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Sekino H, Ishii S, Ishigame T, Ando T, Kawamoto N, Endo Y, Kuroiwa D, Ito H. Coil embolization of a celiac artery pseudoaneurysm under balloon-assisted flow control: A case report. Radiol Case Rep 2024; 19:2282-2285. [PMID: 38559651 PMCID: PMC10978447 DOI: 10.1016/j.radcr.2024.02.076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 02/16/2024] [Accepted: 02/22/2024] [Indexed: 04/04/2024] Open
Abstract
Coil migration can occur when coil embolization is used for treating pseudoaneurysms associated with large arteries. The double microcatheter technique is useful for preventing coil migration; the balloon catheter can reduce blood flow and active bleeding upon balloon inflation, and can also compress the bleeding point and arrest bleeding temporarily. We report a case describing the management of a pseudoaneurysm with coil embolization using double microcatheters and a balloon catheter to control blood flow and prevent coil migration. A 73-year-old male patient presented with a pseudoaneurysm of the celiac artery arising from the splenic artery stump following surgery. Coil embolization of the pseudoaneurysm using a double microcatheter embolization technique with a balloon catheter was considered. A balloon catheter was inserted into the celiac artery and active bleeding was temporarily arrested with the inflated balloon. First, a microcatheter was inserted into the balloon catheter, and another microcatheter was placed in the celiac artery. An electrical detachable coil was inserted into the proximal common hepatic artery just distal to the pseudoaneurysm. The second electrically detachable coil was inserted while the first coil remained attached. After detachment of the second coil, additional electrically detachable coils were inserted for similar embolization. The balloon was gradually deflated. Finally, the first coil was detached and we confirmed absence of the bleeding. Our case report demonstrated that a balloon catheter can control the flow vessels, and the double microcatheter embolization technique with a balloon catheter is useful for coil embolization in high-flow or large vessels.
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Affiliation(s)
- Hirofumi Sekino
- Department of Radiology and Nuclear Medicine, Fukushima Medical University, Fukushima, Japan
| | - Shiro Ishii
- Department of Radiology and Nuclear Medicine, Fukushima Medical University, Fukushima, Japan
| | - Teruhide Ishigame
- Department of Hepato-Biliary-Pancreatic and Transplant Surgery, Fukushima Medical University, Fukushima, Japan
| | - Tatsuya Ando
- Department of Radiology and Nuclear Medicine, Fukushima Medical University, Fukushima, Japan
| | - Natsumi Kawamoto
- Department of Radiology and Nuclear Medicine, Fukushima Medical University, Fukushima, Japan
| | - Yoshiki Endo
- Department of Radiology and Nuclear Medicine, Fukushima Medical University, Fukushima, Japan
| | - Daichi Kuroiwa
- Department of Radiology and Nuclear Medicine, Fukushima Medical University, Fukushima, Japan
| | - Hiroshi Ito
- Department of Radiology and Nuclear Medicine, Fukushima Medical University, Fukushima, Japan
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Yamakuni R, Ishikawa H, Ishii S, Kakamu T, Hara J, Sugawara S, Sekino H, Seino S, Fukushima K, Ito H. The Relationship Between Conventionally Obtained Serum-Based Liver Function Indices and Intravoxel Incoherent Motion Diffusion-Weighted Imaging and Magnetic Resonance Elastography in Patients With Hepatocellular Carcinoma. J Comput Assist Tomogr 2024; 48:194-199. [PMID: 37965744 DOI: 10.1097/rct.0000000000001561] [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: 11/16/2023]
Abstract
OBJECTIVES To investigate the relationship between conventionally obtained serum-based biochemical indices and intravoxel incoherent motion imaging (IVIM) parameters compared with magnetic resonance elastography (MRE). METHODS Patients with hepatocellular carcinoma who underwent ≥2 liver magnetic resonance imaging (MRI) scan, including IVIM and MRE, between 2017 and 2020 and biochemical testing within 1 week before or after MRI were included in this study. Biochemical tests were performed to determine the albumin-bilirubin (ALBI) score and modified ALBI (mALBI) grade, aspartate aminotransferase to platelet ratio index (APRI), and fibrosis-4 index (FIB-4). The diffusion coefficient ( D ), pseudo-diffusion coefficient ( D *), fractional volume occupied by flowing spins ( f ), and apparent diffusion coefficient were calculated for IVIM. The correlations between (1) the imaging parameters and biochemical indices and (2) the changes in mALBI grades and imaging parameters were evaluated. RESULTS This study included 98 scans of 40 patients (31 men; mean age, 67.7 years). The correlation analysis between the biochemical and IVIM parameters showed that ALBI score and D* had the best correlation ( r = -0.3731, P < 0.001), and the correlation was higher than that with MRE ( r = 0.3289, P < 0.001). However, among FIB-4, APRI, and MRI parameters, MRE outperformed IVIM parameters (MRE and FIB-4, r = 0.3775, P < 0.001; MRE and APRI, r = 0.4687, P < 0.001). There were significant differences in the changes in MRE among the 3 groups (improved, deteriorated, and unchanged mALBI groups) in the analysis of covariance ( P = 0.0434). There were no significant changes in IVIM. CONCLUSIONS Intravoxel incoherent motion imaging has the potential to develop into a more readily obtainable method of liver function assessment.
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Affiliation(s)
- Ryo Yamakuni
- From the Department of Radiology and Nuclear Medicine, Fukushima Medical University School of Medicine
| | | | - Shiro Ishii
- From the Department of Radiology and Nuclear Medicine, Fukushima Medical University School of Medicine
| | - Takeyasu Kakamu
- Department of Hygiene and Preventive Medicine, Fukushima Medical University School of Medicine, Fukushima City, Fukushima, Japan
| | - Junko Hara
- From the Department of Radiology and Nuclear Medicine, Fukushima Medical University School of Medicine
| | - Shigeyasu Sugawara
- From the Department of Radiology and Nuclear Medicine, Fukushima Medical University School of Medicine
| | | | - Shinya Seino
- Department of Radiology, Fukushima Medical University Hospital
| | - Kenji Fukushima
- From the Department of Radiology and Nuclear Medicine, Fukushima Medical University School of Medicine
| | - Hiroshi Ito
- From the Department of Radiology and Nuclear Medicine, Fukushima Medical University School of Medicine
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Ishii S, Yamakuni R, Tsuchiya T, Yamaki A, Hara J, Sugawara S, Sekino H, Fukushima K, Ito H. Incidence of Bowel Wall Swelling Induced by Iodine-Contrast Media and Its Association With Gastrointestinal Manifestation. J Comput Assist Tomogr 2024; 48:42-48. [PMID: 37531638 DOI: 10.1097/rct.0000000000001520] [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: 08/04/2023]
Abstract
PURPOSE The aim of this study was to investigate the incidence of bowel wall swelling after iodine-contrast media injection and its relationship with gastrointestinal symptoms. METHODS The incidence of bowel wall swelling was examined in 75 patients who showed adverse reactions to iodine-contrast media (AR[+] group) and 75 controls without adverse reactions (AR[-] group). Bowel wall swelling was identified if there was increased wall thickness on postcontrast computed tomography when compared with precontrast computed tomography. Swelling less than 2-fold of the original wall thickness was defined as grade 1 bowel angioedema, and swelling more than 2-fold was defined as grade 2. RESULTS The incidence of bowel wall swelling was significantly higher in the AR(+) group (26.6%) than in the AR(-) group (10.6%) ( P = 0.01). Grade 1 bowel wall swelling was observed in 12.0% and 10.7% of AR(+) and AR(-) groups, respectively, whereas grade 2 was observed in 14.7% and 0%, respectively. Bowel wall swelling was observed in the duodenum and jejunum but not in the stomach, ileum, or colon in any patient in either group. In the AR(+) group, nausea and/or vomiting was observed in 15 patients, among whom bowel wall swelling was observed in 9 patients (60%). The frequency of nausea and/or vomiting was significantly higher in the patients with bowel wall swelling (45.0%, 9/20) compared with those without (10.9%, 6/55). CONCLUSION Bowel wall swelling was more frequent and severe in patients with adverse reactions to iodine-contrast media than those without and was associated with nausea and/or vomiting.
