1
|
Ohue-Kitano R, Masujima Y, Nishikawa S, Iwasa M, Nishitani Y, Kawakami H, Kuwahara H, Kimura I. 3-(4-Hydroxy-3-methoxyphenyl) propionic acid contributes to improved hepatic lipid metabolism via GPR41. Sci Rep 2023; 13:21246. [PMID: 38040866 PMCID: PMC10692101 DOI: 10.1038/s41598-023-48525-3] [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: 09/05/2023] [Accepted: 11/27/2023] [Indexed: 12/03/2023] Open
Abstract
3-(4-hydroxy-3-methoxyphenyl) propionic acid (HMPA) is a metabolite produced by the gut microbiota through the conversion of 4-hydroxy-3-methoxycinnamic acid (HMCA), which is a widely distributed hydroxycinnamic acid-derived metabolite found abundantly in plants. Several beneficial effects of HMPA have been suggested, such as antidiabetic properties, anticancer activities, and cognitive function improvement, in animal models and human studies. However, the intricate molecular mechanisms underlying the bioaccessibility and bioavailability profile following HMPA intake and the substantial modulation of metabolic homeostasis by HMPA require further elucidation. In this study, we effectively identified and characterized HMPA-specific GPR41 receptor, with greater affinity than HMCA. The activation of this receptor plays a crucial role in the anti-obesity effects and improvement of hepatic steatosis by stimulating the lipid catabolism pathway. For the improvement of metabolic disorders, our results provide insights into the development of functional foods, including HMPA, and preventive pharmaceuticals targeting GPR41.
Collapse
Affiliation(s)
- Ryuji Ohue-Kitano
- Laboratory of Molecular Neurobiology, Graduate School of Biostudies, Kyoto University, Yoshidakonoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan.
- Laboratory of Molecular Endocrinology, Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto, 606-8501, Japan.
- Center for Living Systems Information Science (CeLiSIS), Kyoto University, Sakyo-ku, Kyoto, 606-8501, Japan.
| | - Yuki Masujima
- Laboratory of Molecular Neurobiology, Graduate School of Biostudies, Kyoto University, Yoshidakonoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Shota Nishikawa
- Laboratory of Molecular Endocrinology, Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Masayo Iwasa
- Laboratory of Molecular Neurobiology, Graduate School of Biostudies, Kyoto University, Yoshidakonoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Yosuke Nishitani
- Research Center, Maruzen Pharmaceuticals Co., Ltd., Fukuyama, Hiroshima, 729-3102, Japan
| | - Hideaki Kawakami
- Research Center, Maruzen Pharmaceuticals Co., Ltd., Fukuyama, Hiroshima, 729-3102, Japan
| | - Hiroshige Kuwahara
- Research Center, Maruzen Pharmaceuticals Co., Ltd., Fukuyama, Hiroshima, 729-3102, Japan
| | - Ikuo Kimura
- Laboratory of Molecular Neurobiology, Graduate School of Biostudies, Kyoto University, Yoshidakonoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan.
- Laboratory of Molecular Endocrinology, Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto, 606-8501, Japan.
- Department of Applied Biological Science, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Fuchu, Tokyo, 183-8509, Japan.
| |
Collapse
|
2
|
Enokida M, Minato KI, Yoshino S, Ohto N, Kuwahara H, Mizuno M. Oral administration of Lactiplantibacillus plantarum 22A-3 exerts anti-allergic activity against intestinal food allergy mouse models sensitized and challenged with ovalbumin. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.101785] [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]
|
3
|
Takemura A, Ohto N, Kuwahara H, Mizuno M. Sphingoid base in pineapple glucosylceramide suppresses experimental allergy by binding leukocyte mono-immunoglobulin-like receptor 3. J Sci Food Agric 2022; 102:2704-2709. [PMID: 34708420 PMCID: PMC9299474 DOI: 10.1002/jsfa.11610] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 08/13/2021] [Accepted: 10/28/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND The increase in patients suffering from type I hypersensitivity, including hay fever and food allergy, is a serious public health issue around the world. Recent studies have focused on allergy prevention by food factors with fewer side effects. The purpose of this study was to evaluate the effect of dietary glucosylceramide from pineapples (P-GlcCer) on type I hypersensitivity and elucidate mechanisms. RESULTS Oral administration of P-GlcCer inhibited ear edema in passive cutaneous anaphylaxis reaction. In a Caco-2/RBL-2H3 co-culture system, P-GlcCer inhibited β-hexosaminidase release from RBL-2H3 cells. The direct treatment of P-GlcCer on RBL-2H3 did not affect β-hexosaminidase release, but sphingoid base moiety of P-GlcCer did. These results predicted that sphingoid base, a metabolite of P-GlcCer, through the intestine inhibited type I hypersensitivity by inhibiting mast cell degranulation. In addition, the inhibitory effects of P-GlcCer on ear edema and degranulation of RBL-2H3 cells were canceled by pretreatment of leukocyte mono-immunoglobulin-like receptor 3 (LMIR3)-Fc, which can block LMIR3-mediated inhibitory signals. CONCLUSION It was demonstrated that a sphingoid base, one of the metabolites of P-GlcCer, may inhibit mast cell degranulation by binding to LMIR3. The oral administration of P-GlcCer is a novel and attractive food factor that acts directly on mast cells to suppress allergy. © 2021 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
Collapse
Affiliation(s)
- Ayumi Takemura
- Department of Agrobioscience, Graduate School of Agricultural ScienceKobe UniversityKobeJapan
| | | | | | - Masashi Mizuno
- Department of Agrobioscience, Graduate School of Agricultural ScienceKobe UniversityKobeJapan
| |
Collapse
|
4
|
Lamubol J, Ohto N, Kuwahara H, Mizuno M. Lactiplantibacillus plantarum 22A-3-induced TGF-β1 secretion from intestinal epithelial cells stimulated CD103 + DC and Foxp3 + Treg differentiation and amelioration of colitis in mice. Food Funct 2021; 12:8044-8055. [PMID: 34282811 DOI: 10.1039/d1fo00990g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
In the present study, we evaluated the anti-inflammatory properties of Lactiplantibacillus plantarum 22A-3 (LP22A3) and attempted to elucidate the underlying molecular mechanism. The oral administration of LP22A3 significantly inhibited body weight reduction and decreased colon shortening and colitis score in mice with dextran sulfate sodium (DSS)-induced colitis. It was demonstrated that the production of the active-form of TGF-β tended to increase in both the intestinal epithelial cells (IECs) of the ileum and serum but not in the colon of non-DSS-treated mice by LP22A3. IL-10 level in serum was also elevated by LP22A3-treatment. The mRNA expression of TGF-β, IL-10 and Foxp3 increased only in the small intestines of LP22A3-treated mice. Both the aldehyde dehydrogenase 1 family member A2 (Aldh1a2) mRNA expression and population of CD103+ dendritic cells (DCs) in the small intestine significantly increased in the LP22A3-treated group. LP22A3 induced TGF-β secretion from the IECs of the small intestine with retinoic acid production probably through TLR2, resulting in an increase in CD103+ DCs and the Foxp3+ Treg population. Both cells secrete a high level of anti-inflammatory cytokines, TGF-β and IL-10 contributing to the protective condition in the intestine and thus making it less susceptible to inflammation. This suggested that oral administration of LP22A-3 may be an alternative therapeutic strategy for IBD.
Collapse
Affiliation(s)
- Jarukan Lamubol
- Department of Agrobioscience, Graduate School of Agricultural Science, Kobe University, Kobe 657-8501, Japan.
| | | | | | | |
Collapse
|
5
|
Mizuno M, Ohto N, Kuwahara H. Lactiplantibacillus plantarum 22A-3 isolated from pickle suppresses ovalbumin-induced food allergy in BALB/c mice and 2,4-dinitrochlorobenzene-induced atopic dermatitis in NC/Nga mice. J Biosci Bioeng 2021; 132:271-278. [PMID: 34083121 DOI: 10.1016/j.jbiosc.2021.05.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 04/27/2021] [Accepted: 05/07/2021] [Indexed: 12/12/2022]
Abstract
In the previous study, pickle-derived Lactiplantibacillus plantarum 22A-3 (LP22A3) suppressed ear edema in passive cutaneous anaphylaxis by its oral administration. Moreover, LP22A3 treatment directly to RBL-2H3 cells shows no effect on β-hexosaminidase release from RBL-2H3 but inhibited its release using the Caco-2/RBL-2H3 cells co-culture system stimulated with LP22A3 from the apical side. In this study, oral administration of LP22A3 decreased total IgE and ovalbumin (OVA) specific IgE contents in blood of BALB/c mice induced food allergy by OVA. Moreover, its oral administration suppressed the development of dermatitis induced by 2,4-dinitrochlorobenzene (DNCB) which was used to develop atopic dermatitis-like lesions in NC/Nga mice. This alleviation was further correlated with a reduction of elevated serum total IgE, transepidermal water loss and elevated acanthosis in the LP22A3-treated group compared with vehicle-treated positive group. In co-culture system composed of Caco-2 and RBL-2H3 cells, LP22A3 treatment on apical side before or after the sensitization with anti-dinitrophenyl (DNP) IgE antibody indicated the different effect on β-hexosaminidase release from RBL-2H3. Its treatment before the sensitization decreased β-hexosaminidase release, but not after sensitization, indicating that LP22A3 affected mast cells sensitized with allergen through intestinal epithelial cells. These results suggest that LP22A3 may have a potential therapeutic property for Type 1 hypersensitivity and atopic dermatitis.
