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Yuri S, Murase Y, Isotani A. Generation of rat-derived lung epithelial cells in Fgfr2b-deficient mice retains species-specific development. Development 2024; 151:dev202081. [PMID: 38179792 DOI: 10.1242/dev.202081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Accepted: 11/29/2023] [Indexed: 01/06/2024]
Abstract
Regenerative medicine is a tool to compensate for the shortage of lungs for transplantation, but it remains difficult to construct a lung in vitro due to the complex three-dimensional structures and multiple cell types required. A blastocyst complementation method using interspecies chimeric animals has been attracting attention as a way to create complex organs in animals, although successful lung formation using interspecies chimeric animals has not yet been achieved. Here, we applied a reverse-blastocyst complementation method to clarify the conditions required to form lungs in an Fgfr2b-deficient mouse model. We then successfully formed a rat-derived lung in the mouse model by applying a tetraploid-based organ-complementation method. Importantly, rat lung epithelial cells retained their developmental timing even in the mouse body. These findings provide useful insights to overcome the barrier of species-specific developmental timing to generate functional lungs in interspecies chimeras.
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Affiliation(s)
- Shunsuke Yuri
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama-cho, Ikoma, Nara 630-0192, Japan
| | - Yuki Murase
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama-cho, Ikoma, Nara 630-0192, Japan
| | - Ayako Isotani
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama-cho, Ikoma, Nara 630-0192, Japan
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2
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Hotta M, Murase Y, Shimizu S, Kusakabe S, Takagaki T, Nikaido T. Color changes in bulk-fill resin composites as a result of visible light-curing. Dent Mater J 2021; 41:11-16. [PMID: 34334507 DOI: 10.4012/dmj.2021-032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
We evaluated twelve commercially available bulk-fill resin composites to determine the colorimetric changes that occurred as a result of the photo-polymerization reaction. Samples of the resin composites were prepared as disks 8 mm in diameter and 3 mm in thickness. A colorimeter was used to measure the color of samples on a black background before and after the polymerization processed had been initiated. As results, each of the photo-initiated bulk-fill resin composites tested except for Beautifil Bulk A showed a significant color difference more than that of conventional resin composites. Bulk Base Flow became darker, whereas Beautifil Bulk Flow became clearly lighter. All resin composites except for Bulk Base Flow became less yellow. Thus, Beautifil Bulk A exhibited the least color change among all the bulk-fill resin composites. However, this color change showed a marked change (NBS units) as observed by the human naked eye.
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Affiliation(s)
| | - Yuki Murase
- Division of Oral Functional Science and Rehabilitation, Department of Operative Dentistry, Asahi University School of Dentistry
| | - Shojiro Shimizu
- Division of Oral Functional Science and Rehabilitation, Department of Operative Dentistry, Asahi University School of Dentistry
| | - Shusuke Kusakabe
- Division of Oral Functional Science and Rehabilitation, Department of Operative Dentistry, Asahi University School of Dentistry
| | - Tomohiro Takagaki
- Division of Oral Functional Science and Rehabilitation, Department of Operative Dentistry, Asahi University School of Dentistry
| | - Toru Nikaido
- Division of Oral Functional Science and Rehabilitation, Department of Operative Dentistry, Asahi University School of Dentistry
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3
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Murase Y, Takeichi T, Tanahashi K, Marumo Y, Suzuki Y, Nakamura S, Akiyama M. Cutaneous extramedullary hematopoiesis in a patient with secondary myelofibrosis due to MPL gene mutation. J Eur Acad Dermatol Venereol 2020; 35:e257-e259. [PMID: 33043481 DOI: 10.1111/jdv.16990] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Y Murase
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - T Takeichi
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - K Tanahashi
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Marumo
- Department of Hematology and Oncology, Nagoya Memorial Hospital, Nagoya, Japan
| | - Y Suzuki
- Department of Pathology and Laboratory Medicine, Nagoya University Hospital, Nagoya, Japan
| | - S Nakamura
- Department of Pathology, Handa City Hospital, Handa, Japan
| | - M Akiyama
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
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Okajima T, Imai H, Murase Y, Kano N, Ogawa Y, Kawaguchi K. Short coupling with high burden of atrial ectopy in twenty-four hour holter recording predicts recurrence of atrial arrhythmia after atrial fibrillation ablation. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Atrial arrhythmia recurrence is experienced in up to 20% of patients after initially receiving a catheter ablation for atrial fibrillation (AF). Therefore, it is important to define predictors of atrial arrhythmia recurrence. Atrial ectopy (AE) with short coupling interval (S-AE) has been reported to be a trigger of AF. On the other hand, high burden of AE has been reported to be a useful predictor of atrial arrhythmia recurrences after AF ablation. Thus, the combination of the incidence of S-AE and AE burden during a 24-hour Holter recording could be a useful predictor of atrial arrhythmia recurrence after AF ablation.
Purpose
To investigate this hypothesis, we performed a retrospective case-controlled study.
Methods
We enrolled 180 patients who underwent their first catheter ablation procedure for AF and performed a 24-hour Holter recording between 90 to 365 days after their ablation procedure. Patients who performed an additional ablation procedure before the Holter recording were excluded. Finally, we analyzed 173 patients (age: 65±10 years, female: 28.3%, non-paroxysmal: 27.7%). The Holter recordings were analyzed by the same experienced technicians. We defined AE as a narrow QRS complex occurring >25% than prior R-R interval, and S-AE as AE occurring >55% earlier than expected. The relationship between the characteristics of AE during the Holter recording and atrial arrhythmia recurrences was investigated.
Results
The Holter recordings were performed at a median of 103 (IQR: 98–138) days after ablation. The median number of AE were 144 (IQR: 54–699) beats per day, and S-AE was recorded in 49 patients (28.3%). Forty-two patients (24.3%) had a recurrence of atrial arrhythmia during a median 488-day follow up period. Patients with S-AE had a recurrence of atrial arrhythmia more frequently than those without S-AE (44.9% vs 16.1%, p<0.001). We found the cut-off point of AE burden as 241 beats per day by the receiver operating characteristic curve with 74% sensitivity and 70% specificity to predict atrial arrhythmia recurrence. We divided the patients into four groups according to the presence or absence of S-AE and high AE burden. In the Kaplan-Meier analysis, patients with S-AE and high AE burden had the highest atrial arrhythmia recurrence rate (Log-rank test: p<0.001). In the Cox multivariate analysis, S-AE with high AE burden was an independent predictor of atrial arrhythmia recurrence (HR: 4.27, 95% CI: 2.32–7.85, p<0.001).
