研究者詳細 - 井山　諭

論文 - 井山　諭

分割表示 148 件中 1 - 20 件目／全件表示 >>

Intravenous Infusion of Autologous Mesenchymal Stem Cells Expanded in Auto Serum for Chronic Spinal Cord Injury Patients: A Case Series.

Ryosuke Hirota, Masanori Sasaki, Satoshi Iyama, Kota Kurihara, Ryunosuke Fukushi, Hisashi Obara, Tsutomu Oshigiri, Tomonori Morita, Masahito Nakazaki, Takahiro Namioka, Ai Namioka, Rie Onodera, Yuko Kataoka-Sasaki, Shinichi Oka, Mitsuhiro Takemura, Ryo Ukai, Takahiro Yokoyama, Yuichi Sasaki, Tatsuro Yamashita, Masato Kobayashi, Yusuke Okuma, Reiko Kondo, Ryo Aichi, Satoko Ohmatsu, Noritaka Kawashima, Yoichi M Ito, Masayoshi Kobune, Kohichi Takada, Sumio Ishiai, Toru Ogata, Atsushi Teramoto, Toshihiko Yamashita, Jeffery D Kocsis, Osamu Honmou

Journal of clinical medicine 13 ( 20 ) 2024年10月 [国際誌]

Objective: The safety, feasibility, and potential functional improvement following the intravenous infusion of mesenchymal stem cells (MSCs) were investigated in patients with chronic severe spinal cord injury (SCI). Methods: The intravenous infusion of autologous MSCs cultured in auto-serum under Good Manufacturing Practices (GMP) was administered to seven patients with chronic SCI (ranging from 1.3 years to 27 years after the onset of SCI). In addition to evaluating feasibility and safety, neurological function was evaluated using the American Spinal Injury Association Impairment Scale (AIS), International Standards for Neurological Classification of Spinal Cord Injury (ISCSCI-92), and Spinal Cord Independence Measure III (SCIM-III). Results: No serious adverse events occurred. Neither CNS tumors, abnormal cell growth, nor neurological deterioration occurred in any patients. While this initial case series was not blinded, significant functional improvements and increased quality of life (QOL) were observed at 90 and 180 days post-MSC infusion compared to pre-infusion status. One patient who had an AIS grade C improved to grade D within six months after MSC infusion. Conclusions: This case series suggests that the intravenous infusion of autologous MSCs is a safe and feasible therapeutic approach for chronic SCI patients. Furthermore, our data showed significant functional improvements and better QOL after MSC infusion in patients with chronic SCI. A blind large-scale study will be necessary to fully evaluate this possibility.

DOI PubMed

Intravenous Infusion of Autologous Mesenchymal Stem Cells Expanded in Auto Serum for Chronic Spinal Cord Injury Patients: A Case Series

Ryosuke Hirota, Masanori Sasaki, Satoshi Iyama, Kota Kurihara, Ryunosuke Fukushi, Hisashi Obara, Tsutomu Oshigiri, Tomonori Morita, Masahito Nakazaki, Takahiro Namioka, Ai Namioka, Rie Onodera, Yuko Kataoka-Sasaki, Shinichi Oka, Mitsuhiro Takemura, Ryo Ukai, Takahiro Yokoyama, Yuichi Sasaki, Tatsuro Yamashita, Masato Kobayashi, Yusuke Okuma, Reiko Kondo, Ryo Aichi, Satoko Ohmatsu, Noritaka Kawashima, Yoichi M. Ito, Masayoshi Kobune, Kohichi Takada, Sumio Ishiai, Toru Ogata, Atsushi Teramoto, Toshihiko Yamashita, Jeffery D. Kocsis, Osamu Honmou

Journal of Clinical Medicine 13 ( 20 ) 2024年10月

DOI

Novel method for assessing sinusoidal obstruction syndrome using four‐dimensional computed tomography