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Affiliation(s)
- Shiro Ishii
- From the Department of Radiology, Fukushima Medical University, Fukushima, Japan
| | - Ryo Yamakuni
- From the Department of Radiology, Fukushima Medical University, Fukushima, Japan
| | - Takao Tsuchiya
- Department of Surgery, Iwase General Hospital, Sukagawa, Japan
| | - Anna Yamaki
- From the Department of Radiology, Fukushima Medical University, Fukushima, Japan
| | - Junko Hara
- From the Department of Radiology, Fukushima Medical University, Fukushima, Japan
| | - Shigeyasu Sugawara
- From the Department of Radiology, Fukushima Medical University, Fukushima, Japan
| | - Hirofumi Sekino
- From the Department of Radiology, Fukushima Medical University, Fukushima, Japan
| | - Kenji Fukushima
- From the Department of Radiology, Fukushima Medical University, Fukushima, Japan
| | - Hiroshi Ito
- From the Department of Radiology, Fukushima Medical University, Fukushima, Japan
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Isomatsu D, Sato A, Muto Y, Sato Y, Shimizu T, Misaka T, Kaneshiro T, Oikawa M, Kobayashi A, Yoshihisa A, Yamaki T, Kunii H, Nakazato K, Ishida T, Sekino H, Fukushima K, Ito H, Takeishi Y. Predictive Value of Aortic Valve Calcium Volume Measured by Computed Tomography for Paravalvular Leakage After Transcatheter Aortic Valve Implantation. Int Heart J 2024; 65:63-70. [PMID: 38296581 DOI: 10.1536/ihj.23-298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
Paravalvular leakage (PVL) is a complication of transcatheter aortic valve implantation (TAVI) for aortic stenosis, leading to an adverse prognosis. We investigated whether aortic valve calcium volume (Ca-Vol) measured by preoperative cardiac computed tomography had a predictive value for PVL after TAVI using a third-generation self-expandable valve.We retrospectively analyzed 59 consecutive patients who underwent TAVI using a third-generation self-expandable valve. We measured Ca-Vol in the aortic valve and each cusp (non-coronary cusp [NCC], right-coronary cusp [RCC], and left-coronary cusp [LCC]). We divided the patients into 2 groups: a PVL group (32.2%) and a non-PVL group (67.8%). Total Ca-Vol was significantly higher in the PVL group than in the non-PVL group (P < 0.001). Ca-Vol in each cusp was also significantly higher in the PVL group ([NCC] P < 0.001, [RCC] P = 0.001, [LCC] P < 0.001). Univariate logistic regression analysis for PVL indicated that the total and per-cusp Ca-Vols were predictors for PVL (total, odds ratio [OR] 4.0, P < 0.001; NCC, OR 12.5, P = 0.002; RCC, OR 16.0, P = 0.008; LCC, OR 44.5, P < 0.001).Receiver operating characteristic curve analysis of Ca-Vol for predicting PVL revealed the optimal cut-off values of Ca-Vol were 2.4 cm3 for the total, 0.74 cm3 for NCC, 0.73 cm3 for RCC, and 0.56 cm3 for LCC (area under the curve, 0.85, 0.79, 0.76, and 0.83, respectively).Preoperative total, NCC, RCC, and LCC calcium volumes were significant predictors for PVL after TAVI using third-generation self-expandable valves.
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Affiliation(s)
- Daisuke Isomatsu
- Department of Cardiovascular Medicine, Fukushima Medical University
| | - Akihiko Sato
- Department of Cardiovascular Medicine, Fukushima Medical University
| | - Yuuki Muto
- Department of Cardiovascular Medicine, Fukushima Medical University
| | - Yu Sato
- Department of Cardiovascular Medicine, Fukushima Medical University
| | - Takeshi Shimizu
- Department of Cardiovascular Medicine, Fukushima Medical University
| | - Tomofumi Misaka
- Department of Cardiovascular Medicine, Fukushima Medical University
| | | | - Masayoshi Oikawa
- Department of Cardiovascular Medicine, Fukushima Medical University
| | | | - Akiomi Yoshihisa
- Department of Cardiovascular Medicine, Fukushima Medical University
- Department of Clinical Laboratory Sciences, Fukushima Medical University School of Health Sciences
| | - Takayoshi Yamaki
- Department of Cardiovascular Medicine, Fukushima Medical University
| | - Hiroyuki Kunii
- Department of Cardiovascular Medicine, Ohara General Hospital
| | | | - Takafumi Ishida
- Department of Cardiovascular Medicine, Fukushima Medical University
| | - Hirofumi Sekino
- Department of Radiology and Nuclear Medicine, Fukushima Medical University
| | - Kenji Fukushima
- Department of Radiology and Nuclear Medicine, Fukushima Medical University
| | - Hiroshi Ito
- Department of Radiology and Nuclear Medicine, Fukushima Medical University
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Yamakuni R, Sekino H, Ikeda M, Endo Y, Ikeda M, Ishii S, Fukushima K, Murono S, Suzuki Y, Ito H. Complete response of glottic cancer to intra-arterial infusion chemotherapy combined with radiotherapy: A report of 4 cases. Radiol Case Rep 2023; 18:4514-4521. [PMID: 37876893 PMCID: PMC10590759 DOI: 10.1016/j.radcr.2023.09.058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 09/20/2023] [Indexed: 10/26/2023] Open
Abstract
Surgical resection is recommended for advanced-stage, resectable glottic cancer. However, total laryngectomy results in the loss of vocal function and reduces patients' quality of life. At our institution, patients with cT3N0M0 stage III resectable glottic cancer who wish to preserve their larynx are treated with super-selective cisplatin infusion with concomitant radiotherapy (RADPLAT) to improve local control over systemic chemotherapy. Herein, we present 4 patients with glottic cancer who underwent biweekly intra-arterial infusion chemotherapy combined with radiation therapy 3 times. For intra-arterial infusion chemotherapy, 100 mg cis-diaminodichloroplatinum was infused into the superior thyroid artery, including the superior laryngeal artery branch. Thereafter, intensity-modulated radiation therapy was administered at doses of 70 Gy in 35 fractions for 3 patients and 66 Gy in 33 fractions for 1 patient. These patients showed complete response after chemoradiotherapy with no recurrence or metastases during the follow-up period to date (mean follow-up period: 56 months, range: 39-76 months).
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Affiliation(s)
- Ryo Yamakuni
- Department of Radiology and Nuclear Medicine, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Hirofumi Sekino
- Department of Radiology and Nuclear Medicine, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Masakazu Ikeda
- Department of Otorhinolaryngology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Yoshiki Endo
- Department of Radiology and Nuclear Medicine, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Masamitsu Ikeda
- Department of Radiology, Fukushima Medical University Hospital, Fukushima, Japan
| | - Shiro Ishii
- Department of Radiology and Nuclear Medicine, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Kenji Fukushima
- Department of Radiology and Nuclear Medicine, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Shigeyuki Murono
- Department of Otorhinolaryngology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Yoshiyuki Suzuki
- Department of Radiation Oncology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Hiroshi Ito
- Department of Radiology and Nuclear Medicine, Fukushima Medical University School of Medicine, Fukushima, Japan
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Fukushima K, Endo K, Yamakuni R, Kiko T, Sekino H, Kikori K, Ukon N, Ishii S, Yamaki T, Ito H, Takeishi Y. Simultaneous assessment of left ventricular mechanical dyssynchrony using integrated 13N-ammonia PETMR system: direct comparison of PET phase analysis and MR feature tracking. J Nucl Cardiol 2023; 30:1947-1958. [PMID: 36918456 DOI: 10.1007/s12350-023-03225-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 01/30/2023] [Indexed: 03/16/2023]
Abstract
BACKGROUND To compare phase analysis with positron emission tomography (PA) and magnetic resonance feature tracking derived myocardial strain (FT) for left ventricular (LV) mechanical dyssynchrony using PETMR system in patients with ischemic heart disease. METHODS AND RESULTS Patients who underwent rest-pharmacological stress 13N ammonia PETMR were enrolled. Histogram bandwidth (BW) and phase standard deviation (PSD) were compared to global longitudinal, long axis radial, short axis circumferential, and radial strain (GLS, GRS, SA Circ, and SA Rad) obtained from FT. LV dyssynchrony index (SDI) derived from PA and FT were compared. BW and PSD showed significant correlations with FT (a Pearson's coefficient r = 0.64, P < .0001, and r = 0.51, P < .0001 for SA Circ; r = 0.67, P < .0001, and r = 0.74, P < .0001 for GLS; r = - 0.60, P < .0001, r = - 0.61, P < .0001 for SA Rad; r = - 0.62, P < .0001, and r = - 0.68, P < .0001 for GRS, respectively). Bland-Altman plots for SDI showed a preferable agreement (95% limit of agreement - 0.12 to 0.075, - 0.20 to 0.098, - 0.38 to 0.077, and - 0.37 to 0.032; bias 0.0068 ± 0.056, 0.026 ± 0.068, 0.11 ± 0.088, and 0.13 ± 0.079 for SA Circ, SA Rad, GLS, and GRS, respectively). CONCLUSION In simultaneous acquisition using PETMR, comparison of PET phase analysis and MR strain showed a good correlation.
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Affiliation(s)
- Kenji Fukushima
- Department of Radiology and Nuclear Medicine, Fukushima Medical University, Hikarigaoka-1, Fukushima, Japan.
