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Wada K, Takaguri A, Kaneda K, Mizukami M, Suzuki Y, Yamashita H. Rational design and structure-activity relationship studies reveal new esterified C 20-diterpenoid alkaloid analogues active against MCF-7 human breast cancer cells. J Nat Med 2023; 77:276-283. [PMID: 36477683 DOI: 10.1007/s11418-022-01667-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 11/24/2022] [Indexed: 12/12/2022]
Abstract
Although various diterpenoid alkaloids have been evaluated recently for antiproliferative activity against human tumor cell lines, little information is available regarding the antiproliferative effects of C20-diterpenoid alkaloids against MCF-7 cells. Six new diterpenoid alkaloid derivatives (13, 14, 22, 23, 25, 26) were prepared by C-11 and 15 esterification of kobusine (6). The natural parent alkaloid 6 and all synthesized derivatives (7 - 27, 12a, 15a, 15b, 18a, 18b) were evaluated for antiproliferative activity against MCF-7 cells. The structure-based design strategy resulted in an initial lead derivative, 11,15-dibenzoylkobusine (7; IC50 8.6 µM). Subsequent synthesized 11,15-diacylkobusine derivatives (9, 16, 20, 21, 23, 25, and 26) showed substantially increased suppressive effects against the MCF-7 cell line (IC50 2.3-4.4 µM). In contrast, parent alkaloid 6, two 11-acylkobusine derivatives (15a, 18a), and two 15-acylkobusine derivatives (15b, 18b) showed no effect. 11,15-Diacylation appears to be critical for producing antiproliferative activity in this alkaloid class and could introduce a new avenue in overcoming breast cancer cell proliferation using natural product derivatives. In a preliminary mechanism of action study, representative derivatives (5, 8, 9, and 17) decreased cyclin D1 mRNA expression.
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Affiliation(s)
- Koji Wada
- Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, Hokkaido University of Science, 4-1, Maeda 7-Jo 15-Choume, Teine-Ku, Sapporo, 006-8585, Japan.
| | - Akira Takaguri
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Hokkaido University of Science, 4-1, Maeda 7-Jo 15-Choume, Teine-Ku, Sapporo, 006-8585, Japan
- Creation Research Institute of Life Science in KITA-No-DAICHI, Hokkaido University of Science, Sapporo, Hokkaido, Japan
| | - Kyosuke Kaneda
- Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, Hokkaido University of Science, 4-1, Maeda 7-Jo 15-Choume, Teine-Ku, Sapporo, 006-8585, Japan
- Creation Research Institute of Life Science in KITA-No-DAICHI, Hokkaido University of Science, Sapporo, Hokkaido, Japan
| | - Megumi Mizukami
- Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, Hokkaido University of Science, 4-1, Maeda 7-Jo 15-Choume, Teine-Ku, Sapporo, 006-8585, Japan
| | - Yuji Suzuki
- Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, Hokkaido University of Science, 4-1, Maeda 7-Jo 15-Choume, Teine-Ku, Sapporo, 006-8585, Japan
| | - Hiroshi Yamashita
- Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, Hokkaido University of Science, 4-1, Maeda 7-Jo 15-Choume, Teine-Ku, Sapporo, 006-8585, Japan
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Yokomatsu T, Kato M, Hojo S, Kawaji T, Kushiyama A, Yaku H, Nakatsuma K, Kaneda K, Miki S. Long-term outcomes evaluated by device-monitored physical activity in patients with implantable cardiac defibrillator or cardiac resynchronization therapy device. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2870] [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: 11/13/2022] Open
Abstract
Abstract
Background
The patients with implantable cardiac defibrillator (ICD) or cardiac resynchronization therapy device (CRT) have high risk of cardiac events, and lower physical activity has been thought to be associated with higher rate of cardiac events. On the other hand, cardiovascular implantable electronic devices can monitor physical activity through a built-in accelerometer. This study aimed to analyze long-term outcomes by device-based monitoring of physical activity in patients with ICD or CRT.
Methods
We retrospectively reviewed 89 patients with ICD/CRT, (56 males, 66.5 years old; ICD 45, CRT-D 42, CRT-P 2) who survived longer than 6 months after implantation in our institution. We analyzed physical activity by devices at 6th month and divided to 2 groups; In Low activity group (group L; n=38), their physical activity (moving time above 70 steps/min walk level) is less than 2 hours/day, and in Normal activity group (group N; n=51), physical activity is more than 2 hours/day. We evaluated their background characteristics in each group, physical activity at 12th month, and composite outcomes of hospitalization due to worsening of heart failure (HF) and death of any cause.
Results
Mean follow-up period was 57.4 months (median 40 months). In group L, they had higher age (71.1 y.o. vs. 63.2 y.o.; p=0.0003), higher rate of low EF (76.3% vs. 54.9%; p=0.035), and lower rate of attendance to outpatient cardiac rehabilitation program (10.5% vs 27.5%; p=0.043) compared with group N. 85.7% of patients in group L stayed in low physical activity at 12th month, and 87.8% of patient in group N stayed in normal physical activity. Composite outcomes of HF hospitalization and death occurred significantly higher in group L (Log-rank p<0.0001; 29.0% vs. 5.9% at 1 year, and 68.7% vs. 16.2% at 3 year: Figure 1) than in group N. Each event, HF hospitalization and death of any cause were shown significantly higher in group L (Log-rank p<0.0001). In group L, mortality rate of patients who could improve their physical activity from 6th month to 12th month was significantly lower than patients who stayed in low physical activity (Log-rank p=0.038).
Conclusions
Lower level of device-monitored physical activity was associated with higher mortality and higher rate of HF hospitalization in patients with ICD or CRT. Most of the patient in lower physical activity could not improve their activity from 6th month to 12th month. Early and continuous intervention is necessary especially for high risk patients such as high age or low EF.
Figure 1
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
| | - M Kato
- Mitsubishi Kyoto Hospital, Kyoto, Japan
| | - S Hojo
- Mitsubishi Kyoto Hospital, Kyoto, Japan
| | - T Kawaji
- Mitsubishi Kyoto Hospital, Kyoto, Japan
| | | | - H Yaku
- Mitsubishi Kyoto Hospital, Kyoto, Japan
| | | | - K Kaneda
- Mitsubishi Kyoto Hospital, Kyoto, Japan
| | - S Miki
- Mitsubishi Kyoto Hospital, Kyoto, Japan
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Kaneda K. [Synthesis of Cyclic Compounds Containing Aminobenzenesulfonamide]. YAKUGAKU ZASSHI 2020; 140:1087-1094. [PMID: 32879240 DOI: 10.1248/yakushi.20-00139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This review, based on my research work, introduces and summarizes the synthesis and characterization of novel cyclic compounds containing aminobenzenesulfonamide. The review discusses the (1) development of sequential Nicholas and Pauson-Khand reactions for the synthesis of unique polyheterocyclic compounds, (2) production of 2-aminobenzenesulfonamide-containing cyclononyne (ABSACN) as a multifunctional click cycloalkyne agent, and (3) improvement of the intramolecular Pauson-Khand reaction of the nitroarene-enyne substrate for the synthesis of cyclopenta[c]piperidine alkaloids. This research work will facilitate the discovery of sulfonamide or sultam-based functional molecules and pharmaceuticals. Thus, I believe that aminobenzenesulfonamide derivatives are versatile and valuable chemical moieties not only in organic syntheses but also in the pharmaceutical industry. If you are interested in the details of this topic, please refer to the original papers.
