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Yoshida K, Tanabe Y, Hosokawa T, Morikawa T, Fukuyama N, Kobayashi Y, Kouchi T, Kawaguchi N, Matsuda M, Kido T, Kido T. Coronary computed tomography angiography for clinical practice. Jpn J Radiol 2024:10.1007/s11604-024-01543-1. [PMID: 38453814 DOI: 10.1007/s11604-024-01543-1] [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: 07/14/2023] [Accepted: 01/28/2024] [Indexed: 03/09/2024]
Abstract
Coronary artery disease (CAD) is a common condition caused by the accumulation of atherosclerotic plaques. It can be classified into stable CAD or acute coronary syndrome. Coronary computed tomography angiography (CCTA) has a high negative predictive value and is used as the first examination for diagnosing stable CAD, particularly in patients at intermediate-to-high risk. CCTA is also adopted for diagnosing acute coronary syndrome, particularly in patients at low-to-intermediate risk. Myocardial ischemia does not always co-exist with coronary artery stenosis, and the positive predictive value of CCTA for myocardial ischemia is limited. However, CCTA has overcome this limitation with recent technological advancements such as CT perfusion and CT-fractional flow reserve. In addition, CCTA can be used to assess coronary artery plaques. Thus, the indications for CCTA have expanded, leading to an increased demand for radiologists. The CAD reporting and data system (CAD-RADS) 2.0 was recently proposed for standardizing CCTA reporting. This RADS evaluates and categorizes patients based on coronary artery stenosis and the overall amount of coronary artery plaque and links this to patient management. In this review, we aimed to review the major trials and guidelines for CCTA to understand its clinical role. Furthermore, we aimed to introduce the CAD-RADS 2.0 including the assessment of coronary artery stenosis, plaque, and other key findings, and highlight the steps for CCTA reporting. Finally, we aimed to present recent research trends including the perivascular fat attenuation index, artificial intelligence, and the advancements in CT technology.
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Affiliation(s)
- Kazuki Yoshida
- Department of Radiology, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, 791-0295, Japan
| | - Yuki Tanabe
- Department of Radiology, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, 791-0295, Japan.
| | - Takaaki Hosokawa
- Department of Radiology, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, 791-0295, Japan
| | - Tomoro Morikawa
- Department of Radiology, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, 791-0295, Japan
| | - Naoki Fukuyama
- Department of Radiology, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, 791-0295, Japan
| | - Yusuke Kobayashi
- Department of Radiology, Matsuyama Red Cross Hospital, Bunkyocho, Matsuyama, Ehime, Japan
| | - Takanori Kouchi
- Department of Radiology, Juzen General Hospital, Kitashinmachi, Niihama, Ehime, Japan
| | - Naoto Kawaguchi
- Department of Radiology, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, 791-0295, Japan
| | - Megumi Matsuda
- Department of Radiology, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, 791-0295, Japan
| | - Tomoyuki Kido
- Department of Radiology, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, 791-0295, Japan
| | - Teruhito Kido
- Department of Radiology, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, 791-0295, Japan
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Etani T, Morikawa T, Gonda M, Aoki M, Nagai T, Iida K, Taguchi K, Naiki T, Hamamoto S, Okada A, Kawai N, Yasui T. Usefulness of stone culture in endoscopic combined intra-renal surgery. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00781-9] [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: 02/12/2023]
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Morikawa T, Shibahara T, Takano M. Combination of fluorescence visualization and iodine solution-guided surgery for local control of early tongue cancer. Int J Oral Maxillofac Surg 2023; 52:161-167. [PMID: 35729035 DOI: 10.1016/j.ijom.2022.06.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 04/21/2022] [Accepted: 06/06/2022] [Indexed: 01/11/2023]
Abstract
The control of enclosed oral epithelial dysplasia is important for the control of oral cancer. Fluorescence visualization and iodine solution are able to detect oral epithelial dysplasia and surrounding oral cancer. The purpose of this study was to clarify the effectiveness of combining fluorescence visualization and iodine solution-guided surgery for early tongue cancer. Participants comprised 264 patients with primary early tongue cancer who underwent surgery. The surgical margin was set at 10 mm outside the clinical tumour, and 5 mm outside the area of fluorescence visualization loss, and 5mm outside the iodine unstained area. The 5-year disease-free survival rate was 87.1% vs 76.1% (P = 0.016) and the 5-year local control rate was 98.6% vs 93.0% (P = 0.008) for combination-guided surgery when compared to conventional surgery. Positive margin rates were 0% for cancer, and 6.5% and 0% for low- and high-grade dysplasia, respectively, with combination-guided surgery (P = 0.257). Multivariate analysis revealed that combination-guided surgery (odds ratio 0.140, 95% confidence interval 0.045-0.437; P < 0.001) and intraoperative frozen section examination (odds ratio 0.302; 95% confidence interval 0.115-0.791; P = 0.015) were significantly associated with local control. The combination of fluorescence visualization and iodine solution are effective in selecting surgical margins for early tongue cancer.
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Affiliation(s)
- T Morikawa
- Department of Oral and Maxillofacial Surgery, Tokyo Dental College, Tokyo, Japan.
| | - T Shibahara
- Department of Oral and Maxillofacial Surgery, Tokyo Dental College, Tokyo, Japan
| | - M Takano
- Department of Oral and Maxillofacial Surgery, Tokyo Dental College, Tokyo, Japan
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Morikawa T. Reply to the Letter concerning "Combination of fluorescence visualization and iodine solution-guided surgery for local control of early tongue cancer". Int J Oral Maxillofac Surg 2022; 52:723. [PMID: 36117008 DOI: 10.1016/j.ijom.2022.08.022] [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] [Received: 08/03/2022] [Accepted: 08/17/2022] [Indexed: 10/14/2022]
Affiliation(s)
- T Morikawa
- Department of Oral and Maxillofacial Surgery, Tokyo Dental College, Tokyo, Japan.
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Tanabe Y, Kido T, Kurata A, Uetani T, Kuwahara N, Morikawa T, Kawaguchi N, Kido T, Nishimura K, Ikeda S, Yamaguchi O, Mochizuki T. Combined assessment of subtended myocardial volume and myocardial blood flow for diagnosis of obstructive coronary artery disease using cardiac computed tomography: A feasibility study. J Cardiol 2020; 76:259-265. [PMID: 32359811 DOI: 10.1016/j.jjcc.2020.03.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 02/28/2020] [Accepted: 03/11/2020] [Indexed: 11/25/2022]
Abstract
BACKGROUND This study aimed to evaluate the combined diagnostic performance of coronary artery stenosis-subtended myocardial volume (Vsub) and myocardial blood flow (MBFsub) on computed tomography (CT) for detecting obstructive coronary artery disease (CAD) assessed by invasive coronary angiography (ICA) and fractional flow reserve (FFR). METHODS Thirty-nine patients who underwent coronary CT angiography (CTA) and stress dynamic myocardial CT perfusion (CTP) prior to ICA were enrolled. Obstructive CAD was defined as severe (≥70%) or moderate (30-69%) stenosis with FFR ≤0.8 on ICA. The Vsub was semi-automatically calculated from coronary CTA data using Voronoi diagram-based myocardial segmentation. The standard CT-MBF based on the 17-segment model was calculated using dynamic stress CTP data and deconvolution analysis. The CT-MBFsub was automatically analyzed by integrating the CT-MBF and Voronoi diagram-based myocardial segmentation analyses. The diagnostic performance of combined CT-MBFsub and Vsub assessment was determined using receiver operating characteristic analysis and compared with standard CT-MBF and CT-MBFsub. RESULTS Of 117 vessels in 39 patients, 72 vessels were suspected of significant stenosis on CTA and 33 vessels had obstructive CAD on ICA and FFR. The sensitivity and specificity for identifying obstructive CAD were 67% and 82% for standard CT-MBF, 70% and 77% for CT-MBFsub, and 85% and 82% for combined CT-MBFsub and Vsub assessment. The area under the receiver operating characteristic curve of the combined CT-MBFsub and Vsub assessment was significantly higher than those of standard CT-MBF and CT-MBFsub (0.89 vs. 0.75, 0.77; p<0.05). CONCLUSIONS The Vsub may aid in increasing the diagnostic performance of CT-MBFsub for detecting obstructive CAD.
