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Maekawa T, Kohno Y, Morishita S, Arakawa K. Development of a TEM Optical System for the Atomic-Resolution Magnetic-Field-Free Electron Microscope. Microsc Microanal 2023; 29:2071-2072. [PMID: 37612946 DOI: 10.1093/micmic/ozad067.1072] [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: 08/25/2023]
Affiliation(s)
| | - Y Kohno
- JEOL Ltd., Akishima, Tokyo, Japan
| | | | - K Arakawa
- Next Generation TATARA Co-Creation Centre (NEXTA), Shimane University, Matsue, Shimane, Japan
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Takahata K, Arakawa K, Enomoto S, Usami Y, Nogi K, Saitou R, Ozone K, Takahashi H, Yoneno M, Kokubun T. Joint instability causes catabolic enzyme production in chondrocytes prior to synovial cells in novel non-invasive ACL ruptured mouse model. Osteoarthritis Cartilage 2022; 31:576-587. [PMID: 36528308 DOI: 10.1016/j.joca.2022.12.004] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 11/07/2022] [Accepted: 12/07/2022] [Indexed: 12/23/2022]
Abstract
OBJECTIVE The Anterior Cruciate Ligament (ACL)-deficient model helps to clarify the mechanism of knee osteoarthritis (OA); however, the conventional ACL injury model could have included concurrent onset factors such as direct compression stress to cartilage and subchondral bone. In this study, we established a novel Non-invasive ACL-Ruptured mouse model without concurrent injuries and elucidated the relationship between OA progression and joint instability. DESIGN We induced the ACL-Rupture non-invasively in twelve-week-old C57BL/6 male mice and evaluated histological, macroscopical, and morphological analysis at 0 days. Next, we created the ACL-R, controlled abnormal tibial translation (CATT), and Sham groups. Then, the joint stability and OA pathophysiology were analyzed at 2, 4, and 8 weeks. RESULTS No intra-articular injuries, except for ACL rupture, were observed in the ACL-R model. ACL-R mice increased anterior tibial displacement compared to the Sham group (P < 0.001, 95% CI [-1.509 to -0.966]) and CATT group (P < 0.001, 95% CI [-0.841 to -0.298]) at 8 weeks. All mice in the ACL-R group caused cartilage degeneration. The degree of cartilage degeneration in the ACL-R group was higher than in the CATT group (P = 0.006) at 8 weeks. The MMP-3-positive cell rate of chondrocytes increased in the ACL-R group than CATT group from 4 weeks (P = 0.043; 95% CI [-28.32 to -0.364]) while that of synovial cells increased at 8 weeks (P = 0.031; 95% CI [-23.398 to -1.021]). CONCLUSION We successfully established a Non-invasive ACL-R model without intra-articular damage. Our model revealed that chondrocytes might react to abnormal mechanical stress prior to synovial cells while the knee OA onset.
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Affiliation(s)
- K Takahata
- Graduate School of Health, Medicine, and Welfare, Saitama Prefectural University, Saitama, Japan; Japan Society for the Promotion of Science, Tokyo, Japan.
| | - K Arakawa
- Graduate School of Health, Medicine, and Welfare, Saitama Prefectural University, Saitama, Japan.
| | - S Enomoto
- Graduate School of Health, Medicine, and Welfare, Saitama Prefectural University, Saitama, Japan.
| | - Y Usami
- Graduate School of Health, Medicine, and Welfare, Saitama Prefectural University, Saitama, Japan.
| | - K Nogi
- Graduate School of Health, Medicine, and Welfare, Saitama Prefectural University, Saitama, Japan.
| | - R Saitou
- Graduate School of Health, Medicine, and Welfare, Saitama Prefectural University, Saitama, Japan.
| | - K Ozone
- University of Tsukuba Hospital, Ibaraki, Japan.
| | - H Takahashi
- Graduate School of Health, Medicine, and Welfare, Saitama Prefectural University, Saitama, Japan.
| | - M Yoneno
- Graduate School of Health, Medicine, and Welfare, Saitama Prefectural University, Saitama, Japan.
| | - T Kokubun
- Graduate School of Health, Medicine, and Welfare, Saitama Prefectural University, Saitama, Japan; Department of Physical Therapy, School of Health and Social Services, Saitama Prefectural University, Saitama, Japan.
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Arakawa K, Takahata K, Enomoto S, Oka Y, Ozone K, Nakagaki S, Murata K, Kanemura N, Kokubun T. The difference in joint instability affects the onset of cartilage degeneration or subchondral bone changes. Osteoarthritis Cartilage 2022; 30:451-460. [PMID: 34906679 DOI: 10.1016/j.joca.2021.12.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 12/07/2021] [Accepted: 12/08/2021] [Indexed: 02/02/2023]
Abstract
OBJECTIVE It has been debated whether the onset of knee osteoarthritis is initiated in cartilage or subchondral bone. The purpose of this study was to clarify the effects of increasing or decreasing joint instability on cartilage degeneration and subchondral bone changes in knee OA by comparing different models of joint instability. DESIGN We used the anterior cruciate ligament transection (ACL-T) model and the destabilization of the medial meniscus (DMM) model. In addition, we created a controlled abnormal tibial translation (CATT) model and a controlled abnormal tibial rotation (CATR) model. We performed joint instability analysis, micro-computed tomography analysis, histological and immunohistological analysis in 4 and 6 weeks. RESULTS The CATT group suppressed joint instability in the ACL-T group (6 weeks; P = 0.032), and the CATR group suppressed joint instability in the DMM group (6 weeks; P = 0.032). Chondrocyte hypertrophy in the ACL-T and DMM groups was increased compared to the Sham group (6 weeks; [ACL-T vs Sham], P = 0.002, 95%CI [5.983-33.025]; [DMM vs Sham], P = 0.022, 95%CI [1.691-28.733]). In the subchondral bone, the BV/TV in the DMM and CATR groups was increased compared to the ACL-T and CATT groups (6 weeks; [DMM vs ACL-T], P = 0.002, 95%CI [7.404-37.582]; [DMM vs CATT], P = 0.014, 95%CI [2.881-33.059]; [CATR vs ACL-T], P = 0.006, 95%CI [4.615-34.793]; [CATR vs CATT], P = 0.048, 95%CI [0.092-30.270]). CONCLUSIONS This study showed that joint instability promotes chondrocyte hypertrophy, but subchondral bone changes were influenced by differences in ACL and meniscus function.
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Affiliation(s)
- K Arakawa
- Department of Health and Social Services, Health and Social Services, Graduate School of Saitama Prefectural University, Saitama, Japan.
| | - K Takahata
- Department of Health and Social Services, Health and Social Services, Graduate School of Saitama Prefectural University, Saitama, Japan.
| | - S Enomoto
- Department of Physical Therapy, Health and Social Services, Saitama Prefectural University, Saitama, Japan.
| | - Y Oka
- Department of Health and Social Services, Health and Social Services, Graduate School of Saitama Prefectural University, Saitama, Japan.
| | - K Ozone
- Department of Health and Social Services, Health and Social Services, Graduate School of Saitama Prefectural University, Saitama, Japan; Japan Society for the Promotion of Science, Tokyo, Japan.
| | - S Nakagaki
- Department of Health and Social Services, Health and Social Services, Graduate School of Saitama Prefectural University, Saitama, Japan.
| | - K Murata
- Department of Health and Social Services, Health and Social Services, Graduate School of Saitama Prefectural University, Saitama, Japan; Department of Physical Therapy, Health and Social Services, Saitama Prefectural University, Saitama, Japan.
| | - N Kanemura
- Department of Health and Social Services, Health and Social Services, Graduate School of Saitama Prefectural University, Saitama, Japan; Department of Physical Therapy, Health and Social Services, Saitama Prefectural University, Saitama, Japan.
| | - T Kokubun
- Department of Health and Social Services, Health and Social Services, Graduate School of Saitama Prefectural University, Saitama, Japan; Department of Physical Therapy, Health and Social Services, Saitama Prefectural University, Saitama, Japan.