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Affiliation(s)
- Kyosuke Kaneda
- Faculty of Pharmaceutical Sciences, Hokkaido University of Science
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4
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Saitoh Y, Kaneda K, Tokunaga Y, Murakawa M. Retraction notice to “Infusion of amino acid enriched solution hastens recovery from neuromuscular block caused by vecuronium” [Br J Anaesth 2001; 86: 814–821]. Br J Anaesth 2019; 122:155. [DOI: 10.1016/j.bja.2018.11.006] [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] Open
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Saitoh Y, Kaneda K, Toyooka H, Amaha K. Retraction notice to "Post-tetanic count and single twitch height at the onset of reflex movement after administration of vecuronium under different types of anaesthesia" [Br J Anaesth 1994; 72: 688-690]. Br J Anaesth 2018; 122:152. [PMID: 30579396 DOI: 10.1016/j.bja.2018.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Abstract
This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy). This article has been retracted at the request of the Editor-in-Chief of British Journal of Anaesthesia. The study is retracted for the following reasons: Y Saitoh provided a statement in a personal communication to a member of the editorial board of British Journal of Anaesthesia that the study was not approved by the Institutional Review Board and that no evidence exists to support the study findings.
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Affiliation(s)
- Y Saitoh
- Department of Anaesthesiology and Critical Care Medicine, Faculty of Medicine, Tokyo Medical and Dental University 5-45, Yushima, 1-Chome, Bunkyo-ku, Tokyo 113, Japan
| | - K Kaneda
- Department of Anaesthesiology and Critical Care Medicine, Faculty of Medicine, Tokyo Medical and Dental University 5-45, Yushima, 1-Chome, Bunkyo-ku, Tokyo 113, Japan
| | - H Toyooka
- Department of Anaesthesiology and Critical Care Medicine, Faculty of Medicine, Tokyo Medical and Dental University 5-45, Yushima, 1-Chome, Bunkyo-ku, Tokyo 113, Japan
| | - K Amaha
- Department of Anaesthesiology and Critical Care Medicine, Faculty of Medicine, Tokyo Medical and Dental University 5-45, Yushima, 1-Chome, Bunkyo-ku, Tokyo 113, Japan
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Yokomatsu T, Hojo S, Kawaji T, Kushiyama A, Nakatsuma K, Kaneda K, Kato M, Miki S. P1603Efficacy of combination therapy of methotrexate and low-dose corticosteroid for cardiac sarcoidosis evaluated by fuluorine-18 fluorodeoxyglucose positron emission tomography. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1603] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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)
| | - S Hojo
- Mitsubishi Kyoto Hospital, Kyoto, Japan
| | - T Kawaji
- Mitsubishi Kyoto Hospital, Kyoto, Japan
| | | | | | - K Kaneda
- Mitsubishi Kyoto Hospital, Kyoto, Japan
| | - M Kato
- Mitsubishi Kyoto Hospital, Kyoto, Japan
| | - S Miki
- Mitsubishi Kyoto Hospital, Kyoto, Japan
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Ohira SI, Kaneda K, Matsuzaki T, Mori S, Mori M, Toda K. Universal HPLC Detector for Hydrophilic Organic Compounds by Means of Total Organic Carbon Detection. Anal Chem 2018; 90:6461-6467. [PMID: 29733193 DOI: 10.1021/acs.analchem.7b04849] [Citation(s) in RCA: 7] [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] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Most quantifications are achieved by comparison of the signals obtained with the sample to those from a standard. Thus, the purity and stability of the standard are key in chemical analysis. Furthermore, if an analyte standard cannot be obtained, quantification cannot be achieved, even if the chemical structures are identified by a qualification method (e.g., high-resolution mass spectrometry). Herein, we describe a universal and analyte standard-free detector for aqueous-eluent-based high-performance liquid chromatography. This universal carbon detector (UCD) was developed based on total organic carbon detection. Separated analytes were oxidized in-line and converted to carbon dioxide (CO2). Generated CO2 was transferred into the gas phase and collected into ultrapure water, which was followed by conductivity detection. The system can be applied as a HPLC detector that does not use an organic solvent as an eluent. The system can be calibrated with a primary standard of sodium bicarbonate for organic compounds. The universality and quantification were evaluated with organic compounds, including organic acids, sugars, and amino acids. Furthermore, the system was successfully applied to evaluation of the purity of formaldehyde in formalin solution, and determination of sugars in juices. The results show the universal carbon detector has good universality and can quantify many kinds of organic compounds with a single standard such as sodium bicarbonate.
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Affiliation(s)
- Shin-Ichi Ohira
- Department of Chemistry , Kumamoto University , 2-39-1 Kurokami , Kumamoto , 860-8555 , Japan
| | - Kyosuke Kaneda
- Department of Chemistry , Kumamoto University , 2-39-1 Kurokami , Kumamoto , 860-8555 , Japan
| | - Toru Matsuzaki
- Department of Chemistry , Kumamoto University , 2-39-1 Kurokami , Kumamoto , 860-8555 , Japan
| | - Shuta Mori
- Department of Chemistry , Kumamoto University , 2-39-1 Kurokami , Kumamoto , 860-8555 , Japan
| | - Masanobu Mori
- Faculty of Science and Technology , Kochi University , 2-5-1 Akebono-cho , Kochi , 780-8520 , Japan
| | - Kei Toda
- Department of Chemistry , Kumamoto University , 2-39-1 Kurokami , Kumamoto , 860-8555 , Japan
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Kaneda K, Naruse R, Yamamoto S, Satoh T. Reactivity of the Sultam and Strained Alkyne Groups in 2-Aminobenzenesulfonamide-Containing Cyclononyne (ABSACN). ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201700687] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Kyosuke Kaneda
- Division of Medicinal Chemistry; Hokkaido Pharmaceutical University; 7-15-4-1 Maeda Teine Sapporo Hokkaido 006-8590 Japan
| | - Risa Naruse
- Division of Medicinal Chemistry; Hokkaido Pharmaceutical University; 7-15-4-1 Maeda Teine Sapporo Hokkaido 006-8590 Japan
| | - Syota Yamamoto
- Division of Medicinal Chemistry; Hokkaido Pharmaceutical University; 7-15-4-1 Maeda Teine Sapporo Hokkaido 006-8590 Japan
| | - Teppei Satoh
- Division of Medicinal Chemistry; Hokkaido Pharmaceutical University; 7-15-4-1 Maeda Teine Sapporo Hokkaido 006-8590 Japan
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Kaneda K, Taira R, Fukuzawa T. Efficient synthesis of N-nosyl-protected 3-azabicyclo[4.3.0]nonen-8-one by an aniline- and nitrobenzene-mediated Pauson–Khand cyclization. SYNTHETIC COMMUN 2017. [DOI: 10.1080/00397911.2017.1337151] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Kyosuke Kaneda
- Medicinal Chemistry Department, Hokkaido Pharmaceutical University School of Pharmacy, Sapporo, Hokkaido, Japan
| | - Ryuki Taira
- Medicinal Chemistry Department, Hokkaido Pharmaceutical University School of Pharmacy, Sapporo, Hokkaido, Japan
| | - Tsubasa Fukuzawa
- Medicinal Chemistry Department, Hokkaido Pharmaceutical University School of Pharmacy, Sapporo, Hokkaido, Japan
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Kaneda K, Naruse R, Yamamoto S. 2-Aminobenzenesulfonamide-Containing Cyclononyne as Adjustable Click Reagent for Strain-Promoted Azide-Alkyne Cycloaddition. Org Lett 2017; 19:1096-1099. [PMID: 28195493 DOI: 10.1021/acs.orglett.7b00123] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis of 2-aminobenzenesulfonamide-containing cyclononyne (ABSACN), starting from 2-nitrobenzenesulfonamide and but-2-yne-1,4-diol via Mitsunobu and Nicholas reactions, is described for the development of an adjustable alkyne reagent in click reactions. In a strain-promoted azide-alkyne cycloaddition (SPAAC) reaction, the reactivity of the alkyne is controlled by introducing various N-functionalities. The structure-reactivity relationship is found to be influenced by a transannular hydrogen bond between amino and sulfonyl groups.
