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Hagiwara K, Kitamura H, Tsuchiya Y, Mizoshiri A, Iwabuchi T. 563 CsA-induced hypertrichosis might be caused in part by inhibition of TGF-β2 expression in dermal papilla cells. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.579] [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: 11/19/2022]
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2
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Tsuchiya Y, Tsujiuchi T, Iwagami T, Ogiwara A, Tanaka Y. Long time psychological distress affected by the Great East Japan Earthquake after four years. Eur J Public Health 2021. [DOI: 10.1093/eurpub/ckab165.611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
On March 11th, 2011, the Great East Japan Earthquake hit the Tohoku area, and more than 15,000 people lost their lives by the tsunami and earthquake. People who survived natural disasters, terrors, or serious diseases reported long-time psychological distress such as PTSD (Post Traumatic Stress Syndrome) or depression. This study aims to elaborate on factors associated with PTSD post the Great East Japan Earthquake after four years.
Methods
Quantitative and qualitative analysis from a questionnaire survey conducted after four years of the earthquake in 2015. The questionnaires included participants' attributes, IES-R scale to evaluate PTSD, loss of their families by tsunami and earthquake, their own tsunami experience, many relocations after the earthquake, lost job after the earthquake. The open-ended question asked them to write about their challenges in their lives and others.
Results
We received 3465 responses. Among those who responded, the IES-R scale was significantly larger in women (n = 1397) (aOR=1.55, p = 0.001) than men (n = 1966). Higher in those with more their own tsunami experience (aOR=1.35, p = 0.014), in those with lost loved ones (aOR=2.1, p < 0.01), and in those with more economic difficulties (aOR=1.6, p < 0.001). In addition, those with less social connectedness (aOR=1.34, p = 0.017) and forced to live separately with family members after the earthquake(aOR=1.36, p = 0.014) were significantly higher in the scale. From a quality analysis, we observed much psychological distress from participants.
Discussion and Conclusions
In this study, more than half in the PTSD risk group reported that they had never cared for mental pain after the earth quake. We overlook PTSD frequently. However, long-range monitoring and care are necessary for those affected by a significant disaster.
Key messages
PTSD after disasters have been overlooked frequently. A long-range monitoring and care are necessary after a significant disaster.
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Affiliation(s)
- Y Tsuchiya
- Advanced Research Center for Human Sciences, Waseda University, Tokorozawa-shi, Japan
| | - T Tsujiuchi
- Faculty of Human Science, Waseda University, Tokorozawa-shi, Japan
| | - T Iwagami
- Faculty of Human Science, Waseda University, Tokorozawa-shi, Japan
| | - A Ogiwara
- Faculty of Human Science, Waseda University, Tokorozawa-shi, Japan
| | - Y Tanaka
- Philosophy, Politics, and Economics, Waseda University, Tokyo, Japan
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3
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Tanaka Y, Tsuchiya Y. Mother's hesitancy of vaccinating their children in Japan – Text analysis survey. Eur J Public Health 2021. [PMCID: PMC8574303 DOI: 10.1093/eurpub/ckab165.566] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Background the world is facing a novel coronavirus pandemic, and the role of vaccination and vaccination acceptance is playing an important role under current vaccination deployment. Japan's vaccination system has progressed these days greatly; however, the non-mandatory vaccination rate for children such as mumps, influenza is still low due to mothers' hesitancy. Given this circumstance, we conducted a qualitative analysis using text analysis methods for Japanese mothers with children about their hesitancy to vaccinate their children in Japan. Methods We used the data of a questionnaire survey first conducted in 2012, where two hundred and twenty-six mothers participated with an average age of 44.7 years (SD ± 5.02). The questionnaire included open-ended questions, where mothers wrote their opinion freely about vaccination about their children. We conducted text analysis focusing on the keywords of ‘hesitancy' (IBM SPSS Text Analytics for Surveys 4.0). Results The keywords that extracted frequently included; vaccination (n = 160), hesitancy (n = 66), difficulty in access to vaccination (n = 57), knowledge/information scarcity (n = 31), fear for side effect (n = 30), complexity of vaccination schedule (n = 23) and government subsidies (n = 20). The most related keyword with hesitancy was; side effect (n = 20), expensive cost (n = 12), and non-mandatory (n = 10). A keyword of having natural immunity was also closely connected (n = 8). Discussion and Conclusions To ameliorate hesitancy among mothers against vaccination of their children, local government notification and subsidy as mandatory vaccination, providing the correct information about diseases and side effects of vaccinations would work as plus factors. Key messages For pandemic preparedness, it is necessary to research vaccine acceptance among children. This research is to explore vaccine hesitancy among mothers and factors related to their unwillingness.
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Affiliation(s)
- Y Tanaka
- Philosophy, Politics, and Economics, Waseda University, Tokyo, Japan
| | - Y Tsuchiya
- Advanced Research Center for Human Sciences, Waseda University, Saitama, Japan
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4
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Inui M, Kajihara Y, Tsuchiya Y, Hosokawa S, Matsuda K, Uchiyama H, Tsutsui S, Baron AQR. Peculiar temperature dependence of dynamical sound speed in liquid Se 50Te 50 by inelastic x-ray scattering. J Phys Condens Matter 2020; 32:214003. [PMID: 31958784 DOI: 10.1088/1361-648x/ab6d8e] [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] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Inelastic x-ray scattering (IXS) measurements were carried out on liquid Se50Te50 at temperatures up to 1323 K to investigate how the atomic dynamics changes with temperature through the semiconductor-metal transition. The acoustic mode was clearly observed in the dynamic structure factor and its energy was determined using a damped harmonic oscillator model. The dynamical sound speed obtained by IXS for [Formula: see text] nm-1 was found to behave similarly to the temperature dependence of ultrasonic sound velocity with a minimum near the semiconductor metal transition. The results can be explained by taking liquid Se50Te50 to be an inhomogeneous liquid consisting of metallic and semiconducting domains whose size is approximately 3 nm. The relaxation time obtained from frequency dependence of the dynamical sound speed was on a picosecond time scale.
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Affiliation(s)
- M Inui
- Graduate School of Integrated Arts and Sciences, Hiroshima University, Higashi-Hiroshima, Hiroshima 7319-8521, Japan
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Saito H, Nakakita Y, Segawa S, Tsuchiya Y. Oral administration of heat-killed Lactobacillus brevis SBC8803 elevates the ratio of acyl/des-acyl ghrelin in blood and increases short-term food intake. Benef Microbes 2019; 10:671-677. [DOI: 10.3920/bm2018.0091] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
It is known that gastrointestinal microbiota, probiotics and heat-killed microbes can regulate intestinal immunity; however, their effect on the secretion of gastrointestinal hormones is unclear. The secretion of gastrointestinal hormones can be mediated by the elevation of intracellular Ca2+ concentration, suggesting that these hormones may act through common mechanisms. We have previously shown that heat-killed Lactobacillus brevis SBC8803 (hk-SBC8803) induced the secretion of serotonin and elevated intracellular Ca2+ concentration in serotonin-producing RIN-14B cells, suggesting that hk-SBC8803 could potentially cause the same effect on other gastrointestinal hormones, including hunger hormone ghrelin. Here, we tested this hypothesis by treating cultured cells and experimental animals with hk-SBC8803 and assessing ghrelin secretion, expression of ghrelin-related genes, and food intake. The results indicated that hk-SBC8803 treatment for 30 min significantly upregulated the secretion of acyl ghrelin (active form) (P=0.046) and mRNA expression of the Syt3 (synaptotagmin 3) gene related to ghrelin exocytosis (P<0.05) in primary mouse stomach cells. In addition, oral administration of 500 mg/kg hk-SBC8803 to rats tended to upregulate acyl ghrelin concentration (P=0.10) and significantly increased the ratio of acyl to des-acyl (inactive) ghrelin (P=0.027) in blood, which corresponded to a tendency of stimulating food intake (P=0.087) at 30 min post-treatment. However, when in order to minimise individual differences we normalised the data on food intake to those on one-day food intake prior to food deprivation, the resultant food intake ratio showed a significant increase (by 5% compared to control; P=0.032) at 30 min after hk-SBC8803 treatment, indicating that hk-SBC8803 administration stimulated rats to take more food during the first meal after fasting. These results suggest that hk-SBC8803 induces short-term ghrelin secretion and transiently increases appetite, which is an important effect for individuals with low energy intake.
