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Tsutamoto S, Iwasaki Y, Shinohara A, Imamiya R, Samukawa K, Kawada-Matsuo M, Komatsuzawa H, Yamada Y, Mandokoro K, Iwao H, Horiguchi Y, Osada-Oka M. Triterpenoid saponin from Panax ginseng increases the sensitivity of methicillin-resistant Staphylococcus aureus to β-lactam and aminoglycoside antibiotics. Microbiol Spectr 2024:e0322723. [PMID: 38647286 DOI: 10.1128/spectrum.03227-23] [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: 09/17/2023] [Accepted: 03/13/2024] [Indexed: 04/25/2024] Open
Abstract
The triterpenoid saponins, ginsenosides, are the major bioactive compound of red ginseng and can exert various physiological activities. In the present study, we examined whether red ginseng extract (RGE) exerts antibacterial activity against methicillin-resistant Staphylococcus aureus (MRSA). RGE had no bactericidal activity, at least in the range of dissolvable concentration. However, RGE reduced 0.03-0.25-fold the minimum inhibitory concentration (MIC) values of β-lactam antibiotics (oxacillin, ampicillin, carbenicillin, and cefazolin) and aminoglycoside antibiotics (kanamycin and gentamicin) against the two laboratory strains of MRSA. Moreover, the fractional inhibitory concentration index indicated the synergistic activity of RGE with each of the antibiotics. RGE also increased the kanamycin sensitivity of 15 MRSA strains isolated from human volunteers and increased the ampicillin sensitivity of five MRSA strains isolated from dairy cows diagnosed with bovine mastitis. In contrast, RGE did not alter the MIC values of fosfomycin, tetracycline, and erythromycin, suggesting that RGE acts selectively. In contrast, Triton X-100, which was reported to reduce the MIC value of β-lactam antibiotics to MRSA by increasing membrane permeability, reduced the MIC values of fosfomycin and tetracycline. These results indicate that RGE increases the bactericidal effect of antibiotics via a mechanism different from that used by Triton X-100. We found that ginsenoside Rg3 (Rg3), a component of RGE, was an essential compound that exhibits synergy activity with antibiotics. Furthermore, the non-natural compound K, which contains a common protopanaxadiol aglycon moiety with Rg3, also showed synergistic activity with antibiotics. Thus, Rg3 and compound K are potentially new antibiotic adjuvants against MRSA.IMPORTANCEMethicillin-resistant Staphylococcus aureus (MRSA) is a multidrug-resistant organism that is prevalent worldwide. Therefore, the research and development of new agents against MRSA are required. We first found that ginsenoside Rg3 (Rg3) in red ginseng, made from the roots of Panax ginseng C. A. Meyer, increased the sensitivity of β-lactam antibiotics and aminoglycoside antibiotics to MRSA. Furthermore, we identified that compound K, an unnatural ginsenoside analog, also increased the sensitivity of antibiotics to MRSA, similar to Rg3. By contrast, neither Rg3 nor compound K increased the sensitivity of fosfomycin, tetracycline, and erythromycin to MRSA, suggesting that these act selectively. In the present study, the natural compound Rg3 and its structural isomer, compound K, are potentially new antibiotic adjuvants against MRSA. Currently, multiple antibiotics are used to treat MRSA, but the use of these adjuvants is expected to enable the treatment of MRSA with a single antibiotic and low concentrations of antibiotics.
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Affiliation(s)
- Sakura Tsutamoto
- Food Hygiene and Environmental Health, Division of Applied Life Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan
| | - Yuina Iwasaki
- Food Hygiene and Environmental Health, Division of Applied Life Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan
| | - Akari Shinohara
- Food Hygiene and Environmental Health, Division of Applied Life Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan
| | - Risa Imamiya
- Food Hygiene and Environmental Health, Faculty of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan
| | - Keiichi Samukawa
- Department of Pharmacology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan
| | - Miki Kawada-Matsuo
- Department of Bacteriology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Hitoshi Komatsuzawa
- Department of Bacteriology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Yui Yamada
- Kyoto Prefectural Chutan Livestock Health Hygiene, Fukuchiyama, Japan
| | - Kouki Mandokoro
- Kyoto Prefectural Chutan Livestock Health Hygiene, Fukuchiyama, Japan
| | - Hiroshi Iwao
- Food Hygiene and Environmental Health, Division of Applied Life Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan
| | - Yasuhiko Horiguchi
- Department of Molecular Bacteriology, Research Institute of Microbial Diseases, Osaka University, Suita, Japan
| | - Mayuko Osada-Oka
- Food Hygiene and Environmental Health, Division of Applied Life Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan
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2
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Ozeki Y, Yokoyama A, Nishiyama A, Yoshida Y, Ohara Y, Mashima T, Tomiyama C, Shaban AK, Takeishi A, Osada-Oka M, Yamaguchi T, Tateishi Y, Maeyama JI, Hakamata M, Moro H, Kikuchi T, Hayashi D, Suzuki F, Yamamoto T, Iho S, Katahira M, Yamamoto S, Matsumoto S. Recombinant mycobacterial DNA-binding protein 1 with post-translational modifications boosts IFN-gamma production from BCG-vaccinated individuals' blood cells in combination with CpG-DNA. Sci Rep 2024; 14:9141. [PMID: 38644371 PMCID: PMC11033290 DOI: 10.1038/s41598-024-58836-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 04/03/2024] [Indexed: 04/23/2024] Open
Abstract
Tuberculosis remains a large health threat, despite the availability of the tuberculosis vaccine, BCG. As BCG efficacy gradually decreases from adolescence, BCG-Prime and antigen-booster may be an efficient strategy to confer vaccine efficacy. Mycobacterial DNA-binding protein 1 (MDP1, namely Rv2986c, hupB or HU) is a major Mycobacterium tuberculosis protein that induces vaccine-efficacy by co-administration with CpG DNA. To produce MDP1 for booster-vaccine use, we have created recombinant MDP1 produced in both Escherichia coli (eMDP1) and Mycolicibacterium smegmatis (mMDP1), an avirulent rapid-growing mycobacteria. We tested their immunogenicity by checking interferon (IFN)-gamma production by stimulated peripheral blood cells derived from BCG-vaccinated individuals. Similar to native M. tuberculosis MDP1, we observed that most lysin resides in the C-terminal half of mMDP1 are highly methylated. In contrast, eMDP1 had less post-translational modifications and IFN-gamma stimulation. mMDP1 stimulated the highest amount of IFN-gamma production among the examined native M. tuberculosis proteins including immunodominant MPT32 and Antigen 85 complex. MDP1-mediated IFN-gamma production was more strongly enhanced when combined with a new type of CpG DNA G9.1 than any other tested CpG DNAs. Taken together, these results suggest that the combination of mMDP1 and G9.1 possess high potential use for human booster vaccine against tuberculosis.
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Affiliation(s)
- Yuriko Ozeki
- Department of Bacteriology, Niigata University School of Medicine, 1-757, Asahimachi-Dori, Chuo-Ku, Niigata, 951-8510, Japan.
| | - Akira Yokoyama
- Department of Bacteriology, Niigata University School of Medicine, 1-757, Asahimachi-Dori, Chuo-Ku, Niigata, 951-8510, Japan
- Department of Respiratory Medicine, Graduate School of Medicine, University of Tokyo, 7-3-1, Hongo, Bunkyo-Ku, Tokyo, 113-8654, Japan
| | - Akihito Nishiyama
- Department of Bacteriology, Niigata University School of Medicine, 1-757, Asahimachi-Dori, Chuo-Ku, Niigata, 951-8510, Japan
| | - Yutaka Yoshida
- Department of Bacteriology, Niigata University School of Medicine, 1-757, Asahimachi-Dori, Chuo-Ku, Niigata, 951-8510, Japan
| | - Yukiko Ohara
- Department of Bacteriology, Niigata University School of Medicine, 1-757, Asahimachi-Dori, Chuo-Ku, Niigata, 951-8510, Japan
| | - Tsukasa Mashima
- Institute of Advanced Energy, Kyoto University, Gokasho, Uji, Kyoto, 611-0011, Japan
| | - Chikako Tomiyama
- Graduate School of Health Sciences, Niigata University, 2-746, Asahimachi-Dori, Chuo-Ku, Niigata, 951-8518, Japan
| | - Amina K Shaban
- Department of Bacteriology, Niigata University School of Medicine, 1-757, Asahimachi-Dori, Chuo-Ku, Niigata, 951-8510, Japan
| | - Atsuki Takeishi
- Department of Bacteriology, Niigata University School of Medicine, 1-757, Asahimachi-Dori, Chuo-Ku, Niigata, 951-8510, Japan
| | - Mayuko Osada-Oka
- Food Hygiene and Environmental Health, Division of Applied Life Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, 1-5, Shimogamo-Nakaragi-Cho, Sakyo-Ku, Kyoto, 606-8522, Japan
| | - Takehiro Yamaguchi
- Department of Bacteriology 1, National Institute of Infectious Disease, 1-23-1, Sinjuku-Ku, Tokyo, 162-8640, Japan
| | - Yoshitaka Tateishi
- Department of Bacteriology, Niigata University School of Medicine, 1-757, Asahimachi-Dori, Chuo-Ku, Niigata, 951-8510, Japan
| | - Jun-Ichi Maeyama
- Department of Bacteriology, Niigata University School of Medicine, 1-757, Asahimachi-Dori, Chuo-Ku, Niigata, 951-8510, Japan
- Reseach Center for Biological Products in the Next Generation, National Institute of Infectious Diseases, 4-7-1, Musashimurayama, Tokyo, 208-0011, Japan
| | - Mariko Hakamata
- Department of Bacteriology, Niigata University School of Medicine, 1-757, Asahimachi-Dori, Chuo-Ku, Niigata, 951-8510, Japan
- Department of Respiratory Medicine and Infectious Disease, Niigata University Graduate School of Medical and Dental Sciences, 1-757, Asahimachi-Dori, Chuo-Ku, Niigata, 951-8510, Japan
| | - Hiroshi Moro
- Department of Respiratory Medicine and Infectious Disease, Niigata University Graduate School of Medical and Dental Sciences, 1-757, Asahimachi-Dori, Chuo-Ku, Niigata, 951-8510, Japan
| | - Toshiaki Kikuchi
- Department of Respiratory Medicine and Infectious Disease, Niigata University Graduate School of Medical and Dental Sciences, 1-757, Asahimachi-Dori, Chuo-Ku, Niigata, 951-8510, Japan
| | - Daisuke Hayashi
- Central Laboratory, Japan BCG Laboratory, 3-1-5 Matsuyama, Kiyose, Tokyo, 204-0022, Japan
| | - Fumiko Suzuki
- Faculty of Medical Sciences, University of Fukui, 23-3, Matsuokashimoaizuki, Eiheiji-Cho, Yoshida-Gun, Fukui, 910-1193, Japan
| | - Toshiko Yamamoto
- Central Laboratory, Japan BCG Laboratory, 3-1-5 Matsuyama, Kiyose, Tokyo, 204-0022, Japan
- Department of Mycobacteriology, Leprosy Research Center, National Institute of Infectious Diseases, 4-2-1 Aobacho, Higashi-Murayama, Tokyo, 189-0002, Japan
| | - Sumiko Iho
- Department of Bacteriology, Niigata University School of Medicine, 1-757, Asahimachi-Dori, Chuo-Ku, Niigata, 951-8510, Japan
- Faculty of Medical Sciences, University of Fukui, 23-3, Matsuokashimoaizuki, Eiheiji-Cho, Yoshida-Gun, Fukui, 910-1193, Japan
- Louis Pasteur Center for Medical Research, 103-5 Tanaka Monzen-cho, Sakyo-ku, Kyoto, 606-8225, Japan
| | - Masato Katahira
- Institute of Advanced Energy, Kyoto University, Gokasho, Uji, Kyoto, 611-0011, Japan
| | - Saburo Yamamoto
- Central Laboratory, Japan BCG Laboratory, 3-1-5 Matsuyama, Kiyose, Tokyo, 204-0022, Japan
- Department of Mycobacteriology, Leprosy Research Center, National Institute of Infectious Diseases, 4-2-1 Aobacho, Higashi-Murayama, Tokyo, 189-0002, Japan
| | - Sohkichi Matsumoto
- Department of Bacteriology, Niigata University School of Medicine, 1-757, Asahimachi-Dori, Chuo-Ku, Niigata, 951-8510, Japan.
- Laboratory of Tuberculosis, Institute of Tropical Disease, Universitas Airlangga, Kampus C JI. Mulyorejo, Surabaya, 60113, Indonesia.
- Division of Research Aids, Hokkaido University Institute for Vaccine Research and Development, Kita 20, Nishi 10, Kita-Ku, Sapporo, 001-0020, Japan.
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Kishino M, Hida A, Chadeka EA, Inoue M, Osada-Oka M, Matsumoto S, Njenga SM, Hamano S, Nagi S. Association between diet quality and risk of stunting among school-aged children in Schistosoma mansoni endemic area of western Kenya: a cross-sectional study. Trop Med Health 2024; 52:12. [PMID: 38233936 DOI: 10.1186/s41182-023-00566-0] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 12/16/2023] [Indexed: 01/19/2024] Open
Abstract
BACKGROUND Healthy eating habits are essential for improving nutritional status and strengthening immunity against infectious diseases. This study examined the relationship between diet quality and stunting in school-aged children in an infectious disease-endemic area of western Kenya. METHODS This cross-sectional study included 260 school-aged children (age 9-17 years) enrolled in primary schools in Mbita Sub-county, western Kenya. The nutritional status was assessed using anthropometric measurements. Dietary intake was measured using food frequency questionnaires and evaluated using the Food Pyramid (FP) score, which indicates adherence to the Kenyan food-based dietary guideline. Information on the children's age, sex, maternal education, and household wealth index was collected using a household-based questionnaire. Infections with the predominant parasites, such as Schistosoma (S.) mansoni, were detected via microscopy. The trend associations of the FP score with food group intake were examined to characterize the dietary intake of this population. Logistic regression analysis was performed to investigate the relationship between stunting and FP score tertiles, adjusted for sociodemographic and economic indicators and parasitic infection status. RESULTS Among the studied schoolchildren, 15.0% exhibited stunting, while 76.2% were infected with S. mansoni. The mean FP score was 25.6 out of 50 points. A higher FP score was characterized by a high intake of roots and tubers, dairy products, pulses, and fruits and a low intake of cereals and animal-source foods. The analysis revealed a trend: a lower risk of stunting was evident in groups with elevated FP scores (p for trend = 0.065). However, these trend associations were observable among subjects with either negative or light S. mansoni infection (p for trend = 0.016). CONCLUSIONS A higher quality diet, as evaluated by FP scores, was associated with a low risk of stunting among school-aged children. Notably, this association seemed to weaken in the presence of a high burden of S. mansoni infection. It highlights the importance of enhancing dietary quality through the promotion of diverse nutrient-dense foods alongside effective S. mansoni infection control for improved growth. This study contributes fundamental knowledge for understanding the diet-malnutrition relationship in areas endemic for S. mansoni infection.
