著者

Takeshi Aiba Kohei Ishibashi Kazuko Hattori Mitsuru Wada Nobuhiko Ueda Yuichiro Miyazaki Akinori Wakamiya Kenichiro Yamagata Yuko Inoue Koji Miyamoto Satoshi Nagase Kengo Kusano

出版者

The Japanese Circulation Society

雑誌

Circulation Journal (ISSN:13469843)

巻号頁・発行日

pp.CJ-21-0515, (Released:2021-07-17)

被引用文献数

6

著者

Nobuhiko Ueda Takashi Noda Koshiro Kanaoka Yuichiro Miyazaki Akinori Wakamiya Kenzaburo Nakajima Tsukasa Kamakura Mitsuru Wada Kenichiro Yamagata Kohei Ishibashi Yuko Inoue Koji Miyamoto Satoshi Nagase Takeshi Aiba Hideaki Kanzaki Chisato Izumi Teruo Noguchi Satoshi Yasuda Kengo Kusano

出版者

The Japanese Circulation Society

雑誌

Circulation Journal (ISSN:13469843)

巻号頁・発行日

pp.CJ-23-0547, (Released:2023-12-05)

参考文献数

27

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Background: Atrial tachyarrhythmias (ATAs) are reportedly associated with ventricular arrhythmias (VAs). However, little is known about the association between ATA duration and the risk of VA. We investigated the relationship between ATA duration and subsequent VA in patients with a cardiac resynchronization therapy defibrillator (CRT-D).Methods and Results: We investigated associations between the longest ATA duration during the first year after cardiac resynchronization therapy (CRT) implantation and VA and VA relevant to ATA (VAATA) in 160 CRT-D patients. ATAs occurred in 63 patients in the first year. During a median follow-up of 925 days from 1 year after CRT implantation, 40 patients experienced 483 VAs. Kaplan-Meier analysis showed a significantly higher risk of VA in patients with than without ATA in the first year (log rank P=0.0057). Hazard ratios (HR) of VA (HR 2.36, 2.10, and 3.04 for ATA >30s, >6 min and >24 h, respectively) and only VAATA (HR 4.50, 5.59, and 11.79 for ATA >30s, >6 min and >24 h, respectively) increased according to the duration of ATA. In multivariate analysis, ATA >24 h was an independent predictor of subsequent VA (HR 2.42; P=0.02).Conclusions: Patients with ATA >24 h in the first year after CRT had a higher risk of subsequent VA and VAATA. The risk of VA, including VAATA, increased with the longest ATA duration.

著者

Yusaku Matsumoto Hayato Kizaki Yuki Ikeda Shohei Nakamura Shinya Kina Takanori Nagai Takafumi Nasu Koji Miyamoto Satoko Hori

出版者

International Research and Cooperation Association for Bio & Socio-Sciences Advancement

雑誌

Drug Discoveries & Therapeutics (ISSN:18817831)

巻号頁・発行日

pp.2021.01102, (Released:2021-12-30)

参考文献数

7

被引用文献数

4

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Japan has an ageing population and geographical impediments to healthcare access, so an experimental trial of telepharmacy has recently been implemented in remote islands or remote areas of Japan prior to the formal implementation. This exploratory study was conducted to understand patients’ perspectives on telepharmacy in a mountainous depopulated area away from urban areas of Japan. Semi-structured interviews were conducted with four elderly patients, who were all of the patients receiving telepharmacy in Toyone village, Japan, at the time of the survey. The transcribed interview data were qualitatively analyzed by coding and categorization. The subjects thought telepharmacy would be advantageous to overcome poor access to a clinic and to improve convenience in processes ranging from medical examination to obtaining prescribed medicines. However, they pointed out the low digital literacy of the elderly. Also, they had low expectations for pharmacists, because they had previously had no relationship with pharmacists due to lack of pharmacies in the area. To promote telepharmacy, efforts to eliminate resistance to smartphones and to provide support for smartphone operations are needed among the elderly. Work is also needed to establish how pharmacists should best be involved in patient care and health support in remote areas. Our findings suggest that telepharmacy is useful in remote areas of Japan, but in locations where there is no existing relationship with pharmacists, it would be desirable for pharmacists to be actively involved with the community to maximize its effectiveness.