- Department of Cardiovascular Medicine, Fukushima Medical University, Fukushima, Japan.
| | - Keiichiro Endo
- Department of Cardiovascular Medicine, Fukushima Medical University, Fukushima, Japan
| | - Ryo Yamakuni
- Department of Radiology and Nuclear Medicine, Fukushima Medical University, Hikarigaoka-1, Fukushima, Japan
| | - Takatoyo Kiko
- Department of Cardiovascular Medicine, Fukushima Medical University, Fukushima, Japan
| | - Hirofumi Sekino
- Department of Radiology and Nuclear Medicine, Fukushima Medical University, Hikarigaoka-1, Fukushima, Japan
| | - Katsuyuki Kikori
- Department of Radiology, Fukushima Medical University, Fukushima, Japan
| | - Naoyuki Ukon
- Advanced Clinical Research Center, Fukushima Medical University, Fukushima, Japan
| | - Shiro Ishii
- Department of Radiology and Nuclear Medicine, Fukushima Medical University, Hikarigaoka-1, Fukushima, Japan
| | - Takayoshi Yamaki
- Department of Cardiovascular Medicine, Fukushima Medical University, Fukushima, Japan
| | - Hiroshi Ito
- Department of Radiology and Nuclear Medicine, Fukushima Medical University, Hikarigaoka-1, Fukushima, Japan
| | - Yasuchika Takeishi
- Department of Cardiovascular Medicine, Fukushima Medical University, Fukushima, Japan
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Yamakuni R, Sekino H, Saito M, Kakamu T, Takahashi K, Hara J, Suenaga H, Ishii S, Fukushima K, Ito H. Prediction of Anemia From Cerebral Venous Sinus Attenuation on Deep-Learning Reconstructed Brain Computed Tomography Images. J Comput Assist Tomogr 2023; 47:796-805. [PMID: 37707411 DOI: 10.1097/rct.0000000000001479] [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: 06/03/2023]
Abstract
OBJECTIVE The aim of the study is to evaluate whether the prediction of anemia is possible using quantitative analyses of unenhanced cranial computed tomography (CT) with deep learning reconstruction (DLR) compared with conventional methods. METHODS This cross-sectional retrospective study included 116 participants (76 males; mean age, 66.7) who had hemoglobin (Hb) levels obtained within 24 hours of unenhanced cranial CT, which included 2 reconstruction methods: DLR and hybrid iterative reconstruction. Regions of interest were the confluence of sinuses (CoS) and the right and left transverse sinuses. In addition, edge rise distance of cerebrospinal fluid and venous was measured. RESULTS Spearman rank correlation coefficient demonstrated a positive association between Hb levels and sinus attenuation values. Among these, the CoS in DLR had the best correlation ( r = 0.703, P < 0.001). For the prediction of anemia (Hb < 11 g/dL), the area under the curve of CoS in DLR (area under the curve = 0.874; 95% confidence interval, 0.798-0.949; P < 0.001) was the highest; however, there were no significant differences among reconstruction method and sinus. The attenuation values of DLR were significantly higher than those of hybrid iterative reconstruction ( P < 0.001, paired t test), and the differences between the 2 methods were 4.1 (standard deviation [SD], 1.6) for CoS, 5.2 (SD, 2.2) for right transverse sinuses, and 5.8 (SD, 2.4) for left transverse sinuses. The signal-to-noise ratio ( P < 0.001, paired t test) and edge rise distance ( P < 0.001, Wilcoxon signed rank test) of DLR was significantly higher. CONCLUSIONS Higher CT attenuation values should be considered for predicting anemia based on brain DLR images.
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Affiliation(s)
- Ryo Yamakuni
- From the Department of Radiology and Nuclear Medicine, Fukushima Medical University School of Medicine
| | - Hirofumi Sekino
- From the Department of Radiology and Nuclear Medicine, Fukushima Medical University School of Medicine
| | - Masaki Saito
- Department of Radiology, Fukushima Medical University Hospital
| | - Takeyasu Kakamu
- Department of Hygiene and Preventive Medicine, Fukushima Medical University School of Medicine, Fukushima, Japan
| | | | - Junko Hara
- From the Department of Radiology and Nuclear Medicine, Fukushima Medical University School of Medicine
| | - Hiroki Suenaga
- From the Department of Radiology and Nuclear Medicine, Fukushima Medical University School of Medicine
| | - Shiro Ishii
- From the Department of Radiology and Nuclear Medicine, Fukushima Medical University School of Medicine
| | - Kenji Fukushima
- From the Department of Radiology and Nuclear Medicine, Fukushima Medical University School of Medicine
| | - Hiroshi Ito
- From the Department of Radiology and Nuclear Medicine, Fukushima Medical University School of Medicine
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Sekino H, Ishii S, Yamakuni R, Suenaga H, Kuroiwa D, Fukushima K, Ito H. Conventional versus aspiration-type needles in CT-guided biopsy for chest pathologies/lesions: A comparative study. Curr Med Imaging 2023:CMIR-EPUB-131910. [PMID: 37202894 DOI: 10.2174/1573405620666230518143323] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 03/20/2023] [Accepted: 03/21/2023] [Indexed: 05/20/2023]
Abstract
BACKGROUND Larger sample volume can be obtained in one needle pass using an aspiration-type semi-automatic cutting biopsy needle (STARCUT® aspiration-type needle; TSK Laboratory, Tochigi, Japan) in comparison to the conventional semi-automatic cutting biopsy needle. OBJECTIVE To evaluate and compare the safety and effectiveness of aspiration-type semi-automatic cutting biopsy needles and non-aspiration-type biopsy needles when performing computed tomography (CT)-guided core needle biopsies (CNBs). METHODS A total of 106 patients underwent CT-guided CNB for chest lesions between June 2013 and March 2020 at our hospital. Non-aspiration-type cutting biopsy needles were used in 47 of these patients, while aspiration-type needles were used in the remaining 59 patients. All needles used were 18- or 20-gauge biopsy needles. Parameters, like forced expiratory volume in 1-second percent (FEV1.0%), the maximum size of the target lesion, puncture pathway distance in the lung, number of needle passes, procedure time, diagnostic accuracy, and incidence of complications, were measured. Comparisons were made between the needle-type groups. RESULTS No significant difference was observed in terms of diagnostic accuracy. However, the procedure time was shorter and a lesser number of needle passes were required with the aspiration-type cutting biopsy needle compared to the non-aspiration-type needle. Pneumothorax and pulmonary hemorrhage were the complications encountered, however, their incidence was not significantly different between the two types of needles. CONCLUSIONS The aspiration-type semi-automatic cutting biopsy needle had similar diagnostic accuracy as the non-aspiration-type biopsy needle, with added advantages of a lesser number of needle passes and shorter procedure time.
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Affiliation(s)
- Hirofumi Sekino
- Department of Radiology and Nuclear Medicine, Fukushima Medical University, Fukushima, Japan
| | - Shiro Ishii
- Department of Radiology and Nuclear Medicine, Fukushima Medical University, Fukushima, Japan
| | - Ryo Yamakuni
- Department of Radiology and Nuclear Medicine, Fukushima Medical University, Fukushima, Japan
| | - Hiroki Suenaga
- Department of Radiology and Nuclear Medicine, Fukushima Medical University, Fukushima, Japan
| | - Daichi Kuroiwa
- Department of Radiology and Nuclear Medicine, Fukushima Medical University, Fukushima, Japan
| | - Kenji Fukushima
- Department of Radiology and Nuclear Medicine, Fukushima Medical University, Fukushima, Japan
| | - Hiroshi Ito
- Department of Radiology and Nuclear Medicine, Fukushima Medical University, Fukushima, Japan
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Yamakuni R, Ishii S, Yamada S, Hara J, Suenaga H, Sugawara S, Sekino H, Yamaki T, Ishida K, Hashimoto Y, Ito H. Different prognostic outcomes in two cases of FDG-PET/CT-Positive and -negative cardiac angiosarcoma. Fukushima J Med Sci 2023; 69:45-49. [PMID: 36775315 PMCID: PMC10122971 DOI: 10.5387/fms.2022-13] [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] [Indexed: 02/13/2023] Open
Abstract
Cardiac angiosarcoma is a rare malignant tumor with a poor prognosis, characterized by the high uptake of 18F-fluorodeoxyglucose (FDG). This case report presents two cases of cardiac angiosarcoma with a marked difference in FDG uptake and prognosis.Case Summary:Case 1: A 40-year-old male presented with syncope. Ultrasound echocardiography demonstrated a cardiac tumor with a high uptake of 18F-FDG (maximum standardized uptake value=9.2). The patient underwent heart catheterization and tumor biopsy. The pathological result was high-grade angiosarcoma, and the MIB-1(Ki-67) proliferation index was approximately 20%. Systemic chemotherapy was administered; however, the patient died 2 years and 5 months after disease onset.Case 2: A 65-year-old female had a right atrial tumor incidentally diagnosed during routine ultrasound echocardiography. The tumor exhibited a low uptake of 18F-FDG (maximum standardized uptake value=1.8). Open heart surgery was performed, and the tumor was completely resected. Histological analysis revealed low-grade angiosarcoma, and the MIB-1(Ki-67) proliferation index was less than 5%. The patient was followed-up and had not relapsed 2 years after surgery.Conclusion: 18F-FDG uptake may reflect pathological tumor grade and prognosis in cardiac angiosarcoma.