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Affiliation(s)
- Yuki Tanabe
- Department of Radiology, Ehime University Graduate School of Medicine, Shitsukawa, Toon City, Ehime, Japan.
| | - Teruhito Kido
- Department of Radiology, Ehime University Graduate School of Medicine, Shitsukawa, Toon City, Ehime, Japan
| | - Akira Kurata
- Department of Radiology, Ehime University Graduate School of Medicine, Shitsukawa, Toon City, Ehime, Japan
| | - Teruyoshi Uetani
- Department of Cardiology, Pulmonology, Hypertension and Nephrology, Ehime University Graduate School of Medicine, Shitsukawa, Toon City, Ehime, Japan
| | - Natsumi Kuwahara
- Department of Radiology, Ehime University Graduate School of Medicine, Shitsukawa, Toon City, Ehime, Japan
| | - Tomoro Morikawa
- Department of Radiology, Ehime University Graduate School of Medicine, Shitsukawa, Toon City, Ehime, Japan
| | - Naoto Kawaguchi
- Department of Radiology, Ehime University Graduate School of Medicine, Shitsukawa, Toon City, Ehime, Japan
| | - Tomoyuki Kido
- Department of Radiology, Ehime University Graduate School of Medicine, Shitsukawa, Toon City, Ehime, Japan
| | - Kazuhisa Nishimura
- Department of Cardiology, Pulmonology, Hypertension and Nephrology, Ehime University Graduate School of Medicine, Shitsukawa, Toon City, Ehime, Japan
| | - Shuntaro Ikeda
- Department of Cardiology, Pulmonology, Hypertension and Nephrology, Ehime University Graduate School of Medicine, Shitsukawa, Toon City, Ehime, Japan
| | - Osamu Yamaguchi
- Department of Cardiology, Pulmonology, Hypertension and Nephrology, Ehime University Graduate School of Medicine, Shitsukawa, Toon City, Ehime, Japan
| | - Teruhito Mochizuki
- Department of Radiology, Ehime University Graduate School of Medicine, Shitsukawa, Toon City, Ehime, Japan
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Morikawa T, Kozakai A, Kosugi A, Bessho H, Shibahara T. Image processing analysis of oral cancer, oral potentially malignant disorders, and other oral diseases using optical instruments. Int J Oral Maxillofac Surg 2020; 49:515-521. [DOI: 10.1016/j.ijom.2019.08.016] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 06/14/2019] [Accepted: 08/20/2019] [Indexed: 11/29/2022]
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Miura T, Aoki T, Ohtsuka H, Aoki S, Hata T, Iseki M, Takadate T, Ariake K, Kawaguchi K, Masuda K, Ishida M, Mizuma M, Hayashi H, Nakagawa K, Morikawa T, Motoi F, Sasano H, Naitoh T, Kamei T, Unno M. Preoperative neutrophil‐to‐lymphocyte ratio (NLR) predicts recurrence after surgery in patient with pancreatic neuroendocrine neoplasm (PanNEN). Ann Oncol 2019. [DOI: 10.1093/annonc/mdz422.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Kojima K, Ebuchi Y, Migita S, Morikawa T, Mineki T, Tamaki T, Akutsu N, Murata N, Kitano D, Sudo M, Fukamachi D, Takayama T, Hiro T, Hirayama A, Okumura Y. P1828Aortic calcification detected by computed tomography and aortic vulnerable plaques: aortic angioscopy study. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Aortic calcification is associated with atherosclerotic risk factors and an increased risk of death and cardiovascular disease. However, the relationships aortic calcification and aortic plaque instability are not yet elucidated. Recently, some reports showed non-obstructive aortic angioscopy seemed to visualize atherosclerotic changes of aortic wall more clearly compared with computed tomography (CT). The purpose of this study was to evaluate whether aortic calcification is associated with aortic vulnerable plaques in patients with cardiovascular disease.
Methods
We investigated 60 consecutive patients with confirmed or suspected coronary artery disease who underwent both aortic angioscopy and CT. The AC volume (ACV) was measured using the volume-rendering method by extracting the area >130 HU within the whole aorta. ACV index (ACVI) was defined as ACV divided by the body surface area. We evaluated the number of ruptured plaque (RP), ulceration and fissure by aortic angioscopy in the whole aorta. We excluded 4 hemodialysis patients. All patients were divided into the median value of ACVI.
Results
The mean age of patients was 68±10. The median of ACVI was 10.7 ml/m2 [3.9–22.7]. High ACVI patients had significantly greater number of RP, ulceration and atheromatous plaques detected by aortic angioscopy compared with those of low ACVI (2.2±2.7 vs 0.8±1.1, p=0.033, 1.6±1.2 vs 0.9±1.0, p=0.041, 4.0±3.1 vs 1.9±1.8, p=0.009, respectively). Furthermore, the patients without aortic calcification did not have RP at all. In a multivariate model, the number of the atheromatous plaques was independently associated with high ACVI (odds ratio 1.57, 95% confidence interval 1.07–2.69, p=0.018)
Conclusions
Aortic calcification detected by CT was related to aortic vulnerable plaques in patients with cardiovascular disease.
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Affiliation(s)
- K Kojima
- Nihon University School of Medicine, Tokyo, Japan
| | - Y Ebuchi
- Nihon University School of Medicine, Tokyo, Japan
| | - S Migita
- Nihon University School of Medicine, Tokyo, Japan
| | - T Morikawa
- Nihon University School of Medicine, Tokyo, Japan
| | - T Mineki
- Nihon University School of Medicine, Tokyo, Japan
| | - T Tamaki
- Nihon University School of Medicine, Tokyo, Japan
| | - N Akutsu
- Nihon University School of Medicine, Tokyo, Japan
| | - N Murata
- Nihon University School of Medicine, Tokyo, Japan
| | - D Kitano
- Nihon University School of Medicine, Tokyo, Japan
| | - M Sudo
- Nihon University School of Medicine, Tokyo, Japan
| | - D Fukamachi
- Nihon University School of Medicine, Tokyo, Japan
| | - T Takayama
- Nihon University School of Medicine, Tokyo, Japan
| | - T Hiro
- Nihon University School of Medicine, Tokyo, Japan
| | - A Hirayama
- Nihon University School of Medicine, Tokyo, Japan
| | - Y Okumura
- Nihon University School of Medicine, Tokyo, Japan
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Kojima K, Hiro T, Ebuchi Y, Morikawa T, Migita S, Tamaki T, Mineki T, Akutsu N, Murata N, Kitano D, Sudo M, Fukamachi D, Takayama T, Hirayama A, Okumura Y. 6125High wall shear stress predicts plaque rupture of the aortic arch: computational fluid dynamics model and non-obstructive general angioscopy study. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Wall shear stress (WSS) has been considered as a major determinant of aortic atherosclerosis. Recently, non-obstructive general angioscopy (NOGA) was developed to be able to visualize a variety of its atherosclerotic pathology, including in vivo ruptured plaque (RP) in the aorta. We, therefore, investigated the relationship between NOGA derived RP in the aortic arch and the stereographic distribution of WSS by using computational fluid dynamics modeling (CFD) on three-dimensional CT angiography (3D-CT).
Methods
We investigated 30 consecutive patients who underwent 3D-CT before and NOGA during coronary angiography. WSS in the aortic arch was measured with an application of CFD based on finite element method by using uniform inlet and outlet flow conditions. Aortic RP was detected by NOGA.
Results
The maximum and mean values of WSS were 67.2±29.2 Pa and 2.4±0.6 Pa. A total of 18 RPs was detected by NOGA. The patients with a distinct RP showed a significantly higher maximum WSS in the whole aortic arch, and the greater and lesser curvature of the aortic arch than those without it (73.3±29.0 Pa vs 50.4±15.2 Pa, p=0.035, 95.0±27.5 Pa vs 42.8±25.2 Pa, p=0.003, 70.8±29.3 Pa vs 46.1±11.9 Pa, p=0.013, respectively), whereas there was no significant difference in the mean WSS between those with and without it. In a multivariate analysis, the maximum value of WSS was an independent predictor of RP in the aortic arch (odds ratio 1.05, 95% confidence interval 1.01–1.13, p=0.019).
Representative picture of WSS and NOGA
Conclusions
Aortic RP detected by NOGA was strongly associated with the higher maximum WSS in the aortic arch derived by CFD using 3D-CT. Maximum WSS may explain the underlying mechanism of not only aortic atherosclerosis, but also aortic RP.