著者

Kengo Kusano Nobuyoshi Sugishita Masaharu Akao Hikari Tsuji Kunihiko Matsui Shinya Hiramitsu Yutaka Hatori Hironori Odakura Hiroyuki Kamada Koji Miyamoto Hisao Ogawa

出版者

The Japanese Circulation Society

雑誌

Circulation Journal (ISSN:13469843)

巻号頁・発行日

pp.CJ-20-1244, (Released:2021-04-02)

参考文献数

23

被引用文献数

4

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Background:Direct oral anticoagulants have become a standard therapy for non-valvular atrial fibrillation (NVAF). However, little is known about their effectiveness/safety when prescribed by general practitioners to treat high-risk populations such as the elderly, those who are frail or have cognitive dysfunction.Methods and Results:In this multicenter, prospective study, a total of 5,717 NVAF patients (mean age 73.9 years) receiving rivaroxaban were registered by general practitioners, with a maximum 3-year follow up (mean 2.0±0.5 years). The primary endpoint was a composite of stroke and systemic embolism (SE). The annual incidence (per 100 person-years) of stroke/SE was 1.23% and for major bleeding, it was 0.63%. Multivariate analyses identified age ≥75 years (hazard ratio [HR]; 2.67, P<0.001) and history of ischemic stroke (HR; 1.89, P=0.005) as significant risk factors of stroke/SE, with history of major bleeding (HR; 14.9, P<0.001) and warfarin use (HR; 2.15, P=0.002) as risk factors for major bleeding events. Neither cognitive dysfunction, defined by the receipt of anti-dementia medications, nor frailty, evaluated by the classification of the Japanese Long-term Care Insurance system, correlated with stroke/SE or major bleeding events.Conclusions:The low incidence of adverse events, including stroke/SE and bleeding, in patients prescribed rivaroxaban by general practitioners supports its use as a safe and efficacious treatment in the standard clinical care of high-risk patient populations.

著者

Tomomi Nagayama Satoshi Nagase Tsukasa Kamakura Mitsuru Wada Kohei Ishibashi Yuko Y. Inoue Koji Miyamoto Takashi Noda Takeshi Aiba Hiroshi Takaki Masaru Sugimachi Wataru Shimizu Teruo Noguchi Satoshi Yasuda Shiro Kamakura Kengo Kusano

出版者

The Japanese Circulation Society

雑誌

Circulation Journal (ISSN:13469843)

巻号頁・発行日

pp.CJ-18-0643, (Released:2019-01-12)

参考文献数

38

被引用文献数

7

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Background: Spontaneous type 1 electrocardiogram (ECG) in the right precordial lead is a dominant predictor of ventricular fibrillation (VF) in Brugada syndrome (BrS). In some BrS patients with VF, however, spontaneous type 1 ECG is undetectable, even in repeated ECG and immediately after VF. This study investigated differences between BrS patients with spontaneous or drug-induced type 1 ECG. Methods and Results: We evaluated 15 BrS patients with drug-induced (D-BrS) and 29 with spontaneous type 1 ECG (SP-BrS). All patients had had a previous VF episode. In each D-BrS patient, ECG was recorded more than 15 times (mean, 46±34) during 7.2±5.1 years of follow-up. Age and family history were comparable between groups. Inferolateral early repolarization (ER) was observed in 13 D-BrS (87%) at least once but in only 3 SP-BrS (10%, P<0.01). Immediately after VF, inferolateral ER was accentuated in 9 of 10 D-BrS, while type 1 ECG was accentuated in 12 of 16 SP-BrS. Fragmented QRS in the right precordial lead and aVR sign were absent in D-BrS but present in 20 (69%, P<0.01) and 11 (38%, P<0.01) SP-BrS, respectively. There was no prognostic difference between groups. Conclusions: Although having similar clinical profiles, there are obvious ECG differences between VF-positive BrS patients with spontaneous or drug-induced type 1 ECG. The inferolateral lead rather than the right precordial lead on ECG may be particularly crucial in some BrS patients.

