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Furuoka K, Fukumoto T, Masuda Y, Tanigawa A, Kosaka H, Nagano T. Segmental cutaneous leukocytoclastic vasculitis associated with herpes zoster: a case report and literature review. Dermatol Reports 2023; 15:9709. [PMID: 38327588 PMCID: PMC10848643 DOI: 10.4081/dr.2023.9709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 04/03/2023] [Indexed: 02/09/2024] Open
Abstract
Varicella zoster virus (VZV) infection may cause large or medium vessel vasculitis, including granulomatous arteritis of the nervous system and central nervous system vasculitis. However, small vessel vasculitis, such as cutaneous leukocytoclastic vasculitis (LCV) associated with localized cutaneous VZV infection, herpes zoster, is uncommon. Herein, we present the case of a 75- year-old man with segmental leukocytoclastic vasculitis associated with herpes zoster on the leg. To the best of our knowledge, there are four cases of segmental leukocytoclastic vasculitis in herpes zoster reported in the English literature; we compared our case with these previous reports. Our review of five patients suggests that most patients were immunosuppressed. We also found that the leg is susceptible to LCV associated with herpes zoster. Anti-viral treatment was effective for LCV as well as herpes zoster. Prior reports have proposed etiologies inducing LCV; for example, immune complexes are mediated by vessel wall damage. In support of this, histopathology in our case showed a C3-positive reaction with the small vessel walls in the dermis in direct immunofluorescence. Although the mechanism of LCV associated with herpes zoster remains unclear, we should consider LCV while diagnosing and treating patients with herpes zoster, especially immunosuppressed patients.
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Affiliation(s)
- Keiko Furuoka
- Division of Dermatology, Department of Internal Related, Kobe University Graduate School of Medicine
- Kobe City Medical Center General Hospital, Japan
| | - Takeshi Fukumoto
- Division of Dermatology, Department of Internal Related, Kobe University Graduate School of Medicine
| | | | | | | | - Tohru Nagano
- Kobe City Medical Center General Hospital, Japan
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2
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Shimizu T, Haro K, Tagawa M, Hirata M, Iwano S, Kosaka H, Yamamoto Y. Bilateral ballism as limb-shaking transient ischemic attacks treated with unilateral carotid artery stent placement. J Stroke Cerebrovasc Dis 2022; 31:106781. [PMID: 36156444 DOI: 10.1016/j.jstrokecerebrovasdis.2022.106781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Revised: 09/07/2022] [Accepted: 09/10/2022] [Indexed: 10/31/2022] Open
Abstract
Bilateral limb-shaking transient ischemic attack (LS-TIA) is a rare disease involving carotid artery stenosis, characterized by ballism-like involuntary movements of the arms and legs. We describe the case report of a male patient in his 80s presented with continuous bilateral ballism in the arms and legs and tongue dyskinesia. Magnetic resonance imaging showed no ischemic lesions, while cerebral angiography revealed right internal carotid artery (ICA) occlusion and 80% stenosis of the left ICA. 99mTc-ethyl cysteinate dimer single-photon emission computed tomography demonstrated hypoperfusion in the right cerebral cortex but hyperperfusion in both basal ganglia. Left ICA stenting was performed, and involuntary limb shaking disappeared. This case report highlights the importance of accurate diagnosis and treatment of bilateral ballism as LS-TIA.
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Affiliation(s)
- Toshihiko Shimizu
- Department of Neurosurgery, Matsuyama Shimin Hospital, Matsuyama City, Ehime, Japan.
| | - Keiko Haro
- Department of Neurology, Matsuyama Shimin Hospital, Matsuyama City, Ehime, Japan
| | - Masahiko Tagawa
- Department of Neurosurgery, Ehime University Graduate School of Medicine, Tōon City, Ehime, Japan
| | - Masaaki Hirata
- Department of Radiology, Matsuyama Shimin Hospital, Matsuyama City, Ehime, Japan
| | - Sachiko Iwano
- Department of Radiology, Matsuyama Shimin Hospital, Matsuyama City, Ehime, Japan
| | - Hiroshi Kosaka
- Department of Neurosurgery, Matsuyama Shimin Hospital, Matsuyama City, Ehime, Japan
| | - Yuji Yamamoto
- Department of Neurosurgery, Matsuyama Shimin Hospital, Matsuyama City, Ehime, Japan
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3
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Nakamura Y, Monzen H, Tamura M, Kosaka H, Kijima K, Nishimura Y. Development of a radiopaque tiltmeter to improve reproducibility for Fowler's position on chest radiography. Radiography (Lond) 2022; 28:912-918. [PMID: 35810623 DOI: 10.1016/j.radi.2022.06.008] [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: 11/21/2021] [Revised: 06/15/2022] [Accepted: 06/17/2022] [Indexed: 11/16/2022]
Abstract
INTRODUCTION We have developed a novel radiopaque tiltmeter (ROT) that can indicate patient tilt during a radiography examination and display it on X-ray images. This study evaluated the effect of variation of patient tilt on the reproducibility of Fowler's position for chest radiography and the accuracy of the ROT. METHODS We evaluated the reproducibility of Fowler's position based on changes from the first day in the central venous catheter (CVC) tip position and the cardiothoracic ratio (CTR) with and without a digital tiltmeter to verify its efficacy in patients who underwent mobile chest radiography. The ROT contains radiopaque liquid consisting of white barium sulfate solution and oil and has a scale bar of 15°-75° with increments of 15° to indicate ROT tilt. The ROT tilt was increased from 10° to 80° in increments of 10°. We then evaluated (1) the difference between the ROT tilt and the tilt measured with a digital tiltmeter, and (2) the ROT tilt displayed on the X-ray image. RESULTS With regard to reproducibility in Fowler's position, changes in the CVC tip position were 2.8 ± 3.9 mm and 10.7 ± 10.6 mm with and without the tiltmeter, respectively (p < 0.05) and the respective rates of change in the CTR were 0.7% ± 0.6% and 4.0% ± 2.1% (p < 0.05). Differences between the ROT tilt and the tilt measured by the digital tiltmeter were within ±2.5°. All ROT tilts displayed on the X-ray images were recognized exactly as each tilt. CONCLUSION Our novel ROT had the potential to accurately indicate patient tilt during chest radiography, which could be helpful in terms of reproducibility and precise follow-up. IMPLICATIONS FOR PRACTICE Use of the ROT for determination of patient tilt can improve reproducibility in Fowler's position, allowing more accurate serial X-ray imaging.
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Affiliation(s)
- Y Nakamura
- Department of Medical Physics, Graduate School of Medical Sciences, Kindai University, 377-2 Ohno-Higashi, Osaka-Sayama, Osaka 589-8511, Japan; Department of Radiological Technology, University Hospital, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan.
| | - H Monzen
- Department of Medical Physics, Graduate School of Medical Sciences, Kindai University, 377-2 Ohno-Higashi, Osaka-Sayama, Osaka 589-8511, Japan.
| | - M Tamura
- Department of Medical Physics, Graduate School of Medical Sciences, Kindai University, 377-2 Ohno-Higashi, Osaka-Sayama, Osaka 589-8511, Japan.
| | - H Kosaka
- Department of Medical Physics, Graduate School of Medical Sciences, Kindai University, 377-2 Ohno-Higashi, Osaka-Sayama, Osaka 589-8511, Japan.
| | - K Kijima
- Department of Radiological Technology, University Hospital, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan.
| | - Y Nishimura
- Department of Radiation Oncology, Faculty of Medicine, Kindai University, 377-2 Ohno-Higashi, Osaka-Sayama, Osaka 589-8511, Japan.
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Sumi-Mizuno M, Fukunaga A, Kosaka H, Imai Y, Nagano T. Appropriate indication and procedure for random skin biopsy in the diagnosis of intravascular large B-cell lymphoma. Australas J Dermatol 2020; 62:225-227. [PMID: 33338260 PMCID: PMC8246572 DOI: 10.1111/ajd.13487] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 08/28/2020] [Accepted: 09/13/2020] [Indexed: 12/01/2022]
Affiliation(s)
- Mayuko Sumi-Mizuno
- Department of Dermatology, Kobe City Medical Centre General Hospital, Kobe, Japan.,Department of Dermatology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Atsushi Fukunaga
- Department of Dermatology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Hiroshi Kosaka
- Department of Dermatology, Kobe City Medical Centre General Hospital, Kobe, Japan
| | - Yukihiro Imai
- Department of Clinical Pathology, Kobe City Medical Centre General Hospital, Kobe, Japan
| | - Tohru Nagano
- Department of Dermatology, Kobe City Medical Centre General Hospital, Kobe, Japan
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Fujioka T, Fujisawa TX, Inohara K, Okamoto Y, Matsumura Y, Tsuchiya KJ, Katayama T, Munesue T, Tomoda A, Wada Y, Kosaka H. Attenuated relationship between salivary oxytocin levels and attention to social information in adolescents and adults with autism spectrum disorder: a comparative study. Ann Gen Psychiatry 2020; 19:38. [PMID: 32518579 PMCID: PMC7275403 DOI: 10.1186/s12991-020-00287-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Accepted: 05/23/2020] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Previous research studies have assessed the relationship between attention to social information and peripheral (e.g., plasma and salivary) oxytocin (OT) levels in typically developing (TD) children and children with autism spectrum disorder (ASD). A relationship between them was observed in TD children, but not in children with ASD. However, this relationship remains unexamined in other age groups. To clarify whether this lack of association is maintained throughout development in individuals with ASD, we aimed to assess the relationship between salivary OT levels and attention to social information in adolescents and adults with and without ASD. METHODS We recruited male adolescents and adults with ASD (n = 17) and TD participants (n = 24). Using the all-in-one eye-tracking system Gazefinder, we measured the percentage fixation time allocated to social information. We also measured the salivary OT levels and Autism Spectrum Quotient (AQ) of participants. Subsequently, we confirmed group differences and conducted a correlation analysis to investigate the relationships between these three measures. RESULTS Salivary OT levels did not show any significant difference between the ASD and TD groups and were negatively correlated with the AQ in the whole-group analysis, but not in within-group analysis. Individuals with ASD had significantly lower percentage fixation times than did TD individuals for eye regions in human faces with/without mouth motion, for upright biological motion, and for people regions in the people and geometry movies. The percentage of fixation for geometric shapes in the people and geometry movies was significantly higher in the ASD than in the TD group. In the TD group, salivary OT levels were positively correlated with percentage fixation times for upright biological motion and people and negatively correlated with inverted biological motion and geometry. However, no significant correlations were found in the ASD group. CONCLUSIONS Our exploratory results suggest that salivary OT levels in adolescents and adults with ASD are less indicative of attention to social stimuli than they are in TD adolescents and adults. It is suggested that their association is slightly weaker in adolescents and adults with ASD and that this attenuated relationship appears to be maintained throughout development.
