51
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Kaneko Y, Tanaka K, Yoshizawa A, Yasuoka H, Suwa A, Satoh T, Iwanaga S, Ogawa S, Ikeda Y, Hirakata M. Successful treatment of recurrent intracardiac thrombus in Behçet's disease with immunosuppressive therapy. Clin Exp Rheumatol 2005; 23:885-7. [PMID: 16396710] [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: 05/06/2023]
Abstract
Behçet's disease (BD) is a chronic multisystem inflammatory disorder characterized by recurrent oral and genital ulcers, skin eruptions and uveitis. Neurological, gastrointestinal, and musculoskeletal systems are also involved. Although venous and arterial vasculitis occur in up to one-third of patients, intracardiac thrombus is a very rare complication. We herein report the case of a 46-year-old man with BD who presented with a large right atrial thrombus. Within a month after surgical removal, the thrombus recurred and was successfully treated with immunosuppressants that included prednisolone and cyclophosphamide.
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Affiliation(s)
- Y Kaneko
- Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan.
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52
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Tokunaga Y, Homma Y, Kambe S, Aoki D, Sakai H, Yamamoto E, Nakamura A, Shiokawa Y, Walstedt RE, Yasuoka H. NMR evidence for triple-q multipole structure in NpO2. Phys Rev Lett 2005; 94:137209. [PMID: 15904030 DOI: 10.1103/physrevlett.94.137209] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2004] [Indexed: 05/02/2023]
Abstract
In order to elucidate the nature of the exotic ordered phase of NpO2 below T(0)=26 K, we have initiated the first 17O-NMR measurements on this system. From the 17O-NMR spectrum, the occurrence of two inequivalent oxygen sites has been confirmed below T0. It has also been shown that the characteristic features of the hyperfine interaction at the oxygen sites are well explained by invoking a hyperfine interaction with field-induced antiferromagnetic moments which appear as a result of the triple-q antiferroquadrupolar order. The NMR findings strongly support the occurrence of the longitudinal triple-q multipole structure in NpO2.
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Affiliation(s)
- Y Tokunaga
- ASRC, Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan
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53
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Kakudo K, Tang W, Ito Y, Nakamura Y, Yasuoka H, Morita S, Miyauchi A. Parathyroid invasion, nodal recurrence, and lung metastasis by papillary carcinoma of the thyroid. J Clin Pathol 2004; 57:245-9. [PMID: 14990593 PMCID: PMC1770222 DOI: 10.1136/jcp.2003.012070] [Citation(s) in RCA: 8] [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: 11/03/2022]
Abstract
AIMS Parathyroid invasion by papillary thyroid carcinoma (PTC) is found in a small proportion of surgical specimens, but the clinicopathological relevance of this phenomenon is not well understood. This study investigated the possible prognostic relevance of parathyroid invasion in PTC. METHOD Parathyroid involvement was seen in 14 patients with PTC, and the clinicopathological characteristics and follow up data of these patients were analysed and compared with 164 patients without parathyroid involvement, in whom histological parathyroid examination had been undertaken, and 177 other patients without parathyroid examination (341 patients without parathyroid involvement in total). RESULTS Parathyroid invasion was found in older patients and there were more male patients in this group than in those without parathyroid invasion. These patients had more extrathyroid extension and were frequently in an advanced stage of disease. Lung metastasis was seen in two of the 14 patients, which was significantly more than that seen in control cases. Moreover, male patients with parathyroid invasion and those who were older than 55 years had reduced disease free survival compared with those without parathyroid invasion. CONCLUSION Parathyroid invasion seen in thyroid carcinoma may be an important histological feature indicating a greater chance of nodal recurrence and lung metastasis.
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Affiliation(s)
- K Kakudo
- Department of Pathology, Wakayama Medical University, 811-1 Kimiidera, Wakayama City, Wakayama 641-8509, Japan.