Saori Shimoyama‐Ibuki, Satoshi Iyama, Yoshiya Ohashi, Kento Ono, Yusuke Sugama, Chisa Fujita, Akari Goto, Hiroto Horiguchi, Akihito Fujimi, Takeo Tanaka, Kohichi Takada, Koh‐Ichi Sakata, Masayoshi Kobune

eJHaem ( Wiley ) 2024年07月

Abstract Introduction To diagnose sinusoidal obstruction syndrome/veno‐occlusive disease (SOS/VOD), transabdominal ultrasonography is usually used to detect hemodynamic changes, but we tried to detect the changes using four‐dimensional computed tomography (4D‐CT). A 42‐year‐old Japanese woman was diagnosed with late‐onset SOS/VOD with transabdominal ultrasonography and was also assessed using 4D‐CT. Method We analyzed the portal vein (PV) contrast effect every 1.5 seconds and plotted the values of the contrast effect. With this graph, we analyzed three hemodynamic parameters. Result We found that these parameters correlated with the patient's status and indicated stasis due to sinusoid constriction. Conclusion 4D‐CT may become a helpful tool to diagnose and follow up with SOS/VOD.

DOI

Intravenous infusion of auto-serum-expanded autologous mesenchymal stem cells into chronic severe brain injury patients

Tomohiro Yamaki, Shinichi Oka, Satoshi Iyama, Masanori Sasaki, Rie Onodera, Yuko Kataoka-Sasaki, Takahiro Namioka, Ai Namioka, Masahito Nakazaki, Mitsuhiro Takemura, Ryo Ukai, Takahiro Yokoyama, Yuichi Sasaki, Tatsuro Yamashita, Masato Kobayashi, Misako Yamaguchi, Marina Fukino, Taro Takazawa, Megumi Hayasaka, Takamitsu Owaku, Mika Funakura, Shinji Onodera, Yoichi M. Ito, Masayoshi Kobune, Junji Kato, Sumio Ishiai, Jeffery D. Kocsis, Masaru Odaki, Yasuo Iwadate, Shigeki Kobayashi, Osamu Honmou

Interdisciplinary Neurosurgery: Advanced Techniques and Case Management 36 2024年06月

Objective: This study explores safety, feasibility, and potential improvement in functional status after intravenous infusion of mesenchymal stem cells (MSCs) in chronic severe brain injury (BI) patients. Methods: An intravenous infusion of autologous MSCs in autoserum cultured under Good Manufacturing Practice was delivered to four chronic patients with BI. In addition to assessing feasibility and safety, neurological function was evaluated using the National Institutes of Health Stroke Scale, Fugl-Meyer Assessment, Barthel Index, and cognitive-related behavioral assessment. Imaging studies with 18F-FDG-PETCT and 11C-methionine-PETCT (METPET) were carried out to evaluate brain metabolic activity. Results: No serious adverse events were recorded. None of the patients developed CNS tumors, abnormal cell growth, or neurological deterioration. While this initial case series was not blinded, gradual functional improvement was observed after MSC infusion. Serial 11C-METPETs displayed a statistically significant increase in methionine uptake, primarily in the thalamus and pons. Conclusion: We emphasize that this study was unblinded and did not exclude placebo effects, the contribution of endogenous recovery, or observer bias; however, our observations support feasibility and safety. No adverse events were observed. The data suggests improved quality of life after infused MSCs; however, a blinded, larger-scale study will be necessary to fully address this possibility.

DOI

Anti‐CD38 antibody isatuximab monotherapy for Japanese individuals with relapsed/refractory multiple myeloma: An update of the phase 1/2 ISLANDs study

Kazutaka Sunami, Shin‐ichi Fuchida, Kenshi Suzuki, Masaki Ri, Morio Matsumoto, Chihiro Shimazaki, Hideki Asaoku, Hirohiko Shibayama, Kenichi Ishizawa, Hiroyuki Takamatsu, Takashi Ikeda, Dai Maruyama, Kazunori Imada, Michihiro Uchiyama, Toru Kiguchi, Satoshi Iyama, Hirokazu Murakami, Reiko Onishi, Keisuke Tada, Shinsuke Iida