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Affiliation(s)
- K Kojima
- Nihon University School of Medicine, Tokyo, Japan
| | - T Hiro
- Nihon University School of Medicine, Tokyo, Japan
| | - Y Ebuchi
- Nihon University School of Medicine, Tokyo, Japan
| | - T Morikawa
- Nihon University School of Medicine, Tokyo, Japan
| | - S Migita
- Nihon University School of Medicine, Tokyo, Japan
| | - T Tamaki
- Nihon University School of Medicine, Tokyo, Japan
| | - T Mineki
- Nihon University School of Medicine, Tokyo, Japan
| | - N Akutsu
- Nihon University School of Medicine, Tokyo, Japan
| | - N Murata
- Nihon University School of Medicine, Tokyo, Japan
| | - D Kitano
- Nihon University School of Medicine, Tokyo, Japan
| | - M Sudo
- Nihon University School of Medicine, Tokyo, Japan
| | - D Fukamachi
- Nihon University School of Medicine, Tokyo, Japan
| | - T Takayama
- Nihon University School of Medicine, Tokyo, Japan
| | - A Hirayama
- Nihon University School of Medicine, Tokyo, Japan
| | - Y Okumura
- Nihon University School of Medicine, Tokyo, Japan
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Nozawa H, Morikawa T, Kawai K, Hata K, Tanaka T, Nishikawa T, Sasaki K, Shuno Y, Kaneko M, Hiyoshi M, Emoto S, Murono K, Sonoda H, Fukayama M, Ishihara S. Obstruction is associated with perineural invasion in T3/T4 colon cancer. Colorectal Dis 2019; 21:917-924. [PMID: 31017742 DOI: 10.1111/codi.14655] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Accepted: 03/05/2019] [Indexed: 12/23/2022]
Abstract
AIM Perineural invasion (PNI) is a risk factor for recurrence and metastasis and consequently leads to decreased survival in patients with various malignancies. Recent studies showed that stent placement in obstructive colon cancer increases the frequency of PNI. We hypothesized that mechanical stress including obstruction itself may be associated with PNI. METHOD We retrospectively reviewed 496 patients with pathological T3 or T4 colon cancer who did not receive preoperative treatment. Data were collected from medical charts and pathological findings. The relationships between PNI and other clinicopathological factors were analysed using univariate and multivariate analyses. RESULTS PNI was observed in 239 (48%) patients. Obstruction was markedly more frequent in PNI-positive cancer (39%) than in PNI-negative cancer (24%, P = 0.0003). Multivariate analyses identified obstruction as one of the significant factors associated with PNI (OR 1.68, P = 0.028). Moreover, in 414 patients without distant metastasis who underwent complete resection, PNI was an independent factor associated with poor recurrence-free survival (hazard ratio 2.35, P = 0.003). The coexistence of PNI and obstruction resulted in greater decreases in recurrence-free survival than PNI-negative and/or non-obstructive cases. CONCLUSION Our results suggest that obstruction is associated with PNI and consequently contributes to an increased postoperative recurrence in colon cancer.
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Affiliation(s)
- H Nozawa
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - T Morikawa
- Department of Pathology, University of Tokyo, Tokyo, Japan
| | - K Kawai
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - K Hata
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - T Tanaka
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - T Nishikawa
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - K Sasaki
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - Y Shuno
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - M Kaneko
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - M Hiyoshi
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - S Emoto
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - K Murono
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - H Sonoda
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
| | - M Fukayama
- Department of Pathology, University of Tokyo, Tokyo, Japan
| | - S Ishihara
- Department of Surgical Oncology, University of Tokyo, Tokyo, Japan
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Sakaguchi Y, Takahashi R, Kasai S, Ohuchi K, Morikawa T. Sample environment equipment for light irradiation experiments at J-PARC. JNR 2019. [DOI: 10.3233/jnr-190104] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Y. Sakaguchi
- Neutron Science and Technology Center, Comprehensive Research Organization for Science and Society, Japan. E-mail:
| | - R. Takahashi
- J-PARC Center, Japan Atomic Energy Agency, Japan. E-mails: , , ,
| | - S. Kasai
- J-PARC Center, Japan Atomic Energy Agency, Japan. E-mails: , , ,
| | - K. Ohuchi
- J-PARC Center, Japan Atomic Energy Agency, Japan. E-mails: , , ,
| | - T. Morikawa
- J-PARC Center, Japan Atomic Energy Agency, Japan. E-mails: , , ,
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Kitano D, Takayama T, Fukamachi D, Migita S, Morikawa T, Kogo T, Kojima K, Mineki T, Murata N, Akutsu N, Oshima T, Sudo M, Haruta H, Hiro T, Hirayama A. P2638Comparison of in-stent responses in 8 month between durable polymer and bioabsorbable polymer everolimus-eluting stent: serial observation with angioscopy and optical coherence tomography. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- D Kitano
- Nihon University School of Medicine, Tokyo, Japan
| | - T Takayama
- Nihon University School of Medicine, Tokyo, Japan
| | - D Fukamachi
- Nihon University School of Medicine, Tokyo, Japan
| | - S Migita
- Nihon University School of Medicine, Tokyo, Japan
| | - T Morikawa
- Nihon University School of Medicine, Tokyo, Japan
| | - T Kogo
- Nihon University School of Medicine, Tokyo, Japan
| | - K Kojima
- Nihon University School of Medicine, Tokyo, Japan
| | - T Mineki
- Nihon University School of Medicine, Tokyo, Japan
| | - N Murata
- Nihon University School of Medicine, Tokyo, Japan
| | - N Akutsu
- Nihon University School of Medicine, Tokyo, Japan
| | - T Oshima
- Nihon University School of Medicine, Tokyo, Japan
| | - M Sudo
- Nihon University School of Medicine, Tokyo, Japan
| | - H Haruta
- Nihon University School of Medicine, Tokyo, Japan
| | - T Hiro
- Nihon University School of Medicine, Tokyo, Japan
| | - A Hirayama
- Nihon University School of Medicine, Tokyo, Japan
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Yoshida H, Nagaoka A, Komiya A, Aoki M, Nakamura S, Morikawa T, Ohtsuki R, Sayo T, Okada Y, Takahashi Y. Reduction of hyaluronan and increased expression of HYBID (alias CEMIP and KIAA1199) correlate with clinical symptoms in photoaged skin. Br J Dermatol 2018; 179:136-144. [PMID: 29330857 DOI: 10.1111/bjd.16335] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/14/2017] [Indexed: 01/16/2023]
Abstract
BACKGROUND Hyaluronan (HA) metabolism in skin fibroblasts is mediated by HYBID (hyaluronan binding protein involved in hyaluronan depolymerization, alias CEMIP and KIAA1199) and the HA synthases HAS1 and HAS2. However, photoageing-dependent changes in HA and their molecular mechanisms, and the relationship between HA metabolism and clinical symptoms in photoaged skin remain elusive. OBJECTIVES We examined the amount, size and tissue distribution of HA and expression levels of HYBID, HAS1 and HAS2 in photoaged skin, and analysed their relationship with the degree of photoageing. METHODS Photoageing-dependent changes of HA were investigated by studying skin biopsies isolated from photoprotected and photoexposed areas of the same donors, and the relationships between HA and photoageing symptoms such as skin wrinkling and sagging were examined. RESULTS Skin biopsy specimens showed that the amount and size of HA are decreased in photoexposed skin compared with photoprotected skin, and this was accompanied by increased expression of HYBID and decreased expression of HAS1 and HAS2. Histologically, HA staining in the papillary dermis was decreased in photoexposed skin, showing reverse correlation with HYBID expression. HYBID expression in the photoexposed skin directly correlated with skin roughness and sagging parameters, and the reduced HA staining in the papillary dermis in the photoexposed skin positively correlated with these symptoms. CONCLUSIONS These data demonstrate that imbalance between HYBID-mediated HA degradation and HAS-mediated HA synthesis may contribute to enhanced HA catabolism in photoaged skin, and suggest that HYBID-mediated HA reduction in the papillary dermis is related to skin wrinkling and sagging of photoaged skin.
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Affiliation(s)
- H Yoshida
- Biological Science Research, Kao Corporation, 3-28, 5-chome, Kotobuki-cho, Odawara-shi, Kanagawa, 250-0002, Japan
| | - A Nagaoka
- Safety Science Research, Kao Corporation, 3-28, 5-chome, Kotobuki-cho, Odawara-shi, Kanagawa, 250-0002, Japan
| | - A Komiya
- Biological Science Research, Kao Corporation, 3-28, 5-chome, Kotobuki-cho, Odawara-shi, Kanagawa, 250-0002, Japan
| | - M Aoki
- Biological Science Research, Kao Corporation, 3-28, 5-chome, Kotobuki-cho, Odawara-shi, Kanagawa, 250-0002, Japan
| | - S Nakamura
- Biological Science Research, Kao Corporation, 3-28, 5-chome, Kotobuki-cho, Odawara-shi, Kanagawa, 250-0002, Japan
| | - T Morikawa
- Biological Science Research, Kao Corporation, 3-28, 5-chome, Kotobuki-cho, Odawara-shi, Kanagawa, 250-0002, Japan
| | - R Ohtsuki
- Makeup Products Research, Kao Corporation, 3-28, 5-chome, Kotobuki-cho, Odawara-shi, Kanagawa, 250-0002, Japan
| | - T Sayo
- Biological Science Research, Kao Corporation, 3-28, 5-chome, Kotobuki-cho, Odawara-shi, Kanagawa, 250-0002, Japan
| | - Y Okada
- Department of Pathophysiology for Locomotive and Neoplastic Diseases, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Y Takahashi
- Biological Science Research, Kao Corporation, 3-28, 5-chome, Kotobuki-cho, Odawara-shi, Kanagawa, 250-0002, Japan
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Ishihara S, Kawai K, Tanaka T, Kiyomatsu T, Hata K, Nozawa H, Morikawa T, Watanabe T. Diagnostic value of FDG-PET/CT for lateral pelvic lymph node metastasis in rectal cancer treated with preoperative chemoradiotherapy. Tech Coloproctol 2018; 22:347-354. [DOI: 10.1007/s10151-018-1779-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 01/19/2018] [Indexed: 02/06/2023]
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Iseri K, Iyoda M, Shikida Y, Inokuchi T, Morikawa T, Hara N, Hirano T, Shibata T. Rituximab for the treatment of type B insulin resistance syndrome: a case report and review of the literature. Diabet Med 2017; 34:1788-1791. [PMID: 29044634 DOI: 10.1111/dme.13524] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/12/2017] [Indexed: 11/30/2022]
Abstract
BACKGROUND Type B insulin resistance syndrome is a rare disease characterized by refractory transient hyperglycaemia and severe insulin resistance associated with circulating anti-insulin receptor antibodies. A standardized treatment regimen for type B insulin resistance syndrome has yet to be established. CASE REPORT We report the case of a 64-year-old man undergoing haemodialysis for antineutrophil cytoplasmic antibody-associated vasculitis and diabetic nephropathy, who developed rapid onset of hyperglycaemia (glycated albumin 52.1%). Type B insulin resistance syndrome was diagnosed, on the basis of positivity for anti-insulin receptor antibodies and the man's autoimmune history of antineutrophil cytoplasmic antibody-associated vasculitis and idiopathic thrombocytopenic purpura. Although severe hyperglycaemia persisted in spite of corticosteroids and high-dose insulin therapy, rituximab treatment resulted in remarkable improvement of the man's severe insulin resistance and disappearance of anti-insulin receptor antibodies without any adverse effects. CONCLUSIONS According to a literature review of 11 cases in addition to the present case, rituximab appears to be a safe and effective strategy for the treatment of corticosteroid-resistant type B insulin resistance syndrome.
