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Okano H, Yamamoto R, Iwasaki Y, Irimada D, Konno D, Tanaka T, Oishi T, Nawa H, Yano A, Taniguchi H, Otawara M, Matsuoka A, Yamauchi M. External validation of the HACOR score and ROX index for predicting treatment failure in patients with coronavirus disease 2019 pneumonia managed on high-flow nasal cannula therapy: a multicenter retrospective observational study in Japan. J Intensive Care 2024; 12:7. [PMID: 38360681 PMCID: PMC10870626 DOI: 10.1186/s40560-024-00720-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 02/07/2024] [Indexed: 02/17/2024] Open
Abstract
BACKGROUND The HACOR score for predicting treatment failure includes vital signs and acid-base balance factors, whereas the ROX index only considers the respiratory rate, oxygen saturation, and fraction of inspired oxygen (FiO2). We aimed to externally validate the HACOR score and ROX index for predicting treatment failure in patients with coronavirus disease 2019 (COVID-19) on high-flow nasal cannula (HFNC) therapy in Japan. METHODS This retrospective, observational, multicenter study included patients, aged ≥ 18 years, diagnosed with COVID-19 and treated with HFNC therapy between January 16, 2020, and March 31, 2022. The HACOR score and ROX index were calculated at 2, 6, 12, 24, and 48 h after stating HFNC therapy. The primary outcome was treatment failure (requirement for intubation or occurrence of death within 7 days). We calculated the area under the receiver operating characteristic curve (AUROC) and assessed the diagnostic performance of these indicators. The 2-h time-point prediction was considered the primary analysis and that of other time-points as the secondary analysis. We also assessed 2-h time-point sensitivity and specificity using previously reported cutoff values (HACOR score > 5, ROX index < 2.85). RESULTS We analyzed 300 patients from 9 institutions (median age, 60 years; median SpO2/FiO2 ratio at the start of HFNC therapy, 121). Within 7 days of HFNC therapy, treatment failure occurred in 127 (42%) patients. The HACOR score and ROX index at the 2-h time-point exhibited AUROC discrimination values of 0.63 and 0.57 (P = 0.24), respectively. These values varied with temporal changes-0.58 and 0.62 at 6 h, 0.70 and 0.68 at 12 h, 0.68 and 0.69 at 24 h, and 0.75 and 0.75 at 48 h, respectively. The 2-h time-point sensitivity and specificity were 18% and 91% for the HACOR score, respectively, and 3% and 100% for the ROX index, respectively. Visual calibration assessment revealed well calibrated HACOR score, but not ROX index. CONCLUSIONS In COVID-19 patients receiving HFNC therapy in Japan, the predictive performance of the HACOR score and ROX index at the 2-h time-point may be inadequate. Furthermore, clinicians should be mindful of time-point scores owing to the variation of the models' predictive performance with the time-point. Trial registration UMIN (registration number: UMIN000050024, January 13, 2023).
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Affiliation(s)
- Hiromu Okano
- Department of Critical Care Medicine, St. Luke's International Hospital, 9-1 Akashi-Cho, Chuo-Ku, Tokyo, 104-8560, Japan
- Department of Social Medical Sciences, Graduate School of Medicine, International University of Health and Welfare, 4-1-26 Akasaka, Minato-Ku, Tokyo, 107-8402, Japan
| | - Ryohei Yamamoto
- Center for Innovative Research for Communities and Clinical Excellence (CIRC2LE), Fukushima Medical University, Fukushima, 960-1295, Japan.
| | - Yudai Iwasaki
- Department of Anesthesiology and Perioperative Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-Machi, Aoba-Ku, Sendai City, Miyagi, 980-8574, Japan
| | - Daisuke Irimada
- Department of Anesthesiology and Perioperative Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-Machi, Aoba-Ku, Sendai City, Miyagi, 980-8574, Japan
| | - Daisuke Konno
- Department of Anesthesiology and Perioperative Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-Machi, Aoba-Ku, Sendai City, Miyagi, 980-8574, Japan
| | - Taku Tanaka
- Department of Emergency and Critical Care Medicine, Nagoya University Graduate School of Medicine, Tsurumai-Cho 65, Syowa-Ku, Nagoya City, Aichi, 466-8550, Japan
| | - Takatoshi Oishi
- Department of Emergency and Critical Care Medicine, Jichi Medical University Saitmta Medical Center, 1-847, Amanuma-Cho, Oomiya-Ku, Saitama City, Saitama, 330-8503, Japan
| | - Hiroki Nawa
- Department of Intensive Care Medicine, Kameda Medical Center, 929 Higashi-Cho, Kamogawa, Chiba, 296-8602, Japan
| | - Akihiko Yano
- Department of General Medicine, Kochi Health Sciences Center, 2125-1 Ike, Kochi City, Kochi, 781-8555, Japan
| | - Hiroaki Taniguchi
- Department of Traumatology and Critical Care Medicine, National Defense Medical College Hospital, Namiki 3-2, Tokorozawa City, Saitama, 359-8513, Japan
| | - Masayuki Otawara
- Emergency and Critical Care Center, Tokyo Metropolitan Hiroo Hospital, 2-34-10 Ebisu, Shibuya-Ku, Tokyo, 150-0013, Japan
| | - Ayaka Matsuoka
- Department of Emergency and Critical Care Medicine, Faculty of Medicine, Saga University, Saga City, Saga, 849-8501, Japan
| | - Masanori Yamauchi
- Department of Anesthesiology and Perioperative Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-Machi, Aoba-Ku, Sendai City, Miyagi, 980-8574, Japan
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Nishikimi M, Ohshimo S, Fukumoto W, Hamaguchi J, Matsumura K, Fujizuka K, Hagiwara Y, Nakayama R, Bunya N, Maruyama J, Abe T, Anzai T, Ogata Y, Naito H, Amemiya Y, Ikeda T, Yagi M, Furukawa Y, Taniguchi H, Yagi T, Katsuta K, Konno D, Suzuki G, Kawasaki Y, Hattori N, Nakamura T, Kondo N, Kikuchi H, Kai S, Ichiyama S, Awai K, Takahashi K, Shime N. Chest CT findings in severe acute respiratory distress syndrome requiring V-V ECMO: J-CARVE registry. J Intensive Care 2024; 12:5. [PMID: 38273416 PMCID: PMC10811928 DOI: 10.1186/s40560-023-00715-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Accepted: 12/28/2023] [Indexed: 01/27/2024] Open
Abstract
BACKGROUND Chest computed tomography findings are helpful for understanding the pathophysiology of severe acute respiratory distress syndrome (ARDS). However, there is no large, multicenter, chest computed tomography registry for patients requiring veno-venous extracorporeal membrane oxygenation (V-V ECMO). The aim of this study was to describe chest computed tomography findings at V-V ECMO initiation and to evaluate the association between the findings and outcomes in severe ARDS. METHODS This multicenter, retrospective cohort study enrolled patients with severe ARDS on V-V ECMO, who were admitted to the intensive care units of 24 hospitals in Japan between January 1, 2012, and December 31, 2022. RESULTS The primary outcome was 90-day in-hospital mortality. The secondary outcomes were the successful liberation from V-V ECMO and the values of static lung compliance. Among the 697 registry patients, of the 582 patients who underwent chest computed tomography at V-V ECMO initiation, 394 survived and 188 died. Multivariate Cox regression showed that traction bronchiectasis and subcutaneous emphysema increased the risk of 90-day in-hospital mortality (hazard ratio [95% confidence interval] 1.77 [1.19-2.63], p = 0.005 and 1.97 [1.02-3.79], p = 0.044, respectively). The presence of traction bronchiectasis was also associated with decreased successful liberation from V-V ECMO (odds ratio: 0.27 [0.14-0.52], p < 0.001). Lower static lung compliance was associated with some chest computed tomography findings related to changes outside of pulmonary opacity, but not with the findings related to pulmonary opacity. CONCLUSIONS Traction bronchiectasis and subcutaneous emphysema increased the risk of 90-day in-hospital mortality in patients with severe ARDS who required V-V ECMO.
