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Katsumata S, Hayashi Y, Oishi K, Tsukahara T, Inoue R, Obata A, Hirooka H, Kumagai H. Effects of liquefied sake lees on growth performance and faecal and blood characteristics in Japanese Black calves. Animal 2023; 17:100873. [PMID: 37399705 DOI: 10.1016/j.animal.2023.100873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 05/29/2023] [Accepted: 06/01/2023] [Indexed: 07/05/2023] Open
Abstract
Liquefied sake lees, a by-product of Japanese sake, is rich in Saccharomyces cerevisiae, proteins, and prebiotics derived from rice and yeast. Previous studies have reported that Saccharomyces cerevisiae fermentation products improved the health, growth, and faecal characteristics of preweaning calves. This study investigated the effects of adding liquefied sake lees to milk replacer on the growth performance, faecal characteristics, and blood metabolites of preweaning Japanese Black calves from 6 to 90 days of age. Twenty-four Japanese Black calves at 6 days of age were randomly assigned to one of three treatments: No liquefied sake lees (C, n = 8), 100 g/d (on a fresh matter basis) liquefied sake lees mixed with milk replacer (LS, n = 8), and 200 g/d (on a fresh matter basis) liquefied sake lees mixed with milk replacer (HS, n = 8). The intake of milk replacer and calf starter, as well as, the average daily gain did not differ between the treatments. The number of days counted with faecal score 1 in LS was higher than in HS (P < 0.05), while the number of days with diarrhoea medication in LS and C was lower than HS (P < 0.05). The faecal n-butyric acid concentration tended to be higher in LS compared to C (P = 0.060). The alpha diversity index (Chao1) was higher in HS than in C and LS at 90 days of age (P < 0.05). The principal coordinate analysis (PCoA) using weighted UniFrac distance showed that the bacterial community structures in faeces among the treatments at 90 days of age were significantly different (P < 0.05). The plasma β-hydroxybutyric acid concentration, an indicator of rumen development, was higher for LS than in C throughout the experiment (P < 0.05). These results suggested that adding liquefied sake lees up to 100 g/d (on a fresh matter basis) might promote rumen development in preweaning Japanese Black calves.
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Affiliation(s)
- S Katsumata
- Department of Applied Biosciences, Graduate School of Agriculture, Kyoto University, Sakyo, Kyoto 606-8502, Japan; Graduate School of Environmental, Life, Natural Science and Technology, Okayama University, Tsushima-naka, Okayama 700-8530, Japan.
| | - Y Hayashi
- Shiga Prefectural Livestock Production Technology Promotion Center, Hino, Shiga 529-1651, Japan
| | - K Oishi
- Department of Applied Biosciences, Graduate School of Agriculture, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - T Tsukahara
- Kyoto Institute of Nutrition and Pathology, Ujitawara, Kyoto 610-0231, Japan
| | - R Inoue
- Department of Applied Biological Sciences, Faculty of Agriculture, Setsunan University, Hirakata, Osaka 573-0101, Japan
| | - A Obata
- Shiga Prefectural Livestock Production Technology Promotion Center, Hino, Shiga 529-1651, Japan
| | - H Hirooka
- Department of Applied Biosciences, Graduate School of Agriculture, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - H Kumagai
- Department of Applied Biosciences, Graduate School of Agriculture, Kyoto University, Sakyo, Kyoto 606-8502, Japan
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Nagao T, Yasunishi K, Kumagai H, Kodani E, Kimura K. Correlation between warfarin control and daily vitamin K intake: The difference among VKORC1 genotype. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.529] [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: 10/25/2022]
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Wang L, Setoguchi A, Oishi K, Sonoda Y, Kumagai H, Irbis C, Inamura T, Hirooka H. PSVII-22 Environmental assessment of 36 intensive dairy farms in the Southwestern China based on life cycle assessment. J Anim Sci 2018. [DOI: 10.1093/jas/sky404.826] [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] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- L Wang
- Yangzhou University,Yangzhou, China (People’s Republic)
| | | | - K Oishi
- Kyoto University,Kyoto, Japan
| | | | | | - C Irbis
- Kunming University of Science and Technology,Yunnan, China (People’s Republic)
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Tagawa K, Ra SG, Kumagai H, Yoshikawa T, Yoshida Y, Takekoshi K, Sakai S, Miyauchi T, Maeda S. Effects of resistance training on arterial compliance and plasma endothelin-1 levels in healthy men. Physiol Res 2018; 67:S155-S166. [PMID: 29947536 DOI: 10.33549/physiolres.933818] [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: 01/23/2023] Open
Abstract
Arterial compliance (AC) is an index of the elasticity of large arteries. Endothelial dysfunction has been reported to result in reduced arterial compliance, which represents increased arterial stiffness. A reduction in AC is elicited by high-intensity resistance training, however the mechanisms are obscure. Because a single bout of resistance exercise causes a transient increase in circulating plasma endothelin-1 in humans, some vasoconstrictors may play a role in the mechanisms. The present study aimed to investigate whether resistance training-induced decrease in AC is associated with changes in circulating vasoconstrictors levels in young men. Young sedentary men were assigned to control (n=5) or training (n=9) groups. The training group performed four-week high-intensity resistance training (weight training exercise; three sessions/week). We measured AC and plasma levels of endothelin-1, angiotensin II, and norepinephrine before and after intervention. Resistance training significantly decreased AC, whereas the changes in plasma levels of neither endothelin-1, nor angiotensin II, nor norepinephrine were significantly different between the control and the training groups. Moreover, we found no significant correlations between changes in circulating plasma levels (endothelin-1, angiotensin II, and norepinephrine) and in the AC. Despite of no alteration of the resting circulating plasma levels (endothelin-1, etc.), we cannot exclude a possibility that the tissue/local concentrations of vasoconstrictors (endothelin-1, etc.) around the vessels might be increased and also involved in a reduction of AC in the training group. Taken together, the present results suggest that circulating vasoconstrictors (endothelin-1, etc.) in plasma are not involved in a reduction in AC by the resistance training.
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Affiliation(s)
- K Tagawa
- Graduate School of Comprehensive Human Sciences, University of Tsukuba, Japan, Division of Sports Medicine, Faculty of Health and Sport Science, University of Tsukuba, Japan.
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Miwa M, Oishi K, Anzai H, Kumagai H, Ieiri S, Hirooka H. Estimation of the energy expenditure of grazing ruminants by incorporating dynamic body acceleration into a conventional energy requirement system. J Anim Sci 2017; 95:901-909. [PMID: 28380599 DOI: 10.2527/jas.2016.0749] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The estimation of energy expenditure (EE) of grazing animals is of great importance for efficient animal management on pasture. In the present study, a method is proposed to estimate EE in grazing animals based on measurements of body acceleration of animals in combination with the conventional Agricultural and Food Research Council (AFRC) energy requirement system. Three-dimensional body acceleration and heart rate were recorded for tested animals under both grazing and housing management. An acceleration index, vectorial dynamic body acceleration (VeDBA), was used to calculate activity allowance (AC) during grazing and then incorporate it into the AFRC system to estimate the EE (EE derived from VeDBA [EE]) of the grazing animals. The method was applied to 3 farm ruminant species (7 cattle, 6 goats, and 4 sheep). Energy expenditure based on heart rate (EE) was also estimated as a reference. The result showed that larger VeDBA and heart rate values were obtained under grazing management, resulting in greater EE and EE under grazing management than under housing management. There were large differences between the EE estimated from the 2 methods, where EE values were greater than EE (averages of 163.4 and 142.5% for housing and grazing management, respectively); the EE was lower than the EE, whereas the increase in EE under grazing in comparison with housing conditions was larger than that in EE. These differences may have been due to the use of an equation for estimating EE derived under laboratory conditions and due to the presence of the effects of physiological, psychological, and environmental factors in addition to physical activity being included in measurements for the heart rate method. The present method allowed us to separate activity-specific EE (i.e., AC) from overall EE, and, in fact, AC under grazing management were about twice times as large as those under housing management for farm ruminant animals. There is evidence that the conventional energy system can predict fasting metabolism and the AC of housed animals based on accumulated research on energy metabolism and that VeDBA can quantify physical activity separately from other factors in animals on pasture. Therefore, the use of the VeDBA appears to be a precise way to predict activity-specific EE under grazing conditions, and the method incorporating acceleration index data with a conventional energy system can be a simple and useful method for estimation of EE in farm ruminants on pastures.