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Affiliation(s)
- Kyosuke Kaneda
- Hokkaido Pharmaceutical University School of Pharmacy , 7-15-4-1 Maeda Teine Sapporo, Hokkaido 006-8590, Japan
| | - Risa Naruse
- Hokkaido Pharmaceutical University School of Pharmacy , 7-15-4-1 Maeda Teine Sapporo, Hokkaido 006-8590, Japan
| | - Syota Yamamoto
- Hokkaido Pharmaceutical University School of Pharmacy , 7-15-4-1 Maeda Teine Sapporo, Hokkaido 006-8590, Japan
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Abstract
We report a quasi-solid electrolyte comprising a transparent thixotropic gel swelled by an ionic liquid that is formed by a framework of single-walled aluminosilicate cylindrical inorganic “imogolite” nanotubes.
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Affiliation(s)
- K. Shikinaka
- Graduate School of Engineering
- Tokyo University of Agriculture and Technology
- Koganei
- Japan
| | - N. Taki
- Graduate School of Engineering
- Tokyo University of Agriculture and Technology
- Koganei
- Japan
| | - K. Kaneda
- Graduate School of Engineering
- Tokyo University of Agriculture and Technology
- Koganei
- Japan
| | - Y. Tominaga
- Graduate School of Bio-Applications and Systems Engineering
- Tokyo University of Agriculture and Technology
- Koganei
- Japan
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12
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Uni S, Abe M, Harada K, Kaneda K, Kimata I, Abdelmaksoud NM, Takahashi K, Miyashita M, Iseki M. New record ofGongylonema pulchrumMolin, 1857 from a new host,Macaca fuscata,in Japan. ACTA ACUST UNITED AC 2016. [DOI: 10.1051/parasite/1992676221] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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13
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Kaneda K, Akimura N, Fujii A, Kamada F, Nogiwa R, Yamamoto S, Sato T, Ishikawa S, Okazaki T. Synthesis of Tetracyclic Molecules Containing Medium-Sized Heterocycles: Scope Expansion of Cascade Nicholas and Pauson–Khand Methodology. SYNTHESIS-STUTTGART 2016. [DOI: 10.1055/s-0035-1562780] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Sudo H, Kaneda K, Shono Y, Iwasaki N. Short fusion strategy for thoracolumbar and lumbar adolescent idiopathic scoliosis using anterior dual-rod instrumentation. Bone Joint J 2016; 98-B:402-9. [PMID: 26920967 DOI: 10.1302/0301-620x.98b3.36715] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [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: 11/05/2022]
Abstract
Aims A total of 30 patients with thoracolumbar/lumbar adolescent idiopathic scoliosis (AIS) treated between 1989 and 2000 with anterior correction and fusion surgery using dual-rod instrumentation were reviewed. Patients and Methods Radiographic parameters and clinical outcomes were compared among patients with lowest instrumented vertebra (LIV) at the lower end vertebra (LEV; EV group) (n = 13) and those treated by short fusion (S group), with LIV one level proximal to EV (n = 17 patients). Results The allocation of the surgical technique was determined by the flexibility of the TL/L curves and/or neutral vertebrae located one level above LEV as determined on preoperative radiographs. If these requirements were met a short fusion was performed. The mean follow-up period was 21.4 years (16 to 27). The mean correction rate at final follow-up was significantly lower in the S group (74 sd 11%) than in the EV group (88 sd 13%) (p = 0.004).Coronal and sagittal balance, thoracic kyphosis, lumbar lordosis, and clinical outcomes evaluated by the Scoliosis Research Society-22 questionnaire scores were equivalent between the two groups. Conclusion Short fusion strategy, which uses LIV one level proximal to LEV can be considered as an alternative to the conventional strategy, which includes LEV in the fusion, when highly flexible TL/L curves are confirmed and/or neutral vertebrae are located one level above LEV in patients with thoracolumbar/lumbar AIS curves. Take home message: Short fusion strategy can be considered as an alternative to the conventional strategy in patients with thoracolumbar/lumbar AIS curves undergoing anterior spinal fusion with dual-rod instrumentation. Cite this article: Bone Joint J 2016;98-B:402–9.
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Affiliation(s)
- H. Sudo
- Hokkaido University Graduate School of
Medicine, North-15, West-7, Kita-ku, Sapporo, Hokkaido
060-8638, Japan
| | - K. Kaneda
- Orthopaedic Hokushin Hospital, Kikusuimotomachi
3-3, Sapporo, Hokkaido
003-0823, Japan
| | - Y. Shono
- Japan Community Health Care Organization
Hokkaido Hospital, Nakanoshima 1-8, Sapporo, Hokkaido
062-8618, Japan
| | - N. Iwasaki
- Hokkaido University Graduate School of
Medicine, North-15, West-7, Kita-ku, Sapporo, Hokkaido
060-8638, Japan
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Kaneda K, Fujita M, Naruse R. Experimental Investigation of Tetracyclic Compounds Containing a Nine-Membered Sultam via Cobalt Alkyne Complexes. HETEROCYCLES 2016. [DOI: 10.3987/com-15-13381] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Takagi Y, Kaneda K, Miyaki M, Matsuo K, Kawada H, Hosokawa H. The long-term use of soap does not affect the pH-maintenance mechanism of human skin. Skin Res Technol 2014; 21:144-8. [DOI: 10.1111/srt.12170] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/16/2014] [Indexed: 11/27/2022]
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Vega-Villa K, Kaneda K, Yamashita S, Woo S, Han T. Vecuronium pharmacokinetics in patients with major burns † †A part of this work was presented during the 2010 Annual Meeting of American Society of Anaesthesiologists, San Diego, CA, USA. Br J Anaesth 2014; 112:304-10. [DOI: 10.1093/bja/aet309] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Fujinaga H, Takeuchi K, Kaneda K, Takasaki Y, Hashimoto H. Analysis of autoantibodies to cell cycle-associated antigens. Mod Rheumatol 2014; 11:222-9. [DOI: 10.3109/s101650170008] [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] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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20
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Granger BA, Wang Z, Kaneda K, Fang Z, Martin SF. Multicomponent assembly processes for the synthesis of diverse yohimbine and corynanthe alkaloid analogues. ACS Comb Sci 2013; 15:379-86. [PMID: 23697376 DOI: 10.1021/co400055b] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A strategy involving a Mannich-type multicomponent assembly process followed by a 1,3-dipolar cycloaddition has been developed for the rapid and efficient construction of parent heterocyclic scaffolds bearing indole and isoxazolidine rings. These key intermediates were then readily elaborated using well-established protocols for refunctionalization and cross-coupling to access a diverse 180-member library of novel pentacyclic and tetracyclic compounds related to the Yohimbine and Corynanthe alkaloids. Several other new multicomponent assembly processes were developed to access dihydro-β-carboline-fused benzodiazepines, pyrimidinediones, and rutaecarpine derivatives.