Collapse
Affiliation(s)
- Masashi Mizuno
- Department of Agrobioscience, Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan.
| | - Nobuaki Ohto
- Maruzen Pharmaceuticals Co. Ltd., 1089-8 Sagata, Shinnichi-cho, Fukuyama 729-3102, Japan
| | - Hiroshige Kuwahara
- Maruzen Pharmaceuticals Co. Ltd., 1089-8 Sagata, Shinnichi-cho, Fukuyama 729-3102, Japan
| |
Collapse
|
6
|
Yoshino S, Tagawa T, Awa R, Ogasawara J, Kuwahara H, Fukuhara I. Polymethoxyflavone purified from Kaempferia parviflora reduces visceral fat in Japanese overweight individuals: a randomised, double-blind, placebo-controlled study. Food Funct 2021; 12:1603-1613. [PMID: 33475663 DOI: 10.1039/d0fo01217c] [Citation(s) in RCA: 4] [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] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Visceral fat is a more important factor in obesity-associated disorders in Japanese individuals than in Caucasian individuals. The objective of this randomised, double-blind, placebo-controlled parallel group study, conducted in Japanese overweight adults, was to investigate the effects of polymethoxyflavone purified from Kaempferia parviflora on visceral fat. A total of 80 subjects (aged 20-64 years, 23.0 ≤ body mass index < 30 kg m-2) were randomly assigned in 1 : 1 ratio to either the active (polymethoxyflavone purified from K. parviflora) or placebo group. Over a 12-week period, each subject received two capsules containing polymethoxyflavone purified from K. parviflora (12 mg polymethoxyflavone per day) or placebo. The primary outcome was a reduction in visceral fat area (VFA), while the secondary outcome was a reduction in subcutaneous fat area (SFA) and total fat area (TFA). VFA was measured at 0, 8, and 12 weeks using computed tomography scanning. Results showed that VFA significantly reduced after 12 weeks in the active group and was significantly lower than in the placebo group at 8 and 12 weeks. A significant reduction was observed in SFA and TFA after 8 and 12 weeks in the active group; TFA was significantly lower than that in the placebo group at 8 and 12 weeks. No adverse events associated with the test supplements were observed in either group. Our study shows that administration of polymethoxyflavone purified from K. parviflora reduces visceral fat in Japanese overweight adults.
Collapse
Affiliation(s)
- Susumu Yoshino
- Research Center, Maruzen Pharmaceuticals, Co., Ltd, Hiroshima 729-3102, Japan.
| | - Takashi Tagawa
- Research Center, Maruzen Pharmaceuticals, Co., Ltd, Hiroshima 729-3102, Japan.
| | - Riyo Awa
- Research Center, Maruzen Pharmaceuticals, Co., Ltd, Hiroshima 729-3102, Japan.
| | - Jun Ogasawara
- Research Center, Maruzen Pharmaceuticals, Co., Ltd, Hiroshima 729-3102, Japan.
| | - Hiroshige Kuwahara
- Research Center, Maruzen Pharmaceuticals, Co., Ltd, Hiroshima 729-3102, Japan.
| | | |
Collapse
|
7
|
Fujii M, Fukuura K, Ohto N, Kuwahara H, Mizuno M. Lactobacillus plantarum 22A-3 exerts anti-allergic activity through TGF-β secretion in passive cutaneous anaphylaxis of mice. Int J Food Sci Nutr 2020; 72:478-484. [PMID: 33076718 DOI: 10.1080/09637486.2020.1833316] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Allergy is a global issue, however, medical intervention for allergy treatment is limited. Recent studies have focussed on allergy prevention with food factors. In this study, Lactobacillus plantarum 22 A-3 (LP22A3) exerted an anti-allergic effect in passive cutaneous anaphylaxis (PCA) reaction and increased transforming growth factor (TGF)-β contents in blood. The increase of TGF-β contents in blood by exogenous TGF-β injection intraperitoneally decreased Evans blue release into mice ears to the same level as LP22A3 treatment in PCA reaction. LP22A3 treatment directly to RBL-2H3 cells shows no effect on β-hexosaminidase release from RBL-2H3 but inhibited its release using the Caco-2/RBL-2H3 cells co-culture system stimulated with LP22A3 from the apical side. Moreover, TGF-β treatment to RBL-2H3 inhibited β-hexosaminidase release from RBL-2H3. However, β-hexosaminidase release was cancelled by TGF-β neutralising antibody without the influence of TGF-β mRNA expression in Caco-2 cells. These results showed that LP22A3 ameliorates allergy by TGF-β secretion through the intestine.
Collapse
Affiliation(s)
- Minagi Fujii
- Department of Agrobioscience, Graduate School of Agricultural Science, Kobe University, Kobe, Japan
| | - Ko Fukuura
- Department of Agrobioscience, Graduate School of Agricultural Science, Kobe University, Kobe, Japan
| | - Nobuaki Ohto
- Maruzen Pharmaceuticals Co. Ltd., Fukuyama, Japan
| | | | - Masashi Mizuno
- Department of Agrobioscience, Graduate School of Agricultural Science, Kobe University, Kobe, Japan
| |
Collapse
|
8
|
Oka S, Ohto N, Kuwahara H, Mizuno M. Oral administration of pineapple glucosylceramide improves defective epidermal barrier function by restoring diminished level of TGF-β in the skin. Eur Food Res Technol 2020. [DOI: 10.1007/s00217-020-03454-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
|
9
|
Yoshino S, Awa R, Miyake Y, Fukuhara I, Sato H, Endo Y, Tomita S, Kuwahara H. Evaluation of the Safety of Daily Consumption of Kaempferia parviflora Extract (KPFORCE): A Randomized Double-Blind Placebo-Controlled Trial. J Med Food 2019; 22:1168-1174. [PMID: 31517555 DOI: 10.1089/jmf.2018.4372] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 11/12/2022] Open
Abstract
This study's aim was to evaluate the safety of daily consumption of Kaempferia parviflora extract (KPE) using a randomized double-blind placebo-controlled study with 52 recruited healthy Japanese subjects. Each subject received five KPE tablets (containing 150 mg of KPFORCE™/tablet) or placebo daily for 4 weeks. There were no adverse events related to KPE intake or any abnormalities compared with placebo group in anthropometric, cardiovascular, blood, and urine parameters during the course of the study. Thus, daily KPE ingestion was found to be safe in healthy Japanese men and women.
Collapse
Affiliation(s)
- Susumu Yoshino
- Research and Development Division, Research Center, Maruzen Pharmaceuticals Co., Ltd., Hiroshima, Japan
| | - Riyo Awa
- Research and Development Division, Research Center, Maruzen Pharmaceuticals Co., Ltd., Hiroshima, Japan
| | - Yasuo Miyake
- Research and Development Division, Research Center, Maruzen Pharmaceuticals Co., Ltd., Hiroshima, Japan
| | | | - Hisao Sato
- Clinical Research Department, New Drug Research Center, Inc., Hokkaido, Japan
| | - Yoshiki Endo
- Clinical Research Department, New Drug Research Center, Inc., Hokkaido, Japan
| | - Shinpei Tomita
- Clinical Research Department, New Drug Research Center, Inc., Hokkaido, Japan
| | - Hiroshige Kuwahara
- Research and Development Division, Research Center, Maruzen Pharmaceuticals Co., Ltd., Hiroshima, Japan
| |
Collapse
|
10
|
Yoshino S, Awa R, Ohto N, Miyake Y, Kuwahara H. Toxicological evaluation of standardized Kaempferia parviflora extract: Sub-chronic and mutagenicity studies. Toxicol Rep 2019; 6:544-549. [PMID: 31249788 PMCID: PMC6587015 DOI: 10.1016/j.toxrep.2019.06.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 06/04/2019] [Accepted: 06/06/2019] [Indexed: 11/28/2022] Open
Abstract
Kaempferia parviflora (KP), also known as Krachai-dam in Thailand, belongs to the family Zingiberaceae and has been used traditionally to improve blood flow and treat inflammatory, allergic, and gastrointestinal disorders. The objective of this study was to investigate the safety profile of a standardized hydroalcoholic KP rhizome extract via mutagenicity and sub-chronic toxicity evaluations using in vitro and in vivo techniques. The in vitro mutagenicity of KP extract was assessed via reverse mutation tests using Salmonella typhimurium TA98, TA100, TA1535, and TA1537, and Escherichia coli WP2 uvrA. The sub-chronic toxicity profile was evaluated after daily oral administration of KP extract to Sprague-Dawley rats for 90 days. General toxicological parameters were monitored weekly. After the treatment period, blood was collected for hematological and biochemical analyses and certain organs were removed for macroscopic and histopathological analyses. Reverse mutation tests revealed that KP extract did not induce gene mutations at any of the concentrations tested. In the sub-chronic toxicity test, a few changes were observed, including increased salivation in the animals administered high-dose KP extract (249 mg/kg body weight (bw)/day). No toxicologically relevant changes were observed in the biochemical analysis. Sub-chronic administration of KP extract increased platelet levels in animals administered low-dose KP extract (25 mg/kg bw/day). However, the hematological and biochemical parameters remained within normal physiological ranges for the animal species. No toxicological changes were observed in the macroscopic and histopathological analyses performed in this study. These results demonstrate that KP extract is not genotoxic and that 90-day oral administration of the doses tested did not result in toxicity. Therefore, KP extract has a high safety margin for daily use.