Hematological Oncology ( Wiley ) 41 ( 3 ) 442 - 452 2022年12月

Abstract The primary analysis of the phase 1/2 ISLANDs study in Japanese individuals with relapsed/refractory multiple myeloma (RRMM) showed that isatuximab monotherapy was well tolerated and effective, even in participants with high‐risk cytogenetic abnormalities. Here, we report a prespecified second analysis conducted 20 months after the first dosing of the last participant (ClinicalTrials.gov identifier: NCT02812706). The primary objectives were to evaluate the safety and tolerability of isatuximab in phase 1 and to evaluate the efficacy of isatuximab, including assessment of overall response rate (ORR) at the recommended dose (RD), in phase 2. In phase 1, three participants received isatuximab 10 mg/kg every week (QW) for 4 weeks/cycle followed by every 2 weeks (Q2W) and five participants received 20 mg/kg QW/Q2W. Since no dose‐limiting toxicities occurred in phase 1, 20 mg/kg QW/Q2W was identified as the RD for the phase 2 study (n = 28). At the time of data cut‐off, three participants (one in phase 1 and two in phase 2) continued to receive isatuximab; disease progression and treatment‐related adverse events were the most common reasons for treatment discontinuation. The overall safety profile was consistent with the primary analysis. One death, not related to isatuximab treatment, was reported since the first analysis. The ORR and clinical benefit rate remained unchanged from the primary analysis at 36.4% (95% confidence interval [CI]: 20.4%–54.9%) and 54.5% (95% CI: 36.4%–71.9%), respectively. The median progression‐free survival (PFS) was 5.6 months, longer than the median PFS reported in the primary analysis (4.7 months), whereas median overall survival was not reached. Overall, isatuximab 20 mg/kg QW/Q2W had an acceptable safety and tolerability profile and showed promising antitumor activity in Japanese individuals with RRMM.

DOI

Humanized <scp>anti‐IL</scp> ‐26 monoclonal antibody as a novel targeted therapy for chronic graft‐versus‐host disease

Ryo Hatano, Takumi Itoh, Haruna Otsuka, Harumi Saeki, Ayako Yamamoto, Dan Song, Yuki Shirakawa, Satoshi Iyama, Tsutomu Sato, Noriaki Iwao, Norihiro Harada, Thomas M. Aune, Nam H. Dang, Yutaro Kaneko, Taketo Yamada, Chikao Morimoto, Kei Ohnuma

American Journal of Transplantation ( Wiley ) 2022年08月

DOI

血液疾患患者におけるCOVID-19感染症4例の報告(Four cases of COVID-19 patients with hematological malignancy)

小野賢人, 堀口拓人, 下山紗央莉, 藤田千紗, 後藤亜香利, 池田博, 井山諭, 村瀬和幸, 高田弘一, 藤谷好弘, 高橋聡, 黒沼幸治, 小船雅義

日本血液学会学術集会 ( (一社)日本血液学会 ) 83回 OS3 - 4 2021年09月

未分化大細胞リンパ腫の加療中に発症したCOVID-19関連肺炎

小野賢人, 堀口拓人, 下山紗央莉, 藤田千紗, 後藤亜香利, 池田博, 井山諭, 藤谷好弘, 高橋聡, 黒沼幸治, 小船雅義

臨床血液 ( (一社)日本血液学会-東京事務局 ) 62 ( 7 ) 852 - 852 2021年07月

Six-transmembrane epithelial antigen of the prostate 1 accelerates cell proliferation by targeting c-Myc in liver cancer cells

Kazutaka Iijima, Hajime Nakamura, Kohichi Takada, Naotaka Hayasaka, Tomohiro Kubo, Yui Umeyama, Satoshi Iyama, Koji Miyanishi, Masayoshi Kobune, Junji Kato

Oncology Letters ( Spandidos Publications ) 22 ( 1 ) 2021年05月

DOI

Intravenous infusion of auto serum-expanded autologous mesenchymal stem cells in spinal cord injury patients: 13 case series.

