1
|
Morita H, Asada S, Ueoka A, Mizuno T, Masuda T, Miyamoto M, Kawada S, Nakagawa K, Nishii N, Yuasa S. Risk Stratification for the Occurrence of Ventricular Fibrillation in Patients with Early Repolarization Syndrome. Heart Rhythm 2024:S1547-5271(24)02535-9. [PMID: 38710349 DOI: 10.1016/j.hrthm.2024.04.101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 04/21/2024] [Accepted: 04/27/2024] [Indexed: 05/08/2024]
Abstract
(BACKGROUND) Several signs of malignant early repolarizations (ERs) have been proposed in patients with ER syndrome (ERS). However, recent reports have challenged the efficacy of these signs in predicting future ventricular fibrillation (VF) in patients with ERS. (OBJECTIVE) To assess the predictive value of various electrocardiograms (ECG) in predicting future VF events among ERS patients. (METHODS) We retrospectively evaluated the clinical characteristics of 44 ERS patients to identify risk factors for VF during follow-up. (RESULTS) Following the initial event, 16 patients experienced VF (VF group), while 28 did not (non-VF group). The VF group had a longer QRS interval, more fragmented QRS (fQRS), and a higher T/R voltage ratio than the non-VF group. Wide J-waves were more prevalent in the VF group; however, other J-wave markers did not differ between the groups. Positive late potentials (LPs) recorded on signal-averaged ECGs were more frequent in the VF group. While none of the patients showed spontaneous Brugada on ECG, the VF group frequently exhibited pilsicainide-induced ST-segment elevation. These ECG markers were significantly associated with the occurrence of VF during follow-up. Patients with multiple ECG factors: including QRS abnormalities (wide QRS or fQRS), wide J waves, and a high T/R ratio, had a worse prognosis than patients without multiple factors, effectively stratifying patient risk. (CONCLUSIONS) The occurrence of VF in patients with ERS may be associated with conduction abnormalities such as QRS widening, fQRS, high T/R ratio, positive LPs, and pilsicainide test results. Therefore, ECG factors could be useful in identifying high-risk patients.
Collapse
Affiliation(s)
- Hiroshi Morita
- Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan.
| | - Saori Asada
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry, Okayama 700-8558, Japan
| | - Akira Ueoka
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry, Okayama 700-8558, Japan
| | - Tomofumi Mizuno
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry, Okayama 700-8558, Japan
| | - Takuro Masuda
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry, Okayama 700-8558, Japan
| | - Masakazu Miyamoto
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry, Okayama 700-8558, Japan
| | - Satoshi Kawada
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry, Okayama 700-8558, Japan
| | - Koji Nakagawa
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry, Okayama 700-8558, Japan
| | - Nobuhiro Nishii
- Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan
| | - Shinsuke Yuasa
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry, Okayama 700-8558, Japan
| |
Collapse
|
2
|
Morita H, Ueoka A, Mizuno T, Masuda T, Asada S, Ejiri K, Miyamoto M, Kawada S, Nakagawa K, Nishii N, Yuasa S. Clinical characteristics of electrical storm in patients with early repolarization syndrome. Heart Rhythm 2024; 21:562-570. [PMID: 38242221 DOI: 10.1016/j.hrthm.2024.01.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 01/09/2024] [Accepted: 01/11/2024] [Indexed: 01/21/2024]
Abstract
BACKGROUND Early repolarization syndrome (ERS) is an idiopathic ventricular fibrillation (VF) associated with inferolateral J waves. While electrical storm (ES) in ERS is not rare, their characteristics and risk factors are not fully understood. OBJECTIVE This study aimed to clarify the significance of ES in ERS. METHODS We evaluated 44 patients with ERS who experienced VF/sudden cardiac death or arrhythmic syncope. We assessed clinical characteristics to identify the risk factors for ES. RESULTS In total, 13 patients (30%) experienced ES (ES group). Of these, 11 patients (85%) experienced ES during the acute phase of initial VF episodes and 2 patients (2%) experienced ES during follow-up. VF associated with ES occurred during therapeutic hypothermia in 6 of 13 patients (46%). The J-wave voltage during therapeutic hypothermia was higher in the ES group than that in the patients without ES. Isoproterenol was used in 5 patients (38%), which decreased J-wave voltage and relieved ES. Among the clinical markers, shorter QT and QTp intervals (the interval from QRS onset to the peak of T wave), pilsicainide-induced ST elevation, and high scores on the Shanghai Score System were associated with ES. Although pilsicainide induced ST elevation in 6 of 34 patients (18%), spontaneous Brugada electrocardiographic patterns did not appear to be associated with VF. Therapeutic hypothermia was also a risk factor for acute phase ES. CONCLUSION Patients with ERS in the ES group frequently had short QT and QTp intervals, pilsicainide-induced ST elevations, and high Shanghai Score System scores. Therapeutic hypothermia was also associated with acute phase ES.
Collapse
Affiliation(s)
- Hiroshi Morita
- Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama City, Okayama, Japan.
| | - Akira Ueoka
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry, Okayama City, Okayama, Japan
| | - Tomofumi Mizuno
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry, Okayama City, Okayama, Japan
| | - Takuro Masuda
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry, Okayama City, Okayama, Japan
| | - Saori Asada
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry, Okayama City, Okayama, Japan
| | - Kentaro Ejiri
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry, Okayama City, Okayama, Japan
| | - Masakazu Miyamoto
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry, Okayama City, Okayama, Japan
| | - Satoshi Kawada
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry, Okayama City, Okayama, Japan
| | - Koji Nakagawa
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry, Okayama City, Okayama, Japan
| | - Nobuhiro Nishii
- Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama City, Okayama, Japan
| | - Shinsuke Yuasa
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry, Okayama City, Okayama, Japan
| |
Collapse
|
3
|
Suzuki Y, Kaneko H, Okada A, Ohno R, Yokota I, Fujiu K, Jo T, Takeda N, Morita H, Node K, Yasunaga H, Komuro I. Comparison of SGLT2 inhibitors vs. DPP4 inhibitors for patients with metabolic dysfunction associated fatty liver disease and diabetes mellitus. J Endocrinol Invest 2024; 47:1261-1270. [PMID: 38114769 PMCID: PMC11035461 DOI: 10.1007/s40618-023-02246-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 11/11/2023] [Indexed: 12/21/2023]
Abstract
PURPOSE This study aimed to examine the potential benefit of sodium-glucose cotransporter 2 (SGLT2) inhibitors for patients with metabolic dysfunction-associated fatty liver disease (MAFLD) and diabetes mellitus (DM) using a real-world database. METHODS We analyzed individuals with MAFLD and DM newly initiated on SGLT2 or dipeptidyl peptidase 4 (DPP4) inhibitors from a large-scale administrative claims database. The primary outcome was the change in the fatty liver index (FLI) assessed using a linear mixed-effects model from the initiation of SGLT2 or DPP4 inhibitors. A propensity score-matching algorithm was used to compare the change in FLI among SGLT2 and DPP4 inhibitors. RESULTS After propensity score matching, 6547 well-balanced pairs of SGLT2 and 6547 DPP4 inhibitor users were created. SGLT2 inhibitor use was associated with a greater decline in FLI than DPP4 inhibitor use (difference at 1-year measurement, - 3.8 [95% CI - 4.7 to - 3.0]). The advantage of SGLT2 inhibitor use over DPP4 inhibitor use for improvement in FLI was consistent across subgroups. The relationship between SGLT2 inhibitors and amelioration of FLI was comparable between individual SGLT2 inhibitors. CONCLUSIONS Our analysis using large-scale real-world data demonstrated the potential advantage of SGLT2 inhibitors over DPP4 inhibitors in patients with MAFLD and DM.
Collapse
Grants
- 21AA2007 Ministry of Health, Labour and Welfare
- 20H03907 the Ministry of Education, Culture, Sports, Science and Technology
- 21H03159 the Ministry of Education, Culture, Sports, Science and Technology
- 21K08123 the Ministry of Education, Culture, Sports, Science and Technology
- 22K21133 the Ministry of Education, Culture, Sports, Science and Technology
- The University of Tokyo
Collapse
Affiliation(s)
- Y Suzuki
- The Department of Cardiovascular Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
- Center for Outcomes Research and Economic Evaluation for Health, National Institute of Public Health, Saitama, Japan
| | - H Kaneko
- The Department of Cardiovascular Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.
- The Department of Advanced Cardiology, The University of Tokyo, Tokyo, Japan.
| | - A Okada
- Department of Prevention of Diabetes and Lifestyle-Related Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - R Ohno
- The Department of Cardiovascular Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - I Yokota
- Department of Biostatistics, Faculty of Medicine, Hokkaido University, Sapporo, Japan
| | - K Fujiu
- The Department of Cardiovascular Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
- The Department of Advanced Cardiology, The University of Tokyo, Tokyo, Japan
| | - T Jo
- The Department of Health Services Research, The University of Tokyo, Tokyo, Japan
| | - N Takeda
- The Department of Cardiovascular Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - H Morita
- The Department of Cardiovascular Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - K Node
- Department of Cardiovascular Medicine, Saga University, Saga, Japan
| | - H Yasunaga
- Department of Clinical Epidemiology and Health Economics, School of Public Health, The University of Tokyo, Tokyo, Japan
| | - I Komuro
- The Department of Cardiovascular Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
- International University of Health and Welfare, Tokyo, Japan
- Department of Frontier Cardiovascular Science, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| |
Collapse
|
4
|
Ando M, Kato A, Kimura M, Ogura S, Kuwayama S, Kominami A, Kuwayama S, Obayashi T, Ando R, Monoe T, Morita H, Yasukawa T. Effects of Combination Therapy with Intravitreal Ranibizumab and Tissue Plasminogen Activator for Neovascular Age-Related Macular Degeneration. J Clin Med 2024; 13:2417. [PMID: 38673690 PMCID: PMC11050793 DOI: 10.3390/jcm13082417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 04/09/2024] [Accepted: 04/17/2024] [Indexed: 04/28/2024] Open
Abstract
Background: Subretinal hyper-reflective material (SHRM) sometimes causes vision loss in spite of anti-vascular endothelial growth factor (VEGF) therapy in eyes with neovascular age-related macular degeneration (nvAMD). We evaluated the impacts of combination therapy with intravitreal ranibizumab (IVR) and tissue plasminogen activator (tPA) in eyes with nvAMD accompanying SHRM. Methods: In total, 25 eyes of 25 patients (16 men and 9 women, 76.7 years old), who underwent IVR/tPA for nvAMD with SHRM and were followed up for at least 12 months, were retrospectively reviewed. In total, 15 eyes were treatment-naïve and 10 eyes had previous treatment for nvAMD. Results: In total, 16 eyes had type 2 macular neovascularization (MNV), 5 eyes type 1 MNV with fibrovascular pigment epithelial detachment and 4 eyes polypoidal choroidal vasculopathy. At month 12, SHRM regressed or reduced in 18 eyes (72%) and the best-corrected visual acuity (BCVA) improved in 6 eyes (24%) and was unchanged in 14 eyes (56%), while the mean BCVA was just stabilized. The mean central retinal thickness, macular volume and SHRM thickness significantly improved from 408 µm to 287 µm, from 11.9 mm3 to 9.6 mm3, from 369 µm to 165 µm, respectively (p < 0.01). Conclusions: The combination therapy with IVR/tPA for nvAMD with SHRM may help preserve vision by prompt regression of SHRM.
Collapse
Affiliation(s)
- Michiko Ando
- Department of Ophthalmology and Visual Science, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan; (M.A.); (M.K.); (S.O.); (S.K.); (A.K.); (S.K.); (T.O.); (R.A.); (T.M.); (H.M.); (T.Y.)
- Department of Ophthalmology, Ogaki Tokushukai Hospital, 6-85-1 Hayashimachi, Ogaki 503-0015, Japan
| | - Aki Kato
- Department of Ophthalmology and Visual Science, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan; (M.A.); (M.K.); (S.O.); (S.K.); (A.K.); (S.K.); (T.O.); (R.A.); (T.M.); (H.M.); (T.Y.)
| | - Masayo Kimura
- Department of Ophthalmology and Visual Science, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan; (M.A.); (M.K.); (S.O.); (S.K.); (A.K.); (S.K.); (T.O.); (R.A.); (T.M.); (H.M.); (T.Y.)
| | - Shuntaro Ogura
- Department of Ophthalmology and Visual Science, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan; (M.A.); (M.K.); (S.O.); (S.K.); (A.K.); (S.K.); (T.O.); (R.A.); (T.M.); (H.M.); (T.Y.)
| | - Soichiro Kuwayama
- Department of Ophthalmology and Visual Science, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan; (M.A.); (M.K.); (S.O.); (S.K.); (A.K.); (S.K.); (T.O.); (R.A.); (T.M.); (H.M.); (T.Y.)
- Department of Ophthalmology, Inazawa Kosei Hospital, 7 Sobuechojitchono, Inazawa 495-8531, Japan
| | - Aoi Kominami
- Department of Ophthalmology and Visual Science, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan; (M.A.); (M.K.); (S.O.); (S.K.); (A.K.); (S.K.); (T.O.); (R.A.); (T.M.); (H.M.); (T.Y.)
| | - Satoshi Kuwayama
- Department of Ophthalmology and Visual Science, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan; (M.A.); (M.K.); (S.O.); (S.K.); (A.K.); (S.K.); (T.O.); (R.A.); (T.M.); (H.M.); (T.Y.)
- Department of Ophthalmology, Ogaki Tokushukai Hospital, 6-85-1 Hayashimachi, Ogaki 503-0015, Japan
| | - Tomohiro Obayashi
- Department of Ophthalmology and Visual Science, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan; (M.A.); (M.K.); (S.O.); (S.K.); (A.K.); (S.K.); (T.O.); (R.A.); (T.M.); (H.M.); (T.Y.)
- Department of Ophthalmology, Daido Hospital, 9 Hakusui-cho, Minami-ku, Nagoya 457-8511, Japan
| | - Ryota Ando
- Department of Ophthalmology and Visual Science, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan; (M.A.); (M.K.); (S.O.); (S.K.); (A.K.); (S.K.); (T.O.); (R.A.); (T.M.); (H.M.); (T.Y.)
