
Our results demonstrated that EAT rather than SAT induces atrial myocardial fibrosis. There is a possibility that Angptl2 effused from EAT plays a part in atrial fibrosis thought EAT paracrine effect.
Acknowledgement/Funding
ONO PHARMACEUTICAL CO
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Affiliation(s)
- S Kira
- Oita University, Cardiology and Clinical Examination, Yufu, Japan
| | - I Abe
- Oita University, Cardiology and Clinical Examination, Yufu, Japan
| | - Y Teshima
- Oita University, Cardiology and Clinical Examination, Yufu, Japan
| | - Y Ishii
- Oita University, Cardiology and Clinical Examination, Yufu, Japan
| | - M Miyoshi
- Oita University, Cardiology and Clinical Examination, Yufu, Japan
| | - T Oniki
- Oita University, Cardiology and Clinical Examination, Yufu, Japan
| | - A Fukui
- Oita University, Cardiology and Clinical Examination, Yufu, Japan
| | - T Shinohara
- Oita University, Cardiology and Clinical Examination, Yufu, Japan
| | - T Shimada
- Oita College of Judo Therapy & Acupuncture & Moxibustion, Oita, Japan
| | - K Yufu
- Oita University, Cardiology and Clinical Examination, Yufu, Japan
| | - M Nakagawa
- Oita University, Medical Education Center, Yufu, Japan
| | - N Takahashi
- Oita University, Cardiology and Clinical Examination, Yufu, Japan
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Luke J, Siu L, Santucci-Pereira J, Nelson D, Kandoussi E, Fischer B, Wind-Rotolo M, Greenawalt D, Ishii Y. Interferon ɣ (IFN-ɣ) gene signature and tryptophan 2,3-dioxygenase 2 (TDO2) gene expression: a potential predictive composite biomarker for linrodostat mesylate (BMS-986205; indoleamine 2,3-dioxygenase 1 inhibitor [IDO1i]) + nivolumab (NIVO). Ann Oncol 2019. [DOI: 10.1093/annonc/mdz268.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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26
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Stein J, Signoretti S, Sznol M, Ishii Y, McDermott D, Choueiri T, Taube J. Pathologic scoring of pre-treatment H&E biopsies predicts overall survival in patients with metastatic clear cell renal cell carcinoma receiving nivolumab monotherapy. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz253.076] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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27
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Ishii Y, Kawakami H, Mekata T, Sugiyama A. Histopathological Features of Mycobacterium chelonae Infection in Two Farmed Japanese Pufferfish (Takifugu rubripes). J Comp Pathol 2019; 170:86-90. [PMID: 31375164 DOI: 10.1016/j.jcpa.2019.06.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 06/10/2019] [Accepted: 06/18/2019] [Indexed: 02/07/2023]
Abstract
Granulomatous lesions were observed in the swim bladder, kidney, spleen and gills of two farmed Japanese pufferfish (Takifugu rubripes) infected with Mycobacterium chelonae. Three types of lesions were noted: unencapsulated clusters of epithelioid cells without central necrosis (type 1), encapsulated granulomas without central necrosis (type 2) and encapsulated granulomas with central necrosis (type 3). Type 3 lesions occurred most frequently in the swim bladder, while type 1 and type 2 lesions occurred frequently in the kidney and spleen, and the gills exhibited mostly type 1 lesions. This suggests that the lesions in the swim bladder were more fully developed than those occurring elsewhere and that the swim bladder may be more susceptible to infection with M. chelonae. This is the first report describing the histopathological features of M. chelonae infection in Tetraodontidae.
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Affiliation(s)
- Y Ishii
- Ehime Fisheries Research Center, Ehime Research Institute of Agriculture, Forestry and Fisheries, Ehime, Japan
| | - H Kawakami
- Ehime Fisheries Research Center, Ehime Research Institute of Agriculture, Forestry and Fisheries, Ehime, Japan
| | - T Mekata
- National Research Institute of Aquaculture, Japan Fisheries Research and Education Agency, Mie, Japan
| | - A Sugiyama
- Faculty of Veterinary Medicine, Okayama University of Science, Ehime, Japan.
