1
|
Kikuchi K, Miyauchi R, Yamaguchi T, Sugiura H, Nogami T, Inoue Y, Sato H, Sato H, Fujiwara N, Maeda S. An Experimental Study on the Addition of Bacteria to Residual Anticancer Drugs: Evaluation of the Effect on Bacterial Growth. Jpn J Infect Dis 2024; 77:61-67. [PMID: 37914291 DOI: 10.7883/yoken.jjid.2023.270] [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] [Indexed: 11/03/2023]
Abstract
Using anticancer drugs as examples, we examined the possibility of reusing residual drugs. The use of residual drugs is not widespread owing to concerns regarding bacterial contamination. We combined anticancer drugs and bacteria to investigate their effects on bacterial growth. The anticancer drugs carboplatin, paclitaxel, etoposide, irinotecan, methotrexate, and 5-fluorouracil (5-FU) were mixed with Staphylococcus aureus, Enterococcus faecalis, Serratia marcescens, and Escherichia coli. After a certain period, the bacteria were counted. Irinotecan showed no antibacterial activity, whereas 5-FU exhibited high antibacterial activity against the tested bacteria. The 5-FU also showed a minimum inhibitory concentration value in the range of 8-80 μg/mL, depending on the bacterial species. 5-FU dose-dependently inhibited S. aureus growth at more than 0.8 µg/mL. Because protein synthesis systems are reportedly antibiotic targets, we used a cell-free protein synthesis system to confirm the mechanism of the antibacterial activity of the anticancer agent. 5-FU and methotrexate had direct inhibitory effects on protein synthesis. It has been suggested that even if residual drugs are contaminated with bacteria, there will be no microbial growth, or the microbes will be killed by the drug. With careful monitoring, 5-FU can potentially be used for antimicrobial purposes.
Collapse
Affiliation(s)
- Ken Kikuchi
- Department of Pharmacy, Public Interest Association of Medical Service for Workers, Kin-ikyo Chuo Hospital, Japan
| | - Rei Miyauchi
- Faculty of Pharmaceutical Sciences, Hokkaido University of Science, Japan
| | - Tomoya Yamaguchi
- Faculty of Pharmaceutical Sciences, Hokkaido University of Science, Japan
| | - Hayato Sugiura
- Faculty of Pharmaceutical Sciences, Hokkaido University of Science, Japan
| | - Taishi Nogami
- Faculty of Pharmaceutical Sciences, Hokkaido University of Science, Japan
| | - Yuki Inoue
- Faculty of Pharmaceutical Sciences, Hokkaido University of Science, Japan
| | - Haruna Sato
- Faculty of Pharmaceutical Sciences, Hokkaido University of Science, Japan
| | - Hideki Sato
- Faculty of Pharmaceutical Sciences, Hokkaido University of Science, Japan
| | - Nagatoshi Fujiwara
- Department of Food and Nutrition, Faculty of Contemporary Human Life Science, Tezukayama University, Japan
| | - Shinji Maeda
- Faculty of Pharmaceutical Sciences, Hokkaido University of Science, Japan
| |
Collapse
|
2
|
Takahashi A, Honda Y, Tanaka N, Miyake J, Maeda S, Kataoka H, Sakamoto J, Okita M. Skeletal Muscle Electrical Stimulation Prevents Progression of Disuse Muscle Atrophy via Forkhead Box O Dynamics Mediated by Phosphorylated Protein Kinase B and Peroxisome Proliferator-Activated Receptor gamma Coactivator-1alpha. Physiol Res 2024; 73:105-115. [PMID: 38466009 PMCID: PMC11019614 DOI: 10.33549/physiolres.935157] [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: 06/11/2023] [Accepted: 10/12/2023] [Indexed: 04/26/2024] Open
Abstract
Although electrical muscle stimulation (EMS) of skeletal muscle effectively prevents muscle atrophy, its effect on the breakdown of muscle component proteins is unknown. In this study, we investigated the biological mechanisms by which EMS-induced muscle contraction inhibits disuse muscle atrophy progression. Experimental animals were divided into a control group and three experimental groups: immobilized (Im; immobilization treatment), low-frequency (LF; immobilization treatment and low-frequency muscle contraction exercise), and high-frequency (HF; immobilization treatment and high-frequency muscle contraction exercise). Following the experimental period, bilateral soleus muscles were collected and analyzed. Atrogin-1 and Muscle RING finger 1 (MuRF-1) mRNA expression levels were significantly higher for the experimental groups than for the control group but were significantly lower for the HF group than for the Im group. Peroxisome proliferator-activated receptor gamma coactivator-1alpha (PGC-1alpha) mRNA and protein expression levels in the HF group were significantly higher than those in the Im group, with no significant differences compared to the Con group. Both the Forkhead box O (FoxO)/phosphorylated FoxO and protein kinase B (AKT)/phosphorylated AKT ratios were significantly lower for the Im group than for the control group and significantly higher for the HF group than for the Im group. These results, the suppression of atrogin-1 and MuRF-1 expression for the HF group may be due to decreased nuclear expression of FoxO by AKT phosphorylation and suppression of FoxO transcriptional activity by PGC-1alpha. Furthermore, the number of muscle contractions might be important for effective EMS.
Collapse
Affiliation(s)
- A Takahashi
- Institute of Biomedical Sciences (Health Sciences), Nagasaki University, Nagasaki, Japan.
| | | | | | | | | | | | | | | |
Collapse
|
3
|
Ohta K, Fujiki T, Yokoyama T, Maeda S, Inoue M, Sakazume S. Normal values for pediatric urinary biochemistry in early infancy. Ir J Med Sci 2023; 192:2507-2511. [PMID: 36735190 DOI: 10.1007/s11845-023-03296-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Accepted: 01/25/2023] [Indexed: 02/04/2023]
Abstract
BACKGROUND Urinary levels of N-acetyl-β-D-glucosaminidase (NAG), α1-microglobulin (α1-MG), and β2-microglobulin (β2-MG) are measured as markers of renal tubular damage. We previously determined normal values for these urine biochemical examinations in healthy children over 3 years old. However, the values are not applicable to children younger than 2 years old, and children less than 1 year old, in particular, seem to show very high levels for all these markers. Hence, as normal values for children below 2 years old remain unclear, we determined the normal values for urinary biochemical markers in this age group. MATERIAL AND METHODS Fresh urine samples were obtained from 293 healthy children (from newborns to 2-year-old children). All the samples were subjected to normal urinalysis. NAG, α1-MG, β2-MG, and creatinine (Cr) levels in extracted samples were measured immediately in the central laboratory at Kanazawa Medical Center. RESULTS The normal values for each biomarker in children below 2 years of age were determined. Additionally, urinary α1-MG levels were observed to decrease most rapidly with age, almost reaching the level at ≥ 3 years by 6 months after birth. CONCLUSION Renal tubular function can be evaluated in children < 3 years old using the normal values. Further, the most stable and useful urinary marker from early infancy seems to be urinary α1-MG.
Collapse
Affiliation(s)
- Kazuhide Ohta
- Department of Pediatrics, Kanazawa Medical Center, National Hospital Organization, 1-1 Shimo-Ishibiki, Kanazawa, Ishikawa, 920-8650, Japan.
| | - Takuma Fujiki
- Department of Pediatrics, Kanazawa Medical University Hospital, Uchinada, Ishikawa, Japan
| | - Tadafumi Yokoyama
- Department of Pediatrics, School of Medicine, Institute of Medical, Pharmaceutical, and Health Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Shinji Maeda
- Department of Internal Medicine, Infusion and Preventive Clinic, Fukuoka, Japan
| | - Mika Inoue
- Department of Pediatrics, Kanazawa Medical Center, National Hospital Organization, 1-1 Shimo-Ishibiki, Kanazawa, Ishikawa, 920-8650, Japan
| | - Shinobu Sakazume
- Department of Pediatrics, Kanazawa Medical Center, National Hospital Organization, 1-1 Shimo-Ishibiki, Kanazawa, Ishikawa, 920-8650, Japan
| |
Collapse
|
4
|
Maeda S, Hashimoto H, Maeda T, Tamechika SY, Isogai S, Naniwa T, Niimi A. High-dimensional analysis of T-cell profiling variations following belimumab treatment in systemic lupus erythematosus. Lupus Sci Med 2023; 10:e000976. [PMID: 37802602 PMCID: PMC10565340 DOI: 10.1136/lupus-2023-000976] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Accepted: 09/06/2023] [Indexed: 10/10/2023]
Abstract
OBJECTIVE This study sought to elucidate the molecular impacts of belimumab (BEL) treatment on T-cell immune profiling in SLE. METHODS We used mass cytometry with 25 marker panels for T-cell immune profiling in peripheral blood T cells (CD3+) from 22 patients with BEL-treated SLE and 20 controls with non-BEL-treated SLE. An unsupervised machine-learning clustering, FlowSOM, was used to identify 39 T-cell clusters (TCLs; TCL01-TCL39). TCLs (% of CD3+) showing significant (p<0.05) associations with BEL treatment (BEL-TCL) were selected by a linear mixed-effects model for comparing groups of time-series data. Furthermore, we analysed the association between BEL treatment and variations in regulatory T-cell (Treg) phenotypes, and the ratio of other T-cell subsets to Treg as secondary analysis. RESULTS Clinical outcomes: BEL treatment was associated with a decrease in daily prednisolone use (coef=-0.1769, p=0.00074), and an increase in serum CH50 (coef=0.4653, p=0.003), C3 (coef=1.1047, p=0.00001) and C4 (coef=0.2990, p=0.00157) levels. Molecular effects: five distinct BEL-TCLs (TCL 04, 07, 11, 12 and 27) were identified. Among these, BEL-treated patients exhibited increased proportions in the Treg-like cluster TCL11 (coef=0.404, p=0.037) and two naïve TCLs (TCL04 and TCL07). TCL27 showed increased levels (coef=0.222, p=0.037) inversely correlating with baseline C3 levels. Secondary analyses revealed associations between BEL treatment and an increase in Tregs (coef=1.749, p=0.0044), elevated proportions of the fraction of Tregs with inhibitory function (fTregs, coef=0.7294, p=0.0178) and changes in peripheral helper T cells/fTreg (coef=-4.475, p=0.0319) and T helper 17/fTreg ratios (coef=-6.7868, p=0.0327). Additionally, BEL was linked to variations in T-cell immunoglobulin and mucin domain-containing protein-3 expression (coef=0.2422, p=0.039). CONCLUSIONS The study suggests an association between BEL treatment and variations in T cells, particularly Tregs, in SLE pathologies involving various immune cells.
Collapse
Affiliation(s)
- Shinji Maeda
- Department of Respiratory Medicine, Allergy and Clinical Immunology, Nagoya City University Graduate School of Medical Sciences and Medical School, Nagoya, Japan
| | - Hiroya Hashimoto
- Clinical Research Management Center, Nagoya City University Hospital, Nagoya, Japan
| | - Tomoyo Maeda
- Department of Respiratory Medicine, Allergy and Clinical Immunology, Nagoya City University Graduate School of Medical Sciences and Medical School, Nagoya, Japan
| | - Shin-Ya Tamechika
- Department of Respiratory Medicine, Allergy and Clinical Immunology, Nagoya City University Graduate School of Medical Sciences and Medical School, Nagoya, Japan
| | - Shuntaro Isogai
- Department of Respiratory Medicine, Allergy and Clinical Immunology, Nagoya City University Graduate School of Medical Sciences and Medical School, Nagoya, Japan
| | - Taio Naniwa
- Department of Respiratory Medicine, Allergy and Clinical Immunology, Nagoya City University Graduate School of Medical Sciences and Medical School, Nagoya, Japan
| | - Akio Niimi
- Department of Respiratory Medicine, Allergy and Clinical Immunology, Nagoya City University Graduate School of Medical Sciences and Medical School, Nagoya, Japan
| |
Collapse
|
5
|
Ijuin T, Iuchi T, Tawaratsumida H, Masuda Y, Tokushige A, Maeda S, Taniguchi N. Development of a novel animal model of rotator cuff tear arthropathy replicating clinical features of progressive osteoarthritis with subchondral bone collapse. Osteoarthr Cartil Open 2023; 5:100389. [PMID: 37560389 PMCID: PMC10407568 DOI: 10.1016/j.ocarto.2023.100389] [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: 07/18/2023] [Accepted: 07/21/2023] [Indexed: 08/11/2023] Open
Abstract
OBJECTIVE To establish an animal model of modified cuff tear arthropathy (mCTA) in order to better replicate the pathophysiology associated with rotator cuff tear-induced humeral head collapse. DESIGN mCTA was induced by transection of the rotator cuff, the long head of the biceps brachii (LHB), and superior half of the joint capsule in the right shoulder of 12-week-old rats; the left shoulder underwent sham surgery. The severity of CTA was quantitated using the Murine Shoulder Arthritis Score (MSAS). The trabecular bone of the humeral head and metaphysis was analyzed using bone histomorphometry. The expression of proinflammatory cytokines and catabolic enzymes was evaluated immunohistochemically. RESULTS In the mCTA model, the MSAS increased starting from 2 weeks after induction, and there was notable subchondral bone collapse with fibrous cells at 4 weeks. The mCTA cartilage exhibited positive staining for TNF-α, IL-1β/6, MMP-3/13, and ADAMTS5. The trabecular bone volume was reduced not only in the subchondral bone but also in the metaphysis of the humeri, and bone resorption was enhanced in these areas. In the collapsed subchondral bone, both bone formation and resorption were increased. The fibrous cells showed expression of TNF-α, IL-6, and MMP-13, along with specific markers of mesenchymal stem cells. Furthermore, the fibrous cells showed osteoblastic characteristics (RUNX2-positive) and expressed RANKL. CONCLUSIONS The LHB and the capsuloligamentous complex are critical stabilizers of the glenohumeral joint, serving to prevent the advancement of CTA following massive rotator cuff tears. Fibrous cells appear to play a role in the humeral head bone resorption.