- Department of Ophthalmology, Nagoya City University East Medical Center, 1-2-23 Wakamizu, Chikusa-ku, Nagoya 464-8547, Japan
| | - Takafumi Monoe
- Department of Ophthalmology and Visual Science, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan; (M.A.); (M.K.); (S.O.); (S.K.); (A.K.); (S.K.); (T.O.); (R.A.); (T.M.); (H.M.); (T.Y.)
- Department of Ophthalmology, Central Japan International Medical Center, 1-1 Kenkonomachi, Minokamo 505-8510, Japan
| | - Hiroshi Morita
- Department of Ophthalmology and Visual Science, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan; (M.A.); (M.K.); (S.O.); (S.K.); (A.K.); (S.K.); (T.O.); (R.A.); (T.M.); (H.M.); (T.Y.)
| | - Tsutomu Yasukawa
- Department of Ophthalmology and Visual Science, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan; (M.A.); (M.K.); (S.O.); (S.K.); (A.K.); (S.K.); (T.O.); (R.A.); (T.M.); (H.M.); (T.Y.)
| |
Collapse
|
5
|
Hirasawa Y, Kakizoe Y, Tougan T, Uchiyama N, Horii T, Morita H. Vincarostine A, a novel anti-malarial trimeric monoterpenoid indole alkaloid from Catharanthus roseus. J Nat Med 2024:10.1007/s11418-024-01795-1. [PMID: 38564155 DOI: 10.1007/s11418-024-01795-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Accepted: 02/24/2024] [Indexed: 04/04/2024]
Abstract
A novel trimeric monoterpenoid indole alkaloid, vincarostine A (1) consisting of an aspidosperma-iboga-aspidosperma type skeleton, was isolated from the whole plant of Catharanthus roseus. The structure including absolute stereochemistry was elucidated on the basis of 2D NMR data and CD spectrum. Vincarostine A (1) showed anti-malarial activity.
Collapse
Affiliation(s)
- Yusuke Hirasawa
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-Ku, Tokyo, 142-8501, Japan.
| | - Yusuke Kakizoe
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-Ku, Tokyo, 142-8501, Japan
| | - Takahiro Tougan
- Research Center for Infectious Disease Control, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Nahoko Uchiyama
- National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-Ku, Kawasaki, Kanagawa, 210-9501, Japan
| | - Toshihiro Horii
- Department of Malaria Vaccine Development, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Hiroshi Morita
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-Ku, Tokyo, 142-8501, Japan.
| |
Collapse
|
6
|
Nakajima Y, Tsuboi N, Katori K, Waili M, Nugroho AE, Takahashi K, Nishino H, Hirasawa Y, Kawasaki Y, Goda Y, Kaneda T, Morita H. Oxomollugin, an oxidized substance in mollugin, inhibited LPS-induced NF-κB activation via the suppressive effects on essential activation factors of TLR4 signaling. J Nat Med 2024:10.1007/s11418-024-01798-y. [PMID: 38564154 DOI: 10.1007/s11418-024-01798-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Accepted: 02/27/2024] [Indexed: 04/04/2024]
Abstract
Oxomollugin is a degraded product of mollugin and was found to be an active compound that inhibits LPS-induced NF-κB activation. In this study, we investigated the inhibitory activity of oxomollugin, focusing on TLR4 signaling pathway, resulting in NF-κB activation. Oxomollugin inhibited the LPS-induced association of essential factors for initial activation of TLR4 signaling, MyD88, IRAK4 and TRAF6. Furthermore, oxomollugin showed suppressive effects on LPS-induced modification of IRAK1, IRAK2 and TRAF6, LPS-induced association of TRAF6-TAK1/TAB2, and followed by IKKα/β phosphorylation, which critical in signal transduction leading to LPS-induced NF-κB activation. The consistent results suggested that oxomollugin inhibits LPS-induced NF-κB activation via the suppression against signal transduction in TLR4 signaling pathway.The activities of oxomollugin reported in this study provides a deeper understanding on biological activity of mollugin derivatives as anti-inflammatory compounds.
Collapse
Affiliation(s)
- Yuki Nakajima
- School of Pharmacy and Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Naohide Tsuboi
- School of Pharmacy and Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Kumiko Katori
- School of Pharmacy and Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Maigunuer Waili
- School of Pharmacy and Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Alfarius Eko Nugroho
- School of Pharmacy and Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Kazunori Takahashi
- School of Pharmacy and Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Hitomi Nishino
- School of Pharmacy and Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Yusuke Hirasawa
- School of Pharmacy and Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Yoko Kawasaki
- National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa, 210-9501, Japan
| | - Yukihiro Goda
- National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa, 210-9501, Japan
| | - Toshio Kaneda
- School of Pharmacy and Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo, 142-8501, Japan.
| | - Hiroshi Morita
- School of Pharmacy and Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo, 142-8501, Japan.
| |
Collapse
|
7
|
Matsuura S, Nagata S, Shibazaki K, Uchida R, Imai Y, Shibata S, Morita H. Increased skeletal muscle mass index was involved in glycemic efficacy following diabetes treatment, and changes in fat mass index correlated with the changes in the lipid ratio in type 2 diabetes. J Diabetes Complications 2024; 38:108717. [PMID: 38422562 DOI: 10.1016/j.jdiacomp.2024.108717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 11/01/2023] [Accepted: 02/26/2024] [Indexed: 03/02/2024]
Abstract
AIM This study aimed to investigate the association between changes in body composition, glycated hemoglobin, and lipid ratio during the treatment of patients with type 2 diabetes mellitus (T2DM). METHODS This retrospective analysis used data from outpatients with T2DM who had confirmed body composition and measured laboratories at administration and after treatment. The baseline characteristics and prescribed treatment were collected. The total cholesterol/high-density lipoprotein cholesterol (HDL) ratio, low-density lipoprotein cholesterol (LDL)/HDL ratio, and triglyceride-glucose (TyG) index were also calculated. RESULTS A total of 207 patients (mean patient age, 62.0 ± 13.7 years; 68.1 % males) were enrolled. Fat mass index (FMI) changes correlated with the changes in the lipid ratio, whereas skeletal muscle mass index (SMI) changes inversely correlated with glycated hemoglobin (HbA1c) changes. Multiple regression analysis showed that changes in LDL/HDL and TyG correlated with FMI changes (t = 2.388, p = 0.017, t = 2.022, p = 0.044). Conversely, HbA1c changes correlated with SMI changes (t = -2.552, p = 0.011). CONCLUSION In patients with T2DM, increased SMI was involved in glycemic efficacy, and FMI changes were associated with LDL/HDL and TyG.
Collapse
Affiliation(s)
- Shun Matsuura
- Division of Diabetes Endocrinology Medicine, Fujieda Municipal General Hospital, 4-1-11, Surugadai, Fujieda, Shizuoka 426-8677, Japan; Division of Respiratory Internal Medicine, Fujieda Municipal General Hospital, 4-1-11, Surugadai, Fujieda, Shizuoka 426-8677, Japan.
| | - Soichiro Nagata
- Division of Diabetes Endocrinology Medicine, Fujieda Municipal General Hospital, 4-1-11, Surugadai, Fujieda, Shizuoka 426-8677, Japan
| | - Koji Shibazaki
- Division of Diabetes Endocrinology Medicine, Fujieda Municipal General Hospital, 4-1-11, Surugadai, Fujieda, Shizuoka 426-8677, Japan
| | - Reiko Uchida
- Division of Diabetes Endocrinology Medicine, Fujieda Municipal General Hospital, 4-1-11, Surugadai, Fujieda, Shizuoka 426-8677, Japan
| | - Yukiko Imai
- Division of Diabetes Endocrinology Medicine, Fujieda Municipal General Hospital, 4-1-11, Surugadai, Fujieda, Shizuoka 426-8677, Japan
| | - Shoko Shibata
- Division of Diabetes Endocrinology Medicine, Fujieda Municipal General Hospital, 4-1-11, Surugadai, Fujieda, Shizuoka 426-8677, Japan
| | - Hiroshi Morita
- Division of Diabetes Endocrinology Medicine, Fujieda Municipal General Hospital, 4-1-11, Surugadai, Fujieda, Shizuoka 426-8677, Japan
| |
Collapse
|
8
|
Yasui Y, Kato H, Ogura S, Kimura M, Kato A, Hirano Y, Morita H, Yasukawa T, Kurachi A, Takeda S, Morita A. Electrical stimulation of the lower eyelid orbicularis oculi muscle improves periocular dark circles. Skin Res Technol 2024; 30:e13678. [PMID: 38616507 PMCID: PMC11016813 DOI: 10.1111/srt.13678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 01/16/2024] [Indexed: 04/16/2024]
Abstract
BACKGROUND We developed and tested the safety and efficacy of a cosmetic device to improve dark circles using electrical muscle stimulation of the orbicularis oculi muscle. METHODS Overall, 18 participants (36 eyes) were studied. The following five items were evaluated before and after the intervention:(1) the Clinical Dark Circle Score using clinical findings and photographs, (2) transcutaneous oxygen partial pressure (TcPO2) on the lower eyelid, (3) thermography, (4) two-dimensional laser blood flowmetry, and (5) spectrophotometry. RESULTS The mean score at baseline was 2.0 ± 0.90 (mean ± standard deviation), and that at the end of the study was 1.2 ± 1.0 (Wilcoxon signed-rank sum test, p < 0.0001), indicating a significant reduction. The spectrophotometer showed a significant decrease in a* and L* values before and after use (Wilcoxon signed-rank sum test, p < 0.0001). There was also a weak negative correlation between the change in score and the change in blood flow and TcPO2 measured using a laser perfusion device (Spearman's rank correlation coefficient, r = -0.32 and -0.39, respectively). Stratified analysis of the baseline score showed a strong negative correlation between the change in score and the change in spectrophotometric a* in the subjects/group with mild periocular dark circles (Spearman's rank correlation coefficient, r = -0.46). Contrastingly, no correlation was observed for any of the measurements in the subjects/group with severe periocular dark circles. After 1 month, no device-related ophthalmic adverse events were observed in any of the participants. CONCLUSION Electrical muscle stimulation could improve periocular dark circles, especially in the subjects/group with mild periocular dark circles, and was safe.
Collapse
Affiliation(s)
- Yukiko Yasui
- Department of Geriatric and Environmental DermatologyNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Hiroshi Kato
- Department of Geriatric and Environmental DermatologyNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Shuntaro Ogura
- Department of Ophthalmology and Visual ScienceNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Masayo Kimura
- Department of Ophthalmology and Visual ScienceNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Aki Kato
- Department of Ophthalmology and Visual ScienceNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Yoshio Hirano
- Department of Ophthalmology and Visual ScienceNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Hiroshi Morita
- Department of Ophthalmology and Visual ScienceNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | - Tsutomu Yasukawa
- Department of Ophthalmology and Visual ScienceNagoya City University Graduate School of Medical SciencesNagoyaJapan
| | | | | | - Akimichi Morita
- Department of Geriatric and Environmental DermatologyNagoya City University Graduate School of Medical SciencesNagoyaJapan
| |
Collapse
|
9
|
Hirasawa Y, Kase A, Okamoto A, Suzuki K, Hiroki M, Kaneda T, Uchiyama N, Morita H. Vincazalidine A, a unique bisindole alkaloid from Catharanthus roseus. J Nat Med 2024; 78:382-392. [PMID: 38347371 DOI: 10.1007/s11418-023-01775-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 12/20/2023] [Indexed: 02/29/2024]
Abstract
A new dimeric indole alkaloid, vincazalidine A consisting of an aspidosperma type and a modified iboga type with 1-azatricyclo ring system consisting of one azepane and two piperidine rings coupled with an oxazolidine ring was isolated from Catharanthus roseus, and the structure including absolute stereochemistry was elucidated on the basis of spectroscopic data as well as DP4 statistical analysis. Vincazalidine A induced G2 arrest and subsequent apoptosis in human lung carcinoma cell line, A549 cells.
Collapse
Affiliation(s)
- Yusuke Hirasawa
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-Ku, Tokyo, 142-8501, Japan.
| | - Ayaka Kase
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-Ku, Tokyo, 142-8501, Japan
| | - Akie Okamoto
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-Ku, Tokyo, 142-8501, Japan
| | - Keigo Suzuki
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-Ku, Tokyo, 142-8501, Japan
| | - Mizuki Hiroki
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-Ku, Tokyo, 142-8501, Japan
| | - Toshio Kaneda
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-Ku, Tokyo, 142-8501, Japan
| | - Nahoko Uchiyama
- National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-Ku, Kawasaki, Kanagawa, 210-9501, Japan
| | - Hiroshi Morita
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-Ku, Tokyo, 142-8501, Japan.
| |
Collapse
|
10
|
Morita H, Nakagawa K, Ueoka A, Mizuno T, Masuda T, Asada S, Miyamoto M, Kawada S, Nishii N, Nakamura K. Significant delayed conduction and characteristic ventricular tachycardias in patients with cardiac sarcoidosis and electrical storm. J Cardiovasc Electrophysiol 2024; 35:307-316. [PMID: 38105352 DOI: 10.1111/jce.16156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 11/27/2023] [Accepted: 12/04/2023] [Indexed: 12/19/2023]
Abstract
INTRODUCTION Electrical storm (ES) of ventricular tachyarrhythmias (VTAs) is an important cause of sudden death in patients with cardiac sarcoidosis (CS). VTAs in CS are associated with myocardial scarring and inflammation. However, little is known about the risk factors of ES in patients with CS and VTAs. The objective of this study is to clarify the characteristics and risk factors for the development of ES in patients with CS. METHODS The study population included consecutive 52 patients with CS and sustained VTA. Twenty-five out of 52 patients experienced ES. We evaluated clinical characteristics, imaging modalities, and electrocardiogram (ECG) parameters to determine the risk factors associated with ES. RESULTS Half of the patients experienced VTAs as the initial symptom of sarcoidosis, and eight patients had ES as the initial VTA episode. There were no differences in cardiac imaging abnormalities between patients with and without ES. Among ECG markers, significant QRS fragmentation (odds ratio [OR]: 7.9, p = .01) and epsilon waves (OR: 12.24, p = .02) were associated with ES. Among the ventricular tachycardia (VT) characteristics, multiple morphologies of monomorphic VTs (OR: 10.9, p < .01), short VT cycle lengths (OR: 12.5, p < .01), and polymorphic VT (OR: 13.5, p < .01) were associated with ES. Bidirectional VTs were detected in 10 patients with ES and one patient without ES. Immunosuppressive therapy relieved ES in some patients. CONCLUSIONS ES was common in patients with CS and VTAs. Significant depolarization abnormalities that appeared as QRS fragmentation, epsilon waves, and specific VT characteristics were associated with ES.
