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Imai M, Hiramoto K, Tanaka S, Ooi K. Interactions between Age-Related Type 2 Diabetes and the Small Intestine. Biol Pharm Bull 2024; 47:791-795. [PMID: 38583950 DOI: 10.1248/bpb.b24-00065] [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] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
The number of patients with type 2 diabetes is increasing worldwide. The mechanisms leading to type 2 diabetes and its complications is being researched; however, the pathological mechanisms of diabetes in the small intestine remain unclear. Therefore, we examined these pathological mechanisms in the small intestine using a mouse model of type 2 diabetes (KK-Ay/TaJcl) aged 10 and 50 weeks. The results showed that diabetes worsened with age in the mice with type 2 diabetes. In these mice, advanced glycation end products (AGEs) in the small intestine and mast cell expression increased, whereas diamine oxidase (DAO) decreased; increased tumor necrosis factor (TNF)-α and histamine levels in the plasma and small intestine were also detected. Additionally, the expression of zonula occludens (ZO)-1 and Claudin1 and cell adhesion molecules in the small intestine reduced. These results exacerbated with age. These findings indicate that type 2 diabetes causes AGE/mast cell/histamine and TNF-α signal transmission in the small intestine and decreases small intestinal wall cell adhesion molecules cause TNF-α and histamine to flow into the body, worsening the diabetic condition. In addition, this sequence of events is suggested to be strengthened in aged mice with type 2 diabetes, thus exacerbating the disease. These findings of this study may facilitate the elucidation of the pathological mechanisms of type 2 diabetes and its associated complications.
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Affiliation(s)
- Masashi Imai
- Department of Pharmaceutical Sciences, Suzuka University of Medical Science
| | - Keiichi Hiramoto
- Department of Pharmaceutical Sciences, Suzuka University of Medical Science
| | - Shota Tanaka
- Department of Pharmaceutical Sciences, Suzuka University of Medical Science
| | - Kazuya Ooi
- Department of Pharmaceutical Sciences, Suzuka University of Medical Science
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2
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Tsujiguchi T, Imai M, Kimura S, Koiwa T, Naraoka M, Hanada H, Yamanouchi K, Kashiwakura I, Ito K. Development of an Automatic Chronological Record Creation System Using Voice AI to Facilitate Information Aggregation and Sharing in the Event of a Disaster. Disaster Med Public Health Prep 2023; 17:e560. [PMID: 38083851 DOI: 10.1017/dmp.2023.216] [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] [Subscribe] [Scholar Register] [Indexed: 12/18/2023]
Abstract
OBJECTIVE In the event of a disaster, the chain of command and communication of each relevant agency is important. In this study, a chronological record creation system using voice AI (V-CRS) was developed, and an experiment was conducted to determine whether the obtained information could be quickly and easily summarized in chronological order. METHODS After a lecture by Japanese Disaster Medical Assistant (DMAT) Team members and 8 medical clerks on how to use the developed tool, a comparison experiment was conducted between manual input and V-CRS utilization of the time to compile disaster information. RESULTS Results proved that V-CRS can collect information gathered at headquarters more quickly than handwriting. It was also suggested that even medical clerks who have never been trained to record information during disasters could record information at the same speed as trained DMAT personnel. CONCLUSION V-CRS can transcribe audio information even in situations where technical terms and physical units must be recorded, such as radiation disasters. It has been proven that anyone can quickly organize information using this method, to some extent.
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Affiliation(s)
- Takakiyo Tsujiguchi
- Hirosaki University, Radiation Emergency Medicine and Cooperation Promotion, Education Center for Disaster and Radiation Emergency Medicine, Hirosaki, Aomori, Japan
| | - Masashi Imai
- Graduate School of Science and Technology, Hirosaki University, Hirosaki, Aomori, Japan
| | - Shota Kimura
- Graduate School of Health Sciences, Hirosaki University, Hirosaki, Aomori, Japan
| | - Tomoki Koiwa
- Graduate School of Health Sciences, Hirosaki University, Hirosaki, Aomori, Japan
| | - Masato Naraoka
- Hirosaki University, Radiation Emergency Medicine and Cooperation Promotion, Education Center for Disaster and Radiation Emergency Medicine, Hirosaki, Aomori, Japan
- Advance Emergency and Critical Care Center, Hirosaki University Hospital, Hirosaki, Aomori, Japan
| | - Hiroyuki Hanada
- Advance Emergency and Critical Care Center, Hirosaki University Hospital, Hirosaki, Aomori, Japan
| | - Kanako Yamanouchi
- Graduate School of Health Sciences, Hirosaki University, Hirosaki, Aomori, Japan
| | - Ikuo Kashiwakura
- Hirosaki University, Radiation Emergency Medicine and Cooperation Promotion, Education Center for Disaster and Radiation Emergency Medicine, Hirosaki, Aomori, Japan
| | - Katsuhiro Ito
- Hirosaki University, Radiation Emergency Medicine and Cooperation Promotion, Education Center for Disaster and Radiation Emergency Medicine, Hirosaki, Aomori, Japan
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Takano S, Tomita N, Niwa M, Torii A, Takaoka T, Okazaki D, Kita N, Uchiyama K, Imai M, Ayakawa S, Iida M, Tsuzuki Y, Otsuka S, Manabe Y, Nomura K, Ogawa Y, Miyakawa A, Miyamoto A, Yasui T, Hiwatashi A. Effects of Radiation Doses on Clinical Recurrence in Patients with Biochemically Recurrent Prostate Cancer after Prostatectomy. Int J Radiat Oncol Biol Phys 2023; 117:e444. [PMID: 37785436 DOI: 10.1016/j.ijrobp.2023.06.1623] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Salvage radiotherapy (SRT) to the prostate bed is the only curative treatment for patients with biochemical recurrence (BCR) after radical prostatectomy (RP). Although several systematic reviews indicated that a dose escalation in the range of 60-70 Gy improved biochemical control, the effects of radiation doses on clinical relapse after SRT remain unclear. Our aim was to investigate the relationship between radiation doses and clinical relapse-free survival (cRFS) after SRT. MATERIALS/METHODS We identified 295 eligible patients receiving SRT for biochemically recurrent prostate cancer after RP between 2005 and 2018 at 15 institutions. Sixteen patients (5%) received short-term (< 6 months) androgen deprivation therapy (ADT) following RP and/or concurrently with SRT. SRT was delivered to the prostate and seminal vesicle bed using photon beams at a median (range) dose of 66 Gy (61-85) in 1.8-3.0 Gy fractions. The primary outcome was cRFS. Clinical relapse was identified on radiological imaging and/or biopsy and included local recurrence, lymph node metastasis, and distant metastasis. In all analyses, doses were recalculated as an equivalent dose in 2-Gy fractions (EQD2) with α/β = 1.5 Gy. Clinical RFS between the EQD2 ≥ 66 Gy (n = 229) and EQD2 < 66 Gy (n = 66) groups were compared using the Log-rank test, followed by univariate and multivariate Cox regression analyses and a subgroup analysis. RESULTS The median follow-up duration was 73 months. Among patients with BCR (n = 119), 79 of 96 (82%) in the EQD2 ≥ 66 Gy group and 21 of 23 (91%) in the EQD2 < 66 Gy group received second salvage ADT (p = 0.36). Among all patients (n = 295), clinical relapse was identified in 22 (7%) patients after SRT. Six-year biochemical relapse-free survival (bRFS), cRFS, cancer-specific survival (CSS), and overall survival (OS) rates were 58%, 93%, 98%, and 94%, respectively. Six-year cRFS rates were 94% (95% confidence interval [CI], 90-97) in the EQD2 ≥ 66 Gy group and 87% (95% CI, 75-93) in the EQD2 < 66 Gy group (p = 0.020). The multivariate analysis revealed that EQD2 < 66 Gy, Gleason score ≥ 8, seminal vesicle involvement, and PSA at BCR ≥ 0.5 ng/ml correlated with clinical relapse (p = 0.0016, 0.014, 0.011, and 0.027, respectively). The subgroup analysis showed the consistent benefit of EQD2 ≥ 66 Gy in patients across most subgroups including PSA at BCR after RP, extracapsular extension, and age at SRT. CONCLUSION This large multi-institutional observational study demonstrated that a higher SRT dose (EQD2 ≥ 66 Gy) resulted in superior cRFS. The present result supports the dose recommendations in the 2023 National Comprehensive Cancer Network guidelines (64-72 Gy) even in terms of clinical relapse. Prospective trial is warranted to investigate an upper threshold for optimal SRT dose.
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Affiliation(s)
- S Takano
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - N Tomita
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - M Niwa
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - A Torii
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - T Takaoka
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - D Okazaki
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - N Kita
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - K Uchiyama
- Department of Radiology, Kariya-Toyota general hospital, Nagoya, Japan
| | - M Imai
- Department of Radiology, Japanese Red Cross Aichi Medical Center Nagoya Daini Hospital, Nagoya, Japan
| | - S Ayakawa
- Department of Radiology, Japan Community Healthcare Organization Chukyo Hospital, Nagoya, Japan
| | - M Iida
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan; Department of Radiation Oncology, Suzuka General Hospital, Suzuka, Japan
| | - Y Tsuzuki
- Department of Radiation Oncology, Nagoya Proton Therapy Center, Nagoya City University West Medical Center, Nagoya, Japan
| | - S Otsuka
- Department of Radiology, Okazaki City Hospital, Okazaki, Japan
| | - Y Manabe
- Department of Radiation Oncology, Nanbu Tokushukai Hospital, Okinawa, Japan
| | - K Nomura
- Department of Radiotherapy, Nagoya City West Medical Center, Nagoya, Japan
| | - Y Ogawa
- Department of Radiation Oncology, Kasugai Municipal Hospital, Kasugai, Japan
| | - A Miyakawa
- Department of Radiation Oncology, National Hospital Organization Nagoya Medical Center, Nagoya, Japan
| | - A Miyamoto
- Department of Radiation Oncology, Hokuto Hospital, Obihiro, Japan
| | - T Yasui
- Department of Urology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - A Hiwatashi
- Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
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Hiramoto K, Imai M, Tanaka S, Ooi K. Dementia Is Induced via the AGEs/Iba1/iNOS Pathway in Aged KK-Ay/Tajcl Mice. Life (Basel) 2023; 13:1540. [PMID: 37511915 PMCID: PMC10381697 DOI: 10.3390/life13071540] [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: 06/14/2023] [Revised: 07/07/2023] [Accepted: 07/10/2023] [Indexed: 07/30/2023] Open
Abstract
The onset and exacerbation of dementia have been observed in elderly patients with type 2 diabetes. However, the underlying mechanism remains unclear. In this study, we investigated the effects of aging on the cognitive function in a mouse model of type 2 diabetes. Pathogen-free KK-Ay/TaJcl mice were used in this study. The cognitive abilities and memory declined in the mice and worsened in the 50-week-olds. The levels of advanced glycation end products (AGEs), receptor for AGE (RAGE), and Iba1 in the hippocampus were increased in the mice compared to those in the control mice. Hippocampal levels of CC-chemokine receptor 7 and inducible nitric oxide synthase, which are from M1-type macrophages that shift from microglia, were higher in KK-Ay/TaJcl mice than in control mice. Tumor necrosis factor (TNF)-α and nitric oxide (NO) levels secreted by M1-type macrophages were similarly elevated in the mice and were even higher at the age of 50 weeks. NO levels were markedly elevated in the 50-week-old mice. In contrast, differentiation of CD163 and arginase-1 did not change in both mouse types. Memory and learning declined with age in diabetic mice, and the AGEs/RAGE/M1-type macrophage/NO and TNF-α pathways played an important role in exacerbating memory and learning in those mice.