Collapse
Affiliation(s)
- T. Ijuin
- Department of Orthopaedic Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Kagoshima 890-8520, Japan
- Department of Medical Joint Materials, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Kagoshima 890-8520, Japan
| | - T. Iuchi
- Department of Orthopaedic Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Kagoshima 890-8520, Japan
| | - H. Tawaratsumida
- Department of Orthopaedic Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Kagoshima 890-8520, Japan
| | - Y. Masuda
- Department of Orthopaedic Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Kagoshima 890-8520, Japan
- Department of Locomotory Organ Regeneration, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Kagoshima 890-8520, Japan
| | - A. Tokushige
- Department of Clinical Pharmacology and Therapeutics, Graduate School of Medicine, University of the Ryukyus, Nakagami Gun Nishihara Cho, Okinawa 903-0213, Japan
| | - S. Maeda
- Department of Bone and Joint Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Kagoshima 890-8520, Japan
| | - N. Taniguchi
- Department of Orthopaedic Surgery, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Kagoshima 890-8520, Japan
- Department of Medical Joint Materials, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Kagoshima 890-8520, Japan
- Department of Locomotory Organ Regeneration, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Kagoshima 890-8520, Japan
- Department of Bone and Joint Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Kagoshima 890-8520, Japan
| |
Collapse
|
6
|
Hang NTL, Hijikata M, Maeda S, Thuong PH, Huan HV, Hoang NP, Tam DB, Anh PT, Huyen NT, Cuong VC, Kobayashi N, Wakabayashi K, Miyabayashi A, Seto S, Keicho N. Host-pathogen relationship in retreated tuberculosis with major rifampicin resistance-conferring mutations. Front Microbiol 2023; 14:1187390. [PMID: 37469437 PMCID: PMC10352910 DOI: 10.3389/fmicb.2023.1187390] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 06/09/2023] [Indexed: 07/21/2023] Open
Abstract
Introduction It is assumed that host defense systems eliminating the pathogen and regulating tissue damage make a strong impact on the outcome of tuberculosis (TB) disease and that these processes are affected by rifampicin (RIF) resistance-conferring mutations of Mycobacterium tuberculosis (Mtb). However, the host responses to the pathogen harboring different mutations have not been studied comprehensively in clinical settings. We analyzed clinico-epidemiological factors and blood transcriptomic signatures associated with major rpoB mutations conferring RIF resistance in a cohort study. Methods Demographic data were collected from 295 active pulmonary TB patients with treatment history in Hanoi, Vietnam. When recruited, drug resistance-conferring mutations and lineage-specific variations were identified using whole-genome sequencing of clinical Mtb isolates. Before starting retreatment, total RNA was extracted from the whole blood of HIV-negative patients infected with Mtb that carried either the rpoB H445Y or rpoB S450L mutation, and the total RNA was subjected to RNA sequencing after age-gender matching. The individual RNA expression levels in the blood sample set were also measured using real-time RT-PCR. Logistic and linear regression models were used to assess possible associations. Results In our cohort, rpoB S450L and rpoB H445Y were major RIF resistance-conferring mutations [32/87 (36.8%) and 15/87 (17.2%), respectively]. H445Y was enriched in the ancient Beijing genotype and was associated with nonsynonymous mutations of Rv1830 that has been reported to regulate antibiotic resilience. H445Y was also more frequently observed in genetically clustered strains and in samples from patients who had received more than one TB treatment episode. According to the RNA sequencing, gene sets involved in the interferon-γ and-α pathways were downregulated in H445Y compared with S450L. The qRT-PCR analysis also confirmed the low expression levels of interferon-inducible genes, including BATF2 and SERPING1, in the H445Y group, particularly in patients with extensive lesions on chest X-ray. Discussion Our study results showed that rpoB mutations as well as Mtb sublineage with additional genetic variants may have significant effects on host response. These findings strengthen the rationale for investigation of host-pathogen interactions to develop countermeasures against epidemics of drug-resistant TB.
Collapse
Affiliation(s)
| | - Minako Hijikata
- Department of Pathophysiology and Host Defense, The Research Institute of Tuberculosis, JATA, Tokyo, Japan
| | - Shinji Maeda
- Faculty of Pharmaceutical Sciences, Hokkaido University of Science, Sapporo, Hokkaido, Japan
| | | | | | | | - Do Bang Tam
- Department of Biochemistry, Hematology and Blood Transfusion, Hanoi Lung Hospital, Hanoi, Vietnam
| | - Pham Thu Anh
- Tuberculosis Network Management Office, Hanoi Lung Hospital, Hanoi, Vietnam
| | - Nguyen Thu Huyen
- NCGM-BMH Medical Collaboration Center, Hanoi, Vietnam
- Department of Health Policy and Economics, Hanoi University of Public Health, Hanoi, Vietnam
| | | | | | - Keiko Wakabayashi
- Department of Pathophysiology and Host Defense, The Research Institute of Tuberculosis, JATA, Tokyo, Japan
| | - Akiko Miyabayashi
- Department of Pathophysiology and Host Defense, The Research Institute of Tuberculosis, JATA, Tokyo, Japan
| | - Shintaro Seto
- Department of Pathophysiology and Host Defense, The Research Institute of Tuberculosis, JATA, Tokyo, Japan
| | - Naoto Keicho
- The Research Institute of Tuberculosis, JATA, Tokyo, Japan
- National Center for Global Health and Medicine, Tokyo, Japan
| |
Collapse
|
7
|
Yokota S, Kaji K, Yonezawa T, Momoi Y, Maeda S. CD204⁺ tumor-associated macrophages are associated with clinical outcome in canine pulmonary adenocarcinoma and transitional cell carcinoma. Vet J 2023; 296-297:105992. [PMID: 37164121 DOI: 10.1016/j.tvjl.2023.105992] [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: 11/01/2022] [Revised: 05/04/2023] [Accepted: 05/07/2023] [Indexed: 05/12/2023]
Abstract
Tumor-associated macrophages are abundant infiltrating cells in the tumor microenvironment (TME). Macrophages can be classified into several types of subsets based on their immune responses. Among those subsets, M2 macrophages contribute to anti-inflammatory responses and create an immunosuppressive environment that promotes tumor cell proliferation. In a previous study, human cancer patients with high M2 macrophages showed a worse prognosis for many types of tumors. However, studies examining the relationship between M2 macrophages and clinical outcomes in canine tumors are limited. In the previous human and canine studies, CD204 has been used as the marker for detecting M2 macrophages. Then we evaluated CD204+ and total macrophages infiltration and its association with clinical outcomes in canine solid tumors. In this study, we examined dogs with oral malignant melanoma (OMM), pulmonary adenocarcinoma (PA), hepatocellular carcinoma (HCC), and transitional cell carcinoma (TCC). Compared to healthy tissues, CD204+ and total macrophages were increased in OMM, PA, and TCC, but not in HCC. High CD204+ macrophage levels were significantly associated with lung metastasis in TCC (P = 0.030). Kaplan-Meier analysis revealed that high CD204+ macrophage levels were associated with shorter overall survival (OS) in canine patients with PA (P = 0.012) and TCC (P = 0.0053). These results suggest that CD204+ macrophages contribute to tumor progression and could be a prognostic factor in dogs with PA and TCC.
Collapse
Affiliation(s)
- S Yokota
- Department of Veterinary Clinical Pathobiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - K Kaji
- Department of Veterinary Clinical Pathobiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - T Yonezawa
- Department of Veterinary Clinical Pathobiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Y Momoi
- Department of Veterinary Clinical Pathobiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - S Maeda
- Department of Veterinary Clinical Pathobiology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan.
| |
Collapse
|
8
|
Tamechika SY, Ohmura SI, Maeda S, Naniwa T. Efficacy of denosumab on bisphosphonate-treated osteoporosis and osteopenia in systemic rheumatic disease patients receiving glucocorticoids. J Bone Miner Metab 2023; 41:203-211. [PMID: 36512086 DOI: 10.1007/s00774-022-01393-9] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 11/25/2022] [Indexed: 12/14/2022]
Abstract
INTRODUCTION Evidence on second-line agents for osteoporosis and osteopenia associated with glucocorticoid use after first-line bisphosphonate therapy is limited. We, therefore, examine the efficacy of denosumab on bisphosphonate-treated osteoporosis and osteopenia in Japanese systemic rheumatic disease (SRD) patients receiving glucocorticoids. MATERIALS AND METHODS Glucocorticoid-treated SRD patients with a pre-existing fragility fracture, either lumbar spine (LS) or femoral neck (FN) bone mineral density (BMD) T-score of ≤ -2.5 or of ≤ -1.5 without a significant increase in BMD in the past year despite oral bisphosphonate therapy were enrolled in this study. They were randomized to switch to 60 mg subcutaneous denosumab every six months (switching group) or to continue the bisphosphonate (continuing group). The primary endpoint was the percent change from baseline in BMD at the LS and FN at week 52. RESULTS Of the 39 subjects, 19 were assigned to the switching group and 20 to the continuing group. The switching group showed significant increases in LS BMD (5.7% vs. 1.1%, p = 0.002) and FN BMD (4.2% vs. -0.3%, p = 0.008) at week 52 than the continuing group, with a significant decrease in serum tartrate-resistant acid phosphatase 5b (-28.1% vs. 7.0%, p < 0.001) and improved patient satisfaction. CONCLUSION Switching to denosumab demonstrated greater efficacy than continuing bisphosphonates in increasing BMD, inhibiting osteoclast activation, and enhancing patient satisfaction in Japanese bisphosphonate-treated osteoporosis and osteopenia patients with concomitant SRD receiving glucocorticoids.
Collapse
Affiliation(s)
- Shin-Ya Tamechika
- Division of Rheumatology, Department of Internal Medicine, Nagoya City University Hospital, Nagoya, Aichi, Japan
- Department of Respiratory Medicine, Allergy and Clinical Immunology, Nagoya City University Graduate School of Medical Sciences, Kawasumi, Mizuho-Ku, Nagoya, Aichi, 467-8601, Japan
| | - Shin-Ichiro Ohmura
- Department of Rheumatology, Seirei Hamamatsu General Hospital, Hamamatsu, Shizuoka, Japan
| | - Shinji Maeda
- Division of Rheumatology, Department of Internal Medicine, Nagoya City University Hospital, Nagoya, Aichi, Japan
- Department of Respiratory Medicine, Allergy and Clinical Immunology, Nagoya City University Graduate School of Medical Sciences, Kawasumi, Mizuho-Ku, Nagoya, Aichi, 467-8601, Japan
| | - Taio Naniwa
- Division of Rheumatology, Department of Internal Medicine, Nagoya City University Hospital, Nagoya, Aichi, Japan.
- Department of Respiratory Medicine, Allergy and Clinical Immunology, Nagoya City University Graduate School of Medical Sciences, Kawasumi, Mizuho-Ku, Nagoya, Aichi, 467-8601, Japan.
| |
Collapse
|
9
|
Tanaka A, Maeda S, Nomura T, Llamas-Covarrubias MA, Tanaka S, Jin L, Lim EL, Morikawa H, Kitagawa Y, Akizuki S, Ito Y, Fujimori C, Hirota K, Murase T, Hashimoto M, Higo J, Zamoyska R, Ueda R, Standley DM, Sakaguchi N, Sakaguchi S. Construction of a T cell receptor signaling range for spontaneous development of autoimmune disease. J Exp Med 2023; 220:213728. [PMID: 36454183 PMCID: PMC9718937 DOI: 10.1084/jem.20220386] [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] [Received: 03/02/2022] [Revised: 10/06/2022] [Accepted: 11/14/2022] [Indexed: 12/02/2022] Open
Abstract
Thymic selection and peripheral activation of conventional T (Tconv) and regulatory T (Treg) cells depend on TCR signaling, whose anomalies are causative of autoimmunity. Here, we expressed in normal mice mutated ZAP-70 molecules with different affinities for the CD3 chains, or wild type ZAP-70 at graded expression levels under tetracycline-inducible control. Both manipulations reduced TCR signaling intensity to various extents and thereby rendered those normally deleted self-reactive thymocytes to become positively selected and form a highly autoimmune TCR repertoire. The signal reduction more profoundly affected Treg development and function because their TCR signaling was further attenuated by Foxp3 that physiologically repressed the expression of TCR-proximal signaling molecules, including ZAP-70, upon TCR stimulation. Consequently, the TCR signaling intensity reduced to a critical range generated pathogenic autoimmune Tconv cells and concurrently impaired Treg development/function, leading to spontaneous occurrence of autoimmune/inflammatory diseases, such as autoimmune arthritis and inflammatory bowel disease. These results provide a general model of how altered TCR signaling evokes autoimmune disease.