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Miwa M, Oishi K, Anzai H, Kumagai H, Ieiri S, Hirooka H. Estimation of the energy expenditure of grazing ruminants by incorporating dynamic body acceleration into a conventional energy requirement system. J Anim Sci 2017. [DOI: 10.2527/jas2016.0749] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Abstract
We evaluated the brain lesions of patients with chronic alcoholism (n = 34) in comparison with age- and sex-matched controls (n = 40) by MR imaging. T1-weighted sagittal and axial images and T2-weighted axial images were obtained with a 0.5 T superconducting MR unit. Various brain measurements were then performed, and the presence of regions of abnormal signal intensity was also compared between the two groups. The brain measurements revealed significant cerebral atrophy (characterized by lateral and 3rd ventricular dilatation, and widening of the interhemispheric fissure) as well as significant cerebellar atrophy (represented by 4th ventricular dilatation) in the alcoholic group. These changes were more prominent in patients in their fifties and sixties than in those aged in the thirties and forties. Focal hypointense lesions were observed in 20.6% of the alcoholics and in 5% of the controls (p < 0.01), while focal hyperintense lesions were observed in 61.8% of the alcoholics and in 20% of the controls (p < 0.001). The severity of these MR findings correlated well with the age of the patients. These observations suggest that alcohol is an important promotor of brain aging.
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Kumagai H, Fueki K, Yoshida-Kohno E, Wakabayashi N. Factors associated with mucosal pain in patients with partial removable dental prostheses. J Oral Rehabil 2016; 43:683-91. [PMID: 27289212 DOI: 10.1111/joor.12417] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/22/2016] [Indexed: 01/27/2023]
Abstract
The aim of this study was to investigate factors associated with mucosal pain in patients with partial removable dental prostheses (PRDPs). In this hospital-based cross-sectional study, 333 patients wearing 500 PRDPs (mean age 71·4 years, men 33·3%) were consecutively recruited from prosthetic clinic of a dental hospital in Japan. Subjects rated pain intensity and frequency of denture-bearing mucosa. An examiner recorded age, gender and systemic diseases as well as dental, mucosa, denture, sensory, behavioural- and psychological-related characteristics that were possibly associated with the mucosal pain. Multivariate analyses were performed to analyse factors related to mucosal pain. Pain intensity was rated as more than score 0 (presence) in 34·2% (171/500) PRDPs, and pain was experienced after denture delivery in 42·8% (214/500) PRDPs. Logistic regression analyses showed that younger age, mucosal damage, poor mucosal condition, bone prominence, poor residual ridge, higher pain sensitivity, presence of awake bruxism, perception of oral dryness, interim denture wear and high number of missing teeth were significant independent predictors for the presence of the mucosal pain intensity and/or frequency (P < 0·05). Multiple factors are associated with mucosal pain in patients with PRDPs. Oral mucosal characteristics, age, pain sensitivity and behavioural factors seem to be more critical for mucosal pain than distribution of missing teeth and number of abutment teeth.
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Affiliation(s)
- H Kumagai
- Tokyo Medical and Dental University - Removable Partial Prosthodontics, Tokyo, Japan
| | - K Fueki
- Tokyo Medical and Dental University - Removable Partial Prosthodontics, Tokyo, Japan
| | - E Yoshida-Kohno
- Tokyo Medical and Dental University - Removable Partial Prosthodontics, Tokyo, Japan
| | - N Wakabayashi
- Tokyo Medical and Dental University - Removable Partial Prosthodontics, Tokyo, Japan
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Nio K, Higashi D, Kumagai H, Arita S, Shirakawa T, Nakashima K, Shibata Y, Esaki M, Ueki T, Nakano M, Ariyama H, Kusaba H, Hirahashi M, Oda Y, Esaki T, Mitsugi K, Futami K, Akashi K, Baba E. 176P Safety analysis of chemotherapy for colitis-associated colorectal cancer in Japan. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv523.37] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Shirakawa T, Nakano M, Nio K, Tamura S, Kumagai H, Komoda M, Uchino K, Arita S, Ariyama H, Shibata Y, Kusaba H, Akashi K, Baba E. 520P Retrospective analysis of cardiovascular diseases in chemotherapies for advanced solid tumor patients in a single institution. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv535.15] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Iketaki Y, Oi H, Bokor N, Kumagai H. Note: Fabrication of resolution target for super-resolution microscopy. Rev Sci Instrum 2015; 86:086109. [PMID: 26329249 DOI: 10.1063/1.4929711] [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: 06/05/2023]
Abstract
We fabricated a resolution target for super-resolution microscopes (SRMs). The target was constructed by scattering a dyed photo-resist on a glass cover plate and used UV nano-imprinting to transfer minute line-and-space patterns on to the photo-resist layer. Using this resolution target, an image obtained from a SRM and its properties was evaluated quantitatively.
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Affiliation(s)
- Y Iketaki
- Olympus Corporation, 2-3 Kuboyama-cho, Hachioji 192-8512, Japan
| | - H Oi
- Kyodo International, Inc., 2-10-9, Miyazaki, Miyamae-ku, Kawasaki 216-0033, Japan
| | - N Bokor
- Department of Physics, Budapest University of Technology and Economics, Budafoki u. 8., Budapest 1111, Hungary
| | - H Kumagai
- Department of Medical Science, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara 252-0373, Japan
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Oshima N, Onimaru H, Matsubara H, Uchida T, Watanabe A, Takechi H, Nishida Y, Kumagai H. Uric acid, indoxyl sulfate, and methylguanidine activate bulbospinal neurons in the RVLM via their specific transporters and by producing oxidative stress. Neuroscience 2015. [PMID: 26208844 DOI: 10.1016/j.neuroscience.2015.07.055] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [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: 12/22/2022]
Abstract
Patients with chronic renal failure often have hypertension, but the cause of hypertension, other than an excess of body fluid, is not well known. We hypothesized that the bulbospinal neurons in the rostral ventrolateral medulla (RVLM) are stimulated by uremic toxins in patients with chronic renal failure. To investigate whether RVLM neurons are sensitive to uremic toxins, such as uric acid, indoxyl sulfate, or methylguanidine, we examined changes in the membrane potentials (MPs) of bulbospinal RVLM neurons of Wister rats using the whole-cell patch-clamp technique during superfusion with these toxins. A brainstem-spinal cord preparation that preserved the sympathetic nervous system was used for the experiments. During uric acid, indoxyl sulfate, or methylguanidine superfusion, almost all the RVLM neurons were depolarized. To examine the transporters for these toxins on RVLM neurons, histological examinations were performed. The uric acid-, indoxyl sulfate-, and methylguanidine-depolarized RVLM neurons showed the presence of urate transporter 1 (URAT 1), organic anion transporter (OAT)1 or OAT3, and organic cation transporter (OCT)3, respectively. Furthermore, the toxin-induced activities of the RVLM neurons were suppressed by the addition of an anti-oxidation drug (VAS2870, an NAD(P)H oxidase inhibitor), and a histological examination revealed the presence of NAD(P)H oxidase (nox)2 and nox4 in these RVLM neurons. The present results show that uric acid, indoxyl sulfate, and methylguanidine directly stimulate bulbospinal RVLM neurons via specific transporters on these neurons and by producing oxidative stress. These uremic toxins may cause hypertension by activating RVLM neurons.
