1
|
Okumura K, Mikami B, Oiki S, Ogura K, Hashimoto W. Expression, purification and preliminary crystallographic analysis of bacterial transmembrane protein EfeU for iron import. Protein Expr Purif 2024; 219:106487. [PMID: 38657915 DOI: 10.1016/j.pep.2024.106487] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2024] [Revised: 04/10/2024] [Accepted: 04/20/2024] [Indexed: 04/26/2024]
Abstract
The bacterial Efe system functions as an importer of free Fe2+ into cells independently of iron-chelating compounds such as siderophores and consisted of iron-binding protein EfeO, peroxidase EfeB, and transmembrane permease EfeU. While we and other researchers reported crystal structures of EfeO and EfeB, that of EfeU remains undetermined. In this study, we constructed expression system of EfeU derived from Escherichia coli, selected E. coli Rosetta-gami 2 (DE3) as an expression host, and succeeded in purification of the proteins which were indicated to form an oligomer by blue native PAGE. We obtained preliminary data of the X-ray crystallography, suggesting that expression and purification methods we established in this study enable structural analysis of the bacterial Efe system.
Collapse
Affiliation(s)
- Kenji Okumura
- Laboratory of Basic and Applied Molecular Biotechnology, Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Japan
| | - Bunzo Mikami
- Laboratory of Metabolic Sciences of Forest Plants and Microorganisms, Research Institute for Sustainable Humanosphere, Kyoto University, Japan
| | - Sayoko Oiki
- Laboratory of Basic and Applied Molecular Biotechnology, Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Japan
| | - Kohei Ogura
- Laboratory of Basic and Applied Molecular Biotechnology, Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Japan
| | - Wataru Hashimoto
- Laboratory of Basic and Applied Molecular Biotechnology, Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Japan.
| |
Collapse
|
2
|
Miyajima Y, Karashima S, Mizoguchi R, Kawakami M, Ogura K, Ogai K, Koshida A, Ikagawa Y, Ami Y, Zhu Q, Tsujiguchi H, Hara A, Kurihara S, Arakawa H, Nakamura H, Tamai I, Nambo H, Okamoto S. Prediction and causal inference of hyperuricemia using gut microbiota. Sci Rep 2024; 14:9901. [PMID: 38688923 PMCID: PMC11061287 DOI: 10.1038/s41598-024-60427-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Accepted: 04/23/2024] [Indexed: 05/02/2024] Open
Abstract
Hyperuricemia (HUA) is a symptom of high blood uric acid (UA) levels, which causes disorders such as gout and renal urinary calculus. Prolonged HUA is often associated with hypertension, atherosclerosis, diabetes mellitus, and chronic kidney disease. Studies have shown that gut microbiota (GM) affect these chronic diseases. This study aimed to determine the relationship between HUA and GM. The microbiome of 224 men and 254 women aged 40 years was analyzed through next-generation sequencing and machine learning. We obtained GM data through 16S rRNA-based sequencing of the fecal samples, finding that alpha-diversity by Shannon index was significantly low in the HUA group. Linear discriminant effect size analysis detected a high abundance of the genera Collinsella and Faecalibacterium in the HUA and non-HUA groups. Based on light gradient boosting machine learning, we propose that HUA can be predicted with high AUC using four clinical characteristics and the relative abundance of nine bacterial genera, including Collinsella and Dorea. In addition, analysis of causal relationships using a direct linear non-Gaussian acyclic model indicated a positive effect of the relative abundance of the genus Collinsella on blood UA levels. Our results suggest abundant Collinsella in the gut can increase blood UA levels.
Collapse
Affiliation(s)
- Yuna Miyajima
- Department of Clinical Laboratory Science, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Shigehiro Karashima
- Institute of Liberal Arts and Science, Kanazawa University, Kakuma, Kanazawa, Ishikawa, 920-1192, Japan.
| | - Ren Mizoguchi
- Department of Health Promotion and Medicine of the Future, Kanazawa University, Kanazawa, Japan
| | - Masaki Kawakami
- School of Electrical Information Communication Engineering, College of Science and Engineering, Kanazawa University, Kanazawa, Japan
| | - Kohei Ogura
- Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Japan
| | - Kazuhiro Ogai
- Department of Bio-Engineering Nursing, Graduate School of Nursing, Ishikawa Prefectural Nursing University, Kahoku, Ishikawa, Japan
| | - Aoi Koshida
- Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Japan
| | - Yasuo Ikagawa
- Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Japan
| | - Yuta Ami
- Faculty of Biology-Oriented Science and Technology, Kindai University, Kinokawa, Wakayama, Japan
| | - Qiunan Zhu
- Faculty of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Hiromasa Tsujiguchi
- Department of Hygiene and Public Health, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Akinori Hara
- Department of Hygiene and Public Health, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Shin Kurihara
- Faculty of Biology-Oriented Science and Technology, Kindai University, Kinokawa, Wakayama, Japan
| | - Hiroshi Arakawa
- Faculty of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Hiroyuki Nakamura
- Department of Hygiene and Public Health, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Ikumi Tamai
- Faculty of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Hidetaka Nambo
- School Introduction School of Entrepreneurial and Innovation Studies, College of Transdisciplinary Sciences for Innovation, Kanazawa University, Kanazawa, Japan
| | - Shigefumi Okamoto
- Laboratory of Medical Microbiology and Microbiome, Department of Clinical Laboratory and Biomedical Sciences, Division of Health Sciences, Osaka University Graduate School of Medicine, 1-7 Yamadaoka, Suita, Osaka, 565-0871, Japan.
| |
Collapse
|
3
|
Koshida A, Karashima S, Ogura K, Miyajima Y, Ogai K, Mizoguchi R, Ikagawa Y, Hara S, Mizushima I, Fujii H, Kawano M, Tsujiguchi H, Hara A, Nakamura H, Okamoto S. Impact of gut microbiome on serum IgG4 levels in the general population: Shika-machi super preventive health examination results. Front Cell Infect Microbiol 2023; 13:1272398. [PMID: 37908763 PMCID: PMC10613983 DOI: 10.3389/fcimb.2023.1272398] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 09/29/2023] [Indexed: 11/02/2023] Open
Abstract
Introduction Immunoglobulin G4 (IgG4) is a member of the human immunoglobulin G (IgG) subclass, a protein involved in immunity to pathogens and the body's resistance system. IgG4-related diseases (IgG4-RD) are intractable diseases in which IgG4 levels in the blood are elevated, causing inflammation in organs such as the liver, pancreas, and salivary glands. IgG4-RD are known to be more prevalent in males than in females, but the etiology remains to be elucidated. This study was conducted to investigate the relationship between gut microbiota (GM) and serum IgG4 levels in the general population. Methods In this study, the relationship between IgG4 levels and GM evaluated in male and female groups of the general population using causal inference. The study included 191 men and 207 women aged 40 years or older from Shika-machi, Ishikawa. GM DNA was analyzed for the 16S rRNA gene sequence using next-generation sequencing. Participants were bifurcated into high and low IgG4 groups, depending on median serum IgG4 levels. Results ANCOVA, Tukey's HSD, linear discriminant analysis effect size, least absolute shrinkage and selection operator logistic regression model, and correlation analysis revealed that Anaerostipes, Lachnospiraceae, Megasphaera, and [Eubacterium] hallii group were associated with IgG4 levels in women, while Megasphaera, [Eubacterium] hallii group, Faecalibacterium, Ruminococcus.1, and Romboutsia were associated with IgG4 levels in men. Linear non-Gaussian acyclic model indicated three genera, Megasphaera, [Eubacterium] hallii group, and Anaerostipes, and showed a presumed causal association with IgG4 levels in women. Discussion This differential impact of the GM on IgG4 levels based on sex is a novel and intriguing finding.
Collapse
Affiliation(s)
- Aoi Koshida
- Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Japan
| | - Shigehiro Karashima
- Institute of Liberal Arts and Science, Kanazawa University, Kanazawa, Japan
- Department of Health Promotion and Medicine of the Future, Kanazawa University, Kanazawa, Japan
| | - Kohei Ogura
- Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Japan
| | - Yuna Miyajima
- Department of Clinical Laboratory Science, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Kazuhiro Ogai
- Department of Bio-engineering Nursing, Graduate School of Nursing, Ishikawa Prefectural Nursing University, Kahoku, Japan
| | - Ren Mizoguchi
- Department of Health Promotion and Medicine of the Future, Kanazawa University, Kanazawa, Japan
| | - Yasuo Ikagawa
- Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Japan
| | - Satoshi Hara
- Department of Rheumatology, Kanazawa University Hospital, Kanazawa, Japan
| | - Ichiro Mizushima
- Department of Rheumatology, Kanazawa University Hospital, Kanazawa, Japan
| | - Hiroshi Fujii
- Department of Rheumatology, Kanazawa University Hospital, Kanazawa, Japan
| | - Mitsuhiro Kawano
- Department of Rheumatology, Kanazawa University Hospital, Kanazawa, Japan
| | - Hiromasa Tsujiguchi
- Department of Hygiene and Public Health, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Akinori Hara
- Department of Hygiene and Public Health, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Hiroyuki Nakamura
- Department of Hygiene and Public Health, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Shigefumi Okamoto
- Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Japan
- Department of Clinical Laboratory Science, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| |
Collapse
|
4
|
Furugaito M, Arai Y, Uzawa Y, Kamisako T, Ogura K, Okamoto S, Kikuchi K. Antimicrobial Susceptibility to 27 Drugs and the Molecular Mechanisms of Macrolide, Tetracycline, and Quinolone Resistance in Gemella sp. Antibiotics (Basel) 2023; 12:1538. [PMID: 37887239 PMCID: PMC10604004 DOI: 10.3390/antibiotics12101538] [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: 09/20/2023] [Revised: 10/09/2023] [Accepted: 10/09/2023] [Indexed: 10/28/2023] Open
Abstract
Gemella is a catalase-negative, facultative anaerobic, Gram-positive coccus that is commensal in humans but can become opportunistic and cause severe infectious diseases, such as infective endocarditis. Few studies have tested the antimicrobial susceptibility of Gemella. We tested its antimicrobial susceptibility to 27 drugs and defined the resistant genes using PCR in 58 Gemella strains, including 52 clinical isolates and six type strains. The type strains and clinical isolates included 22 G. morbillorum, 18 G. haemolysans (GH) group (genetically indistinguishable from G. haemolysans and G. parahaemolysans), 13 G. taiwanensis, three G. sanguinis, and two G. bergeri. No strain was resistant to beta-lactams and vancomycin. In total, 6/22 (27.3%) G. morbillorum strains were erythromycin- and clindamycin-resistant ermB-positive, whereas 4/18 (22.2%) in the GH group, 7/13 (53.8%) G. taiwanensis, and 1/3 (33.3%) of the G. sanguinis strains were erythromycin-non-susceptible mefE- or mefA-positive and clindamycin-susceptible. The MIC90 of minocycline and the ratios of tetM-positive strains varied across the different species-G. morbillorum: 2 µg/mL and 27.3% (6/22); GH group: 8 µg/mL and 27.8% (5/18); G. taiwanensis: 8 µg/mL and 46.2% (6/13), respectively. Levofloxacin resistance was significantly higher in G. taiwanensis (9/13 69.2%) than in G. morbillorum (2/22 9.1%). Levofloxacin resistance was associated with a substitution at serine 83 for leucine, phenylalanine, or tyrosine in GyrA. The mechanisms of resistance to erythromycin and clindamycin differed across Gemella species. In addition, the rate of susceptibility to levofloxacin differed across Gemella sp., and the quinolone resistance mechanism was caused by mutations in GyrA alone.
Collapse
Affiliation(s)
- Michiko Furugaito
- Department of Clinical Laboratory and Biomedical Sciences, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan; (M.F.); (S.O.)
- Department of Clinical Laboratory, Kindai University Hospital, Osakasayama, Osaka 589-8511, Japan
| | - Yuko Arai
- Department of Infectious Diseases, Tokyo Women’s Medical University, Shinjuku-ku, Tokyo 162-8666, Japan; (Y.A.); (Y.U.)
| | - Yutaka Uzawa
- Department of Infectious Diseases, Tokyo Women’s Medical University, Shinjuku-ku, Tokyo 162-8666, Japan; (Y.A.); (Y.U.)
| | - Toshinori Kamisako
- Department of Clinical Laboratory Medicine, Faculty of Medicine, Kindai University, Osakasayama, Osaka 589-8511, Japan;
| | - Kohei Ogura
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Uji, Kyoto 611-0011, Japan;
| | - Shigefumi Okamoto
- Department of Clinical Laboratory and Biomedical Sciences, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan; (M.F.); (S.O.)
| | - Ken Kikuchi
- Department of Infectious Diseases, Tokyo Women’s Medical University, Shinjuku-ku, Tokyo 162-8666, Japan; (Y.A.); (Y.U.)
| |
Collapse
|
5
|
Mizoguchi R, Karashima S, Miyajima Y, Ogura K, Kometani M, Aono D, Konishi S, Demura M, Tsujiguchi H, Hara A, Nakamura H, Yoneda T, Okamoto S, Satou K. Impact of gut microbiome on the renin-aldosterone system: Shika-machi Super Preventive Health Examination results. Hypertens Res 2023; 46:2280-2292. [PMID: 37280260 DOI: 10.1038/s41440-023-01334-7] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/18/2023] [Accepted: 05/07/2023] [Indexed: 06/08/2023]
Abstract
The renin-angiotensin-aldosterone system (RAAS) is a regulatory mechanism of the endocrine system and is associated with various diseases, including hypertension and renal and cardiovascular diseases. The gut microbiota (GM) have been associated with various diseases, mainly in animal models. However, to our knowledge, no studies have examined the relationship between the RAAS and GM in humans. The present study aimed to assess the association between the systemic RAAS and GM genera and their causal relationships. The study participants were 377 members of the general population aged 40 years or older in Shika-machi, Japan. Plasma renin activity (PRA), plasma aldosterone concentration (PAC), aldosterone-renin ratio (ARR), and GM composition were analyzed using the 16S rRNA method. The participants were divided into high and low groups according to the PRA, PAC, and ARR values. U-tests, one-way analysis of covariance, and linear discriminant analysis of effect size were used to identify the important bacterial genera between the two groups, and binary classification modeling using Random Forest was used to calculate the importance of the features. The results showed that Blautia, Bacteroides, Akkermansia, and Bifidobacterium were associated with the RAAS parameters. Causal inference analysis using the linear non-Gaussian acyclic model revealed a causal effect of Blautia on PAC via SBP. These results strengthen the association between the systemic RAAS and GM in humans, and interventions targeting the GM may provide new preventive measures and treatments for hypertension and renal disease.
Collapse
Affiliation(s)
- Ren Mizoguchi
- School of Biological Science and Technology, College of Science and Engineering, Kanazawa University, Kanazawa, Japan
| | - Shigehiro Karashima
- Institute of Liberal Arts and Science, Kanazawa University, Kanazawa, Japan.
| | - Yuna Miyajima
- Department of Clinical Laboratory Science, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Kohei Ogura
- Advanced Health Care Science Research Unit, Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Japan
| | - Mitsuhiro Kometani
- Department of Endocrinology and Metabolism, Kanazawa University Hospital, Kanazawa, Japan
| | - Daisuke Aono
- Department of Endocrinology and Metabolism, Kanazawa University Hospital, Kanazawa, Japan
| | - Seigo Konishi
- Department of Endocrinology and Metabolism, Kanazawa University Hospital, Kanazawa, Japan
| | - Masashi Demura
- Department of Hygiene, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Hiromasa Tsujiguchi
- Department of Public Health, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Akinori Hara
- Department of Public Health, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Hiroyuki Nakamura
- Department of Public Health, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Takashi Yoneda
- Department of Endocrinology and Metabolism, Kanazawa University Hospital, Kanazawa, Japan
- Department of Health Promotion and Medicine of the Future, Kanazawa University, Kanazawa, Japan
- Faculty of Transdisciplinary Sciences for Innovation, Institute of Transdisciplinary Sciences for Innovation, Kanazawa University, Kanazawa, Japan
| | - Shigefumi Okamoto
- Department of Clinical Laboratory Science, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
- Advanced Health Care Science Research Unit, Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Japan
| | - Kenji Satou
- Faculty of Transdisciplinary Sciences for Innovation, Institute of Transdisciplinary Sciences for Innovation, Kanazawa University, Kanazawa, Japan.
| |
Collapse
|
6
|
Furuya H, Ogura K, Takemoto N, Watanabe S, Yamazaki A, Ogai K, Sugama J, Okamoto S. A multilocus sequence typing method of Staphylococcus aureus DNAs in a sample from human skin. Microbiol Immunol 2023; 67:438-446. [PMID: 37574717 DOI: 10.1111/1348-0421.13094] [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: 04/07/2023] [Revised: 07/03/2023] [Accepted: 07/21/2023] [Indexed: 08/15/2023]
Abstract
The skin and mucous membranes are the primary sites of Staphylococcus aureus colonization, particularly those of health care personnel and patients in long-term care centers. We found that S. aureus colonized with a higher abundance ratio on skins which had recovered from pressure injury (PI) than on normal skins in our earlier research on the skin microbiota of bedridden patients. Multilocus sequence typing (MLST) is a useful tool for typing S. aureus isolated from clinical specimens. However, the MLST approach cannot be used in microbiota DNA owing to the contamination from other bacteria species. In this study, we developed a multiplex-nested PCR method to determine S. aureus MLST in samples collected from human skins. The seven pairs of forward and reverse primers were designed in the upstream and downstream regions, which were conserved specifically in S. aureus. The first amplifications of the seven pairs were conducted in a multiplex assay. The samples were diluted and applied to conventional PCR for MLST. We confirmed that the method amplified the seven allele sequences of S. aureus specifically in the presence of untargeted DNAs from human and other skin commensal bacteria. Using this assay, we succeeded in typing sequence types (STs) of S. aureus in the DNA samples derived from the skins healed from PI. Peaks obtained by Sanger sequencing showed that each sample contained one ST, which were mainly categorized into clonal complex 1 (CC1) or CC5. We propose that this culture-free approach may be used in detecting S. aureus in clinical specimens without isolation.