Collapse
Affiliation(s)
- Atsushi Tanaka
- Department of Experimental Pathology, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan.,Laboratory of Experimental Immunology, WPI Immunology Frontier Research Center, Osaka University, Suita, Japan.,Department of Frontier Research in Tumor Immunology, Center of Medical Innovation and Translational Research, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Shinji Maeda
- Department of Experimental Pathology, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan.,Department of Respiratory Medicine, Allergy and Clinical Immunology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Takashi Nomura
- Department of Experimental Pathology, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
| | - Mara Anais Llamas-Covarrubias
- Laboratory of Systems Immunology, WPI Immunology Frontier Research Center, Osaka University, Suita, Japan.,Institute of Research in Biomedical Sciences, University Center of Health Sciences, University of Guadalajara, Guadalajara, Mexico
| | - Satoshi Tanaka
- Department of Experimental Pathology, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
| | - Lin Jin
- Laboratory of Systems Immunology, WPI Immunology Frontier Research Center, Osaka University, Suita, Japan
| | - Ee Lyn Lim
- Laboratory of Experimental Immunology, WPI Immunology Frontier Research Center, Osaka University, Suita, Japan
| | - Hiromasa Morikawa
- Laboratory of Experimental Immunology, WPI Immunology Frontier Research Center, Osaka University, Suita, Japan
| | - Yohko Kitagawa
- Laboratory of Experimental Immunology, WPI Immunology Frontier Research Center, Osaka University, Suita, Japan
| | - Shuji Akizuki
- Department of Experimental Pathology, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
| | - Yoshinaga Ito
- Department of Experimental Pathology, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
| | - Chihiro Fujimori
- Department of Experimental Pathology, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
| | - Keiji Hirota
- Department of Experimental Pathology, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan.,Laboratory of Experimental Immunology, WPI Immunology Frontier Research Center, Osaka University, Suita, Japan
| | - Tosei Murase
- Department of Experimental Pathology, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan.,Laboratory of Experimental Immunology, WPI Immunology Frontier Research Center, Osaka University, Suita, Japan
| | - Motomu Hashimoto
- Department of Experimental Pathology, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
| | - Junichi Higo
- Institute for Protein Research, Osaka University, Suita, Japan
| | - Rose Zamoyska
- Institute for Immunology and Infection Research, The University of Edinburgh, Edinburgh, UK
| | - Ryuzo Ueda
- Department of Tumor Immunology, Aichi Medical University School of Medicine, Aichi, Japan
| | - Daron M Standley
- Laboratory of Systems Immunology, WPI Immunology Frontier Research Center, Osaka University, Suita, Japan
| | - Noriko Sakaguchi
- Department of Experimental Pathology, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan.,Laboratory of Experimental Immunology, WPI Immunology Frontier Research Center, Osaka University, Suita, Japan
| | - Shimon Sakaguchi
- Department of Experimental Pathology, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan.,Laboratory of Experimental Immunology, WPI Immunology Frontier Research Center, Osaka University, Suita, Japan
| |
Collapse
|
10
|
Miura Y, Isogai S, Maeda S, Kanazawa S. CTLA-4-Ig internalizes CD80 in fibroblast-like synoviocytes from chronic inflammatory arthritis mouse model. Sci Rep 2022; 12:16363. [PMID: 36180526 PMCID: PMC9525600 DOI: 10.1038/s41598-022-20694-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Accepted: 09/16/2022] [Indexed: 11/09/2022] Open
Abstract
CD80 interact with CD28 and CTLA-4 on antigen-presenting cells, and function in the co-stimulatory signaling that regulates T cell activity. CTLA-4-Ig is used to treat RA by blocking co-stimulatory signaling. Chronic inflammatory arthritis was induced in D1BC mice using low-dose arthritogenic antigens and treated with CTLA-4-Ig. We performed histopathology of the joints and lymph nodes, serological examination for rheumatoid factors, and flow cytometric analysis of isolated synovial cells, including CD45- FLSs and CD45+ synovial macrophages. CTLA-4-Ig treatment ameliorated the chronic inflammatory polyarthritis. There was a decrease in the number of infiltrating lymphoid cells in the joints as well as in the levels of RF-IgG associated with a decrease in the number of B cells in the lymph nodes; more than 15% of CD45- FLSs expressed CD80, and a small number of them expressed PD-L1, indicating the presence of PD-L1/CD80 cis-heterodimers in these cells. CTLA-4-Ig internalized CD80, but not PD-L1, in isolated synovial cells. Gene ontology analysis revealed that CTLA-4-Ig internalization did not significantly alter the expression of inflammation-related genes. The therapeutic effect of CTLA-4-Ig appears to extend beyond the lymph nodes into the inflamed synovial compartment through the synergistic inactivation of T cells by the CD80 and PD-L1 axes.
Collapse
Affiliation(s)
- Yoko Miura
- Department of Neurodevelopmental Disorder Genetics, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan
| | - Shyuntaro Isogai
- Department of Respiratory Medicine, Allergy and Clinical Immunology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Shinji Maeda
- Department of Respiratory Medicine, Allergy and Clinical Immunology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Satoshi Kanazawa
- Department of Neurodevelopmental Disorder Genetics, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan.
| |
Collapse
|
11
|
Naniwa T, Yamabe T, Ohmura SI, Uehara K, Tamechika SY, Maeda S, Isogai S, Wada J. Baseline clinical features predicting macrophage activation syndrome in patients with systemic adult-onset Still's disease receiving interleukin-6 inhibitor treatment. Int J Rheum Dis 2022; 25:1003-1012. [PMID: 35719030 DOI: 10.1111/1756-185x.14371] [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: 01/31/2022] [Revised: 06/03/2022] [Accepted: 06/08/2022] [Indexed: 11/29/2022]
Abstract
AIM Macrophage activation syndrome (MAS), a severe complication of systemic adult-onset Still's disease (AOSD), has been reported to occur during interleukin-6 (IL-6) inhibitor treatment. However, predictors for MAS development are unknown. Therefore, this study investigated predictive features for MAS development after starting IL-6 inhibitor treatment in systemic AOSD patients. METHOD In a single-center retrospective study involving systemic AOSD patients who were refractory to high-dose glucocorticoids with immunosuppressants and started IL-6 inhibitor treatment between April 2008 and March 2020, we compared the baseline clinical features between patients who developed AOSD flare with MAS features (MAS group) and those who did not (non-MAS group) during IL-6 inhibitor treatment. RESULTS Only tocilizumab was used as an IL-6 inhibitor. Six of 14 refractory systemic AOSD patients developed AOSD flares with MAS features during tocilizumab treatment, including 4 who developed them shortly after initiation. The MAS group had significantly lower neutrophil counts, fibrinogen, and higher IL-18/C-reactive protein (CRP) ratio at starting tocilizumab (baseline) than the non-MAS group. Before starting tocilizumab, neutrophil counts were trending downward and upward in the MAS and non-MAS groups, respectively, with significant differences in changes. Receiver operating characteristic analysis showed that baseline neutrophil counts and fibrinogen and their changes before tocilizumab treatment and baseline IL-18/CRP ratio had significant discriminatory abilities for subsequent MAS development. CONCLUSION We identified baseline laboratory features associated with MAS development after initiating an IL-6 inhibitor in refractory systemic AOSD patients. These features may reflect the suppression of IL-6 signaling, and further suppression of IL-6 signaling might trigger early-onset MAS.
Collapse
Affiliation(s)
- Taio Naniwa
- Division of Rheumatology, Department of Internal Medicine, Nagoya City University Hospital, Nagoya, Japan.,Department of Respiratory Medicine, Allergy and Clinical Immunology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Toru Yamabe
- Division of Rheumatology, Department of Internal Medicine, Nagoya City University Hospital, Nagoya, Japan.,Department of Respiratory Medicine, Allergy and Clinical Immunology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Shin-Ichiro Ohmura
- Department of Rheumatology, Seirei Hamamatsu General Hospital, Hamamatsu, Japan
| | - Koji Uehara
- Division of Rheumatology, Department of Internal Medicine, Nagoya City University Hospital, Nagoya, Japan.,Department of Respiratory Medicine, Allergy and Clinical Immunology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Shin-Ya Tamechika
- Division of Rheumatology, Department of Internal Medicine, Nagoya City University Hospital, Nagoya, Japan.,Department of Respiratory Medicine, Allergy and Clinical Immunology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Shinji Maeda
- Division of Rheumatology, Department of Internal Medicine, Nagoya City University Hospital, Nagoya, Japan.,Department of Respiratory Medicine, Allergy and Clinical Immunology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Shuntaro Isogai
- Division of Rheumatology, Department of Internal Medicine, Nagoya City University Hospital, Nagoya, Japan.,Department of Respiratory Medicine, Allergy and Clinical Immunology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Junichi Wada
- Department of Respiratory Medicine, Allergy and Clinical Immunology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.,Department of Rheumatology, Toyokawa City Hospital, Toyokawa, Japan
| |
Collapse
|
12
|
Inui K, Mandai K, Maeda S, Masuda S, Yamada S, Ohashi H, Ikawa T. AB0971 Relationship between walking speed and lower limb skeletal muscle mass in patients with knee joint disorders. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BackgroundKnee joint disorder is one of the factors causing frailty in the elderly, which is associated with a decrease in walking speed.ObjectivesWe measured the walking speed of patients scheduled to undergo primary total knee arthroplasty (TKA) and examined factors correlated with walking speed.MethodsThe patients with knee disorders scheduled to undergo knee arthroplasty at our hospital between July 2020 and May 2021 were included. They were assessed for basic attributes, clinical assessment including Kness Society Score (KSS), degree of pain on walking by visual analogue scale (VAS), range of motion (ROM), and also leg skeletal muscle mass index (SMI; whole-body mode DXA), quadriceps strength by dynamometer with written consent (UMIN ID: 000040940). And Japanese Cardiovascular Health Study criteria for frailty, and sarcopenia by Asian Working Group for Sarcopenia 2019 criteria were evaluated.ResultsDemographic data of 83 patients (65 women, mean age 74.9 years) included in this study was shown in Table 1. The distribution in frailty is 36.2% and that in sarcopenia is 7.3%. Most of the patients with frailty with knee disorder did not suffer from sarcopenia. A multivariate analysis was conducted with walking speed as the objective variable and the dependent variables as age, gender, pain VAS on walking, KSS, leg SMI, quadriceps strength, and ROM. The results showed that age and ROM in flexion were significantly and independently associated with walking speed (P=0.01, 0.03). Gender, pain VAS on walking, KSS, leg SMI, quadriceps strength, and ROM in extension were not significantly associated with walking speed (P=0.92, 0.11, 0.11, 0.52, 0.85, 0.52).ConclusionAmong the patients with knee disorders immediately before arthroplasty, frailty was not caused by sarcopenia. Age was found to be the most correlated factor with walking speed, and walking speed became slower with age. In addition, poor flexion angle was also the factor for delayed walking speed, but it did not correlate with lower limb skeletal muscle mass or quadriceps strength. In this study pain on walking was not significant factor for walking speed, because it was observed in most of all cases.FactorGroup disease (n)osteoarthritis78 (94%) rheumatoid arthritis5 (6.0%)body mass index (kg/m2) 25.54 (4.11)pain VAS on walking 37.08 (26.35)total Knee Society Score 77.66 (27.85)range of motion (degree)flexion119.46 (12.88) extension-9.58 (6.59)quadriceps power (N) 122.00 [53.00, 350.00]waling speed (m/sec) 0.95 (0.33)grip power (kg) 20.24 (6.97)skeletal muscle mass index (kg/m2)appendicular6.50 [4.92, 9.85] lower limb5.06 [3.76, 7.56]Frailty (n)none10 (12.5%)Pre-frail41 (51.2%) frail29 (36.2%)Sarcopenia (n)none76 (92.7%)sarcopenia4 (4.9%) severe sarcopenia2 (2.4%)mean (standard deviation); median [min max]Disclosure of InterestsNone declared
Collapse
|
13
|
Ishimoto K, Hatanaka N, Otani S, Maeda S, Xu B, Yasugi M, Moore JE, Suzuki M, Nakagawa S, Yamasaki S. Tea crude extracts effectively inactivate severe acute respiratory syndrome coronavirus 2. Lett Appl Microbiol 2021; 74:2-7. [PMID: 34695222 PMCID: PMC8661916 DOI: 10.1111/lam.13591] [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: 07/21/2021] [Revised: 10/03/2021] [Accepted: 10/19/2021] [Indexed: 12/29/2022]
Abstract
It is well known that black and green tea extracts, particularly polyphenols, have antimicrobial activity against various pathogenic microbes including viruses. However, there is limited data on the antiviral activity against severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2), which emerged rapidly in China in late 2019 and which has been responsible for coronavirus disease 2019 (COVID‐19) pandemic globally. In this study, 20 compounds and three extracts were obtained from black and green tea and found that three tea extracts showed significant antiviral activity against SARS‐CoV‐2, whereby the viral titre decreased about 5 logs TCID50 per ml by 1·375 mg ml−1 black tea extract and two‐fold diluted tea bag infusion obtained from black tea when incubated at 25°C for 10 s. However, when concentrations of black and green tea extracts were equally adjusted to 344 µg ml−1, green tea extracts showed more antiviral activity against SARS‐CoV‐2. This simple and highly respected beverage may be a cheap and widely acceptable means to reduce SARS‐CoV‐2 viral burden in the mouth and upper gastrointestinal and respiratory tracts in developed as well as developing countries.
Collapse
Affiliation(s)
- K Ishimoto
- Laboratory of Innovative Food Science, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan.,Global Center for Medical Engineering and Informatic, Osaka University, Osaka, Japan
| | - N Hatanaka
- Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan.,Asian Health Science Research Institute, Osaka Prefecture University, Izumisano, Osaka, Japan.,Osaka International Research Center for Infectious Diseases, Osaka Prefecture University, Izumisano, Osaka, Japan
| | - S Otani
- Laboratory of Innovative Food Science, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan.,R&D Group, Mitsui Norin Co. Ltd, Fujieda, Shizuoka, Japan
| | - S Maeda
- Laboratory of Innovative Food Science, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan.,R&D Group, Mitsui Norin Co. Ltd, Fujieda, Shizuoka, Japan
| | - B Xu
- Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan
| | - M Yasugi
- Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan.,Asian Health Science Research Institute, Osaka Prefecture University, Izumisano, Osaka, Japan.,Osaka International Research Center for Infectious Diseases, Osaka Prefecture University, Izumisano, Osaka, Japan
| | - J E Moore
- Northern Ireland Public Health Laboratory, Nightingale (Belfast City) Hospital, Belfast, UK
| | - M Suzuki
- Laboratory of Innovative Food Science, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan.,R&D Group, Mitsui Norin Co. Ltd, Fujieda, Shizuoka, Japan
| | - S Nakagawa
- Laboratory of Innovative Food Science, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan.,Global Center for Medical Engineering and Informatic, Osaka University, Osaka, Japan.,Laboratory of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan
| | - S Yamasaki
- Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka, Japan.,Asian Health Science Research Institute, Osaka Prefecture University, Izumisano, Osaka, Japan.,Osaka International Research Center for Infectious Diseases, Osaka Prefecture University, Izumisano, Osaka, Japan
| |
Collapse
|
14
|
Le Hang NT, Hijikata M, Maeda S, Miyabayashi A, Wakabayashi K, Seto S, Diem NTK, Yen NTT, Van Duc L, Thuong PH, Van Huan H, Hoang NP, Mitarai S, Keicho N, Kato S. Phenotypic and genotypic features of the Mycobacterium tuberculosis lineage 1 subgroup in central Vietnam. Sci Rep 2021; 11:13609. [PMID: 34193941 PMCID: PMC8245516 DOI: 10.1038/s41598-021-92984-5] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 06/15/2021] [Indexed: 11/09/2022] Open
Abstract
Mycobacterium tuberculosis (Mtb) has different features depending on different geographic areas. We collected Mtb strains from patients with smear-positive pulmonary tuberculosis in Da Nang, central Vietnam. Using a whole genome sequencing platform, including genome assembly complemented by long-read-sequencing data, genomic characteristics were studied. Of 181 Mtb isolates, predominant Vietnamese EAI4_VNM and EAI4-like spoligotypes (31.5%), ZERO strains (5.0%), and part of EAI5 (11.1%) were included in a lineage-1 (L1) sublineage, i.e., L1.1.1.1. These strains were found less often in younger people, and they genetically clustered less frequently than other modern strains. Patients infected with ZERO strains demonstrated less lung infiltration. A region in RD2bcg spanning six loci, i.e., PE_PGRS35, cfp21, Rv1985c, Rv1986, Rv1987, and erm(37), was deleted in EAI4_VNM, EAI4-like, and ZERO strains, whereas another 118 bp deletion in furA was specific only to ZERO strains. L1.1.1.1-sublineage-specific deletions in PE_PGRS4 and PE_PGRS22 were also identified. RD900, seen in ancestral lineages, was present in majority of the L1 members. All strains without IS6110 (5.0%) had the ZERO spoligo-pattern. Distinctive features of the ancestral L1 strains provide a basis for investigation of the modern versus ancestral Mtb lineages and allow consideration of countermeasures against this heterogeneous pathogen.