Conclusion
For AF patients who underwent their first catheter ablation, S-AE (>55% earlier than expected) with high AE burden (>241 beats per day) during the 24-hour Holter recording predicted recurrences of atrial arrhythmia. These results can help to develop follow-up strategies after AF ablation.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
| | - H Imai
- Komaki City Hospital, Komaki, Japan
| | - Y Murase
- Komaki City Hospital, Komaki, Japan
| | - N Kano
- Komaki City Hospital, Komaki, Japan
| | - Y Ogawa
- Komaki City Hospital, Komaki, Japan
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Yamamoto J, Suwa T, Murase Y, Tateno S, Mizutome H, Asatsuma-Okumura T, Shimizu N, Kishi T, Momose S, Kizaki M, Ito T, Yamaguchi Y, Handa H. ARID2 is a pomalidomide-dependent CRL4 CRBN substrate in multiple myeloma cells. Nat Chem Biol 2020; 16:1208-1217. [PMID: 32958952 DOI: 10.1038/s41589-020-0645-3] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 08/10/2020] [Indexed: 12/15/2022]
Abstract
The immunomodulatory drug (IMiD) thalidomide and its derivatives lenalidomide and pomalidomide are therapeutic agents used in the treatment of multiple myeloma. Although pomalidomide offers considerable clinical benefits to patients with lenalidomide-resistant multiple myeloma, the molecular mechanisms underlying its superior efficacy remain unclear. Here we show that ARID2, a component of the polybromo-associated BAF (PBAF) chromatin-remodeling complex, is a pomalidomide-induced neosubstrate of CRL4CRBN. BRD7, another subunit of PBAF, is critical for pomalidomide-induced ARID2 degradation. ARID2 is involved in transcriptional regulation of pomalidomide target genes including MYC. Pomalidomide is more effective than lenalidomide in degrading ARID2 and is capable of inhibiting MYC expression and proliferation in lenalidomide-resistant cell lines. Notably, ARID2 expression is associated with a poor prognosis and is higher in chemoresistant minimal residual disease (MRD) populations, and in patients with relapsed/refractory multiple myeloma. These findings suggest that ARID2 is a promising target for overcoming lenalidomide resistance in patients with multiple myeloma.
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Affiliation(s)
- Junichi Yamamoto
- Department of Chemical Biology, Tokyo Medical University, Shinjuku, Japan.,School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Japan
| | - Tetsufumi Suwa
- School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Japan
| | - Yuki Murase
- School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Japan
| | - Shumpei Tateno
- School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Japan
| | - Hirotaka Mizutome
- School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Japan
| | | | - Nobuyuki Shimizu
- Department of Chemical Biology, Tokyo Medical University, Shinjuku, Japan
| | - Tsutomu Kishi
- Department of Chemical Biology and Applied Chemistry, Nihon University, Koriyama, Japan
| | - Shuji Momose
- Department of Pathology, Saitama Medical Center, Saitama Medical University, Kawagoe, Japan
| | - Masahiro Kizaki
- Department of Hematology, Saitama Medical Center, Saitama Medical University, Kawagoe, Japan
| | - Takumi Ito
- Department of Chemical Biology, Tokyo Medical University, Shinjuku, Japan.,PRESTO, JST, Kawaguchi, Japan
| | - Yuki Yamaguchi
- School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Japan.
| | - Hiroshi Handa
- Department of Chemical Biology, Tokyo Medical University, Shinjuku, Japan.
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Murase Y, Kotake H, Kusakabe S, Okuyama K, Tamaki Y, Hotta M. Use of new scratch test and tensile test for evaluation of bond strength of selfadhesive flowable resin composite for repair of artificial tooth erosion. Dent Mater J 2020; 39:435-443. [PMID: 31932547 DOI: 10.4012/dmj.2019-009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The purpose of this study was to use a new scratch test and tensile test to evaluate the bond strength between artificial erosive enamel or dentin and self-adhesive resin composites as a coating material. Coronal enamel or dentin surface was exposed to an erosive cycle (artificial saliva [AS], pH:7.0 for 6.5 h and acidic carbonated beverages for 5 min, alternated 3 times per day) for the eroded-surface or stored in AS for the remineralized-surface. Two self-adhesive flowable resin composites, Fusio and LLB-CR6 (prototype), and a conventional flowable resin composite, BEAUTIFIL FLOW with self-etching primer system, Clearfil Mega Bond, were applied to enamel or dentin surfaces; and then the bond strengths were measured. For the eroded-surface, there were no significant differences in bonding strength among all materials, as assessed by the new scratch test. Thus, these self-adhesive flowable resin composites might be useful for coating materials on acid-eroded tooth surfaces.
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Affiliation(s)
- Yuki Murase
- Division of Oral Functional Science and Rehabilitation, Department of Operative Dentistry, Asahi University School of Dentistry
| | - Hirotomo Kotake
- Division of Oral Functional Science and Rehabilitation, Department of Operative Dentistry, Asahi University School of Dentistry
| | - Shusuke Kusakabe
- Division of Oral Functional Science and Rehabilitation, Department of Operative Dentistry, Asahi University School of Dentistry
| | - Katsushi Okuyama
- Division of Oral Functional Science and Rehabilitation, Department of Dental Materials Science, Asahi University School of Dentistry
| | - Yukimichi Tamaki
- Division of Oral Functional Science and Rehabilitation, Department of Dental Materials Science, Asahi University School of Dentistry
| | - Masato Hotta
- Division of Oral Functional Science and Rehabilitation, Department of Operative Dentistry, Asahi University School of Dentistry
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7
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Murase Y, Takeichi T, Matsumoto T, Sakakibara A, Akiyama M. A juvenile male case of dermatofibrosarcoma protuberans on the breast. Clin Exp Dermatol 2019; 45:111-113. [PMID: 30820997 DOI: 10.1111/ced.13938] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/08/2018] [Indexed: 11/29/2022]
Affiliation(s)
- Y Murase
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - T Takeichi
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - T Matsumoto
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - A Sakakibara
- Division of Dermatology, Anjo Kosei Hospital, Anjo, Japan
| | - M Akiyama
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
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8
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9
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Anzai T, Aerni R, Wasko M, Mura F, Horikawa SI, Sato SI, Murase Y, Hatakeyama H. FDA SEND process streamlining and implementation – CT-compatible simulated study. Toxicol Lett 2018. [DOI: 10.1016/j.toxlet.2018.06.938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Ashida K, Murase Y, Miyagawa N, Okano K, Mori A. Polymerization of Furylthiazoles with Palladium-Catalyzed Direct Arylation Polycondensation. BCSJ 2017. [DOI: 10.1246/bcsj.20170027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Kana Ashida
- Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501
| | - Yuki Murase
- Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501
| | - Naoki Miyagawa
- Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501
| | - Kentaro Okano
- Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501
| | - Atsunori Mori
- Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501
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13
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Mori A, Murase Y, Ashida K, Tanaka S, Okano K. Synthesis of Furan-Oxazole Conjugated Fluorescent Materials from Biomass-Derived Furfural through Cross-Coupling Reactions. HETEROCYCLES 2016. [DOI: 10.3987/com-15-s(t)9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Maeda S, Wada T, Iwamoto T, Murase Y, Mitarai S, Sugawara I, Kato S. Beijing family Mycobacterium tuberculosis isolated from throughout Japan: phylogeny and genetic features. Int J Tuberc Lung Dis 2010; 14:1201-1204. [PMID: 20819269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023] Open
Abstract
To estimate the current population genetic structure of Mycobacterium tuberculosis in Japan, phylogenetic traits were analysed for 237 Beijing family strains isolated from tuberculosis patients throughout the country. Unlike previous reports from other countries, the ancient Beijing sublineage was predominant throughout Japan. Clustering analysis based on JATA-VNTR (Japan Anti-Tuberculosis Association variable numbers of tandem repeats), a specialised set of VNTR for the discrimination of Japanese M. tuberculosis strains, revealed high similarity of the modern Beijing sublineage strains, irrespective of their geographic origin. JATA-VNTR might be useful for the phylogenetic classification in populations where ancient Beijing strains are frequently isolated.
