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Uehara H, Taguchi D, Osanai T, Oe Y, Yoshimura T, Yashiro S, Gunji T, Okuyama M. Naphazoline intoxication with transient QT prolongation and acute myocardial injury. J Cardiol Cases 2024; 29:11-14. [PMID: 38188313 PMCID: PMC10770086 DOI: 10.1016/j.jccase.2023.09.004] [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] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 07/28/2023] [Accepted: 08/23/2023] [Indexed: 01/09/2024] Open
Abstract
A 27-year-old Japanese woman with a history of depression and an eating disorder presented to our emergency department with a chief complaint of generalized weakness. Electrocardiography showed prominent QT prolongation with multiple ventricular contractions. Chest X-ray plain computed tomography revealed pulmonary edema. Echocardiography showed decreased left ventricular systolic function. Suspecting acute myocarditis, we performed a myocardial biopsy from the right ventricular septum. The biopsy histology revealed extensive myocardial fibrosis and a very mild inflammatory cell infiltrate. In an additional detailed medical interview, the patient admitted that she had consumed three bottles of a first-aid liquid containing naphazoline approximately ~12 h before her presentation, in a suicide attempt. Her QTc and left ventricular ejection fraction improved during hospitalization. Learning objective Acute drug intoxication can cause QT prolongation and ventricular arrhythmias, cardiomyopathy, and pulmonary edema. When acute QT prolongation, myocardial damage, and pulmonary edema are seen (suggesting acute myocarditis), naphazoline intoxication should be investigated in the differential diagnosis.
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Affiliation(s)
- Hiroki Uehara
- Department of Cardiovascular Medicine, Kin-ikyo Chuo Hospital, Sapporo, Japan
| | - Dai Taguchi
- Department of Emergency, Kin-ikyo Chuo Hospital, Sapporo, Japan
| | - Toshiaki Osanai
- Department of Cardiovascular Medicine, Kin-ikyo Chuo Hospital, Sapporo, Japan
| | - Yutaro Oe
- Department of Cardiovascular Medicine, Kin-ikyo Chuo Hospital, Sapporo, Japan
| | - Takaki Yoshimura
- Department of Cardiovascular Medicine, Kin-ikyo Chuo Hospital, Sapporo, Japan
| | | | - Takahiro Gunji
- Department of Cardiovascular Medicine, Kin-ikyo Chuo Hospital, Sapporo, Japan
| | - Masaki Okuyama
- Department of Cardiovascular Medicine, Kin-ikyo Chuo Hospital, Sapporo, Japan
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Ito M, Harada T, Lang L, Saga T, Kanagawa M, Matsuda R, Yashiro S, Kano S, Sasaki Y, Nakamine H. Hairy Cell Leukemia-Japanese Variant: Report of a Patient and Literature Review. Int J Surg Pathol 2022; 30:828-838. [PMID: 35234079 DOI: 10.1177/10668969221081432] [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: 11/15/2022]
Abstract
Hairy cell leukemia-Japanese variant (HCL-jv) shares some features with, but differs in other features from, HCL variant. Recently, it has been pointed out that HCL-jv and splenic diffuse red pulp small B-cell lymphoma (SDRPL) possibly constitute the same disease. We report a patient with HCL-jv, in which the neoplastic cells in the resected spleen were positive for CD11c, CD103, tartrate-resistant acid phosphatase (by immunohistochemistry), and weakly positive for cyclin D3. They were negative for CD25, CD123, annexin A1, and BRAF V600E-derived protein. Meta-analysis of HCL-jv cases in the literature showed considerable variation in the expression of HCL-related molecules. Although the clinical features and pattern of splenic involvement of HCL-jv are similar to those of SDRPL, some cytomorphological and phenotypical differences can be pointed out. To confirm whether the weak expression of cyclin D3 in our case suggests a spectrum from HCL-jv to SDRPL or one of the characteristics of HCL-jv, further studies on a large number of cases are necessary.