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Affiliation(s)
- Mitsuaki Nishikimi
- Department of Emergency and Critical Care Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 7348551, Japan.
| | - Shinichiro Ohshimo
- Department of Emergency and Critical Care Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 7348551, Japan
| | - Wataru Fukumoto
- Department of Diagnostic Radiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Jun Hamaguchi
- Department of Critical Care and Emergency Medicine, Tokyo Metropolitan Tama Medical Center, Tokyo, Japan
| | - Kazuki Matsumura
- Department of Critical Care and Emergency Medicine, Tokyo Metropolitan Tama Medical Center, Tokyo, Japan
| | - Kenji Fujizuka
- Advanced Medical Emergency Department and Critical Care Center, Japan Red Cross Maebashi Hospital, Maebashi, Japan
| | - Yoshihiro Hagiwara
- Department of Emergency Medicine and Critical Care Medicine, SAISEIKAI Utsunomiya Hospital, Utsunomiya, Japan
| | - Ryuichi Nakayama
- Department of Emergency Medicine, Sapporo Medical University, Sapporo, Japan
| | - Naofumi Bunya
- Department of Emergency Medicine, Sapporo Medical University, Sapporo, Japan
| | - Junichi Maruyama
- Department of Emergency Medicine and Critical Care, Fukuoka University Hospital, Fukuoka, Japan
| | - Toshikazu Abe
- Department of Emergency and Critical Care Medicine, Tsukuba Memorial Hospital, Tsukuba, Japan
| | - Tatsuhiko Anzai
- Department of Biostatistics, M&D Data Science Center, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yoshitaka Ogata
- Department of Critical Care Medicine, Yao Tokushukai General Hospital, Osaka, Japan
| | - Hiromichi Naito
- Department of Emergency, Critical Care and Disaster Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Yu Amemiya
- Department of Emergency and Critical Care Medicine, Osaka Medical and Pharmaceutical University, Osaka, Japan
| | - Tokuji Ikeda
- Department of Emergency Medicine and Critical Care Medicine, Yamanashi Prefectural Central Hospital, Kofu, Japan
| | - Masayuki Yagi
- Emergency Medical and Acute Care Surgery, Matsudo City General Hospital, Matsudo, Japan
| | - Yutaro Furukawa
- Advanced Critical Care Center, Saga University Hospital, Saga, Japan
| | - Hayato Taniguchi
- Advanced Critical Care and Emergency Center, Yokohama City University Medical Center, Yokohama, Japan
| | - Tsukasa Yagi
- Department of Emergency and Critical Care Medicine, Nihon University Hospital, Tokyo, Japan
| | - Ken Katsuta
- Department of Emergency and Critical Care, Tohoku University Hospital, Sendai, Japan
| | - Daisuke Konno
- Department of Anesthesiology and Perioperative Medicine, Tohoku University School of Medicine, Sendai, Japan
| | - Ginga Suzuki
- Emergency and Critical Care Center, Toho University Omori Medical Center, Tokyo, Japan
| | - Yuki Kawasaki
- Department of Emergency and Disaster Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Noriyuki Hattori
- Department of Emergency and Critical Care Medicine, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Tomoyuki Nakamura
- Department of Anesthesiology and Critical Care Medicine, Fujita Health University School of Medicine, Toyoake, Japan
| | - Natsuki Kondo
- Department of Intensive Care, Chiba Emergency Medical Center, Chiba, Japan
- Department of Emergency Medicine, Koga Community Hospital, Yaizu, Japan
| | - Hitoshi Kikuchi
- Department of Emergency Medicine, Sagamihara Kyodo Hospital, Sagamihara, Japan
| | - Shinichi Kai
- Department of Anesthesia, Kyoto University Hospital, Kyoto, Japan
| | - Saaya Ichiyama
- Department of Emergency and Disaster Medicine, Hirosaki University, Hirosaki, Japan
| | - Kazuo Awai
- Department of Diagnostic Radiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kunihiko Takahashi
- Department of Biostatistics, M&D Data Science Center, Tokyo Medical and Dental University, Tokyo, Japan
| | - Nobuaki Shime
- Department of Emergency and Critical Care Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 7348551, Japan
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Oguro S, Ota H, Yanagaki S, Kawabata M, Kamada H, Omata K, Tezuka Y, Ono Y, Morimoto R, Satoh F, Toyama H, Tanimoto K, Konno D, Yamauchi M, Niwa Y, Miyamoto H, Mori K, Tanaka T, Ishihata H, Takase K. Transvenous Radiofrequency Catheter Ablation for an Aldosterone-Producing Tumor of the Left Adrenal Gland: A First in Human Case Report. Cardiovasc Intervent Radiol 2023; 46:1666-1673. [PMID: 37973663 PMCID: PMC10695866 DOI: 10.1007/s00270-023-03584-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 09/29/2023] [Indexed: 11/19/2023]
Abstract
PURPOSE To describe a novel technique of transvenous radiofrequency catheter ablation of an aldosterone-producing adenoma (APA) of the left adrenal gland using the GOS System (Japan Lifeline, Tokyo, Japan). Using the GOS system, a flexible radiofrequency tip catheter can be inserted into the adrenal central and tributary veins, the drainers for functional tumors. MATERIALS AND METHODS An APA at the left adrenal gland, which was diagnosed by segmental adrenal venous sampling following administration of 0.25 mg cosyntropin, was ablated using the GOS catheter inserted into adrenal tributary veins via a right femoral vein 7-Fr sheath. The effect of radiofrequency ablation on APA was assessed using the international consensus on surgical outcomes for unilateral primary aldosteronism (PA). RESULTS No device-related complications were observed. The patient was deeply sedated under blood pressure and heart rate control with continuous administration of β-blockers. Then, the tumor and surrounding adrenal gland were cauterized at 7000 J two times each in sequence. The output time was 7-11 min for each ablation and 80 min in total. For blood pressure and pulse rate control, esmolol hydrochloride and phentolamine mesylate were used. The contrast enhancement of APA disappeared on dynamic CT immediately after the procedure. PA was biochemically cured until 12 months after the procedure. CONCLUSION Using the radiofrequency device with the GOS catheter and system is a method for cauterizing adrenal tumors from blood vessels. This approach resulted in a marked reduction in aldosterone concentrations and a complete biochemical cure of PA over the observation period.
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Affiliation(s)
- Sota Oguro
- Diagnostic Radiology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-Machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Hideki Ota
- Diagnostic Radiology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-Machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Satoru Yanagaki
- Diagnostic Radiology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-Machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Masahiro Kawabata
- Diagnostic Radiology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-Machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Hiroki Kamada
- Diagnostic Radiology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-Machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Kei Omata
- Department of Diabetes, Metabolism and Endocrinology, Tohoku University Hospital, Sendai, Miyagi, Japan
- Division of Nephrology, Rheumatology, and Endocrinology, Tohoku University, Sendai, Miyagi, Japan
| | - Yuta Tezuka
- Department of Diabetes, Metabolism and Endocrinology, Tohoku University Hospital, Sendai, Miyagi, Japan
- Division of Nephrology, Rheumatology, and Endocrinology, Tohoku University, Sendai, Miyagi, Japan
| | - Yoshikiyo Ono
- Department of Diabetes, Metabolism and Endocrinology, Tohoku University Hospital, Sendai, Miyagi, Japan
- Division of Nephrology, Rheumatology, and Endocrinology, Tohoku University, Sendai, Miyagi, Japan
| | - Ryo Morimoto
- Division of Nephrology, Rheumatology, and Endocrinology, Tohoku University, Sendai, Miyagi, Japan
| | - Fumitoshi Satoh
- Division of Nephrology, Rheumatology, and Endocrinology, Tohoku University, Sendai, Miyagi, Japan
| | - Hiroaki Toyama
- Department of Anesthesiology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Kouta Tanimoto
- Department of Anesthesiology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Daisuke Konno
- Department of Anesthesiology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Masanori Yamauchi
- Department of Anesthesiology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Yuki Niwa
- Research & Development Department, Japan Lifeline Co., Ltd., Saitama, Japan
| | - Hisao Miyamoto
- Research & Development Department, Japan Lifeline Co., Ltd., Saitama, Japan
| | - Kenji Mori
- Research & Development Department, Japan Lifeline Co., Ltd., Saitama, Japan
| | - Tetsuhiro Tanaka
- Division of Nephrology, Rheumatology, and Endocrinology, Tohoku University, Sendai, Miyagi, Japan
| | - Hiroshi Ishihata
- Department of Periodontology and Endodontology, Tohoku University Graduate School of Dentistry, Sendai, Miyagi, Japan
| | - Kei Takase
- Diagnostic Radiology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-Machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan.