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Affiliation(s)
- Madoka Kishino
- Department of Food and Nutritional Science, Graduate School of Applied Bioscience, Tokyo University of Agriculture, Tokyo, Japan
| | - Azumi Hida
- Department of Nutritional Science, Faculty of Applied Bioscience, Tokyo University of Agriculture, Tokyo, Japan.
| | - Evans A Chadeka
- Nagasaki University Institute of Tropical Medicine (NUITM) - Kenya Medical Research Institute (KEMRI), Nairobi, Kenya
| | - Manabu Inoue
- Kyokuto Pharmaceutical Industrial Co., Ltd, Tokyo, Japan
| | - Mayuko Osada-Oka
- Food Hygiene and Environmental Health Division of Applied Life Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan
| | - Sohkichi Matsumoto
- Department of Bacteriology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
- Laboratory of Tuberculosis, Institute of Tropical Disease, Universitas Airlangga, Surabaya, East Java, Indonesia
- Hokkaido University Institute for Vaccine Research and Development, Kita 20, Nishi 10, Kita-ku, Sapporo, Japan
| | - Sammy M Njenga
- Eastern and Southern Africa Centre of International Parasite Control (ESACIPAC), Kenya Medical Research Institute (KEMRI), Nairobi, Kenya
| | - Shinjiro Hamano
- Department of Parasitology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
- The Joint Usage/Research Center on Tropical Disease, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
| | - Sachiyo Nagi
- Department of Parasitology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan.
- The Joint Usage/Research Center on Tropical Disease, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan.
- Department of Hygiene and Public Health, Tokyo Women's Medical University, Tokyo, Japan.
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4
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Natsui K, Tsuchiya A, Imamiya R, Osada-Oka M, Ishii Y, Koseki Y, Takeda N, Tomiyoshi K, Yamazaki F, Yoshida Y, Ohashi R, Ling Y, Ueda K, Moritoki N, Sato K, Nakajima T, Hasegawa Y, Okuda S, Shibata S, Terai S. Escherichia coli-derived outer-membrane vesicles induce immune activation and progression of cirrhosis in mice and humans. Liver Int 2023; 43:1126-1140. [PMID: 36751961 DOI: 10.1111/liv.15539] [Citation(s) in RCA: 2] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 01/14/2023] [Accepted: 02/05/2023] [Indexed: 02/09/2023]
Abstract
BACKGROUND AND AIMS Decompensated cirrhosis with fibrosis progression causes portal hypertension followed by an oedematous intestinal tract. These conditions weaken the barrier function against bacteria in the intestinal tract, a condition called leaky gut, resulting in invasion by bacteria and bacterial components. Here, we investigated the role of outer-membrane vesicles (OMVs) of Escherichia coli, which is the representative pathogenic gut-derived bacteria in patients with cirrhosis in the pathogenesis of cirrhosis. METHODS We investigated the involvement of OMVs in humans using human serum and ascites samples and also investigated the involvement of OMVs from E. coli in mice using mouse liver-derived cells and a mouse cirrhosis model. RESULTS In vitro, OMVs induced inflammatory responses to macrophages and neutrophils, including the upregulation of C-type lectin domain family 4 member E (Clec4e), and induced the suppression of albumin production in hepatocytes but had a relatively little direct effect on hepatic stellate cells. In a mouse cirrhosis model, administration of OMVs led to increased liver inflammation, especially affecting the activation of macrophages, worsening fibrosis and decreasing albumin production. Albumin administration weakened these inflammatory changes. In addition, multiple antibodies against bacterial components were increased with a progressing Child-Pugh grade, and OMVs were detected in ascites of patients with decompensated cirrhosis. CONCLUSIONS In conclusion, OMVs induce inflammation, fibrosis and suppression of albumin production, affecting the pathogenesis of cirrhosis. We believe that our study paves the way for the future prevention and treatment of cirrhosis.
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Affiliation(s)
- Kazuki Natsui
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Atsunori Tsuchiya
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan.,Future Medical Research Center for Exosome and Designer Cell (F-DEC), Niigata University, Niigata, Japan
| | - Risa Imamiya
- Food Hygiene and Environmental Health, Division of Applied Life Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan
| | - Mayuko Osada-Oka
- Food Hygiene and Environmental Health, Division of Applied Life Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan
| | - Yui Ishii
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Yohei Koseki
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Nobutaka Takeda
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Kei Tomiyoshi
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Fusako Yamazaki
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Yuki Yoshida
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Riuko Ohashi
- Histopathology Core Facility, Niigata University Faculty of Medicine, Niigata, Japan
| | - Yiwei Ling
- Medical AI Center, Niigata University School of Medicine, Niigata, Japan
| | - Koji Ueda
- Project for Realization of Personalized Cancer Medicine, Cancer Precision Medicine Center, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Nobuko Moritoki
- Electron Microscope Laboratory, Keio University School of Medicine, Tokyo, Japan
| | - Kazuhiro Sato
- Laboratory of Clinical Omics Research, Department of Applied Genomics, Kazusa DNA Research Institute, Chiba, Japan
| | - Takahiro Nakajima
- Laboratory of Medical Omics Research, KAZUSA DNA Research Institute, Chiba, Japan
| | - Yoshinori Hasegawa
- Laboratory of Clinical Omics Research, Department of Applied Genomics, Kazusa DNA Research Institute, Chiba, Japan
| | - Shujiro Okuda
- Medical AI Center, Niigata University School of Medicine, Niigata, Japan
| | - Shinsuke Shibata
- Future Medical Research Center for Exosome and Designer Cell (F-DEC), Niigata University, Niigata, Japan.,Electron Microscope Laboratory, Keio University School of Medicine, Tokyo, Japan.,Division of Microscopic Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Shuji Terai
- Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan.,Future Medical Research Center for Exosome and Designer Cell (F-DEC), Niigata University, Niigata, Japan
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5
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Hiramatsu Y, Nishida T, Nugraha DK, Osada-Oka M, Nakane D, Imada K, Horiguchi Y. Interference of flagellar rotation up-regulates the expression of small RNA contributing to Bordetella pertussis infection. Sci Adv 2022; 8:eade8971. [PMID: 36542710 PMCID: PMC9770993 DOI: 10.1126/sciadv.ade8971] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 11/18/2022] [Indexed: 06/17/2023]
Abstract
Bacterial small RNAs (sRNAs) posttranscriptionally regulate gene expressions involved in various biological processes, including pathogenicity. Our previous study identified sRNAs, the expression of which was up-regulated in Bordetella pertussis, the causative agent of whooping cough, upon tracheal colonization of the bacteria; however, their roles in bacterial infection remain unknown. Here, we found that one sRNA, Bpr4, contributes to B. pertussis infection by posttranscriptionally up-regulating filamentous hemagglutinin (FHA), a major adhesin of the bacteria. Bpr4 bound to the 5' untranslated region of fhaB mRNA encoding FHA and inhibited its degradation mediated by RNaseE. Our results demonstrated that Bpr4 up-regulation was triggered by the interference of flagellar rotation, which caused the disengagement of MotA, a flagellar stator. Subsequently, MotA activated a diguanylate cyclase to generate cyclic di-GMP, which plays a role in Bpr4 up-regulation through the RisK/RisA two-component system. Our findings indicate that a flagellum-triggered sensory system contributes to B. pertussis infection.
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Affiliation(s)
- Yukihiro Hiramatsu
- Department of Molecular Bacteriology, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Takashi Nishida
- Department of Molecular Bacteriology, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Dendi Krisna Nugraha
- Department of Molecular Bacteriology, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Mayuko Osada-Oka
- Food Hygiene and Environmental Health, Division of Applied Life Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, 1-5 Shimogamohangi-cho, Sakyo-ku, Kyoto 606-8522, Japan
| | - Daisuke Nakane
- Department of Engineering Science, Graduate School of Informatics and Engineering, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan
| | - Katsumi Imada
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Yasuhiko Horiguchi
- Department of Molecular Bacteriology, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan
- Center for Infectious Disease Education and Research, Osaka University, 2-8 Yamada-oka, Suita, Osaka 565-0871, Japan
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6
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Miura H, Jimbo I, Oda M, Noguchi M, Kawasaki K, Osada-Oka M, Tsukahara T, Inoue R. Effect of Porcine Colostral Exosomes on T Cells in the Peripheral Blood of Suckling Piglets. Animals (Basel) 2022; 12:ani12172172. [PMID: 36077893 PMCID: PMC9455021 DOI: 10.3390/ani12172172] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 07/15/2022] [Revised: 08/19/2022] [Accepted: 08/20/2022] [Indexed: 12/17/2022] Open
Abstract
Simple Summary Exosomes in porcine colostrum have gained attention as the possible key compounds involved in the growth and/or development of suckling piglets. In this study, peripheral blood mononuclear cells (PBMCs) from suckling piglets were cultured with or without milk-derived exosomes (control) in vitro. Porcine colostral exosomes increased the proportion of cytotoxic T (Tc) cells, while this phenomenon was not observed in PBMC whose endocytosis was inhibited. Moreover, exosome-treated PBMCs had a higher cytokine IL-2 concentration in the culture supernatant than the control. The present study demonstrated that porcine colostral exosomes could increase the Tc cell proportion in the peripheral blood of a suckling piglet, with the underlying mechanism believed to be the stimulation of IL-2 production in PBMCs via endocytosis. Abstract Growing evidence indicates that porcine colostral exosomes may contribute to the healthy development of piglets. Here, we evaluated in vitro the effect of porcine milk-derived exosomes, in particular colostral exosomes, on T cells in the peripheral blood of suckling piglets. A total of seven sows and thirteen suckling piglets were used. Peripheral blood mononuclear cells (PBMCs) from suckling piglets were cultured with or without milk-derived exosomes (control). Using flow cytometry, the proportion of each T cell subset in cultured PBMCs was analyzed three days post-incubation. PBMCs cultured with porcine colostral exosomes had a higher proportion of CD3+CD4−CD8+ T cells (cytotoxic T cells; Tc) than the control. However, exosomes induced no increase in the Tc cell population in PBMC whose endocytosis was inhibited. We further measured the concentrations of cytokines in the culture supernatant. Exosome-treated PBMCs had a higher cytokine IL-2 concentration than the control. The present study demonstrated that porcine colostral exosomes could increase the Tc cell proportion in the peripheral blood of suckling piglets, with the underlying mechanism believed to be the stimulation of IL-2 production in PBMCs via endocytosis. Moreover, our results suggested that porcine colostral exosomes were involved in the development of cellular immunity in suckling piglets.
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Affiliation(s)
- Hiroto Miura
- Laboratory of Animal Science, Setsunan University, Hirakata, Osaka 573-0101, Japan
| | - Itsuki Jimbo
- Laboratory of Animal Science, Kyoto Prefectural University, Kyoto, Kyoto 606-8522, Japan
| | - Machi Oda
- Laboratory of Animal Science, Setsunan University, Hirakata, Osaka 573-0101, Japan
| | - Michiko Noguchi
- Laboratory of Theriogenology, Azabu University, Sagamihara, Kanagawa 252-5201, Japan
| | - Kiyonori Kawasaki
- Graduate School of Agriculture, Kagawa University, Kita, Kagawa 761-0795, Japan
| | - Mayuko Osada-Oka
- Food Hygiene and Environmental Health, Faculty of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Kyoto 606-8522, Japan
| | | | - Ryo Inoue
- Laboratory of Animal Science, Setsunan University, Hirakata, Osaka 573-0101, Japan
- Laboratory of Animal Science, Kyoto Prefectural University, Kyoto, Kyoto 606-8522, Japan
- Correspondence: ; Tel.: +81-(0)-728965469
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7
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Kubo N, Nishii M, Osada-Oka M, Hatta H. A Comparative Study on Egg Yolk IgY Production with Different Adjuvants and their Inhibitory Effects on Staphylococcus aureus. J Poult Sci 2021; 58:192-199. [PMID: 34447284 PMCID: PMC8371533 DOI: 10.2141/jpsa.0200062] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 08/27/2020] [Indexed: 11/21/2022] Open
Abstract
Objectives: Atopic dermatitis (AD) is one of the most common skin disorders in infants and children and is often aggravated by increased Staphylococcus aureus (S. aureus) colonization. An inhibitory effect of a specific egg yolk antibody (IgY) on S. aureus growth was demonstrated in this study. Furthermore, the effects of water- or oil-based adjuvants on the preparation of anti-S. aureus IgY and hen immunization were compared. Methods: Hens were immunized intramuscularly with formalin-killed S. aureus mixed with either a water-soluble polysaccharide λ-carrageenan, oil-based Freund's complete adjuvant (FCA), or Freund's incomplete adjuvant (FIA). Anti-S. aureus IgYs (FIA-IgY, FCA/FIA-IgY, and λCarra-IgY) were purified from the egg yolk of immunized hen eggs, and the activity of the IgY against S. aureus antigen was measured by ELISA. The proportion of each IgY that was absorbed by S. aureus was also determined. Then, the effect of purified anti-S. aureus IgY on S. aureus growth inhibition was investigated in vitro. Results: The yolk of eggs and purified FIA-IgY from the FIA group showed the highest antibody activity, followed by FCA/FIA-IgY and λCarra-IgY. The proportion of each IgY that was absorbed by S. aureus antigen was as follows: FIA-IgY (18.1%), FCA/FIA-IgY (12.9%), and λCarra-IgY (7.0%). Only FIA-IgY significantly inhibited S. aureus growth in liquid medium. Conclusion: A specific IgY that was produced using the FIA adjutant inhibited S. aureus growth. Although water-soluble λ-carrageenan showed an adjuvant effect on anti-S. aureus IgY induction in egg yolk, but did not inhibit S. aureus growth. The use of the oil adjuvant FIA was necessary in the preparation of anti-S. aureus IgY as a treatment for AD symptoms.
