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Judex M, Neumann E, Fleck M, Pap T, Mountz JD, Gay RE, Schölmerich J, Nishioka K, Gay S, Müller-Ladner U. "Inverse wrap": an improved implantation technique for virus-transduced synovial fibroblasts in the SCID mouse model for rheumatoid arthritis. Mod Rheumatol 2014; 11:145-50. [PMID: 24383692 DOI: 10.3109/s101650170027] [Citation(s) in RCA: 8] [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: 11/13/2022]
Abstract
Abstract The SCID mouse model for rheumatoid arthritis (RA) is an established and reliable approach to examining the distinct mechanisms operative in RA synovium, and evaluating novel gene therapy strategies. However, serum concentrations of circulating gene therapy products following gene transfer are frequently too low to allow detection. This problem stimulated us to develop a novel implantation technique to improve the yield of these soluble gene products. Synovial fibroblasts from patients with RA were cultured, passaged, and transduced with Ad5 sTNFRp55:Ig. sTNFRp55:Ig production was confirmed by ELISA, and then cells were implanted into SCID mice using a novel implantation strategy in which pieces of human cartilage were engrafted into a fibroblast-saturated inert sponge. Thereafter, the sponges were implanted under the skin of the mice instead of under the kidney capsule, as in the original approach, allowing co-implantation of larger pieces of cartilage together with higher numbers of adenovirus-transduced RA synovial fibroblasts. The improved implantation technique not only resulted in a reduction in the number of mice needed in each experiment by approximately 60%, and a reduction of the time taken for surgery by about 50%, but also considerably enhanced the serum concentrations of the gene product sTNFRp55-Ig, allowing detection of the soluble TNF receptor p55 by standard ELISA. In summary, the improved implantation technique for the SCID mouse model for RA results in more economic animal treatment, and facilitates the detection and quantification of circulating gene products following adenovirus-based gene transfer into synovial fibroblasts.
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Affiliation(s)
- M Judex
- Department of Internal Medicine I, University of Regensburg , FJS-Allee 11, D-93042 Regensburg , Germany
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Higashimoto K, Jozaki K, Kosho T, Matsubara K, Fuke T, Yamada D, Yatsuki H, Maeda T, Ohtsuka Y, Nishioka K, Joh K, Koseki H, Ogata T, Soejima H. A novel de novo point mutation of the OCT-binding site in the IGF2/H19-imprinting control region in a Beckwith-Wiedemann syndrome patient. Clin Genet 2013; 86:539-44. [PMID: 24299031 DOI: 10.1111/cge.12318] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Revised: 10/21/2013] [Accepted: 11/06/2013] [Indexed: 11/29/2022]
Abstract
The IGF2/H19-imprinting control region (ICR1) functions as an insulator to methylation-sensitive binding of CTCF protein, and regulates imprinted expression of IGF2 and H19 in a parental origin-specific manner. ICR1 methylation defects cause abnormal expression of imprinted genes, leading to Beckwith-Wiedemann syndrome (BWS) or Silver-Russell syndrome (SRS). Not only ICR1 microdeletions involving the CTCF-binding site, but also point mutations and a small deletion of the OCT-binding site have been shown to trigger methylation defects in BWS. Here, mutational analysis of ICR1 in 11 BWS and 12 SRS patients with ICR1 methylation defects revealed a novel de novo point mutation of the OCT-binding site on the maternal allele in one BWS patient. In BWS, all reported mutations and the small deletion of the OCT-binding site, including our case, have occurred within repeat A2. These findings indicate that the OCT-binding site is important for maintaining an unmethylated status of maternal ICR1 in early embryogenesis.
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Affiliation(s)
- K Higashimoto
- Division of Molecular Genetics & Epigenetics, Department of Biomolecular Sciences, Faculty of Medicine, Saga University, Saga, Japan
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Romano E, Manetti M, Peruzzi F, Melchiorre D, Milia AF, Bellando-Randone S, Nishioka K, Innocenti M, Carulli C, Linari S, Morfini M, Ibba-Manneschi L, Matucci-Cerinic M, Guiducci S. Agonistic anti-human Fas monoclonal antibody induces fibroblast-like synoviocyte apoptosis in haemophilic arthropathy: potential therapeutic implications. Haemophilia 2013; 20:e32-9. [DOI: 10.1111/hae.12304] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/08/2013] [Indexed: 12/28/2022]
Affiliation(s)
- E. Romano
- Section of Internal Medicine; Division of Rheumatology; Department of Experimental and Clinical Medicine; Azienda Ospedaliero-Universitaria Careggi, and DENOthe Centre; University of Florence; Florence Italy
| | - M. Manetti
- Section of Anatomy and Histology; Department of Experimental and Clinical Medicine; University of Florence; Florence Italy
| | - F. Peruzzi
- Section of Internal Medicine; Division of Rheumatology; Department of Experimental and Clinical Medicine; Azienda Ospedaliero-Universitaria Careggi, and DENOthe Centre; University of Florence; Florence Italy
| | - D. Melchiorre
- Section of Internal Medicine; Division of Rheumatology; Department of Experimental and Clinical Medicine; Azienda Ospedaliero-Universitaria Careggi, and DENOthe Centre; University of Florence; Florence Italy
| | - A. F. Milia
- Section of Anatomy and Histology; Department of Experimental and Clinical Medicine; University of Florence; Florence Italy
| | - S. Bellando-Randone
- Section of Internal Medicine; Division of Rheumatology; Department of Experimental and Clinical Medicine; Azienda Ospedaliero-Universitaria Careggi, and DENOthe Centre; University of Florence; Florence Italy
| | - K. Nishioka
- Institute of Medical Science; Tokyo Medical University; Tokyo Japan
| | - M. Innocenti
- Department of Surgery and Translational Medicine; University of Florence; Florence Italy
| | - C. Carulli
- Department of Surgery and Translational Medicine; University of Florence; Florence Italy
| | - S. Linari
- Regional Reference Center for Inherited Coagulopathies; Azienda Ospedaliero-Universitaria Careggi; University of Florence; Florence Italy
| | - M. Morfini
- Regional Reference Center for Inherited Coagulopathies; Azienda Ospedaliero-Universitaria Careggi; University of Florence; Florence Italy
| | - L. Ibba-Manneschi
- Section of Anatomy and Histology; Department of Experimental and Clinical Medicine; University of Florence; Florence Italy
| | - M. Matucci-Cerinic
- Section of Internal Medicine; Division of Rheumatology; Department of Experimental and Clinical Medicine; Azienda Ospedaliero-Universitaria Careggi, and DENOthe Centre; University of Florence; Florence Italy
| | - S. Guiducci
- Section of Internal Medicine; Division of Rheumatology; Department of Experimental and Clinical Medicine; Azienda Ospedaliero-Universitaria Careggi, and DENOthe Centre; University of Florence; Florence Italy
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Nishioka K, Abe D, Negoro A, Sato T, Morita M, Kaneko S, Kakuta Y, Arioka H, Hirasawa A. Severe Iron-Deficiency Anemia Diagnosed as Having Malignant Melanoma of Unknown Origin. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt460.86] [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: 11/13/2022] Open
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Wakabayashi H, Hasegawa M, Sudo A, Nishioka Y, Nishioka K. AB0533 Tocilizumab improves treatment outcomes in patients with rheumatoid arthritis for whom anti-TNF agents has failed. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.533] [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: 11/03/2022]
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56
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Rokutanda R, Kishimoto M, Yamaguchi K, Shimizu H, Suyama Y, Ohara Y, Haji Y, Min C, Takeda A, Matsui Y, Okada M, Nishioka K. AB0192 Can anti-ccp antibody titer predict the use of biologics ? Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.2515] [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: 11/03/2022]
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57
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Rokutanda R, Kishimoto M, Yamaguchi K, Shimizu H, Suyama Y, Ohara Y, Haji Y, Min C, Takeda A, Matsui Y, Matsubara T, Nishioka K, Okada M. SAT0557 Diagnostic Performance of Rheumatoid Factor and Anti-CCP Antibody for Detecting Undiagnosed Rheumatoid Arthritis in Annual Health Check. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.2281] [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: 11/03/2022]
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Teragawa H, Mitsuba N, Ishibashi K, Nishioka K, Kurisu S, Kihara Y. Evaluation of coronary microvascular function in patients with vasospastic angina. World J Cardiol 2013; 5:1-7. [PMID: 23390571 PMCID: PMC3565162 DOI: 10.4330/wjc.v5.i1.1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2012] [Revised: 11/30/2012] [Accepted: 01/06/2013] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate endothelium-dependent and -independent coronary microvascular functions in patients with vasospastic angina (VSA).