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Sakai R, Ohmachi K, Sano F, Watanabe R, Takahashi H, Takasaki H, Tanaka M, Hattori Y, Kimura H, Takimoto M, Tachibana T, Tanaka E, Ishii Y, Ishiyama Y, Hagihara M, Miyazaki K, Yamamoto K, Tomita N, Ando K. Bendamustine-120 plus rituximab therapy for relapsed or refractory follicular lymphoma: a multicenter phase II study. Ann Hematol 2019; 98:2131-2138. [DOI: 10.1007/s00277-019-03750-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Accepted: 06/27/2019] [Indexed: 11/30/2022]
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Hata H, Okayama K, Iijima J, Teruya K, Shiina N, Caniz T, Ishii Y, Fujii M, Oda M, Okodo M. A Comparison of Cytomorphological Features of ASC-H Cells Based on Histopathological Results Obtained from a Colposcopic Target Biopsy Immediately after Pap smear Sampling. Asian Pac J Cancer Prev 2019; 20:2139-2143. [PMID: 31350977 PMCID: PMC6745206 DOI: 10.31557/apjcp.2019.20.7.2139] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 03/11/2019] [Indexed: 11/25/2022] Open
Abstract
Background: To compare the cytomorphological features of atypical squamous cells, cannot exclude high-grade
squamous intraepithelial lesion (ASC-H) observed in a liquid-based Pap smear with the histopathological features
observed in a concurrent colposcopic biopsy specimen obtained immediately after obtaining the Pap smear. Methods:
Cytomorphological features such as cytoplasmic differentiation, nuclear/cytoplasm (N/C) ratio, chromatin pattern,
thickening of nuclear contour, and the appearance of the nucleolus of 247 ASC-H obtained from 25 liquid-based Pap
smear ASC-H cases were compared with those of the cells obtained from biopsied samples. Human papillomavirus
(HPV) infection was tested for 39 HPV genotypes using Uniplex E6/E7 polymerase chain reaction method. Results:
Of the 25 ASC-H cases, 22 (88%) showed cervical intraepithelial neoplasia grade 1 or greater (CIN1+) and 3 (12%)
were benign. HPV infection was detected in 100% CIN1+ cases and 66.7% benign cases. Significant differences such as
marked hyperchromasia, thickened nuclear contour, and prominent nucleoli were observed between ASC-H cases with
CIN1+ and the benign cases. Conclusion: The presence of small dysplastic cells displaying marked hyperchromasia,
thickening of nuclear contour, and prominent nucleoli on Pap smear strongly suggest the presence of CIN in ASC-H cases.
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Affiliation(s)
- Hiromi Hata
- Department of Medical Technology, Faculty of Health Sciences, Kyorin University, 5-4-1 Shimorenjaku, Mitaka-shi, 181-8621, Tokyo, Japan.
| | - Kaori Okayama
- School of Medical Technology, Faculty of Health Science, Gunma Paz University, 1-7-1 Tonyamachi, Takasaki-shi, 370-0006, Gunma, Japan
| | - Junko Iijima
- Department of Medical Technology, Faculty of Health Sciences, Kyorin University, 5-4-1 Shimorenjaku, Mitaka-shi, 181-8621, Tokyo, Japan.
| | - Koji Teruya
- Department of Health and welfare, Faculty of Health Sciences, Kyorin University, 5-4-1 Shimorenjaku, Mitaka-shi, 181-8621, Tokyo, Japan
| | - Natsuko Shiina
- ILABO Cyto STD Laboratory, Inc., 560-6 Shimoonkata, Hachiouji-shi, 192-0154 Tokyo, Japan
| | - Timothy Caniz
- ILABO Cyto STD Laboratory, Inc., 560-6 Shimoonkata, Hachiouji-shi, 192-0154 Tokyo, Japan
| | - Yasuyoshi Ishii
- Genki Plaza Medical Center for Health Care, 3-6-5 Iidabashi, Chiyoda-ku, 102-0072, Tokyo, Japan
| | - Masahiko Fujii
- Genki Plaza Medical Center for Health Care, 3-6-5 Iidabashi, Chiyoda-ku, 102-0072, Tokyo, Japan
| | - Mizue Oda
- Genki Plaza Medical Center for Health Care, 3-6-5 Iidabashi, Chiyoda-ku, 102-0072, Tokyo, Japan
| | - Mitsuaki Okodo
- Department of Medical Technology, Faculty of Health Sciences, Kyorin University, 5-4-1 Shimorenjaku, Mitaka-shi, 181-8621, Tokyo, Japan.