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Affiliation(s)
- Ryo Yamakuni
- Department of Radiology and Nuclear Medicine, Fukushima Medical University
| | - Shiro Ishii
- Department of Radiology and Nuclear Medicine, Fukushima Medical University
| | - Shoki Yamada
- Department of Diagnostic Pathology, Fukushima Medical University
| | - Junko Hara
- Department of Radiology and Nuclear Medicine, Fukushima Medical University
| | - Hiroki Suenaga
- Department of Radiology and Nuclear Medicine, Fukushima Medical University
| | - Shigeyasu Sugawara
- Department of Radiology and Nuclear Medicine, Fukushima Medical University
| | - Hirofumi Sekino
- Department of Radiology and Nuclear Medicine, Fukushima Medical University
| | - Takayoshi Yamaki
- Department of Cardiovascular Medicine, Fukushima Medical University
| | - Keiichi Ishida
- Department of Cardiovascular Surgery, Fukushima Medical University
| | - Yuko Hashimoto
- Department of Diagnostic Pathology, Fukushima Medical University
| | - Hiroshi Ito
- Department of Radiology and Nuclear Medicine, Fukushima Medical University
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Yamakuni R, Ishikawa H, Hasegawa O, Sekino H, Ishii S, Otani K, Ito H. Cauda equina movement during the Valsalva maneuver in two patients with Lumbar spinal canal stenosis. Fukushima J Med Sci 2022; 68:135-141. [PMID: 35979579 PMCID: PMC9493334 DOI: 10.5387/fms.2022-12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Lumbar spinal canal stenosis (LSS) is a common spinal disorder among older people. Some LSS patients say that their pain worsens when they lift heavy objects. The Valsalva maneuver is the optimal breathing pattern for producing maximal force. Herein, we present two cases of LSS where the movement of the cauda equina was observed during the Valsalva maneuver.
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Affiliation(s)
- Ryo Yamakuni
- Department of Radiology and Nuclear Medicine, Fukushima Medical University School of Medicine
| | | | - Osamu Hasegawa
- Department of Radiology and Nuclear Medicine, Fukushima Medical University School of Medicine
| | - Hirofumi Sekino
- Department of Radiology and Nuclear Medicine, Fukushima Medical University School of Medicine
| | - Shiro Ishii
- Department of Radiology and Nuclear Medicine, Fukushima Medical University School of Medicine
| | - Koji Otani
- Department of Orthopedic Surgery, Fukushima Medical University School of Medicine
| | - Hiroshi Ito
- Department of Radiology and Nuclear Medicine, Fukushima Medical University School of Medicine
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11
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Ishii S, Sugawara S, Yamakuni R, Sekino H, Ito H. Hypertrophic Pachymeningitis Demonstrated by Whole-Body 67Ga Scintigraphy. Clin Nucl Med 2022; 47:e149-e151. [PMID: 34284475 DOI: 10.1097/rlu.0000000000003833] [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: 11/26/2022]
Abstract
ABSTRACT Hypertrophic pachymeningitis is a rare inflammatory process characterized by thickening of the dura mater that can be idiopathic or secondary to a variety of conditions such as ANCA-related vasculitis, IgG4-related disease, Sjögren syndrome, rheumatoid arthritis, sarcoidosis, and infections. It can cause various neurological alterations such as headache, cranial nerve disorder, cerebellar disorder, sensory impairment, and weakness. Brain MRI is useful for imaging diagnosis of hypertrophic pachymeningitis, showing focal thickening and enhancement of the dura mater. Here we report 4 cases of idiopathic hypertrophic pachymeningitis where 67Ga clearly accumulated in the dura mater.
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Affiliation(s)
- Shiro Ishii
- From the Department of Radiology, Fukushima Medical University, Fukushima, Japan
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12
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Sekino H, Ishii S, Sato H, Nomoto M, Kawana S, Suenaga H, Kuroiwa D, Ito H. Three cases of organized hematoma of the maxillary sinus in patients who underwent preoperative arterial embolization. Radiol Case Rep 2021; 16:3945-3949. [PMID: 34712374 PMCID: PMC8529391 DOI: 10.1016/j.radcr.2021.09.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 09/11/2021] [Accepted: 09/16/2021] [Indexed: 01/03/2023] Open
Abstract
Organized hematoma (OH) is benign tumor in the maxillary sinus. The standard treatment for OH is complete surgical resection, however massive bleeding can occur during the procedure, albeit rarely. Some reports have suggested preoperative embolization is useful for reducing the volume of intraoperative bleeding. We report 3 cases of OH in the maxillary performed preoperative embolization. We identified the feeding arteries by angiography or IVR-CT, and we embolized them using Gelatin sponge particles. The embolized artery was the maxillary artery or both the maxillary and the facial artery. There were no major complications as a result of embolization. The mean fluoroscopy time was 35.8 minutes, and the mean fluoroscopy dose was 329.3 mGy. Tumor resection was performed the next day after arterial embolization. The mean bleeding volume for surgery was 383.3 ml, and the mean operative time was 194 minutes. No recurrence was observed in any of the cases over a 4-year follow-up period. We considered that it is possible that preoperative artery embolization is useful for decreasing intraoperative bleeding volume. Although the methods and usefulness of embolization await future reports, it is a technique that should be considered preoperatively because of its potential to prevent massive bleeding.
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Affiliation(s)
- Hirofumi Sekino
- Department of Radiology and Nuclear Medicine, Fukushima Medical University, Fukushima, Japan,Corresponding author. Hirofumi Sekino.
| | - Shiro Ishii
- Department of Radiology and Nuclear Medicine, Fukushima Medical University, Fukushima, Japan
| | - Hirohito Sato
- Department of Otorhinolaryngology, Fukushima Medical University, Fukushima, Japan
| | - Mika Nomoto
- Department of Otorhinolaryngology, Fukushima Medical University, Fukushima, Japan
| | - Satoshi Kawana
- Department of Diagnostic Pathology, Fukushima Medical University, Fukushima, Japan
| | - Hiroki Suenaga
- Department of Radiology and Nuclear Medicine, Fukushima Medical University, Fukushima, Japan
| | - Daichi Kuroiwa
- Department of Radiology and Nuclear Medicine, Fukushima Medical University, Fukushima, Japan
| | - Hiroshi Ito
- Department of Radiology and Nuclear Medicine, Fukushima Medical University, Fukushima, Japan
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13
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Imai Y, Nihei M, Abe K, Sasaki S, Minami N, Munakata M, Yumita S, Onoda Y, Sekino H, Yamakoshi K, Yoshinaga K. A Finger Volume-Oscillometric Device for Monitoring Ambulatory Blood Pressure: Laboratory and Clinical Evaluations. ACTA ACUST UNITED AC 2018. [DOI: 10.1080/07300077.1987.11978712] [Citation(s) in RCA: 1] [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: 10/17/2022]
Affiliation(s)
- Y. Imai
- Department of Medicine, Tohoku University, Sapporo, Japan
| | - M. Nihei
- Department of Medicine, Tohoku University, Sapporo, Japan
| | - K. Abe
- Department of Medicine, Tohoku University, Sapporo, Japan
| | - S. Sasaki
- Department of Medicine, Tohoku University, Sapporo, Japan
| | - N. Minami
- Department of Medicine, Tohoku University, Sapporo, Japan
| | - M. Munakata
- Department of Medicine, Tohoku University, Sapporo, Japan
| | - S. Yumita
- Department of Medicine, Tohoku University, Sapporo, Japan
| | - Y. Onoda
- Department of Medicine, Tohoku University, Sapporo, Japan
| | - H. Sekino
- Kohjinkai Central Hospital, Sendai, Sapporo, Japan
| | - K. Yamakoshi
- Research Institute of Applied Electricity, Hokkaido University, Sapporo, Japan
| | - K. Yoshinaga
- Department of Medicine, Tohoku University, Sapporo, Japan
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14
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Hayashi M, Kawana S, Sekino H, Abe K, Matsuoka N, Kashiwagi M, Okai K, Kanno Y, Takahashi A, Ito H, Hashimoto Y, Ohira H. Contrast uptake in primary hepatic angiosarcoma on gadolinium-ethoxybenzyl-diethylenetriamine pentaacetic acid-enhanced magnetic resonance imaging in the hepatobiliary phase. World J Hepatol 2018; 10:166-171. [PMID: 29399290 PMCID: PMC5787680 DOI: 10.4254/wjh.v10.i1.166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 11/06/2017] [Accepted: 12/29/2017] [Indexed: 02/06/2023] Open
Abstract
Primary hepatic angiosarcoma is the most common malignant mesenchymal tumor of the liver. It has a poor prognosis and various appearances on magnetic resonance (MR) images. We report a case of hepatic angiosarcoma with a characteristic appearance on gadolinium-ethoxybenzyl-diethylenetriamine pentaacetic acid (Gd-EOB-DTPA)-enhanced MR imaging in the hepatobiliary phase. A 72-year-old man was admitted with a complaint of abdominal pain. Gd-EOB-DTPA-enhanced MR imaging revealed a liver tumor that showed slight hyperintensity in the hepatobiliary phase. These findings suggested Gd-EOB-DTPA uptake in the tumor. An autopsy revealed the solid proliferation and sinusoidal spreading of hepatic angiosarcoma cells. Immunohistochemistry indicated that the tumor was negative for OATP1B3. Gd-EOB-DTPA uptake in the liver tumor in the hepatobiliary phase suggested sinusoidal tumor invasion with residual normal hepatocytes.
