Kyushu University Academic Staff Educational and Research Activities Database
List of Papers
Koji Todaka Last modified date:2023.11.27

Professor / Center for Clinical and Translational Research / Center for Clinical and Translational Research(CCTR) / Kyushu University Hospital


Papers
1. Takahiro Uchida, Fumiaki Ikeno, Koji Ikeda, Yuka Suzuki, Koji Todaka, Hiroyoshi Yokoi, Gary Thompson, Mitchel Krucoff, Shigeru Saito, Global cardiovascular device innovation: Japan-USA synergies - Harmonization by doing (HBD) program, a consortium of regulatory agencies, medical device industry, and academic institutions, Circulation Journal, 10.1253/circj.CJ-12-1431, 77, 7, 1714-1718, 2013.07, Background: Global medical devices have become more popular, but investment money for medical device development is not easily available in the market. Worldwide health-care budget constraints mean that efficient medical device development has become essential. To achieve efficient development, globalization is a key to success. Spending large amounts of money in different regions for medical device development is no longer feasible. Methods and Results: In order to streamline processes of global medical device development, an academic, governmental, and industrial consortium, called the Harmonization by Doing program, has been set up. The program has been operating between Japan and the USA since 2003. The program has 4 working groups: (1) Global Cardiovascular Device Trials; (2) Study on Post-Market Registry; (3) Clinical Trials; and (4) Infrastructure and Methodology Regulatory Convergence and Communication. Each working group has as its goals the achievement of speedy and efficient medical device development in Japan and the USA. The program has held multiple international meetings to deal with obstacles against efficient medical device development. Conclusions: This kind of program is very important to deliver novel medical devices. Involvement of physicians in this type of activity is also very helpful to achieve these goals..
2. Masayoshi Yoshida, Akiko Chishaki, Yoshinori Murayama, Satoshi Kimura, Makoto Ando, Toshirou Saito, Touru Shiino, Keiichiro Shiba, Koji Todaka, Kenji Sunagawa, Transcutaneous Bionic Baroreflex System Is Widely Applicable For Preventing Severe Orthostatic Hypotension In Patients With Cervical Cord Injury, CIRCULATION, 118, 18, S548-S548, 2008.10.
3. Takahiro Inoue, Tomomi Ide, Henna Tyynismaa, Masayoshi Yoshida, Makoto Ando, Atsushi Tanaka, Koji Todaka, Dongchon Kang, Anu Suomalainen, Kenji Sunagawa, Overexpression of Mitochondria DNA Helicase, Twinkle, Ameliorates Cardiac Remodeling and Failure in Mice, CIRCULATION, 118, 18, S314-S315, 2008.10.
4. Takuya Nishikawa, Keita Saku, Koji Todaka, Yukimitsu Kuwabara, Shinobu Arai, Takuya Kishi, Tomomi Ide, Hiroyuki Tsutsui, Kenji Sunagawa, The challenge of magnetic vagal nerve stimulation for myocardial infarction -preliminary clinical trial, Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS, 10.1109/EMBC.2017.8037812, 2017, 4321-4324, 2017.09, Numerous studies have shown in animal models that vagal nerve stimulation (VNS) strikingly reduces infarct size of acute myocardial infarction (AMI) and prevents heart failure. However, the lack of techniques to noninvasively stimulate the vagal nerve hinders VNS from clinical applications. Transcranial magnetic stimulation is noninvasive and capable of stimulating central neurons in patients. In this study, we examined whether the magnetic stimulation could noninvasively activate the cervical vagal nerve in healthy human. Sixteen healthy males and 4 females were enrolled in this study. We used Magstim Rapid2 with a 70-mm double coil in the right neck. We randomly assigned the subjects to 5 Hz or 20 Hz stimulation. We defined the maximum intensity of stimulation (MAX) which is the intensity just below the threshold of adverse effects. We defined HALF as a half of MAX. Protocols comprised 2 sets of MAX and 2 sets of HALF. Each stimulation continued for 3 minutes. We monitored heart rate (HR) and assessed the bradycardic response as an index of successful VNS. Nineteen subjects completed all protocols. They had no problematic adverse events during and/or after magnetic VNS. The magnetic VNS induced transient bradycardic responses in some subjects, whereas failed to induce sustained bradycardia in pooled data in any settings. Arterial pressure did not change either. Successful magnetic stimulation requires technical improvements including narrowing the magnetic focus and optimization of stimulation site. These improvements may enable us to apply magnetic VNS in the management of AMI..
5. Kiminori Kimura, Akemi Ikoma, Maki Shibakawa, Shinji Shimoda, Kenichi Harada, Masanao Saio, Jun Imamura, Yosuke Osawa, Masamichi Kimura, Koji Nishikawa, Takuji Okusaka, Satoshi Morita, Kazuaki Inoue, Tatsuya Kanto, Koji Todaka, Yoichi Nakanishi, Michinori Kohara, Masashi Mizokami, Safety, Tolerability, and Preliminary Efficacy of the Anti-Fibrotic Small Molecule PRI-724, a CBP/β-Catenin Inhibitor, in Patients with Hepatitis C Virus-related Cirrhosis: A Single-Center, Open-Label, Dose Escalation Phase 1 Trial, EBioMedicine, 10.1016/j.ebiom.2017.08.016, 23, 79-87, 2017.09, Background There is currently no anti-fibrotic drug therapy available to treat hepatitis C virus (HCV) cirrhosis. The aim of this study was to assess the safety, tolerability, and anti-fibrotic effect of PRI-724, a small-molecule modulator of Wnt signaling, in patients with HCV cirrhosis. Methods In this single-center, open-label, phase 1 trial, we sequentially enrolled patients with HCV cirrhosis who were classified as Child-Pugh (CP) class A or B. PRI-724 was administered as a continuous intravenous infusion of 10, 40, or 160 mg/m2/day for six cycles of 1 week on and 1 week off. The primary endpoints were frequency and severity of adverse events. The secondary endpoint was efficacy of PRI-724 in treating cirrhosis based on CP score and liver biopsy. This study is registered with ClinicalTrials.gov (no. NCT02195440). Findings Between Sept 3, 2014 and May 2, 2016, 14 patients were enrolled: CP class A:B, 6:8; median age, 62 (range: 43 to 74) years; male:female, 10:4. Twelve of the 14 patients completed six cycles of treatment; one was withdrawn from the study due to possible study drug-related liver injury (grade 3) in the 160 mg/m2/day dose cohort and one withdrew for personal reasons. Serious adverse events occurred in three patients [21% (3/14)], one of which was possibly related to PRI-724. The most common adverse events were nausea [29% (4/14)] and fatigue [21% (3/14)]. After PRI-724 administration, the CP scores worsened by 1 point in two patients in the 10 mg/m2/day cohort, improved in three patients at 1, 1, and 2 points in the 40 mg/m2/day cohort, and improved in one patient by 3 points in the 160 mg/m2/day cohort. The histology activity index scores of the liver tissue improved in two patients and exacerbated in two patients in the 10 mg/m2/day cohort, and improved in one patient in the 40 mg/m2/day cohort. Interpretation This study showed that administration of 10 or 40 mg/m2/day intravenous PRI-724 over 12 weeks was well-tolerated by patients with HCV cirrhosis; however, liver injury as a possible related serious adverse event was observed in the 160 mg/m2/day cohort. Funding Source AMED..
6. Susumu Takase, Tetsuya Matoba, Soichi Nakashiro, Yasushi Mukai, Shujiro Inoue, Keiji Oi, Taiki Higo, Shunsuke Katsuki, Masao Takemoto, Nobuhiro Suematsu, Kenichi Eshima, Kenji Miyata, Mitsutaka Yamamoto, Makoto Usui, Kenji Sadamatsu, Shinji Satoh, Toshiaki Kadokami, Kiyoshi Hironaga, Ikuyo Ichi, Koji Todaka, Junji Kishimoto, Kensuke Egashira, Kenji Sunagawa, Ezetimibe in Combination With Statins Ameliorates Endothelial Dysfunction in Coronary Arteries After Stenting, Arteriosclerosis, Thrombosis, and Vascular Biology, 10.1161/atvbaha.116.308388, 37, 2, 350-358, 2017.02,
Objectives—