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Affiliation(s)
- T Fujioka
- Faculty of Education, University of Fukui, Fukui, Fukui Japan.,Department of Child Development, United Graduate School of Child Development, Osaka University, Kanazawa University, Hamamatsu University School of Medicine, Chiba University, and University of Fukui, Suita, Osaka Japan.,Research Center for Child Mental Development, University of Fukui, Eiheiji, Fukui Japan
| | - T X Fujisawa
- Department of Child Development, United Graduate School of Child Development, Osaka University, Kanazawa University, Hamamatsu University School of Medicine, Chiba University, and University of Fukui, Suita, Osaka Japan.,Research Center for Child Mental Development, University of Fukui, Eiheiji, Fukui Japan
| | - K Inohara
- College of Liberal Arts and Sciences, Kitasato University, Sagamihara, Kanagawa, Japan.,Department of Neuropsychiatry, Faculty of Medical Sciences, University of Fukui, Eiheiji, Fukui Japan
| | - Y Okamoto
- Department of Child Development, United Graduate School of Child Development, Osaka University, Kanazawa University, Hamamatsu University School of Medicine, Chiba University, and University of Fukui, Suita, Osaka Japan.,Research Center for Child Mental Development, University of Fukui, Eiheiji, Fukui Japan.,Waseda Institute for Advanced Study, Waseda University, Shinjuku, Tokyo Japan
| | - Y Matsumura
- Department of Neuropsychiatry, Faculty of Medical Sciences, University of Fukui, Eiheiji, Fukui Japan
| | - K J Tsuchiya
- Department of Child Development, United Graduate School of Child Development, Osaka University, Kanazawa University, Hamamatsu University School of Medicine, Chiba University, and University of Fukui, Suita, Osaka Japan.,Research Center for Child Mental Development, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka Japan.,Department of Psychiatry, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka Japan
| | - T Katayama
- Department of Child Development, United Graduate School of Child Development, Osaka University, Kanazawa University, Hamamatsu University School of Medicine, Chiba University, and University of Fukui, Suita, Osaka Japan
| | - T Munesue
- Kaga Mental Hospital, Kaga, Ishikawa Japan
| | - A Tomoda
- Department of Child Development, United Graduate School of Child Development, Osaka University, Kanazawa University, Hamamatsu University School of Medicine, Chiba University, and University of Fukui, Suita, Osaka Japan.,Research Center for Child Mental Development, University of Fukui, Eiheiji, Fukui Japan
| | - Y Wada
- Department of Neuropsychiatry, Faculty of Medical Sciences, University of Fukui, Eiheiji, Fukui Japan.,Kaga Mental Hospital, Kaga, Ishikawa Japan
| | - H Kosaka
- Department of Child Development, United Graduate School of Child Development, Osaka University, Kanazawa University, Hamamatsu University School of Medicine, Chiba University, and University of Fukui, Suita, Osaka Japan.,Research Center for Child Mental Development, University of Fukui, Eiheiji, Fukui Japan.,Department of Neuropsychiatry, Faculty of Medical Sciences, University of Fukui, Eiheiji, Fukui Japan
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Mizuno T, Matsumoto H, Mita K, Kogauchi S, Kiyono Y, Kosaka H, Omata N. Psychosis is an extension of mood swings from the perspective of neuronal plasticity impairments. Med Hypotheses 2019; 124:37-39. [PMID: 30798913 DOI: 10.1016/j.mehy.2019.02.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 01/04/2019] [Accepted: 02/01/2019] [Indexed: 12/27/2022]
Abstract
We previously hypothesized that depressive and manic states may be consecutive presentations of the same underlying neuronal plasticity, and that moderate impairments in neuronal plasticity cause depressive states while further impairment to neuronal plasticity causes manic states. Psychopathological or biological relationships between bipolar disorder and schizophrenia have also been revealed. Therefore, in addition to depressive and manic states, psychosis may also be considered a manifestation resulting from additional impairments to neuronal plasticity. In the present manuscript, we hypothesize that moderate and more severe impairments to neuronal plasticity cause depressive and manic states, respectively, and that more serious impairments to neuronal plasticity cause psychosis. Many studies have suggested that impairments in neuronal plasticity contribute to schizophrenia and other mental disorders with psychotic features, and that the impairment of neuronal plasticity in schizophrenia is more severe than that in bipolar disorder. Therefore, we hypothesize more specifically that impairments in neuronal plasticity may be more severe in the order of the cases featuring psychosis, mania, and depression. This progression notably overlaps with the arrangement of schizophrenia, bipolar disorder, and depressive disorder in the DSM-5. Psychotic symptoms are thought to appear further towards the base of the psychopathological hierarchy than are manic or depressive symptoms. If impairments to neuronal plasticity contribute to this psychopathological hierarchy, as we contest that they do, our hypothesis may serve as a bridge between clinical psychopathology, diagnosis, and biological psychiatry.
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Affiliation(s)
- T Mizuno
- Department of Neuropsychiatry, Faculty of Medical Sciences, University of Fukui, 23-3 Matsuokashimoaizuki, Eiheiji-cho, Yoshida-gun, Fukui 910-1193, Japan
| | - H Matsumoto
- Department of Neuropsychiatry, Faculty of Medical Sciences, University of Fukui, 23-3 Matsuokashimoaizuki, Eiheiji-cho, Yoshida-gun, Fukui 910-1193, Japan; Psychiatric Medical Center, Fukui Prefectural Hospital, 2-8-1 Yotsui, Fukui-City, Fukui 910-8526, Japan
| | - K Mita
- Department of Neuropsychiatry, Faculty of Medical Sciences, University of Fukui, 23-3 Matsuokashimoaizuki, Eiheiji-cho, Yoshida-gun, Fukui 910-1193, Japan
| | - S Kogauchi
- Department of Neuropsychiatry, Faculty of Medical Sciences, University of Fukui, 23-3 Matsuokashimoaizuki, Eiheiji-cho, Yoshida-gun, Fukui 910-1193, Japan
| | - Y Kiyono
- Biomedical Imaging Research Center, University of Fukui, 23-3 Matsuokashimoaizuki, Eiheiji-cho, Yoshida-gun, Fukui 910-1193, Japan
| | - H Kosaka
- Department of Neuropsychiatry, Faculty of Medical Sciences, University of Fukui, 23-3 Matsuokashimoaizuki, Eiheiji-cho, Yoshida-gun, Fukui 910-1193, Japan
| | - N Omata
- Department of Neuropsychiatry, Faculty of Medical Sciences, University of Fukui, 23-3 Matsuokashimoaizuki, Eiheiji-cho, Yoshida-gun, Fukui 910-1193, Japan; Department of Nursing, Faculty of Health Science, Fukui Health Science University, 55 Egami-cho 13-1, Fukui-City, Fukui 910-3190, Japan.
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7
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Affiliation(s)
- Tohru Nagano
- Department of Dermatology; Kobe City Medical Center General Hospital; Kobe Japan
| | - Shimpei Kotani
- Department of Dermatology; Kobe City Medical Center General Hospital; Kobe Japan
| | - Mamiko Omori
- Department of Dermatology; Kobe City Medical Center General Hospital; Kobe Japan
| | - Hiroshi Kosaka
- Department of Dermatology; Kobe City Medical Center General Hospital; Kobe Japan
| | - Makiko Ogawa
- Department of Dermatology; Kobe City Medical Center General Hospital; Kobe Japan
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8
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Kosaka H, Okamoto Y, Munesue T, Yamasue H, Inohara K, Fujioka T, Anme T, Orisaka M, Ishitobi M, Jung M, Fujisawa TX, Tanaka S, Arai S, Asano M, Saito DN, Sadato N, Tomoda A, Omori M, Sato M, Okazawa H, Higashida H, Wada Y. Oxytocin efficacy is modulated by dosage and oxytocin receptor genotype in young adults with high-functioning autism: a 24-week randomized clinical trial. Transl Psychiatry 2016; 6:e872. [PMID: 27552585 PMCID: PMC5022092 DOI: 10.1038/tp.2016.152] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 06/22/2016] [Accepted: 07/04/2016] [Indexed: 12/27/2022] Open
Abstract
Recent studies have suggested that long-term oxytocin administration can alleviate the symptoms of autism spectrum disorder (ASD); however, factors influencing its efficacy are still unclear. We conducted a single-center phase 2, pilot, randomized, double-blind, placebo-controlled, parallel-group, clinical trial in young adults with high-functioning ASD, to determine whether oxytocin dosage and genetic background of the oxytocin receptor affects oxytocin efficacy. This trial consisted of double-blind (12 weeks), open-label (12 weeks) and follow-up phases (8 weeks). To examine dose dependency, 60 participants were randomly assigned to high-dose (32 IU per day) or low-dose intranasal oxytocin (16 IU per day), or placebo groups during the double-blind phase. Next, we measured single-nucleotide polymorphisms (SNPs) in the oxytocin receptor gene (OXTR). In the intention-to-treat population, no outcomes were improved after oxytocin administration. However, in male participants, Clinical Global Impression-Improvement (CGI-I) scores in the high-dose group, but not the low-dose group, were significantly higher than in the placebo group. Furthermore, we examined whether oxytocin efficacy, reflected in the CGI-I scores, is influenced by estimated daily dosage and OXTR polymorphisms in male participants. We found that >21 IU per day oxytocin was more effective than ⩽21 IU per day, and that a SNP in OXTR (rs6791619) predicted CGI-I scores for ⩽21 IU per day oxytocin treatment. No severe adverse events occurred. These results suggest that efficacy of long-term oxytocin administration in young men with high-functioning ASD depends on the oxytocin dosage and genetic background of the oxytocin receptor, which contributes to the effectiveness of oxytocin treatment of ASD.