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Affiliation(s)
- Manabu Hayashi
- Department of Gastroenterology, Fukushima Medical University School of Medicine, Fukushima 960-1295, Japan
| | - Satoshi Kawana
- Department of Diagnostic Pathology, Fukushima Medical University School of Medicine, Fukushima 960-1295, Japan
| | - Hirofumi Sekino
- Department of Radiology, Fukushima Medical University School of Medicine, Fukushima 960-1295, Japan
| | - Kazumichi Abe
- Department of Gastroenterology, Fukushima Medical University School of Medicine, Fukushima 960-1295, Japan
| | - Naoki Matsuoka
- Department of Gastroenterology, Fukushima Medical University School of Medicine, Fukushima 960-1295, Japan
| | - Masahito Kashiwagi
- Department of Gastroenterology, Fukushima Medical University School of Medicine, Fukushima 960-1295, Japan
| | - Ken Okai
- Department of Gastroenterology, Fukushima Medical University School of Medicine, Fukushima 960-1295, Japan
| | - Yukiko Kanno
- Department of Gastroenterology, Fukushima Medical University School of Medicine, Fukushima 960-1295, Japan
| | - Atsushi Takahashi
- Department of Gastroenterology, Fukushima Medical University School of Medicine, Fukushima 960-1295, Japan
| | - Hiroshi Ito
- Department of Radiology, Fukushima Medical University School of Medicine, Fukushima 960-1295, Japan
| | - Yuko Hashimoto
- Department of Diagnostic Pathology, Fukushima Medical University School of Medicine, Fukushima 960-1295, Japan
| | - Hiromasa Ohira
- Department of Gastroenterology, Fukushima Medical University School of Medicine, Fukushima 960-1295, Japan
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15
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Soeda S, Hiraiwa T, Takata M, Kamo N, Sekino H, Nomura S, Kojima M, Kyozuka H, Ozeki T, Ishii S, Tameda T, Asano K, Miyazaki M, Takahashi T, Watanabe T, Taki Y, Fujimori K. Unique Learning System for Uterine Artery Embolization for Symptomatic Myoma and Adenomyosis for Obstetrician-Gynecologists in Cooperation with Interventional Radiologists: Evaluation of UAE From the Point of View of Gynecologists Who Perform UAE. J Minim Invasive Gynecol 2017; 25:84-92. [PMID: 28807810 DOI: 10.1016/j.jmig.2017.08.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [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: 05/15/2017] [Revised: 07/15/2017] [Accepted: 08/05/2017] [Indexed: 11/24/2022]
Abstract
STUDY OBJECTIVE To evaluate a unique learning system for uterine artery embolization (UAE) and examine its feasibility and clinical outcomes for the treatment of symptomatic uterine leiomyomas and adenomyosis when performed by obstetrician-gynecologists in cooperation with interventional radiologists (IVRs). DESIGN Retrospective study (Canadian Task Force classification II-2). SETTING University hospital. PATIENTS One hundred seventy-three patients who underwent UAE for symptomatic leiomyomas and adenomyosis. INTERVENTIONS We examined the medical records of patients who underwent UAE for symptomatic uterine leiomyomas and adenomyosis at our department between 2003 and 2012 using our learning system for UAE for obstetrician-gynecologists in cooperation with IVRs. The charts of all patients were reviewed, and data on etiologic factors, past medical history of leiomyomas and adenomyosis, symptoms, details of UAE, and clinical outcomes after UAE were extracted. MEASUREMENTS AND MAIN RESULTS A total of 173 patients who underwent 177 UAEs were identified, including 4 patients who underwent embolization twice because of primary treatment failure or symptom recurrence. During the study period, 2 gynecologists successfully acquired endovascular skills. The technical success rate was 97.7% (174 of 177). The duration of fluoroscopy in procedures performed by obstetrician-gynecologists who acquired endovascular skills was not significantly different from that in procedures performed by IVRs at our institution; however, this duration was significantly longer in procedures performed by obstetrician-gynecologists who did not have sufficient experience with our learning protocol for UAE because of inadequate live observation of UAEs performed by skilled IVRs. Complications that necessitated discontinuation of the procedure occurred in 2.3% of cases (4 of 177). The clinical outcomes were similar to those reported in previous studies. Adverse events after UAE included myeloid passages in 7.0% (11 of 158), infections in 2.5% (4 of 158), vaginal discharge in 2.5% of patients with leiomyomas (4 of 158), and vaginal discharge in 7.1% of patients with adenomyosis (1 of 14). All the adverse events were adequately treated by the obstetrician-gynecologists themselves. The timing of hysterectomy due to complications or recurrence of symptoms after UAE varied widely. CONCLUSION UAE performed by obstetrician-gynecologists in cooperation with radiologists can be achieved safely and successfully with acceptable clinical outcomes. Live observation of the procedure performed by skilled IVRs is essential to improving the skills and reducing the fluoroscopic time of obstetrician-gynecologists.
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Affiliation(s)
- Shu Soeda
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, Fukushima, Japan.
| | - Tsuyoshi Hiraiwa
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Megumi Takata
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Norihito Kamo
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Hirofumi Sekino
- Department of Radiology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Shinji Nomura
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Manabu Kojima
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Hyo Kyozuka
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Takeharu Ozeki
- Department of Obstetrics and Gynecology, Takeda General Hospital, Wakamatsu, Japan
| | - Shiro Ishii
- Department of Radiology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Tadanobu Tameda
- Department of Radiology, Ota Nishinouchi General Hospital, Iwaki, Japan
| | - Kimisato Asano
- Department of Obstetrics and Gynecology, Higashi-Fuchu Hospital, Tokyo, Japan
| | - Makoto Miyazaki
- Department of Radiation Health Management, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Toshifumi Takahashi
- Fukushima Medical Center for Children and Women, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Takafumi Watanabe
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Yasunori Taki
- Department of Radiology, Chofu-keijinkai Clinic, Tokyo, Japan
| | - Keiya Fujimori
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, Fukushima, Japan
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16
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Taguchi Y, Hoshikawa Y, Tanaka K, Miyakita Y, Morishima H, Sekino H. Contralateral transcondylar approach for aneurysms of the posterior inferior cerebellar artery-vertebral artery complex. J Clin Neurosci 2012; 3:156-61. [PMID: 18638859 DOI: 10.1016/s0967-5868(96)90010-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/1994] [Accepted: 11/18/1994] [Indexed: 10/26/2022]
Abstract
We report a patient with an aneurysm of the left vertebral artery (VA)-posterior inferior cerebellar artery (PICA) complex that was treated successfully via a contralateral transcondylar approach. The aneurysm was small, pointed laterally to the right, and was located across the midline just above the level of the foramen magnum. This unusual location required special consideration during diagnostic evaluation and surgical planning. To simulate the operative view, the patient's head was turned 45 degrees. This extreme oblique view offered useful information with respect to the choice of side from which the surgical approach should be made. Removal of the posteromedial part of the occipital condyle allowed us to clip the aneurysmal neck without difficulty although the surgical approach was made on the side contralateral to the parent artery. We conclude that the contralateral approach for VA-PICA aneurysms should be considered when aneurysms cross the midline, and that extradural removal of the basal bony structures, including the occipital condyle, can provide a wide wirking space without excessive retraction on the brain stem.