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Tanaka Y, Kimura S, Ishii Y, Tateda K. Equol inhibits growth and spore formation of Clostridioides difficile. J Appl Microbiol 2019; 127:932-940. [PMID: 31211883 DOI: 10.1111/jam.14353] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [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: 04/10/2019] [Revised: 06/01/2019] [Accepted: 06/12/2019] [Indexed: 12/15/2022]
Abstract
AIMS Equol is a nonsteroidal oestrogen of the isoflavone class. We investigated the antibacterial ability of equol with respect to the growth rate, toxin production and spore-forming abilities of Clostridioides difficile BI/027/NAP1. METHODS AND RESULTS Isoflavones, or female hormones, were added to bacterial culture, which was grown at 35°C. The absorbance of the culture was measured at various time points for evaluating the growth inhibition. The toxin levels in the media and morphological changes were also assessed. To evaluate the influence of equol on the sporulation of C. difficile, cells were collected at various time points from the equol-supplemented culture and the number of spores was counted. Our results show that equol inhibits bacterial growth in a concentration-dependent manner. However, it does not inhibit the production of toxin by C. difficile. Other isoflavones and female hormones did not inhibit the C. difficile growth. At the 14th day, approximately 600 spores were present in the control medium and only six were seen in the equol-containing medium. CONCLUSION Our results suggest that equol may directly inhibit the C. difficile growth in a concentration-dependent manner and spore formation. SIGNIFICANCE AND IMPACT OF THE STUDY This is the first report on the antimicrobial ability of equol.
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Affiliation(s)
- Y Tanaka
- Department of Microbiology and Infectious Diseases, Toho University Graduate School of Medicine, Tokyo, Japan
| | - S Kimura
- Department of Microbiology and Infectious Diseases, Toho University Graduate School of Medicine, Tokyo, Japan
| | - Y Ishii
- Department of Microbiology and Infectious Diseases, Toho University Graduate School of Medicine, Tokyo, Japan
| | - K Tateda
- Department of Microbiology and Infectious Diseases, Toho University Graduate School of Medicine, Tokyo, Japan
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Moreno V, Luke J, Gelmon K, Joshua A, Varga A, Desai J, Markman B, Gomez-Roca C, De Braud F, Patel S, Carlino M, Siu L, Curigliano G, Liu Z, Ishii Y, Wind-Rotolo M, Basciano P, Azrilevich A, Tabernero J. Combination of the indoleamine 2,3-dioxygenase 1 inhibitor (IDO1i) BMS-986205 with nivolumab (nivo): Updated safety across all tumors and efficacy in advanced bladder cancer (advBC) by patient (pt) subgroup. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/s1569-9056(19)31087-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Witjes J, Gschwend J, Palou J, Meng M, Chang S, Shore N, Konety B, Steinberg G, Nishiyama H, Taylor J, Elegbe A, Lambert A, Zhu L, Ishii Y, Maeda T, Raybold B, Grossfeld G, Fischer B, Rutstein M, Hahn N. A phase 2, randomized study of nivolumab or nivolumab plus BMS-986205 with or without intravesical bacillus Calmette-Guerin in patients with bacillus Calmette-Guerin–unresponsive, high-risk, non-muscle invasive bladder cancer: CheckMate 9UT. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/s1569-9056(19)31328-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Takasu S, Ishii Y, Kijima A, Ogawa K, Umemura T. Requirement of Nrf2 for termination of liver regeneration caused by acute proliferative response. Toxicol Lett 2018. [DOI: 10.1016/j.toxlet.2018.06.1050] [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: 10/28/2022]
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Ishii Y, Shi L, Takasu S, Kijima A, Ogawa K, Umemura T. Combined application of comprehensive DNA analysis for DNA modification and reporter gene mutation assay to investigation of the mechanisms underlying hepatocarcinogenicity of elemicin. Toxicol Lett 2018. [DOI: 10.1016/j.toxlet.2018.06.759] [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: 10/28/2022]
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Ishii Y, Kawaguchi S, Asai K, Mori S. Incommensurate phase of the stuffed tridymite derivative BaSrFe4O8. J SOLID STATE CHEM 2018. [DOI: 10.1016/j.jssc.2018.06.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Sakai S, Sato A, Hoshi T, Hiraya D, Ishii Y, Yaguchi T, Aonuma K, Nogami A. P6487Relationship between difference in morphology of protrusion detected by OCT and findings of coronary angioscopy. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- S Sakai