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Affiliation(s)
- H. Saito
- Frontier Laboratories for Value Creation, Sapporo Holdings Ltd., 10 Okatome, Yaizu, Shizuoka 425-0013, Japan
| | - Y. Nakakita
- Frontier Laboratories for Value Creation, Sapporo Holdings Ltd., 10 Okatome, Yaizu, Shizuoka 425-0013, Japan
| | - S. Segawa
- Frontier Laboratories for Value Creation, Sapporo Holdings Ltd., 10 Okatome, Yaizu, Shizuoka 425-0013, Japan
| | - Y. Tsuchiya
- Frontier Laboratories for Value Creation, Sapporo Holdings Ltd., 10 Okatome, Yaizu, Shizuoka 425-0013, Japan
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6
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Ebata T, Hirano S, Konishi M, Uesaka K, Tsuchiya Y, Ohtsuka M, Kaneoka Y, Yamamoto M, Ambo Y, Shimizu Y, Ozawa F, Fukutomi A, Ando M, Nimura Y, Nagino M. Randomized clinical trial of adjuvant gemcitabine chemotherapy versus observation in resected bile duct cancer. Br J Surg 2018; 105:192-202. [PMID: 29405274 DOI: 10.1002/bjs.10776] [Citation(s) in RCA: 227] [Impact Index Per Article: 37.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Revised: 10/30/2017] [Accepted: 11/01/2017] [Indexed: 02/06/2023]
Abstract
BACKGROUND Although some retrospective studies have suggested the value of adjuvant therapy, no recommended standard exists in bile duct cancer. The aim of this study was to test the hypothesis that adjuvant gemcitabine chemotherapy would improve survival probability in resected bile duct cancer. METHODS This was a randomized phase III trial. Patients with resected bile duct cancer were assigned randomly to gemcitabine and observation groups, which were balanced with respect to lymph node status, residual tumour status and tumour location. Gemcitabine was given intravenously at a dose of 1000 mg/m2 , administered on days 1, 8 and 15 every 4 weeks for six cycles. The primary endpoint was overall survival, and secondary endpoints were relapse-free survival, subgroup analysis and toxicity. RESULTS Some 225 patients were included (117 gemcitabine, 108 observation). Baseline characteristics were well balanced between the gemcitabine and observation groups. There were no significant differences in overall survival (median 62·3 versus 63·8 months respectively; hazard ratio 1·01, 95 per cent c.i. 0·70 to 1·45; P = 0·964) and relapse-free survival (median 36·0 versus 39·9 months; hazard ratio 0·93, 0·66 to 1·32; P = 0·693). There were no survival differences between the two groups in subsets stratified by lymph node status and margin status. Although haematological toxicity occurred frequently in the gemcitabine group, most toxicities were transient, and grade 3/4 non-haematological toxicity was rare. CONCLUSION The survival probability in patients with resected bile duct cancer was not significantly different between the gemcitabine adjuvant chemotherapy group and the observation group. Registration number: UMIN 000000820 (http://www.umin.ac.jp/).
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Affiliation(s)
- T Ebata
- Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - S Hirano
- Department of Gastroenterological Surgery II, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - M Konishi
- Department of Hepatobiliary-Pancreatic Surgery, National Cancer Centre Hospital East, Kashiwa, Japan
| | - K Uesaka
- Division of Hepato-Biliary-Pancreatic Surgery, Shizuoka Cancer Centre Hospital, Shizuoka, Japan
| | - Y Tsuchiya
- Department of Surgery, Niigata Cancer Centre Hospital, Niigata, Japan
| | - M Ohtsuka
- Department of General Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Y Kaneoka
- Department of Surgery, Ogaki Municipal Hospital, Ogaki, Japan
| | - M Yamamoto
- Department of Surgery, Institute of Gastroenterology, Tokyo Women's Medical University, Tokyo, Japan
| | - Y Ambo
- Department of Surgery, Teine-Keijinkai Hospital, Sapporo, Japan
| | - Y Shimizu
- Department of Gastroenterological Surgery, Aichi Cancer Centre Hospital, Nagoya, Japan
| | - F Ozawa
- Department of Hepato-Biliary-Pancreatic Surgery, Saitama Medical Centre, Saitama Medical University, Saitama, Japan
| | - A Fukutomi
- Division of Gastrointestinal Oncology, Shizuoka Cancer Centre Hospital, Shizuoka, Japan
| | - M Ando
- Centre for Advanced Medicine and Clinical Research, Nagoya University Hospital, Nagoya, Japan
| | - Y Nimura
- Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - M Nagino
- Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
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7
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Tsuchiya Y, Tsujiuchi T, Iwagaki T, Mochida R, Ishikawa N, Katsuragawa T, Masuda K, Taga T, Kojima T, Ogihara A, Negayama K, Kumano H. Difficulties in Life: Four Years after the Great East Japan Earthquake. Eur J Public Health 2018. [DOI: 10.1093/eurpub/cky218.021] [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)
- Y Tsuchiya
- Waseda University, Tokorozawa-shi, Japan
| | | | - T Iwagaki
- Waseda University, Tokorozawa-shi, Japan
| | - R Mochida
- Waseda University, Tokorozawa-shi, Japan
| | - N Ishikawa
- Waseda University, Tokorozawa-shi, Japan
| | | | - K Masuda
- Waseda University, Tokorozawa-shi, Japan
| | - T Taga
- Waseda University, Tokorozawa-shi, Japan
| | - T Kojima
- Waseda University, Tokorozawa-shi, Japan
| | - A Ogihara
- Waseda University, Tokorozawa-shi, Japan
| | - K Negayama
- Waseda University, Tokorozawa-shi, Japan
| | - H Kumano
- Waseda University, Tokorozawa-shi, Japan
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Enomoto Y, Nakatani H, Kondo S, Kasai T, Tsuchiya Y. Drug-induced oral lichenoid reaction during nivolumab therapy. Int J Oral Maxillofac Surg 2018; 48:488-491. [PMID: 30170775 DOI: 10.1016/j.ijom.2018.07.025] [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] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 05/14/2018] [Accepted: 07/17/2018] [Indexed: 11/19/2022]
Abstract
Oral lichenoid reaction, an immune-related adverse event of immunotherapy, has been reported in very few patients receiving anti-programmed cell death receptor-1 (anti-PD-1) therapy. Here, we describe a case of severe stomatitis (grade ≥3 by the Common Terminology Criteria for Adverse Events, version 4.0) accompanied by pharyngolaryngitis that was observed in a patient receiving nivolumab therapy. The stomatitis was diagnosed as drug-induced lichenoid reaction. Nivolumab therapy was discontinued, and the patient was administered systemic prednisolone (1mg/kg). Most of the patient's mucosal changes in the oral cavity and pharyngolarynx resolved within approximately 3 weeks after starting the prednisolone. Clinicians should be aware that severe oral lichenoid reactions can occur in patients receiving anti-PD-1 therapy.
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Affiliation(s)
- Y Enomoto
- Department of Oral and Maxillofacial Surgery, Tochigi Cancer Center, Japan.
| | - H Nakatani
- Department of Otolaryngology, Head and Neck Surgery, National Hospital Organization Fukuyama Medical Center, Japan
| | - S Kondo
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Fukuoka University, Japan
| | - T Kasai
- Department of Medical Oncology, Division of Thoracic Oncology, Tochigi Cancer Center, Japan
| | - Y Tsuchiya
- Department of Oral and Maxillofacial Surgery, Tochigi Cancer Center, Japan
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9
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Inui M, Baron AQR, Kajihara Y, Matsuda K, Hosokawa S, Kimura K, Tsuchiya Y, Shimojo F, Yao M, Tsutsui S, Ishikawa D, Tamura K. Viscoelastic anomaly accompanying anti-crossing behaviour in liquid As 2Se 3. J Phys Condens Matter 2018; 30:28LT02. [PMID: 29873306 DOI: 10.1088/1361-648x/aacab5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We investigate the dynamic structure factor of the melt of the well known glass former, As2Se3, using inelastic x-ray scattering for temperatures, T, [Formula: see text] K and momentum transfers Q from [Formula: see text] nm-1. An anomaly was observed at Q = 2.7 nm-1 ([Formula: see text] K) with, in the context of a simple model, both an abrupt change in frequency and an increased linewidth reminiscent of an anti-crossing in a solid. Comparison with structural information from reverse Monte Carlo modeling of x-ray diffraction data allows us to associate the disappearance of the anomaly at higher temperatures with a drop in the number of mechanical constraints per atom, n mc, to [Formula: see text] reminiscent of the threshold applicable for glass formation in rigidity theory. It is inferred that the surprising jump in the dispersion in the liquid may be correlated with a stiffness transition in a network glass.
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Affiliation(s)
- M Inui
- Graduate School of Integrated Arts and Sciences, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8521, Japan
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10
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Noguchi T, Sarukawa S, Tsuchiya Y, Okada N, Hayasaka J, Sasaguri K, Nishino H, Jinbu Y, Mori Y. Evaluation of postoperative changes in vascularized iliac bone grafts used for mandibular reconstruction. Int J Oral Maxillofac Surg 2018; 47:990-997. [PMID: 29606562 DOI: 10.1016/j.ijom.2018.03.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [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: 04/06/2017] [Revised: 03/02/2018] [Accepted: 03/07/2018] [Indexed: 11/26/2022]
Abstract
Vascularized iliac bone grafts are used for mandibular reconstruction, but the factors affecting graft maintenance are unknown. This study explored the postsurgical changes in vascularized iliac bone grafts in patients who had undergone mandibular reconstruction after segmental resection. The study involved 24 patients (16 men and eight women) with oral tumours or osteoradionecrosis. Thirteen patients required bare bone grafting (BBG) and 11 patients required reconstruction with soft tissue coverage (six with a skin paddle and five with direct closure). The bone graft maintenance rate (with regard to the height of the centre of the graft) was calculated immediately after surgery and at 3, 6, 12, 24, and 36months after surgery. The maintenance rate was significantly lower in the BBG group than in the soft tissue coverage group at 3, 6, 12, 24, and 36months, and in those who were fitted with dentures compared to those who were not at 6, 12, 24, and 36months. Local infection also influenced the maintenance rate, but not significantly so. These findings indicate that the reconstruction technique and denture use can affect the bone graft maintenance rate after mandibular reconstruction with vascularized iliac bone grafts.