We sought to investigate whether treatment with ezetimibe in combination with statins improves coronary endothelial function in target vessels in coronary artery disease patients after coronary stenting.




Approach and Results—


We conducted a multicenter, prospective, randomized, open-label, blinded-end point trial among 11 cardiovascular treatment centers. From 2011 to 2013, 260 coronary artery disease patients who underwent coronary stenting were randomly allocated to 2 arms (statin monotherapy, S versus ezetimibe [10 mg/d]+statin combinational therapy, E+S). We defined target vessel dysfunction as the primary composite outcome, which comprised target vessel failure during treatment and at the 6- to 8-month follow-up coronary angiography and coronary endothelial dysfunction determined via intracoronary acetylcholine testing performed in cases without target vessel failure at the follow-up coronary angiography. Coadministration of ezetimibe with statins further lowered low-density lipoprotein cholesterol levels (83±23 mg/dL in S versus 67±23 mg/dL in E+S;
P
<0.0001), with significant decreases in oxidized low-density lipoprotein and oxysterol levels. Among patients without target vessel failure, 46 out of 89 patients (52%) in the S arm and 34 out of 96 patients (35%) in the E+S arm were found to have coronary endothelial dysfunction (
P
=0.0256), and the incidence of target vessel dysfunction at follow-up was significantly decreased in the E+S arm (69/112 (62%) in S versus 47/109 (43%) in E+S;
P
=0.0059). A post hoc analysis of post-treatment low-density lipoprotein cholesterol–matched subgroups revealed that the incidence of both target vessel dysfunction and coronary endothelial dysfunction significantly decreased in the E+S arm, with significant reductions in oxysterol levels.




Conclusions—

The CuVIC trial (Effect of Cholesterol Absorption Inhibitor Usage on Target Vessel Dysfunction after Coronary Stenting) has shown that ezetimibe with statins, compared with statin monotherapy, improves functional prognoses, ameliorating endothelial dysfunction in stented coronary arteries, and was associated with larger decreases in oxysterol levels.