- University of Tsukuba, tsukuba, Japan
| | - A Sato
- University of Tsukuba, tsukuba, Japan
| | - T Hoshi
- University of Tsukuba, tsukuba, Japan
| | - D Hiraya
- University of Tsukuba, tsukuba, Japan
| | - Y Ishii
- University of Tsukuba, tsukuba, Japan
| | - T Yaguchi
- University of Tsukuba, tsukuba, Japan
| | - K Aonuma
- University of Tsukuba, tsukuba, Japan
| | - A Nogami
- University of Tsukuba, tsukuba, Japan
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Ishii Y, Komatsu K, Nakano S, Machida S, Hattori T, Sano-Furukawa A, Kagi H. Pressure-induced stacking disorder in boehmite. Phys Chem Chem Phys 2018; 20:16650-16656. [PMID: 29873355 DOI: 10.1039/c8cp02565g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The structure of an aluminum layered hydroxide, boehmite (γ-AlOOH), as a function of pressure was studied by using in situ synchrotron X-ray and neutron diffraction. Peak broadening, which is only found for hkl (h ≠ 0) peaks in the X-ray diffraction patterns, is explained by stacking disorder accompanying a continuously increasing displacement of the AlO6 octahedral layer along the a-axis. This finding could be the first experimental result for pressure-induced stacking disorder driven by continuous layer displacement. The magnitude of the layer displacement was estimated from the X-ray scattering profile calculation based on the stacking disordered structure model. Hydrogen bond geometries of boehmite, obtained by structure refinements of the observed neutron diffraction patterns for the deuterated sample up to 10 GPa, show linearly approaching O-D covalent and DO hydrogen bond distances and they merge below 26 GPa. Pressure-induced stacking disorder makes the electrostatic potential of hydrogen bonds asymmetric, yielding less chance for proton-tunnelling.
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Affiliation(s)
- Y Ishii
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
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Kunii M, Doi H, Ishii Y, Ohba C, Tanaka K, Tada M, Fukai R, Hashiguchi S, Kishida H, Ueda N, Kudo Y, Kugimoto C, Nakano T, Udaka N, Miyatake S, Miyake N, Saitsu H, Ito Y, Takahashi K, Nakamura H, Tomita‐Katsumoto A, Takeuchi H, Koyano S, Matsumoto N, Tanaka F. Genetic analysis of adult leukoencephalopathy patients using a custom‐designed gene panel. Clin Genet 2018; 94:232-238. [DOI: 10.1111/cge.13371] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 04/17/2018] [Accepted: 04/23/2018] [Indexed: 01/17/2023]
Affiliation(s)
- M. Kunii
- Department of Neurology and Stroke Medicine Yokohama City University Yokohama Japan
| | - H. Doi
- Department of Neurology and Stroke Medicine Yokohama City University Yokohama Japan
| | - Y. Ishii
- Department of Neurology and Stroke Medicine Yokohama City University Yokohama Japan
| | - C. Ohba
- Department of Neurology and Stroke Medicine Yokohama City University Yokohama Japan
| | - K. Tanaka
- Department of Neurology and Stroke Medicine Yokohama City University Yokohama Japan
| | - M. Tada
- Department of Neurology and Stroke Medicine Yokohama City University Yokohama Japan
| | - R. Fukai
- Department of Neurology and Stroke Medicine Yokohama City University Yokohama Japan
| | - S. Hashiguchi
- Department of Neurology and Stroke Medicine Yokohama City University Yokohama Japan
| | - H. Kishida
- Department of Neurology Yokohama City University Medical Center Yokohama Japan
| | - N. Ueda
- Department of Neurology Yokohama City University Medical Center Yokohama Japan
| | - Y. Kudo
- Department of Neurology Yokohama City Stroke, Nerve Backbone Center Yokohama Japan
| | - C. Kugimoto
- Department of Neurology Yokohama City Stroke, Nerve Backbone Center Yokohama Japan
| | - T. Nakano
- Department of Neurology and Stroke Medicine Yokohama Sakae Kyosai Hospital Yokohama Japan
| | - N. Udaka
- Department of Pathology Yokohama City University Yokohama Japan
| | - S. Miyatake
- Department of Human Genetics Yokohama City University Yokohama Japan
| | - N. Miyake
- Department of Human Genetics Yokohama City University Yokohama Japan
| | - H. Saitsu
- Department of Human Genetics Yokohama City University Yokohama Japan
| | - Y. Ito
- Department of Neurology Toyota Memorial Hospital Toyota Japan
| | - K. Takahashi
- Department of Neurology and Stroke Medicine Yokohama City University Yokohama Japan