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Affiliation(s)
- T Noguchi
- Department of Dentistry, Oral and Maxillofacial Surgery, Jichi Medical University, Tochigi, Japan.
| | - S Sarukawa
- Department of Plastic Surgery, Jichi Medical University, Tochigi, Japan
| | - Y Tsuchiya
- Department of Dentistry, Oral and Maxillofacial Surgery, Jichi Medical University, Tochigi, Japan
| | - N Okada
- Department of Dentistry, Oral and Maxillofacial Surgery, Jichi Medical University, Tochigi, Japan
| | - J Hayasaka
- Department of Dentistry, Oral and Maxillofacial Surgery, Jichi Medical University, Tochigi, Japan
| | - K Sasaguri
- Department of Dentistry, Oral and Maxillofacial Surgery, Jichi Medical University, Tochigi, Japan
| | - H Nishino
- Department of Otolaryngology, Head and Neck Surgery, Jichi Medical University, Tochigi, Japan
| | - Y Jinbu
- Department of Dentistry, Oral and Maxillofacial Surgery, Jichi Medical University, Tochigi, Japan
| | - Y Mori
- Department of Dentistry, Oral and Maxillofacial Surgery, Jichi Medical University, Tochigi, Japan
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Ota K, Harada T, Otsubo K, Fujii A, Tsuchiya Y, Tanaka K, Okamoto I, Nakanishi Y. A new tool to visualize and quantificate activated epidermal growth factor receptor homodimerization with proximity lagation assay in lung cancer. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx672.005] [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: 11/14/2022] Open
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El-Nahass E, El-Habashi N, El-Dakhly KM, Tsuchiya Y, Yanai T. Effect of Mouse Strain on Equine Herpesvirus 9 Infection. J Comp Pathol 2017; 157:67-74. [PMID: 28735674 DOI: 10.1016/j.jcpa.2017.06.002] [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: 12/06/2016] [Revised: 06/05/2017] [Accepted: 06/05/2017] [Indexed: 10/19/2022]
Abstract
The infectivity of equine herpesvirus (EHV)-9 has been studied in different animal models including immunocompromised animals. The current study focused on the infectivity of EHV-9 in different mouse strains (C3H, C57BL, DBA, BALB/c-nu/nu, BALB/c and ICR) by intranasal inoculation of 2 × 106 plaque forming units (PFU). Various organs, including head and lungs, were collected 7 days post infection (dpi) to investigate microscopical lesions and the distribution of EHV-9 antigen. Immunopositivity of tissue sections was scored using ImageJ software. Open reading frame (ORF) 30 expression in lung tissues was quantified using quantitative reverse transcriptase polymerase chain reaction. Pathological examination revealed different degrees of rhinitis in the different mouse strains. Severe rhinitis was detected in C3H and BALB/c-nu/nu strains, moderate rhinitis was observed in C57BL and DBA strains and no lesions were detected in BALB/c mice. Immunopositivity for EHV-9 antigens was detected in the olfactory epithelium of C3H and BALB/c-nu/nu strains. Compared with C57BL, DBA, BALB/c-nu/nu, ICR and BALB/c strains, the C3H strain showed greater expression of EHV-9 antigens in the brain. The proportion of areas with high positive to positive immunoreactivity for EHV-9 were 7.57, 3.42, 3.12, 2.51, 1.79 and 0.03% for C3H, C57BL, DBA, BALB/c-nu/nu, ICR and BALB/c strains, respectively. The proportions of areas with low positive to negative immunoreactivity were 92.42, 96.70, 96.87, 97.48, 98.16 and 99.96%, respectively. The highest relative expression levels for EHV-9 ORF30 in the lungs were in C3H mice. No significant differences in the expression of ORF30 were observed in other strains. In conclusion, of the strains examined, C3H, C57BL, DBA, BALB/c-nu/nu and ICR were the most susceptible to EHV-9 infection, and the BALB/c strain was less susceptible.
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Affiliation(s)
- E El-Nahass
- Department of Veterinary Pathology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef 62511, Egypt
| | - N El-Habashi
- Department of Veterinary Pathology, Faculty of Veterinary Medicine, Kafr El-Sheikh University, Egypt
| | - Kh M El-Dakhly
- Department of Veterinary Parasitology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef 62511, Egypt
| | - Y Tsuchiya
- Department of Veterinary Pathology, Faculty of Applied Biological Science, Gifu University, 1-1 Yanagido, Gifu, Japan
| | - T Yanai
- Department of Veterinary Pathology, Faculty of Applied Biological Science, Gifu University, 1-1 Yanagido, Gifu, Japan.
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13
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Ito K, Sakaguchi T, Tsuchiya Y, Inada A, Nakajima H, Saito R. Gas Crossover Suppression by Controlling Wettability of Cathode Current Collector. ACTA ACUST UNITED AC 2016. [DOI: 10.1149/07514.1107ecst] [Citation(s) in RCA: 3] [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: 11/16/2022]
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14
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Mizuno S, Morii I, Tsuchiya Y, Goto K. Wearing Compression Garment after Endurance Exercise Promotes Recovery of Exercise Performance. Int J Sports Med 2016; 37:870-7. [PMID: 27454135 DOI: 10.1055/s-0042-106301] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The present study examined the effects of wearing a lower-body compression garment (CG) after endurance exercise on recovery of physiological function. 18 males were divided into 2 experiments, the downhill running (n=10, DHR) experiments and the level running (n=8, LR) experiments. Subjects performed 30 min of DHR (gradient: - 10%) or LR (gradient: 0%) at 70% of ˙VO2max with either wearing a CG (CG trial) or normal garment (CON trial) for 24 h after running. Changes in jump performance (counter movement jump; CMJ, rebound jump; RJ, drop jump; DJ), subjective feelings, circumferences of leg, and blood variables (creatine kinase, myoglobin, interleukin-6, high-sensitivity C-reactive protein) were evaluated before exercise, immediately after exercise, 1, 3 and 24 h following exercise. Running economy was evaluated at 24 h following exercise. CMJ height and RJ index were significantly higher in the CG trial than in the CON trial 24 h after running (P<0.05). Although changes in muscle soreness and blood variables were significantly greater in the DHR experiment than in the LR experiment, there was no significant difference between the trials in either experiment. Wearing a CG following endurance exercise facilitated recovery of jump performance under situations with severe exercise-induced muscle damage.
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Affiliation(s)
- S Mizuno
- Graduate School of Sports and Health Science, Ritsumeikan University, Kusatsu, Japan
| | - I Morii
- Graduate School of Sports and Health Science, Ritsumeikan University, Kusatsu, Japan
| | - Y Tsuchiya
- Graduate School of Sports and Health Science, Ritsumeikan University, Kusatsu, Japan
| | - K Goto
- Faculty of Sports and Health Science, Ritsumeikan University, Kusatsu, Japan
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Tsuchiya Y, Shida N, Izumi S, Ogasawara M, Kakinuma W, Tsujiuchi T, Machida K. Factors associated with mothers not vaccinating their children against mumps in Japan. Public Health 2016; 137:95-105. [PMID: 27062068 DOI: 10.1016/j.puhe.2016.03.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [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: 09/03/2014] [Revised: 11/05/2015] [Accepted: 03/02/2016] [Indexed: 10/22/2022]
Abstract
OBJECTIVES In Japan, mumps immunization is not mandatory, and the prevalence of mumps immunization among eligible children is only about 30%, raising concerns about increased risk of meningitis, encephalitis and deafness caused by mumps. In 2011, to understand why families are not voluntarily immunizing their children against mumps, we surveyed mothers who were university graduates to examine the factors and barriers influencing mumps vaccination in Japan. STUDY DESIGN A cross sectional design. METHODS We sent questionnaires including questions on demographic data and vaccination status, barriers and factors for immunizations to university alumnae to recruit participants. Data were analysed by Student's t-test for continuous variables and by univariate and multivariate analysis to obtain the odds ratio and adjusted odds ratio. RESULTS Two hundred and twenty-six mothers with children responded with an average (range) age of 44.7 years (SD = 5.02; 30-55 years). Adjusted odds ratios (aOR) from logistic regression analysis identified fear of harmful side-effects (aOR, 2.55; 95% CI, 1.10 to 5.89), the vaccination not being mandatory (aOR, 3.30; 95% CI, 1.41 to 7.72), perceived non-efficacy (aOR, 6.21; 95% CI, 1.85 to 20.91) and being busy (aOR, 3.30; 95% CI, 1.21 to 9.01) were significantly and inversely associated with mumps vaccination. Recommendations from family doctors (aOR, 0.35; 95% CI, 0.17 to 0.71), living abroad when their children would be vaccinated (aOR, 0.10; 95% CI, 0.02 to 0.68) and the maternal age (aOR, 0.91; 95% CI, 0.85 to 0.96) were significant and positively associated with vaccination. CONCLUSIONS In the absence of mandatory vaccinations, a public education campaign about mumps, their potential consequences and the nature and value of vaccination could improve the prevalence of mumps vaccination among children and prevent the consequences of this disease.
