51
|
Arisawa M, Yamaguchi M. Rhodium-Catalyzed Synthesis of Organosulfur Compounds Involving S-S Bond Cleavage of Disulfides and Sulfur. Molecules 2020; 25:E3595. [PMID: 32784672 PMCID: PMC7464046 DOI: 10.3390/molecules25163595] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 07/31/2020] [Accepted: 08/05/2020] [Indexed: 02/05/2023] Open
Abstract
Organosulfur compounds are widely used for the manufacture of drugs and materials, and their synthesis in general conventionally employs nucleophilic substitution reactions of thiolate anions formed from thiols and bases. To synthesize advanced functional organosulfur compounds, development of novel synthetic methods is an important task. We have been studying the synthesis of organosulfur compounds by transition-metal catalysis using disulfides and sulfur, which are easier to handle and less odiferous than thiols. In this article, we describe our development that rhodium complexes efficiently catalyze the cleavage of S-S bonds and transfer organothio groups to organic compounds, which provide diverse organosulfur compounds. The synthesis does not require use of bases or organometallic reagents; furthermore, it is reversible, involving chemical equilibria and interconversion reactions.
Collapse
Affiliation(s)
- Mieko Arisawa
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Sendai 980-8578, Japan;
| | | |
Collapse
|
52
|
Usui E, Yonetsu T, Kanaji Y, Hoshino M, Yamaguchi M, Hada M, Fukuda T, Ohya H, Sumino Y, Hamaya R, Kanno Y, Murai T, Lee T, Kakuta T. Corrigendum to ‘Relationship between optical coherence tomography-derived morphological criteria and functional relevance as determined by fractional flow reserve’ [J. Cardiol. 71 (2018) 359–366/4]. J Cardiol 2020; 76:226-227. [DOI: 10.1016/j.jjcc.2020.04.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
53
|
Sakamoto M, Senoh A, Sato Y, Iijima H, Yamaguchi M, Higuchi T, Koyama Y. SAT0119 PARADOXICAL NEUTROPHIL ACTIVATION BY ANTI-IL6 THERAPY: TRANSCRIPTOME ANALYSIS SHOWS A RATIONALE FOR DERMATOLOGICAL ADVERSE REACTIONS AND DECREASED NEUTROPHIL COUNTS AFTER TOCILIZUMAB TREATMENT. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.3900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:Skin rashes as a side effect of Tocilizumab therapy (TCZ- Tx) has not been paid much attention, because the incidence was only 1~2% in the drug information sheets. However, we experienced several RA cases with development of various skin rashes associated with neutrophil activation after TCZ-Tx. On the other hand, it is well known that the neutrophil counts in peripheral blood decreases after TCZ-Tx, whereas it does not affect the rate of serious infections. The detailed mechanism is still unclear.Objectives:To detect the characteristics of the changes in gene expressions of peripheral blood associated with TCZ-Tx and the development of skin rashes as its side effect.Methods:Total of 14 RA patients with TCZ-Tx were included. Among them, 4 patients developed TCZ-related rashes (group S) and 10 patients did not show any side effects (group C). Peripheral whole blood at just before (pre) and 3 months after (post) TCZ-Tx from each patient were subjected to the analysis. Total RNAs were extracted with PAXgene miRNA kit and analyzed with next-generation sequencing. First, group C was investigated for the normal response to TCZ-Tx. Differentially expressed genes (DEGs) were selected by paired comparison (post vs. pre). And then, enrichment analysis using gene ontology (GO) terms were performed. Second, to explore the characteristics of group S, all expressed genes in 14 cases at just before TCZ-Tx were subjected to a hierarchical clustering analysis. The DEGs (group S vs. C and post vs. pre) were also investigated with weighted gene co-expression network analysis (WGCNA) and GO analysis. Meanwhile, the total eigengene expressions of the important modules identified by WGCNA in each cases were also calculated.Results:Surprisingly, 8 out of the top 10 enriched GO terms in the up-regulated genes were relevant to leukocyte activation such as ‘neutrophil migration” by the analysis of DEGs (post vs. pre) in group C. The cluster analysis of ‘pre’ genes confirmed that the patterns of gene expression between group S and C was different. WGCNA analysis of DEGs (group S vs. C) revealed that genes related to acute inflammation such as ‘leukocyte mediated immunity’ were activated in group S. Interestingly, it was not correlated with disease activity score (DAS) of RA. By the analysis of DEGs (post vs. pre) of upregulated genes, we found that the total eigengene expressions of the module enriched with genes related to ‘cell adhesion’ or ‘leukocyte migration’ were significantly increased in all cases of group S.Conclusion:This is the first evidence that the genes associated with neutrophil migration is significantly activated after TCZ-Tx. It is noteworthy that the gene activation was observed in cases without any side effects. The decreased neutrophil counts in peripheral blood have been known after initiation of TCZ-Tx, which did not affect the rate of serious infections. Recently, It was reported that TCZ affects neutrophil trafficking to the bone marrow1). Our findings will provide a rationale for its cause. On the other hand, we experienced several RA cases with development of various skin rashes associated with neutrophil activation after TCZ-Tx. However, majority of patients do not develop the side effect, even though genes related to ‘neutrophil migration’ are activated. In group S, our findings indicate that the genes related to ‘leukocyte mediated immunity’ was already activated at the initiation of treatment without correlating to DAS of RA, furthermore, the gene upregulation related to ‘leukocyte migration’ was more prominent after TCZ-Tx. Although it is difficult to predict the patients developing skin rashes before TCZ-Tx, we do not recommend to use TCZ for the patients with neutrophilic dermatosis which is often associated with RA.References: :[1]Lok LSCet al.,Eur J Clin Invest. 47(10):736-745 (2017).Disclosure of Interests: :Moe Sakamoto: None declared, Akemi Senoh: None declared, Yoshiharu Sato: None declared, Hiroshi Iijima: None declared, Mari Yamaguchi: None declared, Toshie Higuchi: None declared, Yoshinobu Koyama Grant/research support from: Eli-Lilly and Mochida., Speakers bureau: BMS, Ayumi, Chugai, Ono, Mitsubishi Tanabe, Abbvie and Eisai.
Collapse
|
54
|
Takamori S, Takada K, Shimokawa M, Matsubara T, Haratake N, Miura N, Toyozawa R, Yamaguchi M, Takenoyama M, Okamoto I, Tagawa T, Mori M. PREDICTIVE AND PROGNOSTIC SIGNIFICANCE OF TUMOR LOCATION IN NON-SMALL CELL LUNG CANCER PATIENTS TREATED WITH ANTI-PD-1 THERAPY. Chest 2020. [DOI: 10.1016/j.chest.2020.05.290] [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: 11/16/2022] Open
|
55
|
Nishida T, Yamaguchi M, Miura S, Waga K, Kawabata N, Syaifudin M, Kashiwakura I. Radiomitigative Effects of Approved Hematopoietic Drugs on Mice Exposed to Lethal Total-body Irradiation. Atom Indo 2020. [DOI: 10.17146/aij.2020.950] [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: 11/09/2022] Open
|
56
|
Sawato T, Yamaguchi M. Sequential self‐catalytic reactions in the formation of hetero‐double‐helix and their self‐assembled gels by pseudoenantiomer mixtures of ethynylhelicene oligomers. Chirality 2020; 32:824-832. [DOI: 10.1002/chir.23224] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 03/14/2020] [Accepted: 03/20/2020] [Indexed: 12/19/2022]
Affiliation(s)
- Tsukasa Sawato
- Department of Organic Chemistry, Graduate School of Pharmaceutical SciencesTohoku University Sendai Japan
| | - Masahiko Yamaguchi
- Department of Organic Chemistry, Graduate School of Pharmaceutical SciencesTohoku University Sendai Japan
| |
Collapse
|
57
|
Shinriki S, Maeshiro M, Shimamura K, Kawashima J, Araki E, Ibusuki M, Yamamoto Y, Iwase H, Miyamoto Y, Baba H, Yamaguchi M, Matsui H. Evaluation of an amplicon-based custom gene panel for the diagnosis of hereditary tumors. Neoplasma 2020; 67:898-908. [PMID: 32241160 DOI: 10.4149/neo_2020_190918n925] [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] [Received: 09/18/2019] [Accepted: 11/06/2019] [Indexed: 11/08/2022]
Abstract
Genetic testing based on next-generation sequencing (NGS) analysis has recently been used to diagnose hereditary diseases. In this study, we explored the usefulness of our custom amplicon panel that targeted 23 genes related to hereditary tumors given in the American College of Medical Genetics and Genomics recommendations. We applied our custom NGS panel to samples from 12 patients previously diagnosed by Sanger sequencing as having the diseases or diagnosed clinically by meeting the diagnostic criteria in this study. Our gene panel not only successfully identified all variants detected by Sanger sequencing but also identified previously unrecognized variants that resulted in confirmation of the disease, or even in the revision of the diagnosis. For instance, a patient identified with an SDHD gene mutation actually had von Hippel-Lindau (VHL) syndrome, as determined by the presence of a pathogenic VHL gene variant. We also identified false-positive results that were generated by amplification of genome regions that are not intended to be investigated. In conclusion, NGS-based amplicon sequencing is a highly effective method to detect germline variants, as long as they are also carefully reviewed by manual inspection.
Collapse
Affiliation(s)
- S Shinriki
- Department of Molecular Laboratory Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan.,Department of Laboratory Medicine, Kumamoto University Hospital, Kumamoto, Japan
| | - M Maeshiro
- Department of Laboratory Medicine, Kumamoto University Hospital, Kumamoto, Japan.,Department of Oral and Maxillofacial Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - K Shimamura
- Department of Molecular Laboratory Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan.,Department of Laboratory Medicine, Kumamoto University Hospital, Kumamoto, Japan
| | - J Kawashima
- Department of Metabolic Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - E Araki
- Department of Metabolic Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - M Ibusuki
- Department of Breast and Endocrine Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Y Yamamoto
- Department of Breast and Endocrine Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - H Iwase
- Department of Breast and Endocrine Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Y Miyamoto
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - H Baba
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | | | - H Matsui
- Department of Molecular Laboratory Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan.,Department of Laboratory Medicine, Kumamoto University Hospital, Kumamoto, Japan
| |
Collapse
|
58
|
Sawato T, Iwamoto R, Yamaguchi M. Figure-eight thermal hysteresis of aminomethylenehelicene oligomers with terminal C 16 alkyl groups during hetero-double-helix formation. Chem Sci 2020; 11:3290-3300. [PMID: 34122836 PMCID: PMC8157274 DOI: 10.1039/c9sc06496f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Accepted: 02/25/2020] [Indexed: 11/28/2022] Open
Abstract
1 : 1 mixtures of aminomethylenehelicene (P)-tetramer and (M)-pentamer with terminal C16 alkyl groups in fluorobenzene showed structural changes between hetero-double-helices B and C and random-coils 2A. Figure-eight thermal hysteresis appeared when the solution was cooled and heated at a constant rate and involved the crossing of cooling and heating curves in Δε/temperature profiles. This unusual thermal hysteresis emerged in the intermediate state between counterclockwise and clockwise thermal hystereses. This phenomenon arose from the competition between self-catalytic reactions to form B and C from 2A. Significant effects of terminal C16 alkyl groups on the thermodynamic and kinetic phenomena are also described.