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Akatsu H, Kawade Y, Arakawa K, Masaki Y, Tanaka H, Kanematsu T, Hashizume Y, Tsuneyama K, Manabe T, Ohohara T, Maruyama M. MON-PO634: How Risky of Intravenous Iron Administration? (Analysis of Iron Deposition by 157 Pathological Liver Tissues). Clin Nutr 2019. [DOI: 10.1016/s0261-5614(19)32467-7] [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: 11/29/2022]
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Kino T, Ishigami T, Doi H, Chen L, Nakashima R, Sugiyama M, Arakawa K, Minegishi S, Sugano T, Ishikawa T, Tamura K. P6262A novel optimal medical therapy for preventing secondary cardiovascular events in subjects with coronary artery diseases in Japan. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6262] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- T Kino
- Yokohama City University, Graduate school of Medicine Department of Medical Science and Cardio-Renal Medicine., Yokohama, Japan
| | - T Ishigami
- Yokohama City University, Graduate school of Medicine Department of Medical Science and Cardio-Renal Medicine., Yokohama, Japan
| | - H Doi
- Yokohama City University, Graduate school of Medicine Department of Medical Science and Cardio-Renal Medicine., Yokohama, Japan
| | - L Chen
- Yokohama City University, Graduate school of Medicine Department of Medical Science and Cardio-Renal Medicine., Yokohama, Japan
| | - R Nakashima
- Yokohama City University, Graduate school of Medicine Department of Medical Science and Cardio-Renal Medicine., Yokohama, Japan
| | - M Sugiyama
- Yokohama City University, Graduate school of Medicine Department of Medical Science and Cardio-Renal Medicine., Yokohama, Japan
| | - K Arakawa
- Yokohama City University, Graduate school of Medicine Department of Medical Science and Cardio-Renal Medicine., Yokohama, Japan
| | - S Minegishi
- Kanagawa Cardiovascular and Respiratory Center, Department of Cardiology, Yokohama, Japan
| | - T Sugano
- Yokohama City University, Graduate school of Medicine Department of Medical Science and Cardio-Renal Medicine., Yokohama, Japan
| | - T Ishikawa
- Yokohama City University, Graduate school of Medicine Department of Medical Science and Cardio-Renal Medicine., Yokohama, Japan
| | - K Tamura
- Yokohama City University, Graduate school of Medicine Department of Medical Science and Cardio-Renal Medicine., Yokohama, Japan
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Arakawa K, Kawai K, Tanaka T, Hata K, Sugihara K, Nozawa H. Prognostic impact of interhospital variation in adjuvant chemotherapy for patients with Stage II/III colorectal cancer: a nationwide study. Colorectal Dis 2018; 20:O162-O172. [PMID: 29752849 DOI: 10.1111/codi.14260] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Accepted: 04/16/2018] [Indexed: 12/22/2022]
Abstract
AIM Clinical guidelines recommend adjuvant chemotherapy for high-risk patients with Stage II-III colorectal cancer. However, chemotherapeutic administration rates differ significantly between hospitals. We assessed the prognostic benefit of adjuvant chemotherapy in patients with Stage IIb/c colorectal cancer, and the prognostic impact of interhospital variations in the administration of adjuvant chemotherapy for Stage II-III colorectal cancer. METHOD We conducted a multicentre, retrospective study of 17 757 patients with Stage II-III colorectal cancer treated between 1997 and 2008 in 23 hospitals in Japan. Hospitals were classified as high-rate (rate > 42.8%) or low-rate (rate ≤ 42.8%), chemotherapy prescribing clinics. RESULTS The 5-year overall survival (OS) of patients with Stage II-III colorectal cancer receiving adjuvant chemotherapy was significantly higher than for those not receiving adjuvant chemotherapy (85.7% vs 79.2%, P < 0.01 and 79.9% vs 72.5%, P < 0.01, respectively). For patients with Stage II disease, adjuvant chemotherapy was an independent factor for longer OS (P < 0.01, hazard ratio = 0.71). Both adjuvant chemotherapy and high-rate hospital independently improved OS for patients with Stage III colorectal cancer (both P < 0.01; hazard ratio = 0.68 and 0.87, respectively). CONCLUSION Significant prognostic benefit was found for patients with Stage IIb/c colorectal cancer who received adjuvant chemotherapy, with patients who were treated in hospitals with high adjuvant chemotherapy rates demonstrating better prognoses.
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Affiliation(s)
- K Arakawa
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
| | - K Kawai
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
| | - T Tanaka
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
| | - K Hata
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
| | - K Sugihara
- Department of Surgical Oncology, Tokyo Medical and Dental University, Tokyo, Japan
| | - H Nozawa
- Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan
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Asadi A, Abusrea MR, Arakawa K, Colton J, Kalaitzidou K. A comparison of CFRP composite laminated joints fabricated with vacuum assisted resin transfer molding. EXPRESS POLYM LETT 2018. [DOI: 10.3144/expresspolymlett.2018.67] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Akatsu H, Arai S, Tanaka T, Kamiya A, Arakawa K, Masaki Y, Tanaka H, Kanematsu T, Ohara H, Inoue K, Xia JZ, Maruyama M. SUN-P301: Investigation on the Effect of Aminolevulinic Acid on Intestinal Environment of Aging Mice. Clin Nutr 2017. [DOI: 10.1016/s0261-5614(17)30330-8] [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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Amino T, Arakawa K, Mori H. Detection of one-dimensional migration of single self-interstitial atoms in tungsten using high-voltage electron microscopy. Sci Rep 2016; 6:26099. [PMID: 27185352 PMCID: PMC4869112 DOI: 10.1038/srep26099] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Accepted: 04/21/2016] [Indexed: 11/17/2022] Open
Abstract
The dynamic behaviour of atomic-size disarrangements of atoms—point defects (self-interstitial atoms (SIAs) and vacancies)—often governs the macroscopic properties of crystalline materials. However, the dynamics of SIAs have not been fully uncovered because of their rapid migration. Using a combination of high-voltage transmission electron microscopy and exhaustive kinetic Monte Carlo simulations, we determine the dynamics of the rapidly migrating SIAs from the formation process of the nanoscale SIA clusters in tungsten as a typical body-centred cubic (BCC) structure metal under the constant-rate production of both types of point defects with high-energy electron irradiation, which must reflect the dynamics of individual SIAs. We reveal that the migration dimension of SIAs is not three-dimensional (3D) but one-dimensional (1D). This result overturns the long-standing and well-accepted view of SIAs in BCC metals and supports recent results obtained by ab-initio simulations. The SIA dynamics clarified here will be one of the key factors to accurately predict the lifetimes of nuclear fission and fusion materials.
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Affiliation(s)
- T Amino
- Advanced Technology Research Laboratories, Nippon Steel &Sumitomo Metal Corporation, 1-8 Fuso-Cho, Amagasaki, Hyogo 660-0891, Japan
| | - K Arakawa
- Department of Materials Science, Faculty of Science and Engineering, Shimane University, 1060 Nishikawatsu, Matsue 690-8504, Japan
| | - H Mori
- Research Centre for Ultra-High Voltage Electron Microscopy, Osaka University, 7-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
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Furukawa M, Kina S, Shiroma M, Shiroma Y, Masuda N, Motomura D, Hiraoka H, Fujioka S, Kawakami T, Yasuda Y, Arakawa K, Fukahori K, Jyunicho M, Ishikawa S, Ohomoto T, Shingaki R, Akata N, Zhuo W, Tokonami S. Terrestrial gamma radiation dose rate in Ryukyu Islands, subtropical region of Japan. Radiat Prot Dosimetry 2015; 167:223-227. [PMID: 26065703 DOI: 10.1093/rpd/ncv249] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In order to explain the distribution of natural radiation level in the Asia, in situ measurements of dose rate in air due to terrestrial gamma radiation have been conducted in a total of 21 islands that belong to Ryukyu Islands (Ryukyu Archipelago), subtropical rejoin of southwest Japan. Car-borne surveys have also been carried out in Okinawa-jima, the biggest island of the archipelago. Based on the results for these measurements, arithmetic mean, the maximum and the minimum of the dose rates at 1 m in height from the unpaved soil ground in the archipelago were estimated to be 47, 165 and 8 nGy h(-1), respectively. A comparative study of car-borne data obtained prior to and subsequent to the 2011 Fukushima nuclear accident, as for Okinawa-jima, indicated that the nuclear accident has no impact on the environmental radiation at the present time.