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Affiliation(s)
- Brett A. Granger
- Department of Chemistry
and Biochemistry, The Texas Institute for Drug and Diagnostic Development, The University of Texas at Austin, Austin, Texas 78712,
United States
| | - Zhiqian Wang
- Department of Chemistry
and Biochemistry, The Texas Institute for Drug and Diagnostic Development, The University of Texas at Austin, Austin, Texas 78712,
United States
| | - Kyosuke Kaneda
- Department of Chemistry
and Biochemistry, The Texas Institute for Drug and Diagnostic Development, The University of Texas at Austin, Austin, Texas 78712,
United States
| | - Zhenglai Fang
- Department of Chemistry
and Biochemistry, The Texas Institute for Drug and Diagnostic Development, The University of Texas at Austin, Austin, Texas 78712,
United States
| | - Stephen F. Martin
- Department of Chemistry
and Biochemistry, The Texas Institute for Drug and Diagnostic Development, The University of Texas at Austin, Austin, Texas 78712,
United States
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Kaneda K, Ohgi Y, Ando K, Byun KO, Tsubakimoto S, Burkett B. Lower limb and trunk muscles activity when exercising in water. J Sci Med Sport 2012. [DOI: 10.1016/j.jsams.2012.11.150] [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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Uchida E, Anan F, Masaki T, Kaneda K, Nawata T, Eshima N, Saikawa T, Yoshimatsu H. Monocyte chemoattractant protein-1 is associated with silent cerebral infarction in patients on haemodialysis. Intern Med J 2012; 42:29-34. [PMID: 21627744 DOI: 10.1111/j.1445-5994.2011.02538.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND In patients with chronic renal failure undergoing haemodialysis (HD), silent cerebral infarctions (SCI) are associated with high mortality. Levels of monocyte chemoattractant protein-1 (MCP-1) increase with renal dysfunction and may be a novel predictor for cerebrovascular events. We tested the hypothesis that increased MCP-1 concentration correlate with the occurrence of SCI in HD patients. METHODS Using cranial magnetic resonance imaging (MRI) findings, 52 Japanese patients undergoing HD were divided into two groups: with SCI (61 ± 7 years, mean ± SD, n= 28) and without SCI (60 ± 6 years, n= 24). The gender, metabolic profiles and MCP-1 concentration were compared between the two groups. RESULTS The level of MCP-1 was higher in the with-SCI group than in the without-SCI group (P < 0.0001). The proportion of smokers was higher in the with-SCI group (P < 0.05) than in the without-SCI group. Plasma level of high-density lipoprotein cholesterol was lower, while uric acid level was higher, in the with-SCI group (P < 0.05 and P < 0.05 respectively) compared to the without-SCI group. Multiple logistic regression analysis identified MCP-1 level as being significantly associated with the presence of SCI (odds ratio 1.48, 95% confidence interval = 1.10-5.75, P < 0.0001). CONCLUSIONS This study indicates that patients with chronic renal failure who are maintained on HD exhibit an increased prevalence of SCI, and that MCP-1 is significantly associated with the presence of SCI in HD patients.
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Affiliation(s)
- E Uchida
- Department of Nephrology, Tsukumi Central Hospital, Oita, Japan
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Wang Z, Kaneda K, Fang Z, Martin SF. Corrigendum to “Diversity oriented synthesis: concise entry to novel derivatives of Yohimbine and Corynanthe alkaloids” [Tetrahedron Lett. 53 (2011) 477–479]. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.01.100] [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: 11/28/2022]
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Abstract
A novel MCAP-cycloaddition sequence has been applied to the facile synthesis of β-carboline intermediates to gain rapid access to novel derivatives of yohimbine-like and corynanthe-like compounds that may be easily diversified by cross-coupling reactions and N-derivatizations to generate small compound libraries.
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Affiliation(s)
- Zhiqian Wang
- Department of Chemistry and Biochemistry and Texas Institute for Drug and Diagnostic Development, The University of Texas, Austin, TX, 78712, USA
| | - Kyosuke Kaneda
- Department of Chemistry and Biochemistry and Texas Institute for Drug and Diagnostic Development, The University of Texas, Austin, TX, 78712, USA
| | - Zhenglai Fang
- Department of Chemistry and Biochemistry and Texas Institute for Drug and Diagnostic Development, The University of Texas, Austin, TX, 78712, USA
| | - Stephen F. Martin
- Department of Chemistry and Biochemistry and Texas Institute for Drug and Diagnostic Development, The University of Texas, Austin, TX, 78712, USA
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25
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Takeda Y, Kaneda K, Jimma F, Shiobara N, Hidaka M, Saniabadi AR, Wakabayashi I. Inhibition of CXCL10 release by monomeric C3bi and C4b. Clin Exp Immunol 2012; 167:149-57. [PMID: 22132894 DOI: 10.1111/j.1365-2249.2011.04490.x] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Cellulose acetate (CA) beads are often used for leucocyte apheresis therapy against inflammatory bowel disease. In order to clarify the mechanism of the anti-inflammatory effects of CA, global analysis of the molecules generated in blood by the interaction with CA beads was performed in this study. An activated medium was collected from whole blood that had been preincubated with CA beads, and the effects of the CA-activated medium on leucocyte function were investigated. Fresh blood was stimulated with lipopolysaccharide (LPS) or interferon (IFN)-β in the presence of the activated medium, and levels of chemokines and cytokines, including CXCL10 (IFN-inducible protein-10), and phosphorylated STAT1 (signal transducer and activator of transcription 1), which is known to be essential for CXCL10 production in leucocytes, were measured. IFN-β- or LPS-induced CXCL10 production, expression of CXCL10 mRNA and phosphorylation of STAT1 were significantly reduced in the presence of the medium pretreated with CA beads compared with the control without the CA bead treatment. The factors inhibiting CXCL10 production were identified as the C3 and C4 fragments by mass spectrometry. The monomeric C3bi and C4b proteins were abundant in the medium pretreated with CA beads. Furthermore, purified C3bi and C4b were found to inhibit IFN-β-induced CXCL10 production and STAT1 phosphorylation. Thus, STAT1-mediated CXCL10 production induced by stimulation with LPS or IFN was potently inhibited by monomeric C3bi and C4b generated by the interaction of blood with CA beads. These mechanisms mediated by monomeric C3bi and C4b may be involved in the anti-inflammatory effects of CA.
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Affiliation(s)
- Y Takeda
- Department of Environmental and Preventive Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan.