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7. Kaku Nakano, Tetsuya Matoba, Jun-ichiro Koga, Yushi Kashihara, Masato Fukae, Ichiro Ieiri, Masanari Shiramoto, Shin Irie, Junji Kishimoto, Koji Todaka, Kensuke Egashira, Safety, Tolerability, and Pharmacokinetics of NK-104-NP, International Heart Journal, 10.1536/ihj.17-555, 59, 5, 1015-1025, 2018.09, Pulmonary hypertension (PH) is a disease with poor prognosis, caused by the obstruction/stenosis of small pulmonary arteries. Statin is known to have vasodilating and anti-inflammatory property and is considered to be a candidate of therapeutic agents for the treatment of PH, but its efficacy has not been verified in clinical trials. We have formulated pitavastatin incorporating nanoparticles composed of poly (lactic-co-glycolic acid) (NK-104-NP) to improve drug delivery to the pulmonary arteries and evaluated their safety and pharmacokinetics in healthy volunteers. To accomplish this purpose, phase I clinical trials were conducted. In the single intravenous administration regimen, 40 healthy subjects were enrolled and PK (pharmacokinetic) parameters in 4 groups (1, 2, 4, and 8 mg as pitavastatin calcium) were as follows: 1.00 hour after the administration, the plasma concentration of pitavastatin reached Cmax (the maximum drug concentration) in all groups. Cmax, AUC0-t (area under the curve from time 0 to the last measurable concentration) and AUC0-∞ (area under the curve from time 0 extrapolated to infinite time) were increased in a dose-dependent manner. Population pharmacokinetic analysis based on these results indicated no accumulation of pitavastatin after repeated administration of NK-104-NP for 7 days. In this 7-day administration trial, the mean Cmax and AUC0-∞ of pitavastatin were not significantly different between days 1 and 7, suggesting that pitavastatin is unlikely to accumulate after repeated administration. In these trials, three adverse events (AEs) were reported, but they were resolved without any complications and judged to have no causal relationships with NK-104-NP. These results indicate that the innovative nanotechnology-based medicine NK-104-NP exhibited dose-dependent pharmacokinetics and was well tolerated with no significant AEs in healthy volunteers..
8. Mutsunori Murahashi, Hisanobu Ogata, Toshihiko Okazaki, Yasuki Hijikata, Kazunari Yamada, Toshihisa Tsuruta, Junji Kishimoto, Kouta Funakoshi, Koji Todaka, Yoichi Nakanishi, Kenzaburo Tani, Investigator initiated clinical trial of cancer vaccine OCV-C01 in advanced and recurrent biliary tract cancer, ANNALS OF ONCOLOGY, 29, 2018.10.
9. Koji Todaka, Junji Kishimoto, Masayuki Ikeda, Koji Ikeda, Haruko Yamamoto, Impact of Risk-Benefit Perception and Trust on Medical Technology Acceptance in Relation to Drug and Device Lag: A Tripartite Cross-Sectional Survey, Therapeutic Innovation & Regulatory Science, 10.1177/2168479017739267, 52, 5, 629-640, 2018.09, BACKGROUND: New drug and medical device introduction in Japan usually lags behind that in the West. Many reports indicate that in Japan, the associated risks are considered greater than the benefits recognized in other countries. This study aimed to compare the relationship between risk-benefit perception and acceptance of medical technologies in 3 leading markets. METHODS: A tripartite cross-sectional survey of the general public was used. In total, 3345 adults in the United Kingdom, the United States, and Japan participated, and sexes and age groups were equally represented. Questions about the perception of risk, benefit, and acceptance of medical and other scientific technologies, and trust of medical product providers or regulatory authorities were included. RESULTS: Five-step Likert coding for risk/benefit/acceptance of 4 medical items (x-rays, antibiotics, vaccines, and cardiac pacemakers) and 6 general items (such as automobiles and airplanes) were collected. Relationships between benefit perception and acceptance were linear for 4 medical technologies. The relationship had a similar slope but was shifted downward in Japan compared with the UK and US ( P
10. Akiomi Yoshihisa, Takamasa Sato, Katsuya Kajimoto, Naoki Sato, Yasuchika Takeishi, Kuniya Asai, Ryo Munakata, Toshiyuki Aokage, Asuka Yoshida, Yuichiro Minami, Dai Yumino, Masayuki Mizuno, Erisa Kawada, Kentaro Yoshida, Yuri Ozaki, Tomohito Kogure, Shintaro Haruki, Koichi Nakao, Tadashi Sawamura, Toshiaki Nuki, Ryoji Ishiki, Shigeki Yokota, Hiroyuki Fujinaga, Takashi Yamamoto, Kenji Harada, Akihiro Saito, Norihito Kageyama, Takanobu Okumura, Noritake Hata, Koji Murai, Ayaka Nozaki, Hidekazu Kawanaka, Jun Tanabe, Yukihito Sato, Katsuhisa Ishii, Hitoshi Oiwa, Tomoaki Matsumoto, Daisuke Yoshida, Nobuo Kato, Hitoshi Oiwa, Daisuke Yoshida, Nobuo Kato, Hiroshi Suzuki, Nobuyuki Shimizu, Takehiko Keida, Masaki Fujita, Kentaro Nakamura, Toshiya Chinen, Kentaro Meguro, Tatsuro Kikuchi, Toshiyuki Nishikido, Marohito Nakata, Tatsuya Yamashita, Masaya Nakata, Akitoshi Hirono, Kazuaki Mitsudo, Kazushige Kadota, Noriko Makita, Nagisa Watanabe, Masaaki Kawabata, Kenichi Fuji, Shinichi Okuda, Shigeki Kobayashi, Ikuo Moriuchi, Kiyo-O Mizuno, Kazuo Osato, Tatsuaki Murakami, Yoshifumi Shimada, Katsushi Misawa, Hiromasa Kokado, Takashi Fujita, Yoshitomo Fukuoka, Syu Takabatake, Yoshifumi Takata, Manabu Miyagi, Nobuhiro Tanaka, Akira Yamashina, Shinji Sudo, Koichi Shimamura, Michitaka Nagashima, Tomoya Kaneda, Kosei Ueda, Hiromasa Kato, Toshinori Higashikata, Kanichi Fujimori, Hiroshi Kobayashi, Shinya Fujii, Masahiro Yagi, Jyunko Takaki, Eiji Yamashita, Takuji Toyama, Etsuo Hirata, Kazuho Kamisihima, Toshiaki Oka, Ryushi Komatsu, Akira Itoh, Takahiko Naruko, Yukio Abe, Eiichirou Nakagawa, Atsuko Furukawa, Naoto