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Affiliation(s)
- H Kosaka
- Research Center for Child Mental Development, University of Fukui, Eiheiji, Japan,Department of Neuropsychiatry, Faculty of Medical Sciences, University of Fukui, Eiheiji, Japan,Division of Developmental Higher Brain Functions, Department of Child Development United Graduate School of Child Development, Osaka University, Kanazawa University, Hamamatsu University School of Medicine, Chiba University and University of Fukui, Eiheiji, Japan,Research Center for Child Mental Development, University of Fukui, 23-3 Matsuokashimoaizuki, Eiheiji 910-1193, Fukui, Japan. E-mail:
| | - Y Okamoto
- Research Center for Child Mental Development, University of Fukui, Eiheiji, Japan,Division of Developmental Higher Brain Functions, Department of Child Development United Graduate School of Child Development, Osaka University, Kanazawa University, Hamamatsu University School of Medicine, Chiba University and University of Fukui, Eiheiji, Japan
| | - T Munesue
- Research Center for Child Mental Development, Kanazawa University, Kanazawa, Japan
| | - H Yamasue
- Department of Neuropsychiatry, School of Medicine, University of Tokyo, Tokyo, Japan
| | - K Inohara
- Department of Neuropsychiatry, Faculty of Medical Sciences, University of Fukui, Eiheiji, Japan,Department of Informatics, Graduate School of Informatics and Engineering, The University of Electro-Communications, Chofu, Japan
| | - T Fujioka
- Department of Neuropsychiatry, Faculty of Medical Sciences, University of Fukui, Eiheiji, Japan
| | - T Anme
- International Community Care and Lifespan Development, Empowerment Sciences, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - M Orisaka
- Department of Obstetrics and Gynecology, University of Fukui, Eiheiji, Japan
| | - M Ishitobi
- Department of Neuropsychiatry, Faculty of Medical Sciences, University of Fukui, Eiheiji, Japan,Department of Child and Adolescent Mental Health, National Institute of Mental Health, National Center of Neurology and Psychiatry, Kodaira, Japan
| | - M Jung
- Research Center for Child Mental Development, University of Fukui, Eiheiji, Japan,Division of Developmental Higher Brain Functions, Department of Child Development United Graduate School of Child Development, Osaka University, Kanazawa University, Hamamatsu University School of Medicine, Chiba University and University of Fukui, Eiheiji, Japan
| | - T X Fujisawa
- Research Center for Child Mental Development, University of Fukui, Eiheiji, Japan,Division of Developmental Higher Brain Functions, Department of Child Development United Graduate School of Child Development, Osaka University, Kanazawa University, Hamamatsu University School of Medicine, Chiba University and University of Fukui, Eiheiji, Japan
| | - S Tanaka
- Research Center for Child Mental Development, University of Fukui, Eiheiji, Japan
| | - S Arai
- Research Center for Child Mental Development, University of Fukui, Eiheiji, Japan,Division of Developmental Higher Brain Functions, Department of Child Development United Graduate School of Child Development, Osaka University, Kanazawa University, Hamamatsu University School of Medicine, Chiba University and University of Fukui, Eiheiji, Japan
| | - M Asano
- Research Center for Child Mental Development, University of Fukui, Eiheiji, Japan,Department of Neuropsychiatry, Faculty of Medical Sciences, University of Fukui, Eiheiji, Japan,Division of Developmental Higher Brain Functions, Department of Child Development United Graduate School of Child Development, Osaka University, Kanazawa University, Hamamatsu University School of Medicine, Chiba University and University of Fukui, Eiheiji, Japan
| | - D N Saito
- Research Center for Child Mental Development, University of Fukui, Eiheiji, Japan,Division of Developmental Higher Brain Functions, Department of Child Development United Graduate School of Child Development, Osaka University, Kanazawa University, Hamamatsu University School of Medicine, Chiba University and University of Fukui, Eiheiji, Japan,Biomedical Imaging Research Center, University of Fukui, Eiheiji, Japan
| | - N Sadato
- Department of Cerebral Research, National Institute for Physiological Sciences, Okazaki, Japan
| | - A Tomoda
- Research Center for Child Mental Development, University of Fukui, Eiheiji, Japan,Division of Developmental Higher Brain Functions, Department of Child Development United Graduate School of Child Development, Osaka University, Kanazawa University, Hamamatsu University School of Medicine, Chiba University and University of Fukui, Eiheiji, Japan
| | - M Omori
- Faculty of Nursing and Social Welfare Sciences, Fukui Prefectural University, Eiheiji, Japan
| | - M Sato
- Research Center for Child Mental Development, University of Fukui, Eiheiji, Japan,Division of Developmental Higher Brain Functions, Department of Child Development United Graduate School of Child Development, Osaka University, Kanazawa University, Hamamatsu University School of Medicine, Chiba University and University of Fukui, Eiheiji, Japan,Department of Anatomy and Neuroscience, Graduate School of Medicine, Osaka University, Suita, Japan,Division of Developmental Neuroscience, Department of Child Development United Graduate School of Child Development, Osaka University, Kanazawa University, Hamamatsu University School of Medicine, Chiba University and University of Fukui, Suita, Japan
| | - H Okazawa
- Research Center for Child Mental Development, University of Fukui, Eiheiji, Japan,Division of Developmental Higher Brain Functions, Department of Child Development United Graduate School of Child Development, Osaka University, Kanazawa University, Hamamatsu University School of Medicine, Chiba University and University of Fukui, Eiheiji, Japan,Biomedical Imaging Research Center, University of Fukui, Eiheiji, Japan
| | - H Higashida
- Research Center for Child Mental Development, Kanazawa University, Kanazawa, Japan
| | - Y Wada
- Research Center for Child Mental Development, University of Fukui, Eiheiji, Japan,Department of Neuropsychiatry, Faculty of Medical Sciences, University of Fukui, Eiheiji, Japan,Division of Developmental Higher Brain Functions, Department of Child Development United Graduate School of Child Development, Osaka University, Kanazawa University, Hamamatsu University School of Medicine, Chiba University and University of Fukui, Eiheiji, Japan
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Abstract
A 53-year-old woman had had a pale-brown lesion on her right cheek and neck from birth. Since she was about 40 years old, part of the lesion had gradually elevated and increased in size. At the first examination, there was a huge mass measuring 110 x 70 x 35 mm on the right cheek. A wide local excision of the area including a superficial parotidectomy and submandibular lymph node dissection was performed, followed by full thickness skin grafting. Histological examination of the tumor revealed an invasive dermal neoplasm characterized by lobes that were composed of foamy cells stained with Sudan-IV mixed with many atypical cells showing remarkable variation in the shapes and sizes of their nuclei. The surrounding epithelial changes were consistent with nevus sebaceus. From these findings, the gigantic tumor was diagnosed as a sebaceous carcinoma arising in nevus sebaceus.
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Affiliation(s)
- Ken Matsuda
- Department of Plastic Surgery, Osaka University School of Medicine, Suita-shi, Osaka, Japan
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10
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Ohashi K, Yoshimoto T, Kosaka H, Hirano T, Iimuro Y, Nakanishi K, Fujimoto J. Interferon γ and plasminogen activator inhibitor 1 regulate adhesion formation after partial hepatectomy. Br J Surg 2014; 101:398-407. [PMID: 24536011 DOI: 10.1002/bjs.9405] [Citation(s) in RCA: 18] [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] [Accepted: 11/19/2013] [Indexed: 02/04/2023]
Abstract
BACKGROUND The pathophysiology of intra-abdominal adhesions has not been studied extensively. The aim of this study was to elucidate the molecular mechanisms underlying adhesion formation in a murine model and in patients undergoing hepatectomy. METHODS Partial hepatectomy was performed using bipolar forceps in mice. Wild-type mice, antibodies to CD4 and interferon (IFN) γ, IFN-γ, natural killer T (NKT) cells and plasminogen activator inhibitor (PAI) 1 knockout (KO) mice were used. Recombinant hepatocyte growth factor (HGF) was tested for its ability to prevent adhesions. Liver specimens were obtained during surgery from patients undergoing hepatectomy. Adhesion formation was evaluated using a scoring system that ranged from 0 (no adhesions) to 5 (severe adhesions). Levels of IFN-γ and PAI-1 mRNA, and protein concentration of PAI-I were measured, and fluorescence immunostaining was performed. RESULTS Adhesion formation depended on IFN-γ produced by NKT cells, and NKT KO mice developed few adhesions (mean(s.d.) 1·7(0·3) versus 4·6(0·4) in wild-type mice; P = 0·037). In wild-type mice, the level of PAI-1 mRNA increased after hepatectomy, followed by a decrease in the tissue plasminogen activator (tPA) mRNA level. Adhesion formation was inhibited completely in PAI-1 KO mice (0(0) versus 4·1(0·8) in wild-type mice; P = 0·002). HGF inhibited formation of abdominal adhesions after hepatectomy by reducing IFN-γ and PAI-1 levels, and increasing tPA levels compared with those in mice treated with phosphate-buffered saline (P < 0·001, P = 0·002 and P = 0·035 respectively). In human liver specimens, NKT cells accumulated in the liver after hepatectomy, and PAI-1 expression was increased 5·25-fold (P = 0·030). CONCLUSION IFN-γ is a key molecule for abdominal adhesion formation after hepatectomy, acting via the reciprocal balance of PAI-1 and tPA. This molecular mechanism may also regulate adhesion formation in patients following hepatectomy. HGF inhibited formation of adhesions by regulating IFN-γ and PAI-1, suggesting that it may be an important target for prevention of adhesions after hepatectomy. SURGICAL RELEVANCE: Postoperative intra-abdominal adhesions can be asymptomatic or cause significant morbidity and mortality. Adhesion formation after hepatectomy has not been studied extensively. In the present study, the molecular mechanisms underlying intra-abdominal adhesions after hepatectomy were investigated in a murine model and in patients. Interferon (IFN) γ produced by natural killer T cells is a key molecule for adhesion formation after hepatectomy in mice, acting via the reciprocal balance between plasminogen activator inhibitor (PAI) 1 and tissue plasminogen activator, the pivotal factors in fibrinolytic activity. This mechanism was also involved in the regulation of adhesions in human tissue samples. Hepatocyte growth factor (HGF) strongly inhibited adhesion formation by regulating IFN-γ and PAI-1. These results indicate that IFN-γ and PAI-1 are possible therapeutic targets, and HGF could prevent postoperative adhesion formation after hepatectomy.