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Affiliation(s)
- Keiichi Hiramoto
- Department of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka 513-8670, Japan
| | - Masashi Imai
- Department of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka 513-8670, Japan
| | - Shota Tanaka
- Department of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka 513-8670, Japan
| | - Kazuya Ooi
- Department of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka 513-8670, Japan
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Hiramoto K, Imai M, Tanaka S, Ooi K. Changes in the AGE/Macrophage/TNF-α Pathway Affect Skin Dryness during KK-Ay/Tajcl Mice Aging. Life (Basel) 2023; 13:1339. [PMID: 37374121 DOI: 10.3390/life13061339] [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: 03/20/2023] [Revised: 05/17/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023] Open
Abstract
Skin dryness associated with type 2 diabetes worsens with age; however, the underlying mechanisms remain unclear. Herein, we investigated the effects of aging on skin dryness using a type 2 diabetes mice model. Specific pathogen-free KK-Ay/TaJcl mice of different ages (10, 27, 40, and 50 weeks) were used in this study. The results confirmed that skin dryness worsens with age. Furthermore, increased levels of advanced glycation end products (AGE), prostaglandin E2 (PGE2), and tumor necrosis factor (TNF)-α, along with an increased expression of the major AGE receptor (RAGE), an increased macrophage number, and decreased collagen expression were observed in the skin of aged KK-Ay/TaJcl mice. In conclusion, dry skin conditions worsen with age in diabetic mice, and the AGE/RAGE/PGE2 and TNF-α pathways play an important role in exacerbating skin dryness during aging in these mice.
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Affiliation(s)
- Keiichi Hiramoto
- Department of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka 513-8670, Japan
| | - Masashi Imai
- Department of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka 513-8670, Japan
| | - Shota Tanaka
- Department of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka 513-8670, Japan
| | - Kazuya Ooi
- Department of Pharmaceutical Sciences, Suzuka University of Medical Science, Suzuka 513-8670, Japan
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Fujito A, Hiramoto K, Imai M, Tanaka S, Ooi K. ACTH/cAMP-Mediated Skin Pigmentation Caused By 5-Fluorouracil Administration. Biol Pharm Bull 2023:b23-00108. [PMID: 37197927 DOI: 10.1248/bpb.b23-00108] [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] [Indexed: 05/19/2023]
Abstract
Anticancer drugs exhibit many side effects, including skin pigmentation, which often lowers patient quality of life. However, the mechanism of pigmentation caused by anticancer drugs remains unknown. The purpose of this study was to elucidate the mechanism of anticancer drug-induced skin pigmentation using 5-fluorouracil (5-FU), a widely used anticancer drug. Specific pathogen-free, 9-week-old Hos:HRM-2 male mice were intraperitoneally administered 5-FU daily for 8 weeks. Skin pigmentation was observed at the end of the study. Mice treated with 5-FU were also administered inhibitors of cAMP, α-melanocyte-stimulating hormone (α-MSH), and adrenocorticotropic hormone (ACTH) for analysis. Administration of oxidative stress, nuclear factor-kappa B (NF-κB), cAMP, and ACTH inhibitors reduced pigmentation in 5-FU-treated mice. These results indicate that the oxidative stress/NF-κB/ACTH/cAMP/tyrosinase pathway plays an important role in pigmentation in 5-FU-treated mice.
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Affiliation(s)
- Atsuo Fujito
- Department of Pharmaceutical Sciences, Suzuka University of Medical Science
| | - Keiichi Hiramoto
- Department of Pharmaceutical Sciences, Suzuka University of Medical Science
| | - Masashi Imai
- Department of Pharmaceutical Sciences, Suzuka University of Medical Science
| | - Shota Tanaka
- Department of Pharmaceutical Sciences, Suzuka University of Medical Science
| | - Kazuya Ooi
- Department of Pharmaceutical Sciences, Suzuka University of Medical Science
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7
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Kurth WS, Sulaiman AH, Hospodarsky GB, Menietti JD, Mauk BH, Clark G, Allegrini F, Valek P, Connerney JEP, Waite JH, Bolton SJ, Imai M, Santolik O, Li W, Duling S, Saur J, Louis C. Juno Plasma Wave Observations at Ganymede. Geophys Res Lett 2022; 49:e2022GL098591. [PMID: 37034392 PMCID: PMC10078157 DOI: 10.1029/2022gl098591] [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] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 04/22/2022] [Accepted: 04/27/2022] [Indexed: 06/19/2023]
Abstract
The Juno Waves instrument measured plasma waves associated with Ganymede's magnetosphere during its flyby on 7 June, day 158, 2021. Three distinct regions were identified including a wake, and nightside and dayside regions in the magnetosphere distinguished by their electron densities and associated variability. The magnetosphere includes electron cyclotron harmonic emissions including a band at the upper hybrid frequency, as well as whistler-mode chorus and hiss. These waves likely interact with energetic electrons in Ganymede's magnetosphere by pitch angle scattering and/or accelerating the electrons. The wake is accentuated by low-frequency turbulence and electrostatic solitary waves. Radio emissions observed before and after the flyby likely have their source in Ganymede's magnetosphere.
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Affiliation(s)
- W. S. Kurth
- Department of Physics and AstronomyUniversity of IowaIowa CityIAUSA
| | - A. H. Sulaiman
- Department of Physics and AstronomyUniversity of IowaIowa CityIAUSA
| | | | - J. D. Menietti
- Department of Physics and AstronomyUniversity of IowaIowa CityIAUSA
| | - B. H. Mauk
- The Johns Hopkins University Applied Physics LaboratoryLaurelMDUSA
| | - G. Clark
- The Johns Hopkins University Applied Physics LaboratoryLaurelMDUSA
| | - F. Allegrini
- Southwest Research InstituteSan AntonioTXUSA
- Department of Physics and AstronomyUniversity of Texas at San AntonioSan AntonioTXUSA
| | - P. Valek
- Southwest Research InstituteSan AntonioTXUSA
| | | | - J. H. Waite
- Southwest Research InstituteSan AntonioTXUSA
| | | | - M. Imai
- Department of Electrical Engineering and Information ScienceNational Institute of Technology (KOSEN), Niihama CollegeNiihamaJapan
| | - O. Santolik
- Department of Space PhysicsInstitute of Atmospheric Physics of the Czech Academy of SciencesPragueCzechia
- Faculty of Mathematics and PhysicsCharles UniversityPragueCzechia
| | - W. Li
- Center for Space PhysicsBoston UniversityBostonMAUSA
| | - S. Duling
- Institute of Geophysics and MeteorologyUniversity of CologneCologneGermany
| | - J. Saur
- Institute of Geophysics and MeteorologyUniversity of CologneCologneGermany
| | - C. Louis
- School of Cosmic Physics, DIAS Dunsink ObservatoryDublin Institute for Advanced StudiesDublinIreland
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8
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Rimini M, Rimassa L, Ueshima K, Burgio V, Shigeo S, Tada T, Suda G, Yoo C, Cheon J, Pinato DJ, Lonardi S, Scartozzi M, Iavarone M, Di Costanzo GG, Marra F, Soldà C, Tamburini E, Piscaglia F, Masi G, Cabibbo G, Foschi FG, Silletta M, Pressiani T, Nishida N, Iwamoto H, Sakamoto N, Ryoo BY, Chon HJ, Claudia F, Niizeki T, Sho T, Kang B, D'Alessio A, Kumada T, Hiraoka A, Hirooka M, Kariyama K, Tani J, Atsukawa M, Takaguchi K, Itobayashi E, Fukunishi S, Tsuji K, Ishikawa T, Tajiri K, Ochi H, Yasuda S, Toyoda H, Ogawa C, Nishimur T, Hatanaka T, Kakizaki S, Shimada N, Kawata K, Tanaka T, Ohama H, Nouso K, Morishita A, Tsutsui A, Nagano T, Itokawa N, Okubo T, Arai T, Imai M, Naganuma A, Koizumi Y, Nakamura S, Joko K, Iijima H, Hiasa Y, Pedica F, De Cobelli F, Ratti F, Aldrighetti L, Kudo M, Cascinu S, Casadei-Gardini A. Atezolizumab plus bevacizumab versus lenvatinib or sorafenib in non-viral unresectable hepatocellular carcinoma: an international propensity score matching analysis. ESMO Open 2022; 7:100591. [PMID: 36208496 PMCID: PMC9808460 DOI: 10.1016/j.esmoop.2022.100591] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [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] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 08/21/2022] [Accepted: 08/22/2022] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND A growing body of evidence suggests that non-viral hepatocellular carcinoma (HCC) might benefit less from immunotherapy. MATERIALS AND METHODS We carried out a retrospective analysis of prospectively collected data from consecutive patients with non-viral advanced HCC, treated with atezolizumab plus bevacizumab, lenvatinib, or sorafenib, in 36 centers in 4 countries (Italy, Japan, Republic of Korea, and UK). The primary endpoint was overall survival (OS) with atezolizumab plus bevacizumab versus lenvatinib. Secondary endpoints were progression-free survival (PFS) with atezolizumab plus bevacizumab versus lenvatinib, and OS and PFS with atezolizumab plus bevacizumab versus sorafenib. For the primary and secondary endpoints, we carried out the analysis on the whole population first, and then we divided the cohort into two groups: non-alcoholic fatty liver disease (NAFLD)/non-alcoholic steatohepatitis (NASH) population and non-NAFLD/NASH population. RESULTS One hundred and ninety patients received atezolizumab plus bevacizumab, 569 patients received lenvatinib, and 210 patients received sorafenib. In the whole population, multivariate analysis showed that treatment with lenvatinib was associated with a longer OS [hazard ratio (HR) 0.65; 95% confidence interval (CI) 0.44-0.95; P = 0.0268] and PFS (HR 0.67; 95% CI 0.51-0.86; P = 0.002) compared to atezolizumab plus bevacizumab. In the NAFLD/NASH population, multivariate analysis confirmed that lenvatinib treatment was associated with a longer OS (HR 0.46; 95% CI 0.26-0.84; P = 0.0110) and PFS (HR 0.55; 95% CI 0.38-0.82; P = 0.031) compared to atezolizumab plus bevacizumab. In the subgroup of non-NAFLD/NASH patients, no difference in OS or PFS was observed between patients treated with lenvatinib and those treated with atezolizumab plus bevacizumab. All these results were confirmed following propensity score matching analysis. By comparing patients receiving atezolizumab plus bevacizumab versus sorafenib, no statistically significant difference in survival was observed. CONCLUSIONS The present analysis conducted on a large number of advanced non-viral HCC patients showed for the first time that treatment with lenvatinib is associated with a significant survival benefit compared to atezolizumab plus bevacizumab, in particular in patients with NAFLD/NASH-related HCC.
