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Nakagawa T, Murakami H, Ohsumi Y, Miyamoto E, Gotoh M. A newly developed surgeon-controlled suction device in robotic-assisted thoracoscopic surgery. Asian J Endosc Surg 2024; 17:e13273. [PMID: 38212268 DOI: 10.1111/ases.13273] [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: 09/01/2023] [Revised: 11/09/2023] [Accepted: 12/06/2023] [Indexed: 01/13/2024]
Abstract
INTRODUCTION Assistant surgeons usually clean the surgical field with a suction cannula in robotic-assisted surgery. This manipulation requires skill and experience to avoid interfering with the operation of the console surgeon. Recently, we created a new suction device that a console surgeon can manipulate with the robotic arms. MATERIALS AND SURGICAL TECHNIQUE A small metal suction tip with as a lumen and small side pores for suction and can be connected to a silicone tube connected to wall suction. The tip of the silicone tube can be grasped with robotic forceps and used for organ retraction as well as suction. The suction device has been used in eight lung lobectomy cases and four lung segmentectomy cases to date. There were no major difficulties related to the new suction device except for metal tip disconnection and blood clots clogging. DISCUSSION Our newly developed surgeon-controlled suction device is inexpensive, easy to handle, and useful for suction, blunt dissection, and organ retraction in robotic-assisted thoracoscopic surgery, especially when performing lymph node dissection.
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Affiliation(s)
| | | | - Yuki Ohsumi
- Department of Thoracic Surgery, Tenri Hospital, Nara, Japan
| | - Ei Miyamoto
- Department of Thoracic Surgery, Tenri Hospital, Nara, Japan
| | - Masashi Gotoh
- Department of Thoracic Surgery, Tenri Hospital, Nara, Japan
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Miyata R, Hamaji M, Nakakura A, Morita S, Shimazu Y, Ishikawa M, Kayawake H, Menju T, Sakaguchi Y, Sonobe M, Takahashi M, Aoyama A, Sumitomo R, Huang CL, Kono T, Miyahara R, Matsumoto A, Katakura H, Fukada T, Sakai H, Kobayashi M, Okumura N, Date N, Fujinaga T, Miyamoto E, Nakagawa T, Date H. Postoperative tegafur-uracil for stage I lung adenocarcinoma: first real-world data with an exploratory subgroup analysis. Surg Today 2023; 53:135-144. [PMID: 35780275 DOI: 10.1007/s00595-022-02546-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 03/15/2022] [Accepted: 05/12/2022] [Indexed: 01/11/2023]
Abstract
PURPOSE The effect of postoperative tegafur-uracil on overall survival (OS) after resection of stage I adenocarcinoma has been shown in clinical trials. The purpose of this study was to investigate whether findings from randomized trials of adjuvant tegafur-uracil are reproducible in a real-world setting. METHODS A retrospective cohort study was performed using a multi-institutional database that included all patients who underwent complete resection of pathological stage I adenocarcinoma between 2014 and 2016. Survival outcomes for patients managed with and without tegafur-uracil were analyzed using the Kaplan-Meier method and a Cox proportional hazards model for the whole patient cohort and in a selected cohort based on eligibility criteria of a previous randomized trial. Propensity score matching was used to adjust for confounding effects. RESULTS After propensity score matching, the hazard ratios for OS were 0.57 (95% confidence interval (CI) 0.29-1.14, P = 0.11) in the whole cohort and 0.69 (95% CI 0.32-1.50, P = 0.35) in the selected cohort. CONCLUSIONS The effects of tegafur-uracil in this retrospective study appear to be consistent with those found in randomized clinical trials. These effects may be maximized in patients aged from 45 to 75 years.
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Affiliation(s)
- Ryo Miyata
- Department of Thoracic Surgery, Japan Red Cross Wakayama Medical Center, Wakayama, Japan
| | - Masatsugu Hamaji
- Department of Thoracic Surgery, Kyoto University Hospital, Kyoto, Japan.
| | - Akiyoshi Nakakura
- Department of Biomedical Statistics and Bioinformatics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Satoshi Morita
- Department of Biomedical Statistics and Bioinformatics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yumeta Shimazu
- Department of Thoracic Surgery, Japan Red Cross Wakayama Medical Center, Wakayama, Japan
| | - Masashi Ishikawa
- Department of Thoracic Surgery, Japan Red Cross Wakayama Medical Center, Wakayama, Japan
| | - Hidenao Kayawake
- Department of Thoracic Surgery, Japan Red Cross Wakayama Medical Center, Wakayama, Japan
| | - Toshi Menju
- Department of Thoracic Surgery, Japan Red Cross Wakayama Medical Center, Wakayama, Japan
| | - Yasuto Sakaguchi
- Department of Thoracic Surgery, Osaka Red Cross Hospital, Osaka, Japan
| | - Makoto Sonobe
- Department of Thoracic Surgery, Osaka Red Cross Hospital, Osaka, Japan
| | - Mamoru Takahashi
- Department of Thoracic Surgery, Kyoto-Katsura Hospital, Kyoto, Japan
| | - Akihiro Aoyama
- Department of Thoracic Surgery, Kyoto-Katsura Hospital, Kyoto, Japan
| | - Ryota Sumitomo
- Department of Thoracic Surgery, Kitano Hospital, The Tazuke Kofukai Medical Institute, Osaka, Japan
| | - Cheng-Long Huang
- Department of Thoracic Surgery, Kitano Hospital, The Tazuke Kofukai Medical Institute, Osaka, Japan
| | - Tomoya Kono
- Department of Thoracic Surgery, Kyoto City Hospital, Kyoto, Japan
| | - Ryo Miyahara
- Department of Thoracic Surgery, Kyoto City Hospital, Kyoto, Japan
| | - Akira Matsumoto
- Department of Thoracic Surgery, Otsu Red Cross Hospital, Shiga, Japan
| | | | - Takahisa Fukada
- Department of Thoracic Surgery, Hyogo Prefectural Amagasaki General Medical Center, Hyogo, Japan
| | - Hiroaki Sakai
- Department of Thoracic Surgery, Hyogo Prefectural Amagasaki General Medical Center, Hyogo, Japan
| | - Masashi Kobayashi
- Department of Thoracic Surgery, Kurashiki Central Hospital, Okayama, Japan
| | - Norihito Okumura
- Department of Thoracic Surgery, Kurashiki Central Hospital, Okayama, Japan
| | - Naoki Date
- Department of Thoracic Surgery, Nagara Medical Center, Gifu, Japan
| | - Takuji Fujinaga
- Department of Thoracic Surgery, Nagara Medical Center, Gifu, Japan
| | - Ei Miyamoto
- Department of Thoracic Surgery, Tenri Hospital, Nara, Japan
| | | | - Hiroshi Date
- Department of Thoracic Surgery, Japan Red Cross Wakayama Medical Center, Wakayama, Japan
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Nakagawa T, Fukui T, Ohsumi Y, Miyamoto E, Gotoh M. Association between oxygen consumption and stepping exercise standardized with a triaxial accelerometer. Gen Thorac Cardiovasc Surg 2023; 71:27-32. [PMID: 35941402 DOI: 10.1007/s11748-022-01860-0] [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: 06/28/2022] [Accepted: 07/30/2022] [Indexed: 01/07/2023]
Abstract
OBJECTIVE According to the current American College of Chest Physicians (ACCP) guideline, a cardiopulmonary exercise test (CPET) is indicated in patients with lung cancer being considered for lung surgery. The measurement of maximum oxygen consumption ([Formula: see text] max) is not sufficiently prevalent because it requires special technical equipment. Considering that stepping is a simple and common exercise, we aimed to establish a simple and reproducible test with standardization of exercise intensity using a triaxial accelerometer. METHODS Twenty healthy volunteers (10 male, 10 female) were included in the study. The subjects were obliged to step on the same spot at the rate of 80 and 110 counts for 1 min each and then step as quickly as possible for the last minute. Oxygen consumption ([Formula: see text]) (mL/kg/min) for every breath was continuously measured during the exercise. A triaxial accelerometer was attached to the hip of test subjects whereby metabolic equivalents (METs) at each test level were measured. RESULTS The mean age of the study subjects was 42.9 ± 11.4 (mean ± SD). The mean value of [Formula: see text] at each level increased linearly along with the stepping level in each individual but varied among subjects. Using METs instead of step counts minimized the difference in regression lines among subjects. A receiver operating characteristic analysis revealed the possibility of [Formula: see text] prediction for the critical values of 10 and 20 mL/kg/min using METs. CONCLUSION A simple and reproducible stepping test was suggested as applicable to standardizing the intensity of exercise using a triaxial accelerometer.
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Affiliation(s)
- Tatsuo Nakagawa
- Department of Thoracic Surgery, Tenri Hospital, 200 Mishima, Nara, Tenri, 632-8552, Japan.
| | - Takamasa Fukui
- Department of Thoracic Surgery, Tenri Hospital, 200 Mishima, Nara, Tenri, 632-8552, Japan
| | - Yuki Ohsumi
- Department of Thoracic Surgery, Tenri Hospital, 200 Mishima, Nara, Tenri, 632-8552, Japan
| | - Ei Miyamoto
- Department of Thoracic Surgery, Tenri Hospital, 200 Mishima, Nara, Tenri, 632-8552, Japan
| | - Masashi Gotoh
- Department of Thoracic Surgery, Tenri Hospital, 200 Mishima, Nara, Tenri, 632-8552, Japan
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Miyata R, Hamaji M, Kawaguchi A, Shimazu Y, Ikeda M, Ishikawa M, Kayawake H, Menju T, Kobayashi M, Okumura N, Sakaguchi Y, Sonobe M, Matsumoto A, Shoji T, Katakura H, Sumitomo R, Huang CL, Takahashi M, Aoyama A, Muranishi Y, Kono T, Miyahara R, Date N, Fujinaga T, Miyamoto E, Nakagawa T, Fukada T, Sakai H, Date H. Epidermal growth factor receptor tyrosine kinase inhibitors as first-line treatment for postoperative recurrent EGFR-mutated lung adenocarcinoma: a multi-institutional retrospective study. Eur J Cardiothorac Surg 2022; 62:6673909. [PMID: 35997576 DOI: 10.1093/ejcts/ezac430] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 08/10/2022] [Accepted: 08/22/2022] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVES To analyze the long-term survival outcomes and prognostic factors of patients receiving epidermal growth factor receptor tyrosine kinase inhibitors (EGFR-TKIs) as first-line treatment for postoperative recurrent EGFR-mutated lung adenocarcinoma. METHODS Using a multi-institutional database, we performed a retrospective chart review to identify all patients who had undergone complete resection of stage I-III EGFR-mutated lung adenocarcinoma at 11 acute care hospitals between 2009 and 2016, and had received first-line EGFR-TKI treatment for postoperative recurrence. Adverse events, progression-free survival (PFS), and overall survival (OS) were investigated. Survival outcomes were assessed using Kaplan-Meier analysis. Cox proportional hazards models were used to calculate the hazard ratios (HRs) and 95% confidence intervals (CIs) for PFS and OS. RESULTS The study sample comprised 154 patients with a median age of 69. The total numbers of events were 101 for PFS and 60 for OS. The median PFS and OS were 26.1 months and 55.4 months, respectively. In the multivariable analysis, EGFR ex 21 L858R mutation (HR: 1.71, 95% CI: 1.15-2.55) and shorter disease-free intervals (HR: 0.98, 95% CI: 0.96-0.99) were significantly associated with shorter PFS. Age (HR: 1.03, 95% CI: 1.00-1.07), smoking history (HR: 2.31, 95% CI: 1.35-3.94) and pathological N2 disease at the initial surgery (HR: 2.30, 95% CI: 1.32-4.00) were significantly associated with shorter OS. CONCLUSIONS First-line EGFR-TKI treatment was generally associated with favorable survival outcomes in patients with postoperative recurrent EGFR-mutated lung adenocarcinoma. EGFR ex 21 L858R mutation may be an important prognostic factor for shorter PFS.