| | - H. Nakamura
- Department of Neurology and Stroke Medicine Yokohama City University Yokohama Japan
| | - A. Tomita‐Katsumoto
- Department of Neurology and Stroke Medicine Yokohama City University Yokohama Japan
| | - H. Takeuchi
- Department of Neurology and Stroke Medicine Yokohama City University Yokohama Japan
| | - S. Koyano
- Department of Neurology and Stroke Medicine Yokohama City University Yokohama Japan
| | - N. Matsumoto
- Department of Human Genetics Yokohama City University Yokohama Japan
| | - F. Tanaka
- Department of Neurology and Stroke Medicine Yokohama City University Yokohama Japan
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Toriniwa Y, Muramatsu M, Ishii Y, Riya E, Miyajima K, Ohshida S, Kitatani K, Takekoshi S, Matsui T, Kume S, Yamada T, Ohta T. Pathophysiological characteristics of non-alcoholic steatohepatitis-like changes in cholesterol-loaded type 2 diabetic rats. Physiol Res 2018; 67:601-612. [PMID: 29750881 DOI: 10.33549/physiolres.933784] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Spontaneously Diabetic Torii (SDT) fatty rats, a new obese diabetic model, reportedly presented with features of non-alcoholic steatohepatitis (NASH) after 32 weeks of age. We tried to accelerate the onset of NASH in SDT fatty rats using dietary cholesterol loading and noticed changes in the blood choline level which is expected to be a NASH biomarker. Body weight and biochemical parameters were measured from 8 to 24 weeks of age. At 16, 20, 24 weeks, pathophysiological analysis of the livers were performed. Hepatic lipids, lipid peroxides, and the expression of mRNA related to triglyceride (TG) synthesis, inflammation, and fibrosis were evaluated at 24 weeks. Hepatic fibrosis was observed in SDT fatty rats fed cholesterol-enriched diets (SDT fatty-Cho) from 16 weeks. Furthermore, hepatic lipids and lipid peroxide were significantly higher in SDT fatty-Cho than SDT fatty rats fed normal diets at 24 weeks. Hepatic mRNA expression related to TG secretion decreased in SDT fatty-Cho, and the mRNA expression related to inflammation and fibrosis increased in SDT fatty-Cho at 24 weeks. Furthermore, SDT fatty-Cho presented with increased plasma choline, similar to human NASH. There were no significant changes in the effects of feeding a cholesterol-enriched diet in Sprague-Dawley rats. SDT fatty-Cho has the potential to become a valuable animal model for NASH associated with type 2 diabetes and obesity.
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Affiliation(s)
- Y Toriniwa
- Central Pharmaceutical Research Institute, Japan Tobacco Inc., Osaka, Japan.
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Ishii Y, Noguchi H, Sato J, Ishii H, Todoroki K, Toyabe S. Medial and lateral laxity in knees with advanced medial osteoarthritis. Osteoarthritis Cartilage 2018; 26:666-670. [PMID: 29428318 DOI: 10.1016/j.joca.2018.01.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Revised: 01/19/2018] [Accepted: 01/31/2018] [Indexed: 02/02/2023]
Abstract
OBJECTIVE An increase in coronal laxity is recognized as a risk factor for progression of knee osteoarthritis (OA). The purpose of this study was to evaluate coronal laxity, which was defined as the angular motion from the neutral, unloaded (baseline) position to the loaded position, in patients with advanced medial knee OA. METHOD Preoperative coronal laxity was assessed using radiographs in patients with medial knee OA undergoing total knee arthroplasty by applying a force of 150 N with an arthrometer. A consecutive series of 211 knees with OA and 40 normal control knees were examined. A knee with OA was defined as clinically "balanced" when the difference between medial and lateral laxity was 3° or less. Values are expressed as median [25th, 75th percentile]. RESULTS The laxity was 4° [3, 5] from the baseline on the medial side and 3° [2, 4] on the lateral side. The distribution of medial and lateral laxity indicated that 90% (189/211) of patients fell within 3°. The equivalence test showed that the medial and lateral laxity was similar, with an equivalence margin of 3° (P < 0.001). In the control knees, the laxity was 3° [2, 4] from the baseline on the medial side and 2° [2, 4] on the lateral side. The differences between the knees with advanced OA and the controls were significant (P = 0.005, medial; P = 0.006, lateral). CONCLUSION This study showed that a clinically balanced knee was maintained even in patients with advanced medial knee OA.