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Affiliation(s)
- Nanase Kubo
- Graduate School of Kyoto Women's University, 35 Kitahiyoshi-cho, Imakumano, Higashiyama-ku, Kyoto 605-8501, Japan
| | - Mari Nishii
- Kyoto Prefecture Agricultural District Promotion Division, Yabunouchi-cho, Nishiiru, Shinmachi, Shimodachiuri-dori, Kamigyo-ku, kyoto 602-8570, Japan
| | - Mayuko Osada-Oka
- Food Hygiene and Environmental Health, Graduate School of Life and Environmental Science, Kyoto prefectural University, 1-5 Shimogamohangi-cho, Sakyo-ku, Kyoto 606-8522, Japan
| | - Hajime Hatta
- Graduate School of Kyoto Women's University, 35 Kitahiyoshi-cho, Imakumano, Higashiyama-ku, Kyoto 605-8501, Japan
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8
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Osada-Oka M, Goda N, Saiga H, Yamamoto M, Takeda K, Ozeki Y, Yamaguchi T, Soga T, Tateishi Y, Miura K, Okuzaki D, Kobayashi K, Matsumoto S. Metabolic adaptation to glycolysis is a basic defense mechanism of macrophages for Mycobacterium tuberculosis infection. Int Immunol 2020; 31:781-793. [PMID: 31201418 PMCID: PMC6839748 DOI: 10.1093/intimm/dxz048] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [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: 11/12/2018] [Accepted: 06/26/2019] [Indexed: 12/17/2022] Open
Abstract
Macrophages are major components of tuberculosis (TB) granulomas and are responsible for host defenses against the intracellular pathogen, Mycobacterium tuberculosis. We herein showed the strong expression of hypoxia-inducible factor-1α (HIF-1α) in TB granulomas and more rapid death of HIF-1α-conditional knockout mice than wild-type (WT) mice after M. tuberculosis infection. Although interferon-γ (IFN-γ) is a critical host-protective cytokine against intracellular pathogens, HIF-1-deficient macrophages permitted M. tuberculosis growth even after activation with IFN-γ. These results prompted us to investigate the role of HIF-1α in host defenses against infection. We found that the expression of lactate dehydrogenase-A (LDH-A) was controlled by HIF-1α in M. tuberculosis-infected macrophages IFN-γ independently. LDH-A is an enzyme that converts pyruvate to lactate and we found that the intracellular level of pyruvate in HIF-1α-deficient bone marrow-derived macrophages (BMDMs) was significantly higher than in WT BMDMs. Intracellular bacillus replication was enhanced by an increase in intracellular pyruvate concentrations, which were decreased by LDH-A. Mycobacteria in phagosomes took up exogenous pyruvate more efficiently than glucose, and used it as the feasible carbon source for intracellular growth. These results demonstrate that HIF-1α prevents the hijacking of pyruvate in macrophages, making it a fundamental host-protective mechanism against M. tuberculosis.
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Affiliation(s)
- Mayuko Osada-Oka
- Food Hygiene and Environmental Health, Graduate School of Life and Environmental Science, Kyoto Prefectural University, Kyoto, Kyoto, Japan
| | - Nobuhito Goda
- Department of Life Science and Medical BioScience, Waseda University School of Advanced Science and Engineering, Shinjuku-ku, Tokyo, Japan
| | - Hiroyuki Saiga
- Department of Microbiology and Immunology, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
| | - Masahiro Yamamoto
- Department of Microbiology and Immunology, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
| | - Kiyoshi Takeda
- Department of Microbiology and Immunology, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
| | - Yuriko Ozeki
- Department of Bacteriology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Niigata, Japan
| | - Takehiro Yamaguchi
- Department of Bacteriology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Niigata, Japan
| | - Tomoyoshi Soga
- Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata, Japan
| | - Yu Tateishi
- Department of Applied Pharmacology and Therapeutics, Osaka City University Graduate School of Medicine, Osaka, Osaka, Japan
| | - Katsuyuki Miura
- Department of Applied Pharmacology and Therapeutics, Osaka City University Graduate School of Medicine, Osaka, Osaka, Japan
| | - Daisuke Okuzaki
- Genome Information Research Center, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, Japan
| | - Kazuo Kobayashi
- Division of Public Health, Osaka Institute of Public Health, Osaka, Osaka, Japan
| | - Sohkichi Matsumoto
- Department of Bacteriology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Niigata, Japan
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9
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Kabei K, Tateishi Y, Shiota M, Osada-Oka M, Nishide S, Uchida J, Nakatani T, Matsunaga S, Yamaguchi T, Tomita S, Miura K. Effects of orally active hypoxia inducible factor alpha prolyl hydroxylase inhibitor, FG4592 on renal fibrogenic potential in mouse unilateral ureteral obstruction model. J Pharmacol Sci 2019; 142:93-100. [PMID: 31866051 DOI: 10.1016/j.jphs.2019.12.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [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: 09/25/2019] [Revised: 11/13/2019] [Accepted: 11/27/2019] [Indexed: 12/19/2022] Open
Abstract
Orally active hypoxia-inducible factor (HIF) prolyl hydroxylase inhibitors that stabilize HIF protein and stimulate the production of erythropoietin have been approved to treat renal anemia. Our previous report suggested that HIF-1α dependent fibrogenic mechanisms are operating at the early onset of renal fibrosis and its contribution declines with the progression in mouse unilateral ureteral obstruction (UUO) model. The aim of the study is to evaluate the renal fibrogenic potential of FG4592, a recently approved orally active HIF prolyl hydroxylase inhibitor in mouse UUO model. Male C57BL/6J mice orally given FG-4592 (12.5 mg/kg/day and 50 mg/kg/day) were subjected to UUO. Neither dose of FG-4592 affected renal fibrosis or macrophage infiltration. FG-4592 had no effects on increased mRNA of collagen I, collagen III or transforming growth factor-β1. At 3 days after UUO, higher dose of FG-4592 potentiated the increased mRNA expression of profibrogenic molecules, plasminogen activator inhibitor 1 (Pai-1) and connective tissue growth factor (Ctgf) but such potentiation disappeared at 7 days after UUO. It is suggested that FG-4592 used in the present study had little effects on renal fibrosis even though high dose of FG-4592 used in the present study transiently potentiated gene expression of Pai-1 and Ctgf in the UUO kidney.
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Affiliation(s)
- Kazuya Kabei
- Department of Applied Pharmacology and Therapeutics, Osaka City University Graduate School of Medicine, Asahimachi, Abeno-ku, Osaka, 545-8585, Japan; Department of Urology, Osaka City University Graduate School of Medicine, Asahimachi, Abeno-ku, Osaka, 545-8585, Japan; Minami-Osaka Hospital, Higashikagaya, Suminoe-ku, Osaka, 559-0012, Japan
| | - Yu Tateishi
- Ishikiri Seiki Hospital, Yayoi-cho, Higashiosaka, Osaka, 579-8026, Japan
| | - Masayuki Shiota
- Department of Research Support Platform, Osaka City University Graduate School of Medicine, Asahimachi, Abeno-ku, Osaka, 545-8585, Japan
| | - Mayuko Osada-Oka
- Food Hygiene and Environmental Health Division of Applied Life Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Sakyo-ku, Kyoto, 606-8522, Japan
| | - Shunji Nishide
- Department of Urology, Osaka City University Graduate School of Medicine, Asahimachi, Abeno-ku, Osaka, 545-8585, Japan; Department of Pharmacology, Osaka City University Graduate School of Medicine, Asahimachi, Abeno-ku, Osaka, 545-8585, Japan
| | - Junji Uchida
- Department of Urology, Osaka City University Graduate School of Medicine, Asahimachi, Abeno-ku, Osaka, 545-8585, Japan
| | - Tatsuya Nakatani
- Department of Urology, Osaka City University Graduate School of Medicine, Asahimachi, Abeno-ku, Osaka, 545-8585, Japan
| | - Shinji Matsunaga
- Department of Pharmacology, Osaka City University Graduate School of Medicine, Asahimachi, Abeno-ku, Osaka, 545-8585, Japan
| | - Takehiro Yamaguchi
- Department of Pharmacology, Osaka City University Graduate School of Medicine, Asahimachi, Abeno-ku, Osaka, 545-8585, Japan
| | - Shuhei Tomita
- Department of Pharmacology, Osaka City University Graduate School of Medicine, Asahimachi, Abeno-ku, Osaka, 545-8585, Japan
| | - Katsuyuki Miura
- Department of Applied Pharmacology and Therapeutics, Osaka City University Graduate School of Medicine, Asahimachi, Abeno-ku, Osaka, 545-8585, Japan; Ishikiri Seiki Hospital, Yayoi-cho, Higashiosaka, Osaka, 579-8026, Japan; Department of Pharmacology, Osaka City University Graduate School of Medicine, Asahimachi, Abeno-ku, Osaka, 545-8585, Japan.
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10
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Yamashita Y, Oe T, Kawakami K, Osada-Oka M, Ozeki Y, Terahara K, Yasuda I, Edwards T, Tanaka T, Tsunetsugu-Yokota Y, Matsumoto S, Ariyoshi K. CD4 + T Responses Other Than Th1 Type Are Preferentially Induced by Latency-Associated Antigens in the State of Latent Mycobacterium tuberculosis Infection. Front Immunol 2019; 10:2807. [PMID: 31849981 PMCID: PMC6897369 DOI: 10.3389/fimmu.2019.02807] [Citation(s) in RCA: 4] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 11/15/2019] [Indexed: 01/06/2023] Open
Abstract
Mycobacterium tuberculosis (M. tuberculosis) produces a diverse range of antigenic proteins in its dormant phase. The cytokine profiles of CD4+ T cell responses, especially subsets other than Th1 type (non-Th1 type), against these latency-associated M. tuberculosis antigens such as α-crystallin (Acr), heparin-binding hemagglutinin (HBHA), and mycobacterial DNA-binding protein 1 (MDP-1) remain elusive in relation to the clinical stage of M. tuberculosis infection. In the present study, peripheral blood mononuclear cells (PBMCs) collected from different stages of M. tuberculosis-infected cases and control PBMCs were stimulated with these antigens and ESAT-6/CFP-10. Cytokine profiles of CD4+ T cells were evaluated by intracellular cytokine staining using multicolor flow cytometry. Our results demonstrate that Th1 cytokine responses were predominant after TB onset independent of the type of antigen stimulation. On the contrary, non-Th1 cytokine responses were preferentially induced by latency-associated M. tuberculosis antigens, specifically IL-10 response against Acr in latent M. tuberculosis infection. From these results, we surmise a shift in the CD4+ T cell response from mixed non-Th1 to Th1 dominant type during TB progression.
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Affiliation(s)
- Yoshiro Yamashita
- Department of Clinical Medicine, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
| | - Toshiyuki Oe
- Department of Respiratory Medicine, National Hospital Organization Higashi-Saga Hospital, Miyaki, Japan
| | - Kenji Kawakami
- Department of Respiratory Medicine, National Hospital Organization Nagasaki-Kawatana Medical Center, Kawatana, Japan
| | - Mayuko Osada-Oka
- Food Hygiene and Environmental Health, Graduate School of Life and Environmental Science, Kyoto Prefectural University, Kyoto, Japan
| | - Yuriko Ozeki
- Department of Bacteriology, Niigata University Graduate School of Medicine, Niigata, Japan
| | - Kazutaka Terahara
- Department of Immunology, National Institute of Infectious Diseases, Tokyo, Japan
| | - Ikkoh Yasuda
- Department of Clinical Medicine, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
| | - Tansy Edwards
- Tropical Epidemiology Group, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Takeshi Tanaka
- Department of Clinical Medicine, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan.,Infection Control and Education Center, Nagasaki University Hospital, Nagasaki, Japan
| | - Yasuko Tsunetsugu-Yokota
- Department of Immunology, National Institute of Infectious Diseases, Tokyo, Japan.,Department of Medical Technology, School of Health Science, Tokyo University of Technology, Tokyo, Japan
| | - Sohkichi Matsumoto
- Department of Bacteriology, Niigata University Graduate School of Medicine, Niigata, Japan.,Laboratory of Tuberculosis, Institute of Tropical Disease, Universitas Airlangga, Surabaya, Indonesia
| | - Koya Ariyoshi
- Department of Clinical Medicine, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan.,Department of Global Health, School of Tropical Medicine and Global Health, Nagasaki, Japan
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11
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Hiramatsu Y, Osada-Oka M, Horiguchi Y. Bordet-Gengou agar medium supplemented with albumin-containing biologics for cultivation of bordetellae. Microbiol Immunol 2019; 63:513-516. [PMID: 31489969 DOI: 10.1111/1348-0421.12742] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 08/22/2019] [Accepted: 09/01/2019] [Indexed: 11/30/2022]
Abstract
Bordetella pertussis, B. parapertussis, and B. bronchiseptica cause respiratory infections in mammals, including humans, and are generally cultivated on Bordet-Gengou (BG) agar plates in laboratories. The medium requires animal blood as a supplement for better bacterial growth. However, using blood is problematic, as its constant supply is occasionally difficult because of the limited shelf-life. This study proposes modified BG agar plates supplemented with bovine serum albumin and fetal bovine serum as a simple and convenient medium that confers sufficient growth of bordetellae.