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Affiliation(s)
- Ryo Miyata
- Department of Thoracic Surgery, Japanese Red Cross Wakayama Medical Center, Wakayama, Japan
| | - Masatsugu Hamaji
- Department of Thoracic Surgery, Kyoto University Hospital, Kyoto, Japan
| | - Atsushi Kawaguchi
- Center for Comprehensive Community Medicine, Faculty of Medicine, Saga University, Fukuoka, Japan
| | - Yumeta Shimazu
- Department of Thoracic Surgery, Japanese Red Cross Wakayama Medical Center, Wakayama, Japan
| | - Masaki Ikeda
- Department of Thoracic Surgery, Japanese Red Cross Wakayama Medical Center, Wakayama, Japan
| | - Masashi Ishikawa
- Department of Thoracic Surgery, Japanese Red Cross Wakayama Medical Center, Wakayama, Japan
| | - Hidenao Kayawake
- Department of Thoracic Surgery, Kyoto University Hospital, Kyoto, Japan
| | - Toshi Menju
- Department of Thoracic Surgery, Kyoto University Hospital, Kyoto, Japan
| | - Masashi Kobayashi
- Department of Thoracic Surgery, Kurashiki Central Hospital, Okayama, Japan
| | - Norihito Okumura
- Department of Thoracic Surgery, Kurashiki Central Hospital, Okayama, Japan
| | - Yasuto Sakaguchi
- Department of Thoracic Surgery, Osaka Red Cross Hospital, Osaka, Japan
| | - Makoto Sonobe
- Department of Thoracic Surgery, Osaka Red Cross Hospital, Osaka, Japan
| | - Akira Matsumoto
- Department of Thoracic Surgery, Japanese Red Cross Otsu Red Cross Hospital, Shiga, Japan
| | - Tsuyoshi Shoji
- Department of Thoracic Surgery, Japanese Red Cross Otsu Red Cross Hospital, Shiga, Japan
| | - Hiromichi Katakura
- Department of Thoracic Surgery, Japanese Red Cross Otsu Red Cross Hospital, Shiga, Japan
| | - Ryota Sumitomo
- Department of Thoracic Surgery, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Osaka, Japan
| | - Cheng-Long Huang
- Department of Thoracic Surgery, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Osaka, Japan
| | - Mamoru Takahashi
- Department of Thoracic Surgery, Kyoto Katsura Hospital, Kyoto, Japan
| | - Akihiro Aoyama
- Department of Thoracic Surgery, Kyoto Katsura Hospital, Kyoto, Japan
| | - Yusuke Muranishi
- Department of Thoracic Surgery, Kyoto City Hospital, Kyoto, Japan
| | - Tomoya Kono
- Department of Thoracic Surgery, Kyoto City Hospital, Kyoto, Japan
| | - Ryo Miyahara
- Department of Thoracic Surgery, Kyoto City Hospital, Kyoto, Japan
| | - Naoki Date
- Department of Thoracic Surgery, Nagara Medical Center, Gifu, Japan
| | - Takuji Fujinaga
- Department of Thoracic Surgery, Nagara Medical Center, Gifu, Japan
| | - Ei Miyamoto
- Department of Thoracic Surgery, Tenri Hospital, Nara, Japan
| | | | - Takahisa Fukada
- Department of Thoracic Surgery, Hyogo Prefectural Amagasaki General Medical Center, Hyogo, Japan
| | - Hiroaki Sakai
- Department of Thoracic Surgery, Hyogo Prefectural Amagasaki General Medical Center, Hyogo, Japan
| | - Hiroshi Date
- Department of Thoracic Surgery, Kyoto University Hospital, Kyoto, Japan
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Kadomatsu Y, Yoshioka H, Shigemitsu K, Nomata Y, Mori S, Hijiya K, Motoyama H, Ichikawa Y, Sueyoshi K, Okasaka T, Miyamoto E, Kobayashi M, Takahashi M, Fujinaga T, Takechi H, Yamagishi H, Takuwa T, Kobayashi J, Sakamoto J, Taniguchi T, Hanaoka N, Kubo Y, Chen-Yoshikawa TF. Multicentre, prospective, observational study investigating the most appropriate surgical option that can prevent the recurrence of primary spontaneous pneumothorax after surgery: the PATCH study, protocol. BMJ Open 2021; 11:e052045. [PMID: 34930734 PMCID: PMC8689161 DOI: 10.1136/bmjopen-2021-052045] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
INTRODUCTION Thoracoscopic surgery is performed for refractory or recurrent primary spontaneous pneumothorax (PSP). To reduce postoperative recurrence, additional treatment is occasionally adopted during surgery after bulla resection. However, the most effective method has not been fully elucidated. Furthermore, the preference for additional treatment varies among countries, and its efficacy in preventing recurrence must be evaluated based on settings tailored for the conditions of a specific country. The number of registries collecting detailed data about PSP surgery is limited. Therefore, to address this issue, a prospective multicentre observational study was performed. METHODS AND ANALYSIS This multicentre, prospective, observational study will enrol 450 participants aged between 16 and 40 years who initially underwent PSP surgery. Data about demographic characteristics, disease and family history, surgical details, and CT scan findings will be collected. Follow-up must be conducted until 3 years after surgery or in the event of recurrence, whichever came first. Patients without recurrence will undergo annual follow-up until 3 years after surgery. The primary outcome is the rate of recurrence within 2 years after surgery. A multivariate analysis will be performed to compare the efficacy of different surgical options. Then, adverse outcomes correlated with various treatments and the feasibility of treatment methods will be compared. ETHICS AND DISSEMINATION This study was approved by the local ethics committee of all participating centres. The findings will be available in 2025, and they can be used as a basis for clinical decision-making regarding appropriate options for the initial PSP surgery. TRIAL REGISTRATION NUMBER NCT04758143.
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Affiliation(s)
- Yuka Kadomatsu
- Department of Thoracic Surgery, Nagoya University, Nagoya, Aichi, Japan
| | - Hiromu Yoshioka
- Department of Thoracic Surgery, Japanese Red Cross Aichi Medical Center Nagoya Daini Hospital, Nagoya, Aichi, Japan
| | - Kikuo Shigemitsu
- Department of Thoracic Surgery, Ogaki Municipal Hospital, Ogaki, Gifu, Japan
| | - Yuji Nomata
- Department of Thoracic Surgery, Toyohashi Municipal Hospital, Toyohashi, Aichi, Japan
| | - Shunsuke Mori
- Department of Thoracic Surgery, Yokkaichi Municipal Hospital, Yokkaichi, Mie, Japan
| | - Kyoko Hijiya
- Department of Thoracic Surgery, Shizuoka City Shizuoka Hospital, Shizuoka, Shizuoka, Japan
| | - Hideki Motoyama
- Department of Thoracic Surgery, Kobe City Nishi-Kobe Medical Center, Kobe, Hyogo, Japan
| | - Yasuhisa Ichikawa
- Department of Thoracic Surgery, Japanese Red Cross Aichi Medical Center Nagoya Daini Hospital, Nagoya, Aichi, Japan
| | - Kuniyo Sueyoshi
- Department of Thoracic Surgery, St. Luke's International Hospital, Tokyo, Japan
| | - Toshiki Okasaka
- Department of Thoracic Surgery, Toyota Kosei Hospital, Toyota, Aichi, Japan
| | - Ei Miyamoto
- Department of Thoracic Surgery, Tenri Hospital, Tenri, Nara, Japan
| | - Masashi Kobayashi
- Department of Thoracic Surgery, Kurashiki Central Hospital, Kurashiki, Okayama, Japan
| | - Mamoru Takahashi
- Department of Thoracic Surgery, Kyoto Katsura Hospital, Kyoto, Kyoto, Japan
| | - Takuji Fujinaga
- Department of Thoracic Surgery, National Hospital Organization Nagara Medical Center, Gifu, Gifu, Japan
| | - Hiroko Takechi
- Department of Thoracic Surgery, Hyogo Prefectural Amagasaki General Medical Center, Amagasaki, Hyogo, Japan
| | - Hiroya Yamagishi
- Department of Chest Surgery, Japanese Red Cross Fukui Hospital, Fukui, Fukui, Japan
| | - Teruhisa Takuwa
- Department of Thoracic Surgery, Osakafu Saiseikai Noe Hospital, Osaka, Japan
| | - Jun Kobayashi
- Department of Thoracic Surgery, Shimada Municipal Hospital, Shimada, Shizuoka, Japan
| | - Jin Sakamoto
- Department of Thoracic Surgery, Shimane Prefectural Central Hospital, Izumo, Shimane, Japan
| | - Tetsuo Taniguchi
- Department of Thoracic Surgery, Komaki City Hospital, Komaki, Aichi, Japan
| | - Nobuharu Hanaoka
- Department of Thoracic Surgery, Osaka Medical College Hospital, Takatsuki, Osaka, Japan
| | - Yoko Kubo
- Department of Preventive Medicine, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
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Miyamoto E, Seki K, Katsuragawa H, Yoshimoto Y, Ohsumi Y, Fukui T, Gotoh M, Nakagawa T. Thoracic composite hemangioendothelioma with neuroendocrine marker expression. Surg Case Rep 2021; 7:249. [PMID: 34837560 PMCID: PMC8627540 DOI: 10.1186/s40792-021-01331-3] [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: 09/26/2021] [Accepted: 11/15/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Composite hemangioendothelioma is an extraordinarily rare form of vascular neoplasm which develops predominantly in the skins and soft tissues of the adults. Neuroendocrine marker expression in composite hemangioendothelioma is considered as specifically relevant to the more aggressive behavior. CASE PRESENTATION The patient was a 71-year-old man complaining continuous back pain. Computed tomography (CT) showed that 10 cm of contrast-enhanced soft tissue mass was occurring on the right posterior chest wall and developing adjacent to the spinal canal. Via the laminectomy, the tumor end was identified and separated from the dura mater. Then, via the posterolateral thoracotomy, the en bloc resection was achieved by separating the tumor from the diaphragm and vertebras. Histologic examination showed a complex combination of epithelioid and retiform hemangioendothelioma areas which were positive for anti-synaptophysin staining. At 12-month follow-up, there were no signs of tumor recurrence on CT, and the patient had no symptom. CONCLUSIONS We achieved the complete resection of a huge thoracic neuroendocrine composite hemangioendothelioma developing adjacent to the spinal canal. The combination of the posterior lumbar laminectomy and the following posterior thoracotomy is a viable approach to radically resect a thoracic neuroendocrine composite hemangioendothelioma involving chest wall.