Collapse
Affiliation(s)
- Hiroka Furuya
- Department of Clinical Laboratory Science, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Kohei Ogura
- Advanced Health Care Science Research Unit, Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Ishikawa, Japan
- Laboratory of Basic and Applied Molecular Biotechnology, Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto, Gokasho, Japan
| | - Norihiko Takemoto
- Pathogenic Microbe Laboratory, Research Institute, National Center for Global Health and Medicine, Tokyo, Shinjuku-ku, Japan
| | - Shinya Watanabe
- Division of Bacteriology, Department of Infection and Immunity, Faculty of Medicine, Jichi Medical University, Shimotsuke-shi, Tochigi, Japan
| | - Ayaka Yamazaki
- Advanced Health Care Science Research Unit, Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Kazuhiro Ogai
- AI Hospital/Macro Signal Dynamics Research and Development Center, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Junko Sugama
- Research Center for Implementation Nursing Science Initiative, Fujita Health University, Toyoake, Aichi, Japan
| | - Shigefumi Okamoto
- Department of Clinical Laboratory Science, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
- Advanced Health Care Science Research Unit, Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Ishikawa, Japan
| |
Collapse
|
7
|
Yamazaki A, Ogura K, Minami K, Ogai K, Horiguchi T, Okamoto S, Mukai K. Oral microbiome changes associated with the menstrual cycle in healthy young adult females. Front Cell Infect Microbiol 2023; 13:1119602. [PMID: 37065196 PMCID: PMC10102642 DOI: 10.3389/fcimb.2023.1119602] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 03/20/2023] [Indexed: 04/03/2023] Open
Abstract
The relationship between the menstrual cycle and the oral microbiome has not been clarified. The purpose of this study was to assess potential changes in the oral microbiome of healthy young adults using 16S rRNA-based sequencing. Eleven females (aged 23–36 years) with stable menstrual cycles and without any oral problems were recruited. Saliva samples were collected before brushing every morning during the menstrual period. Based on basal body temperatures, menstrual cycles were divided into four phases, namely the menstrual, follicular, early luteal, and late luteal phases. Our results showed that the follicular phase had a significantly higher abundance ratio of the Streptococcus genus than the early and late luteal phases, whereas the abundance ratios of the Prevotella 7 and Prevotella 6 genera were significantly lower in the follicular phase than those in the early and late luteal phases and that in the early luteal phase, respectively. Alpha diversity by the Simpson index was significantly lower in the follicular phase than that in the early luteal phase, and beta diversity showed significant differences among the four phases. Using the relative abundance data and copy numbers of the 16S rRNA genes in the samples, the bacterial amounts in the four phases were compared, and we observed that the follicular phase had significantly lower amounts of the Prevotella 7 and Prevotella 6 genera than the menstrual and early luteal phase, respectively. These results indicate reciprocal changes with the Streptococcus genus and Prevotella genera, particularly in the follicular phase. In the present study, we showed that the oral microbiome profiles are affected by the menstrual cycles of healthy young adult females.
Collapse
Affiliation(s)
- Ayaka Yamazaki
- Division of Transdisciplinary Sciences, Graduate School of Frontier Science Initiative, Kanazawa University, Kanazawa, Japan
| | - Kohei Ogura
- Advanced Health Care Science Research Unit, Innovative Integrated Bio-Research Core, Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Japan
| | - Kana Minami
- Department of Health Development Nursing, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Kazuhiro Ogai
- AI Hospital/Macro Signal Dynamics Research and Development Center, Institute of Medical, Pharmaceutical, and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Tomomi Horiguchi
- Department of Clinical Nursing, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Shigefumi Okamoto
- Advanced Health Care Science Research Unit, Innovative Integrated Bio-Research Core, Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Japan
- Department of Clinical Laboratory Sciences, Faculty of Health Sciences, Institute of Medical, Pharmaceutical, and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Kanae Mukai
- Department of Clinical Nursing, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
- *Correspondence: Kanae Mukai,
| |
Collapse
|
8
|
Ogura K, Endo M, Hase T, Negami H, Tsuchiya K, Nishiuchi T, Suzuki T, Ogai K, Sanada H, Okamoto S, Sugama J. Potential biomarker proteins for aspiration pneumonia detected by shotgun proteomics using buccal mucosa samples: a cross-sectional case-control study. Clin Proteomics 2023; 20:9. [PMID: 36894881 PMCID: PMC9996945 DOI: 10.1186/s12014-023-09398-w] [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: 06/15/2022] [Accepted: 02/21/2023] [Indexed: 03/11/2023] Open
Abstract
BACKGROUND Aspiration pneumonia (AP), which is a major cause of death in the elderly, does present with typical symptoms in the early stages of onset, thus it is difficult to detect and treat at an early stage. In this study, we identified biomarkers that are useful for the detection of AP and focused on salivary proteins, which may be collected non-invasively. Because expectorating saliva is often difficult for elderly people, we collected salivary proteins from the buccal mucosa. METHODS We collected samples from the buccal mucosa of six patients with AP and six control patients (no AP) in an acute-care hospital. Following protein precipitation using trichloroacetic acid and washing with acetone, the samples were analyzed by liquid chromatography and tandem mass spectrometry (LC-MS/MS). We also determined the levels of cytokines and chemokines in non-precipitated samples from buccal mucosa. RESULTS Comparative quantitative analysis of LC-MS/MS spectra revealed 55 highly (P values < 0.10) abundant proteins with high FDR confidence (q values < 0.01) and high coverage (> 50%) in the AP group compared with the control group. Among the 55 proteins, the protein abundances of four proteins (protein S100-A7A, eukaryotic translation initiation factor 1, Serpin B4, and peptidoglycan recognition protein 1) in the AP group showed a negative correlation with the time post-onset; these proteins are promising AP biomarker candidates. In addition, the abundance of C-reactive protein (CRP) in oral samples was highly correlated with serum CRP levels, suggesting that oral CRP levels may be used as a surrogate to predict serum CRP in AP patients. A multiplex cytokine/chemokine assay revealed that MCP-1 tended to be low, indicating unresponsiveness of MCP-1 and its downstream immune pathways in AP. CONCLUSION Our findings suggest that oral salivary proteins, which are obtained non-invasively, can be utilized for the detection of AP.
Collapse
Affiliation(s)
- Kohei Ogura
- Advanced Health Care Science Research Unit, Institute for Frontier Science Initiative, Kanazawa University, 5-11-80 Kodatsuno, Kanazawa, Ishikawa, 9200942, Japan
| | - Maho Endo
- Advanced Health Care Science Research Unit, Institute for Frontier Science Initiative, Kanazawa University, 5-11-80 Kodatsuno, Kanazawa, Ishikawa, 9200942, Japan.,Nursing Department, Fujita Health University Hospital, 1-98 Dengakugakubo, Kutsukake-Cho, Toyoake, Aichi, 4701192, Japan
| | - Takashi Hase
- Department of Oral and Maxillofacial Surgery, Noto General Hospital, 6-4 Fujibashi, Nanao, Ishikawa, 9260816, Japan
| | - Hitomi Negami
- Department of Oral and Maxillofacial Surgery, Noto General Hospital, 6-4 Fujibashi, Nanao, Ishikawa, 9260816, Japan
| | - Kohsuke Tsuchiya
- Division of Immunology and Molecular Biology, Cancer Research Institute, Kanazawa University. Kakuma-Cho, Kanazawa, Ishikawa, 9201164, Japan
| | - Takumi Nishiuchi
- Division of Functional Genomics, Advanced Science Research Center, Kanazawa University, Kanazawa, Ishikawa, 9200934, Japan
| | - Takeshi Suzuki
- Division of Functional Genomics, Cancer Research Institute, Kanazawa University. Kakuma-Cho, Kanazawa, Ishikawa, 9201164, Japan
| | - Kazuhiro Ogai
- Institute of Medical, Pharmaceutical and Health Sciences, AI Hospital/Macro Signal Dynamics Research and Development Center, Kanazawa University, 5-11-80 Kodatsuno, Kanazawa, Ishikawa, 9200942, Japan
| | - Hiromi Sanada
- Ishikawa Prefectural Nursing University, 1-1 Gakuendai, Kahoku, Ishikawa, 929-1210, Japan
| | - Shigefumi Okamoto
- Advanced Health Care Science Research Unit, Institute for Frontier Science Initiative, Kanazawa University, 5-11-80 Kodatsuno, Kanazawa, Ishikawa, 9200942, Japan. .,Department of Clinical Laboratory Sciences, Faculty of Health Sciences, Institute of Medical, Pharmaceutical, and Health Sciences, Kanazawa University, 5-11-80 Kodatsuno, Kanazawa, Ishikawa, 9200942, Japan.
| | - Junko Sugama
- Research Center for Implementation Nursing Science Initiative, Innovation Promotion Division, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-Cho, Toyoake, Aichi, 4701192, Japan
| |
Collapse
|
9
|
Kawai A, Iwata S, Shimoi T, Kobayashi E, Ogura K, Yoshida A, Okuma H, Goto Y, Morizane C, Yoshida Y, Katoh Y, Yatabe Y, Yonemori K, Nakamura K, Nishida T, Higashi T. 126P Comprehensive efforts to address multifaceted issues of rare cancers and sarcomas in Japan. ESMO Open 2023. [DOI: 10.1016/j.esmoop.2023.101072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
|
10
|
Oishi Y, Tsujita H, Arai T, Sakai R, Sato S, Tanaka H, Ogura K, Masaki R, Kondo S, Tsukamoto S, Higuchi S, Sumida A, Matsumoto H, Shinke T. The vascular response to ultrathin biodegradable polymer sirolimus-eluting stent at 2-weeks and 1-year follow up in patients with ST-elevation myocardial infarction. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Recent clinical study suggests newer-generation drug-eluting stents (DES) that combine ultrathin strut and nano-coating with biodegradable polymers sirolimus-eluting stent (BP-SES) could improve long-term clinical outcomes in patients with ST-elevation myocardial infarction (STEMI) undergoing primary percutaneous coronary intervention (PCI) over current generation DES. However, the details of vascular response in very early and chronic phase have not been systematically addressed.
Objective and method
We exploratory investigate early and chronic vascular response following BP-SES implantation in patients with STEMI to reveal mechanism of the favorable clinical outcomes in recent studies using frequency domain-optical coherence tomography (FD-OCT).
Consecutive twenty-four patients with STEMI who underwent FD-OCT after primary PCI and were eligible for follow-up FD-OCT at 2 weeks and 1 year after implantation were enrolled between June 2018 and August 2020.
OCT was performed immediately after PCI, at 2-weeks (2W) and 1-year (1Y) after the primary PCI. Struts were recorded as uncovered if any part was visibly exposed in the lumen or covered if a layer of tissue covered all reflecting surfaces. Struts of stents that are smaller than 3.0mm of diameter with more than 80μm between the center reflection and the adjacent vessel surface were recorded as malapposed. The reduction of atherothrombotic protrusion burden within the stent was also assessed.
Results
Twenty-four patients (age 64.9±11.4 years, male 83.3%) were enrolled.
The percentage of uncovered struts significantly decreased from post-PCI to 2W follow-up and from 2W follow-up to 1Y follow-up (62±20% post-PCI versus 27±11% at 2W follow up, p<0.0001 and 2W follow-up versus 3.3±3.3% at 1Y follow up, p<0.0001). Malapposed struts also decreased from post-PCI to 2W follow-up (4.1±3.6% post-PCI versus 1.5±2.2% at 2W follow-up, p<0.0001), but no significant difference was shown between 2W follow-up and 1Y follow-up (2W follow-up versus 1.0±2.3 at 1Y follow up, p=0.12). The average protrusion area of athero-thrombotic burden decreased (0.57±0.32 at post-PCI versus 0.42±0.22 mm2 at 2W follow up, p<0.0001) and its volume showed similar tendency (16.6±10.7 at post-PCI versus 12.9±8.23 mm3 at 2W follow up, p=0.0011). Thrombus was shown in all patients at post-PCI, but two patients (8.0%) showed it at 1Y follow-up.
Conclusion(s)
This study elucidated very early and chronic vascular responses following ultrathin strut BP-SES implantation in STEMI patients by FD-OCT. It showed resolution of athero-thrombotic materials in very early phase and favorable progression of strut coverage in very early and chronic phase.
Funding Acknowledgement
Type of funding sources: None.
Collapse
Affiliation(s)
- Y Oishi
- Showa University Hospital , Tokyo , Japan
| | - H Tsujita
- Showa University Hospital , Tokyo , Japan
| | - T Arai
- Showa University Hospital , Tokyo , Japan
| | - R Sakai
- Showa University Hospital , Tokyo , Japan
| | - S Sato
- Showa University Hospital , Tokyo , Japan
| | - H Tanaka
- Showa University Hospital , Tokyo , Japan
| | - K Ogura
- Showa University Hospital , Tokyo , Japan
| | - R Masaki
- Showa University Hospital , Tokyo , Japan
| | - S Kondo
- Showa University Hospital , Tokyo , Japan
| | | | - S Higuchi
- Showa University Hospital , Tokyo , Japan
| | - A Sumida
- Showa University Hospital , Tokyo , Japan
| | | | - T Shinke
- Showa University Hospital , Tokyo , Japan
| |
Collapse
|
11
|
Hamazaki N, Kamiya K, Nozaki K, Yamashita M, Uchida S, Noda T, Ogura K, Nagumo D, Maekawa E, Yamaoka-Tojo M, Matsunaga A, Kitamura T, Ako J, Miyaji K. Trends and outcomes of early rehabilitation in intensive care unit for patients with cardiovascular disease – a cohort study with propensity score-matched analysis. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Early rehabilitation in the intensive care unit (ICU), including early mobility therapy, is known to improve the clinical outcomes in patients with critically ill. However, the effectiveness of acute-phase cardiovascular rehabilitation (CR) during ICU treatment have not been thoroughly evaluated in patients with cardiovascular disease (CVD).
Purpose
We aimed to investigate the trends and outcomes of acute-phase CR in the ICU for patients with CVD, including in-hospital and long-term clinical outcomes.
Methods
We reviewed 1948 consecutive patients with CVD admitted to tertiary academic ICU at a university hospital. Patients were arbitrarily assessed by an ICU team consisting of medical and surgical doctors, nurses and physiotherapists within 24 hours after admission to ICU to discover whether their rehabilitation could be initiated according to the specific clinical trial and statement. As clinical characteristics, disease aetiology, comorbid conditions, and ICU treatment were obtained from an electronic database. We evaluated the probability of return to walking independence and return to home as in-hospital clinical outcomes. All patients were followed for five years and investigated all-cause and cardiovascular events after hospital discharge as long-term clinical outcomes. The associations between the implementation of CR during ICU treatment (ICU-CR) and clinical outcomes were evaluated using propensity score-matched analysis with adjustment for clinical characteristics in all matched patients and various subgroups, including aged >65 years, surgical patients, emergency, and length of ICU stay ≥48 hours.