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54
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Furuta A, Fujii T, Yasuoka H, Takada R, Hirakata M, Mimori T. Severe hypertension associated with multiple intrarenal microaneurysms in a patient with systemic lupus erythematosus and antiphospholipid antibodies. Mod Rheumatol 2002; 12:178-81. [PMID: 24383908 DOI: 10.3109/s101650200030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract A 26-year-old Japanese woman with systemic lupus erythematosus (SLE) developed severe hyperten-sion and an increased active renin concentration (ARC), ischemic colitis, and splenic infarction. She had antiphospholipid antibodies (APA), multiple intrarenal microaneurysms, and multiple stenoses of the mesenteric arteries. Combination therapy with antihypertensive agents, aspirin, warfarin, and corticosteroids (30 mg daily) controlled her abdominal symptoms and hypertension. Multiple intrarenal microaneurysms in SLE with APA may be the cause of severe hypertension and elevated serum ARC.
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Affiliation(s)
- A Furuta
- Department of Internal Medicine, Keio University School of Medicine , Tokyo , Japan
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55
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Fujii T, Nojima T, Yasuoka H, Satoh S, Nakamura K, Kuwana M, Suwa A, Hirakata M, Mimori T. Cytokine and immunogenetic profiles in Japanese patients with adult Still's disease. Association with chronic articular disease. Rheumatology (Oxford) 2001; 40:1398-404. [PMID: 11752512 DOI: 10.1093/rheumatology/40.12.1398] [Citation(s) in RCA: 131] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVE To determine cytokines and MHC class II alleles in Japanese patients with adult Still's disease (ASD) and clarify the association between those profiles and chronic articular disease. METHODS Of 35 patients with ASD (13 men, 22 women, mean age at onset 34.0 yr), 17 (49%) had chronic arthritis (>6 months, chronic articular ASD) and 18 (51%) lacked chronic arthritis (systemic ASD). Cytokines and cytokine receptors in sera were measured by ELISA. Correlations of each cytokine with disease activity or C-reactive protein (CRP) were determined. MHC class II alleles were examined by polymerase chain reaction methods. RESULTS In chronic articular ASD, female gender was more frequent and liver dysfunction and myalgia were rarer than in systemic ASD. In active disease, the white blood cell count was lower, but total IgG was greater in patients with chronic articular ASD than in those with systemic ASD. Tumour necrosis factor (TNF) alpha, soluble TNF receptor 2 and interleukin (IL)-18 were increased in both types of ASD, even in remission. Soluble IL-2 receptors, IL-4 and IL-18 levels were correlated with disease activity or CRP value only in chronic articular ASD. Interferon gamma and IL-8 remained increased only in chronic articular ASD, even when disease activity, including IL-6 and CRP, was low. DRB1*1501 (DR2) and DRB1*1201 (DR5) alleles were more frequent in chronic articular than in systemic ASD, whereas DQB1*0602 (DQ1) was frequently observed in both types of ASD. CONCLUSION The present study suggests that ASD with chronic articular disease has distinct clinical, cytokine and immunogenetic profiles.
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Affiliation(s)
- T Fujii
- Section of Rheumatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan
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Abstract
The aim of this study was to elucidate the roles of human leukocyte antigen (HLA) class II genes in disease susceptibility in Japanese adult patients with myasthenia gravis (MG). A number of studies have shown that MG is correlated with DR3 in Caucasians. In Japanese, infantile MG is associated with DR9, but the HLA class II alleles associated with adult MG remains unclear. HLA-DRB1 and DQB1 alleles were determined by genotyping in 75 Japanese adult patients with MG and in 115 race-matched healthy adults. No statistically significant difference was observed in the overall prevalences of DRB1 and DQB1 alleles between MG patients and healthy controls, even when the patients and controls were stratified on the basis of their gender. MG patients with DQB1*0604 were younger and those with DQB1*0402 were older at disease onset than those without (P=0.03 and 0.008, respectively). Concomitant autoimmune thyroid disease was associated with DRB1*0803 (P=0.0009, corrected P=0.04). In addition, anti-acetylcholine receptor antibody levels were significantly higher in patients with DQB1*0604 than in those without (P=0.045). These findings indicate that immunogenetic backgrounds in Japanese adult MG patients are heterogeneous and are apparently different from those in Caucasian patients.