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Granger BA, Kaneda K, Martin SF. Libraries of 2,3,4,6,7,11b-hexahydro-1H-pyrido[2,1-a]isoquinolin-2-amine derivatives via a multicomponent assembly process/1,3-dipolar cycloaddition strategy. ACS Comb Sci 2012; 14:75-9. [PMID: 22040015 DOI: 10.1021/co2001636] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A Mannich-type multicomponent assembly process/1,3-dipolar cycloaddition strategy has been developed for the rapid and efficient construction of a parent tetrahydroisoquinoline fused isoxazolidine scaffold, which was subsequently functionalized using well-established protocols to access a diverse 70-membered library of novel 2,3,4,6,7,11b-hexahydro-1H-pyrido[2,1-a]isoquinoline-2-amine derivatives.
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Affiliation(s)
- Brett A. Granger
- Department of Chemistry and Biochemistry, The Texas
Institute for Drug and Diagnostic Development, The University of Texas, Austin, Texas 78712, United States
| | - Kyosuke Kaneda
- Department of Chemistry and Biochemistry, The Texas
Institute for Drug and Diagnostic Development, The University of Texas, Austin, Texas 78712, United States
| | - Stephen F. Martin
- Department of Chemistry and Biochemistry, The Texas
Institute for Drug and Diagnostic Development, The University of Texas, Austin, Texas 78712, United States
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27
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Kaneda K, Ohgi Y, Burkett B. Which is better to attach accelerometer for classifying water exercise, head or chest? J Sci Med Sport 2011. [DOI: 10.1016/j.jsams.2011.11.177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Abstract
Several novel multicomponent assembly processes have been developed for the rapid and efficient assembly of various heterocyclic scaffolds bearing a tetrahydroisoquinoline core, each of which allows for facile derivatization to access a diverse array of compounds. This work led to the serendipitous discovery of a new method for the synthesis of a fused quinazolone ring system, which was applied to a one-step total synthesis of the quinazolinocarboline alkaloid rutaecarpine.
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Affiliation(s)
- Brett A Granger
- Department of Chemistry and Biochemistry, The Texas Institute for Drug and Diagnostic Development, The University of Texas at Austin, Austin, Texas 78712, USA
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29
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Saito Y, Nakahata S, Yamakawa N, Kaneda K, Ichihara E, Suekane A, Morishita K. CD52 as a molecular target for immunotherapy to treat acute myeloid leukemia with high EVI1 expression. Leukemia 2011; 25:921-31. [PMID: 21394097 DOI: 10.1038/leu.2011.36] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Ecotropic viral integration site 1 (EVI1) is an oncogenic transcription factor in human acute myeloid leukemia (AML) with chromosomal alterations at 3q26. Because a high expression of EVI1 protein in AML cells predicts resistance to chemotherapy with a poor outcome, we have searched for molecular targets that will treat these patients with AML. In this study, we determined that CD52, which is mainly expressed on lymphocytes, is highly expressed in most cases of AML with a high EVI1 expression (EVI1(High)). CAMPATH-1H, a humanized monoclonal antibody against CD52, has been used to prevent graft-versus-host disease and treat CD52-positive lymphoproliferative disorders. Here, we investigated the antitumor effect of CAMPATH-1H on EVI1(High) AML cells. CAMPATH-1H significantly inhibited cell growth and induced apoptosis in CD52-positive EVI1(High) leukemia cells. Furthermore, CAMPATH-1H induced complement-dependent cytotoxicity and antibody-dependent cellular cytotoxicity against CD52-positive EVI1(High) leukemia cells. After an intravenous injection of CAMPATH-1H into NOD/Shi-scid/IL-2Rγ;null mice with subcutaneous engraftment of EVI1(High) leukemia cells, tumor growth rates were significantly reduced, and the mice survived longer than those in the phosphate-buffered saline-injected control group. Thus, CAMPATH-1H is a potential therapeutic antibody for the treatment of patients with EVI1(High) leukemia.
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Affiliation(s)
- Y Saito
- Department of Medical Science, Division of Tumor and Cellular Biochemistry, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
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Kaneda K, Wakabayashi H, Sato D, Ohgi Y, Nomura T. The effect of self-determined pace on muscle activity and leg motion in water walking and deep-water running. J Sci Med Sport 2010. [DOI: 10.1016/j.jsams.2010.10.643] [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: 10/18/2022]
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Kikuchi H, Anan F, Kaneda K, Nawata T, Eshima N, Saikawa T, Yoshimatsu H. Interleukin-6 and silent cerebral infarction in hemodialysis patients: a cross-sectional study. Eur J Neurol 2010; 18:625-30. [PMID: 21040233 DOI: 10.1111/j.1468-1331.2010.03226.x] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND In patients with chronic renal failure undergoing hemodialysis (HD), silent cerebral infarctions (SCI) are associated with high mortality. Levels of interleukin-6 (IL-6) increase with renal dysfunction and may be a novel predictor for cerebrovascular events. We tested the hypothesis that increased IL-6 levels correlate with the occurrence of SCI in HD patients. METHODS Using cranial magnetic resonance imaging findings, we divided 50 Japanese patients undergoing HD into two groups: with SCI (60 ± 7 years, mean ± SD, n = 27) and without SCI (60 ± 6 years, n = 23). We compared the gender, body mass index, metabolic profiles, IL-6 levels, and smoking habits between the two groups. RESULTS We made the following observations: (i) The prevalence of diabetes or hypertension did not differ between the two groups, (ii) the level of IL-6 was higher in the with-SCI group than in the without-SCI group (P < 0.0001), (iii) the proportion of smokers was higher in the with-SCI group (P < 0.05), (iv) plasma level of high-density lipoprotein cholesterol was lower, whilst uric acid level was higher, in the with-SCI group (P < 0.05 and P < 0.05, respectively), and (v) multiple logistic regression analysis identified IL-6 levels as being significantly associated with the presence of SCI (odds ratio 3.13, 95% CI = 1.42-7.89, P < 0.0001). CONCLUSIONS This study indicates that patients with chronic renal failure who are maintained on HD exhibit an increased prevalence of SCI and that IL-6 is significantly associated with the presence of SCI in HD patients.
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Affiliation(s)
- H Kikuchi
- Department of Nephrology, Beppu Medical Center, Beppu, Japan
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32
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Kaneda K, Ohgi Y, Tanaka C. Cardio-respiratory responses and relationship to walking speed during free water walking in Japanese adults. J Sci Med Sport 2010. [DOI: 10.1016/j.jsams.2009.10.233] [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: 10/19/2022]
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33
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Morishima A, Kaneda K, Yoshida Y, Heima D, Hirao S, Nagasaka S, Yokoyama S, Nishiwaki N. [Coronary artery aneurysm with various clinical course]. Kyobu Geka 2009; 62:1145-1149. [PMID: 19999092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Case 1: A 77-year-old woman had effort angina pectoris. Coronary angiography (CAG) revealed a coronary artery aneurysm on the left descending artery. Coronary artery bypass grafting (CABG) and patch angioplasty for the aneurysm were performed. Case 2 : A 69-year-old woman had effort dyspnea CAG showed dilation of the left main trunk and beaded aneurysms (maximum 6 cm in diameter) behind the ascending aorta with a fistula to the right atrium. We closed the fistula and performed CABG to the circumflex branch. Case 3 : A 78-year-old woman had had general fatigue for 2 weeks. Previous CAG had revealed coronary artery aneurysms and current chest computered tomography revealed pericardial effusion. She was, therefore, diagnosed with the rupture of the coronary artery aneurysm. We closed the coronary artery aneurysm and performed CABG. Case 4: A 55-year-old man had been diagnosed with acute myocardial infarction and had undergone percutaneous coronary intervention 3 years before. CAG revealed a coronary artery aneurysm on the right coronary artery. We resected the aneurysm and interposed with saphenous vein graft. Although coronary artery aneurysm often has no symptoms, in the cases of angina, myocardial infarction, rupture or large aneurysm more than 3 times larger than the normal diameter, surgical repair should be considered.
