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Ishibuchi K, Fujii K, Otsuji S, Takiuchi S, Hasegawa K, Tamaru H, Ishii R, Yasuda S, Nakabayashi S, Yamamoto W, Kusumoto H, Taniguchi Y, Kakishita M, Shimatani Y, Higashino Y. Influence of caffeine intake on intravenous adenosine-induced fractional flow reserve. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
This study evaluated whether caffeine abstention is required before fractional flow reserve (FFR) measurement by intravenous adenosine triphosphate (ATP) administration in Japanese patients.
Methods and results
This study was a subanalysis of a previously published study and a total of 208 intermediate lesions that underwent FFR measurements were enrolled for this analysis. Hyperemia was induced by continuous intravenous ATP infusion at 150μg/kg/min (IVATP150) and 210μg/kg/min (IVATP210), and by intracoronary administration of nicorandil 2mg (ICNIC2mg) as a reference standard. The degree of change in the FFR value both after IVATP150 and after IVATP210, as compared with the FFR value after ICNIC2mg was similar between the caffeine and non-caffeine groups (−0.04±0.05 vs. −0.04±0.07, and 0.00±0.02 vs. 0.01±0.02, respectively). In patients who consumed caffeine before the FFR measurement, the degree of FFR change was independent of the time interval (<12 hours, 12–24 hours, and 24–48 hours) between caffeine intake and catheterization both after IVATP150 and ICNIC2mg and after IVATP210 and ICNIC2mg.
Conclusion
When compared with the FFR value after ICNIC2mg, the degree of change in the FFR value both after IVATP150 and after IVATP210 remained similar regardless of caffeine intake. Strict caffeine abstention before intravenous ATP-induced FFR measurement may not be required in clinical practice.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- K Ishibuchi
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - K Fujii
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - S Otsuji
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - S Takiuchi
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - K Hasegawa
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - H Tamaru
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - R Ishii
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - S Yasuda
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - S Nakabayashi
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - W Yamamoto
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - H Kusumoto
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - Y Taniguchi
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - M Kakishita
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - Y Shimatani
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - Y Higashino
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
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Tamaru H, Fujii K, Otsuji S, Takiuchi S, Hasegawa K, Ishibuchi K, Ishii R, Yamamoto W, Nakabayashi S, Kakishita M, Ibuki M, Nagayama N, Higashino Y. P3667Prediction of functional ischemia using resting distal coronary pressure to aortic pressure ratio in individual coronary artery. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3667] [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: 11/13/2022] Open
Affiliation(s)
- H Tamaru
- Higashi Takarazuka Satoh Hospital, Department of Cardiology, Takarazuka, Japan
| | - K Fujii
- Higashi Takarazuka Satoh Hospital, Department of Cardiology, Takarazuka, Japan
| | - S Otsuji
- Higashi Takarazuka Satoh Hospital, Department of Cardiology, Takarazuka, Japan
| | - S Takiuchi
- Higashi Takarazuka Satoh Hospital, Department of Cardiology, Takarazuka, Japan
| | - K Hasegawa
- Higashi Takarazuka Satoh Hospital, Department of Cardiology, Takarazuka, Japan
| | - K Ishibuchi
- Higashi Takarazuka Satoh Hospital, Department of Cardiology, Takarazuka, Japan
| | - R Ishii
- Higashi Takarazuka Satoh Hospital, Department of Cardiology, Takarazuka, Japan
| | - W Yamamoto
- Higashi Takarazuka Satoh Hospital, Department of Cardiology, Takarazuka, Japan
| | - S Nakabayashi
- Higashi Takarazuka Satoh Hospital, Department of Cardiology, Takarazuka, Japan
| | - M Kakishita
- Higashi Takarazuka Satoh Hospital, Department of Cardiology, Takarazuka, Japan
| | - M Ibuki
- Higashi Takarazuka Satoh Hospital, Department of Cardiology, Takarazuka, Japan
| | - N Nagayama
- Higashi Takarazuka Satoh Hospital, Department of Cardiology, Takarazuka, Japan
| | - Y Higashino
- Higashi Takarazuka Satoh Hospital, Department of Cardiology, Takarazuka, Japan
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3
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Yamamoto W, Fujii K, Otsuji S, Takiuchi S, Kakishita M, Ibuki M, Hasegawa K, Nagayama S, Ishibuchi K, Tamaru H, Ishii R, Nakabayashi S, Higashino Y. P2766Qualitative and quantitative assessment of in-stent restenosis lesions after balloon dilation by optical coherence tomography. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- W Yamamoto
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - K Fujii
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - S Otsuji
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - S Takiuchi
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - M Kakishita
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - M Ibuki
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - K Hasegawa
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - S Nagayama
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - K Ishibuchi
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - H Tamaru
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - R Ishii
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - S Nakabayashi
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
| | - Y Higashino
- Higashi Takarazuka Satoh Hospital, cardiology, Takarazuka, Japan
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Ishibuchi K, Fujii K, Otsuji S, Takiuchi S, Ibuki M, Kakishita M, Hasegawa K, Nagayama S, Tamaru H, Ishii R, Nakabayashi S, Yamamoto W, Higashino Y. P5590The incidence and clinical impact of peri-stent contrast staining after first, second, and third-generation drug-eluding stent implantation. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p5590] [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: 11/12/2022] Open
Affiliation(s)
- K Ishibuchi
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - K Fujii
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - S Otsuji
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - S Takiuchi
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - M Ibuki
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - M Kakishita
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - K Hasegawa
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - S Nagayama
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - H Tamaru
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - R Ishii
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - S Nakabayashi
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - W Yamamoto
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
| | - Y Higashino
- Higashi Takarazuka Satoh Hospital, Cardiology, Takarazuka, Japan
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Kotoku J, Kumagai S, Nakabayashi S, Haga A, Kobayashi T. SU-G-JeP4-03: Anomaly Detection of Respiratory Motion by Use of Singular Spectrum Analysis. Med Phys 2016. [DOI: 10.1118/1.4957113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Kotoku J, Kumagai S, Haga A, Nakabayashi S, Arai N, Kobayashi T. TU-F-CAMPUS-J-03: Prediction of Respiratory Motion Using State Space Models. Med Phys 2015. [DOI: 10.1118/1.4925793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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7
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Hasegawa M, Miyata K, Abe Y, Ishii T, Ishigami T, Ohtani K, Nagai E, Ohyama T, Umekawa Y, Nakabayashi S. 3-T MRI safety assessments of magnetic dental attachments and castable magnetic alloys. Dentomaxillofac Radiol 2015; 44:20150011. [PMID: 25785821 DOI: 10.1259/dmfr.20150011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES To assess the safety of different magnetic dental attachments during 3-T MRI according to the American Society for Testing and Materials F2182-09 and F2052-06e1 standard testing methods and to develop a method to determine MRI compatibility by measuring magnetically induced torque. METHODS The temperature elevations, magnetically induced forces and torques of a ferromagnetic stainless steel keeper, a coping comprising a keeper and a cast magnetic alloy coping were measured on MRI systems. RESULTS The coping comprising a keeper demonstrated the maximum temperature increase (1.42 °C) for the whole-body-averaged specific absorption rate and was calculated as 2.1 W kg⁻¹ with the saline phantom. All deflection angles exceeded 45°. The cast magnetic alloy coping had the greatest deflection force (0.33 N) during 3-T MRI and torque (1.015 mN m) during 0.3-T MRI. CONCLUSIONS The tested devices showed minimal radiofrequency (RF)-induced heating in a 3-T MR environment, but the cast magnetic alloy coping showed a magnetically induced deflection force and torque approximately eight times that of the keepers. For safety, magnetic dental attachments should be inspected before and after MRI and large prostheses containing cast magnetic alloy should be removed. Although magnetic dental attachments may pose no great risk of RF-induced heating or magnetically induced torque during 3-T MRI, their magnetically induced deflection forces tended to exceed acceptable limits. Therefore, the inspection of such devices before and after MRI is important for patient safety.
