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Tanaka R, Kurihara Y, Ouchi T, Funakoshi T, Takahashi H, Arao N, Tanikawa A, Kubo A, Amagai M, Yamagami J. 064 Early Clinical Score Changes Predict Additional Treatment Necessity In Pemphigus/Pemphigoid. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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2
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Kamata A, Kurihara Y, Funakoshi T, Takahashi H, Kuroda K, Hachiya T, Amagai M, Yamagami J. How certain molecules of the immune system affect bullous pemphigoid. Br J Dermatol 2020. [DOI: 10.1111/bjd.18988] [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: 11/30/2022]
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3
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Kamata A, Kurihara Y, Funakoshi T, Takahashi H, Kuroda K, Hachiya T, Amagai M, Yamagami J. 免疫系统的某些分子如何影响大疱性类天疱疮. Br J Dermatol 2020. [DOI: 10.1111/bjd.18999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Inoue-Masuda Y, Hirai I, Yanagisawa E, Kurihara Y, Funakoshi T, Yamagami J, Amagai M, Kubo A. An adult case of X-linked chronic granulomatous disease with skin ulcer on the nose and internal canthus. J Eur Acad Dermatol Venereol 2020; 34:e388-e391. [PMID: 32043662 DOI: 10.1111/jdv.16291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Y Inoue-Masuda
- Department of Dermatology, Keio University School of Medicine, Tokyo, Japan
| | - I Hirai
- Department of Dermatology, Keio University School of Medicine, Tokyo, Japan
| | - E Yanagisawa
- Department of Dermatology, Keio University School of Medicine, Tokyo, Japan
| | - Y Kurihara
- Department of Dermatology, Keio University School of Medicine, Tokyo, Japan
| | - T Funakoshi
- Department of Dermatology, Keio University School of Medicine, Tokyo, Japan
| | - J Yamagami
- Department of Dermatology, Keio University School of Medicine, Tokyo, Japan
| | - M Amagai
- Department of Dermatology, Keio University School of Medicine, Tokyo, Japan
| | - A Kubo
- Department of Dermatology, Keio University School of Medicine, Tokyo, Japan
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Kakuta R, Kurihara Y, Yamagami J, Miyamoto J, Funakoshi T, Tanikawa A, Amagai M. Results of the guideline‐based treatment for pemphigus: a single‐centre experience with 84 cases. J Eur Acad Dermatol Venereol 2020; 34:1324-1330. [DOI: 10.1111/jdv.16188] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 12/16/2019] [Indexed: 12/24/2022]
Affiliation(s)
- R. Kakuta
- Department of Dermatology Keio University School of Medicine Tokyo Japan
| | - Y. Kurihara
- Department of Dermatology Keio University School of Medicine Tokyo Japan
| | - J. Yamagami
- Department of Dermatology Keio University School of Medicine Tokyo Japan
| | - J. Miyamoto
- Department of Dermatology Keio University School of Medicine Tokyo Japan
| | - T. Funakoshi
- Department of Dermatology Keio University School of Medicine Tokyo Japan
| | - A. Tanikawa
- Department of Dermatology Keio University School of Medicine Tokyo Japan
| | - M. Amagai
- Department of Dermatology Keio University School of Medicine Tokyo Japan
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Toshima S, Kurihara Y, Wang EHC, Nomura H, Hayashi Y, Christiano AM, Amagai M, Umegaki-Arao N. Authors' reply to: Comment on the article by Dr. Toshima about alopecia areata multiplex following autologous dermal micrograft injection. J Eur Acad Dermatol Venereol 2020; 34:e222-e223. [PMID: 31903625 DOI: 10.1111/jdv.16177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- S Toshima
- Department of Dermatology, Keio University School of Medicine, Tokyo, Japan
| | - Y Kurihara
- Department of Dermatology, Keio University School of Medicine, Tokyo, Japan
| | - E H C Wang
- Departments of Dermatology and Genetics & Development, Columbia University, New York, NY, USA
| | - H Nomura
- Department of Dermatology, Keio University School of Medicine, Tokyo, Japan
| | - Y Hayashi
- Department of Pathology, Keio University School of Medicine, Tokyo, Japan
| | - A M Christiano
- Departments of Dermatology and Genetics & Development, Columbia University, New York, NY, USA
| | - M Amagai
- Department of Dermatology, Keio University School of Medicine, Tokyo, Japan
| | - N Umegaki-Arao
- Department of Dermatology, Keio University School of Medicine, Tokyo, Japan
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Kamata A, Kurihara Y, Funakoshi T, Takahashi H, Kuroda K, Hachiya T, Amagai M, Yamagami J. Basement membrane zone IgE deposition is associated with bullous pemphigoid disease severity and treatment results. Br J Dermatol 2019; 182:1221-1227. [PMID: 31330562 DOI: 10.1111/bjd.18364] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/17/2019] [Indexed: 12/26/2022]
Abstract
BACKGROUND A subset of patients with bullous pemphigoid (BP) show deposition of IgE in the basement membrane zone (BMZ), yet the relationship between BMZ IgE and the clinical presentation of BP remains unclear. OBJECTIVES To investigate the relationship between IgE deposition, IgE levels in serum, and disease severity in patients with BP. METHODS We investigated IgE autoantibodies in 53 patients with BP by direct immunofluorescence (DIF), indirect immunofluorescence and enzyme-linked immunosorbent assay. RESULTS Of 53 patients with BP, 23 (43%) had IgE deposition, 10 (19%) of whom were IgE+ and 13 (25%) IgE± according to DIF analyses. Erosion/blister (E/B) Bullous Pemphigoid Disease Area Index (BPDAI) scores were significantly higher in IgE+ patients than in IgE- patients (n = 15), while no significant differences were found for urticaria/erythema BPDAI scores. IgE+ and IgE± patients took longer to reduce their E/B BPDAI score by 75% after systemic corticosteroid treatment. BP180-IgE levels were significantly higher among IgE+ patients than IgE± or IgE- patients (n = 10). Total IgE levels in the serum and blood eosinophil counts did not differ between IgE+, IgE± and IgE- patients. A significant correlation was detected between BP180-IgG and BP180-IgE, but not between BPDAI scores and any of BP180-IgG, BP180-IgE or blood eosinophil count. CONCLUSIONS IgE deposition in the BMZ is associated with higher E/B BPDAI scores and longer treatment periods. We conclude that IgE binding in the BMZ may contribute to BP pathogenesis by promoting blister formation. What's already known about this topic? BP180-IgE autoantibodies have an important role in the pathogenesis of bullous pemphigoid (BP). A subset of patients with BP display deposition of IgE within the basement membrane zone (BMZ) of skin tissue. What does this study add? Patients with in vivo IgE deposition in the BMZ displayed higher erosion/blister Bullous Pemphigoid Disease Area Index (BPDAI) scores, while urticaria/erythema BPDAI scores were not significantly different. Patients with in vivo IgE deposition in the BMZ took longer to reduce their erosion/blister BPDAI score by 75% after systemic corticosteroid treatment. BP180-specific IgE levels in serum were higher among patients with linear IgE deposition in the BMZ than in those with granular or no IgE deposition.