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Affiliation(s)
- Mariko Ito
- 13726Kin-ikyo Chuo Hospital, Sapporo, Japan
| | | | - Lang Lang
- 13726Kin-ikyo Chuo Hospital, Sapporo, Japan
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Nakamura S, Goto T, Nara S, Kawahara Y, Yashiro S, Kano S, Hosokawa Y, Kamada H. Pure ground glass opacity (GGO) on chest CT: a rare presentation of lung metastasis of Malignant Phyllodes Tumor. Breast Cancer 2020; 27:1187-1190. [PMID: 32578005 DOI: 10.1007/s12282-020-01122-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 06/14/2020] [Indexed: 01/15/2023]
Abstract
Lung is the most common target organ for distant metastasis of phyllodes tumor (PT), where the metastatic tumors are mostly seen as nodules or masses. We report here a rare case in which pure ground-glass opacity (GGO) was observed on chest CT about 3 years after the initial treatment of breast PT. After the lung lobectomy, we histologically confirmed that it should be diagnosed as a metastasis of PT. GGO rarely shows on metastatic tumors, and no reports have been made on GGO thus far in connection with metastasis of PT. Thus, in case GGO was found on the CT of patients having a history of PT, we suggest to take possible distant-metastasis into consideration.
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Affiliation(s)
- Shoko Nakamura
- Breast Center, Kin-Ikyo Chuo Hospital, 5-1-9-1 Higashinaebo, Higashi-ku, Sapporo, 007-8505, Japan.
| | - Takeshi Goto
- Breast Center, Kin-Ikyo Chuo Hospital, 5-1-9-1 Higashinaebo, Higashi-ku, Sapporo, 007-8505, Japan
| | - Satoshi Nara
- Breast Center, Kin-Ikyo Chuo Hospital, 5-1-9-1 Higashinaebo, Higashi-ku, Sapporo, 007-8505, Japan
| | - Yoichiro Kawahara
- Respiratory Center, Kin-Ikyo Chuo Hospital, 5-1-9-1 Higashinaebo, Higashi-ku, Sapporo, 007-8505, Japan
| | - Shinichi Yashiro
- Department of Pathology, Kin-Ikyo Chuo Hospital, 5-1-9-1 Higashinaebo, Higashi-ku, Sapporo, 007-8505, Japan
| | - Satoshi Kano
- Department of Pathology, Kin-Ikyo Chuo Hospital, 5-1-9-1 Higashinaebo, Higashi-ku, Sapporo, 007-8505, Japan
| | - Yoshio Hosokawa
- Department of Surgery, Kin-Ikyo Sapporo Hospital, 4-1-9-22 Kikusui, Shiroishi-ku, Sapporo, 003-8510, Japan
| | - Hidetoshi Kamada
- Breast Center, Kin-Ikyo Chuo Hospital, 5-1-9-1 Higashinaebo, Higashi-ku, Sapporo, 007-8505, Japan
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Gopalswamy N, Mäkelä P, Yashiro S, Akiyama S, Xie H, Thakur N. Source of Energetic Protons in the 2014 September 1 Sustained Gamma-ray Emission Event. Sol Phys 2020; 295:18. [PMID: 32109973 PMCID: PMC7004439 DOI: 10.1007/s11207-020-1590-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 01/23/2020] [Indexed: 06/10/2023]
Abstract
We report on the source of > 300 MeV protons during the SOL2014-09-01 sustained gamma-ray emission (SGRE) event based on multi-wavelength data from a wide array of space- and ground-based instruments. Based on the eruption geometry we provide concrete explanation for the spatially and temporally extended γ -ray emission from the eruption. We show that the associated flux rope is of low inclination (roughly oriented in the east-west direction), which enables the associated shock to extend to the frontside. We compare the centroid of the SGRE source with the location of the flux rope's leg to infer that the high-energy protons must be precipitating between the flux rope leg and the shock front. The durations of the SOL2014-09-01 SGRE event and the type II radio burst agree with the linear relationship between these parameters obtained for other SGRE events with duration ≥ 3 hrs . The fluence spectrum of the SEP event is very hard, indicating the presence of high-energy (GeV) particles in this event. This is further confirmed by the presence of an energetic coronal mass ejection with a speed > 2000 km s - 1 , similar to those in ground level enhancement (GLE) events. The type II radio burst had emission components from metric to kilometric wavelengths as in events associated with GLE events. All these factors indicate that the high-energy particles from the shock were in sufficient numbers needed for the production of γ -rays via neutral pion decay.