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Affiliation(s)
- M Rimini
- IRCCS San Raffaele Scientific Institute Hospital, Department of Oncology, Vita-Salute San Raffaele University, Milan, Italy
| | - L Rimassa
- Department of Biomedical Sciences, Humanitas University, Milan, Italy; Medical Oncology and Hematology Unit, Humanitas Cancer Center, IRCCS Humanitas Research Hospital, Milan, Italy
| | - K Ueshima
- Department of Gastroenterology and Hepatology, Kindai University Faculty of Medicine, Higashi-Osaka, Japan
| | - V Burgio
- IRCCS San Raffaele Scientific Institute Hospital, Department of Oncology, Vita-Salute San Raffaele University, Milan, Italy
| | - S Shigeo
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - T Tada
- Department of Internal Medicine, Japanese Red Cross Himeji Hospital, Himeji, Japan
| | - G Suda
- Department of Gastroenterology and Hepatology, Hokkaido, Japan; University Graduate School of Medicine, Sapporo, Japan
| | - C Yoo
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - J Cheon
- Department of Medical Oncology, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Republic of Korea
| | - D J Pinato
- Department of Surgery & Cancer, Imperial College London, Hammersmith Hospital, London, UK; Department of Translational Medicine, Università degli Studi del Piemonte Orientale, Novara, Italy
| | - S Lonardi
- Oncology Unit 3, Veneto Institute of Oncology IOV-IRCCS, Padua, Italy
| | - M Scartozzi
- Medical Oncology, University and University Hospital of Cagliari, Cagliari, Italy
| | - M Iavarone
- Division of Gastroenterology and Hepatology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico di Milano, Milan, Italy
| | | | - F Marra
- Dipartimento di Medicina Sperimentale e Clinica, Università di Firenze, Firenze, Italy
| | - C Soldà
- Oncology Unit 1, Veneto Institute of Oncology IOV-IRCCS, Padua, Italy
| | - E Tamburini
- Department of Oncology and Palliative Care, Cardinale Hospital, Naples, Italy
| | - F Piscaglia
- Division of Internal Medicine, Hepatobiliary and Immunoallergic Disease, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - G Masi
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy; Unit of Medical Oncology 2, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy
| | - G Cabibbo
- Section of Gastroenterology & Hepatology, Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, PROMISE, University of Palermo, Palermo, Italy
| | - F G Foschi
- Internal Medicine, Infermi Hospital, Faenza (AUSL ROMAGNA), Ravenna, Italy
| | - M Silletta
- Division of Medical Oncology, Policlinico Universitario Campus Bio-Medico, Rome, Italy
| | - T Pressiani
- Medical Oncology and Hematology Unit, Humanitas Cancer Center, IRCCS Humanitas Research Hospital, Milan, Italy
| | - N Nishida
- Department of Gastroenterology and Hepatology, Kindai University Faculty of Medicine, Higashi-Osaka, Japan
| | - H Iwamoto
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - N Sakamoto
- Department of Gastroenterology and Hepatology, Hokkaido, Japan; University Graduate School of Medicine, Sapporo, Japan
| | - B-Y Ryoo
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - H J Chon
- Department of Medical Oncology, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Republic of Korea
| | - F Claudia
- Department of Surgery & Cancer, Imperial College London, Hammersmith Hospital, London, UK; Department of Translational Medicine, Università degli Studi del Piemonte Orientale, Novara, Italy
| | - T Niizeki
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - T Sho
- Department of Gastroenterology and Hepatology, Hokkaido, Japan; University Graduate School of Medicine, Sapporo, Japan
| | - B Kang
- Department of Medical Oncology, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Republic of Korea
| | - A D'Alessio
- Department of Surgery & Cancer, Imperial College London, Hammersmith Hospital, London, UK; Department of Translational Medicine, Università degli Studi del Piemonte Orientale, Novara, Italy
| | - T Kumada
- Department of Nursing, Gifu Kyoritsu University, Ogaki, Japan
| | - A Hiraoka
- Gastroenterology Center, Ehime Prefectural Central Hospital, Matsuyama, Japan
| | - M Hirooka
- Department of Gastroenterology and Metabology, Ehime University Graduate School of Medicine, Ehime, Japan
| | - K Kariyama
- Department of Gastroenterology, Okayama City Hospital, Okayama, Japan
| | - J Tani
- Department of Gastroenterology and Hepatology, Kagawa University, Kagawa, Japan
| | - M Atsukawa
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Nippon Medical School, Tokyo, Japan
| | - K Takaguchi
- Department of Hepatology, Kagawa Prefectural Central Hospital, Takamatsu, Japan
| | - E Itobayashi
- Department of Gastroenterology, Asahi General Hospital, Asahi, Japan
| | - S Fukunishi
- Premier Departmental Research of Medicine, Osaka Medical and Pharmaceutical University, Shinya Fukunishi, Osaka, Japan
| | - K Tsuji
- Center of Gastroenterology, Teine Keijinkai Hospital, Sapporo, Japan
| | - T Ishikawa
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - K Tajiri
- Department of Gastroenterology, Toyama University Hospital, Toyama, Japan
| | - H Ochi
- Hepato-biliary Center, Japanese Red Cross Matsuyama Hospital, Matsuyama, Japan
| | - S Yasuda
- Department of Gastroenterology and Hepatology, Ogaki Municipal Hospital, Ogaki, Japan
| | - H Toyoda
- Department of Gastroenterology and Hepatology, Ogaki Municipal Hospital, Ogaki, Japan
| | - C Ogawa
- Department of Gastroenterology, Japanese Red Cross Takamatsu Hospital, Takamatsu, Japan
| | - T Nishimur
- Department of Internal medicine, Division of Gastroenterology and Hepatology, Hyogo College of Medicine, Nishinomiya, Japan
| | - T Hatanaka
- Department of Gastroenterology, Gunma Saiseikai Maebashi Hospital, Maebashi, Japan
| | - S Kakizaki
- Department of Clinical Research, National Hospital Organization Takasaki General Medical Center, Takasaki, Japan
| | - N Shimada
- Division of Gastroenterology and Hepatology, Otakanomori Hospital, Kashiwa, Japan
| | - K Kawata
- Department of Hepatology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - T Tanaka
- Gastroenterology Center, Ehime Prefectural Central Hospital, Matsuyama, Japan
| | - H Ohama
- Premier Departmental Research of Medicine, Osaka Medical and Pharmaceutical University, Shinya Fukunishi, Osaka, Japan
| | - K Nouso
- Department of Gastroenterology, Okayama City Hospital, Okayama, Japan
| | - A Morishita
- Department of Gastroenterology and Hepatology, Kagawa University, Kagawa, Japan
| | - A Tsutsui
- Department of Hepatology, Kagawa Prefectural Central Hospital, Takamatsu, Japan
| | - T Nagano
- Department of Hepatology, Kagawa Prefectural Central Hospital, Takamatsu, Japan
| | - N Itokawa
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Nippon Medical School, Tokyo, Japan
| | - T Okubo
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Nippon Medical School, Tokyo, Japan
| | - T Arai
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Nippon Medical School, Tokyo, Japan
| | - M Imai
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - A Naganuma
- Department of Gastroenterology, National Hospital Organization Takasaki General Medical Center, Takasaki, Japan
| | - Y Koizumi
- Department of Gastroenterology and Metabology, Ehime University Graduate School of Medicine, Ehime, Japan
| | - S Nakamura
- Department of Internal Medicine, Japanese Red Cross Himeji Hospital, Himeji, Japan
| | - K Joko
- Hepato-biliary Center, Japanese Red Cross Matsuyama Hospital, Matsuyama, Japan
| | - H Iijima
- Department of Internal medicine, Division of Gastroenterology and Hepatology, Hyogo College of Medicine, Nishinomiya, Japan
| | - Y Hiasa
- Department of Gastroenterology and Metabology, Ehime University Graduate School of Medicine, Ehime, Japan
| | - F Pedica
- Department of Experimental Oncology, Pathology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - F De Cobelli
- School of Medicine, Vita-Salute San Raffaele University, Milan, Italy
| | - F Ratti
- Hepatobiliary Surgery Division, Liver Center, Vita-Salute San Raffaele University, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - L Aldrighetti
- Hepatobiliary Surgery Division, Liver Center, Vita-Salute San Raffaele University, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - M Kudo
- Department of Gastroenterology and Hepatology, Kindai University Faculty of Medicine, Higashi-Osaka, Japan
| | - S Cascinu
- Department of Oncology, Vita-Salute San Raffaele University, IRCCS San Raffaele Scientific Institute Hospital, Milan, Italy
| | - A Casadei-Gardini
- Department of Oncology, Vita-Salute San Raffaele University, IRCCS San Raffaele Scientific Institute Hospital, Milan, Italy.
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9
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Rimini M, Kudo M, Tada T, Shigeo S, Kang W, Suda G, Jefremow A, Burgio V, Iavarone M, Tortora R, Marra F, Lonardi S, Tamburini E, Piscaglia F, Masi G, Cabibbo G, Foschi FG, Silletta M, Kumada T, Iwamoto H, Aoki T, Goh MJ, Sakamoto N, Siebler J, Hiraoka A, Niizeki T, Ueshima K, Sho T, Atsukawa M, Hirooka M, Tsuji K, Ishikawa T, Takaguchi K, Kariyama K, Itobayashi E, Tajiri K, Shimada N, Shibata H, Ochi H, Yasuda S, Toyoda H, Fukunishi S, Ohama H, Kawata K, Tani J, Nakamura S, Nouso K, Tsutsui A, Nagano T, Takaaki T, Itokawa N, Okubo T, Arai T, Imai M, Joko K, Koizumi Y, Hiasa Y, Cucchetti A, Ratti F, Aldrighetti L, Cascinu S, Casadei-Gardini A. Nonalcoholic steatohepatitis in hepatocarcinoma: new insights about its prognostic role in patients treated with lenvatinib. ESMO Open 2021; 6:100330. [PMID: 34847382 PMCID: PMC8710492 DOI: 10.1016/j.esmoop.2021.100330] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [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] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 10/31/2021] [Accepted: 11/03/2021] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Hepatocellular carcinoma (HCC) treatment remains a big challenge in the field of oncology. The liver disease (viral or not viral) underlying HCC turned out to be crucial in determining the biologic behavior of the tumor, including its response to treatment. The aim of this analysis was to investigate the role of the etiology of the underlying liver disease in survival outcomes. PATIENTS AND METHODS We conducted a multicenter retrospective study on a large cohort of patients treated with lenvatinib as first-line therapy for advanced HCC from both Eastern and Western institutions. Univariate and multivariate analyses were performed. RESULTS Among the 1232 lenvatinib-treated HCC patients, 453 (36.8%) were hepatitis C virus positive, 268 hepatitis B virus positive (21.8%), 236 nonalcoholic steatohepatitis (NASH) correlate (19.2%) and 275 had other etiologies (22.3%). The median progression-free survival (mPFS) was 6.2 months [95% confidence interval (CI) 5.9-6.7 months] and the median overall survival (mOS) was 15.8 months (95% CI 14.9-17.2 months). In the univariate analysis for OS NASH-HCC was associated with longer mOS [22.2 versus 15.1 months; hazard ratio (HR) 0.69; 95% CI 0.56-0.85; P = 0.0006]. In the univariate analysis for PFS NASH-HCC was associated with longer mPFS (7.5 versus 6.5 months; HR 0.84; 95% CI 0.71-0.99; P = 0.0436). The multivariate analysis confirmed NASH-HCC (HR 0.64; 95% CI 0.48-0.86; P = 0.0028) as an independent prognostic factor for OS, along with albumin-bilirubin (ALBI) grade, extrahepatic spread, neutrophil-to-lymphocyte ratio, portal vein thrombosis, Eastern Cooperative Oncology Group (ECOG) performance status and alpha-fetoprotein. An interaction test was performed between sorafenib and lenvatinib cohorts and the results highlighted the positive predictive role of NASH in favor of the lenvatinib arm (P = 0.0047). CONCLUSION NASH has been identified as an independent prognostic factor in a large cohort of patients with advanced HCC treated with lenvatinib, thereby suggesting the role of the etiology in the selection of patients for tyrosine kinase treatment. If validated, this result could provide new insights useful to improve the management of these patients.