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Affiliation(s)
- S Maeda
- The Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Kiyose, Tokyo, Japan.
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15
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Mori A, Konnai S, Yamada S, Hidano A, Murase Y, Ito T, Takano A, Kawabata H, Onuma M, Ohashi K. Two novel Salp15-like immunosuppressant genes from salivary glands of Ixodes persulcatus Schulze tick. Insect Mol Biol 2010; 19:359-365. [PMID: 20201978 DOI: 10.1111/j.1365-2583.2010.00994.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Salp15, a 15-kDa tick salivary gland protein, is known for several suppressive activities against host immunity and critical functions for the transmission of Lyme borrelia in Ixodes scapularis and Ixodes ricinus, the major vectors found in North America and Western Europe. Salp15 inhibits the activation of cluster of differentiation (CD)4(+)T-cells through the repression of T-cell receptor (TCR)-triggered calcium fluxes and interleukin (IL)-2 production. Furthermore, Salp15 adheres to the spirochaeta and specifically interacts with its outer surface protein C. The binding of Salp15 to Borrelia burgdorferi protects it from antibody-mediated killing in vitro. The aim of this study is to identify the Salp15 genes in Ixodes persulcatus Schulze, the specific vector for human Lyme borreliosis in Japan. Two cDNA clones encoding the Salp15-like sequence were obtained from salivary glands of fed female ticks. These genes encode 135- and 132-amino acid proteins, designated Salp15 Iper-1 and Salp15 Iper-2, respectively, both having signal peptide sequences and predicted to be secretory proteins. Salp15 Iper-1 and -2 showed 51.8 and 68.2% similarity to I. scapularis Salp15, respectively. Reverse transcriptase PCR analysis showed that Salp15 Iper genes were expressed specifically in the salivary glands throughout life cycle stages of the ticks and were up-regulated by blood feeding. In the I. persulcatus-derived sequences, the C-terminal part, which is the binding domain to the CD4 molecule of T-cells in I. scapularis Salp15, was well conserved. In the future, it will be necessary to analyse immunosuppressive functions of I. persulcatus Salp15 and their interaction with Borrelia spp. in Japan.
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Affiliation(s)
- A Mori
- Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
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Unno K, Shibata R, Izawa H, Hirashiki A, Murase Y, Yamada T, Kobayashi M, Noda A, Nagata K, Ouchi N, Murohara T. Adiponectin acts as a positive indicator of left ventricular diastolic dysfunction in patients with hypertrophic cardiomyopathy. Heart 2009; 96:357-61. [DOI: 10.1136/hrt.2009.172320] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Murase Y, Asai T, Katanasaka Y, Sugiyama T, Shimizu K, Maeda N, Oku N. A novel DDS strategy, "dual-targeting", and its application for antineovascular therapy. Cancer Lett 2009; 287:165-71. [PMID: 19616372 DOI: 10.1016/j.canlet.2009.06.008] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2008] [Revised: 03/25/2009] [Accepted: 06/08/2009] [Indexed: 10/20/2022]
Abstract
Dual-targeting liposomes modified with Ala-Pro-Arg-Pro-Gly (APRPG) and Gly-Asn-Gly-Arg-Gly (GNGRG) peptides were developed. They remarkably associated to growing human umbilical vein endothelial cells (HUVECs) compared with single-targeting liposomes modified with APRPG or GNGRG. Doxorubicin (DOX) encapsulated in the dual-targeting liposomes significantly suppressed the growth of HUVECs compared with that in single-targeting liposomes. The dual-targeting liposomes containing DOX strongly suppressed tumor growth in Colon26 NL-17 carcinoma-bearing mice. Confocal microscopic data indicated that this anticancer effect was brought by the association of these liposomes to angiogenic vessels in the tumor. These findings suggest that "dual-targeting" would be a hopeful method for targeting therapies.
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Affiliation(s)
- Yuki Murase
- Department of Medical Biochemistry and Global COE Program, Graduate School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
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Muro Y, Sugiura K, Nitta Y, Mitsuma T, Hoshino K, Usuda T, Hayashi K, Murase Y, Shimizu M, Matsuo H. Scoring of reflux symptoms associated with scleroderma and the usefulness of rabeprazole. Clin Exp Rheumatol 2009; 27:15-21. [PMID: 19796556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
OBJECTIVE The high frequency of gastroesophageal reflux disease (GERD) as a complication of scleroderma (systemic sclerosis, SSc) calls for treatment with powerful acid suppressants such as proton pump inhibitors (PPI). The present study used a GERD-specific questionnaire to assess the symptoms of GERD in SSc patients, and examine the effectiveness of rabeprazole (RPZ) for treating the symptoms of GERD. METHODS The Frequency Scale for the Symptoms of GERD (FSSG), a medical questionnaire developed in Japan for evaluating GERD, and the Visual Analogue Scale (VAS) were used to evaluate GERD symptoms and the degree of pain, respectively, in 151 SSc subjects. These tools were also used to assess the effect of 8 weeks' treatment with the PPI RPZ (10 mg/day). RESULTS Data on age and gender, and FSSG and VAS scores before treatment and after 4 and 8 weeks' RPZ treatment, were available for 84 subjects. The mean FSSG score was 13.9+/-9.7 before treatment, 8.3+/-8.1 after 4 weeks of treatment, and 7.0+/-7.0 after 8 weeks of treatment; the score reduction was significant (p<0.001) indicating the effectiveness of RPZ in improving subjective GERD symptoms. The VAS scores revealed a significant improvement in pain after both 4 and 8 weeks compared with baseline scores. Six subjects experienced adverse effects and five discontinued the analysis during the period. CONCLUSION Administration of RPZ 10 mg/day is effective for the control of the symptoms of GERD associated with SSc. In addition to assessing the symptoms of GERD, the FSSG questionnaire can be used to evaluate the therapeutic effect of drugs.
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Affiliation(s)
- Y Muro
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan.
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Ohkado A, Nagamine M, Murase Y, Uchimura K, Kaguraoka S, Tatsumi Y, Yamada N, Ohmori M, Maeda S, Maeda H, Kato S, Mori T, Ishikawa N. Molecular epidemiology of Mycobacterium tuberculosis in an urban area in Japan, 2002-2006. Int J Tuberc Lung Dis 2008; 12:548-554. [PMID: 18419891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023] Open
Abstract
SETTING Shinjuku City, Tokyo, Japan. OBJECTIVE To evaluate the status of transmission of Mycobacterium tuberculosis in Shinjuku City to allocate resources efficiently and effectively for a successful tuberculosis (TB) control programme. DESIGN Observational descriptive study combining the genotype data of M. tuberculosis with TB patient profiles. RESULTS The genotype clustering rate was significantly higher in males (adjusted odds ratio [aOR] 1.94, 95%CI 1.04-3.65, P = 0.038), patients aged <40 years (aOR 2.09, 95%CI 1.17-3.71, P = 0.012) and the homeless (aOR 2.72, 95%CI 1.42-5.20, P = 0.002), and was lower for the foreign-born (aOR 0.21, 95%CI 0.06-0.76, P = 0.017). Among 45 genotype clusters containing 152 TB patients, 26 clusters containing 102 patients (67.1%) were composed of a mix of homeless and non-homeless patients. One of the mixed clusters included an 8-month-old infant born in Japan. CONCLUSION The study revealed that M. tuberculosis transmission occurred more frequently among the homeless than in non-homeless persons. However, transmission by casual contact between the homeless and the general population was also shown to occur.