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Affiliation(s)
- Ei Miyamoto
- Division of Thoracic Surgery, Department of Surgery, Tenri Hospital, 200 Mishimacho, Tenri, Nara, 6328552, Japan.
| | - Kenji Seki
- Division of Orthopedic Surgery, Department of Surgery, Tenri Hospital, Tenri, Nara, Japan
| | - Hiroyuki Katsuragawa
- Department of Diagnostic Pathology, Pathologist, Tenri Hospital, Tenri, Nara, Japan
| | - Yuji Yoshimoto
- Division of Plastic Surgery, Department of Surgery, Tenri Hospital, Tenri, Nara, Japan
| | - Yuki Ohsumi
- Division of Thoracic Surgery, Department of Surgery, Tenri Hospital, 200 Mishimacho, Tenri, Nara, 6328552, Japan
| | - Takamasa Fukui
- Division of Thoracic Surgery, Department of Surgery, Tenri Hospital, 200 Mishimacho, Tenri, Nara, 6328552, Japan
| | - Masashi Gotoh
- Division of Thoracic Surgery, Department of Surgery, Tenri Hospital, 200 Mishimacho, Tenri, Nara, 6328552, Japan
| | - Tatsuo Nakagawa
- Division of Thoracic Surgery, Department of Surgery, Tenri Hospital, 200 Mishimacho, Tenri, Nara, 6328552, Japan
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Miyamoto E, Takahagi A, Ohsumi A, Martinu T, Hwang D, Boonstra KM, Joe B, Umana JM, Bei KF, Vosoughi D, Liu M, Cypel M, Keshavjee S, Juvet SC. Ex vivo delivery of regulatory T cells for control of alloimmune priming in the donor lung. Eur Respir J 2021; 59:13993003.00798-2021. [PMID: 34475226 DOI: 10.1183/13993003.00798-2021] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 08/17/2021] [Indexed: 11/05/2022]
Abstract
Survival after lung transplantation (LTx) is hampered by uncontrolled inflammation and alloimmunity. Regulatory T cells (Tregs) are being studied as a cellular therapy in solid organ transplantation. Whether these systemically administered Tregs can function at the appropriate location and time is an important concern. We hypothesized that in vitro expanded, recipient-derived Tregs can be delivered to donor lungs prior to LTx via ex vivo lung perfusion (EVLP), maintaining their immunomodulatory ability.In a rat model, Wistar Kyoto (WKy) CD4+CD25high Tregs were expanded in vitro prior to EVLP. Expanded Tregs were administered to Fisher 344 (F344) donor lungs during EVLP; left lungs were transplanted into WKy recipients. Treg localisation and function post-transplant were assessed. In a proof-of-concept experiment, cryopreserved expanded human CD4+CD25+CD127low Tregs were thawed and injected into discarded human lungs during EVLP.Rat Tregs entered the lung parenchyma and retained suppressive function. Expanded Tregs had no adverse effect on donor lung physiology during EVLP; lung water as measured by wet-to-dry weight ratio was reduced by Treg therapy. The administered cells remained in the graft at 3 days post-transplant where they reduced activation of intragraft effector CD4+ T cells; these effects were diminished by day 7. Human Tregs entered the lung parenchyma during EVLP where they expressed key immunoregulatory molecules (CTLA4+, 4-1BB+, CD39+, and CD15s+).Pre-transplant Treg administration can inhibit alloimmunity within the lung allograft at early time points post- transplant. Our organ-directed approach has potential for clinical translation.
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Affiliation(s)
- Ei Miyamoto
- Latner Thoracic Surgery Research Laboratories, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Akihiro Takahagi
- Latner Thoracic Surgery Research Laboratories, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Akihiro Ohsumi
- Latner Thoracic Surgery Research Laboratories, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Tereza Martinu
- Latner Thoracic Surgery Research Laboratories, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - David Hwang
- Latner Thoracic Surgery Research Laboratories, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Kristen M Boonstra
- Latner Thoracic Surgery Research Laboratories, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Betty Joe
- Latner Thoracic Surgery Research Laboratories, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Juan Mauricio Umana
- Latner Thoracic Surgery Research Laboratories, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Ke F Bei
- Latner Thoracic Surgery Research Laboratories, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Daniel Vosoughi
- Latner Thoracic Surgery Research Laboratories, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Mingyao Liu
- Latner Thoracic Surgery Research Laboratories, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Marcelo Cypel
- Latner Thoracic Surgery Research Laboratories, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Shaf Keshavjee
- Latner Thoracic Surgery Research Laboratories, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Stephen C Juvet
- Latner Thoracic Surgery Research Laboratories, University Health Network, University of Toronto, Toronto, Ontario, Canada
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Hamaji M, Omasa M, Nakanishi T, Nakakura A, Morita S, Miyamoto E, Nakagawa T, Miyahara S, Sonobe M, Takahashi M, Terada Y, Hijiya K, Sumitomo R, Huang CL, Kojima F, Shoji T, Date N, Miyata R, Suga M, Nakanobo R, Kawakami K, Aoyama A, Date H. Lymph node dissection in thymic carcinomas and neuroendocrine carcinomas. Interact Cardiovasc Thorac Surg 2021; 33:242-249. [PMID: 34151358 DOI: 10.1093/icvts/ivab079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 12/06/2020] [Revised: 02/11/2021] [Accepted: 02/18/2021] [Indexed: 12/26/2022] Open
Abstract
OBJECTIVES Although lymph node (LN) metastases are not uncommon in thymic carcinomas, preoperative LN evaluation, intraoperative lymph node dissection (LND) and postoperative outcomes remain unknown. The aim of this study was to elucidate the characteristics of and outcomes in patients with thymic carcinomas and thymic neuroendocrine carcinomas undergoing LND. METHODS A retrospective chart review was performed using our multi-institutional database to identify patients who underwent resection and LND for thymic carcinoma or thymic neuroendocrine carcinoma between 1991 and 2018. An enlarged mediastinal LN was defined as having a short-axis diameter >1 cm. We assessed survival outcomes using the Kaplan-Meier analysis. RESULTS N1-level LND was performed in 41 patients (54.6%), N2-level LND in 14 patients (18.7%) and both-level LND in 16 patients (21.3%). Pathological LN metastasis was detected in 20 patients (26.7%) among the 75 patients undergoing LND. There was a significant difference in the number of LN stations (P = 0.015) and metastasis factor (P = 0.0042) between pathologically LN-positive and pathologically LN-negative patients. The sensitivity of enlarged LNs on preoperative computed tomography was 18.2%. There was a tendency towards worse overall survival of pathologically N2-positive patients, although the difference was not statistically significant (P = 0.15). CONCLUSIONS Preoperative CT appears to play a limited role in detecting pathological LN metastases. Our findings suggest that the significance of N1- and N2-level LND should be evaluated in prospective studies to optimize the postoperative management of patients with thymic carcinomas and neuroendocrine carcinomas.
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Affiliation(s)
- Masatsugu Hamaji
- Department of Thoracic Surgery, Kyoto University Hospital, Kyoto, Japan
| | - Mitsugu Omasa
- Department of Thoracic Surgery, Nishi Kobe Medical Center, Kobe, Japan
| | - Takao Nakanishi
- Department of Thoracic Surgery, Nishi Kobe Medical Center, Kobe, Japan
| | - Akiyoshi Nakakura
- Department of Biomedical Statistics and Bioinformatics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Satoshi Morita
- Department of Biomedical Statistics and Bioinformatics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Ei Miyamoto
- Department of Thoracic Surgery, Tenri Hospital, Nara, Japan
| | | | - So Miyahara
- Department of Thoracic Surgery, Fukuoka University Hospital, Fukuoka, Japan
| | - Makoto Sonobe
- Department of Thoracic Surgery, Osaka Red Cross Hospital, Osaka, Japan
| | - Mamoru Takahashi
- Department of Thoracic Surgery, Kyoto-Katsura Hospital, Kyoto, Japan
| | - Yasuji Terada
- Department of Thoracic Surgery, Kyoto-Katsura Hospital, Kyoto, Japan
| | - Kyoko Hijiya
- Department of Thoracic Surgery, Shizuoka City Shizuoka Hospital, Shizuoka, Japan
| | - Ryota Sumitomo
- Department of Thoracic Surgery, Kitano Hospital, The Tazuke Kofukai Medical Institute, Osaka, Japan
| | - Cheng-Long Huang
- Department of Thoracic Surgery, Kitano Hospital, The Tazuke Kofukai Medical Institute, Osaka, Japan
| | - Fumitsugu Kojima
- Department of Thoracic Surgery, St. Luke's International Hospital, Tokyo, Japan
| | - Tsuyoshi Shoji
- Department of Thoracic Surgery, Nagara Medical Center, Gifu, Japan
| | - Naoki Date
- Department of Thoracic Surgery, Otsu Red Cross Hospital, Osaka, Japan
| | - Ryo Miyata
- Department of Thoracic Surgery, Kyoto University Hospital, Kyoto, Japan
| | - Michiharu Suga
- Department of Thoracic Surgery, Takatsuki Red Cross Hospital, Takatsuki, Japan
| | - Ryo Nakanobo
- Department of Thoracic Surgery, Shiga General Hospital, Shiga, Japan
| | - Kenzo Kawakami
- Department of Thoracic Surgery, Shiga General Hospital, Shiga, Japan
| | - Akihiro Aoyama
- Department of Thoracic Surgery, Kobe City Medical Centre General Hospital, Kobe, Japan
| | - Hiroshi Date
- Department of Thoracic Surgery, Kyoto University Hospital, Kyoto, Japan
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9
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Takahagi A, Miyamoto E, Joe B, Martinu T, Cypel M, Keshavjee S, Juvet S. Development of a Regulatory T Cell-Permissive Immunosuppression Protocol in a Rat Model of Ex Vivo Lung Perfusion Followed by Lung Transplantation. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.1868] [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: 11/24/2022] Open
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10
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Renaud-Picard B, Berra G, Hwang D, Miyamoto E, Berry G, Pal P, Juvet S, Keshavjee S, Martinu T. Spectrum of Chronic Lung Allograft Pathology in Human Lung Transplantation. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.1253] [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: 10/24/2022] Open
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11
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Takahagi A, Shindo T, Chen-Yoshikawa TF, Yoshizawa A, Gochi F, Miyamoto E, Saito M, Tanaka S, Motoyama H, Aoyama A, Takaori-Kondo A, Date H. Trametinib Attenuates Delayed Rejection and Preserves Thymic Function in Rat Lung Transplantation. Am J Respir Cell Mol Biol 2020; 61:355-366. [PMID: 30849233 DOI: 10.1165/rcmb.2018-0188oc] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Delayed immunological rejection after human lung transplantation causes chronic lung allograft dysfunction, which is associated with high mortality. Delayed rejection may be attributable to indirect alloantigen presentation by host antigen-presenting cells; however, its pathophysiology is not fully understood. The mitogen-activated protein kinase pathway is activated in T cells upon stimulation, and we previously showed that the MEK inhibitor, trametinib, suppresses graft-versus-host disease after murine bone marrow transplantation. We investigated whether trametinib suppresses graft rejection after two types of rat lung transplantation and analyzed its immunological mode of action. Major histocompatibility complex-mismatched transplantation from brown Norway rats into Lewis rats and minor histocompatibility antigen-mismatched transplantation from Fischer 344 rats into Lewis rats were performed. Cyclosporine (CsA) and/or trametinib were administered alone or consecutively. Acute and delayed rejection, lymphocyte infiltration, and pulmonary function were evaluated. Administration of trametinib after CsA suppressed delayed rejection, reduced inflammatory cell infiltration and fibrosis within the graft, and preserved pulmonary functions at Day 28. Trametinib suppressed functional differentiation of T and B cells in the periphery but preserved thymic T cell differentiation. Donor B cells within the graft disappeared by Day 14, indicating that delayed graft rejection at Day 28 was mainly due to indirect presentation by host antigen-presenting cells. Finally, trametinib administration without CsA preconditioning suppressed rejection after minor histocompatibility antigen-mismatched transplantation. Trametinib attenuates delayed rejection upon major histocompatibility complex-mismatched transplantation by suppressing indirect presentation and is a promising candidate to treat chronic lung allograft dysfunction in humans.