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Affiliation(s)
- M Rimini
- Department of Oncology and Hematology, Division of Oncology, University of Modena and Reggio Emilia, Modena, Italy
| | - M Kudo
- Department of Gastroenterology and Hepatology, Kindai University Faculty of Medicine, Higashi-osaka, Japan
| | - T Tada
- Department of Internal Medicine, Japanese Red Cross Himeji Hospital, Himeji, Japan
| | - S Shigeo
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Fukuoka, Japan
| | - W Kang
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea; Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology (SAIHST), Sungkyunkwan University, Seoul, Korea
| | - G Suda
- Department of Gastroenterology and Hepatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - A Jefremow
- Department of Medicine 1, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nuremberg, Erlangen, Germany; Deutsches Zentrum Immuntherapie (DZI), Erlangen, Germany
| | - V Burgio
- Department of Oncology, IRCCS San Raffaele Scientific Institute Hospital, Milan, Italy
| | - M Iavarone
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico di Milano, Division of Gastroenterology and Hepatology, Milan, Italy
| | - R Tortora
- Liver Unit, Department of Transplantation, Cardarelli Hospital, Naples, Italy
| | - F Marra
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - S Lonardi
- Medical Oncology Unit 3, Department of Oncology, Veneto Institute of Oncology IOV-IRCCS, Padua, Italy
| | - E Tamburini
- Department of Medical Oncology, Card. G. Panico Hospital of Tricase, Tricase, Italy
| | - F Piscaglia
- Division of Internal Medicine, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - G Masi
- Unit of Medical Oncology, Pisa University Hospital, Pisa, Italy
| | - G Cabibbo
- Section of Gastroenterology & Hepatology, Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, PROMISE, University of Palermo, Palermo, Italy
| | - F G Foschi
- Azienda Unità Sanitaria della Romagna, Ospedale degli Infermi, Faenza, Italy
| | - M Silletta
- Medical Oncology Unit, University Campus Bio-Medico, Rome, Italy
| | - T Kumada
- Faculty of Nursing, Gifu Kyoritsu University, Ogaki, Japan
| | - H Iwamoto
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Fukuoka, Japan
| | - T Aoki
- Department of Gastroenterology and Hepatology, Kindai University Faculty of Medicine, Higashi-osaka, Japan
| | - M J Goh
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - N Sakamoto
- Department of Gastroenterology and Hepatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - J Siebler
- Department of Medicine 1, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nuremberg, Erlangen, Germany; Deutsches Zentrum Immuntherapie (DZI), Erlangen, Germany
| | - A Hiraoka
- Gastroenterology Center, Ehime Prefectural Central Hospital, Matsuyama, Japan
| | - T Niizeki
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Fukuoka, Japan
| | - K Ueshima
- Department of Gastroenterology and Hepatology, Kindai University Faculty of Medicine, Higashi-osaka, Japan
| | - T Sho
- Department of Gastroenterology and Hepatology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - M Atsukawa
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Nippon Medical School, Tokyo, Japan
| | - M Hirooka
- Department of Gastroenterology and Metabology, Ehime University Graduate School of Medicine, Matsuyama, Japan
| | - K Tsuji
- Center of Gastroenterology, Teine Keijinkai Hospital, Sapporo, Japan
| | - T Ishikawa
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - K Takaguchi
- Department of Hepatology, Kagawa Prefectural Central Hospital, Takamatsu, Japan
| | - K Kariyama
- Department of Gastroenterology, Okayama City Hospital, Okayama, Japan
| | - E Itobayashi
- Department of Gastroenterology, Asahi General Hospital, Asahi, Japan
| | - K Tajiri
- Department of Gastroenterology, Toyama University Hospital, Toyama, Japan
| | - N Shimada
- Division of Gastroenterology and Hepatology, Otakanomori Hospital, Kashiwa, Japan
| | - H Shibata
- Department of Gastroenterology, Tokushima Prefectural Central Hospital, Tokushima, Japan
| | - H Ochi
- Hepato-biliary Center, Matsuyama Red Cross Hospital, Matsuyama, Japan
| | - S Yasuda
- Department of Gastroenterology and Hepatology, Ogaki Municipal Hospital, Ogaki, Japan
| | - H Toyoda
- Department of Gastroenterology and Hepatology, Ogaki Municipal Hospital, Ogaki, Japan
| | - S Fukunishi
- Second Department of Internal Medicine, Osaka Medical College, Takatsuki, Japan
| | - H Ohama
- Second Department of Internal Medicine, Osaka Medical College, Takatsuki, Japan
| | - K Kawata
- Hepatology Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - J Tani
- Department of Gastroenterology and Neurology, Kagawa University School of Medicine, Kagawa, Japan
| | - S Nakamura
- Department of Internal Medicine, Japanese Red Cross Himeji Hospital, Himeji, Japan
| | - K Nouso
- Department of Gastroenterology, Okayama City Hospital, Okayama, Japan
| | - A Tsutsui
- Department of Hepatology, Kagawa Prefectural Central Hospital, Takamatsu, Japan
| | - T Nagano
- Department of Hepatology, Kagawa Prefectural Central Hospital, Takamatsu, Japan
| | - T Takaaki
- Gastroenterology Center, Ehime Prefectural Central Hospital, Matsuyama, Japan
| | - N Itokawa
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Nippon Medical School, Tokyo, Japan
| | - T Okubo
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Nippon Medical School, Tokyo, Japan
| | - T Arai
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Nippon Medical School, Tokyo, Japan
| | - M Imai
- Department of Gastroenterology, Saiseikai Niigata Hospital, Niigata, Japan
| | - K Joko
- Gastroenterology Center, Ehime Prefectural Central Hospital, Matsuyama, Japan
| | - Y Koizumi
- Gastroenterology Center, Ehime Prefectural Central Hospital, Matsuyama, Japan
| | - Y Hiasa
- Gastroenterology Center, Ehime Prefectural Central Hospital, Matsuyama, Japan
| | - A Cucchetti
- Department of Medical and Surgical Sciences-DIMEC, Alma Mater Studiorum - University of Bologna, Bologna, Italy; Department of Surgery, Morgagni - Pierantoni Hospital, Forlì, Italy
| | - F Ratti
- Hepatobiliary Surgery Division, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - L Aldrighetti
- Hepatobiliary Surgery Division, IRCCS San Raffaele Scientific Institute, Milan, Italy; Vita-Salute San Raffaele University, Milan, Italy
| | - S Cascinu
- Vita-Salute San Raffaele University, Milan, Italy; Department of Oncology, IRCCS San Raffaele Scientific Institute Hospital, Milan, Italy
| | - A Casadei-Gardini
- Department of Oncology, IRCCS San Raffaele Scientific Institute Hospital, Milan, Italy; Vita-Salute San Raffaele University, Milan, Italy.
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Kage H, Sunami K, Naito Y, Amano T, Ennishi D, Imai M, Kanai M, Kenmotsu H, Komine K, Koyama T, T. M, Morita S, Saigusa Y, Sakai D, Yamanaka T, Kohsaka S, Tsuchihara K, Yoshino T. 519MO Concordance analysis of treatment recommendations between central consensus and multidisciplinary tumor boards. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1041] [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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11
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Komine K, Sunami K, Naito Y, Amano T, Ennishi D, Imai M, Kage H, Kanai M, Kenmotsu H, Koyama T, T. M, Morita S, Sakai D, Kohsaka S, Tsuchihara K, Saigusa Y, Yamanaka T, Yoshino T. 551P Chronological improvement in precision oncology implementation in Japan. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1073] [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: 10/20/2022] Open
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12
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Takaishi A, Kisinoue T, Mori H, Yoshino T, Yamaji T, Yasuhara K, Tanimoto M, Kagawa K, Onishi N, Imai M, Ueeda M. Our unique clinical pathway for congestive heart failure cases required admission achieved a dramatic reduction of their hospitalization period and a significant reduction of readmission with heart fa. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1241] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
In recent years, the number of elderly congestive heart failure (CHF) cases has been increasing in Japan with the aging of the population. This tendency is particularly remarkable in rural areas where our facilities are located. After admission with CHF, the hospitalization period (PE) was prolonged due to various complications unique to the elderly, and re-exacerbation of CHF occurred shortly after discharge. Approximately 30% of them were readmitted within one year. From August 2015, for shortening of PE and reduction of CHF readmission through the efficiency of CHF treatment and comprehensive patient education, we had introduced a unique clinical pathway (PATH) that provided the immediate use of Tolvaptan and comprehensive education by multi-disciplinary staff after admission.
Purpose
In this study, we verified whether the improvement of clinical prognosis were achieved by introduction of PATH.
Methods
Between April 2014 and July 2019, 635 CHF cases (764 admissions) ware enrolled. We divided them to two groups, N-group before introducing PATH (198 cases, 262 admissions) and P-group applied PATH (437 cases, 502 admission). Between both groups, we compared the various acute care situation, PE and readmission rate with CHF within 1 year after discharge.
Results
There were no differences between P and N-group in mean age, distribution of underlying illness or daily activity level before admission. There ware not also differences about left ventricle function by echocardiography and various blood test data at admission. The enforcement rate of continuous infusion and the rate of urinary catheter placement were significantly lower in the P-group (71 vs 88%; p<0.0001, 52 vs 63%; p<0.01, respectively). And their enforcement duration was significantly shorter in P-group (4.6±5.3 vs 10.5±9.6 days; p<0.0001, 6.3±7.9 vs 12.8±13.1 days; p<0.0001 respectively). The enforcement rate of cardiac rehabilitation was significantly higher in group P (94 vs 84%; p<0.0001), and the starting time of rehabilitation was significantly earlier (2.9±1.5 vs 6.3±4.8th illness day; p<0.0001). As a result, the average HP was significantly shorter in group P (16.5±13.4 vs 28.6±24.1 days, p<0.0001). The readmission rate with CHF within one year after discharge was significantly lower in group P (23 vs 36%; p<0.001).