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Affiliation(s)
| | - P. Mäkelä
- The Catholic University of America, Washington, DC USA
| | - S. Yashiro
- The Catholic University of America, Washington, DC USA
| | - S. Akiyama
- The Catholic University of America, Washington, DC USA
| | - H. Xie
- The Catholic University of America, Washington, DC USA
| | - N. Thakur
- The Catholic University of America, Washington, DC USA
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Saga T, Ishihara T, Kanagawa M, Hiratsuka Y, Matsuura T, Yashiro S, Kano S. [Clinical significance of chronologic immature platelet fraction analysis in TAFRO syndrome]. Rinsho Ketsueki 2018; 59:991-996. [PMID: 30185716 DOI: 10.11406/rinketsu.59.991] [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] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
TAFRO syndrome is characterized by thrombocytopenia with unknown etiology. The assessment of immature platelet fraction (IPF) is useful for differential diagnoses that include thrombocytopenia. However, the significance of IPF in cases of TAFRO syndrome remains to be reported. We present a case of TAFRO syndrome wherein the patient demonstrated a marked increase in IPF without thrombocytopenia, which offers vital information concerning TAFRO diagnosis and the serial measurements of IPF during treatment. A 65-year-old man presenting with fever was admitted to our hospital. He exhibited mild splenomegaly and lymphadenopathy, as well as rapidly worsening renal failure and fluid retention. These indications prompted the initiation of corticosteroid therapy. A normal platelet count and aberrantly high IPF implied abnormal thrombopoiesis, and subsequent bone-marrow findings suggested TAFRO syndrome. The platelet counts started to decrease following the corticosteroid therapy, but the treatment refractoriness prompted the urgent administration of rituximab. Thereafter, the platelet count nadir remained for approximately one month, whereas the decreasing IPF trend preceded platelet recovery. In the present case, a high pre-treatment IPF was demonstrated before the emergence of thrombocytopenia, and a decreasing trend of IPF was observed before platelet recovery during treatment. Therefore, serial IPF measurements could be useful for the early diagnosis and prognostication of TAFRO syndrome.
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Gopalswamy N, Mäkelä P, Yashiro S, Akiyama S. Long-term Solar Activity Studies using Microwave Imaging Observations and Prediction for Cycle 25. J Atmos Sol Terr Phys 2018; 176:26-33. [PMID: 32021560 PMCID: PMC6999695 DOI: 10.1016/j.jastp.2018.04.005] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We use microwave imaging observations from the Nobeyama Radioheliograph at 17 GHz for long-term studies of solar activity. In particular, we use the polar and low-latitude brightness temperatures as proxies to the polar magnetic field and the active-regions, respectively. We also use the location of prominence eruptions as a proxy to the filament locations as a function of time. We show that the polar microwave brightness temperature is highly correlated with the polar magnetic field strength and the fast solar wind speed. We also show that the polar microwave brightness at one cycle is correlated with the low latitude brightness with a lag of about half a solar cycle. We use this correlation to predict the strength of the solar cycle: the smoothed sunspot numbers in the southern and northern hemispheres can be predicted as 89 and 59, respectively. These values indicate that cycle 25 will not be too different from cycle 24 in its strength. We also combined the rush to the pole data from Nobeyama prominences with historical data going back to 1860 to study the north-south asymmetry of sign reversal at solar poles. We find that the reversal asymmetry has a quasi-periodicity of 3-5 cycles.