Osamu Honmou, Toshihiko Yamashita, Tomonori Morita, Tsutomu Oshigiri, Ryosuke Hirota, Satoshi Iyama, Junji Kato, Yuichi Sasaki, Sumio Ishiai, Yoichi M Ito, Ai Namioka, Takahiro Namioka, Masahito Nakazaki, Yuko Kataoka-Sasaki, Rie Onodera, Shinichi Oka, Masanori Sasaki, Stephen G Waxman, Jeffery D Kocsis

Clinical neurology and neurosurgery 203 106565 - 106565 2021年04月 [国際誌]

BACKGROUND: Although spinal cord injury (SCI) is a major cause of disability, current therapeutic options remain limited. Recent progress in cellular therapy with mesenchymal stem cells (MSCs) has provided improved function in animal models of SCI. We investigated the safety and feasibility of intravenous infusion of MSCs for SCI patients and assessed functional status after MSC infusion. METHODS: In this phase 2 study of intravenous infusion of autologous MSCs cultured in auto-serum, a single infusion of MSCs under Good Manufacturing Practice (GMP) production was delivered in 13 SCI patients. In addition to assessing feasibility and safety, neurological function was assessed using the American Spinal Injury Association Impairment Scale (ASIA), International Standards for Neurological and Functional Classification of Spinal Cord (ISCSCI-92). Ability of daily living was assessed using Spinal Cord Independence Measure (SCIM-III). The study protocol was based on advice provided by the Pharmaceuticals and Medical Devices Agency in Japan. The trial was registered with the Japan Medical Association (JMA-IIA00154). RESULTS: No serious adverse events were associated with MSC injection. There was neurologic improvement based on ASIA grade in 12 of the 13 patients at six months post-MSC infusion. Five of six patients classified as ASIA A prior to MSC infusion improved to ASIA B (3/6) or ASIA C (2/6), two ASIA B patients improved to ASIA C (1/2) or ASIA D (1/2), five ASIA C patients improved and reached a functional status of ASIA D (5/5). Notably, improvement from ASIA C to ASIA D was observed one day following MSC infusion for all five patients. Assessment of both ISCSCI-92, SCIM-III also demonstrated functional improvements at six months after MSC infusion, compared to the scores prior to MSC infusion in all patients. CONCLUSION: While we emphasize that this study was unblinded, and does not exclude placebo effects or a contribution of endogenous recovery or observer bias, our observations provide evidence supporting the feasibility, safety and functional improvements of infused MSCs into patients with SCI.

DOI PubMed

Possible clinical outcomes using early enteral nutrition in individuals with allogeneic hematopoietic stem cell transplantation: A single-center retrospective study

Satoshi Iyama, Hiroomi Tatsumi, Tsukasa Shiraishi, Masahiro Yoshida, Ayumi Tatekoshi, Akihito Endo, Taichiro Ishige, Yuh Shiwa, Soushi Ibata, Akari Goto, Kana Nagashima, Hiroto Horiguchi, Chisa Fujita, Hiroshi Ikeda, Kohichi Takada, Takayuki Nobuoka, Yusuke Kamihara, Shohei Kikuchi, Tsutomu Sato, Hirofumi Ohnishi, Shin-ichi Yokota, Masayoshi Kobune

Nutrition ( Elsevier BV ) 83 111093 - 111093 2021年03月 [査読有り]

担当区分：筆頭著者 , 責任著者

DOI

Successful mycophenolate mofetil treatment of a patient with severe steroid‐refractory hepatitis evoked by nivolumab plus ipilimumab treatment for relapsed bladder cancer

Ginji Omori, Kohichi Takada, Kazuyuki Murase, Naotaka Hayasaka, Hajime Nakamura, Satoshi Iyama, Hiroyuki Ohnuma, Koji Miyanishi, Fumimasa Fukuta, Toshiaki Tanaka, Naoya Masumori, Junji Kato

Clinical Case Reports ( Wiley ) 9 ( 2 ) 654 - 659 2021年02月

DOI

Isatuximab monotherapy in relapsed/refractory multiple myeloma: A Japanese, multicenter, phase 1/2, safety and efficacy study

Kazutaka Sunami, Kenshi Suzuki, Masaki Ri, Morio Matsumoto, Chihiro Shimazaki, Hideki Asaoku, Hirohiko Shibayama, Kenichi Ishizawa, Hiroyuki Takamatsu, Takashi Ikeda, Dai Maruyama, Hitomi Kaneko, Michihiro Uchiyama, Toru Kiguchi, Satoshi Iyama, Hirokazu Murakami, Keishiro Takahashi, Keisuke Tada, Sandrine Macé, Hélène Guillemin‐Paveau, Shinsuke Iida