Collapse
Affiliation(s)
- Hiroshi Morita
- Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Koji Nakagawa
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry, Okayama, Japan
| | - Akira Ueoka
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry, Okayama, Japan
| | - Tomofumi Mizuno
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry, Okayama, Japan
| | - Takuro Masuda
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry, Okayama, Japan
| | - Saori Asada
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry, Okayama, Japan
| | - Masakazu Miyamoto
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry, Okayama, Japan
| | - Satoshi Kawada
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry, Okayama, Japan
| | - Nobuhiro Nishii
- Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Kazufumi Nakamura
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry, Okayama, Japan
| |
Collapse
|
11
|
Katoh T, Yashima M, Takahashi N, Watanabe E, Ikeda T, Kasamaki Y, Sumitomo N, Ueda N, Morita H, Hiraoka M. Expert consensus document on automated diagnosis of the electrocardiogram: The task force on automated diagnosis of the electrocardiogram in Japan part 3: Inappropriate internal processing in the automatic diagnosis of electrocardiograms and its problems. J Arrhythm 2024; 40:17-25. [PMID: 38333400 PMCID: PMC10848584 DOI: 10.1002/joa3.12962] [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: 10/03/2023] [Revised: 11/07/2023] [Accepted: 11/09/2023] [Indexed: 02/10/2024] Open
Abstract
Computer diagnosis of electrocardiograms is widely used to provide useful information in clinical practice and medical checkups. However, it is common for users to be confused by the inappropriate diagnosis. We illustrate some examples of inappropriate automatic diagnoses and discuss the actual situation of inappropriate automatic processing and its problems.
Collapse
Affiliation(s)
- Takao Katoh
- ClinicTobu Railway Co. Ltd.TokyoJapan
- Department of CardiologyNippon Medical SchoolTokyoJapan
| | | | - Naohiko Takahashi
- Department of Cardiology and Clinical ExaminationOita UniversityOitaJapan
| | - Eiichi Watanabe
- Department of CardiologyFujita Health University Bantane HospitalNagoyaJapan
| | - Takanori Ikeda
- Department of CardiologyToho University Medical Center Omori HospitalTokyoJapan
| | - Yuji Kasamaki
- Department of MedicineKanazawa Medical University Himi Medical CenterHimiJapan
| | - Naokata Sumitomo
- Department of PediatricsSaitama Medical University International Medical CenterSaitamaJapan
| | - Norihiro Ueda
- Department of Medical EducationNagoya City UniversityNagoyaJapan
| | - Hiroshi Morita
- Graduate School of Medicine Dentistry and Pharmaceutical SciencesOkayama UniversityOkayamaJapan
| | - Masayasu Hiraoka
- Department of CardiologyTokyo Medical & Dental UniversityTokyoJapan
| |
Collapse
|
12
|
Kawada S, Tanimoto M, Onishi N, Takaishi A, Morita H. Successful use of lidocaine hydrochloride in the management of ventricular arrhythmias in a case of pilsicainide intoxication. HeartRhythm Case Rep 2024; 10:119-123. [PMID: 38404968 PMCID: PMC10885686 DOI: 10.1016/j.hrcr.2023.10.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2024] Open
Affiliation(s)
- Satoshi Kawada
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Masafumi Tanimoto
- Department of Cardiovascular Medicine, Mitoyo General Hospital, Kagawa, Japan
| | - Nobuhiko Onishi
- Department of Cardiovascular Medicine, Mitoyo General Hospital, Kagawa, Japan
| | - Atsushi Takaishi
- Department of Cardiovascular Medicine, Mitoyo General Hospital, Kagawa, Japan
| | - Hiroshi Morita
- Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| |
Collapse
|
13
|
Nagase S, Oka S, Kamakura T, Aiba T, Morita H, Kusano K. Local dispersion of repolarization in the occurrence of ventricular fibrillation in Brugada syndrome: Possibility of phase 2 reentry? Pacing Clin Electrophysiol 2024. [PMID: 38214176 DOI: 10.1111/pace.14917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 11/30/2023] [Accepted: 12/21/2023] [Indexed: 01/13/2024]
Abstract
To date, there have been no reports of recording epicardial electrograms at the onset of spontaneous ventricular fibrillation (VF) in patients with Brugada syndrome (BrS). In the case of BrS, unipolar and bipolar electrogram recording on the right ventricular epicardium revealed that dispersion of repolarization with delayed potential was associated with spontaneous occurrence of VF. Phase 2 reentry associated with shortening and dispersion of action potential could have been recorded for the first time in BrS. Epicardial unipolar mapping can guide accurate and appropriate ablation for the elimination of arrhythmia substrate in J wave syndrome.
Collapse
Affiliation(s)
- Satoshi Nagase
- Department of Advanced Arrhythmia and Translational Medical Science, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Satoshi Oka
- Division of Arrhythmia, Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Tsukasa Kamakura
- Division of Arrhythmia, Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Takeshi Aiba
- Division of Arrhythmia, Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Hiroshi Morita
- Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Kengo Kusano
- Division of Arrhythmia, Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan
| |
Collapse
|
14
|
Hiroki M, Abulikemu A, Totsuka C, Hirasawa Y, Kaneda T, Morita H. Isovincathicine from Catharanthus roseus induces apoptosis in A549 cells. J Nat Med 2024; 78:216-225. [PMID: 37668823 DOI: 10.1007/s11418-023-01740-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 07/31/2023] [Indexed: 09/06/2023]
Abstract
A dimeric indole alkaloid, isovincathicine consisting of an aspidosperma type and modified iboga with C-7-C-20 connection type skeletons was first isolated from Catharanthus roseus, and the structure including stereochemistry was elucidated on the basis of spectroscopic data as well as DP4 statistical analysis. Isovincathicine inhibited cell proliferation in A549 cells. We investigated the detailed mode of action of isovincathicine-induced inhibitory effects on cell proliferation in A549 cells. Flow cytometric analysis showed that isovincathicine-treated cells accumulated in the G2 phase after 24 h, and the percentage of cells showing cell death increased after 48 h. Western blotting also showed increased expression of BimEL, an apoptosis-related protein, and decreased expression of Mcl-1 and Bcl-xL. Isovincathicine was suggested to induce apoptosis in A549 cells by a mechanism is similar to that of vinblastine.
Collapse
Affiliation(s)
- Mizuki Hiroki
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Aishanjiang Abulikemu
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Chihiro Totsuka
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Yusuke Hirasawa
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo, 142-8501, Japan.
| | - Toshio Kaneda
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Hiroshi Morita
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo, 142-8501, Japan.
| |
Collapse
|
15
|
Komatsu Y, Nogami A, Hocini M, Morita H, Sato N, Marijon E, Arentz T, Yli-Mäyry S, Onishi Y, Kowase S, Duchateau J, Benali K, Takase T, Hosaka Y, Takei A, Nakajima I, Kawamura M, Inden Y, Ieda M, Aonuma K, Haïssaguerre M. Triggers of Ventricular Fibrillation in Patients With Inferolateral J-Wave Syndrome. JACC Clin Electrophysiol 2024; 10:1-12. [PMID: 37855774 DOI: 10.1016/j.jacep.2023.09.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 09/13/2023] [Accepted: 09/16/2023] [Indexed: 10/20/2023]
Abstract
BACKGROUND There are few data on ventricular fibrillation (VF) initiation in patients with inferolateral J waves. OBJECTIVES This multicenter study investigated the characteristics of triggers initiating spontaneous VF in inferolateral J-wave syndrome. METHODS A total of 31 patients (age 37 ± 14 years, 24 male) with spontaneous VF episodes associated with inferolateral J waves were evaluated to determine the origin and characteristics of triggers. The J-wave pattern was recorded in inferior leads in 11 patients, lateral leads in 3, and inferolateral leads in 17. RESULTS The VF triggers (n = 37) exhibited varying QRS durations (176 ± 21 milliseconds, range 119-219 milliseconds) and coupling intervals (339 ± 46 milliseconds, range 250-508 milliseconds) with a right (70%) or left (30%) bundle branch block (BBB) pattern. Trigger patterns were associated with J-wave location: left BBB triggers with inferior J waves and right BBB triggers with lateral J waves. Electrophysiologic study was performed for 22 VF triggers in 19 patients. They originated from the left or right Purkinje system in 6 and from the ventricular myocardium in 10 and were undetermined in 6. Purkinje vs myocardial triggers showed distinct electrocardiographic characteristics in coupling interval and QRS-complex duration and morphology. Abnormal epicardial substrate associated with fragmented electrograms was identified in 9 patients, with triggers originating from the same region in 7 patients. Catheter ablation resulted in VF suppression in 15 patients (79%). CONCLUSIONS VF initiation in inferolateral J-wave syndrome is associated with significant individual heterogeneity in trigger characteristics. Myocardial triggers have electrocardiographic features distinct from Purkinje triggers, and their origin often colocalizes with an abnormal epicardial substrate.
Collapse
Affiliation(s)
- Yuki Komatsu
- Department of Cardiology, Institute of Medicine, University of Tsukuba, Tsukuba, Japan.
| | - Akihiko Nogami
- Department of Cardiology, Institute of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Mélèze Hocini
- Department of Electrophysiology and Cardiac Stimulation, Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France
| | - Hiroshi Morita
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama, Japan
| | - Nobuyuki Sato
- Department of Cardiology, Asahikawa Medical University, Asahikawa, Japan
| | - Eloi Marijon
- Cardiology Department, Rhythmology Unit, Hôpital Européen Georges Pompidou, Paris, France
| | - Thomas Arentz
- Arrhythmia Division, Clinic for Cardiology and Angiology, University Heart Center Freiburg-Bad Krozingen, Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany
| | - Sinikka Yli-Mäyry
- Heart Hospital, Tampere University Hospital and Tampere University, Tampere, Finland
| | - Yoshimi Onishi
- Division of Cardiology, Showa University School of Medicine, Tokyo, Japan
| | - Shinya Kowase
- Department of Heart Rhythm Management, Yokohama Rosai Hospital, Yokohama, Japan
| | - Josselin Duchateau
- Department of Electrophysiology and Cardiac Stimulation, Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France
| | - Karim Benali
- Department of Electrophysiology and Cardiac Stimulation, Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France
| | - Tetsuro Takase
- Department of Cardiology, Ayase Heart Hospital, Tokyo, Japan
| | - Yukio Hosaka
- Department of Cardiovascular Medicine, Niigata City General Hospital, Niigata, Japan
| | - Asumi Takei
- Department of Cardiovascular Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Ikutaro Nakajima
- Division of Cardiology, Department of Internal Medicine, St Marianna University School of Medicine, Kawasaki, Japan
| | - Mitsuharu Kawamura
- Division of Cardiology, Showa University School of Medicine, Tokyo, Japan
| | - Yasuya Inden
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Masaki Ieda
- Department of Cardiology, Institute of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Kazutaka Aonuma
- Department of Cardiology, Institute of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Michel Haïssaguerre
- Department of Electrophysiology and Cardiac Stimulation, Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France
| |
Collapse
|
16
|
Nugroho AE, Komuro T, Kawaguchi T, Shindo Y, Wong CP, Hirasawa Y, Kaneda T, Tougan T, Horii T, Hadi AHA, Morita H. Ceramicines U-Z from Chisocheton ceramicus and structure-antimalarial activity relationship study. J Nat Med 2024; 78:68-77. [PMID: 37690111 DOI: 10.1007/s11418-023-01746-2] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 08/20/2023] [Indexed: 09/12/2023]
Abstract
Ceramicines are a series of limonoids which were isolated from the barks of Malaysian Chisocheton ceramicus (Meliaceae), and were known to show various biological activity. Six new limonoids, ceramicines U-Z (1-6), with a cyclopentanone[α]phenanthrene ring system with a β-furyl ring at C-17 were isolated from the barks of C. ceramicus. Their structures were determined on the basis of the 1D and 2D NMR analyses, and their absolute configurations were investigated by CD spectroscopy. Ceramicine W (3) exhibited potent antimalarial activity against Plasmodium falciparum 3D7 strain with IC50 value of 1.2 µM. In addition, the structure-antimalarial activity relationship (SAR) of the ceramicines was investigated to identify substituent patterns that may enhance activity. It appears that ring B and the functional groups in the vicinity of rings B and C are critical for the antimalarial activity of the ceramicines. In particular, bulky ester substituents with equatorial orientation at C-7 and C-12 greatly increase the antimalarial activity.