METHODS: Thirty-six patients with VSA (30 men and 6 women; mean age, 58 years) were enrolled in this study. VSA was defined as ≥ 90% narrowing of the epicardial coronary arteries on angiography performed during a spasm provocation test, presence of chest pain, and/or ST-segment deviation on an electrocardiogram (ECG). Patients (n = 36) with negative spasm provocation test results and those matched for age and sex were enrolled as a control group (nonVSA group). Low-dose acetylcholine (ACh; 3 μg/min) was infused into the left coronary ostium for 2 min during the spasm provocation test. Following the spasm provocation test, nitroglycerin (0.2 mg) was administered intracoronally. Coronary blood flow (was calculated from quantitative angiography and Doppler flow velocity measurements, and the coronary flow reserve was calculated as the ratio of coronary flow velocity after injection of adenosine triphosphate (20 μg) to the baseline value. Changes in the coronary artery diameter in response to ACh and nitroglycerin infusion were expressed as percentage changes from baseline measurements.
RESULTS: Body mass index was significantly lower in the VSA group than in the nonVSA group. The frequency of conventional coronary risk factors and the rate of statin use were similar between the 2 groups. The left ventricular ejection fraction as evaluated by echocardiography was similar between the 2 groups. The duration of angina was 9 ± 2 mo. The results of blood chemistry analysis were similar between the 2 groups. Low-dose ACh did not cause coronary spasms. The change in coronary artery diameter in response to ACh was lower in the VSA group (-1.4% ± 9.3%) than in the nonVSA group (3.1% ± 6.5%, P < 0.05), whereas nitroglycerin-induced coronary artery dilatation and coronary blood flow increase in response to ACh or coronary flow reserve did not differ significantly between the 2 groups.
CONCLUSION: These findings suggest that microvascular coronary function may be preserved despite endothelial dysfunction of the epicardial coronary arteries in patients with VSA.
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Kurisu S, Iwasaki T, Ishibashi K, Mitsuba N, Dohi Y, Nishioka K, Kihara Y. Measurement of fractional flow reserve in a patient with combined myocardial bridging and coronary fixed stenosis. J Cardiol Cases 2012; 6:e163-e165. [DOI: 10.1016/j.jccase.2012.06.004] [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] [Received: 02/23/2012] [Revised: 05/22/2012] [Accepted: 06/07/2012] [Indexed: 10/28/2022] Open
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Shimizu S, Nishioka K, Onimaru R, Kinoshita R, Harada K, Nishikawa N, Abe T, Maruyama S, Shinohara N, Shirato H. Decreasing Acute and Late Toxicity Using Urethral Dose Reduction and Smaller Safety Margin Around CTV for Prostate Cancer Intensity Modulated Radiation Therapy (IMRT) With a Real-time Tumor-tracking (RTRT) System. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.468] [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: 10/27/2022]
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61
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Nishioka K, Shimizu S, Onimaru R, Kinoshita R, Harada K, Nishikawa N, Abe T, Maruyama S, Shinohara N, Shirato H. Interfractional Setup Error and Intrafractional Bladder Motion During Radiation Therapy for Bladder Tumors. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.2058] [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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Delworth M, Nishioka K, Pettaway C, Gutman M, Killion J, Voneschenbach A, Fidler I. Systemic administration of 4-amidinoindanon-1-(2'-amidino)-hydrazone, a new inhibitor of s-adenosylmethionine decarboxylase, produces cytostasis of human prostate-cancer in athymic nude-mice. Int J Oncol 2012; 6:293-9. [PMID: 21556536 DOI: 10.3892/ijo.6.2.293] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
CGP 48664A, a new S-adenosylmethionine decarboxylase inhibitor, blocks the production of spermidine and spermine, two polyamines that play critical roles in cellular proliferation. Under in vitro conditions, CGP 48664A produced cytostasis of the human prostate cancer cell lines LNCaP, LNCaP-LN3, PC-3M, and PC-3M-MM2 in a dose-dependent manner. This cytostasis was reversed by the addition of exogenous polyamines to the culture medium. LNCaP-LN3 cells or PC-3M-MM2 cells were implanted into the prostate of nude mice. Daily administration of CGP 48664A significantly inhibited tumor size and serum levels of prostate-specific antigen in mice implanted with LNCaP-LN3 cells. The therapeutic effect was related to the time the treatment was initiated, the volume of disease, and the length of treatment. CGP 48664A was not effective against the fast-growing PC-3M-MM2 tumor. These data suggest that to broaden its effectiveness, CGP 48664A should be combined with other cytoreductive agents.
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Affiliation(s)
- M Delworth
- UNIV TEXAS,MD ANDERSON CANC CTR,DEPT CELL BIOL,HOUSTON,TX 77030. UNIV TEXAS,MD ANDERSON CANC CTR,DEPT UROL,HOUSTON,TX 77030. UNIV TEXAS,MD ANDERSON CANC CTR,DEPT SURG ONCOL,HOUSTON,TX 77030
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63
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Nishioka K, Sumikawa K, Niiya S, Ogata K, Motokawa K. Cases of esophageal syncope in the early postoperative period. J Clin Anesth 2012; 24:513-6. [DOI: 10.1016/j.jclinane.2011.09.010] [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] [Received: 12/28/2010] [Revised: 09/07/2011] [Accepted: 09/09/2011] [Indexed: 10/27/2022]
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Iwasaki T, Kurisu S, Mitsuba N, Ishibashi K, Dohi Y, Nishioka K, Kihara Y. Effect of body mass index on the location of the right adrenal vein in patients with primary aldosteronism. J Renin Angiotensin Aldosterone Syst 2012; 14:156-60. [DOI: 10.1177/1470320312454765] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Toshitaka Iwasaki
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Sciences, Japan
| | - Satoshi Kurisu
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Sciences, Japan
| | - Naoya Mitsuba
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Sciences, Japan
| | - Ken Ishibashi
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Sciences, Japan
| | - Yoshihiro Dohi
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Sciences, Japan
| | - Kenji Nishioka
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Sciences, Japan
| | - Yasuki Kihara
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Sciences, Japan
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Kurisu S, Iwasaki T, Ishibashi K, Mitsuba N, Dohi Y, Nishioka K, Kihara Y. Effects of low-dose pioglitazone on glucose control, lipid profiles, renin-angiotensin-aldosterone system and natriuretic peptides in diabetic patients with coronary artery disease. J Renin Angiotensin Aldosterone Syst 2012; 14:51-5. [PMID: 22802358 DOI: 10.1177/1470320312452028] [Citation(s) in RCA: 9] [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: 11/17/2022] Open
Abstract
BACKGROUND Pioglitazone ameliorates insulin resistance, but has an adverse effect of oedema that may result in subsequent heart failure, especially in diabetic patients with coronary artery disease. In this study, we evaluated the effects of low-dose pioglitazone on glucose control, lipid profiles, renin-angiotensin-aldosterone (RAA) system and natriuretic peptides in diabetic patients with coronary artery disease. METHODS and results: We studied 22 diabetic patients with coronary artery disease and more than 40% of left ventricular ejection fraction (LVEF). Patients were treated with 15 mg of pioglitazone for 12 weeks, in addition to their other hypoglycaemic agents. Pioglitazone significantly decreased fasting blood glucose (155.2±52.9 mg/dl to 131.1±38.4 mg/dl, p<0.01) and haemoglobin A1C (7.13±0.44 to 6.69±0.47, p<0.001). It did not affect low-density lipoprotein cholesterol and high-density lipoprotein cholesterol, but significantly decreased triglyceride (115.6±28.8 mg/dl to 99.4±30.0 mg/dl, p<0.05) and atherogenic index of plasma (0.28±0.17 to 0.19±0.16, p<0.05). Pioglitazone did not affect plasma renin activity, plasma aldosterone, human atrial natriuretic peptide or N-terminal pro-brain natriuretic peptide. CONCLUSION Our data suggested that low-dose pioglitazone was a safe and useful agent at least in diabetic patients with coronary artery disease and preserved LVEF.
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Affiliation(s)
- Satoshi Kurisu
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Sciences, Hiroshima, Japan.