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Affiliation(s)
- K Iseri
- Division of Nephrology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan
| | - M Iyoda
- Division of Nephrology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan
| | - Y Shikida
- Division of Nephrology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan
| | - T Inokuchi
- Division of Nephrology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan
| | - T Morikawa
- Division of Nephrology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan
| | - N Hara
- Division of Diabetes, Metabolism and Endocrinology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan
| | - T Hirano
- Division of Diabetes, Metabolism and Endocrinology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan
| | - T Shibata
- Division of Nephrology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan
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Toyoda T, Totsuka Y, Matsushita K, Morikawa T, Miyoshi N, Wakabayashi K, Ogawa K. γ-H2AX formation in the urinary bladder of rats treated with two norharman derivatives obtained from o
-toluidine and aniline. J Appl Toxicol 2017; 38:537-543. [DOI: 10.1002/jat.3560] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2017] [Revised: 09/20/2017] [Accepted: 10/04/2017] [Indexed: 11/07/2022]
Affiliation(s)
- T. Toyoda
- Division of Pathology; National Institute of Health Sciences; 3-25-26 Tonomachi Kawasaki-ku Kawasaki 210-9501 Japan
| | - Y. Totsuka
- Division of Carcinogenesis and Cancer Prevention; National Cancer Center Research Institute; 5-1-1 Tsukiji Chuo-ku Tokyo 104-0045 Japan
| | - K. Matsushita
- Division of Pathology; National Institute of Health Sciences; 3-25-26 Tonomachi Kawasaki-ku Kawasaki 210-9501 Japan
| | - T. Morikawa
- Division of Pathology; National Institute of Health Sciences; 3-25-26 Tonomachi Kawasaki-ku Kawasaki 210-9501 Japan
| | - N. Miyoshi
- Laboratory of Biochemistry, Graduate Program of Food Nutritional Sciences; University of Shizuoka; 52-1 Yada Suruga-ku Shizuoka 422-8526 Japan
| | - K. Wakabayashi
- Graduate Division of Nutritional and Environmental Sciences; University of Shizuoka; 52-1 Yada Suruga-ku Shizuoka 422-8526 Japan
| | - K. Ogawa
- Division of Pathology; National Institute of Health Sciences; 3-25-26 Tonomachi Kawasaki-ku Kawasaki 210-9501 Japan
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Ishida M, Sakata N, Ise I, Ono T, Shimura M, Ishii K, Murakami M, Takadate T, Aoki T, Kudo K, Ohnuma S, Fukase K, Ohtsuka H, Mizuma M, Hayashi H, Nakagawa K, Morikawa T, Motoi F, Naitoh T, Unno M. The comparative anatomy of the folds, fossae, and adhesions around the duodenojejunal flexure in mammals. Folia Morphol (Warsz) 2017; 77:286-292. [PMID: 29064554 DOI: 10.5603/fm.a2017.0089] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2017] [Revised: 08/29/2017] [Accepted: 09/20/2017] [Indexed: 11/25/2022]
Abstract
BACKGROUND Anatomical knowledge of the duodenojejunal flexure is necessary for abdominal surgeries, and also important for physiologic studies about the duodenum. But little is known about the anatomy of this region in mammals. Here, we examined comparative anatomy to understand the anatomical formation of the duodenojejunal flexure in mammals. MATERIALS AND METHODS The areas around the duonenojejunal flexure were ob-served in mouse, rat, dog, pig, and human, and the anatomical structures around the duodenojejunal junction in the animals were compared with those in human. RESULTS The superior and inferior duodenal folds, and the superior and inferior duodenal fossae were identified in all examined humans. In pig, the structures were not clearly identified because the duodenum strongly adhered to the retroperitoneum and to the mesocolon. In mouse, rat, and dog, only the plica duodenocolica, which is regarded as the animal counterpart of the superior duo-denal fold in human, was identified, and other folds or fossae were not observed, probably because the duodenum was not fixed to the parietal peritoneum in those animals. Transection of the plica duodenocolica could return the normally rotated intestine back to the state of non-rotation in rat. CONCLUSIONS This study showed the anatomical similarities and dissimilarities of the duodenojejunal flexure among the mammals. Anatomical knowledge of the area is useful for duodenal and pancreatic surgeries, and for animal studies about the duodenum. (Folia Morphol 2018; 77, 2: 286-292).
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Noda Y, Matsudaira H, Arakawa S, Yoshida K, Morikawa T. Evaluation of neoplasms incidentally detected by preoperative FDG-PET/CT for primary lung cancer. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx086.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Takenami T, Maeda S, Karasawa H, Mochizuki Y, Aizawa T, Jun S, Musha H, Morikawa T, Nakagawa K, Hayashi H, Motoi F, Naitoh T, Unno M. 46P Identification of novel biomarkers distinguishing pancreatic head cancer from distal cholangiocarcinoma discovered by proteomics analysis. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw574.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Fukui S, Morikawa T, Hirahara M, Terada Y, Shimizu M, Takeuchi K, Takagi Y. A mild hand cleanser, alkyl ether sulphate supplemented with alkyl ether carboxylic acid and alkyl glucoside, improves eczema on the hand and prevents the growth ofStaphylococcus aureuson the skin surface. Int J Cosmet Sci 2016; 38:599-606. [DOI: 10.1111/ics.12325] [Citation(s) in RCA: 8] [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] [Received: 11/11/2015] [Accepted: 03/23/2016] [Indexed: 11/30/2022]
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Fukuoka A, Matsushita K, Morikawa T, Takano H, Yoshimoto T. Diesel exhaust particles exacerbate allergic rhinitis in mice by disrupting the nasal epithelial barrier. Clin Exp Allergy 2015. [DOI: 10.1111/cea.12597] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- A. Fukuoka
- Laboratory of Allergic Diseases; Institute for Advanced Medical Sciences; Hyogo College of Medicine; Nishinomiya Hyogo Japan
| | - K. Matsushita
- Laboratory of Allergic Diseases; Institute for Advanced Medical Sciences; Hyogo College of Medicine; Nishinomiya Hyogo Japan
| | - T. Morikawa
- Laboratory of Allergic Diseases; Institute for Advanced Medical Sciences; Hyogo College of Medicine; Nishinomiya Hyogo Japan
- Department of Otorhinolaryngology-Head and Neck Surgery; Faculty of Medical Science; University of Fukui; Fukui Japan
| | - H. Takano
- Environmental Health Division; Department of Environmental Engineering; Graduate School of Engineering; Kyoto University; Kyoto Japan
| | - T. Yoshimoto
- Laboratory of Allergic Diseases; Institute for Advanced Medical Sciences; Hyogo College of Medicine; Nishinomiya Hyogo Japan
- Department of Immunology; Hyogo College of Medicine; Nishinomiya Hyogo Japan
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Ohta R, Onda T, Morikawa T, Ogane S, Nomura T, Takano N, Shibahara T. Clinical review of medication-related osteonecrosis of the jaw regarding risk factors for tooth extraction. Int J Oral Maxillofac Surg 2015. [DOI: 10.1016/j.ijom.2015.08.265] [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: 10/22/2022]
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Tokunaga T, Sakashita M, Haruna T, Asaka D, Takeno S, Ikeda H, Nakayama T, Seki N, Ito S, Murata J, Sakuma Y, Yoshida N, Terada T, Morikura I, Sakaida H, Kondo K, Teraguchi K, Okano M, Otori N, Yoshikawa M, Hirakawa K, Haruna S, Himi T, Ikeda K, Ishitoya J, Iino Y, Kawata R, Kawauchi H, Kobayashi M, Yamasoba T, Miwa T, Urashima M, Tamari M, Noguchi E, Ninomiya T, Imoto Y, Morikawa T, Tomita K, Takabayashi T, Fujieda S. Novel scoring system and algorithm for classifying chronic rhinosinusitis: the JESREC Study. Allergy 2015; 70:995-1003. [PMID: 25945591 PMCID: PMC5032997 DOI: 10.1111/all.12644] [Citation(s) in RCA: 385] [Impact Index Per Article: 42.8] [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] [Accepted: 05/02/2015] [Indexed: 01/22/2023]
Abstract
Background Chronic rhinosinusitis (CRS) can be classified into CRS with nasal polyps (CRSwNP) and CRS without nasal polyps (CRSsNP). CRSwNP displays more intense eosinophilic infiltration and the presence of Th2 cytokines. Mucosal eosinophilia is associated with more severe symptoms and often requires multiple surgeries because of recurrence; however, even in eosinophilic CRS (ECRS), clinical course is variable. In this study, we wanted to set objective clinical criteria for the diagnosis of refractory CRS. Methods This was a retrospective study conducted by 15 institutions participating in the Japanese Epidemiological Survey of Refractory Eosinophilic Chronic Rhinosinusitis (JESREC). We evaluated patients with CRS treated with endoscopic sinus surgery (ESS), and risk of recurrence was estimated using Cox proportional hazard models. Multiple logistic regression models and receiver operating characteristics curves were constructed to create the diagnostic criterion for ECRS. Results We analyzed 1716 patients treated with ESS. To diagnose ECRS, the JESREC scoring system assessed unilateral or bilateral disease, the presence of nasal polyps, blood eosinophilia, and dominant shadow of ethmoid sinuses in computed tomography (CT) scans. The cutoff value of the score was 11 points (sensitivity: 83%, specificity: 66%). Blood eosinophilia (>5%), ethmoid sinus disease detected by CT scan, bronchial asthma, aspirin, and nonsteroidal anti‐inflammatory drugs intolerance were associated significantly with recurrence. Conclusion We subdivided CRSwNP in non‐ECRS, mild, moderate, and severe ECRS according to our algorithm. This classification was significantly correlated with prognosis. It is notable that this algorithm may give useful information to clinicians in the refractoriness of CRS before ESS or biopsy.