Kinou, Shoko Uematsu, Isao Tabuchi, Taku Imai, Takafumi Sakamoto, Koji Todaka, Yuji Koide, Koji Maemura, Koichiro Yoshioka, Akiomi Yoshihisa, Takamasa Sato, Yasuchika Takeish, Toshiaki Ebina, Kazuo Kimura, Masaaki Konishi, Masahiko Kato, Yoshiharu Kinugasa, Katsunori Ishida, Shinobu Sugihara, Kiyotaka Yanagihara, Toshiharu Takeuchi, Motoi Okada, Naoyuki Hasebe, Tetsuo Sakai, Taku Asano, Yoshino Minoura, Tsutomu Toshida, Takatoshi Sato, Yuya Yokota, Seita Kondo, Yasushi Sakata, Issei Komuro, Kinya Otsu, Shizuya Yamashita, Yoshihiro Asano, Atsuya Kajimoto, Kazunori Kashiwase, Yasunori Ueda, Aizo Kondo, Katsuhiro Kawaguchi, Akinori Sawamura, Taro Saito, Tom Higa, Hiroo Noguchi, Yoko Yanagita, Keita Nakamura, Tomo Komaki, Oshihiro Muramatsu, Tomomi Koizumi, Yoshie Nakajima, Toshihiko Kikutani, Yoshifimi Ikeda, Tom Tamaki, Shuhei Funada, Harumi Ogawa, Koichiro Sakuragawa, Shun Kohsaka, Shin-ichi Ando, Toshiaki Kadokami, Eiko Ishida, Katsumi Ide, Yohei Sotomi, Yoshiharu Higuchi, Motoko Uehara, Toshihiko Goto, Nobuyuki Ohte, Masanobu Miura, Nobuyuki Shiba, Kotaro Nochioka, Hiroaki Shimokawa, Shiro Ishihara, Tokushi Koga, Shinichiro Fujishima, Shigeru Kaseda, Yoshie Haga, Keisuke Kida, Kazuho Kamisihima, Makiko Nakamura, Osahiko Sunagawa, Takafumi Miyara, Youji Taba, Takashi Touma, Osamu Shinjo, Oshioki Nishimura, Kazuomi Kario, Hayato Shimizu, Takahiro Uchida, Ken-ichi Amitani, Katsunori Shimada, Heterogeneous impact of body mass index on in-hospital mortality in acute heart failure syndromes: An analysis from the ATTEND Registry, EUROPEAN HEART JOURNAL-ACUTE CARDIOVASCULAR CARE, 10.1177/2048872617703061, 8, 7, 589-598, 2019.10, Background: Although the obesity paradox may vary depending upon clinical background factors such as age, gender, aetiology of heart failure and comorbidities, the reasons underlying the heterogeneous impact of body mass index (BMI) on in-hospital cardiac mortality under various conditions in patients with acute heart failure syndromes (AHFSs) remain unclear. Methods: Among 4617 hospitalised patients with AHFSs enrolled in the Acute Decompensated Heart Failure Syndromes (ATTEND) registry, the patient characteristics and in-hospital cardiac mortality rates in those with low BMI (BMI 25 kg/m(2), n = 1354). Results: Compared to the high-BMI group, the low-BMI group was significantly older, less likely to be male and to have hypertensive or idiopathic dilated aetiologies and more likely to have valvular aetiologies and a history of prior hospitalisation for AHFS. The low-BMI group also had lower prevalence rates of diabetes, dyslipidaemia, hypertension and atrial fibrillation and higher prevalence rates of anaemia and chronic obstructive pulmonary disease. In addition, cardiac mortality was significantly higher in the low-BMI group than in the high-BMI group (5.5 vs. 1.5%, p
11. Mamoru Ito, Hitomi Kawaji, Makoto Kubo, Eiji Oki, Eiji Iwama, Takahiro Maeda, Masanobu Ogawa, Masayuki Ochiai, Sawako Shikada, Hidetaka Yamamoto, Maya Suzuki, Koji Todaka, Naoki Nakashima, Minako Yoshihara, Mikita Suyama, Eishi Baba, Koichi Akashi, Yoichi Nakanishi, Current progress and issues of cancer genomic medicine in Kyushu University Hospital, ANNALS OF ONCOLOGY, 10.1093/annonc/mdz343.086, 30, 2019.10.
12. Toshio Hisatomi, Hiroshi Enaida, Shigeo Yoshida, Akito Hirakata, Masahito Ohji, Kohji Nishida, Toshiaki Kubota, Nahoko Ogata, Takaaki Matsui, Kazuhiro Kimura, Koh-Hei Sonoda, Makiko Uchiyama, Junji Kishimoto, Koji Todaka, Yoichi Nakanishi, Tatsuro Ishibashi, Safety and efficacy of brilliant blue g250 (BBG) for lens capsular staining: a phase III physician-initiated multicenter clinical trial, Japanese Journal of Ophthalmology, 10.1007/s10384-020-00763-y, 64, 5, 455-461, 2020.09, Purpose: To evaluate the safety and efficacy of BBG (Brilliant Blue G250) for lens capsular staining during cataract surgery with continuous curvilinear capsulorhexis. Study design: Prospective clinical study. Methods: This clinical trial enrolled 30 eyes of 30 patients who underwent cataract surgery with BBG (0.25 mg/mL Brilliant Blue G250) for capsular staining. Visualization of the lens capsule and the ease of capsulorhexis with BBG staining were evaluated in five grades (grade 0 to 4) by the Independent Data Monitoring Committee and the surgeons. The safety of BBG was also evaluated in terms of ocular and systemic tolerance for 7 days after surgery. Results: The use of BBG improved visualization of the lens capsule and complete capsulorhexis was performed in all patients. The major endpoint (Independent Data Monitoring Committee evaluation) showed that use of BBG improved visualization of the lens capsule and the ease of capsulorhexis (grades 2 to 4); the committee’s grading results were similar to those of the surgeons. Frequent complications observed in more than two eyes were conjunctival injection, corneal edema and intraocular pressure elevation. No severe complications were observed in ocular and systemic evaluations. Conclusion: BBG staining contributed to improved visualization of the lens capsule and aided in the completion of capsulorhexis during cataract surgery. The use of BBG for capsular staining also exhibited favorable safety results..
13. Kenichi Nakamura, Hitoshi Ozawa, Taro Shibata, Nobuko Ushirozawa, Tomomi Hata, Natsuko Okita, Nozomu Fuse, Norihiro Sato, Koji Ikeda, Hideki Hanaoka, Tatsuya Maruyama, Michihiko Wada, Shinobu Shimizu, Hiroi Kasai, Yoichi Yamamoto, Jun Sakurai, Koji Todaka, Shimon Tashiro, Haruko Yamamoto, Survey Results and Recommendations from Japanese Stakeholders for Good Clinical Practice Renovation, Therapeutic Innovation & Regulatory Science, 10.1007/s43441-021-00350-4, 56, 2, 220-229, 2021.11, Abstract
Background