Collapse
Affiliation(s)
- Tsukasa Sawato
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University Aoba Sendai 980-8578 Japan +81 22-795-6811
| | - Rina Iwamoto
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University Aoba Sendai 980-8578 Japan +81 22-795-6811
| | - Masahiko Yamaguchi
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University Aoba Sendai 980-8578 Japan +81 22-795-6811
| |
Collapse
|
59
|
Arisawa M, Fukumoto K, Yamaguchi M. Rhodium-catalyzed phosphorylation reaction of water-soluble disulfides using hypodiphosphoric acid tetraalkyl esters in water. RSC Adv 2020; 10:13820-13823. [PMID: 35492965 PMCID: PMC9051538 DOI: 10.1039/d0ra02377a] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Accepted: 03/23/2020] [Indexed: 12/15/2022] Open
Abstract
RhCl3catalyzed the phosphorylation reaction of water-soluble disulfides, including unprotected glutathione disulfide, with hypodiphosphoric acid tetraalkyl esters in homogeneous water.
Collapse
Affiliation(s)
- Mieko Arisawa
- Department of Organic Chemistry
- Graduate School of Pharmaceutical Sciences
- Tohoku University
- Sendai
- Japan
| | - Kohei Fukumoto
- Department of Organic Chemistry
- Graduate School of Pharmaceutical Sciences
- Tohoku University
- Sendai
- Japan
| | - Masahiko Yamaguchi
- Department of Organic Chemistry
- Graduate School of Pharmaceutical Sciences
- Tohoku University
- Sendai
- Japan
| |
Collapse
|
60
|
Abstract
Compared with conventional semen, use of sexed semen decreases the conception rate (CR); therefore, it is important to address the factors that lead to sperm damage. Recently, a novel sexed semen technology was developed for improving dairy cattle fertility (Betthauser et al. 2016 J. Dairy Sci. 99 (E-Suppl. 1), 534). However, there are few reports about the fertility of this novel sexed semen in dairy cattle in Japan. The objective of this study was to compare the CR of traditional sorting semen (S1: flow cytometry/cell sorting) and the novel sexed semen (S2: SexcelTM, ABS Global Inc.) in Holstein heifers and cows in Japan. The CR for the first insemination was obtained from 391 Holstein cows and 148 heifers (10.7-17.8 months old) from 14 dairy farms in Hokkaido from June 2017 to April 2019. Semen used for AI was collected from six bulls and packaged into 0.25-mL straws and frozen. Cows inseminated with conventional frozen semen (S3: unsexed semen in 0.5-mL straws) were used as controls. Calving data were collected from 123 cows and 69 heifers that had calved between January 2018 and May 2019. The diagnosis of pregnancy was confirmed using ultrasonography between 30 and 45 days after insemination. The CR and sex ratio were analysed using chi-square test. The average parity number was 1.9±1.1, and average days open was 84.9±20.4 days. The average interval between calving and the first service was 86.2±20.3 days. The average milk yield (at 305 days) was 12 195±1595 kg. All of the animals were inseminated after the onset of standing heat or removal of the tail chalk of natural heats and oestrus and ovulation synchronisation programmes on the farm. Conception rates of heifers of the first service of S1 (n=54) and S2 (n=94) were 68.5 and 70.2%, respectively. Conception rates of cows of the first service of S1 (n=32), S2 (n=173), and S3 (n=186) were 56.3, 57.8, and 53.8%, respectively. There were no significant differences in CR between these groups (P>0.4). The proportion of female calves produced using S1 (n=61) and S2 (n=57) was 91.8 and 93.0%, respectively, which was significantly more (P<0.01) compared with the 50.0% produced using S3 (n=74). There were no significant differences between S1 and S2 (P>0.8) in terms of the proportion of calves produced. The results of this study demonstrated that the traditional sorting and novel sexed semen (S1 and S2, respectively) did not differ in terms of the first-service CR and produced considerably more female calves than when the conventional semen (S3) was used. Furthermore, these findings indicate that the use of this novel sexed semen could achieve a sex ratio close to 90% female offspring.
Collapse
|
61
|
Arisawa M, Yamaguchi M, Nakai K, Yamada T, Suzuki R. Synthesis of Cycloalkyl/Steroidal Heteroaryl Sulfides Using Rhodium-Catalyzed Heteroaryl Exchange Reaction. HETEROCYCLES 2020. [DOI: 10.3987/com-19-14147] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
62
|
Hegedűs M, Shiroma Y, Iwaoka K, Hosoda M, Suzuki T, Tamakuma Y, Yamada R, Tsujiguchi T, Yamaguchi M, Ogura K, Tazoe H, Akata N, Kashiwakura I, Tokonami S. Cesium concentrations in various environmental media at Namie, Fukushima. J Radioanal Nucl Chem 2019. [DOI: 10.1007/s10967-019-06942-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
63
|
Abstract
Diaryl ethers containing condensed polycyclic aryl groups were synthesized from arenols in the presence of a catalytic amount of p-chlorobenzenesulfonic acid. Symmetrical binaphthyl, biphenanthryl, and bipyrenyl ethers were obtained in high yields. Unsymmetrical derivatives were also synthesized from 9-phenanthrol and arenols, using combinations of reactive and unreactive substrates.
Collapse
Affiliation(s)
- Saori Tanii
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Sendai, 980-8578, Japan.
| | | | | |
Collapse
|
64
|
Saeki S, Hotta K, Yamaguchi M, Harada D, Bessho A, Tanaka K, Inoue K, Gemba K, Inoue K, Ichihara E, Kishimoto J, Sasaki T, Shioyama Y, Katsui K, Sasaki J, Kiura K, Sugio K. Induction gefitinib followed by standard chemoradiotherapy in locally advanced (LA) non-small cell lung cancer (NSCLC) with epidermal growth factor receptor (EGFR) activating mutations: The LOGIK0902/OLCSG0905 intergroup phase II study. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz436] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
|
65
|
Sugiyama T, Kanno Y, Hamaya R, Hoshino M, Usui E, Kanaji Y, Yamaguchi M, Hada M, Ohya H, Sumino Y, Hirano H, Yuki H, Horie T, Yonetsu T, Kakuta T. P3578Determinants of visual-functional mismatches as assessed by coronary angiography and 3-D angiography-based quantitative flow ratio. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0439] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Quantitative flow ratio (QFR) is a novel three-dimensional quantitative coronary angiography (QCA)-based computational index that can estimate fractional flow reserve (FFR) without pharmacologically induced hyperemia or the use of a pressure wire.
Purpose
We aimed to evaluate the determinants of visual-functional mismatches between conventional two-dimensional QCA and QFR.
Methods
A total of 504 de novo intermediate-to-severe lesions from 504 patients with stable angina who underwent angiographical and physiological assessments were analyzed. All lesions were divided into four groups based on the significance of visual (QCA-diameter stenosis [DS] >50% and ≤50%) and functional (QFR <0.80 and ≥0.80) stenosis severity. Patient characteristics, angiographic findings, QFR computations, and physiological indices were compared among the four groups.
Results
Among 504 lesions, 153 lesions (30.4%) showed concordantly negative (DS ≤50% and QFR >0.80) and 170 lesions (33.7%) showed concordantly positive (DS >50% and QFR ≤0.80) visual and functional assessments. Among 181 lesions (35.9%) with discordant results, 75 lesions (14.9%) showed a mismatch (DS >50% and QFR >0.80) and 106 lesions (21.0%) showed a reverse mismatch (DS ≤50% and QFR ≤0.80), respectively. Reverse mismatch was associated with smaller reference diameter (odds ratio [OR] 0.561; P=0.036), greater DS (OR 1.039, P=0.013), lower coronary flow reserve (CFR) (OR 0.571, P<0.001, non-diabetes mellitus (OR 2.141, P=0.013) and lower ejection fraction (OR 0.961, P=0.011). Mismatch was associated with smaller DS (OR 0.914, P<0.001), shorter lesion length (OR 0.894, P=0.001), higher CFR (OR 1,633, P<0.001), and lower estimated glomerular filtration rate (OR, 0.968, P=0.001). Lesion location and the index of microcirculatory resistance was not associated with the prevalence of reverse mismatch or mismatch.
Conclusions
There was a high prevalence of visual-functional mismatches between QCA-DS and QFR, and CFR was an important functional factor of mismatches. Our results suggested the difference between predictors of reported visual-functional mismatches of QCA/FFR and those of QCA/QFR.
Collapse
Affiliation(s)
- T Sugiyama
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - Y Kanno
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - R Hamaya
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - M Hoshino
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - E Usui
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - Y Kanaji
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - M Yamaguchi
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - M Hada
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - H Ohya
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - Y Sumino
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - H Hirano
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - H Yuki
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - T Horie
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - T Yonetsu
- Tokyo Medical and Dental University, Tokyo, Japan
| | - T Kakuta
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| |
Collapse
|
66
|
Kanno Y, Hoshio M, Sugiyama T, Kanaji Y, Yamaguchi M, Hada M, Ohya H, Sumino Y, Hirano H, Horie T, Yuki H, Yonetsu T, Kakuta T. P2705Hybrid QFR-FFR decision making strategy for revascularization. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.1022] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Measurement of the fractional flow reserve (FFR) has become a standard practice for revascularization decision-making in evaluating the functional significance of angiographically intermediate epicardial coronary stenosis. The quantitative flow ratio (QFR) is a novel method for rapid computational estimation of FFR without pressure wire and vasodilator drugs.
Purpose
Nevertheless, the evidence was shown the clinical better outcome of coronary revascularization stratified by FFR, the adoption of FFR remains low. We hypothesized that combined QFR and FFR hybrid strategy could improve the physiological assessment without pressure wire and drugs.
Methods and results
We performed a post-hocanalysis of 549 vessels with angiographically intermediate stenosis in 549 patients who underwent measurement of FFR. The median FFR and QFR values were 0.81 (0.73–0.87) and 0.79 (0.74–0.87), respectively.The ischemic threshold was defined as 0.80 for both QFR and FFR measures. The diagnostic sensitivity, specificity, accuracy, positive predictive value, and negative predictive value of the QFR for predicting an FFR of ≤0.80 were 86.2%, 71.9%, 78.9%, 74.5%, and 84.5%, respectively. The area under the receiver operating characteristic curve using the cut-off threshold of ≤0.80 for the FFR was 0.85 (95% confidence interval [CI], 0.81–0.88) for the QFR.In total, 433 (78.9%) and 116 (21.1%) lesions showed concordant and discordant FFR and QFR functional classifications, respectively. A hybrid QFR-FFR strategy was developed, by allowing deferral when QFR values providing negative predictive value greater than 90% and treat others when QFR values greater than that showing 90% positive predictive value, with adenosine being given only to patients with QFR in between those values. For the FFR cut-off (0.8), an QFR of <0.73 could be used to confirm treatment (PPV of 90.7%), while an QFR value of >0.83 could be used to defer revascularization (NPV of 90.0%). When QFR values fall between 0.73 and 0.84, adenosine is given for hyperemic induction and the FFR cut-off of 0.8 is used to guide revascularization. This hybrid QFR-FFR approach has a 95% agreement with an FFR-only decision making, and 285 lesions (51.9%) would have obviated the need of a pressure wire and adenosine.
Hybrid QFR-FFR strategy
Conclusions
A hybrid QFR-FFR strategy for coronary revascularization could reduce the need of a pressure wire and vasodilator drugs, which may increase the penetration of functional assessment of coronary lesions.