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Affiliation(s)
- Yukihiro Hiramatsu
- Department of Molecular Bacteriology, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, Japan
| | - Mayuko Osada-Oka
- Department of Molecular Bacteriology, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, Japan.,Food Hygiene and Environmental Health, Division of Applied Life Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Sakyo-ku, Kyoto, Japan
| | - Yasuhiko Horiguchi
- Department of Molecular Bacteriology, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, Japan
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12
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Maekura R, Kitada S, Osada-Oka M, Tateishi Y, Ozeki Y, Fujicawa T, Miki M, Jyunnko O, Mori M, Matsumoto S. Serum antibody profiles in individuals with latent Mycobacterium tuberculosis infection. Microbiol Immunol 2019; 63:130-138. [PMID: 30851131 PMCID: PMC6767593 DOI: 10.1111/1348-0421.12674] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [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: 12/28/2018] [Revised: 02/21/2019] [Accepted: 03/05/2019] [Indexed: 11/26/2022]
Abstract
One-third of the world's humans has latent tuberculosis infection (LTBI), representing a large pool of potentially active TB. Recent LTBI carries a higher risk of disease progression than remote LTBI. Recent studies suggest important roles of antibodies in TB pathology, prompting us to investigate serum antibody profiles in a cohort with LTBI. In this single-center prospective observational study, we analyzed IgG-antibody concentrations against five major Mycobacterium tuberculosis (Mtb) antigens (including 6 kDa early secretory antigenic target (ESAT6), CFP10, and antigen 85A, which are expressed mainly in the growth phase; and mycobacterial DNA-binding protein 1 (MDP1) and alpha-crystallin like protein (Acr), which are expressed in the dormant phases) in individuals with recent (n=13) or remote (n=12) LTBI, no Mtb infection (n=19), or active TB (n=15). Antibody titers against ESAT6 and MDP1 were significantly higher in individuals with recent LTBI than in those with no Mtb infection or remote LTBI. All pairwise antibody titers against these five major antigens were significantly correlated throughout the stages of Mtb infection. Five individuals with recent LTBI had significantly higher antibody titers against ESAT6 (P = 0.03), Ag85A (P = 0.048), Acr (P = 0.057), and MDP1 (P = 0.0001) than in individuals with remote LTBI; they were also outside the normal range (+2 SDs). One of these individuals was diagnosed with active pulmonary TB at 18-month follow-up examination. These findings indicated that concentrations of antibodies against both multiplying and dormant Mtb are higher in recent LTBI and that individuals with markedly higher antibody titers may be appropriate candidates for prophylactic therapy.
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Affiliation(s)
- Ryoji Maekura
- Department of Respiratory Medicine, National Hospital Organization Toneyama National Hospital, Toyonaka, Osaka, Japan.,Graduate School of Health Care Sciences, Jikei Institute, Osaka, Japan
| | - Seigo Kitada
- Department of Respiratory Medicine, National Hospital Organization Toneyama National Hospital, Toyonaka, Osaka, Japan
| | - Mayuko Osada-Oka
- Food Hygiene and Environmental Health, Division of Applied Life Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan
| | - Yoshitaka Tateishi
- Department of Bacteriology, Niigata University Graduate School of Medicine, Niigata, Japan
| | - Yuriko Ozeki
- Department of Bacteriology, Niigata University Graduate School of Medicine, Niigata, Japan
| | - Takeya Fujicawa
- Department of Respiratory Medicine, National Hospital Organization Toneyama National Hospital, Toyonaka, Osaka, Japan
| | - Mari Miki
- Department of Respiratory Medicine, National Hospital Organization Toneyama National Hospital, Toyonaka, Osaka, Japan
| | - Ogawa Jyunnko
- Department of Respiratory Medicine, National Hospital Organization Toneyama National Hospital, Toyonaka, Osaka, Japan
| | - Masahide Mori
- Department of Respiratory Medicine, National Hospital Organization Toneyama National Hospital, Toyonaka, Osaka, Japan
| | - Sohkichi Matsumoto
- Department of Bacteriology, Niigata University Graduate School of Medicine, Niigata, Japan
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13
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Yamaguchi T, Watanabe A, Tanaka M, Shiota M, Osada-Oka M, Sano S, Yoshiyama M, Miura K, Kitajima S, Matsunaga S, Tomita S, Iwao H, Izumi Y. A dipeptidyl peptidase-4 (DPP-4) inhibitor, linagliptin, attenuates cardiac dysfunction after myocardial infarction independently of DPP-4. J Pharmacol Sci 2019; 139:112-119. [DOI: 10.1016/j.jphs.2018.12.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 12/06/2018] [Accepted: 12/11/2018] [Indexed: 01/28/2023] Open
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14
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Takemura S, Azuma H, Osada-Oka M, Kubo S, Shibata T, Minamiyama Y. S-allyl-glutathione improves experimental liver fibrosis by regulating Kupffer cell activation in rats. Am J Physiol Gastrointest Liver Physiol 2018; 314:G150-G163. [PMID: 28971836 DOI: 10.1152/ajpgi.00023.2017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
S-allyl-glutathione (SAG) is one of the metabolites of diallyl sulfide (DAS), a component of garlic. DAS has shown preventative effects on carcinogenesis in animal models. However, whether synthetic SAG can improve liver fibrosis has not been investigated. We examined the potential preventive effects of SAG on acute and chronic models of liver fibrosis by chronic carbon tetrachloride (CCl4) administration. SAG inhibited liver fibrogenesis induced by CCl4 in a dose-dependent manner and reduced heat shock protein-47 (HSP47), a collagen-specific chaperone, and other fibrosis markers. In fibrosis regression models, after administration of either CCl4 for 9 wk or dimethyl nitrosamine (DMN) for 6 wk, SAG markedly accelerated fibrolysis in both models. In the regression stage of DMN-treated liver, SAG normalized the ratio of M2 phenotype (expression of mannose receptor) in Kupffer cells (KCs). Consistent with these results, the culture supernatants of SAG-treated M2-phenotype KCs inhibited collagen-α1(I) chain (COL1A1) mRNA expression in primary culture-activated rat hepatic stellate cells (HSCs). However, SAG did not directly inhibit HSC activation. In an acute model of CCl4 single injection, SAG inhibited hepatic injury dose dependently consistent with the inhibited the elevation of the bilirubin and ALT levels. These findings suggest that SAG could improve the fibrogenic and fibrolysis cascade via the regulation of excess activated and polarized KCs. SAG may also serve as a preventive and therapeutic agent in fibrosis of other organs for which current clinical therapy is unavailable. NEW & NOTEWORTHY S-allyl-glutathione (SAG) is a metabolite of diallyl sulfide, a component of garlic. SAG increased hepatic glutathione levels and GSH-to-GSSG ratio in normal rats. SAG treatment before or after liver fibrosis from chronic CCl4 administration improved liver fibrosis and regression. SAG decreased heat shock protein-47 (HSP47), a collagen-specific chaperone, and other fibrosis markers in CCl4-treated livers. SAG-treated Kupffer cell conditioned medium also inhibited collagen-α1(I) chain (COL1A1) mRNA expression and other markers in primary culture hepatic stellate cells.
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Affiliation(s)
- Shigekazu Takemura
- Department of Hepato-Biliary-Pancreatic Surgery, Graduate School of Medicine, Osaka City University , Osaka , Japan
| | - Hideki Azuma
- Department of Applied and Bioapplied Chemistry, Graduate School of Engineering, Osaka City University , Osaka , Japan
| | - Mayuko Osada-Oka
- Food Hygiene and Environmental Health Division of Applied Life Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University , Kyoto , Japan
| | - Shoji Kubo
- Department of Hepato-Biliary-Pancreatic Surgery, Graduate School of Medicine, Osaka City University , Osaka , Japan
| | - Toshihiko Shibata
- Department of Hepato-Biliary-Pancreatic Surgery, Graduate School of Medicine, Osaka City University , Osaka , Japan
| | - Yukiko Minamiyama
- Department of Hepato-Biliary-Pancreatic Surgery, Graduate School of Medicine, Osaka City University , Osaka , Japan.,Food Hygiene and Environmental Health Division of Applied Life Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University , Kyoto , Japan
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15
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Kabei K, Tateishi Y, Nozaki M, Tanaka M, Shiota M, Osada-Oka M, Nishide S, Uchida J, Nakatani T, Tomita S, Miura K. Role of hypoxia-inducible factor-1 in the development of renal fibrosis in mouse obstructed kidney: Special references to HIF-1 dependent gene expression of profibrogenic molecules. J Pharmacol Sci 2017; 136:31-38. [PMID: 29352658 DOI: 10.1016/j.jphs.2017.12.004] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [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: 10/25/2017] [Revised: 11/28/2017] [Accepted: 12/05/2017] [Indexed: 01/26/2023] Open
Abstract
The aim of the study is to clarify the role of hypoxia-inducible factor-1 (HIF-1) in the development of renal fibrosis in mouse obstructive nephropathy. We used mice with floxed HIF-1α alleles and tamoxifen-inducible Cre/ERT2 recombinase under ubiquitin C promoter to induce global HIF-1α deletion. Following tamoxifen administration, mice were subjected to unilateral ureteral obstruction (UUO). At 3, 7 and 14 days after UUO, renal gene expression profiles and interstitial fibrosis were assessed. HIF-1 dependent up-regulation of prolyl hydroxylase 3 and glucose transporter-1 was observed in the obstructed kidney at 3 and 7 days but not at 14 days after UUO. Various factors promoting fibrosis were up-regulated during the development of fibrosis. HIF-1 dependent gene expression of profibrotic molecules, plasminogen activator inhibitor 1, connective tissue growth factor, lysyl oxidase like 2 and transglutaminase 2 was observed in the obstructed kidney but such HIF-1 dependency was limited to the early onset of renal fibrosis. Global HIF-1 deletion tended to attenuate interstitial collagen I deposition at 3 days but had no effects thereafter. It is suggested that HIF-1 dependent profibrogenic mechanisms are operating at the early onset of renal fibrosis but its contribution declines with the progression in mouse UUO model.
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Affiliation(s)
- Kazuya Kabei
- Department of Applied Pharmacology and Therapeutics, Osaka City University Graduate School of Medicine, Asahimachi, Abeno-ku, Osaka 545-8585, Japan; Department of Urology, Osaka City University Graduate School of Medicine, Asahimachi, Abeno-ku, Osaka 545-8585, Japan
| | - Yu Tateishi
- Ishikiri Seiki Hospital, Yayoi-cho, Higashiosaka, Osaka 579-8026, Japan
| | - Masakazu Nozaki
- Department of Applied Pharmacology and Therapeutics, Osaka City University Graduate School of Medicine, Asahimachi, Abeno-ku, Osaka 545-8585, Japan
| | - Masako Tanaka
- Department of Applied Pharmacology and Therapeutics, Osaka City University Graduate School of Medicine, Asahimachi, Abeno-ku, Osaka 545-8585, Japan; Department of Life Science and Medical BioScience, School of Advanced Science and Engineering, Waseda University, Wakamatsu-cho, Shinjuku-ku, Tokyo, 162-8480, Japan
| | - Masayuki Shiota
- Department of Research Support Platform, Osaka City University Graduate School of Medicine, Asahimachi, Abeno-ku, Osaka 545-8585, Japan
| | - Mayuko Osada-Oka
- Food Hygiene and Environmental Health, Division of Applied Life Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Sakyo-ku, Kyoto 606-8522, Japan
| | - Shunji Nishide
- Department of Urology, Osaka City University Graduate School of Medicine, Asahimachi, Abeno-ku, Osaka 545-8585, Japan
| | - Junji Uchida
- Department of Urology, Osaka City University Graduate School of Medicine, Asahimachi, Abeno-ku, Osaka 545-8585, Japan
| | - Tatsuya Nakatani
- Department of Urology, Osaka City University Graduate School of Medicine, Asahimachi, Abeno-ku, Osaka 545-8585, Japan
| | - Shuhei Tomita
- Department of Pharmacology, Osaka City University Graduate School of Medicine, Asahimachi, Abeno-ku, Osaka 545-8585, Japan
| | - Katsuyuki Miura
- Department of Applied Pharmacology and Therapeutics, Osaka City University Graduate School of Medicine, Asahimachi, Abeno-ku, Osaka 545-8585, Japan.
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Chadeka EA, Nagi S, Sunahara T, Cheruiyot NB, Bahati F, Ozeki Y, Inoue M, Osada-Oka M, Okabe M, Hirayama Y, Changoma M, Adachi K, Mwende F, Kikuchi M, Nakamura R, Kalenda YDJ, Kaneko S, Hirayama K, Shimada M, Ichinose Y, Njenga SM, Matsumoto S, Hamano S. Spatial distribution and risk factors of Schistosoma haematobium and hookworm infections among schoolchildren in Kwale, Kenya. PLoS Negl Trop Dis 2017; 11:e0005872. [PMID: 28863133 PMCID: PMC5599053 DOI: 10.1371/journal.pntd.0005872] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Revised: 09/14/2017] [Accepted: 08/14/2017] [Indexed: 11/19/2022] Open
Abstract
Background Large-scale schistosomiasis control programs are implemented in regions with diverse social and economic environments. A key epidemiological feature of schistosomiasis is its small-scale heterogeneity. Locally profiling disease dynamics including risk factors associated with its transmission is essential for designing appropriate control programs. To determine spatial distribution of schistosomiasis and its drivers, we examined schoolchildren in Kwale, Kenya. Methodology/Principal findings We conducted a cross-sectional study of 368 schoolchildren from six primary schools. Soil-transmitted helminths and Schistosoma mansoni eggs in stool were evaluated by the Kato-Katz method. We measured the intensity of Schistosoma haematobium infection by urine filtration. The geometrical mean intensity of S. haematobium was 3.1 eggs/10 ml urine (school range, 1.4–9.2). The hookworm geometric mean intensity was 3.2 eggs/g feces (school range, 0–17.4). Heterogeneity in the intensity of S. haematobium and hookworm infections was evident in the study area. To identify factors associated with the intensity of helminth infections, we utilized negative binomial generalized linear mixed models. The intensity of S. haematobium infection was associated with religion and socioeconomic status (SES), while that of hookworm infection was related to SES, sex, distance to river and history of anthelmintic treatment. Conclusions/Significance Both S. haematobium and hookworm infections showed micro-geographical heterogeneities in this Kwale community. To confirm and explain our observation of high S. haematobium risk among Muslims, further extensive investigations are necessary. The observed small scale clustering of the S. haematobium and hookworm infections might imply less uniform strategies even at finer scale for efficient utilization of limited resources. The World Health Organization is spearheading the war on neglected tropical diseases, including helminth infections, by encouraging its member states to intensify control efforts. This call has recently been answered in most endemic regions of helminthiasis and governments are scaling up chemotherapy-based control programs in collaboration with private and public partners. However, it is necessary to clearly understand factors driving local transmission dynamics of helminth infections to design effective control programs. Here, we conducted a cross-sectional survey of 368 primary schoolchildren in Kwale, Kenya, and identified factors associated with the intensity of Schistosoma haematobium and hookworm infections. The negative binomial generalized linear mixed model showed the intensity of S. haematobium infection was much higher among Muslims and schoolchildren from low socioeconomic status households. High intensity of hookworm infection was associated with sex, SES, distance to river and history of anthelmintic treatment. Our findings demonstrate considering social and cultural drivers of NTDs could be beneficial in designing of efficient control programs and expediting NTDs control.