The International Council for Harmonisation of Technical Requirements for Pharmaceuticals for Human Use (ICH) is undertaking a major revision of ICH E6 Good Clinical Practice (GCP) decided to involve external stakeholders in ICH-GCP renovation. Activities such as surveys and public conferences have taken place in the United States, European Union, and Japan. For stakeholder engagement in Japan, a designated research group conducted a survey of academic stakeholders.



Methods

A total of 105 academic stakeholders from 18 institutions responded to the survey. The research group developed recommendations reflecting the survey results and the opinions from patients and the public.



Results

The survey showed the top four principles needing renovation were (i) informed consent (Chapter 2.9, 12.4% of respondents believed it needed renovation), (ii) systems for quality assurance (Chapter 2.13, 9.5%), (iii) information on an investigational product (Chapter 2.4, 5.7%), and (iv) procedures on clinical trial information (Chapter 2.10, 5.7%). The top three sections identified as needing renovation were: (i) informed consent (Chapter 4.8, 27.6%), (ii) monitoring (Chapter 5.18, 22.9%), and (iii) composition, functions, and operations of the ethics committee (Chapter 3.2, 14.3%). Recommendations included clarification of ICH-GCP’s scope, proportionality in various aspects of clinical trials, diversity and liquidity of ethics committee members, modernization of informed consent procedures, variations in monitoring, and regulatory grade when using real-world data.



Conclusion

The recommendations from Japanese investigators and patients have been submitted to the ICH E6 Expert Working Group, which will strengthen the robustness of the GCP renovation.


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14. Mitsuru Arima, Hirosuke Inoue, Shintaro Nakao, Akiko Misumi, Maya Suzuki, Itsuka Matsushita, Shunsuke Araki, Chiemi Yamashiro, Kazumasa Takahashi, Masayuki Ochiai, Noriko Yoshida, Masayuki Hirose, Junji Kishimoto, Koji Todaka, Shunji Hasegawa, Kazuhiro Kimura, Koichi Kusuhara, Hiroyuki Kondo, Shouichi Ohga, Koh-Hei Sonoda, Study protocol for a multicentre, open-label, single-arm phase I/II trial to evaluate the safety and efficacy of ripasudil 0.4% eye drops for retinopathy of prematurity, BMJ Open, 10.1136/bmjopen-2020-047003, 11, 7, 2021.07, Introduction

Retinopathy of prematurity (ROP) is a vascular proliferative disorder that occurs in preterm infants. Existing treatments are only indicated in severe ROP cases due to the high invasiveness and the potential risk of irreversible side effects. We previously elucidated that ripasudil, a selective inhibitor of the Rho-associated protein kinase, has the ability to inhibit abnormal retinal neovascularisation in animal models. In addition, ripasudil eye drops (Glanatec ophthalmic solution 0.4%) have been already used for the treatment of glaucoma. Since eye drop therapy is less invasive, early intervention for ROP is possible. The purpose of this phase I/II trial is to evaluate the safety and efficacy of ripasudil eye drops for preterm infants with ROP.

Methods and analysis

This is a multicentre, open-label, single-arm phase I/II trial. To evaluate the safety and efficacy of ripasudil as much as possible, ripasudil will be administered to all enrolled preterm infants with zone I/II, stage 1, or worse ROP. The safety and efficacy of ripasudil in treated patients will be assessed in comparison to a historical control group. Because this is the first trial of ripasudil in preterm infants, a dose-escalation study (once daily for 1 week, then two times per day for 2 weeks) will be conducted in phase I. After obtaining approval from the independent data and safety monitoring board to continue the trial after the completion of phase I, phase II will be conducted. In phase II, ripasudil eye drops will be administered two times per day for 12 weeks. The primary endpoint in phase II is also safety. Efficacy and pharmacokinetics will be evaluated as secondary endpoints.

Ethics and dissemination

This study protocol was approved by the institutional review board at each of the participating centres. Data will be presented at international conferences and published in peer-reviewed journals.

Trial registration numbers

NCT04621136 and jRCT2071200047.

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15. Satoko Oda, Kenji Ashida, Makiko Uchiyama, Shohei Sakamoto, Nao Hasuzawa, Ayako Nagayama, Lixiang Wang, Hiromi Nagata, Ryuichi Sakamoto, Junji Kishimoto, Koji Todaka, Yoshihiro Ogawa, Yoichi Nakanishi, Masatoshi Nomura, An Open-label Phase I/IIa Clinical Trial of 11β-HSD1 Inhibitor for Cushing’s Syndrome and Autonomous Cortisol Secretion, The Journal of Clinical Endocrinology & Metabolism, 10.1210/clinem/dgab450, 106, 10, e3865-e3880, 2021.09, Abstract

Context

11β-hydroxysteroid dehydrogenase type 1 (11β-HSD1) inhibitors demonstrate antimetabolic and antisarcopenic effects in Cushing’s syndrome (CS) and autonomous cortisol secretion (ACS) patients.




Objective

To confirm the efficacy and safety of S-707106 (11β-HSD1 inhibitor) administered to CS and ACS patients.




Design

A 24-week single-center, open-label, single-arm, dose-escalation, investigator-initiated clinical trial on a database.




Setting

Kyushu University Hospital, Kurume University Hospital, and related facilities.




Patients

Sixteen patients with inoperable or recurrent CS and ACS, with mildly impaired glucose tolerance.




Intervention

Oral administration of 200 mg S-707106 after dinner, daily, for 24 weeks. In patients with insufficient improvement in oral glucose tolerance test results at 12 weeks, an escalated dose of S-707106 (200 mg twice daily) was administered for the residual 12 weeks.




Main Outcome Measures

The rate of participants responding to glucose tolerance impairment, defined as those showing a 25% reduction in the area under the curve (AUC) of plasma glucose during the 75-g oral glucose tolerance test at 24 weeks.




Results

S-707106 administration could not achieve the primary endpoint of this clinical trial (&gt;20% of responsive participants). AUC glucose decreased by −7.1% [SD, 14.8 (90% CI −14.8 to −1.0), P = 0.033] and −2.7% [14.5 (−10.2 to 3.4), P = 0.18] at 12 and 24 weeks, respectively. S-707106 administration decreased AUC glucose significantly in participants with a high body mass index. Body fat percentage decreased by −2.5% [1.7 (−3.3 to −1.8), P &lt; 0.001] and body muscle percentage increased by 2.4% [1.6 (1.7 to 3.1), P &lt; 0.001].




Conclusions

S-707106 is an effective insulin sensitizer and antisarcopenic and antiobesity medication for these patients.