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Funakoshi A, Morikawa T, Futoo E, Bessho H, Nomura T, Takano N, Shibahara T. Female patients with oral squamous cell carcinoma in Japan. J Oral Maxillofac Surg 2014. [DOI: 10.1016/j.joms.2014.06.283] [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: 10/24/2022]
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Natsume J, Maeda N, Itomi K, Kidokoro H, Ishihara N, Takada H, Okumura A, Kubota T, Miura K, Aso K, Morikawa T, Kato K, Negoro T, Watanabe K. PET in infancy predicts long-term outcome during adolescence in cryptogenic West syndrome. AJNR Am J Neuroradiol 2014; 35:1580-5. [PMID: 24676006 DOI: 10.3174/ajnr.a3899] [Citation(s) in RCA: 6] [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: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Developmental and seizure outcomes in patients with cryptogenic West syndrome are variable. Our aim was to clarify the relationship between FDG-PET findings in infancy and long-term seizure and developmental outcome in cryptogenic West syndrome. MATERIALS AND METHODS From 1991 to 1999, we prospectively performed FDG-PET from the onset of cryptogenic West syndrome in 27 patients. PET was performed at onset and at 10 months of age. In 2012, we evaluated the educational status, psychomotor development, and seizure outcome in 23 of the 27 patients (13-22 years of age). The correlation between PET findings and outcome was evaluated. RESULTS At onset, PET showed hypometabolism in 13 patients (57%). The second PET after the initial treatment revealed cortical hypometabolism in 7 patients (30%). While hypometabolism at onset disappeared on the second PET in 9 patients, it was newly revealed in 3 patients on the second PET. In 2012, seven patients had persistent or recurrent seizures. Eight patients had intellectual impairment. The first PET did not correlate with seizure or developmental outcome. Five of 7 patients (71%) with hypometabolism seen on the second PET had persistent or recurrent seizures, while 14 of 16 (88%) patients with normal findings on the second PET were free of seizures. Five of 7 patients (71%) showing hypometabolism on the second PET had intellectual impairment. Thirteen of 16 (81%) patients with normal findings on the second PET showed normal intelligence. A significant correlation was found between the second PET and long-term seizure (P = .01) or developmental outcome (P = .03). CONCLUSIONS Cortical hypometabolism is not permanent; it changes with clinical symptoms. Hypometabolism after initial treatment predicts long-term seizures and poor developmental outcome.
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Affiliation(s)
- J Natsume
- From the Departments of Pediatrics (J.N., N.M., H.K., N.I., H.T., K.M., T.N.)
| | - N Maeda
- From the Departments of Pediatrics (J.N., N.M., H.K., N.I., H.T., K.M., T.N.)
| | - K Itomi
- Department of Neurology (K.I.), Aichi Children's Health and Medical Center, Obu, Japan
| | - H Kidokoro
- From the Departments of Pediatrics (J.N., N.M., H.K., N.I., H.T., K.M., T.N.)
| | - N Ishihara
- From the Departments of Pediatrics (J.N., N.M., H.K., N.I., H.T., K.M., T.N.)
| | - H Takada
- From the Departments of Pediatrics (J.N., N.M., H.K., N.I., H.T., K.M., T.N.)
| | - A Okumura
- Department of Pediatrics (A.O.), Juntendo University Faculty of Medicine, Tokyo, Japan
| | - T Kubota
- Department of Pediatrics (T.K.), Anjo Kosei Hospital, Anjo, Japan
| | - K Miura
- From the Departments of Pediatrics (J.N., N.M., H.K., N.I., H.T., K.M., T.N.)
| | - K Aso
- Department of Pediatrics (K.A.), Aichi Prefecture Medical Welfare Center of Aoitori, Nagoya, Japan
| | | | - K Kato
- Radiological and Medical Laboratory Sciences (K.K.), Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - T Negoro
- From the Departments of Pediatrics (J.N., N.M., H.K., N.I., H.T., K.M., T.N.)
| | - K Watanabe
- Faculty of Health and Medical Sciences (K.W.), Aichi Shukutoku University, Nagakute, Japan
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Nomura T, Ogane S, Yamamoto N, Takano N, Shibahara T, Watabe Y, Morikawa T, Bessho H, Onda T. Diagnosis and treatment of floor of mouth carcinoma in japan. Int J Oral Maxillofac Surg 2013. [DOI: 10.1016/j.ijom.2013.07.360] [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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Fujita K, Harano Y, Morikawa T, Andou J, Myojo S, Yoshida S. Endoscopic treatment of biliary obstruction in a patient with sump syndrome. Endoscopy 2012; 44 Suppl 2 UCTN:E228-9. [PMID: 22622760 DOI: 10.1055/s-0032-1309349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- K Fujita
- Gastroenterology, Tabata Gastrointestinal Hospital, Akashi, Hyogo, Japan.
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Ishikawa T, Kitayama M, Chono A, Onda K, Okimoto Y, Koshihara S, Nakano Y, Yamochi H, Morikawa T, Shirahata T, Misaki Y. Probing the metal-insulator phase transition in the (DMEDO-EBDT)2PF6 single crystal by optical measurements. J Phys Condens Matter 2012; 24:195501. [PMID: 22498453 DOI: 10.1088/0953-8984/24/19/195501] [Citation(s) in RCA: 3] [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: 05/31/2023]
Abstract
The temperature and polarization dependence of the optical reflectivity spectra of a quasi-one-dimensional 1/4-filled band system, (DMEDO-EBDT)(2)PF(6), have been investigated. We observed clear anisotropy in the electronic structures corresponding to the anisotropic transport properties. The appearance of a charge gap (E(g) > 0.1 eV) and transfer of the spectral weight accompanied by the metal-insulator phase transition were clearly observed. In addition, a split of the intramolecular vibrational modes was observed, which strongly suggested the existence of charge disproportionation in the low temperature phase. We also observed a photoinduced reflectivity change, which implied the occurrence of a photoinduced phase transition from the low temperature insulating phase to the high temperature metallic phase.
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Affiliation(s)
- T Ishikawa
- Department of Materials Science, Tokyo Institute of Technology, 2-12-1, Oh-okayama, Meguro-ku, Tokyo, Japan.