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Affiliation(s)
- A Morishima
- Department of Cardiovascular Surgery, Nara Hospital Kinki University School of Medicine, Ikoma, Japan
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34
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Honda T, Aranishi E, Kaneda K. Facile Synthesis of a Benzindenoazepine Alkaloid, Bulgaramine, via Samarium Diiodide Promoted Ring Expansion of an α-Aminocarbonyl Compound. Org Lett 2009; 11:1857-9. [DOI: 10.1021/ol9004239] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Toshio Honda
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo 142-8501, Japan
| | - Eriko Aranishi
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo 142-8501, Japan
| | - Kyosuke Kaneda
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo 142-8501, Japan
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35
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36
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Sekigawa I, Yanagida M, Iwabuchi K, Kaneda K, Kaneko H, Takasaki Y, Jung G, Sone S, Tanaka Y, Ogawa H, Takamori K. Protein biomarker analysis by mass spectrometry in patients with rheumatoid arthritis receiving anti-tumor necrosis factor-alpha antibody therapy. Clin Exp Rheumatol 2008; 26:261-267. [PMID: 18565247] [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
OBJECTIVE To investigate the mechanism of action of anti-tumor necrosis factor-alpha (TNF-alpha) antibody in patients with rheumatoid arthritis (RA), we analyzed serum or plasma proteins by mass spectrometry system. METHODS Ten RA patients who received treatment with anti-TNF-alpha antibody were studied. Samples obtained before and after therapy were analyzed by a two-dimensional liquid chromatography tandem mass spectrometry (2D LC-MS/MS) system after pretreatment by a recently developed method to remove high molecular weight proteins. RESULTS Using this system, certain proteins were identified after treatment with anti-TNF-alpha antibody, including proteins related to the TNF-alpha-mediated pathway for nuclear factor kappa B (NF-kappaB) activation and/or to the metabolism (including regeneration) of articular cartilage. CONCLUSION Our mass spectrometry system appears to be useful for proteomic analysis. The efficacy of anti-TNF-alpha antibody therapy for RA may be related to various consequence of the inhibition of TNF-alpha activity.
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Affiliation(s)
- I Sekigawa
- Department of Internal Medicine, Juntendo University Urayasu Hospital, Chiba, Japan.
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37
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Kawasaki M, Kaneda K, Kaneko H, Sekigawa I, Takasaki Y, Ogawa H. Two cases of dermatomyositis associated with interstitial pneumonia: a comprehensive study of gene expression. Clin Exp Rheumatol 2008; 26:379-380. [PMID: 18565267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
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38
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Anan F, Masaki T, Fukunaga N, Teshima Y, Iwao T, Kaneda K, Umeno Y, Okada K, Wakasugi K, Yonemochi H, Eshima N, Saikawa T, Yoshimatsu H. Pioglitazone shift circadian rhythm of blood pressure from non-dipper to dipper type in type 2 diabetes mellitus. Eur J Clin Invest 2007; 37:709-14. [PMID: 17696960 DOI: 10.1111/j.1365-2362.2007.01854.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [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: 11/29/2022]
Abstract
BACKGROUND Insulin resistance significantly correlated with a non-dipper type of essential hypertension. Thiazolidinediones (TZD), oral hypoglycaemic agents that act as insulin sensitizers, have been demonstrated in multiple in vivo and in vitro studies to possess antihypertensive properties. This study examined the efficacy of TZD therapy with pioglitazone at transforming the circadian rhythms of blood pressure from a non-dipper to a dipper type. MATERIALS We examined 31 patients with type 2 diabetes mellitus during both a baseline period and a period of treatment with pioglitazone. Patients received 15 mg day(-1) pioglitazone for four weeks and 30 mg day(-1) for 12 weeks. Twenty-four hour ambulatory blood pressure monitoring (ABPM) and laboratory data (blood tests for cardiovascular risk factors) were obtained at the beginning and end of the study. RESULTS In non-dippers (n = 16), but not dippers (n = 15), we observed a significant interaction between pioglitazone therapy and nocturnal falls in systolic and diastolic blood pressure. This examination indicated that the magnitude of the nocturnal blood pressure fall was affected by pioglitazone therapy. In non-dippers, but not dippers, a significant correlation was observed between the percent decrease in nocturnal BP and the homeostasis model assessment (HOMA) index (r = 0.774, P = 0.0007). CONCLUSIONS The present study demonstrated that pioglitazone can restore the nocturnal BP declines in parallel to reductions in the HOMA index, suggesting that insulin resistance may play an important role in the genesis of circadian BP rhythms. TZD-based treatment may thus have the additional therapeutic advantage of reducing the risk of cardiovascular complications by transforming the circadian rhythm of BP.
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Affiliation(s)
- F Anan
- Faculty of Medicine, Oita University, Oita, Japan
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Abstract
Diastereoselective formal synthesis of a monoterpene alkaloid, (-)-incarvilline, the key intermediate for the synthesis of (-)-incarvillateine, was achieved by using an intramolecular Pauson-Khand reaction of (S)-N-[(E)-2-butenyl]-N-(3-butynyl-2-methoxymethoxy)-p-toluenesulfonamide as a key step.
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Affiliation(s)
- Toshio Honda
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo 142-8501, Japan.
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40
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Ikematsu M, Kaneda K, Takaoka D, Yasuda M. Laboratory studies on nitrogen and phosphorus removal from swine wastewater by iron electrolysis. Environ Technol 2007; 28:521-8. [PMID: 17615961 DOI: 10.1080/09593332808618809] [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: 05/16/2023]
Abstract
Biological process-free ("Bio-free") treatment of swine wastewater (pH 8.5 or above) for the removal of nitrogen and phosphorus was examined. In this study centrifugal separation of solids and liquids was followed by iron electrolysis, which enables removal of nitrogen and phosphorus when iron is set as the cathode and anode, respectively. The manner in which the treatment efficiency varies according to the current ratio of iron anode to iron cathode (Rac) was investigated. Nitrogen was removed to a level below 60 mg l(-1) in a 3-h treatment when Rac was above 75% and phosphorus was removed to a level below 8 mg l(-1) in the same period, irrespective of Rac. Nitrogen removal efficiency was 60 kWh kg-N(-1) , which is 6 times higher than that of the same electrolytic treatment when used after aerobic biological treatment ("Post-bio").