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Affiliation(s)
- Y Ishii
- Ishii Orthopaedic & Rehabilitation Clinic, 1089 Shimo-Oshi, Gyoda, Saitama 361-0037, Japan.
| | - H Noguchi
- Ishii Orthopaedic & Rehabilitation Clinic, 1089 Shimo-Oshi, Gyoda, Saitama 361-0037, Japan.
| | - J Sato
- Ishii Orthopaedic & Rehabilitation Clinic, 1089 Shimo-Oshi, Gyoda, Saitama 361-0037, Japan.
| | - H Ishii
- Kouseiren Takaoka Hospital, 5-10 Eirakutyo Takaoka, Toyama 933-8555, Japan.
| | - K Todoroki
- Ishii Orthopaedic & Rehabilitation Clinic, 1089 Shimo-Oshi, Gyoda, Saitama 361-0037, Japan.
| | - S Toyabe
- Niigata University Crisis Management Office, Niigata University Hospital, Niigata University Graduate School of Medical and Dental Sciences, 1 Asahimachi Dori Niigata, Niigata 951-8520, Japan.
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Farthing J, Ozeki T, Clement Lorenzo S, Nakajima N, Sartori F, De Tommasi G, Manduchi G, Barbato P, Rigoni A, Vitale V, Giruzzi G, Mattei M, Mele A, Imbeaux F, Artaud JF, Robin F, Noe J, Joffrin E, Hynes A, Hemming O, Wheatley M, O’hira S, Ide S, Ishii Y, Matsukawa M, Kubo H, Totsuka T, Urano H, Naito O, Hayashi N, Miyata Y, Namekawa M, Wakasa A, Oshima T, Nakanishi H, Yamanaka K. Status of the ITER remote experimentation centre. Fusion Engineering and Design 2018. [DOI: 10.1016/j.fusengdes.2018.02.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abstract
A clear correlation between electronic structure and CO2 selectivity for steam reforming of methanol (SRM) was obtained with PdZn, PtZn, NiZn, and PdCd intermetallics on the basis of experiments and calculations. In order to rule out the effects of oxide supports, the intermetallic powders were simply prepared by alloying in an arc furnace followed by crushing in a mortar. PdZn and PdCd exhibit valence electronic densities of states similar to that of Cu and significant chemical shifts (larger than 1 eV) of Pd 3d states with respect to pure Pd, as verified by high-resolution hard X-ray photoelectron spectroscopy (HXPS) measurements and density functional theory (DFT) calculations. Consequently, they show the similar high selectivity of CO2 for the SRM reaction. However, this is not the case for PtZn and NiZn because of the slight differences in their valence electronic structures from that of PdZn. The interval between the Fermi level and the top of the d band is closely related to the selectivity of CO2 for the SRM: the larger the interval is, the higher is the selectivity of CO2. According to DFT calculations for bulk PdZn performed by Chen et al. ( Phys. Rev. B 2003 , 68 , 075417 ), the (111) and (100) surfaces exposing Zn and Pd in an equimolar ratio are more stable than the (001) or (110) surfaces terminated by alternative Zn or Pd layers. First-principles slab calculations for PdZn, PtZn, and NiZn show that bond breaking on the surface leads to a reduction in the d bandwidth but that the d band for stable (111) or (100) surfaces remains essentially unchanged from that of the bulk. It is intriguing that PdZn and PdCd do not contain Cu but show similar valence electronic structure and catalytic selectivity, and hence, a concept is proposed where PdZn and PdCd are regarded as pseudoelements of Cu. The basis of this concept is like electronic structure, like catalysis, which has been demonstrated by experiments and calculations. This is a logical way to enable us to look for new catalysts in which precious metals are partially or completely replaced by base metals. We do not expect that this concept can be applied to all catalytic reactions, but this approach is one of most promising ways to derive a better understanding of the origin of catalytic mechanisms and eventually allow us to design useful catalysts intentionally in the future. This Account reviews the authors' published works on this topic.