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Affiliation(s)
- K Ohashi
- Department of Surgery, Hyogo College of Medicine, Nishinomiya, Japan
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11
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Moriue T, Igarashi J, Yoneda K, Hashimoto T, Nakai K, Kosaka H, Kubota Y. Sphingosine 1-phosphate attenuates peroxide-induced apoptosis in HaCaT cells culturedin vitro. Clin Exp Dermatol 2013; 38:638-45. [DOI: 10.1111/ced.12037] [Citation(s) in RCA: 3] [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] [Accepted: 07/22/2012] [Indexed: 01/30/2023]
Affiliation(s)
- T. Moriue
- Departments of Dermatology; Faculty of Medicine; Kagawa University; Kagawal; Japan
| | - J. Igarashi
- Cardiovascular Physiology; Faculty of Medicine; Kagawa University; Kagawa; Japan
| | - K. Yoneda
- Departments of Dermatology; Faculty of Medicine; Kagawa University; Kagawal; Japan
| | - T. Hashimoto
- Cardiovascular Physiology; Faculty of Medicine; Kagawa University; Kagawa; Japan
| | - K. Nakai
- Cardiovascular Physiology; Faculty of Medicine; Kagawa University; Kagawa; Japan
| | - H. Kosaka
- Cardiovascular Physiology; Faculty of Medicine; Kagawa University; Kagawa; Japan
| | - Y. Kubota
- Departments of Dermatology; Faculty of Medicine; Kagawa University; Kagawal; Japan
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12
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Kosaka H, Ichikawa T, Kurozumi K, Kambara H, Inoue S, Maruo T, Nakamura K, Hamada H, Date I. Therapeutic effect of suicide gene-transferred mesenchymal stem cells in a rat model of glioma. Cancer Gene Ther 2012; 19:572-8. [DOI: 10.1038/cgt.2012.35] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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13
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Iwado E, Ichikawa T, Kosaka H, Otsuka S, Kambara H, Tamiya T, Kondo S, Date I. Role of VEGF and matrix metalloproteinase-9 in peritumoral brain edema associated with supratentorial benign meningiomas. Neuropathology 2012; 32:638-46. [DOI: 10.1111/j.1440-1789.2012.01312.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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14
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Cassidy M, Sheldon H, Gainsbury M, Kosaka H, Stucchi A, Becker J. The Role of the Neurokinin-1 Receptor in Adhesion Formation and Prevention. J Surg Res 2012. [DOI: 10.1016/j.jss.2011.11.691] [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: 12/01/2022]
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15
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Kosaka H, Stucchi A, Kantarci A, Hasturk H, Van Dyke T, Becker J. Resolvin E1 Reduces Intraabdominal Adhesions by Inhibiting Macrophage Chemoattraction into the Peritoneum. J Surg Res 2012. [DOI: 10.1016/j.jss.2011.11.524] [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]
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16
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Kosaka H, Gainsbury M, Chu D, Stucchi A, Becker J. KC and MIP-2 are Associated with Intraabdominal Adhesion Formation in a Mouse Model. J Surg Res 2011. [DOI: 10.1016/j.jss.2010.11.409] [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]
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17
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Nakai K, Yoneda K, Maeda R, Munehiro A, Fujita N, Yokoi I, Moriue J, Moriue T, Kosaka H, Kubota Y. Urinary biomarker of oxidative stress in patients with psoriasis vulgaris and atopic dermatitis. J Eur Acad Dermatol Venereol 2009; 23:1405-8. [DOI: 10.1111/j.1468-3083.2009.03327.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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18
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Kouri T, Nokelainen P, Pelkonen V, Kosaka H, Saeger B. Evaluation of the ARKRAY AUTION Eleven reflectometer in detecting microalbuminuria with AUTION Screen test strips and proteinuria with AUTION Sticks 10PA strips. Scand J Clin Lab Invest 2009; 69:52-64. [PMID: 18923968 DOI: 10.1080/00365510802322419] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
OBJECTIVE Albumin/creatinine and protein/creatinine ratios were measured with the ARKRAY AUTION Eleven reflectometer using AUTION Screen and AUTION Sticks 10PA strips, respectively, against quantitative Siemens Advia reference procedures from 368 patient urines, as an evaluation of their applicability for use in points-of-care and small laboratories. MATERIAL AND METHODS Direct reflectance measurements were utilized to estimate imprecision, as well as to suggest reclassification of ordinal scale categories into normoalbuminuria, microalbuminuria and macroalbuminuria groups (3.4 g/mol and 34 g/mol cut-off limits, corresponding to 30 mg/g and 300 mg/g creatinine in conventional units). RESULTS Analytically, ordinal scale albumin/creatinine ratios agreed in 86% of cases with those obtained from Advia measurements, resulting in a kappa coefficient of 0.79. Protein/creatinine ratios of the AUTION Sticks 10PA strip were classified into three groups at limits of 11.3 g/mol and 56.6 g/mol (100 mg/g and 500 mg/g in conventional units), with an agreement of 77% and a kappa coefficient of 0.65 against Advia procedures. To optimize clinical outcomes, cut-off reflectances of ordinal scale categories of AUTION Eleven were adjusted. The clinical specificity of detecting an increased albumin/creatinine ratio was then increased from 81% to 95%, with clinical sensitivity kept at 88% at the 3.4 g/mol limit of the reference procedure. Clinical specificity of the albuminuria field alone (at a clinical sensitivity of 88%) was only 73%. Adjustments to cut-off reflectances of the reported categories for protein/creatinine ratios increased clinical specificity from 54% to 94%, while losing clinical sensitivity from 97% to 89% only, with an improved concordance of 83% and a kappa coefficient of 0.75 against Advia measurements. The combination to creatinine measurements improved clinical specificity compared to 50% by the protein field alone. In economic terms, it is estimated that population screening for microalbuminuria using the AUTION Eleven reflectometer is cheaper than by quantitative albumin/creatinine measurements alone, based on the incidence of end-stage renal disease of 90 patients/million/year at the Northern Ostrobothnia Hospital District.
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Affiliation(s)
- T Kouri
- Laboratory, Oulu University Hospital, Finland.
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19
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Kosaka H, Fujimoto J. 88. Brand New Prevention Method of Postoperative Adhesion Formation Used by HGF. J Surg Res 2009. [DOI: 10.1016/j.jss.2008.11.112] [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: 10/21/2022]
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20
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Mizukami K, Hasegawa S, Terada S, Katada A, Takahashi T, Kosaka H, Wada Y. Chronological changes in the basic EEG rhythm in the elderly. Int J Psychophysiol 2008. [DOI: 10.1016/j.ijpsycho.2008.05.090] [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: 11/17/2022]
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21
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Conrad MN, Lee CY, Chao G, Shinohara M, Kosaka H, Shinohara A, Conchello JA, Dresser ME. Rapid telomere movement in meiotic prophase is promoted by NDJ1, MPS3, and CSM4 and is modulated by recombination. Cell 2008; 133:1175-87. [PMID: 18585352 DOI: 10.1016/j.cell.2008.04.047] [Citation(s) in RCA: 168] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2007] [Revised: 02/07/2008] [Accepted: 04/12/2008] [Indexed: 11/18/2022]
Abstract
Haploidization of the genome in meiosis requires that chromosomes be sorted exclusively into pairs stabilized by synaptonemal complexes (SCs) and crossovers. This sorting and pairing is accompanied by active chromosome positioning in meiotic prophase in which telomeres cluster near the spindle pole to form the bouquet before dispersing around the nuclear envelope. We now describe telomere-led rapid prophase movements (RPMs) that frequently exceed 1 microm/s and persist throughout meiotic prophase. Bouquet formation and RPMs depend on NDJ1, MPS3, and a new member of this pathway, CSM4, which encodes a meiosis-specific nuclear envelope protein required specifically for telomere mobility. RPMs initiate independently of recombination but differ quantitatively in mutants that fail to complete recombination, suggesting that RPMs respond to recombination status. Together with recombination defects described for ndj1, our observations suggest that RPMs and SCs balance the disruption and stabilization of recombinational interactions, respectively, to regulate crossing over.
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Affiliation(s)
- Michael N Conrad
- Program in Molecular, Cell and Developmental Biology, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
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22
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Yoshida J, Kosaka H, Nishida S, Kumagai S. Actual Conditions of the Mixing of Antineoplastic Drugs for Injection in Hospitals in Osaka Prefecture, Japan. J Occup Health 2008; 50:86-91. [DOI: 10.1539/joh.50.86] [Citation(s) in RCA: 9] [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] [Indexed: 11/16/2022] Open
Affiliation(s)
- Jin Yoshida
- Department of Environmental HealthOsaka Prefectural Institute of Public HealthJapan
| | - Hiroshi Kosaka
- Department of Environmental HealthOsaka Prefectural Institute of Public HealthJapan
| | - Shozo Nishida
- Division of PharmacotherapyKinki University School of PharmacyJapan
| | - Shinji Kumagai
- Department of Environmental HealthOsaka Prefectural Institute of Public HealthJapan
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23
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Higashino K, Sairyo K, Katoh S, Sakai T, Kosaka H, Yasui N. Minimally invasive technique for direct repair of the pars defects in young adults using a spinal endoscope: a technical note. ACTA ACUST UNITED AC 2007; 50:182-6. [PMID: 17882757 DOI: 10.1055/s-2007-982511] [Citation(s) in RCA: 17] [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: 10/22/2022]
Abstract
Pars defect (spondylolysis) of the lumbar spine can cause chronic low back pain, and it sometimes requires surgical intervention. Direct repair is selected for the surgery if young adult patients do not present significant disc degeneration and lumbar instability. In order to lessen damages of back muscles during surgery, we added the use of a spinal endoscope to the "Buck's screwing procedure" the direct repair. There are four steps in this procedure: 1) identification of the defect, 2) curettage (refresh) of the defect, 3) percutaneous insertion of the annulated screws and 4) cancellous bone grafting. All these steps can be done endoscopically. We treated 3 young adults--a baseball player, a professional cycle-racer and a sculptor--using this endoscopic procedure. There were no complications during or after the operation. Union was obtained in all defects within 3 months, and they returned to their previous activities within 6 months after the surgery.
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Affiliation(s)
- K Higashino
- Department of Orthopedics, The University of Tokushima, Tokushima, Japan
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24
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Waithman J, Allan RS, Kosaka H, Azukizawa H, Shortman K, Lutz MB, Heath WR, Carbone FR, Belz GT. Skin-derived dendritic cells can mediate deletional tolerance of class I-restricted self-reactive T cells. J Immunol 2007; 179:4535-41. [PMID: 17878350 DOI: 10.4049/jimmunol.179.7.4535] [Citation(s) in RCA: 106] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Skin-draining lymph nodes contain a number of dendritic cell (DC) subsets of different origins. Some of these are migratory, such as the skin-derived epidermal Langerhans cells and a separate dermal DC subset, whereas others are lymphoid resident in nature, such as the CD8+ DCs found throughout the lymphoid tissues. In this study, we examine the DC subset presentation of skin-derived self-Ag by migratory and lymphoid-resident DCs, both in the steady state and under conditions of local skin infection. We show that presentation of self-Ag is confined to skin-derived migrating DCs in both settings. Steady state presentation resulted in deletional T cell tolerance despite these DCs expressing a relatively mature phenotype as measured by traditional markers such as the level of MHC class II and CD86 expression. Thus, self-Ag can be carried to the draining lymph nodes by skin-derived DCs and there presented by these same cells for tolerization of the circulating T cell pool.