Results
Out of studied patients, 1092 patients received ICU-CR, the number of which positively correlated with year-trend (r=0.986, P<0.001). After propensity score matching with adjustment for clinical characteristics including calendar years, 758 patients were included for analysis (pairs of n=379 ICU-CR and non-ICU-CR). The ICU-CR was significantly associated with a higher probability of return to walking independence (incident rate ratio [IRR], 2.04; 95% confidence interval [CI], 1.77–2.36) and return to home (IRR, 1.22 95% CI, 1.05–1.41). These associations were consistently observed in various subgroups regarding CVD conditions (Figure 1). During the median follow-up periods of 2.6 years, all-cause clinical events and cardiovascular events occurred in 289 patients (38.1%) and 153 patients (20.2%), respectively. The ICU-CR showed significantly lower rates of five-year all-cause and cardiovascular events than non-ICU-CR (hazard ratio [95% CI] for all-cause events and cardiovascular events, 0.71 [0.56–0.89] and 0.69 [0.50–0.95], respectively, Figure 2).
Conclusions
The implementation of acute-phase CR in the ICU increased with year-trend, considered beneficial to improve in-hospital and long-term clinical outcomes in patients with CVD and various subgroups of relatively severe disease conditions.
Funding Acknowledgement
Type of funding sources: None.
Collapse
Affiliation(s)
- N Hamazaki
- Kitasato University Hospital, Department of Rehabilitation , Sagamihara , Japan
| | - K Kamiya
- Kitasato University School of Allied Health Sciences, Department of Rehabilitation , Sagamihara , Japan
| | - K Nozaki
- Kitasato University Hospital, Department of Rehabilitation , Sagamihara , Japan
| | - M Yamashita
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - S Uchida
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - T Noda
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - K Ogura
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - D Nagumo
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - E Maekawa
- Kitasato University School of Medicine, Department of Cardiovascular Medicine , Sagamihara , Japan
| | - M Yamaoka-Tojo
- Kitasato University School of Allied Health Sciences, Department of Rehabilitation , Sagamihara , Japan
| | - A Matsunaga
- Kitasato University School of Allied Health Sciences, Department of Rehabilitation , Sagamihara , Japan
| | - T Kitamura
- Kitasato University School of Medicine, Department of Cardiovascular Surgery , Sagamihara , Japan
| | - J Ako
- Kitasato University School of Medicine, Department of Cardiovascular Medicine , Sagamihara , Japan
| | - K Miyaji
- Kitasato University School of Medicine, Department of Cardiovascular Surgery , Sagamihara , Japan
| |
Collapse
|
12
|
Ogura K, Hamazaki N, Kamiya K, Kitamura T, Kobayashi S, Ichikawa T, Yamashita M, Uchida S, Noda T, Nagumo D, Maekawa E, Yamaoka-Tojo M, Matsunaga A, Ako J, Miyaji K. Perme ICU Mobility Score as a comprehensive assessment tool of acute-phase rehabilitation is correlated with clinical outcomes in patients after cardiovascular surgery. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Early mobility therapy in the intensive care unit (ICU) is widely employed to improve the physical function and prognosis of patients with critically ill. On the other hand, patients who undergo cardiovascular surgery frequently suffer from disabilities after ICU care due to their cardiopulmonary conditions and treatments. However, few studies have reported the procedures and assessments of acute-phase rehabilitation in these patients. Recently, the Perme ICU Mobility Score (Perme Score) was developed as a reliable tool to assess comprehensive mobility status of patients in the ICU. We hypothesised that the Perme Score is a useful tool for assessing the mobility levels in the ICU and predicting clinical outcomes in patients undergoing acute-phase rehabilitation after cardiovascular surgery.
Purpose
To investigate the associations between the Perme Score within the second days after cardiovascular surgery and the patients' clinical outcomes, including physical function and the incidence of clinical events.
Methods
We studied 224 consecutive patients (34.4% female; aged 65±13 years) who were admitted to the ICU of a tertiary academic hospital after cardiac and/or major vascular surgery. Clinical characteristics including patient profiles, comorbidities, surgical details and APACHE II and SOFA scores were evaluated on ICU admission. The Perme Score contains categories on mental status, potential mobility barriers, muscle strength and mobility level, with higher scores indicating greater activity levels in the ICU. We assessed the Perme Score within the second days after the surgery. As a physical function at hospital discharge, we measured the six-minute walk distance (6MWD). The primary endpoint was a composite outcome of the number of all-cause mortality and/or all-cause unplanned readmission. We analysed the associations of the Perme Score with the 6MWD and the incidence of clinical events using multiple regression analysis and multivariate Poisson regression analysis, respectively.
Results
After adjusting for clinical confounding factors, a higher Perme Score was an independent factor of a higher 6MWD (Table 1). During the median follow-up period of 1.3 years, 51 cases of all-cause mortality/readmission occurred in 37 (16.5%) patients, with an incidence rate of 18.6/100 person-years. In the multivariate Poisson regression analysis, even after adjusting for the severity score in the ICU, a higher Perme Score was significantly and independently associated with lower rates of all-cause clinical events (adjusted incident rate ratio: 0.96, 95% confidence interval: 0.93–0.99, P=0.008, Figure 1).
Conclusions
The Perme Score within the second days after cardiovascular surgery is correlated with physical function at hospital discharge and the incidence of clinical events after discharge. Thus, a comprehensive assessment of acute-phase rehabilitation after cardiovascular surgery may be useful in predicting clinical outcomes.
Funding Acknowledgement
Type of funding sources: None.
Collapse
Affiliation(s)
- K Ogura
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - N Hamazaki
- Kitasato University Hospital, Department of Rehabilitation , Sagamihara , Japan
| | - K Kamiya
- Kitasato University School of Allied Health Sciences, Department of Rehabilitation , Sagamihara , Japan
| | - T Kitamura
- Kitasato University School of Medicine, Department of Cardiovascular Surgery , Sagamihara , Japan
| | - S Kobayashi
- Kitasato University Hospital, Department of Rehabilitation , Sagamihara , Japan
| | - T Ichikawa
- Kitasato University Hospital, Department of Rehabilitation , Sagamihara , Japan
| | - M Yamashita
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - S Uchida
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - T Noda
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - D Nagumo
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - E Maekawa
- Kitasato University School of Medicine, Department of Cardiovascular Medicine , Sagamihara , Japan
| | - M Yamaoka-Tojo
- Kitasato University School of Allied Health Sciences, Department of Rehabilitation , Sagamihara , Japan
| | - A Matsunaga
- Kitasato University School of Allied Health Sciences, Department of Rehabilitation , Sagamihara , Japan
| | - J Ako
- Kitasato University School of Medicine, Department of Cardiovascular Medicine , Sagamihara , Japan
| | - K Miyaji
- Kitasato University School of Medicine, Department of Cardiovascular Surgery , Sagamihara , Japan
| |
Collapse
|
13
|
Nagumo D, Hamazaki N, Kamiya K, Obara S, Kobayashi S, Nozaki K, Ichikawa T, Yamashita M, Uchida S, Noda T, Ogura K, Maekawa E, Yamaoka-Tojo M, Matsunaga A, Ako J. Impact of small-airway disease on exercise intolerance and long-term outcomes in patients with heart failure and reduced or preserved ejection fraction. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Exercise intolerance in patients with heart failure (HF) is a strong indicator of a poor prognosis. As the respiratory impairment in HF patients, the small airway is reportedly more susceptible than central airways, which results in increased airway resistance and may cause poor outcomes. However, the impact of small-airway disease (SAD) on exercise intolerance and prognosis in patients with HF is still unclear.
Purpose
We investigated the associations between SAD and exercise intolerance in patients with HF, and the clinical significance of SAD for long-term clinical events with a reduced or preserved ejection fraction.
Methods
We reviewed 1015 patients with HF (mean age, 66.9±14.6 years; male, 64.5%) admitted for medical treatment. Patients with a prior history of chronic respiratory disease or an obstructive lung pattern – defined as the forced expiratory volume (%) in 1 s relative to <70% forced vital capacity using spirometry – were excluded. Characteristics including HF aetiology, comorbidities conditions, medications, blood parameters, and echocardiographic variables were obtained from clinical records. All patients underwent spirometry at hospital discharge, and SAD was defined as the maximum mid-expiratory flow (%) relative to a <60% predicted value. At hospital discharge, we measured 6-min walk distance (6MWD), and <300 m was considered as exercise intolerance. The primary endpoint was a composite clinical event of all-cause death and/or unplanned readmission for HF. Multivariate logistic regression analysis was used to assess the association between SAD and exercise intolerance. The multivariate Cox proportional hazard model was used to clarify whether SAD was an independent predictor for the incidence of clinical events. We also performed subgroup analyses in each multivariate analysis based on a left ventricular ejection fraction (LVEF) of 40%.
Result
SAD was observed in 479 (47.2%) patients. LVEF subgroups included 458 (45.1%) and 518 (51.0%) patients with LVEF <40% and ≥40%, respectively. After adjusting for clinical characteristics, SAD was independently associated with 6MWD <300 m (Figure 1). Moreover, this association was consistently observed in the LVEF <40% and ≥40% (Figure 1). During the median follow-up period of 1.5 years, all-cause death/readmission occurred in 431 patients (42.5%), and the incidence rate was 17.5/100 person-years. In the multivariate Cox proportional hazard model, SAD was independently associated with lower event-free survival rates in all patients and the LVEF <40% subgroup, but not LVEF ≥40% subgroup (Figure 2A, B, and C, respectively).
Conclusion
This study is the first to reveal that SAD is associated with exercise intolerance in patients with HF regardless of LVEF. Moreover, SAD may have a predictive significance for long-term outcomes in patients with HF and subgroups with reduced, but not preserved ejection fraction.
Funding Acknowledgement
Type of funding sources: None.
Collapse
Affiliation(s)
- D Nagumo
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - N Hamazaki
- Kitasato University Hospital, Department of Rehabilitation , Sagamihara , Japan
| | - K Kamiya
- Kitasato University of Allied Health Sciences, Department of Rehabilitation , Sagamihara , Japan
| | - S Obara
- Kitasato University Hospital, Department of Rehabilitation , Sagamihara , Japan
| | - S Kobayashi
- Kitasato University Hospital, Department of Rehabilitation , Sagamihara , Japan
| | - K Nozaki
- Kitasato University Hospital, Department of Rehabilitation , Sagamihara , Japan
| | - T Ichikawa
- Kitasato University Hospital, Department of Rehabilitation , Sagamihara , Japan
| | - M Yamashita
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - S Uchida
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - T Noda
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - K Ogura
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - E Maekawa
- Kitasato University School of Medicine, Department of Cardiovascular Medicine , Sagamihara , Japan
| | - M Yamaoka-Tojo
- Kitasato University of Allied Health Sciences, Department of Rehabilitation , Sagamihara , Japan
| | - A Matsunaga
- Kitasato University of Allied Health Sciences, Department of Rehabilitation , Sagamihara , Japan
| | - J Ako
- Kitasato University School of Medicine, Department of Cardiovascular Medicine , Sagamihara , Japan
| |
Collapse
|
14
|
Miyajima Y, Karashima S, Ogai K, Taniguchi K, Ogura K, Kawakami M, Nambo H, Kometani M, Aono D, Demura M, Yoneda T, Tsujiguchi H, Hara A, Nakamura H, Okamoto S. Impact of gut microbiome on dyslipidemia in japanese adults: Assessment of the Shika-machi super preventive health examination results for causal inference. Front Cell Infect Microbiol 2022; 12:908997. [PMID: 36118024 PMCID: PMC9479221 DOI: 10.3389/fcimb.2022.908997] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 08/12/2022] [Indexed: 11/13/2022] Open
Abstract
Dyslipidemia (DL) is one of the most common lifestyle-related diseases. There are few reports showing the causal relationship between gut microbiota (GM) and DL. In the present study, we used a linear non-Gaussian acyclic model (LiNGAM) to evaluate the causal relationship between GM and DL. A total of 79 men and 82 women aged 40 years or older living in Shika-machi, Ishikawa Prefecture, Japan were included in the analysis, and their clinical information was investigated. DNA extracted from the GM was processed to sequence the 16S rRNA gene using next-generation sequencing. Participants were divided into four groups based on sex and lipid profile information. The results of one-way analysis of covariance, linear discriminant analysis effect size, and least absolute value reduction and selection operator logistic regression model indicated that several bacteria between men and women may be associated with DL. The LiNGAM showed a presumed causal relationship between different bacteria and lipid profiles in men and women. In men, Prevotella 9 and Bacteroides were shown to be potentially associated with changes in low- and high-density lipoprotein cholesterol levels. In women, the LiNGAM results showed two bacteria, Akkermansia and Escherichia/Shigella, had a presumptive causal relationship with lipid profiles. These results may provide a new sex-based strategy to reduce the risk of developing DL and to treat DL through the regulation of the intestinal environment using specific GM.
Collapse
Affiliation(s)
- Yuna Miyajima
- Department of Clinical Laboratory Science, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Shigehiro Karashima
- Institute of Liberal Arts and Science, Kanazawa University, Kanazawa, Japan
- *Correspondence: Shigehiro Karashima, ; Shigefumi Okamoto,
| | - Kazuhiro Ogai
- AI Hospital/Macro Signal Dynamics Research and Development Center, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Kouki Taniguchi
- Department of Clinical Laboratory Science, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Kohei Ogura
- Advanced Health Care Science Research Unit, Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Japan
| | - Masaki Kawakami
- School of Electrical, Information and Communication Engineering, College of Science and Engineering, Kanazawa University, Kanazawa, Japan
| | - Hidetaka Nambo
- School of Electrical, Information and Communication Engineering, College of Science and Engineering, Kanazawa University, Kanazawa, Japan
| | - Mitsuhiro Kometani
- Department of Endocrinology and Metabolism, Kanazawa University Hospital, Kanazawa, Japan
| | - Daisuke Aono
- Department of Endocrinology and Metabolism, Kanazawa University Hospital, Kanazawa, Japan
| | - Masashi Demura
- Department of Hygiene, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Takashi Yoneda
- Department of Endocrinology and Metabolism, Kanazawa University Hospital, Kanazawa, Japan
- Department of Health Promotion and Medicine of the Future, Kanazawa University, Kanazawa, Japan
- Faculty of Transdisciplinary Sciences, Institute of Transdisciplinary Sciences, Kanazawa University, Kanazawa, Japan
| | - Hiromasa Tsujiguchi
- Department of Public Health, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Akinori Hara
- Department of Public Health, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Hiroyuki Nakamura
- Department of Public Health, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Shigefumi Okamoto
- Department of Clinical Laboratory Science, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
- Advanced Health Care Science Research Unit, Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Japan
- *Correspondence: Shigehiro Karashima, ; Shigefumi Okamoto,
| |
Collapse
|
15
|
Ogura K, Furuya H, Takahashi N, Shibata K, Endo M, Watanabe S, Cui L, Miyoshi-Akiyama T, Okamoto S, Ogai K, Sugama J. Interspecies Regulation Between Staphylococcus caprae and Staphylococcus aureus Colonized on Healed Skin After Injury. Front Microbiol 2022; 13:818398. [PMID: 35300478 PMCID: PMC8921658 DOI: 10.3389/fmicb.2022.818398] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 01/20/2022] [Indexed: 12/04/2022] Open
Abstract
Staphylococcus spp. colonize commensally on the human skin. Some commensal coagulase-negative staphylococci and Staphylococcus aureus are also involved in nosocomial infections. Bacteria were collected from skin healed from pressure injury (PI). After the collection time points, some patients suffered from recurrent PI (RPI). This study analyzed the characteristics of Staphylococcus spp. on healed skin before recurrence between healed skin that suffered from RPI within 6 weeks (RPI group) and healed skin that did not suffer within the duration (non-RPI group) by Staphylococcus spp.-specific sequencing. Of the seven patients in the RPI group, two were dominated by S. aureus and four by Staphylococcus caprae, coagulase-negative human commensal staphylococci in the RPI group. Using mouse models, both S. caprae and S. aureus, but not Staphylococcus epidermidis, colonized on skin healed from injury at significantly higher rates than normal skin. Although subcutaneous injection of S. caprae did not induce lesion formation, the bacterium exhibited high hemolytic activity on human red blood cells. Lesion formation by subcutaneous injection of S. aureus was significantly suppressed in the presence of S. caprae. The hemolytic activity of rabbit blood cells of S. aureus was suppressed by S. caprae, whereas the hemolytic activity of S. caprae was dramatically suppressed by S. aureus. Data indicated that each of the two Staphylococcus spp. suppresses the pathogenicity of the other and that the imbalance between the two is associated with RPI.