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Affiliation(s)
- M Furukawa
- Faculty of Science, University of the Ryukyus, 1 Senbaru, Nishihara-cho, Okinawa 903-0213, Japan
| | - S Kina
- Graduate School of Engineering and Sciences, University of the Ryukyus, 1 Senbaru, Nishihara-cho, Okinawa 903-0213, Japan
| | - M Shiroma
- Faculty of Science, University of the Ryukyus, 1 Senbaru, Nishihara-cho, Okinawa 903-0213, Japan
| | - Y Shiroma
- Graduate School of Engineering and Sciences, University of the Ryukyus, 1 Senbaru, Nishihara-cho, Okinawa 903-0213, Japan
| | - N Masuda
- Graduate School of Engineering and Sciences, University of the Ryukyus, 1 Senbaru, Nishihara-cho, Okinawa 903-0213, Japan
| | - D Motomura
- Faculty of Science, University of the Ryukyus, 1 Senbaru, Nishihara-cho, Okinawa 903-0213, Japan
| | - H Hiraoka
- Graduate School of Engineering and Sciences, University of the Ryukyus, 1 Senbaru, Nishihara-cho, Okinawa 903-0213, Japan
| | - S Fujioka
- Faculty of Science, University of the Ryukyus, 1 Senbaru, Nishihara-cho, Okinawa 903-0213, Japan
| | - T Kawakami
- Faculty of Science, University of the Ryukyus, 1 Senbaru, Nishihara-cho, Okinawa 903-0213, Japan
| | - Y Yasuda
- Faculty of Science, University of the Ryukyus, 1 Senbaru, Nishihara-cho, Okinawa 903-0213, Japan
| | - K Arakawa
- Faculty of Science, University of the Ryukyus, 1 Senbaru, Nishihara-cho, Okinawa 903-0213, Japan
| | - K Fukahori
- Faculty of Science, University of the Ryukyus, 1 Senbaru, Nishihara-cho, Okinawa 903-0213, Japan
| | - M Jyunicho
- Faculty of Science, University of the Ryukyus, 1 Senbaru, Nishihara-cho, Okinawa 903-0213, Japan
| | - S Ishikawa
- Faculty of Science, University of the Ryukyus, 1 Senbaru, Nishihara-cho, Okinawa 903-0213, Japan
| | - T Ohomoto
- Faculty of Science, University of the Ryukyus, 1 Senbaru, Nishihara-cho, Okinawa 903-0213, Japan
| | - R Shingaki
- Graduate School of Engineering and Sciences, University of the Ryukyus, 1 Senbaru, Nishihara-cho, Okinawa 903-0213, Japan
| | - N Akata
- National Institute for Fusion Science, 322-6 Oroshi-cho, Toki-shi, Gifu 509-5292, Japan
| | - W Zhuo
- Institute of Radiation Medicine, Fudan University, No. 2094, Xietu Road, Shanghai 200032, China
| | - S Tokonami
- Institute of Radiation Emergency Medicine, Hirosaki University, 66-1 Hon-cho, Hirosaki-shi, Aomori 036-8564, Japan
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Hiroki T, Kanaya H, Doi Y, Arakawa K. U vectorcardiograms in left ventricular overloading. Adv Cardiol 2015; 21:214-9. [PMID: 145792 DOI: 10.1159/000400452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Arakawa K, Matsunaga K, Takihiro S, Moritoki A, Ryuto S, Kawai Y, Masuda T, Miyamoto T. Lactobacillus gasseri requires peptides, not proteins or free amino acids, for growth in milk. J Dairy Sci 2014; 98:1593-603. [PMID: 25529420 DOI: 10.3168/jds.2014-8860] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Accepted: 11/02/2014] [Indexed: 11/19/2022]
Abstract
Lactobacillus gasseri is a widespread commensal lactic acid bacterium inhabiting human mucosal niches and has many beneficial effects as a probiotic. However, L. gasseri is difficult to grow in milk, which hurts usability for the food industry. It had been previously reported that supplementation with yeast extract or proteose peptone, including peptides, enables L. gasseri to grow well in milk. In this study, our objective was to confirm peptide requirement of L. gasseri and evaluate efficacy of peptide release by enzymatic proteolysis on growth of L. gassei in milk. Three strains of L. gasseri did not grow well in modified DeMan, Rogosa, Sharpe broth without any nitrogen sources (MRS-N), but addition of a casein-derived peptide mixture, tryptone, promoted growth. In contrast, little effect was observed after adding casein or a casein-derived amino acid mixture, casamino acids. These results indicate that L. gasseri requires peptides, not proteins or free amino acids, among milk-derived nitrogen sources for growth. Lactobacillus gasseri JCM 1131T hardly had growth capacity in 6 kinds of milk-based media: bovine milk, human milk, skim milk, cheese whey, modified MRS-N (MRSL-N) supplemented with acid whey, and MRSL-N supplemented with casein. Moreover, treatment with digestive proteases, particularly pepsin, to release peptides made it grow well in each milk-based medium. The pepsin treatment was the most effective for growth of strain JCM 1131T in skim milk among the tested food-grade proteases such as trypsin, α-chymotrypsin, calf rennet, ficin, bromelain, and papain. As well as strain JCM 1131T, pepsinolysis of milk improved growth of other L. gasseri strains and some strains of enteric lactobacilli such as Lactobacillus crispatus, Lactobacillus gallinarum, Lactobacillus johnsonii, and Lactobacillus reuteri. These results suggest that some relatives of L. gasseri also use peptides as desirable nitrogen sources, and that milk may be a good supplier of nutritious peptides to enteric lactobacilli including L. gasseri after peptic digestion in the gastrointestinal tract. This is the first report showing peptide requirement of L. gasseri and efficacy of pepsinolysis on the growth of L. gasseri and its relatives in milk. This study would contribute to increasing usability of L. gasseri and its relatives as probiotics in dairy foods.
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Affiliation(s)
- K Arakawa
- Graduate School of Environmental and Life Science, Okayama University, Okayama 7008530, Japan
| | - K Matsunaga
- Graduate School of Environmental and Life Science, Okayama University, Okayama 7008530, Japan
| | - S Takihiro
- Graduate School of Environmental and Life Science, Okayama University, Okayama 7008530, Japan
| | - A Moritoki
- Graduate School of Environmental and Life Science, Okayama University, Okayama 7008530, Japan
| | - S Ryuto
- Graduate School of Environmental and Life Science, Okayama University, Okayama 7008530, Japan
| | - Y Kawai
- Graduate School of Bioresource Sciences, Nihon University, Kanagawa 2520880, Japan
| | - T Masuda
- Graduate School of Bioresource Sciences, Nihon University, Kanagawa 2520880, Japan
| | - T Miyamoto
- Graduate School of Environmental and Life Science, Okayama University, Okayama 7008530, Japan.