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Affiliation(s)
- Y Tsuchiya
- Advanced Research Center for Human Science, Waseda University, 2-579-15, Mikajima, Tokorozawa, Saitama, Japan.
| | - N Shida
- Advanced Research Center for Human Science, Waseda University, 2-579-15, Mikajima, Tokorozawa, Saitama, Japan
| | - S Izumi
- Faculty of Home Economics, Koriyama Women's University, 3-25-2, Kaisei, Koriyama, Fukushima, Japan
| | - M Ogasawara
- Department of Human Science, Waseda University, 2-579-15, Mikajima, Tokorozawa, Saitama, Japan
| | - W Kakinuma
- Advanced Research Center for Human Science, Waseda University, 2-579-15, Mikajima, Tokorozawa, Saitama, Japan
| | - T Tsujiuchi
- Faculty of Human Science, Waseda University, 2-579-15, Mikajima, Tokorozawa, Saitama, Japan
| | - K Machida
- Faculty of Human Science, Waseda University, 2-579-15, Mikajima, Tokorozawa, Saitama, Japan
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Tsuchiya Y, Matsuo N, Cho H, Tsubouchi K, Kumagai M, Nishii Y, Nanjoh M, Yamamoto T. Vitamin D and vitamin D dependency. Contrib Nephrol 2015; 22:89-100. [PMID: 6967387 DOI: 10.1159/000385991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Administration of large doses of vitamin D2 brought about a marked increase of 25-hydroxyvitamin D in both the patients with vitamin D dependency and hypophosphatemic vitamin D-resistant rickets. During the administration of vitamin D2, increment of 1,25-dihydroxyvitamin D was marked in hypophosphatemic vitamin D-resistant rickets, but far smaller in vitamin D dependency. In the latter, however, the 1,25-dihydroxyvitamin D reached the level close to the normal adult values. 1 alpha-hydroxyvitamin D3 was found 50 approximately 100 times as effective as vitamin D2 in 2 patients with vitamin D dependency (optimum maintenance dose: 0.05 micrograms/kg/day). It was concluded that 1 alpha-hydroxylation in the renal tubules is markedly defective in the patients with vitamin D dependency, but that a large dose of vitamin D2 is able to cause a definite increase in serum concentration of 1,25-dihydroxyvitamin D resulting in improvement of the rickets.
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Katahira K, Yoshikawa T, Enoki H, Teraoka A, Tsuchiya Y. Is the evidence of the Supreme Court Ruling of gefitinib litigation in Japan scientific? Int J Risk Saf Med 2014; 26:227-33. [PMID: 25420764 DOI: 10.3233/jrs-140637] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 11/15/2022]
Abstract
BACKGROUND Plaintiffs of the gefitinib (Iressa) lawsuits in Japan started in 2004 were defeated in the Supreme Court in 2013. The Court judged it was not possible to foresee the outbreak of deaths caused by interstitial pneumonia due to gefitinib from death cases before approval of this drug. OBJECTIVE We attempted to verify validity of this judgment. METHODS We estimated the 95% confidence interval (CI) of the proportion of onset and death cases among 23 onset and 13 death cases occurring from "within 1 week" to "within 4 weeks" from clinical data before approval of this drug using data admitted to the Court. RESULTS For death cases, all of the upper limits of the 95% CI exceeded 50% within 1-4 weeks. This fact suggested that the cases of acute interstitial pneumonia were included in the clinical trial before the approval of gefitinib. CONCLUSION It was possible to foresee the outbreak of death cases after drug approval. This conclusion showed the Court's ruling was not reasonable and was unscientific.
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Affiliation(s)
- K Katahira
- Faculty of Social Welfare, Niigata University of Health and Welfare, Niigata, Japan Institute of Clinical and Social Pharmacy, Saitama, Japan
| | - T Yoshikawa
- Institute of Clinical and Social Pharmacy, Saitama, Japan
| | - H Enoki
- Postgraduate student of Niigata University of Health and Welfare, Niigata, Japan
| | - A Teraoka
- Drug Information Center Asahi, Osaka, Japan
| | - Y Tsuchiya
- Graduate School of Human Science, Waseda University, Tokyo, Japan
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Tsuchiya Y, Kawai S, Tazawa K, Yamagishi H, Arai H, Manabe T, Sekine S, Okumura T, Nagata T, Tsukada K. 251. Is laparoscopy-assisted colectomy superior to open colectomy? Comparison of the long term postoperative course and prognosis. Eur J Surg Oncol 2014. [DOI: 10.1016/j.ejso.2014.08.243] [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: 11/28/2022] Open
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Tsuchiya Y, Sakuraba K, Ochi E. Effect of eccentric contractions of elbow flexor on bone formation and resorption markers. J Sports Med Phys Fitness 2014; 54:651-657. [PMID: 25270785] [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: 06/03/2023]
Abstract
AIM This study aimed to investigate the effects of eccentric contractions (ECs) of the biceps brachii muscle on bone metabolism markers. METHODS Eight untrained subjects (20.0±0.5 years) performed 5 sets of 6 maximal ECs of the elbow flexors with a 2-min rest interval between each set. Blood samples were collected at 6 time points: before (Pre) ECs, immediately after (Post) ECs, and two hours (2 hours), 1 (day 1), 3 (days 3), and 5 days (days 5) after ECs. We measured the levels of the bone formation marker osteocalcin (OC) and the resorption marker tartrate-resistant acid phosphatase 5b (TRACP-5b). In addition, we measured the isometric tetanic torque and the levels of myoglobin (Mb), creatine kinase (CK), blood lactate, and insulin-like growth factor-1 (IGF-1). RESULTS The results showed 1) CK and Mb levels increased significantly by days 3 and 5 (P<0.05); 2) OC levels significantly decreased in Post and 2 hours (P<0.01) and TRACP-5b levels significantly increased in Post (P<0.01); 3) OC positively correlated with the total work output in Post, 2 hours, and days 5 (Post: r=0.79, P<0.05; 2 hours: r=0.82, P<0.01; days 5: r=0.79, P<0.05); and 4) TRACP-5b levels positively correlated with IGF-1 levels (r=0.69, P<0.01). CONCLUSION We conclude that a single bout of ECs of the biceps has a negative effect on bone metabolism in the acute phase.
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Affiliation(s)
- Y Tsuchiya
- Graduate School of Medicine, Juntendo University, Tokyo, Japan - ochi @gen.meijigakuin.ac.jp
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Tsuchiya Y, Sakuraba K, Ochi E. High force eccentric exercise enhances serum tartrate-resistant acid phosphatase-5b and osteocalcin. J Musculoskelet Neuronal Interact 2014; 14:50-57. [PMID: 24583540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We investigated the effects of eccentric contractions (ECs) on bone metabolism markers and the relationship between bone metabolism and skeletal muscle related protein. Seventeen young untrained men were divided into two groups and performed either 60 or 30 maximal ECs. We measured serum levels of osteocalcin (OC), bone alkaline phosphatase, cross-linked N-telopeptide of type I collagen (NTx), and tartrate-resistant acid phosphatase 5b (TRACP-5b), growth hormone (GH), and insulin-like growth factor-1 (IGF-1). Blood samples were collected for up to five days after ECs. OC with 60 ECs were significantly higher than with 30 ECs (2 hours; p<0.05, day 1 and day 5; p<0.01). TRACP-5b with 60 ECs were significantly higher than with 30 ECs (day 3 and day 5; p<0.001). IGF-1 and OC were significantly positively correlated with 60 ECs (2 hours, day 1, and day 5; p<0.05). There were also significant positive correlations between IGF-1 and NTx with 60 ECs (2 hours, p<0.01; day 1, p<0.05). We found that one bout of severe ECs caused increases in OC and TRACP-5b, which promote increased bone metabolism. Our results suggest that contraction-induced IGF-1 may activate OC and NTx in acute response.