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Affiliation(s)
- A Ohkado
- Research Institute of Tuberculosis, Japan Anti-Tuberculosis Association, Kiyose, Japan.
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Sunagawa K, Ooshiro T, Murase Y, Hazama R, Nagamine I. Mechanisms Controlling Feed Intake in Large-type Goats Fed on Dry Forage. Asian Australas J Anim Sci 2007. [DOI: 10.5713/ajas.2007.1182] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Murase Y, Imagawa A, Hanafusa T, Iwahashi H, Uchigata Y, Kanatsuka A, Kawasaki E, Kobayashi T, Shimada A, Shimizu I, Maruyama T, Makino H. Fulminant type 1 diabetes as a high risk group for diabetic microangiopathy--a nationwide 5-year-study in Japan. Diabetologia 2007; 50:531-7. [PMID: 17235525 DOI: 10.1007/s00125-006-0575-y] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2006] [Accepted: 11/23/2006] [Indexed: 11/29/2022]
Abstract
AIMS/HYPOTHESIS The aim of the present study was to assess the development of microangiopathy in patients with fulminant type 1 diabetes, a novel subtype of type 1B diabetes. MATERIALS AND METHODS In a nationwide survey, we followed 41 patients with fulminant type 1 diabetes and 76 age- and sex-matched patients with type 1A diabetes for 5 years. The following data were recorded every 12 months after the onset of diabetes: seven-point blood glucose concentrations, HbA1c level, urinary albumin excretion, serum C-peptide level, blood pressure, daily dosages of insulin, frequency of severe hypoglycaemic episodes, and neurological and fundoscopic examination. RESULTS The 5-year cumulative incidence of microangiopathy was 24.4% in fulminant type 1 diabetes and 2.6% in type 1A diabetes. In longitudinal studies using the Kaplan-Meier method, the cumulative incidence of each form of microangiopathy was significantly higher in fulminant type 1 diabetes than in type 1A diabetes; retinopathy was 9.8% vs 0% (p=0.014), nephropathy 12.2% vs 2.6% (p=0.015) and neuropathy 12.2% vs 1.3% (p=0.010), respectively. Mean HbA1c levels were similar in the fulminant and type 1A diabetes groups during the follow-up periods. However, the mean M-value, mean insulin dosages and the frequency of severe hypoglycaemic episodes were significantly higher, and the mean postprandial C-peptide level was significantly lower in the fulminant type 1 diabetes group. CONCLUSIONS/INTERPRETATION These data suggest that patients with fulminant type 1 diabetes are a high-risk subgroup for diabetic microangiopathy associated with the lack of endogenous insulin secretion from the onset of diabetes.
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Affiliation(s)
- Y Murase
- First Department of Internal Medicine, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki, and Department of Metabolism/Diabetes and Clinical Nutrition, Nagasaki University Hospital of Medicine and Dentistry, Japan
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Murase Y, Nagakawa J, Yamamoto N. In-beam fatigue behavior of 20% cold-worked 316 stainless steel at 300 °C. Fusion Engineering and Design 2006. [DOI: 10.1016/j.fusengdes.2005.06.369] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Murase Y, Kobayashi J, Asano A, Yamaaki N, Yonezawa K, Muramoto H, Mabuchi H. Effects of raloxifene on adipocytokines in Japanese osteoporotic postmenopausal women with and without type 2 diabetes. Horm Metab Res 2006; 38:130-3. [PMID: 16523415 DOI: 10.1055/s-2006-925140] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Y Murase
- Department of Molecular Genetics of Cardiovascular Disorders, Graduate School of Medical Science, Kanazawa University, Ishikawa, Japan.
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Kobayashi J, Kusunoki M, Murase Y, Kawashiri M, Higashikata T, Miwa K, Katsuda S, Takata M, Asano A, Nohara A, Inazu A, Mabuchi H. Relationship of lipoprotein lipase and hepatic triacylglycerol lipase activity to serum adiponectin levels in Japanese hyperlipidemic men. Horm Metab Res 2005; 37:505-9. [PMID: 16138264 DOI: 10.1055/s-2005-870318] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
OBJECTIVE The aim of this study was to determine how lipoprotein lipase (LPL) and hepatic triacylglycerol lipase (HTGL) activity relate to serum adiponectin levels. RESEARCH DESIGN AND METHODS Fifty-five hyperlipidemic Japanese men were recruited for this study. LPL and HTGL activity in post-heparin plasma (PHP) was measured using Triton X-100 emulsified-[14C] triolein. The remaining activity in the presence of 1M NaCl was defined as HTGL activity. Serum adiponectin levels were determined by an enzyme-linked immunosorbent assay system. RESULT LPL activity had a positive relationship with HDL2, but had no relation with HDL3, while HTGL had positive relationship with HDL3, but had no relationship with HDL2. LPL activity showed a positive relationship [r = 0.345, p = 0.010] to serum adiponectin levels, while and HTGL activity showed an inverse relationship [r = - 0.365 p = 0.006]. Multiple regression analysis with LPL and HTGL as dependent variables and age, BMI, serum adiponectin and the homeostasis model assessment of insulin resistance (HOMA-IR) as independent variables showed LPL and HTGL's association to adiponectin did not persist after adjustments for these covariants. However, the association of LPL activity to HOMA-IR was found to persist after adjustments of age, BMI, and serum adiponectin. CONCLUSIONS There was a co-linearity between insulin sensitivity and adiponectin as well as insulin sensitivity and LPL/HTGL activity.
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Affiliation(s)
- J Kobayashi
- Department of Lifestyle-related disease, Kanazawa University Graduate School of Medical Science, Takara-machi 13-1, Japan.
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Naganawa T, Ishihara Y, Iwata T, Koide M, Ohguchi M, Ohguchi Y, Murase Y, Kamei H, Sato N, Mizuno M, Noguchi T. In Vitro Biocompatibility of a New Titanium-29Niobium-13Tantalum-4.6Zirconium Alloy With Osteoblast-Like MG63 Cells. J Periodontol 2004; 75:1701-7. [PMID: 15732874 DOI: 10.1902/jop.2004.75.12.1701] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Titanium-29niobium-13tantalum-4.6zirconium (TiNb) has recently been developed as a new implant material. TiNb is composed of non-toxic elements and has a lower modulus of elasticity than the other titanium alloys. However, its biocompatibility has not been adequately characterized. The aim of this study was to evaluate the biocompatibility of TiNb using an osteoblast-titanium co-culture system. METHODS MG63 cells were cultured on three kinds of titanium disks: TiNb, pure titanium (pTi), and titanium-6aluminum-4vanadium (TiAl), prepared with two different surfaces, a polished and acid-etched surface and a machined-grooved surface. The surface topography and roughness were evaluated by scanning electron microscopy (SEM). After 48 hours culture, the number of proliferating cells and prostaglandin E2 (PGE2) production in the culture supernatant were determined. RESULTS There was no significant difference in surface roughness among the three titanium disks with a polished and acid-etched surface. After 48 hours of culture, the number of cells was significantly reduced on pTi and TiAl compared to TiNb and the control. PGE2 production was significantly higher on pTi than on TiAl, TiNb, and the control. We further examined the effect of surface roughness on PGE2 production using machine-grooved titanium disks. While pTi and TiAl stimulated the production of PGE2 depending on surface roughness, roughened TiNb did not affect PGE2 production. CONCLUSIONS These results suggest that TiNb may exhibit favorable biocompatibility because it has an efficient surface topography for cell proliferation, and the level of PGE2 production does not depend on surface roughness. We conclude that TiNb may be useful as an implant material.