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Kurisu S, Kato Y, Mitsuba N, Ishibashi K, Dohi Y, Nishioka K, Kihara Y. Gender difference in QT interval in patients with primary aldosteronism. J Renin Angiotensin Aldosterone Syst 2012; 13:435-9. [DOI: 10.1177/1470320312447651] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Affiliation(s)
- Satoshi Kurisu
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Sciences, Japan
| | - Yasuko Kato
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Sciences, Japan
| | - Naoya Mitsuba
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Sciences, Japan
| | - Ken Ishibashi
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Sciences, Japan
| | - Yoshihiro Dohi
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Sciences, Japan
| | - Kenji Nishioka
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Sciences, Japan
| | - Yasuki Kihara
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Sciences, Japan
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Mitsuba N, Kurisu S, Kato Y, Ishibashi K, Fujii Y, Dohi Y, Nishioka K, Kihara Y. Adrenal venous sampling by using gadopentetate dimeglumine in patients with contraindications for iodinated contrast agents. Int J Cardiol 2012; 157:e23-5. [PMID: 21958751 DOI: 10.1016/j.ijcard.2011.09.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2011] [Accepted: 09/06/2011] [Indexed: 11/26/2022]
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Kurisu S, Kato Y, Mitsuba N, Ishibashi K, Dohi Y, Nishioka K, Kihara Y. Comparison of electrocardiographic findings between the midventricular ballooning form and apical ballooning form of takotsubo cardiomyopathy. Clin Cardiol 2012; 34:555-9. [PMID: 21905042 DOI: 10.1002/clc.20934] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Several reports have recently described the variant form of takotsubo cardiomyopathy exhibiting midventricular ballooning. The purpose of this study was to assess electrocardiographic (ECG) findings on admission in patients with midventricular ballooning. HYPOTHESIS ECG findings are different between the midventricular ballooning form and apical ballooning form of takotsubo cardiomyopathy. METHODS We reviewed ECGs on admission in 6 patients with midventricular ballooning and 20 patients with apical ballooning. The sum of ST segment elevation in leads V1 to V3 or in leads V4 to V6 was obtained. The number of leads showing ST segment elevation and/or T wave inversion was also obtained. These ECG findings were compared between the 2 groups. RESULTS In midventricular ballooning, ECG changes including ST segment elevation and/or T wave inversion were observed frequently in leads V2 and V3, and were not observed in leads II, III, -aVR, aVF, V5, and V6. On the other hand, in apical ballooning, they were found in all leads. They were most common in leads V4 and V5. The sum of ST segment elevation in leads V1 to V3 was similar (2.6 ± 2.0 mm vs 2.7 ± 2.0 mm, P = not significant), and the sum of ST segment elevation in leads V4 to V6 was significantly lower in midventricular ballooning than apical ballooning (0.4 ± 0.8 mm vs 3.5 ± 3.0 mm, P<0.05). The number of leads showing ST segment elevation and/or T wave inversion was significantly lower in midventricular ballooning than apical ballooning (3.2 ± 1.0 leads vs 6.3 ± 2.2 leads, P<0.01). CONCLUSIONS Our data suggested that midventricular ballooning may show limited ECG changes despite broad wall motion abnormality.
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Affiliation(s)
- Satoshi Kurisu
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Sciences, Hiroshima, Japan.
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69
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Mitsuba N, Teragawa H, Hata T, Nishioka K, Fujii Y, Mikami S, Fujimura N, Maruhashi T, Kurisu S, Kihara Y. Deep echo attenuation without calcification increases the risk of periprocedural myonecrosis after elective percutaneous coronary intervention in patients with coronary artery disease. Intern Med 2012; 51:691-8. [PMID: 22466822 DOI: 10.2169/internalmedicine.51.6732] [Citation(s) in RCA: 4] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
OBJECTIVE To investigate the clinical factors, including intravascular ultrasound (IVUS) findings, associated with percutaneous coronary intervention (PCI)-related periprocedural myonecrosis (PM) in patients with stable coronary artery disease (CAD). METHODS The study included 46 patients (mean age 65±2 y, 37 men) with stable CAD who underwent elective PCI using IVUS and a Doppler flow guidewire. In addition to routine IVUS measurements, the presence of deep echo attenuation (DEA) without calcification was assessed. The sum of all high-intensity transient signals (HITS) after a balloon deflation procedure was calculated using a Doppler flow guidewire. PM was defined as an elevation in troponin T to >0.03 ng/mL 24-hour after PCI. Patients were divided into 2 groups on the basis of the presence or absence of PM. RESULTS PM was identified in 17 patients (37%). Estimated glomerular filtration ratio was lower in the PM group (p=0.021). Target vessel distribution was different between the groups (p=0.004). Positive remodeling and DEA, as observed on IVUS, were more common in the PM group (p=0.03 and p<0.0001, respectively). The total number of HITS was higher in the PM group (p=0.003). Logistic regression analysis demonstrated that the presence of DEA (p=0.003) was the sole factor associated with the occurrence of PM. CONCLUSION These results demonstrated that DEA is an important factor associated with PM in patients who underwent an elective PCI. Therefore, IVUS to determine the presence of DEA should be performed before PCI.
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Affiliation(s)
- Naoya Mitsuba
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Sciences, Japan
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Abstract
A 68-year-old woman was admitted to our hospital due to sudden onset of dyspnea. On admission, electrocardiogram (ECG) showed T-wave inversion and QRS prolongation (120 msec) that were not found in her previous ECG. Chest X-ray showed pulmonary edema and cardiac enlargement. Left ventriculogram showed akinesis of the left ventricle except in the basal region. No significant coronary stenosis was found on angiogram. She was diagnosed as having tako-tsubo cardiomyopathy complicated by QRS prolongation. Intraaortic balloon pumping (IABP) was subsequently initiated for the treatment of acute heart failure. QRS prolongation was resolved immediately after the initiation of IABP, and left ventricular dysfunction was resolved within 9 days. She was discharged 14 days later.
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Affiliation(s)
- Satoshi Kurisu
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Sciences, Japan.
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Kurisu S, Ishibashi K, Kato Y, Mitsuba N, Dohi Y, Nishioka K, Kihara Y. Effects of lipid-lowering therapy with strong statin on serum polyunsaturated fatty acid levels in patients with coronary artery disease. Heart Vessels 2011; 28:34-8. [PMID: 22187148 DOI: 10.1007/s00380-011-0213-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2011] [Accepted: 11/24/2011] [Indexed: 11/29/2022]
Abstract
Residual risk of cardiovascular events after treatment with stain might be explained in part because patients have low levels of n-3 polyunsaturated fatty acids (PUFA). We examined how lipid-lowering therapy with strong statin affected serum PUFA levels in patients with coronary artery disease. The study population consisted of 46 patients with coronary artery disease whose low-density lipoprotein (LDL) cholesterol was more than 100 mg/dl. Lipid-lowering therapy was performed with a strong statin including atorvastatin (n = 22), rosuvastatin (n = 9) or pitavastatin (n = 15). Serum PUFA levels were determined by gas chromatography. The treatment with strong statin decreased the sum of dihomo-γ-linolenic acid (DGLA) and arachidonic acid (AA) levels (195 ± 41 to 184 ± 44 μg/ml, P < 0.05) as well as the sum of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) levels (233 ± 71 to 200 ± 72 μg/ml, P < 0.001). These effects of strong statin resulted in a significant decrease in ratio of the sum of EPA and DHA levels to the sum of DGLA and AA levels (1.20 ± 0.27 to 1.10 ± 0.35, P < 0.05). The percent decrease in the LDL cholesterol level correlated significantly with that in the sum of EPA and DHA levels (r = 0.38, P < 0.01). In conclusion, our results showed that lipid-lowering therapy with strong statin mainly reduced n-3 PUFAs in proportion to the decrease in the LDL cholesterol level in patients with coronary artery disease.
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Affiliation(s)
- Satoshi Kurisu
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Sciences, 1-2-3 Kasumi-cho, Minami-ku, Hiroshima, Japan.