Collapse
Affiliation(s)
- Susumu Yoshino
- Research Center, Maruzen Pharmaceuticals Co., Ltd., 1089-8 Sagata, Shinnichi, Fukuyama, Hiroshima, 729-3102, Japan
| | - Riyo Awa
- Research Center, Maruzen Pharmaceuticals Co., Ltd., 1089-8 Sagata, Shinnichi, Fukuyama, Hiroshima, 729-3102, Japan
| | - Nobuaki Ohto
- Research Center, Maruzen Pharmaceuticals Co., Ltd., 1089-8 Sagata, Shinnichi, Fukuyama, Hiroshima, 729-3102, Japan
| | - Yasuo Miyake
- Research Center, Maruzen Pharmaceuticals Co., Ltd., 1089-8 Sagata, Shinnichi, Fukuyama, Hiroshima, 729-3102, Japan
| | - Hiroshige Kuwahara
- Research Center, Maruzen Pharmaceuticals Co., Ltd., 1089-8 Sagata, Shinnichi, Fukuyama, Hiroshima, 729-3102, Japan
| |
Collapse
|
11
|
Yoshino S, Awa R, Miyake Y, Fukuhara I, Sato H, Ashino T, Tomita S, Kuwahara H. Daily intake of Kaempferia parviflora extract decreases abdominal fat in overweight and preobese subjects: a randomized, double-blind, placebo-controlled clinical study. Diabetes Metab Syndr Obes 2018; 11:447-458. [PMID: 30214264 PMCID: PMC6120512 DOI: 10.2147/dmso.s169925] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
PURPOSE Obesity is a serious problem, which is now a worldwide health problem. Kaempferia parviflora extract (KPE) exhibits anti-obesity effects in animals. However, as no clinical trials have evaluated the anti-obesity effects of KPE in humans, we examined the effects of KPE in reducing abdominal fat in overweight and preobese Japanese subjects. MATERIALS AND METHODS A 12-week, single-center, randomized, double-blind, placebo-controlled clinical trial was conducted. Seventy-six subjects (males and females aged 20 to <65 years) with a body mass index ≥24 and <30 kg/m2 were randomly assigned into two groups. The subjects in each group ingested one capsule of placebo or active KPE (containing 150 mg of KPE) once daily for 12 weeks. The primary outcome was reduction in visceral fat area as determined by computed tomography scanning. The key secondary outcomes were reductions in subcutaneous fat area and total fat area. Subgroup analysis was also performed in healthy subjects without dyslipidemia, hypertension, or hyperglycemia. The safety of KPE ingestion was also evaluated. RESULTS Compared with the placebo group, the active KPE group exhibited significant reduction in abdominal fat area (visceral, subcutaneous, and total fat) and triglyceride levels after 12 weeks. Subgroup analyses demonstrated a significant reduction in abdominal fat area and triglyceride levels in healthy subjects compared with the placebo group after 12 weeks. Neither group exhibited adverse events related to the test foods or clinically relevant abnormal changes in physical, biochemical, or hematologic parameters, or in urinalysis results and medical interview. CONCLUSION Daily ingestion of KPE safely reduces body fat, particularly abdominal fat, in Japanese overweight and preobese subjects.
Collapse
Affiliation(s)
- Susumu Yoshino
- Research and Development Division, Research Center, Maruzen Pharmaceuticals Co., Ltd., Hiroshima, Japan,
| | - Riyo Awa
- Research and Development Division, Research Center, Maruzen Pharmaceuticals Co., Ltd., Hiroshima, Japan,
| | - Yasuo Miyake
- Research and Development Division, Research Center, Maruzen Pharmaceuticals Co., Ltd., Hiroshima, Japan,
| | | | - Hisao Sato
- Clinical Research Department, New Drug Research Center, Inc., Hokkaido, Japan
| | - Toyotada Ashino
- Clinical Research Department, New Drug Research Center, Inc., Hokkaido, Japan
| | - Shinpei Tomita
- Clinical Research Department, New Drug Research Center, Inc., Hokkaido, Japan
| | - Hiroshige Kuwahara
- Research and Development Division, Research Center, Maruzen Pharmaceuticals Co., Ltd., Hiroshima, Japan,
| |
Collapse
|
12
|
Anraku Y, Kuwahara H, Fukusato Y, Mizoguchi A, Ishii T, Nitta K, Matsumoto Y, Toh K, Miyata K, Uchida S, Nishina K, Osada K, Itaka K, Nishiyama N, Mizusawa H, Yamasoba T, Yokota T, Kataoka K. Glycaemic control boosts glucosylated nanocarrier crossing the BBB into the brain. Nat Commun 2017; 8:1001. [PMID: 29042554 PMCID: PMC5645389 DOI: 10.1038/s41467-017-00952-3] [Citation(s) in RCA: 151] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Accepted: 08/07/2017] [Indexed: 01/11/2023] Open
Abstract
Recently, nanocarriers that transport bioactive substances to a target site in the body have attracted considerable attention and undergone rapid progression in terms of the state of the art. However, few nanocarriers can enter the brain via a systemic route through the blood-brain barrier (BBB) to efficiently reach neurons. Here we prepare a self-assembled supramolecular nanocarrier with a surface featuring properly configured glucose. The BBB crossing and brain accumulation of this nanocarrier are boosted by the rapid glycaemic increase after fasting and by the putative phenomenon of the highly expressed glucose transporter-1 (GLUT1) in brain capillary endothelial cells migrating from the luminal to the abluminal plasma membrane. The precisely controlled glucose density on the surface of the nanocarrier enables the regulation of its distribution within the brain, and thus is successfully optimized to increase the number of nanocarriers accumulating in neurons.There are only a few examples of nanocarriers that can transport bioactive substances across the blood-brain barrier. Here the authors show that by rapid glycaemic increase the accumulation of a glucosylated nanocarrier in the brain can be controlled.
Collapse
Affiliation(s)
- Y Anraku
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - H Kuwahara
- Department of Neurology and Neurological Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan.,Center for Brain Integration Research, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan
| | - Y Fukusato
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - A Mizoguchi
- Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - T Ishii
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - K Nitta
- Department of Neurology and Neurological Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan.,Center for Brain Integration Research, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan
| | - Y Matsumoto
- Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.,Department of Otorhinolaryngology and Head and Neck Surgery, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - K Toh
- Innovation Center of NanoMedicine, Kawasaki Institute of Industrial Promotion, 3-25-14 Tonomachi, Kawasaki-ku, Kawasaki, 210-0821, Japan
| | - K Miyata
- Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.,Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - S Uchida
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan.,Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - K Nishina
- Department of Neurology and Neurological Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan.,Center for Brain Integration Research, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan
| | - K Osada
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - K Itaka
- Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - N Nishiyama
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, R1-11, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan
| | - H Mizusawa
- Department of Neurology and Neurological Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan.,Center for Brain Integration Research, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan
| | - T Yamasoba
- Department of Otorhinolaryngology and Head and Neck Surgery, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - T Yokota
- Department of Neurology and Neurological Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan. .,Center for Brain Integration Research, Tokyo Medical and Dental University (TMDU), 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan.