Cancer Science ( Wiley ) 111 ( 12 ) 4526 - 4539 2020年12月 [査読有り] [国際誌]

Isatuximab, an anti-CD38 monoclonal antibody, targets cells that strongly express CD38 including malignant plasma cells. This open-label, single-arm, multicenter, phase 1/2 trial investigated the tolerability/safety and efficacy of isatuximab monotherapy in Japanese patients with heavily pretreated, relapsed/refractory multiple myeloma (RRMM). In Phase 1, patients were sequentially assigned to receive isatuximab once weekly (QW) in cycle 1 (4 weeks) and every 2 weeks (Q2W) in subsequent cycles. Cohort 1 (n = 3) received 10 mg/kg QW/Q2W; cohort 2 (n = 5) received 20 mg/kg QW/Q2W. No dose-limiting toxicities occurred; the recommended dose for the single-arm phase 2 study (n = 28) was 20 mg/kg QW/Q2W. The overall safety profile was consistent with the current knowledge of isatuximab. The most common adverse events were infusion reactions (42.9%; 12/28); all were grade 1/2 and generally occurred during the first infusion. The overall response rate with 20 mg/kg QW/Q2W isatuximab was 36.4% (12/33); patients with high-risk cytogenetic abnormalities had comparable results. In phase 2, the median progression-free survival was 4.7 (95% confidence interval, 3.75 to not reached) months. Median overall survival was not reached. Isatuximab monotherapy was well tolerated and effective in patients with heavily pretreated RRMM including high-risk cytogenetic patients. This trial is registered at ClinicalTrials.gov as NCT02812706.

DOI PubMed

Successful Treatment by Surgery and Lenvatinib of a Patient with Adrenal Metastasis of Papillary Thyroid Cancer

Hajime Nakamura, Kohichi Takada, Kazuyuki Murase, Hiroki Sakamoto, Naotaka Hayasaka, Kazuma Ishikawa, Yuki Ikeda, Makoto Yoshida, Satoshi Iyama, Ko Kobayashi, Tetsuya Shindo, Shintaro Sugita, Koji Miyanishi, Masayoshi Kobune, Naoya Masumori, Junji Kato

Case Reports in Oncological Medicine ( Hindawi Limited ) 2020 1 - 4 2020年11月

Papillary thyroid cancer (PTC) is considered an indolent cancer, but some PTC patients do present with distant metastases and treatment strategies for such patients are not well established. Recently, lenvatinib, an inhibitor of multiple tyrosine kinases, has been introduced to treat patients with advanced PTC but carries a risk of serious adverse events such as hemorrhage. Here, we report a PTC patient with a left adrenal metastasis and lenvatinib-induced hemorrhage who underwent successful surgical resection and was subsequently treated with a lower dose of lenvatinib. The patient has now been in a stable state with no adverse events for nearly two years. This case highlights the importance of surgical resection of metastatic PTC and subsequent lenvatinib therapy, even when the tumor is at an advanced stage.

DOI

Prospective evaluation of alternative donor from unrelated donor and cord blood in adult acute leukemia and myelodysplastic syndrome

Seitaro Terakura, Tetsuya Nishida, Masashi Sawa, Tomonori Kato, Kotaro Miyao, Yukiyasu Ozawa, Tatsunori Goto, Akio Kohno, Kazutaka Ozeki, Yasushi Onishi, Noriko Fukuhara, Nobuharu Fujii, Hisayuki Yokoyama, Masanobu Kasai, Hiroatsu Iida, Nobuhiro Kanemura, Tomoyuki Endo, Hiroatsu Ago, Makoto Onizuka, Satoshi Iyama, Yuichiro Nawa, Mika Nakamae, Yasuyuki Nagata, Shingo Kurahashi, Yasuo Tomiya, Atsumi Yanagisawa, Ritsuro Suzuki, Yachiyo Kuwatsuka, Yoshiko Atsuta, Koichi Miyamura, Makoto Murata