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Affiliation(s)
| | - Takero Shindo
- Department of Hematology/Oncology, Kyoto University Graduate School of Medicine, Kyoto, Japan; and
| | | | - Akihiko Yoshizawa
- Department of Diagnostic Pathology, Kyoto University Hospital, Kyoto, Japan
| | | | | | | | | | | | | | - Akifumi Takaori-Kondo
- Department of Hematology/Oncology, Kyoto University Graduate School of Medicine, Kyoto, Japan; and
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12
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Miyamoto E, Martinu T, Hwang D, Ohsumi A, Boonstra K, Joe B, Umana M, Liu M, Cypel M, Keshavjee S, Juvet S. Intrapulmonary Immune Regulation by Pre-Transplant Infusion of Recipient-Derived Regulatory T Cells in a Rat Model of Ex Vivo Lung Perfusion Followed by Transplantation. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.084] [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: 11/16/2022] Open
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13
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Nakajima N, Yoshizawa A, Nakajima T, Hirata M, Furuhata A, Sumiyoshi S, Rokutan-Kurata M, Sonobe M, Menju T, Miyamoto E, Chen-Yoshikawa TF, Date H, Haga H. GATA6-positive lung adenocarcinomas are associated with invasive mucinous adenocarcinoma morphology, hepatocyte nuclear factor 4α expression, and KRAS mutations. Histopathology 2018; 73:38-48. [PMID: 29469192 DOI: 10.1111/his.13500] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [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: 10/29/2017] [Accepted: 02/18/2018] [Indexed: 02/06/2023]
Abstract
AIMS GATA6 is known to play a role in lung development. However, its role in the carcinogenesis of lung cancer is not well studied. The aim of this study was to analyse GATA6 expression in lung adenocarcinomas (LAs) by immunohistochemistry (IHC) in order to define its association with clinicopathological characteristics. METHODS AND RESULTS IHC analysis of GATA6 was performed with tissue microarray slides containing 348 LAs. The association between GATA6 expression and clinicopathological parameters was evaluated. GATA6 expression in epithelial tumours other than lung cancer was also evaluated. GATA6 expression was found in 47 LAs (13.5%). This occurred more frequently in younger patients (P = 0.005), and was associated with the absence of lymph node metastasis (P =0.024), well-differentiated to moderately differentiated tumours (P < 0.001), the absence of lymphatic invasion (P = 0.020), and the absence of vascular invasion (P = 0.011). GATA6 expression was associated with mucin production (P < 0.001), the invasive mucinous adenocarcinoma subtype (P < 0.001), KRAS mutations (P = 0.026), expression of MUC2 (P < 0.001), CDX2 (P = 0.049), and MUC5AC (P < 0.001), and absence of expression of TTF-1 (P = 0.002). GATA6 expression was also associated with hepatocyte nuclear factor 4α (HNF4α) expression (P < 0.001). GATA6 expression tended to indicate better prognoses, whereas patients with HNF4α expression had significantly worse prognoses (P = 0.033). Of 270 tumours other than lung cancer, 110 expressed GATA6. CONCLUSIONS These findings suggest that GATA6 might interact with HNF4α and contribute to the development of mucinous-type LAs.
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Affiliation(s)
- Naoki Nakajima
- Department of Diagnostic Pathology, Kyoto University Hospital, Kyoto, Japan
| | - Akihiko Yoshizawa
- Department of Diagnostic Pathology, Kyoto University Hospital, Kyoto, Japan
| | - Tomoyuki Nakajima
- Department of Laboratory Medicine, Shinshu University Hospital, Matsumoto, Japan
| | - Masahiro Hirata
- Department of Diagnostic Pathology, Kyoto University Hospital, Kyoto, Japan
| | - Ayako Furuhata
- Department of Diagnostic Pathology, Kyoto University Hospital, Kyoto, Japan
| | - Shinji Sumiyoshi
- Department of Diagnostic Pathology, Kyoto University Hospital, Kyoto, Japan
| | | | - Makoto Sonobe
- Department of Thoracic Surgery, Kyoto University Hospital, Kyoto, Japan
| | - Toshi Menju
- Department of Thoracic Surgery, Kyoto University Hospital, Kyoto, Japan
| | - Ei Miyamoto
- Department of Thoracic Surgery, Kyoto University Hospital, Kyoto, Japan
| | | | - Hiroshi Date
- Department of Thoracic Surgery, Kyoto University Hospital, Kyoto, Japan
| | - Hironori Haga
- Department of Diagnostic Pathology, Kyoto University Hospital, Kyoto, Japan
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14
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Miyamoto E, Chen-Yoshikawa TF, Ueshima C, Yoshizawa A, Hamaji M, Yamamoto T, Kawada K, Haga H, Sakai Y, Date H. Transition of the programmed death 1 pathway from the primary colorectal cancer to its corresponding pulmonary metastasis. J Surg Oncol 2018; 117:1405-1412. [DOI: 10.1002/jso.25045] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Accepted: 02/19/2018] [Indexed: 12/23/2022]
Affiliation(s)
- Ei Miyamoto
- Department of Thoracic Surgery; Kyoto University Hospital; Sakyo-ku Kyoto Japan
| | | | - Chiyuki Ueshima
- Department of Diagnostic Pathology; Kyoto University Hospital; Sakyo-ku Kyoto Japan
| | - Akihiko Yoshizawa
- Department of Diagnostic Pathology; Kyoto University Hospital; Sakyo-ku Kyoto Japan
| | - Masatsugu Hamaji
- Department of Thoracic Surgery; Kyoto University Hospital; Sakyo-ku Kyoto Japan
| | - Takamasa Yamamoto
- Department of Surgery; Kyoto University Hospital; Sakyo-ku Kyoto Japan
| | - Kenji Kawada
- Department of Surgery; Kyoto University Hospital; Sakyo-ku Kyoto Japan
| | - Hironori Haga
- Department of Diagnostic Pathology; Kyoto University Hospital; Sakyo-ku Kyoto Japan
| | - Yoshiharu Sakai
- Department of Surgery; Kyoto University Hospital; Sakyo-ku Kyoto Japan
| | - Hiroshi Date
- Department of Thoracic Surgery; Kyoto University Hospital; Sakyo-ku Kyoto Japan
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15
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Miyamoto E, Martinu T, Ohsumi A, Boonstra K, Joe B, Liu M, Cypel M, Keshavjee S, Juvet S. Pre-transplant Ex Vivo Recipient-derived Regulatory T Cell Therapy of the Lung Allograft. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.225] [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: 10/17/2022] Open
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16
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Takahashi M, Chen-Yoshikawa TF, Saito M, Tanaka S, Miyamoto E, Ohata K, Kondo T, Motoyama H, Hijiya K, Aoyama A, Date H. Immersing lungs in hydrogen-rich saline attenuates lung ischaemia-reperfusion injury. Eur J Cardiothorac Surg 2017; 51:442-448. [PMID: 28364439 DOI: 10.1093/ejcts/ezw342] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [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: 05/19/2016] [Accepted: 08/29/2016] [Indexed: 12/12/2022] Open
Abstract
Objectives Anti-oxidant effects of hydrogen have been reported in studies examining ischaemia-reperfusion injury (IRI). In this study, we evaluated the therapeutic efficacy of immersing lungs in hydrogen-rich saline on lung IRI. Methods Lewis rats were divided into three groups: (i) sham, (ii) normal saline and (iii) hydrogen-rich saline. In the first experiment, the left thoracic cavity was filled with either normal saline or hydrogen-rich saline for 1 h. Then, we measured the hydrogen concentration in the left lung using a sensor gas chromatograph ( N = 3 per group). In the second experiment, lung IRI was induced by occlusion of the left pulmonary hilum for 1 h, followed by reperfusion for 3 h. During the ischaemic period, the left thoracic cavity was filled with either normal saline or hydrogen-rich saline. After reperfusion, we assessed lung function, histological changes and cytokine production ( N = 5-7 per group). Results Immersing lungs in hydrogen-rich saline resulted in an elevated hydrogen concentration in the lung (6.9 ± 2.9 μmol/1 g lung). After IRI, pulmonary function (pulmonary compliance and oxygenation levels) was significantly higher in the hydrogen-rich saline group than in the normal saline group ( P < 0.05). Similarly, pro-inflammatory cytokine levels (interleukin-1β and interleukin-6) in the left lung were significantly lower in the hydrogen-rich saline group than in the normal saline group ( P < 0.05). Conclusions Immersing lungs in hydrogen-rich saline delivered hydrogen into the lung and consequently attenuated lung IRI. Hydrogen-rich solution appears to be a promising approach to managing lung IRI.