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Affiliation(s)
- A. P. Tsai
- Institute
of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
- National Institute for Materials Science, Tsukuba 305-0047, Japan
| | - S. Kameoka
- Institute
of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
| | - K. Nozawa
- Department
of Physics and Astronomy, Kagoshima University, Kagoshima 890-0065, Japan
| | - M. Shimoda
- National Institute for Materials Science, Tsukuba 305-0047, Japan
| | - Y. Ishii
- Department
of Physics, Chuo University, Tokyo 112-8551, Japan
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Ishii Y, Hashimoto Y, Kono S, Izumi S, Iizuka J, Karasawa K. High Dose Rate Brachytherapy With Hypofractionated External Beam Radiation Therapy for High-Risk Prostate Cancer. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Kondo H, Shinohara T, Miyoshi M, Ishii Y, Otsubo T, Takahashi N. P4592Baroreflex sensitivity could predicts the presence of left atrial low voltage zone and atrial fibrillation recurrence after pulmonary vein isolation. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p4592] [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
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Takayama S, Koyanagi K, Miyazaki H, Takami S, Orikasa T, Ishii Y, Kurusu T, Iwata Y, Noda K, Obana T, Suzuki K, Ogitsu T, Amemiya N. Design and Test Results of Superconducting Magnet for Heavy-Ion Rotating Gantry. ACTA ACUST UNITED AC 2017. [DOI: 10.1088/1742-6596/871/1/012083] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Saito T, Muramatsu M, Ishii Y, Saigo Y, Konuma T, Toriniwa Y, Miyajima K, Ohta T. Pathophysiological analysis of the progression of hepatic lesions in STAM mice. Physiol Res 2017; 66:791-799. [PMID: 28730823 DOI: 10.33549/physiolres.933592] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Nonalcoholic steatohepatitis (NASH) is a current health issue since the disease often leads to hepatocellular carcinoma; however, the pathogenesis of the disease has still not been fully elucidated. In this study, we investigated the pathophysiological changes observed in hepatic lesions in STAM mice, a novel NASH model. STAM mice, high fat-diet (HFD) fed mice, and streptozotocin (STZ) treated mice were prepared, and changes over time, such as biological parameters, mRNA expression, and histopathological findings, were evaluated once animal reached 5, 7, and 10 weeks of age. STZ mice presented with hyperglycemia and an increase in oxidative stress in immunohistochemical analyses of Hexanoyl-lysine: HEL from 5 weeks, with fibrosis in the liver also being observed from 5 weeks. HFD mice presented with hyperinsulinemia from 7 weeks and the slight hepatosteatosis was observed at 5 weeks, with changes significantly increasing until 10 weeks. STAM mice at 10 weeks showed significant hepatic changes, including hepatosteatosis, hypertrophic hepatocytes, and fibrosis, indicating pathological changes associated with NASH. These results suggested that the increase in oxidative stress with hyperglycemia triggered hepatic lesions in STAM mice, and insulin resistance promoted lesion formation with hepatic lipid accumulation. STAM mice may be a useful model for elucidating the pathogenesis of NASH with diabetes.
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Affiliation(s)
- T Saito
- Biological/Pharmacological Research Laboratories, Central Pharmaceutical Research Institute, Japan Tobacco Inc., Takatsuki, Osaka, Japan.