Collapse
Affiliation(s)
- Alfarius Eko Nugroho
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-Ku, Tokyo, 142-8501, Japan
| | - Tomoyuki Komuro
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-Ku, Tokyo, 142-8501, Japan
| | - Takuya Kawaguchi
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-Ku, Tokyo, 142-8501, Japan
| | - Yusuke Shindo
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-Ku, Tokyo, 142-8501, Japan
| | - Chin Piow Wong
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-Ku, Tokyo, 142-8501, Japan
| | - Yusuke Hirasawa
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-Ku, Tokyo, 142-8501, Japan.
| | - Toshio Kaneda
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-Ku, Tokyo, 142-8501, Japan
| | - Takahiro Tougan
- Research Center for Infectious Disease Control, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Toshihiro Horii
- Department of Malaria Vaccine Development, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - A Hamid A Hadi
- Department of Chemistry, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Hiroshi Morita
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-Ku, Tokyo, 142-8501, Japan.
| |
Collapse
|
17
|
Miyamoto M, Morita H, Mizuno T, Masuda T, Ueoka A, Asada S, Kawada S, Nakagawa K, Nishii N. Significance of left posterior extension of early repolarization in patients with J-wave syndrome. Heart Rhythm 2023; 20:1729-1736. [PMID: 37634559 DOI: 10.1016/j.hrthm.2023.08.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 08/22/2023] [Accepted: 08/22/2023] [Indexed: 08/29/2023]
Abstract
BACKGROUND J waves in the inferior or lateral leads are characteristic electrocardiographic (ECG) changes in patients with early repolarization syndrome (ERS). However, the presence of J waves in the left posterior region has not yet been evaluated. OBJECTIVE The purpose of this study was to clarify the significance of J waves in the posterior left ventricle using leads V7-V9 and a body surface mapping (BSM) system. METHODS Forty patients diagnosed with ERS were included. All patients exhibited J waves in either the contiguous inferior, lateral, or posterior leads. We evaluated the incidence of J waves in the inferolateral and posterior leads using a 15-lead ECG with synthesized V7-V9 and an 87-lead BSM. Additionally, we assessed the arrhythmogenicity of the posterior regions based on the morphology of the premature ventricular complexes (PVCs) associated with ventricular fibrillation (VF). RESULTS J waves were observed in the lateral, inferior, and posterior leads of 26 (65%), 31 (78%), and 39 (97%) patients, respectively. J waves were found only in the posterior leads of 5 patients. BSM was evaluated in 9 patients, all of whom exhibited a positive area on the posterior region. PVCs associated with VF were recorded in 5 patients. Among patients with inferolateral and posterior J waves, all except 1 patient who displayed left bundle branch block morphology showed PVCs originating from the posterior left ventricular region. CONCLUSION Posterior J waves are common in ERS patients. This abnormality can be detected using leads V7-V9 and the BSM system and may be associated with arrhythmogenesis.
Collapse
Affiliation(s)
- Masakazu Miyamoto
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry, Okayama, Japan
| | - Hiroshi Morita
- Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan.
| | - Tomofumi Mizuno
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry, Okayama, Japan
| | - Takuro Masuda
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry, Okayama, Japan
| | - Akira Ueoka
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry, Okayama, Japan
| | - Saori Asada
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry, Okayama, Japan
| | - Satoshi Kawada
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry, Okayama, Japan
| | - Koji Nakagawa
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry, Okayama, Japan
| | - Nobuhiro Nishii
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry, Okayama, Japan; Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| |
Collapse
|
18
|
Kawada S, Nishii N, Mizuno T, Miyamoto M, Nakagawa K, Morita H. Management of sensing issues with a subcutaneous implantable cardioverter-defibrillator in a patient with Brugada syndrome: A case report. HeartRhythm Case Rep 2023; 9:878-882. [PMID: 38204842 PMCID: PMC10774532 DOI: 10.1016/j.hrcr.2023.09.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024] Open
Affiliation(s)
- Satoshi Kawada
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Nobuhiro Nishii
- Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Tomofumi Mizuno
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Masakazu Miyamoto
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Koji Nakagawa
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Hiroshi Morita
- Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| |
Collapse
|
19
|
Asada S, Nakagawa K, Nishii N, Morita H, Nakamura K. A variability of the QRS morphology during wide QRS tachycardia. Pacing Clin Electrophysiol 2023; 46:1568-1571. [PMID: 37932889 DOI: 10.1111/pace.14871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 10/25/2023] [Accepted: 10/29/2023] [Indexed: 11/08/2023]
Affiliation(s)
- Saori Asada
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama, Japan
| | - Koji Nakagawa
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama, Japan
| | - Nobuhiro Nishii
- Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Hiroshi Morita
- Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Kazufumi Nakamura
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama, Japan
| |
Collapse
|
20
|
Morita H, Nagase S. The Mechanism of Brugada Syndrome: Is it Induced Only by Conduction Disturbance? JACC Clin Electrophysiol 2023; 9:2356. [PMID: 38030334 DOI: 10.1016/j.jacep.2023.08.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 08/22/2023] [Indexed: 12/01/2023]
Affiliation(s)
- Hiroshi Morita
- Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan.
| | - Satoshi Nagase
- Department of Advanced Arrhythmia and Translational Medical Science, National Cerebral and Cardiovascular Center, Suita, Japan
| |
Collapse
|
21
|
Miura T, Funada M, Shimoi Y, Morita H. Simulation Study of the Effect of Nanoporous Surfaces on the Adhesion Properties of Cross-Linked Polymer Networks. J Phys Chem B 2023; 127:8496-8508. [PMID: 37733722 DOI: 10.1021/acs.jpcb.3c03310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/23/2023]
Abstract
We have investigated the effect of surface nanopores on the adhesion behavior between cross-linked polymer networks and metal substrates by molecular dynamics simulations. By increasing the cross-linking ratio of the polymer network, the fracture behavior in tensile mode changed from cohesive failure to interfacial failure. In the case of polymers without cross-links, the breaking strengths were almost the same for systems with flat and porous metal substrates. Conversely, in the case of cross-linked polymer networks, the tensile behavior for the porous metal substrates depended on the cross-linking ratio and structure of the polymer chains. For polymer networks consisting of long polymer chains, the force curves in extension mode before the yield points were almost the same for the systems regardless of the surface roughness caused by nanopores. Meanwhile, for highly cross-linked resin networks consisting of short rigid molecules, the yielding strength of the porous metal surfaces showed slightly higher values than that of the flat metal surfaces. The simulation results revealed that the adhesion behavior between cross-linked polymer networks and rough metal surfaces is related not only to the interfacial area but also to the detailed networking topology of the polymers.
Collapse
Affiliation(s)
- Toshiaki Miura
- National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan
| | - Maki Funada
- Innovative Structural Materials Association (ISMA), AIST Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Yukihiro Shimoi
- National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan
| | - Hiroshi Morita
- National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan
| |
Collapse
|
22
|
Asada S, Morita H, Mizuno T, Masuda T, Ueoka A, Miyamoto M, Kawada S, Nakagawa K, Nishii N. Syncope and loss of consciousness after implantation of a cardioverter-defibrillator in patients with Brugada syndrome: Prevalence and characteristics in long-term follow-up. Heart Rhythm O2 2023; 4:641-649. [PMID: 37936673 PMCID: PMC10626187 DOI: 10.1016/j.hroo.2023.09.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2023] Open
Abstract
Background Syncope is a significant prognostic factor in patients with Brugada syndrome (BrS). However, the risk of ventricular arrhythmia in patients with nonarrhythmic loss of consciousness (LOC) is similar to that in asymptomatic patients. LOC events after implantable cardioverter-defibrillator (ICD) implantation may provide insights into underlying causes of the initial LOC episode. Objective The purpose of this study was to examine LOC characteristics following ICD implantation. Methods We retrospectively analyzed 112 patients with BrS (mean age 47 years; 111 men) who were treated with an ICD. The patients were classified into 3 groups based on symptoms at implantation: asymptomatic (35 patients); LOC (46 patients); and ventricular tachyarrhythmia (VTA) (31 patients). We evaluated the incidence and cause of LOC during long-term follow-up after ICD implantation. Results During mean follow-up of 12.2 years, 41 patients (37%) experienced LOC after ICD implantation. Arrhythmic LOC occurred in 5 asymptomatic patients, 14 LOC patients, and 16 patients with VTA. Nonarrhythmic LOC, similar to the initial episode, occurred after ICD implantation in 6 patients with prior LOC (2 with neurally mediated syncope and 4 with epilepsy). Most epileptic patients experienced LOC during rest or sleeping, and did not show an abnormal encephalogram during initial evaluation of the LOC episodes. Conclusion After ICD implantation, 13% of patients had nonarrhythmic LOC similar to the initial episode. Accurate classification of LOC based on a detailed medical history is important for risk stratification, although distinguishing arrhythmic LOC from epilepsy-related LOC episodes can be challenging depending on the circumstances and characteristics of the LOC event.
Collapse
Affiliation(s)
- Saori Asada
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Hiroshi Morita
- Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Tomofumi Mizuno
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Takuro Masuda
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Akira Ueoka
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Masakazu Miyamoto
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Satoshi Kawada
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Koji Nakagawa
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Nobuhiro Nishii
- Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| |
Collapse
|
23
|
Huang Y, Yokoe H, Kaiho-Soma A, Takahashi K, Hirasawa Y, Morita H, Ohtake F, Kanoh N. Correction to "Design, Synthesis, and Evaluation of Trivalent PROTACs Having a Functionalization Site with Controlled Orientation". Bioconjug Chem 2023; 34:1716-1717. [PMID: 37642326 DOI: 10.1021/acs.bioconjchem.3c00364] [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: 08/31/2023]
|
24
|
Kawada S, Morita H, Miyamoto M, Asada S, Nakagawa K, Nishii N. Ventricular arrhythmias induced by phase 2 reentry in a patient with J-wave syndrome. HeartRhythm Case Rep 2023; 9:629-633. [PMID: 37746567 PMCID: PMC10511901 DOI: 10.1016/j.hrcr.2023.06.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/26/2023] Open
Affiliation(s)
- Satoshi Kawada
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Hiroshi Morita
- Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Masakazu Miyamoto
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Saori Asada
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Koji Nakagawa
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Nobuhiro Nishii
- Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| |
Collapse
|
25
|
Hosoya R, Morita H. Stress Chain Analysis for an ABA Triblock Copolymer Using Principal Component Scores. J Phys Chem B 2023; 127:7035-7047. [PMID: 37506030 DOI: 10.1021/acs.jpcb.3c01846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/30/2023]
Abstract
Researchers characterize the mechanical properties of ABA triblock copolymers by structures such as chain conformation. During elongation, bridge chains are stretched and act as a stress chain. Some loop chains also act as a stress chain because of the transmission of stress through an entanglement of loop chains. The stress chain, including the entangled loop chains, in an ABA triblock copolymer that exhibits a body-centered cubic structure was analyzed by principal component analysis (PCA), using the physical data for the B block obtained by coarse-grained molecular dynamics simulations. Local deformation of the A domains caused by the stress chains was also analyzed by PCA of the A block. The dynamics of the stress chain strongly corresponded to the recombination of the A domains; shrinkage because of domain breakage, replacement of stress chains, and biased stress distribution as well as its time dependence were observed.
Collapse
Affiliation(s)
- Ryohei Hosoya
- Research Center for Computational Design of Advanced Functional Materials (CD-FMat), National Institute of Advanced Industrial Science and Technology (AIST), Central 2-1, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan
| | - Hiroshi Morita
- Research Center for Computational Design of Advanced Functional Materials (CD-FMat), National Institute of Advanced Industrial Science and Technology (AIST), Central 2-1, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan
- Mathematics for Advanced Materials─OIL, National Institute of Advanced Industrial Science and Technology (AIST), Sendai, Miyagi 980-8577, Japan
| |
Collapse
|
26
|
Akaike K, Shimoi Y, Miura T, Morita H, Akiyama H, Horiuchi S. Disentangling Origins of Adhesive Bonding at Interfaces between Epoxy/Amine Adhesive and Aluminum. Langmuir 2023. [PMID: 37467444 DOI: 10.1021/acs.langmuir.3c01218] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/21/2023]
Abstract
Joining metals by adhesive bonding is essential in widespread fields such as mobility, dentistry, and electronics. Although adhesive technology has grown since the 1920s, the roles of interfacial phenomena in adhesive bonding are still elusive, which hampers the on-demand selection of surface treatment and adhesive types. In the present study, we clarified how chemical interactions and mechanical interlocking governed adhesive bonding by evaluating adhesion properties at the interfaces between epoxy/amine adhesive and two kinds of Al adherends: a flat aluminum hydroxide (AlxOyHz) and technical Al plate with roughness. Spectroscopic and microscopical data demonstrate that the protonation of the amino groups in an amine hardener converts Al(OH)3 on the AlxOyHz surface to AlO(OH). The interfacial protonation results in an interfacial dipole layer with positive charges on the adhesive side, whose electrostatic interaction increases the interfacial fracture energy. The double cantilever beam tests for the flat AlxOyHz and technical Al substrates clarify that the mechanical interlocking originating from the surface roughness further increases the fracture energy. This study disentangles the roles of the chemical interactions and mechanical interlocking occurring at the epoxy adhesive/Al interface in the adhesion mechanism.
Collapse
Affiliation(s)
- Kouki Akaike
- Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology, Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Yukihiro Shimoi
- Research Center for Computational Design of Advanced Functional Materials (CD-FMat), National Institute of Advanced Industrial Science and Technology, Central 2, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan
| | - Toshiaki Miura
- Research Center for Computational Design of Advanced Functional Materials (CD-FMat), National Institute of Advanced Industrial Science and Technology, Central 2, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan
| | - Hiroshi Morita
- Research Center for Computational Design of Advanced Functional Materials (CD-FMat), National Institute of Advanced Industrial Science and Technology, Central 2, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan
| | - Haruhisa Akiyama
- Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology, Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Shin Horiuchi
- Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology, Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| |
Collapse
|
27
|
Miyamoto M, Nakamura K, Nakagawa K, Nishii N, Kawada S, Ueoka A, Asada S, Watanabe A, Morita H, Ito H. Prevalence and Treatment of Arrhythmias in Patients With Transthyretin and Light-Chain Cardiac Amyloidosis. Circ Rep 2023; 5:298-305. [PMID: 37431518 PMCID: PMC10329899 DOI: 10.1253/circrep.cr-23-0022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 05/22/2023] [Accepted: 05/29/2023] [Indexed: 07/12/2023] Open
Abstract
Background: Various types of arrhythmia are observed in patients with cardiac amyloidosis, but the prevalence of arrhythmia has not been fully investigated. This study investigated the prevalence and treatment of arrhythmias in patients with cardiac amyloidosis before the introduction of new agents for amyloidosis, such as tafamidis. Methods and Results: Of 53 patients who were histologically diagnosed with cardiac amyloidosis at 10 centers in western Japan between 2009 and 2021, 43 who were diagnosed on the basis of immunohistochemical staining were evaluated in this study. Of these 43 patients, 13 had immunoglobulin light-chain (AL) amyloidosis and 30 had transthyretin (ATTR) amyloidosis; further, 27 had atrial tachyarrhythmia, 13 had ventricular tachyarrhythmia, and 17 had bradyarrhythmia. Atrial fibrillation (AF) was the most common arrhythmia in patients with cardiac amyloidosis (n=24; 55.8%), especially among those with ATTR amyloidosis (70.0% of ATTR vs. 23.1% of AL). Eleven (25.6%) patients were treated with a cardiac implantable device. All 3 patients with pacemakers were alive at the last follow-up (median 76.7 months; interquartile range [IQR] 4.8-146.4 months). Of the 8 patients who underwent AF ablation, there was no recurrence in 6 (75%) after a median of 39.3 months (IQR 19.8-59.3 months). Conclusions: The prevalence of various arrhythmias was high in patients with cardiac amyloidosis. AF occurred most frequently in patients with cardiac amyloidosis, especially among patients with ATTR.