Collapse
Affiliation(s)
- Y Kanno
- Tsuchiura Kyodo Hospital, Cardiology, Tsuchiura, Japan
| | - M Hoshio
- Tsuchiura Kyodo Hospital, Cardiology, Tsuchiura, Japan
| | - T Sugiyama
- Tsuchiura Kyodo Hospital, Cardiology, Tsuchiura, Japan
| | - Y Kanaji
- Tsuchiura Kyodo Hospital, Cardiology, Tsuchiura, Japan
| | - M Yamaguchi
- Tsuchiura Kyodo Hospital, Cardiology, Tsuchiura, Japan
| | - M Hada
- Tsuchiura Kyodo Hospital, Cardiology, Tsuchiura, Japan
| | - H Ohya
- Tsuchiura Kyodo Hospital, Cardiology, Tsuchiura, Japan
| | - Y Sumino
- Tsuchiura Kyodo Hospital, Cardiology, Tsuchiura, Japan
| | - H Hirano
- Tsuchiura Kyodo Hospital, Cardiology, Tsuchiura, Japan
| | - T Horie
- Tsuchiura Kyodo Hospital, Cardiology, Tsuchiura, Japan
| | - H Yuki
- Tsuchiura Kyodo Hospital, Cardiology, Tsuchiura, Japan
| | - T Yonetsu
- Tokyo Medical and Dental University, Department of Cardiovascular Medicine, Tokyo, Japan
| | - T Kakuta
- Tsuchiura Kyodo Hospital, Cardiology, Tsuchiura, Japan
| |
Collapse
|
67
|
Hoshino M, Kanaji Y, Sugiyama T, Yamaguchi M, Ohya H, Sumino Y, Hada M, Kanno Y, Hirano H, Horie T, Yonetsu T, Kakuta T. P5619Comparison of different resting physiological indices: are diastolic pressure ratio and resting full-cycle ratio equal? Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0563] [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
Previous reports showed all diastolic resting indexes tested were virtually identical to the instantaneous wave-free ratio (iFR). Although RFR has been also reported to be diagnostically equivalent to iFR, no comparisons have been reported about the prevalence and characteristics of discordance in diagnosis between diastolic pressure ratio (dPR) and resting full-cycle ratio (RFR).
Purpose
This study sought to determine the coronary pressure characteristics of lesions classified as discordant between dPR and RFR in angiographically intermediate stenoses.
Methods
We recruited 532 patients with 668 intermediate (angiographically stenosis between 30% to 70% severity) coronary lesions undergoing FFR assessment and analyzed DICOM pressure tracings of resting state (dPR and RFR) using a fully automated off-line software algorithm in a blind fashion. Diagnostic performance of dPR and RFR was evaluated using FFR as a reference. Furthermore, we investigated similarity and difference between dPR and RFR.
Results
Median FFR was 0.81 with an interquartile range of 0.74 to 0.87. RFR was highly correlated to dPR (R2=0.94, p<0.001), with a mean bias of 0.012 (95% limits of agreement −0.008 to 0.031). The diagnostic performance of RFR versus dPR was diagnostic accuracy 95.4%, sensitivity 100.0%, specificity 91.6%, positive predictive value 90.6%, negative predictive value 100.0%). Using the binary cut-off of dPR ≤0.89 as a cut-off value, RFR showed near identical agreement according to ROC curve analysis (AUC: 0.996, 95% CI: 0.994–0.999, p<0.001). Although dPR and RFR demonstrated equivalent performance against FFR ≤0.8 (79.5% vs. 79.3% accuracy; p=0.960; area under the receiver-operating characteristic curve: 0.869 vs. 0.870; p=0.528), RFR disagreed with dPR in 4.6% (31 of 668). When all lesions (668 vessels) were divided into groups according to the concordance and discordance between dPR and RFR: RFR+/dPR+ (298 vessels, n=240), RFR+/dPR– (31 vessels, n=31 patients), RFR-/dPR- (339 vessels, n=259). There was no lesion showing RFR-/dPR+. The prevalence of ischemia was tended to be higher in lesions evaluated by RFR (49.3% vs 44.6%, P=0.100) when using FFR ≤0.80 as a reference standard. An overall significant difference in the prevalence of FFR ≤0.80 and the FFR values were detected among these 3 groups. Furthermore, pairwise comparison also revealed the prevalence of FFR >0.80 and the FFR values were significantly lower in RFR+/dPR– than in RFR-/dPR-, and significantly higher in RFR+/dPR– than in RFR+/dPR+. (P<0.001 and P<0.001, respectively)
Conclusion
Significant difference in FFR values was observed according to dPR/RFR agreement and disagreement. Revascularization decision making might defer according to the resting index used. Compared with RFR, lesions might be more frequently deferred when dPR was used to assess physiological significance.
Acknowledgement/Funding
None
Collapse
Affiliation(s)
- M Hoshino
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - Y Kanaji
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - T Sugiyama
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - M Yamaguchi
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - H Ohya
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - Y Sumino
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - M Hada
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - Y Kanno
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - H Hirano
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - T Horie
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - T Yonetsu
- Tokyo Medical and Dental University, Tokyo, Japan
| | - T Kakuta
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| |
Collapse
|
68
|
Hirano H, Kanaji Y, Horie T, Yuki H, Kanno Y, Ohya H, Hada M, Sumino Y, Yamaguchi M, Hoshino M, Sugiyama T, Yonetsu T, Kakuta T. P2704The association between global coronary flow reserve and coronary inflammation assessed by attenuation index on computed tomography in patients with stable angina pectoris. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.1021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Impaired global coronary flow reserve (G-CFR) is known to predict worse outcomes in patients with coronary artery disease. Phase contrast cine-magnetic resonance imaging (PC-CMR) of the coronary sinus (CS) is a promising approach for quantifying coronary sinus flow (CSF) and G-CFR without the need for ionizing radiation, radioactive tracers, or intravascular catheterization. Although G-CFR impairment is previously reported to be linked with endothelium dysfunction and progression of atherosclerosis, the association of perivascular adipose tissue inflammation with myocardial coronary flow remains to be determined.
Purpose
We evaluated the association between G-CFR by quantifying CSF using PC-CMR and the extent of coronary inflammation evaluated by perivascular adipose tissue inflammatory status using CT to assess if coronary inflammation is linked with G-CFR in patients with stable angina pectoris (SAP) treated with elective percutaneous coronary intervention (PCI).
Methods
The study enrolled 74 SAP patients with single denovo lesion who underwent coronary CT angiography and PC-CMR within 90 days before coronary intervention. Proximal 40-mm segments of all three major epicardial coronary vessels were traced and examined. Coronary inflammation was assessed by the CT fat attenuation index of perivascular adipose tissue (FAI-PVAT) defined as the mean attenuation of the perivascular adipose tissue (−190 to −30 Hounsfield units (HU)) in a layer of tissue within a radial distance from the outer coronary artery wall equal to the diameter of the vessel. CMR images were also acquired to assess absolute CSF at rest and during maximum hyperemia before elective PCI. The patients were divided into 4 groups according to the number of inflamed vessels as defined by showing FAI ≥−70.1 HU.
Results
In the final analysis of 69 patients (mean age 67, Male 45 (65.2%)), 18, 19, 20, 12 patients exhibited none, 1, 2, 3 inflamed vessels with FAI ≥−70.1 HU, respectively. Rest and maximal hyperemic CSF and corrected G-CFR were 1.28 [0.76,1.55] vs 1.47 [1.11, 1.81] vs 1.30 [0.94, 1.64] vs 1.27 [1.11, 2.00] ml/min/g; P=0.49, 3.50 [2.84, 5.25] vs 3.28 [2.62, 4.31] vs 3.11 [2.16, 3.63] vs 2.37 [1.40, 2.98] ml/min/g; P=0.049, 3.57 [2.17, 4.54] vs 2.25 [1.73, 3.49] vs 2.26 [1.64, 3.38] vs 1.89 [0.89, 2.32]; P=0.023, respectively. G-CFR and hyperemic CSF were both significantly lower in the group with larger number of inflamed vessels.
Conclusions
In SAP patients with significant coronary artery stenosis, G-CFR obtained by PC-CMR significantly associated with the prevalence of inflamed vessels detected by coronary CT. The extent of coronary inflammation may influence global coronary endothelium dysfunction, resulting in decreased G-CFR.
Collapse
Affiliation(s)
- H Hirano
- Tsuchiura Kyodo Hospital, Tsuchiura, Japan
| | - Y Kanaji
- Tsuchiura Kyodo Hospital, Tsuchiura, Japan
| | - T Horie
- Tsuchiura Kyodo Hospital, Tsuchiura, Japan
| | - H Yuki
- Tsuchiura Kyodo Hospital, Tsuchiura, Japan
| | - Y Kanno
- Tsuchiura Kyodo Hospital, Tsuchiura, Japan
| | - H Ohya
- Tsuchiura Kyodo Hospital, Tsuchiura, Japan
| | - M Hada
- Tsuchiura Kyodo Hospital, Tsuchiura, Japan
| | - Y Sumino
- Tsuchiura Kyodo Hospital, Tsuchiura, Japan
| | | | - M Hoshino
- Tsuchiura Kyodo Hospital, Tsuchiura, Japan
| | - T Sugiyama
- Tsuchiura Kyodo Hospital, Tsuchiura, Japan
| | - T Yonetsu
- Tokyo Medical and Dental University, Tokyo, Japan
| | - T Kakuta
- Tsuchiura Kyodo Hospital, Tsuchiura, Japan
| |
Collapse
|
69
|
Uchida Y, Kinose D, Noma K, Tsugawa T, Aoki K, Nakagawa H, Fukunaga K, Yamaguchi M, Osawa M, Tanaka-Mizuno S, Ogawa E, Nakano Y. P2.05-06 New Dosimetric Parameters Encompassing High Attenuation Enables More Accurate Prediction of Radiation Pneumonitis in Various Types of Cancers. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1605] [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: 10/25/2022]
|
70
|
Shiroma Y, Hosoda M, Iwaoka K, Hegedűs M, Kudo H, Tsujiguchi T, Yamaguchi M, Akata N, Kashiwakura I, Tokonami S. CHANGES OF ABSORBED DOSE RATE IN AIR BY CAR-BORNE SURVEY IN NAMIE TOWN, FUKUSHIMA PREFECTURE AFTER THE FUKUSHIMA DAIICHI NUCLEAR POWER PLANT ACCIDENT. Radiat Prot Dosimetry 2019; 184:527-530. [PMID: 31038712 DOI: 10.1093/rpd/ncz096] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The latest car-borne survey was carried out by Hirosaki University in order to grasp the local distribution of the absorbed dose rate in air after the evacuation order was lifted on Namie Town in 2017. The car-borne survey of absorbed dose rate in air was carried out on most of the roads which were accessible by car in Namie Town using a 3-in × 3-in NaI(Tl) scintillation spectrometer. The range of the absorbed dose rate in air was calculated to be 0.041-11 μGy h-1. The distribution maps of the absorbed dose rate in air were drawn based on the data obtained during the surveys in 2011, 2015 and 2017. The comparison of these absorbed dose rates in air suggests that the elevated absorbed dose rate in air in Namie Town caused by the FDNPP accident may be decreasing faster than natural decline which includes weathering effect and physical decay due to the artificial decontamination.
Collapse
Affiliation(s)
- Y Shiroma
- Hirosaki University Graduate School of Health Sciences, Hirosaki, Japan
| | - M Hosoda
- Hirosaki University Graduate School of Health Sciences, Hirosaki, Japan
| | - K Iwaoka
- National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - M Hegedűs
- Hirosaki University Institute of Radiation Emergency Medicine, Hirosaki, Japan
| | - H Kudo
- Hirosaki University Graduate School of Health Sciences, Hirosaki, Japan
| | - T Tsujiguchi
- Hirosaki University Graduate School of Health Sciences, Hirosaki, Japan
| | - M Yamaguchi
- Hirosaki University Graduate School of Health Sciences, Hirosaki, Japan
| | - N Akata
- National Institute for Fusion Science, Toki, Japan
- SOKENDAI (The Graduate University for Advanced Studies), Toki, Japan
| | - I Kashiwakura
- Hirosaki University Graduate School of Health Sciences, Hirosaki, Japan
| | - S Tokonami
- Hirosaki University Institute of Radiation Emergency Medicine, Hirosaki, Japan
| |
Collapse
|
71
|
Yamaguchi M, Matsubara T, Takamori S, Haratake N, Toyozawa R, Miura N, Seto T, Takenoyama M. EP1.01-105 Experience in Treating Recurrent Non-Small Lung Cancer Patients After Surgery with Immune-Checkpoint Inhibitor. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.2075] [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: 10/25/2022]
|
72
|
Horie T, Hoshino M, Hirano H, Kanno Y, Ohya H, Sumino Y, Hada M, Yamaguchi M, Kanaji Y, Sugiyama T, Yonetsu T, Kakuta T. P5617Repeatability of instantaneous wave-free ratio in comparison with fractional flow reserve. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Instantaneous wave-free ratio (iFR) has been recently introduced as an adenosine free alternative for fractional flow reserve (FFR) to assess the functional significance of epicardial coronary stenosis. Little is known, however, regarding the repeatability and stability of iFR in comparison with FFR.