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Affiliation(s)
- N. Gopalswamy
- Code 671, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA
| | - P. Mäkelä
- Code 671, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA
- Department of Physics, The Catholic University of America, Washington DC 20064
| | - S. Yashiro
- Code 671, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA
- Department of Physics, The Catholic University of America, Washington DC 20064
| | - S. Akiyama
- Code 671, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA
- Department of Physics, The Catholic University of America, Washington DC 20064
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Nakano R, Takebe N, Ono M, Hangai M, Nakagawa R, Yashiro S, Murai T, Nagasawa K, Takahashi Y, Satoh J, Ishigaki Y. Involvement of oxidative stress in atherosclerosis development in subjects with sarcopenic obesity. Obes Sci Pract 2017; 3:212-218. [PMID: 28702214 PMCID: PMC5478807 DOI: 10.1002/osp4.97] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 11/15/2016] [Accepted: 11/28/2016] [Indexed: 12/11/2022] Open
Affiliation(s)
- R Nakano
- Division of Diabetes and Metabolism, Department of Internal Medicine Iwate Medical University Morioka Japan
| | - N Takebe
- Division of Diabetes and Metabolism, Department of Internal Medicine Iwate Medical University Morioka Japan
| | - M Ono
- Division of Diabetes and Metabolism, Department of Internal Medicine Iwate Medical University Morioka Japan
| | - M Hangai
- Division of Diabetes and Metabolism, Department of Internal Medicine Iwate Medical University Morioka Japan
| | - R Nakagawa
- Division of Diabetes and Metabolism, Department of Internal Medicine Iwate Medical University Morioka Japan
| | - S Yashiro
- Division of Diabetes and Metabolism, Department of Internal Medicine Iwate Medical University Morioka Japan
| | - T Murai
- Division of Diabetes and Metabolism, Department of Internal Medicine Iwate Medical University Morioka Japan
| | - K Nagasawa
- Division of Diabetes and Metabolism, Department of Internal Medicine Iwate Medical University Morioka Japan
| | - Y Takahashi
- Division of Diabetes and Metabolism, Department of Internal Medicine Iwate Medical University Morioka Japan
| | - J Satoh
- Department of Internal Medicine Wakabayashi Hospital, Tohoku Medical and Pharmaceutical University Sendai Japan
| | - Y Ishigaki
- Division of Diabetes and Metabolism, Department of Internal Medicine Iwate Medical University Morioka Japan
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Gopalswamy N, Mäkelä P, Akiyama S, Yashiro S, Xie H, Thakur N, Kahler SW. LARGE SOLAR ENERGETIC PARTICLE EVENTS ASSOCIATED WITH FILAMENT ERUPTIONS OUTSIDE ACTIVE REGIONS. ACTA ACUST UNITED AC 2015. [DOI: 10.1088/0004-637x/806/1/8] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Sato T, Kataoka R, Yasuda H, Yashiro S, Kuwabara T, Shiota D, Kubo Y. Air shower simulation for WASAVIES: warning system for aviation exposure to solar energetic particles. Radiat Prot Dosimetry 2014; 161:274-278. [PMID: 24344351 DOI: 10.1093/rpd/nct332] [Citation(s) in RCA: 4] [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] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
WASAVIES, a warning system for aviation exposure to solar energetic particles (SEPs), is under development by collaboration between several institutes in Japan and the USA. It is designed to deterministically forecast the SEP fluxes incident on the atmosphere within 6 h after flare onset using the latest space weather research. To immediately estimate the aircrew doses from the obtained SEP fluxes, the response functions of the particle fluxes generated by the incidence of monoenergetic protons into the atmosphere were developed by performing air shower simulations using the Particle and Heavy Ion Transport code system. The accuracy of the simulation was well verified by calculating the increase count rates of a neutron monitor during a ground-level enhancement, combining the response function with the SEP fluxes measured by the PAMELA spectrometer. The response function will be implemented in WASAVIES and used to protect aircrews from additional SEP exposure.
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Affiliation(s)
- T Sato
- Japan Atomic Energy Agency, Shirakata-Shirane 2-4, Tokai, Ibaraki 319-1195, Japan
| | - R Kataoka
- National Institute of Polar Research, Midoricho 10-3, Tachikawa, Tokyo 190-8518, Japan Tokyo Institute of Technology, Ookayama 2-12-1, Meguro, Tokyo 152-8550, Japan
| | - H Yasuda
- National Institute of Radiological Sciences, Anagawa 4-9-1, Inage, Chiba 263-8555, Japan
| | - S Yashiro
- The Catholic University of America, 620 Michigan Av. Northeast, Washington, DC 20064, USA
| | - T Kuwabara
- University of Delaware, 401 Academy St., Newark, DE 19716, USA
| | - D Shiota
- Solar-Terrestrial Environment Laboratory, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8601, Japan RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Kubo
- National Institute of Information and Communications Technology, Nukui-kita 4-2-1, Koganei, Tokyo 184-8795, Japan
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Affiliation(s)
- P. Mäkelä
- Physics Department; Catholic University of America; Washington, D. C. USA
- NASA Goddard Space Flight Center; Greenbelt Maryland USA
| | - N. Gopalswamy
- NASA Goddard Space Flight Center; Greenbelt Maryland USA
| | - S. Akiyama