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Affiliation(s)
- Y Taguchi
- Department of Neurosurgery, St Marianna University School of Medicine, Kawasaki, Kanagawa, Japan
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17
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Nakamura H, Uzura M, Uchida K, Nakayama H, Furuya Y, Hayashi T, Sekino H, Ominato M, Owada S. Effects of edaravone on experimental brain injury in view of free radical reaction. Acta Neurochir Suppl 2004; 86:309-11. [PMID: 14753459 DOI: 10.1007/978-3-7091-0651-8_67] [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] [Subscribe] [Scholar Register] [Indexed: 04/28/2023]
Abstract
The purpose of this study is to clarify the influence of a novel free radical scavenger edaravone on experimental brain injury. Male Wistar rats were anesthetized with 1-2% halothane. Brain injury was produced using a controlled cortical impact injury device. Experimental rats were divided into 2 groups. In the edaravone group, edaravone (3 mg/kg) was twice administered intravenously for 30 minutes. In the saline group, saline solution was administered in the same way. This administration of edaravone or saline solution made it possible to evaluate the relative effects of edaravone by assessment of free radical reaction and water content. As a result, the level of oxygen free radicals at 50 minutes after brain injury was significantly lower in the edaravone group than in the saline group. The water content in the injured brain at 180 minutes was significantly lower in the edaravone group than in the saline group. Therefore, we propose that edaravone may be effective for treatment in head injury.
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Affiliation(s)
- H Nakamura
- Department of Neurosurgery, St. Marianna University School of Medicine, Kanagawa, Japan.
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18
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19
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Kato K, Iwai S, Kumasaka K, Horikoshi A, Inada S, Inamatsu T, Ono Y, Nishiya H, Hanatani Y, Narita T, Sekino H, Hayashi I. Survey of antibiotic resistance in Pseudomonas aeruginosa by The Tokyo Johoku Association of Pseudomonas Studies. J Infect Chemother 2001; 7:258-62. [PMID: 11810595 DOI: 10.1007/s101560170024] [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] [Received: 10/27/2000] [Accepted: 04/10/2001] [Indexed: 10/27/2022]
Abstract
Pseudomonas aeruginosa resistance (minimum inhibitory concentration [MIC], > or =16 microg/ml defined as resistant) to meropenem, imipenem, panipenem, piperacillin, ceftazidime, cefozopran, cefoperazone, sulbactam/cefoperazone, amikacin, and tobramycin, as well as cross-resistance profiles, were investigated in P. aeruginosa strains isolated at eight hospitals in the Johoku area, Tokyo, during November 1998. Overall, 8.3% of isolates were imipenem-resistant and 4.6% were ceftazidime-resistant. However, the incidence of antibiotic-resistant P. aeruginosa was distinctly different at each hospital. P. aeruginosa resistance to imipenem ranged from (MIC) 1 to 64 microg/ml (MIC90 32 microg/ml), and its resistance to ceftazidime ranged from 2 to more than 128 microg/ml (MIC90, 64 microg/ml). Meropenem (MIC range, < or =0.25 to 16 microg/ml) was more active than panipenem (MIC range, 2 to 64 microg/ml). Cefozopran was more active than piperacillin, cefoperazone, or sulbactam/cefoperazone, but many strains were resistant to cefoperazone (17/57). Our analysis found cross-resistance to many beta-lactams, but the degree of cross-resistance was very variable.
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Affiliation(s)
- K Kato
- Third Department of Surgery, Nihon University School of Medicine, 30-1 Oyaguchi, Itabashi-ku, Tokyo 173-8610, Japan.
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20
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Kato J, Aihara A, Kikuya M, Matsubara M, Ohta M, Ohkubo T, Tsuji I, Sekino H, Meguro T, Imai Y. Risk factors and predictors of coronary arterial lesions in Japanese hypertensive patients. Hypertens Res 2001; 24:3-11. [PMID: 11213027 DOI: 10.1291/hypres.24.3] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The morbidity rate of coronary artery disease has recently increased in Japan. This is attributable to changes from traditional to more westernized lifestyles. In this study, we therefore examined the risk factors and predictors of coronary arterial lesions in Japanese patients with essential hypertension. Coronary angiography was performed in 109 consecutive essential hypertension patients (57 men and 52 women; 66 +/- 8.0 years of age) with either angina pectoris or atypical chest pain, who were chosen from 485 consecutive hypertensive patients in a hypertension clinic in Sendai, Japan. Coronary arterial stenosis of greater than 50% was defined as significant and used as a dependent variable for the multiple regression analysis. Risk factors were defined as factors confirmed to have a causal relationship with coronary arterial lesions, whereas arteriosclerotic complications and hypertensive target organ damage were defined as predictors. Multiple logistic regression analysis was performed using these parameters as independent variables. Of 109 patients, 25 had a coronary arterial stenosis greater than 50%. A smoking habit (odds ratio (OR): 4.48; 95% confidence interval (CI): 1.13-17.82; p<0.05), hypercholesterolemia (OR: 5.34; 95% CI: 1.52-18.73; p<0.05), and 24-h diastolic blood pressure (OR: 2.33; 95% CI: 1.06-5.16; p<0.05) were significant risk factors, whereas carotid intima-media thickness (OR: 5.85; 95% CI: 1.48-23.2; p<0.05) was a significant predictor of coronary arterial lesion. When two of the major risk factors (a smoking habit, hypercholesterolemia, or impaired glucose tolerance including diabetes mellitus) were clustered in addition to the hypertension, the risk of coronary arterial lesions increased by 6.7 to 10.1 times. These findings indicate that the major risk factors established in Caucasians, i.e., a smoking habit, hypercholesterolemia and blood pressure level, are also risk factors for coronary arterial lesions in Japanese with essential hypertension. The presence of two or more risk factors increases the risk of coronary arterial lesions synergistically in the presence of hypertension.
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Affiliation(s)
- J Kato
- Department of Medicine, Tohoku University Graduate School of Pharmaceutical Science and Medicine, Sendai, Japan
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21
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Tanaka M, Yamazaki H, Hakusui H, Nakamichi N, Sekino H. Differential stereoselective pharmacokinetics of pantoprazole, a proton pump inhibitor in extensive and poor metabolizers of pantoprazole--a preliminary study. Chirality 2000; 9:17-21. [PMID: 9094198 DOI: 10.1002/(sici)1520-636x(1997)9:1<17::aid-chir4>3.0.co;2-d] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Pantoprazole (PAN) is a proton pump inhibitor that is administered as a racemic mixture. The pharmacokinetics of PAN enantiomers were investigated in extensive metabolizers (EMs) and apparent poor metabolizers (PMs) of PAN who received a single, 40, 60, or 80 mg oral dose of racemic PAN as enteric-coated formulation. In the EMs, the serum concentrations of (-)-PAN were slightly higher than those of (+)-PAN at each dose level. The (+)/(-) ratios for the area under the concentration-time curve (AUC) and the half-life were 0.58-0.89 and 0.62-0.88, respectively. In the PMs, the serum concentrations and both enantiomers were much higher than those in the EMs at each dose level and significant differences in pharmacokinetics of (+)- and (-)-PAN were observed. The half-lives for (+)-PAN were 2.67-3.77 times longer than those for (-)-PAN. The AUCs for (+)-PAN were 2.65-3.45 times greater than those for (-)-PAN. Therefore, the metabolism of (+)-PAN is impaired to a greater extent than (-)-PAN in the PMs, which resulted in the stereoselective disposition of PAN in the PMs. It has been suggested that the EMs and the PMs of PAN could be differentiated by determining the (+)/(-) enantiomer ratio in serum at one time point, possibly 2-6 h after oral dosing, because the (+)/(-) enantiomer ratios in the PMs were opposite those in the EM subjects.
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Affiliation(s)
- M Tanaka
- Drug Metabolism and Analytical Chemistry Research Laboratory, Daiichi Pharmaceutical Co., Ltd., Tokyo, Japan
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22
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Abstract
We report the case of a 10-year-old boy having a recurrent craniopharyngioma with nasopharyngeal extension during a course of growth hormone therapy, in whom the nasopharyngeal craniopharyngioma was totally resected despite its extensive growth by using a transbasal approach. There has been no evidence of recurrence during 6 years of follow-up. A literature review was made with respect to nasopharyngeal extension of craniopharyngiomas, and the efficacy of the transbasal approach for those tumors is discussed.