Collapse
Affiliation(s)
| | - Minako Hijikata
- Department of Pathophysiology and Host Defense, The Research Institute of Tuberculosis, JATA, Tokyo, Japan
| | - Shinji Maeda
- Faculty of Pharmaceutical Sciences, Hokkaido University of Science, Hokkaido, Japan
| | - Akiko Miyabayashi
- Department of Pathophysiology and Host Defense, The Research Institute of Tuberculosis, JATA, Tokyo, Japan
| | - Keiko Wakabayashi
- Department of Pathophysiology and Host Defense, The Research Institute of Tuberculosis, JATA, Tokyo, Japan
| | - Shintaro Seto
- Department of Pathophysiology and Host Defense, The Research Institute of Tuberculosis, JATA, Tokyo, Japan
| | | | | | - Le Van Duc
- Da Nang General Hospital, Da Nang, Vietnam
| | | | | | | | - Satoshi Mitarai
- Department of Mycobacterium Reference and Research, The Research Institute of Tuberculosis, JATA, Tokyo, Japan
| | - Naoto Keicho
- The Research Institute of Tuberculosis, JATA, Japan Anti-Tuberculosis Association, 3-1-24 Matsuyama, Kiyose, Tokyo, 204-8533, Japan. .,National Center for Global Health and Medicine, Tokyo, Japan.
| | - Seiya Kato
- The Research Institute of Tuberculosis, JATA, Japan Anti-Tuberculosis Association, 3-1-24 Matsuyama, Kiyose, Tokyo, 204-8533, Japan
| |
Collapse
|
15
|
Tanaka N, Kimura S, Kamatari YO, Nakata K, Kobatake Y, Inden M, Yamato O, Urushitani M, Maeda S, Kamishina H. In vitro evidence of propagation of superoxide dismutase-1 protein aggregation in canine degenerative myelopathy. Vet J 2021; 274:105710. [PMID: 34166783 DOI: 10.1016/j.tvjl.2021.105710] [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: 01/12/2021] [Revised: 06/17/2021] [Accepted: 06/18/2021] [Indexed: 11/30/2022]
Abstract
Canine degenerative myelopathy (DM) is a progressive and fatal neurodegenerative disorder that has been linked to mutations in the superoxide dismutase 1 (SOD1) gene. The accumulation of misfolded protein aggregates in spinal neurons and astrocytes is implicated as an important pathological process in DM; however, the mechanism of protein aggregate formation is largely unknown. In human neurodegenerative diseases, such as amyotrophic lateral sclerosis (ALS), cell-to-cell propagation of disease-relevant proteins has been demonstrated. Therefore, in this study, propagation of aggregation-forming property of mutant SOD1 protein in DM in vitro was investigated. This study demonstrated that aggregates composed of canine wild type SOD1 protein were increased by co-transfection with canine mutant SOD1 (E40K SOD1), indicating intracellular propagation of SOD1 aggregates. Further, aggregated recombinant SOD1 proteins were released from the cells, taken up by other cells, and induced further aggregate formation of normally folded SOD1 proteins. These results suggest intercellular propagation of SOD1 aggregates. The hypothesis of cell-to-cell propagation of SOD1 aggregates proposed in this study may underly the progressive nature of DM pathology.
Collapse
Affiliation(s)
- N Tanaka
- Joint Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - S Kimura
- The United Graduate School of Veterinary Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - Y O Kamatari
- Division of Instrumental Analysis, Life Science Research Center, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - K Nakata
- The United Graduate School of Veterinary Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - Y Kobatake
- Joint Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - M Inden
- Laboratory of Medical Therapeutics and Molecular Therapeutics, Gifu Pharmaceutical University, 1-26-4 Daigaku-Nishi, Gifu, 501-1196, Japan
| | - O Yamato
- Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Korimoto, Kagoshima, 890-8580, Japan
| | - M Urushitani
- Department of Neurology, Shiga Univ. of Medical Science, Seta Tsukinowa-cho, Otsu, Shiga, 520-2192, Japan
| | - S Maeda
- Joint Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan; The United Graduate School of Veterinary Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - H Kamishina
- Joint Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan; The United Graduate School of Veterinary Sciences, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan.
| |
Collapse
|
16
|
Yamada H, Chikamatsu K, Aono A, Murata K, Miyazaki N, Kayama Y, Bhatt A, Fujiwara N, Maeda S, Mitarai S. Fundamental Cell Morphologies Examined With Cryo-TEM of the Species in the Novel Five Genera Robustly Correlate With New Classification in Family Mycobacteriaceae. Front Microbiol 2020; 11:562395. [PMID: 33304323 PMCID: PMC7701246 DOI: 10.3389/fmicb.2020.562395] [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: 05/21/2020] [Accepted: 10/12/2020] [Indexed: 11/25/2022] Open
Abstract
A recent study proposed the novel classification of the family Mycobacteriaceae based on the genome analysis of core proteins in 150 Mycobacterium species. The results from these analyses supported the existence of five distinct monophyletic groups within the genus Mycobacterium. That is, Mycobacterium has been divided into two novel genera for rapid grower Mycobacteroides and Mycolicibacterium, and into three genera for slow grower Mycolicibacter, Mycolicibacillus, and an emended genus Mycobacterium, which include all the major human pathogens. Here, cryo-TEM examinations of 1,816 cells of 31 species (34 strains) belonging to the five novel genera were performed. The fundamental morphological properties of every single cell, such as cell diameter, cell length, cell perimeter, cell circularity, and aspect ratio were measured and compared between these genera. In 50 comparisons on the five parameters between any two genera, only five comparisons showed “non-significant” differences. That is, there are non-significant differences between slow grower genus Mycolicibacillus and genus Mycobacterium in average cell diameter (p = 0.15), between rapid grower genus Mycobacteroides and slow grower genus Mycobacterium in average cell length (p > 0.24), between genus Mycobacteroides and genus Mycobacterium (p > 0.68) and between genus Mycolicibacter and genus Mycolicibacillus (p > 0.11) in average cell perimeter, and between genus Mycolicibacterium and genus Mycobacterium in circularity (p > 0.73). The other 45 comparisons showed significant differences between the genera. Genus Mycobacteroides showed the longest average cell diameter, whereas the genus Mycolicibacter showed the shortest average diameter. Genus Mycolicibacterium showed the most extended average cell length, perimeter, and aspect ratio, whereas the genus Mycolicibacillus showed the shortest average cell length, perimeter, and aspect ratio. Genus Mycolicibacillus showed the highest average cell circularity, whereas genus Mycobacterium showed the lowest average cell circularity. These fundamental morphological data strongly support the new classification in the family Mycobacteriaceae, and this classification is rational and effective in the study of the members of the family Mycobacteriaceae. Because both the genus Mycolicibacterium and the genus Mycobacterium contain many species and showed larger significant standard deviations in every parameter, these genera may be divided into novel genera which show common genotype and phenotypes in morphology and pathogenicity.
Collapse
Affiliation(s)
- Hiroyuki Yamada
- Department of Mycobacterium Reference and Research, The Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Kinuyo Chikamatsu
- Department of Mycobacterium Reference and Research, The Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Akio Aono
- Department of Mycobacterium Reference and Research, The Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Kazuyoshi Murata
- Supportive Center for Brain Research, National Institute for Physiological Science, Okazaki, Japan
| | - Naoyuki Miyazaki
- Supportive Center for Brain Research, National Institute for Physiological Science, Okazaki, Japan.,Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance (TARA), University of Tsukuba, Tsukuba, Japan
| | | | - Apoorva Bhatt
- School of Biosciences and Institute of Microbiology and Infection, University of Birmingham, Birmingham, United Kingdom
| | - Nagatoshi Fujiwara
- Department of Food and Nutrition, Faculty of Contemporary Human Life Science, Tezukayama University, Nara, Japan
| | - Shinji Maeda
- Department of Pharmacy, Faculty of Pharmaceutical Science, Hokkaido University of Science, Sapporo, Japan
| | - Satoshi Mitarai
- Department of Mycobacterium Reference and Research, The Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan.,Department of Basic Mycobacteriology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| |
Collapse
|
17
|
Maeda S, Kawabata M, Yonai R, Tsuda Y, Kawashima T, Atarashi H, Hirao K. Utility of novel Omnipolar activation mapping for the detection of ventricular premature contraction origin. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0415] [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
Bipolar electrograms are significantly influenced by direction of the propagating wavefront in relation to the recording bipole. Omnipolar voltage mapping may be superior to standard bipolar mapping since it obtains maximum voltage of all possible bipolar electrode orientations without the need for catheter rotation. Therefore, omnipolar maps can provide voltage maps with larger voltages as well as better defined boundaries.
Purpose
Whether omnipolar activation maps also describe better activation maps versus traditional bipolar maps during ventricular premature contraction (VPC) catheter ablation is unclear.
Methods
A high-density mapping catheter was advanced to the ventricular outflow tract and a high-resolution activation map was created. Each electrode along and across the splines of the catheter are 4mm apart. Bipoles were calculated along (MAP 2), across (MAP 3) and bidirectional (MAP 4) the splines while omnipoles (MAP 1) were derived from a right triangle clique. Within a square area, four omnipolar and two bipolar values along, across and bidirectional values were defined.
Results
Though the earliest activation site was vague by along and across maps (arrow), white color became evident by bidirectional map, and the VPC origin became distinct with omnipolar mapping. RF lesions were given via an open-irrigated ablation catheter targeting a lesion size index 5.0. The VPC was eliminated by radiofrequency ablation.
Conclusion
Omnipolar activation mapping may be more accurate than traditional bipolar mapping during ventricular premature contraction (VPC) catheter ablation.
Figure 1
Funding Acknowledgement
Type of funding source: None
Collapse
Affiliation(s)
- S Maeda
- AOI Universal Hospital, Kawasaki, Japan
| | | | - R Yonai
- AOI Universal Hospital, Kawasaki, Japan
| | - Y Tsuda
- AOI Universal Hospital, Kawasaki, Japan
| | | | | | - K Hirao
- AOI Universal Hospital, Kawasaki, Japan
| |
Collapse
|
18
|
Fujie S, Hasegawa N, Sanada K, Hamaoka T, Padilla J, Martinez-Lemus L, Maeda S, Iemitsu M. Time course of improvement in novel nitric oxide-regulated hormones in response to exercise training in middle-aged and older adults. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.3241] [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
Introduction
Cardiovascular disease risk augments with advance of age. The mechanism of the increased cardiovascular disease risk by aging is related to attenuation of arterial function via endothelium-derived relaxing factor, such as nitric oxide (NO). Recently, apelin and adropin have identified as NO-upregulated hormones, whereas augmented secretion of asymmetric dimethylarginine (ADMA) have identified as NO-downregulated hormones. However, the effects of exercise training-induced changes in NO-regulated hormones on the reduction of arterial stiffness via NO productions remain unclear.
Purpose
This study aimed to determine the time-dependent changes in NO-regulated hormones related to exercise-training effects of arterial stiffness via NO productions in healthy middle-aged and older adults.
Methods
Thirty-two Japanese healthy middle-aged and older subjects (67±1 years) were randomly divided into two groups: exercise intervention and sedentary controls. Subjects in the training group completed 8-week of aerobic exercise training (60–70% peak oxygen uptake [VO2peak] for 45 min, 3 days/week). We evaluated plasma nitrite/nitrate (NOx), apelin, and ADMA levels, serum apelin level and carotid-femoral pulse wave velocity (cfPWV) as an index of arterial stiffness, measured every 2 weeks for 8-week in the training group.
Results
cfPWV was gradually declined from baseline to 8-week and significantly decreased from baseline at weeks 6 (P<0.05) and 8 (P<0.01). Plasma NOx level was gradually elevated during exercise intervention and significantly increased from baseline at weeks 6 (P<0.05) and 8 (P<0.01). Interestingly, plasma apelin and serum adropin levels were gradually elevated during exercise intervention and significantly increased from baseline at weeks 4, 6 and 8 (each P<0.01). Additionally, plasma ADMA level was significantly decreased at 8-week intervention (P<0.01). Furthermore, the exercise training-induced increase in plasma NOx level was significantly correlated with the changes in circulating apelin (r=0.505, P<0.05), adropin (r=0.662, P<0.01), or ADMA (r=−0.483, P<0.05) levels before and after the 8-week. The exercise training-induced increase in plasma NOx level was significantly correlated with training-induced changes in circulating apelin (r=0.483, P<0.05) or adropin (r=0.556, P<0.05) before and after the 6-week.
Conclusions
These results suggest that the NO-upregulated hormones (apelin and adropin) were increased at the early stage of exercise training intervention and NO-downregulated hormone (ADMA) was decreased at the late stage of exercise training intervention, and these changes in NO-regulated hormones may be contributed to the reduction of arterial stiffness in the middle-aged and older adults.
Funding Acknowledgement
Type of funding source: Public grant(s) – National budget only. Main funding source(s): This work was supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology of Japan.