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Affiliation(s)
- S Suzuki
- Department of Neurology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo 160-8582, Japan
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57
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Yasuoka H, Mimori T. [Immunodeficiency in autoimmune diseases]. Ryoikibetsu Shokogun Shirizu 2001:428-32. [PMID: 11212765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Affiliation(s)
- H Yasuoka
- Department of Internal Medicine, Keio University School of Medicine
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58
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Mimori T, Yasuoka H, Suzuki M, Nojima T, Sato S, Fujii T, Suwa A, Hirakata M. [Meningitis in mixed connective tissue disease]. Nihon Rinsho Meneki Gakkai Kaishi 2000; 23:647-51. [PMID: 11210762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Affiliation(s)
- T Mimori
- Department of Internal Medicine, Keio University School of Medicine
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59
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Hamada N, Terakura K, Takanashi K, Yasuoka H. Analysis of atomic configuration near the interface in the vacuum-deposited Fe-V system. ACTA ACUST UNITED AC 2000. [DOI: 10.1088/0305-4608/15/4/008] [Citation(s) in RCA: 22] [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: 11/12/2022]
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60
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Yasuoka H, Yoshizumi M, Inui D, Okishima N, Houchi H, Kirima K, Oshita S, Kido H, Tamaki T. Effect of endothelin-1(1-31) on intracellular free calcium in cultured human mesangial cells. Life Sci 1999; 65:PL267-72. [PMID: 10597897 DOI: 10.1016/s0024-3205(99)00509-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
We found that human chymase selectively produces 31-amino-acid length endothelins (1-31) (ETs(1-31)). We investigated the effect of synthetic ET-1(1-31) on intracellular free Ca2+ concentration ([Ca2+]i) in cultured human mesangial cells. ET-1(1-31) increased [Ca2+]i in a concentration-dependent manner to a similar extent as ET-1. The ET-1 (1-31)-induced [Ca2+]i increase was not influenced by removal of extracellular Ca2+ but was inhibited by thapsigargin. ET-1(1-31)-induced [Ca2+]i increase was not affected by phosphoramidon. It was inhibited by BQ123, but not by BQ788. These results suggest that ET-1(1-31) by itself exhibits bioactive properties probably through endothelin ET(A) or ET(A)-like receptors. Since human chymase has been reported to exist in the kidney, ET-1(1-31) may be a candidate substance for mesangium-relevant diseases.
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Affiliation(s)
- H Yasuoka
- Department of Pharmacology, The University of Tokushima School of Medicine, Japan
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61
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Yoshizumi M, Inui D, Kirima K, Tsuchiya K, Houchi H, Azuma M, Yasuoka H, Kido H, Tamaki T. Comparison of the effects of endothelin-1, -2 and -3 (1-31) on changes in [Ca2+]i in human coronary artery smooth muscle cells. Jpn J Pharmacol 1999; 81:298-304. [PMID: 10622219 DOI: 10.1254/jjp.81.298] [Citation(s) in RCA: 6] [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: 10/27/2022]
Abstract
We have previously found that human chymase selectively cleaves big endothelins (ETs) at the Tyr31-Gly32 bond to produce 31-amino-acid endothelins, ETs (1-31). In the present study, we investigated the effects of ETs (1-31) on changes in intracellular free Ca2+ ([Ca2+]i) in cultured human coronary artery smooth muscle cells (HCASMCs) using confocal laser microscopy. ETs (1-31) increased [Ca2+]i in a concentration-dependent manner. Phosphoramidon did not inhibit the increases in [Ca2+]i caused by ETs (1-31). The [Ca2+]i increases induced by ETs (1-31) were compared to those of ETs (1-21) and big ETs. ET-1 (1-21) was about 10-times more potent than big ET-1 or ET-1 (1-31), whereas big ET-2 was 10-times less potent than ET-2 (1-21) or ET-2 (1-31). ETs (1-31) may induce [Ca2+]i increase through ET(A)-type or ET(A)-type-like receptors. The 10(-12) M ET (1-31)-induced increases in [Ca2+]i were not affected by removal of extracellular Ca2+, but were inhibited by thapsigargin. These results suggested that ET-1, -2 and -3 (1-31) showed similar potencies in increasing [Ca2+]i and mechanisms of ET (1-31)-induced increases in [Ca2+]i may be similar among the three ETs (1-31).