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Affiliation(s)
- Y Tsuchiya
- Graduate School of Medicine, Juntendo University, 2-2-26 Hongo, Bunkyo, Tokyo, 113-0033, Japan
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Nakaya I, Iwabuchi M, Tsuchiya Y, Shibagaki Y, Yamaguchi T, Fukuhara S, Oe Y, Yahata M, Soma J, Sato T, Taguma Y. THU0213 Cyclophosphamide has no efficacy in japanese patients with renal vasculitis associated with anti-neutrophil cytoplasmic antibody-positive microscopic polyangiitis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.2178] [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: 11/04/2022]
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Nozu T, Tsuchiya Y, Kumei S, Takakusaki K, Okumura T. Peripheral corticotropin-releasing factor (CRF) induces stimulation of gastric contractions in freely moving conscious rats: role of CRF receptor types 1 and 2. Neurogastroenterol Motil 2013. [PMID: 23205497 DOI: 10.1111/nmo.12050] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [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: 12/17/2022]
Abstract
BACKGROUND Peripheral corticotrophin-releasing factor (CRF) plays an important role in stress-induced alterations of gastrointestinal motility. CRF injected peripherally inhibits gastric emptying, but its effect on gastric contractions has not been clarified in freely moving conscious rats. METHODS Intraluminal gastric pressure waves were measured in freely moving conscious non-fasted rats using the perfused manometric method. We assessed the area under the manometric trace as the motor index (MI), and compared this result with those obtained 1 h before and after drug administration. KEY RESULTS Subcutaneous injection (sc) of CRF (15 μg kg(-1)) increased the MI significantly. Pretreatment with intravenous astressin (100 μg kg(-1)), a non-selective CRF antagonist, blocked the sc CRF (15 μg kg(-1))-induced response, but astressin(2)-B (200 μg kg(-1), sc), a selective CRF receptor type 2 (CRF(2)) antagonist, enhanced the CRF-induced increase in MI significantly. Meanwhile urocortin 2 (15 μg kg(-1), sc), a selective CRF(2) agonist, did not alter the basal MI, but it inhibited the sc CRF (15 μg kg(-1))-induced stimulation of gastric contractions. The intraperitoneal injection of cortagine (30 μg kg(-1)), a selective CRF receptor type 1 (CRF(1)) agonist, mimicked the response induced by sc CRF. CONCLUSIONS & INFERENCES Peripheral CRF stimulates gastric contractions through CRF(1). CRF(2) activation inhibits the response induced by CRF, suggesting that CRF(2) may have a modulatory action to CRF(1) signaling in gastric motor activity.
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Affiliation(s)
- T Nozu
- Department of Regional Medicine and Education, Asahikawa Medical University, Asahikawa, Japan.
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Tsuchiya Y, Takami Y, Okuzaki Y, Sota T. Genetic differences and phenotypic plasticity in body size between high- and low-altitude populations of the ground beetle Carabus tosanus. J Evol Biol 2012; 25:1835-42. [DOI: 10.1111/j.1420-9101.2012.02568.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2012] [Revised: 05/19/2012] [Accepted: 06/05/2012] [Indexed: 11/30/2022]
Affiliation(s)
- Y. Tsuchiya
- Department of Zoology; Graduate School of Science; Kyoto University; Kyoto; Japan
| | - Y. Takami
- Graduate School of Human Development & Environment; Kobe University; Kobe; Japan
| | - Y. Okuzaki
- Department of Zoology; Graduate School of Science; Kyoto University; Kyoto; Japan
| | - T. Sota
- Department of Zoology; Graduate School of Science; Kyoto University; Kyoto; Japan
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Meno H, Inou T, Tanaka M, Tsuchiya Y, Shiga Y, Kobayashi K, Nakamura Y, Ota T, Kubara I. Efficacy and effect on plasma B-type natriuretic peptide concentration of losartan-hydrochlorothiazide for hypertension uncontrolled by losartan-based therapy: subanalysis of a Multicentre Prospective Observational Study. Arzneimittelforschung 2012; 62:414-9. [PMID: 22773432 DOI: 10.1055/s-0032-1316376] [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] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Many patients with hypertension have difficulty achieving their target blood pressure (BP). Therefore combination therapy, for example with an angiotensin II receptor blocker (ARB) and a diuretic, may be recommended. We previously evaluated the efficacy and safety of losartan (LOS) 50 mg - hydrochlorothiazide (HCTZ) 12.5 mg, as well as its effect on the plasma concentration of B-type natriuretic peptide (BNP, a prognostic marker for cardiovascular events), in patients with hypertension uncontrolled by ≥3 months of ARB-based therapy. The present subanalysis used data from patients who received LOS-based therapy before switching to LOS-HCTZ. Efficacy, safety, and changes in blood biochemical variables including BNP were evaluated. After excluding 4 patients with protocol violations, data from 35 patients (aged 36-79 years, mean 63 years; 66% male) were used in the safety analysis. The efficacy analysis used data from the 30 patients who were followed up for 12 months. Systolic/diastolic BP decreased from 156±12/87±11 mmHg at baseline to 125±11/73±10 mmHg at 12 months (p<0.001). After 12 months, half of the patients achieved their target BP as defined by the Japanese Society of Hypertension Guidelines for the Management of Hypertension 2004. In 12 patients with baseline plasma BNP concentration ≥20 pg/mL, BNP decreased from 78.3±18.8 pg/mL to 57.3±17.7 pg/mL (p<0.01). 3 patients experienced adverse events, one of which was cardiovascular. LOS-HCTZ is efficacious, has a good safety profile, and decreases plasma BNP concentration.
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Affiliation(s)
- H Meno
- Department of Cardiology and Internal Medicine, Fukuoka Red Cross Hospital, Fukuoka, Japan.
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Yumoto K, Nifuji A, Rittling S, Tsuchiya Y, Kon S, Uede T, Denhardt D, Hemmi H, Notomi T, Hayata T, Ezura Y, Nakamoto T, Noda M. Osteopontin Deficiency Suppresses Tumor Necrosis Factor-α-Induced Apoptosis in Chondrocytes. Cartilage 2012; 3:79-85. [PMID: 26069621 PMCID: PMC4297182 DOI: 10.1177/1947603511421502] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
OBJECTIVE Apoptosis of chondrocytes in articular cartilage has been observed in rheumatoid arthritis patients. However, molecules involved in such chondrocyte apoptosis in arthritic joints have not been fully understood. We previously observed that apoptosis of chondrocytes is enhanced in a murine arthritis model induced by injection with anti-type II collagen antibodies and lipopolysaccharide (mAbs/LPS), and osteopontin (OPN) deficiency suppresses chondrocyte apoptosis in this arthritis model in vivo. To understand how OPN deficiency renders resistance against chondrocyte apoptosis, we examined the cellular basis for this protection. DESIGN Chondrocytes were prepared from wild-type and OPN-deficient mouse ribs, and tumor necrosis factor (TNF)-α-induced cell death was examined based on lactate dehydrogenase (LDH) release assay and TUNEL assay. RESULTS TNF-α treatment induced LDH release in wild-type chondrocytes, while OPN deficiency suppressed such LDH release in the cultures of these cells. TNF-α-induced increase in the number of TUNEL-positive cells was observed in wild-type chondrocytes, while OPN deficiency in chondrocytes suppressed the TNF-α induction of TUNEL-positive cells. OPN deficiency suppressed TNF-α-induced increase in caspase-3 activity in chondrocytes in culture. Furthermore, OPN overexpression in chondrocytes enhanced TNF-α-induced apoptosis. CONCLUSION These results indicated that the presence of OPN in chondrocytes is involved in the susceptibility of these cells to TNF-α-induced apoptosis.