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Affiliation(s)
- M Hasegawa
- 1 Department of Partial Denture Prosthodontics, Nihon University School of Dentistry, Tokyo, Japan
| | - K Miyata
- 1 Department of Partial Denture Prosthodontics, Nihon University School of Dentistry, Tokyo, Japan
| | - Y Abe
- 1 Department of Partial Denture Prosthodontics, Nihon University School of Dentistry, Tokyo, Japan
| | - T Ishii
- 1 Department of Partial Denture Prosthodontics, Nihon University School of Dentistry, Tokyo, Japan
| | - T Ishigami
- 1 Department of Partial Denture Prosthodontics, Nihon University School of Dentistry, Tokyo, Japan.,2 Division of Clinical Research, Nihon University School of Dentistry, Tokyo, Japan
| | - K Ohtani
- 1 Department of Partial Denture Prosthodontics, Nihon University School of Dentistry, Tokyo, Japan.,2 Division of Clinical Research, Nihon University School of Dentistry, Tokyo, Japan
| | - E Nagai
- 1 Department of Partial Denture Prosthodontics, Nihon University School of Dentistry, Tokyo, Japan.,2 Division of Clinical Research, Nihon University School of Dentistry, Tokyo, Japan
| | - T Ohyama
- 1 Department of Partial Denture Prosthodontics, Nihon University School of Dentistry, Tokyo, Japan.,2 Division of Clinical Research, Nihon University School of Dentistry, Tokyo, Japan
| | - Y Umekawa
- 1 Department of Partial Denture Prosthodontics, Nihon University School of Dentistry, Tokyo, Japan.,2 Division of Clinical Research, Nihon University School of Dentistry, Tokyo, Japan
| | - S Nakabayashi
- 1 Department of Partial Denture Prosthodontics, Nihon University School of Dentistry, Tokyo, Japan.,2 Division of Clinical Research, Nihon University School of Dentistry, Tokyo, Japan
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Kotoku J, Nakabayashi S, Haga A, Kumagai S, Ishibashi T, Arai N, Saotome N, Kobayashi T. SU-E-J-128: 3D Surface Reconstruction of a Patient Using Epipolar Geometry. Med Phys 2014. [DOI: 10.1118/1.4888180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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9
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Munetsuna E, Kawanami R, Nishikawa M, Ikeda S, Nakabayashi S, Yasuda K, Ohta M, Kamakura M, Ikushiro S, Sakaki T. Anti-proliferative activity of 25-hydroxyvitamin D3 in human prostate cells. Mol Cell Endocrinol 2014; 382:960-70. [PMID: 24291609 DOI: 10.1016/j.mce.2013.11.014] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [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] [Received: 04/08/2013] [Revised: 11/19/2013] [Accepted: 11/20/2013] [Indexed: 11/17/2022]
Abstract
1α-Hydroxylation of 25-hydroxyvitamin D3 is believed to be essential for its biological effects. In this study, we evaluated the biological activity of 25(OH)D3 itself comparing with the effect of cell-derived 1α,25-dihydroxyvitamin D3 (1α,25(OH)2D3). First, we measured the cell-derived 1α,25(OH)2D3 level in immortalized human prostate cell (PZ-HPV-7) using [(3)H]-25(OH)D3. The effects of the cell-derived 1α,25(OH)2D3 on vitamin D3 24-hydroxylase (CYP24A1) mRNA level and the cell growth inhibition were significantly lower than the effects of 25(OH)D3 itself added to cell culture. 25-Hydroxyvitamin D3 1α-hydroxylase (CYP27B1) gene knockdown had no significant effects on the 25(OH)D3-dependent effects, whereas vitamin D receptor (VDR) gene knockdown resulted in a significant decrease in the 25(OH)D3-dependent effects. These results strongly suggest that 25(OH)D3 can directly bind to VDR and exerts its biological functions. DNA microarray and real-time RT-PCR analyses suggest that semaphorin 3B, cystatin E/M, and cystatin D may be involved in the antiproliferative effect of 25(OH)D3.
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Affiliation(s)
- Eiji Munetsuna
- Department of Biotechnology, Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan; Department of Biochemistry, Fujita Health University for Medical Science, Toyoake 470-1192, Japan
| | - Rie Kawanami
- Department of Biotechnology, Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Miyu Nishikawa
- Department of Biotechnology, Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Shinnosuke Ikeda
- Department of Biotechnology, Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Sachie Nakabayashi
- Department of Biotechnology, Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Kaori Yasuda
- Department of Biotechnology, Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Miho Ohta
- Development Nourishment Department, Soai University, 4-4-1 Nankonaka, Suminoe, Osaka 559-0033, Japan
| | - Masaki Kamakura
- Department of Biotechnology, Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Shinichi Ikushiro
- Department of Biotechnology, Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Toshiyuki Sakaki
- Department of Biotechnology, Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan.
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Abstract
Electrochemically formed hydrogen nanobubbles at a platinum rotating disk electrode (RDE) were detected by re-oxidation charge. The dissolution time course of the hydrogen nanobubbles was measured by AFM tapping topography under open-circuit conditions at stationary platinum and gold single-crystal electrodes. The bubble dissolution at platinum was much faster than that at gold because two types of diffusion, bulk and surface diffusion, proceeded at the platinum surface, whereas surface diffusion was prohibited at the gold electrode. These findings indicated that the electrochemical reaction of normal hydrogen electrode partly proceeded heterogeneously on the three-phase boundary around the hydrogen nanobubble.
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Affiliation(s)
- S Nakabayashi
- Department of Chemistry, Faculty of Science, Saitama University, Sakura-ku, Shimo-okubo, 225, Saitama 338-8570, Japan
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11
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Abstract
Electrochemically formed hydrogen nanobubbles at a platinum rotating disk electrode (RDE) were detected by re-oxidation charge. The dissolution time course of the hydrogen nanobubbles was measured by AFM tapping topography under open-circuit conditions at stationary platinum and gold single-crystal electrodes. The bubble dissolution at platinum was much faster than that at gold because two types of diffusion, bulk and surface diffusion, proceeded at the platinum surface, whereas surface diffusion was prohibited at the gold electrode. These findings indicated that the electrochemical reaction of normal hydrogen electrode partly proceeded heterogeneously on the three-phase boundary around the hydrogen nanobubble.