| | - K Kataoka
- Innovation Center of NanoMedicine, Kawasaki Institute of Industrial Promotion, 3-25-14 Tonomachi, Kawasaki-ku, Kawasaki, 210-0821, Japan. .,Policy Alternatives Research Institute, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
| |
Collapse
|
13
|
Yoshioka K, Kunieda T, Asami Y, Sujino Y, Tanaka K, Piao W, Kuwahara H, Nishina K, Nagata T, Yokota T. Dual overhanging-duplex oligonucleotide improved efficacy and safety in gene therapy for FAP. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.416] [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: 11/25/2022]
|
14
|
Kuwahara H, Song J, Shimoura T, Yoshida-Tanaka K, Mizuno T, Mochizuki T, Nishina K, Nagata T, Kusuhara H, Yokota T. Heteroduplex oligonucleotide as a platform technology to modulate blood-brain barrier function in vivo. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.417] [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: 11/26/2022]
|
15
|
Li F, Ishibashi S, Iwasawa E, Song J, Ichijo M, Zhang Y, Piao W, Yoshida K, Yoshioka K, Kuwahara H, Nagata T, Yokota T. Gene silencing effect of heteroduplex oligonucleotide and its biodistribution in neurons and brain endothelial cells after ischemia. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2483] [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]
|
16
|
Nagata T, Ohyagi M, Ihara K, Kaburagi H, Nishina K, Piao W, Yoshida-Tanaka K, Kuwahara H, Yoshioka K, Yokota T. The effect of DNA/RNA heteroduplex oligonucleotides on muscle. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2383] [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: 12/01/2022]
|
17
|
Kuwata T, Hashimoto T, Ohto N, Kuwahara H, Lee JW, Bamba T, Mizuno M. A metabolite of dietary glucosylceramide from pineapples improves the skin barrier function in hairless mice. J Funct Foods 2017. [DOI: 10.1016/j.jff.2017.01.017] [Citation(s) in RCA: 5] [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: 01/12/2023] Open
|
18
|
Koborinai R, Dissanayake SE, Reehuis M, Matsuda M, Kajita T, Kuwahara H, Lee SH, Katsufuji T. Orbital Glass State of the Nearly Metallic Spinel Cobalt Vanadate. Phys Rev Lett 2016; 116:037201. [PMID: 26849610 DOI: 10.1103/physrevlett.116.037201] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Indexed: 06/05/2023]
Abstract
Strain, magnetization, dielectric relaxation, and unpolarized and polarized neutron diffraction measurements were performed to study the magnetic and structural properties of spinel Co_{1-x}V_{2+x}O_{4}. The strain measurement indicates that, upon cooling, ΔL/L in the order of ∼10^{-4} starts increasing below T_{C}, becomes maximum at T_{max}, and then decreases and changes its sign at T^{*}. Neutron measurements indicate that a collinear ferrimagnetic order develops below T_{C} and upon further cooling noncollinear ferrimagnetic ordering occurs below T_{max}. At low temperatures, the dielectric constant exhibits a frequency dependence, indicating slow dynamics. These results indicate the existence of an orbital glassy state at low temperatures in this nearly metallic frustrated magnet.
Collapse
Affiliation(s)
- R Koborinai
- Department of Physics, Waseda University, Tokyo 169-8555, Japan
| | - S E Dissanayake
- Department of Physics, University of Virginia, Charlottesville, Virginia 22904, USA
| | - M Reehuis
- Helmholtz-Zentrum für Materialien und Energie, 14109 Berlin, Germany
| | - M Matsuda
- Quantum Condensed Matter Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - T Kajita
- Department of Physics, Waseda University, Tokyo 169-8555, Japan
| | - H Kuwahara
- Department of Physics, Sophia University, Tokyo 102-8554, Japan
| | - S-H Lee
- Department of Physics, University of Virginia, Charlottesville, Virginia 22904, USA
| | - T Katsufuji
- Department of Physics, Waseda University, Tokyo 169-8555, Japan
- Kagami Memorial Research Institute for Materials Science and Technology, Waseda University, Tokyo 169-0051, Japan
| |
Collapse
|
19
|
Mogi K, Shirataki C, Kihara K, Kuwahara H, Hongoh Y, Yamamoto T. Trapping and isolation of single prokaryotic cells in a micro-chamber array using dielectrophoresis. RSC Adv 2016. [DOI: 10.1039/c6ra21229h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The vast majority of prokaryotic species are difficult or impossible to culture in laboratories, which makes it difficult to study these organisms using conventional biochemical techniques.
Collapse
Affiliation(s)
- K. Mogi
- Department of Mechanical Engineering
- Tokyo Institute of Technology
- Tokyo 152-8552
- Japan
| | - C. Shirataki
- Department of Life Science and Technology
- Tokyo Institute of Technology
- Tokyo 152-8552
- Japan
| | - K. Kihara
- Department of Life Science and Technology
- Tokyo Institute of Technology
- Tokyo 152-8552
- Japan
| | - H. Kuwahara
- Department of Life Science and Technology
- Tokyo Institute of Technology
- Tokyo 152-8552
- Japan
| | - Y. Hongoh
- Department of Life Science and Technology
- Tokyo Institute of Technology
- Tokyo 152-8552
- Japan
| | - T. Yamamoto
- Department of Mechanical Engineering
- Tokyo Institute of Technology
- Tokyo 152-8552
- Japan
| |
Collapse
|
20
|
Tokunaga M, Akaki M, Ito T, Miyahara S, Miyake A, Kuwahara H, Furukawa N. Magnetic control of transverse electric polarization in BiFeO3. Nat Commun 2015; 6:5878. [DOI: 10.1038/ncomms6878] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Accepted: 11/17/2014] [Indexed: 11/09/2022] Open
|
21
|
Yoshino S, Kim M, Awa R, Kuwahara H, Kano Y, Kawada T. Kaempferia parviflora extract increases energy consumption through activation of BAT in mice. Food Sci Nutr 2014; 2:634-7. [PMID: 25493179 PMCID: PMC4256566 DOI: 10.1002/fsn3.144] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Revised: 06/10/2014] [Accepted: 06/12/2014] [Indexed: 01/23/2023] Open
Abstract
Kaempferia parviflora (KP) is a member of the ginger family and is known in Thailand as Thai ginseng, Krachai Dam or Black Ginger. TheK. parviflora extract (KPE) was previously reported to have a number of physiological effects; however, the antiobesity effects of KPE and its mechanisms remain to be elucidated. In this study, we conducted KPE feeding experiments (low dose: 0.5% KPE, high dose: 1.0% KPE) in mice to examine the antiobesity effects. For both 0.5% KPE and 1.0% KPE, 7 weeks' feeding of KPE contained in a high-fat diet (HFD) significantly decreased body weight gain, intraabdominal fat accumulation, and plasma triglyceride and leptin levels. Concurrently, KPE administration increased oxygen consumption in mice fed on a HFD. We also found that 1.0% KPE feeding significantly increased the uncoupling protein 1 (UCP1) expression in brown adipose tissue (BAT). Moreover, KPE administration increased urinary noradrenaline secretion levels. These results demonstrate that KPE promotes energy metabolism by activation of BAT, at both doses and up-regulation of UCP1 protein at a high dose. Although numerous challenges remain, the present study demonstrated that KPE suppresses HFD-induced obesity through increased energy metabolism.
Collapse
Affiliation(s)
- Susumu Yoshino
- Research Center, Maruzen Pharmaceuticals Co., Ltd. Fukuyama, Hiroshima, 729-3102, Japan
| | - Minji Kim
- Laboratory of Molecular Function of Food, Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University Uji, Kyoto, 611-0011, Japan
| | - Riyo Awa
- Research Center, Maruzen Pharmaceuticals Co., Ltd. Fukuyama, Hiroshima, 729-3102, Japan
| | - Hiroshige Kuwahara
- Research Center, Maruzen Pharmaceuticals Co., Ltd. Fukuyama, Hiroshima, 729-3102, Japan
| | - Yuriko Kano
- Laboratory of Nutrition Chemistry, Faculty of Home Economics, Kobe Women's University Suma-ku, Kobe, Hyogo, 654-8585, Japan
| | - Teruo Kawada
- Laboratory of Molecular Function of Food, Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University Uji, Kyoto, 611-0011, Japan ; Research Unit for Physiological Chemistry, C-PIER, Kyoto University Kyoto, 606-8501, Japan
| |
Collapse
|
22
|
Shiga H, Yoshii H, Ohe H, Yasuda M, Furuta T, Kuwahara H, Ohkawara M, Linko P. Encapsulation of Shiitake (Lenthinus Edodes) Flavors by Spray Drying. Biosci Biotechnol Biochem 2014; 68:66-71. [PMID: 14745165 DOI: 10.1271/bbb.68.66] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [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
Powdery encapsulation of shiitake flavors, extracted from dried shiitake, was investigated by spray drying. Flavor retention increased with an increase in drying air temperature and solid content, and decreased with an increase in dextrose equivalents of maltodextrin. A heat-treatment of the extract liquid made the lenthionine concentration increase, but did not influence the concentrations of the other flavors. The formation of lenthionine with heat-treatment could be described by the consecutive unimolecular-type first order reaction. Lenthionine content in a spray-dried powder prepared with the heated extracted liquid significantly increased. alpha-Cyclodextrin was the most suitable encapsulant of alpha-, beta-, and gamma-cyclodextrins to prepare the spray-dried powder, including lenthionine. The flavor retentions were markedly increased by using of alpha-cyclodextrin and maltodextrin in combination as an encapsulant.