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Affiliation(s)
- K. Yumoto
- Department of Molecular Pharmacology, Tokyo Medical and Dental University, Tokyo, Japan
| | - A. Nifuji
- Department of Molecular Pharmacology, Tokyo Medical and Dental University, Tokyo, Japan
| | | | - Y. Tsuchiya
- Immuno Biological Laboratory (IBL), Maebashi Gumma, Japan
| | - S. Kon
- Hokkaido University, Sapporo, Japan
| | - T. Uede
- Hokkaido University, Sapporo, Japan
| | | | - H. Hemmi
- Department of Molecular Pharmacology, Tokyo Medical and Dental University, Tokyo, Japan,Medical Top Track (MTT) Program, Tokyo Medical and Dental University, Tokyo, Japan
| | - T. Notomi
- Department of Molecular Pharmacology, Tokyo Medical and Dental University, Tokyo, Japan
| | - T. Hayata
- Department of Molecular Pharmacology, Tokyo Medical and Dental University, Tokyo, Japan,Global Center of Excellence Program, Tokyo Medical and Dental University, Tokyo, Japan,Core to Core Program, Tokyo Medical and Dental University, Tokyo, Japan,Hard Tissue Genome Research Center, Tokyo Medical and Dental University, Tokyo, Japan
| | - Y. Ezura
- Department of Molecular Pharmacology, Tokyo Medical and Dental University, Tokyo, Japan,Global Center of Excellence Program, Tokyo Medical and Dental University, Tokyo, Japan,Core to Core Program, Tokyo Medical and Dental University, Tokyo, Japan,Hard Tissue Genome Research Center, Tokyo Medical and Dental University, Tokyo, Japan
| | - T. Nakamoto
- Department of Molecular Pharmacology, Tokyo Medical and Dental University, Tokyo, Japan,Global Center of Excellence Program, Tokyo Medical and Dental University, Tokyo, Japan,Core to Core Program, Tokyo Medical and Dental University, Tokyo, Japan,Hard Tissue Genome Research Center, Tokyo Medical and Dental University, Tokyo, Japan
| | - M. Noda
- Department of Molecular Pharmacology, Tokyo Medical and Dental University, Tokyo, Japan,Medical Top Track (MTT) Program, Tokyo Medical and Dental University, Tokyo, Japan,Global Center of Excellence Program, Tokyo Medical and Dental University, Tokyo, Japan,Core to Core Program, Tokyo Medical and Dental University, Tokyo, Japan,Hard Tissue Genome Research Center, Tokyo Medical and Dental University, Tokyo, Japan
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Nakamura K, Saito T, Kobayashi R, Oshiki R, Oyama M, Nishiwaki T, Nashimoto M, Tsuchiya Y. C-reactive protein predicts incident fracture in community-dwelling elderly Japanese women: the Muramatsu study. Osteoporos Int 2011; 22:2145-50. [PMID: 20936400 DOI: 10.1007/s00198-010-1425-9] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2010] [Accepted: 09/13/2010] [Indexed: 12/21/2022]
Abstract
SUMMARY In a 6-year cohort study of 751 community-dwelling elderly Japanese women, we found that C-reactive protein (CRP) is a significant predictor of osteoporotic fracture in elderly Asian women, who have significantly lower CRP levels than Caucasians. Mechanisms explaining such an association should be further studied. INTRODUCTION While CRP, a systemic inflammation marker, is thought to be associated with osteoporosis, evidence supporting this claim has been limited. We aimed to assess the association between CRP levels and incident osteoporotic fracture in elderly women. METHODS We conducted a cohort study with a follow-up period of 6 years. The study included 751 Japanese women aged 69 years or older. We measured serum high-sensitivity CRP (hs-CRP) levels as a major predictor. Covariates included age, body mass index, forearm bone mineral density, calcium intake, serum 25-hydroxyvitamin D, postural sway, osteoporosis medication, and physical activity. The primary outcome was incident limb and vertebral fractures. The Cox proportional hazards model was used to calculate the hazard ratio (HR) of fracture. RESULTS Median hs-CRP values in study participants were 0.16 mg/L in the lowest tertile, 0.36 mg/L in the medium tertile, and 1.14 mg/L in the highest tertile. The hs-CRP values in these women were substantially lower than in their Caucasian counterparts. Limb or vertebral fractures occurred in 50 subjects during 4,250 person-years. Low CRP levels were associated with low incidence of limb or vertebral fractures (P for trend = 0.035). The adjusted HRs of fracture for the medium and highest quartiles of hs-CRP levels, compared to the lowest quartile, were 2.22 (95% CI, 1.02-4.84) and 2.40 (95% CI, 1.10-5.24), respectively. CONCLUSIONS CRP is a significant predictor of osteoporotic fracture in elderly Asian women who have substantially lower CRP levels than Caucasians. Mechanisms explaining such an association should be further studied.
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Affiliation(s)
- K Nakamura
- Department of Community Preventive Medicine, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi-dori, Chuo-ku, Niigata, 951-8510, Japan.
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Narita M, Konishi I, Tsuchiya Y. Thermodynamics of liquid-liquid crossover transition in liquid Si15Te85eutectic alloy. EPJ Web of Conferences 2011. [DOI: 10.1051/epjconf/20111501021] [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: 11/14/2022] Open
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Gross ME, Lingk C, Siegrist T, Coleman E, Brown WL, Ueno K, Tsuchiya Y, Itoh N, Ritzdorf T, Turner J, Gibbons K, Klawuhn E, Biberger M, Lai WYC, Miner JF, Wu G, Zhang F. Microstructure and Texture of Electroplated Copper in Damascene Structures. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-514-293] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
ABSTRACTThe transition from Al to Cu for advanced ULSI interconnects involves changes in architecture and deposition technique that will influence the microstructure and texture of the metal. Cu interconnects are typically formed within the confines of pre-patterned trenches and vias using an electroplating process with a sputtered Cu conduction layer deposited over a refractory metalbased diffusion barrier layer. In this paper, we focus on the influence of the barrier layer (PVD Ti/TiN, Ta, TaN, CVD TiN) and the effect of a vacuum break between barrier and conduction layer depositions, on the texture of the Cu lines, as examined by X-ray diffraction pole figure analysis.A preferred (111) orientation was observed for all samples. The samples with no vacuum break between barrier and conduction layer deposition exhibited in plane anisotropy that was particularly pronounced for the Ta and TaN samples compared with the Ti/TiN sample. Focused ion beam images and transmission electron micrographs showed Cu grain size to be on the order of the trench width with a high degree of twinning, and no boundary could be distinguished between the PVD Cu conduction layer and the electroplated Cu.
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Endoh H, Hisakabe M, Kojima Y, Kakimuma F, Tsuchiya Y. Two melts phase separation in the liquid Sb-Sb 2S 3system: critical sound wave propagation and metal-non-metal transition. EPJ Web of Conferences 2011. [DOI: 10.1051/epjconf/20111501019] [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: 11/15/2022] Open
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Kanno Y, Nakamura T, Machida S, Tsuchiya Y, Itami T. NMR investigation of ionic motion in LiI-KI in the liquid state. EPJ Web of Conferences 2011. [DOI: 10.1051/epjconf/20111502006] [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: 11/14/2022] Open
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Nakamura K, Saito T, Oyama M, Oshiki R, Kobayashi R, Nishiwaki T, Nashimoto M, Tsuchiya Y. Vitamin D sufficiency is associated with low incidence of limb and vertebral fractures in community-dwelling elderly Japanese women: the Muramatsu Study. Osteoporos Int 2011; 22:97-103. [PMID: 20333358 DOI: 10.1007/s00198-010-1213-6] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2010] [Accepted: 02/03/2010] [Indexed: 12/25/2022]
Abstract
UNLABELLED Data on the association between vitamin D status and osteoporotic fracture in Asians are sparse. We conducted a 6-year cohort study of 773 community-dwelling elderly Japanese women and found that serum 25-hydroxyvitamin D (25(OH)D) ≥ 71 nmol/L was associated with a reduced risk of osteoporotic limb and vertebral fractures. INTRODUCTION Data on the association between vitamin D status and osteoporotic fracture in Asians are sparse. This study aimed to clarify the association between vitamin D and other markers of nutritional status with the incidence of fracture in elderly Japanese women. METHODS We conducted a cohort study with a 6-year follow-up of 773 community-dwelling women aged 69 years and older. The 6-year follow-up ended in 2009. We assessed serum 25-hydroxyvitamin D, undercarboxylated osteocalcin (an index of vitamin K status), and calcium intake. The primary outcome was incident limb and vertebral fractures. Covariates were forearm bone mineral density (BMD), age, body mass index, osteoporosis treatment, and physical activity. RESULTS The mean serum 25(OH)D concentration was 60.0 nmol/L. Thirty-seven limb fractures and 14 vertebral fractures occurred in 4,392 person-years. Lower forearm BMD was significantly associated with increased incident fracture (P = 0.0242). The adjusted hazard ratios (HR) of fracture for the first quartile (<47.7 nmol/L) and the third quartile (59.2-70.9 nmol/L) of serum 25(OH)D, compared to the fourth quartile (≥71.0 nmol/L), were 2.82 (95% confidence interval (CI), 1.09-7.34) and 2.82 (95%CI, 1.09-7.27), respectively. The pooled adjusted HR was 0.42 (95%CI, 0.18-0.99) when the incidence in the fourth quartile (≥71.0 nmol/L) was compared to the other three quartiles combined (<71.0 nmol/L). Vitamin K status and calcium intake were not associated with incident fracture. CONCLUSIONS Sufficient vitamin D status, i.e., serum 25(OH)D ≥ 71 nmol/L, is associated with low limb and vertebral fracture risk in community-dwelling elderly women.
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Affiliation(s)
- K Nakamura
- Department of Community Preventive Medicine, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi-dori, Chuo-ku, Niigata, 951-8510, Japan.