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Affiliation(s)
- Evans Asena Chadeka
- Leading Program, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
- Department of Parasitology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
- The Joint Usage/Research Center on Tropical Disease, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
| | - Sachiyo Nagi
- Department of Parasitology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
| | - Toshihiko Sunahara
- The Joint Usage/Research Center on Tropical Disease, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
- Department of Vector Ecology and Environment, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
| | | | - Felix Bahati
- Nagasaki University, Kenya Research Station, NUITM-KEMRI Project, Nairobi, Kenya
| | - Yuriko Ozeki
- Department of Bacteriology, Niigata University School of Medicine, Niigata, Japan
| | - Manabu Inoue
- Department of Bacteriology and Virology, Osaka-City University Graduate School of Medicine, Osaka, Japan
| | - Mayuko Osada-Oka
- Food Hygiene and Environmental Health Division of Applied Life Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan
| | - Mayuko Okabe
- Department of Immunology, National Institute of Infectious Diseases, Tokyo, Japan
| | - Yukio Hirayama
- Department of Bacteriology, Niigata University School of Medicine, Niigata, Japan
| | - Mwatasa Changoma
- Nagasaki University, Kenya Research Station, NUITM-KEMRI Project, Nairobi, Kenya
| | - Keishi Adachi
- Department of Parasitology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
- Department of Immunology, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Faith Mwende
- Eastern and Southern Africa Centre of International Parasite Control (ESACIPAC), Kenya Medical Research Institute (KEMRI), Nairobi, Kenya
| | - Mihoko Kikuchi
- The Joint Usage/Research Center on Tropical Disease, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
- Department of Immunogenetics, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
| | - Risa Nakamura
- Leading Program, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
- Department of Parasitology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
- The Joint Usage/Research Center on Tropical Disease, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
| | - Yombo Dan Justin Kalenda
- Department of Parasitology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
- The Joint Usage/Research Center on Tropical Disease, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
- Department of Eco-Epidemiology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
| | - Satoshi Kaneko
- The Joint Usage/Research Center on Tropical Disease, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
- Nagasaki University, Kenya Research Station, NUITM-KEMRI Project, Nairobi, Kenya
- Department of Eco-Epidemiology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
| | - Kenji Hirayama
- Leading Program, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
- The Joint Usage/Research Center on Tropical Disease, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
- Department of Immunogenetics, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
| | - Masaaki Shimada
- Nagasaki University, Kenya Research Station, NUITM-KEMRI Project, Nairobi, Kenya
- Department of Eco-Epidemiology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
| | - Yoshio Ichinose
- Leading Program, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
- The Joint Usage/Research Center on Tropical Disease, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
- Nagasaki University, Kenya Research Station, NUITM-KEMRI Project, Nairobi, Kenya
| | - Sammy M. Njenga
- Eastern and Southern Africa Centre of International Parasite Control (ESACIPAC), Kenya Medical Research Institute (KEMRI), Nairobi, Kenya
| | - Sohkichi Matsumoto
- Department of Bacteriology, Niigata University School of Medicine, Niigata, Japan
| | - Shinjiro Hamano
- Leading Program, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
- Department of Parasitology, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
- The Joint Usage/Research Center on Tropical Disease, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki, Japan
- Nagasaki University, Kenya Research Station, NUITM-KEMRI Project, Nairobi, Kenya
- * E-mail:
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Matsui T, Ichikawa H, Fujita T, Takagi T, Osada-Oka M, Minamiyama Y. Histidine deficiency attenuates cell viability in rat intestinal epithelial cells by apoptosis via mitochondrial dysfunction. Journal of Nutrition & Intermediary Metabolism 2017. [DOI: 10.1016/j.jnim.2017.05.002] [Citation(s) in RCA: 7] [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: 12/18/2022] Open
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Osada-Oka M, Shiota M, Izumi Y, Nishiyama M, Tanaka M, Yamaguchi T, Sakurai E, Miura K, Iwao H. Macrophage-derived exosomes induce inflammatory factors in endothelial cells under hypertensive conditions. Hypertens Res 2016; 40:353-360. [PMID: 27881852 DOI: 10.1038/hr.2016.163] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Revised: 10/03/2016] [Accepted: 10/05/2016] [Indexed: 12/29/2022]
Abstract
Hypertension is one of the most important cardiovascular risk factors and results in macrophage infiltration of blood vessels. However, how macrophages coordinate inflammatory responses with endothelial cells (ECs) remains unclear. In this study, we investigated whether exosomes upregulate the expression of inflammatory factors in ECs under hypertensive conditions. Hypertension was induced in rats by continuous infusion of angiotensin II (Ang II). Exosomes were purified from rat serum by density gradient and ultracentrifugation and used to stimulate human coronary artery ECs (HCAECs). Moreover, the interactions between HCAECs and exosomes from human THP-1-derived macrophages were analyzed. Administration of Ang II enhanced the expression of CD68, a macrophage marker, in rat hearts, suggesting enhanced infiltration of macrophages. In addition, the expression of intracellular adhesion molecule-1 (ICAM1) and plasminogen activator inhibitor-1 (PAI-1), a proinflammatory factor, was increased in hypertensive rat hearts compared with control rats. CD68 protein expression and an increase in the expression of some exosome markers were detected in exosomes from hypertensive rat serum. Moreover, the exosomes upregulated the expression levels of ICAM1 and PAI-1 in HCAECs. The level of miR-17, a negative regulator of ICAM1 expression, was markedly decreased in exosomes from hypertensive rat serum compared with exosomes from control rats. Interestingly, Ang II-stimulated THP-1-derived exosomes also enhanced the expression of ICAM1 and PAI-1 and contained reduced levels of miR-17 compared with exosomes from unstimulated cells. These results suggest that inflammation of ECs under hypertensive conditions is caused, at least in part, by macrophage-derived exosomes.
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Affiliation(s)
- Mayuko Osada-Oka
- Food Hygiene and Environmental Health Division of Applied Life Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan.,Department of Pharmacology, Osaka City University Medical School, Osaka, Japan
| | - Masayuki Shiota
- Department of Pharmacology, Osaka City University Medical School, Osaka, Japan
| | - Yasukatsu Izumi
- Department of Pharmacology, Osaka City University Medical School, Osaka, Japan
| | - Masaki Nishiyama
- Department of Pharmacology, Osaka City University Medical School, Osaka, Japan
| | - Masako Tanaka
- Applied Pharmacology and Therapeutics, Osaka City University Medical School, Osaka, Japan
| | - Takehiro Yamaguchi
- Department of Bacteriology, Niigata University Graduate School of Medicine, Niigata, Japan
| | - Emi Sakurai
- Department of Pharmacology, Osaka City University Medical School, Osaka, Japan.,Applied Pharmacology and Therapeutics, Osaka City University Medical School, Osaka, Japan
| | - Katsuyuki Miura
- Department of Pharmacology, Osaka City University Medical School, Osaka, Japan.,Applied Pharmacology and Therapeutics, Osaka City University Medical School, Osaka, Japan
| | - Hiroshi Iwao
- Department of Pharmacology, Osaka City University Medical School, Osaka, Japan.,Department of Education, Shitennoji University, Habikino, Japan
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Tanaka M, Shiota M, Nakao T, Uemura R, Nishi S, Ohkawa Y, Matsumoto M, Yamaguchi M, Osada-Oka M, Inagaki A, Takahashi K, Nakayama KI, Gi M, Izumi Y, Miura K, Iwao H. Identification of low-abundance proteins in serum via the isolation of HSP72 complexes. J Proteomics 2016; 136:214-21. [DOI: 10.1016/j.jprot.2016.01.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Revised: 12/30/2015] [Accepted: 01/05/2016] [Indexed: 12/16/2022]
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20
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Ozeki Y, Igarashi M, Doe M, Tamaru A, Kinoshita N, Ogura Y, Iwamoto T, Sawa R, Umekita M, Enany S, Nishiuchi Y, Osada-Oka M, Hayashi T, Niki M, Tateishi Y, Hatano M, Matsumoto S. A New Screen for Tuberculosis Drug Candidates Utilizing a Luciferase-Expressing Recombinant Mycobacterium bovis Bacillus Calmette-Guéren. PLoS One 2015; 10:e0141658. [PMID: 26571296 PMCID: PMC4646695 DOI: 10.1371/journal.pone.0141658] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Accepted: 10/12/2015] [Indexed: 02/04/2023] Open
Abstract
Tuberculosis (TB) is a serious infectious disease caused by a bacterial pathogen. Mortality from tuberculosis was estimated at 1.5 million deaths worldwide in 2013. Development of new TB drugs is needed to not only to shorten the medication period but also to treat multi-drug resistant and extensively drug-resistant TB. Mycobacterium tuberculosis (Mtb) grows slowly and only multiplies once or twice per day. Therefore, conventional drug screening takes more than 3 weeks. Additionally, a biosafety level-3 (BSL-3) facility is required. Thus, we developed a new screening method to identify TB drug candidates by utilizing luciferase-expressing recombinant Mycobacterium bovis bacillus Calmette-Guéren (rBCG). Using this method, we identified several candidates in 4 days in a non-BSL-3 facility. We screened 10,080 individual crude extracts derived from Actinomyces and Streptomyces and identified 137 extracts which possessed suppressive activity to the luciferase of rBCG. Among them, 41 compounds inhibited the growth of both Mtb H37Rv and the extensively drug-resistant Mtb (XDR-Mtb) strains. We purified the active substance of the 1904–1 extract, which possessed strong activity toward rBCG, Mtb H37Rv, and XDR-Mtb but was harmless to the host eukaryotic cells. The MIC of this substance was 0.13 μg/ml, 0.5 μg/ml, and 2.0–7.5 μg/ml against rBCG, H37Rv, and 2 XDR-strains, respectively. Its efficacy was specific to acid-fast bacterium except for the Mycobacterium avium intracellular complex. Mass spectrometry and nuclear magnetic resonance analyses revealed that the active substance of 1904–1 was cyclomarin A. To confirm the mode of action of the 1904-1-derived compound, resistant BCG clones were used. Whole genome DNA sequence analysis showed that these clones contained a mutation in the clpc gene which encodes caseinolytic protein, an essential component of an ATP-dependent proteinase, and the likely target of the active substance of 1904–1. Our method provides a rapid and convenient screen to identify an anti-mycobacterial drug.
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Affiliation(s)
- Yuriko Ozeki
- Department of Bacteriology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
- * E-mail:
| | - Masayuki Igarashi
- Department of Microbiology, Institute of Microbial Chemistry, Microbial Chemistry Research Foundation, Tokyo, Japan
| | - Matsumi Doe
- Graduate School of Sciences, Osaka City University, Osaka, Japan
| | - Aki Tamaru
- Bacteriology Division, Osaka Prefectural Institute of Public Health, Osaka, Japan
| | - Naoko Kinoshita
- Department of Microbiology, Institute of Microbial Chemistry, Microbial Chemistry Research Foundation, Tokyo, Japan
| | - Yoshitoshi Ogura
- Division of Bioenvironmental Science, Frontier Science Research Center, University of Miyazaki, Miyazaki, Japan
| | - Tomotada Iwamoto
- Department of Microbiology, Kobe Institute of Health, Kobe, Japan
| | - Ryuichi Sawa
- Department of Microbiology, Institute of Microbial Chemistry, Microbial Chemistry Research Foundation, Tokyo, Japan
| | - Maya Umekita
- Department of Microbiology, Institute of Microbial Chemistry, Microbial Chemistry Research Foundation, Tokyo, Japan
| | - Shymaa Enany
- Department of Bacteriology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
- Department of Microbiology and Immunology, Faculty of Pharmacy, Suez Canal University, Ismailia, Egypt
| | - Yukiko Nishiuchi
- Toneyama Institute for Tuberculosis Research, Osaka City University Medical School, Osaka, Japan
| | - Mayuko Osada-Oka
- Food Hygiene and Environmental Health Division of Applied Life Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan
| | - Tetsuya Hayashi
- Division of Bioenvironmental Science, Frontier Science Research Center, University of Miyazaki, Miyazaki, Japan
| | - Mamiko Niki
- Department of Bacteriology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Yoshitaka Tateishi
- Department of Bacteriology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Masaki Hatano
- Department of Microbiology, Institute of Microbial Chemistry, Microbial Chemistry Research Foundation, Tokyo, Japan
| | - Sohkichi Matsumoto
- Department of Bacteriology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
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Tanaka M, Yamaguchi M, Shiota M, Kawamoto Y, Takahashi K, Inagaki A, Osada-Oka M, Harada A, Wanibuchi H, Izumi Y, Miura K, Iwao H, Ohkawa Y. Establishment of neutralizing rat monoclonal antibodies for fibroblast growth factor-2. Monoclon Antib Immunodiagn Immunother 2015; 33:261-9. [PMID: 25171006 DOI: 10.1089/mab.2013.0085] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Fibroblast growth factor-2 (FGF-2) plays a critical role in endothelial survival, proliferation, and angiogenesis and is localized on the cell membrane by binding to heparan sulfate proteoglycans. Here we established a neutralizing monoclonal antibody, 1B9B9, against FGF-2 using the rat medial iliac lymph node method. 1B9B9 blocked the binding of FGF-2 to its receptor, inhibiting FGF-2-induced proliferation and corresponding downstream signaling in endothelial cells. Treatment of human umbilical vein endothelial cells with 1B9B9 reduced the basal phosphorylation levels of Akt and MAPK. Furthermore, continued treatment with 1B9B9 induced cell death by apoptosis. Compared with FGF-2 knockdown, 1B9B9 significantly reduced cell survival. In addition, the combination of FGF-2 siRNA and 1B9B9 showed a synergistic effect. The data indicate that 1B9B9 established by the rat iliac lymph node method is a fully compatible neutralizing antibody.