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Affiliation(s)
- S Nakabayashi
- Department of Chemistry, Faculty of Science, Saitama University, Sakura-ku, Shimo-okubo, 225, Saitama 338-8570, Japan
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Munetsuna E, Nakabayashi S, Kawanami R, Yasuda K, Ohta M, Arai MA, Kittaka A, Chen TC, Kamakura M, Ikushiro S, Sakaki T. Mechanism of the anti-proliferative action of 25-hydroxy-19-nor-vitamin D(3) in human prostate cells. J Mol Endocrinol 2011; 47:209-18. [PMID: 21693624 DOI: 10.1530/jme-11-0008] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [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: 01/10/2023]
Abstract
According to the prevailing paradigm, 1α-hydroxylation of 25-hydroxyvitamin D(3) (25(OH)D(3)) and its analogs is a pre-requisite step for their biological effects. We previously reported that 25-hydroxy-19-nor-vitamin D(3) (25(OH)-19-nor-D(3)) had anti-proliferative activity in a cell line, PZ-HPV-7, which was derived from human non-cancerous prostate tissue, and suggested that 25(OH)-19-nor-D(3) acted after 1α-hydroxylation by vitamin D 1α-hydroxylase (CYP27B1). However, metabolic studies of 25(OH)-19-nor-D(3) using recombinant CYP27B1 revealed that 25(OH)-19-nor-D(3) was rarely subjected to 1α-hydroxylation. Therefore, in this report, we attempted to clarify the mechanism of 25(OH)-19-nor-D(3) action in intact cells using PZ-HPV-7 prostate cells. After incubating the cells with 25(OH)-19-nor-D(3), eight metabolites of 24-hydroxylase (CYP24A1) were detected, whereas no products of CYP27B1 including 1α,25-dihydroxy-19-nor-vitamin D(3) (1α,25(OH)(2)-19-nor-D(3)) were found. Furthermore, the time-dependent nuclear translocation of vitamin D receptor (VDR) and the subsequent transactivation of cyp24A1 gene in the presence of 25(OH)-19-nor-D(3) were almost identical as those induced by 1α,25(OH)(2)-19-nor-D(3). These results strongly suggest that 25(OH)-19-nor-D(3) directly binds to VDR as a ligand and transports VDR into the nucleus to induce transcription of cyp24A1 gene. In addition, knock down of cyp27B1 gene did not affect the anti-proliferative activity of 25(OH)-19-nor-D(3), whereas knock down of VDR attenuated the inhibitory effect. Thus, our results clearly demonstrate that the anti-proliferative activity of 25(OH)-19-nor-D(3) is VDR dependent but 1α-hydroxylation independent, suggesting that 25(OH)D(3) analogs such as 25(OH)-19-nor-D(3) could be attractive candidates for anticancer therapy.
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Affiliation(s)
- Eiji Munetsuna
- Department of Biotechnology, Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
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13
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Flanagan JN, Zheng S, Chiang KC, Kittaka A, Sakaki T, Nakabayashi S, Zhao X, Spanjaard RA, Persons KS, Mathieu JS, Holick MF, Chen TC. Evaluation of 19-nor-2alpha-(3-hydroxypropyl)-1alpha,25-dihydroxyvitamin D3 as a therapeutic agent for androgen-dependent prostate cancer. Anticancer Res 2009; 29:3547-3553. [PMID: 19667147] [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: 05/28/2023]
Abstract
The high incidence of prostate cancer and lack of an effective, long-term treatment for metastatic disease highlights the need for more potent non-calcemic vitamin D analogs as potential alternative or combinational prostate cancer therapies. Among the analogs, 19-nor-1alpha,25-dihydroxyvitamin D2 (19-nor-1alpha,25(OH)2D2) known as paricalcitol or Zempler, has less calcemic effects and an equipotential activity as 1alpha,25-dihydroxyvitamin D3 (1alpha,25(OH)2D3) in several in vivo and in vitro systems. It was recently demonstrated that a modified analog of paricalcitol, 19-nor-2alpha-(3-hydroxypropyl)-1alpha,25-dihydroxyvitamin D3 (MART-10) compared to 1alpha,25(OH)2D3 was more effective in inhibiting proliferation of an immortalized normal prostate cell line (PZ-HPV-7) (1,000-fold) and invasion of PC-3 prostate cancer cells (10-fold). In this study, the effects of MART-10 and 1alpha,25(OH)2D3 on proliferation, vitamin D receptor transactivation, vitamin D-binding protein (DBP) binding, CYP24A1 (24-OHase) substrate hydroxylation kinetics, and induction of CYP24A1 gene expression were compared in an androgen-dependent prostate cancer cell model, LNCaP. The results demonstrated that MART-10 was 1,000-fold more active than 1alpha,25(OH)2D3 in inhibiting LNCaP cell proliferation. MART-10 was more active than 1alpha,25(OH)2D3 in up-regulating a vitamin D receptor-responsive Luciferase construct and inducing CYP24A1 gene expression in LNCaP prostate cancer cells. In addition, MART-10 has a lower affinity for DBP and less substrate degradation by CYP24A1 compared to 1alpha,25(OH)2D3, indicating that MART-10 has more bioavailability and a longer half-life. Thus, these data suggest that MART-10 may be a potential candidate as a therapeutic agent for prostate cancer, especially for patients who fail in conventional therapies.
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Affiliation(s)
- John N Flanagan
- Section of Endocrinology, Diabetes and Nutrition, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts, USA
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Urushino N, Nakabayashi S, Arai MA, Kittaka A, Chen TC, Yamamoto K, Hayashi K, Kato S, Ohta M, Kamakura M, Ikushiro S, Sakaki T. Kinetic Studies of 25-Hydroxy-19-nor-vitamin D3 and 1α,25-Dihydroxy-19-nor-vitamin D3 Hydroxylation by CYP27B1 and CYP24A1. Drug Metab Dispos 2007; 35:1482-8. [PMID: 17553915 DOI: 10.1124/dmd.107.015602] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Our previous study demonstrated that 25-hydroxy-19-nor-vitamin D(3) [25(OH)-19-nor-D(3)] inhibited the proliferation of immortalized noncancerous PZ-HPV-7 prostate cells similar to 1 alpha,25-dihydroxyvitamin D(3) [1 alpha,25(OH)(2)D(3)], suggesting that 25(OH)-19-nor-D(3) might be converted to 1 alpha,25-dihydroxy-19-nor-vitamin D(3) [1 alpha,25(OH)(2)-19-nor-D(3)] by CYP27B1 before exerting its antiproliferative activity. Using an in vitro cell-free model to study the kinetics of CYP27B1-dependent 1 alpha-hydroxylation of 25(OH)-19-nor-D(3) and 25-hydroxyvitamin D(3) [25(OH)D(3)] and CYP24A1-dependent hydroxylation of 1 alpha,25(OH)-19-nor-D(3) and 1 alpha,25(OH)(2)D(3), we found that k(cat)/K(m) for 1 alpha-hydroxylation of 25(OH)-19-nor-D(3) was less than 0.1% of that for 25(OH)D(3), and the k(cat)/K(m) value for 24-hydroxylation was not significantly different between 1 alpha,25(OH)(2)-19-nor-D(3) and 1 alpha,25(OH)(2)D(3). The data suggest a much slower formation and a similar rate of degradation of 1 alpha,25(OH)(2)-19-nor-D(3) compared with 1 alpha,25(OH)(2)D(3). We then analyzed the metabolites of 25(OH)D(3) and 25(OH)-19-nor-D(3) in PZ-HPV-7 cells by high-performance liquid chromatography. We found that a peak that comigrated with 1 alpha,25(OH)(2)D(3) was detected in cells incubated with 25(OH)D(3), whereas no 1 alpha,25(OH)(2)-19-nor-D(3) was detected in cells incubated with 25(OH)-19-nor-D(3). Thus, the present results do not support our previous hypothesis that 25(OH)-19-nor-D(3) is converted to 1 alpha,25(OH)(2)-19-nor-D(3) by CYP27B1 in prostate cells to inhibit cell proliferation. We hypothesize that 25(OH)-19-nor-D(3) by itself may have a novel mechanism to activate vitamin D receptor or it is metabolized in prostate cells to an unknown metabolite with antiproliferative activity without 1 alpha-hydroxylation. Thus, the results suggest that 25(OH)-19-nor-D(3) has potential as an attractive agent for prostate cancer therapy.