Conclusion
By the introduction of our original clinical pathway for congestive heart failure, the efficiency of medical care was achieved and the mean hospitalization period was widely shortened. In addition, by the through comprehensive patient education by multi-disciplinary staff involved in the pathway, the self-restraint life style after discharge seemed to be maintained and the readmission with worsening of heart failure was significantly suppressed.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
| | | | - H Mori
- Mitoyo General Hospital, Kanonji, Japan
| | - T Yoshino
- Mitoyo General Hospital, Kanonji, Japan
| | - T Yamaji
- Mitoyo General Hospital, Kanonji, Japan
| | | | | | - K Kagawa
- Mitoyo General Hospital, Kanonji, Japan
| | - N Onishi
- Mitoyo General Hospital, Kanonji, Japan
| | - M Imai
- Mitoyo General Hospital, Kanonji, Japan
| | - M Ueeda
- Ueeda cardiovasculal clinic, Toyonaka, Japan
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13
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Saito M, Imai M, Wake D, Higaki R, Sumimoto T, Inaba S. P305Prognostic value of relative apical sparing pattern of longitudinal strain in patients with severe aortic stenosis. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0140] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
The relative apical sparing pattern (RASP) of left ventricular longitudinal strain (LS) is determined on the strain polar map, while global longitudinal strain (GLS) is measured using speckle-tracking echocardiography and is frequently associated with cardiac amyloidosis (CA). According to recent reports, some elderly patients with aortic stenosis (AS) suffer from transthyretin CA and have a poor prognosis. Accordingly, we aimed to investigate the association of RASP and outcome of patients with severe AS.
Methods
We retrospectively studied 157 consecutive patients (age: 81±10 years, 33% men) with severe AS (mean transaortic pressure gradient: 49 mmHg) and preserved ejection fraction (>50%). After measuring GLS, RASP was semi-quantitatively and quantitatively assessed. Semi-quantitative RASP (sRASP) was defined as reduction of LS (more than −10%), showing light red or blue in ≥5 segments out of the basal six segments, relative to apical LS (less than −15%) showing red. This analysis was independently performed in a blinded manner by two observers. Quantitative RASP (qRASP) was calculated using the following formula: average apical LS/(average basal LS + average mid-ventricle LS), then qRASP ≥1 was determined as positive according to the previous paper. Patients were followed up to determine their outcomes, i.e., sudden cardiac death or unexpected admission due to heart failure over a median duration of 1.9 years. Concordance of sRASP was assessed using the kappa statistic, and a Cox proportional hazards model was used to assess the association between the parameters and primary outcome.
Results
The consistency in the observations of the two sonographers in identifying sRASP was found to be excellent (κ = 1.00). sRASP and qRASP were observed in 24 (15%) and 42 (27%) patients, respectively, and were significantly associated with the primary outcome (n=44; 28%). The representative case is shown in figure (left panel). Further, positive sRASP was associated with the outcome after adjusting for the Euro score, NYHA ≥II, and GLS (hazard ratio = 2.69, p=0.01). The model based on these covariates significantly improved following the addition of sRASP (Figure; right panel). In addition, sRASP was observed in four patients out of 50 patients who underwent aortic valve replacement. Of these, one patient had the primary outcome (25%). On the other hand, in the remaining 46 patients without sRASP, four patients had the outcome (9%).
Figure 1
Conclusions
RASP was observed in some patients with severe AS and has been shown to have increasing importance in predicting adverse cardiac events in such patients.
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Affiliation(s)
- M Saito
- Kitaishikai Hospital, Ozu, Japan
| | - M Imai
- Kitaishikai Hospital, Ozu, Japan
| | - D Wake
- Kitaishikai Hospital, Ozu, Japan
| | - R Higaki
- Kitaishikai Hospital, Ozu, Japan
| | | | - S Inaba
- Kitaishikai Hospital, Ozu, Japan
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Imai M, Mine K, Tomonari H, Uchiyama J, Matuzaki S, Niko Y, Hadano S, Watanabe S. Dark-Field Microscopic Detection of Bacteria using Bacteriophage-Immobilized SiO 2@AuNP Core-Shell Nanoparticles. Anal Chem 2019; 91:12352-12357. [PMID: 31464422 DOI: 10.1021/acs.analchem.9b02715] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
To replace molecular biological and immunological methods, biosensors have recently been developed for the rapid and sensitive detection of bacteria. Among a wide variety of biological materials, bacteriophages have received increasing attention as promising alternatives to antibodies in biosensor applications. Thus, we herein present a rapid and highly selective detection method for pathogenic bacteria, which combines dark-field light scattering imaging with a plasmonic biosensor system. The plasmonic biosensor system employs bacteriophages as the biorecognition element and the aggregation-induced light scattering signal of gold nanoparticle-assembled silica nanospheres as a signal transducer. Using Staphylococcus aureus strain SA27 as a model analyte, we demonstrated that the plasmonic biosensor system detects S. aureus in the presence of excess Escherichia coli in a highly selective manner. After the sample and the S. aureus phage S13'-conjugated plasmon scattering probe were mixed, S. aureus detection was completed within 15-20 min with a detection limit of 8 × 104 colony forming units per milliliter.
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Affiliation(s)
| | | | | | - Jumpei Uchiyama
- School of Veterinary Medicine , Azabu University , 1-17-71 Fuchinobe , Sagamihara-shi 229-8501 , Kanagawa , Japan
| | - Shigenobu Matuzaki
- Department of Microbiology and Infection, Kochi Medical School , Kochi University , Kohasu, Okoh-cho , Nankoku-shi 780-8505 , Kochi , Japan
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Mizuno T, Tomita N, Uchiyama K, Sugie C, Imai M, Ayakawa S, Niwa M, Matsui T, Otsuka S, Manabe Y, Nomura K, Kondo T, Kosaki K, Akifumi M, Miyamoto A, Takemoto S, Yasui T, Shibamoto Y. Impact of Early Salvage Radiotherapy in Patients with Biochemical Recurrence after Radical Prostatectomy: Results of a Multi-institutional Retrospective Study. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.1843] [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]
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Yamazaki S, Odanaka M, Shime H, Imai M, Hemmi H, Kaisho T, Ohkura N, Sakaguchi S, Morita A. 051 Dermal dendritic cells present neo-self antigens induced by ultraviolet B exposure to expand Foxp3+ regulatory T cells. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.127] [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]
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Ebert RW, Greathouse TK, Clark G, Allegrini F, Bagenal F, Bolton SJ, Connerney JEP, Gladstone GR, Imai M, Hue V, Kurth WS, Levin S, Louarn P, Mauk BH, McComas DJ, Paranicas C, Szalay JR, Thomsen MF, Valek PW, Wilson RJ. Comparing Electron Energetics and UV Brightness in Jupiter's Northern Polar Region During Juno Perijove 5. Geophys Res Lett 2019; 46:19-27. [PMID: 30828110 PMCID: PMC6378591 DOI: 10.1029/2018gl081129] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 12/14/2018] [Accepted: 12/20/2018] [Indexed: 05/24/2023]
Abstract
We compare electron and UV observations mapping to the same location in Jupiter's northern polar region, poleward of the main aurora, during Juno perijove 5. Simultaneous peaks in UV brightness and electron energy flux are identified when observations map to the same location at the same time. The downward energy flux during these simultaneous observations was not sufficient to generate the observed UV brightness; the upward energy flux was. We propose that the primary acceleration region is below Juno's altitude, from which the more intense upward electrons originate. For the complete interval, the UV brightness peaked at ~240 kilorayleigh (kR); the downward and upward energy fluxes peaked at 60 and 700 mW/m2, respectively. Increased downward energy fluxes are associated with increased contributions from tens of keV electrons. These observations provide evidence that bidirectional electron beams with broad energy distributions can produce tens to hundreds of kilorayleigh polar UV emissions.
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Affiliation(s)
- R. W. Ebert
- Southwest Research InstituteSan AntonioTXUSA
- Department of Physics and AstronomyUniversity of Texas at San AntonioSan AntonioTXUSA
| | | | - G. Clark
- Johns Hopkins University Applied Physics LabLaurelMDUSA
| | - F. Allegrini
- Southwest Research InstituteSan AntonioTXUSA
- Department of Physics and AstronomyUniversity of Texas at San AntonioSan AntonioTXUSA
| | - F. Bagenal
- Laboratory for Atmospheric and Space PhysicsUniversity of Colorado BoulderBoulderCOUSA
| | | | | | - G. R. Gladstone
- Southwest Research InstituteSan AntonioTXUSA
- Department of Physics and AstronomyUniversity of Texas at San AntonioSan AntonioTXUSA
| | - M. Imai
- Department of Physics and AstronomyUniversity of IowaIowa CityIAUSA
| | - V. Hue
- Southwest Research InstituteSan AntonioTXUSA
| | - W. S. Kurth
- Department of Physics and AstronomyUniversity of IowaIowa CityIAUSA
| | - S. Levin
- Jet Propulsion LaboratoryPasadenaCAUSA
| | - P. Louarn
- Institut de Recherche en Astrophysique et PlanétologieToulouseFrance
| | - B. H. Mauk
- Johns Hopkins University Applied Physics LabLaurelMDUSA
| | - D. J. McComas
- Southwest Research InstituteSan AntonioTXUSA
- Department of Astrophysical SciencesPrinceton UniversityPrincetonNJUSA
| | - C. Paranicas
- Johns Hopkins University Applied Physics LabLaurelMDUSA
| | - J. R. Szalay
- Department of Astrophysical SciencesPrinceton UniversityPrincetonNJUSA
| | | | - P. W. Valek
- Southwest Research InstituteSan AntonioTXUSA
| | - R. J. Wilson
- Laboratory for Atmospheric and Space PhysicsUniversity of Colorado BoulderBoulderCOUSA
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18
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Ebert RW, Greathouse TK, Clark G, Allegrini F, Bagenal F, Bolton SJ, Connerney JEP, Gladstone GR, Imai M, Hue V, Kurth WS, Levin S, Louarn P, Mauk BH, McComas DJ, Paranicas C, Szalay JR, Thomsen MF, Valek PW, Wilson RJ. Comparing Electron Energetics and UV Brightness in Jupiter's Northern Polar Region During Juno Perijove 5. Geophys Res Lett 2019; 46:19-27. [PMID: 30828110 DOI: 10.1029/2019gl084146] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 12/14/2018] [Accepted: 12/20/2018] [Indexed: 05/24/2023]
Abstract
We compare electron and UV observations mapping to the same location in Jupiter's northern polar region, poleward of the main aurora, during Juno perijove 5. Simultaneous peaks in UV brightness and electron energy flux are identified when observations map to the same location at the same time. The downward energy flux during these simultaneous observations was not sufficient to generate the observed UV brightness; the upward energy flux was. We propose that the primary acceleration region is below Juno's altitude, from which the more intense upward electrons originate. For the complete interval, the UV brightness peaked at ~240 kilorayleigh (kR); the downward and upward energy fluxes peaked at 60 and 700 mW/m2, respectively. Increased downward energy fluxes are associated with increased contributions from tens of keV electrons. These observations provide evidence that bidirectional electron beams with broad energy distributions can produce tens to hundreds of kilorayleigh polar UV emissions.