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Affiliation(s)
- Jason Waithman
- Department of Microbiology and Immunology, University of Melbourne, Parkville, Australia
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25
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Ishii M, Muramoto Y, Kosaka H, Ohshima S, Mima T, Katada Y, Hirohata S, Saeki Y. A serological switching from anti-dsDNA to anti-Sm antibodies coincided with severe clinical manifestations of systemic lupus erythematosus (hemophagocytosis, profundus and psychosis). Lupus 2007; 16:67-9. [PMID: 17283590 DOI: 10.1177/0961203306071432] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
MESH Headings
- Administration, Oral
- Antibodies, Antinuclear/blood
- Antibodies, Antinuclear/immunology
- Antibody Specificity
- Autoantibodies/blood
- Autoantibodies/immunology
- Autoantigens/immunology
- Cyclosporine/administration & dosage
- Cyclosporine/therapeutic use
- DNA/immunology
- Disease Progression
- Drug Therapy, Combination
- Fever/etiology
- Humans
- Immunosuppressive Agents/administration & dosage
- Immunosuppressive Agents/therapeutic use
- Infusions, Intravenous
- Interleukin-6/cerebrospinal fluid
- Lupus Erythematosus, Systemic/complications
- Lupus Erythematosus, Systemic/immunology
- Lupus Erythematosus, Systemic/psychology
- Lymphohistiocytosis, Hemophagocytic/etiology
- Memory Disorders/etiology
- Methylprednisolone/administration & dosage
- Methylprednisolone/therapeutic use
- Prednisolone/administration & dosage
- Prednisolone/therapeutic use
- Psychotic Disorders/etiology
- Ribonucleoproteins, Small Nuclear/immunology
- Skin/pathology
- snRNP Core Proteins
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26
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Igarashi J, Miyoshi M, Hashimoto T, Kubota Y, Kosaka H. Statins induce S1P1 receptors and enhance endothelial nitric oxide production in response to high-density lipoproteins. Br J Pharmacol 2007; 150:470-9. [PMID: 17220911 PMCID: PMC2189725 DOI: 10.1038/sj.bjp.0707114] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.1] [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: 11/08/2022] Open
Abstract
BACKGROUND AND PURPOSE Sphingosine 1-phosphate (S1P) is a serum-borne naturally occurring sphingolipid, specifically enriched in high-density lipoprotein (HDL) fractions. S1P binds to G-protein-coupled S1P1 receptors to activate endothelial NO synthase (eNOS) in vascular endothelial cells. We explored whether and how statins, 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase inhibitors, modulate expression of S1P1 receptors and endothelial responses for subsequent stimulation with S1P or with HDL. EXPERIMENTAL APPROACH Protein expression and phosphorylation and mRNA expression in cultured bovine aortic endothelial cells (BAEC) were determined using immunoblots and reverse transcription PCR analyses, respectively. NO synthesis was assessed as nitrite production. KEY RESULTS Stimulation of BAEC with pitavastatin or atorvastatin led to significant increases in S1P1-receptors, at levels of protein and mRNA, in a dose-dependent manner. When BAEC were treated with pitavastatin prior to stimulation with S1P or with normal human HDL, phosphorylation and activation of eNOS evoked by S1P or by HDL was enhanced. These effects of statins were counteracted by L-mevalonate and were mimicked by an inhibitor of geranylgeranyl transferase I, suggesting that inhibition of HMG-CoA reductase activity and subsequent decreases in protein geranylgeranylation may contribute to these actions of statins. Specific knock down of S1P1 receptors by small interfering RNA led to attenuation of eNOS responses to HDL. CONCLUSIONS AND IMPLICATIONS Statins induce S1P1 receptors and potentiate responses of endothelial cells to HDL-associated sphingolipids, identifying a novel aspect of the pleiotropic actions of statins through which they may exert NO-dependent vascular protective effects.
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MESH Headings
- Alkyl and Aryl Transferases/antagonists & inhibitors
- Animals
- Atorvastatin
- Blotting, Western
- Cattle
- Dose-Response Relationship, Drug
- Endothelium, Vascular/drug effects
- Endothelium, Vascular/metabolism
- Heptanoic Acids/pharmacology
- Hydroxymethylglutaryl-CoA Reductase Inhibitors/pharmacology
- Lipoproteins, HDL/pharmacology
- Lysophospholipids/pharmacology
- Mevalonic Acid/pharmacology
- Nitric Oxide/biosynthesis
- Nitric Oxide Synthase Type III/biosynthesis
- Phosphorylation
- Pyrroles/pharmacology
- Quinolines/pharmacology
- RNA, Messenger/biosynthesis
- RNA, Small Interfering/pharmacology
- Receptors, Lysosphingolipid/antagonists & inhibitors
- Receptors, Lysosphingolipid/biosynthesis
- Receptors, Lysosphingolipid/genetics
- Reverse Transcriptase Polymerase Chain Reaction
- Sphingosine/analogs & derivatives
- Sphingosine/pharmacology
- Stimulation, Chemical
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Affiliation(s)
- J Igarashi
- Department of Cardiovascular Physiology, Kagawa University Faculty of Medicine, Kagawa, Japan.
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27
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Yoshida J, Kosaka H, Tomioka K, Kumagai S. Genotoxic Risks to Nurses from Contamination of the Work Environment with Antineoplastic Drugs in Japan. J Occup Health 2006; 48:517-22. [PMID: 17179646 DOI: 10.1539/joh.48.517] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.5] [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: 11/16/2022] Open
Abstract
The aims of the present study were to clarify the work environment contamination by antineoplastic drugs in a hospital ward and to assess the genotoxic risks to nurses who routinely handle antineoplastic drugs in Japan. The exposed group consisted of 19 female nurses who routinely handled antineoplastic drugs. The control group consisted of 18 female nurses who did not handle antineoplastic drugs in the same hospital as the exposed group. The genotoxicity of the 19 antineoplastic drugs used in the hospital ward and 8 wipe samples of the workbench after handling of antineoplastic drugs were measured using the umu assay. Lymphocyte DNA damage (tail length) was measured with alkaline methods of the single cell gel electrophoresis assay (comet assay). Of the 19 antineoplastic drugs, dacarbazine, bleomycin, daunorubicin, doxorubicin, pirarubicin, carboplatin, cisplatin and etoposide induced genotoxicity. Of the 8 sampling d, the umu activity of the wipe sample was positive on 3 d. Contamination of the workbench was found when the nurses handled more drugs than on other days. The medians of the tail length in the comet assay were 8.5 and 5.1 microm, respectively, for the exposed and control groups, with a significant difference (p=0.004 by Mann-Whitney's U-test). In the present study, the nurses of the exposed group were considered to have been exposed to antineoplastic drugs and lymphocyte DNA damage of the exposed group was suggested to be induced by antineoplastic drugs.
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Affiliation(s)
- Jin Yoshida
- Department of Environmental Health, Osaka Prefectural Institute of Public Health, Osaka, Japan.
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28
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Kosaka H, Omata N, Omori M, Shimoyama T, Murata T, Kashikura K, Takahashi T, Murayama J, Yonekura Y, Wada Y. Abnormal pontine activation in pathological laughing as shown by functional magnetic resonance imaging. J Neurol Neurosurg Psychiatry 2006; 77:1376-80. [PMID: 17110751 PMCID: PMC2077424 DOI: 10.1136/jnnp.2005.073288] [Citation(s) in RCA: 13] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
To explore the aetiology of pathological laughing, a 65-year-old woman with pathological laughing was examined by 3-T functional magnetic resonance imaging (fMRI) before and after treatment with drugs. Here, we report that the patient consistently showed exaggerated pontine activation during the performance of three tasks before treatment, whereas abnormal pontine activation was no longer found after successful treatment with the selective serotonin reuptake inhibitor, paroxetine. Our findings in this first fMRI study of pathological laughing suggest that serotonergic replacement decreases the aberrant activity in a circuit that involves the pons.
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Affiliation(s)
- H Kosaka
- Department of Neuropsychiatry, University of Fukui Matsuoka, Fukui 910-1193, Japan.
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29
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Higashino K, Katoh S, Sairyo K, Sakai T, Kosaka H, Yasui N. Preservation of C7 spinous process does not influence the long-term outcome after laminoplasty for cervical spondylotic myelopathy. Int Orthop 2006; 30:362-5. [PMID: 16738851 PMCID: PMC3172770 DOI: 10.1007/s00264-005-0062-y] [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] [Subscribe] [Scholar Register] [Received: 11/11/2005] [Accepted: 11/15/2005] [Indexed: 10/24/2022]
Abstract
Axial pain is one of the major complications after laminoplasty, and preservation of C7 spinous process during the procedure can reduce the axial pain. However, it has not been elucidated whether laminoplasty preserving the C7 spinous process can maintain neurological improvement for a long time. The purpose of our retrospective study was to investigate the long-term neurological outcome after open-door laminoplasty preserving the C7 spinous process for cervical spondylotic myelopathy (CSM). Clinical and radiological outcomes were analysed in 42 patients who underwent open-door laminoplasty preserving C7 spinous process and followed up for more than 5 years. Neurological function was evaluated by means of the Japanese Orthopaedic Association (JOA) scoring system for cervical myelopathy. Axial pain was assessed using a visual analog scale (VAS) at the last examination. Alignment and motion of the cervical spine were measured from radiographs, and magnetic resonance imaging (MRI) was used to evaluate postoperative compression at C7. The mean JOA score was 9.4 before surgery and 12.0 at the latest follow-up. The mean VAS score in 26 patients score was 9.7/100. No compression of the spinal cord was observed in any MRI at the latest follow-up. Preservation of the C7 spinous process does not influence the long-term outcome of CSM after laminoplasty. Although we did not have a comparative group, the procedure described here should be considered as the solution.
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Affiliation(s)
- K. Higashino
- Department of Orthopedics, Institute of Health Biosciences, University of Tokushima Graduate School, 23-18-15, Kuramoto, Tokushima, 770-8503 Japan
| | - S. Katoh
- Department of Orthopedics, Institute of Health Biosciences, University of Tokushima Graduate School, 23-18-15, Kuramoto, Tokushima, 770-8503 Japan
| | - K. Sairyo
- Department of Orthopedics, Institute of Health Biosciences, University of Tokushima Graduate School, 23-18-15, Kuramoto, Tokushima, 770-8503 Japan
| | - T. Sakai
- Department of Orthopedics, Institute of Health Biosciences, University of Tokushima Graduate School, 23-18-15, Kuramoto, Tokushima, 770-8503 Japan
| | - H. Kosaka
- Department of Orthopedics, Institute of Health Biosciences, University of Tokushima Graduate School, 23-18-15, Kuramoto, Tokushima, 770-8503 Japan
| | - N. Yasui
- Department of Orthopedics, Institute of Health Biosciences, University of Tokushima Graduate School, 23-18-15, Kuramoto, Tokushima, 770-8503 Japan
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Tomioka K, Kumagai S, Kosaka H, Yoshida J, Tabuchi T, Kosaka J, Arai Y. [Equipment at the special nursing homes for the elderly: a workplace survey of new nursing homes in Osaka Prefecture]. Sangyo Eiseigaku Zasshi 2006; 48:49-55. [PMID: 16717403 DOI: 10.1539/sangyoeisei.48.49] [Citation(s) in RCA: 8] [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] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The number of those who need nursing care and the workers who provide it have been increasing year after year. In April 2000, the public nursing care insurance system was enacted by the Japanese government. After its enaction, care equipment came under scrutiny, but the situation regarding the installation of equipment is not fully understood. In order to understand the present state of care equipment in nursing facilities for the elderly, we conducted a workplace and interview survey. The surveyed facilities were 10 special nursing homes for the elderly in Osaka Prefecture which were established after April 2002. The average number of elderly residents was 79.0, the average value of degree of care was 3.52, and the average number of caregivers was 28.3 per facility. We found all facilities had installed some kinds of bathing equipment: stretcher type, 9 facilities; bath-chair type, 8 facilities. In the facilities with bath-chairs, 6 facilities had special bathtubs, and 6 facilities had general bathtubs. However, all facilities had the working principle that transfer should be done manually, and the equipment for transfer such as a lifts, a transfer and roller board were not be installed. In changing diapers, bed height adjustment was not possible. And the Japanese standard type of wheelchair has a non-detachable armrest, creating a structural barrier when transferring elderly people from a wheelchair to a toilet seat. At all facilities the basis of care was that caregivers should do it manually. In particular, all facilities had only a weak recognition of the risks of transfer. This investigation shows that facilities for the elderly should rethink elderly care based on a reduction of care load and most importantly protection of caregivers' health.