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Affiliation(s)
- T Naganawa
- Department of Periodontology, School of Dentistry, Aichi-Gakuin University, Nagoya-shi Aichi, Japan
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Murase Y, Araki Y, Mizuno S, Kawaguchi C, Naito M, Yoshizawa M, Araki Y. Pregnancy following chemical activation of oocytes in a couple with repeated failure of fertilization using ICSI: Case report. Hum Reprod 2004. [DOI: 10.1093/humrep/deh570] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Murase Y, Okahashi N, Koseki T, Itoh K, Udagawa N, Hashimoto O, Sugino H, Noguchi T, Nishihara T. Possible involvement of protein kinases and Smad2 signaling pathways on osteoclast differentiation enhanced by activin A. J Cell Physiol 2001; 188:236-42. [PMID: 11424090 DOI: 10.1002/jcp.1113] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Bone tissues reportedly contain considerable amounts of activin A and follistatin, an activin A-binding protein. In the present study, we found that follistatin strongly inhibited osteoclast formation in cocultures of mouse bone marrow cells and primary osteoblasts induced by 1alpha,25 dihydroxyvitamin D(3), prostaglandin E(2), and interleukin-1alpha. Antibody aganist activin A also inhibited the osteoclast formation. Furthermore, activin A synergistically stimulated osteoclast differentiation mediated by receptor activator NF-kappaB ligand (RANKL). RT-PCR analysis revealed that osteoblasts produced not only activin A but also follistatin. Western blot analysis of a panel of phosphorylated proteins revealed that activin A stimulated the phosphorylation of p44/42 mitogen activated protein (MAP) kinase (ERK1/2) and p38 MAP kinase in macrophage colony-stimulating factor-dependent bone marrow macrophages (M-BMMPhis). In addition, phosphorylation of Smad2 was observed in M-BMMPhis stimulated with activin A. These findings indicate that the phosphorylation of p44/42 MAP kinase, p38 MAP kinase, and Smad2 is involved in activin A-enhanced osteoclast differentiation induced by RANKL. Taken together, these results suggest that both activin A and follistatin produced by osteoblasts may play an important role in osteoclast differentiation through MAP kinases and Smad2 signaling pathways.
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Affiliation(s)
- Y Murase
- Department of Periodontology, Aichi Gakuin University, Nagoya, Japan
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Okahashi N, Murase Y, Koseki T, Sato T, Yamato K, Nishihara T. Osteoclast differentiation is associated with transient upregulation of cyclin-dependent kinase inhibitors p21(WAF1/CIP1) and p27(KIP1). J Cell Biochem 2001; 80:339-45. [PMID: 11135363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
Osteoclasts, bone-resorbing multinucleated cells, develop from monocyte-macrophage lineage cells in the presence of osteoclast differentiation factor (ODF, also called RANKL/TRANCE/OPGL) and macrophage colony-stimulating factor (M-CSF). M-CSF-dependent bone marrow macrophages (M-BMMPhis) from mouse bone marrow cells have been shown to differentiate into osteoclast-like multinucleated cells (OCLs) in the presence of soluble ODF/RANKL (sODF/RANKL) and M-CSF within 3 days. In this study, we found that stimulation of M-BMMPhis with sODF/RANKL induced a transient expression of cyclin-dependent kinase inhibitors (CDK inhibitors) p21(WAF1/CIP1) and p27(KIP1) by 24 h. The CDK inhibitor proteins disappeared by 48 h. Tumor necrosis factor alpha (TNF-alpha), which is reported to stimulate OCL differentiation, stimulated p21(WAF1/CIP1) and p27(KIP1) expression in M-BMMPhis as well. However, M-CSF alone did not stimulate the expression of the two CDK inhibitors. To clarify the role of p21(WAF1/CIP1) and p27(KIP1) in osteoclastogenesis, accumulation of these CDK inhibitors was aborted by antisense oligonucleotides. Treatment with p21(WAF1/CIP1) antisense oligonucleotide alone, or p27(KIP1) antisense oligonucleotide alone, showed a limited inhibitory effect on OCL formation. However, treatment with a mixture of these two antisense oligonucleotides strongly inhibited OCL formation. These results suggest that a combined modulation of the CDK inhibitors p21(WAF1/CIP1) and p27(KIP1) may be involved in osteoclast differentiation induced by ODF/RANKL.
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Affiliation(s)
- N Okahashi
- Department of Oral Science, National Institute of Infectious Diseases, Tokyo, Japan
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Watarai Y, Satoh H, Matubara M, Asakawa K, Kamaguchi H, Nagai S, Murase Y, Yokoyama M, Kimura G, Tamura K, Sugisaki Y. Comparison of urine cytology between the ileal conduit and Indiana pouch. Acta Cytol 2000; 44:748-51. [PMID: 11015974 DOI: 10.1159/000328556] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
OBJECTIVE To compare the cytomorphologic features of urine obtained from two different kinds of urinary diversions constructed after total bladder resection. STUDY DESIGN The smears of urine from 11 ileal conduits and 6 Indiana pouches were evaluated. All patients underwent total bladder resection due to transitional cell carcinoma (TCC) or other kinds of cancer before urine diversion. RESULTS The cytologic features of Indiana pouch urine include degenerated, small, round cells without columnar cells derived from intestinal epithelium. In ileal conduit urine, well-preserved columnar cells and degenerated, small, round cells were frequently observed. The columnar cells in ileal conduit urine exhibited cytologic features that should be distinguished from TCC cells. CONCLUSION The method of reconstructing the urinary tract is important in urine cytology from urine diversions because the cytomorphologic features of urine are different between the two kinds of urinary diversions. Since columnar cells in ileal conduit urine might lead to misdiagnosis as TCC, special consideration is required to examine ileal conduit urine.