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72
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Ishii K, Shibata O, Nishioka K, Tsuda A, Makita T, Sumikawa K. Effects of neostigmine on bronchoconstriction with continuous electrical stimulation in rats. J Anesth 2011; 26:80-4. [PMID: 22041969 DOI: 10.1007/s00540-011-1258-5] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2011] [Accepted: 10/03/2011] [Indexed: 10/15/2022]
Abstract
PURPOSE When neostigmine is used to reverse muscle relaxants in patients with asthma without signs of airway inflammation, asthma attack is occasionally encountered. It is likely that abnormally increased electrical impulses traveling from the brain through cholinergic nerves to airway smooth muscles may be one of the pathogeneses of asthma attack. We applied continuous electrical field stimulation (c-EFS) or continuous electrical stimulation (c-ES) of low frequency to the vagal nerve of the rat in vitro and in vivo to determine the role of cholinergic nerve activation in inducing airway constriction. METHODS Fifty-seven male Wistar rats were used. In an in vitro study we examined whether tetrodotoxin (TTX), an Na(+)-channel blocker, 4-DAMP, a muscarinic M(3) receptor antagonist, or neostigmine could affect c-EFS-induced contraction of the tracheal ring. In an in vivo study, we examined whether c-ES of the vagal nerve could increase maximum airway pressure (P (max)) and whether neostigmine could potentiate c-ES-induced P (max). RESULTS TTX and 4-DAMP completely inhibited c-EFS-induced contraction whereas neostigmine potentiated c-EFS-induced contraction dose-dependently. P (max) was not increased by neostigmine. P (max) was not increased by 2-Hz c-ES, but was increased by the addition of neostigmine. P (max) was increased by 5-Hz c-ES, and further increased by the addition of neostigmine. CONCLUSION The contractile response of the tracheal ring to c-EFS is potentiated by neostigmine. P (max) is increased by c-ES of the vagal nerve, and is potentiated by neostigmine. These data suggest that increased activity of the cholinergic nerve could be involved in asthma attack.
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Affiliation(s)
- Koji Ishii
- Department of Anesthesiology, Nagasaki University School of Medicine, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
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73
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Nishioka K, Shimizu S, Osaka Y, Kitamura K, Onimaru R, Sazawa A, Harabayashi T, Shinohara N, Shirato H. Organ-conserving Definitive Radiotherapy For Locally Advanced Bladder Carcinoma With Image-guided Local Boost. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.748] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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74
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Idei N, Soga J, Hata T, Fujii Y, Fujimura N, Mikami S, Maruhashi T, Nishioka K, Hidaka T, Kihara Y, Chowdhury M, Noma K, Taguchi A, Chayama K, Sueda T, Higashi Y. Response to Letter Regarding Article, “Autologous Bone-Marrow Mononuclear Cell Implantation Reduces Long-Term Major Amputation Risk in Patients With Critical Limb Ischemia: A Comparison of Atherosclerotic Peripheral Arterial Disease and Buerger Disease”. Circ Cardiovasc Interv 2011. [DOI: 10.1161/circinterventions.111.961573] [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: 11/16/2022]
Affiliation(s)
| | | | | | | | | | | | | | | | | | - Yasuki Kihara
- Department of Cardiovascular Medicine Hiroshima University Graduate School of Biomedical Sciences Hiroshima, Japan (Idei, Soga, Hata, Fujii, Fujimura, Mikami, Maruhashi, Nishioka, Hidaka, Kihara)
| | - Moniruddin Chowdhury
- Department of Hematology and Oncology Research Institute for Radiation Biology and Medicine Hiroshima University Hiroshima, Japan (Chowdhury)
| | - Kensuke Noma
- Department of Cardiovascular Physiology and Medicine Hiroshima University Graduate School of Biomedical Sciences Hiroshima, Japan (Noma)
| | - Akira Taguchi
- Department of Oral and Maxillofacial Radiology Matsumoto Dental University Shiojiri, Japan (Taguchi)
| | - Kazuaki Chayama
- Department of Medicine and Molecular Science Hiroshima University Graduate School of Biomedical Sciences Hiroshima, Japan (Chayama)
| | - Taijiro Sueda
- Department of Surgery Hiroshima University Graduate School of Biomedical Sciences Hiroshima, Japan (Sueda)
| | - Yukihito Higashi
- Department of Cardiovascular Physiology and Medicine Hiroshima University Graduate School of Biomedical Sciences Division of Regeneration and Medicine Hiroshima University Hospital Hiroshima, Japan (Higashi)
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75
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Wakabayashi H, Oka H, Nishioka Y, Hasegawa M, Sudo A, Nishioka K. Do biologics-naïve patients with rheumatoid arthritis respond better to tocilizumab than patients for whom anti-TNF agents have failed? A retrospective study. Clin Exp Rheumatol 2011; 29:314-317. [PMID: 21418781] [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] [Received: 08/20/2010] [Accepted: 12/15/2010] [Indexed: 05/30/2023]
Abstract
OBJECTIVES To determine responses to tocilizumab between patients with rheumatoid arthritis (RA) who switched to anti-TNF agents and those who are biologics-naïve. METHODS This retrospective study investigated 107 patients with RA who were treated with tocilizumab. At baseline, 61 of them had already been treated with anti-TNF agents (switched group; 46 for inefficacy and 15 for adverse events), and 46 were biologics-naïve (naïve group). Treatment responses to tocilizumab at week 12 and 24 were compared between the switched and naïve groups using the disease activity score 28 (DAS28). RESULTS Forty-two (91.3%) and 50 (82.0%) patients in the naïve and switched groups, respectively, completed 24 weeks of tocilizumab treatment. The DAS28-ESR and DAS28-CRP values (means±SD) at weeks 12 and 24 compared to baseline decreased significantly for the naïve and switched groups. The DAS28-ESR and DAS28-CRP values at weeks 12 and 24 were significantly decreased in the naïve group, compared to the switched group. Disease activity was improved in the naïve patients compared to the switched patients. CONCLUSIONS Tocilizumab was safe, tolerable, and clinically effective for patients with inadequate responses to anti-TNF therapy and for those who were biologics-naïve, and it was more effective among the latter.
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Affiliation(s)
- H Wakabayashi
- Department of Orthopaedic Surgery, Mie University Graduate School of Medicine, Tsu, Japan.
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76
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Otani T, Ohshimo S, Shokawa T, Nishioka K, Itai J, Sadamori T, Kida Y, Inagawa T, Torikoshi Y, Suzuki K, Ota K, Tamura T, Tsumura R, Iwasaki Y, Hirohashi N, Tanigawa K. A survey on laypersons' willingness in performing cardiopulmonary resuscitation. Crit Care 2011. [PMCID: PMC3066969 DOI: 10.1186/cc9715] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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77
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Idei N, Soga J, Hata T, Fujii Y, Fujimura N, Mikami S, Maruhashi T, Nishioka K, Hidaka T, Kihara Y, Chowdhury M, Noma K, Taguchi A, Chayama K, Sueda T, Higashi Y. Autologous bone-marrow mononuclear cell implantation reduces long-term major amputation risk in patients with critical limb ischemia: a comparison of atherosclerotic peripheral arterial disease and Buerger disease. Circ Cardiovasc Interv 2011; 4:15-25. [PMID: 21205941 DOI: 10.1161/circinterventions.110.955724] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
BACKGROUND Bone-marrow mononuclear cell (BM-MNC) implantation improves ischemic symptoms in patients with critical limb ischemia (CLI). The purpose of this study was to evaluate long-term clinical outcomes after autologous BM-MNC implantation in patients with CLI. METHODS AND RESULTS We assessed long-term clinical outcomes after BM-MNC implantation in 51 patients with CLI, including 25 patients with peripheral arterial disease (PAD) and 26 patients with Buerger disease. Forty-six CLI patients who had no BM-MNC implantation served as control subjects. Median follow-up period was 4.8 years. The 4-year amputation-free rates after BM-MNC implantation were 48% in PAD patients and 95% in Buerger disease, and they were 0% in control PAD patients and 6% in control Buerger disease. The 4-year overall survival rates after BM-MNC implantation were 76% in PAD patients and 100% in Buerger disease, and they were 67% in control PAD patients and 100% in control Buerger disease. Multivariable Cox proportional hazards analysis revealed that BM-MNC implantation correlated with prevention of major amputation and that hemodialysis and diabetes mellitus correlated with major amputation. In Buerger disease, ankle brachial pressure index and transcutaneous oxygen pressure were significantly increased after 1 month and remained high during 3-year follow-up. However, in patients with PAD, ankle brachial pressure index and transcutaneous oxygen pressure significantly increased after 1 month and gradually decreased during 3-year follow-up and returned to baseline levels. CONCLUSIONS These findings suggest that BM-MNC implantation is safe and effective in patients with CLI, especially in patients with Buerger disease. Clinical Trial Registration- URL: http://home.hiroshima-u.ac.jp/angio/. Unique identifier: 001769.