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Affiliation(s)
- Naoko Urushino
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kitashirakawa, Oiwake-cho, Sakyo-ku, Kyoto, Japan
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Nomura T, Hidai C, Nakabayashi S. 2P238 The changes of energy metabolism during the formation of multicellular structure in Dictyostelium discoideum. ACTA ACUST UNITED AC 2005. [DOI: 10.2142/biophys.45.s179_2] [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: 12/01/2022]
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16
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Mishina E, Tamura T, Sakaguchi H, Kulyuk L, Nakabayashi S. Photoluminescence studies of oligothiophene self-assembled monolayers at low excitation energy. J Chem Phys 2004; 120:9763-8. [PMID: 15267992 DOI: 10.1063/1.1688315] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Photoluminescence spectroscopy studies have been performed on self-assembled monolayers (SAMs) on Au(111) of thiophene oligomers with the number of thiophen rings N=3 and N=4. Photoluminescence spectra of SAMs reveal excitonic behavior with different band resolution and temperature dependence. These differences are attributed to different SAMs structure (degree of ordering).
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Affiliation(s)
- E Mishina
- Department of Chemistry, Faculty of Science, Saitama University, 255 Shimo-okubo, Saitama, 338-8570, Japan.
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17
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Karantonis A, Pagitsas M, Miyakita Y, Nakabayashi S. In-Phase, Anti-Phase and Fractured Synchrony in Ring Networks of Coupled Relaxation Electrochemical Oscillators. J Phys Chem B 2004. [DOI: 10.1021/jp049767u] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- A. Karantonis
- Department of Materials Science and Engineering, School of Chemical Engineering, National Technical University of Athens, Zografou 15780, Athens, Greece, Department of Chemistry, Faculty of Science, Aristotle University of Thessaloniki, Thessaloniki 54006, Greece, and Department of Chemistry, Faculty of Science, Saitama University, Saitama 338-8570, Japan
| | - M. Pagitsas
- Department of Materials Science and Engineering, School of Chemical Engineering, National Technical University of Athens, Zografou 15780, Athens, Greece, Department of Chemistry, Faculty of Science, Aristotle University of Thessaloniki, Thessaloniki 54006, Greece, and Department of Chemistry, Faculty of Science, Saitama University, Saitama 338-8570, Japan
| | - Y. Miyakita
- Department of Materials Science and Engineering, School of Chemical Engineering, National Technical University of Athens, Zografou 15780, Athens, Greece, Department of Chemistry, Faculty of Science, Aristotle University of Thessaloniki, Thessaloniki 54006, Greece, and Department of Chemistry, Faculty of Science, Saitama University, Saitama 338-8570, Japan
| | - S. Nakabayashi
- Department of Materials Science and Engineering, School of Chemical Engineering, National Technical University of Athens, Zografou 15780, Athens, Greece, Department of Chemistry, Faculty of Science, Aristotle University of Thessaloniki, Thessaloniki 54006, Greece, and Department of Chemistry, Faculty of Science, Saitama University, Saitama 338-8570, Japan
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Karantonis A, Pagitsas M, Miyakita Y, Nakabayashi S. From Excitatory to Inhibitory Connections in Networks of Discrete Electrochemical Oscillators. J Phys Chem B 2003. [DOI: 10.1021/jp036595c] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- A. Karantonis
- Department of Materials Science and Engineering, School of Chemical Engineering, National Technical University of Athens, Zografou 15780, Athens, Greece, Department of Chemistry, Faculty of Science, Aristotle University of Thessaloniki, Thessaloniki 54006, Greece, and Department of Chemistry, Faculty of Science, Saitama University, Saitama 338-8570, Japan
| | - M. Pagitsas
- Department of Materials Science and Engineering, School of Chemical Engineering, National Technical University of Athens, Zografou 15780, Athens, Greece, Department of Chemistry, Faculty of Science, Aristotle University of Thessaloniki, Thessaloniki 54006, Greece, and Department of Chemistry, Faculty of Science, Saitama University, Saitama 338-8570, Japan
| | - Y. Miyakita
- Department of Materials Science and Engineering, School of Chemical Engineering, National Technical University of Athens, Zografou 15780, Athens, Greece, Department of Chemistry, Faculty of Science, Aristotle University of Thessaloniki, Thessaloniki 54006, Greece, and Department of Chemistry, Faculty of Science, Saitama University, Saitama 338-8570, Japan
| | - S. Nakabayashi
- Department of Materials Science and Engineering, School of Chemical Engineering, National Technical University of Athens, Zografou 15780, Athens, Greece, Department of Chemistry, Faculty of Science, Aristotle University of Thessaloniki, Thessaloniki 54006, Greece, and Department of Chemistry, Faculty of Science, Saitama University, Saitama 338-8570, Japan
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Mishina E, Miyakita Y, Yu QK, Nakabayashi S, Sakaguchi H. Nonlinear optical properties of oligothiophene self-assembled monolayers on gold substrate. J Chem Phys 2002. [DOI: 10.1063/1.1494420] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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20
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Nakabayashi S, Amemiya T, Kira A. Flat-band potential shift in a dye-sensitized zinc-oxide electrode on pulse excitation. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100184a045] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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21
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Affiliation(s)
- N. Ohta
- Department of Chemistry, Faculty of Science, Saitama University, 255 Shimo-ohkubo, Urawa, Saitama 338-8570, Japan
| | - Q.-K. Yu
- Department of Chemistry, Faculty of Science, Saitama University, 255 Shimo-ohkubo, Urawa, Saitama 338-8570, Japan
| | - S. Nakabayashi
- Department of Chemistry, Faculty of Science, Saitama University, 255 Shimo-ohkubo, Urawa, Saitama 338-8570, Japan
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22
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Baba R, Shiomi Y, Nakabayashi S. Spatiotemporal reaction propagation of electrochemically controlled non-linear iron current oscillator. Chem Eng Sci 2000. [DOI: 10.1016/s0009-2509(99)00315-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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24
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Watanabe Y, Suzuki H, Suzuki K, Ando T, Nakabayashi S, Sugiyama Y. Detection of the membrane protein recognized by the kidney-specific alkylglucoside vector. Pharm Res 2000; 17:49-54. [PMID: 10714608 DOI: 10.1023/a:1007566408323] [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: 12/17/2022]
Abstract
PURPOSE Previously, we suggested that alkylglucoside can be an effective vector for renal-specific drug delivery (Suzuki et al., J. Pharmacol. Exp. Ther, 288:57-61, 1999). The purpose of the present study is to characterize the membrane protein which is recognized by this alkylglucoside. METHODS The binding of [125I] tyrosine conjugated with a octylthioglucoside (Glc-S-C8-[125I]Tyr) Glc-S-C8-[125I]Tyr to crude membrane fractions of kidney was determined. In addition, the membrane was cross-linked with this alkylglucoside and examined by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. RESULTS Glc-S-C8-[125I]Tyr was shown to have a specific binding site on the kidney membrane (Kd = 931 nM and Bmax = 987 pmol/mg protein). Cross-linking of the membrane with Glc-S-C8-[125I]Tyr resulted in the detection of a protein (Mr = 62,000), which was unaffected by reducing agents. The results of this cross-linking study were consistent with previous information on its localization and binding characteristics. CONCLUSIONS The kidney membrane protein, to which alkylglucoside binds in a specific manner, has a molecular weight of 62,000. Crosslinking is a useful tool for detecting this novel membrane protein in kidney.