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4
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Nishikimi M, Ohshimo S, Hamaguchi J, Fujizuka K, Hagiwara Y, Anzai T, Ishii J, Ogata Y, Aokage T, Ikeda T, Yagi T, Suzuki G, Ishikura K, Katsuta K, Konno D, Hattori N, Nakamura T, Matsumura Y, Kasugai D, Kikuchi H, Iino T, Kai S, Hashimoto H, Yoshida T, Igarashi Y, Ogura T, Matsumura K, Shimizu K, Nakamura M, Ichiba S, Takahashi K, Shime N. High versus low positive end-expiratory pressure setting in patients receiving veno-venous extracorporeal membrane oxygenation support for severe acute respiratory distress syndrome: study protocol for the multicentre, randomised ExPress SAVER Trial. BMJ Open 2023; 13:e072680. [PMID: 37852764 PMCID: PMC10603413 DOI: 10.1136/bmjopen-2023-072680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Accepted: 08/23/2023] [Indexed: 10/20/2023] Open
Abstract
INTRODUCTION While limiting the tidal volume to 6 mL/kg during veno-venous extracorporeal membrane oxygenation (V-V ECMO) to ameliorate lung injury in patients with acute respiratory distress syndrome (ARDS) is widely accepted, the best setting for positive end-expiratory pressure (PEEP) is still controversial. This study is being conducted to investigate whether a higher PEEP setting (15 cmH2O) during V-V ECMO can decrease the duration of ECMO support needed in patients with severe ARDS, as compared with a lower PEEP setting. METHODS AND ANALYSIS The study is an investigator-initiated, multicentre, open-label, two-arm, randomised controlled trial conducted with the participation of 20 intensive care units (ICUs) at academic as well as non-academic hospitals in Japan. The subjects of the study are patients with severe ARDS who require V-V ECMO support. Eligible patients will be randomised equally to the high PEEP group or low PEEP group. Recruitment to the study will continue until a total of 210 patients with ARDS requiring V-V ECMO support have been randomised. In the high PEEP group, PEEP will be set at 15 cmH2O from the start of V-V ECMO until the trials for liberation from V-V ECMO (or until day 28 after the allocation), while in the low PEEP group, the PEEP will be set at 5 cmH2O. Other treatments will be the same in the two groups. The primary endpoint of the study is the number of ECMO-free days until day 28, defined as the length of time (in days) from successful libration from V-V ECMO to day 28. The secondary endpoints are mortality on day 28, in-hospital mortality on day 60, ventilator-free days during the first 60 days and length of ICU stay. ETHICS AND DISSEMINATION Ethics approval for the trial at all the participating hospitals was obtained on 27 September 2022, by central ethics approval (IRB at Hiroshima University Hospital, C2022-0006). The results of this study will be presented at domestic and international medical congresses, and also published in scientific journals. TRIAL REGISTRATION NUMBER The Japan Registry of Clinical Trials jRCT1062220062. Registered on 28 September 2022. PROTOCOL VERSION 28 March 2023, version 4.0.
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Affiliation(s)
- Mitsuaki Nishikimi
- Department of Emergency and Critical Care Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Shinichiro Ohshimo
- Department of Emergency and Critical Care Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Jun Hamaguchi
- Department of Critical Care and Emergency Medicine, Tokyo Metropolitan Tama Medical Center, Tokyo, Japan
| | - Kenji Fujizuka
- Advanced Medical Emergency Department and Critical Care Center, Japan Red Cross Maebashi Hospital, Maebashi, Maebashi, UK
| | - Yoshihiro Hagiwara
- Department of Emergency Medicine and Critical Care Medicine, Saiseikai Utsunomiya Hospital, Utsunomiya, Japan
| | - Tatsuhiko Anzai
- Department of Biostatistics, M&D Data Science Center, Tokyo Medical and Dental University, Tokyo, Japan
| | - Junki Ishii
- Department of Emergency and Critical Care Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Yoshitaka Ogata
- Department of Critical Care Medicine, Yao Tokushukai General Hospital, Osaka, Japan
| | - Toshiyuki Aokage
- Department of Emergency, Critical Care and Disaster Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Tokuji Ikeda
- Department of Emergency Medicine and Critical Care Medicine, Yamanashi Prefectural Central Hospital, Kouhu, Japan
| | - Tsukasa Yagi
- Department of Cardiology, Nihon University Hospital, Tokyo, Japan
| | - Ginga Suzuki
- Emergency and Critical Care Center, Toho University Omori Medical Center, Tokyo, Japan
| | - Ken Ishikura
- Emergency and Disaster Medicine, Mie University Graduate School of Medicine, Tsu, Japan
| | - Ken Katsuta
- Department of Emergency and Critical Care, Tohoku University Hospital, Sendai, Japan
| | - Daisuke Konno
- Department of Anesthesiology and Perioperative Medicine, Tohoku University School of Medicine, Sendai, Japan
| | - Noriyuki Hattori
- Department of Emergency and Critical Care Medicine, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Tomoyuki Nakamura
- Department of Anesthesiology and Critical Care Medicine, Fujita Health University School of Medicine, Toyoake, Japan
| | - Yosuke Matsumura
- Department of Intensive Care, Chiba Emergency Medical Center, Chiba, Chiba, Japan
| | - Daisuke Kasugai
- Department of Emergency and Critical Care Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Hitoshi Kikuchi
- Department of Emergency Medicine, Sagamihara Kyodo Hospital, Sagamihara, Japan
| | - Tatsuhiko Iino
- Department of Emergency Medicine, Kishiwada Tokushukai Hospital, Osaka, Japan
| | - Shinichi Kai
- Department of Anesthesia, Kyoto University School of Medicine, Kyoto, Japan
| | - Haruka Hashimoto
- Department of Anesthesia and Intensive Care Medicine, Osaka University School of Medicine, Osaka, Japan
| | - Takeshi Yoshida
- Department of Anesthesia and Intensive Care Medicine, Osaka University School of Medicine, Osaka, Japan
| | - Yumi Igarashi
- Department of Intensive Care Medicine, Showa University School of Medicine, Tokyo, Japan
| | - Takayuki Ogura
- Department of Emergency Medicine and Critical Care Medicine, Saiseikai Utsunomiya Hospital, Utsunomiya, Japan
| | - Kazuki Matsumura
- Department of Critical Care and Emergency Medicine, Tokyo Metropolitan Tama Medical Center, Tokyo, Japan
| | - Keiki Shimizu
- Department of Critical Care and Emergency Medicine, Tokyo Metropolitan Tama Medical Center, Tokyo, Japan
| | - Mitsunobu Nakamura
- Advanced Medical Emergency Department and Critical Care Center, Japan Red Cross Maebashi Hospital, Maebashi, Maebashi, UK
| | - Shingo Ichiba
- Department of Critical Care Medicine, Tokyo Women's Medical University, Tokyo, Japan
| | - Kunihiko Takahashi
- Department of Biostatistics, M&D Data Science Center, Tokyo Medical and Dental University, Tokyo, Japan
| | - Nobuaki Shime
- Department of Emergency and Critical Care Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
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Iwasaki Y, Shiga T, Hoshi N, Irimada D, Saito H, Konno D, Saito K, Yamauchi M. Sevoflurane administration from extracorporeal membrane oxygenation via the AnaConDa device for a patient with COVID-19: a breakthrough solution for the shortage of intravenous anesthetics. Heart Lung 2022; 56:70-73. [PMID: 35780572 PMCID: PMC9212718 DOI: 10.1016/j.hrtlng.2022.06.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 01/12/2022] [Accepted: 06/14/2022] [Indexed: 11/28/2022]
Abstract
One of the major issues encountered during the coronavirus disease 2019 (COVID-19) pandemic has been the shortage of intravenous anesthetics. Moreover, patients undergoing extracorporeal membrane oxygenation (ECMO) need large quantities of intravenous anesthetics for sedation. We report the case of a 52-year-old man who was admitted to our hospital due to acute respiratory distress syndrome by COVID-19 and treated with ECMO. As controlling sedation with intravenous anesthetics was challenging, we attempted to administer inhaled anesthetics via the gas flow of ECMO. We decreased the quantity of intravenous anesthetics and opioids. This method might help overcome the shortage of intravenous anesthetics.