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Affiliation(s)
- Y Watarai
- Division of Surgical Pathology, Nippon Medical School Hospital, Tokyo, Japan
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Murase Y, Wakasugi T, Yagi K, Mabuchi H. Deterioration of glycemic control after long-term treatment with troglitazone in nonobese type 2 diabetic patients. Diabetes Care 2000; 23:131-2. [PMID: 10857989 DOI: 10.2337/diacare.23.1.131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Koide M, Murase Y, Yamato K, Noguchi T, Okahashi N, Nishihara T. Bone morphogenetic protein-2 enhances osteoclast formation mediated by interleukin-1alpha through upregulation of osteoclast differentiation factor and cyclooxygenase-2. Biochem Biophys Res Commun 1999; 259:97-102. [PMID: 10334922 DOI: 10.1006/bbrc.1999.0715] [Citation(s) in RCA: 90] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Bone morphogenic protein-2 (BMP-2) is a member of the transforming growth factor beta (TGF-beta) superfamily. While BMP-2 is capable of inducing bone formation ectopically, little is known about its role on osteoclastogenesis. In this study, we examined the effect of BMP-2 on osteoclast-like multinucleated cell (OCL) formation in cocultures of osteoblast-like cells and hematopoietic cells of bone marrow origin. BMP-2 alone did not stimulate OCL formation in this culture system; however, it strongly enhanced OCL formation in a dose-dependent fashion in the presence of interleukin-1alpha (IL-1alpha). Western blot analysis showed that a simultaneous addition of BMP-2 and IL-1alpha synergistically enhanced cyclooxygenase-2 (COX-2) expression in osteoblast-like cells. Moreover, Northern blot analysis revealed that the level of osteoclast differentiation factor (ODF) mRNA increased by treatment with BMP-2 and IL-1alpha in osteoblast-like cells. It is noted that BMP-2 alone did cause an increase in the expression of both COX-2 and ODF genes. The stimulatory effect of BMP-2 was abolished by adding nonsteroidal anti-inflammatory drugs, such as indomethacin and a selective COX-2 inhibitor NS-398. Addition of NS-398 inhibited the expression of the ODF gene in osteoblast-like cells treated with BMP-2 and IL-1alpha. These results indicated that the combination of BMP-2 and IL-1alpha stimulated osteoblast-like cells to elevate the expression of both COX-2 and ODF genes, resulting in an enhanced OCL formation. Since BMP-2 alone induced the expression of COX-2 and ODF genes in osteoblast-like cells, it appears to be one of the regulating factors of osteoclastogenesis.
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Affiliation(s)
- M Koide
- Department of Oral Science, National Institute of Infectious Diseases, Tokyo, Japan
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Abstract
22Rn activity concentrations in water collected from 163 private wells and 14 springs in Tokyo were measured with a liquid scintillation spectrometer using a modified integral counting method. The activity concentrations of 222Rn range from 0.2 to 22.9 Bq/L and average 4.8 Bq/L. The errors due to the air luminescence counts and the interferences from 220Rn and 219Rn are discussed and evaluated. 222Rn samples of 0.2 Bq/L can be assayed within an overall uncertainty of 3.1%. The liquid scintillation method involving agitation of the sample water directly with a liquid scintillation cocktail was compared with the present method and evaluated.
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Affiliation(s)
- Y Murase
- Laboratory for Radiopharmaceutical Chemistry, Kyoritsu College of Pharmacy, Tokyo, Japan
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Abstract
The aim of the present study was to reevaluate the prenatal production of specific IgE for eggs and milk and, in those cases, to determine whether there is a relation to the amount of maternal egg and milk intake. Total and specific IgEs from 160 cord blood-samples were determined by immunoassays using a paramagnetic particle solid phase and an enzyme-mediated chemiluminescent reaction for signal detection. The levels of cord blood IgE for total, egg, and milk were 0.63 +/- (SD) 1.10 IU/ml, 0.020 +/- 0.055, and 0.036 +/- 0.053 IU/ml, respectively. IgE levels specific to egg and milk over 0.03 IU/ml were observed in 33 and 70 out of 160 cases, respectively. To address whether the maternal intake of eggs and milk affects the level of cord blood IgEs, all mothers except 9 were interviewed, and the amount of eggs and milk taken during pregnancy was recorded. No correlation was seen between egg and milk intakes and cord blood IgE levels. Our data demonstrate a high incidence of the prenatal production of specific IgE for eggs and milk which is independent of maternal egg and milk intakes.
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Affiliation(s)
- M Furuhashi
- Department of Obstetrics and Gynecology, Handa City Hospital, Aichi, Japan
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Ohmae Y, Karaho T, Hanyu Y, Murase Y, Kitahara S, Inouye T. [Effect of posture strategies on preventing aspiration]. Nihon Jibiinkoka Gakkai Kaiho 1997; 100:220-6. [PMID: 9071122 DOI: 10.3950/jibiinkoka.100.220] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The purpose of this study was to determine the effect of postural change on preventing aspiration, and the types of swallowing disorder that were influenced by posture. Ninety-five patients that were examined by aspiration of barium during videofluoroscopic examination of oropharyngeal swallow assumed one of four postures (chin down, head rotation, chin down + head rotation, and head back to chin down). Postural strategies were successful in eliminating aspiration in 68(72%) of the 95 patients. Twenty five of the 68 patients, however, needed an additional change in bolus volume to eliminate aspiration. Effective postures eliminating aspiration were chin down for 43 patients, head rotation for 10 patients, chin down + head rotation for 12 patients, and head back to chin down for 3 patients. The successes rates of posture changes for each swallowing abnormality were 76% for reduced tongue base retraction, 74% for delay in triggering pharyngeal swallow, 74% for reduced laryngeal elevation, 73% for laryngeal paralysis, 68% for inefficient oral transit, and in 57% for cricopharyngeal dysfunction. Among individuals with cricopharyngeal dysfunction or with than three swallowing motility problems, the frequency of unsuccessful swallow despite postural change was significantly higher than that of successful swallow. These results indicated that the posture strategies in addition to control of bolus volume could prevent aspiration in more than 70% of patients, but the efficacy of posture techniques differed with the different types of swallowing disorder identified as causing the aspiration, and suggested that the posture strategies were less beneficial in individuals with cricopharyngeal dysfunction or exhibiting multiple swallowing disorders.
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Affiliation(s)
- Y Ohmae
- Department of Otolaryngology, JSDF Yokosuka Hospital, Yokosuka
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Kawai H, Aoyama T, Murase Y, Tamura C, Imaizumi A. A causal relationship between Bordetella pertussis and Bordetella parapertussis infections. Scand J Infect Dis 1996; 28:377-81. [PMID: 8893402 DOI: 10.3109/00365549609037923] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Bordetella parapertussis is isolated during the late stages of pertussis outbreaks and occasionally from patients infected with pertussis. The relationship between Bordetella pertussis and B. parapertussis was investigated in mice with monoinfections and mixed infections. Four groups of 10 2-week-old suckling mice were studied: mice born to mice vaccinated against pertussis during pregnancy and unvaccinated controls consequently did and did not receive antipertussis toxin (PT) antibody transcolostrally. The mice were infected transnasally with B. parapertussis strain 422 and 2 identical groups were infected transnasally with B. parapertussis strain 422 and B. pertussis strain 18-323. Bacterial colonization of the lungs and trachea was studied at 1, 2, and 3 weeks after challenge. No persistent colonization by B. parapertussis of the lungs or trachea of monoinfected suckling mice were observed. Persistent colonization by B. parapertussis was observed when suckling mice that received anti-PT antibody transcolostrally were infected with both species. These findings are consistent with the clinical characteristics of B. parapertussis. The results of this study demonstrate that B. pertussis infection facilitates B. parapertussis infection.