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Hino T, Miwa J, Mitsuyasu T, Ishii Y, Ohtsuka M, Moriya K, Shirvan K, Seker V, Hall A, Downar T, Gorman PM, Fratoni M, Greenspan E. Core Design and Analysis of Axially Heterogeneous Boiling Water Reactor for Burning Transuranium Elements. NUCL SCI ENG 2017. [DOI: 10.1080/00295639.2017.1312941] [Citation(s) in RCA: 3] [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: 10/19/2022]
Affiliation(s)
- T. Hino
- Hitachi, Ltd., Center for Technology Innovation—Energy, Research and Development Group, 7-1-1, Omika-cho, Hitachi-shi, Ibaraki-ken 319-1292, Japan
| | - J. Miwa
- Hitachi, Ltd., Center for Technology Innovation—Energy, Research and Development Group, 7-1-1, Omika-cho, Hitachi-shi, Ibaraki-ken 319-1292, Japan
| | - T. Mitsuyasu
- Hitachi, Ltd., Center for Technology Innovation—Energy, Research and Development Group, 7-1-1, Omika-cho, Hitachi-shi, Ibaraki-ken 319-1292, Japan
| | - Y. Ishii
- Hitachi, Ltd., Center for Technology Innovation—Energy, Research and Development Group, 7-1-1, Omika-cho, Hitachi-shi, Ibaraki-ken 319-1292, Japan
| | - M. Ohtsuka
- Hitachi, Ltd., Center for Technology Innovation—Energy, Research and Development Group, 7-1-1, Omika-cho, Hitachi-shi, Ibaraki-ken 319-1292, Japan
| | - K. Moriya
- Hitachi-GE Nuclear Energy, Ltd., 3-1-1, Saiwai-cho, Hitachi-shi, Ibaraki-ken 317-0073, Japan
| | - K. Shirvan
- Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139
| | - V. Seker
- University of Michigan, 2355 Bonisteel Blvd, Ann Arbor, Michigan 48109-2104
| | - A. Hall
- University of Michigan, 2355 Bonisteel Blvd, Ann Arbor, Michigan 48109-2104
| | - T. Downar
- University of Michigan, 2355 Bonisteel Blvd, Ann Arbor, Michigan 48109-2104
| | - P. M. Gorman
- University of California, Berkeley, Berkeley, California 94720
| | - M. Fratoni
- University of California, Berkeley, Berkeley, California 94720
| | - E. Greenspan
- University of California, Berkeley, Berkeley, California 94720
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Ishii Y, Tsukasaki H, Kawaguchi S, Ouchi Y, Mori S. Structural investigation of the SrAl 2 O 4 -BaAl 2 O 4 solid solution system with unstable domain walls. J SOLID STATE CHEM 2017. [DOI: 10.1016/j.jssc.2017.03.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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49
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Honda H, Kubo K, Yamamoto R, Ishii Y, Kanzaki H, Hamamoto Y, Mochizuki T, Oita M, Sasaki M, Tominaga M, Uto Y. EP-1474: Feasibility of dose delivery error detection by a transmission detector for patient-specific QA. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)31909-6] [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]
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50
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Takeji S, Isayama A, Ozeki T, Tokuda S, Ishii Y, Oikawa T, Ishida S, Kamada Y, Neyatani Y, Yoshino R, Takizuka T, Hayashi N, Fujita T, Kurita G, Matsumoto T, Tuda T. Magnetohydrodynamic Stability of Improved Confinement Plasmas in JT-60U. Fusion Science and Technology 2017. [DOI: 10.13182/fst02-a229] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- S. Takeji
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukoyama, Naka-machi, Ibaraki 311-0193, Japan
| | - A. Isayama
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukoyama, Naka-machi, Ibaraki 311-0193, Japan
| | - T. Ozeki
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukoyama, Naka-machi, Ibaraki 311-0193, Japan
| | - S. Tokuda
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukoyama, Naka-machi, Ibaraki 311-0193, Japan
| | - Y. Ishii
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukoyama, Naka-machi, Ibaraki 311-0193, Japan
| | - T. Oikawa
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukoyama, Naka-machi, Ibaraki 311-0193, Japan
| | - S. Ishida
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukoyama, Naka-machi, Ibaraki 311-0193, Japan
| | - Y. Kamada
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukoyama, Naka-machi, Ibaraki 311-0193, Japan
| | - Y. Neyatani
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukoyama, Naka-machi, Ibaraki 311-0193, Japan
| | - R. Yoshino
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukoyama, Naka-machi, Ibaraki 311-0193, Japan
| | - T. Takizuka
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukoyama, Naka-machi, Ibaraki 311-0193, Japan
| | - N. Hayashi
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukoyama, Naka-machi, Ibaraki 311-0193, Japan
| | - T. Fujita
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukoyama, Naka-machi, Ibaraki 311-0193, Japan
| | - G. Kurita
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukoyama, Naka-machi, Ibaraki 311-0193, Japan
| | - T. Matsumoto
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukoyama, Naka-machi, Ibaraki 311-0193, Japan
| | - T. Tuda
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukoyama, Naka-machi, Ibaraki 311-0193, Japan
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