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16. Yasuhiro Nakano, Mitsutaka Yamamoto, Tetsuya Matoba, Shunsuke Katsuki, Soichi Nakashiro, Susumu Takase, Yusuke Akiyama, Takuya Nagata, Yasushi Mukai, Shujiro Inoue, Keiji Oi, Taiki Higo, Masao Takemoto, Nobuhiro Suematsu, Kenichi Eshima, Kenji Miyata, Makoto Usui, Kenji Sadamatsu, Toshiaki Kadokami, Kiyoshi Hironaga, Ikuyo Ichi, Koji Todaka, Junji Kishimoto, Hiroyuki Tsutsui, Association between Serum Oxysterols and Coronary Plaque Regression during Lipid-Lowering Therapy with Statin and Ezetimibe: Insights from the CuVIC Trial., Journal of atherosclerosis and thrombosis, 10.5551/jat.63507, 2022.12, AIM: Several clinical trials using intravascular ultrasound (IVUS) evaluation have demonstrated that intensive lipid-lowering therapy by statin or a combination therapy with statin and ezetimibe results in significant regression of coronary plaque volume. However, it remains unclear whether adding ezetimibe to statin therapy affects coronary plaque composition and the molecular mechanisms of plaque regression. We conducted this prospective IVUS analysis in a subgroup from the CuVIC trial. METHODS: The CuVIC trial was a prospective randomized, open, blinded-endpoint trial conducted among 11 cardiovascular centers, where 260 patients with coronary artery disease who received coronary stenting were randomly allocated into either the statin group (S) or the combined statin and ezetimibe group (S+E). We enrolled 79 patients (S group, 39 patients; S+E group, 40 patients) in this substudy, for whom serial IVUS images of nonculprit lesion were available at both baseline and after 6-8 months of follow-up. RESULTS: After the treatment period, the S+E group had significantly lower level of low-density lipoprotein cholesterol (LDL-C; 80.9±3.7 vs. 67.7±3.8 mg/dL, p=0.0143). Campesterol, a marker of cholesterol absorption, and oxysterols (β-epoxycholesterol, 4β-hydroxycholesterol, and 27-hydroxycholesterol) were also lower in the S +E group. IVUS analyses revealed greater plaque regression in the S+E group than in the S group (-6.14% vs. -1.18% for each group, p=0.042). It was noteworthy that the lowering of campesterol and 27-hydroxycholesterol, but not LDL-C, had a significant positive correlation with plaque regression. CONCLUSIONS: Compared with statin monotherapy, ezetimibe in combination with statin achieved significantly lower LDL-C, campesterol, and 27-hydroxycholesterol, which resulted in greater coronary plaque regression..
17. Yuko Kobayakawa, Koji Todaka, Yu Hashimoto, Senri Ko, Wataru Shiraishi, Junji Kishimoto, Jun ichi Kira, Ryo Yamasaki, Noriko Isobe, A novel quantitative indicator for disease progression rate in amyotrophic lateral sclerosis, Journal of the Neurological Sciences, 10.1016/j.jns.2022.120389, 442, 2022.11, Objective: The current study sought to develop a new indicator for disease progression rate in amyotrophic lateral sclerosis (ALS). Methods: We used a nonparametric method to score diverse patterns of decline in the percentage of predicted forced vital capacity (%FVC) in patients with ALS. This involved 6317 longitudinal %FVC data sets from 920 patients in the Pooled Resource Open-Access ALS Clinical Trials (PRO-ACT) database volunteered by PRO-ACT Consortium members. To assess the utility of the derived scores as a disease indicator, we examined changes over time, the association with prognosis, and correlation with the Risk Profile of the Treatment Research Initiative to Cure ALS (TRICALS). Our local cohort (n = 92) was used for external validation. Results: We derived scores ranging from 35 to 106 points to construct the FVC Decline Pattern scale (FVC-DiP). Individuals' FVC-DiP scores were determined from a single measurement of %FVC and disease duration at assessment. Although the %FVC declined over the disease course (p
18. Arima M, Inoue H, Nakao S, Misumi A, Suzuki M, Matsushita I, Araki S, Yamashiro C, Takahashi K, Ochiai M, Yoshida N, Hirose M, Kishimoto J, Todaka K, Hasegawa S, Kimura K, Kusuhara K, Kondo H, Ohga S, Sonoda K. , Study protocol for a multicentre, open-label, single-arm phase I/II trial to evaluate the safety and efficacy of ripasudil 0.4% eye drops for retinopathy of prematurity. , BMJ Open. , 10.1136/bmjopen-2020-047003. , 11, 7, e047003, 2021.07.
19. Satoko Oda, Kenji Ashida, Makiko Uchiyama, Shohei Sakamoto, Nao Hasuzawa, Ayako Nagayama, Lixiang Wang, Hiromi Nagata, Ryuichi Sakamoto, Junji Kishimoto, Koji Todaka, Yoshihiro Ogawa, Yoichi Nakanishi, Masatoshi Nomura, , An open-label phase Ⅰ/Ⅱ a clinical trial of 11β-HSD1 inhibitor for Cushing's syndrome and autonomous cortisol secretion
, J Clin Endocrinol Metab. , 10.1210/clinem/dgab450., 2021.07.
20. Nakamura K, Ozawa H, Shibata T, Ushirozawa N, Hata T, Okita N, Fuse N, Sato N, Ikeda K, Hanaoka H, Maruyama T, Wada M, Shimizu S, Kasai H, Yamamoto Y, Sakurai J, Todaka K, Tashiro S, Yamamoto H., Survey Results and Recommendations from Japanese Stakeholders for Good Clinical Practice Renovation, Ther Innov Regul Sci. , 10.1007/s43441-021-00350-4., 17, 1-10, 2021.11.
21. Hisatomi T, Enaida H, Yoshida S, Hirakata A, Ohji M, Nishida K, Kubota T, Ogata N, Matsui T, Kimura K, Sonoda KH, Uchiyama M, Kishimoto J, Todaka K, Nakanishi Y, Ishibashi T, Safety and efficacy of brilliant blue g250 (BBG) for lens capsular staining: a phase III physician-initiated multicenter clinical trial., Jpn J Ophthalmol. , 64, 5, 455-461, 2020.05.
22. Safety Information Management of Investigator-initiated Clinical Trials in Japan.
23. Hiroyuki Kinoshita, Hiroshi Mannoji, Keita Saku, Jumpei Mano, Tadayoshi Miyamoto Koji Todaka, Takuya Kishi, Shigehiko Kanaya, and Kenji Sunagawa, Power Spectral Analysis of Short-Term Blood Pressure Recordings for Assessing Daily Variations of Blood Pressure in Human, Conf Proc IEEE Eng Med Biol Soc., 10.1109/EMBC.2018.8513040, 2018, 3626-3629, 2018.07, Although daily variations of blood pressure (BP) predict cardiovascular event risk, their assessment requires ambulatory BP monitoring which hinders the clinical application of this approach. Since the baroreflex is a major determinant of BP variations, especially in the frequency range of 0.01-0.1 Hz (baro-frequency), we hypothesized that the power spectral density (PSD) of short-term BP recordings in the baro-frequency range may predict daily variations of BP. In nine-week-old Wister-Kyoto male rats (N = 5) with or without baroreflex dysfunction, we telemetrically recorded continuous BP for 24 hours and estimated PSD using Welch's periodogram for the recordings during the 12-hour light period. We compared the reference PSD of 12-hour recording with the PSDs obtained from shorter data lengths ranging from 5 to 240 minutes. The 30-minute BP recordings reproduced PSD of 12-hour recordings well, and PSD in the baro-frequency range paralleled the standard deviation of 12-hour BP. Thus, the PSD of 30-minute BP reflects the daily BP variability in rats. In human subjects, we estimated PSD from 30-minute noninvasive continuous BP recordings. The rat and human PSDs shared remarkably similar characteristics. Furthermore, comparison of PSD between elderly and young subjects suggested that the baro-frequency range in humans overlapped with that in rats. In conclusion, PSD derived from 30-minute BP recordings is capable of predicting daily BP variations. Our proposed method may serve as a simple, noninvasive and practical tool for predicting cardiovascular events in the clinical setting..
24. Nakano K, Matoba T, Koga JI, Kashihara Y, Fukae M, Ieiri I, Shiramoto M, Irie S, Kishimoto J, Todaka K, Egashira K., Safety, Tolerability, and Pharmacokinetics of NK-104-NP., Int Heart J, 10.1536/ihj.17-555, 59, 5, 1015-1025, 2018.09.
25. 戸高 浩司, Junji Kishimoto, Masayuki Ikeda, Koji Ikeda, Haruko Yamamoto, Impact of Risk-Benefit Perception and Trust on Medical Technology Acceptance in Relation to Drug and Device Lag: A Tripartite Cross-Sectional Survey, Therapeutic Innovation & Regulatory Science, 10.1177/2168479017739267, 52, 5, 629-640, First Published November 29, 2017, 2018.09, [URL], Background: New drug and medical device introduction in Japan usually lags behind that in the West. Many reports indicate that in Japan, the associated risks are considered greater than the benefits recognized in other countries. This study aimed to compare the relationship between risk-benefit perception and acceptance of medical technologies in 3 leading markets. Methods: A tri- partite cross-sectional survey of the general public was used. In total, 3345 adults in the United Kingdom, the United States, and Japan participated, and sexes and age groups were equally represented. Questions about the perception of risk, benefit, and acceptance of medical and other scientific technologies, and trust of medical product providers or regulatory authorities were included. Results: Five-step Likert coding for risk/benefit/acceptance of 4 medical items (x-rays, antibiotics, vaccines, and cardiac pacemakers) and 6 general items (such as automobiles and airplanes) were collected. Relationships between benefit perception and acceptance were linear for 4 medical technologies. The relationship had a similar slope but was shifted downward in Japan compared with the UK and US (P < .01), suggesting a lower acceptance in Japan for all benefit perceptions. The trend was the same between risk perception and acceptance, except for slopes that were negative. Correspondence analysis showed a strong correlation among acceptance of medical technologies, benefits of medical technologies, trust in doctors, and trust in the Department of Health. The UK and US attributes were clustered with positive responses such as “useful,” “acceptable,” and “trustworthy,” whereas Japan was clustered with intermediate to negative responses such as “neither” and “untrustworthy.” Conclusions: Acceptance of medical technologies was low in Japan because of significant differences in trust for doctors and authorities compared with that in the UK and US. This is a possible basis for delays of 24 to 60 months for medical product approval in Japan..
26. 木村 公則, 戸高 浩司, Nakanishi Y, Safety, Tolerability, and Preliminary Efficacy of the Anti-Fibrotic Small Molecule PRI-724, a CBP/β-Catenin Inhibitor, in Patients with Hepatitis C Virus-related Cirrhosis: A Single-Center, Open-Label, Dose Escalation Phase 1 Trial., EBioMedicine, 10.1016/j.ebiom.2017.08.016, 23, 79-87, 2017.09, BACKGROUND:

There is currently no anti-fibrotic drug therapy available to treat hepatitis C virus (HCV) cirrhosis. The aim of this study was to assess the safety, tolerability, and anti-fibrotic effect of PRI-724, a small-molecule modulator of Wnt signaling, in patients with HCV cirrhosis.
METHODS:

In this single-center, open-label, phase 1 trial, we sequentially enrolled patients with HCV cirrhosis who were classified as Child-Pugh (CP) class A or B. PRI-724 was administered as a continuous intravenous infusion of 10, 40, or 160mg/m2/day for six cycles of 1week on and 1week off. The primary endpoints were frequency and severity of adverse events. The secondary endpoint was efficacy of PRI-724 in treating cirrhosis based on CP score and liver biopsy. This study is registered with ClinicalTrials.gov (no. NCT02195440).
FINDINGS:

Between Sept 3, 2014 and May 2, 2016, 14 patients were enrolled: CP class A:B, 6:8; median age, 62 (range: 43 to 74) years; male:female, 10:4. Twelve of the 14 patients completed six cycles of treatment; one was withdrawn from the study due to possible study drug-related liver injury (grade 3) in the 160mg/m2/day dose cohort and one withdrew for personal reasons. Serious adverse events occurred in three patients [21% (3/14)], one of which was possibly related to PRI-724. The most common adverse events were nausea [29% (4/14)] and fatigue [21% (3/14)]. After PRI-724 administration, the CP scores worsened by 1 point in two patients in the 10mg/m2/day cohort, improved in three patients at 1, 1, and 2 points in the 40mg/m2/day cohort, and improved in one patient by 3 points in the 160mg/m2/day cohort. The histology activity index scores of the liver tissue improved in two patients and exacerbated in two patients in the 10mg/m2/day cohort, and improved in one patient in the 40mg/m2/day cohort.
INTERPRETATION:

This study showed that administration of 10 or 40mg/m2/day intravenous PRI-724 over 12weeks was well-tolerated by patients with HCV cirrhosis; however, liver injury as a possible related serious adverse event was observed in the 160mg/m2/day cohort.
FUNDING SOURCE:

AMED..
27. 西川 拓也, 朔 啓太, 戸高 浩司, Hiroyuki Tsutsui, Sunagawa K, The challenge of magnetic vagal nerve stimulation for myocardial infarction -preliminary clinical trial., Conf Proc IEEE Eng Med Biol Soc., 10.1109/EMBC.2017.8037812, 2017, 4321-4324, 2017.07, Numerous studies have shown in animal models that vagal nerve stimulation (VNS) strikingly reduces infarct size of acute myocardial infarction (AMI) and prevents heart failure. However, the lack of techniques to noninvasively stimulate the vagal nerve hinders VNS from clinical applications. Transcranial magnetic stimulation is noninvasive and capable of stimulating central neurons in patients. In this study, we examined whether the magnetic stimulation could noninvasively activate the cervical vagal nerve in healthy human. Sixteen healthy males and 4 females were enrolled in this study. We used Magstim Rapid2 with a 70-mm double coil in the right neck. We randomly assigned the subjects to 5 Hz or 20 Hz stimulation. We defined the maximum intensity of stimulation (MAX) which is the intensity just below the threshold of adverse effects. We defined HALF as a half of MAX. Protocols comprised 2 sets of MAX and 2 sets of HALF. Each stimulation continued for 3 minutes. We monitored heart rate (HR) and assessed the bradycardic response as an index of successful VNS. Nineteen subjects completed all protocols. They had no problematic adverse events during and/or after magnetic VNS. The magnetic VNS induced transient bradycardic responses in some subjects, whereas failed to induce sustained bradycardia in pooled data in any settings. Arterial pressure did not change either. Successful magnetic stimulation requires technical improvements including narrowing the magnetic focus and optimization of stimulation site. These improvements may enable us to apply magnetic VNS in the management of AMI..
28. Takase S, Tetsuya Matoba, Nakashiro S, Yasushi Mukai, Inoue S, Keiji Oi, Taiki Higo, Katsuki S, Takemoto M, Suematsu N, Eshima K, Miyata K, Yamamoto M, Usui M, Sadamatsu K, Satoh S, Kadokami T, Hironaga K, 戸高 浩司, Ezetimibe in Combination with Statins Ameliorates Endothelial Dysfunction in Coronary Arteries after Stenting: The CuVIC Trial, a Multicenter Randomized Controlled Trial, Arterioscler Thromb Vasc Biol., 37, 2, 350-358, 2017.02.
29. Uchida T, Ikeno F, Ikeda K, Suzuki Y, 戸高 浩司, Yokoi H, Thompson G, Krucoff M, Saito S, Global Cardiovascular Device Innovation: Japan-USA Synergies., Circ J, 77, 1714-1718, 2013.07, Background: Global medical devices have become more popular, but investment money for medical device development is not easily available in the market. Worldwide health-care budget constraints mean that efficient medical device development has become essential. To achieve efficient development, globalization is a key to success. Spending large amounts of money in different regions for medical device development is no longer feasible. Methods and Results: In order to streamline processes of global medical device development, an academic, governmental, and industrial consortium, called the Harmonization by Doing program, has been set up. The program has been operating between Japan and the USA since 2003. The program has 4 working groups: (1) Global Cardiovascular Device Trials; (2) Study on Post-Market Registry; (3) Clinical Trials; and (4) Infrastructure and Methodology Regulatory Convergence and Communication. Each working group has as its goals the achievement of speedy and efficient medical device development in Japan and the USA. The program has held multiple international meetings to deal with obstacles against efficient medical device development. Conclusions: This kind of program is very important to deliver novel medical devices. Involvement of physicians in this type of activity is also very helpful to achieve these goals..
30. Shimizu J, Todaka K, Burkhoff D, Load dependence of ventricular performance explained by model of calcium-myofilament interactions, American Journal of Physiology, 2002 Mar;282(3):H1081-91, 2002.03.
31. Todaka K, Wang J, Yi GH, Gu A, Zhu SM, Zhang H, Burkhoff D, Effect of BAY y 5959 on myocardial function and metabolism in normal and failing hearts., American Journal of Physiology, 274(5 Pt 2):H1560-8, 1998.05.
32. Todaka K, Ogino K, Gu A, Burkhoff D, Effect of ventricular stretch on contractile strength, calcium transient, and cAMP in intact canine hearts, American Journal of Physiology, 274, 3, H990-H1000, 274(3 Pt 2):H990-1000, 1998.03.
33. Todaka K, Wang J, Yi GH, Knecht M, Stennett R, Packer M, Burkhoff D, Impact of exercise training on ventricular properties in a canine model of congestive heart failure., American Journal of Physiology, 272(3 Pt 2):H1382-90, 1997.03.
34. Dickstein ML, Todaka K, Burkhoff D, Left-to-right systolic and diastolic ventricular interactions are dependent on right ventricular volume., American Journal of Physiology, 272(6 Pt 2):H2869-74, 1997.06.
35. Todaka K, Leibowitz D, Homma S, Fisher PE, DeRosa C, Stennett R, Packer M, Burkhoff D, Characterizing ventricular mechanics and energetics following repeated coronary microembolization., American Journal of Physiology, 272(1 Pt 2):H186-94, 1997.01.
36. Todaka K, Jiang T, Chapman JT, Gu A, Zhu SM, Herzog E, Hochman JS, Steinberg SF, Burkhoff D, Functional consequences of acute collagen degradation studied in crystalloid perfused rat hearts., Basic Research in Cardiology, 92(3):147-58, 1997.06.
37. Todaka K, Wang J, Yi GH, Stennett R, Knecht M, Packer M, Burkhoff D, Effects of levosimendan on myocardial contractility and oxygen consumption., Journal of Pharmacology & Experimental Therapeutics, 279(1):120-7, 1996.10.