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Koto M, Hasegawa A, Takagi R, Fujikawa A, Morikawa T, Tsujii H, Kamada T. EP-1051 RISK FACTORS FOR BRAIN INJURY AFTER CARBON ION RADIOTHERAPY FOR SKULL BASE TUMORS. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)71384-1] [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: 10/28/2022]
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Nakamura T, Kajimura M, Morikawa T, Hattori K, Ishikawa M, Yukutake Y, Uchiyama SI, Suematsu M. Acute CO2-independent vasodilatation of penetrating and pre-capillary arterioles in mouse cerebral parenchyma upon hypoxia revealed by a thinned-skull window method. Acta Physiol (Oxf) 2011; 203:187-96. [PMID: 21054808 DOI: 10.1111/j.1748-1716.2010.02212.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AIM Investigating spatio-temporal relationship between regional metabolic changes and microvascular responses in hypoxic brain is critical for unravelling local O(2) -sensing mechanisms. However, no reliable method to examine the relationship has been available because of inherent disadvantages associated with use of a conventional cranial window preparation. We aimed to devise a method to solve the problem. METHODS Anaesthetized mice were equipped with either a conventional cranial window with craniotomy or a thinned-skull preparation. Mice were mechanically ventilated to avoid hypercapnia and exposed to systemic isobaric hypoxia for 30 min. Using two-photon laser scanning microscopy, nicotinamide adenine dinucleotide, reduced form (NADH) autofluorescence and diameter changes in penetrating and pre-capillary arterioles within the parenchyma were visualized to examine their temporal alterations. RESULTS With the conventional cranial window preparation, marked vertical displacement of the tissue occurred through oedema within 30 s after inducing hypoxia. With a thinned-skull preparation, however, such hypoxia-induced displacement was diminished, enabling us to examine acute spatio-temporal changes in diameters of penetrating and pre-capillary arterioles and NADH autofluorescence. Vasodilatation of these microvessels was evoked within 1 min after hypoxia, and sustained during the entire observation period despite the absence of hypercapnia. This event coincided with parenchymal NADH elevation, but the onset and peak dilatory responses of the penetrating arterioles preceded the local metabolic response of the parenchyma. CONCLUSION Observation of hypoxia-exposed brain by the thinned-skull preparation combined with two-photon intra-vital microscopy revealed rapid vasodilatory responses in penetrating arterioles preceding parenchymal NADH elevation, suggesting the presence of acute hypoxia-sensing mechanisms involving specific segments of cortical arterioles within the neurovascular unit.
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Affiliation(s)
- T Nakamura
- Department of Biochemistry, School of Medicine, Keio University, Tokyo, Japan
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Akiba T, Takeishi M, Kinoshita S, Morikawa T. Vascularized rib support for chest wall reconstruction using Gore-Tex(R) dual mesh after wide sternochondral resection. Interact Cardiovasc Thorac Surg 2011; 13:536-8. [DOI: 10.1510/icvts.2011.275479] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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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Fujisaki Y, Matsuzaki N, Kurotsuchi K, Morikawa T, Kinoshita M, Kitai N, Hanzawa S, Moriya H, Takaura N, Terao M, Matsuoka M, Koga T, Moniwa M. Energy Band States of an Oxygen-doped GeSbTe Phase-change Memory Cell; Mechanism of Low-voltage Operation. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-0997-i11-01] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
AbstractPhase-change memory is promising because it has a simple structure and has scalability that originates from its unique operating mechanism. However, the programming current should be reduced in accordance with the scaling of cell size [1,2]. We previously reported PCM (Phase Change Memory) cells that operate under 1.5-V/100-μA writing pulses [3, 4]. This PCM had a cell structure composed of 180-nm-W (tungsten) bottom contact to an O-GST (Oxygen-doped GeSbTe) film. Its low-power characteristic is suitable for 0.13-μm generation embedded applications. In the present study, we introduced a new W/O-GST/TaO/W cell structure and found further decrease of programming current the improved stability in the fabrication process. We analyzed the mechanism by which oxygen in GST and the additional TaO layer reduce the power consumption during SET/RESET operations.
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Abstract
BACKGROUND It is difficult to differentiate histologically between benign and malignant follicular-type tumours of the thyroid gland. The present study evaluated whether sentinel lymph node (SLN) biopsy was helpful in obtaining the correct diagnosis of malignant follicular-type tumours, as metastasis to the lymph nodes is sufficient evidence for a diagnosis of cancer. METHODS SLN biopsy was performed for 37 follicular-type tumours suspected to be malignant on the basis of preoperative examinations, but for which the diagnosis had not been confirmed. RESULTS SNs were identified in 32 of 37 procedures. SLN metastases were found in four of 12 patients with a malignant tumour identified by intraoperative frozen-section analysis. There was one false-negative but no false-positive diagnoses. Frozen-section analysis of the tumour itself identified only one follicular cancer. The accuracies of preoperative imaging methods were lower than that of SLN detection. CONCLUSION Detection of SLN metastasis was helpful in diagnosing follicular thyroid cancer and thus enabling one-stage surgery.
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Affiliation(s)
- H Takeyama
- Department of Surgery, Jikei University School of Medicine, 4-11-1 Izumi-Honcho, Komae City, Tokyo 201-8601, Japan.
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Abstract
Eric Clar's ideas concerning "aromatic sextets" are extended to a quantitative format in terms of a polynomial called the "Clar 2-nomial", along with related derivative quantities. The quantification is successfully tested to make correlations with a selection of numerical data, including resonance energies, bond lengths, and NICS ring-aromaticity values.
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Affiliation(s)
- Anirban Misra
- Texas A&M University at Galveston, MARS, 5007 Avenue U, Texas 77551, USA.
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Morikawa T, Nagahiro I, Endo Y, Sato S, Nakashima A, Takatani M, Mitsumori A. [Intralobar sequestration in elderly patient; report of a case]. Kyobu Geka 2008; 61:812-815. [PMID: 18697466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A 71-year-old woman who had been treated as bronchitis was diagnosed as intralobar sequestration by a computed tomography scan. She had 2 episodes of hemosputum in recent 30 years but the amounts were small and they spontaneously stopped in a day. She had an abnormal vessel from thoracic descending aorta of which diameter was 1 cm draining to the basal segment of the left lung. She was operated on a left lower lobectomy with ligation of the vessel via a thoracotomy. Postoperative course was uneventful, and she discharged home on the 9th postoperative day.
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Affiliation(s)
- T Morikawa
- Department of Surgery, Himeji Red Cross Hospital, Himeji, Japan
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36
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Nakamura H, Iwamoto M, Ogata T, Washida K, Sekine K, Takase M, Park BJ, Morikawa T, Miyazaki Y. Effects of Milk Casein-derived Peptides on Absolute Oxyhaemoglobin Concentrations in the Prefrontal Area and on Work Efficiency after Mental Stress Loading in Male Students. J Int Med Res 2008; 36:638-47. [DOI: 10.1177/147323000803600404] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This study examined the influence of milk casein-derived peptides on cerebral activity after mental stress loading. In a crossover study, 16 male students were given a drink containing peptides (peptide group), or water (control group) before stress loading. The oxyhaemoglobin (HbO2) concentration in the prefrontal area of the brain and work efficiency were measured as indicators of cerebral activity and differences in these parameters were examined according to type A or type B personality. Type A behaviour was defined as: aggression–hostility, hard-driving—time-urgency and speed–power, whereas type B behaviour did not have these characteristics. Peptide intake resulted in a significant increase in both HbO2 concentration and work efficiency, whilst a similar increase was not seen in the control group. When divided into type A or type B personality, the changes in HbO2 concentration for the control group differed significantly in the right prefrontal area. Moreover, in type A subjects the HbO2 concentration in the right prefrontal area following intake was significantly different between the peptide and control groups.
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Affiliation(s)
- H Nakamura
- Nutritional Science Laboratory, Morinaga Milk Industry Co., Ltd, Zama, Kanagawa, Japan
| | - M Iwamoto
- Nutritional Science Laboratory, Morinaga Milk Industry Co., Ltd, Zama, Kanagawa, Japan
| | - T Ogata
- Nutritional Science Laboratory, Morinaga Milk Industry Co., Ltd, Zama, Kanagawa, Japan
| | - K Washida
- Nutritional Science Laboratory, Morinaga Milk Industry Co., Ltd, Zama, Kanagawa, Japan
| | - K Sekine
- Nutritional Science Laboratory, Morinaga Milk Industry Co., Ltd, Zama, Kanagawa, Japan
| | - M Takase
- Nutritional Science Laboratory, Morinaga Milk Industry Co., Ltd, Zama, Kanagawa, Japan
| | - BJ Park
- Centre for Environment, Health and Field Sciences, Chiba University, Kashiwa, Chiba, Japan
| | - T Morikawa
- Forestry and Forest Products Research Institute, Tsukuba, Ibaraki, Japan
| | - Y Miyazaki
- Centre for Environment, Health and Field Sciences, Chiba University, Kashiwa, Chiba, Japan
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Komiyama M, Honnda Y, Matsusaka Y, Morikawa T, Kitano S, Sakamoto H. Cerebral diagnostic and therapeutic angiography for neonatal arteriovenous fistulas. Interv Neuroradiol 2008; 10 Suppl 1:39-42. [PMID: 20587270 DOI: 10.1177/15910199040100s104] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2004] [Accepted: 01/20/2004] [Indexed: 11/17/2022] Open
Abstract
SUMMARY Cerebral diagnostic and therapeutic angiography for neonatal arteriovenous fistulas is reported. Three neonatal boys with vein of Galen aneurysmal malformation (1 patient) and dural arteriovenous fistulas (2 patients) presented severe congestive heart failure soon after birth, and were treated by transarterial and/or transvenous embolization using various access routes. In the neonatal period, umbilical approach and direct cervical approach provide unique access routes in addition to the usual transfemoral route. Characteristics of neonatal angiography are discussed.