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Affiliation(s)
- Masako Tanaka
- 1 Department of Pharmacology, Osaka City University Medical School , Osaka, Japan
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Tateishi Y, Osada-Oka M, Tanaka M, Shiota M, Izumi Y, Ishimura E, Motoyama K, Inaba M, Miura K. Myeloid HIF-1 attenuates the progression of renal fibrosis in murine obstructive nephropathy. J Pharmacol Sci 2015; 127:181-9. [DOI: 10.1016/j.jphs.2014.12.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Revised: 11/18/2014] [Accepted: 12/07/2014] [Indexed: 12/19/2022] Open
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Yamaguchi T, Yamazaki T, Kawaguchi H, Tawa M, Nakamura Y, Shiota M, Osada-Oka M, Tanimoto A, Okamura T, Miura K, Iwao H, Yoshiyama M, Izumi Y. Noninvasive metabolic syndrome model using an extremely small minipig, the microminipig. J Pharmacol Sci 2014; 126:168-71. [PMID: 25242170 DOI: 10.1254/jphs.14171sc] [Citation(s) in RCA: 5] [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: 10/24/2022] Open
Abstract
Metabolic syndrome (MetS) induces serious complications; therefore, we developed a noninvasive MetS model using an extremely small minipig, the Microminipig. For 8 weeks, Microminipigs were administrated a high-fat and high-cholesterol diet (HFCD) for atherosclerosis and N(G)-nitro-l-arginine methyl ester (l-NAME) for inhibiting nitric oxide synthase. HFCD significantly increased serum low-density lipoprotein levels, l-NAME increased blood pressure and cardiac hypertrophy, and HFCD-induced aortal arteriosclerosis was accelerated by l-NAME administration. Endothelium-dependent relaxation of the coronary artery was remarkably decreased by l-NAME administration. This model may be useful for elucidating the mechanisms of MetS and developing new therapeutic medicines for its treatment.
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Affiliation(s)
- Takehiro Yamaguchi
- Department of Cardiovascular Medicine, Osaka City University Medical School, Japan
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24
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Izumi Y, Yamaguchi T, Yamazaki T, Yamashita N, Nakamura Y, Shiota M, Tanaka M, Sano S, Osada-Oka M, Shimada K, Wanibuchi H, Miura K, Yoshiyama M, Iwao H. Percutaneous carbon dioxide treatment using a gas mist generator enhances the collateral blood flow in the ischemic hindlimb. J Atheroscler Thromb 2014; 22:38-51. [PMID: 25132376 DOI: 10.5551/jat.23770] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
AIM Highly concentrated carbon dioxide (CO2) is thought to be useful for ischemic diseases. We investigated whether treatment with a few micrometers of CO2 molecules atomized via two fluidnozzles (CO2 mist) exerts an angiogenic effect in a mouse ischemic hindlimb model. METHODS Mice with unilateral hindlimb ischemia were divided into untreated (UT), 100% CO2 gas alone-treated (CG), mixed air (O2; 20%, N2; 80%) mist-treated (AM) and 100% CO2 mist-treated (CM) groups. The lower body of the mice was encased in a polyethylene bag filled with each gaseous agent using a gas mist generator for 10 minutes daily. RESULTS According to a laser Doppler analysis, the ischemic hindlimb blood flow was persistently higher after the seventh day of induction of ischemia in the CM group than in the UT group. The capillary density was also greater in the CM group on day 28 compared with that observed in the UT group. In addition, the parameters in the AM and CG groups were similar to those obtained in the UT group. The observed effects were abolished by the administration of an inhibitor of nitric oxide synthase (NOS). The vascular endothelial growth factor mRNA expression and protein levels and the phosphorylated endothelial NOS level were increased in the CM group compared with that observed in the UT group. A proteomic analysis using liquid chromatography-tandem mass spectrometry identified novel protein candidates regulated by CO2 mist. CONCLUSION Percutaneous CO2 mist therapy may be useful for treating ischemia-induced angiogenesis.
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Affiliation(s)
- Yasukatsu Izumi
- Department of Cardiovascular Medicine, Osaka City University Medical School, Osaka, Japan; Department of Pharmacology, Osaka City University Medical School, Osaka, Japan
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Fujii Y, Kaneko S, Nzou SM, Mwau M, Njenga SM, Tanigawa C, Kimotho J, Mwangi AW, Kiche I, Matsumoto S, Niki M, Osada-Oka M, Ichinose Y, Inoue M, Itoh M, Tachibana H, Ishii K, Tsuboi T, Yoshida LM, Mondal D, Haque R, Hamano S, Changoma M, Hoshi T, Kamo KI, Karama M, Miura M, Hirayama K. Serological surveillance development for tropical infectious diseases using simultaneous microsphere-based multiplex assays and finite mixture models. PLoS Negl Trop Dis 2014; 8:e3040. [PMID: 25078404 PMCID: PMC4117437 DOI: 10.1371/journal.pntd.0003040] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Accepted: 06/10/2014] [Indexed: 11/29/2022] Open
Abstract
Background A strategy to combat infectious diseases, including neglected tropical diseases (NTDs), will depend on the development of reliable epidemiological surveillance methods. To establish a simple and practical seroprevalence detection system, we developed a microsphere-based multiplex immunoassay system and evaluated utility using samples obtained in Kenya. Methods We developed a microsphere-based immuno-assay system to simultaneously measure the individual levels of plasma antibody (IgG) against 8 antigens derived from 6 pathogens: Entamoeba histolytica (C-IgL), Leishmania donovani (KRP42), Toxoplasma gondii (SAG1), Wuchereria bancrofti (SXP1), HIV (gag, gp120 and gp41), and Vibrio cholerae (cholera toxin). The assay system was validated using appropriate control samples. The assay system was applied for 3411 blood samples collected from the general population randomly selected from two health and demographic surveillance system (HDSS) cohorts in the coastal and western regions of Kenya. The immunoassay values distribution for each antigen was mathematically defined by a finite mixture model, and cut-off values were optimized. Findings Sensitivities and specificities for each antigen ranged between 71 and 100%. Seroprevalences for each pathogen from the Kwale and Mbita HDSS sites (respectively) were as follows: HIV, 3.0% and 20.1%; L. donovani, 12.6% and 17.3%; E. histolytica, 12.8% and 16.6%; and T. gondii, 30.9% and 28.2%. Seroprevalences of W. bancrofti and V. cholerae showed relatively high figures, especially among children. The results might be affected by immunological cross reactions between W. bancrofti-SXP1 and other parasitic infections; and cholera toxin and the enterotoxigenic E. coli (ETEC), respectively. Interpretation A microsphere-based multi-serological assay system can provide an opportunity to comprehensively grasp epidemiological features for NTDs. By adding pathogens and antigens of interest, optimized made-to-order high-quality programs can be established to utilize limited resources to effectively control NTDs in Africa. Monitoring the distribution of neglected tropical diseases (NTDs) is a key to controlling their spread in Africa. Currently, such surveillance is conducted independently for each NTD. To tackle this problem, we developed a microsphere-based system to permit simultaneous measurement of IgG antibody levels for antigens from six infectious diseases: Entamoeba histolytica, Leishmania donovani, Toxoplasma gondii, Wuchereria bancrofti, HIV, and Vibrio cholerae. Using this system, we conducted a serological survey using two health and demographic surveillance system (HDSS) areas in coastal and western Kenya. We randomly selected 4,600 individuals according to sex and age group, of whom 3411 agreed to participate in the study. Mathematical analyses of the distributions of the participants' reactivity to each antigen and the reactivity of the sero-positive and -negative controls indicated that this system could be used to monitor infections, especially, those associated with HIV, filariasis, toxoplasmosis, leishmaniasis, and amebiasis. For the practical development and eventual implementation of actual programs in Africa, pathogens and antigens of interest can be added to optimize made-to-order monitoring programs.
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Affiliation(s)
- Yoshito Fujii
- Department of Eco-Epidemiology, Institute of Tropical Medicine, Nagasaki University (NUITM), Nagasaki, Japan
| | - Satoshi Kaneko
- Department of Eco-Epidemiology, Institute of Tropical Medicine, Nagasaki University (NUITM), Nagasaki, Japan
- Graduate School of International Health Development, Nagasaki University, Nagasaki, Japan
- Nagasaki University Institute of Tropical Medicine (NUITM)- Kenya Medical Research Institute (KEMRI), Nairobi, Kenya
- * E-mail:
| | - Samson Muuo Nzou
- Nagasaki University Institute of Tropical Medicine (NUITM)- Kenya Medical Research Institute (KEMRI), Nairobi, Kenya
- Centre for Infectious and Parasitic Diseases Control Research, Kenya Medical Research Institute (KEMRI), Busia, Kenya
| | - Matilu Mwau
- Centre for Infectious and Parasitic Diseases Control Research, Kenya Medical Research Institute (KEMRI), Busia, Kenya
| | - Sammy M. Njenga
- Eastern & Southern Africa Centre of International Parasite Control (ESACIPAC), Kenya Medical Research Institute (KEMRI), Nairobi, Kenya
| | - Chihiro Tanigawa
- Department of Eco-Epidemiology, Institute of Tropical Medicine, Nagasaki University (NUITM), Nagasaki, Japan
| | - James Kimotho
- Production Department, Kenya Medical Research Institute (KEMRI), Nairobi, Kenya
| | - Anne Wanjiru Mwangi
- Production Department, Kenya Medical Research Institute (KEMRI), Nairobi, Kenya
| | - Ibrahim Kiche
- Nagasaki University Institute of Tropical Medicine (NUITM)- Kenya Medical Research Institute (KEMRI), Nairobi, Kenya
- Thomas Odhiambo Campus, Mbita, International Center of Insect Physiology and Ecology (ICIPE), Mbita, Kenya
| | - Sohkichi Matsumoto
- Department of Bacteriology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Mamiko Niki
- Department of Bacteriology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Mayuko Osada-Oka
- Department of Bacteriology, Osaka City University Graduate School of Medicine, Osaka, Japan
- Food Hygiene and Environmental Health Division of Applied Life Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan
| | - Yoshio Ichinose
- Nagasaki University Institute of Tropical Medicine (NUITM)- Kenya Medical Research Institute (KEMRI), Nairobi, Kenya
- Kenya Research Station, Nagasaki University, Nagasaki, Japan
| | - Manabu Inoue
- Department of Bacteriology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Makoto Itoh
- Department of Infection and Immunology, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan
| | - Hiroshi Tachibana
- Department of Infectious Diseases, Tokai University School of Medicine, Kanagawa, Japan
| | - Kazunari Ishii
- Department of Microbiology and Immunology, Faculty of Medicine, Fukuoka University, Fukuoka, Japan
| | - Takafumi Tsuboi
- Division of Malaria Research, Proteo-Science Center, Ehime University, Ehime, Japan
| | - Lay Myint Yoshida
- Department of Paediatric Infectious Diseases, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
| | - Dinesh Mondal
- International Center for Diarrheal Disease Research (ICDDR, B), Dhaka, Bangladesh
| | - Rashidul Haque
- International Center for Diarrheal Disease Research (ICDDR, B), Dhaka, Bangladesh
| | - Shinjiro Hamano
- Nagasaki University Institute of Tropical Medicine (NUITM)- Kenya Medical Research Institute (KEMRI), Nairobi, Kenya
- Department of Parasitology, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
| | - Mwatasa Changoma
- Nagasaki University Institute of Tropical Medicine (NUITM)- Kenya Medical Research Institute (KEMRI), Nairobi, Kenya
| | - Tomonori Hoshi
- Department of Eco-Epidemiology, Institute of Tropical Medicine, Nagasaki University (NUITM), Nagasaki, Japan
| | - Ken-ichi Kamo
- Department of Liberal Arts and Sciences, Sapporo Medical University, Sapporo, Japan
| | - Mohamed Karama
- Graduate School of International Health Development, Nagasaki University, Nagasaki, Japan
- Centre of Public Health Research, Kenya Medical Research Institute (KEMRI), Nairobi, Kenya
| | - Masashi Miura
- Department of Eco-Epidemiology, Institute of Tropical Medicine, Nagasaki University (NUITM), Nagasaki, Japan
| | - Kenji Hirayama
- Department of Immunogenetics, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
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Sano S, Izumi Y, Yamaguchi T, Yamazaki T, Tanaka M, Shiota M, Osada-Oka M, Nakamura Y, Wei M, Wanibuchi H, Iwao H, Yoshiyama M. Lipid synthesis is promoted by hypoxic adipocyte-derived exosomes in 3T3-L1 cells. Biochem Biophys Res Commun 2014; 445:327-33. [PMID: 24513287 DOI: 10.1016/j.bbrc.2014.01.183] [Citation(s) in RCA: 98] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Accepted: 01/29/2014] [Indexed: 02/09/2023]
Abstract
Hypoxia occurs within adipose tissues as a result of adipocyte hypertrophy and is associated with adipocyte dysfunction in obesity. Here, we examined whether hypoxia affects the characteristics of adipocyte-derived exosomes. Exosomes are nanovesicles secreted from most cell types as an information carrier between donor and recipient cells, containing a variety of proteins as well as genetic materials. Cultured differentiated 3T3-L1 adipocytes were exposed to hypoxic conditions and the protein content of the exosomes produced from these cells was compared by quantitative proteomic analysis. A total of 231 proteins were identified in the adipocyte-derived exosomes. Some of these proteins showed altered expression levels under hypoxic conditions. These results were confirmed by immunoblot analysis. Especially, hypoxic adipocyte-released exosomes were enriched in enzymes related to de novo lipogenesis such as acetyl-CoA carboxylase, glucose-6-phosphate dehydrogenase, and fatty acid synthase (FASN). The total amount of proteins secreted from exosomes increased by 3-4-fold under hypoxic conditions. Moreover, hypoxia-derived exosomes promoted lipid accumulation in recipient 3T3-L1 adipocytes, compared with those produced under normoxic conditions. FASN levels were increased in undifferentiated 3T3-L1 cells treated with FASN-containing hypoxic adipocytes-derived exosomes. This is a study to characterize the proteomic profiles of adipocyte-derived exosomes. Exosomal proteins derived from hypoxic adipocytes may affect lipogenic activity in neighboring preadipocytes and adipocytes.