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Affiliation(s)
- N Oshima
- Department of Nephrology and Endocrinology, National Defense Medical College, Tokorozawa, Saitama, Japan.
| | - H Onimaru
- Department of Physiology, Showa University School of Medicine, Tokyo, Japan
| | - H Matsubara
- Department of Nephrology and Endocrinology, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - T Uchida
- Department of Nephrology and Endocrinology, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - A Watanabe
- Department of Nephrology and Endocrinology, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - H Takechi
- Department of Nephrology and Endocrinology, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - Y Nishida
- Department of Physiology, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - H Kumagai
- Department of Nephrology and Endocrinology, National Defense Medical College, Tokorozawa, Saitama, Japan
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Hatazawa K, Kadotani M, Matsuzoe H, Tsuji T, Inoue M, Kumagai H, Takami K, Nakamura H, Norisada K, Ban C, Kaihotsu K, Nanahoshi M, Shimizu H, Ohnishi Y. Comparison of a Two-lead, Computerized, Resting ECG Signal Analysis Device, The Multifunction-Cardiogram((MCG), to Coronary Angiography or MDCT for The Detection of Prevalent Coronary Artery Stenosis. Am J Cardiol 2013. [DOI: 10.1016/j.amjcard.2013.01.116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Takami K, Yoshida A, Fukuzawa K, Takei A, Kiuchi K, Kanda G, Kumagai H, Takami M, Torii-Tanaka S, Itoh M, Imamura K, Fujiwara R, Suzuki A, Nakanishi T, Yamashita S, Matsumoto A, Hirata KI. Optimal Strength and Number of Shocks at Upper Limit of Vulnerability Testing Required to Predict High Defibrillation Threshold Without Inducing Ventricular Fibrillation. Circ J 2013; 77:2490-6. [DOI: 10.1253/circj.cj-13-0149] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Kaoru Takami
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine
| | - Akihiro Yoshida
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine
| | - Koji Fukuzawa
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine
| | - Asumi Takei
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine
| | - Kunihiko Kiuchi
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine
| | - Gaku Kanda
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine
| | - Hiroyuki Kumagai
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine
| | - Mitsuru Takami
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine
| | - Satoko Torii-Tanaka
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine
| | - Mitsuaki Itoh
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine
| | - Kimitake Imamura
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine
| | - Ryudo Fujiwara
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine
| | - Atsushi Suzuki
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine
| | - Tomoyuki Nakanishi
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine
| | - Soichiro Yamashita
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine
| | - Akinori Matsumoto
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine
| | - Ken-ichi Hirata
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine
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Yoshida T, Kumagai H, Suzuki A, Kobayashi N, Ohkawa S, Odamaki M, Kohsaka T, Yamamoto T, Ikegaya N. Relaxin ameliorates salt-sensitive hypertension and renal fibrosis. Nephrol Dial Transplant 2012; 27:2190-2197. [DOI: 10.1093/ndt/gfr618] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
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Koyanagi T, Kiyohara M, Matsui H, Yamamoto K, Kondo T, Katayama T, Kumagai H. Pyrosequencing survey of the microbial diversity of ‘narezushi’, an archetype of modern Japanese sushi. Lett Appl Microbiol 2011; 53:635-40. [DOI: 10.1111/j.1472-765x.2011.03155.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Tanaka S, Yoshida A, Fukuzawa K, Takei A, Kanda G, Takami K, Kumagai H, Takami M, Itoh M, Imamura K, Fujiwara R, Hirata KI. Recognition of inferiorly dislocated fast pathways guided by three-dimensional electro-anatomical mapping. J Interv Card Electrophysiol 2011; 32:95-103. [DOI: 10.1007/s10840-011-9595-8] [Citation(s) in RCA: 7] [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] [Received: 04/20/2011] [Accepted: 06/01/2011] [Indexed: 11/25/2022]
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Kushiyama T, Oda T, Yamada M, Higashi K, Yamamoto K, Oshima N, Sakurai Y, Miura S, Kumagai H. Effects of liposome-encapsulated clodronate on chlorhexidine gluconate-induced peritoneal fibrosis in rats. Nephrol Dial Transplant 2011; 26:3143-54. [DOI: 10.1093/ndt/gfr068] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Nagamatsu A, Murakami K, Yokota A, Yamazaki J, Yamauchi M, Kitajo K, Kumagai H, Tawara H. Space radiation damage to HDTV camera CCDs onboard the international space station. RADIAT MEAS 2011. [DOI: 10.1016/j.radmeas.2010.11.016] [Citation(s) in RCA: 9] [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: 11/24/2022]
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Nakamura H, Shimizu H, Kumagai H, Takami K, Ohnishi Y. The Efficacy and Safety of Open Irrigation Catheter in Pulmonary Vein Isolation for Atrial Fibrillation. J Arrhythm 2011. [DOI: 10.4020/jhrs.27.pj2_016] [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: 11/11/2022] Open
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Kumagai H, Tanaka Y, Murata M, Masuda Y, Shinagawa T. Novel TiO(2)/ZnO multilayer mirrors at 'water-window' wavelengths fabricated by atomic layer epitaxy. J Phys Condens Matter 2010; 22:474008. [PMID: 21386615 DOI: 10.1088/0953-8984/22/47/474008] [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: 05/30/2023]
Abstract
We propose that novel oxide superlattice structures of crystalline TiO(2)/ZnO on sapphire substrates can be used for multilayer mirrors with high reflectivity at 2.734 nm. In the experimental study, both rutile TiO(2)(200) and wurtzite ZnO(001) thin films were grown epitaxially on the same sapphire (001) substrate by atomic layer epitaxy (ALE) at 450 °C. We also demonstrated that the novel oxide superlattice structure of 10-bilayer TiO(2)/ZnO on a sapphire substrate gave a high reflectivity of 29.4% at 2.74 nm.