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Affiliation(s)
- Yudai Iwasaki
- Department of Anesthesiology and Perioperative Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan; Department of Intensive Care, Tohoku University Hospital, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan.
| | - Takuya Shiga
- Department of Intensive Care, Tohoku University Hospital, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan
| | - Naoki Hoshi
- Department of Clinical Engineering, Tohoku University Hospital, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan
| | - Daisuke Irimada
- Department of Anesthesiology and Perioperative Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan; Department of Intensive Care, Tohoku University Hospital, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan
| | - Hidehisa Saito
- Department of Anesthesiology and Perioperative Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan; Department of Intensive Care, Tohoku University Hospital, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan
| | - Daisuke Konno
- Department of Intensive Care, Tohoku University Hospital, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan
| | - Koji Saito
- Department of Intensive Care, Tohoku University Hospital, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan
| | - Masanori Yamauchi
- Department of Anesthesiology and Perioperative Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan
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Konno D, Sugino S, Shibata TF, Misawa K, Imamura-Kawasawa Y, Suzuki J, Kido K, Nagasaki M, Yamauchi M. Antiemetic effects of baclofen in a shrew model of postoperative nausea and vomiting: Whole-transcriptome analysis in the nucleus of the solitary tract. CNS Neurosci Ther 2022; 28:922-931. [PMID: 35238164 PMCID: PMC9062569 DOI: 10.1111/cns.13823] [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: 05/07/2021] [Revised: 02/14/2022] [Accepted: 02/16/2022] [Indexed: 11/28/2022] Open
Abstract
Aims The molecular genetic mechanisms underlying postoperative nausea and vomiting (PONV) in the brain have not been fully elucidated. This study aimed to determine the changes in whole transcriptome in the nucleus of the solitary tract (NTS) in an animal model of PONV, to screen a drug candidate and to elucidate the molecular genetic mechanisms of PONV development. Methods Twenty‐one female musk shrews were assigned into three groups: the Surgery group (shrew PONV model, n = 9), the Sham group (n = 6), and the Naïve group (n = 6). In behavioral studies, the main outcome was the number of emetic episodes. In genetic experiments, changes in the transcriptome in the NTS were measured. In a separate study, 12 shrews were used to verify the candidate mechanism underlying PONV. Results A median of six emetic episodes occurred in both the Sham and Surgery groups. Whole‐transcriptome analysis indicated the inhibition of the GABAB receptor‐mediated signaling pathway in the PONV model. Baclofen (GABAB receptor agonist) administration eliminated emetic behaviors in the shrew PONV model. Conclusions Our findings suggest that the GABAB receptor‐mediated signaling pathway is involved in emesis and that baclofen may be a novel therapeutic or prophylactic agent for PONV.
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Affiliation(s)
- Daisuke Konno
- Department of Anesthesiology and Perioperative Medicine, Tohoku University School of Medicine, Sendai, Japan.,Department of Integrative Genomics, Tohoku University Tohoku Medical Megabank Organization, Sendai, Japan
| | - Shigekazu Sugino
- Department of Anesthesiology and Perioperative Medicine, Tohoku University School of Medicine, Sendai, Japan
| | - Tomoko F Shibata
- Department of Integrative Genomics, Tohoku University Tohoku Medical Megabank Organization, Sendai, Japan
| | - Kazuharu Misawa
- Department of Integrative Genomics, Tohoku University Tohoku Medical Megabank Organization, Sendai, Japan.,Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Yuka Imamura-Kawasawa
- Department of Pharmacology, Biochemistry and Molecular Biology, Institute for Personalized Medicine, Pennsylvania State University College of Medicine, Hershey, USA
| | - Jun Suzuki
- Department of Anesthesiology and Perioperative Medicine, Tohoku University School of Medicine, Sendai, Japan
| | - Kanta Kido
- Department of Anesthesiology, Kanagawa Dental University Graduate School of Dentistry, Yokosuka, Japan
| | - Masao Nagasaki
- Department of Integrative Genomics, Tohoku University Tohoku Medical Megabank Organization, Sendai, Japan.,Center for the Promotion of Interdisciplinary Education and Research, Kyoto University, Kyoto, Japan
| | - Masanori Yamauchi
- Department of Anesthesiology and Perioperative Medicine, Tohoku University School of Medicine, Sendai, Japan
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7
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Sugino S, Konno D, Abe J, Imamura-Kawasawa Y, Kido K, Suzuki J, Endo Y, Yamauchi M. Crucial involvement of catecholamine neurotransmission in postoperative nausea and vomiting: Whole-transcriptome profiling in the rat nucleus of the solitary tract. Genes Brain Behav 2021; 20:e12759. [PMID: 34114352 DOI: 10.1111/gbb.12759] [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] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Revised: 05/21/2021] [Accepted: 06/09/2021] [Indexed: 11/29/2022]
Abstract
The genetic mechanisms of postoperative nausea and vomiting (PONV) and the involvement of the catecholamine system in the brain have not been elucidated. Eating kaolin clay as a type of pica has been examined as an alternative behavior to emesis. Here, we evaluated changes in whole-transcriptome analysis in the nucleus of the solitary tract (NTS) in a rat pica model as a surrogate behavior of PONV to elucidate the molecular genetic mechanisms of the development of PONV and the involvement of the catecholamine system in the NTS. First, kaolin pica behaviors were investigated in 71 female Wistar rats following isoflurane anesthesia, surgical insult or morphine administration. Multiple linear regression analysis showed that 3 mg/kg morphine increased kaolin intake by 2.8 g (P = 0.0002). Next, total RNA and protein were extracted from the dissected NTS, and whole-transcriptome sequencing (RNA-seq) was performed to identify PONV-associated genes and to verify the involvement of the catecholamine system. The gene expression levels of tyrosine hydroxylase and dopamine beta-hydroxylase in the catecholamine biosynthesis pathway decreased significantly in the PONV model. Release of noradrenaline, a catecholamine pathway end product, may have increased at the synaptic terminal of the NTS neuron after pica behavior. Systematic administration of α2 adrenergic receptor agonists after surgery reduced kaolin intake from 3.2 g (control) to 1.0 g (P = 0.0014). These results indicated that catecholamine neurotransmission was involved in the development of PONV in the NTS.