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Affiliation(s)
- Kimiko Tomioka
- Life and Hygiene Division, Osaka Prefectural Institute of Public Health, 3-69 Nakamichi 1-chome, Higashinari-ku, Osaka 537-0025, Japan.
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Wu H, Kosaka H, Kato J, Kuroda A, Ikeda T, Takiguchi N, Ohtake H. Cloning and characterization of Pseudomonas putida genes encoding the phosphate-specific transport system. J Biosci Bioeng 2005; 87:273-9. [PMID: 16232467 DOI: 10.1016/s1389-1723(99)80031-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/1998] [Accepted: 11/27/1998] [Indexed: 11/20/2022]
Abstract
The pstSCAB genes of Pseudomonas putida PRS2000, encoding the phosphate (Pi)-specific transport (Pst) system, were cloned. The pstS gene of Pseudomonas aeruginosa PAO1, of which the pstCAB genes had been cloned previously, was also cloned (Nikata, T. et al., Mol. Gen. Genet., 250, 692-698, 1996). The predicted translation products of the P. putida pstSCAB genes showed 83, 75, 78 and 88% amino acid identity with their P. aeruginosa counterparts. Two well-conserved Pho box sequences were found in the region upstream of the pstS gene (15/18 base identity with the consensus Pho box sequence) and in the intercistronic region between the pstS and pstC genes (11/18 base identity) of P. putida PRS2000. To investigate the functions of PstSCAB, the pstSC genes were inactivated by inserting a kanamycin resistance gene cassette into the chromosome of P. putida PRS2000. The resultant mutant, designated PNT1, failed to take up 32Pi even under conditions of Pi limitation. Strain PNT1 was also constitutive for alkaline phosphatase synthesis, as well as chemotaxis toward Pi, indicating that the Pst system is involved in the negative regulation of the pho regulon in P. putida. Although overexpression of the pstSCAB genes in P. putida PRS2000 resulted in decreased cell growth, this recombinant strain could remove Pi at a rate similar to that seen with the control strain.
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Affiliation(s)
- H Wu
- Department of Fermentation Technology, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8527, Japan
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Yoshida J, Kumagai S, Tabuchi T, Kosaka H, Akasaka S, Kasai H, Oda H. Negative association between serum dioxin level and oxidative DNA damage markers in municipal waste incinerator workers. Int Arch Occup Environ Health 2005; 79:115-22. [PMID: 16187124 DOI: 10.1007/s00420-005-0035-x] [Citation(s) in RCA: 8] [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] [Subscribe] [Scholar Register] [Received: 03/18/2005] [Accepted: 07/29/2005] [Indexed: 11/30/2022]
Abstract
OBJECTIVES To investigate the effect of dioxin on the formation of oxidative DNA damage and urinary mutagenicity, we measured the concentrations of serum dioxins and lymphocytic 8-hydroxydeoxyguanosine (8-OH-dG) in 57 male waste incinerator workers, urinary 8-OH-dG and urinary mutagenicity in 29 male waste incinerator workers. METHODS Information about the subjects was obtained from a questionnaire. Concentrations of polychlorinated dibenzo-p-dioxin (PCDD), polychlorinated dibenzofuran (PCDF), and coplanar-polychlorinated-biphenyl (Co-PCB) in serum samples from the workers were measured with a high-resolution gas chromatograph /high-resolution mass spectrometer. Lymphocytic and urinary 8-OH-dG levels were measured with a high-performance liquid chromatography-electrochemical detector system. The urinary mutagenicity was measured with umu assay. RESULTS The lymphocytic 8-OH-dG level showed a negative association with the serum dioxin level (total value of TEQ-PCDD, PCDF, and Co-PCB). Urinary 8-OH-dG did not show correlation with serum dioxin level, but showed positive correlation with the smoking index. CONCLUSIONS With respect to the subjects' serum dioxin level, dioxin did not increase the urinary 8-OH-dG level by oxidative DNA damage, but upregulation of the primary defenses with oxidative damage and/or DNA repair system activity might have occurred.
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Affiliation(s)
- Jin Yoshida
- Department of Environmental Health, Osaka Prefectural Institute of Public Health, Osaka, 1-3-69, Nakamichi, Higashinari-ku, 537-0025, Japan.
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Kumagai S, Tainaka H, Miyajima K, Miyano N, Kosaka J, Tabuchi T, Akasaka S, Kosaka H, Yoshida J, Tomioka K, Oda H. [Load on the low back of care workers in nursing homes for the elderly]. Sangyo Eiseigaku Zasshi 2005; 47:131-8. [PMID: 16130892 DOI: 10.1539/sangyoeisei.47.131] [Citation(s) in RCA: 9] [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: 11/16/2022]
Abstract
In order to evaluate the load on the low back of care workers in nursing homes for the elderly, basic activities and working postures were analyzed for six care workers using the 30-s snap reading method. The trunk inclination angle (TIA) was also measured continuously using an inclination monitor. The analysis of basic activities showed that 22.5% and 21.1% of the workshift were spent on 'bathing and ablution' and 'meal', respectively, and 9.3%, 8.7% and 8.3% were spent on 'assistance with elimination', 'assistance with moving and repositioning' and 'exchange of bed sheet', respectively. Total of the assistance activity was 43.7% of the workshift. The analysis of working posture showed that 'standing' and 'standing bent forward' accounted for 36.1% and 29.5%, respectively, of the workshift. Total of three postures loading the low back ('standing bent forward', 'squatting', 'kneeling') accounted for 39.0%. The time spent in TIA of 20 degrees or more was 45.7%. The postures loading the low back during 'bathing and ablution', 'exchange of bed sheet' and 'assistance with elimination' account for 68.3%, 58.2% and 49.6%, respectively, which suggests that these activities load the low back of the care workers considerably.
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Affiliation(s)
- Shinji Kumagai
- Osaka Prefectural Institute of Public Health, 1-3-69 Nakamichi, Higashinari-ku, Osaka 537-0025, Japan.
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Abstract
To analyze immunoregulation of autoreactive T cells specific for epidermal skin antigens, we crossed transgenic mice expressing ovalbumin selectively in keratinocytes under the keratin 5 promoter (K5-mOVA) with mice expressing a K(b)-restricted OVA-specific T cell receptor transgene (OT-I). In athymic double-transgenic mice, OT-I cells developed extrathymically and, at 8-12 weeks of age, initiated severe epidermal damage mimicking toxic epidermal necrolysis (TEN). In contrast, euthymic double-transgenic mice showed thymic deletion of OT-I cells, had few of these cells in the periphery, and never developed skin changes mimicking TEN. Adoptive transfer of OT-I cells isolated from euthymic double-transgenic mice induced TEN in athymic K5-mOVA single-transgenic mice. This spontaneous disease in athymic double-transgenic mice was prevented by transferring lymph node cells from euthymic mice, but was not prevented when CD4(+) or CD25(+) cells were depleted from this population. Although purified CD4(+)CD25(+) cells scarcely prevented the skin disease induced by adoptive transfer of OT-I cells, they efficiently prevented the disease when co-transferred with CD11c(+) dendritic cells. These results suggested that thymus-derived regulatory T cells cooperate with CD11c(+) dendritic cells to prevent life-threatening skin damage such as TEN.
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Affiliation(s)
- Hiroaki Azukizawa
- Department of Dermatology, Course of Molecular Medicine, Graduate School of Medicine, Osaka University, Osaka, Japan
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Yoshida J, Kumagai S, Tabuchi T, Kosaka H, Akasaka S, Oda H. Effects of dioxin on metabolism of estrogens in waste incinerator workers. Arch Environ Occup Health 2005; 60:215-22. [PMID: 17214292 DOI: 10.3200/aeoh.60.4.215-222] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The authors measured the concentrations of serum dioxins and urinary estrogen metabolites in 57 male waste incinerator workers to determine whether dioxin influenced the metabolism of estrogens. Concentrations of serum dioxin levels and urinary estrogen metabolites, such as estrone, 17beta-estradiol, 2-hydroxyestrone, 2-methoxyestrone, 2-hydroxyestradiol, 2-methoxyestradiol, 4-hydroxyestrone, 4-hydroxyestradiol, 4-methoxyestradiol, 16-hydroxyestrone, and estriol from the workers were measured. An analysis of covariance showed that mean estriol concentrations, adjusted for confounding factors among 3 serum dioxin levels, indicated a progressive increase with increasing serum dioxin level: 1.30, 1.41, and 2.02 nmol/mol creatinine at < 30.3, 30.3-39.7, and > 39.7 pg toxicity equivalent quantity/g lipid, respectively (F = 3.56, p = .036). This study showed that dioxin acts to metabolize estrogens to 16-hydroxyestrogens rather than to 2- or 4-hydroxyestrogens.
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Affiliation(s)
- Jin Yoshida
- Department of Environmental Health, Osaka Prefectural Institute of Public Health, Osaka, Japan.
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Tokudome S, Triningsih FXE, Ananta I, Suzuki S, Kuriki K, Akasaka S, Kosaka H, Ishikawa H, Azuma T, Moore MA. Rare Helicobacter pylori infection as a factor for the very low stomach cancer incidence in Yogyakarta, Indonesia. Cancer Lett 2005; 219:57-61. [PMID: 15770773 DOI: 10.1016/j.canlet.2004.09.043] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [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: 01/04/2023]
Abstract
To elucidate factors associated with the very low risk of gastric neoplasia in Yogyakarta, Indonesia, approximately 1/50 of the level in Japan, we recruited 52 male and 39 female participants from the general populace in the city of Yogyakarta in October 2003. Helicobacter pylori IgG antibodies were found in only 5% (0-13) (95% confidence interval) and 4% (0-9) for Javanese males and females, respectively, and were statistically lower than the 62% (58-65) and 57% (53-60), respectively, in Japanese. Furthermore, positive findings of pepsinogen test were only 0 and 2% (0-6) for males and females, in Yogyakarta, and were again significantly lower than the 23% (22-25) and 22% (20-23), in Japan. The very low incidence of stomach cancer in Yogyakarta may be due to a low prevalence of H. pylori infection and chronic atrophic gastritis.
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Affiliation(s)
- Shinkan Tokudome
- Department of Health Promotion and Preventive Medicine, Nagoya City University Graduate School of Medical Sciences, Mizuho-ku, Nagoya 467-8601, Japan.
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Koshiba M, Nakamachi Y, Kosaka H, Nakazawa T, Tsuji G, Kumagai S. Modification of cytokine milieu by A2A adenosine receptor signaling--possible application for inflammatory diseases. Nucleosides Nucleotides Nucleic Acids 2005; 23:1101-6. [PMID: 15571209 DOI: 10.1081/ncn-200027368] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Pro-inflammatory cytokine TNF-alpha (TNF) production from in vitro lipopolysaccharide (LPS)-stimulated human peripheral blood CD14+ cells (PB-CD14) was inhibited by A2A adenosine receptor (AdoR) (A2AR) or beta2 adrenergic receptor (ADR) (beta2R) signaling in a concentration-dependent manner. These inhibitory effects were presumably mediated by the increase in intracellular cAMP. Furthermore A2AR agonist and beta2R agonist synergistically inhibited the TNF production of LPS-stimulated PB-CD14 cells. These results suggest that the anti-inflammatory effect of extracellular adenosine is, at least in part, due to the modification of the cytokine milieu via A2A signaling, and that the targeting of both A2AR and beta2R may have strong therapeutic potential for the inflammatory diseases.