Collapse
Affiliation(s)
- Masakazu Miyamoto
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan
| | - Kazufumi Nakamura
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan
| | - Koji Nakagawa
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan
| | - Nobuhiro Nishii
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan
- Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan
| | - Satoshi Kawada
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan
| | - Akira Ueoka
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan
| | - Saori Asada
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan
| | - Atsuyuki Watanabe
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan
- Department of Cardiology, National Hospital Organization Okayama Medical Center Okayama Japan
| | - Hiroshi Morita
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan
- Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan
| | - Hiroshi Ito
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan
| |
Collapse
|
28
|
Wilde AAM, Amin AS, Morita H, Tadros R. Use, misuse, and pitfalls of the drug challenge test in the diagnosis of the Brugada syndrome. Eur Heart J 2023:ehad295. [PMID: 37345279 DOI: 10.1093/eurheartj/ehad295] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 04/12/2023] [Accepted: 05/05/2023] [Indexed: 06/23/2023] Open
Abstract
The diagnosis of Brugada syndrome (BrS) requires the presence of a coved (Type 1) ST segment elevation in the right precordial leads of the electrocardiogram (ECG). The dynamic nature of the ECG is well known, and in patients with suspected BrS but non-diagnostic ECG at baseline, a sodium channel blocker test (SCBT) is routinely used to unmask BrS. There is little doubt, however, that in asymptomatic patients, a drug-induced Brugada pattern is associated with a much better prognosis compared to a spontaneous Type 1 ECG. The SCBT is also increasingly used to delineate the arrhythmogenic substrate during ablation studies. In the absence of a "gold standard" for the diagnosis of BrS, sensitivity and specificity of the SCBT remain elusive. By studying patient groups with different underlying diseases, it has become clear that the specificity of the test may not be optimal. This review aims to discuss the pitfalls of the SCBT and provides some directions in whom and when to perform the test. It is concluded that because of the debated specificity and the overall very low risk for future events in asymptomatic individuals, patients should be properly selected and counseled before SCBT is performed and that SCBT should not be performed in asymptomatic patients with a Type 2 Brugada pattern and no family history of BrS or sudden death.
Collapse
Affiliation(s)
- Arthur A M Wilde
- Department of Clinical and Experimental Cardiology, Heart Center, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Room B2-256, Meibergdreef 9, Amsterdam 1105 AZ, The Netherlands
- European Reference Network for rare, low-prevalence, or complex diseases of the heart (ERN GUARD-Heart), Amsterdam, The Netherlands
| | - Ahmad S Amin
- Department of Clinical and Experimental Cardiology, Heart Center, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Room B2-256, Meibergdreef 9, Amsterdam 1105 AZ, The Netherlands
- European Reference Network for rare, low-prevalence, or complex diseases of the heart (ERN GUARD-Heart), Amsterdam, The Netherlands
| | - Hiroshi Morita
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
- Department of Cardiovascular Therapeutics, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Rafik Tadros
- Cardiovascular Genetics Center, Montreal Heart Institute, Faculty of Medicine, Université de Montréal, Montreal, Québec, Canada
| |
Collapse
|
29
|
Nugroho AE, Wong CP, Hirasawa Y, Kaneda T, Tougan T, Horii T, Hadi AHA, Morita H. Antimalarial ceramicines Q-T from Chisocheton ceramicus. J Nat Med 2023; 77:596-603. [PMID: 37162697 PMCID: PMC10171166 DOI: 10.1007/s11418-023-01706-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 04/29/2023] [Indexed: 05/11/2023]
Abstract
Ceramicines are a series of limonoids that were isolated from the bark of Malaysian Chisocheton ceramicus (Meliaceae) and were known to show various biological activity. Four new limonoids, ceramicines Q-T (1-4) were isolated from the barks of C. ceramicus, and their structures were determined on the basis of the 1D and 2D NMR analyses in combination with calculated 13C chemical shift data. Ceramicines Q-T (1-4) were established to be new limonoids with a cyclopentanone[α]phenanthren ring system with a β-furyl ring at C-17, and without a tetrahydrofuran ring like ceramicine B, which is characteristic of known ceramicines. Ceramicine R (2) exhibited potent antimalarial activity against Plasmodium falciparum 3D7 strain with IC50 value of 2.8 µM.
Collapse
Affiliation(s)
- Alfarius Eko Nugroho
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Chin Piow Wong
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Yusuke Hirasawa
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-ku, Tokyo, 142-8501, Japan.
| | - Toshio Kaneda
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Takahiro Tougan
- Department of Cellular Immunology, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Toshihiro Horii
- Department of Malaria Vaccine Development, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - A Hamid A Hadi
- Department of Chemistry, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Hiroshi Morita
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-ku, Tokyo, 142-8501, Japan.
| |
Collapse
|
30
|
Nakamura K, Morita H, Takaya Y, Saito Y, Miyoshi T, Morinaga H, Sugiyama H, Wada J, Ito H. Effects of Agalsidase Alfa Enzyme Replacement Therapy on Left Ventricular Hypertrophy on Electrocardiogram in a Female Patient with Fabry Disease. Int Heart J 2023:22-752. [PMID: 37197914 DOI: 10.1536/ihj.22-752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Fabry disease is an X-linked lysosomal storage disorder caused by defective enzyme activity of α-galactosidase A and treated with enzyme replacement therapy (ERT) with recombinant α-galactosidase. ERT reduces left ventricular mass assessed by echocardiography or magnetic resonance imaging. However, electrocardiogram changes during ERT have not been fully elucidated. In the present case, ERT with agalsidase alfa for 4 years decreased QRS voltage and negative T depth along with a reduction of left ventricular mass and wall thickness and improvement of symptoms in a female patient with Fabry disease. Long-term observation of electrocardiogram changes might be useful for determining the efficacy of ERT in this case.
Collapse
Affiliation(s)
- Kazufumi Nakamura
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
| | - Hiroshi Morita
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
- Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
| | - Yoichi Takaya
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
| | - Yukihiro Saito
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
| | - Toru Miyoshi
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
| | - Hiroshi Morinaga
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
| | - Hitoshi Sugiyama
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
- Department of Medicine, Kawasaki Medical School General Medical Center and Department of Medical Care Work, Kawasaki College of Allied Health Professions
| | - Jun Wada
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
| | - Hiroshi Ito
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
| |
Collapse
|
31
|
Hirasawa Y, Hattori R, Ohtani M, Morita H. Cryptadine C, a new C 27N 3-type Lycopodium alkaloid from Lycopodium cryptomerinum. J Nat Med 2023; 77:610-613. [PMID: 37171655 DOI: 10.1007/s11418-023-01707-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 05/03/2023] [Indexed: 05/13/2023]
Abstract
A new C27N3-type Lycopodium alkaloid consisting of two decahydroquinolines and a piperidine, cryptadine C (1) was isolated from Lycopodium cryptomerinum. The structure and relative configuration of 1, which is related to those of cryptadines A and B, lycoperine A, and hupercumine A, was elucidated on the basis of spectroscopic data. Cryptadine C showed moderate inhibitory activity against acetylcholinesterase.
Collapse
Affiliation(s)
- Yusuke Hirasawa
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-Ku, Tokyo, 142-8501, Japan.
| | - Rina Hattori
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-Ku, Tokyo, 142-8501, Japan
| | - Manami Ohtani
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-Ku, Tokyo, 142-8501, Japan
| | - Hiroshi Morita
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-Ku, Tokyo, 142-8501, Japan.
| |
Collapse
|
32
|
Morimoto Y, Morita H, Ejiri K, Mizuno T, Masuda T, Ueoka A, Asada S, Miyamoto M, Kawada S, Nakagawa K, Nishii N, Nakamura K, Ito H. Significant Delayed Activation on the Right Ventricular Outflow Tract Represents Complete Right Bundle-Branch Block Pattern in Brugada Syndrome. J Am Heart Assoc 2023; 12:e028706. [PMID: 37158059 DOI: 10.1161/jaha.122.028706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Background The appearance of complete right bundle-branch block (CRBBB) in Brugada syndrome (BrS) is associated with an increased risk of ventricular fibrillation. The pathophysiological mechanism of CRBBB in patients with BrS has not been well established. We aimed to clarify the significance of a conduction delay zone associated with arrhythmias on CRBBB using body surface mapping in patients with BrS. Methods and Results Body surface mapping was recorded in 11 patients with BrS and 8 control patients both with CRBBB. CRBBB in control patients was transiently exhibited by unintentional catheter manipulation (proximal RBBB). Ventricular activation time maps were constructed for both of the groups. We divided the anterior chest into 4 areas (inferolateral right ventricle [RV], RV outflow tract [RVOT], intraventricular septum, and left ventricle) and compared activation patterns between the 2 groups. Excitation propagated to the RV from the left ventricle through the intraventricular septum with activation delay in the entire RV in the control group (proximal RBBB pattern). In 7 patients with BrS, excitation propagated from the inferolateral RV to the RVOT with significant regional activation delay. The remaining 4 patients with BrS showed a proximal RBBB pattern with the RVOT activation delay. The ventricular activation time in the inferolateral RV was significantly shorter in patients with BrS without a proximal RBBB pattern than in control patients. Conclusions The CRBBB morphology in patients with BrS consisted of 2 mechanisms: (1) significantly delayed conduction in the RVOT and (2) proximal RBBB with RVOT conduction delay. Significant RVOT conduction delay without proximal RBBB resulted in CRBBB morphology in patients with BrS.
Collapse
Affiliation(s)
- Yoshimasa Morimoto
- Department of Cardiovascular Medicine Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences Okayama Japan
- Department of Cardiovascular Medicine Fukuyama City Hospital Hiroshima Japan
| | - Hiroshi Morita
- Department of Cardiovascular Therapeutics Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences Okayama Japan
| | - Kentaro Ejiri
- Department of Cardiovascular Medicine Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences Okayama Japan
- Department of Epidemiology Johns Hopkins Bloomberg School of Public Health Baltimore MD USA
| | - Tomofumi Mizuno
- Department of Cardiovascular Medicine Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences Okayama Japan
| | - Takuro Masuda
- Department of Cardiovascular Medicine Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences Okayama Japan
| | - Akira Ueoka
- Department of Cardiovascular Medicine Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences Okayama Japan
| | - Saori Asada
- Department of Cardiovascular Medicine Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences Okayama Japan
| | - Masakazu Miyamoto
- Department of Cardiovascular Medicine Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences Okayama Japan
| | - Satoshi Kawada
- Department of Cardiovascular Medicine Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences Okayama Japan
| | - Koji Nakagawa
- Department of Cardiovascular Medicine Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences Okayama Japan
| | - Nobuhiro Nishii
- Department of Cardiovascular Therapeutics Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences Okayama Japan
| | - Kazufumi Nakamura
- Department of Cardiovascular Medicine Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences Okayama Japan
| | - Hiroshi Ito
- Department of Cardiovascular Medicine Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences Okayama Japan
| |
Collapse
|
33
|
Hipolith MM, Khor BK, Hirasawa Y, Murugaiyah V, Lee CY, Morita H, Wong PF, Chan KL. Quassinoids from Eurycoma longifolia Jack roots and their potential inhibitory activity against human benign prostatic hyperplasia cells (BPH-1) and testosterone-induced BPH rat model. Fitoterapia 2023; 166:105468. [PMID: 36931528 DOI: 10.1016/j.fitote.2023.105468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 03/01/2023] [Accepted: 03/03/2023] [Indexed: 03/18/2023]
Abstract
Benign prostate hyperplasia (BPH) is an enlargement of the prostate gland, because of hormonal changes in aging males which contribute significantly to excessive proliferation over apoptosis of prostatic cells. The anti-proliferative and induced apoptotic activities of Eurycoma longifolia quassinoids on cancer cell lines could be promising therapeutic targets on BPH. Hitherto, no report of the quassinoids against BPH problem was available. In this study, a systematic phytochemical fractionation of the root extract, TAF2 was performed, which led to the discovery of nine previously described C20 quassinoids (1-9). Two undescribed C20 (10 and 12) and one undescribed (11) C19 quassinoids were identified by detailed NMR and HR-ESI-MS data analysis. Their absolute configurations were assigned by ECD spectral analysis. The quassinoids (1-12) were tested for inhibitory activity against the proliferation of human BPH-1 and human skin Hs27 fibroblast cells cultured in vitro. 1, 2 and 3 at 10 μM significantly reduced BPH-1 cell viability and were cytotoxic to Hs27 fibroblast cells. 2 was selected for further study of anti-BPH activity against testosterone induced BPH rats. At 5 mg/kg, 2 reduced the rat prostatic weight and prostatic index, consistent with the decrease in papillary acini number and epithelial thickness of the prostate tissues. These quassinoids may be potential anti-BPH compounds that require further studies.