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Arakawa K, Himeno H, Otomo F, Matsushita K, Nakahashi H, Shimizu S, Nitta M, Kimura K, Umemura S. N-3 polyunsaturated fatty acids as a predictor of ischemia/reperfusion injury immediately after myocardial reperfusion in patients with ST-segment elevation acute myocardial infarction. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p1299] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Ishida K, Koike M, Uzui H, Amaya N, Arakawa K, Kaseno K, Morishita T, Okazawa H, Lee JD, Tada H. Beneficial early effects of statin treatment on coronary microvascular dysfunction and left ventricular remodeling in patients with acute anterior myocardial infarctions. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p2225] [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: 11/15/2022] Open
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Hisazaki K, Uzui H, Arakawa K, Amaya N, Kaseno K, Ishida K, Morishita T, Sato T, Lee JD, Tada H. Correlation between serum matrix metalloproteinase-2/tissue inhibitors of metalloproteinase-2 ratio and elevated pulmonary vascular resistance. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht307.p289] [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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Kaira K, Sunose Y, Arakawa K, Sunaga N, Iwasaki Y, Mori M, Oyama T, Takeyoshi I. Prognostic Significance of L-Type Amino Acid Transporter 1 Expression in Completely Resected Pancreatic Cancer. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)32306-1] [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: 10/25/2022] Open
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Naing A, Fu S, Arakawa K, Zinner R, Wheler J, Falchook G, Hong D, Kurzrock R. TAS-106 in Combination with Carboplatin is Active in Patients with Refractory Non-Small Cell Lung Cancer And Ovarian Cancer. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)31974-8] [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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18
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Shimizu Y, Matsuzaki S, Satoh T, Ohkubo T, Yokoyama A, Ishii Y, Kamiya T, Arakawa K, Shimizu K, Tanaka S, Mori M, Dobashi K. Influence of tissue particles on Fas expression in idiopathic interstitial pneumonia. Front Biosci (Elite Ed) 2011; 3:65-73. [PMID: 21196285 DOI: 10.2741/e220] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [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: 05/30/2023]
Abstract
Idiopathic interstitial pneumonia (IIP) is a progressive fibrosing interstitial pneumonia of unknown etiology with a poor prognosis. The aim of this study is to prove the occurrence of particle deposition and particle-induced tissue damage in IIP by examining proapoptotic Fas expression with in-air microparticle induced X-ray emission (in-air micro-PIXE) analysis. A total of 21 patients were enrolled. Lung tissues from 12 IIP patients and nontumorous lung tissues from 9 lung cancer patients (as a control) were subjected to in-air micro-PIXE analysis. The distribution of particles in lung tissue was compared with the localization of Fas expression by immunohistochemistry. Silicon (Si) was identified in 58.3% of IIP samples and 44.4% of control samples. Iron (Fe) was identified 25% in IIP samples and 11.1% in control samples. The mean lung tissue content of Si and Fe relative to S did not differ between IIP and control patients. Only two IIP patients showed the co-localization of Si and Fe deposition with Fas expression. Adaptation of this method would contribute to assess the influence of particles on IIP.
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Affiliation(s)
- Yasuo Shimizu
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan.
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19
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Arakawa H, Arakawa K, Deak T. Oxytocin and vasopressin in the medial amygdala differentially modulate approach and avoidance behavior toward illness-related social odor. Neuroscience 2010; 171:1141-51. [DOI: 10.1016/j.neuroscience.2010.10.013] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2010] [Revised: 09/29/2010] [Accepted: 10/03/2010] [Indexed: 11/15/2022]
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20
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Chen CL, Arakawa K, Mori H. Two-dimensional metallic tungsten nanowire network fabricated by electron-beam-induced deposition. Nanotechnology 2010; 21:285304. [PMID: 20562484 DOI: 10.1088/0957-4484/21/28/285304] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
One-dimensional tungsten nanowires and two-dimensional tungsten nanowire networks were fabricated on a tungsten substrate by using electron-beam-induced deposition (EBID) without precursor injection. The as-prepared tungsten nanostructures were studied using a combination of energy-dispersive x-ray spectroscopy and selected area electron diffraction. It was revealed that the tungsten nanostructures were composed of pure metallic tungsten. The WO(3) oxide formed in the chemical preparation of tungsten foils was probably the source of tungsten for the fabrication of tungsten nanostructures by EBID.
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Affiliation(s)
- C L Chen
- Research Center for Ultra-High Voltage Electron Microscopy, Osaka University, Ibaraki, Osaka 567-0047, Japan.
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21
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Matsuzaki S, Shimizu Y, Dobashi K, Nagamine T, Satoh T, Ohkubo T, Yokoyama A, Ishii Y, Kamiya T, Arakawa K, Makino S, Utsugi M, Ishizuka T, Tanaka S, Shimizu K, Mori M. Analysis on the co-localization of asbestos bodies and Fas or CD163 expression in asbestos lung tissue by in-air micro-pixe. Int J Immunopathol Pharmacol 2010; 23:1-11. [PMID: 20377990 DOI: 10.1177/039463201002300101] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
To prevent and control disease caused by exposure to various agents, it is necessary to determine the harmful level of intervention and to establish a method for measuring that level. In-air microparticle-induced X-ray emission (in-air micro-PIXE) analysis is based on irradiation of specimens with a proton ion microbeam, and has been modified for biological application. Two-dimensional analysis and quantitative analysis using the system confirmed that asbestos induced apoptosis by upregulating Fas expression and also revealed the accumulation of CD163-expressing macrophages in the lungs of patients with asbestosis. By quantitative comparison of the area of Fas or CD163 expression and the Fas- or CD163-negative area in asbestos lung tissue, the harmful levels which caused the expression of Fas or CD163 could be estimated on Silica, Ferrous iron, and Magnesium (the components of asbestos) deposition. These results indicate that the system could be useful for investigating the pathogenesis of inhaled particle-induced immune reactions and for determining harmful levels of exogenous agents.
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Affiliation(s)
- S Matsuzaki
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, Gunma, Japan
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22
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Arakawa K, Kawai Y, Ito Y, Nakamura K, Chujo T, Nishimura J, Kitazawa H, Saito T. HPLC purification and re-evaluation of chemical identity of two circular bacteriocins, gassericin A and reutericin 6. Lett Appl Microbiol 2010; 50:406-11. [DOI: 10.1111/j.1472-765x.2010.02810.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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23
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Arakawa K, Kawai Y, Iioka H, Tanioka M, Nishimura J, Kitazawa H, Tsurumi K, Saito T. Effects of gassericins A and T, bacteriocins produced by Lactobacillus gasseri, with glycine on custard cream preservation. J Dairy Sci 2009; 92:2365-72. [DOI: 10.3168/jds.2008-1240] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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24
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Watanabe M, Yamamoto T, Arakawa K, Imai J, Sekiguchi R, Enatsu S, Nambu Y. Safety and effectiveness of malignant pleural mesothelioma patients treated with pemetrexed: A postmarketing drug registered study under performance linked access system. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.e19084] [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: 11/20/2022] Open
Abstract
e19084 Background: Approximately 1000 patients are newly diagnosed as malignant pleural mesothelioma (MPM) each year in Japan, however MPM patient profile and their outcome are not well understood. Pemetrexed is the only approved chemotherapeutic agent for MPM. Limited safety information was available at launch of pemetrexed in Japan where drug induced interstitial pneumonitis are reported at higher rate than the rest of the world. Therefore postmarketing drug registered study (PDRS) for pemetrexed was conducted in Japan to investigate patient characteristics, adverse events and survival of MPM patients based on a regulatory requirement for approval. Methods: From February 2007 to May 2008, all of histologically proven MPM patients to be treated with pemetrexed were required to register the PDRS in Japan. The observation period was six-months. Supply of pemetrexed was restricted to institutes with experienced medical oncologists based on pre-determined criteria. Results: During the 15-months enrollment period, 948 MPM patients were registered. Until August 3th 2008, data for 437 patients were collected. Among these, 389 were male, 48 female, median of age 65 (35–86). 72.3% patients had a known history of being exposed to asbestos. The treatment regimen mainly consists of 500 mg/m2 of pemetrexed and 75 mg/m2 of cisplatin every 21 days. Median treatment cycle was 3.0. Hematological NCI-CTC Grade ¾ adverse events in laboratory data were hemoglobin decrease 19.9 %, neutropenia 20.1%, thrombocytopenia 7.6%. Serious non-hematological adverse events were nausea 3%, vomiting 3.2%, fatigue 0.2%, constipation 0.2%, diarrhea 0.9%. Pneumotoxicity was found in 1.4%. 152 deaths (34.8%) were observed and six-month survival rate estimated by Kaplan-Meier method was 70.9%. Conclusions: This large size PDRS shows that safety profile of pemetrexed appeared similar to the previous clinical trial without additional safety signal. The study has minimum selection bias and provides useful information to health care professionals on safety and effectiveness of pemetrexed in real clinical setting in Japan. [Table: see text]
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Affiliation(s)
| | | | | | - J. Imai
- Eli Lilly Japan, Hygo, Japan
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25
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Kunihisa M, Ueda H, Fukino N, Matsumoto S, Akasaki T, Amagai M, Arakawa K, Asami I, Asao H, Chiba N, Hirano M, Ishikawa M, Kai H, Kitahara K, Koshikawa K, Maeda F, Nishikawa T, Niwa Y, Noda T, Nomura T, Nomura T, Numata S, Osaki M, Saegusa T, Shimizu K, Shimomura K, Takemoto K, Takeuchi Y, Tasaki K, Yamamoto Y, Yasuda M, Yoshimura Y. Genotyping of Strawberry (Fragaria ananassa Duch.) Cultivars by DNA Markers: Interlaboratory Study. J AOAC Int 2009. [DOI: 10.1093/jaoac/92.3.896] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Fourteen Japanese laboratories validated the reproducibility of genotyping by 25 cleavage amplified polymorphic sequence (CAPS) markers for discrimination of strawberry (Fragaria ananassa Duch.) cultivars. Both the sensitivity and specificity rate of 12 markers were 100, those of another 12 were >95, and those of 1 were >90. These results indicate that the method of genotyping by the CAPS markers was highly reproducible and could provide a useful basis for practical identification of strawberry cultivars. This is the first report of the statistical validation of crop genotyping by DNA markers.