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Affiliation(s)
- H Kawai
- Department of Pediatrics, Keio University, School of Medicine, Tokyo, Japan
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Kawai H, Aoyama T, Goto A, Iwai H, Murase Y. Evaluation of pertussis treatment with erythromycin ethylsuccinate and stearate according to age. Kansenshogaku Zasshi 1994; 68:1324-9. [PMID: 7829900 DOI: 10.11150/kansenshogakuzasshi1970.68.1324] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Although erythromycin estolate has been fully assessed for pertussis treatment, the evaluation of erythromycin ethylsuccinate and stearate, the main erythromycin preparations used in Japan and the US, is inadequate. We evaluated these preparations to establish an appropriate treatment for pertussis according to age. Sixty-six patients with culture-confirmed pertussis were treated with erythromycin administered at a dosage of 40-50 mg/kg/day (maximum, 1.2 g/day). Negative culture was obtained in 39% (15/38) of patients aged 0-2 years within one week and in 71% (27/38) within two weeks, in 78% (7/9) of those aged 3-15 years within one week and in 100% (9/9) within two weeks. All 12 adult patients had a negative culture within one week. The efficacy of erythromycin for the eradication of B. pertussis was significantly lower in children aged 0-2 years than in older children. In conclusion, it is desirable to administer erythromycin for three weeks to children aged 0-2 years, two weeks to those aged 3-15 years and one week to adults.
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Affiliation(s)
- H Kawai
- Department of Pediatrics, School of Medicine, Keio University, Tokyo, Japan
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Homma Y, Murase Y, Handa K. Absolute liquid scintillation counting of35S and45Ca using a modified integral counting method. J Radioanal Nucl Chem 1994. [DOI: 10.1007/bf02163601] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Aoyama T, Iwata T, Iwai H, Murase Y, Saito T, Akamatsu T. Efficacy of acellular pertussis vaccine in young infants. J Infect Dis 1993; 167:483-6. [PMID: 8421187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
A prospective study of a pertussis outbreak in a residential facility was done. Among 19 residents aged < or = 2 years, 10 children were unimmunized and 9 were immunized with acellular pertussis vaccines. Of the 10 unimmunized children, 7 acquired laboratory-confirmed pertussis (four-fold titer rise, positive culture, or both); of these, 6 developed typical symptoms. Eight of the 9 immunized children acquired laboratory-confirmed infections, and 1 of these developed typical symptoms. No difference in infection was noted between the unimmunized and immunized groups (7/10 vs. 8/9, respectively), but a significant difference was observed in the development of symptoms (6/10 vs. 1/9, P < .05). Also, the isolation rate of Bordetella pertussis seemed to differ between the two groups (6/10 vs. 2/9, P = .12). In this population, acellular pertussis vaccine did not prevent infection with B. pertussis but protected most young infants from the onset of clinical symptoms.
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Affiliation(s)
- T Aoyama
- Department of Pediatrics, Kawasaki Municipal Hospital, Japan
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Abstract
A survey was conducted of 89 households in each of which at least one patient with culture-confirmed pertussis had been detected. The source of infection was found to be an adult in 10 (11.2%) of the 89 households, and the rate of secondary attack was 19 (10.3%) of 185. Furthermore, a laboratory study disclosed 17 adults with subclinical pertussis; the subclinical infection rate was 17 (25.0%) of 68. When compared with pertussis in young children, the adult illness was generally less severe and had different clinical features. Adult pertussis showed neither leukocytosis nor lymphocytosis, but it produced anti-pertussis toxin antibody more quickly and higher levels of anti-filamentous hemagglutinin and agglutinin antibodies, and showed stronger growth inhibition of Bordetella pertussis. Although adult pertussis is usually unrecognized because of its different clinical and laboratory features, it is a significant health threat that requires some measures for disease control.
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Affiliation(s)
- T Aoyama
- Department of Pediatrics, Kawasaki Municipal Hospital, Japan
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Masunaga H, Takahira R, Murase Y, Tsuda E, Sawai T. [Pharmacokinetics and the time course of pharmacodynamics of recombinant human erythropoietin (SNB-5001)]. Nihon Yakurigaku Zasshi 1991; 98:143-50. [PMID: 1916542 DOI: 10.1254/fpj.98.2_143] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Pharmacokinetics and the time course of pharmacodynamics of recombinant erythropoietin (SNB-5001) were investigated. The plasma concentration of SNB-5001 reached Cmax at 6-7 hr after the subcutaneous injection and gradually decreased. Most of the SNB-5001 in plasma disappeared at 48 hr. Serum erythropoietin activity changed similarly to plasma SNB-5001 concentration. It was indicated that SNB-5001 moves into the plasma and organs having intact bio-activity after its injection. The decrease in serum iron and increase in unsaturated iron binding capacity (UIBC) began at 8 hr after the injection. Both the trough point of serum iron decrease and the peak point of UIBC increase were 24 hr after the injection. Each value recovered to the initial level at 72 hr. Total iron binding capacity did not change. Increase in reticulocytes began at 24 hr and reached the peak at 72-96 hr after the injection of SNB-5001. Reticulocytes count recovered to the initial level at 120 hr. The pharmacodynamics time course after the subcutaneous injection of SNB-5001 was the same as that after the intravenous injection. It was indicated that SNB-5001 reached an effective plasma level at the earlier absorption phase after the subcutaneous injection.
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Affiliation(s)
- H Masunaga
- Research Institute of Life Science, Snow Brand Milk Products Co., Ltd., Tochigi, Japan
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Mori M, Agata N, Murase Y, Ohta M. [Molecular epidemiology of Vibrio cholerae O-1 from outbreak and sporadic patients in Nagoya in 1989]. Kansenshogaku Zasshi 1991; 65:833-7. [PMID: 1919114 DOI: 10.11150/kansenshogakuzasshi1970.65.833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Enterotoxigenic strains of Vibrio cholerae O-1 biotype eltor, isolated from three sporadic cases of cholera in Nagoya in 1989 and an outbreak of cholera in Nagoya in 1989 were analyzed for their similarities. All isolates of V. cholerae O-1 were indistinguishable in bacteriophage types, serovars, biovars and drug resistance patterns. Because the epidemiological investigation based on a primary structure of chromosomal DNA is more reliable, we isolated chromosomal DNA from these isolates and compared electrophoretic patterns of restriction endonuclease-digested DNA fragments. Furthermore, Southern hybridization of the cholera toxin gene was performed. Since no difference among six strains in these sporadic was observed, it was strongly suggested that both the independent cases and the outbreak of cholera were caused by the same strain.
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Affiliation(s)
- M Mori
- Nagoya City Health Research Institute
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Aoyama T, Goto A, Iwai H, Murase Y, Iwata T, Takeuchi Y, Tonooka H. [Simple and efficient method for clinical isolation of Bordetella pertussis]. Kansenshogaku Zasshi 1991; 65:319-25. [PMID: 2071951 DOI: 10.11150/kansenshogakuzasshi1970.65.319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Commercially available Amies transport medium with charcoal and three isolation media were tested to assess their efficiency in the clinical isolation of B. pertussis. First, the isolation rates of B. pertussis were compared between direct inoculation of nasopharyngeal specimens and inoculation after stored in Amies transport medium for 8 hours or less. The comparative isolation rates were 81% both (35 of 43 specimens from 29 patients) for direct inoculation and transport medium. Second, nasopharyngeal specimens were incubated for 5 days at 35 degrees C on the three media; Bordet-Gengou Medium (BG) with 5 micrograms of CEX per ml, Cyclodextrin Solid Medium (CSM) with 5 micrograms of CEX per ml, and Charcoal Agar with 40 micrograms of CEX per ml. The organism was detected from 44 nasopharyngeal specimens from 20 patients on at least one of the three tested media. The comparative isolation rates were 91% (40 of 44) on BG with 5 micrograms of CEX per ml, 93% (41 of 44) on CSM with 5 micrograms of CEX per ml, and 91% (40 of 44) on CA with 40 micrograms of CEX per ml. Although no differences in the isolation rates were observed among the three media, the appearance of the colonies was earlier by one day on BG than the rest of the two media. The detection of B. pertussis was occasionally easier on CA than the rest of the two because of its higher suppression for nasopharyngeal flora. CSM has its advantage in that it does not need any blood and can be prepared at anytime. Also, the shelf life of these three media proved to be at least one month when stored at 10 degrees C. We conclude that the clinical isolation of B. pertussis was highly successful with the following simple procedure: nasopharyngeal specimens stored in Amies transport medium and inoculated on one of the three media, BG, CSM, or CA, and then incubated for 5 days at 35 degrees C.
