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Oshikiri Y, Ishida M, Sakamoto R, Kimura T, Shimoda Y, Koeda Y, Shimada R, Itoh T, Morino Y. Evaluation of the thickness of coronary calcium by 60-MHz intravascular ultrasound: head-to-head comparison with optical frequency domain imaging. Int J Cardiovasc Imaging 2023; 39:2599-2607. [PMID: 37776384 DOI: 10.1007/s10554-023-02955-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 09/10/2023] [Indexed: 10/02/2023]
Abstract
The region behind the coronary calcium could not be visualized by intravascular ultrasound (IVUS) because of acoustic shadow. However, some pathological studies have shown that IVUS delineated the vessel border behind thin coronary calcium sheets. This study aimed to reveal whether recent IVUS can visualize the region behind thin coronary calcium sheets. Using 534 cross-sectional optical frequency domain images (OFDI), including severe calcified coronary lesions, calcium sheet thickness was measured by every 1°. Accordingly, the visibility of the vessel border behind the coronary calcium sheet was evaluated using 60-MHz IVUS images, which were longitudinally linked with OFDI ones. After carefully coordinating with the axial position, the association between the IVUS-derived permeability of the coronary calcium sheet and calcium thickness was evaluated. The maximum and mean calcium thickness by OFDI was 0.88 ± 0.39 and 0.62 ± 0.30 mm, respectively. By 60-MHz IVUS, 12.1% of the coronary calcium sheets had permeable segments. Comparing between OFDI and IVUS images, 48.6% of the coronary calcium sheets with maximum thickness ≤ 0.3 mm were sometimes permeable by 60-MHz IVUS, whereas most > 0.5 mm thick calcium sheets were impermeable. In the receiver operating characteristic curve analysis, the best cutoff values for the maximum and mean thickness of permeable calcium were 0.48 and 0.31 mm, respectively. Thus, 60-MHz IVUS can occasionally visualize the region behind a thin coronary calcium sheet. When using 60-MHz IVUS, this finding may be a predictive marker of calcium sheet with a thickness of < 0.5 mm.
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Affiliation(s)
- Yuya Oshikiri
- Department of Internal Medicine, Division of Cardiology, Iwate Medical University, Yahaba-cho, Japan
- Department of Cardiology, Iwate Prefectural Ofunato Hospital, Ofunato, Japan
| | - Masaru Ishida
- Department of Internal Medicine, Division of Cardiology, Iwate Medical University, Yahaba-cho, Japan.
| | - Ryohei Sakamoto
- Department of Cardiology, Nakadori General Hospital, Akita, Japan
| | - Takumi Kimura
- Department of Internal Medicine, Division of Cardiology, Iwate Medical University, Yahaba-cho, Japan
| | - Yudai Shimoda
- Department of Internal Medicine, Division of Cardiology, Iwate Medical University, Yahaba-cho, Japan
| | - Yorihiko Koeda
- Department of Internal Medicine, Division of Cardiology, Iwate Medical University, Yahaba-cho, Japan
| | - Ryutaro Shimada
- Department of Internal Medicine, Division of Cardiology, Iwate Medical University, Yahaba-cho, Japan
- Department of Cardiology, Iwate Prefectural Ofunato Hospital, Ofunato, Japan
| | - Tomonori Itoh
- Department of Internal Medicine, Division of Cardiology, Iwate Medical University, Yahaba-cho, Japan
| | - Yoshihiro Morino
- Department of Internal Medicine, Division of Cardiology, Iwate Medical University, Yahaba-cho, Japan
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Itoh T, Kobayashi T, Oshikiri Y, Arakawa Y, Satoh M, Morino Y. Clinical and electrocardiographic characteristics in patients with fulminant myocarditis. J Arrhythm 2022; 38:763-771. [PMID: 36237853 PMCID: PMC9535750 DOI: 10.1002/joa3.12751] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 06/08/2022] [Accepted: 06/23/2022] [Indexed: 12/04/2022] Open
Abstract
Background The purpose of this study was to evaluate clinical and electrocardiographic characteristics in patients with fulminant myocarditis. Methods A total of 72 patients were divided into three groups: pericarditis (control: n = 25), acute myocarditis (n = 27), and fulminant myocarditis (n = 20). Patients' characteristics and electrocardiograms on admission were retrospectively analyzed in the three groups. Results BNP levels in the fulminant group were significantly higher than those in the other two groups. ST elevation was observed at lead aVR in the fulminant myocarditis group, whereas ST depression was observed at lead aVR in the other groups (p = .001). The maximum degree of ST elevation among the three groups was similar. However, the number of ST‐elevation leads in the fulminant myocarditis group was significantly lower than that in the other groups (p = .004). The voltage of R wave in lead V5 in the fulminant myocarditis group was significantly lower than that in the other groups (p = .005). Moreover, in the Cabrera sequence, the prevalence of ST elevation in the inferior leads, aVR, and V3–V6 in the fulminant myocarditis group was significantly or nearly significantly lower than that in the other groups. Conclusions In fulminant myocarditis, ST‐segment elevation was observed in lead aVR, and contrarily, the number and extent of ST‐segment elevation and R wave voltage were smaller than those in the other groups. These results suggest that the number of myocytes with maintained action potential may be reduced following progressive myocardial damage and interstitial edema due to severe inflammation.