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Affiliation(s)
- M Komiyama
- Department of Neurosurgery, Osaka City General Hospital; Osaka -
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Abstract
Thymomas are rare mediastinal tumors in pediatrics and cystic thymoma, is characterized by a predominantly cystic formation, is extremely rare. This report describes a 13-year-old girl with cystic thymoma, who was treated by video-assisted thoracoscopic surgery. The microscopic findings were characteristic of cystic thymoma. The literature on cystic thymoma is reviewed here and the clinical characteristics of cystic thymoma are discussed.
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Affiliation(s)
- S Honda
- Department of Pediatric Surgery, Hokkaido University Graduate School of Medicine, Kita-ku, Kita 15, Nishi 7, Sapporo, 060-8638, Japan.
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39
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Hayama S, Morikawa T, Kondoh S, Katoh H. Multiple early bronchioloalveolar carcinomas in both lungs. Interact Cardiovasc Thorac Surg 2007; 2:506-8. [PMID: 17670107 DOI: 10.1016/s1569-9293(03)00120-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We treated a 49-year-old woman with synchronous multiple bronchioloalveolar carcinomas (BAC). Multiple bilateral 'ground-glass' opacities were detected by computed tomography (CT). We performed partial lung resection, and the pathologic diagnosis was atypical adenomatous hyperplasia. Two and one-half years later, a lesion showed enlargement, and was resected along with some others. The histopathologic diagnosis was multiple early BAC. High-resolution CT is likely to detect increasing numbers of similar cases.
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Affiliation(s)
- S Hayama
- Department of Surgical Oncology, Hokkaido University School of Medicine, N-15, W-7, Kita-ku, Sapporo 060-8638, Japan.
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Abstract
Sterols are isoprenoid-derived lipids that are produced via the mevalonate pathway and are involved in various cellular functions in eukaryotes such as maintenance of membrane integrity and biosynthetic precursors of steroid hormones. Among cellular sterols, Δ22-sterols containing a double bond at C-22 in the sterol side chain specifically occur in fungi (ergosterol) and plants (stigmasterol and brassicasterol), and several lines of experimental evidence have suggested specific physiological roles of Δ22-sterols in plants. Fungal cytochrome P450 (P450), CYP61, has been established as the sterol C-22 desaturase functioning at the penultimate step in the ergosterol biosynthetic pathway. On the other hand, no particular sequence has been assigned as to the enzyme responsible for the introduction of the double bond into the sterol side chain in plants. In this review, we summarize our recent findings demonstrating that CYP710A P450 family genes encode the plant sterol C-22 desaturases to produce stigmasterol and brassicasterol/crinosterol from β-sitosterol and 24-epi-campesterol respectively.
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Affiliation(s)
- T Morikawa
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai 599-8531, Japan
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Morikawa T, Shirai E, Tanno J, Takanashi H, Yasuda A, Itoh K. Time-resolved Total Internal Reflection Raman Scattering Study on Electric-Field-Induced Reorientation Dynamics of Nematic Liquid Crystal of 4-Hexyl-4′-Cyanobiphenyl. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/10587259808042432] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- T. Morikawa
- a Department of Chemistry , School of Science and Engineering, Waseda University , Shinjuku-ku, Tokyo , 169 , Japan
| | - E. Shirai
- a Department of Chemistry , School of Science and Engineering, Waseda University , Shinjuku-ku, Tokyo , 169 , Japan
| | - J. Tanno
- a Department of Chemistry , School of Science and Engineering, Waseda University , Shinjuku-ku, Tokyo , 169 , Japan
| | - H. Takanashi
- b Sony Corporation Research Center , Fujizuka-cho, Hodogaya-ku, Yokohama , 240 , Japan
| | - A. Yasuda
- b Sony Corporation Research Center , Fujizuka-cho, Hodogaya-ku, Yokohama , 240 , Japan
| | - K. Itoh
- a Department of Chemistry , School of Science and Engineering, Waseda University , Shinjuku-ku, Tokyo , 169 , Japan
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Mega S, Miyamoto M, Li L, Kadoya M, Takahashi R, Hase R, Kaneko H, Shichinohe T, Kawarada Y, Itoh T, Morikawa T, Kondo S. Immunohistochemical analysis of nuclear survivin expression in esophageal squamous cell carcinoma. Dis Esophagus 2006; 19:355-9. [PMID: 16984532 DOI: 10.1111/j.1442-2050.2006.00604.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Despite advances in the treatment of esophageal carcinoma, the prognosis for this disease remains poor. Therefore, it is important to obtain a better understanding of the molecular basis of esophageal carcinogenesis. The purpose of this study was to clarify the roles of survivin in esophageal squamous cell carcinoma (ESCC). One hundred 22 ESCC surgical specimens resected from 1989 to 1999 were examined. Survivin expression was assessed by immunohistochemistry. Tumor cells were considered survivin-positive if the immunoreactivity was confined to the nucleus, and a scoring method was applied. Survivin-positive immunostaining was detected in 68 patients (56%). There was a significant association between survivin expression and pN (P = 0.0472). Moreover, the overall survival rate was worse in patients with survivin-positive tumors than in patients with survivin-negative tumors (P = 0.0189). The overexpression of survivin was associated with the overall survival rate and poor prognosis in patients with ESCC. Survivin may be targeted during cancer therapy because of its selective expression in malignant tissue.
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Affiliation(s)
- S Mega
- Surgical Oncology, Cancer Medicine, Division of Cancer Medicine, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan.
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Shichinohe T, Okushiba S, Morikawa T, Kitashiro S, Manase H, Kawarada Y, Sekido M, Yamamoto Y, Kondo S. Salvage of a massive esophago-tracheal fistula resulting from a stenting treatment. Dis Esophagus 2006; 19:299-304. [PMID: 16866865 DOI: 10.1111/j.1442-2050.2006.00582.x] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We report the successful surgical resolution of a case of massive esophago-tracheal fistula (ETF) caused by a stenting treatment for stricture of an esophago-gastric anastomosis. A 54-year-old man was admitted to our hospital due to serious pneumonia secondary to ETF. He had previously received esophagectomy and post-operative chemo-radiation therapy for esophageal cancer, followed by stenting treatments for a benign stricture of the esophago-gastric anastomosis. For surgical treatment of the resulting ETF, serial operations were required. The first operation, performed under percutaneous cardiopulmonary support, included removal of the stents followed by tracheotomy, were with the coverage of the tracheal defect achieved using both major pectoral muscle flaps. A salivary fistula was also generated and an enteral nutrition tube was placed. Six months after the first operation, a pedicled ileocolic interposition was performed in order to effect reconstruction of the digestive tube, with an additional microvascular anastomosis of the ileocolic and internal thoracic artery and vein. After the second operation, the patient's ability to ingest food was restored, and he was discharged from the hospital. Thus, ETF was successfully treated by successive surgical operations with delicate intra- and post-operative respiratory management.
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Affiliation(s)
- T Shichinohe
- Surgical Oncology, Division of Cancer Medicine, Hokkaido University Graduate School of Medicine, Sapporo, Japan.
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Okumura M, Masada M, Yoshida Y, Shintaku H, Hosoi M, Okada N, Konishi Y, Morikawa T, Miura K, Imanishi M. Decrease in tetrahydrobiopterin as a possible cause of nephropathy in type II diabetic rats. Kidney Int 2006; 70:471-6. [PMID: 16775605 DOI: 10.1038/sj.ki.5000431] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A decrease in renal synthesis of nitric oxide (NO) in the progression of diabetic nephropathy has been documented. As (6R)-5,6,7,8-tetrahydrobiopterin (BH4) is an essential cofactor of NO synthase, we investigated whether BH4 deficiency is involved in the pathogenesis of nephropathy. Ten-week-old Otsuka Long-Evans Tokushima Fatty (OLETF) rats were used as a type II diabetic model, and Long-Evans Tokushima Otsuka (LETO) rats as the healthy controls. OLETF rats were orally treated with BH4 (10 mg/kg daily) or with water from 10 to 61 weeks of age. In another experiment, OLETF rats were treated orally with a calcium channel blocker, benidipine (5 mg/kg daily), or with 0.3% carboxymethyl cellulose (nontreated) from 10 to 52 weeks of age. Proteinuria was observed periodically, and at the end of the study, BH4 level and GTP cyclohydrolase I (GTPCH) activity in the kidney were measured. Proteinuria was observed at 13 weeks of age in the OLETF rats, and deteriorated until 61 weeks of age. Supplemental BH4 reduced the proteinuria. At 52 weeks of age, GTPCH activity and the BH4 level were decreased in the plasma and kidneys of OLETF rats, whereas they were significantly higher in the benidipine group than in the nontreated group. Proteinuria was milder in the benidipine group than in the nontreated group, without a concomitant decrease in blood pressure. Histologically observed glomerulosclerosis was mild in the BH4 and benidipine groups. In type II diabetic rats, renal BH4 is considered to play a crucial role in the pathogenesis of diabetic nephropathy. Benidipine was found to preserve BH4 levels, suggesting therapeutic renoprotective effects.