Collapse
Affiliation(s)
| | - Boon-Keat Khor
- School of Pharmaceutical Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia
| | - Yusuke Hirasawa
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-ku, Tokyo 142-8501, Japan
| | - Vikneswaran Murugaiyah
- School of Pharmaceutical Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia; Centre for Drug Research, Universiti Sains Malaysia, 11800 Penang, Malaysia
| | - Chong-Yew Lee
- School of Pharmaceutical Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia
| | - Hiroshi Morita
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-ku, Tokyo 142-8501, Japan
| | - Pooi-Fong Wong
- Department of Pharmacology, Faculty of Medicine, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
| | - Kit-Lam Chan
- School of Pharmaceutical Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia.
| |
Collapse
|
34
|
Yamamoto-Hanada K, Sato M, Toyokuni K, Irahara M, Hiraide-Kotaki E, Harima-Mizusawa N, Morita H, Matsumoto K, Ohya Y. Combination of heat-killed Lactiplantibacillus plantarum YIT 0132 (LP0132) and oral immunotherapy in cow's milk allergy: a randomised controlled trial. Benef Microbes 2023; 14:17-30. [PMID: 36815492 DOI: 10.3920/bm2022.0064] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
Safer and more effective cow milk (CM)-oral immunotherapy that does not induce allergic reactions has not yet been standardised. We sought to explore the efficacy and feasibility of a combination of heat-killed Lactiplantibacillus plantarum YIT 0132 (LP0132) and oral immunotherapy for treating IgE-mediated cow milk allergy (CMA). We conducted a 24-week, double-blind, randomised (1:1), two-arm, parallel-group, placebo-controlled, phase 2 trial of LP0132 intervention for treating IgE-mediated CMA in children aged 1-18 years (n=60) from January 29, 2018 to July 12, 2019 in Tokyo, Japan. Participants were randomly assigned to the LP0132 group receiving citrus juice fermented with LP0132 or to the control group receiving citrus juice without. Both groups received low-dose slow oral immunotherapy with CM. The primary outcome was improved tolerance to CM, proven by the CM challenge test at 24 weeks. Secondary outcomes were changes in serum biomarkers of serum-specific β-lactoglobulin-IgE (sIgE) and β-lactoglobulin-IgG4 (sIgG4). Exploratory outcomes included changes in serum cytokine levels and gut microbiota composition. A total of 61 participants were included. Finally, 31 children were assigned to the LP0132 group and 30 to the control group, respectively. After the intervention, 41.4 and 37.9% of the participants in the LP0132 and control groups, respectively, showed improved tolerance to CM. In serum biomarkers after the intervention, the sIgG4 level was significantly higher, and interleukin (IL)-5 and IL-9 were significantly lower, in the LP0132 group than in the control group. In the gut microbiome, the α-diversity and Lachnospiraceae increased significantly in the LP0132 group, and Lachnospiraceae after the intervention was significantly higher in the LP0132 group than in the control group. In conclusion, low-dose oral immunotherapy with modulating gut microbiota might be a safer and more effective approach for treating cow's milk allergy.
Collapse
Affiliation(s)
- K Yamamoto-Hanada
- Allergy Center, National Center for Child Health and Development, 2-10-1 Okura, 1578535 Tokyo, Japan
| | - M Sato
- Allergy Center, National Center for Child Health and Development, 2-10-1 Okura, 1578535 Tokyo, Japan
| | - K Toyokuni
- Allergy Center, National Center for Child Health and Development, 2-10-1 Okura, 1578535 Tokyo, Japan
| | - M Irahara
- Allergy Center, National Center for Child Health and Development, 2-10-1 Okura, 1578535 Tokyo, Japan
| | - E Hiraide-Kotaki
- Yakult Central Institute for Microbiological Research, 5-11 Izumi, Kunitachi, Tokyo 186-8650, Japan
| | - N Harima-Mizusawa
- Yakult Central Institute for Microbiological Research, 5-11 Izumi, Kunitachi, Tokyo 186-8650, Japan
| | - H Morita
- Department of Allergy and Clinical Immunology, National Research Institute for Child Health and Development, 2-10-1 Okura, 1578535 Tokyo, Japan
| | - K Matsumoto
- Department of Allergy and Clinical Immunology, National Research Institute for Child Health and Development, 2-10-1 Okura, 1578535 Tokyo, Japan
| | - Y Ohya
- Allergy Center, National Center for Child Health and Development, 2-10-1 Okura, 1578535 Tokyo, Japan
| |
Collapse
|
35
|
Nakagawa K, Akagi T, Takaya Y, Miki T, Kijima Y, Nakayama R, Toh N, Nishii N, Nakamura K, Morita H, Ito H. Temporary balloon occlusion test can overestimate the risk of acute pulmonary edema after transcatheter atrial septal defect closure. Catheter Cardiovasc Interv 2023; 101:390-395. [PMID: 36640419 DOI: 10.1002/ccd.30556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 12/13/2022] [Accepted: 12/31/2022] [Indexed: 01/15/2023]
Abstract
BACKGROUND Atrial septal defect (ASD) closure can cause acute pulmonary edema. Before transcatheter closure is performed, temporary balloon occlusion test (BOT) is recommended in patients with left ventricular dysfunction to predict the risk of pulmonary edema. However, the accuracy of BOT has not been verified. This study aimed to compare hemodynamic differences between BOT and transcatheter closure. METHODS A total of 42 patients with a single ASD over age 18 years who underwent BOT before transcatheter ASD closure between October 2010 and May 2020 were analyzed. Pulmonary capillary wedge pressure (PCWP) was measured using a Swan-Ganz catheter placed in the pulmonary artery at baseline, after 10 min of BOT, and after transcatheter closure. Amplatzer septal occluder was used for all transcatheter closures. RESULTS Mean patient age was 64 ± 18 years (range, 18-78). Mean ASD diameter and pulmonary to systemic flow ratio were 18 ± 5 and 2.8 ± 1.0 mm, respectively. Mean PCWP at baseline, during BOT, and after transcatheter closure was 8.9 ± 2.9, 13.5 ± 4.2, and 9.5 ± 2.6 mmHg, respectively. The difference between BOT and after transcatheter closure values was significant (p < 0.001). During BOT, PCWP increased ≥18 mmHg in 7 patients, whereas after ASD closure, PCWP was <18 mmHg in all 7 and none developed acute pulmonary edema. CONCLUSION Temporary balloon occlusion of an ASD and transcatheter ASD closure result in different hemodynamic change. BOT overestimates increase of PCWP after transcatheter ASD closure and requires careful interpretation. Well-designed, larger studies in higher-risk patients are warranted to verify the clinical implications of BOT in more detail.
Collapse
Affiliation(s)
- Koji Nakagawa
- Department of Cardiovascular Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Teiji Akagi
- Cardiac Intensive Care Unit, Okayama University Hospital, Okayama, Japan
| | - Yoichi Takaya
- Department of Cardiovascular Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Takashi Miki
- Department of Cardiovascular Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Yasufumi Kijima
- Department of Cardiovascular Medicine, St. Luke's International Hospital, Tokyo, Japan
| | - Rie Nakayama
- Department of Cardiovascular Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Norihisa Toh
- Department of Cardiovascular Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Nobuhiro Nishii
- Department of Cardiovascular Therapeutics, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Kazufumi Nakamura
- Department of Cardiovascular Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Hiroshi Morita
- Department of Cardiovascular Therapeutics, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Hiroshi Ito
- Department of Cardiovascular Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| |
Collapse
|
36
|
Nagata Y, Watanabe R, Eichhorn C, Ohno S, Aiba T, Ishikawa T, Nakano Y, Aizawa Y, Hayashi K, Murakoshi N, Nakajima T, Yagihara N, Mishima H, Sudo T, Higuchi C, Takahashi A, Sekine A, Makiyama T, Tanaka Y, Watanabe A, Tachibana M, Morita H, Yoshiura KI, Tsunoda T, Watanabe H, Kurabayashi M, Nogami A, Kihara Y, Horie M, Shimizu W, Makita N, Tanaka T. Targeted deep sequencing analyses of long QT syndrome in a Japanese population. PLoS One 2022; 17:e0277242. [PMID: 36480497 PMCID: PMC9731492 DOI: 10.1371/journal.pone.0277242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Accepted: 10/22/2022] [Indexed: 12/13/2022] Open
Abstract
Long QT syndrome (LQTS) is one of the most common inherited arrhythmias and multiple genes have been reported as causative. Presently, genetic diagnosis for LQTS patients is becoming widespread and contributing to implementation of therapies. However, causative genetic mutations cannot be detected in about 20% of patients. To elucidate additional genetic mutations in LQTS, we performed deep-sequencing of previously reported 15 causative and 85 candidate genes for this disorder in 556 Japanese LQTS patients. We performed in-silico filtering of the sequencing data and found 48 novel variants in 33 genes of 53 cases. These variants were predicted to be damaging to coding proteins or to alter the binding affinity of several transcription factors. Notably, we found that most of the LQTS-related variants in the RYR2 gene were in the large cytoplasmic domain of the N-terminus side. They might be useful for screening of LQTS patients who had no known genetic factors. In addition, when the mechanisms of these variants in the development of LQTS are revealed, it will be useful for early diagnosis, risk stratification, and selection of treatment.
Collapse
Affiliation(s)
- Yuki Nagata
- Bioresourse Research Center, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
- Department of Human Genetics and Disease Diversity, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Ryo Watanabe
- Department of Human Genetics and Disease Diversity, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Christian Eichhorn
- Department of Human Genetics and Disease Diversity, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
- Private University of the Principality of Liechtenstein, Triesen, Liechtenstein
| | - Seiko Ohno
- Department of Bioscience and Genetics, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Takeshi Aiba
- Devision of Arrhythmia, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Taisuke Ishikawa
- Omics Research Center, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Yukiko Nakano
- Department of Cardiovascular Medicine, Hiroshima University, Hiroshima, Japan
| | - Yoshiyasu Aizawa
- Department of Cardiology, International University of Health and Welfare Narita Hospital, Narita, Japan
| | - Kenshi Hayashi
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Nobuyuki Murakoshi
- Department of Cardiology, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Tadashi Nakajima
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Nobue Yagihara
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Hiroyuki Mishima
- Department of Human Genetics, Atomic Bomb Disease Institute, Nagasaki University, Nagasaki, Japan
| | - Takeaki Sudo
- Institute of Education, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Chihiro Higuchi
- Artificial Intelligence Center for Health and Biomedical Research, National Institutes of Biomedical Innovation, Health and Nutrition, Ibaraki, Japan
| | - Atsushi Takahashi
- Department of Genomic Medicine, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Akihiro Sekine
- Department of Infection and Host Defense, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Takeru Makiyama
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yoshihiro Tanaka
- Center for Arrhythmia Research, Northwestern University Feinberg School of Medicine, Chicago, Illinois, United States of America
| | - Atsuyuki Watanabe
- Department of Cardiology, National Hospital Organization Okayama Medical Center, Okayama, Japan
| | - Motomi Tachibana
- Department of Cardiology, Sakakibara heart institute of Okayama, Okayama, Japan
| | - Hiroshi Morita
- Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Koh-ichiro Yoshiura
- Department of Human Genetics, Atomic Bomb Disease Institute, Nagasaki University, Nagasaki, Japan
- Division of Advanced Preventive Medical Sciences and Leading Medical Research Core Unit, Nagasaki Univerisity Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Tatsuhiko Tsunoda
- Laboratory for Medical Science Mathematics, Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan
- Laboratory for Medical Science Mathematics, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Hiroshi Watanabe
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Masahiko Kurabayashi
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Akihiko Nogami
- Department of Cardiology, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Yasuki Kihara
- Department of Cardiovascular Medicine, Hiroshima University, Hiroshima, Japan
| | - Minoru Horie
- Department of Cardiovascular Medicine, Shiga University of Medical Science, Otsu, Japan
| | - Wataru Shimizu
- Department of Cardiovascular Medicine, Nippon Medical School, Tokyo, Japan
| | - Naomasa Makita
- Omics Research Center, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Toshihiro Tanaka
- Bioresourse Research Center, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
- Department of Human Genetics and Disease Diversity, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
- * E-mail:
| |
Collapse
|
37
|
Eitoku T, Nishii N, Morita H, Kasahara S. A rare case of tetralogy of Fallot with catecholaminergic polymorphic ventricular tachycardia. HeartRhythm Case Rep 2022; 9:152-155. [PMID: 36970376 PMCID: PMC10030305 DOI: 10.1016/j.hrcr.2022.12.005] [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: 12/14/2022] Open
Affiliation(s)
- Takahiro Eitoku
- Department of Pediatrics, Kawasaki Medical School, Kurashiki, Japan
- Address reprint requests and correspondence: Dr Takahiro Eitoku, Department of Pediatrics, Kawasaki Medical School, 577 Matsushima, Kurashiki 701-0192, Japan.
| | - Nobuhiro Nishii
- Department of Cardiovascular therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Hiroshi Morita
- Department of Cardiovascular therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Shingo Kasahara
- Department of Cardiovascular Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| |
Collapse
|
38
|
Kaneda T, Ifadotunnikmah F, Nugroho AE, Koshikawa S, Tadahiro S, Hirasawa Y, Morita H. Calofolic Acid-A from Calophyllum scriblitifolium Bark Has Vasorelaxant Activity via Indirect PKA Activation Caused by PI-3 Kinase Inhibition in Rat Vascular Smooth Muscle Cells. J Nat Prod 2022; 85:2192-2198. [PMID: 35983865 DOI: 10.1021/acs.jnatprod.2c00502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Previously, we isolated 2R,3S,15R-calofolic acids (CAs) from Calophyllum scriblitifolium bark, which showed vasorelaxant activity on phenylephrine (PE)-precontracted rat aortic rings. Although the effect was suggested to be induced via an extracellular Ca2+-independent manner and mainly acts on vascular smooth muscle, the exact mechanism of action of CAs remained unclear. Thus, this study investigated the detailed mechanism of calofolic acid-A (CA-A) induced vasorelaxation in an aortic ring specimen using rat vascular smooth muscle cells (VSMCs). The levels of PE-induced phosphorylation on MLC Ser19 decreased in VSMCs pretreated with CA-A. CA-A also decreased the phosphorylation of MYPT1 Thr696 and MYPT1 Thr853. On the other hand, CA-A increased the PE-induced phosphorylation of MYPT1 Ser695 and MYPT1 Ser668, which are reported to be phosphorylated by a cAMP-dependent protein kinase (PKA). CA-A slightly increased PKA substrate phosphorylation in a concentration-dependent manner. Furthermore, CA-A enhanced isoproterenol (ISO)-induced cAMP accumulation and PKA substrate phosphorylation. Treatment with PI-3 kinase (PI3K) inhibitor, LY294002, enhanced ISO-induced cAMP accumulation and PKA substrate phosphorylation in the same manner as CA-A treatment. Furthermore, CA-A was found to directly inhibit PI3K enzyme activity in a dose-dependent manner. Taken together, the present study indicated that CA-A induces vasorelaxation through an indirectly activated PKA-MYPT1 pathway caused by inhibition of PI3K activity.