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Affiliation(s)
- Tomonori Itoh
- Division of Cardiology, Department of Internal Medicine Iwate Medical University Shiwa‐gun Japan
- Division of Community Medicine, Department of Medical Education Iwate Medical University Shiwa‐gun Japan
| | - Takamasa Kobayashi
- Division of Cardiology, Department of Internal Medicine Iwate Medical University Shiwa‐gun Japan
| | - Yuya Oshikiri
- Division of Cardiology, Department of Internal Medicine Iwate Medical University Shiwa‐gun Japan
| | - Yumeka Arakawa
- School of Medicine Iwate Medical University Shiwa‐gun Japan
| | - Mamoru Satoh
- Division of Biomedical Information Analysis, Institute for Biomedical Sciences Iwate Medical University Shiwa‐gun Japan
| | - Yoshihiro Morino
- Division of Cardiology, Department of Internal Medicine Iwate Medical University Shiwa‐gun Japan
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Ishida M, Oshikiri Y, Kimura T, Sakamoto R, Shimoda Y, Ishikawa Y, Koeda Y, Taguchi Y, Itoh T, Morino Y. High-definition intravascular ultrasound versus optical frequency domain imaging for the detection of calcium modification and fracture in heavily calcified coronary lesion. Int J Cardiovasc Imaging 2022; 38:10.1007/s10554-021-02521-8. [PMID: 34988783 DOI: 10.1007/s10554-021-02521-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 12/30/2021] [Indexed: 11/24/2022]
Abstract
While optical frequency domain imaging (OFDI) can delineate calcium modification and fracture, the capability of high-definition intravascular ultrasound (HD-IVUS) for detecting these remains unclear. This study evaluated diagnostic accuracy of HD-IVUS for assessing calcium modification and fracture as compared to OFDI. HD-IVUS and OFDI were used during orbital or rotational atherectomy procedures conducted for 21 heavily calcified coronary lesions in 19 patients. With OFDI assessment used as the gold standard, diagnostic accuracies of HD-IVUS for calcium modification and fracture were compared every 1 mm to the matched pre-stenting images (n = 1129). Calcium modification, as assessed by OFDI, was defined as polished and concave-shaped calcium. For HD-IVUS, calcium modification was defined as the presence of reverberation with concave-shaped calcium. In both assessments, the definition of calcium fracture was defined as a slit or complete break in the calcium plate. Calcified plaque was found in 86.4% of analyzed OFDI images. Calcium modification and fracture were detected in 20.6% and 11.0% of detected calcified plaques. Sensitivity, specificity, positive and negative predictive values of HD-IVUS detection for calcium modification and fracture were 54.4%, 97.8%, 86.7%, 89.1% and 86.0%, 94.5%, 58.2%, 96.8%, respectively. Discordance cases between both assessments demonstrated that heterogeneous calcium visualized by OFDI, separated calcium, and guide wire artifact can be misdiagnosed. Diagnostic accuracies of HD-IVUS for assessing calcium modification and fracture were acceptable as compared to OFDI. Such findings can be of utility during imaging guided interventional procedures with atherectomy.