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Affiliation(s)
- Y Watanabe
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Japan
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25
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Abstract
PURPOSE We have previously shown Glc-S-C7-Me (octyl beta-D-thioglucoside) exhibits renal targeting potential in vivo in addition to its specific binding to the renal membrane fraction in vitro. Thus, "alkylglycoside" is considered to be a novel targeting vector for the kidney (1,2). The present study is designed to clarify the structural requirements for alkylglycoside as a renal targeting vector. METHODS Inhibitory effects of various sugars and glycosides on 3H-Glc-S-C7-Me binding to the kidney membrane fraction were evaluated by a centrifugation method. RESULTS As far as the sugar moiety is concerned, no other sugars except D-aldohexose and D-aldohexose derivatives (containing F, S, and N) showed greater inhibition than D-glucose. Therefore, octylthio derivatives of various D-aldohexose were prepared and their inhibitory effects were investigated. The following findings were obtained: Equatorial OH at 4 position is essential; OH at 2 position can have either orientation or be deleted. As far as the alkyl moiety is concerned, the length, branching and electrical environment in the region of the glycoside bond are important; aromatic structures can substitute for the alkyl portion; the preferred glycoside bonding atom is as follows: S > NH > O. CONCLUSIONS The structural requirements for the renal targeting vector have been identified to be as follows: a hydrophobic group (alkyl chain or aromatic ring) should be introduced to a sugar (D-glucose, D-mannose, or 2-deoxy-D-glucose) via a beta-glycoside binding atom (S > NH > O).
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Affiliation(s)
- K Suzuki
- Pharmaceutical Research Center, Meiji Seika Kaisha, LTD., Yokohama-shi, Kanagawa, Japan.
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Nakabayashi S, Inokuma K, Karantonis A. Magnetic effect for electrochemically driven cellular convection. Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics 1999; 59:6599-608. [PMID: 11969648 DOI: 10.1103/physreve.59.6599] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/1998] [Indexed: 11/07/2022]
Abstract
Hydrodynamic instability analogous to Rayleigh-Bénard convection is observed in an electrolytic solution between two parallel copper wire electrodes. The laser interferometric technique can reveal the dissipation structure created by the motion of the fluid, which is controlled electrochemically. It is shown that under the presence of horizontal magnetic field the roll cells move horizontally along the electrodes. The electrochemically driven convection is simply controlled and monitored by setting and measuring the electrochemical parameters and forms many kinds of spatiotemporal patterns, especially under the magnetic field. The phenomenon is modeled by considering a Boussinesq fluid under a concentration gradient. The stability of the resulting equations is studied by linear stability analysis. The time dependent nonlinear system is investigated numerically and the main features of the experimental response are reproduced.
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Affiliation(s)
- S Nakabayashi
- Department of Chemistry, Faculty of Science, Saitama University, Urawa, Saitama 338-8570, Japan
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27
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Ikeda K, Tanno N, Tamura G, Suzuki H, Oshima T, Shimomura A, Nakabayashi S, Takasaka T. Endoscopic sinus surgery improves pulmonary function in patients with asthma associated with chronic sinusitis. Ann Otol Rhinol Laryngol 1999; 108:355-9. [PMID: 10214782 DOI: 10.1177/000348949910800407] [Citation(s) in RCA: 90] [Impact Index Per Article: 3.6] [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: 02/06/2023]
Abstract
We evaluated the clinical efficacy of endonasal endoscopic sinus surgery (ESS) in patients with asthma associated with chronic sinusitis. Twenty-one patients (13 men and 8 women) from 27 to 72 years old were enrolled in this study. All patients had had sinus-related symptoms for more than 3 months and had computed tomographic evidence of paranasal sinus opacification. Fifteen patients underwent bilateral endonasal ESS under local anesthesia, and 6 other patients without surgery were controls. The sinus-related symptoms of the preoperative and postoperative periods were assessed via a questionnaire. The period 6 months prior to surgery was compared with that 6 months postoperatively with regard to peak expiratory flow and total dosage of systemic glucocorticoids. Sinus-related symptoms in the ESS group were significantly improved 6 months postoperatively. The average peak expiratory flow 6 months following surgery was improved in the ESS patients, ranging from 40 to 190 L/min. Seven patients showed a reduction in the need for corticosteroids, whereas 2 patients were unchanged and 2 patients required larger dosages. The remaining 4 patients needed no corticosteroids before or after ESS. No significant changes in sinus-related symptoms or peak expiratory flow were obtained for the control group. Improvement of paranasal sinus disease by successful ESS can alleviate pulmonary dysfunction in asthma associated with chronic sinusitis. We believe that adequate and positive treatment for chronic sinusitis would reduce not only the nasal and sinus-related symptoms evoked by chronic sinusitis, but also some of the signs induced by asthma.
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Affiliation(s)
- K Ikeda
- Department of Otorhinolaryngology, Tohoku University School of Medicine, Sendai, Japan
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Nakatsuka S, Suzuki N, Nakabayashi S, Koiwa T, Takasaka T. [Prediction about daily scattering count of Japanese cedar pollen]. Nihon Jibiinkoka Gakkai Kaiho 1999; 102:58-65. [PMID: 10067322 DOI: 10.3950/jibiinkoka.102.58] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
We investigated the relationship between the daily count of pollen scattered, the count of days during the scattering period and the highest temperature during the sugi (Japanese cedar) pollen scattering season from 1983 to 1997, and whether prediction of the count of pollen scattered for the following day is possible. Our studies clearly demonstrated that the count of sugi pollen scattered is small in the early period of the scattering season with some daily variations in amount; this cycle is repeated for several days in the middle period of the season then decreases again in the late period. These findings showed that both the cumulative value of the count of pollen scattered daily and the total count of pollen scattered formed an S-shaped curve when compared with the count of days after the start of the scattering season and the cumulative highest temperature for the season. Predicting the daily count of pollen scattered after the start of the scattering season against the cumulative highest temperature is possible by drawing a regression curve from the S-shaped curve. Also, a regression curve was useful in predicting the total count of pollen scattered during the season from the cumulative count of pollen scattered 10 to 20 days after the start of the scattering season. Using these data, we were able to improve the accuracy for predicting the scattering of sugi pollen.
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Affiliation(s)
- S Nakatsuka
- Department of Otolaryngology, Tohoku University School of Medicine, Sendai
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Asada Y, Suzuki H, Nakabayashi S, Furukawa M. [High-dose steroid therapy for sudden deafness--efficacy in severe cases]. Nihon Jibiinkoka Gakkai Kaiho 1998; 101:1069-74. [PMID: 9796271] [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: 02/09/2023]
Abstract
We studied the efficacy of high-dose steroid therapy for severe sudden deafness, and evaluated various factors that affect hearing recovery; i.e., severity of hearing loss, age, presence of vertigo and time to the beginning treatment. Twenty-eight patients with idiopathic sudden sensorineural hearing loss whose hearing levels were 60 dB or more were analyzed. They were given 200 mg of prednisolone per day intravenously according to Stennert's method. Hearing recovery was assessed by the criteria of the Sudden Deafness Research Group of the Japanese Ministry of Health and Welfare. The overall recovery rate and cure rate were 50% and 14%, respectively. Patients whose initial hearing levels were within 90 dB showed a significantly higher cure rate than those with above 90 dB (36% (n = 11) vs 0% (n = 17), p < 0.05). The cure rate was significantly higher in the vertigo (-)-group than in the vertigo (+)-group (40% (n = 10) vs 0% (n = 18), p < 0.02). The cure rate was also higher in patients under 50 years of age who were treated within 7 days after onset than in the others (31% (n = 13) vs 0% (n = 15), p < 0.05). The recovery rate was higher when patients were under 50 years of age (63% vs 33%), treated within 7 days after onset (56% vs 42%), or had an initial hearing level within 90 dB (55% vs 47%); however, the differences were not statistically significant. We conclude that these prognostic factors are important for predicting the hearing recovery of patients with severe sudden deafness who undergo high-dose steroid therapy and, therefore, for determining whether this therapy is indicated.