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Affiliation(s)
- Naomi Idei
- Department of Cardiovascular Medicine, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
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78
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Abstract
Antiangiogenic therapy, especially anti-vascular endothelial growth factor (VEGF) antibody therapy, has become an important treatment option for the management of a number of human malignancies including some gastrointestinal tumors. However, there have been many cases of resistance observed against anti-VEGF antibody treatment. As to the first reason, some types of advanced colon cancers do not upregulate VEGF. As to the second reason, not a few malignancies will acquire phenotypic resistance to VEGF or its receptors after anti-VEGF antibody therapy. The molecular and cellular mechanisms associated with the resistance to VEGF-targeted agents are not fully understood. Better understanding of the mechanisms and improvement of antiangiogenic regimens to overcome drug resistance would help in the selection of those patients who are more likely to benefit from VEGF-targeted therapy. Other possible applications of anti-VEGF antibody include chemoprevention of cancer progression. It is well known that angiogenic switch and upregulation of angiogenic cascades are essential for cancer development. Therefore, prophylatic application of anti-VEGF antibody before angiogenic switch may inhibit aggressive growth of these malignancies at an initial phase.
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Affiliation(s)
- Yutaka Takahashi
- Department of Cancer Chemotherapy, KAKEN Hospital, International University of Health and Welfare, Kounodai, Ichikawa, Japan.
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79
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Affiliation(s)
- Kino Matsui
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Sciences, Japan
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80
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Idei N, Nishioka K, Soga J, Hidaka T, Hata T, Fujii Y, Fujimura N, Maruhashi T, Mikami S, Teragawa H, Kihara Y, Noma K, Chayama K, Higashi Y. Vascular Function and Circulating Progenitor Cells in Thromboangitis Obliterans (Buerger's Disease) and Atherosclerosis Obliterans. Hypertension 2011; 57:70-8. [DOI: 10.1161/hypertensionaha.110.163683] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Thromboangitis obliterans (TAO; Buerger's disease) and atherosclerosis obliterans (ASO) are associated with endothelial dysfunction. The purpose of this study was to evaluate the role of circulating progenitor cells (CPCs) in endothelial function in patients with TAO and ASO. We measured flow-mediated vasodilation (FMD), nitroglycerine-induced vasodilation, and circulating CPCs in 30 patients with TAO and 30 age- and sex-matched healthy subjects and in 40 patients with ASO. FMD was smaller in both the TAO group and ASO group than in the control group (6.6±2.7%, 5.7±3.3% versus 9.5±3.1%,
P
<0.0001, respectively). There was no significant difference in FMD between the TAO group and ASO group. Nitroglycerine-induced vasodilation was similar in the 3 groups. The number of and migration of circulating CPCs were similar in the TAO group and control group, whereas the number of and migration of circulating CPCs were significantly lower in the ASO group than in other groups (ASO 553±297/mL versus TAO 963±543/mL; control 1063±426/mL and ASO 36±18/hpf versus TAO 62±23/hpf; control 68±18/hpf,
P
<0.0001, respectively). There was a significant relationship between the number of and migration of CPCs and FMD (
r
=0.43 and
r
=0.40,
P
<0.0001, respectively). FMD was impaired in patients with TAO as well as in patients with ASO compared to that in normal control subjects, and the number of and function of circulating CPCs were not decreased in patients with TAO. These findings may partially explain why there are differences in cardiovascular morbidity and mortality rates between patients with TAO and patients with ASO.
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Affiliation(s)
- Naomi Idei
- From the Departments of Cardiovascular Medicine (N.I., K.N., J.S., T. Hata, T. Hidaka, Y.F., N.F., S.M., T.M., H.T., Y.K.), Medicine and Molecular Science (K.C.), and Cardiovascular Physiology and Medicine (K.N., Y.H.), Hiroshima University Graduate School of Biomedical Sciences, Hiroshima, Japan
| | - Kenji Nishioka
- From the Departments of Cardiovascular Medicine (N.I., K.N., J.S., T. Hata, T. Hidaka, Y.F., N.F., S.M., T.M., H.T., Y.K.), Medicine and Molecular Science (K.C.), and Cardiovascular Physiology and Medicine (K.N., Y.H.), Hiroshima University Graduate School of Biomedical Sciences, Hiroshima, Japan
| | - Junko Soga
- From the Departments of Cardiovascular Medicine (N.I., K.N., J.S., T. Hata, T. Hidaka, Y.F., N.F., S.M., T.M., H.T., Y.K.), Medicine and Molecular Science (K.C.), and Cardiovascular Physiology and Medicine (K.N., Y.H.), Hiroshima University Graduate School of Biomedical Sciences, Hiroshima, Japan
| | - Takayuki Hidaka
- From the Departments of Cardiovascular Medicine (N.I., K.N., J.S., T. Hata, T. Hidaka, Y.F., N.F., S.M., T.M., H.T., Y.K.), Medicine and Molecular Science (K.C.), and Cardiovascular Physiology and Medicine (K.N., Y.H.), Hiroshima University Graduate School of Biomedical Sciences, Hiroshima, Japan
| | - Takaki Hata
- From the Departments of Cardiovascular Medicine (N.I., K.N., J.S., T. Hata, T. Hidaka, Y.F., N.F., S.M., T.M., H.T., Y.K.), Medicine and Molecular Science (K.C.), and Cardiovascular Physiology and Medicine (K.N., Y.H.), Hiroshima University Graduate School of Biomedical Sciences, Hiroshima, Japan
| | - Yuichi Fujii
- From the Departments of Cardiovascular Medicine (N.I., K.N., J.S., T. Hata, T. Hidaka, Y.F., N.F., S.M., T.M., H.T., Y.K.), Medicine and Molecular Science (K.C.), and Cardiovascular Physiology and Medicine (K.N., Y.H.), Hiroshima University Graduate School of Biomedical Sciences, Hiroshima, Japan
| | - Noritaka Fujimura
- From the Departments of Cardiovascular Medicine (N.I., K.N., J.S., T. Hata, T. Hidaka, Y.F., N.F., S.M., T.M., H.T., Y.K.), Medicine and Molecular Science (K.C.), and Cardiovascular Physiology and Medicine (K.N., Y.H.), Hiroshima University Graduate School of Biomedical Sciences, Hiroshima, Japan
| | - Tatsuya Maruhashi
- From the Departments of Cardiovascular Medicine (N.I., K.N., J.S., T. Hata, T. Hidaka, Y.F., N.F., S.M., T.M., H.T., Y.K.), Medicine and Molecular Science (K.C.), and Cardiovascular Physiology and Medicine (K.N., Y.H.), Hiroshima University Graduate School of Biomedical Sciences, Hiroshima, Japan
| | - Shinsuke Mikami
- From the Departments of Cardiovascular Medicine (N.I., K.N., J.S., T. Hata, T. Hidaka, Y.F., N.F., S.M., T.M., H.T., Y.K.), Medicine and Molecular Science (K.C.), and Cardiovascular Physiology and Medicine (K.N., Y.H.), Hiroshima University Graduate School of Biomedical Sciences, Hiroshima, Japan
| | - Hiroki Teragawa
- From the Departments of Cardiovascular Medicine (N.I., K.N., J.S., T. Hata, T. Hidaka, Y.F., N.F., S.M., T.M., H.T., Y.K.), Medicine and Molecular Science (K.C.), and Cardiovascular Physiology and Medicine (K.N., Y.H.), Hiroshima University Graduate School of Biomedical Sciences, Hiroshima, Japan
| | - Yasuki Kihara
- From the Departments of Cardiovascular Medicine (N.I., K.N., J.S., T. Hata, T. Hidaka, Y.F., N.F., S.M., T.M., H.T., Y.K.), Medicine and Molecular Science (K.C.), and Cardiovascular Physiology and Medicine (K.N., Y.H.), Hiroshima University Graduate School of Biomedical Sciences, Hiroshima, Japan
| | - Kensuke Noma
- From the Departments of Cardiovascular Medicine (N.I., K.N., J.S., T. Hata, T. Hidaka, Y.F., N.F., S.M., T.M., H.T., Y.K.), Medicine and Molecular Science (K.C.), and Cardiovascular Physiology and Medicine (K.N., Y.H.), Hiroshima University Graduate School of Biomedical Sciences, Hiroshima, Japan
| | - Kazuaki Chayama
- From the Departments of Cardiovascular Medicine (N.I., K.N., J.S., T. Hata, T. Hidaka, Y.F., N.F., S.M., T.M., H.T., Y.K.), Medicine and Molecular Science (K.C.), and Cardiovascular Physiology and Medicine (K.N., Y.H.), Hiroshima University Graduate School of Biomedical Sciences, Hiroshima, Japan
| | - Yukihito Higashi
- From the Departments of Cardiovascular Medicine (N.I., K.N., J.S., T. Hata, T. Hidaka, Y.F., N.F., S.M., T.M., H.T., Y.K.), Medicine and Molecular Science (K.C.), and Cardiovascular Physiology and Medicine (K.N., Y.H.), Hiroshima University Graduate School of Biomedical Sciences, Hiroshima, Japan
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81
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Abstract
An 82-year-old man had a severe stenosis in the proximal left anterior descending artery (LAD) and an intermediate stenosis in the distal right coronary artery (RCA). The territory of mid to distal LAD was perfused via an angiographically well-developed collateral circulation from the distal RCA. Fractional flow reserve (FFR) in the distal RCA was 0.84. After successful coronary intervention for the proximal LAD, repeat FFR in the distal RCA was 0.96. In this case, the severity of the stenosis in the donor artery was overestimated by using FFR due to the presence of well-developed collateral circulation.