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Affiliation(s)
- Mamoru Takahashi
- Central Animal Division, National Cancer Center Research Institute, Chuo-ku, Tokyo, Japan
| | | | - Masao Saito
- Department of Aerospace Psychology, Nagoya University, Japan
| | - Satona Tanaka
- Research Institute of Disaster management and EMS, Kokushikan University, Tokyo, Japan
| | - Ei Miyamoto
- Department of Thoracic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Keiji Ohata
- Department of Gastroenterology, NTT Medical Center Tokyo,Higashi-gotanda, Shinagawa-ku, Japan
| | - Takeshi Kondo
- Department of Internal Medicine, Division of Gastroenterology, Hyogo College of Medicine, Hyogo, Japan
| | - Hideki Motoyama
- Department of Hepatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Kyoko Hijiya
- Department of Thoracic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Akihiro Aoyama
- Department of Public Health and Health Systems, Nagoya University School of Medicine, Nagoya, Japan
| | - Hiroshi Date
- Department of Thoracic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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17
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Miyamoto E, Motoyama H, Sato M, Aoyama A, Menju T, Shikuma K, Sowa T, Yoshizawa A, Saito M, Takahagi A, Tanaka S, Takahashi M, Ohata K, Kondo T, Hijiya K, Chen-Yoshikawa TF, Date H. Association of Local Intrapulmonary Production of Antibodies Specific to Donor Major Histocompatibility Complex Class I With the Progression of Chronic Rejection of Lung Allografts. Transplantation 2017; 101:e156-e165. [PMID: 28207638 DOI: 10.1097/tp.0000000000001665] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
BACKGROUND Antibody-mediated rejection may lead to chronic lung allograft dysfunction, but antibody-mediated rejection may develop in the absence of detectable donor-specific antibody (DSA) in recipient serum. This study investigated whether humoral immune responses develop not only systemically but locally within rejected lung allografts, resulting in local production of DSA. METHODS Lewis rats received orthotopic left lung transplantation from Lewis (syngeneic control) or Brown-Norway (major histocompatibility complex-mismatched allogeneic) donor rats. Rats that underwent allogeneic lung transplantation were subsequently administered cyclosporine until day 14 (short immunosuppression) or day 35 (long immunosuppression). The lung grafts and spleens of recipient animals were tissue cultured for 4 days, and the titer of antibody against donor major histocompatibility complex molecules was assayed by flow cytometry. Explanted lung grafts were also evaluated pathologically. RESULTS By day 98, DSA titers in supernatants of lung graft (P = 0.0074) and spleen (P = 0.0167) cultures, but not serum, from the short immunosuppression group were significantly higher than titers in syngeneic controls. Cultures and sera from the long immunosuppression group showed no production of DSA. Microscopically, the lung grafts from the short immunosuppression group showed severe bronchiole obliteration and parenchymal fibrosis, along with lymphoid aggregates containing T and B cells, accompanying plasma cells. These findings suggestive of local humoral immune response were not observed by days 28 and 63. CONCLUSIONS DSA can be locally produced in chronically rejected lung allografts, along with intragraft immunocompetent cells. Clinical testing of DSA in serum samples alone may underestimate lung allograft dysfunction.
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Affiliation(s)
- Ei Miyamoto
- 1 Department of Thoracic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan. 2 Department of Thoracic Surgery, The University of Tokyo Hospital, Tokyo, Japan. 3 Department of Diagnostic Pathology, Kyoto University Hospital, Kyoto, Japan
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18
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Miyamoto E, Martinu T, Klement W, Juvet S, Keshavjee S, Tinckam K, Tikkanen J. The Impact of De Novo Donor-Specific Antibodies on Bronchiolitis Obliterans Syndrome and Restrictive Allograft Syndrome. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.077] [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: 11/27/2022] Open
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19
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Motoyama H, Chen-Yoshikawa T, Hijiya K, Tanaka S, Miyamoto E, Takahashi M, Ohata K, Aoyama A, Date H. Thermographic Evaluation During Ex Vivo Lung Perfusion for Detecting Regional Graft Damage. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.228] [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: 11/27/2022] Open
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20
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Ohata K, Chen-Yoshikawa TF, Menju T, Miyamoto E, Tanaka S, Takahashi M, Motoyama H, Hijiya K, Aoyama A, Date H. Protective Effect of Inhaled Rho-Kinase Inhibitor on Lung Ischemia-Reperfusion Injury. Ann Thorac Surg 2017; 103:476-483. [DOI: 10.1016/j.athoracsur.2016.07.067] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 06/16/2016] [Accepted: 07/27/2016] [Indexed: 10/20/2022]
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21
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Hijiya K, Chen-Yoshikawa TF, Kondo T, Motoyama H, Ohsumi A, Nakajima D, Sakamoto J, Ohata K, Takahashi M, Tanaka S, Miyamoto E, Aoyama A, Date H. Bronchodilator Inhalation During Ex Vivo Lung Perfusion Improves Posttransplant Graft Function After Warm Ischemia. Ann Thorac Surg 2017; 103:447-453. [DOI: 10.1016/j.athoracsur.2016.07.066] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2016] [Revised: 06/03/2016] [Accepted: 07/25/2016] [Indexed: 11/25/2022]
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22
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Yamamoto T, Kawada K, Itatani Y, Inamoto S, Okamura R, Iwamoto M, Miyamoto E, Chen-Yoshikawa TF, Hirai H, Hasegawa S, Date H, Taketo MM, Sakai Y. Loss of SMAD4 Promotes Lung Metastasis of Colorectal Cancer by Accumulation of CCR1+ Tumor-Associated Neutrophils through CCL15-CCR1 Axis. Clin Cancer Res 2016; 23:833-844. [PMID: 27492974 DOI: 10.1158/1078-0432.ccr-16-0520] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2016] [Revised: 07/01/2016] [Accepted: 07/22/2016] [Indexed: 11/16/2022]
Abstract
PURPOSE We have reported loss of SMAD4 promotes expression of CCL15 from colorectal cancer to recruit CCR1+ myeloid cells through the CCL15-CCR1 axis, which contributes to invasion and liver metastasis. However, the molecular mechanism of lung metastasis is yet to be elucidated. Our purpose is to determine whether similar mechanism is involved in the lung metastasis of colorectal cancer. EXPERIMENTAL DESIGN In a mouse model, we examined whether SMAD4 could affect the metastatic activity of colorectal cancer cells to the lung through the CCL15-CCR1 axis. We immunohistochemically analyzed expression of SMAD4, CCL15, and CCR1 with 107 clinical specimens of colorectal cancer lung metastases. We also characterized the CCR1+ myeloid cells using several cell-type-specific markers. RESULTS In a mouse model, CCL15 secreted from SMAD4-deficient colorectal cancer cells recruited CCR1+ cells, promoting their metastatic activities to the lung. Immunohistochemical analysis of lung metastases from colorectal cancer patients revealed that CCL15 expression was significantly correlated with loss of SMAD4, and that CCL15-positive metastases recruited approximately 1.9 times more numbers of CCR1+ cells than CCL15-negative metastases. Importantly, patients with CCL15-positive metastases showed a significantly shorter relapse-free survival (RFS) than those with CCL15-negative metastases, and multivariate analysis indicated that CCL15 expression was an independent predictor of shorter RFS. Immunofluorescent staining showed that most CCR1+ cells around lung metastases were tumor-associated neutrophil, although a minor fraction was granulocytic myeloid-derived suppressor cell. CONCLUSIONS CCL15-CCR1 axis may be a therapeutic target to prevent colorectal cancer lung metastasis. CCL15 can be a biomarker indicating poor prognosis of colorectal cancer patients with lung metastases. Clin Cancer Res; 23(3); 833-44. ©2016 AACR.
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Affiliation(s)
- Takamasa Yamamoto
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kenji Kawada
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
| | - Yoshiro Itatani
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Department of Pharmacology, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Moores UCSD Cancer Center, University of California, San Diego, La Jolla, California
| | - Susumu Inamoto
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Ryosuke Okamura
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masayoshi Iwamoto
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Ei Miyamoto
- Department of Thoracic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | | | - Hideyo Hirai
- Department of Transfusion Medicine and Cell Therapy, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Suguru Hasegawa
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hiroshi Date
- Department of Thoracic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Makoto M Taketo
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Department of Pharmacology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yoshiharu Sakai
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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23
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Sakanoue I, Hamakawa H, Okubo Y, Minami K, Miyamoto E, Shomura Y, Takahashi Y. Efficacy and safety of thoracoscopic pericardial window in patients with pericardial effusions: a single-center case series. J Cardiothorac Surg 2016; 11:92. [PMID: 27297223 PMCID: PMC4906769 DOI: 10.1186/s13019-016-0488-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [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: 04/09/2016] [Accepted: 06/04/2016] [Indexed: 11/10/2022] Open
Abstract
Background Pericardial effusion (PE) is a common finding in patients who had chronic cardiac failure, who had undergone cardiac surgery, or who had certain other benign and malignant diseases. PE ranges in severity from mild, asymptomatic effusions to cardiac tamponade. Although a thoracoscopic pericardial window (TPW) is a minimally invasive surgical option for patients with PE, there are few published data regarding the outcomes of TPW for PE. We investigated the contribution of the TPW to the treatment of PEs that are recurrent or difficult to drain percutaneously. Methods We conducted a retrospective chart review of the indications for TPW that included data on preoperative, intraoperative, and postoperative variables; morbidity; recurrence; and survival. Fourteen consecutive patients with PE that was recurrent or difficult to drain percutaneously and who underwent treatment with a TPW were enrolled in this study. Trocars for passage of the thoracoscope and surgical instruments were introduced through two or three incisions. Mini-thoracotomy was also performed in patients with hemopericardium and loculated fibrinous effusions. All patients were evaluated by face-to-face interviews, transthoracic echocardiography (TTE), and chest radiography 3–6 months after the TPW was obtained. Results The mean age of the patients was 70 years (range 28–83 years). The operative time was 72.1 ± 29.5 min. Six patients had undergone open heart surgery during the month prior to their presentation with PE. No intraoperative or postoperative complications occurred, although PE had recurred in one patient. Two patients died of malignant disease several months after the TPW. The cardiothoracic ratio (determined on chest radiographs) and the ejection fraction ratio (determined using TTE) had improved at the 3- and 6-month follow-up evaluations (p < 0.0001 and p = 0.012, respectively). Some patients could discontinue diuretics after the procedure, as assessed by the cardiologist based on symptom alleviation, chest radiography, and TTE findings. Conclusions For patients with PEs that are recurrent or difficult to drain percutaneously, TPW is an effective, safe surgical approach in terms of cardiac function and radiological findings.
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Affiliation(s)
- Ichiro Sakanoue
- Thoracic Surgery, Kobe City Medical Center General Hospital, 2-1-1 Minatojimaminami-machi, Chuo-ku, Kobe, 650-0047, Japan.