Purpose
The aim of this study was to evaluate the repeatability of iFR and compare it to that of FFR.
Methods
Patients with stable coronary artery disease who underwent physiological assessment twice within 90 days were enrolled. Repeated measurements were performed at diagnostic and therapeutic catheterization in about 70% of studied population. The remaining patients were measured twice for non-culprit lesion assessment at primary PCI and subsequent non-culprit and ischemia-documented lesion PCI. The calculation of iFRmatlab from DICOM pressure tracing data of resting state was performed using a fully automated off-line software algorithm in a blind fashion. FFR values were also measured by a fully automated algorithm in the same core laboratory by using hyperemic pressure tracing data. The repeatability of the two indices were evaluated and compared. The inter-rater agreement between iFRmatlab and FFR values of two measurements was assessed by κ coefficient. The pressure rate product during each assessment was also documented and evaluated.
Results
Ninety-three lesions from 92 patients were included in the study. The time interval between the two assessments was 38.4±19.0 days. iFRmatlab and FFR both showed significant correlation within the two assessments (iFRmatlab: r=0.75, 95% confidence interval, 0.64 to 0.83; mean difference, −0.006 [−0.18 to −0.01], FFR: r=0.86, 95% confidence interval, 0.79 to 0.90; mean difference, 0.004 [−0.07 to 0.03]). The inter-rater agreement of functional ischemia for iFRmatlab and FFR were κ=0.449 and κ=0.732, respectively. Although the prevalence of functional ischemia during the first and second assessment were consistent for both indices (iFRmatlab: 70.0%/67.7%, FFR: 86.0%/ 86.0%), significant difference was observed in the prevalence of clinical disagreement on the diagnosis of functional ischemia (FFR=0.80, iFR=0.89 used as cut-off values, respectively) between the first and second assessment among the two indices (iFRmatlab: 6.5%, FFR: 23.7%, p=0.002). iFRmatlab was significantly associated with pressure rate product during the examination compared to FFR (iFRmatlab: r= −0.25, 95% confidence interval, −0.43 to −0.04, P=0.018, FFR: r=−0.08, 95% confidence interval, −0.28 to −0.13, p=0.467).
Conclusion
Our results suggested that iFRmatlab showed lower repeatability and reliability for decision making compared to FFR. The instability of iFRmatlab potentially derives at least in part from its association with heart rate and blood pressure product.
Collapse
Affiliation(s)
- T Horie
- Tsuchiura Kyodo General Hospital, Ibaraki, Japan
| | - M Hoshino
- Tsuchiura Kyodo General Hospital, Ibaraki, Japan
| | - H Hirano
- Tsuchiura Kyodo General Hospital, Ibaraki, Japan
| | - Y Kanno
- Tsuchiura Kyodo General Hospital, Ibaraki, Japan
| | - H Ohya
- Tsuchiura Kyodo General Hospital, Ibaraki, Japan
| | - Y Sumino
- Tsuchiura Kyodo General Hospital, Ibaraki, Japan
| | - M Hada
- Tsuchiura Kyodo General Hospital, Ibaraki, Japan
| | - M Yamaguchi
- Tsuchiura Kyodo General Hospital, Ibaraki, Japan
| | - Y Kanaji
- Tsuchiura Kyodo General Hospital, Ibaraki, Japan
| | - T Sugiyama
- Tsuchiura Kyodo General Hospital, Ibaraki, Japan
| | - T Yonetsu
- Tokyo Medical and Dental University, Cardiology, Tokyo, Japan
| | - T Kakuta
- Tsuchiura Kyodo General Hospital, Ibaraki, Japan
| |
Collapse
|
73
|
Masuda N, Ohtani S, Nagai S, Takashima S, Yamaguchi M, Tsuneizumi M, Komoike Y, Osako T, Ito Y, Ikeda M, Ishida K, Nakayama T, Takashima T, Asakawa T, Matsumoto S, Shimizu D, Takahashi M. Pertuzumab, trastuzumab, and docetaxel for HER2-positive metastatic breast cancer: Results of single arm phase IV COMACHI study. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz242.048] [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: 11/13/2022] Open
|
74
|
Kanno Y, Hoshino M, Sugiyama T, Kanaji Y, Yamaguchi M, Hada M, Ohya H, Sumino Y, Hirano H, Horie T, Yonetsu T, Kakuta T. P2703Impact of subtended myocardial mass on the assessment of functional ischemia as evaluated by FFR and QFR. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.1020] [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
The fractional flow reserve (FFR) becomes a standard practice for revascularization decision-making in evaluating the functional significance of angiographically intermediate epicardial coronary stenosis. The quantitative flow ratio (QFR) is a novel method for rapid computational estimation of FFR without pressure wire and hyperemic induction. FFR has been reported to be associated with not only epicardial stenosis but also subtended myocardial mass (Vsub). In contrast, the relationship between QFR and Vsub has not been clarified.
Purpose
We sought to examine if subtended myocardial mass (Vsub) assessed by coronary computed tomography showed a significant relationship with QFR in comparison with FFR.
Methods and results
We performed a post-hoc analysis of 152 territories (LAD 116, RCA 25 and LCX 11 lesions) with angiographically intermediate-to-severe stenosis in 152 patients who underwent FFR assessment. The median FFR and QFR values were 0.76 (0.64–0.84) and 0.76 (0.72–0.83), respectively. The median diameter stenosis (%DS) and minimum lumen diameter (MLD) were 54.5 (43.9–64.2) and 1.2 (0.9–1.6), respectively. In total, 123 (80.9%) and 29 (19.1%) lesions showed concordant and discordant FFR and QFR functional classifications, respectively. The ability of Vsub/MLD2 to discriminate lesions with FFR≤0.80 and QFR≤0.80 was assessed compared with QCA data. FFR values were associated with Vsub (R=0.37, P<0.001). In contrast, a trend albeit no significant linear relationshipwas detected between QFR and Vsub (R=0.15, P=0.060). The area under the curve (AUC) of Vsub/MLD2 predicting FFR≤0.80 (0.88: 95% confidence interval [CI], 0.83–0.94)was significantly better than that of MLD (0.80: 95% [CI], 0.72–0.88) (P<0.001). On the other hand, the AUC of Vsub/MLD2 predicting QFR≤0.80 (0.82: 95% [CI], 0.75–0.90) was similar to that of MLD (0.80: 95% [CI], 0.72–0.87) (P=0.276). Multivariate analysis showed that the value of Vsub/MLD2 was an independent predictor of FFR≤0.80 (odds ratio [OR]: 1.09, 95% [CI]: 1.03–1.15, P=0.002), whereas it was not an independent predictor of QFR≤0.80.
Conclusions
Subtended cardiac mass volume derived from CT segmentation improved the diagnostic performance of angiography-derived parameters to identify ischemia-producing lesions when FFR used as a reference standard, whereas QFR showed non-significant relationship with subtended cardiac mass.
Collapse
Affiliation(s)
- Y Kanno
- Tsuchiura Kyodo Hospital, Cardiology, Tsuchiura, Japan
| | - M Hoshino
- Tsuchiura Kyodo Hospital, Cardiology, Tsuchiura, Japan
| | - T Sugiyama
- Tsuchiura Kyodo Hospital, Cardiology, Tsuchiura, Japan
| | - Y Kanaji
- Tsuchiura Kyodo Hospital, Cardiology, Tsuchiura, Japan
| | - M Yamaguchi
- Tsuchiura Kyodo Hospital, Cardiology, Tsuchiura, Japan
| | - M Hada
- Tsuchiura Kyodo Hospital, Cardiology, Tsuchiura, Japan
| | - H Ohya
- Tsuchiura Kyodo Hospital, Cardiology, Tsuchiura, Japan
| | - Y Sumino
- Tsuchiura Kyodo Hospital, Cardiology, Tsuchiura, Japan
| | - H Hirano
- Tsuchiura Kyodo Hospital, Cardiology, Tsuchiura, Japan
| | - T Horie
- Tsuchiura Kyodo Hospital, Cardiology, Tsuchiura, Japan
| | - T Yonetsu
- Tokyo Medical and Dental University, Department of Cardiovascular Medicine, Tokyo, Japan
| | - T Kakuta
- Tsuchiura Kyodo Hospital, Cardiology, Tsuchiura, Japan
| |
Collapse
|
75
|
Tsujiguchi T, Shiroma Y, Suzuki T, Tamakuma Y, Yamaguchi M, Iwaoka K, Hosoda M, Tokonami S, Kashiwakura I. INVESTIGATION OF EXTERNAL RADIATION DOSES DURING RESIDENTS' TEMPORAL STAY TO NAMIE TOWN, FUKUSHIMA PREFECTURE. Radiat Prot Dosimetry 2019; 184:514-517. [PMID: 31323670 DOI: 10.1093/rpd/ncz107] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 04/04/2019] [Indexed: 06/10/2023]
Abstract
Namie Town in Fukushima Prefecture, the majority of which was an evacuation area as a result of the effects of the Fukushima Daiichi Nuclear Power Plant accident, carried out a 'temporal stay' in September 2016 so that residents could check their houses. Therefore, in cooperation with the town authorities, the authors distributed personal dosemeters and behaviour record forms to record the personal dose equivalent rate and investigate the relationship between residents' external radiation dose and their behaviour. When the personal dose equivalent rate was calculated from the measured personal dose equivalent per hour, the median was 0.12 μSv h-1, the maximum value and the minimum value were 0.58 and 0.06 μSv h-1, respectively. Meanwhile, since personal fluctuations were observed in personal dose equivalent, grasping the relationship between residents' behaviour and exposed dose can be applied to risk communication.
Collapse
Affiliation(s)
- T Tsujiguchi
- Hirosaki University Graduate School of Health Sciences, Hirosaki, Japan
| | - Y Shiroma
- Hirosaki University Graduate School of Health Sciences, Hirosaki, Japan
| | - T Suzuki
- Hirosaki University Graduate School of Health Sciences, Hirosaki, Japan
| | - Y Tamakuma
- Hirosaki University Graduate School of Health Sciences, Hirosaki, Japan
| | - M Yamaguchi
- Hirosaki University Graduate School of Health Sciences, Hirosaki, Japan
| | - K Iwaoka
- Hirosaki University Institute of Radiation Emergency Medicine, Hirosaki, Japan
- National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - M Hosoda
- Hirosaki University Graduate School of Health Sciences, Hirosaki, Japan
| | - S Tokonami
- Hirosaki University Institute of Radiation Emergency Medicine, Hirosaki, Japan
| | - I Kashiwakura
- Hirosaki University Graduate School of Health Sciences, Hirosaki, Japan
| |
Collapse
|
76
|
Hoshino M, Yonetsu T, Kanaji Y, Sugiyama T, Yamaguchi M, Hada M, Ohya H, Sumino Y, Kanno Y, Hirano H, Horie T, Murai T, Koo BK, Escaned J, Kakuta T. 6113Gender differences in long-term outcomes in patients with deferred revascularization following fractional flow reserve assessment: international collaboration registry of physiologic evaluation. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0139] [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
Studies of sex differences in fractional flow reserve (FFR) measurements have shown that in comparison with men, angiographic lesions of similar visual severity are less likely to be ischemia producing in women. Gender specific differences may influence revascularization decision making and prognosis after deferred revascularization following FFR measurement.