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Affiliation(s)
- A Kamata
- Department of Dermatology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Y Kurihara
- Department of Dermatology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - T Funakoshi
- Department of Dermatology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - H Takahashi
- Department of Dermatology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - K Kuroda
- Medical and Biological Laboratories Co., Ltd, Nagoya, Japan
| | - T Hachiya
- Medical and Biological Laboratories Co., Ltd, Nagoya, Japan
| | - M Amagai
- Department of Dermatology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - J Yamagami
- Department of Dermatology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
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Toshima S, Kurihara Y, Wang E, Nomura H, Hayashi Y, Christiano A, Amagai M, Umegaki‐Arao N. Alopecia areata multiplex following autologous dermal micrograft injection for treatment of androgenetic alopecia. J Eur Acad Dermatol Venereol 2019; 33:e397-e399. [DOI: 10.1111/jdv.15701] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- S. Toshima
- Department of Dermatology Keio University School of Medicine Tokyo Japan
| | - Y. Kurihara
- Department of Dermatology Keio University School of Medicine Tokyo Japan
| | - E.H.C. Wang
- Departments of Dermatology and Genetics & Development Columbia University New York NY USA
| | - H. Nomura
- Department of Dermatology Keio University School of Medicine Tokyo Japan
| | - Y. Hayashi
- Department of Pathology Keio University School of Medicine Tokyo Japan
| | - A.M. Christiano
- Departments of Dermatology and Genetics & Development Columbia University New York NY USA
| | - M. Amagai
- Department of Dermatology Keio University School of Medicine Tokyo Japan
| | - N. Umegaki‐Arao
- Department of Dermatology Keio University School of Medicine Tokyo Japan
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Nomura H, Kurihara Y, Saito M, Fukushima A, Shintani Y, Shiiyama R, Toshima S, Kamata A, Yamagami J, Funakoshi T, Kameyama K, Amagai M, Kubo A, Umegaki-Arao N. Azathioprine-induced alopecia and leukopenia associated with NUDT15 polymorphisms. J Eur Acad Dermatol Venereol 2018; 32:e386-e389. [PMID: 29704867 DOI: 10.1111/jdv.15028] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- H Nomura
- Department of Dermatology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, 160-8582, Japan
| | - Y Kurihara
- Department of Dermatology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, 160-8582, Japan
| | - M Saito
- Department of Dermatology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, 160-8582, Japan
| | - A Fukushima
- Department of Dermatology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, 160-8582, Japan
| | - Y Shintani
- Department of Dermatology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, 160-8582, Japan
| | - R Shiiyama
- Department of Dermatology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, 160-8582, Japan
| | - S Toshima
- Department of Dermatology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, 160-8582, Japan
| | - A Kamata
- Department of Dermatology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, 160-8582, Japan
| | - J Yamagami
- Department of Dermatology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, 160-8582, Japan
| | - T Funakoshi
- Department of Dermatology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, 160-8582, Japan
| | - K Kameyama
- Division of Diagnostic Pathology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, 160-8582, Japan
| | - M Amagai
- Department of Dermatology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, 160-8582, Japan
| | - A Kubo
- Department of Dermatology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, 160-8582, Japan
| | - N Umegaki-Arao
- Department of Dermatology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, 160-8582, Japan
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10
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Horikawa H, Kurihara Y, Funakoshi T, Umegaki-Arao N, Takahashi H, Kubo A, Tanikawa A, Kodani N, Minami Y, Meguro S, Itoh H, Izumi K, Nishie W, Shimizu H, Amagai M, Yamagami J. Unique clinical and serological features of bullous pemphigoid associated with dipeptidyl peptidase-4 inhibitors. Br J Dermatol 2018; 178:1462-1463. [PMID: 29478242 DOI: 10.1111/bjd.16479] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- H Horikawa
- Department of Dermatology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Y Kurihara
- Department of Dermatology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - T Funakoshi
- Department of Dermatology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - N Umegaki-Arao
- Department of Dermatology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - H Takahashi
- Department of Dermatology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - A Kubo
- Department of Dermatology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - A Tanikawa
- Department of Dermatology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - N Kodani
- Division of Endocrinology, Metabolism, and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan.,Center for Preventative Medicine, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Y Minami
- Division of Endocrinology, Metabolism, and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - S Meguro
- Division of Endocrinology, Metabolism, and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - H Itoh
- Division of Endocrinology, Metabolism, and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - K Izumi
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Kita-ku, Sapporo, Japan
| | - W Nishie
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Kita-ku, Sapporo, Japan
| | - H Shimizu
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Kita-ku, Sapporo, Japan
| | - M Amagai
- Department of Dermatology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - J Yamagami
- Department of Dermatology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
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Kurihara Y, Watanabe K, Ohno-Machado L, Tanaka H, Ohashi K. Feasibility Evaluation of Smart Stretcher to Improve Patient Safety during Transfers. Methods Inf Med 2018; 50:253-64. [DOI: 10.3414/me0616] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2008] [Accepted: 03/22/2010] [Indexed: 11/09/2022]
Abstract
SummaryObjectives: The integration of noninvasive vital sign sensors and wireless sensor networks into intelligent alarm systems has the potential to improve patient safety. We developed a wireless network-based system (“Smart Stretcher”), which was designed to constantly monitor patient vital signs and detect apnea during transfers within a hospital. The system alerts medical staff in case of an emergency through a wireless network.Methods: A small-scale technical feasibility study was conducted to assess the performance of the system in a simulated hospital environment. Smart Stretcher consists of three components: a small air-mat type pressure sensor measuring respiratory rate and detecting apnea, a patient identification system using RFID technology, and an indoor positioning system using a ZigBee wireless network. In the feasibility experiment, two nurses transferred four subjects who stopped breathing for 10 seconds, after which we calculated the accuracy of apnea detections, repeating this at varying speeds and subject positions. We alsoperformed asubjective evaluation of perceptions and expectations of Smart Stretcher by nurses.Results: The system could detect apnea in all subjects at a rate of over 90%, patient IDs and locations were correctly detected in real time, and the system could alert medical staff. In addition, the results of nurse’s evaluations were mostly positive.Conclusions: The technical feasibility experiment and evaluation of Smart Stretcher suggest that the system could play a key role in monitoring patients during hospital transfers.