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Affiliation(s)
- H Kumagai
- Faculty of Engineering, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka-shi, Osaka 558-8585, Japan
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Tohda H, Sasaki M, Tada A, Hara F, Idiris A, Kumagai H. Schizosaccharomyces pombe minimum genome factory. J Biotechnol 2010. [DOI: 10.1016/j.jbiotec.2010.09.826] [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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Kumagai H, Nakano M, Maeda T, Yepes H, Palacios P, Ruiz M, Arrais S, Vaca M, Molina I, Yamashima T. Broadband seismic monitoring of active volcanoes using deterministic and stochastic approaches. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2009jb006889] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Yamamoto K, Tsuji Y, Matsushita S, Kumagai H, Tochikura T. Purification and Properties of beta-N-Acetylhexosaminidase from Mucor fragilis Grown in Bovine Blood. Appl Environ Microbiol 2010; 51:1019-23. [PMID: 16347047 PMCID: PMC239004 DOI: 10.1128/aem.51.5.1019-1023.1986] [Citation(s) in RCA: 14] [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: 11/20/2022] Open
Abstract
Mucor fragilis grown on bovine blood powder as the sole carbon source abundantly produced beta-N-acetylhexosaminidase. The enzyme activity was several times higher than that of a culture obtained with glucose medium. The enzyme had two different molecular weight forms. The high-molecular-weight form had somewhat higher beta-N-acetylgalactosaminidase activity than the lower-molecular-weight enzyme which had beta-N-acetylgalactosaminidase activity equivalent to about 40% of its beta-N-acetylglucosaminidase activity. Bovine blood seemed to induce both enzymes, but N-acetylamino sugars specifically induced the low-molecular-weight form. N-Acetylgalactosamine had an especially marked effect on activity. The low-molecular-weight form of enzyme was purified from the culture filtrate by fractionation with ammonium sulfate and various column chromatographies. The purified enzyme was found to be homogeneous by polyacrylamide gel electrophoresis. The optimum pH was 4.0 to 5.0 for beta-N-acetylglucosaminidase activity and 5.5 to 6.5 for beta-N-acetylgalactosaminidase activity. The enzyme hydrolyzed natural substrates such as di-N-acetylchitobiose, tri-N-acetylchitotriose, and a glycopeptide obtained by modification of fetuin.
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Affiliation(s)
- K Yamamoto
- Department of Food Science and Technology, Faculty of Agriculture, Kyoto University, Kyoto 606, and Institute of Soy Sauce, Higashimaru Shoyu Co. Ltd., Tatsuno, Hyogo 679-41, Japan
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Ono R, Kumagai H, Nakajima H, Hishiya A, Taki T, Horikawa K, Takatsu K, Satoh T, Hayashi Y, Kitamura T, Nosaka T. Mixed-lineage-leukemia (MLL) fusion protein collaborates with Ras to induce acute leukemia through aberrant Hox expression and Raf activation. Leukemia 2009; 23:2197-209. [PMID: 19710696 DOI: 10.1038/leu.2009.177] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Mixed-lineage-leukemia (MLL) fusion oncogenes are closely involved in infant acute leukemia, which is frequently accompanied by mutations or overexpression of FMS-like receptor tyrosine kinase 3 (FLT3). Earlier studies have shown that MLL fusion proteins induced acute leukemia together with another mutation, such as an FLT3 mutant, in mouse models. However, little has hitherto been elucidated regarding the molecular mechanism of the cooperativity in leukemogenesis. Using murine model systems of the MLL-fusion-mediated leukemogenesis leading to oncogenic transformation in vitro and acute leukemia in vivo, this study characterized the molecular network in the cooperative leukemogenesis. This research revealed that MLL fusion proteins cooperated with activation of Ras in vivo, which was substitutable for Raf in vitro, synergistically, but not with activation of signal transducer and activator of transcription 5 (STAT5), to induce acute leukemia in vivo as well as oncogenic transformation in vitro. Furthermore, Hoxa9, one of the MLL-targeted critical molecules, and activation of Ras in vivo, which was replaceable with Raf in vitro, were identified as fundamental components sufficient for mimicking MLL-fusion-mediated leukemogenesis. These findings suggest that the molecular crosstalk between aberrant expression of Hox molecule(s) and activated Raf may have a key role in the MLL-fusion-mediated-leukemogenesis, and may thus help develop the novel molecularly targeted therapy against MLL-related leukemia.
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Affiliation(s)
- R Ono
- Division of Hematopoietic Factors, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
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Krum D, Hare J, Delavelle A, Soubelet E, Vaillant R, Belanger B, Choudhuri I, Sra J, Pandozi C, Dottori S, Ficili S, Galeazzi M, Lavalle C, Pandozi A, Russo M, Santini M, Berger T, Pehboeck D, Stuehlinger M, Dichtl W, Silye R, Takami M, Yoshida A, Fukuzawa K, Takami K, Kumagai H, Tanaka S, Itoh M, Hirata K, Ficili S, Pandozi C, Galeazzi M, Russo M, Lavalle C, Bernardi C, Amati F, Santini M, Tanaka S, Yoshida A, Fukuzawa K, Takami K, Kumagai H, Takami M, Itoh M, Hirata K, De Ponti R, Marazzi R, De Luca L, De Sanctis V, Caravati F, Panchetti L, Salerno-Uriarte JA, Luik A, Wondraschek R, Merkel M, Schmitt C, Marazzi R, De Ponti R, Lumia D, Lunardi L, Cremona V, Fugazzola C, Salerno-Uriarte JA, Pandozi C, Dottori S, Ficili S, Galeazzi M, Lavalle C, Russo M, Camastra GS, Santini M. Poster Session 1: New tools for ablation. Europace 2009. [DOI: 10.1093/europace/euq216] [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: 11/14/2022] Open
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Kanyinji F, Kumagai H, Maeda T, Kaneshima S, Yokoi D. Effects of supplementary inosine on nutrient digestibility, ruminal fermentation and nitrogen balance in goats fed high amount of concentrate. Anim Feed Sci Technol 2009. [DOI: 10.1016/j.anifeedsci.2009.03.004] [Citation(s) in RCA: 5] [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: 11/30/2022]
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Potpara T, Grujic M, Ostojic M, Vujisic B, Polovina M, Mujovic N, Hatzinikolaou-Kotsakou E, Reppas E, Beleveslis TH, Moschos G, Kotsakou M, Tsakiridis K, Simeonidou E, Papandreou A, Tsigas G, Michalakeas C, Tsitlakidis C, Alexopoulos D, Lekakis J, Kremastinos DT, Poci D, Backmn L, Karlsson TH, Edvardsson N, Golzio PG, Vinci M, Amellone C, Jorfida M, Veglio V, Gaido E, Trevi GP, Bongiorni MG, Ding L, Hua WEI, Zhang SHU, Chen KEPING, Wang FZ, Chen XIN, Dokumaci B, Dokumaci AS, Ozyildirim S, Yolcu M, Uyan C, Nicolas-Franco S, Rodriguez Gonzalez J, Albacete-Moreno C, Ruiz-Villa G, Sanchez-Martos A, Bixquert-Genoves D, Skoczynski P, Gajek J, Zysko D, Porebska M, Josiak K, Mazurek W, Providencia RA, Silva J, Seca L, Gomes PL, Barra S, Mota P, Nascimento J, Leitao-Marques AM, Kikuchi Y, Brady PA, Erne P, Val-Mejias J, Schwab J, Schimpf R, Orlov M, Mattioni T, Amlie J, Sacher F, Lahitton B, Laborderie J, Wright M, Haissaguerre M, Berger T, Zwick R, Dichtl W, Stuehlinger M, Pachinger O, Hintringer F, Toli K, Koutras K, Stauropoulos J, Vichos S, Mantas J, Rodriguez Artuza CR, Hidalgo L JA, Garcia A, Fumero P, Perez A, Rangel I, Providencia RA, Silva J, Seca L, Gomes PL, Nascimento J, Leitao-Marques AM, Perl S, Stiegler P, Kollmann A, Rotman B, Lercher P, Anelli-Monti M, Tscheliessnigg KH, Pieske BM, Nakamura K, Naito S, Kumagai K, Goto K, Iwamoto J, Funabashi N, Oshima S, Komuro I, Toli K, Stavropoulos J, Koutras D, Vichos S, Mantas J, Di Biase L, Beheiry S, Hongo R, Horton R, Morganti K, Hao S, Javier Sanchez J, Natale A, Digby G, Parfrey