Purpose
This study sought to investigate the gender difference in long-term prognosis of patients of deferred revascularization following FFR assessment.
Methods
A total of 879 patients (879 vessels) with deferred revascularization with FFR >0.75 who underwent FFR and CFR measurements were enrolled from 3 countries (Korea, Japan, and Spain). Long-term outcomes were assessed in 649 men and 230 women by the patient-oriented composite outcome (POCO, a composite of any death, any myocardial infarction [MI], and any revascularization). We applied inverse-probability weighting (IPW) based on propensity scores to account for differences at baseline between women and men (age, hypertension, hyperlipidemia, diabetes mellitus, lesion location, clinical status, FFR, Reference diameter, Diameter stenosis, lesion length). The median follow-up duration was 1855 days (745–1855 days).
Results
Median FFR values were 0.88 (0.83–0.93) in men and 0.89 (0.85–0.94) in women, respectively. The occurrences of POCO were significantly high in men compared with that in women (10.5% vs 4.2%, P=0.007). Kaplan–Meier analysis revealed that women had a significantly lower risk of POCO (χ2=7.2, P=0.007). Multivariate COX regression analysis revealed that age, male, diabetes mellitus, diameter stenosis, lesion length, and coronary flow reserve were independent predictors of POCO. After applying IPW, the hazard ratio of male for POCO was 2.20 (95% confidence interval: 1.12 to 4.33, P=0.023).
Conclusion
This large multinational study reveals that long-term outcome differs between women and men in favour of women after FFR-guided revascularization deferral.
Acknowledgement/Funding
None
Collapse
Affiliation(s)
- M Hoshino
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - T Yonetsu
- Tokyo Medical and Dental University, Tokyo, Japan
| | - Y Kanaji
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - T Sugiyama
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - M Yamaguchi
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - M Hada
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - H Ohya
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - Y Sumino
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - Y Kanno
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - H Hirano
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - T Horie
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - T Murai
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - B K Koo
- Seoul National University Hospital, Seoul, Korea (Republic of)
| | - J Escaned
- Hospital Clinic San Carlos, Madrid, Spain
| | - T Kakuta
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| |
Collapse
|
77
|
Kanaji Y, Sugiyama T, Hoshino M, Hirano H, Horie T, Kanno Y, Ohya H, Sumino Y, Hada M, Yamaguchi M, Yuki H, Yonetsu T, Kakuta T. P2239The association between global coronary flow reserve and coronary inflammation assessed by fat attenuation index on computed tomography in patients with acute coronary syndrome. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0717] [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
Impaired global coronary flow reserve (G-CFR) is known to predict worse outcomes in patients with coronary artery disease. Phase contrast cine-magnetic resonance imaging (PC-CMR) of the coronary sinus (CS) is a promising approach for quantifying coronary sinus flow (CSF) and global coronary flow reserve (G-CFR) without the need for ionizing radiation, radioactive tracers, or intravascular catheterization. Although G-CFR impairment has been previously reported to be linked with endothelium dysfunction and subsequent atherosclerosis, the relationship between coronary inflammation and absolute coronary blood flow volume or coronary flow reserve remains elusive.
Purpose
We evaluated the association between G-CFR by quantifying CSF using PC-CMR and the extent of coronary inflammation in patients with ACS treated with emergent percutaneous coronary intervention (PCI).
Methods
The study enrolled 107 ACS patients who underwent uncomplicated emergent PCI within 48 hours of symptom onset and coronary CT angiography were performed before PCI. Proximal 40-mm segments of all three major epicardial coronary vessels were examined. Coronary inflammation was assessed by the CT fat attenuation index of perivascular adipose tissue (FAI−PVAT) defined as the mean attenuation of the perivascular adipose tissue (−190 to −30 Hounsfield units (HU)) in a layer of tissue within a radial distance from the outer coronary artery wall equal to the diameter of the vessel, as previously reported. CMR images were acquired to assess absolute CSF at rest and during maximum hyperemia within 30 days after emergent PCI and revascularization of non-culprit significant lesions. The patients were divided into 4 groups according to the number of inflamed vessels (defined as 0, 1, 2, 3 vessels with FAI ≥−70.1 HU).
Results
In the final analysis of 102 patients (mean age 64, Male 65 (63.7%)) including 77 patients with non-ST-segment elevation myocardial infarction (NSTEMI) (75.5%) and 25 patients with unstable angina pectoris (UAP), 25, 30, 26, 21 patients exhibited none, 1, 2, 3 inflamed vessels with FAI ≥−70.1 HU, respectively. Rest and maximal hyperemic CSF and corrected G-CFR were 1.17 [0.63, 1.71] vs 1.36 [1.05, 1.67] vs 1.21 [0.83, 1.94] vs 1.35 [0.96, 1.67] ml/min/g; P=0.61, 3.26 [2.62, 2.99] vs 3.50 [2.60, 4.03] vs 3.34 [1.78, 4.20] vs 2.48 [1.54, 3.43]; P=0.061, 2.95 [2.05, 4.30] vs 2.63 [1.80, 3.56] vs 2.15 [1.37, 2.91] vs 2.18 [1.46, 2.42]; P=0.018, respectively. G-CFR was significantly lower in group with increased number of inflamed vessels.
Conclusions
In ACS patients successfully revascularized within 48 hours of onset, G-CFR obtained by noninvasive PC-CMR significantly associated with the prevalence of inflamed vessels detected by coronary CT. Further large population study is warranted to test the hypothesis that the extent of coronary inflammation before coronary revascularization in patients with ACS might provide prognostic information.
Collapse
Affiliation(s)
- Y Kanaji
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - T Sugiyama
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - M Hoshino
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - H Hirano
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - T Horie
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - Y Kanno
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - H Ohya
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - Y Sumino
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - M Hada
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - M Yamaguchi
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - H Yuki
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - T Yonetsu
- Tokyo Medical and Dental University, Cardiovascular medicine, Tokyo, Japan
| | - T Kakuta
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| |
Collapse
|
78
|
Kanaji Y, Sugiyama T, Hoshino M, Hirano H, Yuki H, Horie T, Kanno Y, Ohya H, Sumino Y, Hada M, Yamaguchi M, Yonetsu T, Kakuta T. P5251Prognostic value of unrecognized myocardial infarction detected by cardiac magnetic resonance imaging in patients presenting with first acute myocardial infarction. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Unrecognized myocardial infarction (UMI) has been reported to be strongly associated with worse outcome in patients with cardiovascular disease. Cardiac magnetic resonance (CMR) imaging is a useful instrument for the assessment of pathological and functional conditions.
Purpose
This study sought to evaluate the prognostic value of the presence of unrecognized non-infarct-related late gadolinium enhancement (non-IR LGE) evaluated by cardiac magnetic resonance imaging in patients presenting with a first acute myocardial infarction (AMI).
Methods
We studied 311 AMI patients including 213 STEMI and 98 NSTEMI patients without the history of prior MI who underwent uncomplicated primary or emergent PCI within 48 hours of symptom onset between October, 2012 and June, 2017. CMR images were acquired at 28 [21, 32] days after primary/emergent PCI. UMI was defined as having LGE separately in the different and remote area from the perfused territory by infarct-related artery. In case of multiple LGE areas of infarction, the coronary angiography findings were used to support identification of the area corresponding to the culprit artery of AMI. The association of CMR variables and other clinical characteristics with major adverse cardiac events (cardiac death, nonfatal myocardial infarction, nonfatal stroke) were investigated.
Results
Forty-six patients (14.8%) showed UMI defined by the presence of non-IR LGE (27 STEMI and 19 NSTEMI). During the follow up for 830 [385, 1309] days, cardiovascular death occurred in 7 patients (2.3%), and non-fatal MI and non-fatal stroke occurred in 10 and 1 patients, respectively (3.2%, 0.3%, respectively). There was no significant difference in the prevalence of UMI and incidence of MACE between the patients with STEMI and NSTEMI (p=0.13, p=0.11, respectively). Event-free survival was significantly worse in patients with UMI (log-rank χ2=16.3, P=0.001) in a total cohort. Cox proportional hazards analysis showed that UMI was independent predictors of adverse cardiac events during follow-up in patients with first MI (hazard ratio, 7.60, 95% confidence interval, 2.78–20.8, p=0.0001).
Conclusions
In first AMI patients, UMI defined by non-IR LGE obtained by noninvasive CMR provides significant prognostic information. Early detection of UMI by CMR may help risk stratification of patients with AMI and support adjunctive aggressive patient management such as strong statin therapy and life style intervention.
Collapse
Affiliation(s)
- Y Kanaji
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - T Sugiyama
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - M Hoshino
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - H Hirano
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - H Yuki
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - T Horie
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - Y Kanno
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - H Ohya
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - Y Sumino
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - M Hada
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - M Yamaguchi
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - T Yonetsu
- Tokyo Medical and Dental University, Cardiovascular medicine, Tokyo, Japan
| | - T Kakuta
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| |
Collapse
|
79
|
Sugiyama T, Hoshino M, Kanaji Y, Horie T, Yuki H, Hirano H, Kanno Y, Hada M, Ohya H, Sumino Y, Yamaguchi M, Yonetsu T, Kakuta T. P6393Differences in coronary inflammation between the culprit and non-culprit vessels assessed by fat attenuation index on computed tomography in patients with acute coronary syndromes. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0989] [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
Inflammation is linked with progression of coronary atherosclerosis. Recent studies have reported the association between elevated perivascular fat attenuation index (FAI) on computed tomography (CT) and worse cardiac outcomes in patients with coronary artery disease.
Purpose
We aimed to investigate the differences in FAI-defined peri-coronary inflammation status between the culprit and non-culprit vessels in patients with acute coronary syndromes (ACS).
Methods
A total of 78 ACS patients with left anterior descending coronary arteries (LAD) as a culprit vessel who underwent coronary CT angiography and invasive coronary angiography were studied. Proximal 40-mm segments of the LAD and the right coronary artery (RCA) were traced. Coronary inflammation was assessed by the FAI defined as the mean CT attenuation value of perivascular adipose tissue (−190 to −30 Hounsfield units [HU]) in a layer of tissue within a radial distance from the outer coronary artery wall equal to the diameter of the vessel. All patients were divided into two groups according to the values of FAI in the LAD: high FAI group (FAI-LAD > median; n=39) and low FAI group (FAI-LAD ≤ median; n=39). Patient characteristics, angiographic and CT findings were compared between the two groups.
Results
In a total of 78 patients, median FAI in the LAD was −70.20 (interquartile range, −74.81 to −64.58) HU. High FAI group was associated with male sex and lower left ventricular ejection fraction compared with Low FAI group. Minimal lumen diameter, reference diameter, diameter stenosis, and lesion length on quantitative coronary angiography analysis and coronary artery calcium score on CT was not different between the groups. FAI in the RCA was also higher in High FAI group than that in Low FAI group (−67.64±8.31 vs. −76.47±6.25 HU, P<0.001). Paired t-test comparison demonstrated that culprit vessel showed higher FAI than the non-culprit vessel (−69.85±7.74 vs. −72.11±8.54 HU, P=0.013).