- Physics Department; Catholic University of America; Washington, D. C. USA
- NASA Goddard Space Flight Center; Greenbelt Maryland USA
| | - H. Xie
- Physics Department; Catholic University of America; Washington, D. C. USA
- NASA Goddard Space Flight Center; Greenbelt Maryland USA
| | - S. Yashiro
- Physics Department; Catholic University of America; Washington, D. C. USA
- NASA Goddard Space Flight Center; Greenbelt Maryland USA
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Zhang J, Richardson IG, Webb DF, Gopalswamy N, Huttunen E, Kasper JC, Nitta NV, Poomvises W, Thompson BJ, Wu CC, Yashiro S, Zhukov AN. Solar and interplanetary sources of major geomagnetic storms (Dst≤ −100 nT) during 1996-2005. ACTA ACUST UNITED AC 2007. [DOI: 10.1029/2007ja012321] [Citation(s) in RCA: 381] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- J. Zhang
- Department of Computational and Data Sciences; George Mason University; Fairfax Virginia USA
| | - I. G. Richardson
- NASA Goddard Space Flight Center; Greenbelt Maryland USA
- Department of Astronomy; University of Maryland; College Park Maryland USA
| | - D. F. Webb
- Institute for Scientific Research; Boston College; Chestnut Hill Massachusetts USA
| | - N. Gopalswamy
- NASA Goddard Space Flight Center; Greenbelt Maryland USA
| | - E. Huttunen
- Space Science Laboratory; University of California; Berkeley California USA
| | - J. C. Kasper
- Kavli Institute for Astrophysics and Space Research; Massachusetts Institute of Technology; Cambridge Massachusetts USA
| | - N. V. Nitta
- Lockheed Martin Solar and Astrophysics Laboratory; Palo Alto California USA
| | - W. Poomvises
- Department of Computational and Data Sciences; George Mason University; Fairfax Virginia USA
| | - B. J. Thompson
- NASA Goddard Space Flight Center; Greenbelt Maryland USA
| | - C.-C. Wu
- NASA Goddard Space Flight Center; Greenbelt Maryland USA
- Center for Space Plasma and Aeronomic Research; University of Alabama in Huntsville; Huntsville Alabama USA
| | - S. Yashiro
- NASA Goddard Space Flight Center; Greenbelt Maryland USA
- Catholic University of America; Washington, DC USA
| | - A. N. Zhukov
- Royal Observatory of Belgium; Brussels Belgium
- Skobeltsyn Institute of Nuclear Physics; Moscow State University; Moscow Russia
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Affiliation(s)
- N. Gopalswamy
- Solar System Exploration Division; NASA Goddard Space Flight Center; Greenbelt Maryland USA
| | - S. Yashiro
- Solar System Exploration Division; NASA Goddard Space Flight Center; Greenbelt Maryland USA
- Catholic University of America; Washington DC USA
| | - S. Akiyama
- Solar System Exploration Division; NASA Goddard Space Flight Center; Greenbelt Maryland USA
- Catholic University of America; Washington DC USA
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Xie H, Gopalswamy N, Manoharan PK, Lara A, Yashiro S, Lepri S. Long-lived geomagnetic storms and coronal mass ejections. ACTA ACUST UNITED AC 2006. [DOI: 10.1029/2005ja011287] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Gopalswamy N, Yashiro S, Liu Y, Michalek G, Vourlidas A, Kaiser ML, Howard RA. Coronal mass ejections and other extreme characteristics of the 2003 October-November solar eruptions. ACTA ACUST UNITED AC 2005. [DOI: 10.1029/2004ja010958] [Citation(s) in RCA: 111] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- N. Gopalswamy
- NASA Goddard Space Flight Center; Greenbelt Maryland USA
| | - S. Yashiro
- NASA Goddard Space Flight Center; Greenbelt Maryland USA
| | - Y. Liu
- W.W. Hansen Experimental Physics Laboratory; Stanford University; Stanford California USA
| | - G. Michalek
- NASA Goddard Space Flight Center; Greenbelt Maryland USA
| | | | - M. L. Kaiser
- NASA Goddard Space Flight Center; Greenbelt Maryland USA
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Morita T, Shimada A, Yashiro S, Takeuchi T, Hikasa Y, Okamoto Y, Mabuchi Y. Myofiber expression of class I major histocompatibility complex accompanied by CD8+ T-cell-associated myofiber injury in a case of canine polymyositis. Vet Pathol 2002; 39:512-5. [PMID: 12126158 DOI: 10.1354/vp.39-4-512] [Citation(s) in RCA: 9] [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: 11/19/2022]
Abstract
A 7-year-old female Labrador Retriever dog showed extreme muscular weakness, muscle wasting, dysbasia, and mild dysphagia. An elevated value of creatine kinase (335 IU/liter) in the serum was detected. Electromyographic findings included increased insertional activity, fibrillation potentials, and bizarre high-frequency repetitive potentials. Histopathologic examination of skeletal muscles revealed myofiber necrosis and phagocytosis, regeneration of myofibers, and perivascular, perimysial, and endomysial infiltrations of lymphocytes, macrophages and plasma cells. Immunohistochemical evaluation demonstrated that infiltrative cells in the early stage of myositis were CD8+ T-cells and that an increased expression of major histocompatibility complex (MHC) class I was apparent on the surface of nonnecrotic muscle fibers. In contrast, many CD3+ cells (T cells) and HLA-DR-positive macrophages and B lymphocytes were found in the severely affected areas. These results suggest that both expression of MHC class I and CD8+ T-cell infiltration may play an important role in initiation of myositis. These histopathologic findings resemble those reported in naturally occurring polymyositis in humans.