Collapse
Affiliation(s)
- Hirokazu Shiga
- Department of Biotechnology, Tottori University, Tottori, Japan
| | | | | | | | | | | | | | | |
Collapse
|
23
|
Hayashi T, Ueda S, Tsuruta H, Kuwahara H, Osawa R. Complexing of Green Tea Catechins with Food Constituents and Degradation of the Complexes by Lactobacillus plantarum. Biosci Microbiota Food Health 2012; 31:27-36. [PMID: 24936346 PMCID: PMC4034289 DOI: 10.12938/bmfh.31.27] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2011] [Accepted: 12/15/2011] [Indexed: 12/28/2022]
Abstract
Complexing of green tea catechins with food constituents and their hydrolysis by tannase-producing Lactobacillus plantarum strains, were investigated. Our observations indicated that 1) epigallocatechin gallate (EGCg) and other catechin galloyl esters bound with food ingredients (i.e., proteins) to form a complex that is likely to be unabsorbable through the intestinal wall, whereas most catechins not esterified with gallic acid (GA) remain in free form, not complexing with food ingredients; 2) tannase activity of L. plantarum is strain dependent, possibly grouped into those with high tannase activity hydrolyzing EGCg to epigallocatechin and GA and those with the low activity; and 3) L. plantarum strains with high tannase activity are capable of hydrolyzing not only intact EGCg but also EGCg and other catechin galloyl esters complexed with dietary proteins to free non-galloyl ester catechins and GA. The evidence suggests that L. plantarum with high tannase activity, if it colonizes the human intestine, would release free non-galloyl-ester catechins and GA that are readily absorbed through the human intestinal epithelia from the complexes, thereby ensuring maximum delivery of the bioactive polyphenols of green tea to the host.
Collapse
Affiliation(s)
- Taeko Hayashi
- Research Development Division, Maruzen Pharmaceuticals Co., Ltd., 14703-10 Mukaihigashi-cho, Onomichi 722-0062, Japan
| | - Shuhei Ueda
- Department of Bioresource Science, Graduate School of Agricultural Science, Kobe University, 1-1 Rokko-dai, Nada-ku, Kobe, 657-8501 Japan
| | - Hiroki Tsuruta
- Center for Applied Structural Science, Center for Collaborative Research and Technology Development, Kobe University, 1-1 Rokko-dai, Nada-ku, Kobe, 657-8501 Japan
| | - Hiroshige Kuwahara
- Research Development Division, Maruzen Pharmaceuticals Co., Ltd., 14703-10 Mukaihigashi-cho, Onomichi 722-0062, Japan
| | - Ro Osawa
- Department of Bioresource Science, Graduate School of Agricultural Science, Kobe University, 1-1 Rokko-dai, Nada-ku, Kobe, 657-8501 Japan
| |
Collapse
|
24
|
Kuwahara H, Okuda T, Tomioka Y, Kimura T, Asamitsu A, Tokura Y. Phase Diagram and Anisotropic Transport Properties of Nd1-xSrxMnO3 Crystals. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-494-83] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
ABSTRACTWe have investigated electronic transport and magnetic properties of perovskite-type Nd1-xSrxMnO3 crystals with change of controlled hole-doping level (0.30≤x≤0.80). The electronic phase diagram of Nd1-xSrxMnO3 was obtained by systematic measurements of magnetization (magnetic structure), resistivity, and lattice parameter. We have also studied the anisotropie transport properties of x=0.50 and 0.55 crystals with different magnetic structures: CE-type antiferromagnetic (AF) structure for x=0.50 and A-type layered AF one for x=0.55. In the case of the x=0.55 crystal, the metallic behavior was observed within the ferromagnetic (F) layers, while along the AF-coupling direction the crystal remains insulating over the whole temperature region. The observed large anisotropy is due to the magnetic as well as orbital-ordering induced confinement of the spin-polarized carriers within the F sheets. The nearly isotropie transport behavior has been confirmed for the CE-type AF charge-ordered state in the x=0.50 crystal.
Collapse
|
25
|
|
26
|
Katakura I, Tokunaga M, Matsuo A, Kawaguchi K, Kindo K, Hitomi M, Akahoshi D, Kuwahara H. Development of high-speed polarizing imaging system for operation in high pulsed magnetic field. Rev Sci Instrum 2010; 81:043701. [PMID: 20441339 DOI: 10.1063/1.3359954] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
A high-speed polarizing microscope system combined with a 37 T pulse magnet has been developed. This system was applied to successfully visualize the field-induced collapse of charge-orbital ordering in a layered manganite La(1/2)Sr(3/2)MnO(4). Quantitative analyses of the obtained polarizing microscope images provided clear evidence of this transition in contrast to rather moderate changes in magnetization and magnetoresistance. The ability of this system to carry out quantitative analysis was further tested through the observation of Faraday rotation in a Tb(3)Ga(5)O(12) crystal. The Verdet constant determined from the polarizing images is in reasonable agreement with that in literature. Local intensity analyses of the images indicate that we can investigate magneto-optical signals within an accuracy of 0.85% in an area of 9.6 x 9.6 microm(2).
Collapse
Affiliation(s)
- I Katakura
- The Institute for Solid State Physics, The University of Tokyo, Kashiwa 277-8581, Japan
| | | | | | | | | | | | | | | |
Collapse
|
27
|
|
28
|
Myers CJ, Barker N, Jones K, Kuwahara H, Madsen C, Nguyen NPD. iBioSim: a tool for the analysis and design of genetic circuits. Bioinformatics 2009; 25:2848-9. [DOI: 10.1093/bioinformatics/btp457] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
|
29
|
Nagao M, Asaka T, Akahoshi D, Nagai T, Hara T, Kimoto K, Kuwahara H, Matsui Y. Nanoscale structural inhomogeneity at the phase boundary in Nd 1−xSr xMnO 3. Acta Crystallogr A 2008. [DOI: 10.1107/s010876730808361x] [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
|
30
|
|
31
|
Harada-Shiba M, Minamino N, Kuwahara H, Itoh T, Maeda R, Ohira M, Abe E, Jinno K, Tomoike H. Th-P15:58 Proteome analysis of hypertriglyceridemic rabbits. ATHEROSCLEROSIS SUPP 2006. [DOI: 10.1016/s1567-5688(06)82018-0] [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: 11/25/2022]
|
32
|
Saitoh O, Mizutori Y, Takamura N, Yamasaki H, Kita A, Kuwahara H, Nagayama Y. Adenovirus-mediated gene delivery of interleukin-10, but not transforming growth factor beta, ameliorates the induction of Graves' hyperthyroidism in BALB/c mice. Clin Exp Immunol 2005; 141:405-11. [PMID: 16045729 PMCID: PMC1809459 DOI: 10.1111/j.1365-2249.2005.02874.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Interleukin-10 (IL-10) and transforming growth factor-beta (TGF-beta) are well known anti-inflammatory cytokines. We have studied the effect of adenovirus-mediated IL-10 and TGF-beta gene delivery on the induction of Graves' hyperthyroidism in our mouse model that involves repeated injections of adenovirus expressing the thyrotropin receptor A subunit (AdTSHR). We first constructed adenoviruses encoding the two cytokines (AdIL10 and AdTGF(beta)) and confirmed expression by in vitro infection of COS cells. Susceptible BALB/c mice were injected twice with AdTSHR alone or together with AdIL10 or AdTGF(beta), and bled two weeks after the second immunization. Significantly elevated serum thyroxine levels were seen in 26% of mice immunized with AdTSHR and AdIL10 versus 61% with AdTSHR alone. Levels of thyroid stimulating antibody, but not nonstimulating antibody, were also decreased, and TSHR-specific splenocyte secretion of interferon-gamma in recall assays was impaired in mice treated with AdIL10. In contrast, AdTGF(beta) had little effect on hyperthyroidism. Overall, our findings demonstrate that gene delivery of IL-10, but not TGF-beta, suppresses the induction of Graves' hyperthyroidism in a mouse model. However, the effect of IL-10 is less powerful than we observed previously with T helper type 2-inducers including adenovirus expressing IL-4, Shistosoma mansoni infection or alpha-galactosylceramide.