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Affiliation(s)
- Satoshi Kurisu
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Sciences, Japan.
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82
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Teragawa H, Mitsuba N, Nishioka K, Ueda K, Kono S, Higashi Y, Chayama K, Kihara Y. Impaired coronary microvascular endothelial function in men with metabolic syndrome. World J Cardiol 2010; 2:205-10. [PMID: 21160752 PMCID: PMC2998918 DOI: 10.4330/wjc.v2.i7.205] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2010] [Revised: 06/11/2010] [Accepted: 06/18/2010] [Indexed: 02/06/2023] Open
Abstract
AIM To assess coronary endothelial function of conduit and resistance vessels in patients with metabolic syndrome (MS). METHODS Seventy-eight men (mean age, 57 years) with chest pain and angiographically normal coronary arteries were included in the study. Patients with coronary spastic angina were excluded. Changes in coronary artery diameter and coronary blood flow (CBF) in response to acetylcholine (ACh) were determined using quantitative coronary angiography and Doppler velocity measurements. Coronary flow reserve was calculated as the ratio of coronary blood velocity after adenosine triphosphate infusion relative to baseline values. Patients were divided into two groups based on the presence or absence of MS. RESULTS There were 24 patients in the MS group (31%). The increase in CBF in response to ACh infusion was impaired in the MS group (P < 0.0001) compared to the non-MS group, whereas changes in coronary artery diameter in response to ACh infusion did not differ between the two groups. Multivariate regression analysis revealed that MS was a significant factor associated with the lesser change in CBF induced by ACh infusion at 30 μg/min (P < 0.0001, r(2) = 0.46). CONCLUSION Coronary endothelial dysfunction was present at the level of resistance vessels but not conduit vessels in the MS patients included in our study.
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Affiliation(s)
- Hiroki Teragawa
- Hiroki Teragawa, Department of Cardiovascular Medicine, Hiroshima General Hospital of West Japan Railway Company, 3-1-36, Futabanosato, Higashi-ku, Hiroshima 732-0057, Japan
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83
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Shokawa T, Tanigawa K, Ishibashi K, Okada T, Nishioka K, Nakano Y, Teragawa H, Tadehara F, Yamamoto H, Ishida T, Kihara Y. THE EARLIER, THE BETTER. J Am Coll Cardiol 2010. [DOI: 10.1016/s0735-1097(10)61043-1] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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84
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Yoshimura M, Shibata O, Saito M, Yamaguchi M, Nishioka K, Makita T, Sumikawa K. Selegiline, an MAO-B inhibitor, attenuates airway smooth muscle contraction in the rat trachea. J Pharm Pharmacol 2010; 56:935-9. [PMID: 15233874 DOI: 10.1211/0022357023637] [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: 01/23/2023]
Abstract
Abstract
Selegiline is widely used for Parkinson's disease and sometimes for Alzheimer's disease. It is reported to affect intracellular Ca2+ concentration. Since intracellular Ca2+ is partly regulated by phosphatidylinositol (PI) response and is important for smooth muscle contraction, selegiline may affect airway smooth muscle tension. We examined the effects of selegiline on acetylcholine (ACh)- and KCl-induced contractile and PI responses in rat trachea. The trachea was cut into 3-mm-wide ring segments or 1-mm-wide slices. ACh (3 μM, 50% effective dose) or KCl (40mM) was added, and ring relaxation was induced by the addition of selegiline. Tracheal slices were incubated with [3H]myo-inositol and 3 μM ACh in the presence of selegiline, and [3H]inositol monophosphate (IP1) was measured. Selegiline dose-dependently attenuated ACh- and KCl-induced tracheal ring contractions. Fifty-percent inhibitory doses (ID50) of selegiline against ACh- and KCl-induced contraction were 120±30 μM and 80±20 μM, respectively. Basal and ACh-induced IP1 accumulation were 2.20±0.20 Bq and 7.88±0.23 Bq, respectively, and selegiline at a dose of 1000 μM attenuated ACh-induced IP1 accumulation (5.44±0.30 Bq). These results suggest that selegiline inhibits contractile responses through the inhibition of voltage-operated Ca2+ channels and the PI response.
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Affiliation(s)
- Maki Yoshimura
- Department of Anesthesiology, Nagasaki University School of Medicine, Nagasaki 852-8501, Japan
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85
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Fujii Y, Soga J, Nakamura S, Hidaka T, Hata T, Idei N, Fujimura N, Nishioka K, Chayama K, Kihara Y, Higashi Y. Classification of Corkscrew Collaterals in Thromboangiitis Obliterans (Buerger's Disease) - Relationship Between Corkscrew Type and Prevalence of Ischemic Ulcers -. Circ J 2010; 74:1684-8. [DOI: 10.1253/circj.cj-09-0878] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [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: 11/09/2022]
Affiliation(s)
- Yuichi Fujii
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Sciences
| | - Junko Soga
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Sciences
| | - Shuji Nakamura
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Sciences
| | - Takayuki Hidaka
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Sciences
| | - Takaki Hata
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Sciences
| | - Naomi Idei
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Sciences
| | - Noritaka Fujimura
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Sciences
| | - Kenji Nishioka
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Sciences
| | - Kazuaki Chayama
- Department of Medicine and Molecular Science, Hiroshima University Graduate School of Biomedical Sciences
| | - Yasuki Kihara
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical Sciences
| | - Yukihito Higashi
- Department of Cardiovascular Physiology and Medicine, Hiroshima University Graduate School of Biomedical Sciences
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86
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Hatano T, Kubo SI, Shimo Y, Nishioka K, Hattori N. Unmet needs of patients with Parkinson's disease: interview survey of patients and caregivers. J Int Med Res 2009; 37:717-26. [PMID: 19589255 DOI: 10.1177/147323000903700315] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
We performed a 20-item questionnaire-based interview of 132 patients with Parkinson's disease (PD): 81 patients with Hoehn & Yahr (H&Y) stage I - III PD, and 51 caregivers of patients with H&Y stage IV - V PD, to evaluate patient and caregiver satisfaction with PD treatment. The survey revealed that PD patients often experience non-motor symptoms, which are not adequately alleviated by antiparkinsonian agents. Furthermore, PD patients want their physicians to listen to them and take their concerns seriously, to explain their disease comprehensively, and to provide the latest information on PD and its treatment. Both patients and caregivers agreed on anxiety toward the future, communication difficulties, and their different movement pace; however, there were differences in their relative perceptions of various aspects of daily care. The evaluation revealed that PD patients have unmet needs in their treatment and standards of care. Areas for future improvement as highlighted in this study include: the development of better treatment for motor symptoms, the development of new treatments for non-motor symptoms and improved two-way communication between patient and physician.