Collapse
Affiliation(s)
- S Fujie
- Ritsumeikan University, Kusatsu, Japan
| | | | - K Sanada
- Ritsumeikan University, Kusatsu, Japan
| | - T Hamaoka
- Tokyo Medical University, Tokyo, Japan
| | - J Padilla
- University of Missouri, Columbia, United States of America
| | | | - S Maeda
- University of Tsukuba, Ibaraki, Japan
| | - M Iemitsu
- Ritsumeikan University, Kusatsu, Japan
| |
Collapse
|
19
|
Hang NTL, Hijikata M, Maeda S, Miyabayashi A, Seto S, Diem NTK, Yen NTT, Thuong PH, Huan HV, Hoang NP, Mitarai S, Kato S, Keicho N. Genomic factors associated with katG-S315T in Mycobacterium tuberculosis clinical isolates in Vietnam. Tuberculosis (Edinb) 2020. [DOI: 10.1183/13993003.congress-2020.5297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
20
|
Ohmura SI, Uehara K, Yamabe T, Tamechika S, Maeda S, Naniwa T. Successful use of short-term add-on tocilizumab for refractory adult-onset still's disease with macrophage activation syndrome despite treatment with high-dose glucocorticoids, cyclosporine, and etoposide. Mod Rheumatol Case Rep 2020; 4:202-207. [PMID: 33086994 DOI: 10.1080/24725625.2020.1741073] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 03/07/2020] [Indexed: 06/11/2023]
Abstract
Macrophage activation syndrome (MAS) is a form of secondary hemophagocytic lymphohistiocytosis (HLH) and is a life-threatening complication of adult-onset Still disease. MAS has been usually treated with high-dose glucocorticoid with additional immunosuppressive agents, such as cyclosporine. Etoposide has been used for the treatment of severe refractory MAS based on the successful results of HLH-2004 protocol in patients with mostly primary form of HLH. We herein describe a case of severe refractory MAS secondary to adult-onset Still disease in an elderly woman that inadequately responded to etoposide but remarkably responded to additional tocilizumab. Furthermore, short-term tocilizumab led her into remission and enabled tapering off glucocorticoids after 15 months. Tocilizumab may be effective for the treatment of refractory HLH after the failure of the etoposide-containing induction regimen.
Collapse
Affiliation(s)
- Shin-Ichiro Ohmura
- Division of Rheumatology, Department of Internal Medicine, Nagoya City University Hospital, Nagoya, Japan
| | - Koji Uehara
- Division of Rheumatology, Department of Internal Medicine, Nagoya City University Hospital, Nagoya, Japan
| | - Toru Yamabe
- Division of Rheumatology, Department of Internal Medicine, Nagoya City University Hospital, Nagoya, Japan
| | - Shinya Tamechika
- Division of Rheumatology, Department of Internal Medicine, Nagoya City University Hospital, Nagoya, Japan
| | - Shinji Maeda
- Division of Rheumatology, Department of Internal Medicine, Nagoya City University Hospital, Nagoya, Japan
| | - Taio Naniwa
- Division of Rheumatology, Department of Internal Medicine, Nagoya City University Hospital, Nagoya, Japan
| |
Collapse
|
21
|
Kanai A, Niki Y, Hayashi N, Maeda S, Horie K, Okamoto H. The Initial Subjective Sensory Change in the Dermatome During Intrathecal Injection of Plain Bupivacaine Predicts the Spread of Sensory Blockade: A Prospective Multi-Level Modeling Study. Anesth Pain Med 2020; 9:e91216. [PMID: 31903328 PMCID: PMC6925406 DOI: 10.5812/aapm.91216] [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: 03/04/2019] [Revised: 07/09/2019] [Accepted: 08/02/2019] [Indexed: 11/16/2022] Open
Abstract
Background Predicting the spread of anesthesia after intrathecal injection of plain local anesthetics is challenging owing to both patient and anesthesiologist-related factors. Objectives This study aimed to examine the initial patient-reported sensory changes during intrathecal injections and used multi-level analyses to examine the relationships between these changes and other major factors affecting the spread of anesthesia. Methods The participants were 120 consecutive patients with the American Society of Anesthesiologists status I and II, who were scheduled for open repair of inguinal hernias under spinal anesthesia. Lumbar puncture was performed at the midline of the L3 - L4 vertebrae and 3 mL of 0.5% isobaric bupivacaine was administered at 0.25 mL/s. The onset, dermatome, and side of the initial subjective sensory changes (ISSCs) were assessed by patient report. The extent of sensory loss to ice and pinprick stimuli, the degree of motor block in lower extremities, blood pressure, and heart rate were examined at 5-minutes intervals for 20 minutes after intrathecal injection. Results All patients reported ISSCs after 9 (4, 18) seconds [median (minimum, maximum)] of the intrathecal injection onset. In 66.7% of the patients, ISSCs occurred in the L1 - L5 dermatomes. Three patients experienced pain during the early intraoperative period, and described ISSCs in the sacral dermatome. Height, mean blood pressure, and ISSCs were significantly correlated with sensory loss. Faster onset, lower dermatome, and floor-side of ISSCs predicted a narrower area of sensory loss, with dermatome as the most important indicator. Conclusions Our findings demonstrate that ISSC, primarily based on dermatome, is a significant predictor for spinal anesthesia spread.
Collapse
Affiliation(s)
- Akifumi Kanai
- Department of Research and Development Center for New Medical Frontiers, Kitasato University School of Medicine, Sagamihara, Japan
- Corresponding Author: Department of Research and Development Center for New Medical Frontiers, Kitasato University School of Medicine, 1-15-1 Kitasato, Minami-ku, 252-0374, Sagamihara, Japan. Tel/Fax: +81-427788606,
| | - Yuriko Niki
- Department of Anesthesiology, National Hospital Organization Sagamihara National Hospital, Sagamihara, Japan
| | - Norihito Hayashi
- Department of Anesthesiology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Shinji Maeda
- Department of Internal Medicine, Infusion and Preventive Clinic, Sagamihara, Japan
| | - Kazunobu Horie
- Department of Surgery, Toshiba Rinkan Hospital, Sagamihara, Japan
| | - Hirotsugu Okamoto
- Department of Anesthesiology, National Hospital Organization Sagamihara National Hospital, Sagamihara, Japan
| |
Collapse
|
22
|
Fujie S, Hasegawa N, Sanada K, Hamaoka T, Maeda S, Iemitsu M. 62 Time course of improvement in secretory unbalance of asymmetric dimethylarginine and nitric oxide productions in response to exercise training in middle-aged and older adults. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehz872] [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
Funding Acknowledgements
Supported by Grants-in-Aid for Scientific Research (#17H02182, #16K13059, M. Iemitsu; #18J01024, S. Fujie)
Introduction
Aging is well known to elevate risks of cardiovascular diseases. As a mechanism of these increased risks with aging, a reduction of nitric oxide (NO) production via augmented secretion of asymmetric dimethylarginine (ADMA), an endogenous inhibitor of NO synthesis is related. Habitual aerobic exercise has shown to improve secretory unbalance of endothelium-derived regulating factors with aging, such as increase in NO and decrease in ADMA, resulting in the reduction of arterial stiffness. However, the time course of improvement in secretory unbalance of NO and ADMA productions in response to exercise training in middle-aged and older adults remains unclear.
Purpose
This study aimed to determine the time course of changes in plasma nitrite/nitrate (NOx) and ADMA levels related to exercise-training effects of arterial stiffness in healthy middle-aged and older adults.
Methods
Thirty-two Japanese healthy middle-aged and older subjects (67 ± 1 years) were randomly divided into two groups: exercise intervention and sedentary controls. Subjects in the training group completed 8-week of aerobic exercise training (60-70% peak oxygen uptake [VO2peak] for 45 min, 3 days/week). We evaluated plasma NOx and ADMA concentrations and carotid-femoral pulse wave velocity (cfPWV) as an index of arterial stiffness, measured every 2 weeks for 8-week in the training group.
Results
cfPWV was gradually declined from baseline to 8-week and significantly decreased from baseline at weeks 6 (P < 0.05) and 8 (P < 0.01). Plasma NOx level was gradually elevated during exercise intervention and significantly increased from baseline at weeks 6 (P < 0.05) and 8 (P < 0.01). Interestingly, plasma ADMA level was significantly decreased at 8-week intervention (P < 0.05). Furthermore, the exercise training-induced reduction in plasma ADMA level was negatively correlated with the change in plasma NOx level before and after the 8-week (r = -0.483, P < 0.05). The exercise training-induced change in plasma ADMA concentration was positively correlated with training-induced change in cfPWV before and after the 8-week (r = 0.633, P < 0.01). Additionally, there was a negative correlation between the changes in plasma NOx level and cfPWV before and after the 8-week (r = -0.642, P < 0.05).
Conclusions
These results suggest that habitual aerobic exercise can normalize the secretory unbalance of NO and ADMA productions in 6 to 8 weeks, and these balance normalizations may be contributed to the reduction of arterial stiffness in the middle-aged and older adults.
Collapse
Affiliation(s)
- S Fujie
- University of Tsukuba, Ibaraki, Japan
| | | | - K Sanada
- Ritsumeikan University, Shiga, Japan
| | - T Hamaoka
- Tokyo Medical University, Tokyo, Japan
| | - S Maeda
- University of Tsukuba, Ibaraki, Japan
| | - M Iemitsu
- Ritsumeikan University, Shiga, Japan
| |
Collapse
|
23
|
Feldsine PT, Jucker MT, Kaur M, Lienau AH, Kerr DE, Adamson A, Beaupre L, Bishop J, Casasola E, Cote C, Desilets S, D’lima C, Elahimanesh P, Fitzgerald S, Forgey R, Fortin J, Gohil V, Griffin J, Hardin M, Kaur D, Ketrenos J, King A, Kupski B, Luce S, Lucia L, Maeda S, Markun D, Marquez-Gonzalez M, McClendon J, McKessock J, Nelson C, Nguyen T, O’Brien C, Ramos M, Reilly S, Roa N, Schiffelbein Z, Shaffer K, Shepherd D, Sowell S, Trujillo E, Wang S, Williams K. Evaluation of the Assurance GDS® for Salmonella Method in Foods and Environmental Surfaces: Multilaboratory Collaborative Study. J AOAC Int 2019. [DOI: 10.1093/jaoac/93.1.150] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
A multilaboratory collaborative study was conducted to compare the detection of Salmonella by the Assurance GDS® for Salmonella method and the Reference culture methods. Six foods, representing a variety of low microbial and high microbial load foods were analyzed. Seventeen laboratories in the United States and Canada participated in this study. No statistical differences (P < 0.05) were observed between the Assurance GDS for Salmonella and the Reference culture methods for any inoculation level of any food type or naturally contaminated food, except for pasta, for which the Assurance GDS method had a higher number of confirmed test portions for Salmonella compared to the Reference method.
Collapse
Affiliation(s)
| | - Markus T Jucker
- BioControl Systems, Inc., 12822 SE 32nd St, Bellevue, WA 98005
| | - Mandeep Kaur
- BioControl Systems, Inc., 12822 SE 32nd St, Bellevue, WA 98005
| | - Andrew H Lienau
- BioControl Systems, Inc., 12822 SE 32nd St, Bellevue, WA 98005
| | - David E Kerr
- BioControl Systems, Inc., 12822 SE 32nd St, Bellevue, WA 98005
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
24
|
Sakai S, Adachi R, Akiyama H, Teshima R, Doi H, Shibata H, Urisu A, Arakawa F, Haraguchi H, Hirose Y, Hirota M, Iidzuka T, Ikeno K, Kojima K, Maeda S, Minegishi Y, Mishima T, Oguchi K, Seki T, Yamakawa H, Yano T, Yasuda K. Determination of Walnut Protein in Processed Foods by Enzyme-Linked Immunosorbent Assay: Interlaboratory Study. J AOAC Int 2019. [DOI: 10.1093/jaoac/93.4.1255] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Because food allergens from tree nuts, including walnuts, are a frequent cause of adverse food reactions for allergic patients, the labeling of foods containing ingredients derived from tree nuts is required in numerous countries. According to Japanese regulations, the labeling of food products containing walnuts is recommended. To ensure proper labeling, a novel sandwich ELISA kit for the determination of walnut protein in processed foods (Walnut Protein [2S-Albumin] Kit; Morinaga Institute of Biological Science, Inc.; walnut kit) has been developed. We prepared seven types of incurred samples (model processed foods: biscuits, bread, sponge cake, orange juice, jelly, chicken meatballs, and rice gruel) containing 10 g walnut soluble protein/g of food for use in interlaboratory evaluations of the walnut kit. The walnut kit displayed sufficient reproducibility relative standard deviations (interlaboratory precision: 5.89.9 RSDR) and a high level of recovery (81119) for all the incurred samples. All the repeatability relative standard deviation (RSDr) values for the incurred samples that were examined were less than 6.0. The results of this interlaboratory evaluation suggested that the walnut kit could be used as a precise and reliable tool for determination of walnut protein in processed foods.