B, Morriello F, Lim L, Hopman WM, Simpson CS, Redfearn DP, Baranchuk A, Madsen T, Schmidt EB, Toft E, Christensen JH, Patel D, Shaheen M, Sonne K, Mohanty P, Dibiase L, Horton RP, Sanchez JE, Natale A, Krynski T, Stec SM, Stanke A, Baszko A, Kulakowski P, Rondano E, Bortnik M, Occhetta E, Teodori G, Caimmi PP, Marino PN, Osmancik P, Peroutka Z, Herman D, Stros P, Budera P, Straka Z, Petrac D, Radeljic V, Delic-Brkljacic D, Manola S, Pavlovic N, Inama G, Pedrinazzi C, Adragao P, Arribas F, Landolina M, Merino JL, De Sousa J, Gulizia M, Neuzil P, Holy F, Skoda J, Petru J, Sediva L, Kralovec S, Brada J, Taborsky M, Takami M, Yoshida A, Fukuzawa K, Takami K, Kumagai H, Tanaka S, Itoh M, Hirata K, Jacques F, Champagne J, Doyle D, Charbonneau E, Dagenais F, Voisine P, Dumont E, Aboelhoda A, Nawar M, Khadragui I, Loutfi M, Ramadan B, Makboul G, Gianfranchi L, Pacchioni F, Bettiol K, Alboni P, Gallardo Lobo R, Pap R, Bencsik G, Makai A, Marton G, Saghy L, Forster T, Stockburger M, Trautmann F, Nitardy A, Just-Teetzmann M, Schade S, Celebi O, Krebs A, Dietz R, Pastore CA, Douglas RA, Samesima N, Martinelli Filho M, Nishioka SAD, Pastor Fuentes A, Perea J, Tur N, Berzal B, Boldt LH, Polotzki M, Posch MG, Perrot A, Lohse M, Rolf S, Ozcelik C, Haverkamp W, Tunyan LG, Grigoryan SV, Barsheshet A, Abu Sham'a R, Kuperstein R, Feinberg MS, Sandach A, Luria D, Eldar M, Glikson M, Vatasescu RG, Berruezo A, Iorgulescu C, Fruntelata A, Dorobantu M, Chaumeil A, Philippon F, O'hara G, Blier L, Molin F, Gilbert M, Champagne J, Paslawska U, Gajek J, Zysko D, Noszczyk-Nowak A, Skrzypczak P, Nicpon J, Mazurek W, Chevallier S, Van Oosterom A, Pruvot E, Iga A, Igarashi M, Itou H, Fujino T, Tsubota T, Yamazaki J, Yoshihara K, Arsenos P, Gatzoulis K, Dilaveris P, Gialernios T, Papaioannou T, Masoura K, Archontakis S, Stefanadis C, Nasr GM, Khashaba A, Osman H, El-Barbary M, Heinke M, Heinke T, Ismer B, Kuehnert H, Surber R, Figulla HR. Poster session 3: Miscellaneous. Europace 2009. [DOI: 10.1093/europace/euq230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Yamashita M, Yamauchi K, Chiba R, Iwama N, Date F, Shibata N, Kumagai H, Risteli J, Sato S, Takahashi T, Ono M. The definition of fibrogenic processes in fibroblastic foci of idiopathic pulmonary fibrosis based on morphometric quantification of extracellular matrices. Hum Pathol 2009; 40:1278-87. [PMID: 19386353 DOI: 10.1016/j.humpath.2009.01.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2008] [Revised: 01/27/2009] [Accepted: 01/30/2009] [Indexed: 11/28/2022]
Abstract
There is limited information regarding the process of tissue remodeling in fibroblastic foci associated with idiopathic pulmonary fibrosis. The aim of this study was to identify the different pathologic stages of tissue remodeling in fibroblastic foci based on the histopathologic differences in the glycosaminoglycan distribution and collagen deposition. In addition, we also aimed at clarifying the stage-specific characteristics by taking into consideration the expression pattern of matrix metalloproteinase and angiogenesis. Lung biopsies of 16 patients with idiopathic pulmonary fibrosis were used. The presence of glycosaminoglycans was detected by Alcian blue staining, and type I collagen was detected by immunohistochemical analysis with a primary antibody specific to the cross-linked carboxyterminal telopeptide of type I collagen. The fibroblastic foci characterized by the expression intensity of Alcian blue and telopeptide of type I collagen were divided into 3 groups, namely, Alcian blue(+)telopeptide of type I collagen(weak), Alcian blue(+)telopeptide of type I collagen(+), and Alcian blue(weak)telopeptide of type I collagen(+); consequently, 3 new stages were defined--stages I, II, and III, respectively. A significant inverse correlation was observed between the area densities of Alcian blue(+) and telopeptide of type I collagen(+) in fibroblastic foci. Stage I was characterized by the expression of matrix metalloproteinase-2 and tissue inhibitor of matrix metalloprotease-2 in fibroblasts and the overlying epithelium of fibroblastic foci, and also the absence of capillary angiogenesis. In contrast, the expression of these proteins was attenuated in stage III, except for that of matrix metalloproteinase-2 in fibroblasts. In stages II and III, capillary angiogenesis was observed. Lymphangiogenesis was undetected in all the 3 stages. Thus, pathologic staging helps understand the roles of the factors involved in tissue remodeling in idiopathic pulmonary fibrosis.
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Affiliation(s)
- Masahiro Yamashita
- Department of Pathology, Tohoku University Graduate School of Medicine, Sendai, Miyagi 980-8575, Japan.
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Kikuhara K, Kumagai H, Hirooka H. Development and Evaluation of a Simulation Model for Dairy Cattle Production Systems Integrated with Forage Crop Production. Asian Australas J Anim Sci 2009. [DOI: 10.5713/ajas.2009.80098] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Kaneko I, Suzuki K, Matsuo K, Kumagai H, Owada Y, Noguchi N, Hishinuma T, Ono M. Cysteinyl Leukotrienes Enhance the Degranulation of Bone Marrow-Derived Mast Cells through the Autocrine Mechanism. TOHOKU J EXP MED 2009; 217:185-91. [DOI: 10.1620/tjem.217.185] [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: 11/18/2022]
Affiliation(s)
- Izumi Kaneko
- Department of Pathology, Tohoku University Graduate School of Medicine
| | - Kaori Suzuki
- Division of Clinical Pharmacy, Tohoku University Graduate School of Pharmaceutical Sciences
| | - Kaori Matsuo
- Division of Biomedical Engineering for Health and Welfare, Tohoku University Graduate school of Biomedical Engineering
| | - Hiroyuki Kumagai
- Department of Pathology, Tohoku University Graduate School of Medicine
| | - Yuji Owada
- Department of Organ Anatomy, Yamaguchi University Graduate School of Medicine
| | - Naoya Noguchi
- Department of Biochemistry, Tohoku University Graduate School of Medicine
| | - Takanori Hishinuma
- Division of Pharmacotherapy, Tohoku University Graduate School of Pharmaceutical Sciences
| | - Masao Ono
- Department of Pathology, Tohoku University Graduate School of Medicine
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Katafuchi R, Ninomiya T, Mizumasa T, Ikeda K, Kumagai H, Nagata M, Hirakata H. The improvement of renal survival with steroid pulse therapy in IgA nephropathy. Nephrol Dial Transplant 2008. [DOI: 10.1093/ndt/gfp090] [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: 11/14/2022] Open
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33
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Tsukahara Y, Choumei Y, Oishi K, Kumagai H, Kahi AK, Panandam JM, Mukherjee TK, Hirooka H. Effect of parental genotypes and paternal heterosis on litter traits in crossbred goats. J Anim Breed Genet 2008; 125:84-8. [PMID: 18363973 DOI: 10.1111/j.1439-0388.2007.00692.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The effect of parental genotype and paternal heterosis on litter size (LS), total litter birth weight (TLW) and average litter birth weight (ALW) was analysed utilizing data from a crossbreeding programme involving the exotic German Fawn goats and local Katjang goats in Malaysia. In this study, these traits were regarded as traits of the litter to consider the effect of service sire genotype. The results revealed that LS was significantly influenced by the genotype of sire. The genotypes of sire and dam had significant effects on TLW and ALW. Estimates of crossbreeding parameter showed significant and negative influence of paternal heterosis on TLW and ALW while there was no significant effect of paternal heterosis on LS. The results of this study stress the need to reconsider the use of local males in the tropics.