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Affiliation(s)
- T Hatano
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
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87
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Horiuchi Y, Otoyama K, Kifune K, Nishioka K. Increase in epidermal ATPase-positive Langerhans cells following topical application of 70% deacetylated chitin (DAC-70) in DNCB-sensitized contact dermatitis in guinea pigs preliminary report. J DERMATOL TREAT 2009. [DOI: 10.3109/09546639609089539] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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88
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Ishihara M, Sato H, Tateishi H, Kawagoe T, Shimatani Y, Ueda K, Noma K, Yumoto A, Nishioka K. Long-term prognosis of late spontaneous reperfusion after failed thrombolysis for acute myocardial infarction. Clin Cardiol 2009; 22:787-90. [PMID: 10626080 PMCID: PMC6655750 DOI: 10.1002/clc.4960221206] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [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: 11/07/2022] Open
Abstract
BACKGROUND Early reperfusion improves left ventricular (LV) function and survival after acute myocardial infarction (MI). Thrombolytic therapy achieves early patency of the infarct artery in about two-thirds of patients. In nearly half of the remaining patients, in whom early reperfusion was not achieved with thrombolytic therapy, the infarct artery might reopen by the time of predischarge angiography. However, the impact of such late spontaneous reperfusion after failed thrombolytic therapy on LV function and long-term survival remained unclear. HYPOTHESIS This study was undertaken to assess implication of late spontaneous reperfusion after failed thrombolytic therapy on LV function and long-term survival after acute MI. METHODS The study consisted of 198 patients with anterior acute MI who underwent thrombolytic therapy and predischarge angiography: 160 patients with infarct artery patent early and late after therapy (persistent patency), 17 patients with infarct artery occluded early after therapy but patent at predischarge angiography (late spontaneous reperfusion), and 21 patients with infarct artery occluded early and late after therapy (persistent occlusion). RESULTS Persistent patency was associated with enhanced improvement in LV ejection fraction (7.7 +/- 11.8%) compared with late spontaneous reperfusion (0.0 +/- 9.6%, p = 0.03) and persistent occlusion (-1.4 +/- 9.7%, p = 0.003). Persistent patency was associated with better long-term survival than with late spontaneous reperfusion (p < 0.001) and persistent occlusion (p < 0.001). Multivariate analysis comparing persistent patency and late spontaneous reperfusion showed that early reperfusion was an independent predictor of long-term survival. CONCLUSION Late spontaneous reperfusion after failed thrombolytic therapy was associated with poor LV function and long-term survival, emphasizing the importance of early reperfusion.
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Affiliation(s)
- M Ishihara
- Department of Cardiology, Hiroshima City Hospital, Japan
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89
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Soga J, Nakamura S, Nishioka K, Umemura T, Jitsuiki D, Hidaka T, Teragawa H, Takemoto H, Goto C, Yoshizumi M, Chayama K, Higashi Y. Relationship between augmentation index and flow-mediated vasodilation in the brachial artery. Hypertens Res 2008; 31:1293-8. [PMID: 18957798 DOI: 10.1291/hypres.31.1293] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Recent studies have shown that the augmentation index (AI) is a predictor of cardiovascular complications. Endothelial dysfunction is the initial step in the pathogenesis of atherosclerosis, which in turn can lead to cardiovascular complications. Endothelial function assessed by flow-mediated dilation (FMD) can serve as an independent predictor of cardiovascular events. However, there is little information on the relationship between AI and FMD in the human vasculature, and we therefore investigated this relationship in the present study. A total of 100 subjects (71 males and 29 females; age range, 22-88 years; mean age, 59 +/- 17 years), including 83 patients with cardiovascular diseases (e.g., atherosclerosis, hypertension, coronary heart disease, stroke and peripheral arterial disease) and 17 healthy subjects were enrolled. High-resolution ultrasonography (automated vessel-diameter measurements; eTRACKING system), a linear array transducer (13 MHz) and an arm holding device were used to measure the arterial diameter response to reactive hyperemia and sublingual nitroglycerine (NTG, 75 micrograms) in all subjects. AI measured using an automated device was significantly correlated with FMD (r = -0.38, p < 0.0001). There was no significant correlation between AI and vascular response to NTG. Multiple regression analysis showed that FMD was a significant independent predictor of AI (p < 0.05). These findings suggest that increase in arterial stiffness may be associated with grade of endothelial dysfunction and that AI may be an index of not only arterial stiffness but also endothelial function.
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Affiliation(s)
- Junko Soga
- Department of Medicine and Molecular Science, Hiroshima University Graduate School of Biomedical Sciences, Hiroshima, Japan
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90
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Coolens C, Webb S, Shirato H, Nishioka K, Evans PM. A margin model to account for respiration-induced tumour motion and its variability. Phys Med Biol 2008; 53:4317-30. [DOI: 10.1088/0031-9155/53/16/007] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [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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91
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Duc PA, Yudoh K, Masuko K, Kato T, Nishioka K, Nakamura H. Development and characteristics of pannus-like soft tissue in osteoarthritic articular surface in rat osteoarthritis model. Clin Exp Rheumatol 2008; 26:589-595. [PMID: 18799089] [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: 05/26/2023]
Abstract
OBJECTIVES Pannus is invasive granulation tissue found on the articular cartilage having rheumatoid arthritis (RA). However, pannus-like tissue has also been found in osteoarthritis (OA). Our previous study showed that pannus-like tissue in OA (OA pannus) was frequently found in human OA samples. The purpose of the study is to investigate the development and the characteristics of OA pannus in a rat OA model. DESIGN Ligaments of the knee joint were transected in Wister rats to induce OA. The knee joints were removed at weeks 1, 2, 4 and 6, and subjected to histological study. Samples were stained with hematoxylin and eosin (HE), Safranin-O and immuno-stained for vimentin, CD34, type II collagen and MMP-3. The whole knee joint of OA rats was implanted in SCID mice and kept for a further 3 weeks. Then the histological findings were evaluated in HE sections. RESULT OA pannus appeared at week 2 and extend over the articular surface. OA pannus cells were positive for vimentin and/or CD34. At week 6, a part of articular surface was restored with matrix. OA pannus cells expressed MMP-3 as well as type II collagen. Histological study of rat OA knees implanted in SCID mice showed that OA pannus cells filled the joint space and invaded articular cartilage. CONCLUSIONS The presence of OA pannus was found in a rat OA model and its features were similar to those in human OA. OA pannus had both catabolic and reparative features, and the latter feature were speculated to be dominant in the later phase of the disease under a certain environmental condition.
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Affiliation(s)
- P A Duc
- Institute of Medical Science, St. Marianna University, Nippon Medical School, Tokyo, Japan
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92
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Teragawa H, Nishioka K, Higashi Y, Chayama K, Kihara Y. Treatment of Coronary Spastic Angina, Particularly Medically Refractory Coronary Spasm. Clin Med Cardiol 2008. [DOI: 10.4137/cmc.s681] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- Hiroki Teragawa
- Department of Cardiovascular Medicine, Hiroshima, 734-8551, Japan
| | - Kenji Nishioka
- Department of Cardiovascular Medicine, Hiroshima, 734-8551, Japan
| | - Yukihito Higashi
- Department of Cardiovascular Physiology and Medicine, Hiroshima, 734-8551, Japan
| | - Kazuaki Chayama
- Department of Medicine and Molecular Science, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, 734-8551, Japan
| | - Yasuki Kihara
- Department of Cardiovascular Medicine, Hiroshima, 734-8551, Japan
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93
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Obi T, Nishioka K, Ross OA, Terada T, Yamazaki K, Sugiura A, Takanashi M, Mizoguchi K, Mori H, Mizuno Y, Hattori N. Clinicopathologic study of a SNCA gene duplication patient with Parkinson disease and dementia. Neurology 2008; 70:238-41. [PMID: 18195271 DOI: 10.1212/01.wnl.0000299387.59159.db] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- T Obi
- Department of Neurology, Shizuoka Institute of Epilepsy and Neurological Disorders, Tokyo, Japan
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94
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Nishioka K, Hidaka T, Nakamura S, Umemura T, Jitsuiki D, Soga J, Goto C, Chayama K, Yoshizumi M, Higashi Y. Pycnogenol, French maritime pine bark extract, augments endothelium-dependent vasodilation in humans. Hypertens Res 2008; 30:775-80. [PMID: 18037769 DOI: 10.1291/hypres.30.775] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Pycnogenol, an extract of bark from the French maritime pine, Pinus pinaster Ait., consists of a concentrate of water-soluble polyphenols. Pycnogenol contains the bioflavonoids catechin and taxifolin as well as phenolcarbonic acids. Antioxidants, such as bioflavonoids, enhance endothelial nitric oxide (NO) synthase expression and subsequent NO release from endothelial cells. The purpose of this study was to determine Pycnogenol's effects on endothelium-dependent vasodilation in humans. This was a double-blind, randomized, placebo and active drug study. We evaluated forearm blood flow (FBF) responses to acetylcholine (ACh), an endothelium-dependent vasodilator, and to sodium nitroprusside (SNP), an endothelium-independent vasodilator, in healthy young men before and after 2 weeks of daily oral administration of Pycnogenol (180 mg/day) (n=8) or placebo (n=8). FBF was measured by using strain-gauge plethysmography. Neither the placebo nor Pycnogenol altered forearm or systemic hemodynamics. Pycnogenol, but not placebo, augmented FBF response to ACh, from 13.1 +/- 7.0 to 18.5 +/- 4.0 mL/min per 100 mL tissue (p<0.05). SNP-stimulated vasodilation was similar before and after 2 weeks of treatment in the control and Pycnogenol groups. The administration of N(G)-monomethyl-L-arginine, an NO synthase inhibitor, completely abolished Pycnogenol-induced augmentation of the FBF response to ACh. These findings suggest that Pycnogenol augments endothelium-dependent vasodilation by increasing in NO production. Pycnogenol would be useful for treating various diseases whose pathogeneses involve endothelial dysfunction.