Collapse
Affiliation(s)
- Shinobu Sakai
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Reiko Adachi
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Hiroshi Akiyama
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Reiko Teshima
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Hirotoshi Doi
- Morinaga Institute of Biological Science, Inc., 2-1-16, Sachiura, Kanazawa-ku, Yokohama 236-0003, Japan
| | - Haruki Shibata
- Morinaga Institute of Biological Science, Inc., 2-1-16, Sachiura, Kanazawa-ku, Yokohama 236-0003, Japan
| | - Atsuo Urisu
- Fujita Health University, The Second Teaching Hospital, 3-6-10, Otobashi, Nakagawa-ku, Nagoya 454-8509, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
25
|
Yamada H, Chikamastu K, Aono A, Murata K, Miyazaki N, Kayama Y, Fujiwara N, Maeda S, Mitarai S. PB-01 Comparison of the fundamental cell morphological properties examined with whole-mount ice-embedded cryo-TEM between 5 genera in family Mycobacteriacea. Microscopy (Oxf) 2019. [DOI: 10.1093/jmicro/dfz084] [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: 11/12/2022] Open
Affiliation(s)
- Hiroyuki Yamada
- Department of Mycobacterium Reference and Research, the Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Kinuyo Chikamastu
- Department of Mycobacterium Reference and Research, the Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Akio Aono
- Department of Mycobacterium Reference and Research, the Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Kazuyoshi Murata
- National Institute for Physiological Sciences, National Institutes of Natural Sciences, Aichi, Japan
| | - Naoyuki Miyazaki
- National Institute for Physiological Sciences, National Institutes of Natural Sciences, Aichi, Japan
| | | | - Nagatoshi Fujiwara
- Department of Food and Nutrition, Faculty of Contemporary Human Life Science, Tezukayama University, Nara, Japan
| | - Shinji Maeda
- Department of Life Science, Faculty of Pharmaceutical Sciences, Hokkaido University of Science, Hokkaido, Japan
| | - Satoshi Mitarai
- Department of Mycobacterium Reference and Research, the Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan
- Department of Basic Mycobacteriology, Graduate School of Biomedical Science, Nagasaki University, Nagasaki, Japan
| |
Collapse
|
26
|
Maeda S, Osaga S, Maeda T, Takeda N, Tamechika SY, Naniwa T, Niimi A. Circulating Th17.1 cells as candidate for the prediction of therapeutic response to abatacept in patients with rheumatoid arthritis: An exploratory research. PLoS One 2019; 14:e0215192. [PMID: 31747403 PMCID: PMC6867595 DOI: 10.1371/journal.pone.0215192] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 11/05/2019] [Indexed: 12/18/2022] Open
Abstract
T-helper (Th)17.1 cells exhibit high pathogenicity in inflammatory diseases. This study aimed to identify the changes in the proportions of Th subsets, including Th17.1, which are associated with abatacept treatment response in Japanese patients with rheumatoid arthritis. On the basis of the results, we assessed whether Th17.1 is a potential cellular biomarker. Multicolor flow cytometry was used to determine the circulating Th subsets among CD4+ T lymphocytes in 40 patients with rheumatoid arthritis before abatacept treatment. All the patients received abatacept treatment for 24 weeks; changes in disease activity score, including 28-joint count C-reactive protein, and responsiveness indicated by other indices to abatacept treatment were evaluated according the European League Against Rheumatism criteria (good and moderate responders and nonresponders). The correlation between the abatacept responses and the proportions of Th subsets (baseline) was analyzed. Logistic regression analysis with inverse probability weighting method was performed to calculate the odds ratio adjusted for patient characteristics. The proportion of baseline Th17.1 cells was significantly lower in patients categorized as good responders than in those categorized as non-good responders (moderate responders and nonresponders; p = 0.0064). The decrease in 28-joint count C-reactive protein after 24 weeks of abatacept therapy showed a significant negative correlation with the proportion of Th17.1 cells. The adjusted odds ratio for achieving good response in patients with baseline Th17.1 levels below the median value was 14.6 (95% confidence interval, 2.9–72.3; p = 0.0021) relative to that in the remaining patients. The proportion of Th17.1 cells at baseline is a good candidate for predicting abatacept treatment response in Japanese patients. These novel findings may represent a significant step in the pursuit of precision medicine.
Collapse
Affiliation(s)
- Shinji Maeda
- Department of Respiratory Medicine, Allergy and Clinical Immunology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
- * E-mail:
| | - Satoshi Osaga
- Clinical Research Management Center, Nagoya City University Hospital, Nagoya, Japan
| | - Tomoyo Maeda
- Department of Respiratory Medicine, Allergy and Clinical Immunology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Norihisa Takeda
- Department of Respiratory Medicine, Allergy and Clinical Immunology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Shin-ya Tamechika
- Department of Respiratory Medicine, Allergy and Clinical Immunology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Taio Naniwa
- Department of Respiratory Medicine, Allergy and Clinical Immunology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Akio Niimi
- Department of Respiratory Medicine, Allergy and Clinical Immunology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| |
Collapse
|
27
|
Takahashi K, Kosaki K, Tanahashi K, Osuka Y, Tanaka K, Kuro-o M, Maeda S. Relationship between aerobic fitness and nephron index in middle-aged and older adults. J Sci Med Sport 2019. [DOI: 10.1016/j.jsams.2019.08.281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
28
|
Kosaki K, Tanahashi K, Matsui M, Akazawa N, Osuka Y, Tanaka K, Dunstan D, Owen N, Shibata A, Oka K, Maeda S. Objectively assessed sedentary behavior, physical activity, and renal function in middle-aged and older Japanese adults. J Sci Med Sport 2019. [DOI: 10.1016/j.jsams.2019.08.243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
29
|
Thi Le Hang N, Hijikata M, Maeda S, Huu Thuong P, Van Huan H, Phuong Hoang N, Matsushita I, Keicho N. Drug resistance-conferring mutations in Mycobacterium-tuberculosis isolated from retreated patients in Hanoi, Vietnam. Tuberculosis (Edinb) 2019. [DOI: 10.1183/13993003.congress-2019.oa2135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
30
|
Muser D, Santangeli P, Castro S, Casado Arroyo R, Maeda S, Benhayon D, Liuba I, Liang J, Sadek M, Chahal A, Magnani S, Garcia F, Marchlinski F, Selvanayagam J, Nucifora G. 553Prognostic value of non-ischemic ring-like left ventricular scar pattern in patients with apparently idiopathic ventricular arrhythmias: a CMR imaging study. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez125.004] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- D Muser
- University of Pennsylvania, Philadelphia, United States of America
| | - P Santangeli
- University of Pennsylvania, Philadelphia, United States of America
| | - S Castro
- University of Pennsylvania, Philadelphia, United States of America
| | | | - S Maeda
- Tokyo Medical And Dental University, Tokyo, Japan
| | - D Benhayon
- Memorial Healthcare System, Electrophysiology, Miami, United States of America
| | - I Liuba
- Linkoping University Hospital, Linkoping, Sweden
| | - J Liang
- University of Pennsylvania, Philadelphia, United States of America
| | - M Sadek
- University of Ottawa Heart Institute, Ottawa, Canada
| | - A Chahal
- University of Pennsylvania, Philadelphia, United States of America
| | - S Magnani
- New York University Langone Medical Center, New York, United States of America
| | - F Garcia
- University of Pennsylvania, Philadelphia, United States of America
| | - F Marchlinski
- University of Pennsylvania, Philadelphia, United States of America
| | - J Selvanayagam
- Flinders Medical Centre and Flinders University, Adelaide, Australia
| | - G Nucifora
- University Hospital of South Manchester NHS Foundation Trust, Manchester, United Kingdom of Great Britain & Northern Ireland
| |
Collapse
|
31
|
Iida J, Ishii S, Nakajima Y, Sessler DI, Teramae H, Kageyama K, Maeda S, Anada N, Shibasaki M, Sawa T, Nakayama Y. Hyperglycaemia augments lipopolysaccharide-induced reduction in rat and human macrophage phagocytosis via the endoplasmic stress-C/EBP homologous protein pathway. Br J Anaesth 2019; 123:51-59. [PMID: 31084986 DOI: 10.1016/j.bja.2019.03.040] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 03/04/2019] [Accepted: 03/05/2019] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Macrophage phagocytosis constitutes an essential part of the host defence against microbes and the resolution of inflammation. Hyperglycaemia during sepsis is reported to reduce macrophage function, and thus, potentiate inflammatory deterioration. We investigated whether high-glucose concentrations augment lipopolysaccharide-induced reduction in macrophage phagocytosis via the endoplasmic stress-C/EBP homologous protein (CHOP) pathway using animal and laboratory investigations. METHODS Peritoneal macrophages of artificially ventilated male Wistar rats, divided into four groups based on target blood glucose concentrations achieved by glucose administration with or without lipopolysaccharide, were obtained after 24 h. Human macrophages were also cultured in normal or high glucose with or without lipopolysaccharide exposure for 72 h. Changes in the phagocytic activity, intranuclear CHOP expression, and intracellular Akt phosphorylation status of macrophages were evaluated. These changes were also evaluated in human macrophages after genetic knock-down of CHOP by specific siRNA transfection or resolvin D2 treatment. RESULTS Lipopolysaccharide impaired phagocytosis, increased intranuclear expression of CHOP, and inhibited Akt phosphorylation in both rat peritoneal and human macrophages. Hyperglycaemic glucose concentrations augmented these changes. Genetic knock-down of CHOP restored phagocytic ability and Akt phosphorylation in human macrophages. Furthermore, resolvin D2 co-incubation restored the inhibited phagocytosis and Akt phosphorylation along with the inhibition of intranuclear CHOP expression in human macrophages. CONCLUSIONS These findings imply that controlling endoplasmic reticulum stress might provide new strategies for restoring reduced macrophage phagocytosis in sepsis-induced hyperglycaemia.
Collapse
Affiliation(s)
- J Iida
- Department of Anesthesiology and Critical Care, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - S Ishii
- Department of Anesthesiology and Critical Care, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Y Nakajima
- Department of Anesthesiology and Critical Care, Kansai Medical University, Osaka, Japan.
| | - D I Sessler
- Department of Outcomes Research, Anesthesiology Institute, Cleveland Clinic, Cleveland, OH, USA
| | - H Teramae
- Faculty of Teacher Education, Shumei University, Chiba, Japan
| | - K Kageyama
- Department of Anesthesiology and Critical Care, Kansai Medical University, Osaka, Japan
| | - S Maeda
- Department of Anesthesiology and Critical Care, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - N Anada
- Department of Anesthesiology and Critical Care, Kansai Medical University, Osaka, Japan
| | - M Shibasaki
- Department of Anesthesiology and Critical Care, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - T Sawa
- Department of Anesthesiology and Critical Care, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Y Nakayama
- Department of Anesthesiology and Critical Care, Kyoto Prefectural University of Medicine, Kyoto, Japan
| |
Collapse
|
32
|
Uchida M, Uchida K, Maeda S, Yonezawa T. Expression of apoptosis inhibitor of macrophages in tissue macrophages, leukocytes and vascular endothelial cells of dogs. Tissue Cell 2019; 58:112-120. [PMID: 31133238 DOI: 10.1016/j.tice.2019.05.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 04/30/2019] [Accepted: 05/01/2019] [Indexed: 10/26/2022]
Abstract
Apoptosis inhibitor of macrophages (AIM) is a protein which plays important roles in controlling the immune response and inflammation in human and mice. In dogs, AIM is reported to be expressed in cancerated macrophages and regulate the survival of these tumor cells. In this study, to elucidate the physiological expression pattern of AIM in dogs, systemic expression and distribution of AIM of dogs were investigated. Mature healthy Beagles were used. Various tissues, peripheral blood cells, and bone marrow cells of normal dogs were collected for in situ hybridization, real-time RT-PCR, and immunohistochemistry. AIM mRNA and protein were expressed in tissue macrophages of the spleen, liver, lungs, and lymph nodes, but not in the microglia of the cerebrum. Proximal tubules in the kidney also expressed AIM protein. Monocytes and B lymphocytes in circulating blood and a part of microvasculature endothelial cells showed AIM expression at both the mRNA and protein levels. In the bone marrow, early-stage monocyte progenitor-like cells expressed AIM mRNA and protein. These results clarified that AIM is expressed in more cell types than previously reported in human and mice. These data spread the possibility of AIM physiological functions and implies the relationship of AIM to the maturation of macrophage-strain cells in dogs and other species.
Collapse
Affiliation(s)
- M Uchida
- Laboratory of Veterinary Clinical Pathobiology, Department of Veterinary Medical Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan
| | - K Uchida
- Laboratory of Veterinary Pathology, Department of Veterinary Medical Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan
| | - S Maeda
- Laboratory of Veterinary Clinical Pathobiology, Department of Veterinary Medical Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan
| | - T Yonezawa
- Laboratory of Veterinary Clinical Pathobiology, Department of Veterinary Medical Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan.
| |
Collapse
|
33
|
Kitayama K, Maeda S, Nakamura A, Katayama I, Wataya-Kaneda M. 723 Sirolimus delivery to dermis and blood via oral and topical sirolimus formulations in hairless mice. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
34
|
Bouvet A, Amelot A, Pelorson X, Maeda S, Van Hirtum A. External lighting and sensing photoglottography: Characterization and MSePGG algorithm. Biomed Signal Process Control 2019. [DOI: 10.1016/j.bspc.2019.01.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
35
|
Kimizuka Y, Hoshino Y, Nishimura T, Asami T, Sakakibara Y, Morimoto K, Maeda S, Nakata N, Abe T, Uno S, Namkoong H, Fujiwara H, Funatsu Y, Yagi K, Fujie T, Ishii M, Inase N, Iwata S, Kurashima A, Betsuyaku T, Hasegawa N. Retrospective evaluation of natural course in mild cases of Mycobacterium avium complex pulmonary disease. PLoS One 2019; 14:e0216034. [PMID: 31022253 PMCID: PMC6483267 DOI: 10.1371/journal.pone.0216034] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [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: 06/18/2018] [Accepted: 04/14/2019] [Indexed: 11/23/2022] Open
Abstract
Background There is no proven management for mild cases of Mycobacterium avium complex (MAC) pulmonary disease, who do not immediately receive treatment and are managed with observation alone, because its long term-natural course, factors predictive of deterioration, and the effect of treating the disease remain unclear. Thus, we sought to investigate the natural course of mild cases of MAC pulmonary disease. Methods We conducted a multicenter retrospective study. Sixty-five patients with mild MAC pulmonary disease in whom treatment was withheld for at least 6 months after diagnosis were retrospectively recruited after a review of 747 medical records. Longitudinal changes in clinical features were evaluated by using a mixed effects model. Results Mean follow-up was 6.9 ± 5.7 years. During the follow-up period, 15 patients (23%) required treatment and 50 (77%) were managed with observation alone. At diagnosis, 65 patients had nodular bronchiectatic disease without fibrocavitary lesions. Among clinical features, mean body mass index (BMI), forced expiratory volume in 1 second as percent of forced vital capacity (%FEV1), nodular lung lesions, and bronchiectasis worsened significantly in the observation group during follow-up. In the treatment group, BMI, and %FEV1 were stable, but bronchiectasis significantly worsened. At diagnosis, the polyclonal MAC infection rate in the treatment group was higher than that in the observation group. Other microbiological factors, such as insertion sequences, did not differ significantly between the groups. Conclusions Mild MAC pulmonary disease progresses slowly but substantially without treatment. Treatment prevents the deterioration of the disease but not the progression of bronchiectasis. Polyclonal MAC infection is a predictor of disease progression.