| | - Hiroshi Hamakawa
- Thoracic Surgery, Kobe City Medical Center General Hospital, 2-1-1 Minatojimaminami-machi, Chuo-ku, Kobe, 650-0047, Japan
| | - Yu Okubo
- Thoracic Surgery, Kobe City Medical Center General Hospital, 2-1-1 Minatojimaminami-machi, Chuo-ku, Kobe, 650-0047, Japan
| | - Kazuhiro Minami
- Thoracic Surgery, Kobe City Medical Center General Hospital, 2-1-1 Minatojimaminami-machi, Chuo-ku, Kobe, 650-0047, Japan
| | - Ei Miyamoto
- Thoracic Surgery, Graduate School of Medicine, Kyoto University Hospital, 54 Kawaracho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Yu Shomura
- Cardiovascular and Thoracic Surgery, Shingu Municipal Medical Center, 18-7 Hachibuse, Shingu, Wakayama, 647-0072, Japan
| | - Yutaka Takahashi
- Thoracic Surgery, Kobe City Medical Center General Hospital, 2-1-1 Minatojimaminami-machi, Chuo-ku, Kobe, 650-0047, Japan
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Tanaka S, Chen-Yoshikawa TF, Miyamoto E, Takahashi M, Ohata K, Kondo T, Hijiya K, Motoyama H, Aoyama A, Date H. Vascular Endothelial-Cadherin Expression After Reperfusion Correlates With Lung Injury in Rat Lung Transplantation. Ann Thorac Surg 2016; 101:2161-7. [DOI: 10.1016/j.athoracsur.2016.01.040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Revised: 12/04/2015] [Accepted: 01/11/2016] [Indexed: 10/21/2022]
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Miyamoto E, Sato M, Motoyama H, Aoyama A, Menju T, Shikuma K, Sowa T, Saito M, Takahagi A, Tanaka S, Takahashi M, Ohata K, Kondo T, Hijiya K, Chen-Yoshikawa T, Sato T, Sonobe M, Date H. Intrapulmonary Local Production of Antibodies Specific to Donor Major Histocompatibility Complex Class I in Association with the Progression of Chronic Rejection in Lung Allografts. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.296] [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: 11/26/2022] Open
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Takahashi M, Chen-Yoshikawa T, Saito M, Tanaka S, Miyamoto E, Takahagi A, Ohata K, Kondo T, Motoyama H, Hijiya K, Aoyama A, Date H. Lung Storage in Hydrogen-Rich Saline Attenuates Lung Ischemia-Reperfusion Injury. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.398] [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: 11/26/2022] Open
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Takahagi A, Chen-Yoshikawa T, Kondo T, Saito M, Tanaka S, Miyamoto E, Takahashi M, Ohata K, Motoyama H, Hijiya K, Aoyama A, Date H, Date H. Intermediate-Term Change of Pulmonary Function and Lung Volume after Bilateral Living Donor Lobar Lung Transplantation. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.892] [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: 10/21/2022] Open
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Miyoshi R, Sonobe M, Miyamoto E, Date H. Completely resected follicular dendritic cell sarcoma of the posterior mediastinum: report of a case. Surg Case Rep 2016; 2:28. [PMID: 27001632 PMCID: PMC4801832 DOI: 10.1186/s40792-016-0155-4] [Citation(s) in RCA: 4] [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: 08/12/2015] [Accepted: 03/15/2016] [Indexed: 12/30/2022] Open
Abstract
Follicular dendritic cell sarcoma is a rare malignant neoplasm originating from follicular dendritic cells, and most of them develop in lymph nodes of the head and neck. One third of follicular dendritic cell sarcomas occur in the extranodal sites such as the tonsils, mesentery, and retroperitoneal organs, but those of mediastinal origin are rare. Here, we present the case of a 16-year-old female with a large follicular dendritic cell sarcoma of posterior mediastinal origin. The tumor was found by a chest X-ray mass examination at her high school, and she had no subjective symptoms or significant past medical history. The tumor was diagnosed as a follicular dendritic cell sarcoma by computed tomography-guided needle biopsy. Although the tumor compressed the mediastinal organs and showed moderate uptake in 18-fluorodeoxyglucose positron emission tomography imaging, it was completely resected through posterolateral incision. Histological examination revealed that spindle-shaped tumor cells formed fascicular or storiform pattern with cellular pleomorphism. By immunohistochemical examination, the tumor cells were found to be positive for CD21 and follicular dendritic cell antigen. Two years after surgery, the patient remains alive with no signs of tumor recurrence.
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Affiliation(s)
- Ryo Miyoshi
- Department of Thoracic Surgery, Kyoto University Hospital, Shogoin-Kawara-cho 54, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Makoto Sonobe
- Department of Thoracic Surgery, Kyoto University Hospital, Shogoin-Kawara-cho 54, Sakyo-ku, Kyoto, 606-8507, Japan.
| | - Ei Miyamoto
- Department of Thoracic Surgery, Kyoto University Hospital, Shogoin-Kawara-cho 54, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Hiroshi Date
- Department of Thoracic Surgery, Kyoto University Hospital, Shogoin-Kawara-cho 54, Sakyo-ku, Kyoto, 606-8507, Japan
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Date H, Miyamoto E, Sato M, Yamada T. eReply. Re: Tracheobronchial trauma in lung transplantation: ethical considerations. Interact Cardiovasc Thorac Surg 2015. [DOI: 10.1093/icvts/ivv208] [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: 11/14/2022] Open
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Miyamoto E, Sato M, Yamada T, Date H. Successful bilateral lung transplantation from a deceased donor with a ruptured main bronchus. Interact Cardiovasc Thorac Surg 2015; 21:396-8. [PMID: 26091697 DOI: 10.1093/icvts/ivv161] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [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: 03/18/2015] [Accepted: 05/27/2015] [Indexed: 11/12/2022] Open
Abstract
Major tracheobronchial trauma may lead to underestimation of the potential for lung donation due to insufficient alveolar ventilation and resulting poor oxygenation, bronchoscopic findings and radiographic findings (e.g. atelectasis). Here, we report a case of successful bilateral lung transplantation from a deceased donor whose right bronchus was ruptured by a trauma from the main bronchus to the bronchus intermedius. Although poor oxygenation and a collapsed right lung detected by computed tomography scanning precluded the use of the donor lungs by multiple transplant centres, careful bronchoscopic evaluation and intraoperative assessment convinced us that the parenchyma of the donor lungs was preserved sufficiently well for transplantation. Upon transplantation, the donor right bronchus was anastomosed at two levels, the upper lobe bronchus and the bronchus intermedius, and the lacerated portion was removed. The recipient's postoperative course was uneventful and the bronchial anastomoses healed excellently. Careful preoperative evaluation and appropriate surgical techniques might enable successful lung transplantation, using seemingly suboptimal donor lungs with major airway trauma.
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Affiliation(s)
- Ei Miyamoto
- Department of Thoracic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Msasaaki Sato
- Department of Thoracic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Tetsu Yamada
- Department of Thoracic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hiroshi Date
- Department of Thoracic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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Chen F, Miyamoto E, Takemoto M, Minakata K, Yamada T, Sato M, Aoyama A, Date H. Right and left inverted lobar lung transplantation. Am J Transplant 2015; 15:1716-21. [PMID: 25846520 DOI: 10.1111/ajt.13148] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [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: 10/02/2014] [Revised: 11/14/2014] [Accepted: 12/07/2014] [Indexed: 01/25/2023]
Abstract
Adult recipients frequently withdraw from living-donor lobar lung transplantation because of the small size of donor grafts. The right lower lobe is 120% larger than the left lower lobe. We developed a novel surgical technique in which an inverted right lower lobe graft can be transplanted into the left thorax. The first patient was a 43-year-old woman with end-stage idiopathic interstitial pneumonia. Her husband was the only eligible donor for living-donor lobar lung transplantation. His right lower lobe was estimated to provide 45% of the recipient's predicted forced vital capacity, which would provide the borderline function required for living-donor lobar lung transplantation. Since lung perfusion scintigraphy of the recipient showed a right-to-left ratio of 64:36, transplanting the right lower lobe graft into the left thorax and sparing the native right lung was considered the only treatment option. We simulated this procedure using three-dimensional models produced by a three-dimensional printer. In living-donor lobar lung transplantation, all anastomoses were performed smoothly as planned preoperatively. Because of the initial success, this procedure was performed successfully in two additional patients. This procedure enables larger grafts to be transplanted, potentially solving critical size matching problems in living-donor lobar lung transplantation.
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Affiliation(s)
- F Chen
- Department of Thoracic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - E Miyamoto
- Department of Thoracic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - M Takemoto
- Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - K Minakata
- Department of Cardiovascular Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - T Yamada
- Department of Thoracic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - M Sato
- Department of Thoracic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - A Aoyama
- Department of Thoracic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - H Date
- Department of Thoracic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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Miyamoto E, Chen F, Aoyama A, Sato M, Yamada T, Date H. Unilateral chronic lung allograft dysfunction is a characteristic of bilateral living-donor lobar lung transplantation. Eur J Cardiothorac Surg 2014; 48:463-9. [PMID: 25468952 DOI: 10.1093/ejcts/ezu463] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [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: 08/17/2014] [Accepted: 10/27/2014] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVES Living-donor lobar lung transplantation (LDLLT) has been established as a life-saving procedure for critically ill patients who cannot wait for cadaveric lung transplantation. Chronic lung allograft dysfunction (CLAD) is the main cause of late morbidity and mortality in lung transplantation. Studies on CLAD in cadaveric lung transplantation have been extensively reported, but few reports have been reported concerning CLAD after LDLLT. The aim of this study was to determine the prevalence, characteristics and prognosis of CLAD after LDLLT. METHODS Among 38 patients who survived more than 3 months after LDLLT at Kyoto University Hospital between June 2008 and December 2013, 8 patients (21%) were diagnosed with CLAD. The mean follow-up period after LDLLT was 33 months. Clinical course, pulmonary function and radiological findings were reviewed retrospectively in all the 38 patients as of May 2014. RESULTS Six patients were female and 2 were male. The median age at LDLLT was 31 years, and the median interval between LDLLT and the initial diagnosis of CLAD was 23 months. Among 8 patients who developed CLAD, 2 patients underwent right single LDLLT and 6 patients underwent bilateral LDLLT. The former 2 patients survived 44 and 47 months after the treatment. Five out of 6 patients with bilateral LDLLT developed unilateral CLAD at the time of initial diagnosis according to ventilation scintigraphy. In 3 of these 5 patients, the progression of CLAD was halted by treatment, and the median follow-up period of 33 months after treatment. In the remaining 2 of 5 patients, CLAD progressed to the contralateral lung metachronously; 1 patient survived without oxygen supplement, but the other patient required reperformance of LDLLT 3 years after the first one. One patient with bilateral CLAD at the time of detection died of disease progression 4 years after LDLLT. CONCLUSIONS Despite a relatively short observation time, CLAD developed in approximately one-fifth of the patients who survived more than 3 months after LDLLT. In bilateral LDLLT, CLAD developed unilaterally in most cases, which might be beneficial in the long term because the unaffected contralateral lung may function as a reservoir.
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Affiliation(s)
- Ei Miyamoto
- Department of Thoracic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Fengshi Chen
- Department of Thoracic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Akihiro Aoyama
- Department of Thoracic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masaaki Sato
- Department of Thoracic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Tetsu Yamada
- Department of Thoracic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hiroshi Date
- Department of Thoracic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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Miyamoto E, Chen F, Yamada T, Sato M, Aoyama A, Date H. O-103 * BRONCHIOLITIS OBLITERANS SYNDROME IN LIVING-DONOR LOBAR LUNG TRANSPLANTATION. Interact Cardiovasc Thorac Surg 2014. [DOI: 10.1093/icvts/ivu167.103] [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: 11/15/2022] Open
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Taguchi T, Akimaru K, Yamasakt M, Ryu S, Miyamoto E, Takano Y, Sato A. Isolation of highly purified rat cerebral lysosomes using percoll gradients with a variety of calcium concentrations. Environ Health Prev Med 2012; 4:217-20. [PMID: 21432488 DOI: 10.1007/bf02931261] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [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: 02/04/1999] [Accepted: 11/01/1999] [Indexed: 11/28/2022] Open
Abstract
We were able to isolate a lysosomal fraction from rat brain which had a higher degree of purity than in previous studies with good recovery. This has been made possible by using percoll gradients following the swelling of mitochondria in the presence of calcium which would eliminate contamination from small amounts of mitochondria. By using percoll density gradient centrifugation after the swelling of mitochondria in the presence of calcium, cerebral lysosomes were purified 312-fold with the recovery of approximately 22 %, which is the highest reported for any cerebral lysosomal preparation. The most effective procedure for the separation was achieved by using 1.25 mM calcium incubation with post nuclear fraction. As brain lysosomes may play a major role not only in degrading macromolecules but also in their transport to the deposition site, obtaining purified rat cerebral lysosomes represents an important step in the study of the generation of macromolecules which accumulate in the brain.