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Gemma A, Kusumoto M, Kurihara Y, Masuda N, Banno S, Endo Y, Houzawa H, Ueno N, Ohki E, Yoshimura A. P1.03-008 Analysis of Data on Interstitial Lung Disease Onset and Its Risk Following Treatment of ALK-positive NSCLC with Xalkori. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.812] [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: 10/18/2022]
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13
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Yasukochi Y, Kido-Nakahara M, Nakahara T, Kuroki R, Koga T, Mashino T, Kurihara Y, Furue M. Clinical bandings of Patient-Oriented Eczema Measure scores among Japanese patients with atopic eczema. Br J Dermatol 2017; 177:e211-e212. [PMID: 28429820 DOI: 10.1111/bjd.15599] [Citation(s) in RCA: 4] [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: 12/01/2022]
Affiliation(s)
- Y Yasukochi
- Department of Dermatology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.,Department of Dermatology, Fukuoka Higashi Medical Center, Fukuoka, Japan
| | - M Kido-Nakahara
- Department of Dermatology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - T Nakahara
- Division of Skin Surface Sensing, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - R Kuroki
- Department of Dermatology, Fukuoka Tokushukai Hospital, Fukuoka, Japan
| | - T Koga
- Department of Dermatology, Fukuoka Higashi Medical Center, Fukuoka, Japan
| | - T Mashino
- Department of Dermatology, Hiroshima Red Cross Hospital and Atomic Bomb Survivors Hospital, Hiroshima, Japan
| | - Y Kurihara
- Department of Dermatology, Moji Hospital, Fukuoka, Japan
| | - M Furue
- Department of Dermatology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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Takahashi K, Kurihara Y, Takei K, Takeuchi H, Tanaka F. Lotus protein, an endogenous Nogo receptor antagonist, is involved in inflammation of experimental autoimmune encephalomyelitis. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3009] [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: 10/18/2022]
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Kurimoto M, Sekiguchi N, Kurihara Y, Ito K, Takezako N. Significance of Measurement of Serum Wilm’s Tumor 1 (WT1) Gene Level in Myelodysplastic Syndrome (MDS). Leuk Res 2017. [DOI: 10.1016/s0145-2126(17)30335-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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16
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Uemura R, Tachibana D, Kurihara Y, Pooh RK, Aoki Y, Koyama M. Prenatal findings of hypertrophic cardiomyopathy in a severe case of Costello syndrome. Ultrasound Obstet Gynecol 2016; 48:799-800. [PMID: 26916728 DOI: 10.1002/uog.15888] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 02/12/2016] [Accepted: 02/18/2016] [Indexed: 06/05/2023]
Affiliation(s)
- R Uemura
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - D Tachibana
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Y Kurihara
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - R K Pooh
- CRIFM Clinical Research Institute of Fetal Medicine PMC, Osaka, Japan
| | - Y Aoki
- Department of Medical Genetics, Tohoku University School of Medicine, Sendai, Japan
| | - M Koyama
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, Osaka, Japan
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Hamuro A, Tachibana D, Wang H, Hayashi M, Yanai S, Kurihara Y, Misugi T, Katayama H, Nakano A, Koyama M. Combined reconstructive surgery involving uterosacral colpopexy and anterior vaginal mesh implantation for pelvic organ prolapse. J Obstet Gynaecol Res 2016; 42:707-15. [DOI: 10.1111/jog.12952] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 11/14/2015] [Accepted: 12/22/2015] [Indexed: 12/21/2022]
Affiliation(s)
- A. Hamuro
- Division of Women's Life Care Medicine, Department of Obstetrics and Gynecology; Osaka City University Graduate School of Medicine; Osaka Japan
| | - D. Tachibana
- Division of Women's Life Care Medicine, Department of Obstetrics and Gynecology; Osaka City University Graduate School of Medicine; Osaka Japan
| | - H. Wang
- Division of Women's Life Care Medicine, Department of Obstetrics and Gynecology; Osaka City University Graduate School of Medicine; Osaka Japan
| | - M. Hayashi
- Division of Women's Life Care Medicine, Department of Obstetrics and Gynecology; Osaka City University Graduate School of Medicine; Osaka Japan
| | - S. Yanai
- Division of Women's Life Care Medicine, Department of Obstetrics and Gynecology; Osaka City University Graduate School of Medicine; Osaka Japan
| | - Y. Kurihara
- Division of Women's Life Care Medicine, Department of Obstetrics and Gynecology; Osaka City University Graduate School of Medicine; Osaka Japan
| | - T. Misugi
- Division of Women's Life Care Medicine, Department of Obstetrics and Gynecology; Osaka City University Graduate School of Medicine; Osaka Japan
| | - H. Katayama
- Division of Women's Life Care Medicine, Department of Obstetrics and Gynecology; Osaka City University Graduate School of Medicine; Osaka Japan
| | - A. Nakano
- Division of Women's Life Care Medicine, Department of Obstetrics and Gynecology; Osaka City University Graduate School of Medicine; Osaka Japan
| | - M. Koyama
- Division of Women's Life Care Medicine, Department of Obstetrics and Gynecology; Osaka City University Graduate School of Medicine; Osaka Japan
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18
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Tachibana D, Kurihara Y, Wada N, Kitada K, Nakagawa K, Koyama M. Flow velocity waveforms of the ductus venosus and atrioventricular valves in a case of fetal hemangiolymphangioma. Ultrasound Obstet Gynecol 2015; 46:744-745. [PMID: 25766974 DOI: 10.1002/uog.14848] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Revised: 03/01/2015] [Accepted: 03/10/2015] [Indexed: 06/04/2023]
Affiliation(s)
- D Tachibana
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi Abenoku, Osaka, Japan
| | - Y Kurihara
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi Abenoku, Osaka, Japan
| | - N Wada
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi Abenoku, Osaka, Japan
| | - K Kitada
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi Abenoku, Osaka, Japan
| | - K Nakagawa
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi Abenoku, Osaka, Japan
| | - M Koyama
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi Abenoku, Osaka, Japan
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Tanaka K, Hirayama K, Yonezawa H, Sato G, Toriyabe A, Kudo H, Hashimoto A, Matsumura M, Harada Y, Kurihara Y, Shirouzu T, Hosoya T. Revision of the Massarineae (Pleosporales, Dothideomycetes). Stud Mycol 2015; 82:75-136. [PMID: 26955201 PMCID: PMC4774272 DOI: 10.1016/j.simyco.2015.10.002] [Citation(s) in RCA: 133] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We here taxonomically revise the suborder Massarineae (Pleosporales, Dothideomycetes, Ascomycota). Sequences of SSU and LSU nrDNA and the translation elongation factor 1-alpha gene (tef1) are newly obtained from 106 Massarineae taxa that are phylogenetically analysed along with published sequences of 131 taxa in this suborder retrieved from GenBank. We recognise 12 families and five unknown lineages in the Massarineae. Among the nine families previously known, the monophyletic status of the Dictyosporiaceae, Didymosphaeriaceae, Latoruaceae, Macrodiplodiopsidaceae, Massarinaceae, Morosphaeriaceae, and Trematosphaeriaceae was strongly supported with bootstrap support values above 96 %, while the clades of the Bambusicolaceae and the Lentitheciaceae are moderately supported. Two new families, Parabambusicolaceae and Sulcatisporaceae, are proposed. The Parabambusicolaceae is erected to accommodate Aquastroma and Parabambusicola genera nova, as well as two unnamed Monodictys species. The Parabambusicolaceae is characterised by depressed globose to hemispherical ascomata with or without surrounding stromatic tissue, and multi-septate, clavate to fusiform, hyaline ascospores. The Sulcatisporaceae is established for Magnicamarosporium and Sulcatispora genera nova and Neobambusicola. The Sulcatisporaceae is characterised by subglobose ascomata with a short ostiolar neck, trabeculate pseudoparaphyses, clavate asci, broadly fusiform ascospores, and ellipsoid to subglobose conidia with or without striate ornamentation. The genus Periconia and its relatives are segregated from the Massarinaceae and placed in a resurrected family, the Periconiaceae. We have summarised the morphological and ecological features, and clarified the accepted members of each family. Ten new genera, 22 new species, and seven new combinations are described and illustrated. The complete ITS sequences of nrDNA are also provided for all new taxa for use as barcode markers.