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Affiliation(s)
- Shigekazu Sugino
- Department of Anesthesiology and Perioperative Medicine, Tohoku University School of Medicine, Sendai, Japan
| | - Daisuke Konno
- Department of Anesthesiology and Perioperative Medicine, Tohoku University School of Medicine, Sendai, Japan
| | - Junko Abe
- Department of Anesthesiology and Perioperative Medicine, Tohoku University School of Medicine, Sendai, Japan
| | - Yuka Imamura-Kawasawa
- Department of Pharmacology, Department of Biochemistry and Molecular Biology, Institute for Personalized Medicine, Pennsylvania State University College of Medicine, Hershey, Pennsylvania, USA
| | - Kanta Kido
- Department of Anesthesiology, Kanagawa Dental University Graduate School of Dentistry, Yokosuka, Japan
| | - Jun Suzuki
- Department of Anesthesiology and Perioperative Medicine, Tohoku University School of Medicine, Sendai, Japan
| | - Yasuhiro Endo
- Department of Anesthesiology and Perioperative Medicine, Tohoku University School of Medicine, Sendai, Japan
| | - Masanori Yamauchi
- Department of Anesthesiology and Perioperative Medicine, Tohoku University School of Medicine, Sendai, Japan
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8
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Kido K, Katagiri N, Kawana H, Sugino S, Konno D, Suzuki J, Yamauchi M, Sanuki T. Effects of magnesium sulfate administration in attenuating chronic postsurgical pain in rats. Biochem Biophys Res Commun 2020; 534:395-400. [PMID: 33246558 DOI: 10.1016/j.bbrc.2020.11.069] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 11/16/2020] [Indexed: 01/01/2023]
Abstract
Chronic postsurgical pain (CPSP) is a serious issue for many postoperative patients. Though there are numerous treatment options for the prevention of CPSP, none of them is optimal as the mechanisms of the transition from acute to chronic postoperative pain have not been elucidated. Ketamine and opioids have been administered for chronic postoperative pain treatment but induce severe adverse reactions and/or physical dependency. Here, we examined whether pre-administration of the nonselective N-methyl-d-aspartate (NMDA) receptor antagonist magnesium sulfate attenuates CPSP behavior and alters the expression of glutamate ionotropic receptor NMDA type subunit 1a (Grin1 mRNA) in a rat skin/muscle incision and retraction (SMIR) model. We assessed the effects of a single subcutaneous magnesium sulfate injection on nociceptive behaviors including guarding pain, mechanical hyperalgesia, and heat hypersensitivity in rats after SMIR surgery. We used reverse transcription-quantitative PCR (RT-qPCR) to evaluate Grin1 mRNA expression in the dorsal horn of the spinal cord on postoperative day 14. Compared with the vehicle, magnesium sulfate administration before SMIR surgery reduced mechanical hyperalgesia for 17 d Grin1 gene expression was significantly higher on the ipsilateral side than the contralateral side (P = 0.001) on postoperative day 14. The magnesium sulfate injection prevented Grin1 mRNA upregulation in the spinal cord dorsal horn. A single magnesium sulfate injection mitigated SMIR-induced mechanical hyperalgesia possibly by modulating Grin1 expression. Preoperative magnesium sulfate administration could prove to be a simple and safe CPSP treatment.
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Affiliation(s)
- Kanta Kido
- Department of Anesthesiology, Kanagawa Dental University Hospital, Yokosuka, Kanagawa, Japan.
| | - Norika Katagiri
- Department of Anesthesiology, Kanagawa Dental University Hospital, Yokosuka, Kanagawa, Japan
| | - Hiromasa Kawana
- Department of Oral and Maxillofacial Implantology, Kanagawa Dental University Hospital, Yokosuka, Kanagawa, Japan
| | - Shigekazu Sugino
- Department of Anesthesiology and Perioperative Medicine, Tohoku University School of Medicine, Sendai, Miyagi, Japan
| | - Daisuke Konno
- Department of Anesthesiology and Perioperative Medicine, Tohoku University School of Medicine, Sendai, Miyagi, Japan
| | - Jun Suzuki
- Department of Anesthesiology and Perioperative Medicine, Tohoku University School of Medicine, Sendai, Miyagi, Japan
| | - Masanori Yamauchi
- Department of Anesthesiology and Perioperative Medicine, Tohoku University School of Medicine, Sendai, Miyagi, Japan
| | - Takuro Sanuki
- Department of Anesthesiology, Kanagawa Dental University Hospital, Yokosuka, Kanagawa, Japan
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9
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Sugino S, Konno D, Kawai Y, Nagasaki M, Endo Y, Hayase T, Yamazaki-Higuchi M, Kumeta Y, Tachibana S, Saito K, Suzuki J, Kido K, Kurosawa N, Namiki A, Yamauchi M. Long non-coding RNA MIR4300HG polymorphisms are associated with postoperative nausea and vomiting: a genome-wide association study. Hum Genomics 2020; 14:31. [PMID: 32928300 PMCID: PMC7491086 DOI: 10.1186/s40246-020-00282-4] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 09/04/2020] [Indexed: 01/02/2023] Open
Abstract
Background Genetic factors such as single-nucleotide polymorphisms (SNPs) play a key role in the development of postoperative nausea and vomiting (PONV). However, previous findings are not widely applicable to different populations because of population-specific genetic variation. We developed a Japanese-specific DNA microarray for high-throughput genotyping. The aim of the current study was to identify SNPs associated with PONV on a genome-wide scale using this microarray in a sample of Japanese surgical patients. Methods Associations between 659,636 SNPs and the incidence of PONV 24 h after surgery in a limited sample of 24 female patients were assessed using the microarray. After imputation of genotypes at 24,330,529 SNPs, 78 SNPs were found to be associated with the incidence of PONV. We chose 4 of the 78 SNPs to focus on by in silico functional annotation. Finally, we genotyped these 4 candidate SNPs in 255 patients using real-time PCR to verify association with the incidence of PONV. Results The T > C variant of rs11232965 in the long non-coding RNA MIR4300HG was significantly associated with reduced incidence of PONV among genotypes and between alleles (p = 0.01 and 0.007). Conclusions We identified a novel SNP (rs11232965) in the long non-coding RNA MIR4300HG that is associated with PONV. The rs11232965-SNP variant (T > C) is protective against the incidence of PONV. Trial registration This study was registered at the UMIN Clinical Trials Registry (Identifier: UMIN000022903, date of registration: June 27, 2016, retrospectively registered.
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Affiliation(s)
- Shigekazu Sugino
- Department of Anesthesiology and Perioperative Medicine, Tohoku University School of Medicine, Seiryo-machi 2-1, Sendai, Miyagi, 980-8575, Japan. .,Department of Anesthesia, Otaru General Hospital, Wakamatsu 1, Otaru, Hokakido, 047-8550, Japan.