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Affiliation(s)
- T Taguchi
- Department of Environmental and Occupational Health, Kochi Medical School, 783-8505, Kochi, Japan
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Abstract
Abstract
The haemolytic action of various N-alkyl derivatives (lauryl; C12H25-, myristyl; C14H29-, palmityl; C16H33-) of 1,3-diaminopropane, 1,4-diaminobutane, 1,5-diaminopentane, 1,6-diaminohexane, 1,7-diaminoheptane, 1,8-diaminooctane was examined using rabbit red blood cells. The activities of the various derivatives were compared with those of antiplaque agents commonly used as mouthwashes; cetylpyridinium chloride (CP) and chlorhexidine acetate (CH). The haemolytic activities of these agents were dependent on the length of the N-alkyl chain, whereas the number of methylene groups between the nitrogen atoms had little effect. The order of potency was CP, N-palmityl derivatives, N-myristyl derivatives > N-lauryl derivatives > CH which was similar to the order of the antiplaque effect evaluated in-vitro.
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Affiliation(s)
- E Miyamoto
- School of Pharmacy, Hokuriku University, Kanazawa, Japan
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Nakano K, Miyamoto E, Tamura K, Nemoto H, Fujita K, Nomura R, Ooshima T. Distribution of 10 periodontal bacterial species in children and adolescents over a 7-year period. Oral Dis 2008; 14:658-64. [DOI: 10.1111/j.1601-0825.2008.01452.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Nakano K, Inaba H, Nomura R, Nemoto H, Tamura K, Miyamoto E, Yoshioka H, Taniguchi K, Amano A, Ooshima T. Detection and serotype distribution of Actinobacillus actinomycetemcomitans in cardiovascular specimens from Japanese patients. ACTA ACUST UNITED AC 2007; 22:136-9. [PMID: 17311638 DOI: 10.1111/j.1399-302x.2007.00332.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Actinobacillus actinomycetemcomitans, an important pathogen in periodontitis, has also been detected in cardiovascular tissues. Sixty heart valves were collected during valve replacement surgery from 60 patients (one from each), 10 were from patients with infective endocarditis (IE group) and 50 were from patients with other valvular diseases (non-IE group). In addition, 46 samples of aneurysmal tissue were taken from 46 patients with a thoracic or abdominal aneurysm (Aneurysm group, one from each). Dental plaque samples were taken from 54 of the patients, 31 in the IE and non-IE groups and 23 in the aneurysm group. First, the distribution of A. actinomycetemcomitans in all specimens was analysed using a polymerase chain reaction method, which resulted in a positive reaction in 33 (31.1%) of the cardiovascular specimens and 25 (46.3%) of the dental plaque samples. Next, using serotype-specific sets of primers, the serotype distribution of A. actinomycetemcomitans in the cardiovascular specimens and dental plaque samples was found to be significantly different compared to dental plaque samples from Japanese subjects reported previously.
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Affiliation(s)
- K Nakano
- Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
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Kaitsuka T, Fukunaga K, Soeda F, Shirasaki T, Miyamoto E, Takahama K. Changes in Ca(2+)/calmodulin-dependent protein kinase II activity and its relation to performance in passive avoidance response and long-term potentiation formation in mice prenatally exposed to diethylstilbestrol. Neuroscience 2006; 144:1415-24. [PMID: 17184923 DOI: 10.1016/j.neuroscience.2006.10.051] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2005] [Revised: 10/09/2006] [Accepted: 10/14/2006] [Indexed: 10/23/2022]
Abstract
We investigated the effects of prenatal exposure to diethylstilbestrol (DES), an endocrine disrupter on learning behavior and synaptic functions. Specifically, we determined the activity of Ca(2+)/calmodulin-dependent protein kinase II (CaMKII) and related kinases that play an essential role in long-term potentiation (LTP) in the hippocampus in mice that were prenatally exposed to DES. Treatment with DES resulted in increased CaMKII autophosphorylation and Ca(2+)-independent activity in the hippocampus and cortex of male mice. Impaired passive avoidance correlated with this increased CaMKII autophosphorylation, as did the enhanced early phase of LTP (E-LTP) in hippocampus. These data suggest that prenatal exposure to DES induces deficits in passive avoidance responses as a result of increased CaMKII activity and hippocampal LTP.
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Affiliation(s)
- T Kaitsuka
- Department of Environmental and Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Kumamoto 862-0973, Japan
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Affiliation(s)
- K. Tani
- a Department of Chemistry and Biotechnology, Faculty of Engineering , Yamanashi University , Takeda 4-3-11, Kofu , 400-8511 , Japan
| | - E. Miyamoto
- a Department of Chemistry and Biotechnology, Faculty of Engineering , Yamanashi University , Takeda 4-3-11, Kofu , 400-8511 , Japan
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Abilez O, Benharash P, Mehrotra M, Miyamoto E, Picquet J, Xu C, Zarins C. A new culture system shows that stem cells can be grown in 3-D and under physiologic pulsatile conditions for tissue engineering of vascular grafts. J Surg Res 2006. [DOI: 10.1016/j.jss.2005.11.298] [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: 11/27/2022]
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Nakao S, Nagata A, Miyamoto E, Masuzawa M, Murayama T, Shingu K. Inhibitory effect of propofol on ketamine-induced c-Fos expression in the rat posterior cingulate and retrosplenial cortices is mediated by GABAA receptor activation. Acta Anaesthesiol Scand 2003; 47:284-90. [PMID: 12648194 DOI: 10.1034/j.1399-6576.2003.00040.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND Non-competitive N-methyl-D-aspartate (NMDA) receptor antagonists, including ketamine, have psychotomimetic activities and cause neuronal damage in the posterior cingulate and retrosplenial cortices (PC/RS), which are suggested to be the brain regions responsible for their psychotomimetic activities. We previously demonstrated that ketamine induced marked c-Fos (c-fos protein) expression in the rat PC/RS, which was inhibited by propofol, and the expression was closely related to ketamine-induced abnormal behavior. In the present study, we investigated whether the inhibition by propofol was mediated by GABAA receptor receptor activation. METHODS Using Wistar rats, propofol alone, propofol with bicuculline or propofol with flumazenil was injected intravenously and then continuously infused. Fifteen minutes later, 100 mg kg-1 of ketamine or normal saline was injected intraperitoneally. Two hours after the ketamine or saline injection, the brain was extracted and brain sections were prepared, and c-Fos expression was detected using immunohistochemical methods. RESULTS Ketamine induced marked c-Fos expression in the PC/RS (171 +/- 9/0.4 mm2), which was significantly inhibited by propofol (5 +/- 5/0.4 mm2). The inhibition by propofol was disinhibited dose-dependently by both bicuculline (0.5 and 1.0 mg kg-1 bicuculline groups: 46 +/- 15 and 143 +/- 16, respectively) and flumazenil (0.1 and 1.0 mg kg-1 flumazenil groups: 79 +/- 6 and 130 +/- 15, respectively). CONCLUSION These results demonstrate that the inhibitory effect of propofol on ketamine-induced c-Fos expression in the PC/RS is mediated by GABAA receptor activation, and suggests that ketamine-induced psychoneuronal adverse effects may be suppressed by propofol via the activation of GABAA receptors.
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Affiliation(s)
- S Nakao
- Department of Anesthesiology, Kansai Medical University, Moriguchi, Osaka, Japan.
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Miyamoto E, Fukunaga K, Takeuchi Y, Yamamoto H, Kasahara J, Liu J. [Calcium signaling and brain functions]. Nihon Yakurigaku Zasshi 2002; 120:1P-5P. [PMID: 12491766] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
Calcium signaling plays a critical role in various cell types by activation of receptors and Ca2+ channels in response to neurotransmitters, hormones, growth, factors etc. Although a variety of functions of intracellular Ca2+ are reported, Ca2+/calmodulin-dependent protein kinases (CaMK) are involved in their mediation. We have been studying on CaMK I, II, III, IV and K in the dynamic regulation in the cells in relation to functions. In this study, we elucidated the structures of the isoforms of CaMKII subunits with nuclear translocation signal (NTS). NTS is included in the variable domain following the regulatory domain with a sequence of KKRK. The isoforms of CaMK subunits such as alpha B, gamma A, gamma A.B, delta 3 and delta 7 contain NTS in the sequences of the structures. Transfection of the isoforms with NTS into NG108-15 cells stimulated the expression of brain-derived neurotrophic factor in the cytoplasm. Activation of CaMKII and IV and mitogen-activated protein kinase (MAPK) was observed during long-term potentiation (LTP) induction in the CA1 area of hippocampus. The activation of CaMKII was sustained for a long period, whereas that of CaMKIV and MAPK was transient. The results suggest that CaMKII is involved in LTP induction, while CaMKIV and MAPK are rather involved in LTP maintenance. We present and discuss our recent studies on regulation of CaMKs in neuronal functions.
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Affiliation(s)
- E Miyamoto
- Department of Pharmacology, Kumamoto University School of Medicine, Kumamoto 860-0811, Japan
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Abstract
A case of paraneoplastic syndrome accompanied by two types of cancer is reported. The patient was a 62 year old man who progressively developed cerebellar ataxia, especially an abnormal gait. The anti-Hu antibody titre was high. A small tumour was detected in the middle lobe of the right lung and was surgically treated. The histology was adenocarcinoma. After lobectomy, however, the ataxia deteriorated, and plasma exchange, 250 ml/kg/day, was conducted for 6 days. After plasma exchange, the anti-Hu antibody titre decreased and the ataxia temporarily ceased to progress. A week after the last plasma exchange, a mass appeared in the anterior cervical region and rapidly increased in size. The biopsy of the neck tumour disclosed a small cell carcinoma. Five months later small cell carcinoma appeared in the left lung. This case shows the importance of searching for small cell carcinoma when anti-Hu antibodies are detected. It is assumed that plasma exchange removed not only a pathogenic factor of ataxia but also a factor which inhibited the growth of the small cell carcinoma. It is recommended that plasmapheresis should be performed with caution in paraneoplastic syndrome when the origin of a tumour is obscure.
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Affiliation(s)
- K Miyamoto
- Department of Immunology, National Institution, NCNP, Kodaira, Tokyo 187--8502, Japan.