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Affiliation(s)
- K. Tanaka
- Faculty of Agriculture and Life Science, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
| | - K. Hirayama
- Apple Experiment Station, Aomori Prefectural Agriculture and Forestry Research Center, 24 Fukutami, Botandaira, Kuroishi, Aomori 036-0332, Japan
| | - H. Yonezawa
- Faculty of Agriculture and Life Science, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
| | - G. Sato
- Faculty of Agriculture and Life Science, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
| | - A. Toriyabe
- Faculty of Agriculture and Life Science, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
| | - H. Kudo
- Faculty of Agriculture and Life Science, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
| | - A. Hashimoto
- Faculty of Agriculture and Life Science, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
- The United Graduate School of Agricultural Sciences, Iwate University, 18-8 Ueda 3 chome, Morioka 020-8550, Japan
| | - M. Matsumura
- Faculty of Agriculture and Life Science, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
| | - Y. Harada
- Faculty of Agriculture and Life Science, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
| | - Y. Kurihara
- OPBIO Factory, 5-8 Suzaki, Uruma, Okinawa 904-2234, Japan
| | - T. Shirouzu
- Department of Botany, National Museum of Nature and Science, 4-1-1 Amakubo, Tsukuba, Ibaraki 305-0005, Japan
| | - T. Hosoya
- Department of Botany, National Museum of Nature and Science, 4-1-1 Amakubo, Tsukuba, Ibaraki 305-0005, Japan
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Wada N, Tachibana D, Kurihara Y, Nakagawa K, Nakano A, Terada H, Tanaka K, Fukui M, Koyama M, Hecher K. Alterations in time intervals of ductus venosus and atrioventricular flow velocity waveforms in growth-restricted fetuses. Ultrasound Obstet Gynecol 2015; 46:221-226. [PMID: 25366537 DOI: 10.1002/uog.14717] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Revised: 10/14/2014] [Accepted: 10/22/2014] [Indexed: 06/04/2023]
Abstract
OBJECTIVE To investigate time intervals of the ductus venosus (DV) flow velocity waveform (FVW) and those of the cardiac cycle that correspond with each DV-FVW component in fetuses with intrauterine growth restriction (IUGR) due to placental insufficiency. METHODS Women with a pregnancy complicated by IUGR were recruited into the study, as was a normal control group. Time intervals for systolic (S) and diastolic (D) components were measured in DV-FVW as follows: S(DV), from the nadir of the a-wave during atrial contraction to the nadir between the S-wave and D-wave; D(DV), from the nadir between S-wave and D-wave to the nadir of the a-wave. Regarding cardiac cycles, the following variables were measured from ventricular inflow through the tricuspid valve (TV) and mitral valve (MV): S(TV) and S(MV), from the second peak of ventricular inflow caused by atrial contraction (A-wave) to the opening of the atrioventricular valve; D(TV) and D(MV), from the opening of the atrioventricular valve to the peak of the A-wave. In the IUGR group, only the last examination performed within 1 week of delivery was used for analysis. All variables were analyzed statistically using Z-scores. RESULTS Data were obtained from 249 normal fetuses and 26 fetuses with IUGR. Compared to normal fetuses, S(DV) showed a significant decrease (P < 0.001), while D(DV) showed a significant increase (P < 0.001) in the IUGR group. Regarding cardiac cycles, S(TV) and S(MV) showed significant decreases (P = 0.014 and P < 0.001, respectively) and D(TV) and D(MV) showed significant increases (P = 0.008 and P = 0.002, respectively) in fetuses with IUGR. CONCLUSION Time-interval alterations of DV-FVW in growth-restricted fetuses reflect the hemodynamic events caused by placental insufficiency.
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Affiliation(s)
- N Wada
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - D Tachibana
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Y Kurihara
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - K Nakagawa
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - A Nakano
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - H Terada
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - K Tanaka
- Department of Obstetrics and Gynecology, Osaka City General Hospital, Osaka, Japan
| | - M Fukui
- Laboratory of Statistics, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - M Koyama
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - K Hecher
- Department of Obstetrics and Fetal Medicine, University Medical Center, Hamburg-Eppendorf, Hamburg, Germany
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Tachibana D, Glosemeyer P, Diehl W, Nakagawa K, Wada N, Kurihara Y, Fukui M, Koyama M, Hecher K. Time-interval analysis of ductus venosus flow velocity waveforms in twin-to-twin transfusion syndrome treated with laser surgery. Ultrasound Obstet Gynecol 2015; 45:544-550. [PMID: 24975921 DOI: 10.1002/uog.13449] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Revised: 06/15/2014] [Accepted: 06/19/2014] [Indexed: 06/03/2023]
Abstract
OBJECTIVES To investigate time-interval variables of ductus venosus (DV) flow velocity waveforms (FVWs) in twin-to-twin transfusion syndrome (TTTS), comparing the results with reference ranges from normal singleton fetuses. The impact of laser surgery and the effect of prognostic factors were also evaluated. METHODS In 107 TTTS cases, DV-FVWs of both recipients and donors were recorded 1 day before and 2 days after laser therapy. Time intervals for systolic (S) and early diastolic (D) peaks were analyzed retrospectively with regard to acceleration time (acc-S and acc-D for S and D, respectively) and deceleration time (dec-S and dec-D for S and D, respectively). For each variable, Z-scores were calculated with respect to previously reported normal reference ranges. RESULTS Z-scores for all variables showed statistically significant differences from those observed previously in normal fetuses, with the exception of dec-S of donors. The most striking differences were observed in longer dec-S of recipients (P < 0.001) and longer dec-D of donors (P < 0.001). Laser therapy showed significant impact on dec-S and acc-D in recipients and on all variables in donors. Regarding the short-term prognosis, acc-S and dec-S showed significant differences for the prediction of intrauterine fetal demise in donors (P = 0.009 and P = 0.011, respectively). CONCLUSION This study demonstrates that time-interval variables of DV-FVWs may differentiate the characteristic hemodynamic changes caused by unbalanced blood volume between recipients and donors.
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Affiliation(s)
- D Tachibana
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, Osaka, Japan; Department of Obstetrics and Fetal Medicine, University Medical Center, Hamburg-Eppendorf, Hamburg, Germany
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Sekiguchi T, Sasaki H, Kurihara Y, Watanabe S, Moriyama D, Kurose N, Matsuki R, Yamazaki K, Saeki M. New methods for species and sex determination in three sympatric Mustelids, Mustela itatsi, Mustela sibirica and Martes melampus. Mol Ecol Resour 2013; 10:1089-91. [PMID: 21565122 DOI: 10.1111/j.1755-0998.2010.02842.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We developed novel species and sex determination methods for three Japanese mustelid species. We used DDX3Y to determine sex and generated a primer set to amplify both DDX3X and DDX3Y DNA in Mustela itatsi, M. sibirica and Martes melampus. To determine species and sex simultaneously, we generated fluorescence-labelled primers that give different fragment lengths at D-loop, DDX3X and DDX3Y of these three species using a DNA sequencer.