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Affiliation(s)
- T Morita
- Department of Veterinary Pathology, Tottori University, Japan.
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Gopalswamy N, Yashiro S, Kaiser ML, Howard RA, Bougeret JL. Characteristics of coronal mass ejections associated with long-wavelength type II radio bursts. ACTA ACUST UNITED AC 2001. [DOI: 10.1029/2001ja000234] [Citation(s) in RCA: 177] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Miyamoto C, Yashiro S, Nagata Y, Nagataki S. [Ocular complications in patients infected with human immunodeficiency virus seen at the Acquired Immunodeficiency Syndrome Clinical Center]. Nippon Ganka Gakkai Zasshi 2001; 105:483-7. [PMID: 11510114] [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: 02/21/2023]
Abstract
PURPOSE To examine the ocular complications in patients infected with human immunodeficiency virus(HIV) in Japan. METHODS The medical records of 322 patients seen at the acquired immunodeficiency syndrome(AIDS) Clinical Center from July 1, 1997 through December 31, 1998 were reviewed, and the HIV-associated ocular complications were correlated with serum CD 4+ T-lymphocyte counts. RESULTS Ocular complications were found in 51 patients: 35 cases with retinal microvasculopathy, 17 cases with cytomegalovirus retinitis(9 quiescent, 6 active, and 2 recurrent), and 1 case each with tuberculous uveitis, phthisis bulbi after necrotizing herpetic retinopathy, conjunctival Kaposi's sarcoma, papilledema, divergence palsy, hemianopia, and abducens palsy. Retinal microvasculopathy was present in patients with CD 4+ T-lymphocyte counts above 500/mm3, but was more common in patients with cell counts below 200/mm3. Among 6 patients with active cytomegalovirus retinitis, 5 patients had a CD 4+ T-lymphocyte count below 50/mm3 at the onset of retinitis, while one patient developed retinitis after the cell count increased to over 200/mm3 with highly active antiretroviral therapy. CONCLUSION Cytomegalovirus retinopathy may occur in patients with a CD 4+ T-lymphocyte count of more than 200/mm3.
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Affiliation(s)
- C Miyamoto
- Department of Ophthalmology, International Medical Center of Japan, 1-21-1 Toyama, Shinjuku-ku, Tokyo 162-8655, Japan
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Nagai T, Iinuma TA, Uchiyama M, Ishimara T, Yashiro S, Sternberg J. Radiocontamination of the environment and its effects on the mother and fetus--3. II. Retention of cesium 137 by pregnant women, placentae and infants. Int J Appl Radiat Isot 1970; 21:363-74. [PMID: 5431650 DOI: 10.1016/0020-708x(70)90148-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Nagai T, Sugita H, Iinuma TA, Furukawa T, Yashiro S. Body-potassium concentation and rubidium metabolism determined by whole-body counting in Duchenne muscular dystrophy and its genetic carrier state. J Nucl Med 1969; 10:1-7. [PMID: 5797554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
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Yashiro S. [Early diagnostic methods in uterine carcinoma helpful to general practitioners]. Sanfujinka No Jissai 1968; 17:55-62. [PMID: 5695416] [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: 05/21/2023]
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