Collapse
Affiliation(s)
- Kohei Ogura
- Advanced Health Care Science Research Unit, Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Japan
| | - Hiroka Furuya
- Department of Clinical Laboratory Science, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Natsuki Takahashi
- Advanced Health Care Science Research Unit, Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Japan
| | - Kana Shibata
- Advanced Health Care Science Research Unit, Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Japan
| | - Maho Endo
- Advanced Health Care Science Research Unit, Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Japan
| | - Shinya Watanabe
- Division of Bacteriology, Department of Infection and Immunity, Faculty of Medicine, Jichi Medical University, Shimotsuke, Japan
| | - Longzhu Cui
- Division of Bacteriology, Department of Infection and Immunity, Faculty of Medicine, Jichi Medical University, Shimotsuke, Japan
| | - Tohru Miyoshi-Akiyama
- Pathogenic Microbe Laboratory, Research Institute, National Center for Global Health and Medicine, Shinjuku, Japan
| | - Shigefumi Okamoto
- Advanced Health Care Science Research Unit, Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Japan.,Department of Clinical Laboratory Science, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Kazuhiro Ogai
- AI Hospital/Macro Signal Dynamics Research and Development Center, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Junko Sugama
- Advanced Health Care Science Research Unit, Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Japan.,Research Center for Implementation Nursing Science Initiative, School of Health Sciences, Fujita Health University, Toyoake, Japan
| |
Collapse
|
16
|
Ogura K, Kaji D, Sasaki M, Otsuka Y, Takemoto N, Miyoshi-Akiyama T, Kikuchi K. Predominance of ST8 and CC1/spa-t1784 methicillin-resistant Staphylococcus aureus isolates in Japan and their genomic characteristics. J Glob Antimicrob Resist 2022; 28:195-202. [DOI: 10.1016/j.jgar.2022.01.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 01/06/2022] [Accepted: 01/17/2022] [Indexed: 11/16/2022] Open
|
17
|
Sakai R, Sekimoto T, Arai T, Tanaka H, Ogura K, Oishi Y, Nomura K, Sakai K, Arai K, Tsujita H, Kondo S, Tsukamoto S, Mori H, Koba S, Shinke T. Contributions of small dense LDL and oxidized LDL on the formation of neoatherosclerosis in patients under statin treatment. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.3370] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Aim
In-stent neoatherosclerosis (NA) has emerged as an important contributing factor to late stent failure and cardiovascular events. The aim of this study was to investigate whether lipid markers are associated with NA using optical coherence tomography (OCT) after percutaneous coronary intervention (PCI) in patients with coronary artery disease under well-controlled low density lipoprotein cholesterol (LDL-c) on statin treatment.
Methods
We enrolled consecutive 115 patients under statin treatment who underwent PCI with current-generation drug-eluting stent for acute and chronic coronary syndrome. OCT image and various lipid markers were obtained at 1-year for scheduled research assessment. NA was defined as a lipid laden neointima or calcified neointima. Both small dense LDL-c (sd-LDL-c) and remnant lipoprotein cholesterol (RL-c) were measured using direct homogenous assay.
Results
During an average follow-up of 13 months, NA was observed in 14 (13.6%) patients. Not LDL-c but sd-LDL-c, Malondialdehyde-modified LDL (MDA-LDL) as oxidized LDL and (RL-c) were significantly higher in patients with NA. The optimal threshold values of sd-LDL-c, MDA-LDL and RL-c for predicting NA according to receiver operating characteristics analysis were 32.3 mg/dl, 91.0 U/L, and 3.3 mg/dL, respectively. On multivariate logistic regression analysis, sd-LDL-c (≥32.3 mg/dL) and MDA (≥91.0 U/L) were significantly associated with NA (odds ratio [OR]:13.62, p=0.016, OR: 12.68, p=0.01, respectively).
Conclusions
In statin-treated patients, sd-LDL-c and MDA-LDL but not LDL-c might be useful biomarkers to identify the formation of NA at 1 years after PCI. Aggressive reduction of these atherogenic LDL may have a potential to prevent the formation of NA.
Funding Acknowledgement
Type of funding sources: None.
Collapse
Affiliation(s)
- R Sakai
- Showa University Hospital, Tokyo, Japan
| | | | - T Arai
- Showa University Hospital, Tokyo, Japan
| | - H Tanaka
- Showa University Hospital, Tokyo, Japan
| | - K Ogura
- Showa University Hospital, Tokyo, Japan
| | - Y Oishi
- Showa University Hospital, Tokyo, Japan
| | - K Nomura
- Showa University Hospital, Tokyo, Japan
| | - K Sakai
- Showa University Hospital, Tokyo, Japan
| | - K Arai
- Showa University Hospital, Tokyo, Japan
| | - H Tsujita
- Showa University Hospital, Tokyo, Japan
| | - S Kondo
- Showa University Hospital, Tokyo, Japan
| | | | - H Mori
- Showa University Hospital, Tokyo, Japan
| | - S Koba
- Showa University Hospital, Tokyo, Japan
| | - T Shinke
- Showa University Hospital, Tokyo, Japan
| |
Collapse
|
18
|
Arai T, Sekimoto T, Mori H, Sakai R, Tanaka H, Oishi Y, Ogura K, Nomura K, Sakai K, Tsujita H, Kondo S, Koba S, Shinke T. Higher plasma level of small dense low-density lipoprotein cholesterol in ST-segment-elevation myocardial infarction patients with plaque rupture. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Aim
The aim of this study was to compare small dense low-density lipoprotein cholesterol (sd-LDL-c) and various lipid markers between patients exhibiting plaque rupture (PR) in the culprit lesions evaluated by optical coherence tomography (OCT) imaging and those without PR in ST-segment elevation myocardial infarction (STEMI) patients.
Methods
We studied consecutive 60 de novo culprit lesions in 60 patients with STEMI who underwent pre-intervention OCT. PR was defined as a plaque containing a cavity that had overlying residual fibrous caps. Plasma sd-LDL-c was measured directly by homogeneous assay at the time of primary percutaneous coronary intervention.
Results
The patients were classified into PR (n=40, 66.7%) or non-PR (n=20, 33.3%). There were no significant differences in low-density lipoprotein cholesterol (LDL-c), non-high-density lipoprotein cholesterol (non-HDL-c) and pre-admission statin therapy between two groups (135.1±38.0 mg/dL vs 129.2±43.8 mg/dL; p=0.35, 157.1±37.4 mg/dL vs 143.0±37.7 mg/dL; p=0.24, 15.0% vs 20.0%; p=0.93). However, sd-LDL-c level was significantly higher in patients with PR than those with non-PR (44.0±18.1 mg/dL vs 28.0±9.3 mg/dL; p=0.0005). On multiple logistic regression analysis, sd-LDL-c was an independent predictor of PR (odds ratio, 1.14 per 1 mg/dL; p=0.0063).
Conclusion
Sd-LDL-c was significantly associated with PR of the culprit lesion in patients with STEMI.
Funding Acknowledgement
Type of funding sources: None.
Collapse
Affiliation(s)
- T Arai
- Showa University Hospital, Tokyo, Japan
| | | | - H Mori
- Showa University Hospital, Tokyo, Japan
| | - R Sakai
- Showa University Hospital, Tokyo, Japan
| | - H Tanaka
- Showa University Hospital, Tokyo, Japan
| | - Y Oishi
- Showa University Hospital, Tokyo, Japan
| | - K Ogura
- Showa University Hospital, Tokyo, Japan
| | - K Nomura
- Showa University Hospital, Tokyo, Japan
| | - K Sakai
- Showa University Hospital, Tokyo, Japan
| | - H Tsujita
- Showa University Hospital, Tokyo, Japan
| | - S Kondo
- Showa University Hospital, Tokyo, Japan
| | - S Koba
- Showa University Hospital, Tokyo, Japan
| | - T Shinke
- Showa University Hospital, Tokyo, Japan
| |
Collapse
|
19
|
Ishihara H, Ogura K, Nguyen VA, Miyoshi-Akiyama T, Okamoto S, Takemoto N. Corrigendum: Comparative genome analysis of three Group A Streptococcus dysgalactiae subsp. equisimilis strains isolated in Japan. J Med Microbiol 2021; 70. [PMID: 34406921 DOI: 10.1099/jmm.0.001390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Haruka Ishihara
- Medical, Pharmaceutical and Health Sciences, Kanazawa University, 5-11-80 Kodatsuno, Kanazawa, Ishikawa 920-0942, Japan
- Clinical Laboratory, Dental Hospital, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8549, Japan
| | - Kohei Ogura
- Advanced Health Care Science Research Unit, Institute for Frontier Science Initiative, Kanazawa University, 5-11-80 Kodatsuno, Kanazawa, Ishikawa 920-0942, Japan
| | - Van An Nguyen
- Department of Viral Infection and International Health, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takaramachi, Kanazawa Ishikawa 920-8640, Japan
| | - Tohru Miyoshi-Akiyama
- Pathogenic Microbe Laboratory, Research Institute, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku, Tokyo 162-8655, Japan
| | - Shigefumi Okamoto
- Medical, Pharmaceutical and Health Sciences, Kanazawa University, 5-11-80 Kodatsuno, Kanazawa, Ishikawa 920-0942, Japan
| | - Norihiko Takemoto
- Pathogenic Microbe Laboratory, Research Institute, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku, Tokyo 162-8655, Japan
| |
Collapse
|
20
|
Ogai K, Shibata K, Takahashi N, Ogura K, Okamoto S, Sugama J. Amplicon-based skin microbiome profiles collected by tape stripping with different adhesive film dressings: a comparative study. BMC Microbiol 2021; 21:54. [PMID: 33602131 PMCID: PMC7891171 DOI: 10.1186/s12866-021-02122-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 02/09/2021] [Indexed: 12/12/2022] Open
Abstract
Background Medical film dressings have been used to obtain skin microbiota for skin microbiome studies, although their adhesive force may be so strong that the skin could be injured when applied to those who have fragile skin, such as older people. Several products with less adhesive force are available, although their applicability for skin microbiome studies remains unknown. This study aimed to test whether the dressings with less adhesive force could be used for amplicon-based skin microbiome studies. A set of three different film dressings, with acrylic, urethane, or silicone adhesive, was applied to the back skin of nine healthy young participants. The copy number of the 16S ribosomal RNA (rRNA) gene, microbial compositions, and alpha and beta diversity indices were analyzed by amplicon analysis of the 16S rRNA gene using next-generation sequencing and were compared among the three film dressings. Results The dressing with acrylic adhesive yielded the highest copy number of 16S rRNA genes, followed by that with urethane adhesive. The silicone-adhesive dressing yielded a significantly lower copy number of the 16S rRNA gene. The microbial composition of skin microbiota was similar among the three film dressings, although significant differences in the relative abundance of Pseudomonas species and alpha diversity indices were found in the silicone-adhesive dressing. The Bray–Curtis dissimilarity was significantly higher between the acrylic- and silicone-adhesive dressings than between the acrylic- and urethane-adhesive dressings. No adverse effects related to tape stripping were observed for any of the film dressings. Conclusion We recommend dressings with acrylic or urethane adhesive for amplicon-based skin microbiome studies. An acrylic adhesive has an advantage in the yield of skin microbiota, and a urethane adhesive should be chosen when applied to fragile skin. The adhesive force of the dressing with silicone adhesive was too weak to be used for collecting skin microbiota. Supplementary Information The online version contains supplementary material available at 10.1186/s12866-021-02122-4.
Collapse
Affiliation(s)
- Kazuhiro Ogai
- AI Hospital/Macro Signal Dynamics Research and Development Center, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, 5-11-80 Kodatsuno, Kanazawa, Ishikawa, 9200942, Japan. .,Department of Nursing, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, 5-11-80 Kodatsuno, Kanazawa, Ishikawa, 9200942, Japan.
| | - Kana Shibata
- Department of Clinical Laboratory Science, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, 5-11-80 Kodatsuno, Kanazawa, Ishikawa, 9200942, Japan
| | - Natsuki Takahashi
- Department of Clinical Laboratory Science, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, 5-11-80 Kodatsuno, Kanazawa, Ishikawa, 9200942, Japan
| | - Kohei Ogura
- Advanced Health Care Science Research Unit, Institute for Frontier Science Initiative, Kanazawa University, 5-11-80 Kodatsuno, Kanazawa, Ishikawa, 9200942, Japan
| | - Shigefumi Okamoto
- Department of Clinical Laboratory Science, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, 5-11-80 Kodatsuno, Kanazawa, Ishikawa, 9200942, Japan
| | - Junko Sugama
- Department of Nursing, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, 5-11-80 Kodatsuno, Kanazawa, Ishikawa, 9200942, Japan. .,Advanced Health Care Science Research Unit, Institute for Frontier Science Initiative, Kanazawa University, 5-11-80 Kodatsuno, Kanazawa, Ishikawa, 9200942, Japan.
| |
Collapse
|
21
|
Ishihara H, Ogura K, Nguyen VA, Miyohi-Akiyama T, Okamoto S, Takemoto N. Comparative genome analysis of three Group A Streptococcus dysgalactiae subsp. equisimilis strains isolated in Japan. J Med Microbiol 2021; 70. [PMID: 33533709 DOI: 10.1099/jmm.0.001322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Introduction . Streptococcus dysgalactiae subsp. equisimilis (SDSE) is a β-hemolytic streptococcus that causes severe invasive streptococcal infections, especially in the elderly and people with underlying diseases. SDSE strains are primarily characterized by Lancefield group G or C antigens.Hypothesis/Gap Statement. We have previously reported the prevalence of Lancefield group A SDSE (GA-SDSE) strains in Japan and have analysed the draft genome sequences of these strains. As GA-SDSE is a rare type of SDSE, only one complete genome has been sequenced to date.Aim. The present study is focused on genetic characteristics of GA-SDSE strains. In order to examine molecular characteristics, we also tested growth inhibition of other streptococci by GA-SDSE.Methodology. We determined the complete genome sequences of three GA-SDSE strains by two new generation sequencing systems (short-read and long-read sequencing data). Using the sequences, we also conducted a comparative analysis of GA-SDSE and group C/G SDSE strains. In addition, we tested multiplex and quantitative PCRs targeting the GA-SDSE, group G SDSE, and S. pyogenes.Results. We found a group-specific conserved region in GA-SDSE strains that is composed of genes encoding predicted anti-bacteriocin and streptococcal lantibiotic (Sal) proteins. Multiplex and quantitative PCRs targeting the GA-SDSE-specific region were able to distinguish between GA-SDSE, other SDSE, and S. pyogenes strains. The growth of GA-SDSE was suppressed in the presence of group G SDSE, indicating a possible explanation for the low frequency of isolation of GA-SDSE.Conclusion. The comparative genome analysis shows that the genome of GA-SDSE has a distinct arrangement, enabling the differentiation between S. pyogenes, GA-SDSE, and other SDSE strains using our PCR methods.
Collapse
Affiliation(s)
- Haruka Ishihara
- Clinical Laboratory, Dental Hospital, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8549, Japan.,Medical, Pharmaceutical and Health Sciences, Kanazawa University, 5-11-80 Kodatsuno, Kanazawa, Ishikawa 920-0942, Japan
| | - Kohei Ogura
- Advanced Health Care Science Research Unit, Institute for Frontier Science Initiative, Kanazawa University, 5-11-80 Kodatsuno, Kanazawa, Ishikawa 920-0942, Japan
| | - Van An Nguyen
- Department of Viral Infection and International Health, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takaramachi, Kanazawa, Ishikawa 920-8640, Japan
| | - Tohru Miyohi-Akiyama
- Pathogenic Microbe Laboratory, Research Institute, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku, Tokyo 162-8655, Japan
| | - Shigefumi Okamoto
- Medical, Pharmaceutical and Health Sciences, Kanazawa University, 5-11-80 Kodatsuno, Kanazawa, Ishikawa 920-0942, Japan
| | - Norihiko Takemoto
- Pathogenic Microbe Laboratory, Research Institute, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku, Tokyo 162-8655, Japan
| |
Collapse
|
22
|
Iwabuchi T, Ogura K, Tamba K, Tsunekawa Y, Sugano M, Hagiwara K, Kiso A. Cepharanthine induces the proliferation of human dermal papilla cells and stimulates vascular endothelial growth factor expression through increased intracellular calcium mobilization and hypoxia-inducible factor activation. Clin Exp Dermatol 2021; 46:694-703. [PMID: 33296524 DOI: 10.1111/ced.14533] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 11/20/2020] [Accepted: 12/04/2020] [Indexed: 11/26/2022]
Abstract
BACKGROUND Cepharanthine (CEP), a compound extracted from the vine Stephania cephalantha, is commonly prescribed to treat alopecia areata; however, the scientific evidence for its efficacy is limited. AIM To investigate the effect of CEP and its structural analogues on human hair growth in vitro. METHODS The effects of CEP and three of its structural analogues on the proliferation of human dermal papilla cells (hDPCs) and human outer root sheath cells (hORSCs) were investigated. Their effects on vascular endothelial growth factor (VEGF) expression were also assessed by real-time PCR. Activation of pathways leading to VEGF expression, such as intracellular Ca2+ mobilization and hypoxia-inducible factor (HIF) expression, was also characterized. RESULTS CEP and two of its structural analogues significantly stimulated the growth of hDPCs but not hORSCs. Moreover, CEP and all three structural analogues significantly induced the expression of VEGF in hDPCs. CEP increased the intracellular Ca2+ concentration in hDPCs. CEP also increased the expression of HIF-1α and HIF-2α and induced the expression of HIF-responsive genes in hDPCs, even under normoxia. CONCLUSIONS These results suggest that CEP and its structural analogues have the potential to restore hair growth by promoting the proliferation of hDPCs and increasing their expression of VEGF.