Bone Marrow Transplantation ( Springer Science and Business Media LLC ) 55 ( 7 ) 1399 - 1409 2020年07月 [査読有り]

DOI

Acquired amegakaryocytic thrombocytopenic purpura possibly induced by anti-PD-1 antibody

Satoshi Iyama, K. Takada, M. Yoshida, D. Takahashi, M. Kobune

Annals of Hematology ( Springer Science and Business Media LLC ) 99 ( 7 ) 1669 - 1670 2020年07月 [査読有り]

担当区分：筆頭著者 , 責任著者

DOI

Successful brentuximab vedotin monotherapy against late relapse of classical Hodgkin lymphoma 6 years after first remission

Kana Nagashima, Shohei Kikuchi, Satoshi Iyama, Chisa Fujita, Akari Goto, Hiroto Horiguchi, Masayoshi Kobune

Clinical Case Reports ( Wiley-Blackwell Publishing Ltd ) 8 ( 3 ) 466 - 468 2020年03月

DOI

Blastic plasmacytoid dendritic cell neoplasm(BPDCN)の2例

執行延明, 西田彩華, 菅野莉英, 藤岡茉生, 大橋隆宏, 堀本浩平, 加藤潤史, 肥田時征, 宇原久, 村瀬和幸, 井山諭, 須釜佑介, 前田和男

日本皮膚科学会雑誌 ( (公社)日本皮膚科学会 ) 130 ( 3 ) 418 - 418 2020年03月

Exceptionally rapid response to pembrolizumab in a SMARCA4‐deficient thoracic sarcoma overexpressing PD‐L1: A case report

Kohichi Takada, Shintaro Sugita, Kazuyuki Murase, Tomoki Kikuchi, Ginji Oomori, Ryo Ito, Naotaka Hayasaka, Koji Miyanishi, Satoshi Iyama, Hiroshi Ikeda, Masayoshi Kobune, Makoto Emori, Junji Kato, Tadashi Hasegawa

Thoracic Cancer ( Wiley ) 10 ( 12 ) 2312 - 2315 2019年12月

DOI

DPP8 is a novel therapeutic target for multiple myeloma

Tsutomu Sato, Ayumi Tatekoshi, Kohichi Takada, Satoshi Iyama, Yusuke Kamihara, Paras Jawaid, Mati Ur Rehman, Kyo Noguchi, Takashi Kondo, Sayaka Kajikawa, Kotaro Arita, Akinori Wada, Jun Murakami, Miho Arai, Ichiro Yasuda, Nam H. Dang, Ryo Hatano, Noriaki Iwao, Kei Ohnuma, Chikao Morimoto

Scientific Reports ( Springer Science and Business Media LLC ) 9 ( 1 ) 2019年12月 [査読有り]

AbstractDipeptidyl peptidases (DPPs) are proteolytic enzymes that are ideal therapeutic targets in human diseases. Indeed, DPP4 inhibitors are widely used in clinical practice as anti-diabetic agents. In this paper, we show that DPP4 inhibitors also induced cell death in multiple human myeloma cells. Among five DPP4 inhibitors, only two of them, vildagliptin and saxagliptin, exhibited apparent cytotoxic effects on myeloma cell lines, without any difference in suppression of DPP4 activity. As these two DPP4 inhibitors are known to have off-target effects against DPP8/9, we employed the specific DPP8/9 inhibitor 1G244. 1G244 demonstrated anti-myeloma effects on several cell lines and CD138+ cells from patients as well as in murine xenograft model. Through siRNA silencing approach, we further confirmed that DPP8 but not DPP9 is a key molecule in inducing cell death induced by DPP8/9 inhibition. In fact, the expression of DPP8 in CD38+ cells from myeloma patients was higher than that of healthy volunteers. DPP8/9 inhibition induced apoptosis, as evidenced by activated form of PARP, caspases-3 and was suppressed by the pan-caspase inhibitor Z-VAD-FMK. Taken together, these results indicate that DPP8 is a novel therapeutic target for myeloma treatment.

DOI

　前のページ - 次のページ　

<井山 諭>

論文 - 井山 諭

<井山　諭>

論文 - 井山　諭