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Affiliation(s)
- T Sekiguchi
- Department of Molecular Biology, Graduate School of Medical Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
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Takakuwa Y, Yamada H, Ito H, Ooka S, Yamasaki Y, Nakano H, Hiida M, Kurihara Y, Ozaki S. THU0410 Characterisation of interstitial lung disease associated with adult still’s disease. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.2375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Maeda A, Yamada H, Yamasaki Y, Shibata T, Nagafuchi H, Kurihara Y, Ozaki S. THU0200 Clinical and radiological characteristics of interstitial lung disease in japanese patients with microscopic polyangiitis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.2165] [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: 11/03/2022]
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Chiba T, Takeuchi S, Esaki H, Yamamura K, Kurihara Y, Moroi Y, Furue M. Topical application of PPARα (but not β/δ or γ) suppresses atopic dermatitis in NC/Nga mice. Allergy 2012; 67:936-42. [PMID: 22583373 DOI: 10.1111/j.1398-9995.2012.02844.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/05/2012] [Indexed: 11/26/2022]
Abstract
BACKGROUND Peroxisome proliferator-activated receptors (PPARs) are nuclear receptors, which regulate not only adipogenesis and proliferation/differentiation but also the immune response of cells. Because topical application of the activators of some PPAR isoforms improved clinical symptoms in patients with atopic dermatitis (AD), we investigated the role of PPAR activators using a murine AD model in NC/Nga mice; to the best of our knowledge, this has not been previously reported. METHODS Activators of three PPAR isoforms (α, β/δ, γ) were topically applied on inflamed skin in a murine AD model that was developed by repeated topical application of mite antigen in NC/Nga mice. The efficacy of each topical PPAR activator was evaluated immunologically and serologically. RESULTS Topical application of the PPARα activator, but not of the activators of PPARβ/δ or PPARγ, improved clinical dermatitis, reduced inflammatory cell infiltration in the dermis, and alleviated the elevation of serum IgE levels. In addition, PPARα expression was downregulated in the epidermis in our murine AD model, as is seen in patients with AD. CONCLUSIONS Topical application of PPARα activator could be a potent therapeutic agent for patients with AD and could take the place of topical steroid treatments.
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Affiliation(s)
- T. Chiba
- Department of Dermatology, School of Medicine; Kyushu University; Fukuoka; Japan
| | - S. Takeuchi
- Department of Dermatology, School of Medicine; Kyushu University; Fukuoka; Japan
| | - H. Esaki
- Department of Dermatology, School of Medicine; Kyushu University; Fukuoka; Japan
| | - K. Yamamura
- Department of Dermatology, School of Medicine; Kyushu University; Fukuoka; Japan
| | - Y. Kurihara
- Department of Dermatology, School of Medicine; Kyushu University; Fukuoka; Japan
| | - Y. Moroi
- Department of Dermatology, School of Medicine; Kyushu University; Fukuoka; Japan
| | - M. Furue
- Department of Dermatology, School of Medicine; Kyushu University; Fukuoka; Japan
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Soga D, Yoshiba S, Kurihara Y, Yoshizawa Y, Kondo S, Shintani S. Exhaustive analysis of microRNA in oral squamous cell carcinoma. Int J Oral Maxillofac Surg 2011. [DOI: 10.1016/j.ijom.2011.07.419] [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: 11/30/2022]
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Kondo S, Yazawa K, Li C, Katsuta H, Kurihara Y, Yoshihama Y, Shirota T, Shintani S. Herbal product, h201 and h207 is a potential anticancer agent in oral squamous cell carcinoma cell lines. Int J Oral Maxillofac Surg 2011. [DOI: 10.1016/j.ijom.2011.07.636] [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: 10/16/2022]
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Kurihara Y, Watanabe K, Nakamura T, Tanaka H. Unconstrained Estimation Method of Delta-Wave Percentage Included in EEG of Sleeping Subjects. IEEE Trans Biomed Eng 2011; 58:607-15. [DOI: 10.1109/tbme.2010.2096559] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Ishimine N, Usami Y, Nogi S, Sumida T, Kurihara Y, Matsuda K, Nakamura K, Yamauchi K, Okumura N, Tozuka M. Identification of N-homocysteinylated apolipoprotein AI in normal human serum. Ann Clin Biochem 2010; 47:453-9. [DOI: 10.1258/acb.2010.010035] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Background In human serum, a portion of homocysteine (Hcy) exists as an N-linked form to the ε-amino group of protein lysine residues. N-homocysteinylated proteins differ structurally and functionally from native proteins. The present study strives to develop detection and potential semi-quantification methods for N-homocysteinylated apolipoprotein AI ( N-Hcy-apoAI) in human serum. Methods Serum treated with or without cysteamine was supplied to isoelectric focusing (IEF) followed by an immunoblot using an anti-apoAI antibody. Cysteamine treatment increased the isoelectric point for N-Hcy-apoAI, but not for unmodified apoAI, due to the presence of -SH group(s) derived from Hcy and the absence of a cysteine residue in the apoAI molecule. N-Hcy-apoAI was semi-quantified from the scanned immunoblot pattern via a computer. Results After cysteamine treatment, N-Hcy-apoAI in the serum was identified by IEF at the position with a higher pI value compared with intact apoAI. The reproducibility (between assays) of the semi-quantification method was 19.1% CV (coefficient of variation) for an average ratio 5.9% of N-Hcy-apoAI to the whole apoAI in the serum. Approximately 1.0–7.4% of apoAI was N-homocysteinylated in the serum obtained from 27 healthy subjects. Neither the ratio of N-Hcy-apoAI nor its concentration, calculated by total apoAI concentration, indicated correlation with the so-called total (free and S-linked) Hcy concentration. Conclusions We directly found that a portion of apoAI in the serum undergoes homocysteinylation in an N-linkage manner, and used this to develop a potential semi-quantification method for N-Hcy-apoAI.
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Affiliation(s)
- N Ishimine
- Analytical Laboratory Chemistry, Graduate School of Health Care Sciences, Tokyo Medical and Dental University, Tokyo
- Department of Laboratory Medicine, Shinshu University Hospital, Matsumoto
| | - Y Usami
- Analytical Laboratory Chemistry, Graduate School of Health Care Sciences, Tokyo Medical and Dental University, Tokyo
| | - S Nogi
- Analytical Laboratory Chemistry, Graduate School of Health Care Sciences, Tokyo Medical and Dental University, Tokyo
| | - T Sumida
- Analytical Laboratory Chemistry, Graduate School of Health Care Sciences, Tokyo Medical and Dental University, Tokyo
| | - Y Kurihara
- Analytical Laboratory Chemistry, Graduate School of Health Care Sciences, Tokyo Medical and Dental University, Tokyo
| | - K Matsuda
- Department of Laboratory Medicine, Shinshu University Hospital, Matsumoto
| | - K Nakamura
- Department of Clinical Laboratory, The University of Tokyo Hospital, Tokyo
| | - K Yamauchi
- Clinical Pathology, Graduate School of Comprehensive Human Sciences, Tsukuba University, Tsukuba
| | - N Okumura
- Department of Biomedical Laboratory Sciences, School of Health Sciences, Shinshu University, Matsumoto, Japan
| | - M Tozuka
- Analytical Laboratory Chemistry, Graduate School of Health Care Sciences, Tokyo Medical and Dental University, Tokyo
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Yoshioka N, Kurihara Y, Manda N, Komori K, Kato M, Kijima H, Wada N, Yanagisawa K, Aoki S, Ono Y, Koike T. Step-up therapy with biphasic insulin aspart-70/30--Sapporo 1-2-3 study. Diabetes Res Clin Pract 2009; 85:47-52. [PMID: 19427051 DOI: 10.1016/j.diabres.2009.04.012] [Citation(s) in RCA: 17] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2008] [Revised: 04/07/2009] [Accepted: 04/09/2009] [Indexed: 11/21/2022]
Abstract
The effectiveness of BIAsp 30 step-up therapy in achieving glycemic control in Japanese patients with type 2 diabetes mellitus was investigated. Study subjects were 99 patients with type 2 diabetes mellitus aged over 20 years who were judged to require insulin therapy due to poor glucose control (HbA1c level of > or =7.5%). BIAsp 30 dosage was determined by the patient's attending physician; coadministration of hypotensive agents and antilipemic agents was permitted, but OAD coadministration was limited to patients already receiving such drugs at the start of the study. Patients who did not achieve HbA1c <6.5% after 16+/-5 weeks with QD (Phase 1) were stepped up to BID (Phase 2). If patients still had not achieved HbA1c <6.5% after 16+/-5 weeks with BID, they were stepped up to TID (Phase 3). 55 of the 99 enrolled subjects completed the study and the rates of achievement of HbA1c <6.5% and HbA1c <7.0% were 45.5% and 74.5%, respectively. Of all registered subjects, 5.1% (5/99) achieved HbA1c <6.5% in QD, 19.5% (16/82) in BID, and 20.6% (7/34) in TID. Statistically significant reductions in HbA1c levels were recorded at the conclusion of each phase, with no incidents requiring intervention, indicating that BIAsp 30 step-up therapy is a safe, simple therapy that can be useful in achieving better glycemic control for Japanese patients with type 2 diabetes mellitus.