Collapse
Affiliation(s)
- T Iwabuchi
- Faculty of Bioscience and Biotechnology, Tokyo University of Technology, Hachioji, Tokyo, Japan
| | - K Ogura
- Faculty of Bioscience and Biotechnology, Tokyo University of Technology, Hachioji, Tokyo, Japan
| | - K Tamba
- Faculty of Bioscience and Biotechnology, Tokyo University of Technology, Hachioji, Tokyo, Japan
| | - Y Tsunekawa
- Faculty of Bioscience and Biotechnology, Tokyo University of Technology, Hachioji, Tokyo, Japan
| | - M Sugano
- Faculty of Bioscience and Biotechnology, Tokyo University of Technology, Hachioji, Tokyo, Japan
| | - K Hagiwara
- Faculty of Bioscience and Biotechnology, Tokyo University of Technology, Hachioji, Tokyo, Japan
| | - A Kiso
- Research Center, Maruzen Pharmaceuticals Co. Ltd., Fukuyama, Hiroshima, Japan
| |
Collapse
|
23
|
Fujii T, Ohno N, Sawazaki T, Ogura K, Miyati T, Sugama J. Gravity magnetic resonance imaging measurement of muscle pump change accompanied by aging and posture. Jpn J Nurs Sci 2021; 18:e12407. [PMID: 33474807 PMCID: PMC8359411 DOI: 10.1111/jjns.12407] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 11/16/2020] [Accepted: 12/13/2020] [Indexed: 11/30/2022]
Abstract
AIM To date no age-comparative study has been reported about effect of exercise on muscle pump action change, while its effect is suggested to differ in ages. This study aims to clarify the changes in muscle pump action with aging by measuring the muscle and vein area, and blood flow in lower legs. METHODS Subjects were healthy volunteers and consisted of three groups: young age group (N = 20), middle age group (N = 20) and old age group (N = 16). The lower leg flexor muscle area and popliteal vein area were measured by using T1-weighed magnetic resonance imaging at the condition pre- and post-ankle exercise in three positions. Moreover, popliteal blood flow velocity was also measured using phase contrast magnetic resonance imaging. RESULTS The elderly had the highest number of individuals who had exercise habits (p < .001). In a multiple linear regression analysis, sitting posture, leg muscle volume, and rate of change in the soleus muscle were significantly related to blood flow velocity change. CONCLUSIONS No difference was found in the changes in muscle pump action with age. The study results suggested that elderly people with exercise habits might be able to maintain the muscle pump action.
Collapse
Affiliation(s)
- Taiga Fujii
- Graduate School of Frontier Science InitiativeKanazawa UniversityKanazawaJapan
| | - Naoki Ohno
- Faculty of Health SciencesInstitute of Medical, Pharmaceutical and Health Sciences, Kanazawa UniversityKanazawaJapan
| | - Takuto Sawazaki
- Department of NursingNagoya City University HospitalNagoyaJapan
| | - Kohei Ogura
- Advanced Health Care Science Research UnitInstitute for Frontier Science Initiative, Kanazawa UniversityKanazawaJapan
| | - Tosiaki Miyati
- Faculty of Health SciencesInstitute of Medical, Pharmaceutical and Health Sciences, Kanazawa UniversityKanazawaJapan
| | - Junko Sugama
- Advanced Health Care Science Research UnitInstitute for Frontier Science Initiative, Kanazawa UniversityKanazawaJapan
| |
Collapse
|
24
|
Ogura K, Yahiro K, Moss J. Cell Death Signaling Pathway Induced by Cholix Toxin, a Cytotoxin and eEF2 ADP-Ribosyltransferase Produced by Vibrio cholerae. Toxins (Basel) 2020; 13:toxins13010012. [PMID: 33374361 PMCID: PMC7824611 DOI: 10.3390/toxins13010012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 12/20/2020] [Accepted: 12/22/2020] [Indexed: 12/14/2022] Open
Abstract
Pathogenic microorganisms produce various virulence factors, e.g., enzymes, cytotoxins, effectors, which trigger development of pathologies in infectious diseases. Cholera toxin (CT) produced by O1 and O139 serotypes of Vibrio cholerae (V. cholerae) is a major cytotoxin causing severe diarrhea. Cholix cytotoxin (Cholix) was identified as a novel eukaryotic elongation factor 2 (eEF2) adenosine-diphosphate (ADP)-ribosyltransferase produced mainly in non-O1/non-O139 V. cholerae. The function and role of Cholix in infectious disease caused by V. cholerae remain unknown. The crystal structure of Cholix is similar to Pseudomonas exotoxin A (PEA) which is composed of an N-terminal receptor-recognition domain and a C-terminal ADP-ribosyltransferase domain. The endocytosed Cholix catalyzes ADP-ribosylation of eEF2 in host cells and inhibits protein synthesis, resulting in cell death. In a mouse model, Cholix caused lethality with severe liver damage. In this review, we describe the mechanism underlying Cholix-induced cytotoxicity. Cholix-induced apoptosis was regulated by mitogen-activated protein kinase (MAPK) and protein kinase C (PKC) signaling pathways, which dramatically enhanced tumor necrosis factor-α (TNF-α) production in human liver, as well as the amount of epithelial-like HepG2 cancer cells. In contrast, Cholix induced apoptosis in hepatocytes through a mitochondrial-dependent pathway, which was not stimulated by TNF-α. These findings suggest that sensitivity to Cholix depends on the target cell. A substantial amount of information on PEA is provided in order to compare/contrast this well-characterized mono-ADP-ribosyltransferase (mART) with Cholix.
Collapse
Affiliation(s)
- Kohei Ogura
- Advanced Health Care Science Research Unit, Institute for Frontier Science Initiative, Kanazawa University, Kanazawa 920-0942, Japan
- Correspondence: (K.O.); (K.Y.); Tel.: +81-76-265-2590 (K.O.); +81-43-226-2048 (K.Y.)
| | - Kinnosuke Yahiro
- Department of Molecular Infectiology, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan
- Correspondence: (K.O.); (K.Y.); Tel.: +81-76-265-2590 (K.O.); +81-43-226-2048 (K.Y.)
| | - Joel Moss
- Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892-1590, USA;
| |
Collapse
|
25
|
Ogura K, Tsujita H, Arai T, Sakai R, Tanaka H, Masaki R, Oishi Y, Nomura K, Arai K, Sekimoto T, Kondo S, Tsukamoto S, Mori H, Matsumoto H, Shinke T. Early vascular healing following bioresorbable-polymer sirolimus-eluting stent implantation in comparison with durable-polymer everolimus-eluting stent: sequential optical coherence tomography study. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Orsiro ultrathin-strut bioresorbable-polymer sirolimus-eluting stent (BP-SES) might facilitate early vascular healing responses that seems to be associated with improved long-term clinical outcomes. We compared the early vascular healing responses to BP-SES and Xience durable-polymer everolimus-eluting stent (DP-EES) in patients with chronic coronary syndrome (CCS) using optical coherence tomography (OCT).
Methods
A total of 40 patients with CCS receiving OCT-guided PCI were included. 20 patients were assigned to BP-SES, and 20 to DP-EES. OCT was performed immediately after stent placement (post-procedure) and at 1 month follow-up. Struts were recorded as uncovered if any part was visibly exposed in the lumen or covered if a layer of tissue covered all reflecting surfaces. The incidence of intrastent thrombus (IS-Th) and irregular protrusion (IRP) were also assessed.
Results
At 1 month, the percentage of uncovered struts was significantly lower in the BP-SES compared with the DP-EES (2.8±1.6% vs. 5.8±1.8%, respectively; p<0.001), and that of malapposed struts was similar between both groups (2.5±3.1% vs. 2.4±2.2%; p=0.76). There were no differences in the incidence of IS-Th (65.0% vs. 55.0% at post-procedure; p=0.54, 30.0% vs. 35.0% at 1 month; p=0.75) and IRP (30.0% vs. 25.0% at post-procedure; p=0.74). IRP had completely resolved at 1 month in both groups.
Conclusion
Early vascular healing response to Orsiro BP-SES implantation was revealed in CCS patients at 1 month compared with Xience DP-EES. Orsiro BP-SES may have a potential to shorten the dual antiplatelet therapy duration.
Funding Acknowledgement
Type of funding source: None
Collapse
Affiliation(s)
- K Ogura
- Showa University Hospital, Tokyo, Japan
| | - H Tsujita
- Showa University Hospital, Tokyo, Japan
| | - T Arai
- Showa University Hospital, Tokyo, Japan
| | - R Sakai
- Showa University Hospital, Tokyo, Japan
| | - H Tanaka
- Showa University Hospital, Tokyo, Japan
| | - R Masaki
- Showa University Hospital, Tokyo, Japan
| | - Y Oishi
- Showa University Hospital, Tokyo, Japan
| | - K Nomura
- Showa University Hospital, Tokyo, Japan
| | - K Arai
- Showa University Hospital, Tokyo, Japan
| | | | - S Kondo
- Showa University Hospital, Tokyo, Japan
| | | | - H Mori
- Showa University Hospital, Tokyo, Japan
| | | | - T Shinke
- Showa University Hospital, Tokyo, Japan
| |
Collapse
|
26
|
Iwai T, Ogura K, Yamashita M, Ogata T, Hattori T, Mitsuyoshi T, Imagumbai T, Kokubo M. PO-1036: Analysis of serum pancreatic exocrine enzyme after radiotherapy for pancreatic carcinoma. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01053-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
27
|
Oishi Y, Shinke T, Tanaka H, Ogura K, Arai K, Masaki R, Nomura K, Kosaki R, Sakai K, Sekimoto T, Tsujita H, Kondo S, Tsukamoto S, Mori H, Matsumoto H. Early vascular responses to ultrathin biodegradable polymer sirolimus-eluting stent for the treatment of st-elevation myocardial infarction. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Recent clinical study suggests newer-generation drug-eluting stents (DES) that combine ultrathin strut and nano-coating with biodegradable polymers sirolimus-eluting stent (BP-SES) could improve long-term clinical outcomes in patients with ST-elevation myocardial infarction (STEMI) undergoing primary percutaneous coronary intervention (PCI) over current generation DES. However, safety profiles in very early phase have not been systematically addressed.
Objective and method
We exploratory investigate early vascular response following BP-SES implantation in patients with STEMI to reveal mechanism of the favorable clinical outcomes in recent studies using frequency domain-optical coherence tomography (FD-OCT).
Consecutive twenty patients with STEMI who underwent FD-OCT immediately after primary PCI and were eligible for follow-up FD-OCT at 2 weeks after implantation were enrolled between June 2018 and November 2019.
Results
Twenty patients (age 62.7±11.3 years, male 85.0%) were enrolled with frequencies of hypertension (45.0%), diabetes mellitus (35.0%), dyslipidemia (55.0%) and smoking (80.0%). Aspiration catheter were used in all patients, and 1.13±0.34 stents were used. Only one patient (5.0%) received chronic antiplatelet therapy with aspirin prior to the onset of STEMI. All patients started to receive prasugrel as thienopyridine from this event and continued dual antiplatelet therapy for 2 weeks.
The percentage of uncovered struts significantly decreased from post-procedure to 2W follow-up (69±18% post-procedure versus 30±11% at 2W follow up, p<0.0001). Malapposed struts also decreased (5.6±5.7% post-procedure versus0.9±1.2% at 2W follow up, p<0.0001).The average protrusion area of athero-thrombotic burden numerically decreased (0.37±0.19 at post-procedure versus 0.34±0.14 mm2 at 2W follow up, p=0.19) and its volume showed similar tendency (10.60±6.40 at post-procedure versus 9.36±5.14 mm3 at 2W follow up, p=0.19).
Conclusion(s)
This study firstly elucidated very early vascular responses following ultrathin strut BP-SES implantation in STEMI patients, showing early progression of strut coverage and resolution of athero-thrombotic materials. This technology may have a potential to overcome the current generation DESs in this clinical setting.
Thrombus, uncovered and malapposed struts
Funding Acknowledgement
Type of funding source: None
Collapse
Affiliation(s)
- Y Oishi
- Showa University Hospital, Tokyo, Japan
| | - T Shinke
- Showa University Hospital, Tokyo, Japan
| | - H Tanaka
- Showa University Hospital, Tokyo, Japan
| | - K Ogura
- Showa University Hospital, Tokyo, Japan
| | - K Arai
- Showa University Hospital, Tokyo, Japan
| | - R Masaki
- Showa University Hospital, Tokyo, Japan
| | - K Nomura
- Showa University Hospital, Tokyo, Japan
| | - R Kosaki
- Showa University Hospital, Tokyo, Japan
| | - K Sakai
- Showa University Hospital, Tokyo, Japan
| | | | - H Tsujita
- Showa University Hospital, Tokyo, Japan
| | - S Kondo
- Showa University Hospital, Tokyo, Japan
| | | | - H Mori
- Showa University Hospital, Tokyo, Japan
| | | |
Collapse
|
28
|
Nguyen VA, Ogura K, Matsue M, Takemoto N, Mukai K, Nakajima Y, Hoang TL, Iwata Y, Sakai N, Wada T, Hashimoto W, Okamoto S, Ichimura H. Novel Hyaluronate Lyase Involved in Pathogenicity of Streptococcus dysgalactiae subsp. equisimilis. Front Microbiol 2020; 11:552418. [PMID: 33072013 PMCID: PMC7541959 DOI: 10.3389/fmicb.2020.552418] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 08/28/2020] [Indexed: 11/30/2022] Open
Abstract
Streptococcus dysgalactiae subsp. equisimilis (SDSE) causes cellulitis, bacteremia, and invasive diseases, such as streptococcal toxic shock syndrome. Although SDSE infection is more prevalent among elderly individuals and those with diabetes mellitus than infections with Streptococcus pyogenes (Group A streptococci; GAS) and Streptococcus agalactiae (Group B streptococci; GBS), the mechanisms underlying the pathogenicity of SDSE remain unknown. SDSE possesses a gene hylD encoding a hyaluronate lyase (HylD), whose homologue (HylB) is involved in pathogenicity of GBS, while the role of HylD has not been characterized. In this study, we focused on the enzyme HylD produced by SDSE; HylD cleaves hyaluronate (HA) and generates unsaturated disaccharides via a β-elimination reaction. Hyaluronate-agar plate assays revealed that SDSE promoted dramatic HA degradation. SDSE expresses both HylD and an unsaturated glucuronyl hydrolase (UGL) that catalyzes the degradation of HA-derived oligosaccharides; as such, SDSE was more effective at HA degradation than other β-hemolytic streptococci, including GAS and GBS. Although HylD shows some homology to HylB, a similar enzyme produced by GBS, HylD exhibited significantly higher enzymatic activity than HylB at pH 6.0, conditions that are detected in the skin of both elderly individuals and those with diabetes mellitus. We also detected upregulation of transcripts from hylD and ugl genes from SDSE wild-type collected from the mouse peritoneal cavity; upregulated expression of ugl was not observed in ΔhylD SDSE mutants. These results suggested that disaccharides produced by the actions of HylD are capable of triggering downstream pathways that catalyze their destruction. Furthermore, we determined that infection with SDSEΔhylD was significantly less lethal than infection with the parent strain. When mouse skin wounds were infected for 2 days, intensive infiltration of neutrophils was observed around the wound areas infected with SDSE wild-type but not SDSEΔhylD. Our investigation suggested that HylD and UGL play important roles in nutrient acquisition from hosts, followed by the bacterial pathogenicity damaging host tissues.