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Affiliation(s)
- Y Tsukahara
- Laboratory of Animal Husbandry Resources, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto-shi, Japan
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Irie M, Wada K, Suzuki H, Yamada C, Kumagai H, Hiratake J, Fukuyama K. Crystal structures of Esherichia coliγ-glutamyltranspeptidase in complex with glutamine antagonists. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308091228] [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: 11/10/2022] Open
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35
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Fukuzawa K, Yoshida A, Kubo S, Takano T, Kiuchi K, Kanda G, Takami K, Kumagai H, Torii S, Takami M, Yokoyama M, Hirata KI. Endocardial substrate mapping for monomorphic ventricular tachycardia ablation in ischemic and non-ischemic cardiomyopathy. Kobe J Med Sci 2008; 54:E122-E135. [PMID: 18772614] [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: 05/26/2023]
Abstract
We investigated the differences in the endocardial substrates between ischemic cardiomyopathy (ICM) and non-ICM (NICM) by using electro-anatomical mapping and pace-mapping. We studied 18 patients (ICM and NICM, 9 each) with monomorphic ventricular tachycardia (VT) documented by 12-leads ECG. Low voltage area was defined by signal amplitude <1.5 mV. A pace-map QRS morphology that matched VT in >10 of the 12-leads ECG was regarded as a pace-map match. And conduction delay during pace-mapping was defined as the stimulus to QRS interval >or=40 ms. Low voltage area was 53.8 +/- 21.5 and 20.8 +/- 16.7 cm2 in ICM and NICM patients, respectively (P = 0.002). Pace-mapping was assessed in 6 ICM and 9 NICM. Pace-map match with conduction delay were obtained in all the 6 ICM patients. But in NICM patients, pace-map match with conduction delay was obtained in 3 patients. Pace-map match sites where conduction delay was not observed were obtained in 5 patients. Pace-map match could not be obtained in 1 patient. We attempted ablation in 6 ICM and 7 NICM patients. Subsequently, VT recurrence was not observed in ICM but it was observed in 6 of 7 NICM patients (log-rank P = 0.0016). In NICM patients, the arrhythmogenic substrate that represented the abnormal electrogram and conduction delay was observed less within the endocardial surface when compared with that observed in ICM. VT recurrence rate subsequent to endocardial ablation was higher in NICM than in ICM patients.
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Affiliation(s)
- Koji Fukuzawa
- Department of internal medicine, Division of Cardiovascular Medicine, Kobe University Graduate School of Medicine, Kobe, Japan.
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Kumagai H, Umekita M, Sawa R, Takahashi Y, Arisawa A, Isshiki K, Nishimura Y, Akamatsu Y. Generation of New Benanomicin Analogues by Biotransformation Using Escherichia coli Expressing Actinomycete Cytochrome P450. J Antibiot (Tokyo) 2008; 61:394-9. [DOI: 10.1038/ja.2008.55] [Citation(s) in RCA: 5] [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: 11/09/2022]
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Hara T, Yamada S, Hayashi T, Ikeda Y, Yamashiro K, Mizutani K, Iwata S, Okajima K, Tsukishiro Y, Matsumoto K, Akagami T, Kumagai H, Kinugasa M, Inoue M, Murai N, Izawa I, Kajiya T. Accuracy of nonstenotic coronary atherosclerosis assessment by multi-detector computed tomography. Circ J 2007; 71:911-4. [PMID: 17526989 DOI: 10.1253/circj.71.911] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND The ability to evaluate coronary stenosis using multi-detector computed tomography (MDCT) has been well discussed. In contrast, several studies demonstrated that the plaque burden measured by intravascular ultrasound (IVUS) has a relationship to the risk of cardiovascular events. the accuracy of MDCT was studied to determine plaque and vessel size compared with IVUS. METHODS AND RESULTS Fifty-six proximal lesions (American College of Cardiology/American Heart Association classification: segment 1, 5, 6) from 33 patients were assessed using MDCT and IVUS. The plaque and vessel area were measured from the cross-sectional image using both MDCT and IVUS. Eight coronary artery lesions with motion artifacts and heavily calcified plaques were excluded from the analysis. The vessel and lumen size evaluated using MDCT were closely correlated with those evaluated by IVUS (R(2)=0.614, 0.750 respectively). Furthermore, there was a strong correlation between percentage plaque area assessed by MDCT and IVUS (R(2)=0.824). CONCLUSION MDCT can noninvasively quantify coronary atherosclerotic plaque with good correlation compared with IVUS in patients with atherosclerosis.
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Affiliation(s)
- Tetsuya Hara
- Division of Cardiovascular and Respiratory Medicine, Department of Internal Medicine, Kobe University Graduate School, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan.
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Hori M, Ishigame K, Aoki S, Kumagai H, Araki T. Diffusion Tensor Imaging and 3D Tractography of the Cervical Spinal Cord Using the ECG-Gated Line-scan Technique. A Feasibility Study. Neuroradiol J 2007; 20:574-9. [PMID: 24299949 DOI: 10.1177/197140090702000517] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2007] [Accepted: 08/15/2007] [Indexed: 11/15/2022] Open
Abstract
Diffusion tensor (DT) magnetic resonance (MR) imaging in addition to conventional MR images provide valuable information on the brain. This study compared line scan DT imaging with and without the ECG-gating technique to estimate clinical usefulness of the line scan diffusion tensor image (LSDTI) with ECG-gating in evaluating spinal cord diseases in vivo. First, five healthy volunteers participated in the comparison study. LSDWI was performed in three to five sagittal sections with a pulsed-field-gradient diffusion preparation pulse employing two different b-values (0 and 700 s/mm(2)) along six directions. Apparent diffusion coefficient (ADC) maps and fractional anisotropy (FA) were calculated and three-dimensional tract reconstruction and color schemes of the spinal cord were obtained. Image quality and the acquisition time of each LSDTI were compared. Second, LSDTI with ECG-gating was performed in eighteen patients with cervical spinal cord disorders and evaluated by two neuroradiologists. Images with the ECG-gated technique were all superior to those without ECG-gating. Mean extended time for LSDTI with ECG-gating was approximately two minutes. In clinical use, the ADC and FA of spinal cord in patients with cervical spondylotic myelopathy statically changed. Moreover, demonstration of fibers was correlated with clinical symptoms. ECG-gating technique is preferable to LSDTI. The ADC and FA measurements and 3D fiber tracking of LSDTI with ECG-gating are promising methods to estimate cervical spinal cord pathology in clinical use.