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Affiliation(s)
- N Yoshioka
- Department of Medicine II, Hokkaido University Graduate School of Medicine, Kita 15 jyo, Nishi 7 cho-me, Kita-ku, Sapporo, Hokkaido, 060-8638, Japan.
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Sato H, Hatori M, Kurihara Y, Shirota T, Shintani S. S-1 mediates the inhibition of lymph node metastasis in oral cancer cells. Int J Oral Maxillofac Surg 2009. [DOI: 10.1016/j.ijom.2009.03.114] [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: 10/20/2022]
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Kurihara Y, Shime N, Miyazaki T, Hashimoto S, Tanaka Y. Clinical and hemodynamic factors associated with the outcome of early extubation attempts after right heart bypass surgery. Interact Cardiovasc Thorac Surg 2009; 8:624-8. [DOI: 10.1510/icvts.2008.189431] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Shintani S, Hatori M, Toyoshima T, Kurihara Y, Kurokawa Y, Nakahira H, Ito T, Shirota T. O.161 Saliva tumor markers for the identiflcation of oral cancer. J Craniomaxillofac Surg 2008. [DOI: 10.1016/s1010-5182(08)71285-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Zhang Z, Hill J, Holland M, Kurihara Y, Loveland KL. Bovine Sertoli Cells Colonize and Form Tubules in Murine Hosts Following Transplantation and Grafting Procedures. ACTA ACUST UNITED AC 2008; 29:418-30. [DOI: 10.2164/jandrol.107.004465] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Ebisuzaki T, Uehara Y, Ohmori H, Kawai K, Kawasaki Y, Sato M, Takizawa Y, Bertaina M, Kajino F, Sawabe T, Inoue K, Sasaki A, Sakata M, Yamamoto Y, Nagano M, Inoue N, Shibata T, Sakaki N, Uchihori Y, Takahashi Y, Shimizu H, Arai Y, Kurihara Y, Fujimoto H, Yoshida S, Mizumoto Y, Inoue S, Asano K, Sugiyama T, Watanabe J, Ikeda H, Suzuki M, Imamura T, Yano H, Murakami T, Yonetoku D, Itow Y, Taguchi M, Nagata M, Nagataki S, Abe S, Tajima T, Adams J, Mitchell S, Christl M, Watts J, English A, Takahashi Y, Pitalo K, Hadaway J, Geary J, Readon P, Crawford H, Pennypacker C, Arisaka K, Cline D, Gorodetsky P, Salin P, Patzark T, Maurissen A, Valentin M. The JEM-EUSO Project: Observing Extremely High Energy Cosmic Rays and Neutrinos from the International Space Station. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.nuclphysbps.2007.11.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Abstract
The growth of coprophagy-prevented rats was compared under administration of normal levels of vitamin B12 and supplemented amounts. Two experiments in which supplemented amounts of vitamin B12 were administered were conducted under different conditions. Six rats per group were fed under coprophagy-allowed (conventional feeding) and coprophagy-prevented conditions respectively. In the first experiment, coprophagy-prevented rats were fed only feed containing recommended vitamin B12 level and forced fed hydrous faeces, vitamin B12 and folic acid respectively. In the second experiment, coprophagy-prevented rats were fed AIN-93G at the recommended vitamin B12 level (25 microg/kg diet), at 100 times the level and at 1000 times the level respectively. Body weight, feed consumption and amounts of each faeces type were determined in both experiments. In a comparison of body weight gain, we learned that coprophagy prevention reduced the values, but that there was no significant difference in the forced feeding group in the first experiment. Similar results were recognized in the second experiment. Vitamin B12 supplementation was not able to raise feed intake significantly and hence it obviously was not a severely limiting factor under the respective experimental condition which depressed feed intake.
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Affiliation(s)
- S Sukemori
- Department of Animal Science, Faculty of Agriculture, Tokyo University of Agriculture, Tokyo, Japan.
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Yamasaki Y, Yamada H, Yamasaki M, Ohkubo M, Azuma K, Matsuoka S, Kurihara Y, Osada H, Satoh M, Ozaki S. Intravenous cyclophosphamide therapy for progressive interstitial pneumonia in patients with polymyositis/dermatomyositis. Rheumatology (Oxford) 2006; 46:124-30. [PMID: 16754626 DOI: 10.1093/rheumatology/kel112] [Citation(s) in RCA: 150] [Impact Index Per Article: 8.3] [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: 11/12/2022] Open
Abstract
OBJECTIVES To study the efficacy and safety of monthly intravenous pulse cyclophosphamide (IVCYC) therapy for progressive interstitial pneumonia in polymyositis/dermatomyositis (PM/DM). METHODS Seventeen patients with PM/DM/amyopathic DM (mean age 51.4 +/- 10.4, mean follow-up 32 months) who received IVCYC for progressive interstitial pneumonia between August 1993 and October 2002 were studied. Nine patients had failed to respond to previous treatment with high-dose steroid and/or immunosuppressant. Cyclophosphamide (300-800 mg/m2) was given at least six times every 4 weeks. Oral prednisolone (0.5-1 mg/kg/day) was administered for the first 2 weeks and was gradually tapered. Response to treatment was evaluated based on the degree of exertional dyspnea, pulmonary function test and high-resolution computed tomography (HRCT). RESULTS Eleven of 17 patients showed improvement in their dyspnea; six out of seven patients who had required oxygen treatment before IVCYC no longer did so after IVCYC. Eight of 17 patients had >or=10% improvement of vital capacity (VC)% and 9/17 had >or=10 point reduction in their HRCT score. Twelve patients had exhibited at least one result. Two patients with anti-Jo-1 antibodies showed a flare-up of interstitial pneumonia or myositis. After the IVCYC therapy, mean VC% improved by 15% (from 68 to 83%, P = 0.0034). The extent of abnormal lesions in HRCT was reduced from 24 to 13% (P = 0.0055). There was neither death nor severe toxicities observed. CONCLUSIONS In this open-label study, IVCYC improved symptoms, pulmonary function tests and HRCT findings in patients with PM/DM. Longitudinal controlled studies are required to further confirm the efficacy of IVCYC.