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Affiliation(s)
- M Yoshizumi
- Department of Pharmacology, The University of Tokushima School of Medicine, Japan
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62
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Nakamura M, Jing X, Zhang Z, Yasuoka H, Nakamura Y, Yokoi T, Oura S, Sakurai T, Kakudo K. Genetic variants of calcitonin receptor and breast cancer in Japanese. Breast 1999; 8:104-6. [PMID: 14965723 DOI: 10.1054/brst.1999.0051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Calcitonin (CT) inhibits the growth of human breast cancer cell lines and calcitonin receptor (CTR) is expressed in breast cancer lines and breast cancer tissue. In this study, the allele frequencies of the CTR gene were compared in the peripheral blood and tumour from 46 breast cancer patients with 50 peripheral blood samples from Japanese women. The allele frequencies of CTR gene did not differ between them. There was no significant association of CTR allele frequencies in invasive breast carcinomas. These results indicate that allelic variation of the CTR gene is not a significant risk factor for the development of breast carcinoma in Japanese women. Further studies are needed to clarify the role of CT and CTR in human breast tissue.
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Affiliation(s)
- M Nakamura
- Second Department of Pathology, Wakayama Medical College, Wakayama, Japan 641-0012
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63
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Yasuoka H, Sugano Y, Oka T, Watanabe C, Kaneko Y, Nojima T, Matsumura M, Fujii T, Mimori T. [Antigenic epitopes recognized by autoantibodies to calpastatin in patients with rheumatoid arthritis and their clinical significance]. Ryumachi 1997; 37:458-66. [PMID: 9256029] [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: 02/05/2023]
Abstract
We have previously described that novel autoantibodies to calpastatin (endogenous inhibitor for calcium-dependent neutral protease, calpain) were detected in patients with rheumatoid arthritis (RA) and other disorders. Since calpain is thought to mediate inflammatory process and cartilage destruction, autoantibodies to its inhibitor protein, calpastatin, may be involved in the pathogenic mechanism of rheumatoid arthritis. In the present study, we analyzed antigenic epitopes reactive with autoantibodies to calpastatin and their clinical correlation. cDNA encoding the C-terminal 178 amino acids of human calpastatin (RA-6) was digested by restriction enzymes and ligated in to pEX expression vectors. These recombinant plasmids were tranfected into E. coli POP2136 and screened by colony blots using RA sera containing anticalpastatin antibodies and a mouse monoclonal antibody. RA patient sera recognized the C-terminus of domain IV (epitope C1 ; aa. 647-673) and C-terminus of domain III (epitope C2 ; aa. 496-571), whereas the mouse monoclonal antibody recognized an entirely different region containing the calpain-binding site (epitope B2 ; aa. 572-625). To evaluate epitope reactivity of patient autoantibodies, 15 RA sera containing anti-calpastatin were reacted with epitope fusion proteins. In immunoblotting, most RA sera recognized either C1 or C2 epitopes (67% and 40%, respectively), and only one patient recognized both epitopes. B2 epitope a more progressed and sever state of arthritis than those not reacting with C1. These results suggests that anti-calpastatin antibodies may play a role in the pathogenic mechanisms of RA and their epitope reactivity may be important for disease progression.