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Affiliation(s)
- Masaru Ishida
- Division of Cardiology, Department of Internal Medicine, Iwate Medical University, 2-1-1 Idaidori, Shiwa-gun, Yahaba-cho, Iwate, 028-3695, Japan.
| | - Yuya Oshikiri
- Division of Cardiology, Department of Internal Medicine, Iwate Medical University, 2-1-1 Idaidori, Shiwa-gun, Yahaba-cho, Iwate, 028-3695, Japan
| | - Takumi Kimura
- Division of Cardiology, Department of Internal Medicine, Iwate Medical University, 2-1-1 Idaidori, Shiwa-gun, Yahaba-cho, Iwate, 028-3695, Japan
| | - Ryohei Sakamoto
- Department of Cardiology, Nakadori General Hospital, Akita, Japan
| | - Yudai Shimoda
- Division of Cardiology, Department of Internal Medicine, Iwate Medical University, 2-1-1 Idaidori, Shiwa-gun, Yahaba-cho, Iwate, 028-3695, Japan
| | - Yu Ishikawa
- Division of Cardiology, Department of Internal Medicine, Iwate Medical University, 2-1-1 Idaidori, Shiwa-gun, Yahaba-cho, Iwate, 028-3695, Japan
| | - Yorihiko Koeda
- Division of Cardiology, Department of Internal Medicine, Iwate Medical University, 2-1-1 Idaidori, Shiwa-gun, Yahaba-cho, Iwate, 028-3695, Japan
| | - Yuya Taguchi
- Division of Cardiology, Department of Internal Medicine, Iwate Medical University, 2-1-1 Idaidori, Shiwa-gun, Yahaba-cho, Iwate, 028-3695, Japan
| | - Tomonori Itoh
- Division of Cardiology, Department of Internal Medicine, Iwate Medical University, 2-1-1 Idaidori, Shiwa-gun, Yahaba-cho, Iwate, 028-3695, Japan
| | - Yoshihiro Morino
- Division of Cardiology, Department of Internal Medicine, Iwate Medical University, 2-1-1 Idaidori, Shiwa-gun, Yahaba-cho, Iwate, 028-3695, Japan
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Watanabe M, Abe N, Oshikiri Y, Stanbridge EJ, Kitagawa T. Selective growth inhibition by glycogen synthase kinase-3 inhibitors in tumorigenic HeLa hybrid cells is mediated through NF-κB-dependent GLUT3 expression. Oncogenesis 2012; 1:e21. [PMID: 23552737 PMCID: PMC3412655 DOI: 10.1038/oncsis.2012.21] [Citation(s) in RCA: 18] [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] [Indexed: 12/14/2022] Open
Abstract
Carcinogenesis and cancer progression, driven by mutations in oncogenes and tumor-suppressor genes, result in biological differences between normal and cancer cells in various cellular processes. Specific genes and signaling molecules involved in such cellular processes may be potential therapeutic targets of agents that specifically interact with the key factors in cancer cells. Increased glucose uptake is fundamental to many solid tumors and well associated with increases in glycolysis and the overexpression of glucose transporters (GLUTs) such as GLUT1 and GLUT3 at the plasma membrane. Here, we used cell-based screening to identify glycogen synthase kinase-3β (GSK-3β) inhibitors that selectively target GLUT3-expressing tumorigenic HeLa cell hybrids as compared with non-tumorigenic hybrids that express GLUT1 alone. The GSK-3 inhibitors as well as GSK-3β RNAi suppressed GLUT3 expression at the level of transcription, leading to apoptosis. This suppression was associated with NF-κB in a p53-independent manner. Furthermore, GSK-3 inhibitors exhibited a synergistic effect with anticancer agents such as adriamycin and camptothecin in GULT3-overexpressing colon cancer cells, but little effect in non-producing A431 cells. These results suggest a potential use of GSK-3 inhibitors to selectively kill cancer cells that overexpress GLUT3.
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Affiliation(s)
- M Watanabe
- Department of Cell Biology and Molecular Pathology, Iwate Medical University, School of Pharmacy, Yahaba, Japan
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Shimura M, Watanabe S, Iwakura M, Oshikiri Y, Kusumoto M, Ikawa K, Sakamoto S. Correlation between measurements using a new halitosis monitor and organoleptic assessment. J Periodontol 1997; 68:1182-5. [PMID: 9444593 DOI: 10.1902/jop.1997.68.12.1182] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Halitosis is known as unpleasant oral odor and is a health concern among the general public. Previously, we reported on a new portable monitor with a zinc-oxide, thin-film, semiconductor sensor which demonstrated simplicity of handling, high reproducibility and correspondence for organoleptic assessment. The results suggested its usefulness for the diagnosis of halitosis. Using the monitor, oral air samples of 94 subjects were measured in a field survey, and the values were compared with the organoleptic rates of corresponding samples assessed by two judges. A highly significant correlation (r = 0.824, P < 0.01) was demonstrated between the measures obtained by the two methods. The results suggest that the monitor is useful for not only a clinical study but also a field study of halitosis.
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Affiliation(s)
- M Shimura
- Department of Preventive Dentistry, Tohoku University School of Dentistry, Sendai, Japan.
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