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Miyamoto E, Tomimoto H, Nakao Si S, Wakita H, Akiguchi I, Miyamoto K, Shingu K. Caudoputamen is damaged by hypocapnia during mechanical ventilation in a rat model of chronic cerebral hypoperfusion. Stroke 2001; 32:2920-5. [PMID: 11739996 DOI: 10.1161/hs1201.100216] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND AND PURPOSE Postoperative brain dysfunction, such as delirium, is a common complication of anesthesia and is sometimes prolonged, especially in patients with cerebrovascular disease. In the present study we investigated the effect of hypocapnia during anesthesia on neuronal damage using a rat model of chronic cerebral hypoperfusion. METHODS Chronic cerebral hypoperfusion was induced by clipping the bilateral common carotid arteries in male Wistar rats. Fourteen days after the operation, these animals were mechanically ventilated for 2 hours and then kept in suitable conditions for an additional 14 days. Twenty-four rats were assigned to 4 groups: those with chronic cerebral hypoperfusion with either hypocapnia or normocapnia during anesthesia, and those given sham operation with either hypocapnia or normocapnia. White matter lesions in the brain sections were evaluated with Klüver-Barrera staining. Proliferation of glial cells was estimated with the use of immunohistochemistry of glial fibrillary acidic protein, a marker for astroglia, and CD11b, a marker for microglia. Computer-assisted morphometry was applied to the immunohistochemical results of microtubule-associated protein 2 to evaluate the loss of neurons. RESULTS The histological damage was localized almost exclusively in the white matter in the rats subjected to chronic cerebral hypoperfusion but without hypocapnia. Neuronal damage and astroglial proliferation occurred with aggravated white matter lesions in the caudoputamen in the rats with chronic cerebral hypoperfusion and hypocapnia. No lesions were observed in sham-operated rats with either hypocapnia or normocapnia. CONCLUSIONS These results indicate that hypocapnia during anesthesia causes tissue damage in the caudoputamen, which may be responsible for long-lasting postoperative delirium in patients with stroke and/or dementia.
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Affiliation(s)
- E Miyamoto
- Department of Anesthesiology, Kansai Medical University, Osaka, Japan.
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Watanabe F, Miyamoto E, Nakano Y. Inactive corrinoid-compound significantly decreases in Spirulina platensis grown in a cobalt-deficient medium. J Agric Food Chem 2001; 49:5685-5688. [PMID: 11714378 DOI: 10.1021/jf010733i] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Spirulina platensis NIES-39 was grown under open culture system in the presence or absence of CoSO(4) (12 microg/L) and/or vitamin B(12) (10 microg/L) to confirm whether CoSO(4) and/or vitamin B(12) stimulate or are essential for growth of the algal cells and for accumulation of vitamin B(12). The addition of CoSO(4) and/or vitamin B(12) could not affect both cell growth and cell yield of the alga. The amount of corrinoid-compound was increased significantly by the addition of CoSO(4) but not by vitamin B(12). A C18 reversed-phase HPLC pattern of the Spirulina corrinoid-compound increased by the addition of CoSO(4) was identical to that of authentic pseudovitamin B(12), which is inactive for human. These results indicate that the algal cells grown in the absence of CoSO(4) are suitable for use of human health foods because the inactive corrinoid-compound can be reduced significantly.
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Affiliation(s)
- F Watanabe
- Department of Health Science, Kochi Women's University, Kochi 780-8515, Japan.
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Kawano T, Fukunaga K, Takeuchi Y, Morioka M, Yano S, Hamada J, Ushio Y, Miyamoto E. Neuroprotective effect of sodium orthovanadate on delayed neuronal death after transient forebrain ischemia in gerbil hippocampus. J Cereb Blood Flow Metab 2001; 21:1268-80. [PMID: 11702042 DOI: 10.1097/00004647-200111000-00003] [Citation(s) in RCA: 79] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
In transient forebrain ischemia, sodium orthovanadate as well as insulinlike growth factor-1 (IGF-1) rescued cells from delayed neuronal death in the hippocampal CA1 region. Adult Mongolian gerbils were subjected to 5-minute forebrain ischemia. Immunoblotting analysis with anti-phospho-Akt/PKB (Akt) antibody showed that phosphorylation of Akt at serine-473 (Akt-Ser-473) in the CA1 region decreased immediately after reperfusion, and in turn transiently increased 6 hours after reperfusion. The decreased phosphorylation of Akt-Ser-473 was not observed in the CA3 region. The authors then tested effects of intraventricular injection of orthovanadate and IGF-1, which are known to activate Akt. Treatment with orthovanadate or IGF-1 30 minutes before ischemia blocked delayed neuronal death in the CA1 region. The neuroprotective effects of orthovanadate and IGF-1 were associated with preventing decreased Akt-Ser-473 phosphorylation in the CA1 region observed immediately after reperfusion. Immunohistochemical studies with the anti-phospho-Akt-Ser-473 antibody also demonstrated that Akt was predominantly in the nucleus and was moderately activated in the cell bodies and dendrites of pyramidal neurons after orthovanadate treatment. The orthovanadate treatment also prevented the decrease in phosphorylation of mitogen-activated protein kinase (MAPK). Pretreatment with combined blockade of phosphatidylinositol 3-kinase and MAPK pathways totally abolished the orthovanadate-induced neuroprotective effect. These results suggest that the activation of both Akt and MAPK activities underlie the neuroprotective effects of orthovanadate on the delayed neuronal death in the CA1 region after transient forebrain ischemia.
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Affiliation(s)
- T Kawano
- Department of Pharmacology, Kumamoto University School of Medicine, Kumamoto, Japan
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Irie T, Miyamoto E, Kitagawa K, Maruyama Y, Inoue K, Inagaki C. An anxiolytic agent, dihydrohonokiol-B, inhibits ammonia-induced increases in the intracellular Cl(-) of cultured rat hippocampal neurons via GABA(c) receptors. Neurosci Lett 2001; 312:121-3. [PMID: 11595349 DOI: 10.1016/s0304-3940(01)02201-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The effects of an anxiolytic honokiol derivative, dihydrohonokiol-B (DHH-B) [3'-(2-propenyl)-5-propyl-(1,1'-biphenyl)-2,4'-diaol], on ammonia-induced increases in the intracellular Cl(-) concentration ([Cl(-)](i)) were examined using primary cultured rat hippocampal neurons. DHH-B (1-100 ng/ml), but not an inactive isomer of honokiol, magnolol (100 ng/ml), dose-dependently inhibited the ammonia-induced increases in [Cl(-)](i) without any changes in the control [Cl(-)](i). Such an effect of DHH-B was blocked by a gamma-aminobutylic acid A (GABA(A)) and GABA(C) Cl(-) channel blocker, 100 microM picrotoxin, and a GABA(C) receptor blocker, 10 microM (1,2,5,6-tetrahydropyridine-4-yl)methylphosphinic acid, but not by a GABA(A) receptor blocker, 10 microM bicuculline. Further, a GABA(C) receptor agonist, 200 microM cis-4-aminocrotonic acid, but not a GABA(A) receptor agonist, 10 microM muscimol, mimicked the effect of DHH-B. Thus, DHH-B appears to protect neurons from the ammonia-induced increases in [Cl(-)](i) through GABA(C) receptor stimulation.
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Affiliation(s)
- T Irie
- Department of Pharmacology, Kansai Medical University, 10-15 Fumizono-Cho, Moriguchi City, Osaka 570-8506, Japan
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Morioka M, Fukunaga K, Kai Y, Todaka T, Yano S, Hamada J, Miyamoto E, Ushio Y. Intravenously injected FK506 failed to inhibit hippocampal calcineurin. Biochem Biophys Res Commun 2001; 286:802-6. [PMID: 11520068 DOI: 10.1006/bbrc.2001.5468] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
FK506 (tacrolimus) is known as an inhibitor for calcineurin and is used in numerous research fields. It is not clear whether intravenously injected FK506 inhibits neuronal calcineurin. We measured the calcineurin activities of normal and postischemic rat hippocampi after intravenous injection of FK506 (3 mg/kg). Intravenously injected FK506 had no inhibitory effect on calcineurin activity in the hippocampi of normal and postischemic rats, whereas FK506 inhibited the calcineurin in vitro (purified enzyme, hippocampal homogenate, and hippocampal slice culture homogenate). Thus, it is considered that intravenously injected FK506 does not act on intraneuronal calcineurin and that several effects of FK506 are not due to the inhibition of neuronal calcineurin.
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Affiliation(s)
- M Morioka
- Department of Neurosurgery, Kumamoto University School of Medicine, Kumamoto, Japan.
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Hasegawa H, Nakai M, Tanimukai S, Taniguchi T, Terashima A, Kawamata T, Fukunaga K, Miyamoto E, Misaki K, Mukai H, Tanaka C. Microglial signaling by amyloid beta protein through mitogen-activated protein kinase mediating phosphorylation of MARCKS. Neuroreport 2001; 12:2567-71. [PMID: 11496150 DOI: 10.1097/00001756-200108080-00055] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Myristoylated alanine-rich C kinase substrate (MARCKS), an acidic protein associated with cell motility and phagocytosis, is activated upon phosphorylation by protein kinase C (PKC) and proline-directed protein kinases. In Alzheimer disease (AD), activated microglia expressing MARCKS migrates around senile plaques. We reported that amyloid beta protein (A beta), a major component of senile plaques, activated MARCKS through a tyrosine kinase and PKC-delta. We have now identified another A beta signaling pathway through a mitogen-activated protein kinase (MAPK) involved in the phosphorylation of MARCKS and analysed cross-talk between PKC and MAPK pathways in primary cultured rat microglia. A selective inhibitor for MAPK kinase, PD098059, significantly inhibited the phosphorylation of MARCKS induced by A beta. Extracellulary regulated kinases, the activities of which were induced by A beta, directly phosphorylated a recombinant MARCKS in vitro. The MAPK pathway was sensitive to wortmannin, but not to a PKC inhibitor or to tyrosine kinase inhibitors. The activation of PKC by A beta was not sensitive to wortmannin. Our findings suggest involvement of the MAPK pathway through phosphoinositol 3-kinase in the phosphorylation of MARCKS in rat cultured microglia, an event may be associated with mechanisms activating microglia in AD.
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Affiliation(s)
- H Hasegawa
- Hyogo Institute for Aging Brain and Cognitive Disorders, 520 Saisho-ko, Himeji 670-0981, Japan
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Yonehara T, Kanasaki H, Yamamoto H, Fukunaga K, Miyazaki K, Miyamoto E. Involvement of mitogen-activated protein kinase in cyclic adenosine 3',5'-monophosphate-induced hormone gene expression in rat pituitary GH(3) cells. Endocrinology 2001; 142:2811-9. [PMID: 11416000 DOI: 10.1210/endo.142.7.8226] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
We examined whether mitogen-activated protein (MAP) kinase was activated by stimulation of the cAMP pathway and whether MAP kinase activation was involved in synthesis of PRL and GH in GH(3) cells. Treatment of the cells with a cAMP analog, 8-(4-chlorophenylthio)cAMP (CPT-cAMP), activated MAP kinase and increased PRL at both the protein and messenger RNA levels. The protein and messenger RNA of GH were decreased by the treatment. We constructed the luciferase reporter genes after the promoters of PRL and GH and found the activation of both promoters by the CPT-cAMP treatment. We confirmed that overexpression of the catalytic subunit of cAMP-dependent protein kinase had essentially the same effects on MAP kinase activation and synthesis of PRL and GH as the CPT-cAMP treatment. Furthermore, treatment of the cells with pituitary adenylate cyclase-activating polypeptide 27 activated MAP kinase. The activation of PRL promoter by CPT-cAMP and pituitary adenylate cyclase-activating polypeptide 27 was abolished by pretreatment with PD098059 and H89. Although the increase in PRL and GH secretion by CPT-cAMP was inhibited by H89, PD098059 had no effect on secretion. These results suggest that cAMP-induced MAP kinase activation is essential for PRL gene expression, but not for secretion of PRL and GH.
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Affiliation(s)
- T Yonehara
- Department of Pharmacology, Kumamoto University School of Medicine, Kumamoto 860-0811, Japan
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