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Affiliation(s)
- Miyuki Kunihisa
- National Institute of Vegetable and Tea Science, Kannondai 3-1-1, Tsukuba, Ibaraki 305-8666, Japan
| | - Hiroshi Ueda
- National Institute of Vegetable and Tea Science, Kusawa 360, Ano, Tsu, Mie 514-2392, Japan
| | - Nobuko Fukino
- National Institute of Vegetable and Tea Science, Kusawa 360, Ano, Tsu, Mie 514-2392, Japan
| | - Satoru Matsumoto
- National Institute of Vegetable and Tea Science, Kusawa 360, Ano, Tsu, Mie 514-2392, Japan
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26
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Takase B, Uehata A, Nishioka T, Arakawa K, Satomura K, Ohsuzu F, Kurita A. Effect of aprindine on heart rate variability indices in patients with ischemic heart disease. Clin Cardiol 2009; 22:107-12. [PMID: 10068848 PMCID: PMC6656236 DOI: 10.1002/clc.4960220210] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Decreased heart rate variability indices (HRV) are associated with untoward outcome of patients with ischemic heart disease (IHD). Most class I antiarrhythmic agents decrease HRV, but aprindine (a new class I antiarrhythmic agent) is reported to increase HRV in patients without ischemia. HYPOTHESIS The study was undertaken to determine whether apridine might increase HRV in patients with IHD. METHODS To investigate the effect of aprindine on HRV in patients with IHD, we performed 24-h ambulatory electrocardiogram (ECG) at the end of placebo and aprindine (60 mg daily) treatment phases on 38 patients with IHD and at least isolated premature ventricular contractions (PVC). The study protocol utilized a single blind, 4-week, placebo-controlled design. Heart rate variability from ambulatory ECG included SDNN (ms), SDANN (ms), SD (ms), rMSSD (ms), pNN50 (%); frequency analysis of HRV consisting of total (ms, 0.01-1.00 Hz), low (ms, 0.04-0.15 Hz), and high (ms, 0.15-0.40 Hz) components. RESULTS Study patients were divided into three groups according to the severity of IHD and antiarrhythmic efficacy of aprindine. Group 1 consisted of 15 patients with angina with single-vessel disease, and Group 2 was composed of 10 patients with either multivessel disease or post myocardial infarction; PVCs decreased in both groups as result of aprindine treatment. Group 3 consisted of 13 patients who showed no decreased PVC after aprindine treatment. RMSSD increased, and pNN50 and high-frequency spectra tended to increase in Group 1, while SD, rMSSD, pNN50, and total and low-frequency spectra decreased in Group 3; no significant changes were observed in Group 2. Aprindine significantly augments vagal activity, as reflected by the increase of rMSSD, pNN50, and high-frequency spectra in mild IHD. CONCLUSION These salutary effects are less in more severe IHD, but aprindine does not aggravate HRV. Thus, if there are salutary effects on arrhythmias and no proarrhythmic effects, aprindine could be prescribed to patients with IHD without concern about decreasing HRV.
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Affiliation(s)
- B Takase
- Self Defense Force Central Hospital, Internal Medicine, Tokyo, Japan
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27
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Etsuda H, Takase B, Uehata A, Kusano H, Hamabe A, Kuhara R, Akima T, Matsushima Y, Arakawa K, Satomura K, Kurita A, Ohsuzu F. Morning attenuation of endothelium-dependent, flow-mediated dilation in healthy young men: possible connection to morning peak of cardiac events? Clin Cardiol 2009; 22:417-21. [PMID: 10376182 PMCID: PMC6656222 DOI: 10.1002/clc.4960220610] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND AND HYPOTHESIS Brachial artery flow-mediated dilation (FMD), a noninvasive, widely used clinical index of endothelial function and magnitude of FMD, has been reported to be closely related to many coronary risk factors and coronary atherosclerosis. However, there has been no study that examines the diurnal change of FMD. We designed this study to reveal the diurnal variation of FMD in healthy volunteers. METHODS We examined FMD in response to reactive hyperemia by high resolution ultrasound in 13 healthy young men (age 25-32) at four different times over the course of a day. RESULTS Mean measures of brachial artery FMD was 4.0% at 8:00, 5.3% at 12:00, 9.7% at 17:00, and 6.9% at 21:00 hours. Flow-mediated dilation at 8:00 and at 12:00 hours was significantly lower than that at 17:00 (p < 0.05). CONCLUSIONS These results show that endothelial function has diurnal variation and is significantly attenuated in the morning. Morning attenuation of endothelial function should be recognized in clinical research and may play an important role in the circadian variation of the occurrence of acute cardiovascular events.
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Affiliation(s)
- H Etsuda
- National Defense Medical College, Saitama, Japan
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28
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Arakawa K, Kawai Y, Iioka H, Tanioka M, Nishimura J, Kitazawa H, Tsurumi K, Saito T. Microbial Community Analysis of Food-Spoilage Bacteria in Commercial Custard Creams Using Culture-Dependent and Independent Methods. J Dairy Sci 2008; 91:2938-46. [DOI: 10.3168/jds.2007-0677] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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29
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Nagamine T, Takada H, Kusakabe T, Nakazato K, Sakai T, Oikawa M, Kamiya T, Arakawa K, Iha M. Intracellular changes of metal elements by fucoidan extracted from brown seaweed (Cladosiphon okamuranus). Biol Trace Elem Res 2008; 124:60-9. [PMID: 18473126 DOI: 10.1007/s12011-008-8123-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2007] [Accepted: 03/14/2008] [Indexed: 10/22/2022]
Abstract
This study was undertaken to elucidate the intracellular changes of metal elements after the administration of fucoidan extracted from Cladosiphon okamuranus. TRL1215 cells (normal rat liver cell line) were treated with 0, 0.1, or 1.0 mg/ml fucoidan and incubated in 5% CO2 at 37 degrees C. The cellular levels of Mg, Al, Fe, and Zn were significantly increased in the 1.0 mg/ml fucoidan-treated cells compared to those of the 0.1 mg/ml fucoidan-treated cells and the control. Next, TRL1215 cells were cultured on Mylar film overnight. At 24 h after 5-bromo-2'-deoxyuridine dosing, 0, 0.1, or 1.0 mg/ml fucoidan was treated for 9 h. The cellular distribution of elements was analyzed using in-air micro-micro-particle induced X-ray emission. The X-ray spectra showed that yields of Al, Mg, and Zn were high in order of the 1.0 mg/ml fucoidan-treated sample, the 0.1 mg/ml fucoidan-treated sample, and the control. Fe yield was mildly increased by fucoidan administration. In fucoidan-treated cells, the focal accumulation of Br was correlated spatially with phosphorous-rich region, suggesting that Br was localized within the nucleus. Al distribution provided a spatial association with Br map. These data suggest that fucoidan increases the accumulations of Al, Mg, Fe, and Zn in normal rat hepatocytes, and fucoidan-binding Al is postulated to be transferred into the nucleus.