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Tsuchiya Y, Takayanagi N, Sugiura H, Miyahara Y, Tokunaga D, Kawabata Y, Sugita Y. Lung diseases directly associated with rheumatoid arthritis and their relationship to outcome. Eur Respir J 2010; 37:1411-7. [PMID: 20884744 DOI: 10.1183/09031936.00019210] [Citation(s) in RCA: 147] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The outcome and cause of death of each lung disease directly associated with rheumatoid arthritis (RA-LD) have been poorly investigated. A retrospective study was conducted of 144 patients with RA-LD, in whom the median follow-up period after the initial visit for a respiratory examination was 4.5 yrs. A total of 57 patients were identified with usual interstitial pneumonia (UIP), 31 with bronchiectasis, 16 with nonspecific interstitial pneumonia (NSIP), 11 with bronchiolitis, five with organising pneumonia (OP), five with diffuse alveolar damage (DAD) and 19 with combined disease. The 5-yr survival rates were 36.6% in the UIP group, 87.1% in the bronchiectasis group, 93.8% in the NSIP group, 88.9% in the bronchiolitis group, 60.0% in the OP group and 20.0% in the DAD group. Survival of patients with DAD was worse than that of patients with UIP. Overall, survival of patients with UIP was worse than that of patients with bronchiectasis, NSIP or bronchiolitis. Of the 144 patients, 71 (49.3%) died, of whom 58 (81.7%) died due to respiratory lesions. Of patients with RA-LD, patients with DAD experienced the highest mortality, and the survival of patients with UIP was worse than that of patients with NSIP.
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Affiliation(s)
- Y Tsuchiya
- Department of Respiratory Medicine, Saitama Cardiovascular and Respiratory Center, 1696 Itai, Kumagaya, Saitama 360-0105, Japan.
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Nakamura K, Takahashi S, Oyama M, Oshiki R, Kobayashi R, Saito T, Yoshizawa Y, Tsuchiya Y. Prior nonhip limb fracture predicts subsequent hip fracture in institutionalized elderly people. Osteoporos Int 2010; 21:1411-6. [PMID: 19771487 DOI: 10.1007/s00198-009-1081-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2009] [Accepted: 08/26/2009] [Indexed: 10/20/2022]
Abstract
SUMMARY This 1-year cohort study of nursing home residents revealed that historical fractures of upper limbs or nonhip lower limbs were associated with hip fracture (hazard ratio = 2.14), independent of activities of daily living (ADL), mobility, dementia, weight, and type of nursing home. Prior nonhip fractures are useful for predicting of hip fracture in institutional settings. INTRODUCTION The aim of this study was to evaluate the utility of fracture history for the prediction of hip fracture in nursing home residents. METHODS This was a cohort study with a 1-year follow-up. Subjects were 8,905 residents of nursing homes in Niigata, Japan (mean age, 84.3 years). Fracture histories were obtained from nursing home medical records. ADL levels were assessed by caregivers. Hip fracture diagnosis was based on hospital medical records. RESULTS Subjects had fracture histories of upper limbs (5.0%), hip (14.0%), and nonhip lower limbs (4.6%). Among historical single fractures, only prior nonhip lower limbs significantly predicted subsequent fracture (adjusted hazard ratio, 2.43; 95% confidence interval (CI), 1.30-4.57). The stepwise method selected the best model, in which a combined historical fracture at upper limbs or nonhip lower limbs (adjusted hazard ratio, 2.14; 95% CI, 1.30-3.52), dependence, ADL levels, mobility, dementia, weight, and type of nursing home independently predicted subsequent hip fracture. CONCLUSIONS A fracture history at upper or nonhip lower limbs, in combination with other known risk factors, is useful for the prediction of future hip fracture in institutional settings.
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Affiliation(s)
- K Nakamura
- Department of Community Preventive Medicine, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi-dori, Chuo-ku, Niigata, 951-8510, Japan.
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Abstract
Steady and transient behaviors of protoplasmic streaming in Nitella internodal cell have been investigated for various temperatures from 30 degrees C to near 0 degrees C. It has been found that steady velocity of the streaming linearly decreases with increasing inverse temperature but its proportionality coefficient changes at approximately 10 degrees C. Velocity distribution, which reflects temporal fluctuations of the protoplasmic streaming, is nonGaussian and its half width becomes larger at higher temperatures. On the other hand, recovery of the protoplasmic streaming, which is observed after stopping the streaming with a current stimulus to the internodal cell, has been found to show more clear sigmoidal time courses at higher temperatures.
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Affiliation(s)
- Y Tsuchiya
- Department of Applied Physics, Tokyo Institute of Technology, Oh-okayama, Meguro, Tokyo 152, Japan
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Nakamura K, Oyama M, Takahashi S, Yoshizawa Y, Kobayashi R, Oshiki R, Saito T, Tsuchiya Y. Fracture incidence in nursing homes in Japan. Osteoporos Int 2010; 21:797-803. [PMID: 19618096 DOI: 10.1007/s00198-009-1015-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2009] [Accepted: 06/18/2009] [Indexed: 10/20/2022]
Abstract
UNLABELLED We conducted the first study to determine fracture incidence in institutionalized elderly people in East Asia. Fracture incidence was generally higher than in the general population but was not for all fracture types. Specific fracture prevention strategies for institutionalized people are needed. Ethnic differences in fracture incidence are also discussed. INTRODUCTION The aim of this study was to determine the incidence of fractures in nursing homes in Japan, where fracture is becoming an increasingly problematic health issue. METHODS We conducted a cohort study with a 1-year follow-up. Subjects were 8,905 residents (average age, 84.3 years) in nursing homes. Caregivers assessed activities of daily living levels using Barthel's index, and we collected demographic data of each resident. Fracture diagnosis was based on medical records from the hospitals where patients were admitted. RESULTS Incidence of hip fracture was 14.9 per 1,000 person-years for women and 9.7 for men. Incidence of forearm and upper-arm fractures was 1.9 and 5.1 for women and 0.5 and 2.1 for men, respectively. Hip and upper-arm fracture rates were higher than in the general population, but forearm fracture rates were lower. Hazard ratio of fracture incidence in totally dependent to partially dependent or independent subjects was 0.14 (95%CI 0.05-0.33) for hip fracture and 0.34 (95%CI 0.23-0.50) for all fractures. CONCLUSIONS Fracture incidence in institutionalized elderly people is generally higher but is not higher for all types of fractures than the general population. In addition, totally dependent persons had a much lower risk of hip fracture.
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Affiliation(s)
- K Nakamura
- Department of Community Preventive Medicine, Niigata University Graduate School of Medical and Dental Sciences, Chuo-ku, Niigata, Japan.
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Sato K, Muramatsu T, Tsuchiya Y, Masaoka T, Enokiya Y, Hashimoto S, Shimono M. Proliferation, migration and apoptosis of periodontal ligament cells after tooth replantation. Oral Dis 2010; 16:263-8. [DOI: 10.1111/j.1601-0825.2009.01594.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Tsuchiya Y, Muramatsu T, Masaoka T, Hashimoto S, Shimono M. Effect of the dental adhesive, 4-META/MMA-TBB resin, on adhesion and keratinization of regenerating oral epithelium. J Periodontal Res 2009; 44:496-502. [PMID: 19178645 DOI: 10.1111/j.1600-0765.2008.01146.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [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: 11/29/2022]
Abstract
BACKGROUND AND OBJECTIVE The 4-META/MMA-TBB [4-(2-methacryloxyethyl)trimellitic anhydride/methyl methacrylate-tributylborane] resin is widely used as a dental adhesive. It has also been applied in the dressing of gingival wound surfaces following periodontal surgery. However, its effect on the regeneration and/or cell attachment of the oral epithelium remains to be clarified. To evaluate the effect of the resin applied as a wound dressing, we investigated expression of laminin 5, integrin beta(4) and cytokeratin 14 in regenerating oral epithelium treated with this resin following gingivectomy from the viewpoint of cell attachment and differentiation. MATERIAL AND METHODS The resin was applied to the entire wound surface in rats after gingival surgery, and regenerating epithelium was examined immediately and at 1, 3, 5, 7 and 14 days later. The resin was removed 2 weeks after application in some animals and tissue further examined at 1, 3, 5 and 7 days later. RESULTS Regenerating epithelium under the resin was not keratinized, but became keratinized immediately after removal of the resin. Laminin 5 and integrin beta(4) were immunolocalized in the basal lamina, the internal basal lamina, in marginal cells of the regenerating epithelium and at the resin-regenerating epithelium interface. Cytokeratin 14 localized in the regenerating epithelium underneath the resin, as well as in healthy and regenerated junctional epithelial cells. CONCLUSION These results suggest that this resin covers the wound surface and that the regenerating epithelium biologically adheres to the resin during the initial process of its regeneration.