著者

Takafumi SHIMIZU Koji MIYAMOTO Kanako MIYAMOTO Eiichi MINAMI Yoko NISHIZAWA Moritoshi IINO Hideaki NOJIRI Hisakazu YAMANE Kazunori OKADA

出版者

(社)日本農芸化学会

雑誌

Bioscience, Biotechnology, and Biochemistry (ISSN:09168451)

巻号頁・発行日

vol.77, no.7, pp.1556-1564, 2013-07-23 (Released:2013-07-23)

参考文献数

41

被引用文献数

51

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Jasmonate plays key roles in plant growth and stress responses, as in defense against pathogen attack. Jasmonoyl-isoleucine (JA-Ile), a major active form of jasmonates, is thought to play a pivotal role in plant defense responses, but the involvement of JA-Ile in rice defense responses, including phytoalexin production, remains largely unknown. Here we found that OsJAR1 contributes mainly to stress-induced JA-Ile production by the use of an osjar1 Tos17 mutant. The osjar1 mutant was impaired in JA-induced expression of JA-responsive genes and phytoalexin production, and these defects were restored genetically. Endogenous JA-Ile was indispensable to the production of a flavonoid phytoalexin, sakuranetin, but not to that of diterpenoid phytoalexins in response to heavy metal stress and the rice blast fungus. The osjar1 mutant was also found to be more susceptible to the blast fungus than the parental wild type. These results suggest that JA-Ile production makes a contribution to rice defense responses with a great impact on stress-induced sakuranetin production.

著者

Hiroyuki Kamada Kazuki Mori Nobuhiko Ueda Akinori Wakamiya Kenzaburo Nakajima Tsukasa Kamakura Mitsuru Wada Kohei Ishibashi Kenichiro Yamagata Yuko Inoue Koji Miyamoto Satoshi Nagase Takashi Noda Chisato Izumi Teruo Noguchi Kengo Kusano Takeshi Aiba

出版者

International Heart Journal Association

雑誌

International Heart Journal (ISSN:13492365)

巻号頁・発行日

vol.63, no.5, pp.828-836, 2022-09-30 (Released:2022-09-30)

参考文献数

29

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The efficacy of direct current (DC) cardioversion before catheter ablation (CA) for persistent atrial fibrillation (PerAF) patients remains controversial. We hypothesized that maintenance of sinus rhythm (SR) by pre-ablation DC cardioversion may predict the outcome of CA in patients with PerAF. A total of 383 PerAF patients with no or mild symptoms (EHRA I/II) who had undergone DC cardioversion before CA (301 males, 65 ± 10 years old, mean atrial fibrillation (AF) duration: 25 ± 47 months) were retrospectively enrolled. Whether or not SR was maintained at least 24 hour after DC cardioversion, patients were divided into two groups, namely, the DC-SR group and DC-AF group, and then all were followed until AF recurrence after CA. After DC cardioversion, 281 (73%) patients were categorized into the DC-SR group, and 102 (27%) were categorized into the DC-AF group. A total of 195 patients underwent CA at an average of 83 (54-145) days after DC cardioversion, including 161 (83%) in the DC-SR group and 34 (17%) in the DC-AF group. During follow-up (median: 15 [10-25] months), the number of patients who were free from AF was significantly higher in the DC-SR group compared with the DC-AF group (61.5% versus 38.3%, P < 0.0001). Multivariate analysis revealed that the DC-SR group (hazard ratio [HR]: 0.45, 95% confidence interval [CI]: 0.21-0.99, P = 0.047) and age at first AF diagnosis (HR: 0.95, 95% CI: 0.91-1.00, P = 0.039) were the independent predictors for being AF-free after CA. In conclusion, the 24-hour rhythm outcome of pre-ablation DC cardioversion and age at first AF diagnosis may predict the recurrence of AF after CA in patients with PerAF.