Collapse
Affiliation(s)
- Van An Nguyen
- Department of Viral Infection and International Health, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Kohei Ogura
- Advanced Health Care Science Research Unit, Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Japan
| | - Miki Matsue
- Department of Clinical Laboratory Science, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Norihiko Takemoto
- Pathogenic Microbe Laboratory, Research Institute, National Center for Global Health and Medicine, Shinjuku, Japan
| | - Kanae Mukai
- Department of Nursing Sciences, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Yukari Nakajima
- Department of Nursing Sciences, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Thuy Linh Hoang
- Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa, Japan
| | - Yasunori Iwata
- Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa, Japan.,Division of Infection Control, Kanazawa University, Kanazawa, Japan
| | - Norihiko Sakai
- Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa, Japan
| | - Takashi Wada
- Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa, Japan.,Department of Clinical Laboratory, Kanazawa University Hospital, Kanazawa, Japan
| | - Wataru Hashimoto
- Laboratory of Basic and Applied Molecular Biotechnology, Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Uji, Japan
| | - Shigefumi Okamoto
- Department of Clinical Laboratory Science, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Hiroshi Ichimura
- Department of Viral Infection and International Health, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| |
Collapse
|
29
|
Tsutsuki H, Ogura K, Moss J, Yahiro K. Host response to the subtilase cytotoxin produced by locus of enterocyte effacement-negative Shiga-toxigenic Escherichia coli. Microbiol Immunol 2020; 64:657-665. [PMID: 32902863 DOI: 10.1111/1348-0421.12841] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 08/05/2020] [Accepted: 09/07/2020] [Indexed: 12/26/2022]
Abstract
Shiga-toxigenic Escherichia coli (STEC) is a major bacterium responsible for disease resulting from foodborne infection, including bloody diarrhea and hemolytic uremic syndrome. STEC produces important virulence factors such as Shiga toxin (Stx) 1 and/or 2. In the STEC family, some locus of enterocyte effacement-negative STEC produce two different types of cytotoxins, namely, Stx2 and subtilase cytotoxin (SubAB). The Stx2 and SubAB cytotoxins are structurally similar and composed of one A subunit and pentamer of B subunits. The catalytically active A subunit of SubAB is a subtilase-like serine protease and specifically cleaves an endoplasmic reticulum (ER) chaperone 78-kDa glucose-regulated protein (GRP78/BiP), a monomeric ATPase that is crucial in protein folding and quality control. The B subunit binds to cell surface receptors. SubAB recognizes sialic carbohydrate-modified cell surface proteins as a receptor. After translocation into cells, SubAB is delivered to the ER, where it cleaves GRP78/BiP. SubAB-catalyzed BiP cleavage induces ER stress, which causes various cell events including inhibition of protein synthesis, suppression of nuclear factor-kappa B activation, apoptotic cell death, and stress granules formation. In this review, we describe SubAB, the SubAB receptor, and the mechanism of cell response to the toxin.
Collapse
Affiliation(s)
- Hiroyasu Tsutsuki
- Department of Microbiology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Kohei Ogura
- Advanced Health Care Science Research Unit, Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Japan
| | - Joel Moss
- Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Kinnosuke Yahiro
- Department of Molecular Infectiology, Graduate School of Medicine, Chiba University, Chiba, Japan
| |
Collapse
|
30
|
Ogai K, Ogura K, Ohgi N, Park S, Aoki M, Urai T, Nagase S, Okamoto S, Sugama J. Stability of Skin Microbiome at Sacral Regions of Healthy Young Adults, Ambulatory Older Adults, and Bedridden Older Patients After 2 Years. Biol Res Nurs 2020; 23:82-90. [PMID: 32696660 DOI: 10.1177/1099800420941151] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVE The sacral skin of bedridden older patients often develops a dysbiotic condition. To clarify whether the condition changes or is sustained over time, we analyzed the skin microbiome and the skin physiological functions of the sacral skin in patients who completed our 2017 study. METHODS In 2019, we collected the microbiome on the sacral region and measured sacral skin hydration, pH, and transepidermal water loss from 7 healthy young adults, 10 ambulatory older adults, and 8 bedridden older patients, all of whom had been recruited for the 2017 study. For microbiome analysis, 16S ribosomal RNA-based metagenomic analysis was used. RESULTS No significant differences in the microbial compositions or any alpha diversity metrics were found in the bedridden older patients between the 2017 and 2019 studies; the higher gut-related bacteria were still observed on the sacral skin of the bedridden older patients even after 2 years. Only skin pH showed a significant decrease, approaching normal skin condition, in the bedridden older patients over 2 years. CONCLUSION This study indicated that gut-related bacteria stably resided in the sacral skin in bedridden patients, even if the patient had tried to restore skin physiological functions using daily skin care. We propose the importance of skin care that focuses more on bacterial decontamination for the sacral region of bedridden older patients, in order to decrease the chances of skin/wound infection and inflammation.
Collapse
Affiliation(s)
- Kazuhiro Ogai
- Department of Nursing, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, 12858Kanazawa University, Japan
| | - Kohei Ogura
- Advanced Health Care Science Research Unit, Institute for Frontier Science Initiative, 12858Kanazawa University, Japan
| | - Nozomi Ohgi
- Department of Clinical Laboratory Science, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, 12858Kanazawa University, Japan
| | - Seohui Park
- Department of Clinical Laboratory Science, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, 12858Kanazawa University, Japan
| | - Miku Aoki
- Division of Nursing, Faculty of Medical Sciences, 26423University of Fukui, Japan
| | - Tamae Urai
- Faculty of Nursing, 57948Toyama Prefectural University, Japan
| | - Satoshi Nagase
- Department of Clinical Laboratory Science, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, 12858Kanazawa University, Japan
| | - Shigefumi Okamoto
- Department of Clinical Laboratory Science, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, 12858Kanazawa University, Japan
| | - Junko Sugama
- Department of Nursing, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, 12858Kanazawa University, Japan.,Advanced Health Care Science Research Unit, Institute for Frontier Science Initiative, 12858Kanazawa University, Japan
| |
Collapse
|
31
|
Shibata K, Ogai K, Ogura K, Urai T, Aoki M, Arisandi D, Takahashi N, Okamoto S, Sanada H, Sugama J. Skin Physiology and its Microbiome as Factors Associated with the Recurrence of Pressure Injuries. Biol Res Nurs 2020; 23:75-81. [PMID: 32648469 DOI: 10.1177/1099800420941100] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND Preventing recurrent pressure injuries (RPIs) is one of the important challenges faced in healthcare, but the risk factors of RPIs have not been fully revealed. This study aims to explore factors associated with RPIs, by focusing on skin physiology and its microbiome as local factors crucial for the health of healed tissue after pressure injury healing. METHODS This prospective observational study was conducted in a long-term care facility in Japan with patients whose PIs had healed within 1 month. Skin physiology was evaluated by stratum corneum (SC) hydration, pH, and transepidermal water loss. Skin bacteria was collected by tape stripping, followed by 16S ribosomal RNA-based metagenomics analysis. These parameters were evaluated every two weeks over a period of six weeks. RESULTS A total of 30 patients were included in this study, and 8 patients (26.7%) had an RPI within 6 weeks. In this study, significantly lower SC hydration and a higher rate of Staphylococcus species on the healed site were found in the RPI group. DISCUSSION A high rate of RPIs (about one in four) points out the necessity of a further care strategy on the healed PIs. Lower skin hydration and/or the increase in Staphylococcus bacteria may have a potential to be used as a biomarker for the prediction of RPIs, or may be an intervention point for the prevention of RPIs by, for example, skin cleansing with moisturizing care.
Collapse
Affiliation(s)
- Kana Shibata
- Advanced Health Care Science Research Unit, Innovative Integrated Bio-Research Core, Institute for Frontier Science Initiative, 12858Kanazawa University, Kanazawa, Japan
| | - Kazuhiro Ogai
- Department of Clinical Nursing, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, 12858Kanazawa University, Kanazawa, Japan
| | - Kohei Ogura
- Advanced Health Care Science Research Unit, Innovative Integrated Bio-Research Core, Institute for Frontier Science Initiative, 12858Kanazawa University, Kanazawa, Japan
| | - Tamae Urai
- Faculty of Nursing, 57948Toyama Prefectural University, Imizu, Japan
| | - Miku Aoki
- Division of Nursing, Faculty of Medical Sciences, 26423University of Fukui, Fukui, Japan
| | - Defa Arisandi
- Department of Clinical Nursing, Division of Health Sciences, Graduate School of Medical Sciences, 12858Kanazawa University, Kanazawa, Japan.,The Nursing Institute of Muhammadiyah Pontianak, West Borneo, Indonesia
| | - Natsuki Takahashi
- Advanced Health Care Science Research Unit, Innovative Integrated Bio-Research Core, Institute for Frontier Science Initiative, 12858Kanazawa University, Kanazawa, Japan
| | - Shigefumi Okamoto
- Department of Clinical Laboratory Sciences, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, 12858Kanazawa University, Kanazawa, Japan
| | - Hiromi Sanada
- Global Nursing Research Center, Graduate School of Medicine, 13143The University of Tokyo, Tokyo, Japan.,Department of Gerontological Nursing/Wound Care Management, Graduate School of Medicine, 13143The University of Tokyo, Tokyo, Japan
| | - Junko Sugama
- Advanced Health Care Science Research Unit, Innovative Integrated Bio-Research Core, Institute for Frontier Science Initiative, 12858Kanazawa University, Kanazawa, Japan.,Department of Clinical Nursing, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, 12858Kanazawa University, Kanazawa, Japan
| |
Collapse
|
32
|
Matsue M, Ogura K, Sugiyama H, Miyoshi-Akiyama T, Takemori-Sakai Y, Iwata Y, Wada T, Okamoto S. Pathogenicity Characterization of Prevalent-Type Streptococcus dysgalactiae subsp. equisimilis Strains. Front Microbiol 2020; 11:97. [PMID: 32117127 PMCID: PMC7010647 DOI: 10.3389/fmicb.2020.00097] [Citation(s) in RCA: 3] [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: 08/21/2019] [Accepted: 01/17/2020] [Indexed: 12/26/2022] Open
Abstract
Streptococcus dysgalactiae subsp. equisimilis (SDSE) is an emerging human pathogen that causes severe invasive streptococcal diseases. Recent reports have shown that SDSE exhibits high pathogenicity with different mechanisms from that of Streptococcus pyogenes, although the two streptococci possess some common virulence factors such as streptolysin, streptokinase, and cell-binding proteins. To date, only a few studies have examined the variety of mechanisms expressing the pathogenicity of SDSE. Among nine SDSE clinical isolates sequenced in this study, we present in vitro and in vivo analyses of KNZ01 and KNZ03, whose emm and multilocus species types (MLSTs) are prevalent in Japan and other countries. For the comparison of pathogenicity, we also utilized the ATCC 12394 strain. The whole-genome analysis showed that KNZ03 and ATCC 12394 are categorized into an identical clonal complex by MLST and are phylogenetically close. However, the three strains exhibited different characteristics for pathogenicity in vitro; ATCC 12394 showed significant cytotoxicity to human keratinocytes and release of streptolysin O (SLO) compared to KNZ01 and KNZ03; KNZ03 exhibited significantly high hemolytic activity, but did not secrete SLO. KNZ01 and KNZ03 adhered to human keratinocytes at a higher rate than ATCC 12394; KNZ03 showed a higher rate of survival after a brief (30 min) incubation with human neutrophils compared to the other two strains; also, KNZ01 grew more rapidly in the presence of human serum. In vivo subcutaneous infection commonly resulted in ulcer formation in the three strains 7 days after infection. KNZ01-infected mice showed significant body weight loss 2 days after infection. Besides, on post-infection day 2, only KNZ01 remained in the cutaneous tissues of mice. Scanning electron microscopy analysis revealed that KNZ01 formed an extracellular structure (biofilm), which was probably composed of cell wall-anchoring proteins, in the presence of glucose and human serum. The extracellular structure of ATCC 12394 was also changed dramatically in response to culture conditions, whereas that of KNZ03 did not. Our study proposed that each SDSE strain possesses different virulence factors characteristics for mediating pathogenicity in humans.
Collapse
Affiliation(s)
- Miki Matsue
- Department of Clinical Laboratory Science, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Kohei Ogura
- Advanced Health Care Science Research Unit, Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Japan
| | - Hironori Sugiyama
- Division of Instrumental Analysis, Engineering and Technology Department, Kanazawa University, Kanazawa, Japan
| | - Tohru Miyoshi-Akiyama
- Pathogenic Microbe Laboratory, Research Institute, National Center for Global Health and Medicine, Shinjuku, Japan
| | - Yukiko Takemori-Sakai
- Division of Clinical Laboratory Medicine, Kanazawa University, Kanazawa, Japan.,Division of Infection Control, Kanazawa University, Kanazawa, Japan
| | - Yasunori Iwata
- Division of Infection Control, Kanazawa University, Kanazawa, Japan.,Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa, Japan
| | - Takashi Wada
- Division of Clinical Laboratory Medicine, Kanazawa University, Kanazawa, Japan.,Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa, Japan
| | - Shigefumi Okamoto
- Department of Clinical Laboratory Science, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| |
Collapse
|
33
|
Ishihara H, Ogura K, Miyoshi‐Akiyama T, Nakamura M, Kaya H, Okamoto S. Prevalence and genomic characterization of Group A
Streptococcus dysgalactiae
subsp.
equisimilis
isolated from patients with invasive infections in Toyama prefecture, Japan. Microbiol Immunol 2019; 64:113-122. [DOI: 10.1111/1348-0421.12760] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 11/06/2019] [Accepted: 11/19/2019] [Indexed: 11/29/2022]
Affiliation(s)
- Haruka Ishihara
- Department of Clinical Laboratory Science, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health SciencesKanazawa UniversityKanazawa Ishikawa Japan
| | - Kohei Ogura
- Advanced Health Care Science Research Unit, Institute for Frontier Science InitiativeKanazawa UniversityKanazawa Ishikawa Japan
| | - Tohru Miyoshi‐Akiyama
- Pathogenic Microbe Laboratory, Research InstituteNational Center for Global Health and MedicineShinjuku‐ku Tokyo Japan
| | - Masahiko Nakamura
- Department of Medical LaboratoryToyama Prefectural Central HospitalToyama Toyama Japan
| | - Hiroyasu Kaya
- Department of Internal MedicineToyama Prefectural Central HospitalToyama Toyama Japan
| | - Shigefumi Okamoto
- Department of Clinical Laboratory Science, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health SciencesKanazawa UniversityKanazawa Ishikawa Japan
| |
Collapse
|
34
|
Hegedűs M, Shiroma Y, Iwaoka K, Hosoda M, Suzuki T, Tamakuma Y, Yamada R, Tsujiguchi T, Yamaguchi M, Ogura K, Tazoe H, Akata N, Kashiwakura I, Tokonami S. Cesium concentrations in various environmental media at Namie, Fukushima. J Radioanal Nucl Chem 2019. [DOI: 10.1007/s10967-019-06942-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
35
|
Matsue M, Mori Y, Nagase S, Sugiyama Y, Hirano R, Ogai K, Ogura K, Kurihara S, Okamoto S. Measuring the Antimicrobial Activity of Lauric Acid against Various Bacteria in Human Gut Microbiota Using a New Method. Cell Transplant 2019; 28:1528-1541. [PMID: 31665909 PMCID: PMC6923562 DOI: 10.1177/0963689719881366] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [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] [Indexed: 01/22/2023] Open
Abstract
Lauric acid (LA) has a broad spectrum of anti-microbiological activities against enveloped viruses and various bacteria, and might be useful to protect against microbial infection and control the balance and distribution of bacteria in human gut microbiota. It is not necessarily more difficult to measure antimicrobial activity the traditional way, but it is, however, more laborious. In the present study, we developed a new method to measure the antimicrobial activity of LA in multiple samples with a microplate reader. A "test complex" (TC) was produced consisting of 100 μL of agar medium with LA in the bottom layer and 300 μL of broth in the top layer in 96-well deep-well microplates. Afterward, analysis of the broth in the top layer showed that the antimicrobial activity was the same as that of the "control complex," (CC) which consisted of 100 μL of agar medium in the bottom layer and 300 μL of broth with LA in the top layer. Furthermore, evaluation of the antimicrobial effect of the TC when using a microplate reader was the same as that with the use of the colony counting method. The colony counting method has confirmed that the antimicrobial activity of LA when bacteria are inoculated into the broth was equivalent between CC and TC, and we validated this by correlating the number of bacteria with absorbance. In addition, the broth itself in TC was transparent enough that the turbidity of broth can be used as an index of the number of bacteria, which enabled the use of a microplate reader for multiple samples. For human gut microbes, LA was shown to have low antimicrobial activity against commensal lactic acid bacteria, but high antimicrobial activity against pathogenic Bacteroides and Clostridium, suggesting that LA might modulate intestinal health, as confirmed by the proposed method.