Conclusions
In ACS patients with culprit LAD lesions, FAI-defined peri-coronary inflammation status is higher in the culprit vessel than in the non-culprit vessel.
Collapse
Affiliation(s)
- T Sugiyama
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - M Hoshino
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - Y Kanaji
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - T Horie
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - H Yuki
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - H Hirano
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - Y Kanno
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - M Hada
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - H Ohya
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - Y Sumino
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - M Yamaguchi
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - T Yonetsu
- Tokyo Medical and Dental University, Tokyo, Japan
| | - T Kakuta
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| |
Collapse
|
80
|
Yamaguchi M, Tsujiguchi T, Kashiwakura I. COMPREHENSIVE EXPRESSION ANALYSIS OF MIRNAS IN MICE EXPOSED TO LETHAL RADIATION AND/OR RADIO-MITIGATIVE DRUG. Radiat Prot Dosimetry 2019; 184:482-485. [PMID: 31038713 DOI: 10.1093/rpd/ncz113] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
New minimally invasive indicators that are capable of predicting the biological effects and radiation damage to various organs and systems are urgently needed for the development of optimal treatment protocols for victims of radiation accidents. In the present study, we focused on microRNA (miRNA) that have recently emerged as biomarkers for predicting and diagnosing various pathological conditions and identified the serum miRNA signatures. All of the mice treated with lethal radiation alone strongly expressed certain serum miRNAs detectable for 24 h after radiation exposure, whereas the administration of radio-mitigative drug immediately after irradiation suppressed these miRNA expressions to the same levels as in control mice. These results suggest that serum miRNAs may reflect the degree of radiation damage and can be used to predict the radiation-mitigative information in victims of accidental radiation exposure.
Collapse
Affiliation(s)
- M Yamaguchi
- Hirosaki University Graduate School of Health Sciences, 66-1 Hon-cho, Hirosaki, Aomori, Japan
| | - T Tsujiguchi
- Hirosaki University Graduate School of Health Sciences, 66-1 Hon-cho, Hirosaki, Aomori, Japan
| | - I Kashiwakura
- Hirosaki University Graduate School of Health Sciences, 66-1 Hon-cho, Hirosaki, Aomori, Japan
| |
Collapse
|
81
|
Kanaji Y, Sugiyama T, Hoshino M, Hirano H, Horie T, Yuki H, Kanno Y, Ohya H, Sumino Y, Hada M, Yamaguchi M, Yonetsu T, Kakuta T. P3585Prognostic value of the assessment of coronary sinus flow by phase contrast cine-magnetic resonance imaging in patients with acute coronary syndrome. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Phase contrast cine-magnetic resonance imaging (PC-CMR) of the coronary sinus (CS) is a promising approach for quantifying global coronary sinus flow (CSF) and global coronary flow reserve (G-CFR) without the need for ionizing radiation, radioactive tracers, or intravascular catheterization.
Purpose
We evaluated the prognostic value of G-CFR by quantifying CSF using PC-CMR in patients with ACS treated with primary or emergent percutaneous coronary intervention (PCI).
Methods
The study prospectively enrolled 387 ACS patients who underwent uncomplicated primary or emergent PCI within 48 hours of symptom onset. Breath-hold PC-CMR images of CS were acquired to assess absolute CSF at rest and during maximum hyperemia within 30 days after primary PCI and revascularization of functionally significant non-culprit lesions of ACS. The association of G-CFR and baseline clinical characteristics with major adverse cardiac events (cardiac death, nonfatal myocardial infarction, late revascularization, or hospitalization for congestive heart failure) was investigated.
Results
In the final analysis of 366 patients (Male 294 (80.3%), mean age 65) including 233 patients (63.7%) with ST-segment elevation myocardial infarction (STEMI) and 133 patients (36.3%) with non-ST-segment elevation acute coronary syndrome (NSTE-ACS), rest and maximal hyperemic CSF and corrected G-CFR were 1.24 [0.83, 1.71] ml/min/g, 2.56 [1.87, 3.66] ml/min/g, and 2.20 [1.53, 3.17], respectively. During a median follow-up of 16 months, MACE occurred in 84 patients (cardiac death: 9, nonfatal myocardial infarction: 11, late revascularization: 59, hospitalization for congestive heart failure: 5). Cardiac event-free survival was significantly worse in patients with a corrected G-CFR <2.00 (log-rank χ2=20.2, P<0.001). Cox proportional hazards analysis showed that corrected G-CFR were independent predictors of adverse cardiac events during follow-up in patients with STEMI (hazard ratio, 0.66, 95% confidence interval, 0.51–0.85, p=0.001) and NSTE-ACS (hazard ratio, 0.64, 95% confidence interval, 0.43–0.95, p=0.026), respectively.
Conclusions
In ACS patients successfully revascularized within 48 hours of onset, G-CFR obtained by noninvasive PC-CMR provided significant prognostic information independent of infarction size and conventional risk scores.
Collapse
Affiliation(s)
- Y Kanaji
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - T Sugiyama
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - M Hoshino
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - H Hirano
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - T Horie
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - H Yuki
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - Y Kanno
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - H Ohya
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - Y Sumino
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - M Hada
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - M Yamaguchi
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| | - T Yonetsu
- Tokyo Medical and Dental University, Cardiovascular medicine, Tokyo, Japan
| | - T Kakuta
- Tsuchiura Kyodo General Hospital, Tsuchiura, Japan
| |
Collapse
|
82
|
Matsunaga H, Machida Y, Nakagawa M, Yamaguchi M, Ogawara Y, Shima Y, Yamagata K, Katsumoto T, Hattori A, Itoh M, Seki T, Nishiya Y, Nakamura K, Suzuki K, Imaoka T, Suzuki M, Sampetrean O, Saya H, Ichimura K, Kitabayashi I. Characterization of a novel BBB-permeable mutant IDH1 inhibitor, DS-1001b. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz243.006] [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: 11/15/2022] Open
|
83
|
Yamanouchi K, Tsujiguchi T, Shiroma Y, Suzuki T, Tamakuma Y, Yamaguchi M, Sakamoto Y, Hegedűs M, Iwaoka K, Hosoda M, Kashiwakura I, Miura T, Tokonami S. COMPARISON OF BACTERIAL FLORA IN RIVER SEDIMENTS FROM FUKUSHIMA AND AOMORI PREFECTURES BY 16S RDNA SEQUENCE ANALYSIS. Radiat Prot Dosimetry 2019; 184:504-509. [PMID: 31038686 DOI: 10.1093/rpd/ncz114] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Monitoring of radioactive materials has been reported in rivers and soil in Fukushima post the Fukushima Daiichi Nuclear Power Plant accident in March 2011. However, there are few reports on the influence of this event on bacteria in forest soils and rivers. Therefore, through amplicon sequencing of 16S rDNA we compared the bacterial flora in river sediment soils from Fukushima prefecture and from an area not exposed to radioactive contamination, Aomori prefecture. The bacterial composition in the Aomori prefecture soil and Fukushima soil were found to be very similar at the phylum level. However, Fukushima soil had significantly fewer Bacteroidetes than the Aomori soil (p = 0.014), while the content of Firmicutes and Latescibacteria (WS3) was significantly higher (p = 0.001, 0.013 respectively). However, no increase in the content of radioactive-resistant bacteria was observed. In future studies, it is necessary to standardise the conditions for soil collection to assess its content of radioactive substances.
Collapse
Affiliation(s)
- K Yamanouchi
- Hirosaki University Graduate School of Health Sciences, Hirosaki, Japan
| | - T Tsujiguchi
- Hirosaki University Graduate School of Health Sciences, Hirosaki, Japan
| | - Y Shiroma
- Hirosaki University Graduate School of Health Sciences, Hirosaki, Japan
| | - T Suzuki
- Hirosaki University Graduate School of Health Sciences, Hirosaki, Japan
| | - Y Tamakuma
- Hirosaki University Graduate School of Health Sciences, Hirosaki, Japan
| | - M Yamaguchi
- Hirosaki University Graduate School of Health Sciences, Hirosaki, Japan
| | - Y Sakamoto
- Hirosaki University Graduate School of Health Sciences, Hirosaki, Japan
| | - M Hegedűs
- Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki, Japan
| | - K Iwaoka
- Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki, Japan
- National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - M Hosoda
- Hirosaki University Graduate School of Health Sciences, Hirosaki, Japan
| | - I Kashiwakura
- Hirosaki University Graduate School of Health Sciences, Hirosaki, Japan
| | - T Miura
- Hirosaki University Graduate School of Health Sciences, Hirosaki, Japan
| | - S Tokonami
- Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki, Japan
| |
Collapse
|
84
|
Sawato T, Yuzawa R, Kobayashi H, Saito N, Yamaguchi M. Formation and dissociation of synthetic hetero-double-helix complex in aqueous solutions: significant effect of water content on dynamics of structural change. RSC Adv 2019; 9:29456-29462. [PMID: 35528401 PMCID: PMC9071914 DOI: 10.1039/c9ra06073a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 09/08/2019] [Indexed: 11/21/2022] Open
Abstract
A 1 : 1 mixture of the ethynylhelicene pseudoenantiomers (M)-tetramer and (P)-pentamer, which possess hydrophilic terminal tri(ethyleneglycol) (TEG) groups, changes their structures in the water-THF (10 μM) solvent system between dissociated random-coils and an associated hetero-double-helix upon heating and cooling. A small change in water content between 30 and 33% significantly affects the dynamics of structural changes. At 30% water content, heating to 60 °C causes rapid formation of random-coil and cooling to 10 °C causes the rapid formation of hetero-double-helix, accompanied by repeated changes in Δε at 369 nm between 0 and -2000 cm-1 M-1. Heating and cooling experiments at constant rates between 60 and 10 °C resulted in sigmoidal curves in Δε/temperature profiles, which indicate rapid structural changes. Different phenomena occurred at 33% water content. Heating to 60 °C and cooling to 0 °C initially induced changes in Δε between 0 and -2000 cm-1 M-1, and repeated cycles gradually reduced the range between 0 and -500 cm-1 M-1. Heating and cooling experiments at constant rates between 60 and 10 °C caused small changes in Δε, and repeated cycles at 10 °C gradually increased Δε to -500 cm-1 M-1. These phenomena involved rapid changes in molecular structure and slow structural changes in the water-THF solvent system. The sharp switching of the dynamics of structural changes at water content between 30 and 33% indicated discontinuous structural changes in the hydration of TEG and/or in water clusters in the vicinity of oligomer molecules.
Collapse
Affiliation(s)
- Tsukasa Sawato
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University Aoba Sendai 980-8578 Japan +81-22-795-6811
| | - Ryosuke Yuzawa
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University Aoba Sendai 980-8578 Japan +81-22-795-6811
| | - Higashi Kobayashi
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University Aoba Sendai 980-8578 Japan +81-22-795-6811
| | - Nozomi Saito
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University Aoba Sendai 980-8578 Japan +81-22-795-6811
| | - Masahiko Yamaguchi
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University Aoba Sendai 980-8578 Japan +81-22-795-6811
| |
Collapse
|
85
|
Sakamoto K, Sakatoku K, Sugimoto S, Iwasaki N, Sano Y, Yamaguchi M, Kurokawa J. Continued exposure of anti-cancer drugs to human iPS cell-derived cardiomyocytes can unmask their cardiotoxic effects. J Pharmacol Sci 2019; 140:345-349. [PMID: 31521491 DOI: 10.1016/j.jphs.2019.08.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 07/12/2019] [Revised: 08/16/2019] [Accepted: 08/21/2019] [Indexed: 11/18/2022] Open
Abstract
Although the cardiotoxicity of anti-cancer drugs is an important issue, the underlying mechanisms remain unknown. To develop a sensitive assay system for cardiotoxicity, we examined effects of anti-cancer drugs on contractile functions of human iPS cell-derived cardiomyocytes by using non-invasive motion field imaging analysis with extended drug exposure time. We succeeded in continuously measuring stable contractile function. The continued exposure revealed that the difference in cardiotoxicity between cardiotoxic doxorubicin and less toxic erlotinib was more evident after 8 days of treatment than with 3 days of treatment, suggesting that continued exposure improved the predictive power for cardiotoxicity of anti-cancer drugs.