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Affiliation(s)
- T Nagamine
- School of Health Science, Gunma University Faculty of Medicine, Maebashi, 371-8514, Japan.
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30
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Shimizu Y, Dobashi K, Kusakbe T, Nagamine T, Oikawa M, Satoh T, Haga J, Ishii Y, Ohkubo T, Kamiya T, Arakawa K, Sano T, Tanaka S, Shimizu K, Matsuzaki S, Utsugi M, Mori M. In-Air Micro-Particle Induced X-ray Emission Analysis of Asbestos and Metals in Lung Tissue. Int J Immunopathol Pharmacol 2008; 21:567-76. [DOI: 10.1177/039463200802100309] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Inhalation of asbestos increases the risk of lung cancer and pulmonary fibrosis. It is difficult to directly assess the distribution and content of inhaled particles in lung tissue sections. The purpose of this study is to employ an in-air micro particle induced X-ray emission (in-air micro-PIXE) system for assessment of the spatial distribution and content of asbestos and other metals in lung tissue. A proton ion-microbeam from this system was applied to irradiate lung tissue of patients with or without asbestosis, tumor tissue from both groups, and asbestos fibers ( in vitro). The content of each element composing asbestos and those of other metals were calculated and their distribution was assessed from the characteristic X-ray pattern for each element obtained after irradiation. This in-air micro-PIXE system could identify the location of asbestos bodies composed of Si, Mg, and Fe in lung tissue sections. Macrophage and lymphocytes accumulated in that area. This new system also revealed deposits of titanium, nickel, and cobalt in the lung tissues, in addition to asbestos bodies. The Si and Fe content were higher in lungs with asbestosis than in lungs without asbestosis or in tumor tissue. Analysis of asbestos fibers composed of chrysotile, crocidolite, and amosite showed that the ratios of Si, Fe, and Mg corresponded with those for the chemical structures. In-air micro-PIXE analysis is useful for assessing the distribution and quantities of asbestos bodies and also other metals in lung tissue comparing to immune-related cell localizations, and is also useful for analysis of standard asbestos fibers.
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Affiliation(s)
| | - K. Dobashi
- Gunma University Faculty of Health Science
| | - T. Kusakbe
- 21st Century COE Program, Gunma University Faculty of Health Science, Gunma
| | - T. Nagamine
- 21st Century COE Program, Gunma University Faculty of Health Science, Gunma
| | - M. Oikawa
- 21st Century COE Program, Gunma University Faculty of Health Science, Gunma
| | - T. Satoh
- Japan Atomic Energy Agency, Takasaki Advanced Radiation Research Institute, Gunma
| | - J. Haga
- Japan Atomic Energy Agency, Takasaki Advanced Radiation Research Institute, Gunma
| | - Y. Ishii
- Japan Atomic Energy Agency, Takasaki Advanced Radiation Research Institute, Gunma
| | - T. Ohkubo
- Japan Atomic Energy Agency, Takasaki Advanced Radiation Research Institute, Gunma
| | - T. Kamiya
- Japan Atomic Energy Agency, Takasaki Advanced Radiation Research Institute, Gunma
| | - K. Arakawa
- Japan Atomic Energy Agency, Takasaki Advanced Radiation Research Institute, Gunma
| | - T. Sano
- Department of Tumor Pathology, Gunma University Graduate School of Medicine
| | - S. Tanaka
- Department of General Surgical Science, Gunma University Graduate School of Medicine
| | - K. Shimizu
- Divisiont of Thoracic and Visceral Organ Surgery, Gunma University Graduate School of Medicine, Gunma, Japan
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31
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Sankhala KK, Takimoto CH, Mita AC, Xiong H, Rodon J, Adinin R, Burns K, Toko T, Arakawa K, Kopetz S. Two phase I, pharmacokinetic (PK) and pharmacodynamic (PD) studies of TAS-109, a novel nucleoside analogue with 14 days and 7 days continuous infusion (CI) schedules. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.2577] [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: 11/20/2022] Open
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32
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Agawa H, Yamada N, Enomoto Y, Suzuki H, Hosono A, Arakawa K, Ghadimi R, Miyata M, Maeda K, Shibata K, Tokudome M, Goto C, Tokudome Y, Hoshino H, Imaeda N, Marumoto M, Suzuki S, Kobayashi M, Tokudome S. Changes of mental stress biomarkers in ultramarathon. Int J Sports Med 2008; 29:867-71. [PMID: 18418810 DOI: 10.1055/s-2008-1038490] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
We investigated the possible influence of an exhaustive physical exercise on mental stress biomarkers (serotonin, tryptophan, and beta-endorphin) along with dopamine, noradrenaline and free fatty acids in an ultramarathon race in which 45 km was run on the first day and 90 km on the second. We obtained serum samples at 6 different time points during and after the race from 18 Japanese male runners who completed the marathon. Overall changes of serum serotonin and tryptophan concentrations were statistically significant according to ANOVA for repeated measurements (p < 0.05). Serum serotonin levels elevated rapidly on the first day with the post hoc Tukey's test. Tryptophan concentrations inversely decreased during the race, possibly because of utilization for synthesis of serotonin. Levels of beta-endorphin appeared to increase on the first and second days, but were not statistically significant. In conclusion, serum serotonin, tryptophan and beta-endorphin appeared to be used for mental stress markers in physical exercise.
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Affiliation(s)
- H Agawa
- Department of Public Health, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
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33
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Nagao M, Arakawa K, Takezawa D, Fujikawa S. Long- and short-term freezing induce different types of injury in Arabidopsis thaliana leaf cells. Planta 2008; 227:477-489. [PMID: 17924137 DOI: 10.1007/s00425-007-0633-9] [Citation(s) in RCA: 8] [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: 09/12/2007] [Accepted: 09/17/2007] [Indexed: 05/25/2023]
Abstract
In nature, intact plant cells are subjected to freezing and can remain frozen for prolonged periods. We assayed the survival of Arabidopsis thaliana leaf cells following freezing and found that short- and long-term exposures produced different types of cellular injury. To identify the cause of these injuries, we examined the ultrastructure of the cell plasma membranes. Our results demonstrate that ultrastructural changes in the plasma membrane due to short-term freezing are associated with interbilayer events, including close apposition of the membranes. In both acclimated and non-acclimated leaf cells, these interbilayer events resulted in "fracture-jump lesions" in the plasma membrane. On the other hand, long-term freezing was associated with the development of extensive protein-free areas caused by the aggregation of intramembrane proteins with consequent vesiculation of the affected membrane regions; this effect was clearly different from the ultrastructural changes induced by interbilayer events. We also found that prolonged exposure of non-acclimated leaf cells to a concentrated electrolyte solution produced effects that were similar to those caused by long-term freezing, suggesting that the ultrastructural changes observed in the plasma membrane following long-term freezing are produced by exposure of the leaf cells to a concentrated electrolyte solution. This study illustrates multiple causes of freezing-induced injury in plant cells and may provide useful information regarding the functional role of the diverse changes that occur during cold acclimation.
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Affiliation(s)
- M Nagao
- Graduate School of Agriculture, Hokkaido University, Sapporo, 060-8589, Japan
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34
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Arakawa K, Ono K, Isshiki M, Mimura K, Uchikoshi M, Mori H. Observation of the One-Dimensional Diffusion of Nanometer-Sized Dislocation Loops. Science 2007; 318:956-9. [PMID: 17991859 DOI: 10.1126/science.1145386] [Citation(s) in RCA: 282] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- K Arakawa
- Research Center for Ultra-High Voltage Electron Microscopy, Osaka University, 7-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan.