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Affiliation(s)
- Kenji Nishioka
- Department of Cardiovascular Physiology and Medicine, Hiroshima University Graduate School of Biomedical Sciences, Hiroshima, Japan
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95
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Okiyama N, Kohsaka H, Ueda N, Satoh T, Katayama I, Nishioka K, Yokozeki H. Seborrheic Area Erythema as a Common Skin Manifestation in Japanese Patients with Dermatomyositis. Dermatology 2008; 217:374-7. [DOI: 10.1159/000158637] [Citation(s) in RCA: 12] [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] [Received: 12/21/2007] [Accepted: 03/27/2008] [Indexed: 11/19/2022] Open
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96
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Higashi Y, Goto C, Jitsuiki D, Umemura T, Nishioka K, Hidaka T, Takemoto H, Nakamura S, Soga J, Chayama K, Yoshizumi M, Taguchi A. Periodontal infection is associated with endothelial dysfunction in healthy subjects and hypertensive patients. Hypertension 2007; 51:446-53. [PMID: 18039979 DOI: 10.1161/hypertensionaha.107.101535] [Citation(s) in RCA: 165] [Impact Index Per Article: 9.7] [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]
Abstract
The purpose of this study was to evaluate endothelial function in patients with periodontitis. We evaluated forearm blood flow responses to acetylcholine and sodium nitroprusside in patients with periodontitis who had no other cardiovascular risk factors (32 men; 25+/-3 years of age), in a normal control group (20 men; 26+/-3 years of age), and in hypertensive patients with periodontitis (28 men and 10 women; 56+/-12 years of age) and without periodontitis (control group; 18 men and 6 women; 54+/-13 years of age). Forearm blood flow was measured using strain-gauge plethysmography. Circulating levels of C-reactive protein and interleukin-6 were significantly higher in the periodontitis group than in the control group. Both in healthy and hypertensive subjects, forearm blood flow responses to acetylcholine were significantly smaller in the periodontitis group than in the control group. Sodium nitroprusside-stimulated vasodilation was similar in the 2 groups. Periodontal therapy reduced serum concentrations of C-reactive protein and interleukin-6 and augmented acetylcholine-induced vasodilation in periodontitis patients with and without hypertension. After administration of N(G)-monomethyl-L-arginine, an NO synthase inhibitor, forearm blood flow response to acetylcholine was similar before and after treatment. These findings suggest that periodontitis is associated with endothelial dysfunction in subjects without cardiovascular risk factors, as well as hypertensive patients, through a decrease in NO bioavailability and that systemic inflammation may be, at least in part, a cause of endothelial dysfunction, leading to cardiovascular diseases.
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Affiliation(s)
- Yukihito Higashi
- Department of Cardiovascular Physiology and Medicine, Graduate School of Biomedical Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8551, Japan.
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97
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Masuko K, Murata M, Xiang Y, Nakamura H, Yudoh K, Nishioka K, Beppu M, Kato T. Tryptase enhances release of vascular endothelial growth factor from human osteoarthritic chondrocytes. Clin Exp Rheumatol 2007; 25:860-865. [PMID: 18173920] [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: 05/25/2023]
Abstract
OBJECTIVE A contribution of mast cells and its mediators in the pathogenesis of arthritis has been postulated. We aimed to clarify the role of mast cell-derived serine protease tryptase and proteinase activated receptor (PAR)-2-mediated signaling in chondrocytes. METHODS Human articular cartilage specimens were obtained from patients with osteoarthritis (OA), rheumatoid arthritis (RA) and with traumatic fracture without arthritis (PT; as controls) who underwent joint surgery. Isolated chondrocytes were cultured in vitro by monolayer, and confluent cells were incubated with recombinant human lung Beta tryptase or with a PAR-2 agonist peptide. The secreted level of vascular endothelial growth factor (VEGF) in culture supernatant was measured using commercially available ELISA kits, and expression of VEGF mRNA was analyzed using real-time PCR. RESULTS The tryptase-stimulated chondrocytes from OA or RA, but not from PT patients, produced significantly higher amount of VEGF in their supernatants. The response was blocked by a G-protein receptor inhibitor pertussis toxin, however, was not reproduced by incubation of cells with the PAR-2 agonist, suggesting a presence of non-PAR-2 dependent signals for the VEGF induction. In addition, actinomycin D and cycloheximide did not exert significant inhibition, indicating a regulation of VEGF release by tryptase. CONCLUSION The inflammatory mediator, mast cell-derived protease tryptase may modulate chondrocyte metabolism through induction of VEGF release.
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Affiliation(s)
- K Masuko
- Department of Bioregulation and Proteomics, Institute of Medical Science, St. Marianna University School of Medicine, Kawasaki-shi, Kanagawa, Japan.
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98
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Goto C, Nishioka K, Umemura T, Jitsuiki D, Sakagutchi A, Kawamura M, Chayama K, Yoshizumi M, Higashi Y. Acute moderate-intensity exercise induces vasodilation through an increase in nitric oxide bioavailiability in humans. Am J Hypertens 2007; 20:825-30. [PMID: 17679027 DOI: 10.1016/j.amjhyper.2007.02.014] [Citation(s) in RCA: 98] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2006] [Revised: 01/24/2007] [Accepted: 02/26/2007] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND Long-term moderate-intensity exercise augments endothelium-dependent vasodilation through an increase in nitric oxide (NO) production. The purpose of this study was to determine the effects of different intensities of acute exercise on hemodynamics in humans. METHODS We evaluated forearm blood flow (FBF) responses to different intensities of exercise (mild, 25% maximum oxygen consumption [VO2max]; moderate, 50% VO2max; and high, 75% VO2max; bicycle ergometer, for 30 min) in eight healthy young men. The FBF was measured by using a strain-gauge plethysmography. RESULTS After exercise began, moderate-intensity exercise, but not mild-intensity exercise, promptly increased FBF from 2.8+/-1.1 mL/min/100 mL to a plateau at 5.4+/-1.6 mL/min/100 mL at 5 min (P<.01) and increased mean arterial pressure from 84.7+/-11.8 mm Hg to a plateau at 125.7+/-14.3 mm Hg at 5 min (P<.01). Moderate-intensity exercise decreased forearm vascular resistance (FVR) from 29.2+/-5.4 to 16.8+/-3.2 mm Hg/mL/min/100 mL tissue (P<.01). The administration of NG-monomethyl-L-arginine, an NO synthase inhibitor, abolished moderate exercise-induced augmentation of vasodilation. Although we were not able to measure FBF during high-intensity exercise because of large body motion, high-intensity exercise markedly increased mean arterial pressure from 82.6+/-12.2 to 146.8+/-19.8 mm Hg. High-intensity exercise, but not mild-intensity or moderate-intensity exercise, increased plasma concentration of 8-isoprostane, an index of oxidative stress, from 24.1+/-10.8 to 40.2+/-16.7 pg/mL (P<.05) at 10 min after the end of exercise. CONCLUSIONS These findings suggest that acute moderate-intensity exercise induces vasodilation through an increase in NO bioavailability in humans and that high-intensity exercise increases oxidative stress.
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Affiliation(s)
- Chikara Goto
- Department of Cardiovascular Physiology and Medicine, University Graduate School of Biomedical Sciences Hiroshima, Hiroshima, Japan
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99
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Kinoshita M, Nishioka K. [Fish eye disease]. Nihon Rinsho 2007; 65 Suppl 7:618-20. [PMID: 17824098] [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: 05/17/2023]
Affiliation(s)
- Makoto Kinoshita
- Department of Internal Medicine, Teikyo University School of Medicine
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100
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Ugajin T, Yahara H, Moriyama Y, Sato T, Nishioka K, Yokozeki H. Two siblings with neonatal pemphigus vulgaris associated with mild maternal disease. Br J Dermatol 2007; 157:192-4. [PMID: 17578446 DOI: 10.1111/j.1365-2133.2007.07927.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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