Collapse
Affiliation(s)
- O Saitoh
- Department of Medical Gene Technology, Atomic Bomb Disease Institute, Nagasaki University, Nagasaki, Japan
| | | | | | | | | | | | | |
Collapse
|
33
|
Fujita N, Sakamaki H, Uotani S, Takahashi R, Kuwahara H, Kita A, Oshima K, Yamasaki H, Yamaguchi Y, Eguchi K. Acute effects of ethanol on feeding behavior and leptin-induced STAT3 phosphorylation in rat hypothalamus. Int J Obes (Lond) 2003; 27:55-9. [PMID: 12532154 DOI: 10.1038/sj.ijo.0802194] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [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] [Received: 02/18/2002] [Revised: 07/14/2002] [Accepted: 08/13/2002] [Indexed: 12/19/2022]
Abstract
OBJECTIVE Drinking ethanol stimulates the appetite, producing a positive energy balance. The mechanism by which ethanol regulates the appetite in the central nervous system, however, has not been fully understood. The aim of this study is to investigate the interaction of ethanol with the satiety effect of leptin, a hormone which suppresses the appetite in the hypothalamic region. DESIGN : Leptin (7.5 micro g) or the same dose of phosphate buffer saline (PBS) was administered into the third ventricle (i.c.v.), 30 min after an intraperitoneal injection (i.p.) of ethanol (0.5 g/kg body weight) or the same dose of PBS. MATERIALS Adult male Sprague-Dawley rats weighing 290-320 g were used. MEASUREMENTS Food intake was measured 2, 12 and 24 h after leptin i.c.v. infusion. The tyrosine phosphorylation of signal transducer and activator transcription factor 3 (STAT3) in the hypothalamus was analyzed by Western blotting. RESULTS The cumulative food intakes in the saline/leptin group (saline i.p.+leptin i.c.v.) were markedly reduced to about 45% of the saline/PBS group (saline i.p.+PBS i.c.v.) at 2, 12 and 24 h time points (P<0.05, 0.001, and 0.005, respectively). As compared with the saline/leptin group, those of the ethanol/leptin group (ethanol i.p.+leptin i.c.v.) were significantly increased to the level seen in the saline/PBS group at 12 and 24 h time points (P<0.05, and P<0.005 vs the saline/leptin group, respectively). Ethanol administration resulted in about a 50% reduction of the leptin-induced STAT3 tyrosine phosphorylation seen in the hypothalamic protein as compared to that of the saline/leptin group. CONCLUSION These findings suggest that ethanol-induced enhancement of the appetite may, in part, result from leptin resistance transiently caused by ethanol to attenuate the leptin signal transduction.
Collapse
Affiliation(s)
- N Fujita
- The First Department of Internal Medicine, Nagasaki University School of Medicine, Nagasaki, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
34
|
Fujita N, Yamasaki H, Yamakawa K, Uotani S, Kuwahara H, Degawa-Yamauchi M, Abe T, Ozaki M, Sera Y, Kawasaki E, Takino H, Yamaguchi Y, Eguchi K. Decrease in the insulin receptor protein level by anti-insulin receptor antibodies: roles of tyrosine kinase activity and receptor internalization. Acta Diabetol 2002; 39:221-7. [PMID: 12486497 DOI: 10.1007/s005920200038] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
To investigate the mechanism of severe impairment of insulin action in type B insulin resistance, we extracted IgG from the serum of a patient with type B insulin resistance (B-IgG) and analyzed the inhibiting effect of B-IgG not only on insulin signaling but also on IGF-I signaling in Chinese hamster ovary (CHO) cells expressing human insulin receptor or human IGF-I receptor. Preincubation with 1 mg/ml B-IgG prevented insulin-induced phosphorylation of insulin receptor and insulin receptor substrate-1 (IRS-1) but did not alter the IGF-I-induced phosphorylation of the IGF-I receptor and IRS-1. (125)I-insulin binding was inhibited by 93% after preincubation with B-IgG at 37 degrees C and was recovered up to 50% of the control value by acid washing. However, when cells were preincubated with B-IgG at 4 degrees C, the insulin binding completely recovered the control value by acid washing. (125)I-IGF-I binding was not altered by B-IgG preincubation. Immunoblot study revealed that the protein level of the insulin receptor was strongly decreased by preincubation with 1 mg/ml B-IgG at 37 degrees C, but never at 4 degrees C. The IRS-1 protein level did not change by B-IgG preincubation. In order to know the role of the insulin receptor internalization in the inhibiting effect of B-IgG, we employed CHO cells expressing mutant insulin receptors which do not undergo internalization (CHO-K1018R). B-IgG incubation of CHO-K1018R at 37 degrees C failed to decrease the protein level of the insulin receptor. The present data indicate that IgG from the diabetic patient with type B insulin resistance decreased insulin receptor protein level, probably due to the enhanced degradation rate of the insulin receptor, in which insulin receptor tyrosine kinase activity and internalization are required for this process. This effect of B-IgG was specific for the insulin receptor with no effect on either IGF-I receptor or IRS-1, as reflected by the IGF-I effectiveness on glycemic control in this patient.
Collapse
Affiliation(s)
- N Fujita
- The First Department of Internal Medicine, Nagasaki University, School of Medicine, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
35
|
Asaka T, Anan Y, Nagai T, Tsutsumi S, Kuwahara H, Kimoto K, Tokura Y, Matsui Y. Ferromagnetic domain structures and nanoclusters in Nd(1/2)Sr(1/2)MnO3. Phys Rev Lett 2002; 89:207203. [PMID: 12443504 DOI: 10.1103/physrevlett.89.207203] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2002] [Indexed: 05/24/2023]
Abstract
Magnetic domain structures of Nd(1/2)Sr(1/2)MnO3 were investigated by means of low-temperature Lorentz electron microscopy. On cooling, magnetic domain walls started to appear at 250 K, and they were oriented straight along the [100] and [110] directions. With a further decrease in temperature, the volume of each magnetic domain increased with discontinuous domain-wall jumps. A characteristic granular image was observed at around 140 K, near the charge-ordering transition temperature. We consider that this originated from ferromagnetic nanoclusters that appeared in the antiferromagnetic matrix.
Collapse
Affiliation(s)
- T Asaka
- Advanced Materials Laboratory (AML), National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan
| | | | | | | | | | | | | | | |
Collapse
|
36
|
Li Y, Ren J, Yu W, Li Q, Kuwahara H, Yin L, Carraway KL, Kufe D. The epidermal growth factor receptor regulates interaction of the human DF3/MUC1 carcinoma antigen with c-Src and beta-catenin. J Biol Chem 2001; 276:35239-42. [PMID: 11483589 DOI: 10.1074/jbc.c100359200] [Citation(s) in RCA: 205] [Impact Index Per Article: 8.9] [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: 12/17/2022] Open
Abstract
The DF3/MUC1 mucin-like, transmembrane glycoprotein is aberrantly overexpressed in most human carcinomas. The MUC1 cytoplasmic domain interacts with the c-Src tyrosine kinase and thereby increases binding of MUC1 and beta-catenin. In the present work, coimmunoprecipitation studies demonstrate that MUC1 associates constitutively with the epidermal growth factor receptor (EGF-R) in human ZR-75-1 breast carcinoma cells. Immunofluorescence studies show that EGF-R and MUC1 associate at the cell membrane. We also show that the activated EGF-R phosphorylates the MUC1 cytoplasmic tail on tyrosine at a YEKV motif that functions as a binding site for the c-Src SH2 domain. The results demonstrate that EGF-R-mediated phosphorylation of MUC1 induces binding of MUC1 to c-Src in cells. Moreover, in vitro and in vivo studies demonstrate that EGF-R increases binding of MUC1 and beta-catenin. These findings support a novel role for EGF-R in regulating interactions of MUC1 with c-Src and beta-catenin.
Collapse
Affiliation(s)
- Y Li
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02115, USA
| | | | | | | | | | | | | | | |
Collapse
|
37
|
Fiebig M, Miyano K, Tomioka Y, Kuwahara H, Tokura Y, Reimann K. Nonlinear magneto-optical properties of colossal magnetoresistive manganites. Phys Rev Lett 2001; 86:6002-6005. [PMID: 11415414 DOI: 10.1103/physrevlett.86.6002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2000] [Indexed: 05/23/2023]
Abstract
Pr(1--x)CaxMnO(3) and Nd(1--x)SrxMnO(3) were investigated with three-photon difference frequency generation (DFG). This method allows one to determine both the crystalline and the magnetic symmetry. In the highly ordered low-temperature phase of Nd(0.50)Sr(0.50)MnO(3), a DFG contribution coupling simultaneously to antiferromagnetic and charge ordering was observed and used to reveal the formation of domains. Thus, magnetically induced three-photon processes are introduced into the fields of both nonlinear magneto-optics and colossal magnetoresistance as a powerful new method.
Collapse
Affiliation(s)
- M Fiebig
- Department of Applied Physics, The University of Tokyo, Tokyo 113-8656, Japan.
| | | | | | | | | | | |
Collapse
|
38
|
Kuwahara H, Tani Y, Ogawa Y, Takaichi Y, Shiraishi A, Ohtsuki M. Therapeutic Effect of Novel Anti-Human Fas Antibody HFE7A on Graft-versus-Host Disease Model. Clin Immunol 2001; 99:340-6. [PMID: 11358429 DOI: 10.1006/clim.2001.5028] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
In order to evaluate anti-human Fas antibody, we have established a new graft-versus-host disease (GVHD) model wherein splenocytes of human Fas transgenic mice (hFas-TgM) were transferred to immune-deficient SCID mice. In this model, although host SCID cells are not activated by or responsive to graft hFas-TgM cells, graft hFas-TgM cells are activated by and responsive to host SCID cells and thus cause GVHD symptoms. SCID mice that received hFas-TgM splenocytes had increased human Fas-positive lymphocytes in lymph nodes, decreased in body weight, and developed skin diseases, including rash and alopecia. Administration of novel anti-human Fas antibody HFE7A, which did not induce liver toxicity after administration to mice, decreased the level of the human Fas-positive lymphocytes, blocked the decrease of body weight, and suppressed development of skin diseases in this model. These results indicate that induction of apoptosis to activated graft cells with nontoxic anti-Fas antibody could reduce GVHD symptoms.