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Affiliation(s)
- Y Asada
- Department of Otolaryngology, Sendai National Hospital
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Abstract
We present a 73-year-old female with an enlarged mass in the right parotid gland. Fine-needle aspiration cytology suggested pleomorphic adenoma. Diagnostic imaging revealed that the tumour had a well-defined margin arising from the deep lobe of the parotid gland. A total parotidectomy with preservation of the facial nerve was performed. The final histopathological diagnosis including immunohistochemical studies was basal cell adenocarcinoma, which is a recently defined entity and a rare epithelial neoplasm. No sign of local recurrence or metastasis 24 months postoperatively has been observed.
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Affiliation(s)
- K Ikeda
- Department of Otorhinolaryngology, Tohoku University School of Medicine, Sendai, Japan.
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Nakabayashi S, Krastev I, Aogaki R, Inokuma K. Electrochemical instability of Ag/Sb co-deposition coupled with a magnetohydrodynamic flow. Chem Phys Lett 1998. [DOI: 10.1016/s0009-2614(98)00858-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.0] [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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Shimomura A, Ikeda K, Suzuki H, Nakabayashi S, Oshima T, Furukawa M, Takasaka T, Ando N, Ohtani H, Nagura H. Expression of adhesion molecules in nonallergic chronic sinusitis. Laryngoscope 1997; 107:1519-24. [PMID: 9369401 DOI: 10.1097/00005537-199711000-00018] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Endothelial and epithelial adhesion molecules are important in the recruitment of leukocytes to inflammatory sites. To determine the relationship between recruited leukocytes and adhesion molecules in the paranasal sinus mucosa of nonallergic chronic sinusitis, we surgically obtained mucosa from 16 patients and identified the expression of intercellular adhesion molecules (ICAM-1), vascular cell adhesion molecule-1 (VCAM-1), E-selectin, and P-selectin by immunohistochemistry. Neutrophils were significantly dominant in the nasal discharge as compared with eosinophils. The degree of neutrophil infiltration in the paranasal sinus mucosa was prominent in both intraepithelial and subepithelial areas as compared with the lamina propria. In each tissue site, the degree of infiltration of neutrophils was similar to that of eosinophils. These findings suggest that the tissue neutrophils actively and rapidly migrated into the lumen. All the adhesion molecules except VCAM-1 were expressed in the vascular endothelial cells. On the other hand, the surface epithelial cells showed the expression of only ICAM-1. The expression of ICAM-1 on the endothelial cells correlated with the degree of neutrophil infiltration in the mucosa The eosinophil infiltration was not dependent on any adhesion molecules examined here. It was concluded that ICAM-1 expression in the mucosa may be involved in neutrophil recruitment and may contribute to the establishment of the inflammatory cell distribution in the paranasal sinus of nonallergic chronic sinusitis.
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Affiliation(s)
- A Shimomura
- Department of Otorhinolaryngology, Tohoku University School of Medicine, Sendai, Japan
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Ikeda K, Suzuki H, Oshima T, Shimomura A, Nakabayashi S, Takasaka T. Endonasal endoscopic management in fibrous dysplasia of the paranasal sinuses. Am J Otolaryngol 1997; 18:415-8. [PMID: 9395020 DOI: 10.1016/s0196-0709(97)90064-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- K Ikeda
- Department of Otorhinolaryngology, Tohoku University School of Medicine, Sendai, Japan
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Yamashiki M, Nishimura A, Nobori T, Nakabayashi S, Takagi T, Inoue K, Ito M, Matsushita K, Ohtaki H, Kosaka Y. In vitro effects of sho-saiko-to on production of granulocyte colony-stimulating factor by mononuclear cells from patients with chronic hepatitis C. Int J Immunopharmacol 1997; 19:381-5. [PMID: 9568542 DOI: 10.1016/s0192-0561(97)00064-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
During the past 2 years, drug-induced interstitial pneumonia was reported in 66 Japanese patients, mainly among chronic hepatitis C patients, undergoing treatment with the Japanese herbal medicine "Sho-saiko-to" (TJ-9). As interstitial pneumonia is also induced by granulocyte colony-stimulating factor (G-CSF), we examined the effects of TJ-9 on G-CSF production in peripheral blood mononuclear cells. In patients with hepatitis B or C, G-CSF production in the absence of any stimulation was significantly lower than healthy controls (p < 0.01). G-CSF production increased along with the increase of TJ-9 levels, and this could induce excessive production of G-CSF in hepatitis C patients, and this may be a cause of interstitial pneumonia.
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Affiliation(s)
- M Yamashiki
- Department of Laboratory Medicine, Mie University School of Medicine, Tsu, Japan
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Ikeda K, Kudo T, Shimomura A, Oshima T, Suzuki N, Kakehata S, Nakabayashi S, Yamauchi D, Takasaka T. A case of leiomyosarcoma of the sphenoid sinus. TOHOKU J EXP MED 1997; 182:265-70. [PMID: 9362110 DOI: 10.1620/tjem.182.265] [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: 02/05/2023]
Abstract
A 43-year-old man with a primary leiomyosarcoma of the left sphenoid sinus is presented. To our knowledge, this is an unusual case of leiomyosarcoma, which has never been reported in the literature. Accurate and safe diagnosis was obtained by an endonasal endoscopic approach with minimal tissue invasion.
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Affiliation(s)
- K Ikeda
- Department of Otorhinolaryngology, Tohoku University School of Medicine, Sendai, Japan.
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Suzuki N, Nakabayashi S, Nakatsuka S, Takasaka T. [Immunohistological study of infiltrating cells in nasal mucosa and nasal lavage fluid of perennial allergic rhinitis]. Nihon Jibiinkoka Gakkai Kaiho 1997; 100:20-6. [PMID: 9038072 DOI: 10.3950/jibiinkoka.100.20] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
It is well known that EG2-positive cells, CD68-positive cells and other inflammatory cells significantly increase after antigen provocation in the nasal mucosa of an allergic patient. However, there are few reports of the immunohistological study if the infiltrating cells in nasal lavage fluid are not seen. In this study, the infiltrating cells in nasal mucosa as well as in nasal lavage fluid were immunohistologically examined by means of monoclonal antibodies 30 minutes after the antigen provocation. Seven patients with perennial allergic rhinitis were challenged by an antigen disk placed on one side of the inferior turbinates and each nasal cavity was irrigated separately 30 minutes after the antigen provocation. About seven days later, these patients were operated on and the nasal mucosa was removed 30 minutes after the antigen provocation. No marked change in CD4- and CD8 positive cells in the nasal mucosa and lavage fluid was found after provocation. On cytospin glass slides, there was a slight increase in the number of CD68 (P = 0.1), EG2 (P = 0.09), and neutrophil elastase positive (P = 0.2) cells. A significant increase in EG2-positive cells was also seen in the superficial layer of the lamina propria (P < 0.05) but not in the deep layer. CD22 positive cells were not seen on the cytospin glass slide, whereas many positive cells were observed in the deep layer of the lamina propria. These results indicate that EG2-positive cells participate strongly in the early phase of the allergic response after provocation in spite of the absence of significant changes in CD4- and CD8 positive cells. Immunohistological evaluation of nasal lavage is thought to be beneficial concerning the movement of each kind of cells. Each kind of cell is thought to fulfill the main physiological role in the epithelial layer or the lamina propria in early allergic inflammation.