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Affiliation(s)
- Y Tsuchiya
- Department of Pathology, Tokyo Dental College, Chiba, Japan
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Nakagawa I, Nakamura K, Oyama M, Yamazaki O, Ishigami K, Tsuchiya Y, Yamamoto M. Long-term effects of the Niigata-Chuetsu earthquake in Japan on acute myocardial infarction mortality: an analysis of death certificate data. Heart 2009; 95:2009-13. [DOI: 10.1136/hrt.2009.174201] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Tsuchiya Y, Kanamori E, Standley D, Nakamura H, Kinoshita K. Development of a scoring method for predicting protein complex structures. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308092714] [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: 11/11/2022] Open
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Nakayama R, Itoh H, Hayasaka J, Tsuchiya Y, Matsumoto K, Ohmori M, Noguchi T, Osano H, Jinbu Y, Kusama M. Three cases of the spindle cell carcinoma. Int J Oral Maxillofac Surg 2007. [DOI: 10.1016/j.ijom.2007.09.179] [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]
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Morioka K, Tsuchiya Y, Shirai J. Effect of the serum albumin on replication of porcine reproductive and respiratory syndrome virus in a cell culture. Acta Virol 2007; 51:289-290. [PMID: 18197738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
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Affiliation(s)
- Y. Tsuchiya
- a Department of Physics , University of Niigata, Faculty of Science , Niigata , 950-21 , Japan
| | - S. Noguchi
- b Department of Applied Physics , University of Nagoya, Faculty of Engineering , Nagoya , 464 , Japan
| | - M. Hasegawa
- c The Oarai Branch, The Research Institute for Iron, Steel and Other Metals, Tohoku University, Oarai , Ibaraki , 311-13 , Japan
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Affiliation(s)
- Y. Waseda
- a The Research Institute of Mineral Dressing and Metallurgy. Tohoku University , Sendai , 980 , Japan
| | - S. Tamaki
- b Department of Physics, Faculty of Science , Niigata University , Niigata , 950-21 , Japan
| | - Y. Tsuchiya
- b Department of Physics, Faculty of Science , Niigata University , Niigata , 950-21 , Japan
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Itai K, Asai A, Tsuchiya Y, Onishi M, Kosugi S. How do bioethics teachers in Japan cope with ethical disagreement among healthcare university students in the classroom? A survey on educators in charge. J Med Ethics 2006; 32:303-8. [PMID: 16648283 PMCID: PMC2579418 DOI: 10.1136/jme.2004.011577] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 12/15/2004] [Accepted: 07/22/2005] [Indexed: 05/08/2023]
Abstract
OBJECTIVE The purpose of this study was to demonstrate how educators involved in the teaching of bioethics to healthcare university students in Japan would cope with ethical disagreement in the classroom, and to identify factors influencing them. METHODS A cross sectional survey was conducted using self administered questionnaires mailed to a sample of university faculty in charge of bioethics curriculum for university healthcare students. RESULTS A total of 107 usable questionnaires were returned: a response rate of 61.5%. When facing ethical disagreement in the classroom, coping behaviour differed depending on the topic of discussion, was influenced by educators' individual clear ethical attitudes regarding the topic of discussion, and was independent of many respondents' individual and social backgrounds. Among educators, it was commonly recognised that the purpose of bioethics education was to raise the level of awareness of ethical problems, to provide information about and knowledge of those issues, to raise students' sensitivity to ethical problems, and to teach students methods of reasoning and logical argument. Yet, despite this, several respondents considered the purpose of bioethics education to be to influence students about normative ethical judgments. There was no clear relationship, however, between ways of coping with ethical disagreement and educators' sense of the purpose of bioethics education. CONCLUSIONS This descriptive study suggests that educators involved in bioethics education for healthcare university students in Japan coped in various ways with ethical disagreement. Further research concerning ethical disagreement in educational settings is needed to provide better bioethics education for healthcare students.
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Affiliation(s)
- K Itai
- Department of Biomedical Ethics, Faculty of Medicine, University of Miyazaki, Japan
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Nakamura K, Saito T, Nishiwaki T, Ueno K, Nashimoto M, Okuda Y, Tsuchiya Y, Oshiki R, Muto K, Yamamoto M. Correlations between bone mineral density and demographic, lifestyle, and biochemical variables in community-dwelling Japanese women 69 years of age and over. Osteoporos Int 2006; 17:1202-7. [PMID: 16699737 DOI: 10.1007/s00198-006-0132-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [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: 10/18/2005] [Accepted: 03/29/2006] [Indexed: 10/24/2022]
Abstract
INTRODUCTION A few epidemiologic studies have comprehensively attempted to identify risk factors for low bone mineral density (BMD) in elderly Asian women. The purpose of this study was to identify demographic, lifestyle, and biochemical factors correlated with BMD in elderly Japanese women 69 years of age and over. METHODS The study design was cross-sectional. The subjects were 583 ambulatory women aged 69 years and over, and their average age was 74.3 (SD 4.4) years. Predictor variables were age, reproductive history, anthropometric indices, grip strength, calcium intake, lifestyle information, and serum 25-hydroxyvitamin D, 1,25-dihydroxyvitamin D (1,25(OH)(2)D), osteocalcin (OC), and undercarboxylated osteocalcin (ucOC) values. The outcome variable was forearm BMD measured with a DTX-200 osteometer. RESULTS Simple linear regression analyses showed that BMD was significantly positively associated with body height, weight, body mass index, grip strength, serum albumin concentration, and "housework," and negatively associated with age, years since menopause, age at menarche, number of children, serum 1,25(OH)(2)D concentration, serum OC concentration, and ucOC concentration. The stepwise multiple regression analysis showed that weight (beta=0.00316, SE=0.00028, R(2)=0.180), age (beta=-0.00321, SE=0.00050, R(2)=0.108), log-transformed serum OC (beta=-0.0445, SE=0.0064, R(2)=0.053), log-transformed serum 1,25(OH)(2)D (beta=-0.0401, SE=0.0074, R(2)=0.050), "farmwork" (beta=0.00904, SE=0.00426, R(2)=0.005), and serum 25(OH)D concentration (beta=0.000281, SE=0.000120, R(2)=0.003) were significantly associated with BMD. CONCLUSION It was concluded that body weight is a major predictor of forearm BMD among the factors measured in this study in independent Japanese women 69 years of age and over and that serum 1,25(OH)(2)D concentration may be associated with cortical BMD. Maintenance of body weight is very important for maintaining BMD in this population, unless a large weight aggravates obesity-related diseases. A follow-up study is needed to confirm these findings.
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Affiliation(s)
- K Nakamura
- Department of Community Preventive Medicine, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi-dori, Niigata, 951-8510, Japan.
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Tsuchiya Y, Kinoshita K, Nakamura H. Structural classification and analysis of homo oligomer interfaces of proteins. Acta Crystallogr A 2005. [DOI: 10.1107/s0108767305092779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Miyashita M, Tajiri T, Sasajima K, Makino H, Maruyama H, Nomura T, Futami R, Hagiwara N, Tsuchiya Y, Yamashita K. Response to preoperative chemotherapy affects prognosis in esophageal cancer. Dis Esophagus 2003; 16:99-101. [PMID: 12823206 DOI: 10.1046/j.1442-2050.2003.00301.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The effect of preoperative chemotherapy on prognosis is still controversial. We have investigated the relationship between responses to preoperative chemotherapy and prognosis after curative operations in patients with esophageal squamous cell carcinoma. Thirty-nine patients received preoperative chemotherapy with continuous infusion of 500 mg/m2 of 5-fluorouracil (5-FU) and intravenous injection of 20 mg/m2 of leucovorin every 12 hours for 5 days. On the 5th day alone, 70 mg/m2 of cisplatin was also infused. The effect was evaluated approximately 14 days after the end of one course of chemotherapy. The rates of responders and non-responders were 64.1% and 35.9%, respectively. After an interval of 21-28 days, transthoracic esophagectomy was performed. Significant histological effect by chemotherapy was found in responders compared to non-responders (P < 0.05). Responders had a significantly better prognosis than non-responders by Log-rank test (P < 0.01). This suggests that preoperative chemotherapy may contribute to better prognosis when the tumor is sensitive to chemotherapy.
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Affiliation(s)
- M Miyashita
- Department of Surgery 1, Nippon Medical School, Bunkyo-ku, Tokyo, Japan.
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Nagasao T, Kobayashi M, Tsuchiya Y, Kaneko T, Nakajima T. Finite element analysis of the stresses around fixtures in various reconstructed mandibular models--part II (effect of horizontal load). J Craniomaxillofac Surg 2003; 31:168-75. [PMID: 12818603 DOI: 10.1016/s1010-5182(03)00029-5] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.6] [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: 10/27/2022] Open
Abstract
UNLABELLED AIM OF EXPERIMENT: Having already studied the effect of vertical load (Nagasao et al., 2002), the purpose of this study was to investigate the effect of horizontal load on implants embedded into a virtually reconstructed mandible. MATERIAL AND METHODS Three-dimensional virtual models of various reconstructed mandibles were designed on a PC and 50 N horizontal loads were applied on the cantilever portion of the upper structure. Then, using a finite element analysis, stresses occurring around the implants were calculated, and the directions of the forces that cause the maximum von Mises stresses were evaluated. Finally, the results were compared with those from vertical loading. RESULTS In all models, the maximum stresses occurred around the implants embedded on the premolar region of the loaded side. In addition, the locations at which the maximum von Mises stresses occurred were greatly influenced by the structural character of the loaded side. CONCLUSION When horizontal loads were applied to reconstructed mandibles, the location and direction of the maximum stresses around the dental implants appeared to be influenced much more by the structural characters of the reconstructed mandibles when compared with vertical loads.
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Affiliation(s)
- T Nagasao
- Department of Plastic and Reconstructive Surgery, Keio University Hospital, Shinjyuku-ku Shinanomachi 35, Tokyo, Japan.
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