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Affiliation(s)
- Y Taguchi
- Departments of Neurosurgery and Pediatrics, St. Marianna University School of Medicine, Kawasaki, Japan
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23
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Niki Y, Watanabe S, Tamada S, Yoshida K, Miyashita N, Nakajima M, Matsushima T, Sekino H, Matsuoka O. Effect of HSR-903, a new fluoroquinolone, on the concentration of theophylline in serum. Antimicrob Agents Chemother 1999; 43:1494-6. [PMID: 10348779 PMCID: PMC89305 DOI: 10.1128/aac.43.6.1494] [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] [Received: 06/23/1998] [Accepted: 03/12/1999] [Indexed: 11/20/2022] Open
Abstract
The effect of HSR-903, a new fluoroquinolone, on the concentration of theophylline in serum in healthy male volunteers was investigated. The concentration of theophylline in serum and the urinary excretion rates of theophylline on day 5 of concomitant dosing with HSR-903 tended to increase compared to those on day 4, when theophylline was given alone; however, the urinary excretion rates of 1-methyluric acid and 3-methylxanthine on day 5 of concomitant dosing with HSR-903 tended to decrease in comparison to those on day 4, when theophylline was given alone.
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Affiliation(s)
- Y Niki
- Division of Respiratory Diseases, Department of Medicine, Kawasaki Medical School, 577 Matsushima, Kurashiki 701-0192, Japan.
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24
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Inoue T, Akiyama K, Ogasawara K, Sekino H, Negishi N, Sezai Y. [A trial case of coronary bypass surgery under heart beat in a patient with severe functional disorders of kidney]. Kyobu Geka 1999; 52:129-33. [PMID: 10036873] [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: 02/10/2023]
Abstract
Coronary artery bypass grafting (CABG) was performed under heart beat without conducting extracorporeal circulation in a patient with severe functional disorders of kidney, and satisfactory results were attained. The patient was a 71-year-old male with past history of severe functional disorders of kidney and cerebral infarction. He had triple-vessel disease. First, CABG was performed for the primary branches under heart beat without adopting extra-corporeal circulation, then later, percutaneous transluminal coronary angioplasty (PTCA) was performed for the residual lesions, which lead to complete revascularization without causing aggravation of cerebral infarction or functional disorders of kidney or subjective symptoms such as chest pain. CABG conducted under heart beat is less aggressive not only to myocardium but to other important organs, and is thought to be effective for patients who have severe concurrent diseases to which extracorporeal circulation is likely to entail risks. Furthermore, concurrent therapy with PTCA is thought to expand the scope of application of CABG under heart beat including the cases of multiple-vessel diseases.
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Affiliation(s)
- T Inoue
- Second Department of Surgery, Nihon University, Tokyo, Japan
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25
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Hashimoto K, Shirafuji T, Sekino H, Matsuoka O, Sekino H, Onnagawa O, Okamoto T, Kudo S, Azuma J. Interaction of citrus juices with pranidipine, a new 1,4-dihydropyridine calcium antagonist, in healthy subjects. Eur J Clin Pharmacol 1998; 54:753-60. [PMID: 9923580 DOI: 10.1007/s002280050547] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
OBJECTIVES The study was conducted to investigate whether oral co-administration with citrus juices significantly affects the pharmacokinetics and/or pharmacodynamics of pranidipine, a new 1,4-dihydropyridine calcium antagonist, in healthy male subjects. Grapefruit juice and orange juice, which were both commercially available, were used in this study. METHODS Sixteen healthy male Japanese subjects participated in this study and were divided into two groups for grapefruit juice and orange juice treatment. The study followed an open-labelled crossover design, comparing the effects of a single oral dose of 2 mg pranidipine taken together with 250 ml citrus juice or 250 ml water. Serum pharmacokinetics of pranidipine, adverse reactions, blood pressure, heart rate, 12-lead ECG, haematology, clinical chemistry and urinalysis were measured throughout the study. RESULTS For grapefruit juice, mean Cmax and AUC0-24 h were significantly higher than those of water (P=0.0003 and 0.0005, respectively, ANOVA) with the ratios of log transformed values being 1.50 and 1.74, respectively. There were no differences in tmax and t1/2 between the juice and water treatments. A significant increase in heart rate (P=0.0240, ANOVA with repeated measurements) was observed in the juice treatment whereas there were no significant differences in systolic and diastolic blood pressure between the two treatments. For orange juice, a small decrease in mean Cmax was observed compared with water (P=0.0218, ANOVA) with the ratio being 0.86, but there was no significant difference in AUC0-24h between the two treatments. No marked differences were observed in tmax and t1/2. Oral pranidipine administration with orange juice did not affect heart rate, systolic and diastolic blood pressures or other parameters for safety evaluation. CONCLUSIONS Oral co-administration with grapefruit juice and pranidipine was associated with increased bioavailability and changed the pharmacodynamics of pranidipine, particularly with regard to heart rate. Orange juice intake with pranidipine did not markedly affect the pharmacokinetics and no clinically significant changes were observed in the pharmacodynamics and safety evaluation.
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26
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Abiko T, Sekino H. Functional roles of phenylalanine(7) of thymic humoral factor-gamma 2 in the impaired blastogenic response of uremic T-lymphocytes. Drug Dev Ind Pharm 1998; 24:569-72. [PMID: 9876625 DOI: 10.3109/03639049809085660] [Citation(s) in RCA: 7] [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] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The peptide analogs of thymic humoral factor-gamma 2 (THF-gamma 2) in which phenylalanine residue at the 7th position are replaced by phenylglycine (Phg), homophenylalanine (Hph), and 1-naphthylalanine (1-Nal) were synthesized by a solid-phase method and the immunological significance of the aromatic amino acid of this position was comparatively investigated. The in vitro restoring effect of the synthetic peptides on the impaired phytohemagglutinin (PHA) response of T-lymphocytes from uremic patients was tested. The observed activities of these peptides were in order (1-Nal7) thymic humoral factor [THF]-gamma 2 > 4-Fluoro (Phe7) THF-gamma 2 > THF-gamma 2. However, the other two analogs, [Phg7] THF-gamma 2 and [Hph7] THF-gamma 2, had no restoring effect even at a higher concentration.
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Affiliation(s)
- T Abiko
- Kidney Research Laboratory, Sendai, Japan
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27
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Sakakibara Y, Matsuzawa M, Taguchi Y, Sekino H, Shinagawa T, Abe M, Tadokoro M. [A case of sellar T cell type malignant lymphoma]. No Shinkei Geka 1998; 26:53-8. [PMID: 9488992] [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: 02/06/2023]
Abstract
A case of primary T cell type malignant lymphoma of the sellar region was reported. This 53-year-old male was admitted to our neurosurgical service because of slowly progressive occipitalgia and diplopia over the previous 5 months. On admission neurological examination revealed a slight limitation of the lateral movement of the left eye. Endocrinological examination showed no abnormalities. Despite a mild neurological deficit, a CT scan revealed an extensive bony destruction around the sellar region including the dorsum sellae, the bilateral petrous apices, and the upper two thirds of the clivus. Magnetic resonance imaging (MRI) disclosed that the tumor was slightly hypointense on T1-weighted image, isointense on T2-weighted image, and faintly and homogeneously enhanced after administration of Gd-DTPA. Since the tumor was enhanced faintly on MRI, it was diagnosed as an invasive pituitary adenoma, but it was thought that chordoma and germinoma should be considered. The patient underwent a transsphenoidal surgery. A firm, grayish and avascular tumor was partially removed. The histopathological examination using monoclonal surface marker of the specimen revealed the tumor was stained with UCHL-1 and CD3 antibodies directed against T cells, and diagnosed as T cell type malignant lymphoma of the sellar region (diffuse, large cell type; LSG). Postoperatively he received radiation therapy. His symptoms much improved and no regrowth of the residual tumor has been found in follow-up studies to the present. Primary malignant lymphomas very rarely occur in the skull base. As far as we are aware, this is the only second case of primary T-cell lymphoma in the sellar region reported so far in the medical literature. Although preoperative diagnosis is extremely difficult because of a paucity of data, malignant lymphomas should be kept in mind in the differential diagnosis of sellar tumors, especially if neuroimaging studies show an extensive bony destruction in the skull base.