Collapse
Affiliation(s)
- H Kuwahara
- Neuroscience and Immunology Research Laboratories, Sankyo Co., Ltd., Tokyo, 140-8710, Japan
| | | | | | | | | | | |
Collapse
|
39
|
Hori T, Sugita Y, Koga E, Shirakawa S, Inoue K, Uchida S, Kuwahara H, Kousaka M, Kobayashi T, Tsuji Y, Terashima M, Fukuda K, Fukuda N. Proposed supplements and amendments to 'A Manual of Standardized Terminology, Techniques and Scoring System for Sleep Stages of Human Subjects', the Rechtschaffen & Kales (1968) standard. Psychiatry Clin Neurosci 2001; 55:305-10. [PMID: 11422885 DOI: 10.1046/j.1440-1819.2001.00810.x] [Citation(s) in RCA: 1692] [Impact Index Per Article: 73.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- T Hori
- Department of Behavioral Sciences, Hiroshima University, Japan.
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Hashizume Y, Kuwahara H, Uchimura N, Mukai M, Shirakawa S, Satomura T, Takeuchi N, Tanaka J, Maeda H. Examination of accuracy of sleep stages by means of an automatic sleep analysis system 'Sleep Ukiha'. Psychiatry Clin Neurosci 2001; 55:199-200. [PMID: 11422840 DOI: 10.1046/j.1440-1819.2001.00824.x] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
We examined the differences between the results of an automatic sleep analysis system and inspection decision. Subjects were 10 males (average age 21.6 years). One section consists of 20 s records. The sections that deviated from the algorithm could not be decided. Each sleep stage decided by automatic analysis was compared with the inspection decision. The agreement ratio of stage 3 was 91.6% in the highest, and followed by stage 2, stage 4, stage W and stage 1. The lowest was 62.5% for movement time. The total agreement ratio was 85.8%. The agreement ratios of the apnea index (AI) and the apnea hypopnea index (AHI) were relatively high, but for types of sleep apnea, agreement ratios require improvement.
Collapse
Affiliation(s)
- Y Hashizume
- Department of Neuropsychiatry, Kurume University School of Medicine, Fukuoka, Japan.
| | | | | | | | | | | | | | | | | |
Collapse
|
41
|
Abstract
We report a rare hair follicle nevus that occurred in a three-month-old Japanese boy with mild frontonasal dysplasia. It had been present since birth. Histologically, numerous tiny vellus hair follicles were found within the dermis. The constituent cells of these follicles showed the features of follicular germ cells under the electron microscope. The fibroblasts around the follicles were active and merged with the colloid substance. Many myofibroblasts were found in a collagenous stroma in the atrophic lesion of the frontonasal dysplasia.
Collapse
Affiliation(s)
- H Kuwahara
- Department of Plastic and Reconstructive Surgery, Hokkaido University School of Medicine, Sapporo, Japan
| | | | | | | | | |
Collapse
|
42
|
Mukai M, Uchimura N, Takeuchi N, Kuwahara H, Hashizume Y, Nose I, Satomura T, Tanaka J, Maeda H. Study on withdrawal of hypnotics: questionnaire on hypnotic use and its withdrawal. Psychiatry Clin Neurosci 2001; 55:209-10. [PMID: 11422844 DOI: 10.1046/j.1440-1819.2001.00828.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
To investigate the situation and problems contingent to hypnotic use and withdrawal, we conducted a questionnaire of outpatients. Only 41% of the patients were satisfied with their sleep and 53% of the patients took hypnotics. As regards the period, 83% of users had used them for more than 1 year and 19% had used them for more than 10 years. Although 90% of patients perceived efficacy of hypnotics, 67% felt more or less anxious about hypnotic use. Sixty-seven per cent of patients had actually withdrawn from the drugs or decreased dosage before. More than half the patients' conditions worsened after the withdrawal or reducing dosage.
Collapse
Affiliation(s)
- M Mukai
- Department of Neuropsychiatry, Kurume University, Kurume, Japan.
| | | | | | | | | | | | | | | | | |
Collapse
|
43
|
Ogawa Y, Kuwahara H, Kimura T, Tani Y, Yonehara S, Shiraishi A, Ohtsuki M. Therapeutic effect of anti-Fas antibody on a collagen induced arthritis model. J Rheumatol 2001; 28:950-5. [PMID: 11361221] [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: 04/16/2023]
Abstract
OBJECTIVE To investigate the therapeutic effect of anti-Fas monoclonal antibody (Mab, RK-8) in collagen induced arthritis (CIA). METHODS CD1F1 mice were immunized with bovine type II collagen to induce CIA and were treated with RK-8 intravenously. The effect of RK-8 was monitored by visual scoring. ELISA to detect serum anti-type II collagen antibody was performed on Day 47 and 70. Histopathological analysis was performed on Days 31 and 72. Digital micrography was performed on Day 72. RESULTS RK-8 treatment almost completely prevented CIA. This suppressive effect continued after RK-8 was discontinued. RK-8 significantly suppressed the serum anti-type II collagen antibody level on Day 47. Histological analysis revealed that RK-8 significantly reduced joint histopathology, as determined by the infiltration of inflammatory cells and cartilage damage, consistent with digital micrography. CONCLUSION Administration of anti-Fas Mab may be a useful therapeutic strategy for rheumatoid arthritis if used early in the disease.
Collapse
Affiliation(s)
- Y Ogawa
- Neuroscience and Immunology Research Laboratories, Sankyo Co. Ltd., Tokyo, Japan
| | | | | | | | | | | | | |
Collapse
|
44
|
Li Y, Kuwahara H, Ren J, Wen G, Kufe D. The c-Src tyrosine kinase regulates signaling of the human DF3/MUC1 carcinoma-associated antigen with GSK3 beta and beta-catenin. J Biol Chem 2001; 276:6061-4. [PMID: 11152665 DOI: 10.1074/jbc.c000754200] [Citation(s) in RCA: 184] [Impact Index Per Article: 8.0] [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: 11/06/2022] Open
Abstract
The DF3/MUC1 mucin-like glycoprotein is aberrantly overexpressed in most human carcinomas. The cytoplasmic domain of MUC1 interacts with glycogen synthase kinase 3 beta (GSK3 beta) and thereby decreases binding of MUC1 and beta-catenin. The present studies demonstrate that MUC1 associates with the c-Src tyrosine kinase. c-Src phosphorylates the MUC1 cytoplasmic domain at a YEKV motif located between sites involved in interactions with GSK3 beta and beta-catenin. The results demonstrate that the c-Src SH2 domain binds directly to pYEKV and inhibits the interaction between MUC1 and GSK3 beta. Moreover and in contrast to GSK3 beta, in vitro and in vivo studies demonstrate that c-Src-mediated phosphorylation of MUC1 increases binding of MUC1 and beta-catenin. The findings support a novel role for c-Src in regulating interactions of MUC1 with GSK3 beta and beta-catenin.
Collapse
Affiliation(s)
- Y Li
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02115, USA
| | | | | | | | | |
Collapse
|
45
|
Hadase M, Arimoto T, Kuwahara H, Takesako T, Hara H. [Ganglioneuroma detected in a patient over age 60]. Nihon Kokyuki Gakkai Zasshi 2001; 39:182-5. [PMID: 11431911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
We report a case of ganglioneuroma in a 67-year-old woman who presented with an abnormal shadow at a medical examination. She was admitted and chest radiography disclosed a mass in the upper right mediastinum. We suspected a mediastinal tumor after chest CT, chest MRI and bronchofiberscopic examination, and so surgical treatment was performed. The histopathological diagnosis was ganglioneuroma. Ganglioneuroma is thought of as a children's disease and adult onset is rare. We reasoned that ganglioneuroma should be included among the mediastinal tumors in patients over 60.
Collapse
Affiliation(s)
- M Hadase
- Department of Respiratory Medicine, Kyoto Second Red Cross Hospital 355-5, Haruobi-cho, Kamanza-dori, Marutamachi-agaru, Kamigyo-ku, Kyoto 602-8026, Japan
| | | | | | | | | |
Collapse
|
46
|
Arimoto T, Kuwahara H, Hadase M, Fujii S, Takesako T, Hara H. [Results of questionnaire on open disclosure to patients with malignant lung tumors comparison of responses before and after chemotherapy]. Nihon Kokyuki Gakkai Zasshi 2001; 39:89-94. [PMID: 11321832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
To investigate patient attitudes towards open disclosure of malignant disease, we conducted a questionnaire survey of 17 patients with malignant lung tumors, to whom the nature of their disease was revealed. The questionnaire used a 100 mm analog scale. Ten of the patients were treated by chemotherapy and their questionnaire results before and after treatment were compared. It was found that they were mostly satisfied about being truthfully informed and that, indeed, they were anxious to know their true diagnoses. They were also keen to have their true prognosis revealed, but not as much as the diagnosis. They also wished to be informed about treatment and its effects. These attitudes showed no marked changes resulting from the administration of chemotherapy, and we therefore concluded that chemotherapy itself had no influence on patients' feelings about disclosure. The questionnaire was well accepted and was useful in judging attitudes to open disclosure.