Collapse
Affiliation(s)
- Miki Matsue
- Department of Clinical Laboratory Sciences, Faculty of Health Sciences, Institute of Medical, Pharmaceutical, and Health Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Yumiko Mori
- Department of Clinical Laboratory Sciences, Faculty of Health Sciences, Institute of Medical, Pharmaceutical, and Health Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Satoshi Nagase
- Department of Clinical Laboratory Sciences, Faculty of Health Sciences, Institute of Medical, Pharmaceutical, and Health Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Yuta Sugiyama
- Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, Nonoichi, Ishikawa, Japan
| | - Rika Hirano
- Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, Nonoichi, Ishikawa, Japan
| | - Kazuhiro Ogai
- Department of Clinical Nursing, Faculty of Health Sciences, Institute of Medical, Pharmaceutical, and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Kohei Ogura
- Advanced Health Care Science Research Unit, Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Japan
| | - Shin Kurihara
- Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, Nonoichi, Ishikawa, Japan
| | - Shigefumi Okamoto
- Department of Clinical Laboratory Sciences, Faculty of Health Sciences, Institute of Medical, Pharmaceutical, and Health Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
| |
Collapse
|
36
|
Ogura K, Imagumbai T, Kosaka Y, Hattori T, Hiraoka S, Ogata T, Kokubo M. Outcomes of Radiotherapy for Brain Metastases Patients without Active Extracranial Disease. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.2353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
37
|
Ogata T, Kosaka Y, Imagumbai T, Ogura K, Hattori T, Hiraoka S, Kokubo M. Outcome of Stereotactic Body Radiotherapy for Patients with Histologically Proven Stage I Non-Small-Cell Lung Cancer. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.2422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
38
|
Uto M, Ogura K, Katagiri T, Takehana K, Mizowaki T. Interfractional Target Volume Changes in Brain Metastases during 13-Fraction Stereotactic Radiotherapy. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.2270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
39
|
Yahiro K, Ogura K, Terasaki Y, Satoh M, Miyagi S, Terasaki M, Yamasaki E, Moss J. Cholix toxin, an eukaryotic elongation factor 2 ADP-ribosyltransferase, interacts with Prohibitins and induces apoptosis with mitochondrial dysfunction in human hepatocytes. Cell Microbiol 2019; 21:e13033. [PMID: 31009148 PMCID: PMC9986844 DOI: 10.1111/cmi.13033] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [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: 11/26/2018] [Accepted: 04/16/2019] [Indexed: 12/12/2022]
Abstract
Vibrio cholerae produced-Cholix toxin (Cholix) is a cytotoxin that ADP-ribosylates eukaryotic elongation factor 2, inhibiting protein synthesis, and inducing apoptosis. Here, we identified prohibitin (PHB) 1 and 2 as novel Cholix-interacting membrane proteins in immortalised human hepatocytes and HepG2 cells by Cholix immunoprecipitation assays. The expression level of PHB1 was decreased by Cholix after a 12hr incubation. Cholix-induced poly (ADP-ribose) polymerase (PARP) cleavage was significantly enhanced in PHB (PHB1 or PHB2) knockdown cells. In contrast, transiently overexpressed PHB in hepatocytes attenuated Cholix-induced Bax/Bak conformational changes and PARP cleavage. In addition, Cholix-induced reactive oxygen species production and accumulation of fragmented mitochondria were enhanced in PHB-knockdown cells. Furthermore, Cholix induced activation of Rho-associated coiled coil-containing protein kinase 1 (ROCK1), which was enhanced in PHB-knockdown cells, followed by actin filament depolymerisation and accumulation of tubulin in the blebbing cells. Inhibition of ROCK1 by siRNA or its inhibitor suppressed Cholix-induced PARP cleavage and reactive oxygen species generation. Our findings identify PHB as a new protein that interacts with Cholix and is involved in Cholix-induced mitochondrial dysfunction and cytoskeletal rearrangement by ROCK1 activation during apoptosis.
Collapse
Affiliation(s)
- Kinnosuke Yahiro
- Department of Molecular Infectiology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Kohei Ogura
- Advanced Health Care Science Research Unit, Institute for Frontier Science Initiative, Kanazawa University, Kanazawa, Japan
| | - Yasuhiro Terasaki
- Department of Analytic Human Pathology, Nippon Medical School, Tokyo, Japan
| | - Mamoru Satoh
- Division of Clinical Mass Spectrometry, Chiba University Hospital, Chiba, Japan
| | - Satoru Miyagi
- Department of Life Science, Faculty of Medicine, Shimane University, Izumo, Japan
| | - Mika Terasaki
- Department of Analytic Human Pathology, Nippon Medical School, Tokyo, Japan
| | - Eiki Yamasaki
- Diagnostic Center for Animal Health and Food Safety, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido, Japan
| | - Joel Moss
- Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA
| |
Collapse
|
40
|
Toki S, Kobayashi E, Yoshida A, Ogura K, Wakai S, Yoshimoto S, Yonemori K, Kawai A. A clinical comparison between dedifferentiated low-grade osteosarcoma and conventional osteosarcoma. Bone Joint J 2019; 101-B:745-752. [PMID: 31154837 DOI: 10.1302/0301-620x.101b6.bjj-2018-1207.r1] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
AIMS The purpose of this study was to clarify the clinical behaviour, prognosis, and optimum treatment of dedifferentiated low-grade osteosarcoma (DLOS) diagnosed based on molecular pathology. PATIENTS AND METHODS We retrospectively reviewed 13 DLOS patients (six men, seven women; median age 32 years (interquartile range (IQR) 27 to 38)) diagnosed using the following criteria: the histological coexistence of low-grade and high-grade osteosarcoma components in the lesion, and positive immunohistochemistry of mouse double minute 2 homolog (MDM2) and cyclin-dependent kinase 4 (CDK4) associated with MDM2 amplification. These patients were then compared with 51 age-matched consecutive conventional osteosarcoma (COS) patients (33 men, 18 women; median age 25 years (IQR 20 to 38)) regarding their clinicopathological features. RESULTS The five-year overall survival (OAS) rates in the DLOS and COS patients were 85.7% and 77.1% (p = 0.728), respectively, and the five-year progression-free survival (PFS) rates were 57.7% and 44.9% (p = 0.368), respectively. A total of 12 DLOS patients received chemotherapy largely according to regimens for COS. Among the nine cases with a histological evaluation after chemotherapy, eight showed a poor response, and seven of these had a necrosis rate of < 50%. One DLOS patient developed local recurrence and five developed distant metastases. CONCLUSION Based on our study of 13 DLOS cases that were strictly defined by histological and molecular means, DLOS showed a poorer response to a standard chemotherapy regimen than COS, while the clinical outcomes were not markedly different. Cite this article: Bone Joint J 2019;101-B:745-752.
Collapse
Affiliation(s)
- S Toki
- Department of Musculoskeletal Oncology, National Cancer Center Hospital, Tokyo, Japan; Department of Pathology and Clinical Laboratories, National Cancer Center Hospital, Tokyo, Japan; Rare Cancer Center, National Cancer Center Hospital, Tokyo, Japan
| | - E Kobayashi
- Department of Musculoskeletal Oncology, National Cancer Center Hospital, Tokyo, Japan; Rare Cancer Center, National Cancer Center Hospital, Tokyo, Japan
| | - A Yoshida
- Department of Pathology and Clinical Laboratories, National Cancer Center Hospital, Tokyo, Japan; Rare Cancer Center, National Cancer Center Hospital, Tokyo, Japan
| | - K Ogura
- Department of Musculoskeletal Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - S Wakai
- Department of Pathology and Clinical Laboratories, National Cancer Center Hospital, Tokyo, Japan
| | - S Yoshimoto
- Department of Head and Neck Surgery, National Cancer Center Hospital, Tokyo, Japan
| | - K Yonemori
- Department of Breast and Medical Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - A Kawai
- Department of Musculoskeletal Oncology, National Cancer Center Hospital, Tokyo, Japan; Rare Cancer Center, National Cancer Center Hospital, Tokyo, Japan
| |
Collapse
|
41
|
Takehana K, Uto M, Ogura K, Arakawa Y, Mineharu Y, Mizowaki T. EP-1219 Prognostic factors of salvage stereotactic radiotherapy for recurrent high-grade glioma. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)31639-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
42
|
Jibiki N, Hirano A, Ochi T, Sakamoto A, Horiuchi K, Noguchi E, Omi Y, Ogura K, Inoue H, Kamio T, Naritaka Y, Fujibayashi M, Hiroshima K, Nagashima Y, Sakai S, Karasawa K, Okamoto T. Abstract OT2-02-01: A confirmation study of omitting axillary dissection in patients with breast cancer and positive sentinel nodes. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-ot2-02-01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background
The omission of axillary dissection for positive sentinel-node breast cancer is considered the standard treatment for patients who undergo breast conserving surgery and radiation therapy, according to the results of ACOSOG-Z0011 and AMAROS trials. On the other hand, some surgeons still think that the surgical stress of axillary dissection is minimal, and dissection is permitted. Furthermore, Z0011 contains several problems, such as insufficient number of entry cases and lack of radiation field unity. Thus, we planned a prospective trial to confirm the safety of omitting axillary dissection in patients with breast cancer and positive sentinel nodes.
Trial design
This is a single arm, confirmation study of three medical centers. Prior to surgery, informed consent is obtained, and patients are registered primarily. After surgery, patients with 1 to 2 positive sentinel nodes, for whom axillary dissection was omitted, are finally included in this trial at final registration.
Eligibility criteria
Patients with histologically-diagnosed breast cancer, Tis–2, N0 based on a core needle biopsy, will be included in this trial. Eligible patients must be between 20 and 80 years of age, with a performance status of 0–2 and adequate organ function. They must not have undergone any prior operation, radiation therapy, chemotherapy, endocrine therapy, or immunotherapy.
Specific aims
The primary endpoint is 5-year (y) axillary recurrence rate. Secondary endpoints are 5-y overall survival, 5-y recurrence-free survival, 5-y local recurrence-free survival, the rate of upper-limb lymphedema, quality of life, and comparison of axillary recurrence rates between patients with two or more dissected nodes and those with only one positive node.
Statistical methods
The expected rate of axillary recurrence is 2.0%, and non-inferiority is defined as an axillary recurrence lesser than or equal to 5% in the axillary radiotherapy group. The sample size was calculated with a study power of 80% and type I error of 10% (two-sided). The required number of patients is estimated to be 189.
Present and target accrual
Patient accrual from the three medical centers was initiated in July 2016. We plan to enroll a total of 189 patients at final registration in this trial.
Citation Format: Jibiki N, Hirano A, Ochi T, Sakamoto A, Horiuchi K, Noguchi E, Omi Y, Ogura K, Inoue H, Kamio T, Naritaka Y, Fujibayashi M, Hiroshima K, Nagashima Y, Sakai S, Karasawa K, Okamoto T. A confirmation study of omitting axillary dissection in patients with breast cancer and positive sentinel nodes [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr OT2-02-01.
Collapse
Affiliation(s)
- N Jibiki
- Tokyo Women's Medical University Yachiyo Medical Center, Yachiyo, Japan; Tokyo Women's Medical University Medical Center East, Tokyo, Japan; Tokyo Women's Medical University Hospital, Tokyo, Japan
| | - A Hirano
- Tokyo Women's Medical University Yachiyo Medical Center, Yachiyo, Japan; Tokyo Women's Medical University Medical Center East, Tokyo, Japan; Tokyo Women's Medical University Hospital, Tokyo, Japan
| | - T Ochi
- Tokyo Women's Medical University Yachiyo Medical Center, Yachiyo, Japan; Tokyo Women's Medical University Medical Center East, Tokyo, Japan; Tokyo Women's Medical University Hospital, Tokyo, Japan
| | - A Sakamoto
- Tokyo Women's Medical University Yachiyo Medical Center, Yachiyo, Japan; Tokyo Women's Medical University Medical Center East, Tokyo, Japan; Tokyo Women's Medical University Hospital, Tokyo, Japan
| | - K Horiuchi
- Tokyo Women's Medical University Yachiyo Medical Center, Yachiyo, Japan; Tokyo Women's Medical University Medical Center East, Tokyo, Japan; Tokyo Women's Medical University Hospital, Tokyo, Japan
| | - E Noguchi
- Tokyo Women's Medical University Yachiyo Medical Center, Yachiyo, Japan; Tokyo Women's Medical University Medical Center East, Tokyo, Japan; Tokyo Women's Medical University Hospital, Tokyo, Japan
| | - Y Omi
- Tokyo Women's Medical University Yachiyo Medical Center, Yachiyo, Japan; Tokyo Women's Medical University Medical Center East, Tokyo, Japan; Tokyo Women's Medical University Hospital, Tokyo, Japan
| | - K Ogura
- Tokyo Women's Medical University Yachiyo Medical Center, Yachiyo, Japan; Tokyo Women's Medical University Medical Center East, Tokyo, Japan; Tokyo Women's Medical University Hospital, Tokyo, Japan
| | - H Inoue
- Tokyo Women's Medical University Yachiyo Medical Center, Yachiyo, Japan; Tokyo Women's Medical University Medical Center East, Tokyo, Japan; Tokyo Women's Medical University Hospital, Tokyo, Japan
| | - T Kamio
- Tokyo Women's Medical University Yachiyo Medical Center, Yachiyo, Japan; Tokyo Women's Medical University Medical Center East, Tokyo, Japan; Tokyo Women's Medical University Hospital, Tokyo, Japan
| | - Y Naritaka
- Tokyo Women's Medical University Yachiyo Medical Center, Yachiyo, Japan; Tokyo Women's Medical University Medical Center East, Tokyo, Japan; Tokyo Women's Medical University Hospital, Tokyo, Japan
| | - M Fujibayashi
- Tokyo Women's Medical University Yachiyo Medical Center, Yachiyo, Japan; Tokyo Women's Medical University Medical Center East, Tokyo, Japan; Tokyo Women's Medical University Hospital, Tokyo, Japan
| | - K Hiroshima
- Tokyo Women's Medical University Yachiyo Medical Center, Yachiyo, Japan; Tokyo Women's Medical University Medical Center East, Tokyo, Japan; Tokyo Women's Medical University Hospital, Tokyo, Japan
| | - Y Nagashima
- Tokyo Women's Medical University Yachiyo Medical Center, Yachiyo, Japan; Tokyo Women's Medical University Medical Center East, Tokyo, Japan; Tokyo Women's Medical University Hospital, Tokyo, Japan
| | - S Sakai
- Tokyo Women's Medical University Yachiyo Medical Center, Yachiyo, Japan; Tokyo Women's Medical University Medical Center East, Tokyo, Japan; Tokyo Women's Medical University Hospital, Tokyo, Japan
| | - K Karasawa
- Tokyo Women's Medical University Yachiyo Medical Center, Yachiyo, Japan; Tokyo Women's Medical University Medical Center East, Tokyo, Japan; Tokyo Women's Medical University Hospital, Tokyo, Japan
| | - T Okamoto
- Tokyo Women's Medical University Yachiyo Medical Center, Yachiyo, Japan; Tokyo Women's Medical University Medical Center East, Tokyo, Japan; Tokyo Women's Medical University Hospital, Tokyo, Japan
| |
Collapse
|
43
|
Kodera A, Ogura K, Hattori A, Yukawa H, Sakaguchi S, Matsuoka A, Tanaka N, Kamimura M, Jibiki N, Naritaka Y, Hirano A. Abstract OT1-05-03: Efficacy and safety of scalp cooling device for prevention of alopecia in patients with breast cancer. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-ot1-05-03] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background
Chemotherapy for breast cancer causes alopecia as a side effect. Some patients refuse chemotherapy because of alopecia, resulting in the omission of a standard therapy. It is believed that a scalp cooling device can prevent alopecia by promoting vasoconstriction of the scalp and reducing exposure of the hair root cells to anticancer agents. There are phenotypic differences of the efficacy of a scalp cooling device for alopecia. In fact, a Dutch scalp cooling registry reported that the success rate of scalp cooling was 51% in European women and 33% in Asian women. Therefore, we aimed to investigate the efficacy of scalp cooling device for chemotherapy-induced alopecia among Asian women with breast cancer.
Trial design
This is a phase II trialto evaluate the efficacy and safety of scalp cooling device for risk reduction of alopecia in women with stage I/II/III breast cancer treated with adjuvant/neoadjuvant chemotherapy in a single institute.
Eligibility criteria
Women diagnosed with Stage I to III breast cancer who are scheduled to receive preoperative or postoperative adjuvant chemotherapy containing anthracycline and/or taxanes are enrolled. Patients who have blood malignancies (leukemia, non-Hodgkin lymphoma, other systemic lymphoma), and cold allergy, are excluded.