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Affiliation(s)
- M Hori
- Radiology Department, Toho University; Ota, Tokyo, Japan - -
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Kuge K, Iwakiri S, Endo Y, Yasuda N, Fukushima C, Kimura M, Shibuya H, Kumagai H, Hasegawa A. Detection of nuclear tracks comprising gold grains in nuclear emulsion by using gold deposition development method. RADIAT MEAS 2007. [DOI: 10.1016/j.radmeas.2007.06.013] [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: 11/27/2022]
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Lu Y, Kitaura J, Oki T, Komeno Y, Ozaki K, Kiyono M, Kumagai H, Nakajima H, Nosaka T, Aburatani H, Kitamura T. Identification of TSC-22 as a potential tumor suppressor that is upregulated by Flt3-D835V but not Flt3-ITD. Leukemia 2007; 21:2246-57. [PMID: 17690703 DOI: 10.1038/sj.leu.2404883] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [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: 11/08/2022]
Abstract
Transforming growth factor-beta (TGF-beta)-stimulated clone-22 (TSC-22) was originally isolated as a TGF-beta-inducible gene. In this study, we identified TSC-22 as a potential leukemia suppressor. Two types of FMS-like tyrosine kinase-3 (Flt3) mutations are frequently found in acute myeloid leukemia: Flt3-ITD harboring an internal tandem duplication in the juxtamembrane domain associated with poor prognosis and Flt3-TKD harboring a point mutation in the kinase domain. Comparison of gene expression profiles between Flt3-ITD- and Flt3-TKD-transduced Ba/F3 cells revealed that constitutive activation of Flt3 by Flt3-TKD, but not Flt3-ITD, upregulated the expression of TSC-22. Importantly, treatment with an Flt3 inhibitor PKC412 or an Flt3 small interfering RNA decreased the expression level of TSC-22 in Flt3-TKD-transduced cells. Forced expression of TSC-22 suppressed the growth and accelerated the differentiation of several leukemia cell lines into monocytes, in particular, in combination with differentiation-inducing reagents. On the other hand, a dominant-negative form of TSC-22 accelerated the growth of Flt3-TKD-transduced 32Dcl.3 cells. Collectively, these results suggest that TSC-22 is a possible target of leukemia therapy.
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Affiliation(s)
- Y Lu
- Division of Cellular Therapy, Advanced Clinical Research Center, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
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Toyo-oka T, Kumagai H. Cardiac troponin levels as a preferable biomarker of myocardial cell degradation. Adv Exp Med Biol 2007; 592:241-9. [PMID: 17278369 DOI: 10.1007/978-4-431-38453-3_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Affiliation(s)
- Teruhiko Toyo-oka
- Department of Molecular Cardiology, Tohoku University Bioengineering Research Organization (TUBERO), Tokyo, Japan
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Fujisaki K, Shohno Y, Yoshida T, Ono A, Mizumasa T, Kondoh H, Katsuragi I, Ikeda K, Kumagai H, Meno H, Nishid T, Tomita Y, Tominaga R. Acute renal infarction in a patient with left atrial myxoma. Clin Nephrol 2007; 67:53-7. [PMID: 17269601 DOI: 10.5414/cnp67053] [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: 11/18/2022] Open
Abstract
A 24-year-old male first attended our hospital with acute onset of right flank pain radiating to the right lower quadrant of the abdomen. A contrast-enhanced computer tomography (CT) scan showed renal infarction, and he was admitted immediately for treatment. On admission, the right lower abdominal pain diminished gradually. On the second day in hospital, a left atrial echogenic mass was detected which filled the left atrial cavity; it appeared to be a left atrial myxoma measuring 3.9+/-4.9 cm. The patient was immediately transferred and underwent emergency surgery. Histologic examination confirmed the diagnosis of myxoma. Post-operatively, he recovered well and was discharged from hospital without any further specific treatment.
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Affiliation(s)
- K Fujisaki
- Department of Medicine and Clinical Science, Division of Nephrology, Graduate School of Medical Sciences, Kyushu University, Maidashi 3-1-1, Higashi-ku, Fukuoka 812-8582, Japan.
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43
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Kumagai H, Ngampongsai W. Comparative studies on dry matter intake, digestibility and nitrogen metabolism between Thai native (TN) and Anglo Nubian×TN bucks. Small Rumin Res 2006. [DOI: 10.1016/j.smallrumres.2005.07.055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Kabir MK, Kawata S, Adachi K, Tobita H, Miyazaki N, Kumagai H, Katada M, Kitagawa S. Iron-Chloranilate Intercalation Compounds: Synthesis, Crystal Structures, and Thermal Properties. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/10587250008026187] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- M. K. Kabir
- a Department of Chemistry , Shizuoka University , 836 Oya, Shizuoka , 422-8529 , Japan
| | - S. Kawata
- a Department of Chemistry , Shizuoka University , 836 Oya, Shizuoka , 422-8529 , Japan
| | - K. Adachi
- a Department of Chemistry , Shizuoka University , 836 Oya, Shizuoka , 422-8529 , Japan
| | - H. Tobita
- b Department of Chemistry , Tokyo Metropolitan University , Minami Ohsawa, Hachiouji, Tokyo , 192-0397 , Japan
| | - N. Miyazaki
- a Department of Chemistry , Shizuoka University , 836 Oya, Shizuoka , 422-8529 , Japan
| | - H. Kumagai
- b Department of Chemistry , Tokyo Metropolitan University , Minami Ohsawa, Hachiouji, Tokyo , 192-0397 , Japan
| | - M. Katada
- b Department of Chemistry , Tokyo Metropolitan University , Minami Ohsawa, Hachiouji, Tokyo , 192-0397 , Japan
| | - S. Kitagawa
- c Department of Synthetic Chemistry and Biological Chemistry , Graduate School of Engineering, Kyoto University , Yoshida, Sakyo-ku, Kyoto , 606-8501 , Japan
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Nakayama M, Nagata M, Hirano T, Sugai K, Katafuchi R, Imayama S, Uesugi N, Tsuchihashi T, Kumagai H. Low-dose prednisolone ameliorates acute renal failure caused by cholesterol crystal embolism. Clin Nephrol 2006; 66:232-9. [PMID: 17063989 DOI: 10.5414/cnp66232] [Citation(s) in RCA: 16] [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: 11/18/2022] Open
Abstract
AIMS The prognosis of renal cholesterol crystal embolism (CCE) is poor. Although various treatments for CCE have been attempted, there is no optimal therapy. We tested the effect of low-dose prednisolone (PS) on CCE-related acute renal failure (ARF). PATIENTS AND METHODS 7 patients (mean age 69 years) diagnosed with CCE-related ARF were treated with oral PS at 15-20 mg/day for 2-4 weeks, which was then tapered at 5 mg/day over 2-4 weeks, followed by 5 mg/day maintenance dose. Recurrent ARF during PS tapering was treated with a larger dose of PS. RESULTS Inciting factors were identified in four patients: coronary angiography (n=3) and cerebral angiography (n=1). On admission, serum creatinine (SCr) was 2.1 +/- 0.3 mg/dl (mean +/- SEM). SCr and eosinophil count before treatment were 4.2 +/- 0.4 mg/dl and 682 +/- 73/microl, respectively. PS therapy improved ARF in all cases at week 2 (SCr 3.8 +/- 0.5 mg/dl) parallel to a decrease in eosinophilia (116 +/- 30/microl), and at week 4 (3.1 +/- 0.4 mg/dl and 134 +/- 20/microl, respectively). At last follow-up, renal function was improved or maintained in 5 patients compared with that at week 4 post-treatment. One patient died of lung cancer. Another required LDL apheresis and hemodialysis but died due to CCE-related multi-organ failure. A third patient had recurrent ARF and was re-treated with a larger dose of PS, which resulted in an immediate decrease in SCr. However, the patient developed acute renal dysfunction due to congestive heart failure, and required hemodialysis. CONCLUSIONS Low-dose PS improved CCE-related ARF, probably through amelioration of inflammatory reaction surrounding affected renal vessels.