Collapse
Affiliation(s)
- Kazuho Sakamoto
- Department of Bio-Informational Pharmacology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka 422-8526, Japan
| | - Kohei Sakatoku
- Department of Bio-Informational Pharmacology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka 422-8526, Japan
| | - Shintaro Sugimoto
- Department of Bio-Informational Pharmacology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka 422-8526, Japan
| | - Nanami Iwasaki
- Department of Bio-Informational Pharmacology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka 422-8526, Japan
| | - Yusuke Sano
- Department of Bio-Informational Pharmacology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka 422-8526, Japan
| | - Masahiko Yamaguchi
- Department of Bio-Informational Pharmacology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka 422-8526, Japan
| | - Junko Kurokawa
- Department of Bio-Informational Pharmacology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka 422-8526, Japan.
| |
Collapse
|
86
|
Abstract
Sulfur is one of the few elements that occurs uncombined in nature. Sulfur atoms are found in natural amino acids and vitamins. In the chemical industry, organosulfur compounds are used for fabricating rubber, fibers, and dyes, pharmaceuticals, and pesticides. Although sulfur, which is cheap and easy to handle, is a useful source of sulfur atom in functional organosulfur compounds, it is rarely used in organic synthesis. Activation of sulfur by high temperature, light irradiation, treatment with nucleophiles and electrophiles, and redox conditions often results in the formation of various active sulfur species, which complicate reactions. The development of a method that mildly activates sulfur is therefore desired. The use of transition-metal catalysts is a new method of activating sulfur under mild conditions, and, in this article, we describe the rhodium-catalyzed synthesis of various organosulfur compounds by the insertion of sulfur atoms into single bonds and by the addition of sulfur to unsaturated bond in various organic compounds.1 Introduction2 Sulfur Activation without using Transition Metal3 Transition-Metal-Catalyzed Activation of Sulfur4 Rhodium-Catalyzed Reactions using Sulfur4.1 Rhodium-Catalyzed Sulfur Atom Exchange Reactions using Sulfur4.2 Synthesis of Diaryl Sulfides using Rhodium-Catalyzed Exchange Reaction of Aryl Fluorides and Sulfur/Organopolysulfides4.3 Rhodium-Catalyzed Synthesis of Isothiocyanate using Sulfur4.4 Rhodium-Catalyzed Sulfur Addition Reaction to Alkenes for Thiiranes Synthesis4.5 Rhodium-Catalyzed Sulfur Addition Reaction to Alkynes for 1,4-Dithiins Synthesis5 Conclusion
Collapse
Affiliation(s)
- Mieko Arisawa
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University
| | - Masahiko Yamaguchi
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University
| |
Collapse
|
87
|
Miyazaki K, Takeuchi T, Yamaguchi M, Asano N, Sawaki A, Imai H, Ono R, Nosaka T, Kobayashi K, Tanaka K, Katayama N. GENE MUTATIONS AND SITES OF INVOLVEMENT IN DUODENAL-TYPE FOLLICULAR LYMPHOMA. Hematol Oncol 2019. [DOI: 10.1002/hon.2_2631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- K. Miyazaki
- Department of Hematology and Oncology; Mie University Graduate School of Medicine; Tsu Japan
| | - T. Takeuchi
- Department of Hematology and Oncology; Mie University Graduate School of Medicine; Tsu Japan
| | - M. Yamaguchi
- Department of Hematology and Oncology; Mie University Graduate School of Medicine; Tsu Japan
| | - N. Asano
- Department of Molecular Diagnostics; Shinshu Medical Center; Suzaka Japan
| | - A. Sawaki
- Department of Hematology and Oncology; Mie University Graduate School of Medicine; Tsu Japan
| | - H. Imai
- Pathology Division; Mie University Hospital; Tsu Japan
| | - R. Ono
- Department of Microbiology and Molecular Genetics; Mie University Graduate School of Medicine; Tsu Japan
| | - T. Nosaka
- Department of Microbiology and Molecular Genetics; Mie University Graduate School of Medicine; Tsu Japan
| | - K. Kobayashi
- Gastroenterology; Matsusaka Chuo General Hospital; Matsusaka Japan
| | - K. Tanaka
- Department of Endoscopy; Mie University Hospital; Tsu Japan
| | - N. Katayama
- Department of Hematology and Oncology; Mie University Graduate School of Medicine; Tsu Japan
| |
Collapse
|
88
|
Yamaguchi M, Suzuki R, Oguchi M, Miyazaki K, Taguchi S, Amaki J, Maeda T, Kubota N, Maruyama D, Terui Y, Sekiguchi N, Takizawa J, Tsukamoto H, Murayama T, Ando T, Matsuoka H, Hasegawa M, Wada H, Sakai R, Kameoka Y, Tsukamoto N, Choi I, Masaki Y, Shimada K, Fukuhara N, Utsumi T, Uoshima N, Kagami Y, Asano N, Katayama N. CLINICAL OUTCOMES AND DIAGNOSIS-TO-TREATMENT INTERVAL IN PATIENTS WITH NK/T-CELL LYMPHOMA: 7-YEAR FOLLOW-UP OF THE NKEA STUDY. Hematol Oncol 2019. [DOI: 10.1002/hon.86_2630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- M. Yamaguchi
- Department of Hematology and Oncology; Mie University Graduate School of Medicine; Tsu Japan
| | - R. Suzuki
- Oncology and Hematology; Shimane University Hospital; Izumo Japan
| | - M. Oguchi
- Radiation Oncology; Cancer Institute Hospital of Japanese Foundation for Cancer Research; Tokyo Japan
| | - K. Miyazaki
- Department of Hematology and Oncology; Mie University Graduate School of Medicine; Tsu Japan
| | - S. Taguchi
- Radiation Oncology; Cancer Institute Hospital of Japanese Foundation for Cancer Research; Tokyo Japan
| | - J. Amaki
- Hematology and Oncology; Tokai University School of Medicine; Kanagawa Japan
| | - T. Maeda
- Hematology; Kurashiki Central Hospital; Kurashiki Japan
| | - N. Kubota
- Hematology; Saitama Cancer Center; Ina Japan
| | - D. Maruyama
- Hematology; National Cancer Center Hospital; Tokyo Japan
| | - Y. Terui
- Hematology Oncology; Cancer Institute Hospital of Japanese Foundation for Cancer Research; Tokyo Japan
| | - N. Sekiguchi
- Comprehensive Cancer Therapy; Shinshu University School of Medicine; Matsumoto Japan
| | - J. Takizawa
- Hematology; Endocrinology and Metabolism, Niigata University Faculty of Medicine; Niigata Japan
| | - H. Tsukamoto
- Hematology; Showa University School of Medicine; Tokyo Japan
| | - T. Murayama
- Hematology; Hyogo Cancer Center; Akashi Japan
| | - T. Ando
- Hematology; Respiratory Medicine and Oncology, Saga University; Saga Japan
| | - H. Matsuoka
- Medical Oncology/Hematology; Kobe University; Kobe Japan
| | - M. Hasegawa
- Radiation Oncology; Nara Medical University; Kashihara Japan
| | - H. Wada
- Hematology; Kawasaki Medical School; Kurashiki Japan
| | - R. Sakai
- Medical Oncology; Kanagawa Cancer Center; Yokohama Japan
| | - Y. Kameoka
- Hematology; Nephrology and Rheumatology, Akita University; Akita Japan
| | - N. Tsukamoto
- Oncology Center; Gunma University Hospital; Maebashi Japan
| | - I. Choi
- Hematology; National Hospital Organization Kyushu Cancer Center; Fukuoka Japan
| | - Y. Masaki
- Hematology and Immunology; Kanazawa Medical University; Kanazawa Japan
| | - K. Shimada
- Hematology and Oncology; Nagoya University School of Medicine; Nagoya Japan
| | - N. Fukuhara
- Hematology & Rheumatology; Tohoku University School of Medicine; Sendai Japan
| | - T. Utsumi
- Hematology; Shiga Medical Center for Adults; Moriyama Japan
| | - N. Uoshima
- Hematology; Japanese Red Cross Kyoto Daini Hospital; Kyoto Japan
| | - Y. Kagami
- Hematology; Toyota Kosei Hospital; Toyota Japan
| | - N. Asano
- Molecular Diagnostics; Shinshu Medical Center; Suzaka Japan
| | - N. Katayama
- Department of Hematology and Oncology; Mie University Graduate School of Medicine; Tsu Japan
| |
Collapse
|
89
|
Yamaguchi M, Shiraishi A. Relationship Between Eyelid Pressure and Ocular Surface Disorders in Patients With Healthy and Dry Eyes. Invest Ophthalmol Vis Sci 2019; 59:DES56-DES63. [PMID: 30481807 DOI: 10.1167/iovs.17-23586] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Purpose To determine whether an eyelid pressure measurement device, called a blepharo-tensiometer, can detect changes in the eyelid pressure in different types of ocular surface disorders. Methods First, the repeatability of the blepharo-tensiometer was determined by measuring the eyelid pressures on 3 separate days from healthy volunteers and calculating the intraclass correlation coefficients (ICCs). Second, to determine the ability of the blepharo-tensiometer to detect changes in the eyelid pressures in different types of ocular surface disorders, we compared the eyelid pressure of healthy eyes with dry eyes. Third, the correlations between the eyelid pressure and the location and magnitude of fluorescein staining of the ocular surface were analyzed. Fourth, the eyelid pressure in eyes with lid-wiper epitheliopathy (LWE) was measured. Results The ICCs ranged from 0.675 to 0.911 for the upper eyelid and 0.663 to 0.925 for the lower eyelid. The pressures of the upper and lower eyelids were significantly higher in dry eyes than in healthy eyes. The inferior ocular surface staining scores were strongly correlated with the lower eyelid pressure by multivariate analysis. The lower eyelid pressure was significantly correlated with the grade of the lower LWE. Conclusions The blepahro-tensiometer can obtain repeatable measurements of the eyelid pressure and can be used to evaluate the pressure of the eyelids on the ocular surface in healthy and diseased eyes. The significant correlations between the eyelid pressure and the ocular surface staining suggests that the pressure on the ocular surface probably contributes to ocular surface disorders.
Collapse
Affiliation(s)
- Masahiko Yamaguchi
- Department of Ophthalmology, Ehime Prefectural Central Hospital, Kasuga-cho, Matsuyama, Ehime, Japan.,Department of Ophthalmology, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, Japan
| | - Atsushi Shiraishi
- Department of Ophthalmology, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, Japan
| |
Collapse
|
90
|
Saito N, Kobayashi H, Kanie K, Yamaguchi M. Long-Range Anisotropic Structural Films and Fibers Formed from Lyotropic Liquid Crystal Gels Containing Hetero-Double-Helices with C 16 Terminal Groups. Langmuir 2019; 35:5075-5080. [PMID: 29488769 DOI: 10.1021/acs.langmuir.7b04385] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Long-range anisotropic structural materials exhibit notable optical and mechanical properties, and an efficient method for synthesizing such materials involving self-assembly of well-defined monodispersed organic molecules is described here. Hetero-double-helices are formed in toluene using a pseudoenantiomeric mixture of an ethynylhelicene ( M)-tetramer with C16 terminal groups and a ( P)-pentamer. When the concentration of the mixture was increased, the hetero-double-helices self-assembled to form lyotropic liquid crystal gels. On evaporating the solvent by drop casting, a long-range anisotropic structural film with a single domain and a size of up to centimeter order was spontaneously formed. Kinetics analysis of the film formation indicated the generation of perpendicularly aligned liquid crystal domains at the interface of the liquid and solid phases. When the lyotropic liquid crystal gel was extruded into methanol, a long-range anisotropic structural fiber with a single domain was formed. Different shapes of long-range anisotropic structural materials were obtained by different mechanical treatments of lyotropic liquid crystal gels.