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Affiliation(s)
- R W Ebert
- Southwest Research Institute San Antonio TX USA
- Department of Physics and Astronomy University of Texas at San Antonio San Antonio TX USA
| | | | - G Clark
- Johns Hopkins University Applied Physics Lab Laurel MD USA
| | - F Allegrini
- Southwest Research Institute San Antonio TX USA
- Department of Physics and Astronomy University of Texas at San Antonio San Antonio TX USA
| | - F Bagenal
- Laboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder CO USA
| | - S J Bolton
- Southwest Research Institute San Antonio TX USA
| | | | - G R Gladstone
- Southwest Research Institute San Antonio TX USA
- Department of Physics and Astronomy University of Texas at San Antonio San Antonio TX USA
| | - M Imai
- Department of Physics and Astronomy University of Iowa Iowa City IA USA
| | - V Hue
- Southwest Research Institute San Antonio TX USA
| | - W S Kurth
- Department of Physics and Astronomy University of Iowa Iowa City IA USA
| | - S Levin
- Jet Propulsion Laboratory Pasadena CA USA
| | - P Louarn
- Institut de Recherche en Astrophysique et Planétologie Toulouse France
| | - B H Mauk
- Johns Hopkins University Applied Physics Lab Laurel MD USA
| | - D J McComas
- Southwest Research Institute San Antonio TX USA
- Department of Astrophysical Sciences Princeton University Princeton NJ USA
| | - C Paranicas
- Johns Hopkins University Applied Physics Lab Laurel MD USA
| | - J R Szalay
- Department of Astrophysical Sciences Princeton University Princeton NJ USA
| | | | - P W Valek
- Southwest Research Institute San Antonio TX USA
| | - R J Wilson
- Laboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder CO USA
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19
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Taguchi S, Oguchi M, Motoko Y, Suzuki R, Ejima Y, Hasegawa M, Ishibashi N, Isobe K, Kasuya T, Sasai K, Shimoda E, Soejima T, Imai M. The Primary Tumor Invasion and Soluble Interleukin-2 Receptor As Prognostic Factors for Localized Nasal NK/T-Cell Lymphoma: The Multi-Institutional Retrospective Study (NKEA project) in Japan. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.084] [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: 11/30/2022]
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20
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Tsunematsu M, Imai M, Imai K. Influence of Washing Hands and Using Gloves During Hygienic Operations Involving Acupuncture Needles: Observation of Bacteriological Tests. J Acupunct Meridian Stud 2018. [DOI: 10.1016/j.jams.2018.08.206] [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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21
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Nogawa S, Abe T, Shigematsu H, Chin Y, Nakayama T, Imai M, Tokuoka K, Oda S, Shimoda M. DWI-aspects and NIHSS at baseline predict good responsiveness to endovascular thrombectomy following thrombolysis in large cerebral vessel occlusion. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1788] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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22
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Ishibashi N, Soejima T, Kawaguchi H, Oguchi M, Sasai K, Hasegawa M, Isobe K, Ejima Y, Ito H, Imai M, Kasuya T, Shimoda E, Akimoto T. National Survey of Japan for Myeloablative Total Body Irradiation Prior to Hematopoietic Stem Cell Transplantation. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1630] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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23
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Nakajima T, Ono Y, Kaneko Y, Saito A, Imai M, Iizuka T, Irie T, Funada R, Takama N, Kasama S, Nakamura K, Niwamae N, Tange S, Kurabayashi M. P799The clinical and genetic predispositions to ventricular tachyarrhythmias associated with vasospastic angina. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.p799] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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24
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Kato K, Hodgson WJ, Abraham NG, Onodera K, Imai M, Kasai S, Mito M. Expression and Inducibility of Cytochrome P450 Iiia Family within Intrasplenically Transplanted Fetal Hepatocytes. Cell Transplant 2017; 5:117-22. [PMID: 8665072 DOI: 10.1177/096368979600500116] [Citation(s) in RCA: 2] [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: 11/17/2022] Open
Abstract
With the development of transplantation of hepatocytes into the spleen, interest has focused on the metabolic changes associated with hepatocyte proliferation. As these changes are important for drug metabolism in hepatocytes, we examined the expression and inducibility of the cytochrome P450 IIIA family within transplanted hepatocytes. Fetal hepatocytes were harvested at 20 days of gestation from spontaneously hypertensive rats (SHRs) and transplanted into recipient adult SHR spleens. Microscopic examination of the recipient spleens 4 and 10 wk after transplantation revealed masses of hepatocytes with cordlike structures in the red pulp. Proliferating hepatocytes were detected with a bromodeoxyuridine (BrdU) immunohistochemical stain. Immunochemical studies detected cytochromes (cytos) P450 p and P450 HLp in fetal hepatocytes before transplantation without prior induction. And although these cytos were not detected by 10 wk after transplantation, they were induced with dexamethasone. These results demonstrated that fetal hepatocytes can be transplanted successfully into recipient spleens and suggested that fetal hepatocytes grow in the spleen, similar to the adult hepatocyte response.
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Affiliation(s)
- K Kato
- Department of Medicine and Gastrointestinal Surgery, New York Medical College, Valhalla 10595, USA
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Miyawaki S, Araki Y, Tanimoto Y, Katayama A, Fujii A, Imai M, Takano-Yamamoto T. Occlusal Force and Condylar Motion in Patients with Anterior Open Bite. J Dent Res 2016; 84:133-7. [PMID: 15668329 DOI: 10.1177/154405910508400205] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [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: 11/16/2022] Open
Abstract
Patients with open bite often show a weak occlusal force and temporomandibular disorders (TMDs). If these are the main cause of open bite, it may be hypothesized that both pre-pubertal and adult open-bite patients would show a weak occlusal force and abnormal condylar motion. The purpose of this study was to test this hypothesis. Test group subjects consisted of 13 consecutive pre-pubertal and 13 adult patients with anterior open bite. They were compared with age-matched normal subjects. The adult open-bite group showed a weaker occlusal force and a shorter range of condylar motion compared with the control subjects. In the pre-pubertal subjects, however, there were no significant differences in the occlusal force and range of condylar motion between the open-bite and control groups. Therefore, these results suggest that a weak occlusal force or TMDs may not be the main cause of open bite.
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Affiliation(s)
- S Miyawaki
- Department of Orthodontics and Dentofacial Orthopedics, Okayama University Graduate School of Medicine and Dentistry, 2-5-1, Shikata-cho, Okayama, 700-8525, Japan
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Shimoda M, Oda S, Hirayama A, Imai M, Komatsu F, Hoshikawa K, Shigematsu H, Nishiyama J, Osada T. Centripetal Propagation of Vasoconstriction at the Time of Headache Resolution in Patients with Reversible Cerebral Vasoconstriction Syndrome. AJNR Am J Neuroradiol 2016; 37:1594-8. [PMID: 27079368 DOI: 10.3174/ajnr.a4768] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 02/05/2016] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Reversible cerebral vasoconstriction syndrome is characterized by thunderclap headache and diffuse segmental vasoconstriction that resolves spontaneously within 3 months. Previous reports have proposed that vasoconstriction first involves small distal arteries and then progresses toward major vessels at the time of thunderclap headache remission. The purpose of this study was to confirm centripetal propagation of vasoconstriction on MRA at the time of thunderclap headache remission compared with MRA at the time of reversible cerebral vasoconstriction syndrome onset. MATERIALS AND METHODS Of the 39 patients diagnosed with reversible cerebral vasoconstriction syndrome at our hospital during the study period, participants comprised the 16 patients who underwent MR imaging, including MRA, within 72 hours of reversible cerebral vasoconstriction syndrome onset (initial MRA) and within 48 hours of thunderclap headache remission. RESULTS In 14 of the 16 patients (87.5%), centripetal propagation of vasoconstriction occurred from the initial MRA to remission of thunderclap headache, with typical segmental vasoconstriction of major vessels. These mainly involved the M1 portion of the MCA (10 cases), P1 portion of the posterior cerebral artery (10 cases), and A1 portion of the anterior cerebral artery (5 cases). CONCLUSIONS This study found evidence of centripetal propagation of vasoconstriction on MRA obtained at the time of thunderclap headache remission, compared with MRA obtained at the time of reversible cerebral vasoconstriction syndrome onset. If clinicians remain unsure of the diagnosis during early-stage reversible cerebral vasoconstriction syndrome, this time point represents the best opportunity to diagnose reversible cerebral vasoconstriction syndrome with confidence.
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Affiliation(s)
- M Shimoda
- From the Department of Neurosurgery (M.S., S.O., A.H., M.I., F.K., K.H.), Tokai University Hachioji Hospital, Tokyo, Japan
| | - S Oda
- From the Department of Neurosurgery (M.S., S.O., A.H., M.I., F.K., K.H.), Tokai University Hachioji Hospital, Tokyo, Japan
| | - A Hirayama
- From the Department of Neurosurgery (M.S., S.O., A.H., M.I., F.K., K.H.), Tokai University Hachioji Hospital, Tokyo, Japan
| | - M Imai
- From the Department of Neurosurgery (M.S., S.O., A.H., M.I., F.K., K.H.), Tokai University Hachioji Hospital, Tokyo, Japan
| | - F Komatsu
- From the Department of Neurosurgery (M.S., S.O., A.H., M.I., F.K., K.H.), Tokai University Hachioji Hospital, Tokyo, Japan
| | - K Hoshikawa
- From the Department of Neurosurgery (M.S., S.O., A.H., M.I., F.K., K.H.), Tokai University Hachioji Hospital, Tokyo, Japan
| | - H Shigematsu
- Department of Neurosurgery (H.S., J.N., T.O.), Tokai University School of Medicine, Kanagawa, Japan
| | - J Nishiyama
- Department of Neurosurgery (H.S., J.N., T.O.), Tokai University School of Medicine, Kanagawa, Japan
| | - T Osada
- Department of Neurosurgery (H.S., J.N., T.O.), Tokai University School of Medicine, Kanagawa, Japan
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Kawamura F, Yamada N, Imai M, Taniguchi T. Synthesis of ZnSnN2crystals via a high-pressure metathesis reaction. Crystal Research and Technology 2016. [DOI: 10.1002/crat.201500258] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- F. Kawamura
- National Institute for Materials Science (NIMS); Namiki 1-1 Tsukuba, Ibaraki 305-0044 Japan
| | - N. Yamada
- Department of Applied Chemistry; Chubu University; 1200 Matsumoto Kasugai Aichi 487-8501 Japan
| | - M. Imai
- National Institute for Materials Science (NIMS); Sengen 1-2-1 Tsukuba Ibaraki 305-0047 Japan
| | - T. Taniguchi
- National Institute for Materials Science (NIMS); Namiki 1-1 Tsukuba, Ibaraki 305-0044 Japan
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28
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Oda S, Shimoda M, Hirayama A, Imai M, Komatsu F, Shigematsu H, Nishiyama J, Matsumae M. Reply: To PMID 25977479. AJNR Am J Neuroradiol 2015; 36:E64. [PMID: 26185327 DOI: 10.3174/ajnr.a4480] [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: 11/07/2022]
Affiliation(s)
- S Oda
- Department of Neurosurgery Tokai University Hachioji Hospital Tokyo, Japan
| | - M Shimoda
- Department of Neurosurgery Tokai University Hachioji Hospital Tokyo, Japan
| | - A Hirayama
- Department of Neurosurgery Tokai University Hachioji Hospital Tokyo, Japan
| | - M Imai
- Department of Neurosurgery Tokai University Hachioji Hospital Tokyo, Japan
| | - F Komatsu
- Department of Neurosurgery Tokai University Hachioji Hospital Tokyo, Japan
| | - H Shigematsu
- Department of Neurosurgery Tokai University Hachioji Hospital Tokyo, Japan
| | - J Nishiyama
- Department of Neurosurgery Tokai University Hachioji Hospital Tokyo, Japan
| | - M Matsumae
- Department of Neurosurgery Tokai University School of Medicine Kanagawa, Japan
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29
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Imai M, Arimura H, Nonaka A, Nakamura K, Shioyama Y, Honda H, Hirata H. SU-E-T-696: Similar-Case-Based Framework of Beam Angle Configurations Using Treatment-Plan-Related Features in Lung Stereotactic Body Radiation Therapy. Med Phys 2015. [DOI: 10.1118/1.4925060] [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: 11/07/2022] Open
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30
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Oda S, Shimoda M, Hirayama A, Imai M, Komatsu F, Shigematsu H, Nishiyama J, Matsumae M. Neuroradiologic Diagnosis of Minor Leak prior to Major SAH: Diagnosis by T1-FLAIR Mismatch. AJNR Am J Neuroradiol 2015; 36:1616-22. [PMID: 25977479 DOI: 10.3174/ajnr.a4325] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Accepted: 02/09/2015] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE In major SAH, the only method to diagnose a preceding minor leak is to ascertain the presence of a warning headache by interview; however, poor clinical condition and recall bias can cause inaccuracy. We devised a neuroradiologic method to diagnose previous minor leak in patients with SAH and attempted to determine whether warning (sentinel) headaches were associated with minor leaks before major SAH. MATERIALS AND METHODS We retrospectively evaluated 127 patients who were admitted with SAH within 48 hours of ictus. Previous minor leak before major SAH was defined as T1WI-detected clearly bright hyperintense subarachnoid blood accompanied by SAH blood on FLAIR images that was distributed over a larger area than bright hyperintense subarachnoid blood on T1WI (T1-FLAIR mismatch). RESULTS The incidence of warning headache before SAH was 11.0% (14 of 127 patients, determined by interview). The incidence of T1-FLAIR mismatch (neuroradiologic diagnosis of minor leak before major SAH) was 33.9% (43 of 127 patients). Of the 14 patients with warning headache, 13 had a minor leak diagnosed by T1-FLAIR mismatch at the time of admission. Variables identified by multivariate analysis as significantly associated with minor leak diagnosed by T1-FLAIR mismatch included 80 years of age or older, rebleeding after admission, intracerebral hemorrhage on CT, and mRS scores of 3-6. CONCLUSIONS We conclude that warning headaches diagnosed by interview are not a product of recall bias but are the result of actual leaks from aneurysms.