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Affiliation(s)
- H Yasuoka
- Department of Internal Medicine, Keio University School of Medicine, Tokyo
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64
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Goto A, Yasuoka H, Isobe M, Hayashi A, Ueda Y. NMR study of the anomalous metallic state below the CDW transition temperature in Rb3Cu8S6: A possibility of self-organized spinless solitons. Phys Rev B Condens Matter 1996; 53:R13223-R13226. [PMID: 9983152 DOI: 10.1103/physrevb.53.r13223] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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65
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Kakihana M, Osada M, Käll M, Börjesson L, Mazaki H, Yasuoka H, Yashima M, Yoshimura M. Raman-active phonons in Bi2Sr2Ca1-xYxCu2O8+d (x=0-1): Effects of hole filling and internal pressure induced by Y doping for Ca, and implications for phonon assignments. Phys Rev B Condens Matter 1996; 53:11796-11806. [PMID: 9982807 DOI: 10.1103/physrevb.53.11796] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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66
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Saito Y, Inomata K, Yusu K, Goto A, Yasuoka H. Correlation between the interface structure and magnetic and transport properties for Co/Cu(110) and Ni8Fe2/Cu/Co/Cu(110) superlattices. Phys Rev B Condens Matter 1995; 52:6500-6512. [PMID: 9981879 DOI: 10.1103/physrevb.52.6500] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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67
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Saito Y, Inomata K, Goto A, Yasuoka H, Uji S, Terashima T, Aoki H. Magnon-excitation contribution to the interface magnetization in Co/Cu superlattices. Phys Rev B Condens Matter 1995; 51:3930-3932. [PMID: 9979218 DOI: 10.1103/physrevb.51.3930] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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68
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Suzuki M, Taga Y, Goto A, Yasuoka H. X-ray diffraction and NMR study on the structure of Co/Cu superlattices with artificially modified interfaces. Phys Rev B Condens Matter 1994; 50:18580-18585. [PMID: 9976294 DOI: 10.1103/physrevb.50.18580] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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69
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Kambe S, Yasuoka H, Hayashi A, Ueda Y. Anomalous long time tail behavior of spin-spin correlation in the normal state of Tl2Ba2CuOy. Phys Rev Lett 1994; 73:197-200. [PMID: 10056754 DOI: 10.1103/physrevlett.73.197] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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70
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Tomeno I, Machi T, Tai K, Koshizuka N, Kambe S, Hayashi A, Ueda Y, Yasuoka H. NMR study of spin dynamics at planar oxygen and copper sites in YBa2Cu4O8. Phys Rev B Condens Matter 1994; 49:15327-15334. [PMID: 10010647 DOI: 10.1103/physrevb.49.15327] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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71
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Kambe S, Yasuoka H, Hayashi A, Ueda Y. Evidence for transferred spin polarization at the apical O site in Tl2Ba2CuOy. Phys Rev B Condens Matter 1993; 48:6593-6596. [PMID: 10009213 DOI: 10.1103/physrevb.48.6593] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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72
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Kambe S, Yasuoka H, Hayashi A, Ueda Y. NMR study of the spin dynamics in Tl2Ba2CuOy (Tc=85 K). Phys Rev B Condens Matter 1993; 47:2825-2834. [PMID: 10006342 DOI: 10.1103/physrevb.47.2825] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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73
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Yamamoto K, Mazaki H, Yasuoka H. Magnetization of type-II superconductors in the Kim-Anderson model. Phys Rev B Condens Matter 1993; 47:915-924. [PMID: 10005569 DOI: 10.1103/physrevb.47.915] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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74
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Yamamoto K, Mazaki H, Yasuoka H, Katsuyama S, Kosuge K. Harmonic susceptibilities of a sintered oxide superconductor. Phys Rev B Condens Matter 1992; 46:1122-1129. [PMID: 10003300 DOI: 10.1103/physrevb.46.1122] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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75
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Shinmoto H, Ido K, Yuasa Y, Endo M, Yasuoka H, Edamitsu S, Takahashi K, Koizumi J, Hiramatsu K. [Effect of various contrast media on platelet aggregation--an in vivo study]. Nihon Igaku Hoshasen Gakkai Zasshi 1989; 49:163-7. [PMID: 2755782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Recently, some radiologists using non-ionic contrast media for angiography have noted the increased tendency of thrombus formation in the injection syringe or angiographic catheter contaminated with blood. In vitro studies by some authors have shown that non-ionic contrast media had only a slight anticoagulative effect as compared with ionic contrast media. But the in vivo studies comparing the anticoagulative effect of both ionic and non-ionic contrast media have not been performed previously. We investigated the effect of non-ionic and ionic contrast media on platelet aggregation in 40 patients undergoing angiography. The in vivo study revealed a negligible influence of both non-ionic and ionic contrast media on systemic platelet aggregation. The dose of contrast media also showed no significant correlation with platelet aggregation. Our study suggests that the data from in vitro experiments cannot be extended to in vivo study as for the relationship between contrast media and their anticoagulant effect.