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35
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Affiliation(s)
- Y Morishima
- Department of Parasitology, National Institute of Infectious Diseases, Tokyo, Japan
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Nagamine T, Nakazato K, Suzuki K, Kusakabe T, Sakai T, Oikawa M, Satoh T, Kamiya T, Arakawa K. Analysis of tissue cadmium distribution in chronic cadmium-exposed mice using in-air micro-PIXE. Biol Trace Elem Res 2007; 117:115-26. [PMID: 17873397 DOI: 10.1007/bf02698088] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2006] [Revised: 07/18/2006] [Accepted: 07/30/2006] [Indexed: 10/22/2022]
Abstract
This study undertook the analysis of tissue cadmium (Cd) distribution using in-air micro-particle-induced X-ray emission (PIXE) and the examination of the involvement of metal ions in parenteral Cd toxicity. A mouse was injected intraperitoneally with 3 mg/kg body weight of CdCl2 thrice weekly. After 27 wk, the liver and kidney were excised and fixed in 10% formalin solution for 4 h and then embedded in paraffin. Thin paraffin sections were used to analyze trace elements with in-air micro-PIXE and to examine metallothionein protein and histological changes. Cd distribution was determined by micro-PIXE in the liver and renal cortex of the Cd-exposed mouse, and the net Cd count was higher in the liver than in the renal cortex. The net iron (Fe) count was higher in the liver of the Cd-exposed mouse compared to the control, and an opposite tendency was observed in the renal cortex. Wide cellular Cd distribution was demonstrated in the liver and renal cortex of the chronic Cd-exposed mouse compared to the control. Metallothionein staining was increased by chronic exposure to Cd both in the liver and kidney, and nephrotoxicity was more apparent than hepatotoxicity. The modification of tissue Fe and calcium distribution by an intraperitoneal injection of Cd might be involved in Cd-induced toxicity.
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Affiliation(s)
- T Nagamine
- Faculty of Medicine, Course of Health Science, Gunma University Graduate School of Medical Science, 3-39-15 Showamachi, Maebashi, Gunma, 371-8514, Japan
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Todo M, Takahashi J, Watanabe H, Nakamoto J, Arakawa K. Effect of loading-rate on fracture micromechanism of methylmethacrylate–butadiene–styrene polymer blend. POLYMER 2006. [DOI: 10.1016/j.polymer.2006.04.042] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [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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Arakawa K, Hatanaka M, Kuramoto E, Ono K, Mori H. Changes in the Burgers vector of perfect dislocation loops without contact with the external dislocations. Phys Rev Lett 2006; 96:125506. [PMID: 16605927 DOI: 10.1103/physrevlett.96.125506] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2005] [Indexed: 05/08/2023]
Abstract
We report the observations of a new type of changing process in the Burgers vector of dislocations by in situ transmission electron microscopy. Small interstitial-type perfect dislocation loops in bcc iron with diameters less than approximately 50 nm are transformed from a 1/2<111> loop to another 1/2<111> one or an energetically unfavorable <100> one; furthermore, a <100> loop is transformed to a 1/2<111> one. These transformations occurred on high-energy electron irradiation or simple heating without contact with external dislocations. The origin of these phenomena is discussed.
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Affiliation(s)
- K Arakawa
- Research Center for Ultra-High Voltage Electron Microscopy, Osaka University, 7-1, Mihogaoka, Ibaraki, Osaka 567-0047, Japan.
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Arakawa K, Saruta T, Abe K, Iimura O, Ishii M, Ogihara T, Hiwada K, Fukiyama K, Fujishima M, Mizuno Y, Kikuchi T, Takaori S. Improvement of accessory symptoms of hypertension by TSUMURA Orengedokuto Extract, a four herbal drugs containing Kampo-Medicine Granules for ethical use: a double-blind, placebo-controlled study. Phytomedicine 2006; 13:1-10. [PMID: 16360926 DOI: 10.1016/j.phymed.2004.02.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2004] [Accepted: 02/17/2004] [Indexed: 05/05/2023]
Abstract
A double-blind, placebo-controlled study was conducted to evaluate the efficacy, safety, and utility of TSUMURA Orengedokuto Extract Granules for Ethical Use (TJ-15) as a treatment for the accessory symptoms of hypertension. Two capsules of the study drug were administered orally 3 times daily (i.e., before meals) for 8 weeks. Among 265 patients enrolled in the study, 134 were assigned to the TJ-15 group and 131 were assigned to the placebo group, of whom 204 patients (103 in the TJ-15 group and 101 in the placebo group) were included in the efficacy and utility analyze and 251 patients (128 in the TJ-15 group and 123 in the placebo group) were included in the safety analysis. Efficacy was significantly higher in the TJ-15 group based on the total score for the accessory symptoms of hypertensions which was the primary efficacy endpoint (Wilcoxon's rank sum test, p=0.013). When each accessory symptom of hypertension was assessed separately, efficacy was higher for hot flushes and facial suffusion in the TJ-15 group (Wilcoxon's rank sum test, p=0.034, and 0.022, respectively). There were no significant differences between the TJ-15 and the placebo groups with respect to the decrease of blood pressure or the antihypertensive effect. There was also no significant difference between the two groups with regard to the overall safety rating. The utility rating was significantly higher in the TJ-15 group than in the placebo group (Wilcoxon's rank sum test, p=0.016). In conclusion, TJ-15 was superior to placebo with respect to efficacy, safety, and utility for the treatment of accessory symptoms of hypertension.
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Affiliation(s)
- K Arakawa
- Second Department of Internal Medicine, Fukuoka University School of Medicine, Fukuoka, Japan.
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Ohmori R, Momiyama Y, Nagano M, Taniguchi H, Tanaka N, Kato R, Egashira T, Arakawa K, Nakamura H, Ohsuzu F. Mo-P1:125 Association between osteoprotegerin gene polymorphism and coronary artery disease in Japanese men. ATHEROSCLEROSIS SUPP 2006. [DOI: 10.1016/s1567-5688(06)80260-6] [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: 11/17/2022]
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Seker S, Arakawa K, Sekiguchi M, Ono Y. Biomonitoring of polycyclic aromatic hydrocarbons on hepatocellular carcinoma cell line. Water Sci Technol 2005; 52:219-24. [PMID: 16445191] [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: 05/06/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are not easily degradable and exist as persistent contaminants in water environments. In this study we collected surface sediments and water samples from five different ports around Seto Inland Sea during October 2003 to April 2004. Fifteen PAHs were detected by gas chromatography/mass spectrometer (GC-MS). Expression of CYP1A enzymes was measured by a biochemical activation of 7-ethoxy resorufin ortho-deethylase (EROD). Total water PAHs ranged from 2.5 ng/l to 132 ng/l, while sediment PAHs ranged from 296.3 ng/g to 3992.9 ng/g, which indicate low to high level of PAH pollution. Selected isomer ratios (fluoranthene/pyrene to phenanthrene/anthracene and, total molecular weight of 202/total molecular weight 202-278), and detected PAHs suggested that the origin of pollution could mostly be pyrogenic. The highest total sediment PAHs were observed at the Uno Port while the lowest were at the New Okayama Port. EROD activity implied that PAH extracted from sediment samples affected on CYP1A enzymes expression on the human hepatocellular carcinoma cell line in a short exposure time (12 hours). Relatively EROD activity showed good correlation between PAH concentration and CYP1A expression for sediment samples. The highest EROD values were observed for sediment samples at a dose of 5 ppm. In contrast water samples were at the low induction level even under the highest exposure concentration (50 ppm), except in Mizushima Port. Biomonitoring of water environments by EROD activity could be a necessary tool for understanding the effects of PAHs on living organisms at the base of cell defense.