| | - Daisuke Konno
- Department of Anesthesiology and Perioperative Medicine, Tohoku University School of Medicine, Seiryo-machi 2-1, Sendai, Miyagi, 980-8575, Japan
| | - Yosuke Kawai
- Department of Integrative Genomics, Tohoku University Tohoku Medical Megabank Organization, Seiryo-machi 2-1, Sendai, Miyagi, 980-8575, Japan
| | - Masao Nagasaki
- Department of Integrative Genomics, Tohoku University Tohoku Medical Megabank Organization, Seiryo-machi 2-1, Sendai, Miyagi, 980-8575, Japan
| | - Yasuhiro Endo
- Department of Anesthesiology and Perioperative Medicine, Tohoku University School of Medicine, Seiryo-machi 2-1, Sendai, Miyagi, 980-8575, Japan
| | - Tomo Hayase
- Department of Anesthesia, Otaru General Hospital, Wakamatsu 1, Otaru, Hokakido, 047-8550, Japan
| | - Misako Yamazaki-Higuchi
- Department of Anesthesia, Otaru General Hospital, Wakamatsu 1, Otaru, Hokakido, 047-8550, Japan
| | - Yukihiro Kumeta
- Department of Anesthesia, Otaru General Hospital, Wakamatsu 1, Otaru, Hokakido, 047-8550, Japan
| | - Shunsuke Tachibana
- Department of Anesthesia, Otaru General Hospital, Wakamatsu 1, Otaru, Hokakido, 047-8550, Japan
| | - Katsuhiko Saito
- Department of Pharmacy, Hokkaido Pharmaceutical University School of Pharmacy, Maeda 7-15, Sapporo, Hokakido, 006-8590, Japan
| | - Jun Suzuki
- Department of Anesthesiology and Perioperative Medicine, Tohoku University School of Medicine, Seiryo-machi 2-1, Sendai, Miyagi, 980-8575, Japan
| | - Kanta Kido
- Department of Anesthesiology, Kanagawa Dental University Graduate School of Dentistry, Inaoka 82, Yokosuka, Kanagawa, 238-8580, Japan
| | - Nahoko Kurosawa
- Department of Pharmacy, Hokkaido Pharmaceutical University School of Pharmacy, Maeda 7-15, Sapporo, Hokakido, 006-8590, Japan
| | - Akiyoshi Namiki
- Hospital Administrator, Otaru General Hospital, Wakamatsu 1, Otaru, Hokakido, 047-8550, Japan
| | - Masanori Yamauchi
- Department of Anesthesiology and Perioperative Medicine, Tohoku University School of Medicine, Seiryo-machi 2-1, Sendai, Miyagi, 980-8575, Japan
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10
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Iwasaki Y, Shiga T, Konno D, Saito K, Aoyagi T, Oshima K, Kanamori H, Baba H, Tokuda K, Yamauchi M. Screening of COVID-19-associated hypercoagulopathy using rotational thromboelastometry. J Clin Anesth 2020; 67:109976. [PMID: 32682251 PMCID: PMC7334959 DOI: 10.1016/j.jclinane.2020.109976] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 05/26/2020] [Accepted: 07/03/2020] [Indexed: 01/22/2023]
Affiliation(s)
- Yudai Iwasaki
- Department of Anesthesiology and Perioperative Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan; Department of Intensive Care Unit, Tohoku University Hospital, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan.
| | - Takuya Shiga
- Department of Intensive Care Unit, Tohoku University Hospital, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan
| | - Daisuke Konno
- Department of Anesthesiology and Perioperative Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan; Department of Intensive Care Unit, Tohoku University Hospital, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan
| | - Koji Saito
- Department of Intensive Care Unit, Tohoku University Hospital, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan
| | - Tetsuji Aoyagi
- Department of Infectious Diseases, Internal Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan
| | - Kengo Oshima
- Department of Infectious Diseases, Internal Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan
| | - Hajime Kanamori
- Department of Infectious Diseases, Internal Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan
| | - Hiroaki Baba
- Department of Infectious Diseases, Internal Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan
| | - Koichi Tokuda
- Department of Infectious Diseases, Internal Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan
| | - Masanori Yamauchi
- Department of Anesthesiology and Perioperative Medicine, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan
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11
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Ichihashi K, Nishimura T, Konno D, Inoue K, Nakaya T, Akutagawa T, Nakamura T, Nishihara S. Magnetic Switching by Desorption/Adsorption of an Organic Solvent Molecule from/on [Ni(dmit) 2] − Salt. CHEM LETT 2019. [DOI: 10.1246/cl.181031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Katsuya Ichihashi
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Takumi Nishimura
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Daisuke Konno
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Katsuya Inoue
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
- Chirality Research Center (CResCent) and Institute for Advanced Materials Research, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Toshimi Nakaya
- Department of Applied Chemistry, Graduate School of Engineering and Technical Center, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - Tomoyuki Akutagawa
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Takayoshi Nakamura
- Research Institute for Electronic Science, Hokkaido University, N20W10, Kita-ku, Sapporo, Hokkaido 001-0020, Japan
| | - Sadafumi Nishihara
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
- Chirality Research Center (CResCent) and Institute for Advanced Materials Research, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
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12
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Ichihashi K, Konno D, Maryunina KY, Inoue K, Toyoda K, Kawaguchi S, Kubota Y, Tatewaki Y, Akutagawa T, Nakamura T, Nishihara S. Selective Ion Exchange in Supramolecular Channels in the Crystalline State. Angew Chem Int Ed Engl 2019; 58:4169-4172. [PMID: 30673160 DOI: 10.1002/anie.201813709] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Indexed: 12/28/2022]
Abstract
Artificial ion channels are of increasing interest because of potential applications in biomimetics, for example, for realizing selective ion permeability through the transport and/or exchange of selected ions. However, selective ion transport and/or exchange in the crystalline state is rare, and to the best of our knowledge, such a process has not been successfully combined with changes in the physical properties of a material. Herein, by soaking single crystals of Li2 ([18]crown-6)3 [Ni(dmit)2 ]2 (H2 O)4 (1) in an aqueous solution containing K+ , we succeeded in complete ion exchange of the Li+ ions in 1 with K+ ions in the solution, while maintaining the crystalline state of the material. This ion exchange with K+ was selectively conducted even in mixed solutions containing K+ as well as Na+ /Li+ . Furthermore, remarkable changes in the physical properties of 1 resulted from the ion exchange. Our finding enables not only the realization of selective ion permeability but also the development of highly sensitive biosensors and futuristic ion exchange agents, for example.