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76
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Ueda Y, Tanaka T, Kosuge K, Ishikawa M, Yasuoka H. Superconducting properties in the Li1+xTi2−xO4 system with the spinel structure. J SOLID STATE CHEM 1988. [DOI: 10.1016/0022-4596(88)90264-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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77
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Takahashi T, Takeda T, Yuasa Y, Ido K, Endo M, Kyo E, Yasuoka H, Nakatsuka S, Matsumoto R, Kobayashi S. [Usefulness of intra-arterial digital subtraction angiography using carbon dioxide in hepatocellular carcinoma]. Nihon Igaku Hoshasen Gakkai Zasshi 1988; 48:1326-32. [PMID: 2853326] [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: 01/02/2023]
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78
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Yoshimura K, Mekata M, Takigawa M, Takahashi Y, Yasuoka H. Spin fluctuations in Y(Co1-xAlx. Phys Rev B Condens Matter 1988; 37:3593-3602. [PMID: 9944957 DOI: 10.1103/physrevb.37.3593] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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79
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80
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81
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Inouye T, Satoh K, Kose K, Suzuki H, Sato M, Yasuoka H. Experimental results with a whole body NMR-CT scanner using a resistive magnet. Radiat Med 1983; 1:8-16. [PMID: 6679899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
A brief explanation is given on various advantageous features of NMR imaging methods for practical diagnostic purposes. A whole-body NMR-CT scanner utilizing a big resistive air-core magnet has been developed in cooperation with the Institute for Solid State Physics, University of Tokyo. This prototype NMR-CT scanner employs the projection-reconstruction-imaging method with a selective excitation technique for slicing. It can provide physicians with high quality proton NMR images within a practicable, acceptable short data-collection time. Typical NMR-CT images of healthy volunteers and patients were obtained in the experiments using this device, and are presented here. Although the images mainly reflect the hydrogen nucleus concentrations of the subjects, they are strongly affected by relaxation times T1 and T2 and also by the the subjects' internal and external bodily activities. The effects of various NMR parameters in the reconstructed images are analyzed and examples showing these parameter effects are demonstrated. Another advantage of NMR imaging shown here, is a sagittal image of a human body, which is difficult to obtain by using an X-ray CT scanner.
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Kawano M, Nakayama T, Tsubura E, Yabu Y, Hashimoto T, Morioka S, Tsutsui D, Kawano T, Yasuoka H, Takada M, Nakamura J. [Evaluation of clinical effect of intravenous administration of ampicillin-oxacillin (Broadcillin) in respiratory infections (author's transl)]. Jpn J Antibiot 1978; 31:257-9. [PMID: 660932] [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: 12/23/2022]
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83
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Sato H, Owaki T, Yasuoka H, Makino K, Takano K. [Determination of serum calcium by atomic absorption spectrometry]. Rinsho Byori 1971; 19:Suppl:429. [PMID: 5168115] [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: 01/14/2023]
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84
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Nagai T, Koizuka M, Yasuoka H, Kumon S. [Case of human listeriosis in Kochi--the 1st report in the Shikoku area]. Kansenshogaku Zasshi 1971; 45:191-5. [PMID: 4997284 DOI: 10.11150/kansenshogakuzasshi1970.45.191] [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] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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