Collapse
Affiliation(s)
- Yoshifumi Kimizuka
- Division of Pulmonary Medicine, Department of Medicine, School of Medicine, Keio University, Shinjuku, Tokyo, Japan
- Division of Infectious Diseases and Respiratory Medicine, Department of Internal Medicine, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - Yoshihiko Hoshino
- Leprosy Research Center, National Institute of Infectious Diseases, Higashimurayama, Tokyo, Japan
- * E-mail: (YH); (TN)
| | - Tomoyasu Nishimura
- Health Center, Keio University, Shinjuku, Tokyo, Japan
- * E-mail: (YH); (TN)
| | - Takahiro Asami
- Division of Pulmonary Medicine, Department of Medicine, School of Medicine, Keio University, Shinjuku, Tokyo, Japan
| | - Yumi Sakakibara
- Department of Integrated Pulmonology, Tokyo Medical and Dental University, Bunkyo, Tokyo, Japan
| | - Kozo Morimoto
- Respiratory Disease Center, Fukujuji Hospital, Anti-tuberculosis Association, Kiyose, Tokyo, Japan
| | - Shinji Maeda
- Faculty of Pharmaceutical Sciences, Hokkaido University of Science, Sapporo, Hokkaido, Japan
| | - Noboru Nakata
- Leprosy Research Center, National Institute of Infectious Diseases, Higashimurayama, Tokyo, Japan
| | - Takayuki Abe
- Department of Preventive Medicine and Public Health, Biostatistics Unit at Clinical and Translational Research Center, School of Medicine, Keio University, Shinjuku, Tokyo, Japan
| | - Shunsuke Uno
- Center for Infectious Diseases and Infection Control, School of Medicine, Keio University, Shinjuku, Tokyo, Japan
| | - Ho Namkoong
- Division of Pulmonary Medicine, Department of Medicine, School of Medicine, Keio University, Shinjuku, Tokyo, Japan
| | - Hiroshi Fujiwara
- Center for Infectious Diseases and Infection Control, School of Medicine, Keio University, Shinjuku, Tokyo, Japan
| | - Yohei Funatsu
- Division of Pulmonary Medicine, Department of Medicine, School of Medicine, Keio University, Shinjuku, Tokyo, Japan
| | - Kazuma Yagi
- Division of Pulmonary Medicine, Department of Medicine, School of Medicine, Keio University, Shinjuku, Tokyo, Japan
| | - Toshihide Fujie
- Department of Integrated Pulmonology, Tokyo Medical and Dental University, Bunkyo, Tokyo, Japan
| | - Makoto Ishii
- Division of Pulmonary Medicine, Department of Medicine, School of Medicine, Keio University, Shinjuku, Tokyo, Japan
| | - Naohiko Inase
- Department of Integrated Pulmonology, Tokyo Medical and Dental University, Bunkyo, Tokyo, Japan
| | - Satoshi Iwata
- Department of Infectious Diseases, Keio University School of Medicine, Shinjuku, Tokyo, Japan
| | - Atsuyuki Kurashima
- Respiratory Disease Center, Fukujuji Hospital, Anti-tuberculosis Association, Kiyose, Tokyo, Japan
| | - Tomoko Betsuyaku
- Division of Pulmonary Medicine, Department of Medicine, School of Medicine, Keio University, Shinjuku, Tokyo, Japan
| | - Naoki Hasegawa
- Center for Infectious Diseases and Infection Control, School of Medicine, Keio University, Shinjuku, Tokyo, Japan
| | | |
Collapse
|
36
|
Maeda S, Toda K, Hata H, Miyagawa S, Yoshikawa Y, Kainuma S, Kawamura T, Kawamura A, Yoshida S, Ueno T, Kuratani T, Sawa Y. Valvular Disease Management in Patients with Continuous-Flow Left Ventricular Assist Device. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
|
37
|
Ohmura SI, Naniwa T, Tamechika SY, Miyamoto T, Shichi D, Kazawa N, Iwagaitsu S, Maeda S, Wada JI, Niimi A. Effectiveness and safety of lower dose sulfamethoxazole/trimethoprim therapy for Pneumocystis jirovecii pneumonia in patients with systemic rheumatic diseases: A retrospective multicenter study. J Infect Chemother 2019; 25:253-261. [PMID: 30642768 DOI: 10.1016/j.jiac.2018.11.014] [Citation(s) in RCA: 5] [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] [Received: 10/03/2018] [Revised: 11/08/2018] [Accepted: 11/15/2018] [Indexed: 10/27/2022]
Abstract
OBJECTIVES To evaluate the effectiveness and safety of lower-dose sulfamethoxazole/trimethoprim therapy (SMX/TMP) for Pneumocystis jirovecii pneumonia (PCP) in patients with systemic rheumatic diseases. METHODS In this multicenter retrospective study, we compared effectiveness and safety of SMX/TMP for the treatment of PCP among patients divided into three groups according to the initial dosage of SMX/TMP: the low, ≤10 mg/kg/day; the intermediate, 10-15 mg/kg/day; and the high and conventional, 15-20 mg/kg/day for TMP dose. RESULTS Eighty-one patients, including 22, 30, and 29 patients in the low-, the intermediate- and the high-dose group could be analyzed and the 30-day survival rate were 100%, 93.3%, and 96.7%, respectively (P = 0.28). There were significant dose-dependent increasing trends of severe adverse drug reactions (ADRs) for SMX/TMP that were graded as ≥3 according to the Common Terminology Criteria for Adverse Events. When stratified by presence of severe hypoxemia defined by alveolar-arterial O2 gradient ≥45 mmHg, the 30-day survival and treatment modification rate were similar among the three groups, but frequency of severe ADRs were significantly decreased in the low-dose group. The low-dose group was independently and negatively associated with treatment modification within 14 days and severe ADRs. CONCLUSIONS Lower dose SMX/TMP therapy with ≤10 mg/kg/day for TMP was as effective as higher dose therapy for the treatment of PCP and associated with lower rates of treatment modification and severe ADRs in patients with systemic rheumatic diseases.
Collapse
Affiliation(s)
- Shin-Ichiro Ohmura
- Division of Rheumatology, Department of Internal Medicine, Nagoya City University Hospital, Nagoya, Aichi, Japan; Department of Respiratory Medicine, Allergy and Clinical Immunology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - Taio Naniwa
- Division of Rheumatology, Department of Internal Medicine, Nagoya City University Hospital, Nagoya, Aichi, Japan; Department of Respiratory Medicine, Allergy and Clinical Immunology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan.
| | - Shin-Ya Tamechika
- Division of Rheumatology, Department of Internal Medicine, Nagoya City University Hospital, Nagoya, Aichi, Japan; Department of Respiratory Medicine, Allergy and Clinical Immunology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - Toshiaki Miyamoto
- Department of Rheumatology, Seirei Hamamatsu General Hospital, Hamamatsu, Shizuoka, Japan
| | - Daisuke Shichi
- Department of Infectious Diseases and Rheumatology, Seirei Mikatahara General Hospital, Hamamatsu, Shizuoka, Japan
| | - Nobukata Kazawa
- Department of Radiology, Kansai Medical University Medical Center, Moriguchi, Osaka, Japan
| | - Shiho Iwagaitsu
- Department of Internal Medicine, Division of Rheumatology and Nephrology, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan
| | - Shinji Maeda
- Division of Rheumatology, Department of Internal Medicine, Nagoya City University Hospital, Nagoya, Aichi, Japan; Department of Respiratory Medicine, Allergy and Clinical Immunology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - Jun-Ichi Wada
- Division of Rheumatology, Department of Internal Medicine, Nagoya City University Hospital, Nagoya, Aichi, Japan; Department of Internal Medicine, Toyokawa City Hospital, Toyokawa, Aichi, Japan
| | - Akio Niimi
- Department of Respiratory Medicine, Allergy and Clinical Immunology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| |
Collapse
|
38
|
Zwiefelhofer ML, Zwiefelhofer EM, Yang SX, Maeda S, Singh J, Adams GP. 133 Test of minimum-intervention protocols for optimizing in vitro embryo production in bison. Reprod Fertil Dev 2019. [DOI: 10.1071/rdv31n1ab133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The study was done to determine whether minimal handling protocols for ovarian synchronization and ovarian superstimulation may be used to increase in vitro embryo production in bison. Ultrasound-guided cumulus-oocyte complex (COC) collection was done in a group of bison (n=23; random start) during the anovulatory season to synchronize new follicular wave emergence. The COC were classified morphologically (compact-good and -regular, expanded, denuded, degenerate) but not processed further. At the time of COC collection (Day 0), bison were assigned randomly to 3 groups and given 5mL of saline IM (non-superstimulated controls; n=11), 10 Armour units of pFSH (Antrin R10, Kyoritsu Seiyaku Corp., Tokyo, Japan) in 5mL of saline IM once per day from Day 0 to 2 (regular FSH; n=5), or 30 armour units of a sustained-release form of pFSH (Antrin R10Al, Kyoritsu Seiyaku Corp.) in 5mL of saline SC on Day 0 (long-acting FSH; n=7). On Day 4, a second COC collection was performed. Only compact COC were processed. The COC were matured in vitro for 25 to 28h at 38.8°C, fertilized (2×106 sperm mL−1) and co-incubated at 38.8°C in 5% CO2 for 18h. Presumptive zygotes were denuded and cultured at 38.8°C in 5% O2, 5% CO2 and 90% N2. Nominal data were compared by t-test and analysis of variance. Binomial data were compared among groups by chi-squared. There was no difference between the first (random) COC collection (n=23) and second collection (n=11 non-superstimulated controls) in the total number of follicles detected, but the distribution among size categories (3-4, 4-8, and >8mm) differed, i.e. fewer in the 3 to 4mm category at the time of the second COC collection (12.2±1.0v. 8.1±1.4; P<0.05). In the nonstimulated control group, there were no differences between the first and second COC collections in the number of follicles aspirated (12.7±1.0v. 10.4±1.5), number of COC collected (7.7±0.9v. 5.3±1.3), or in the categorical distribution of COC. At the second COC collection, the number of follicles in the >8mm category was greater in the regular FSH group than in the control or long-acting FSH groups (2.8±0.5v. 1.1±0.3, and 1.9±0.4, respectively; P<0.05), but no differences were detected in the number of follicles aspirated, COC collected, or in the categorical distribution of COC. The cleavage rate (of total oocytes submitted to in vitro maturation), recorded 2 days after IVF, was higher in the control group than in either the regular FSH or long-acting FSH groups [25/35 (71.4%), 7/28 (25.0%), 8/35 (22.8%); P<0.0001]. The freezable embryo production rate, recorded 7 days after IVF, was greater in the control group than in the regular FSH or long-acting FSH groups [19/35 (54.3%), 5/28 (17.9%), 5/35 (14.3%); P<0.01]. In conclusion, minimal-handling interventions used in the present study to increase embryo production in bison were not effective, likely as a result of the timing, frequency, and duration of superstimulation. A random start resulted in greater COC collection than collection 4 days after ovarian synchronization, and embryo production rates were greater in non-superstimulated bison.
This work was supported by Parks Canada and Saskatchewan ADF. Antrin products donated by Kyoritsu Seiyaku Corp., Japan.