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Affiliation(s)
- Katsuya Ichihashi
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8526, Japan
| | - Daisuke Konno
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8526, Japan
| | - Kseniya Yu Maryunina
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8526, Japan.,Chirality Research Center (CResCent), Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8526, Japan
| | - Katsuya Inoue
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8526, Japan.,Chirality Research Center (CResCent), Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8526, Japan.,Institute for Advanced Materials Research, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8526, Japan
| | - Kazuhiro Toyoda
- Faculty of Environmental Earth Science, Hokkaido University, N10W5, Kita-ku, Sapporo, 060-0810, Japan
| | - Shogo Kawaguchi
- Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, 1-1-1 Kouto, Sayo, 679-5198, Japan
| | - Yoshiki Kubota
- Department of Physical Science, Graduate School of Science, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, 599-8531, Japan
| | - Yoko Tatewaki
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, 184-8588, Japan
| | - Tomoyuki Akutagawa
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan
| | - Takayoshi Nakamura
- Research Institute for Electronic Science, Hokkaido University, N20W10, Kita-ku, Sapporo, 001-0020, Japan
| | - Sadafumi Nishihara
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8526, Japan.,Chirality Research Center (CResCent), Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8526, Japan.,Institute for Advanced Materials Research, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8526, Japan
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13
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Ichihashi K, Konno D, Maryunina KY, Inoue K, Toyoda K, Kawaguchi S, Kubota Y, Tatewaki Y, Akutagawa T, Nakamura T, Nishihara S. Cover Picture: Selective Ion Exchange in Supramolecular Channels in the Crystalline State (Angew. Chem. Int. Ed. 13/2019). Angew Chem Int Ed Engl 2019. [DOI: 10.1002/anie.201901957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Katsuya Ichihashi
- Department of ChemistryGraduate School of ScienceHiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
| | - Daisuke Konno
- Department of ChemistryGraduate School of ScienceHiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
| | - Kseniya Yu. Maryunina
- Department of ChemistryGraduate School of ScienceHiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
- Chirality Research Center (CResCent)Hiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
| | - Katsuya Inoue
- Department of ChemistryGraduate School of ScienceHiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
- Chirality Research Center (CResCent)Hiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
- Institute for Advanced Materials ResearchHiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
| | - Kazuhiro Toyoda
- Faculty of Environmental Earth ScienceHokkaido University N10W5, Kita-ku Sapporo 060-0810 Japan
| | - Shogo Kawaguchi
- Japan Synchrotron Radiation Research Institute (JASRI)SPring-8 1-1-1 Kouto Sayo 679-5198 Japan
| | - Yoshiki Kubota
- Department of Physical ScienceGraduate School of ScienceOsaka Prefecture University 1-1 Gakuen-cho, Naka-ku Sakai 599-8531 Japan
| | - Yoko Tatewaki
- Department of Applied ChemistryGraduate School of EngineeringTokyo University of Agriculture and Technology 2-24-16 Nakacho Koganei 184-8588 Japan
| | - Tomoyuki Akutagawa
- Institute of Multidisciplinary Research for Advanced MaterialsTohoku University 2-1-1 Katahira Aoba-ku Sendai 980-8577 Japan
| | - Takayoshi Nakamura
- Research Institute for Electronic ScienceHokkaido University N20W10, Kita-ku Sapporo 001-0020 Japan
| | - Sadafumi Nishihara
- Department of ChemistryGraduate School of ScienceHiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
- Chirality Research Center (CResCent)Hiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
- Institute for Advanced Materials ResearchHiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
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14
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Ichihashi K, Konno D, Maryunina KY, Inoue K, Toyoda K, Kawaguchi S, Kubota Y, Tatewaki Y, Akutagawa T, Nakamura T, Nishihara S. Selective Ion Exchange in Supramolecular Channels in the Crystalline State. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201813709] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Katsuya Ichihashi
- Department of Chemistry Graduate School of Science Hiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
| | - Daisuke Konno
- Department of Chemistry Graduate School of Science Hiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
| | - Kseniya Yu. Maryunina
- Department of Chemistry Graduate School of Science Hiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
- Chirality Research Center (CResCent) Hiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
| | - Katsuya Inoue
- Department of Chemistry Graduate School of Science Hiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
- Chirality Research Center (CResCent) Hiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
- Institute for Advanced Materials Research Hiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
| | - Kazuhiro Toyoda
- Faculty of Environmental Earth Science Hokkaido University N10W5, Kita-ku Sapporo 060-0810 Japan
| | - Shogo Kawaguchi
- Japan Synchrotron Radiation Research Institute (JASRI) SPring-8 1-1-1 Kouto Sayo 679-5198 Japan
| | - Yoshiki Kubota
- Department of Physical Science Graduate School of Science Osaka Prefecture University 1-1 Gakuen-cho, Naka-ku Sakai 599-8531 Japan
| | - Yoko Tatewaki
- Department of Applied Chemistry Graduate School of Engineering Tokyo University of Agriculture and Technology 2-24-16 Nakacho Koganei 184-8588 Japan
| | - Tomoyuki Akutagawa
- Institute of Multidisciplinary Research for Advanced Materials Tohoku University 2-1-1 Katahira Aoba-ku Sendai 980-8577 Japan
| | - Takayoshi Nakamura
- Research Institute for Electronic Science Hokkaido University N20W10, Kita-ku Sapporo 001-0020 Japan
| | - Sadafumi Nishihara
- Department of Chemistry Graduate School of Science Hiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
- Chirality Research Center (CResCent) Hiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
- Institute for Advanced Materials Research Hiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
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Ichihashi K, Konno D, Maryunina KY, Inoue K, Toyoda K, Kawaguchi S, Kubota Y, Tatewaki Y, Akutagawa T, Nakamura T, Nishihara S. Titelbild: Selective Ion Exchange in Supramolecular Channels in the Crystalline State (Angew. Chem. 13/2019). Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201901957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Katsuya Ichihashi
- Department of ChemistryGraduate School of ScienceHiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
| | - Daisuke Konno
- Department of ChemistryGraduate School of ScienceHiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
| | - Kseniya Yu. Maryunina
- Department of ChemistryGraduate School of ScienceHiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
- Chirality Research Center (CResCent)Hiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
| | - Katsuya Inoue
- Department of ChemistryGraduate School of ScienceHiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
- Chirality Research Center (CResCent)Hiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
- Institute for Advanced Materials ResearchHiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
| | - Kazuhiro Toyoda
- Faculty of Environmental Earth ScienceHokkaido University N10W5, Kita-ku Sapporo 060-0810 Japan
| | - Shogo Kawaguchi
- Japan Synchrotron Radiation Research Institute (JASRI)SPring-8 1-1-1 Kouto Sayo 679-5198 Japan
| | - Yoshiki Kubota
- Department of Physical ScienceGraduate School of ScienceOsaka Prefecture University 1-1 Gakuen-cho, Naka-ku Sakai 599-8531 Japan
| | - Yoko Tatewaki
- Department of Applied ChemistryGraduate School of EngineeringTokyo University of Agriculture and Technology 2-24-16 Nakacho Koganei 184-8588 Japan
| | - Tomoyuki Akutagawa
- Institute of Multidisciplinary Research for Advanced MaterialsTohoku University 2-1-1 Katahira Aoba-ku Sendai 980-8577 Japan
| | - Takayoshi Nakamura
- Research Institute for Electronic ScienceHokkaido University N20W10, Kita-ku Sapporo 001-0020 Japan
| | - Sadafumi Nishihara
- Department of ChemistryGraduate School of ScienceHiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
- Chirality Research Center (CResCent)Hiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
- Institute for Advanced Materials ResearchHiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
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Konno D, Nishino R, Ejima Y, Ohnishi E, Sato K, Kurosawa S. [Assessment of the perioperative factors contributing to the hemodynamic changes during surgery in ten patients with pheochromocytoma]. Masui 2013; 62:421-425. [PMID: 23697193] [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] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
BACKGROUND Intensive perioperative management is required for adrenalectomy in patients with pheocromocytoma because of the unstable hemodynamics and life threatening cardiovascular disturbances due to catecholamine surge from the neuroendocrine tumors. The aim of this study was to assess the perioperative factors contributing to the hemodynamic changes during surgery in pheochromocytoma. METHODS Ten patients with pheochromocytoma undergoing elective adrenalectomy were enrolled in this retrospective study. The circulating blood volume before surgery and the perioperative factors associated with hemodynamic changes during surgery were assessd by the pulse dye densitometry and VigileoTM/ FroTracTM system, respectively. RESULTS The decreases of blood pressure after resections of the central veins from tumors were significantly greater in laparotomy than those in laparoscopic surgery (P<0.05). In addition, the decreases of blood pressure after resection of the central were correlated with tumor sizes (R= -0.611), perioperative noradrenaline (NA) blood levels (R= -0.860), perioperative amounts of NA in urine (R= -0.743), and mean stroke volume variations for 5 min after resection of the veins(R= - 0.679). CONCLUSIONS The decreases of blood pressure after resections of the central veins are dependent on the perioperative blood NA levels, the level of NA in the perioperative urine testig, and tumor sizes.
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Affiliation(s)
- Daisuke Konno
- Department of Anesthesiology, Tohoku University Hospital, Sendai 980-8574
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Matsuoka T, Konno D. Anteroventral cochlear nucleus models for considering on the missing fundamental. Conf Proc IEEE Eng Med Biol Soc 2007; 2005:2126-9. [PMID: 17282649 DOI: 10.1109/iembs.2005.1616880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Several phenomena, which were made clear by psycho-acoustic experiments, have not electric physiologic evidence data. The missing fundamental phenomenon is one of the phenomena. We try making clear the mechanism how the missing fundamental is produced. By psycho-acoustic experiments and Cochlear models experiments, we investigated its fundamental characteristics in the low frequency range where the influence of spontaneous discharge of primary auditory nerves and the influence of refractory period of primary auditory nerves can be ignored. In order to investigate the mechanism of the missing fundamental in the frequency range where these influence can not be ignored, we have made Anteroventral Cochlear Nucleus models (AVCN models). In this report, Cochlear models - AVCN models is mentioned. And it is also mentioned that the frequency information of the missing fundamental of input signals lower than 900Hz explicitly appeared in the interspike-interval histogram of the aggregated autocorrelogram of output pulse trains from Cochlear models - AVCN models. To confirm it by the perceptual experiments, psycho-acoustic experiments will be carried out in the future.