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Affiliation(s)
- M Okumura
- Department of Internal Medicine, Osaka City General Hospital, Osaka, Japan
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45
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Takahashi O, Okushiba S, Kondo S, Morikawa T, Hirano S, Miyamoto M, Shichinohe T, Hara T, Kawarada Y, Saito K, Takeuchi M. Esophageal pemphigus vulgaris with carcinoma: postoperative steroid therapy based on pemphigus-related antibodies. Dis Esophagus 2005; 18:413-7. [PMID: 16336615 DOI: 10.1111/j.1442-2050.2005.00526.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A 71-year-old man had been treated as an outpatient for pemphigus vulgaris. Endoscopic examination disclosed an ulcerated lesion in the middle of the esophagus. A biopsy specimen was diagnosed pathologically as squamous cell carcinoma. At surgery, the esophageal mucosa beyond the resection margin appeared edematous and blistered. We carried out anastomosis with sutures rather than staples at the site where the epithelium was least damaged, to minimize likelihood of anastomotic breakdown from poor blood flow. Histopathologic examination of the resected specimen additionally showed blisters and acantholytic cells throughout the esophageal mucosa, so esophageal pemphigus was diagnosed in addition to carcinoma. The patient's general condition deteriorated from worsening of pemphigus. We initiated steroid therapy, making adjustments according to changes in titers of anti-intercellular bridge antibody and antibodies to the cell adhesion molecules (desmoglein 1 and 3). Fever and extensive blistering subsided dramatically, and the patient was discharged in good condition on hospital day 103. When performing esophagectomy in the presence of esophageal pemphigus, the anastomosis must be fashioned cautiously because any mechanical stress can abrade the friable edematous esophageal mucosa. While steroid therapy is known to be effective for pemphigus vulgaris, our findings indicate that in patients with postoperative deterioration of their general condition, marked improvement can be obtained by using antibody titers to guide timing and dose in steroid administration.
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Affiliation(s)
- O Takahashi
- Department of Surgical Oncology, Hokkaido University Graduate School of Medicine, Sapporo, Japan.
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Mega S, Miyamoto M, Ebihara Y, Takahashi R, Hase R, Li L, Shichinohe T, Kawarada Y, Uehara H, Kaneko H, Hashimoto H, Murakami Y, Itoh T, Morikawa T, Kondo S. Cyclin D1, E2F1 expression levels are associated with characteristics and prognosis of esophageal squamous cell carcinoma. Dis Esophagus 2005; 18:109-13. [PMID: 16053486 DOI: 10.1111/j.1442-2050.2005.00463.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [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: 12/11/2022]
Abstract
SUMMARY. We performed a multi-institutional analysis of E2F1 and cyclin D1 expression in cases of esophageal squamous cell carcinoma (ESCC). Cyclin D1 and E2F1 are involved in the transition of cell cycle phases and associated with tumor progression. However, no previous studies have concurrently analyzed combined E2F1 and cyclin D1 expression. The purpose of this study was to clarify the relationship of E2F1 and cyclin D1 in ESCC. We studied 122 patients with primary ESCC who underwent surgical tumor resection. Immunohistochemical analyses were performed for E2F1 and cyclin D1. A statistical analysis of immunohistochemistry results, clinicopathological features, and prognosis was performed. E2F1/cyclin D1 (-/-) tumors were present in 31 patients (25.4%) and correlated with reduced tumor progression. In these patients, pT (P=0.0001), pN (P<0.0001), p-Stage (P=0.0019), and survival rates were better than in patients who were positive for either E2F1 or cyclin D1 (P=0.0232). The expression of E2F1 and cyclin D1 is an indicator of tumor progression and prognosis in patients with ESCC. Combined analysis of E2F1 and cyclin D1 expression helps to determine the characteristics and prognosis of ESCC.
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Affiliation(s)
- S Mega
- Surgical Oncology, Cancer Medicine, Division of Cancer Medicine, Hokkaido University Graduate School of Medicine, Hokkaido, Japan.
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Ishii M, Iwai M, Harada Y, Morikawa T, Okanoue T, Kishikawa T, Tsuchihashi Y, Hanai K, Arizono N. A role of mast cells for hepatic fibrosis in primary sclerosing cholangitis. Hepatol Res 2005; 31:127-31. [PMID: 15777700 DOI: 10.1016/j.hepres.2005.01.007] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2004] [Revised: 12/17/2004] [Accepted: 01/19/2005] [Indexed: 02/08/2023]
Abstract
We encountered four patients with overt primary sclerosing cholangitis (PSC) which were histologically classified into stage 2 or 3. We examined the expression of stem cell factor (SCF), a ligand of c-kit, in injured bile ducts by immunohistochemistry, and mast cells were identified by immunohistochemistry using anti-HMCT (human mast cell tryptase) and anti-c-kit antibodies to clarify their relation with portal fibrosis coincident with destroyed bile ducts. SCF was detected in the epithelia of most bile ducts in PSC, and many HMCT- and c-kit-positive mast cells were found in portal tracts. Image analysis showed more significant numbers of c-kit-positive mast cells per area of portal tract in PSC than in chronic hepatitis C, and they might increase from stage 2 to 3. c-Kit-positive cells infiltrated into the portal tracts with SCF-positive destroyed bile ducts, and c-kit mast cells should be investigated in detail to make a role for portal fibrosis in PSC.
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Affiliation(s)
- M Ishii
- Department of Molecular Gastroenterology Hepatology, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto 602-0841, Japan
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Morikawa T, Kaji M, Ohtake S, Ueno T, Okushiba S, Kondo S, Katoh H. Video-assisted anatomic mediobasal segmentectomy of lung. Surg Endosc 2004; 17:1678. [PMID: 14703631 DOI: 10.1007/s00464-003-4217-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Although video-assisted thoracic surgery (VATS) is now widely accepted, pulmonary segmentectomy is rarely performed. We present a case series of patients undergoing this procedure. The first patient had multiple arteriovenous malformations of the right mediobasal segment and a leiomyoma in the bronchus of the mediobasal segment. The second patient had multiple pulmonary metastases from colon cancer, including one in the right mediobasal segment. The third patient had metastases in the right ventrobasal and mediobasal segments from a solitary fibrous tumor that originated in the contralateral diaphragm. In the first two patients, a solitary mediobasal segmentectomy was done. In the third patient, a combined ventrobasal and mediobasal bisegmentectomy was performed. There were no complications, and visualization was excellent. Because VATS provides such excellent exposure, mediobasal segmentectomy of the lung is feasible, even though this operation is not done as an open procedure.
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Affiliation(s)
- T Morikawa
- Department of Surgical Oncology, Division of Cancer Medicine, Hokkaido University Graduate School of Medicine, North 15, West 7, Kita-ku, Sapporo 060-8638, Japan.
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Morikawa T, Ohtake S, Kaji M, Okushiba S, Kondo S, Katoh H. An extrapleural approach to the anterior mediastinum using video-assisted thoracic surgery (VATS). Surg Endosc 2003; 17:1851. [PMID: 14959740 DOI: 10.1007/s00464-003-4511-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
A lateral extrapleural approach via video-assisted thoracic surgery (VATS) was used in a patient suspected of having a benign tumor of right lobe of the thymus. The patient previously had undergone lung resection for pulmonary tuberculosis, and the ipsilateral thorax had contracted and dense pleural adhesions were likely to exist. Lateral extrapleural approach by VATS was performed successfully and is an alternative to open surgery in highly selected patients with anterior mediastinal lesions.
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Affiliation(s)
- T Morikawa
- Surgical Oncology, Division of Cancer Medicine, Hokkaido University Graduate School of Medicine, North 15, West 7, Kita-ku, Sapporo 060-8638, Japan.
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50
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Murakami S, Miyamoto M, Hida Y, Cho Y, Fukunaga A, Oshikiri T, Kato K, Kurokawa T, Suzuoki M, Nakakubo Y, Hiraoka K, Itoh T, Shinohara T, Morikawa T, Okushiba O, Kondo S, Katoh H. Caveolin-I overexpression is a favourable prognostic factor for patients with extrahepatic bile duct carcinoma. Br J Cancer 2003; 88:1234-8. [PMID: 12737162] [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: 03/02/2023] Open
Abstract
Extrahepatic bile duct carcinoma (EBDC) is a malignancy well known for its poor prognosis. Some clinicopathological prognostic markers have been proposed, but genetic factors have not been well investigated. We have examined expression patterns of caveolin-1, which has been shown to function as a tumour suppressor in vitro, in EBDC using immunohistochemistry. Normal tissues adjacent to the tumour cells did not show immunoreactivity for caveolin-1. A total of 22 of the 60-carcinoma tissue samples (36.7%) studied were positive for caveolin-1. Caveolin-1 immunostaining negatively correlated with the patient's age and pathological T factor (pT) in a statistically significant manner. Multivariate analysis using Cox's proportional hazards model identified caveolin-1 expression as an independent positive prognostic factor. Thus, our study suggests that caveolin-1 expression may be a useful prognostic marker for EBDC.
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Affiliation(s)
- S Murakami
- Department of Surgical Oncology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
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