Specific aims
The primary endpoint is the proportion of patients with Common Terminology Criteria for Adverse Events (CTCAE) grade 0-1 alopecia after the completion of all cycles of chemotherapy (success rate). Secondary endpoints are safety, quality of life, use of wig or cap, and success rates after the completion of all cycles of chemotherapy distinguished by anthracycline(AC) and taxane.
The cooling device is the Paxman scalp cooling system. Scalp cooling was performed from 30 mins before initiation until 90 mins (25 min for taxane) after chemotherapy. Pictures of the scalp were taken at the time of the initiation of each course.
Statistical methods
Successful treatment was defined as the presence of less than 50% of hair-loss area. The sample size was calculated using the Simon method, with a type I error of 10% (two-sided) and a study power of 80%.The expected success rate is 30%, with a threshold success rate of 10%, and the required number of patients was estimated to be 19.
Present and target accrual
Patient accrual was started in April 2018 and present accrual is 3. We plan to enroll a total of 20 patients in the trial.
Citation Format: Kodera A, Ogura K, Hattori A, Yukawa H, Sakaguchi S, Matsuoka A, Tanaka N, Kamimura M, Jibiki N, Naritaka Y, Hirano A. Efficacy and safety of scalp cooling device for prevention of alopecia in patients with breast cancer [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr OT1-05-03.
Collapse
Affiliation(s)
- A Kodera
- Tokyo Women's Medical Univercity Medical Center East, Tokyo, Japan; Tokyo Women's Medical Univercity Yachiyo Medical Center, Chiba, Japan
| | - K Ogura
- Tokyo Women's Medical Univercity Medical Center East, Tokyo, Japan; Tokyo Women's Medical Univercity Yachiyo Medical Center, Chiba, Japan
| | - A Hattori
- Tokyo Women's Medical Univercity Medical Center East, Tokyo, Japan; Tokyo Women's Medical Univercity Yachiyo Medical Center, Chiba, Japan
| | - H Yukawa
- Tokyo Women's Medical Univercity Medical Center East, Tokyo, Japan; Tokyo Women's Medical Univercity Yachiyo Medical Center, Chiba, Japan
| | - S Sakaguchi
- Tokyo Women's Medical Univercity Medical Center East, Tokyo, Japan; Tokyo Women's Medical Univercity Yachiyo Medical Center, Chiba, Japan
| | - A Matsuoka
- Tokyo Women's Medical Univercity Medical Center East, Tokyo, Japan; Tokyo Women's Medical Univercity Yachiyo Medical Center, Chiba, Japan
| | - N Tanaka
- Tokyo Women's Medical Univercity Medical Center East, Tokyo, Japan; Tokyo Women's Medical Univercity Yachiyo Medical Center, Chiba, Japan
| | - M Kamimura
- Tokyo Women's Medical Univercity Medical Center East, Tokyo, Japan; Tokyo Women's Medical Univercity Yachiyo Medical Center, Chiba, Japan
| | - N Jibiki
- Tokyo Women's Medical Univercity Medical Center East, Tokyo, Japan; Tokyo Women's Medical Univercity Yachiyo Medical Center, Chiba, Japan
| | - Y Naritaka
- Tokyo Women's Medical Univercity Medical Center East, Tokyo, Japan; Tokyo Women's Medical Univercity Yachiyo Medical Center, Chiba, Japan
| | - A Hirano
- Tokyo Women's Medical Univercity Medical Center East, Tokyo, Japan; Tokyo Women's Medical Univercity Yachiyo Medical Center, Chiba, Japan
| |
Collapse
|
44
|
Uto M, Katagiri T, Takehana K, Ogura K, Mizowaki T. P2.01-98 Single-Isocenter Volumetric-Modulated Arc Radiosurgery for Non-Small-Cell Lung Cancer Patients with Multiple Brain Metastases. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
45
|
Ogura K, Okumura K, Shimizu Y, Kirikae T, Miyoshi-Akiyama T. Pathogenicity Induced by Invasive Infection of Streptococcus dysgalactiae subsp. equisimilis in a Mouse Model of Diabetes. Front Microbiol 2018; 9:2128. [PMID: 30298057 PMCID: PMC6160533 DOI: 10.3389/fmicb.2018.02128] [Citation(s) in RCA: 4] [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: 06/01/2018] [Accepted: 08/20/2018] [Indexed: 11/13/2022] Open
Abstract
Streptococcus dysgalactiae subsp. equisimilis (SDSE) causes severe invasive diseases such as streptococcal toxic shock syndrome, similar to that caused by S. pyogenes (GAS). Invasive SDSE infections are increasing, particularly among patients with diabetes mellitus. Here we investigate the association between the pathogenicity of SDSE and diabetes mellitus in a mouse model, using GAS infection for comparison. Intraperitoneal injection of highly hemolytic SDSE-167 into C57BL6/J mice induced a rapid rise in blood glucose concentrations within 4 h, which was otherwise seen only in mice injected with high doses of hypervirulent GAS mutants. The survival rates of mice injected with SDSE-167 were significantly lower in mice (db/db) with type 2 diabetes than in nondiabetic mice. Injection of db/db mice with SDSE-167 increased the concentrations of cytokines and chemokines, particularly those of interleukin 6 and monocyte chemotactic protein-1. Microarray data indicate that multiple pathways are involved in the pathogenicity of SDSE-167 in db/db mice. These data reveal that the mechanisms underlying streptococcal infection differ between SDSE and GAS.
Collapse
Affiliation(s)
- Kohei Ogura
- Pathogenic Microbe Laboratory, Research Institute, National Center for Global Health and Medicine, Tokyo, Japan.,Advanced Health Care Science Research Unit, Institute for Frontier Science Initiative, Ishikawa, Japan
| | - Kayo Okumura
- Department of Infectious Disease, Research Institute, National Center for Global Health and Medicine, Tokyo, Japan
| | - Yukiko Shimizu
- Department of Infectious Disease, Research Institute, National Center for Global Health and Medicine, Tokyo, Japan
| | - Teruo Kirikae
- Department of Infectious Disease, Research Institute, National Center for Global Health and Medicine, Tokyo, Japan.,Department of Microbiology, Juntendo University School of Medicine, Tokyo, Japan
| | - Tohru Miyoshi-Akiyama
- Pathogenic Microbe Laboratory, Research Institute, National Center for Global Health and Medicine, Tokyo, Japan
| |
Collapse
|
46
|
Yahiro K, Nagasawa S, Ichimura K, Takeuchi H, Ogura K, Tsutsuki H, Shimizu T, Iyoda S, Ohnishi M, Iwase H, Moss J, Noda M. Mechanism of inhibition of Shiga-toxigenic Escherichia coli SubAB cytotoxicity by steroids and diacylglycerol analogues. Cell Death Discov 2018. [PMID: 29531819 PMCID: PMC5841432 DOI: 10.1038/s41420-017-0007-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [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] [Indexed: 02/06/2023] Open
Abstract
Shiga toxigenic Escherichia coli (STEC) are responsible for a worldwide foodborne disease, which is characterized by severe bloody diarrhea and hemolytic uremic syndrome (HUS). Subtilase cytotoxin (SubAB) is a novel AB5 toxin, which is produced by Locus for Enterocyte Effacement (LEE)-negative STEC. Cleavage of the BiP protein by SubAB induces endoplasmic reticulum (ER) stress, followed by induction of cytotoxicity in vitro or lethal severe hemorrhagic inflammation in mice. Here we found that steroids and diacylglycerol (DAG) analogues (e.g., bryostatin 1, Ingenol-3-angelate) inhibited SubAB cytotoxicity. In addition, steroid-induced Bcl-xL expression was a key step in the inhibition of SubAB cytotoxicity. Bcl-xL knockdown increased SubAB-induced apoptosis in steroid-treated HeLa cells, whereas SubAB-induced cytotoxicity was suppressed in Bcl-xL overexpressing cells. In contrast, DAG analogues suppressed SubAB activity independent of Bcl-xL expression at early time points. Addition of Shiga toxin 2 (Stx2) with SubAB to cells enhanced cytotoxicity even in the presence of steroids. In contrast, DAG analogues suppressed cytotoxicity seen in the presence of both toxins. Here, we show the mechanism by which steroids and DAG analogues protect cells against SubAB toxin produced by LEE-negative STEC.
Collapse
Affiliation(s)
- Kinnosuke Yahiro
- 1Department of Molecular Infectiology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Sayaka Nagasawa
- 2Department of Legal Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Kimitoshi Ichimura
- 1Department of Molecular Infectiology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Hiroki Takeuchi
- 1Department of Molecular Infectiology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Kohei Ogura
- 3Pathogenic Microbe Laboratory, Research Institute, National Center for Global Health and Medicine, Tokyo, Japan
| | - Hiroyasu Tsutsuki
- 4Department of Microbiology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Takeshi Shimizu
- 1Department of Molecular Infectiology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Sunao Iyoda
- 5Department of Bacteriology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Makoto Ohnishi
- 5Department of Bacteriology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Hirotaro Iwase
- 2Department of Legal Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Joel Moss
- 6Cardiovascular and Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD USA
| | - Masatoshi Noda
- 1Department of Molecular Infectiology, Graduate School of Medicine, Chiba University, Chiba, Japan
| |
Collapse
|
47
|
Ogura K, Terasaki Y, Miyoshi-Akiyama T, Terasaki M, Moss J, Noda M, Yahiro K. Vibrio cholerae Cholix Toxin-Induced HepG2 Cell Death is Enhanced by Tumor Necrosis Factor-Alpha Through ROS and Intracellular Signal-Regulated Kinases. Toxicol Sci 2018; 156:455-468. [PMID: 28087840 DOI: 10.1093/toxsci/kfx009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Cholix toxin (Cholix) from Vibrio cholerae is a potent virulence factor exhibiting ADP-ribosyltransferase activity on eukaryotic elongation factor 2 (eEF2) of host cells, resulting in the inhibition of protein synthesis. Administration of Cholix or its homologue Pseudomonas exotoxin A (PEA) to mice causes lethal hepatocyte damage. In this study, we demonstrate cytotoxicity of Cholix on human hepatocytes in the presence of tumor necrosis factor α (TNF-α), which has been reported to play a fatal role in PEA administered to mice. Compared with incubating HepG2 cells with Cholix alone, co-treatment with TNF-α and Cholix (TNF-α/Cholix) significantly enhanced the activation of caspases, cytochrome c release from mitochondria into cytoplasm, and poly-ADP-ribose polymerase (PARP) cleavage, while incubation with TNF-α alone or co-treatment with TNF-α/catalytically inactive Cholix did not. In the early stage of cell death, Cholix increased phosphorylation of mitogen-activated protein kinases (e.g., p38, ERK, JNK) and Akt, which was not affected by TNF-α alone. MAPK inhibitors (SP600125, SB20852, and U0126) suppressed PARP cleavage induced by TNF-α/Cholix. Protein kinase inhibitor Go6976 suppressed JNK phosphorylation and PARP cleavage by TNF-α/Cholix. In contrast, PKC activator PMA in the absence of TNF-α promoted Cholix-induced PARP cleavage. Reactive oxygen species (ROS) inhibitor, N-acetyl cysteine (NAC), suppressed TNF-α/Cholix-induced JNK and ERK phosphorylation, resulting in inhibition of PARP cleavage. These data suggest that ROS and JNK pathways are important mediators of TNF-α/Cholix-induced HepG2 cell death.
Collapse
Affiliation(s)
- Kohei Ogura
- Department of Molecular Infectiology, Graduate School of Medicine, Chiba University, Chiba, Japan.,Pathogenic Microbe Laboratory, Research Institute, National Center for Global Health and Medicine, Tokyo, Japan
| | - Yasuhiro Terasaki
- Department of Analytic Human Pathology, Nippon Medical School, Tokyo, Japan
| | - Tohru Miyoshi-Akiyama
- Pathogenic Microbe Laboratory, Research Institute, National Center for Global Health and Medicine, Tokyo, Japan
| | - Mika Terasaki
- Department of Analytic Human Pathology, Nippon Medical School, Tokyo, Japan
| | - Joel Moss
- Cardiovascular and Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland 20892-1590
| | - Masatoshi Noda
- Department of Molecular Infectiology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Kinnosuke Yahiro
- Department of Molecular Infectiology, Graduate School of Medicine, Chiba University, Chiba, Japan
| |
Collapse
|
48
|
Kiuchi Y, Tanaka H, Ogura K, Watanabe O, Cho T, Amin MR. Slow Cyclotron and Cherenkov Instabilities in Weakly Relativistic Oversized Backward Wave Oscillator. Fusion Science and Technology 2017. [DOI: 10.13182/fst07-a1392] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Y. Kiuchi
- Graduate School of Science and Technology, Niigata University, Niigata, 950-2181, Japan
| | - H. Tanaka
- Graduate School of Science and Technology, Niigata University, Niigata, 950-2181, Japan
| | - K. Ogura
- Graduate School of Science and Technology, Niigata University, Niigata, 950-2181, Japan
| | - O. Watanabe
- Plasma Research Center, University of Tsukuba, Tsukuba, 305-8577, Japan
| | - T. Cho
- Plasma Research Center, University of Tsukuba, Tsukuba, 305-8577, Japan
| | - Md. R. Amin
- Electrical and Electronic Engineering Department, Rajshahi University of Engineering & Technology, Rajshahi-6204, Bangladesh
| |
Collapse
|
49
|
Cho T, Higaki H, Hirata M, Hojo H, Ichimura M, Ishii K, Islam K, Itakura A, Katanuma I, Kohagura J, Minami R, Nakashima Y, Numakura T, Saito T, Tatematsu Y, Yoshikawa M, Watanabe O, Kubota Y, Kobayashi T, Yamaguchi Y, Saimaru H, Higashizono Y, Miyata Y, Kiminami S, Shimizu K, Itou M, Ikuno T, Mase A, Yasaka Y, Sakamoto K, Yoshida M, Kojima A, Ogura K, Nishino N, Horton W, Kariya T, Imai T, Pastukhov V, Miyoshi S. Overview of Recent Progress in the GAMMA 10 Tandem Mirror. Fusion Science and Technology 2017. [DOI: 10.13182/fst07-a1305] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- T. Cho
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - H. Higaki
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - M. Hirata
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - H. Hojo
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - M. Ichimura
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - K. Ishii
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - K. Islam
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - A. Itakura
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - I. Katanuma
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - J. Kohagura
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - R. Minami
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - Y. Nakashima
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - T. Numakura
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - T. Saito
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - Y. Tatematsu
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - M. Yoshikawa
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - O. Watanabe
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - Y. Kubota
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - T. Kobayashi
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - Y. Yamaguchi
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - H. Saimaru
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - Y. Higashizono
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - Y. Miyata
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - S. Kiminami
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - K. Shimizu
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - M. Itou
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - T. Ikuno
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - A. Mase
- Art, Science and Technology Center for Cooperative Research, Kyushu University, Japan
| | - Y. Yasaka
- Department of Electrical and Electronics Engineering, Kobe University, Japan
| | - K. Sakamoto
- Naka Fusion Research Establishment, Japan Atomic Energy Agency, Japan
| | - M. Yoshida
- Naka Fusion Research Establishment, Japan Atomic Energy Agency, Japan
| | - A. Kojima
- Naka Fusion Research Establishment, Japan Atomic Energy Agency, Japan
| | - K. Ogura
- Graduate School of Science and Technology, Niigata University, Japan
| | - N. Nishino
- Graduated School of Engineering, Hiroshima University, Japan
| | - W. Horton
- Institute for Fusion Studies, The University of Texas at Austin, USA
| | - T. Kariya
- Toshiba Electron Tubes and Devices Co. Ltd., Tochigi, Japan
| | - T. Imai
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | - V.P. Pastukhov
- Russian Research Center “Kurchatov Institute”, Moscow, Russia Kurchatov Institute, Russia
| | - S. Miyoshi
- Plasma Research Center, University of Tsukuba, Ibaraki, Japan
| | | |
Collapse
|
50
|
Aoyama S, Miyazawa Y, Ogura K, Sugawara A, Hirata M. Improved Performance of Oversized Backward Wave Oscillator Driven by Weakly Relativistic Electron Beam. Fusion Science and Technology 2017. [DOI: 10.13182/fst07-a1390] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- S. Aoyama
- Graduate School of Science and Technology, Niigata University, Niigata, 950-2181, Japan
| | - Y. Miyazawa
- Graduate School of Science and Technology, Niigata University, Niigata, 950-2181, Japan
| | - K. Ogura
- Graduate School of Science and Technology, Niigata University, Niigata, 950-2181, Japan
| | - A. Sugawara
- Graduate School of Science and Technology, Niigata University, Niigata, 950-2181, Japan
| | - M. Hirata
- Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan
| |
Collapse
|