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Affiliation(s)
- S Oda
- From the Department of Neurosurgery (S.O., M.S., A.H., M.I., F.K., H.S., J.N.), Tokai University Hachioji Hospital, Tokyo, Japan
| | - M Shimoda
- From the Department of Neurosurgery (S.O., M.S., A.H., M.I., F.K., H.S., J.N.), Tokai University Hachioji Hospital, Tokyo, Japan
| | - A Hirayama
- From the Department of Neurosurgery (S.O., M.S., A.H., M.I., F.K., H.S., J.N.), Tokai University Hachioji Hospital, Tokyo, Japan
| | - M Imai
- From the Department of Neurosurgery (S.O., M.S., A.H., M.I., F.K., H.S., J.N.), Tokai University Hachioji Hospital, Tokyo, Japan
| | - F Komatsu
- From the Department of Neurosurgery (S.O., M.S., A.H., M.I., F.K., H.S., J.N.), Tokai University Hachioji Hospital, Tokyo, Japan
| | - H Shigematsu
- From the Department of Neurosurgery (S.O., M.S., A.H., M.I., F.K., H.S., J.N.), Tokai University Hachioji Hospital, Tokyo, Japan
| | - J Nishiyama
- From the Department of Neurosurgery (S.O., M.S., A.H., M.I., F.K., H.S., J.N.), Tokai University Hachioji Hospital, Tokyo, Japan
| | - M Matsumae
- Department of Neurosurgery (M.M.), Tokai University School of Medicine, Kanagawa, Japan
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Goh SK, Tompsett DA, Saines PJ, Chang HC, Matsumoto T, Imai M, Yoshimura K, Grosche FM. Ambient pressure structural quantum critical point in the phase diagram of (Ca(x)Sr(1-x))(3)Rh(4)Sn(13). Phys Rev Lett 2015; 114:097002. [PMID: 25793843 DOI: 10.1103/physrevlett.114.097002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Indexed: 06/04/2023]
Abstract
The quasiskutterudite superconductor Sr_{3}Rh_{4}Sn_{13} features a pronounced anomaly in electrical resistivity at T^{*}∼138 K. We show that the anomaly is caused by a second-order structural transition, which can be tuned to 0 K by applying physical pressure and chemical pressure via the substitution of Ca for Sr. A broad superconducting dome is centered around the structural quantum critical point. Detailed analysis of the tuning parameter dependence of T^{*} as well as insights from lattice dynamics calculations strongly support the existence of a structural quantum critical point at ambient pressure when the fraction of Ca is 0.9 (i.e., x_{c}=0.9). This establishes the (Ca_{x}Sr_{1-x})_{3}Rh_{4}Sn_{13} series as an important system for exploring the physics of structural quantum criticality without the need of applying high pressures.
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Affiliation(s)
- S K Goh
- Department of Physics, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
- Cavendish Laboratory, University of Cambridge, J. J. Thomson Avenue, Cambridge CB3 0HE, United Kingdom
| | - D A Tompsett
- Department of Chemistry, Imperial College London, South Kensington SW7 2AZ, United Kingdom
| | - P J Saines
- Department of Chemistry, University of Oxford, Inorganic Chemistry Laboratory, South Parks Road, Oxford OX1 3QR, United Kingdom
| | - H C Chang
- Cavendish Laboratory, University of Cambridge, J. J. Thomson Avenue, Cambridge CB3 0HE, United Kingdom
| | - T Matsumoto
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - M Imai
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - K Yoshimura
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - F M Grosche
- Cavendish Laboratory, University of Cambridge, J. J. Thomson Avenue, Cambridge CB3 0HE, United Kingdom
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Abstract
Influenza A viruses cause yearly epidemics and occasional pandemics. In addition, zoonotic influenza A viruses sporadically infect humans and may cause severe respiratory disease and fatalities. Fortunately, most of these viruses do not have the ability to be efficiently spread among humans via aerosols or respiratory droplets (airborne transmission) and to subsequently cause a pandemic. However, adaptation of these zoonotic viruses to humans by mutation or reassortment with human influenza A viruses may result in airborne transmissible viruses with pandemic potential. Although our knowledge of factors that affect mammalian adaptation and transmissibility of influenza viruses is still limited, we are beginning to understand some of the biological traits that drive airborne transmission of influenza viruses among mammals. Increased understanding of the determinants and mechanisms of airborne transmission may aid in assessing the risks posed by avian influenza viruses to human health, and preparedness for such risks. This chapter summarizes recent discoveries on the genetic and phenotypic traits required for avian influenza viruses to become airborne transmissible between mammals.
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Affiliation(s)
- S Herfst
- Department of Viroscience, Postgraduate School Molecular Medicine, Erasmus Medical Center, P.O. Box 2040, 3000 CA, Rotterdam, The Netherlands
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Sei Y, Mizuno M, Imai M, Suzuki Y, Higashide K, Okada N, Harris C, Matsuo S, Ito Y. Expression of membrane complement regulators in patients on peritoneal dialysis therapy. Mol Immunol 2013. [DOI: 10.1016/j.molimm.2013.05.110] [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: 11/30/2022]
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34
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Murakami Y, Masuda T, Imai M, Iwami J, Nakamura H, Noguchi T, Yoshimura F. Analysis of Major Virulence Factors inPorphyromonas gingivalisunder Various Culture Temperatures Using Specific Antibodies. Microbiol Immunol 2013; 48:561-9. [PMID: 15322335 DOI: 10.1111/j.1348-0421.2004.tb03552.x] [Citation(s) in RCA: 19] [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: 11/30/2022]
Abstract
Porphyromonas gingivalis is implicated in the occurrence of adult periodontitis. We have previously identified major outer membrane proteins from P. gingivalis, which include representative virulence factors such as gingipains, a 75 kDa major protein, RagA, RagB, and putative porin. Fimbriae, another important virulence factor, exist on the cell surface. In this study, we identified major supernatant proteins. They were fimbrilin, the 75 kDa major protein, gingipains and their adhesin domains. Microscopic examination showed that supernatant proteins formed vesicle-like and fimbrial structures. To learn more about the character of this bacterium, we examined effects of growth temperature on localization and expression of these virulence factors. In general, localization of major virulence factors did not change at the various growth temperatures used. Most of the 75 kDa major protein, RagA, RagB, and putative porin were found in the envelope fraction, not in cell-free culture supernatant. Gingipains were found in both the envelope fraction and supernatant. More than 80% of fimbriae were associated with cells, less than 20% migrated to the supernatant. Most fimbriae existed in the whole cell lysate, although there was a small amount in the envelope fraction. When the growth temperature was increased, expression of fimbriae, gingipains, the 75 kDa major protein, RagA, and RagB decreased. However, temperature had almost no effect on expression of putative porin. The tendency for expression of major virulence factors to decrease at higher temperatures may enable P. gingivalis to survive under hostile conditions.
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Affiliation(s)
- Yukitaka Murakami
- Department of Microbiology, School of Dentistry, Aichi-Gakuin University, 1-100 Kusumoto-cho, Chikusa-ku, Nagoya, Aichi 464-8650, Japan.
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Higami H, Shiomi H, Tazaki J, Imai M, Saito N, Kimura T. Five-year outcomes and late adverse events after sirolimus-eluting stent implantation for unprotected left main coronary artery disease. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p5529] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Imai M, Kimura TK. Characteristics of angiographic Peri-Stent contrast Staining (PSS) on very late stent thrombosis after sirolimus-eluting stent implantation: morphological classification and antiplatelet therapy. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p4811] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Vass A, Süveges G, Érces D, Nógrády M, Varga G, Földesi I, Futakuchi M, Imai M, Okada N, Okada H, Boros M, Kaszaki J. Inflammatory activation after experimental cardiac tamponade. Eur Surg Res 2013; 51:1-13. [PMID: 23859935 DOI: 10.1159/000352089] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Accepted: 05/14/2013] [Indexed: 11/19/2022]
Abstract
BACKGROUND/PURPOSE Cardiac tamponade is a medical emergency situation associated with a high rate of life-threatening complications, even after immediate interventions. Our aim was to characterize the acute inflammatory consequences of this event in a clinically relevant large animal model. METHODS Cardiac tamponade was induced for 60 min in anesthetized, ventilated and thoracotomized minipigs by intrapericardial fluid administration, the mean arterial pressure (MAP) being maintained in the interval of 40-45 mm Hg (n = 8). A further group (n = 7) served as sham-operated control. The global macrohemodynamics, including the right- and left-heart end-diastolic volumes (RHEDV and LHEDV), the pulmonary vascular resistance index (PVRI) and the superior mesenteric artery (SMA) flow, were monitored for 240 min, and the intestinal microcirculatory changes (pCO2 gap) were evaluated by indirect tonometry. Blood samples were taken for the determination of cardiac troponin T and vasoactive inflammatory mediators, including histamine, nitrite/nitrate, big-endothelin, superoxide and high-mobility group box protein-1 levels in association with intestinal leukocyte and complement activation. RESULTS The cardiac tamponade induced significant decreases in MAP, cardiac output, LHEDV and SMA flow, while the PVRI and the pCO2 gap increased significantly. After the removal of fluid from the pericardial sac, the MAP and the LHEDV were decreased, while the PVRI and the pCO2 gap remained elevated when compared with those in the sham-operated group. In the posttamponade period, the abrupt release of inflammatory mediators was accompanied by a significant splanchnic leukocyte accumulation and complement activation. CONCLUSIONS The macrocirculatory and splanchnic microcirculatory disturbances were accompanied by a significant proinflammatory reaction; endothelin and the complement system may be significant components of the inflammatory cascade that is activated in this porcine model of pericardial tamponade.