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Affiliation(s)
- M Koshiba
- Department Biomedical Informatics, Kobe University Graduate School of Medicine, Japan.
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Tokudome S, Kuriki K, Suzuki S, Akasaka S, Kosaka H, Ishikawa H, Yoshimura T, Azuma T, Duc Van D, Cong Khan N, Sriamporn S, Wiangnon S, Triningsih FE, Moore MA. Re: helicobacter pylori infection and gastric cancer: facing the enigmas. Int J Cancer 2004; 112:166-7; author reply 168-9. [PMID: 15305392 DOI: 10.1002/ijc.20392] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Abstract
OBJECTIVES In order to clarify the effect of lead on higher cerebral functions, lead-exposed workers (Pb group) and controls were examined for event-related potentials. SUBJECTS AND METHODS Fourteen lead-exposed workers with a mean age of 57.1 yr (SD=4.27, range 48-64; lead concentration of whole blood ranged from 33 to 106 microg/dl with a mean of 58.6 and SD 28.6 microg/dl) and 19 age-matched control workers with a mean age of 57.3 yr (SD=4.80, range 48-65) were examined. Visual P300 was recorded by button pushing to the target image (minute checkerboard pattern, 20%), and the NO-GO potential by no button pushing to the target image (same as above, 50%). RESULTS Latencies of P300 in the Pb group (475+/-46.0 ms) were significantly delayed compared with those in controls (407+/-42.4 ms, p<0.01 by Student's t test). Amplitudes of the NO-GO potential in the Pb group (4.59+/-2.04 microV) significantly increased compared with those in the controls (3.18+/-1.41 microV, p<0.05). CONCLUSION The finding suggests that lead exposure affects high cerebral functions of cognition and attention, but is unclear in suppression of movement.
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Affiliation(s)
- Mamoru Hirata
- Department of Research Planning, National Institute of Industrial Health, Nagao 6-21-1, Tama-ku, Kawasaki 214-8585, Japan
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Murata T, Takahashi T, Hamada T, Omori M, Kosaka H, Yoshida H, Wada Y. Individual trait anxiety levels characterizing the properties of zen meditation. Neuropsychobiology 2004; 50:189-94. [PMID: 15292676 DOI: 10.1159/000079113] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.2] [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: 11/19/2022]
Abstract
Meditation is a specific consciousness state in which deep relaxation and increased internalized attention coexist. There have been various neurophysiological studies on meditation. However, the personal predispositions/traits that characterize the properties of meditation have not been adequately studied. We analyzed changes in neurophysiological parameters [EEG coherence and autonomic nervous activity using heart rate variability (HRV) as an index] during Zen meditation, and evaluated the results in association with trait anxiety (assessed by Spielberger's State-Trait Anxiety Inventory) in 22 healthy adults who had not previously practiced any form of meditation. During meditation, in terms of mean values in all subjects, an increase in slow alpha interhemispheric EEG coherence in the frontal region, an increase in high-frequency (HF) power (as a parasympathetic index of HRV), and a decrease in the ratio of low-frequency to HF power (as a sympathetic index of HRV) were observed. Further evaluation of these changes in individuals showed a negative correlation between the percent change (with the control condition as the baseline) in slow alpha interhemispheric coherence reflecting internalized attention and the percent change in HF reflecting relaxation. The trait anxiety score was negatively correlated with the percent change in slow alpha interhemispheric coherence in the frontal region and was positively correlated with the percent change in HF. These results suggest that lower trait anxiety more readily induces meditation with a predominance of internalized attention, while higher trait anxiety more readily induces meditation with a predominance of relaxation.
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Affiliation(s)
- T Murata
- Department of Neuropsychiatry, Faculty of Medical Sciences, University of Fukui, Fukui, Japan.
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Nakai K, Kubota Y, Kosaka H. Inhibition of nuclear factor kappa B activation and inducible nitric oxide synthase transcription by prolonged exposure to high glucose in the human keratinocyte cell line HaCaT. Br J Dermatol 2004; 150:640-6. [PMID: 15099358 DOI: 10.1111/j.0007-0963.2004.05867.x] [Citation(s) in RCA: 13] [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 In human skin, inducible nitric oxide synthase (iNOS) appears to be a key enzyme during wound healing and has roles in protection from infection. We speculated that diabetic skin complications such as delayed wound healing and skin infection were due to iNOS activity altered by high glucose in skin keratinocytes. OBJECTIVES The purpose of this study was to see how high levels of glucose affect iNOS activity in the human keratinocyte cell line (HaCaT). METHODS HaCaT cells were exposed to high glucose for 1 day or 10 days. We measured nitric oxide (NO) end product nitrite in the culture medium using the Griess reagent, and intracellular tetrahydrobiopterin (BH(4), a cofactor of NOS) content by using high-performance liquid chromatography, analysed the expression level of iNOS mRNA by the reverse transcriptase-polymerase chain reaction method and evaluated the DNA binding activity of nuclear factor kappa B (NF-kappaB) by enzyme-immunoassay. RESULTS Short-term exposure (1 day) to a high level of glucose increased BH(4) and iNOS activity at the post-translational level. However, long-term exposure (10 days) to high glucose downregulates NF-kappaB binding activity and inhibits iNOS transcription and its activity. CONCLUSIONS Pretreatment with high glucose for 10 days down-regulated NF-kappaB activity and inhibited iNOS transcription and NO production, implying the involvement of a deficiency in NO synthesis in both skin infection and impaired wound healing in diabetic patients.
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Affiliation(s)
- K Nakai
- Department of Dermatology, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Miki-Kita, Kagawa 761-0793, Japan
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Kosaka H, Omori M, Iidaka T, Murata T, Shimoyama T, Okada T, Sadato N, Yonekura Y, Wada Y. Neural substrates participating in acquisition of facial familiarity: an fMRI study. Neuroimage 2004; 20:1734-42. [PMID: 14642483 DOI: 10.1016/s1053-8119(03)00447-6] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.0] [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: 11/16/2022] Open
Abstract
The amygdala is related to recognition of faces and emotions, and functional magnetic resonance imaging (fMRI) studies have reported that the amygdala is habituated over time with repetition of facial stimuli. When subjects are presented repeatedly with unfamiliar faces, they come to gradually recognize the unfamiliar faces as familiar. To investigate the brain areas participating in the acquisition of familiarity to repeatedly presented unfamiliar faces, we conducted an fMRI study in 16 healthy subjects. During the task periods, the subjects were instructed to see presented unfamiliar faces repeatedly and to judge whether the face was male or female or whether the face had emotional valences. The experiment consisted of nine sessions. To clarify the brain areas that showed increasing or decreasing activation as the experimental session proceeded, we analyzed the fMRI data using specified linear covariates in the face recognition task from the first session to the ninth session. Imaging data were investigated on a voxel-by-voxel basis for single-group analysis according to the random effect model using Statistical Parametric Mapping. The bilateral posterior cingulate cortices showed significant increases in activity as the experimental sessions proceeded, while the activation in the right amygdala and the left medial fusiform gyrus decreased. Thus, the posterior cingulate cortex may play an important role in the acquisition of facial familiarity.
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Affiliation(s)
- H Kosaka
- Department of Neuropsychiatry, Fukui Medical University, Matsuoka, Fukui, 910-1193, Japan.
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Kumagai S, Oda H, Tabuchi T, Akasaka S, Kosaka H, Yoshida J, Koda S, Mouri I. [Relationships between dioxin concentrations in deposited dust and those in serum of workers at municipal waste incineration plants]. Sangyo Eiseigaku Zasshi 2004; 46:1-9. [PMID: 15024837 DOI: 10.1539/sangyoeisei.46.1] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
Relationships between concentrations of polychlorodibenzo-p-dioxins (PCDDs) and polychlorodibenzofurans (PCDFs) in deposited dust and those in the serum of incinerator workers were examined at 13 municipal incineration plants. The following results were found. 1) Dust analysis showed that dominant constituents were octachlorodibenzo-p-dioxin (OCDD) and 1, 2, 3, 4, 6, 7, 8-heptachlorodibenzo-p-dioxin (HpCDD) among PCDDs, and 1, 2, 3, 4, 6, 7, 8-heptachlorodibenzofuran (HpCDF) and octachlorodibenzofuran (OCDF) among PCDFs. The toxicity equivalents (TEQs) of total PCDDs and PCDFs in the deposited dust were 0.54 to 33 ngTEQ/g, which were about 1,000 to 10,000 times as high as those in general soil. 2) The mean of serum TEQ of PCDDs, that of PCDFs and that of total PCDDs and PCDFs in the incinerator workers were 16, 12 and 28 pg TEQ/g lipid, respectively, for all the incinerator workers. Concentrations of hexachlorodibenzofurans (HxCDFs) and HpCDFs in the serum were significantly higher in the incinerator workers than the general population, which suggests that these workers had inhaled these chemicals during their work. 3) The concentration of 1, 2, 3, 4, 6, 7, 8-HpCDF and the TEQ value of PCDFs and in the serum were positively correlated with those in dust except for three plants where large-scale remodeling of the equipment was conducted within the past seven years. Consequently, deposited dust analysis may be useful for judging whether health examination containing blood dioxin measurement is necessary or not.
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Affiliation(s)
- Shinji Kumagai
- Department of Environmental Health, Osaka Prefectural Institute of Public Health, 1-3-69 Nakamichi, Higashinari-ku, Osaka 537-0025, Japan.
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Nakamori A, Yamaguchi Y, Kurimoto I, Kira M, Kosaka H, Itami S, Yoshikawa K. Vesiculobullous dermatomyositis with panniculitis without muscle disease. J Am Acad Dermatol 2003; 49:1136-9. [PMID: 14639401 DOI: 10.1016/s0190-9622(03)00418-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Vesicles and bullae formation is rare in dermatomyositis. We describe a 60-year-old woman who presented with vesiculobullous dermatomyositis with panniculitis and no muscle disease.