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Affiliation(s)
- T Aoyama
- Department of Pediatrics, School of Medicine, Keio University
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Koizumi Y, Iseki M, Aoyama T, Murase Y, Ishitobi A, Iwata T. [Diphtheria antitoxin levels in Japanese adults (10-20 years after the last vaccination)]. Kansenshogaku Zasshi 1990; 64:1525-9. [PMID: 2074369 DOI: 10.11150/kansenshogakuzasshi1970.64.1525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The serum diphtheria antitoxin levels in Japanese adults were investigated and the persistence of diphtheria toxoid effect was evaluated. The subjects consisted of 56 volunteers (20-31 years of age) who had received regular inoculations of diphtheria and pertussis vaccine (I and II or III phases). They had been immunized according to the Vaccination Law (old version) revised in 1958. The length of time after the last inoculation of diphtheria toxoid was speculated to range from 10 to 20 years. Serum diphtheria antitoxin was determined by passive hemagglutination method. Antitoxin level was 0.025 HAU/ml in 1 subject (1.8%), 0.05 in 2 (3.6%), 0.1 in 2 (3.6%), 0.2 in 8 (14.3%), 0.4 in 7 (12.5%), 0.8 in 12 (21.4%), 1.6 in 7 (12.5%) and more than 1.6 in 17 (30.4%). Results indicated that 55 of 56 (98.2%) possessed a higher level than the prophylaxis standard (0.05 HAU/ml). Since the current Vaccination Law prescribes a lower amount and fewer inoculations than the old law, the number of adults possessing prophylactic antitoxin level may decrease in the future. Further investigation of antitoxin level in adults needs to be continued.
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Affiliation(s)
- Y Koizumi
- Department of Pediatrics School of Medicine, Keio University
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Abstract
An outbreak of pertussis occurred in one room of a residential facility where 19 children aged 5 to 36 months were residing. They were prospectively surveyed to estimate the efficacy of acellular pertussis vaccine. Among the 19 residents, 9 were immunized with acellular pertussis vaccine. Among the 19 residents, 9 were immunized with acellular DTP vaccine and 10 were unimmunized. The spread of pertussis was surveyed bacteriologically and serologically for 2 months. Among the 9 immunized, 7 children acquired the laboratory-confirmed pertussis and 1 of the 7 developed the typical symptoms (whooping or paroxysmal coughing attack lasting for 14 days or more). Among the 10 unimmunized, 7 children acquired the laboratory-confirmed pertussis and 6 of the 7 developed the typical symptoms. There was no difference in the rate of secondary infection (7/9:7/10), but there was a significant difference in the rate of development of the typical symptoms (1/7:6/7 p less than 0.05). The point estimate of protective efficacy of the acellular DTP vaccine against typical pertussis was (6/10 - 1/9)/(6/10) x 100 = 81%. It was concluded from these findings that acellular DTP vaccine could not prevent the infection of Bordetella pertussis, but could prevent the development of the typical symptoms.
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Abstract
Nine children, 1 to 13 years of age, with HBeAg positive chronic hepatitis B received transfer factor (T.F.) monotherapy for 3 to 17 months, and were monitored by check-ups every six months from serum HBeAg, anti-HBe and GPT. In 12 months, 4 subjects became HBeAg negative and had normal serum GPT. In 22 to 48 months, 6 of the nine subjects had negative HBeAg and normal GPT, 2 had positive HBeAg and high GPT values. The remaining 1 subject who was observed for six months after T.F. therapy remained HBeAg positive with a high GPT values. No side effects were observed. These preliminary observations may indicate beneficial effects of T.F. on the natural course of chronic hepatitis B in childhood, though the ultimate effects awaits longer and well controlled clinical trials.
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Murase Y, Kamei S, Hoshikawa T. Heart rate and metabolic responses to participation in golf. J Sports Med Phys Fitness 1989; 29:269-72. [PMID: 2635259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Five healthy middle-aged men were asked to perform 18 holes of golf. Heart rate was measured throughout the play, and blood samples were compared before and after play. Oxygen uptake during play was estimated from their heart rate response during a treadmill-walking test. Mean heart rate was 108 (range 92-121) beats/min, which corresponded to 38 (range 35-41) %VO2max. Caloric cost of golf is 4-6 kcal/min and total energy expenditure was estimated more than 960 kcal during 18 holes. Blood glucose decreased and FFA increased following 18 holes of play. Golfing seems to be a suitable sport for middle-aged and elderly persons to enhance energy expenditure.
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Abstract
Acellular pertussis vaccines, which have been used in Japan since 1981, vary in antigenic constituents among manufacturers. First, to assess the immunogenicity by manufacturer and patient age, 161 children aged 3 months to 2 years were immunized by acellular pertussis vaccine from one of three Japanese manufacturers, Biken, Takeda, or Kitasato. Anti-pertussis toxin antibody responses for children immunized with Takeda and Kitasato vaccines were comparable with patients with pertussis in the convalescent stage, and anti-pertussis toxin antibody response for Biken vaccine was far higher than those of convalescing patients. Anti-filamentous hemagglutinin antibody responses for the children given the three vaccines were far higher than those of the patients. Weak serotype 1.3 agglutinin responses were observed only in children administered the Takeda vaccine. Comparing these antibody responses among various age groups, the immunogenicity of acellular vaccines in children aged 3 to 6 months was comparable with children aged 2 years. Second, to assess the manufacturer-specific efficacy, 495 households of patients with pertussis were surveyed from 1981 to 1988. The estimated efficacy of the acellular pertussis vaccines in children aged 2 to 8 years was 82%, and there were no major differences in the secondary attack rates among children immunized with acellular pertussis vaccine from each manufacturer, ie, 12.5% (1/8) for Biken, 11.1% (2/18) for Takeda, and 5.9% (1/17) for Kitasato. We conclude from these two studies that similar efficacy was observed in children aged 2 years or older for acellular pertussis vaccines from the three manufacturers, which produced anti-pertussis toxin antibody responses comparable with patients with pertussis and far higher antifilamentous hemagglutinin antibody responses than in the convalescing patients, and that age did not affect the immunogenicity of acellular vaccines.
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Affiliation(s)
- T Aoyama
- Department of Pediatrics, Keio University, School of Medicine, Tokyo, Japan
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