Collapse
|
39
|
Sumiya Y, Maeda S. Paths of chemical reactions and their networks: from geometry optimization to automated search and systematic analysis. Chemical Modelling 2019. [DOI: 10.1039/9781788015868-00028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
|
40
|
Watanabe KI, Aogi K, Kitada M, Sangai T, Ohtani S, Aruga T, Kawaguchi H, Fujisawa T, Maeda S, Morimoto T, Morita S, Masuda N, Toi M, Ohno S. Clinical efficacy of eribulin as first- or second-line treatment for patients with recurrent HER2-negative breast cancer: A phase II randomized study (JBCRG-19). Ann Oncol 2018. [DOI: 10.1093/annonc/mdy272.307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
41
|
Hang N, Hijikata M, Keicho N, Maeda S, Duc L, Diem N, Yen N, Matsushita I, Kato S. Drug resistance profile of Mycobacterium tuberculosis isolated in Da Nang, Vietnam. Tuberculosis (Edinb) 2018. [DOI: 10.1183/13993003.congress-2018.pa3881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
42
|
Sakai K, Maeda S, Yamada Y, Chambers JK, Uchida K, Nakayama H, Yonezawa T, Matsuki N. Cover Image, Volume 16, Issue 3. Vet Comp Oncol 2018. [DOI: 10.1111/vco.12352] [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: 11/29/2022]
Affiliation(s)
- K. Sakai
- Department of Veterinary Clinical Pathobiology; Graduate School of Agricultural and Life Sciences, The University of Tokyo; Tokyo Japan
| | - S. Maeda
- Department of Veterinary Clinical Pathobiology; Graduate School of Agricultural and Life Sciences, The University of Tokyo; Tokyo Japan
| | - Y. Yamada
- Department of Veterinary Clinical Pathobiology; Graduate School of Agricultural and Life Sciences, The University of Tokyo; Tokyo Japan
| | - J. K. Chambers
- Department of Veterinary Pathology; Graduate School of Agricultural and Life Sciences, The University of Tokyo; Tokyo Japan
| | - K. Uchida
- Department of Veterinary Pathology; Graduate School of Agricultural and Life Sciences, The University of Tokyo; Tokyo Japan
| | - H. Nakayama
- Department of Veterinary Pathology; Graduate School of Agricultural and Life Sciences, The University of Tokyo; Tokyo Japan
| | - T. Yonezawa
- Department of Veterinary Clinical Pathobiology; Graduate School of Agricultural and Life Sciences, The University of Tokyo; Tokyo Japan
| | - N. Matsuki
- Department of Veterinary Clinical Pathobiology; Graduate School of Agricultural and Life Sciences, The University of Tokyo; Tokyo Japan
| |
Collapse
|
43
|
Maeda S, Goya M, Nakagama S, Hanyu Y, Enomoto Y, Lee K, Shiohira S, Sekigawa M, Yagishita A, Takahashi Y, Kawabata M, Hirao K. P6643Utility of ripple mapping localize the site of origin and to detect real substrate during catheter ablation of ventricular arrhythmia. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6643] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- S Maeda
- Tokyo Medical and Dental University, Cardiovascular Medicine, Tokyo, Japan
| | - M Goya
- Tokyo Medical and Dental University, Cardiovascular Medicine, Tokyo, Japan
| | - S Nakagama
- Tokyo Medical and Dental University, Cardiovascular Medicine, Tokyo, Japan
| | - Y Hanyu
- Tokyo Medical and Dental University, Cardiovascular Medicine, Tokyo, Japan
| | - Y Enomoto
- Tokyo Medical and Dental University, Cardiovascular Medicine, Tokyo, Japan
| | - K Lee
- Tokyo Medical and Dental University, Cardiovascular Medicine, Tokyo, Japan
| | - S Shiohira
- Tokyo Medical and Dental University, Cardiovascular Medicine, Tokyo, Japan
| | - M Sekigawa
- Tokyo Medical and Dental University, Cardiovascular Medicine, Tokyo, Japan
| | - A Yagishita
- Tokyo Medical and Dental University, Cardiovascular Medicine, Tokyo, Japan
| | - Y Takahashi
- Tokyo Medical and Dental University, Cardiovascular Medicine, Tokyo, Japan
| | - M Kawabata
- Tokyo Medical and Dental University, Cardiovascular Medicine, Tokyo, Japan
| | - K Hirao
- Tokyo Medical and Dental University, Cardiovascular Medicine, Tokyo, Japan
| |
Collapse
|
44
|
Nucifora G, Muser D, Santangeli P, Castro S, Maeda S, Casado Arroyo R, Liuba I, Benhayon D, Sadek M, Desjardins B, Garcia F, Callans D, Frankel D, Selvanayagam J, Marchlinski F. P267Risk stratification of patients with apparently idiopathic premature ventricular contractions: data from a multicenter international cardiac magnetic resonance registry. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.p267] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- G Nucifora
- University Hospital of South Manchester NHS Foundation Trust, Manchester, United Kingdom
| | - D Muser
- Cardiothoracic Department, University Hospital “Santa Maria della Misericordia”, Udine, Italy
| | - P Santangeli
- University of Pennsylvania, Philadelphia, United States of America
| | - S Castro
- University of Pennsylvania, Philadelphia, United States of America
| | - S Maeda
- Tokyo Medical and Dental University, Tokyo, Japan
| | | | - I Liuba
- Linkoping University Hospital, Linkoping, Sweden
| | - D Benhayon
- Memorial Healthcare System, Hollywood, United States of America
| | - M Sadek
- University of Ottawa Heart Institute, Ottawa, Canada
| | - B Desjardins
- University of Pennsylvania, Philadelphia, United States of America
| | - F Garcia
- University of Pennsylvania, Philadelphia, United States of America
| | - D Callans
- University of Pennsylvania, Philadelphia, United States of America
| | - D Frankel
- University of Pennsylvania, Philadelphia, United States of America
| | - J Selvanayagam
- Flinders Medical Centre and Flinders University, Adelaide, Australia
| | - F Marchlinski
- University of Pennsylvania, Philadelphia, United States of America
| |
Collapse
|
45
|
Tagawa K, Ra SG, Kumagai H, Yoshikawa T, Yoshida Y, Takekoshi K, Sakai S, Miyauchi T, Maeda S. Effects of resistance training on arterial compliance and plasma endothelin-1 levels in healthy men. Physiol Res 2018; 67:S155-S166. [PMID: 29947536 DOI: 10.33549/physiolres.933818] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Arterial compliance (AC) is an index of the elasticity of large arteries. Endothelial dysfunction has been reported to result in reduced arterial compliance, which represents increased arterial stiffness. A reduction in AC is elicited by high-intensity resistance training, however the mechanisms are obscure. Because a single bout of resistance exercise causes a transient increase in circulating plasma endothelin-1 in humans, some vasoconstrictors may play a role in the mechanisms. The present study aimed to investigate whether resistance training-induced decrease in AC is associated with changes in circulating vasoconstrictors levels in young men. Young sedentary men were assigned to control (n=5) or training (n=9) groups. The training group performed four-week high-intensity resistance training (weight training exercise; three sessions/week). We measured AC and plasma levels of endothelin-1, angiotensin II, and norepinephrine before and after intervention. Resistance training significantly decreased AC, whereas the changes in plasma levels of neither endothelin-1, nor angiotensin II, nor norepinephrine were significantly different between the control and the training groups. Moreover, we found no significant correlations between changes in circulating plasma levels (endothelin-1, angiotensin II, and norepinephrine) and in the AC. Despite of no alteration of the resting circulating plasma levels (endothelin-1, etc.), we cannot exclude a possibility that the tissue/local concentrations of vasoconstrictors (endothelin-1, etc.) around the vessels might be increased and also involved in a reduction of AC in the training group. Taken together, the present results suggest that circulating vasoconstrictors (endothelin-1, etc.) in plasma are not involved in a reduction in AC by the resistance training.
Collapse
Affiliation(s)
- K Tagawa
- Graduate School of Comprehensive Human Sciences, University of Tsukuba, Japan, Division of Sports Medicine, Faculty of Health and Sport Science, University of Tsukuba, Japan.
| | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Nakanaga K, Ogura Y, Toyoda A, Yoshida M, Fukano H, Fujiwara N, Miyamoto Y, Nakata N, Kazumi Y, Maeda S, Ooka T, Goto M, Tanigawa K, Mitarai S, Suzuki K, Ishii N, Ato M, Hayashi T, Hoshino Y. Naturally occurring a loss of a giant plasmid from Mycobacterium ulcerans subsp. shinshuense makes it non-pathogenic. Sci Rep 2018; 8:8218. [PMID: 29844323 PMCID: PMC5974349 DOI: 10.1038/s41598-018-26425-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Accepted: 04/30/2018] [Indexed: 12/30/2022] Open
Abstract
Mycobacterium ulcerans is the causative agent of Buruli ulcer (BU), a WHO-defined neglected tropical disease. All Japanese BU causative isolates have shown distinct differences from the prototype and are categorized as M. ulcerans subspecies shinshuense. During repeated sub-culture, we found that some M. shinshuense colonies were non-pigmented whereas others were pigmented. Whole genome sequence analysis revealed that non-pigmented colonies did not harbor a giant plasmid, which encodes elements needed for mycolactone toxin biosynthesis. Moreover, mycolactone was not detected in sterile filtrates of non-pigmented colonies. Mice inoculated with suspensions of pigmented colonies died within 5 weeks whereas those infected with suspensions of non-pigmented colonies had significantly prolonged survival (>8 weeks). This study suggests that mycolactone is a critical M. shinshuense virulence factor and that the lack of a mycolactone-producing giant plasmid makes the strain non-pathogenic. We made an avirulent mycolactone-deletion mutant strain directly from the virulent original.
Collapse
Affiliation(s)
- Kazue Nakanaga
- Department of Mycobacteriology, Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Yoshitoshi Ogura
- Department of Bacteriology, Faculty of Medicine, Kyushu University, Fukuoka, Japan
| | - Atsushi Toyoda
- Center for Information Biology, National Institute of Genetics, Shizuoka, Japan
| | - Mitsunori Yoshida
- Department of Mycobacteriology, Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Hanako Fukano
- Department of Mycobacteriology, Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Nagatoshi Fujiwara
- Department of Food and Nutrition, Faculty of Contemporary Human Life Science, Tezukayama University, Nara, Japan
| | - Yuji Miyamoto
- Department of Mycobacteriology, Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Noboru Nakata
- Department of Mycobacteriology, Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan
- Antimicrobial Resistance Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Yuko Kazumi
- Antimicrobial Resistance Research Center, National Institute of Infectious Diseases, Tokyo, Japan
- The Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Shinji Maeda
- The Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan
- School of Pharmacy, Hokkaido Pharmaceutical University, Sapporo, Japan
| | - Tadasuke Ooka
- Department of Microbiology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | | | - Kazunari Tanigawa
- Department of Mycobacteriology, Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan
- Faculty of Pharma-Sciences, Teikyo University, Tokyo, Japan
| | - Satoshi Mitarai
- The Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Tokyo, Japan
| | - Koichi Suzuki
- Department of Mycobacteriology, Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan
- Department of Clinical Laboratory Science, Faculty of Medical Technology, Teikyo University, Tokyo, Japan
| | - Norihisa Ishii
- Department of Mycobacteriology, Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Manabu Ato
- Department of Mycobacteriology, Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Tetsuya Hayashi
- Department of Bacteriology, Faculty of Medicine, Kyushu University, Fukuoka, Japan
| | - Yoshihiko Hoshino
- Department of Mycobacteriology, Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan.
| |
Collapse
|
47
|
Higuchi H, Maeda S, Ishii-Maruhama M, Honda-Wakasugi Y, Yabuki-Kawase A, Miyawaki T. Intellectual disability is a risk factor for delayed emergence from total intravenous anaesthesia. J Intellect Disabil Res 2018; 62:217-224. [PMID: 29193472 DOI: 10.1111/jir.12448] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 09/28/2017] [Accepted: 10/17/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND Previous studies have suggested that ID influences the depth of general anaesthesia (GA) and delays emergence from GA. In this retrospective cohort study, we investigated whether ID affects the time taken to emerge from GA. METHODS We selected dental patients who underwent GA at the Department of Dental Anaesthesiology, Okayama University Hospital, using predefined inclusion and exclusion criteria, before dividing the selected participants into ID and non-ID (control) groups. Relevant data were collected from electronic anaesthesia records. Emergence time, the time from the discontinuation of propofol and remifentanil to tracheal extubation, was recorded for each patient. We compared the data of the ID group and control group. The association between ID and the emergence time was tested for statistical significance. Multivariate linear regression analysis was used to control for confounders. RESULTS A total of 97 cases (control = 50, ID = 47) were included in the study. The emergence time was significantly longer in the ID group (ID group: 15.8 ± 6.6 min, control group: 10.8 ± 3.6 min). The ID group included more men and lower propofol and remifentanil infusion rates. The treatment time was longer, and the mean bispectral index was lower in the ID group. Sevoflurane inhalation was used only for anaesthesia induction in the ID group. In the multivariate linear regression analysis, ID was found to be significantly associated with a longer emergence time. CONCLUSION Our results suggest that ID is associated with a longer emergence time from GA.
Collapse
Affiliation(s)
- H Higuchi
- Department of Dental Anaesthesiology, Okayama University Hospital, Okayama, Japan
| | - S Maeda
- Department of Dental Anaesthesiology, Okayama University Hospital, Okayama, Japan
| | - M Ishii-Maruhama
- Department of Dental Anaesthesiology and Special Care Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Y Honda-Wakasugi
- Department of Dental Anaesthesiology and Special Care Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - A Yabuki-Kawase
- Center for Promotion of Dental Education and International Collaboration, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - T Miyawaki
- Department of Dental Anaesthesiology and Special Care Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| |
Collapse
|
48
|
Sakai K, Maeda S, Yamada Y, Chambers JK, Uchida K, Nakayama H, Yonezawa T, Matsuki N. Association of tumour-infiltrating regulatory T cells with adverse outcomes in dogs with malignant tumours. Vet Comp Oncol 2018; 16:330-336. [DOI: 10.1111/vco.12383] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 12/02/2017] [Accepted: 12/13/2017] [Indexed: 12/14/2022]
Affiliation(s)
- K. Sakai
- Department of Veterinary Clinical Pathobiology; Graduate School of Agricultural and Life Sciences, The University of Tokyo; Tokyo Japan
| | - S. Maeda
- Department of Veterinary Clinical Pathobiology; Graduate School of Agricultural and Life Sciences, The University of Tokyo; Tokyo Japan
| | - Y. Yamada
- Department of Veterinary Clinical Pathobiology; Graduate School of Agricultural and Life Sciences, The University of Tokyo; Tokyo Japan
| | - J. K. Chambers
- Department of Veterinary Pathology; Graduate School of Agricultural and Life Sciences, The University of Tokyo; Tokyo Japan
| | - K. Uchida
- Department of Veterinary Pathology; Graduate School of Agricultural and Life Sciences, The University of Tokyo; Tokyo Japan
| | - H. Nakayama
- Department of Veterinary Pathology; Graduate School of Agricultural and Life Sciences, The University of Tokyo; Tokyo Japan
| | - T. Yonezawa
- Department of Veterinary Clinical Pathobiology; Graduate School of Agricultural and Life Sciences, The University of Tokyo; Tokyo Japan
| | - N. Matsuki
- Department of Veterinary Clinical Pathobiology; Graduate School of Agricultural and Life Sciences, The University of Tokyo; Tokyo Japan
| |
Collapse
|
49
|
Kim H, Maeda S, Honda K, Crevier-Buchman L. The Mechanism and Representation of Korean Three-Way Phonation Contrast: External Photoglottography, Intra-Oral Air Pressure, Airflow, and Acoustic Data. Phonetica 2017; 75:57-84. [PMID: 29212078 DOI: 10.1159/000479589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Accepted: 07/18/2017] [Indexed: 06/07/2023]
Abstract
This paper aims to refine our understanding of the speech mechanism and laryngeal features involved in the Korean lenis (/p t k/), aspirated (/ph th kh/), and fortis (/p' t' k'/) plosives. For this purpose we made measurements using a new noninvasive technique called external lighting and sensing photoglottography (ePGG) as well as intra-oral air pressure (Pio) above the glottis, airflow, and acoustic data. From simultaneous recordings of the experimental data, we were ableto quantify the laryngeal-oral coordination of glottal opening and a consonant release, and the covariance of airflow peak and duration of aspiration with glottal opening. The phasing of glottal opening and the 3-way phonation contrast occurs in the order, from early to late, fortis, lenis < aspirated plosives, and the glottal opening peak ranges from low to high in the same order. We also found that a Pio peak, the durations of a high Pio plateau and an oral closure, and F0 are independent of the glottal opening mechanism, varying in the order lenis < aspirated and fortis plosives. From these findings, we propose that the 2 independent patterns are accounted for by the articulator-based features [±spread glottis] and [±tense], respectively.
Collapse
Affiliation(s)
- Hyunsoon Kim
- Department of English, Hongik University, Seoul, Republic of Korea
| | | | | | | |
Collapse
|
50
|
Choi Y, Akazawa N, Nakamura Y, Park I, Tokuyama K, Maeda S. The effects of bright light exposure at night on circadian rhythms and energy metabolism. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|