Collapse
Affiliation(s)
- Toshio Kaneda
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo 142-8501, Japan
| | - Farida Ifadotunnikmah
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo 142-8501, Japan
| | - Alfarius Eko Nugroho
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo 142-8501, Japan
| | - Sae Koshikawa
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo 142-8501, Japan
| | - Sasaki Tadahiro
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo 142-8501, Japan
| | - Yusuke Hirasawa
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo 142-8501, Japan
| | - Hiroshi Morita
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo 142-8501, Japan
| |
Collapse
|
39
|
Nugroho AE, Tange M, Kusakabe S, Hirasawa Y, Shirota O, Matsuno M, Mizukami H, Tougan T, Horii T, Morita H. Chukranoids A-I, isopimarane diterpenoids from Chukrasia velutina. J Nat Med 2022; 76:756-764. [PMID: 35511335 PMCID: PMC9069220 DOI: 10.1007/s11418-022-01623-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 03/19/2022] [Indexed: 11/24/2022]
Abstract
Bioactivity guided separation of Chukrasia velutina root methanolic extract led to the isolation of nine new isopimarane diterpenoids, chukranoids A-I (1-9). The absolute configuration was then assigned by comparing the experimental CD spectra and the calculated CD spectra. Chukranoids A-I (1-9) showed moderate antimalarial activity against Plasmodium falciparum 3D7 strain. It seems that conjugate system in the isopimarane skeleton may influence their antimalarial activity.
Collapse
Affiliation(s)
- Alfarius Eko Nugroho
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Masaki Tange
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Sumi Kusakabe
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Yusuke Hirasawa
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo, 142-8501, Japan
| | - Osamu Shirota
- Faculty of Pharmaceutical Sciences at Kagawa Campus, Tokushima Bunri University, 1314-1 Shido, Sanuki City, Kagawa, 769-2193, Japan
| | - Michiyo Matsuno
- The Kochi Prefectural Makino Botanical Garden, 4200-6 Godaisan, Kochi City, Kochi, 781-8125, Japan
| | - Hajime Mizukami
- The Kochi Prefectural Makino Botanical Garden, 4200-6 Godaisan, Kochi City, Kochi, 781-8125, Japan
| | - Takahiro Tougan
- Research Center for Infectious Disease Control, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Toshihiro Horii
- Department of Malaria Vaccine Development, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Hiroshi Morita
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo, 142-8501, Japan.
| |
Collapse
|
40
|
Morita H, Yoda S, Ono T, Tazumi K, Furuya T. Analysis of nanocellular foaming with nucleating agents based on coarse-grained molecular dynamics simulations. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
41
|
Takahashi M, Okawa K, Morimoto T, Tsushima R, Sudo Y, Sakamoto A, Sogo M, Ozaki M, Doi M, Morita H, Okumura K, Ito H. Impact of direct oral anticoagulant use on mortality in very old patients with non-valvular atrial fibrillation. Age Ageing 2022; 51:6625703. [PMID: 35776672 DOI: 10.1093/ageing/afac146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND the efficacy and safety of direct oral anticoagulants (DOACs) compared with that of warfarin in very old patients with non-valvular atrial fibrillation (NVAF) have been reported in terms of thromboembolisms and bleeding. However, the association of DOAC use and mortality in such patients remains unclear. OBJECTIVES this study aimed to investigate the incidence of mortality, as well as thromboembolisms and major bleeding, in very old patients with NVAF using DOACs as compared with warfarin. METHODS we conducted a single-centre historical cohort study of consecutive patients with NVAF aged ≥80 years who used oral anticoagulants. We compared the 5-year outcomes (all-cause mortality, thromboembolism, major bleeding and intracranial haemorrhage) between the DOAC and Warfarin groups. RESULTS of 1,676 patients with atrial fibrillation aged 80 years and over, 1,208 with NVAF were included. Propensity score matching provided 461 patients in each group, and the risk of all-cause mortality, thromboembolisms, major bleeding and intracranial haemorrhages was significantly lower in the DOAC group than Warfarin group (hazard ratio [95% confidence interval] for DOAC use, 0.68 [0.54-0.87], 0.31 [0.19-0.53], 0.56 [0.36-0.88], 0.23 [0.10-0.56], log-rank P = 0.002, P < 0.001, P = 0.010, P < 0.001). The mortality rate within 1 year after major bleeding was significantly lower in the DOAC group than Warfarin group (14% versus 38%, P = 0.03), however, that after a thromboembolism was similar between the two groups (33% versus 35%). CONCLUSION patients with NVAF aged ≥80 years and using DOACs had a lower mortality than those using warfarin.
Collapse
Affiliation(s)
- Masahiko Takahashi
- Department of Cardiovascular Medicine, Kagawa Prefectural Central Hospital, 1-2-1 Asahi-machi, Takamatsu, Kagawa 760-8557, Japan
| | - Keisuke Okawa
- Department of Cardiovascular Medicine, Kagawa Prefectural Central Hospital, 1-2-1 Asahi-machi, Takamatsu, Kagawa 760-8557, Japan
| | - Takeshi Morimoto
- Department of Clinical Epidemiology, Hyogo College of Medicine, 1-1 Mukogawa, Nishinomiya, Hyogo 663-8501, Japan
| | - Ryu Tsushima
- Department of Cardiovascular Medicine, Kagawa Prefectural Central Hospital, 1-2-1 Asahi-machi, Takamatsu, Kagawa 760-8557, Japan
| | - Yuya Sudo
- Department of Cardiovascular Medicine, Kagawa Prefectural Central Hospital, 1-2-1 Asahi-machi, Takamatsu, Kagawa 760-8557, Japan
| | - Ai Sakamoto
- Department of Cardiovascular Medicine, Kagawa Prefectural Central Hospital, 1-2-1 Asahi-machi, Takamatsu, Kagawa 760-8557, Japan
| | - Masahiro Sogo
- Department of Cardiovascular Medicine, Kagawa Prefectural Central Hospital, 1-2-1 Asahi-machi, Takamatsu, Kagawa 760-8557, Japan
| | - Masatomo Ozaki
- Department of Cardiovascular Medicine, Kagawa Prefectural Central Hospital, 1-2-1 Asahi-machi, Takamatsu, Kagawa 760-8557, Japan
| | - Masayuki Doi
- Department of Cardiovascular Medicine, Kagawa Prefectural Central Hospital, 1-2-1 Asahi-machi, Takamatsu, Kagawa 760-8557, Japan
| | - Hiroshi Morita
- Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Okayama, Okayama 700-8558, Japan
| | - Ken Okumura
- Division of Cardiology, Saiseikai Kumamoto Hospital, 5-3-1 Chikami, Minami-ku, Kumamoto 861-4193, Japan
| | - Hiroshi Ito
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Okayama, Okayama 700-8558, Japan
| |
Collapse
|
42
|
Nakamura K, Miyoshi T, Akagi S, Toh N, Saito Y, Takaya Y, Yoshida M, Nakagawa K, Kawada S, Toda H, Miki T, Nakayama R, Yokohama F, Ichikawa K, Yoshida M, Taniyama M, Nishii N, Akagi T, Morita H, Ito H. Overview of the 86 th Annual Scientific Meeting of the Japanese Circulation Society - Cardiology Spreading Its Wings. Circ J 2022; 86:1312-1318. [PMID: 35768227 DOI: 10.1253/circj.cj-22-0349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The 86thAnnual Scientific Meeting of the Japanese Circulation Society was held in a web-based format on March 11-13, 2022. In accordance with the internationalization policy of the JCS, the meeting was held with the Asian Pacific Society of Cardiology Congress 2022. The main theme was "Cardiology Spreading its Wings". The number of patients with heart failure and other cardiovascular diseases is increasing dramatically, and the fields dealt with by cardiovascular medicine are also greatly expanding. This conference was both intellectually satisfying and exciting for all participants, who numbered over 14,900. The meeting was completed with great success, and the enormous amount of cooperation and support from all involved was greatly appreciated.
Collapse
Affiliation(s)
- Kazufumi Nakamura
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
| | - Toru Miyoshi
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
| | - Satoshi Akagi
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
| | - Norihisa Toh
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
| | - Yukihiro Saito
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
| | - Yoichi Takaya
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
| | - Masatoki Yoshida
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
| | - Koji Nakagawa
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
| | - Satoshi Kawada
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
| | - Hironobu Toda
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
| | - Takashi Miki
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
| | - Rie Nakayama
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
| | - Fumi Yokohama
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
| | - Keishi Ichikawa
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
| | - Masashi Yoshida
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
| | - Makiko Taniyama
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences.,Department of General Medicine, Tamano Division, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
| | - Nobuhiro Nishii
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences.,Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
| | - Teiji Akagi
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
| | - Hiroshi Morita
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences.,Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
| | - Hiroshi Ito
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
| |
Collapse
|
43
|
Amioka N, Takaya Y, Nakamura K, Kondo M, Akazawa K, Ohno Y, Ichikawa K, Nakayama R, Saito Y, Akagi S, Miyoshi T, Yoshida M, Morita H, Ito H. Impact of shear wave dispersion slope analysis for assessing the severity of myocarditis. Sci Rep 2022; 12:8776. [PMID: 35610503 PMCID: PMC9130270 DOI: 10.1038/s41598-022-12935-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 05/17/2022] [Indexed: 12/19/2022] Open
Abstract
This study aimed to elucidate the utility of a novel ultrasound-based technique, shear wave dispersion slope (SWDS) analysis, which estimates tissue viscosity, for evaluating the severity of myocardial inflammation. Experimental autoimmune myocarditis (EAM) at different disease phases [3-week (acute phase): n = 10, 5-week (subacute phase): n = 9, and 7-week (late phase): n = 11] were developed in male Lewis rats. SWDS was measured in the right and the left ventricular free walls (RVFW and LVFW) under a retrograde perfusion condition. Histological myocardial inflammation was evaluated by CD68 staining. The accumulation of CD68-positive cells was severe in the myocardium of the EAM 3-week group. The median (interquartile range) SWDS of RVFW was significantly higher in the EAM 3-week group [9.9 (6.5-11.0) m/s/kHz] than in the control group [5.4 (4.5-6.8) m/s/kHz] (P = 0.034). The median SWDS of LVFW was also significantly higher in the EAM 3-week group [8.1 (6.4-11.0) m/s/kHz] than in the control group [4.4 (4.2-4.8) m/s/kHz] (P = 0.003). SWDS and the percentage of CD68-positive area showed a significant correlation in RVFW (R2 = 0.64, P < 0.001) and LVFW (R2 = 0.73, P < 0.001). This study showed that SWDS was elevated in ventricular walls with acute inflammation and also significantly correlated with the degree of myocardial inflammation. These results suggest the potential of SWDS in estimating the histological severity of acute myocarditis.
Collapse
Affiliation(s)
- Naofumi Amioka
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1, Shikata-cho, Kita-ku, Okayama, 700-8558, Japan.
| | - Yoichi Takaya
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1, Shikata-cho, Kita-ku, Okayama, 700-8558, Japan.
| | - Kazufumi Nakamura
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1, Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Megumi Kondo
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1, Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Kaoru Akazawa
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1, Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Yuko Ohno
- Kawasaki University of Medical Welfare, Okayama, Japan
| | - Keishi Ichikawa
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1, Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Rie Nakayama
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1, Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Yukihiro Saito
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1, Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Satoshi Akagi
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1, Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Toru Miyoshi
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1, Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Masashi Yoshida
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1, Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Hiroshi Morita
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1, Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Hiroshi Ito
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1, Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| |
Collapse
|
44
|
Saito Y, Nakamura K, Yoshida M, Sugiyama H, Akagi S, Miyoshi T, Morita H, Ito H. Enhancement of pacing function by HCN4 overexpression in human pluripotent stem cell-derived cardiomyocytes. Stem Cell Res Ther 2022; 13:141. [PMID: 35365232 PMCID: PMC8973792 DOI: 10.1186/s13287-022-02818-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Accepted: 03/20/2022] [Indexed: 11/10/2022] Open
Abstract
Background The number of patients with bradyarrhythmia and the number of patients with cardiac pacemakers are increasing with the aging population and the increase in the number of patients with heart diseases. Some patients in whom a cardiac pacemaker has been implanted experience problems such as pacemaker infection and inconvenience due to electromagnetic interference. We have reported that overexpression of HCN channels producing a pacemaker current in mouse embryonic stem cell-derived cardiomyocytes showed enhanced pacing function in vitro and in vivo. The aim of this study was to determine whether HCN4 overexpression in human induced pluripotent stem cell-derived cardiomyocytes (iPSC-CMs) can strengthen the pacing function of the cells. Methods Human HCN4 was transduced in the AAVS1 locus of human induced pluripotent stem cells by nucleofection and HCN4-overexpressing iPSC-CMs were generated. Gene expression profiles, frequencies of spontaneous contraction and pacing abilities of HCN4-overexpressing and non-overexpressing iPSC-CMs in vitro were compared. Results HCN4-overexpressing iPSC-CMs showed higher spontaneous contraction rates than those of non-overexpressing iPSC-CMs. They responded to an HCN channel blocker and β adrenergic stimulation. The pacing rates against parent iPSC line-derived cardiomyocytes were also higher in HCN4-overexpressing iPSC-CMs than in non-overexpressing iPSC-CMs. Conclusions Overexpression of HCN4 showed enhancement of If current, spontaneous firing and pacing function in iPSC-CMs. These data suggest this transgenic cell line may be useful as a cardiac pacemaker. Supplementary Information The online version contains supplementary material available at 10.1186/s13287-022-02818-y.