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Affiliation(s)
- N Suzuki
- Department of Otolaryngology, Tohoku University, School of Medicine, Sendai
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Suzuki H, Takahashi Y, Wataya H, Ikeda K, Nakabayashi S, Shimomura A, Takasaka T. Mechanism of neutrophil recruitment induced by IL-8 in chronic sinusitis. J Allergy Clin Immunol 1996; 98:659-70. [PMID: 8828544 DOI: 10.1016/s0091-6749(96)70100-8] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.4] [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: 02/02/2023]
Abstract
BACKGROUND The mechanism of neutrophil recruitment in patients with chronic sinusitis is unclear. OBJECTIVE This study aims to elucidate the role of IL-8 in inducing neutrophil accumulation in the nasal discharge of patients with chronic sinusitis. METHODS Nasal discharge and mucosal specimens were obtained from two groups of patients, those with chronic sinusitis and those with allergic rhinitis. The samples were subjected to immunohistochemical examination and in situ hybridization. The IL-8 level in the nasal discharge was measured by enzyme immunoassay. RESULTS Immunoreactivity to IL-8 was observed in polymorphonuclear cells of nasal smear, in nasal gland duct cells, and in epithelial cells of the chronic sinusitis group; whereas those of the allergic rhinitis group mostly showed little or no reaction. Similar patterns of localization were shown by in situ hybridization for IL-8 messenger RNA. The IL-8 level in nasal discharge was significantly higher in the chronic sinusitis group than in the allergic rhinitis group. CONCLUSION These results suggest that chemotactic factors in sinus effusion, including IL-8 derived from nasal gland duct cells and epithelial cells, attract neutrophils out of mucosa, and the neutrophils that have emigrated into the sinus effusion secrete IL-8. This induces further neutrophil accumulation in the sinus effusion of patients with chronic sinusitis.
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Affiliation(s)
- H Suzuki
- Department of Otolaryngology, Tohoku University School of Medicine, Sendai, Japan
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Nakabayashi S, Suzuki N, Nakatsuka S, Ikeda K, Takasaka T, Inamura N. [The effect of initial treatment by FP aqueous nasal spray in patients with Japanese cedar pollinosis]. Nihon Jibiinkoka Gakkai Kaiho 1996; 99:1162-71. [PMID: 8914412 DOI: 10.3950/jibiinkoka.99.1162] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
It is well known that an initial treatment with several kinds of antiallergic medicines is useful for patients suffering from Japanese cedar pollinosis to reduce nasal symptoms during the pollen season. Also topical corticosteroids show a preventive effect as antiallergic medicines. In this study, the preventive effect of topical corticosteroids with antiallergic medicine as an initial treatment was evaluated during the 1995 cedar pollen season a season in which a high pollen count was anticipated. Twenty-five patients with cedar pollinosis were selected and divided into two groups. A and B, A topical corticosteroid (fluticasone propionate; Flunase) as well as antiallergic medicine (azelastin) were administered to patients in group A 4 weeks before the beginning of the pollen season. In group B, only antiallergic medicine was given at the same time as group A and a topical corticosteroid was administered after the appearance of the symptoms. Nasal symptoms and mucosal conditions of the nasal cavity were monitored throughout the pollen season. The inflammatory cells in the mucoepithelial layer of the nasal mucosa were also periodically evaluated by immunohistochemical staining. Nasal symptoms and mucosal conditions in group A were significantly improved compared with patients in group B. The infiltration of macrophages in the mucoepithelial layer of the nasal mucosa was strongly inhibited in group A. The numbers of mast cells and EG2-positive cells in group A were not significantly different from those in group B during the pollen season. According to these results, although not all inflammatory cells were inhibited, the initial treatment with Flunase aqueous nasal spray in addition to the conventional initial treatment with antiallergic medicine is very useful for reducing symptoms even in a season with a large amount of cedar pollen.
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Affiliation(s)
- S Nakabayashi
- Department of Otolaryngology, Tohoku University School of Medicine, Sendai
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Nakabayashi S, Sugiyama N, Yagi I, Uosaki K. Dissociative adsorption dynamics of formaldehyde on a platinum electrode surface; one-dimensional domino? Chem Phys 1996. [DOI: 10.1016/0301-0104(95)00408-4] [Citation(s) in RCA: 20] [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: 10/27/2022]
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Affiliation(s)
- S. Nakabayashi
- PRESTO, Research Development Corporation of Japan, and Physical Chemistry Laboratory, Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060, Japan
| | - M. Yanagida
- PRESTO, Research Development Corporation of Japan, and Physical Chemistry Laboratory, Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060, Japan
| | - K. Uosaki
- PRESTO, Research Development Corporation of Japan, and Physical Chemistry Laboratory, Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060, Japan
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Katano K, Ogino H, Iwamatsu K, Nakabayashi S, Yoshida T, Komiya I, Tsuruoka T, Inouye S, Kondo S. Synthesis and biological activity of (cyclopentenopyridinium) thiomethylcephalosporins. J Antibiot (Tokyo) 1990; 43:1150-9. [PMID: 2211377 DOI: 10.7164/antibiotics.43.1150] [Citation(s) in RCA: 4] [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: 12/30/2022]
Abstract
Substituted (cyclopentenopyridinium)thiomethyl groups were introduced as C-3 substituents of (6R,7R)-7-[(Z)-2-(2-aminothiazol-4-yl)-2-oxyimino]acetami docephalosporins. Structure-activity relationships of this class of cephalosporins are discussed on the basis of their MIC. The selected compounds, 3a and 4a (ME1221), having an acidic substituent, showed excellent in vivo efficacy and low toxicity.
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Affiliation(s)
- K Katano
- Pharmaceutical Research Center, Meiji Seika Kaisha, Ltd., Yokohama, Japan
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Hajima Y, Koyama Y, Nakabayashi S, Hachio T, Sasaki M, Ninomiya K. [A case of Reifenstein syndrome]. Nihon Naika Gakkai Zasshi 1990; 79:1083-4. [PMID: 2230485] [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: 12/30/2022]
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Ogino H, Iwamatsu K, Katano K, Nakabayashi S, Yoshida T, Tsuruoka T, Inouye S, Kondo S. New aminothiazolylglycylcephalosporins with a 1,5-dihydroxy-4-pyridone-2-carbonyl group. I. Synthesis and biological activity of cephalosporin derivatives leading to MT0703. J Antibiot (Tokyo) 1990; 43:174-88. [PMID: 2179185 DOI: 10.7164/antibiotics.43.174] [Citation(s) in RCA: 9] [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: 12/30/2022]
Abstract
A series of new aminothiazolylglycylcephalosporins with a mono- or dihydroxypyridonecarbonyl group at the alpha-amino group of the C-7 substituent have been prepared and antibacterial activity of these compounds was investigated. Among them, the compounds having a 1,5-dihydroxy-4-pyridone-2-carbonyl group showed excellent anti-pseudomonal activity. In particular, (6R,7R)-7-[(RS)-2-(2-aminothiazol-4-yl)-2-(1,5-dihydroxy-4- pyridone-2-carboxamido)- acetamido]-3-[[1-(2-hydroxyethyl)pyridinium-4-yl]thiomethyl]ceph-3 -em- 4-carboxylate (MT0703, 7g) was found to be a well balanced compound with respect to antibacterial activity.