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Affiliation(s)
- A Vass
- Institute of Surgical Research, University of Szeged, Szeged, Hungary
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Imai M, Iriki Y, Itoh A. Target Dependence of Single-Electron-Capture Cross Sections for Slow Be, B, C, Fe, Ni, and W Ions Colliding with Atomic and Molecular Targets. Fusion Science and Technology 2013. [DOI: 10.13182/fst13-a16447] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- M. Imai
- Kyoto University, Department of Nuclear Engineering, Sakyo, Kyoto 606-8501, Japan
| | - Y. Iriki
- Kyoto University, Department of Nuclear Engineering, Sakyo, Kyoto 606-8501, Japan
| | - A. Itoh
- Kyoto University, Quantum Science and Engineering Center, Uji, Kyoto 611-0011, Japan
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Komiya T, Sato K, Shioya H, Inagaki Y, Hagiya H, Kozaki R, Imai M, Takada Y, Maeda T, Kurata H, Kurono M, Suzuki R, Otsuki K, Habashita H, Nakade S. Efficacy and immunomodulatory actions of ONO-4641, a novel selective agonist for sphingosine 1-phosphate receptors 1 and 5, in preclinical models of multiple sclerosis. Clin Exp Immunol 2013. [PMID: 23199323 DOI: 10.1111/j.1365-2249.2012.04669.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
ONO-4641 is a next-generation sphingosine 1-phosphate (S1P) receptor agonist selective for S1P receptors 1 and 5. The objective of the study was to characterize the immunomodulatory effects of ONO-4641 using preclinical data. ONO-4641 was tested in both in-vitro pharmacological studies as well as in-vivo models of transient or relapsing-remitting experimental autoimmune encephalomyelitis (EAE). In vitro, ONO-4641 showed highly potent agonistic activities versus S1P receptors 1 and 5 [half maximal effective concentration (EC(50) ) values of 0·0273 and 0·334 nM, respectively], and had profound S1P receptor 1 down-regulating effects on the cell membrane. ONO-4641 decreased peripheral blood lymphocyte counts in rats by inhibiting lymphocyte egress from secondary lymphoid tissues. In a rat experimental autoimmune encephalomyelitis (EAE) model, ONO-4641 suppressed the onset of disease and inhibited lymphocyte infiltration into the spinal cord in a dose-dependent manner at doses of 0·03 and 0·1 mg/kg. Furthermore, ONO-4641 prevented relapse of disease in a non-obese diabetic mouse model of relapsing-remitting EAE. These observations suggest that ONO-4641 may provide therapeutic benefits in the treatment of multiple sclerosis.
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Affiliation(s)
- T Komiya
- Exploratory Research Laboratories, Tsukuba, Ibaraki, Japan.
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Katakami N, Atagi S, Yoshioka H, Fukuoka M, Ogiwara A, Imai M, Ueda M, Matsui S. Nested Case Control Study of Proteomic Biomarkers for Interstitial Lung Disease in Japanese Patients With Non-Small Cell Lung Cancer Treated With Erlotinib. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)32800-3] [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: 10/25/2022] Open
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Pehkonen H, Lepikhova T, Louhimo R, Peitsaro N, Imai M, Martinez R, Klefström J, Hautaniemi S, Monni O. 380 Functional Properties of PPFIA1, Located at the 11q13 Amplification Region, in Epithelial Cancer Cells. Eur J Cancer 2012. [DOI: 10.1016/s0959-8049(12)71065-1] [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: 10/28/2022]
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Kashima K, Imai M. Impact Factors to Regulate Mass Transfer Characteristics of Stable Alginate Membrane Performed Superior Sensitivity on Various Organic Chemicals. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.proeng.2012.07.490] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Sakuma Y, Urakami N, Taniguchi T, Imai M. Asymmetric distribution of cone-shaped lipids in a highly curved bilayer revealed by a small angle neutron scattering technique. J Phys Condens Matter 2011; 23:284104. [PMID: 21709321 DOI: 10.1088/0953-8984/23/28/284104] [Citation(s) in RCA: 7] [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] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We have investigated the lipid sorting in a binary small unilamellar vesicle (SUV) composed of cone-shaped (1,2-dihexanoyl-sn-glycero-3-phosphocholine: DHPC) and cylinder-shaped (1,2-dipalmitoyl-sn-glycero-3-phosphocholine: DPPC) lipids. In order to reveal the lipid sorting we adopted a contrast matching technique of small angle neutron scattering (SANS), which extracts the distribution of deuterated lipids in the bilayer quantitatively without steric modification of lipids as in fluorescence probe techniques. First the SANS profile of protonated SUVs at a film contrast condition showed that SUVs have a spherical shape with an inner radius of 190 Å and a bilayer thickness of 40 Å. The SANS profile of deuterated SUVs at a contrast matching condition showed a characteristic scattering profile, indicating an asymmetric distribution of cone-shaped lipids in the bilayer. The characteristic profile was described well by a spherical bilayer model. The fitting revealed that most DHPC molecules are localized in the outer leaflet. Thus the shape of the lipid is strongly coupled with the membrane curvature. We compared the obtained asymmetric distribution of the cone-shaped lipids in the bilayer with the theoretical prediction based on the curvature energy model.
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Affiliation(s)
- Y Sakuma
- Department of Physics, Ochanomizu University, Bunkyo, Tokyo, Japan
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Kimata M, Terashima T, Kurita N, Satsukawa H, Harada A, Kodama K, Sato A, Imai M, Kihou K, Lee CH, Kito H, Eisaki H, Iyo A, Saito T, Fukazawa H, Kohori Y, Harima H, Uji S. Quasi-two-dimensional Fermi surfaces and coherent interlayer transport in KFe₂As₂. Phys Rev Lett 2010; 105:246403. [PMID: 21231539 DOI: 10.1103/physrevlett.105.246403] [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] [Received: 06/02/2010] [Indexed: 05/30/2023]
Abstract
We report the results of the angular-dependent magnetoresistance oscillations (AMROs), which can determine the shape of bulk Fermi surfaces (FSs) in quasi-two-dimensional (Q2D) systems, in a highly hole-doped Fe-based superconductor KFe2As2 with Tc ≈ 3.7 K. From the AMROs, we determined the two Q2D FSs with rounded-square cross sections, correspond to 12% and 17% of the first Brillouin zone. The rounded-squared shape of the FS cross section is also confirmed by the analyses of the interlayer transport under in-plane fields. From the obtained FS shape, we infer the character of the 3d orbitals that contribute to the FSs.
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Affiliation(s)
- M Kimata
- National Institute for Materials Science, Tsukuba, Ibaraki 305-0003, Japan
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Anyiwo CE, Imai M, Igo JD, Ogunbanjo B, Iwamoto A, Babona DV. Genotyping of human immunodefiency virus isolates in Papua New Guinea. Nig Q J Hosp Med 2010; 20:181-185. [PMID: 21913525] [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: 05/31/2023]
Abstract
BACKGROUND There has been considerable escalation in the incidence of HIV infection in Papua New Guinea since the first cases have been reported in 1987. OBJECTIVES The study was to identify the genetic subtype in HIV infected patients in Papua New Guinea. It is believed that the result will not only assist in tracing and tracking the sources of the infection, but will also help to evaluate the impact of the genotypes on the natural history of HIV in Papua New Guinea. METHODS Plasma samples from eighty patients were definitively tested for HIV antibodies at PNG Central Public Health Laboratory using Welcome ELISA, Serodia, Immuno Comb and Hexagon. The samples were also tested for Hepatitis B (HBsAG and HBcAG) and Hepatitis C virus antibodies. The HIV positive samples were reconfirmed by the Western Blot analysis; RNA isolation and reverse transcription. DNA sequencing and phylogenetic analysis and determination of HIV subtypes were determined by using representative sequences A-H, J, N and 0 in the Los Alamos Database. RESULTS The total number of HIV-1 positive patients' samples was 20 (5 females and 15 males) Out of this, 11 (all males) were successfully subtyped as c (91%) and b (9%) showing the predominant type to be subtype C. Nine isolates were designated not typable. This is attributable to either low viral load or new emerging strains that could not be detected by the database used in phylogenetic analysis. CONCLUSION Data predicts that there is possible emergence of BC circulating recombinant form (CRF) because we also identified subtype B. We suggest that as subtype C remains a guide for tracking the sources of infection in PNG that both subtypes C and B (and any other subtypes that may be identified in future) be included in the future vaccine for use in Papua New Guinea since some potential vaccines work only against particular subtypes assuming that nearly all subtypes identified so far are responsive to ant-retroviral drugs.
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Affiliation(s)
- C E Anyiwo
- Division of Pathology, School of Medicine and Health Sciences, University of Papua New Guinea
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Ito M, Miyado K, Nakagawa K, Muraki M, Imai M, Yamakawa N, Qin J, Hosoi Y, Saito H, Takahashi Y. Age-associated changes in the subcellular localization of phosphorylated p38 MAPK in human granulosa cells. Mol Hum Reprod 2010; 16:928-37. [DOI: 10.1093/molehr/gaq076] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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Ramachandran S, Komura S, Imai M, Seki K. Drag coefficient of a liquid domain in a two-dimensional membrane. Eur Phys J E Soft Matter 2010; 31:303-310. [PMID: 20306216 DOI: 10.1140/epje/i2010-10577-3] [Citation(s) in RCA: 7] [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] [Subscribe] [Scholar Register] [Received: 11/08/2009] [Revised: 01/28/2010] [Accepted: 02/19/2010] [Indexed: 05/29/2023]
Abstract
Using a hydrodynamic theory that incorporates a momentum decay mechanism, we calculate the drag coefficient of a circular liquid domain of finite viscosity moving in a two-dimensional membrane. We derive an analytical expression for the drag coefficient which covers the whole range of domain sizes. Several limiting expressions are discussed. The obtained drag coefficient decreases as the domain viscosity becomes smaller with respect to the outer membrane viscosity. This is because the flow induced in the domain acts to transport the fluid in the surrounding matrix more efficiently.
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Affiliation(s)
- S Ramachandran
- Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University, 192-0397, Tokyo, Japan
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Imai M. [Brief history of launching Clinical and Experimental Nephrology]. Nihon Jinzo Gakkai Shi 2010; 52:30-33. [PMID: 20166537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
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Tsuchiya K, Imai M, Yoshida M, Tateishi H, Nitatori T. CMR2009: 8.02: Perfusion CT of brain tumors can be performed with 25 ml of contrast material using 64-detector CT. Contrast Media Mol Imaging 2009. [DOI: 10.1002/cmmi.337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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