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Affiliation(s)
- Soichi Sano
- Department of Cardiovascular Medicine, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Yasukatsu Izumi
- Department of Cardiovascular Medicine, Osaka City University Graduate School of Medicine, Osaka, Japan; Department of Pharmacology, Osaka City University Graduate School of Medicine, Osaka, Japan.
| | - Takehiro Yamaguchi
- Department of Cardiovascular Medicine, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Takanori Yamazaki
- Department of Cardiovascular Medicine, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Masako Tanaka
- Department of Pharmacology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Masayuki Shiota
- Department of Pharmacology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Mayuko Osada-Oka
- Food Hygiene and Environmental Health, Kyoto Prefectural University, Graduate School of Life and Environmental Sciences, Kyoto, Japan
| | - Yasuhiro Nakamura
- Department of Cardiology, Izumi Municipal Hospital, Izumi-Osaka, Japan
| | - Min Wei
- Department of Pathology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Hideki Wanibuchi
- Department of Pathology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Hiroshi Iwao
- Department of Pharmacology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Minoru Yoshiyama
- Department of Cardiovascular Medicine, Osaka City University Graduate School of Medicine, Osaka, Japan
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27
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Yamazaki T, Nakamura Y, Shiota M, Osada-Oka M, Fujiki H, Hanatani A, Shimada K, Miura K, Yoshiyama M, Iwao H, Izumi Y. Tolvaptan attenuates left ventricular fibrosis after acute myocardial infarction in rats. J Pharmacol Sci 2013; 123:58-66. [PMID: 24005048 DOI: 10.1254/jphs.13086fp] [Citation(s) in RCA: 5] [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: 10/26/2022] Open
Abstract
Tolvaptan, a non-peptide V2-receptor antagonist, is a newly developed diuretic agent. Recently, we reported that tolvaptan has diuretic as well as anti-inflammatory and anti-fibrotic actions in chronic heart failure. In this study, we investigated whether tolvaptan has a cardioprotective effect in acute heart failure after myocardial infarction (MI). After MI induction, rats were randomized into 6 groups as follows: vehicle group, group treated with 15 mg∙kg⁻¹∙day⁻¹ furosemide, 2 groups treated with 3 or 10 mg∙kg⁻¹∙day⁻¹ tolvaptan, and 2 groups treated with 15 mg∙kg⁻¹∙day⁻¹ furosemide combined with 3 or 10 mg∙kg⁻¹∙day⁻¹ tolvaptan. Each agent was administered for 2 weeks, and blood pressure levels and infarct sizes were similar in all MI groups. Lower left ventricular end-systolic volumes and greater improvement of left ventricular ejection fraction were observed in the tolvaptan-treated groups compared with the vehicle group. In contrast, furosemide alone did not improve them. Sirius red staining revealed that tolvaptan significantly repressed MI-induced interstitial fibrosis in the left ventricle. MI-induced mRNA expressions related to cardiac load, inflammation, and fibrosis were significantly attenuated in the combination group. The combination treatment also repressed MI-induced mineralocorticoid receptor expression. Tolvaptan, or combination of furosemide and tolvaptan, may improve cardiac function in acute MI.
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Affiliation(s)
- Takanori Yamazaki
- Department of Cardiovascular Medicine, Osaka City University Medical School, Japan
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28
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Osada-Oka M, Tateishi Y, Hirayama Y, Ozeki Y, Niki M, Kitada S, Maekura R, Tsujimura K, Koide Y, Ohara N, Yamamoto T, Kobayashi K, Matsumoto S. Antigen 85A and mycobacterial DNA-binding protein 1 are targets of immunoglobulin G in individuals with past tuberculosis. Microbiol Immunol 2013; 57:30-7. [PMID: 23157580 DOI: 10.1111/j.1348-0421.2012.12005.x] [Citation(s) in RCA: 13] [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] [Received: 07/04/2012] [Revised: 10/19/2012] [Accepted: 11/02/2012] [Indexed: 12/01/2022]
Abstract
Development of accurate methods for predicting progression of tuberculosis (TB) from the latent state is recognized as vitally important in controlling TB, because a majority of cases develop from latent infections. Past TB that has never been treated has a higher risk of progressing than does latent Mycobacterium tuberculosis infection in patients who have previously received treatment. Antibody responses against 23 kinds of M. tuberculosis proteins in individuals with past TB who had not been medicated were evaluated. These individuals had significantly higher concentrations of antibodies against Antigen 85A and mycobacterial DNA-binding protein 1 (MDP1) than did those with active TB and uninfected controls. In addition, immunohistochemistry revealed colocalization of tubercle bacilli, antigen 85 and MDP1 inside tuberculous granuloma lesions in an asymptomatic subject, showing that M. tuberculosis in lesions expresses both antigen 85 and MDP1. Our study suggests the potential usefulness of measuring antibody responses to antigen 85A and MDP1 for assessing the risk of TB progression.
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Affiliation(s)
- Mayuko Osada-Oka
- Department of Bacteriology, Osaka City University Graduate School of Medicine, 1-4-3 Abeno-ku, Osaka 545-8585, Japan
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29
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Yamazaki T, Izumi Y, Nakamura Y, Yamashita N, Fujiki H, Osada-Oka M, Shiota M, Hanatani A, Shimada K, Iwao H, Yoshiyama M. Tolvaptan Improves Left Ventricular Dysfunction after Myocardial Infarction in Rats. Circ Heart Fail 2012; 5:794-802. [DOI: 10.1161/circheartfailure.112.968750] [Citation(s) in RCA: 30] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Background—
Arginine vasopressin, which promotes the reabsorption of renal water is increased in chronic heart failure. Here, we compared the effects of tolvaptan, a newly developed nonpeptide V
2
receptor antagonist, with those of furosemide, a loop diuretic, and a combination of these 2 agents in rats with left ventricular dysfunction after myocardial infarction (MI).
Methods and Results—
After 10 weeks of MI induction, the rats were separated them into the following 6 groups adjusted to the infarct size: a vehicle group, a group treated with 15 mg·kg
-1
·day
-1
of furosemide, 2 groups treated with 3 or 10 mg·kg
−1
·day
−1
of tolvaptan; and 2 groups treated with 15 mg·kg
−1
·day
−1
of furosemide plus 3 or 10 mg·kg
−1
·day
−1
tolvaptan. Each treatment agent was administered for 4 weeks, and all groups had similar blood pressure levels and infarct size. The tolvaptan-treated groups were found to have lower levels of left ventricular end-diastolic and systolic cardiac volumes than the vehicle group did. Furthermore, the improvement in the ejection fraction in the tolvaptan-treated groups was significantly greater than those in the vehicle group. ED-1 immunostaining and Sirius red staining revealed that tolvaptan significantly repressed MI-induced macrophage infiltration and interstitial fibrosis in the left ventricle, respectively. Tolvaptan attenuated the MI-induced mRNA expressions of atrial and brain natriuretic peptides, monocyte chemotactic protein-1, transforming growth factor-β1, arginine vasopressin V
1a
receptor, and endothelin-1 in the marginal infarct region.
Conclusions—
Tolvaptan may improve cardiac dysfunction after MI, which is partially mediated by the suppression of V
1a
receptor, neurohumoral activation and inflammation.
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Affiliation(s)
- Takanori Yamazaki
- From the Department of Internal Medicine and Cardiology (T.Y., Y.N., A.H., K.S., M.Y.), and Department of Pharmacology (Y.I., N.Y., M.O., M.S., H.I.), Osaka City University Medical School, Osaka, Japan; and First Institute of New Drug Discovery, Otsuka Pharmaceutical Co. Ltd., Tokushima, Japan (H.F.)
| | - Yasukatsu Izumi
- From the Department of Internal Medicine and Cardiology (T.Y., Y.N., A.H., K.S., M.Y.), and Department of Pharmacology (Y.I., N.Y., M.O., M.S., H.I.), Osaka City University Medical School, Osaka, Japan; and First Institute of New Drug Discovery, Otsuka Pharmaceutical Co. Ltd., Tokushima, Japan (H.F.)
| | - Yasuhiro Nakamura
- From the Department of Internal Medicine and Cardiology (T.Y., Y.N., A.H., K.S., M.Y.), and Department of Pharmacology (Y.I., N.Y., M.O., M.S., H.I.), Osaka City University Medical School, Osaka, Japan; and First Institute of New Drug Discovery, Otsuka Pharmaceutical Co. Ltd., Tokushima, Japan (H.F.)
| | - Naoto Yamashita
- From the Department of Internal Medicine and Cardiology (T.Y., Y.N., A.H., K.S., M.Y.), and Department of Pharmacology (Y.I., N.Y., M.O., M.S., H.I.), Osaka City University Medical School, Osaka, Japan; and First Institute of New Drug Discovery, Otsuka Pharmaceutical Co. Ltd., Tokushima, Japan (H.F.)
| | - Hiroyuki Fujiki
- From the Department of Internal Medicine and Cardiology (T.Y., Y.N., A.H., K.S., M.Y.), and Department of Pharmacology (Y.I., N.Y., M.O., M.S., H.I.), Osaka City University Medical School, Osaka, Japan; and First Institute of New Drug Discovery, Otsuka Pharmaceutical Co. Ltd., Tokushima, Japan (H.F.)
| | - Mayuko Osada-Oka
- From the Department of Internal Medicine and Cardiology (T.Y., Y.N., A.H., K.S., M.Y.), and Department of Pharmacology (Y.I., N.Y., M.O., M.S., H.I.), Osaka City University Medical School, Osaka, Japan; and First Institute of New Drug Discovery, Otsuka Pharmaceutical Co. Ltd., Tokushima, Japan (H.F.)
| | - Masayuki Shiota
- From the Department of Internal Medicine and Cardiology (T.Y., Y.N., A.H., K.S., M.Y.), and Department of Pharmacology (Y.I., N.Y., M.O., M.S., H.I.), Osaka City University Medical School, Osaka, Japan; and First Institute of New Drug Discovery, Otsuka Pharmaceutical Co. Ltd., Tokushima, Japan (H.F.)
| | - Akihisa Hanatani
- From the Department of Internal Medicine and Cardiology (T.Y., Y.N., A.H., K.S., M.Y.), and Department of Pharmacology (Y.I., N.Y., M.O., M.S., H.I.), Osaka City University Medical School, Osaka, Japan; and First Institute of New Drug Discovery, Otsuka Pharmaceutical Co. Ltd., Tokushima, Japan (H.F.)
| | - Kenei Shimada
- From the Department of Internal Medicine and Cardiology (T.Y., Y.N., A.H., K.S., M.Y.), and Department of Pharmacology (Y.I., N.Y., M.O., M.S., H.I.), Osaka City University Medical School, Osaka, Japan; and First Institute of New Drug Discovery, Otsuka Pharmaceutical Co. Ltd., Tokushima, Japan (H.F.)
| | - Hiroshi Iwao
- From the Department of Internal Medicine and Cardiology (T.Y., Y.N., A.H., K.S., M.Y.), and Department of Pharmacology (Y.I., N.Y., M.O., M.S., H.I.), Osaka City University Medical School, Osaka, Japan; and First Institute of New Drug Discovery, Otsuka Pharmaceutical Co. Ltd., Tokushima, Japan (H.F.)
| | - Minoru Yoshiyama
- From the Department of Internal Medicine and Cardiology (T.Y., Y.N., A.H., K.S., M.Y.), and Department of Pharmacology (Y.I., N.Y., M.O., M.S., H.I.), Osaka City University Medical School, Osaka, Japan; and First Institute of New Drug Discovery, Otsuka Pharmaceutical Co. Ltd., Tokushima, Japan (H.F.)
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30
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Samukawa K, Izumi Y, Shiota M, Nakao T, Osada-Oka M, Miura K, Iwao H. Red ginseng inhibits scratching behavior associated with atopic dermatitis in experimental animal models. J Pharmacol Sci 2012; 118:391-400. [PMID: 22382656 DOI: 10.1254/jphs.11182fp] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Abstract
Pruritus is a severe symptom that is difficult to treat in atopic dermatitis patients. Red ginseng (RG), a natural medicine, has various biological activities such as anti-inflammatory effects. In this study, we examined the efficacy of RG extract (RGE) and its mechanism on experimental atopic dermatitis in mice. The effects of RGE on vascular permeability and itching were first evaluated. Histamine-induced permeability and itching were significantly inhibited by embrocation with RGE as well as diphenhydramine, an antihistamine drug. Next, we assessed the therapeutic effect of topical RGE in a mouse model of atopic dermatitis. Dermatitis was induced by repeated application of 2,4-dinitrofluorobenzene (DNFB) acetone solution to the mouse ear. The effects of tacrolimus (a calcineurin blocker), dexamethasone (a corticosteroid), and RGE on dermatitis and associated scratching behavior were compared. Repeated DNFB application caused frequent scratching behaviors and ear swelling. Topical treatment with tacrolimus, dexamethasone, and RGE for 8 days before the final challenge with DNFB significantly inhibited ear swelling. Tacrolimus and RGE significantly inhibited scratching behavior, whereas dexamethasone failed to do so. DNFB-induced nerve growth factor expression and nerve fiber extension were significantly attenuated by tacrolimus and RGE, but not by dexamethasone. RGE may have the potential for treatment of atopic dermatitis.
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Affiliation(s)
- Keiichi Samukawa
- Department of Pharmacology, Osaka City University Medical School, Osaka 545-8585, Japan
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31
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Osada-Oka M, Kita H, Yagi S, Sato T, Izumi Y, Iwao H. Angiotensin AT1 receptor blockers suppress oxidized low-density lipoprotein-derived formation of foam cells. Eur J Pharmacol 2012; 679:9-15. [DOI: 10.1016/j.ejphar.2011.12.044] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2011] [Revised: 12/19/2011] [Accepted: 12/28/2011] [Indexed: 10/14/2022]
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Ikejiri A, Nagai S, Goda N, Kurebayashi Y, Osada-Oka M, Takubo K, Suda T, Koyasu S. Dynamic regulation of Th17 differentiation by oxygen concentrations. Int Immunol 2011; 24:137-46. [PMID: 22207131 DOI: 10.1093/intimm/dxr111] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Naive CD4(+) T cells are activated by antigen-presenting cells (APCs) and differentiate into distinct types of helper T (T(h)) cells in the lymph node or spleen. Oxygen (O(2)) tension is generally low in these secondary lymphoid tissues compared with the bloodstream or atmosphere. However, the effect of changes in O(2) concentration on the differentiation of T(h) cells remains unclear. Here, we established a novel model of T(h)-cell differentiation, which mimics physiological O(2) conditions. We primed naive CD4(+) T cells under 5% O(2), which has been observed in the lymph node or spleen and reoxygenated under normoxia that mimicked the O(2) concentration in blood. In this model, the differentiation of T(h)17 cells, but not T(h)1 or iTreg cells, was enhanced. Under the condition of 5% O(2), mammalian target of rapamycin complex 1 (mTORC1) was activated and led to the stabilization of hypoxia-inducible factor 1α (HIF-1α) in T(h)17 cells. The activation of mTORC1 and the acceleration of T(h)17-cell differentiation, which occurred when cells were primed under 5% O(2), were not observed in the absence of HIF-1α but were accelerated in the absence of von Hippel-Lindau tumor suppressor protein (vHL), a factor critical for HIF-1α degradation. Thus, a positive feedback loop between HIF-1α and mTORC1 induced by hypoxia followed by reoxygenation accelerates T(h)17-cell differentiation.