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Affiliation(s)
- H Ogino
- Pharmaceutical Research Center, Meiji Seika Kaisha, Ltd., Yokohama, Japan
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Ogino H, Iwamatsu K, Katano K, Nakabayashi S, Yoshida T, Shibahara S, Tsuruoka T, Inouye S, Kondo S. New aminothiazolylglycylcephalosporins with a 1,5-dihydroxy-4-pyridone-2-carbonyl group. II. Synthesis and antibacterial activity of MT0703 and its diastereomers. J Antibiot (Tokyo) 1990; 43:189-98. [PMID: 2179186 DOI: 10.7164/antibiotics.43.189] [Citation(s) in RCA: 13] [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: 12/30/2022]
Abstract
A practical synthetic method for large scale production of MT0703, (6R,7R)-7-[(RS)-2-(2-aminothiazol-4-yl)-2-(1,5-dihydroxy-4-pyridon e-2- carboxamido)acetamido]-3-[[1-(2-hydroxyethyl)pyridinium-4- yl]thiomethyl]ceph-3-em-4-carboxylate, was established. Its two diastereomers on configuration of the aminothiazolylglycyl moiety were synthesized using chemico-enzymatic method. The S-isomer of MT0703 was found to be more active against Gram-positive and Gram-negative bacteria including beta-lactamase-producing strains than the R-isomer.
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Affiliation(s)
- H Ogino
- Pharmaceutical Research Center, Meiji Seika Kaisha, Ltd., Yokohama, Japan
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Isaka Y, Kimura K, Uehara A, Hashikawa K, Mieno M, Matsumoto M, Handa N, Nakabayashi S, Imaizumi M, Kamada T. Platelet aggregability and in vivo platelet deposition in patients with ischemic cerebrovascular disease--evaluation by indium-111-platelet scintigraphy. Thromb Res 1989; 56:739-49. [PMID: 2633402 DOI: 10.1016/0049-3848(89)90291-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
In ischemic cerebrovascular disease, it is not clear whether platelet function in vitro actually reflects the situation in vivo. Using indium-111 platelet scintigraphy as a method for detecting platelet activation in vivo, we tried to elucidate this problem. Twenty eight patients with chronic stage of ischemic cerebrovascular disease (CVD) and 17 control subjects were examined. Platelet scintigrams were positive in 9 of 28 patients in CVD, while all were negative in control. A comparison of the results obtained from qualitative platelet imaging and platelet aggregability was performed to evaluate whether threshold aggregation concentration (TAC) grade differed across the three groups (control, CVD patients without platelet deposition and CVD patients with platelet deposition). CVD patients with platelet deposition showed a higher TAC than those patients who did not show platelet deposition (P less than 0.05) or control subjects without platelet deposition (P less than 0.05). These results suggest that some patients in chronic stages of CVD may have active platelet deposition on carotid atheromatous lesions, and presence of platelet deposition in vivo could contribute to reduce platelet reactivity in peripheral blood.
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Affiliation(s)
- Y Isaka
- Department of Cardiovascular Medicine, National Osaka Hospital, Japan
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Goussault Y, Nakabayashi S, Warren CD, Bugge B, Jeanloz RW. Biosynthesis, in calf pancreas microsomes, of three lipid-linked oligosaccharide diphosphates from a synthetic dolichyl diphosphate tetrasaccharide. Carbohydr Res 1988; 179:381-92. [PMID: 2463085 DOI: 10.1016/0008-6215(88)84134-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Incubation of calf pancreas microsomes with synthetic alpha-D-Manp-(1----6)-beta-D-Manp-(1----4)-beta-D-GlcpNAc-(1 ----4)-alpha-D- GlcpNAc-PP-Dol and GDP-D-[14C]-mannose gave three major lipid-linked oligosaccharide diphosphates. After release of the phospholipid residue by mild acid hydrolysis, the corresponding [14C]oligosaccharides were analyzed by gel-filtration, liquid chromatography, degradation by endo-N-acetyl-beta-D-glucosaminidases D and H, by jack bean alpha-D-mannosidase and Aspergillus oryzae (1----2)-alpha-D-mannosidase, acetolysis, and binding to concanavalin A-Sepharose. From the results it could be inferred that the following reaction took place in calf pancreas microsomes: alpha-D-Manp-(1----6)-beta-D-Manp-(1----4)-beta-D-GlcpNAc-(1 ----4)-alpha-D- GlcpNAc-PP-Dol + GDP-D-Man gave GDP + alpha-D-Manp-(1----3)-[alpha-D-Manp-(1----6)]-beta-D-Manp -(1----4)- beta-D-GlcpNAc-(1----4)-alpha-D-GlcpNAc-PP-Dol. The next products to be formed were alpha-D-Manp-(1----2)-alpha-D-Manp-(1----3)-[alpha-D-Manp -(1----6)]-beta-D- Manp-(1----4)-beta-D-GlcpNAc-(1----4)-alpha-D-GlcpNAc-PP-Dol, followed by alpha-D-Manp-(1----2)-alpha-D-Manp-(1----2)-alpha-D-Manp+ ++-(1----3)- [alpha-D-Manp-(1----6)]-beta-D-Manp-(1----4)-beta-D-GlcpNAc- (1----4)-alpha- D-GlcpNAc-PP-Dol. The mannose incorporation was enhanced by Triton X-100 and inhibited by Mn2+, and it occurred in the presence of either Mg2+ or EDTA. It is likely that the mannose donor was GDP-mannose since, under the conditions used, the formation of dolichyl mannosyl phosphate was negligible and the dolichyl heptasaccharide diphosphate accumulated.
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Affiliation(s)
- Y Goussault
- Department of Biological Chemistry, Harvard Medical School, Boston, Massachusetts
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Abstract
The heptasaccharide O-alpha-D-mannopyranosyl-(1----6)-O-[alpha-D-mannopyranosyl-(1----3)]-O- alpha-D-mannopyranosyl-(1----6)-O-[alpha-D-mannopyranosyl-(1----3)]-O-be ta- D-mannopyranosyl-(1----4)-O-(2-acetamido-2-deoxy-beta-D-glucopyranosyl)- (1----4)-2-acetamido-2-deoxy-D-glucopyranose, isolated from the urine of swainsonine-intoxicated sheep, was peracetylated and was converted into the glycosyl azide by three alternative procedures, the most successful of which was formation of peracetyl oxazoline by treatment with trimethylsilyl trifluoromethanesulfonate, followed by treatment with trimethylsilyl azide. Reduction of the glycosyl azide in the presence of Lindlar catalyst gave the glycosylamine derivative, which was coupled with 1-benzyl N-fluoren-9-ylmethoxycarbonyl-L-aspartate to yield a protected glycosylasparagine. The benzyl ester group was easily removed by hydrogenolysis to form an intermediate suitable for glycopeptide synthesis.
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Affiliation(s)
- S Nakabayashi
- Department of Biological Chemistry, Harvard Medical School, Boston, Massachusetts
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