Collapse
Affiliation(s)
- Yukihiro Saito
- Department of Cardiovascular Medicine, Okayama University Hospital, Okayama, Japan.
| | - Kazufumi Nakamura
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine, 2-5-1 Shikata-cho, 700-8558, Kita-ku, Okayama, Japan.
| | - Masashi Yoshida
- Department of Chronic Kidney Disease and Cardiovascular Disease, Dentistry, and Pharmaceutical Science, Okayama University Graduate School of Medicine, Okayama, Japan
| | - Hiroki Sugiyama
- Department of Internal Medicine, Okayama Saiseikai General Hospital, Okayama, Japan
| | - Satoshi Akagi
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine, 2-5-1 Shikata-cho, 700-8558, Kita-ku, Okayama, Japan
| | - Toru Miyoshi
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine, 2-5-1 Shikata-cho, 700-8558, Kita-ku, Okayama, Japan
| | - Hiroshi Morita
- Department of Cardiovascular Therapeutics, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine, Okayama, Japan
| | - Hiroshi Ito
- Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine, 2-5-1 Shikata-cho, 700-8558, Kita-ku, Okayama, Japan
| |
Collapse
|
45
|
Nishimoto T, Nishii N, Asada S, Nakagawa K, Morita H, Ito H. Ablation for unmappable ventricular tachycardia in a patient with complete transposition of the great arteries who underwent Rastelli repair. J Cardiol Cases 2022; 25:218-224. [DOI: 10.1016/j.jccase.2021.09.012] [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] [Received: 06/11/2021] [Revised: 09/06/2021] [Accepted: 09/27/2021] [Indexed: 10/20/2022] Open
|
46
|
Ueoka A, Nagase S, Nakagawa K, Morita H, Ito H. Intermittent orthodromic capture of the earliest activation site during atrial pacing in a case with reentrant atrial tachycardia originating from the atrioventricular node vicinity. J Arrhythm 2022; 38:473-477. [PMID: 35785376 PMCID: PMC9237296 DOI: 10.1002/joa3.12702] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Revised: 02/26/2022] [Accepted: 03/13/2022] [Indexed: 11/23/2022] Open
Affiliation(s)
- Akira Ueoka
- Department of Cardiovascular Medicine Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences Okayama Japan
| | - Satoshi Nagase
- Department of Advanced Arrhythmia and Translational Medical Science National Cerebral and Cardiovascular Center Suita Japan
| | - Koji Nakagawa
- Department of Cardiovascular Medicine Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences Okayama Japan
| | - Hiroshi Morita
- Department of Cardiovascular Therapeutics Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences Okayama Japan
| | - Hiroshi Ito
- Department of Cardiovascular Medicine Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences Okayama Japan
| |
Collapse
|
47
|
Kawano S, Imai T, Sakamoto T, Yamamoto S, Baba T, Sato E, Kitahashi M, Tatsumi T, Miura G, Niizawa T, Sakamoto T, Yamakiri K, Yamashita T, Otsuka H, Sameshima S, Yoshinaga N, Sonoda S, Hirakata A, Koto T, Inoue M, Hirota K, Itoh Y, Orihara T, Emoto Y, Sano M, Takahashi H, Tokizawa R, Yamashita H, Nishitsuka K, Kaneko Y, Nishi K, Yoshida A, Ono S, Hirokawa H, Sogawa K, Omae T, Ishibazawa A, Kishi S, Akiyama H, Matsumoto H, Mukai R, Morimoto M, Nakazawa M, Suzuki Y, Kudo T, Adachi K, Ishida S, Noda K, Kase S, Mori S, Ando R, Saito M, Suzuki T, Takahashi K, Nagai Y, Nakauchi T, Yamada H, Kusaka S, Tsujioka D, Tsujikawa A, Suzuma K, Ishibashi T, Sonoda KH, Ikeda Y, Kohno R, Keijiro Ishikawa, Kondo M, Kozawa M, Kitaoka T, Tsuiki E, Ogura Y, Yoshida M, Morita H, Kato A, Hirano Y, Sugitani K, Terasaki H, Iwase T, Ito Y, Ueno S, Kaneko H, Nonobe N, Kominami T, Azuma N, Yokoi T, Shimada H, Nakashizuka H, Hattori T, Shinojima A, Kutagawa Y, Shiraga F, Morizane Y, Kimura S, Ikeda T, Kida T, Sato T, Fukumoto M, Emi K, Nakashima H, Ohji M, Kakinoki M, Sawada O, Takeuchi S, Tanaka S, Iida T, Koizumi H, Maruko I, Hasegawa T, Kogure A, Iijima H, Oshiro T, Tateno Y, Kikushima W, Sugiyama A, Yoneyama S, Kadonosono K, Sato S, Yamane S. Differences in primary retinal detachment surgery conducted on holidays and workdays analyzed using the Japan Retinal Detachment Registry. Jpn J Ophthalmol 2022; 66:271-277. [DOI: 10.1007/s10384-022-00911-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Accepted: 01/28/2022] [Indexed: 10/18/2022]
|
48
|
Matsuura S, Shibazaki K, Uchida R, Imai Y, Mukoyama T, Shibata S, Morita H. Sarcopenia is associated with the Geriatric Nutritional Risk Index in elderly patients with poorly controlled type-2 diabetic mellitus. J Diabetes Investig 2022; 13:1366-1373. [PMID: 35290727 PMCID: PMC9340875 DOI: 10.1111/jdi.13792] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 03/06/2022] [Accepted: 03/13/2022] [Indexed: 11/28/2022] Open
Abstract
Aims/Introduction Diabetes and sarcopenia have a two‐way relationship with each other with advanced age. Additionally, malnutrition is correlated with a higher risk of sarcopenia in elderly patients. This study evaluated the association between sarcopenia and geriatric nutritional risk index (GNRI) in elderly patients with type 2 diabetes mellitus. Materials and Methods Patients with type 2 diabetes mellitus aged ≥60 years were recruited from June 2018 to August 2020. This study analyzed 234 patients, who completed a physical performance test required for the diagnosis of sarcopenia. To investigate the effect of GNRI on sarcopenia, logistic regression analyses was used. Results Patients with sarcopenia were significantly older with a lower body mass index (BMI) and GNRI compared with normal patients. The GNRI showed a positive correlation with the skeletal muscle index (SMI) and handgrip strength (SMI: R = 0.486, P < 0.001 for male; R = 0.589, P < 0.001 for female, handgrip strength: R = 0.470, P < 0.001 for male, R = 0.364, P < 0.001 for female). In the multivariate logistic regression model, a higher GNRI was associated with a lower risk of sarcopenia in older men and women with diabetes (adjusted odds ratio [OR], 0.892; 95% confidence interval [CI], 0.839–0.948 for male; adjusted OR, 0.928; 95% CI, 0.876–0.982 for female). One year of diabetes treatment improved the GNRI in the sarcopenia group with type 2 diabetes mellitus. Conclusions A low GNRI was associated with an increased risk of sarcopenia in elderly patients with type 2 diabetes mellitus. Treatment with glucose‐lowering drugs improved the GNRI in the sarcopenia group.
Collapse
Affiliation(s)
- Shun Matsuura
- Division of Diabetes Endocrinology medicine, Fujieda Municipal General Hospital, 4-1-11, Surugadai, Fujieda, Shizuoka, 426-8677, Japan.,Division of Respiratory Internal medicine, Fujieda Municipal General Hospital, 4-1-11, Surugadai, Fujieda, Shizuoka, 426-8677, Japan
| | - Koji Shibazaki
- Division of Diabetes Endocrinology medicine, Fujieda Municipal General Hospital, 4-1-11, Surugadai, Fujieda, Shizuoka, 426-8677, Japan
| | - Reiko Uchida
- Division of Diabetes Endocrinology medicine, Fujieda Municipal General Hospital, 4-1-11, Surugadai, Fujieda, Shizuoka, 426-8677, Japan
| | - Yukiko Imai
- Division of Diabetes Endocrinology medicine, Fujieda Municipal General Hospital, 4-1-11, Surugadai, Fujieda, Shizuoka, 426-8677, Japan
| | - Takuya Mukoyama
- Division of Diabetes Endocrinology medicine, Fujieda Municipal General Hospital, 4-1-11, Surugadai, Fujieda, Shizuoka, 426-8677, Japan
| | - Shoko Shibata
- Division of Diabetes Endocrinology medicine, Fujieda Municipal General Hospital, 4-1-11, Surugadai, Fujieda, Shizuoka, 426-8677, Japan
| | - Hiroshi Morita
- Division of Diabetes Endocrinology medicine, Fujieda Municipal General Hospital, 4-1-11, Surugadai, Fujieda, Shizuoka, 426-8677, Japan
| |
Collapse
|
49
|
Kato A, Yasukawa T, Sugita I, Yoshida M, Nozaki M, Hirano Y, Kondo J, Abe T, Sugita K, Okita T, Morita H, Takase N, Ogura Y. Mental Status and Feasibility of an Intravitreal Ranibizumab Treat-and-Extend Regimen in Patients with Neovascular Age-Related Macular Degeneration. Adv Ther 2022; 39:1403-1416. [PMID: 35112307 DOI: 10.1007/s12325-022-02052-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Accepted: 01/17/2022] [Indexed: 11/29/2022]
Abstract
INTRODUCTION Anti-vascular endothelial growth factor (VEGF) therapy is the first-choice treatment for neovascular age-related macular degeneration (nvAMD); however, patients often are burdened physically, financially, and mentally. We investigated the relationship between mental status and feasibility of an intravitreal ranibizumab treat-and-extend (TAE) regimen for nvAMD. METHODS In this prospective, multicenter study, 75 patients with nvAMD received ranibizumab intravitreally in a TAE regimen. After two monthly injections, the injection intervals were extended step-by-step to 6, 8, 12, and 16 weeks in eyes with dry maculas on optical coherence tomography (OCT) and, if exudation persisted or relapsed, shortened by one step. The best corrected visual acuity (BCVA) measurement and OCT were performed at baseline and on the same days of the scheduled injections. At baseline, all patients completed a survey, the Hospital Anxiety and Depression Scale (HADS), regarding mental burden. At week 52, patients on the TAE regimen for 1 year completed the HADS and a questionnaire designated to assess treatment-associated mental status. RESULTS Fifty-one patients (68%) completed the 1-year TAE regimen; 24 eyes (32%) discontinued the TAE regimen because of the rescue treatment, difficulty in completing clinical visits, or financial burden. In 51 eyes on the TAE regimen for 1 year, the mean BCVAs improved from 64.3 letters at baseline to 71.6 letters at week 52. The mean anxiety and depression scores on HADS decreased significantly (p < 0.01) after the 1-year treatment. Women tended to have higher anxiety scores, possibly associated with fear of injection and recurrence, while some men had higher depression scores potentially associated with financial burden, difficulty in completing clinical visits, and subsequent interruption of the TAE regimen especially in eyes with low treatment efficacy. CONCLUSIONS A TAE regimen of intravitreal ranibizumab injections preserves vision in eyes with nvAMD and reduces mental burden associated with disease relapse. TRIAL REGISTRATION This clinical study was registered retrospectively on December 22, 2014 with the ClinicalTrials.gov identifier NCT02321839.
Collapse
Affiliation(s)
- Aki Kato
- Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
- Department of Ophthalmology and Visual Science, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi, 467-8601, Japan.
| | - Tsutomu Yasukawa
- Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | | | - Munenori Yoshida
- Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Miho Nozaki
- Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Yoshio Hirano
- Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | | | | | | | | | - Hiroshi Morita
- Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Noriaki Takase
- Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Yuichiro Ogura
- Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| |
Collapse
|
50
|
Yamanaka S, Morikawa K, Morita H, Huh JY, Yamamura O. Calibration-Free Cuffless Blood Pressure Estimation Based on a Population With a Diverse Range of Age and Blood Pressure. Front Med Technol 2022; 3:695356. [PMID: 35047937 PMCID: PMC8757748 DOI: 10.3389/fmedt.2021.695356] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 06/30/2021] [Indexed: 11/23/2022] Open
Abstract
This study presents a new blood pressure (BP) estimation algorithm utilizing machine learning (ML). A cuffless device that can measure BP without calibration would be precious for portability, continuous measurement, and comfortability, but unfortunately, it does not currently exist. Conventional BP measurement with a cuff is standard, but this method has various problems like inaccurate BP measurement, poor portability, and painful cuff pressure. To overcome these disadvantages, many researchers have developed cuffless BP estimation devices. However, these devices are not clinically applicable because they require advanced preparation before use, such as calibration, do not follow international standards (81060-1:2007), or have been designed using insufficient data sets. The present study was conducted to combat these issues. We recruited 127 participants and obtained 878 raw datasets. According to international standards, our diverse data set included participants from different age groups with a wide variety of blood pressures. We utilized ML to formulate a BP estimation method that did not require calibration. The present study also conformed to the method required by international standards while calculating the level of error in BP estimation. Two essential methods were applied in this study: (a) grouping the participants into five subsets based on the relationship between the pulse transit time and systolic BP by a support vector machine ensemble with bagging (b) applying the information from the wavelet transformation of the pulse wave and the electrocardiogram to the linear regression BP estimation model for each group. For systolic BP, the standard deviation of error for the proposed BP estimation results with cross-validation was 7.74 mmHg, which was an improvement from 17.05 mmHg, as estimated by the conventional pulse-transit-time-based methods. For diastolic BP, the standard deviation of error was 6.42 mmHg for the proposed BP estimation, which was an improvement from 14.05mmHg. The purpose of the present study was to demonstrate and evaluate the performance of the newly developed BP estimation ML method that meets the international standard for non-invasive sphygmomanometers in a population with a diverse range of age and BP.
Collapse
Affiliation(s)
- Syunsuke Yamanaka
- Department of Emergency Medicine, General Internal Medicine, University of Fukui Hospital, Fukui, Japan
| | | | - Hiroshi Morita
- Department of Emergency Medicine, General Internal Medicine, University of Fukui Hospital, Fukui, Japan
| | - Ji Young Huh
- Emergency and Critical Care Center, Kobe City Medical Center General Hospital, Kobe, Japan
| | - Osamu Yamamura
- Second Department of Internal Medicine, University of Fukui Hospital, Fukui, Japan
| |
Collapse
|