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Affiliation(s)
- S Seker
- Department of Environmental and Civil Engineering, University of Okayama, 3-1-1 Tsushima-naka, Okayama 700-8530, Japan
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Arakawa K, Mori K, Ikeda K, Matsuzaki T, Kobayashi Y, Tomita M. G-language Genome Analysis Environment: a workbench for nucleotide sequence data mining. Bioinformatics 2003; 19:305-6. [PMID: 12538262 DOI: 10.1093/bioinformatics/19.2.305] [Citation(s) in RCA: 73] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
SUMMARY G-language Genome Analysis Environment (G-language GAE) is an open source generic software package aimed for higher efficiency in bioinformatics analysis. G-language GAE has an interface as a set of Perl libraries for software development, and a graphical user interface for easy manipulation. Both Windows and Linux versions are available. AVAILABILITY From http://www.g-language.org/ under GNU General Public License. CD-ROMs are distributed freely in major conferences.
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Affiliation(s)
- K Arakawa
- Institute for Advanced Biosciences, Keio University, Fujisawa, 252-8520, Japan
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Arakawa K. 3MP03 What is most important in treating hypertension? ATHEROSCLEROSIS SUPP 2003. [DOI: 10.1016/s1567-5688(03)90831-2] [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]
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Hankin JH, Stram DO, Arakawa K, Park S, Low SH, Lee HP, Yu MC. Singapore Chinese Health Study: development, validation, and calibration of the quantitative food frequency questionnaire. Nutr Cancer 2002; 39:187-95. [PMID: 11759279 DOI: 10.1207/s15327914nc392_5] [Citation(s) in RCA: 310] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
This report describes the development and validation/calibration of a structured food frequency questionnaire for use in a large-scale cohort study of diet and health in Chinese men and women aged 45-74 years in Singapore, the development of a food composition database for analysis of the dietary data, and the results of the dietary validation/calibration study. The present calibration study comparing estimated intakes from 24-hour recalls with those from the food frequency questionnaires revealed correlations of 0.24-0.79 for energy and nutrients among the Singapore Chinese, which are comparable to the correlation coefficients reported in calibration studies of other populations. We also report on the nutritional profiles of Singapore Chinese on the basis of results of 1,880 24-hour dietary recalls conducted on 1,022 (425 men and 597 women) cohort subjects. Comparisons with age-adjusted corresponding values for US whites and blacks show distinct differences in dietary intakes between the Singapore and US populations. The Singapore cohort will be followed prospectively to identify dietary associations with cancer risk and other health outcomes.
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Affiliation(s)
- J H Hankin
- Cancer Research Center of Hawaii, Honolulu, HI 96813, USA
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Abstract
We present MR findings in a patient with primary laryngeal lymphoma. The MR images showed a homogeneous mass in the right supraglottic larynx extending to the true vocal cord through the paraglottic space, of which signal intensity was intermediate both on T1- and T2-weighted images. The tumor was moderately enhanced and preserved mucosal layers were demonstrated as hyperintense bands on gadolinium-enhanced fat-suppressed T1-weighted images. Primary laryngeal lymphoma should be included in the differential diagnosis for a homogeneous solid mass in the supraglottic submucosal area.
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Affiliation(s)
- F Takayama
- Department of Radiology, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto 390, Japan
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Arakawa K, Takahashi H, Nakagawa S, Ogawa S. The effects of lidocaine on superoxide production and p47 Phox translocation in opsonized zymosan-activated neutrophils. Anesth Analg 2001; 93:1501-6, table of contents. [PMID: 11726431 DOI: 10.1097/00000539-200112000-00032] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [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: 11/26/2022]
Abstract
UNLABELLED Superoxide is generated by reduced nicotinamide adenine dinucleotide phosphate (NADPH) oxidase that exists in the cell membrane of neutrophils and contains p47 phox in the enzyme complex. Superoxide is closely related to various diseases, including infection, myocardial infarction, and aspiration pneumonia. Therefore we performed this study to establish how lidocaine acts on NADPH oxidase. We examined the effects of lidocaine on superoxide production in neutrophils using the method of 2-methyl-6-phenyl-3,7-dihydro [1,2-a] pyrazin-3-one (CLA phenyl)-dependent chemiluminescence activated by opsonized zymosan (OZ). Treatment with lidocaine 15 microM suppressed OZ-activated CLA phenyl-dependent chemiluminescence by approximately 40% compared with that of OZ only-activated neutrophils. It was further demonstrated that the suppressive effect of lidocaine on superoxide production was dependent on the concentration of lidocaine. Translocation of p47 phox from the cytosol to the cell membrane was studied using immunoblot analysis with a polyclonal anti-p47 phox antibody. Lidocaine suppressed OZ-induced p47 phox translocation in a dose-dependent manner. Our results suggest that suppression of superoxide production by a therapeutic dose of lidocaine correlates strongly with suppression of p47 phox translocation. IMPLICATIONS We report on the effects of lidocaine on superoxide production in opsonized zymosan-activated neutrophils. Lidocaine suppresses superoxide production in a dose-dependent manner. This suppression correlates strongly with the suppression of translocation of p47 phox, a new subunit of NADPH-oxidase.
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Affiliation(s)
- K Arakawa
- Department of Anesthesiology and Department of Biochemistry, School of Medicine, Nihon University, Tokyo, Japan
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Sakae N, Yamada T, Arakawa K, Taniwaki T, Ohyagi Y, Furuya H, Ohnishi A, Kira J. Adult-onset hereditary sensory and autonomic neuropathy accompanied by anosmia but without skin ulceration. Acta Neurol Scand 2001; 104:316-9. [PMID: 11696028 DOI: 10.1034/j.1600-0404.2001.00051.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
We report a novel type of hereditary sensory and autonomic neuropathy (HSAN) with adult onset in a Japanese family. One male and 2 females of 6 siblings were affected. They developed anosmia initially at the ages of 20-50 years, followed by anhidrosis and sensory loss. Skin ulceration was absent. Both superficial and deep sensation were impaired in the most distal parts of all 4 limbs. Orthostatic hypotension was present in all patients. This is a unique subtype of HSAN distinct from the HSAN I-V described by Dyck.
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Affiliation(s)
- N Sakae
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan.
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Yamasaki O, Terao K, Asagoe K, Setsu N, Arakawa K, Arata J, Iwatsuki K. Koebner phenomenon on skin graft donor site in cutaneous angiosarcoma. Eur J Dermatol 2001; 11:584-6. [PMID: 11701415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
An 81-year-old woman developed a necrotic plaque and a surrounding purple-red, irregularly shaped macule on her scalp. The diagnosis of angiosarcoma was confirmed histologically. A wide surgical excision was made followed by a split-thickness skin graft from her right buttock. Nine months later, she noticed a dark purple-red lesion on the donor site which grew rapidly into a large mass. Histological examination revealed irregular clefts and vascular channels lined by atypical endothelial cells. Lung metastasis and pneumothorax were also noted. The secondary tumor appeared to represent Koebner phenomenon in a patient with angiosarcoma of the scalp.
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Affiliation(s)
- O Yamasaki
- Department of Dermatology, Okayama University Graduate School of Medicine and Dentistry, 2-5-1 Shikata-cho, Okayama, 700-8558, Japan.
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Tahara T, Takase B, Yamagishi T, Takayama E, Miyazaki K, Arakawa K, Satomura K, Yoshizu H, Shimazaki H, Tamai S, Kurita A, Ohsuzu F. A case report on primary cardiac non-Hodgkin's lymphoma: an approach by magnetic resonance and thallium-201 imaging. J Cardiovasc Magn Reson 2001; 1:163-7. [PMID: 11550350 DOI: 10.3109/10976649909080846] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- T Tahara
- Department of Internal Medicine-1, National Defense Medical College, Tokorozawa City, Saitama, Japan
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Kubota E, Hayashi K, Matsuda H, Honda M, Tokuyama H, Okubo K, Naitoh M, Arakawa K, Saruta T. Role of intrarenal angiotensin II in glucocorticoid-induced renal vasodilation. Clin Exp Nephrol 2001. [DOI: 10.1007/s101570170009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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