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Affiliation(s)
- Takahide Matsuoka
- Information and Control Systems Science, Graduate School of Engineering, Utsunomiya Univ., Utsunomiya City, 321-8585 Japan. E-mail:
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Ando K, Nagano T, Nakamura A, Konno D, Yagi H, Sato M. Expression and characterization of disulfide bond use of oligomerized A2-Pancortins: Extracellular matrix constituents in the developing brain. Neuroscience 2005; 133:947-57. [PMID: 15927402 DOI: 10.1016/j.neuroscience.2005.03.009] [Citation(s) in RCA: 18] [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] [Received: 01/24/2005] [Revised: 03/04/2005] [Accepted: 03/09/2005] [Indexed: 11/19/2022]
Abstract
The region-specific characteristics of the extracellular matrix are crucial for diverse functions in the brain. Pancortins/neuron-specific olfactomedin-related glycoproteins are components of the extracellular matrix. They comprise four alternatively spliced variants, Pancortin-1 to -4, which share a common portion, the B part, in the middle of their structure, have two pairs of alternatively spliced 5' regions, A1 and A2, and 3' regions, C1 and C2. Here we demonstrate that in mice, Pancortin-3 (A2-B-C1) and Pancortin-4 (A2-B-C2), which we have grouped together the A2-Pancortins, were transcribed early during the development of the brain in a region specific manner and were expressed very stably in vivo. They are N-glycosylated and secreted. Furthermore, we examined their ontogenetical expression profiles in the developing thalamus using antiserum against the common B region, since transient expressions of their mRNAs were notable there. In the developing thalami, they lasted long in oligomerized form even after the transcription of their mRNAs decreased to an undetectable level. Further analyses revealed that cysteine residues that are located in the common B part are important for homo- and hetero-oligomer formation of A2-Pancortins. When we substituted cysteine residues 45 and 47 with serine residues in that common B part, oligomerization of the A2-Pancortins was highly disturbed.
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Affiliation(s)
- K Ando
- Division of Cell Biology and Neuroscience, Department of Morphological and Physiological Sciences, Faculty of Medical Sciences, University of Fukui, 23 Shimoaizuki, Matsuoka, Fukui, 910-1193 Japan
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Okabe S, Urushido T, Konno D, Okado H, Sobue K. Rapid redistribution of the postsynaptic density protein PSD-Zip45 (Homer 1c) and its differential regulation by NMDA receptors and calcium channels. J Neurosci 2001; 21:9561-71. [PMID: 11739567 PMCID: PMC6763022] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023] Open
Abstract
PSD-Zip45 (Homer 1c) and PSD-95 are postsynaptic density (PSD) proteins containing distinct protein-interacting motifs. Green fluorescent protein (GFP)-tagged PSD-Zip45 and PSD-95 molecules were targeted to the PSD in hippocampal neurons. We analyzed dynamic behavior of these GFP-tagged PSD proteins by using time-lapse confocal microscopy. In contrast to the less dynamic properties of PSD-95, PSD-Zip45 showed rapid redistribution and a higher steady-state turnover rate. Differential stimulation protocols were found to alter the direction of PSD-Zip45 assembly-disassembly. Transient increases in intracellular Ca(2+) by voltage-dependent Ca(2+) channel activation induced PSD-Zip45 clustering. In contrast, NMDA receptor-dependent Ca(2+) influx resulted in the disassembly of PSD-Zip45 clusters. Thus, neuronal activity differentially redistributes a specific subset of PSD proteins, which are important for localization of both surface receptors and intracellular signaling complexes.
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Affiliation(s)
- S Okabe
- Department of Anatomy and Cell Biology, School of Medicine, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, 113-8519, Japan.
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Abstract
We have identified a novel mouse gene named pancortin that is expressed dominantly in the mature cerebral cortex. This gene produces four different species of proteins, Pancortin-1-4, sharing a common region in the middle of their structure with two variations at the N-terminal (A1 or A2 part) and C-terminal (C1 or C2 part) sides, respectively. In the present study, we showed that expression of mRNAs for A2-Pancortins (Pancortin species that contain the A2 part, i.e., Pancortin-3 and -4) is more dominant than that of mRNAs for A1-Pancortins (Pancortin species that contain the A1 part, i.e., Pancortin-1 and -2) in the prenatal mouse cerebral neocortex. Using western blot analysis, we found that substantial amounts of both A2-Pancortins were present in the prenatal cerebral neocortex and P19 cells after inducing neuronal differentiation. A2-Pancortins were still present in the cerebral neocortex of the adult, although their mRNAs were hardly detected. In contrast, the amount of A1-Pancortins did not increase after the third postnatal week in spite of their intense gene expression. Furthermore, we showed that recombinant Pancortin-3, one of the A2-Pancortins, was a secreted protein, in contrast to Pancortin-1 (one of the A1-Pancortins). These results suggest that A2-Pancortins are extracellular proteins essential for neuronal differentiation and that their molecular behavior is distinct from that of A1-Pancortins.
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Affiliation(s)
- T Nagano
- Department of Anatomy, Faculty of Medicine, Fukui Medical University, Matsuoka, Fukui, Japan
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Abstract
We investigated the effect of nitric oxide (NO) on iron-induced neuronal damage. Incubation of PC12 cells after the addition of FeCl2 induced rapid increases (within 1 hr) in lipid peroxidation and a concentration (0.1-2 mM)-dependent decrease in cell viability at 48 hr, both of which were blocked by deferoxamine and 2-methyl-6-(p-methoxyphenyl)-3,7-dihydroimidazo[1,2-a]pyrazine-3-o ne hydrochloride (MCLA) (a superoxide scavenger) but not by mannitol (a hydroxyl radical scavenger). Iron-induced cytotoxicity was also antagonized by superoxide dismutase with catalase. On the other hand, the NO donors S-nitroso-N-acetylpenicillamine (SNAP), 3-¿(+/-)-(E)-ethyl-2'-[(E)-hydroxylamino]-5-nitro-3-hexenecarbo moyl¿-pyridine (NOR-4), and 2,2'-(hydroxynitrosohydrazono)bis-ethanamine (NOC-18) decreased cell viability 48 hr after addition without increasing lipid peroxidation. However, when added with 1 mM FeCl2, NO donors including NOC-18, SNAP and NOR-4 (0.1-1 mM) inhibited lipid peroxidation in a concentration-dependent manner and suppressed cell death at lower concentrations. Addition of MCLA and NOC-18 also suppressed decreases in iron-induced [3H]thymidine incorporation. In rat brain homogenate, NOC-18 and SNAP both suppressed iron-induced lipid peroxidation. These findings suggest that NO has a dual effect on neuronal viability and can act as an antioxidant which protects neurons from iron-induced damage.
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Affiliation(s)
- K Nara
- Department of Pharmacology, School of Medicine, Showa University, Tokyo, Japan
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Konno D, Okita N. Particle Sedimentation in Model Tank and Crude Oil Storage Tank with Side-entering Mixer. KAGAKU KOGAKU RONBUN 1984. [DOI: 10.1252/kakoronbunshu.10.330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Konno D, Okita N. Particle Sedimentation in Model Tank and Crude Oil Storage Tank with Side-entering Mixer. KAGAKU KOGAKU RONBUN 1983. [DOI: 10.1252/kakoronbunshu.9.309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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