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Affiliation(s)
- Aya Nakamori
- Department of Dermatology, Osaka University Graduate School of Medicine, Yamadaoka 2-2, Suita-shi, Osaka 565-0871, USA
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Hamada T, Murata T, Omori M, Takahashi T, Kosaka H, Wada Y, Yoshida H. Abnormal nocturnal blood pressure fall in senile-onset depression with subcortical silent cerebral infarction. Neuropsychobiology 2003; 47:187-91. [PMID: 12824741 DOI: 10.1159/000071213] [Citation(s) in RCA: 10] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Recent studies have shown that the complication rate of silent cerebral infarction (SCI) in patients with geriatric depression increases with the age at the onset of depression. This study investigated the cardiovascular factors involved in the development of SCI in geriatric depression. Thirty-six patients with geriatric depression were classified according to the age at onset into 16 who developed depression at the age of <50 years (early-onset group) and 20 who developed depression at the age of > or =50 years (late-onset group). The incidence of SCI assessed by subcortical hyperintensity on MRI images, office blood pressure (BP), nocturnal systolic BP fall pattern examined by 24-hour ambulatory BP monitoring, and the severity of carotid atherosclerosis examined by B-mode ultrasonography were compared between the two groups. Furthermore, the association between the presence or absence of SCI and the nocturnal systolic BP fall pattern or the severity of carotid atherosclerosis was evaluated. The SCI complication rate was higher in the late-onset group (55.0%) than in the early-onset group (18.7%). The office BP and mean 24-hour BP did not differ significantly between the two groups. Abnormal nocturnal systolic BP fall patterns were observed in 85.0% (nondipper type showing a fall of <10% in 60.0%, extreme-dipper type showing a fall of > or =20% in 25.0%) in the late-onset group, which was significantly higher than the incidence in the early-onset group (18.7%). No significant difference was observed in any parameter of carotid atherosclerosis between the two groups. In addition, the patients with SCI more frequently showed abnormal nocturnal systolic BP fall patterns than those without SCI. These results suggest that abnormal nocturnal BP fall patterns appear to be involved in the development of SCI in senile-onset depression.
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Affiliation(s)
- T Hamada
- Department of Clinical and Laboratory Science, Fukui Medical University, Matsuoka, Fukui 910-1193, Japan
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Azukizawa H, Kosaka H, Sano S, Heath WR, Takahashi I, Gao XH, Sumikawa Y, Okabe M, Yoshikawa K, Itami S. Induction of T-cell-mediated skin disease specific for antigen transgenically expressed in keratinocytes. Eur J Immunol 2003; 33:1879-88. [PMID: 12811848 DOI: 10.1002/eji.200323630] [Citation(s) in RCA: 82] [Impact Index Per Article: 3.9] [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: 11/09/2022]
Abstract
Transgenic mice were generated to establish an animal model for T-cell-mediated autoimmune skin disease. A membrane-bound form of OVA (mOVA) was specifically expressed under the control of the keratin 5 (K5) promoter in the epidermal and hair follicular keratinocytes of mice. Syngeneic, wild-type mice rejected the skin grafts of K5-mOVA mice with the generation of OVA-specific CTL. To study the CTL response against K5-mOVA skin, we used OT-I transgenic mice, which produce K(b)-restricted, OVA-specific CD8+ T cells. Accelerated rejection of K5-mOVA skin was demonstrated when transplanted onto OT-I mice. Furthermore, OT-I cells, when adoptively transferred into K5-mOVA mice, underwent activation and vigorous proliferation in the skin-draining lymph nodes. A bone-marrow-reconstitution assay demonstrated that K(b) presentation by bone-marrow-derived cells, but not epithelial cells, was required for this response, indicating that cross-priming was the basis for immunity in this model. Finally, transferred OT-I cells, activated by cross-priming, targeted the skin of K5-mOVA mice, resulting in development of skin lesions that were reminiscent of toxic epidermal necrolysis. We conclude that our system provides a useful model for autoimmune skin diseases and will aid understanding of the pathomechanism of drug eruption, viral exanthema, and graft-versus-host disease.
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Affiliation(s)
- Hiroaki Azukizawa
- Department of Dermatology, Course of Molecular Medicine, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
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Abstract
The present study was designed to evaluate the role of nitric oxide (NO) for angiogenesis. Angiogenesis was elicited upon mouse cornea by chemical cautery with silver nitrate. Angiogenic activity was evaluated by measuring the length of vascular sprout with or without administration of NO synthase (NOS) inhibitor, N((G))-nitro-L-arginine-methyl ester (L-NAME). In the pericorneal plexus, a circulatory loop situated in the same topological situation for all individuals was selected to observe vascular sprouting. At 72 h after cauterization, the length of the longest vascular sprout was measured using the perfused whole-mount cornea. The length of nontreated mice (83 +/- 83 microm) was significantly longer than that of L-NAME treated mice (33 +/- 24.6 microm). To address the possible contribution of production of vascular endothelial growth factor (VEGF) and NO, we measured mRNAs of VEGF and inducible NOS. The mRNA level of VEGF increased to 170% of the nontreated level at 12 h after cauterization and returned to the nontreated level by 24 h after cauterization. mRNA of inducible NOS remained elevated 24 h after cauterization. These results suggest that the response of preexisting vessels to angiogenic stimulus via NO is of importance in the process of angiogenesis, i.e., vascular sprouting is promoted by NO production. This might be attributable to enhancement of an increase in vascular permeability and /or vasodilation via NO.
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Affiliation(s)
- K Kon
- Department of Medical Laboratory Technology, Ehime College of Health Science, Ehime, Japan.
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Murakami Y, Kosaka H, Maeda Y, Nishimura JI, Inoue N, Ohishi K, Okabe M, Takeda J, Kinoshita T. Inefficient response of T lymphocytes to glycosylphosphatidylinositol anchor-negative cells: implications for paroxysmal nocturnal hemoglobinuria. Blood 2002; 100:4116-22. [PMID: 12393537 DOI: 10.1182/blood-2002-06-1669] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.5] [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: 11/20/2022] Open
Abstract
Paroxysmal nocturnal hemoglobinuria (PNH) is a hematopoietic stem cell disorder in which clonal cells defective in glycosylphosphatidylinositol (GPI) biosynthesis are expanded, leading to complement-mediated hemolysis. PNH is often associated with bone marrow suppressive conditions, such as aplastic anemia. One hypothetical mechanism for the clonal expansion of GPI(-) cells in PNH is that the mutant cells escape attack by autoreactive cytotoxic cells that are thought to be responsible for aplastic anemia. Here we studied 2 model systems. First, we made pairs of GPI(+) and GPI(-) EL4 cells that expressed major histocompatibility complex (MHC) class II molecules and various types of ovalbumin. When the GPI-anchored form of ovalbumin was expressed on GPI(+) and GPI(-) cells, only the GPI(+) cells presented ovalbumin to ovalbumin-specific CD4(+) T cells, indicating that if a putative autoantigen recognized by cytotoxic cells is a GPI-anchored protein, GPI(-) cells are less sensitive to cytotoxic cells. Second, antigen-specific as well as alloreactive CD4(+) T cells responded less efficiently to GPI(-) than GPI(+) cells in proliferation assays. In vivo, when GPI(-) and GPI(+) fetal liver cells, and CD4(+) T cells alloreactive to them, were cotransplanted into irradiated hosts, the contribution of GPI(-) cells in peripheral blood cells was significantly higher than that of GPI(+) cells. The results obtained with the second model suggest that certain GPI-anchored protein on target cells is important for recognition by T cells. These results provide the first experimental evidence for the hypothesis that GPI(-) cells escape from immunologic attack.
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Affiliation(s)
- Yoshiko Murakami
- Department of Immunoregulation, Research Institute for Microbial Diseases, Osaka University, Suita, Japan
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Kosaka H, Omori M, Murata T, Iidaka T, Yamada H, Okada T, Takahashi T, Sadato N, Itoh H, Yonekura Y, Wada Y. Differential amygdala response during facial recognition in patients with schizophrenia: an fMRI study. Schizophr Res 2002; 57:87-95. [PMID: 12165379 DOI: 10.1016/s0920-9964(01)00324-3] [Citation(s) in RCA: 132] [Impact Index Per Article: 6.0] [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: 11/29/2022]
Abstract
Human lesion or neuroimaging studies suggest that amygdala is involved in facial emotion recognition. Although impairments in recognition of facial and/or emotional expression have been reported in schizophrenia, there are few neuroimaging studies that have examined differential brain activation during facial recognition between patients with schizophrenia and normal controls. To investigate amygdala responses during facial recognition in schizophrenia, we conducted a functional magnetic resonance imaging (fMRI) study with 12 right-handed medicated patients with schizophrenia and 12 age- and sex-matched healthy controls. The experiment task was a type of emotional intensity judgment task. During the task period, subjects were asked to view happy (or angry/disgusting/sad) and neutral faces simultaneously presented every 3 s and to judge which face was more emotional (positive or negative face discrimination). Imaging data were investigated in voxel-by-voxel basis for single-group analysis and for between-group analysis according to the random effect model using Statistical Parametric Mapping (SPM). No significant difference in task accuracy was found between the schizophrenic and control groups. Positive face discrimination activated the bilateral amygdalae of both controls and schizophrenics, with more prominent activation of the right amygdala shown in the schizophrenic group. Negative face discrimination activated the bilateral amygdalae in the schizophrenic group whereas the right amygdala alone in the control group, although no significant group difference was found. Exaggerated amygdala activation during emotional intensity judgment found in the schizophrenic patients may reflect impaired gating of sensory input containing emotion.
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Affiliation(s)
- H Kosaka
- Department of Neuropsychiatry, Fukui Medical University, Matsuoka, Fukui, 910-1193, Japan. hirotaka @fmsrsa.fukui-med.ac.jp
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Yoshida S, Kajimoto Y, Yasuda T, Watada H, Fujitani Y, Kosaka H, Gotow T, Miyatsuka T, Umayahara Y, Yamasaki Y, Hori M. PDX-1 induces differentiation of intestinal epithelioid IEC-6 into insulin-producing cells. Diabetes 2002; 51:2505-13. [PMID: 12145164 DOI: 10.2337/diabetes.51.8.2505] [Citation(s) in RCA: 93] [Impact Index Per Article: 4.2] [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: 01/13/2023]
Abstract
A homeodomain containing transcription factor PDX-1 can induce beta-cell-specific gene expressions in some non-beta-cells and may therefore be useful for future diabetes gene/cell therapy. Among the potential target organs or tissues for transcription factor-mediated induction of beta-cell-like differentiation are the intestinal epithelial cells. They have certain merits over other tissues and organs in terms of accessibility for gene delivery and of similarity in developmental background to the pancreatic primordium. In this study, we used an intestinal epithelium-derived cell line, IEC-6 cells, and investigated the possible effects of PDX-1 expression in those cells. By exogenous expression of the PDX-1 gene, IEC-6 cells started expressing multiple beta-cell-specific genes such as amylin, glucokinase, and Nkx6.1, which were not found in the original IEC-6 cells. Insulin gene expression, which was missing initially even in the PDX-1-transfected IEC-6 cells, became detectable when the cells were transplanted under the renal capsule of a rat. When the PDX-1(+) IEC-6 cells were kept in vitro, treatment with betacellulin could also confer insulin gene expression to them. Although insulin secretory granules became visible by electron microscopy, they were secreted regardless of glucose concentration. The in vivo or in vitro inductions of the insulin gene expression were not observed in the PDX-1(-) IEC-6 cells. Thus, our present observations demonstrate the potency of intestinal epithelial cells as a tool for diabetes gene/cell therapy and provide further support for the potency of PDX-1 in driving beta-cell-like differentiation in non-beta-cells.
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Affiliation(s)
- Shigeru Yoshida
- Department of Internal Medicine and Therapeutics, Osaka University Graduate School of Medicine, Suita City, Japan
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