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Affiliation(s)
- Ai Ikejiri
- Department of Microbiology and Immunology, Keio University School of Medicine, Shinjuku-ku, Tokyo 160-8582, Japan
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33
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Osada-Oka M, Hashiba Y, Akiba S, Imaoka S, Sato T. Glucose is necessary for stabilization of hypoxia-inducible factor-1α under hypoxia: Contribution of the pentose phosphate pathway to this stabilization. FEBS Lett 2010; 584:3073-9. [DOI: 10.1016/j.febslet.2010.05.046] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2010] [Revised: 04/10/2010] [Accepted: 05/22/2010] [Indexed: 01/22/2023]
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34
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Ozeki Y, Sugawara I, Udagawa T, Aoki T, Osada-Oka M, Tateishi Y, Hisaeda H, Nishiuchi Y, Harada N, Kobayashi K, Matsumoto S. Transient role of CD4+CD25+ regulatory T cells in mycobacterial infection in mice. Int Immunol 2010; 22:179-89. [PMID: 20139174 DOI: 10.1093/intimm/dxp126] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
CD4(+)CD25(+) regulatory T (Treg) cells cause immune suppression by inhibiting T cell effector functions and play pivotal roles not only in self-tolerance but also in immune response to parasitic microbial pathogens. Mycobacteria are major parasitic bacterial pathogens, but the role of CD4(+)CD25(+) Treg cells in mycobacterial infection is not yet defined. In this study we found that, at the early stage of infection, depletion of CD25(+) cells reduced both bacterial load and granuloma formation in mice infected with Mycobacterium tuberculosis strains, such as M. tuberculosis Erdman or M. tuberculosis Kurono. However, at a later stage of infection, bacterial burden and histopathology were similar regardless of depletion of CD25(+) cells. Severe combined immunodeficient (SCID) mice reconstituted with CD4(+)CD25(-) T cells alone or a combination of CD4(+)CD25(+) and CD4(+)CD25(-) T cells showed similar bacterial loads and survival kinetics after infection with M. tuberculosis Erdman. Consistent with in vivo data, in vitro studies revealed that mycobacterial antigens, purified protein derivative of tuberculin (PPD), failed to induce the suppressive function of CD4(+)CD25(+) Treg cells to CD4(+)CD25(-) effector T cells, as demonstrated by the lack of response of CD4(+)CD25(+) T cells to PPD, in mice chronically infected with Mycobacterium bovis bacillus Calmette-Guérin and M. tuberculosis. Our data show that CD4(+)CD25(+) Treg cells have a transient effect at the early stage of mycobacterial infection but, contrary to the expectation, have little impact on the overall course of infection.
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Affiliation(s)
- Yuriko Ozeki
- Department of Bacteriology, Osaka City University Graduate School of Medicine, 1-4-3 Abeno-ku, Osaka 545-8585, Japan
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35
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Shinkawa H, Takemura S, Minamiyama Y, Kodai S, Tsukioka T, Osada-Oka M, Kubo S, Okada S, Suehiro S. S-allylcysteine is effective as a chemopreventive agent against porcine serum-induced hepatic fibrosis in rats. Osaka City Med J 2009; 55:61-69. [PMID: 20088405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
BACKGROUND Hepatic fibrosis is a chronic progressive disorder with a poor prognosis for which no definitive treatment exists. S-allylcysteine (SAC), an ingredient of aged garlic extract, is known to have antioxidant and hepatoprotective effects. The aim of this study was to investigate the antifibrotic effects of SAC in the liver. METHODS Hepatic fibrosis was induced in male Wistar rats by porcine serum (PS) intraperitoneal injection. SAC (0.15% of basal diet) or N-acetylcysteine (NAC, 0.45% of basal diet) was orally administered for 12 weeks. Liver damage was assessed by the levels of plasma alanine aminotransferase (ALT), hepatic lipid peroxides (LPO), and hepatic total thiols 12 weeks after first PS injection. Area of fibrosis was examined by Azan-Mallory staining. Hydroxyproline content of liver were assessed as an index of collagen content. Liver was examined for expression of alpha-smooth muscle actin (alpha-SMA) as a marker of hepatic stellate cell (HSC) activation. RESULTS There were no significant differences in levels of plasma ALT, hepatic LPO, or hepatic total thiols among the groups. PS significantly increased area of fibrosis and hydroxyproline content in the liver. SAC and NAC each markedly attenuated the development ofhepatic fibrosis. SAC and NAC markedly suppressed the PS-induced increase in alpha-SMA expressions. CONCLUSIONS Oral administration of SAC reduced PS-induced hepatic fibrosis in rats via inhibition of HSC activation. SAC could provide a new therapeutic strategy for hepatic fibrosis.
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Affiliation(s)
- Hiroji Shinkawa
- Department of Hepato-Biliary-Pancreatic Surgery, Osaka City University, Graduate School of Medicine, 1-4-3 Asahimachi, Abeno-ku, Osaka 545-8585, Japan.
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36
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Suzuki S, Oguro A, Osada-Oka M, Funae Y, Imaoka S. Epoxyeicosatrienoic acids and/or their metabolites promote hypoxic response of cells. J Pharmacol Sci 2008; 108:79-88. [PMID: 18776712 DOI: 10.1254/jphs.08122fp] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
Epoxyeicosatrienoic acids (EETs), including 5,6-EET, 8,9-EET, 11,12-EET, and 14,15-EET, are produced by cytochrome P450 (P450) such as CYP2C8 and 2C9; and they are hydrolyzed to dihydroxyeicosatrienoic acids (DHETs) by epoxide hydrolase. Particular interest in the epoxygenase reaction has developed because of the potent biological activities (modulation of vascular tone and anti-inflammatory activity, etc.) attributed to EETs. We focused on a new biological function of EETs and DHETs, which induce vascular endothelial growth factor (VEGF) and erythropoietin (EPO) under hypoxia. Human hepatoma cells, Hep3B, and human umbilical artery endothelial cells (HUAEC) were used in this study. An inhibitor of phospholipase A(2), methyl arachidonyl fluorophosphonate (MAFP), and inhibitors of P450s inhibited the VEGF and EPO induction of HUAEC and Hep3B, respectively, under hypoxia. Overexpression of CYP2C8 in Hep3B induced EPO and VEGF under hypoxia. Sulfaphenazole, an inhibitor of CYP2C8/2C9 suppressed luciferase promoter activity with the hypoxia response element (HRE) of VEGF in HUAEC. Exogenous 11,12-EET and 14,15-DHET induced reporter activity in HUAEC and Hep3B cells concomitant with increased levels of hypoxia-inducible factor-1alpha (HIF-1alpha), which is a key factor in the hypoxia response, but 11,12-DHET and 14,15-EET did not. These results suggested that EETs and DHETs play an important role in the hypoxia response of cells.
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Affiliation(s)
- Sachiko Suzuki
- Nanobiotechnology Research Center and Department of Bioscience, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Japan
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Osada-Oka M, Ikeda T, Akiba S, Sato T. Hypoxia stimulates the autocrine regulation of migration of vascular smooth muscle cells via HIF-1α-dependent expression of thrombospondin-1. J Cell Biochem 2008; 104:1918-26. [DOI: 10.1002/jcb.21759] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Osada-Oka M, Ikeda T, Imaoka S, Akiba S, Sato T. VEGF-enhanced proliferation under hypoxia by an autocrine mechanism in human vascular smooth muscle cells. J Atheroscler Thromb 2008; 15:26-33. [PMID: 18270456 DOI: 10.5551/jat.e533] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
AIM Atherosclerotic lesions are reported to be hypoxic. Since hypoxia is known to induce the production of growth factors, such as vascular endothelial growth factor (VEGF), we examined the implication of hypoxia-induced VEGF in the proliferation of human coronary artery smooth muscle cells (CASMCs). METHODS Cells were cultured under hypoxic conditions (1% O(2), 5% CO(2)) and several responses were measured. RESULTS Under hypoxic conditions, the mRNA and protein levels of VEGF, and the mRNA level of VEGF receptor-1 (VEGFR-1) increased with an increase in hypoxia-inducible factor-1alpha (HIF-1alpha) protein, and considerable amounts of VEGF were secreted. Hypoxia enhanced the incorporation of [(3)H]-thymidine by CASMCs, which was completely inhibited by a neutralizing antibody against VEGF. A neutralizing antibody against NADPH-cytochrome P-450 reductase (NPR), which contributes to the stabilization of HIF-1alpha, also attenuated hypoxia-stimulated proliferation. In NPR-knockdown cells, the expression of VEGF, proliferation, and transcriptional activity were attenuated, whereas in NPR-overexpressing cells, they were enhanced. CONCLUSION Hypoxia-induced proliferation of CASMCs is mediated through the expressions of VEGF and VEGFR-1 in an autocrine mechanism. Their expressions are dependent on the stabilization of HIF-1alpha, which is regulated by NPR. We suggest that hypoxia and hypoxia-induced VEGF expression are involved in the pathogenesis of progressive atherosclerosis.
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Affiliation(s)
- Mayuko Osada-Oka
- Department of Pathological Biochemistry, Kyoto Pharmaceutical University, Kyoto, Japan.
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Osada-Oka M, Takahashi M, Akiba S, Sato T. Involvement of Ca2+-independent phospholipase A2 in the translocation of hypoxia-inducible factor-1α to the nucleus under hypoxic conditions. Eur J Pharmacol 2006; 549:58-62. [PMID: 16979159 DOI: 10.1016/j.ejphar.2006.08.026] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2006] [Revised: 08/12/2006] [Accepted: 08/18/2006] [Indexed: 01/01/2023]
Abstract
We investigated the role of Ca2+-independent phospholipase A2 (iPLA2) as well as cytosolic phospholipase A2 (cPLA2) in hypoxia-inducible factor-1 (HIF-1)-dependent gene expression. An inhibitor of both iPLA2 and cPLA2, methyl arachidonyl fluorophosphonate (MAFP), prevented hypoxia-induced erythropoietin mRNA expression without affecting HIF-1alpha accumulation in Hep3B cells. The DNA-binding of HIF-1alpha was suppressed by MAFP as confirmed by luciferase reporter gene assays with the hypoxia response element. Translocation of HIF-1alpha to the nucleus assessed by its presence in the nuclear extracts of cells exposed to hypoxia, was diminished by MAFP. However, hypoxia-dependent gene expression was not affected in mesangial cells obtained from cPLA2alpha null mice. Furthermore, a specific iPLA2 inhibitor, bromoenol lactone, suppressed erythropoietin mRNA expression and HIF-1alpha translocation to the nucleus under hypoxic conditions. Thus, iPLA2, but not cPLA2alpha, may play an important role in regulating the transport of HIF-1alpha to the nucleus.
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MESH Headings
- Active Transport, Cell Nucleus/drug effects
- Animals
- Arachidonic Acids/pharmacology
- Calcium/metabolism
- Cell Hypoxia/physiology
- Cell Line, Tumor
- Cell Nucleus/drug effects
- Cell Nucleus/metabolism
- Cells, Cultured
- Cytosol/enzymology
- Dose-Response Relationship, Drug
- Erythropoietin/genetics
- Erythropoietin/metabolism
- Gene Expression/genetics
- Humans
- Hypoxia-Inducible Factor 1, alpha Subunit/genetics
- Hypoxia-Inducible Factor 1, alpha Subunit/metabolism
- Immunoblotting
- Luciferases/genetics
- Luciferases/metabolism
- Mesangial Cells/cytology
- Mesangial Cells/metabolism
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Organophosphonates/pharmacology
- Phospholipases A/genetics
- Phospholipases A/metabolism
- Phospholipases A2
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Recombinant Fusion Proteins/genetics
- Recombinant Fusion Proteins/metabolism
- Reverse Transcriptase Polymerase Chain Reaction
- Vascular Endothelial Growth Factor A/genetics
- Vascular Endothelial Growth Factor A/metabolism
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Affiliation(s)
- Mayuko Osada-Oka
- Department of Pathological Biochemistry, Kyoto Pharmaceutical University, Kyoto, Japan
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Imaoka S, Obata N, Hiroi T, Osada-Oka M, Hara R, Nishiguchi S, Funae Y. A new epitope of CYP2D6 recognized by liver kidney microsomal autoantibody from japanese patients with autoimmune hepatitis. Biol Pharm Bull 2006; 28:2240-3. [PMID: 16327157 DOI: 10.1248/bpb.28.2240] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Liver-kidney microsomal antibodies type 1 (LKM-1) are a diagnostic marker for autoimmune hepatitis type II (AIH-II). However, LKM autoantibodies are also detected in a small percentage of patients with chronic hepatitis C. The autoantigen to anti-LKM-1 has been identified to be CYP2D6. To identify the specific antigenic site of CYP2D6 for LKM-1 serum, we established an ELISA with peptides spanning the entire sequence of CYP2D6. Human CYP2D6 containing histidine tag was expressed in Escherichia coli. Purified CYP2D6 was digested by lysyl endopeptidase. The linker including the histidine tag has a lysine residue in its C-terminal and can be removed by digestion. Digested peptides were separated by reversed-phase HPLC and coated on ELISA plates chemically with glutaraldehyde. The immunoreactivity of two LKM-1-positive sera (HCV-negative) and five HCV-positive sera from Japanese patients was investigated with the plates. These sera recognized peptides 1-146, 181-214, 246-281, 284-391, and 412-429. The peptide 1-146 was recognized by LKM-1-positive sera but not HCV-positive sera and is a new epitope found in this study. Seven short peptides spanning peptide 1-146 were synthesized and ELISAs were conducted with these peptides. However, two sera recognized none of these peptides, suggesting that two LKM-1-positive sera recognize the conformational immunogenic site of peptide 1-146.
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Affiliation(s)
- Susumu Imaoka
- Nanobiotechnology Research Center and Department of Bioscience, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda 669-1337, Japan.
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