Collapse
Affiliation(s)
- T Arimoto
- Department of Respiratory Medicine, Kyoto Second Red Cross Hospital, 355-5, Haruobi-tyo, Kamanza-doori Marutamachi, Kamigyo-ku, Kyoto, Japan, 602-8226
| | | | | | | | | | | |
Collapse
|
47
|
Lao LM, Kumakiri M, Kiyohara T, Kuwahara H, Ueda K. Sub-populations of melanocytes in pigmented basal cell carcinoma: a quantitative, ultrastructural investigation. J Cutan Pathol 2001; 28:34-43. [PMID: 11168750 DOI: 10.1034/j.1600-0560.2001.280104.x] [Citation(s) in RCA: 7] [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: 11/23/2022]
Abstract
BACKGROUND Pigmentation is a characteristic clinical feature of basal cell carcinomas (BCCs) in Japanese patients. The pathogenesis of melanin pigment in pigmented BCCs is poorly understood. METHODS We have combined the techniques of morphometric analysis and electron microscopy to assess accurately the morphologic aspects of melanocytes that occurred in pigmented and non-pigmented areas of pigmented BCCs. RESULTS In the pigmented areas melanocytes were not only located along the basal membrane but also interspersed between tumor cells in the central parts of the tumor nest, and had large and numerous dendrites. Those in a supra-basal location displayed some degree of degeneration due to mitochondrion and melanosome swelling. In the non-pigmented areas melanocytes were only basally located, showed fewer dendrites, and frequently showed abortive melanosomes. However, melanocytes in these two different portions were in the active state of melanogenesis and proliferation. Ultrastructural cytomorphometric analysis also showed significant differences in most of the nuclear and cell parameters including nuclear and cell area, the nuclear/cell area ratio, cell perimeter and cell form factor between these two types of melanocytes. Particularly melanocytes in the pigmented areas were twice the cell size of the latter. In addition, the melanosomes remained almost completely in the apoptotic tumor cells, and the phagocytosis of the melanosome-containing apoptotic cells by the neighboring tumor cells appeared to be followed by the formation of the melanosome complexes. CONCLUSIONS These findings suggest that different populations of melanocytes are probably present in pigmented BCCs, and repeated cycles of phagocytosis of melanosome-containing apoptotic cells may represent the predominant way of forming large melanosome complexes. The present morphological observation and quantitative analysis provide a morphological basis for further studies to interpret other pathologic changes in pigmented BCCs.
Collapse
Affiliation(s)
- L M Lao
- Department of Dermatology, Fukui Medical University, Japan
| | | | | | | | | |
Collapse
|
48
|
Kuwahara H, Mitchell AT, Macklin MD, Zhao J, Listengarten D, Phillips LG. Transfer of platelet-derived growth factor-BB gene by gene gun increases contraction of collagen lattice by fibroblasts in diabetic and non-diabetic human skin. Scand J Plast Reconstr Surg Hand Surg 2000; 34:301-7. [PMID: 11195866 DOI: 10.1080/028443100750059066] [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] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
We have used an in vitro model of wound contraction, the fibroblast-populated collagen lattice, to examine the effect of platelet-derived growth factor BB (PDGF-BB) and PDGF-BB gene transfer by gene gun on the contraction of lattices composed of either diabetic or non-diabetic human fibroblasts. The area of collagen lattice and DNA synthesis were measured in 12 specimens. There were significant increases in lattice contraction with increasing doses of PDGF-BB and fibroblasts transfected with the PDGF-BB gene compared with control (p < 0.01). DNA synthesis of the non-diabetic and diabetic fibroblast lattices showed significantly increased incorporation of tritiated thymidine with increasing doses of PDGF-BB and fibroblasts transfected with the PDGF-BB compared with controls (p < 0.05). The effect of PDGF-BB gene transfer on diabetic and non-diabetic fibroblasts was similar to that of 20 ng/ml or less of PDGF-BB.
Collapse
Affiliation(s)
- H Kuwahara
- Department of Plastic and Reconstructive Surgery, Hokkaido University, Sapporo, Japan
| | | | | | | | | | | |
Collapse
|
49
|
Kawaguchi Y, Sato C, Hasegawa T, Oka S, Kuwahara H, Norimatsu H. Intraarticular osteoid osteoma associated with synovitis: a possible role of cyclooxygenase-2 expression by osteoblasts in the nidus. Mod Pathol 2000; 13:1086-91. [PMID: 11048802 DOI: 10.1038/modpathol.3880202] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
To clarify the condition of development of synovitis associated with intraarticular osteoid osteoma (OO), expressions of cyclooxygenase-2 (COX-2) protein and its messenger ribonucleic acid were investigated both in the nidus and the synovial tissue using immunohistochemical and reverse transcription-polymerase chain reaction analyses. Diffuse and strong COX-2 immunoreactivity was found in osteoblast-like tumor cells in the nidus of all six cases of OO (three of six cases were intraarticular OO associated with synovitis) and one case of osteoblastoma associated with synovitis. Expression of COX-2 messenger ribonucleic acid was demonstrated in one case of OO associated with synovitis, and was higher in the nidus than that in the inflamed synovial tissue. However, there were no significant difference between the nidus and synovium in the expression of cytosolic phospholipase A2, one of the enzymes involved in arachidonic acid metabolism, and inflammatory cytokines such as interleukin-1beta and tumor necrosis factor alpha. Finally, as there was only one case in which the examinations of gene expression were performed, no definitive overall conclusions could be reached; rather it is suggested that COX-2 expressed primarily by osteoblasts in the nidus of intraarticular OO may play a role in activating the pathway of arachidonic acid metabolism, resulting in synovitis of the involved joint.
Collapse
Affiliation(s)
- Y Kawaguchi
- Department of Orthopaedic Surgery, Kagawa Medical University, Kita-gun, Japan.
| | | | | | | | | | | |
Collapse
|
50
|
Kuwahara H, Miyamoto Y, Akaike T, Kubota T, Sawa T, Okamoto S, Maeda H. Helicobacter pylori urease suppresses bactericidal activity of peroxynitrite via carbon dioxide production. Infect Immun 2000; 68:4378-83. [PMID: 10899833 PMCID: PMC98327 DOI: 10.1128/iai.68.8.4378-4383.2000] [Citation(s) in RCA: 82] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Helicobacter pylori can produce a persistent infection in the human stomach, where chronic and active inflammation, including the infiltration of phagocytes such as neutrophils and monocytes, is induced. H. pylori may have a defense system against the antimicrobial actions of phagocytes. We studied the defense mechanism of H. pylori against host-derived peroxynitrite (ONOO(-)), a bactericidal metabolite of nitric oxide, focusing on the role of H. pylori urease, which produces CO(2) and NH(3) from urea and is known to be an essential factor for colonization. The viability of H. pylori decreased in a time-dependent manner with continuous exposure to 1 microM ONOO(-), i.e., 0.2% of the initial bacteria remained after a 5-min treatment without urea. The bactericidal action of ONOO(-) against H. pylori was significantly attenuated by the addition of 10 mM urea, the substrate for urease, whereas ONOO(-)-induced killing of a urease-deficient mutant of H. pylori or Campylobacter jejuni, another microaerophilic bacterium lacking urease, was not affected by the addition of urea. Such a protective effect of urea was potentiated by supplementation with exogenous urease, and it was almost completely nullified by 10 microM flurofamide, a specific inhibitor of urease. The bactericidal action of ONOO(-) was also suppressed by the addition of 20 mM NaHCO(3) but not by the addition of 20 mM NH(3). In addition, the nitration of L-tyrosine of H. pylori after treatment with ONOO(-) was significantly reduced by the addition of urea or NaHCO(3), as assessed by high-performance liquid chromatography with electrochemical detection. These results suggest that H. pylori-associated urease functions to produce a potent ONOO(-) scavenger, CO(2)/HCO(3)(-), that defends the bacteria from ONOO(-) cytotoxicity. The protective effect of urease may thus facilitate sustained bacterial colonization in the infected gastric mucosa.
Collapse
Affiliation(s)
- H Kuwahara
- Department of Microbiology, Kumamoto University School of Medicine, 2-2-1 Honjo, Kumamoto 860-0811, Japan
| | | | | | | | | | | | | |
Collapse
|