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Affiliation(s)
- Y Yamasaki
- Division of Rheumatology and Allergy, Department of Medicine, St Marianna University School of Medicine, 2-16-1 Sugao, Miyamae, Kawasaki, Kanagawa 216-8511, Japan.
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Omori T, Fukuda M, Hirose T, Kurihara Y, Kuroda R, Nomura M, Ohashi A, Okugi T, Sakaue K, Saito T, Urakawa J, Washio M, Yamazaki I. Efficient propagation of polarization from laser photons to positrons through compton scattering and electron-positron pair creation. Phys Rev Lett 2006; 96:114801. [PMID: 16605830 DOI: 10.1103/physrevlett.96.114801] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2005] [Indexed: 05/08/2023]
Abstract
We have demonstrated for the first time the production of highly polarized short-pulse positrons with a finite energy spread in accordance with a new scheme that consists of two-quantum processes, such as inverse Compton scattering and electron-positron pair creation. Using a circularly polarized laser beam of 532 nm scattered off a high-quality, 1.28 GeV electron beam, we have obtained polarized positrons with an intensity of 2 x 10(4) e+ /bunch. The magnitude of positron polarization has been determined to be 73 +/- 15(stat) +/- 19(syst)% by means of a newly designed positron polarimeter.
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Affiliation(s)
- T Omori
- KEK: High Energy Accelerator Research Organization, Tsukuba-shi, Ibaraki 305-0801, Japan
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Boudjema F, Fujimoto J, Ishikawa T, Kaneko T, Kato K, Kurihara Y, Shimizu Y. Multi-leg calculations with the GRACE/1-LOOP system — Toward Radiative Corrections to —. ACTA ACUST UNITED AC 2004. [DOI: 10.1016/j.nuclphysbps.2004.09.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Qayumi AK, Kurihara Y, Imai M, Pachev G, Seo H, Hoshino Y, Cheifetz R, Matsuura K, Momoi M, Saleem M, Lara-Guerra H, Miki Y, Kariya Y. Comparison of computer-assisted instruction (CAI) versus traditional textbook methods for training in abdominal examination (Japanese experience). Med Educ 2004; 38:1080-1088. [PMID: 15461653 DOI: 10.1111/j.1365-2929.2004.01957.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
PURPOSE This study aimed to compare the effects of computer-assisted, text-based and computer-and-text learning conditions on the performances of 3 groups of medical students in the pre-clinical years of their programme, taking into account their academic achievement to date. A fourth group of students served as a control (no-study) group. METHOD Participants were recruited from the pre-clinical years of the training programmes in 2 medical schools in Japan, Jichi Medical School near Tokyo and Kochi Medical School near Osaka. Participants were randomly assigned to 4 learning conditions and tested before and after the study on their knowledge of and skill in performing an abdominal examination, in a multiple-choice test and an objective structured clinical examination (OSCE), respectively. Information about performance in the programme was collected from school records and students were classified as average, good or excellent. Student and faculty evaluations of their experience in the study were explored by means of a short evaluation survey. RESULTS Compared to the control group, all 3 study groups exhibited significant gains in performance on knowledge and performance measures. For the knowledge measure, the gains of the computer-assisted and computer-assisted plus text-based learning groups were significantly greater than the gains of the text-based learning group. The performances of the 3 groups did not differ on the OSCE measure. Analyses of gains by performance level revealed that high achieving students' learning was independent of study method. Lower achieving students performed better after using computer-based learning methods. CONCLUSION The results suggest that computer-assisted learning methods will be of greater help to students who do not find the traditional methods effective. Explorations of the factors behind this are a matter for future research.
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Affiliation(s)
- A K Qayumi
- Faculty of Medicine, University of British Columbia, Vancouver, British Columbia V5Z 4E3, Canada.
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45
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Fukuda M, Aoki T, Dobashi K, Hirose T, Iimura T, Kurihara Y, Okugi T, Omori T, Sakai I, Urakawa J, Washio M. Polarimetry of short-pulse gamma rays produced through inverse Compton scattering of circularly polarized laser beams. Phys Rev Lett 2003; 91:164801. [PMID: 14611407 DOI: 10.1103/physrevlett.91.164801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2003] [Indexed: 05/24/2023]
Abstract
We have developed a polarimetry of ultrashort pulse gamma rays based on the fact that gamma rays penetrating in the forward direction through a magnetized iron carry information on the helicity of the original gamma rays. Polarized, short-pulse gamma rays of (1.1+/-0.2)x10(6)/bunch with a time duration of 31 ps and a maximum energy of 55.9 MeV were produced via Compton scattering of a circularly polarized laser beam of 532 nm off an electron beam of 1.28 GeV. The first demonstration of asymmetry measurements of short-pulse gamma rays was conducted using longitudinally magnetized iron of 15 cm length. It is found that the gamma-ray intensity is in good agreement with the simulated value of 1.0x10(6). Varying the degree of laser polarization, the asymmetry for 100% laser polarization was derived to be (1.29+/-0.12)%, which is also consistent with the expected value of 1.3%.
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Affiliation(s)
- M Fukuda
- Department of Physics, Tokyo Metropolitan University, Minami-Osawa, Hachioji-shi Tokyo 192-0397, Japan
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Tanaka Y, Hori T, Tagaya M, Katahira M, Nishikawa F, Sakamoto T, Kurihara Y, Nishikawa S, Uesugi S. NMR analysis of tertiary interactions in HDV ribozymes. Nucleic Acids Symp Ser 2003:285-6. [PMID: 12903380 DOI: 10.1093/nass/44.1.285] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Three variants of minimized hepatitis delta virus (HDV) RNA ribozyme systems designed on the basis of the "pseudoknot" model were synthesized and their tertiary interactions were analyzed by NMR spectroscopy. Rz-1 is a cis-acting ribozyme system (the cleaved form, 56-mer) in which stem IV is deleted from the active domain of genomic HDV RNA. Rz-1 was uniformly labeled with stable isotopes, 13C and 15N. Rz-2 is a trans-acting ribozyme system (substrate: 8-mer, the cytidine residue at the cleavage site is replaced by 2'-O-methylcytidine; enzyme: 16-mer plus 35-mer). Rz-2 was partially labeled with stable isotopes in guanosine residues of enzyme 35mer. Rz-4 is a trans-acting ribozyme system (substrate: 8mer, the cytidine residue at the cleavage site is replaced by 2'-O-methylcytidine; enzyme 53mer) which was designed by Perrotta and Been. Rz-4 has the same sequence and an extra loop closing stem IV. From 2D-NOESY and 2D-HSQC (except for Rz-4) spectra, it was suggested each ribozyme forms "pseudoknot" type structure in solution. Additionally, it was found that G38 of Rz-1, G28 and G29 of Rz-2 and Rz-4 form base-pairs. These novel base-pairs are observed in the crystal structure of a modified genomic HDV RNA. From temperature change experiment of Rz-2, the imino proton signal of G28 disappeared at 50 degrees C earlier than the other corresponding signals. Upon MgCl2 titration of Rz-2, this signal showed the largest shift.