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Affiliation(s)
- M Ikematsu
- Human Ecology Research Center, Sanyo Electric Co., Ltd., 1-1-1 Sakata, Oizumi, Ora, Gunma 370-0596, Japan
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Sekigawa I, Kawasaki M, Ogasawara H, Kaneda K, Kaneko H, Takasaki Y, Ogawa H. DNA methylation: its contribution to systemic lupus erythematosus. Clin Exp Med 2007; 6:99-106. [PMID: 17061057 DOI: 10.1007/s10238-006-0103-x] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2006] [Accepted: 08/22/2006] [Indexed: 10/24/2022]
Abstract
Recent studies on epigenetics, including the methylation of DNA and the enzymes regulating methylation, seem likely to contribute to understanding the pathogenesis of autoimmune diseases such as systemic lupus erythematosus (SLE). In fact, the relationship between DNA methylation and SLE has long been the subject of investigation. To obtain a deeper understanding of the role of DNA methylation in the onset of SLE, we reviewed the findings reported in the literature and our own data about DNA methylation and SLE. Various studies have indicated the possible importance of DNA methylation, especially hypomethylation, in the aetiology of SLE. Epigenetic studies may provide clues for elucidating the pathogenesis of SLE and for developing new strategies to treat this disease.
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Affiliation(s)
- I Sekigawa
- Department of Internal Medicine, Juntendo University Urayasu Hospital, 2-1-1 Tomioka, Urayasu-shi, Chiba, 279-0021, Japan.
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42
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Kaneda K, Tachibana Y, Imanishi M, Kita H, Shigemoto R, Nambu A, Takada M. Down-regulation of metabotropic glutamate receptor 1alpha in globus pallidus and substantia nigra of parkinsonian monkeys. Eur J Neurosci 2006; 22:3241-54. [PMID: 16367790 DOI: 10.1111/j.1460-9568.2005.04488.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [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: 11/30/2022]
Abstract
Enhanced glutamatergic neurotransmission via the subthalamopallidal or subthalamonigral projection seems crucial for developing parkinsonian motor signs. In the present study, the possible changes in the expression of metabotropic glutamate receptors (mGluRs) were examined in the basal ganglia of a primate model for Parkinson's disease. When the patterns of immunohistochemical localization of mGluRs in monkeys administered systemically with 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) were analysed in comparison with normal controls, we found that expression of mGluR1alpha, but not of other subtypes, was significantly reduced in the internal and external segments of the globus pallidus and the substantia nigra pars reticulata. To elucidate the functional role of mGluR1 in the control of pallidal neuron activity, extracellular unit recordings combined with intrapallidal microinjections of mGluR1-related agents were then performed in normal and parkinsonian monkeys. In normal awake conditions, the spontaneous firing rates of neurons in the pallidal complex were increased by DHPG, a selective agonist of group I mGluRs, whereas they were decreased by AIDA, a selective antagonist of group I mGluRs, or LY367385, a selective antagonist of mGluR1. These electrophysiological data strongly indicate that the excitatory mechanism of pallidal neurons by glutamate is mediated at least partly through mGluR1. The effects of the mGluR1-related agents on neuronal firing in the internal pallidal segment became rather obscure after MPTP treatment. Our results suggest that the specific down-regulation of pallidal and nigral mGluR1alpha in the parkinsonian state may exert a compensatory action to reverse the overactivity of the subthalamic nucleus-derived glutamatergic input that is generated in the disease.
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Affiliation(s)
- K Kaneda
- Department of System Neuroscience, Tokyo Metropolitan Institute for Neuroscience, Tokyo Metropolitan Organization for Medical Research, Fuchu, Tokyo 183-8526, Japan
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Sudo H, Taneichi H, Kaneda K. Secondary medulla oblongata involvement following middle cervical spinal cord injury associated with latent traumatic instability in a patient with ossification of the posterior longitudinal ligament. Spinal Cord 2005; 44:126-9. [PMID: 16010272 DOI: 10.1038/sj.sc.3101803] [Citation(s) in RCA: 4] [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: 12/18/2022]
Abstract
STUDY DESIGN A case report. OBJECTIVES To report a rare case of extension of edema and hemorrhage from initial C4-5 spinal injury to the medulla oblongata. SETTING Center for Spinal Disorders and Injuries, Bibai Rosai Hospital, Japan. METHODS A 68-year-old man with ossification of the posterior longitudinal ligament (OPLL) had sustained tetraplegia after tumbling over a stone. Initially, the patient was diagnosed with an acute C4-5 spinal cord injury without radiological abnormalities and was treated conservatively. At 7 h after the injury, the patient had an ascending neurological deficit, which required respiratory assistance. Magnetic resonance imaging revealed a marked swelling of the spinal cord above C4-5 extending to the medulla oblongata. RESULTS Retrospective radiological assessment revealed that the spine was unstable at the injury level because of discontinuities in both anterior and posterior longitudinal ligaments. There was also signal intensity change within the retropharyngeal space at the C4-5 intervertebral disc. This injured segment was highly vulnerable to post-injury dynamic stenosis and easily sustained secondary neural damage. CONCLUSIONS This case report emphasizes a careful radiological assessment of latent structural instability in patients with OPLL in order to detect and prevent deteriorative change in the spinal cord.
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Affiliation(s)
- H Sudo
- Center for Spinal Disorders and Injuries, Bibai Rosai Hospital, Bibai, Japan
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Güner ES, Watanabe M, Kadosaka T, Polat E, Gargili A, Gulanber A, Ohashi N, Kaneda K, Imai Y, Masuzawa T. Seroepidemiology of Borrelia burgdorferi sensu lato and Anaplasma phagocytophilum in wild mice captured in northern Turkey. Epidemiol Infect 2005; 133:331-6. [PMID: 15816159 PMCID: PMC2870253 DOI: 10.1017/s0950268804003309] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
An expedition across the Asian part of the Black Sea coast and national parks of Northern Turkey was organized in the summer of 2001 to investigate the presence of Borrelia burgdorferi sensu lato (s.l.), Lyme borreliosis agent, and Anaplasma phagocytophilum, human granulocytic ehrlichiosis, agent, in wild mice. A total of 65 Apodemus flavicollis, Apodemus sylvaticus, Microtus epiroticus, Crocidura suaveolens and Mus macedonicus, were captured. Two out of 22 Apodemus sylvaticus specimens were seropositive for B. afzelii by enzyme-linked immunosorbent assay as confirmed by Western blotting, however cultures of skin and bladder samples from all small mammals in Barbour-Stoenner-Kelly's medium-II remained negative for B. burgdorferi s.l. All sera tested were negative for Anaplasma phagocytophilum by indirect immunofluorescent assay. The prevalence of B. burgdorferi s.l. and Anaplasma phagocytophilum is low in wild mice of the Asian part of Northern Turkey.