Collapse
Affiliation(s)
- Nozomi Saito
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences , Tohoku University , Aoba, Sendai 980-8578 , Japan
| | - Higashi Kobayashi
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences , Tohoku University , Aoba, Sendai 980-8578 , Japan
| | - Kiyoshi Kanie
- Institute of Multidisciplinary Research for Advanced Materials , Tohoku University , Aoba, Sendai 980-8577 , Japan
| | - Masahiko Yamaguchi
- Institute of Multidisciplinary Research for Advanced Materials , Tohoku University , Aoba, Sendai 980-8577 , Japan
| |
Collapse
|
91
|
Sawato T, Saito N, Yamaguchi M. Chemical Systems Involving Two Competitive Self-Catalytic Reactions. ACS Omega 2019; 4:5879-5899. [PMID: 31459737 PMCID: PMC6648109 DOI: 10.1021/acsomega.9b00133] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 03/13/2019] [Indexed: 06/10/2023]
Abstract
Self-catalytic reactions are chemical phenomena, in which a product catalyzes the reactions of substrates further to yield products. A significant amplification of product concentration occurs during the reactions in a dilute solution, which exhibit notable properties such as sigmoidal kinetics, seeding effects, and thermal hysteresis. Chemical systems involving two competitive self-catalytic reactions can be considered, in which the competitive formation of two products occurs, which is affected by environmental changes, subtle perturbations, and fluctuations, and notable chemical phenomena appear such as formation of different structures in response to slow/fast temperature changes, chiral symmetry breaking, shortcut in reaction time, homogeneous-heterogeneous transitions, and mechanical responses. Studies on such chemical systems provide understanding on biological systems and can also be extended to the development of novel functional materials.
Collapse
|
92
|
Anetai H, Takeda T, Hoshino N, Kobayashi H, Saito N, Shigeno M, Yamaguchi M, Akutagawa T. Ferroelectric Alkylamide-Substituted Helicene Derivative with Two-Dimensional Hydrogen-Bonding Lamellar Phase. J Am Chem Soc 2019; 141:2391-2397. [DOI: 10.1021/jacs.8b11222] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hayato Anetai
- Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
| | - Takashi Takeda
- Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
| | - Norihisa Hoshino
- Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
| | - Higashi Kobayashi
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Nozomi Saito
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Masanori Shigeno
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Masahiko Yamaguchi
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Tomoyuki Akutagawa
- Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
| |
Collapse
|
93
|
Sawato T, Saito N, Yamaguchi M. Proximate stochastic chiral symmetry breaking is mechanically tunable: formation of enantiomeric hetero-double-helices and aggregates from racemic oxymethylenehelicene oligomers. Phys Chem Chem Phys 2019; 21:25406-25414. [DOI: 10.1039/c9cp04299g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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
A mixture of oxymethylenehelicene (P)-hexamer and (M)-hexamer in solution exhibited chiral symmetry breaking, which was induced by mechanical stirring, during the formation of enantiomeric hetero-double-helices and their aggregates.
Collapse
Affiliation(s)
- Tsukasa Sawato
- Department of Organic Chemistry
- Graduate School of Pharmaceutical Sciences
- Tohoku University
- Sendai 980-8578
- Japan
| | - Nozomi Saito
- Department of Organic Chemistry
- Graduate School of Pharmaceutical Sciences
- Tohoku University
- Sendai 980-8578
- Japan
| | - Masahiko Yamaguchi
- Department of Organic Chemistry
- Graduate School of Pharmaceutical Sciences
- Tohoku University
- Sendai 980-8578
- Japan
| |
Collapse
|
94
|
Yamaguchi M, Takayama M, López H, Dochi O. 11 Conception rate of high-producing dairy cows at first service using prostaglandin F2α and oestradiol benzoate. Reprod Fertil Dev 2019. [DOI: 10.1071/rdv31n1ab11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
We have shown that a simplified oestrus synchronization protocol using prostaglandin F2α (PG) and oestradiol benzoate (EB) resulted in a satisfactory conception rate, similar to that obtained in high-producing dairy cows with natural oestrus (Yamaguchi et al. 2018 Reprod. Fertil. Dev. 30, 147 abstr). However, we found no significant effect of PG+EB protocols on the first-service conception rates (CR) of dairy cows. This study investigated the effect of the first-service CR by using PG+EB protocols in the high-producing dairy cows that had not exhibited oestrus expression after calving. Data concerning the first-service CR were obtained for 481 Holstein cows from 4 commercial dairy herds in Hokkaido and Ibaraki, Japan, from 2014 to 2017. The average number of parity, average interval between calving and the first service, and average milk yield (at 305 days) of the cows were 2.2±1.3, 89.7±26.1 days, and 10314±1994kg, respectively. We carried out the PG+EB protocols on cows not showing evident standing heat from Days 50 to 150 postpartum regardless of the presence of a corpus luteum in the ovary. The statuses of ovaries of cows were confirmed using ultrasonography before starting the treatment. Prostaglandin F2α (25 mg; Lutalyse, Pfizer, New York, NY, USA) was injected into cows with a >20mm cutoff for functional corpus luteum diameter at a random stage of oestrus, and EB (1 mg; Ovahormon®, Aska Animal Health Co., Tokyo, Japan) was injected 24h later, and AI was carried out 24 to 48h after EB injection. Cows with a natural oestrus service from Days 50 to 150 postpartum were used as control. All the cows were inseminated after the onset of standing heat or removal of the tail chalk. Pregnancy diagnoses were performed using ultrasonography 30 to 45 days after AI. The CR and intervals of partum to conception were analysed using a chi-square test and ANOVA. The first-service CR (i.e. the number of pregnant cows/total number of cows in the treatment group) of the natural oestrus (n=330) and PG+EB (n=151) groups were 42.7 and 41.1%, respectively, and there were no significant differences between these 2 groups (P=0.7). The average interval between calving and the first service of the PG+EB groups was significantly longer than that of the natural oestrus groups (86.4±1.5 days v. 96.9±1.9 days; P<0.01). The average days open of the natural oestrus and PG+EB groups were 88.5±3.2 days and 98.1±2.3 days, respectively (P<0.05). These results confirmed that the first-service CR in the PG+EB and natural oestrus groups of high-producing dairy cows were similar. We suggest that conducting PG+EB protocols was effective in the high-producing dairy cows that had not exhibited oestrus expression after calving. Moreover, using PG+EB protocols could prevent the further increase in the number of days open.
Collapse
|
95
|
Sawato T, Shinozaki Y, Saito N, Yamaguchi M. Chemical CD oscillation and chemical resonance phenomena in a competitive self-catalytic reaction system: a single temperature oscillation induces CD oscillations twice. Chem Sci 2018; 10:1735-1740. [PMID: 30842838 PMCID: PMC6368240 DOI: 10.1039/c8sc03109f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [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: 07/13/2018] [Accepted: 11/29/2018] [Indexed: 11/21/2022] Open
Abstract
Chemical CD oscillation and chemical resonance phenomena appear in a competitive chemical reaction system involving amplification. A pseudoenantiomeric mixture of an aminomethylenehelicene (P)-tetramer and an (M)-hexamer in toluene forms three states, namely hetero-double-helix B, hetero-double-helix C, and dissociated random-coil 2A. When the temperature of the solution is oscillated between -5 and 38 °C at a rate of 2 K min-1, Δε reaches maxima twice during a single temperature oscillation, which is called a chemical CD oscillation phenomenon. The phenomenon arises from the sharp competition between the two self-catalytic 2A + C-to-2C and 2A + B-to-2B reactions. In addition, the chemical CD oscillation appears, when temperature oscillation occurs at a rate of 2 K min-1, and higher and lower rates provide a single maximum, a process referred to as the chemical resonance phenomenon. The changes in concentration induced by temperature oscillation repeatedly crossed equilibrium.
Collapse
Affiliation(s)
- Tsukasa Sawato
- Department of Organic Chemistry , Graduate School of Pharmaceutical Sciences , Tohoku University , Aoba , Sendai 980-8578 , Japan .
| | - Yasuhiro Shinozaki
- Department of Organic Chemistry , Graduate School of Pharmaceutical Sciences , Tohoku University , Aoba , Sendai 980-8578 , Japan .
| | - Nozomi Saito
- Department of Organic Chemistry , Graduate School of Pharmaceutical Sciences , Tohoku University , Aoba , Sendai 980-8578 , Japan .
| | - Masahiko Yamaguchi
- Department of Organic Chemistry , Graduate School of Pharmaceutical Sciences , Tohoku University , Aoba , Sendai 980-8578 , Japan .
| |
Collapse
|
96
|
Yamaguchi M. SUPPORTING CARERS OF COMMUNITY-DWELLING FRAIL OLDER ADULTS: HIDDEN AGENDA IN LONG-TERM CARE SYSTEM IN JAPAN. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- M Yamaguchi
- Japan Lutheran College, Mitaka, Tokyo, Japan
| |
Collapse
|
97
|
Makihara R, Narita S, Yamamoto N, Sato J, Murakami S, Goto Y, Kanda S, Fujiwara Y, Horinouchi H, Tsukamoto T, Hashimoto H, Makino Y, Ohe Y, Yamaguchi M. Relationships between lenvatinib plasma concentration and toxicity in Japanese cancer patients. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy430.001] [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: 11/13/2022] Open
|
98
|
Yasuno S, Miyoshi Y, Asano N, Okita T, Yamaguchi M, Shimomura N, Kashiwagi K, Shimomura Y. Sporadic case of Darier disease caused by a novel splice-site mutation in the ATP2A2 gene. Clin Exp Dermatol 2018; 44:e10-e12. [PMID: 30294936 DOI: 10.1111/ced.13806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/19/2018] [Indexed: 11/29/2022]
Affiliation(s)
- S Yasuno
- Department of Dermatology, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - Y Miyoshi
- Department of Dermatology, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - N Asano
- Department of Dermatology, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - T Okita
- Department of Dermatology, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - M Yamaguchi
- Department of Dermatology, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - N Shimomura
- Department of Dermatology, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - K Kashiwagi
- Department of Dermatology, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - Y Shimomura
- Department of Dermatology, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| |
Collapse
|
99
|
Nosaki K, Umeyama Y, Toyozawa R, Takamori S, Haratake N, Miura N, Oba T, Yamaguchi M, Seto T, Takenoyama M, Ichinose Y. P3.01-76 Clinical Background and Response to Chemotherapy in NSCLC Patients with MET Exon14 Skipping Mutation or High MET Gene Copy Number. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1636] [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]
|
100
|
Arisawa M, Sawahata K, Ichikawa T, Yamaguchi M. Rhodium-Catalyzed Isomerization and Alkyne Exchange Reactions of 1,4-Dithiins via the 1,2-Ethenedithiolato Rhodium Complex. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00498] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mieko Arisawa
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Sendai 980-8578, Japan
| | - Kyosuke Sawahata
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Sendai 980-8578, Japan
| | - Takuya Ichikawa
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Sendai 980-8578, Japan
| | - Masahiko Yamaguchi
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Sendai 980-8578, Japan
| |
Collapse
|