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Affiliation(s)
- Y Tanaka
- Department of Chemistry and Biotechnology, Faculty of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
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Sukemori S, Ikeda S, Kurihara Y, Ito S. Amino acid, mineral and vitamin levels in hydrous faeces obtained from coprophagy-prevented rats. J Anim Physiol Anim Nutr (Berl) 2003; 87:213-20. [PMID: 12752827 DOI: 10.1046/j.1439-0396.2003.00415.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Amino acid, mineral and vitamin levels in hydrous faeces obtained from coprophagy-prevented rats were examined. Two experiments were conducted with rats of different age, 4 weeks and 10 weeks. Six rats each were fed under coprophagy-prevented and coprophagy-allowed (conventional feeding) conditions, respectively. In the first experiment using 4-week-old rats, amino acid values were determined for hydrous faeces and usual faeces obtained in the above-mentioned conditions. In the second experiment using 10-week-old rats, mineral values were determined for both types of faeces. Vitamin values were determined in both experiments. In a comparison of amino acid values and their patterns, specific kinds of amino acids in hydrous faeces were not recognized as growth factors. Sodium and potassium levels in hydrous faeces were significantly higher than those for usual faeces, but those levels were 1/(18-20) of those derived from feed. Although cyanocobalamin and folic acid levels in hydrous faeces were two to three times higher than those for usual faeces, folic acid supplements from coprophagy were 1/8 of those derived from feed. Cyanocobalamin supplements from hydrous faeces were five times larger than those from feed. Therefore, it appears that cyanocobalamin was supplied by the ingestion of hydrous faeces and that this cyanocobalamin supports conventional growth in rats.
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Affiliation(s)
- S Sukemori
- Department of Zootechnical Science, Faculty of Agriculture, Tokyo University of Agriculture, Tokyo, Japan.
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Kubo K, Akemoto M, Anderson S, Aoki T, Araki S, Bane KLF, Blum P, Corlett J, Dobashi K, Emma P, Frisch J, Fukuda M, Guo Z, Hasegawa K, Hayano H, Higo T, Higurashi A, Honda Y, Iimura T, Imai T, Jobe K, Kamada S, Karataev P, Kashiwagi S, Kim E, Kobuki T, Kotseroglou T, Kurihara Y, Kuriki M, Kuroda R, Kuroda S, Lee T, Luo X, McCormick DJ, McKee B, Mimashi T, Minty M, Muto T, Naito T, Naumenko G, Nelson J, Nguyen MN, Oide K, Okugi T, Omori T, Oshima T, Pei G, Potylitsyn A, Qin Q, Raubenheimer T, Ross M, Sakai H, Sakai I, Schmidt F, Slaton T, Smith H, Smith S, Smith T, Suzuki T, Takano M, Takeda S, Terunuma N, Toge N, Turner J, Urakawa J, Vogel V, Woodley M, Yocky J, Young A, Zimmermann F. Extremely low vertical-emittance beam in the accelerator test facility at KEK. Phys Rev Lett 2002; 88:194801. [PMID: 12005637 DOI: 10.1103/physrevlett.88.194801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2001] [Indexed: 05/23/2023]
Abstract
Electron beams with the lowest, normalized transverse emittance recorded so far were produced and confirmed in single-bunch-mode operation of the Accelerator Test Facility at KEK. We established a tuning method of the damping ring which achieves a small vertical dispersion and small x-y orbit coupling. The vertical emittance was less than 1% of the horizontal emittance. At the zero-intensity limit, the vertical normalized emittance was less than 2.8 x 10(-8) rad m at beam energy 1.3 GeV. At high intensity, strong effects of intrabeam scattering were observed, which had been expected in view of the extremely high particle density due to the small transverse emittance.
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Affiliation(s)
- K Kubo
- High Energy Accelerator Research Organization, Tsukuba 305-0801, Japan
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Kurihara Y, Yoshida S, Geshi H, Kubo Y, Kitazoe Y. Economic analysis of a filmless system based on the hospital information system. Stud Health Technol Inform 2002; 84:1166-70. [PMID: 11604913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
A filmless system (FLS) based on a picture archiving and communication system (PACS) equipped with UNIX work- stations and a local area network (LAN) specialized for viewing radiographs has not been deemed acceptable, for reasons of economics. However, personal computers (PCs) have recently become more powerful, to the point where PCs approach UNIX workstations in terms of capabilities. As a result, a PC-based image viewing workstation (IVW) has sufficient functions for practical use. Diagnostic resolution is not equal to that of film, but is comparable. Since the hospital information system (HIS) includes many PC terminals connected by a LAN, the cost problem can be resolved by using these PC terminals as the IVWs. In order to investigate the practicability of this idea, two types of FLSs using HIS facilities were designed: one is a system based on the use of high-resolution cathode ray tubes (H-CRTs), and the other is based on the use of conventional CRTs and radiologist reports, minimizing the number of H-CRTs. The total costs of the two systems were analyzed. As a result, the former FLS was found to be about 15% more expensive than the latter, which was less expensive than a film-based system (FBS). However, whether the FLS is more profitable than the FBS from the viewpoint of hospital management strongly depends on the medical insurance system.
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Affiliation(s)
- Y Kurihara
- Information Science, Kochi Medical School, Nankoku 783-8505, Japan.
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Shindo T, Kurihara H, Maemura K, Kurihara Y, Ueda O, Suzuki H, Kuwaki T, Ju KH, Wang Y, Ebihara A, Nishimatsu H, Moriyama N, Fukuda M, Akimoto Y, Hirano H, Morita H, Kumada M, Yazaki Y, Nagai R, Kimura K. Renal damage and salt-dependent hypertension in aged transgenic mice overexpressing endothelin-1. J Mol Med (Berl) 2002; 80:105-16. [PMID: 11907647 DOI: 10.1007/s00109-001-0284-4] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2001] [Accepted: 08/28/2001] [Indexed: 10/27/2022]
Abstract
The recent development of endothelin-1 (ET-1) antagonists and their potential use in the treatment of human disease raises questions as to the role of ET-1 in the pathophysiology of such cardiovascular ailments as hypertension, heart failure, renal failure and atherosclerosis. It is still unclear, for example, whether activation of an endogenous ET-1 system is itself the primary cause of any of these ailments. In that context, the phenotypic manifestations of chronic ET-1 overproduction may provide clues about the tissues and systems affected by ET-1. We therefore established two lines of transgenic mice overexpressing the ET-1 gene under the direction of its own promoter. These mice exhibited low body weight, diminished fur density and two- to fourfold increases in the ET-1 levels measured in plasma, heart, kidney and aorta. There were no apparent histological abnormalities in the visceral organs of young (8 weeks old) transgenic mice, nor was their blood pressure elevated. In aged (12 months old) transgenic mice, however, renal manifestations, including prominent interstitial fibrosis, renal cysts, glomerulosclerosis and narrowing of arterioles, were detected. These pathological changes were accompanied by decreased creatinine clearance, elevated urinary protein excretion and salt-dependent hypertension. It thus appears that mild, chronic overproduction of ET-1 does not primarily cause hypertension but triggers damaging changes in the kidney which lead to the susceptibility to salt-induced hypertension.
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Affiliation(s)
- T Shindo
- Department of Cardiovascular Medicine, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
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