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Affiliation(s)
- E S Güner
- Department of Microbiology, Medical School, Yeditepe University, Istanbul, Turkey
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Kita H, Nambu A, Kaneda K, Tachibana Y, Takada M. Role of Ionotropic Glutamatergic and GABAergic Inputs on the Firing Activity of Neurons in the External Pallidum in Awake Monkeys. J Neurophysiol 2004; 92:3069-84. [PMID: 15486427 DOI: 10.1152/jn.00346.2004] [Citation(s) in RCA: 137] [Impact Index Per Article: 6.9] [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: 11/22/2022] Open
Abstract
The neurons in the external segment of the pallidum (GPe) in awake animals maintain a high level of firing activity. The level and pattern of the activity change with the development of basal ganglia disorders including parkinsonism and hemiballism. The GPe projects to most of the nuclei in the basal ganglia. Thus exploring the mechanisms controlling the firing activity is essential for understanding basal ganglia function in normal and pathological conditions. To explore the role of ionotropic glutamatergic and GABAergic inputs to the GPe, unit recordings combined with local injections of receptor antagonists were performed in awake monkeys. Observations on the effects of local application of the alpha-amino-3-hydroxy-5-methylisoxazole-4-propionic acid (AMPA)/kainate antagonist 1,2,3,4-tetrahydro-6-nitro-2, 3-dioxo-benzo[f]quinoxaline-7-sulfonamide, the N-methyl-d-aspartic acid (NMDA) antagonist 3-(2-carboxypiperazin-4-yl)-propyl-1-phosphonic acid, and the GABAA antagonist gabazine as well as the effects of muscimol blockade of the subthalamic nucleus on the spontaneous firing rate, firing patterns, and cortical stimulation induced responses in the GPe suggested the following: sustained glutamatergic and GABAergic inputs control the level of the spontaneous firing of GPe neurons; both AMPA/kainate and NMDA receptors are activated by glutamatergic inputs; some GPe neurons receive glutamatergic inputs originating from areas other than the subthalamic nucleus; no GPe neurons became silent after a combined application of glutamate and GABA antagonists, suggesting that GPe neurons have intrinsic properties or nonionotropic glutamatergic tonic inputs that sustain a fast oscillatory firing or a combination of a fast and a slow oscillatory firing in GPe neurons.
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Affiliation(s)
- H Kita
- Deprtmane of Anatomy and Neurobiology, College of Medicine, The University of Tennessee Memphis, 855 Monroe Ave., Memphis, TN 38163, USA.
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Asada Y, Arakawa S, Fujiwara S, Sato F, Kaneda K. High serum level of 5-S-cysteinyldopa in chronic renal failure does not always indicate melanoma progression. Br J Dermatol 2004; 151:515-6. [PMID: 15327571 DOI: 10.1111/j.1365-2133.2004.06096.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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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Abstract
[reaction: see text] A diastereoselective total synthesis of securinine in optically pure form was achieved by employing ring-closing metathesis of the corresponding dienyne compound as a key step.
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Affiliation(s)
- Toshio Honda
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41, Shinagawa-ku, Tokyo 142-8501, Japan.
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Tamura Y, Kaneda K, Nakayama Y. [Aortic dissection presenting with neurologic sign; report of a case]. Kyobu Geka 2003; 56:1123-5. [PMID: 14672023] [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: 04/27/2023]
Abstract
A 59-year-old man was admitted to our hospital for neurological deficit and left hemiplegia, presenting remission in the short time. Computed tomography(CT) of the brain was normal. CT of the chest showed a thoracoabdominal aortic dissection from the ascending aorta to the bilateral femoral artery, that involved all cervical arteries. The intimal flap separated the false and true lumens and there was flow in both lumens. That phenomenon can be due to the extension of the dissection along the aorta, occluding the origin of the cervical arteries and the change of the flow by the intimal flap. He was amputated his left leg below knee on the 1 postoperative day (POD), but discharged at 70 POD without neurologic complications.
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Affiliation(s)
- Y Tamura
- Department of Cardiovascular Surgery, Matsubara Tokushukai Hospital, Matsubara, Japan
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Fujita N, Kobayashi H, Tsuruta D, Sakaguchi I, Yamanaka K, Kutsuna H, Teramae H, Mizuno N, Ikeda N, Kato Y, Minamino M, Kaneda K, Ishii M. Induction of cutaneous delayed hypersensitivity reactions in mice sensitized with intragastrically administered hapten: activation of Langerhans cells in the sensitization and elicitation phases. Br J Dermatol 2003; 149:475-83. [PMID: 14510978 DOI: 10.1046/j.1365-2133.2003.05592.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND As seen in atopic dermatitis, allergic diseases often produce lesions both in the gastrointestinal tract and the skin, suggesting the involvement of an immunological relationship between the two organs in the pathogenesis. OBJECTIVES To study the role of gastric and epidermal Langerhans cells (LCs) in the sensitization and elicitation phases, respectively, of cutaneous delayed-type hypersensitivity (DTH) reactions to intragastrically administered hapten. METHODS BALB/c mice, which were subjected to intragastric administration of trinitrochlorobenzene 5 days previously, received an elicitative challenge of the same hapten to the ear skin. Sections of the ear were immunostained for CD4 and CD8. Epidermal sheets of the ear and epithelial sheets of the forestomach were immunostained for I-A and observed under a confocal laser scanning microscope. RESULTS Cutaneous DTH reactions were induced in mice, as demonstrated by an increase in ear thickness and a prominent infiltration of CD4+ and CD8+ lymphocytes at 24-36 h after the elicitative challenge. In the elicitation phase, epidermal LCs showed a significant increase in size, indicating in vivo activation, at 24 h. In the sensitization phase, gastric LCs increased in size at 2 h, became round at 6 h, and decreased in number at 24 h, possibly representing the sequential events of LC activation and migration from the epithelium. CONCLUSIONS The present study demonstrated that gastric LCs and epidermal LCs were activated in vivo in the sensitization and elicitation phases, respectively, of cutaneous DTH reactions in orally sensitized mice.
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Affiliation(s)
- N Fujita
- Departments of Dermatology and Anatomy, Graduate School of Medicine, Osaka City University, 1-4-3 Asahimachi, Abeno-ku, Osaka 545-8585, Japan.
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Kozuka T, Ishimaru F, Fujii K, Masuda K, Kaneda K, Imai T, Fujii N, Ishikura H, Hongo S, Watanabe T, Shinagawa K, Ikeda K, Niiya K, Harada M, Tanimoto M. Plasma stromal cell-derived factor-1 during granulocyte colony-stimulating factor-induced peripheral blood stem cell mobilization. Bone Marrow Transplant 2003; 31:651-4. [PMID: 12692604 DOI: 10.1038/sj.bmt.1703901] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
In this report, we examined plasma stromal cell-derived factor-1 levels in normal healthy donors for allogeneic peripheral blood stem cell transplantation (PBSCT) and in patients for autologous PBSCT using an enzyme-linked immunosorbent assay. The average level of plasma stromal cell-derived factor-1 was 2197 pg/ml before granulocyte colony-stimulating factor administration and 1899 pg/ml on day 4, demonstrating a significant decrease in the peripheral blood of healthy donors (P=0.0003). In patients for autologous PBSCT, a significant decrease of plasma stromal cell-derived factor-1 in the peripheral blood was also observed (P=0.0464). However, the physiologic gradient of stromal cell-derived factor-1 between peripheral blood and bone marrow was never inverted in normal healthy donors or in autologous PBSCT patients. Our results suggest that stromal cell-derived factor-1 may not be involved in the granulocyte colony-stimulating factor-induced release of CD34(+) cells to the peripheral blood. Further studies of a possible additive effect of granulocyte colony-stimulating factor and stromal cell-derived factor-1 are warranted.
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Affiliation(s)
- T Kozuka
- Second Deparment of Internal Medicine, Okayama University Medical School, Okayama, Japan
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