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Affiliation(s)
- M Nakayama
- Division of Nephrology and Clinical Research Institute, Department of Internal Medicine, National Kyushu Medical Center Hospital, 1-8-1 Jigyohama, Chuo-ku, Fukuoka 810-8563, Japan.
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46
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Li S, Tanaka H, Wang HH, Yoshiyama S, Kumagai H, Nakamura A, Brown DL, Thatcher SE, Wright GL, Kohama K. Intracellular signal transduction for migration and actin remodeling in vascular smooth muscle cells after sphingosylphosphorylcholine stimulation. Am J Physiol Heart Circ Physiol 2006; 291:H1262-72. [PMID: 16899767 DOI: 10.1152/ajpheart.00901.2005] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [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: 11/22/2022]
Abstract
Molecular mechanisms underlying migration of vascular smooth muscle cells (VSMCs) toward sphingosylphosphorylcholine (SPC) were analyzed in light of the hypothesis that remodeling of the actin cytoskeleton should be involved. After SPC stimulation, mitogen-activated protein kinases (MAPKs), including p38 MAPK (p38) and p42/44 MAPK (p42/44), were found to be phosphorylated. Migration of cells toward SPC was reduced in the presence of SB-203580, an inhibitor of p38, but not PD-98059, an inhibitor of p42/44. Pertussis toxin (PTX), a Giprotein inhibitor, induced an inhibitory effect on p38 phosphorylation and VSMC migration. Myosin light chain (MLC) phosphorylation occurred after SPC stimulation with or without pretreatment with SB-203580 or PTX. The MLC kinase inhibitor ML-7 and the Rho kinase inhibitor Y-27632 inhibited MLC phosphorylation but only partially inhibited SPC-directed migration. Complete inhibition was achieved with the addition of SB-203580. After SPC stimulation, the actin cytoskeleton formed thick bundles of actin filaments around the periphery of cells, and the cells were surrounded by elongated filopodia, i.e., magunapodia. The peripheral actin bundles consisted of α- and β-actin, but magunapodia consisted exclusively of β-actin. Such a remodeling of actin was reversed by addition of SB-203580 and PTX, but not ML-7 or Y-27632. Taken together, our biochemical and morphological data confirmed the regulation of actin remodeling and suggest that VSMCs migrate toward SPC, not only by an MLC phosphorylation-dependent pathway, but also by an MLC phosphorylation-independent pathway.
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Affiliation(s)
- Sheng Li
- Department of Molecular and Cellular Pharmacology, Faculty of Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-Machi, Maebashi, Gunma 371-8511, Japan
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47
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Kawai Y, Kumagai H, Kurihara H, Yamazaki K, Sawano R, Inoue N. β-Glucosidase inhibitory activities of phenylpropanoid glycosides, vanicoside A and B from Polygonum sachalinense rhizome. Fitoterapia 2006; 77:456-9. [PMID: 16828242 DOI: 10.1016/j.fitote.2006.05.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2004] [Accepted: 05/11/2006] [Indexed: 11/21/2022]
Abstract
The phenylpropanoid glycosides, vanicoside A and B, isolated from rhizomes of giant knotweed (Polygonum sachalinense) showed beta-glucosidase inhibitory activity, with IC(50) values of 59.8 and 48.3 mug/ml (59.9 and 50.5 muM), respectively. In contrast, p-coumaric acid and ferulic acid, corresponding to phenylpropanoyl moieties of vanicosides, exhibited very little inhibition.
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Affiliation(s)
- Y Kawai
- Faculty of Fisheries Sciences, Hokkaido University, Hakodate, Hokkaido 041-8611, Japan.
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48
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Kouroku Y, Fujita E, Tanida I, Ueno T, Isoai A, Kumagai H, Ogawa S, Kaufman RJ, Kominami E, Momoi T. ER stress (PERK/eIF2alpha phosphorylation) mediates the polyglutamine-induced LC3 conversion, an essential step for autophagy formation. Cell Death Differ 2006; 14:230-9. [PMID: 16794605 DOI: 10.1038/sj.cdd.4401984] [Citation(s) in RCA: 733] [Impact Index Per Article: 40.7] [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: 12/11/2022] Open
Abstract
Expanded polyglutamine 72 repeat (polyQ72) aggregates induce endoplasmic reticulum (ER) stress-mediated cell death with caspase-12 activation and vesicular formation (autophagy). We examined this relationship and the molecular mechanism of autophagy formation. Rapamycin, a stimulator of autophagy, inhibited the polyQ72-induced cell death with caspase-12 activation. PolyQ72, but not polyQ11, stimulated Atg5-Atg12-Atg16 complex-dependent microtubule-associated protein 1 (MAP1) light chain 3 (LC3) conversion from LC3-I to -II, which plays a key role in autophagy. The eucaryotic translation initiation factor 2 alpha (eIF2alpha) A/A mutation, a knock-in to replace a phosphorylatable Ser51 with Ala51, and dominant-negative PERK inhibited polyQ72-induced LC3 conversion. PolyQ72 as well as ER stress stimulators upregulated Atg12 mRNA and proteins via eIF2alpha phosphorylation. Furthermore, Atg5 deficiency as well as the eIF2alpha A/A mutation increased the number of cells showing polyQ72 aggregates and polyQ72-induced caspase-12 activation. Thus, autophagy formation is a cellular defense mechanism against polyQ72-induced ER-stress-mediated cell death by degrading polyQ72 aggregates, with PERK/eIF2alpha phosphorylation being involved in polyQ72-induced LC3 conversion.
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Affiliation(s)
- Y Kouroku
- Division of Development, National Institute of Neuroscience, 4-1-1 Ogawahigashi-machi, Kodaira, Tokyo 187-8502, Japan
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Kumagai H, Yamashiro K, Mizutani K, Okajima K, Hayashi T, Ikeda Y, Yamada S, Iwata S, Tsukishiro Y, Matsumoto K, Akagami T, Inoue M, Murai N, Kinugasa M, Gen Y, Kajiya T, Kono A, Ishii K. AB50-4. Heart Rhythm 2006. [DOI: 10.1016/j.hrthm.2006.02.315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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50
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Yoshimoto Y, Kawada M, Kumagai H, Someno T, Inoue H, Kawamura N, Isshiki K, Ikeda D. New naphthoquinones, f13102A and B, from a fungus strain F-13102. J Antibiot (Tokyo) 2005; 58:590-3. [PMID: 16320763 DOI: 10.1038/ja.2005.80] [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: 11/09/2022]
Abstract
Deficiency of Fas-mediated apoptosis is one of the mechanisms involved in the immune evasion by tumors. Thus, it might be a practical approach for cancer treatment that Fas-mediated apoptosis in tumor cells is modified by drugs. In the course of screening, we have isolated two new naphthoquinones, f13102A and B, from the culture broth of fungus strain F-13102. Coumpound f13102A sensitizes Fas-resistant human lung adenocarcinoma A549 cells to apoptosis.
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Affiliation(s)
- Yuya Yoshimoto
- Drug Development Unit, Numazu Bio-Medical Research Institute, Microbial Chemistry Research Center, 18-24 Miyamoto, Numazu-shi, Shizuoka 410-0301, Japan
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