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MESH Headings
- Combined Modality Therapy
- Diagnosis, Differential
- Female
- Humans
- Lymphoma, Large B-Cell, Diffuse/diagnosis
- Lymphoma, Large B-Cell, Diffuse/pathology
- Lymphoma, Large B-Cell, Diffuse/surgery
- Lymphoma, T-Cell/diagnosis
- Lymphoma, T-Cell/pathology
- Lymphoma, T-Cell/surgery
- Magnetic Resonance Imaging
- Male
- Middle Aged
- Pituitary Neoplasms/diagnosis
- Sella Turcica
- Skull Base Neoplasms/diagnosis
- Skull Base Neoplasms/pathology
- Skull Base Neoplasms/surgery
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Affiliation(s)
- Y Sakakibara
- Division of Neurosurgery, St. Marianna University Yokohama City Seibu Hospital, Japan
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28
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Abstract
Acarbose and voglibose are alpha-glucosidase inhibitors. Although the pharmacologic effects and incidence of abdominal adverse events associated with the two drugs have been reported to differ, no study has directly compared acarbose and voglibose. To compare the pharmacologic effects and gastrointestinal adverse events associated with the two drugs, a randomized, placebo-controlled, double-masked, fivefold crossover study was performed in 20 healthy male subjects. To assess the pharmacologic effects, plasma immunoreactive insulin (IRI), plasma glucose, and 24-hour urinary connecting-peptide immunoreactivity (CPR) excretion were measured. Although the postprandial increase in plasma glucose level was reduced significantly with both acarbose and voglibose, the rate of reduction was small. The maximum concentration (Cmax) and area under the plasma concentration-time curve (AUC) of plasma IRI after meals decreased significantly with all treatments except voglibose 0.3 mg compared with placebo. Overall, the Cmax and AUC of plasma IRI decreased more when subjects received acarbose than voglibose. Urinary CPR excretion decreased by 30.6% and 41.7%, respectively, in subjects who received acarbose 50 mg or 100 mg compared with the previous day when no drug was given, whereas the urinary CPR excretion did not decrease significantly with voglibose. There was no significant difference in the frequency of gastrointestinal adverse events between groups, including the placebo group. One-day administration of acarbose and voglibose at currently recommended clinical doses demonstrated that acarbose was more effective in sparing endogenous insulin secretion than was voglibose.
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Affiliation(s)
- S Kageyama
- Division of Clinical Pharmacology and Therapeutics, Jikei University School of Medicine, Tokyo, Japan
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29
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Tanaka M, Yamazaki H, Hakusui H, Nakamichi N, Sekino H. Differential stereoselective pharmacokinetics of pantoprazole, a proton pump inhibitor in extensive and poor metabolizers of pantoprazole--a preliminary study. Chirality 1997. [PMID: 9094198 DOI: 10.1002/(sici)1520-636x(1997)9:1<17::aid-chir4>3.0.co;2-d] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Pantoprazole (PAN) is a proton pump inhibitor that is administered as a racemic mixture. The pharmacokinetics of PAN enantiomers were investigated in extensive metabolizers (EMs) and apparent poor metabolizers (PMs) of PAN who received a single, 40, 60, or 80 mg oral dose of racemic PAN as enteric-coated formulation. In the EMs, the serum concentrations of (-)-PAN were slightly higher than those of (+)-PAN at each dose level. The (+)/(-) ratios for the area under the concentration-time curve (AUC) and the half-life were 0.58-0.89 and 0.62-0.88, respectively. In the PMs, the serum concentrations and both enantiomers were much higher than those in the EMs at each dose level and significant differences in pharmacokinetics of (+)- and (-)-PAN were observed. The half-lives for (+)-PAN were 2.67-3.77 times longer than those for (-)-PAN. The AUCs for (+)-PAN were 2.65-3.45 times greater than those for (-)-PAN. Therefore, the metabolism of (+)-PAN is impaired to a greater extent than (-)-PAN in the PMs, which resulted in the stereoselective disposition of PAN in the PMs. It has been suggested that the EMs and the PMs of PAN could be differentiated by determining the (+)/(-) enantiomer ratio in serum at one time point, possibly 2-6 h after oral dosing, because the (+)/(-) enantiomer ratios in the PMs were opposite those in the EM subjects.
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Affiliation(s)
- M Tanaka
- Drug Metabolism and Analytical Chemistry Research Laboratory, Daiichi Pharmaceutical Co., Ltd., Tokyo, Japan
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30
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Sakamoto T, Oshio K, Hazama Y, Sekino H, Tadokoro M. [A chronic encapsulated expanding hematoma with cyst formation caused by rupture of arteriovenous malformation: a case report]. No Shinkei Geka 1997; 25:73-7. [PMID: 8990472] [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: 02/03/2023]
Abstract
A 57-year-old male was admitted to our hospital complaining of a headache with disturbance of consciousness on November 7, 1994. CT scans revealed an intracerebral hematoma of 25ml in volume in the left frontal lobe with adjacent spotty calcification. An arteriovenous malformation (AVM) with a nidus of 2.0 x 2.0cm in size was found to be the cause of the hematoma by cerebral angiography. Since the patient complained of mild right hemiparesis 10 days after the onset, CT scans were taken and a slightly enlarged hematoma with capsule formation was observed. On the 31st day after the onset, the hematoma had liquefied and the surrounding capsule was clearly visible on CT. Since the patient's only symptom was a slight headache, and he displayed no other serious conditions, a palliative operation was planned. The AVM was removed and the capsule was resected 41 days after the onset. The capsule or cyst wall of the liquefied hematoma was composed of three layers: a granulation layer with a neovascular system on the inside, a collagenous layer in the middle, and a reactive brain tissue layer on the outside. The structure of the capsule was the same as the structure of the cyst wall in chronic hematomas that have been reported as cystic AVM or encapsulated expanding hematoma in the literature. We would therefore like to propose that chronic encapsulated expanding hematomas form with time due to intermittent bleeding or exudation form the neovascular system of a cyst wall.
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Affiliation(s)
- T Sakamoto
- Department of Neurosurgery, Machida City Hospital
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31
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Abiko T, Sekino H. Functional roles of Phe of deacetyl-thymosin beta4 in the impaired blastogenic response of uraemic T-lymphocytes. Mediators Inflamm 1997; 6:64-8. [PMID: 18472836 PMCID: PMC2365843 DOI: 10.1080/09629359791956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Phe12 of deacetyl-thymosin β4 is one of the structural essentials for restorative effect on the impaired blastogenic response of uraemic T-lymphocytes. In order to evaluate the functional roles of this phenyl group in the restorative effect on impaired T-lymphocytes, two analogues, [1- Nal12]deacetyl-thymosin β4 and [Cha12]deacetyl4 thymosin β4, were synthesized by a solid-phase method and evaluated for restorative effect on the impaired blastogenic response of uraemic T-lymphocytes. The results indicated that
[1-Nal12]deacetyl-thymosin β4 which had a bulky naphthyl ring showed a stronger restorative effect than that of deacetyl-thymosin β4, but it was slightly weaker than that of [Phe(4F)12]deacetyl-thymosin β4. However, [Cha12]deacetyl-thymosin β4 showed no restorative effect on the impaired blastogenic response of uraemic T-lymphocytes.
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Affiliation(s)
- T Abiko
- Kidney Research Laboratory Kojinkai 1- 6 Tsutsujigaoka 2-chome Miyagino-ku Sendai 980 Japan
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32
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Tanaka M, Yamazaki H, Ryokawa Y, Hakusui H, Nakamichi N, Sekino H. Pharmacokinetics and tolerance of pantoprazole, a proton pump inhibitor after single and multiple oral doses in healthy Japanese volunteers. Int J Clin Pharmacol Ther 1996; 34:415-9. [PMID: 8897077] [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: 02/02/2023] Open
Abstract
The pharmacokinetics and tolerance of pantoprazole were investigated after single (20, 40, 80, and 120 mg) and multiple (80 mg once a day for 7 days) oral administration as enteric-coated tablet formulation to healthy male Japanese volunteers. Pantoprazole was well tolerated with no serious adverse events at all doses. Pantoprazole was rapidly absorbed in the fasted state. The mean maximum concentration in serum (Cmax) ranged from 1.77-9.25 micrograms/ml for the 20-120 mg dose and the mean time to reach Cmax (tmax) ranged from 1.92-2.42 h. The half-life (t1/2) ranged from 0.74-1.16 h. A good linear correlation was found between the administered doses (20-120 mg) and the resulting area under the concentration-time curve (AUC) and Cmax with the correlation coefficients of 0.9088 and 0.9263, respectively. Within 24 h, pantoprazole was excreted into urine as the unchanged drug to a negligible extent. In the multiple dose study, 2 apparent poor metabolizers (PMs) of pantoprazole were observed. The means of Cmax, AUC and t1/2 for these 2 PMs were 1.6, 6.7, and 6.8 times higher than those of the extensive metabolizers (EMs). The pharmacokinetic parameters such as Cmax, AUC, and t1/2 after the 7th oral dose were not significantly different from those after the 1st dose both in the PMs and the EMs, which indicated that there was virtually no drug accumulation.
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Affiliation(s)
- M Tanaka
- Drug Metabolism and Analytical Chemistry Research Laboratory, Daiichi Pharmaceutical Co. Ltd., Tokyo, Japan
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33
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Abstract
The authors describe a surgical technique to avoid postoperative enophthalmos when using the cranioorbital approach. To perform osteotomies with a less demanding technique, two separate bone flaps were created: 1) a free frontotemporal bone flap and 2) en bloc removal of the superior and lateral orbital rims: Because the latter bone flap includes both the orbital roof and the posterolateral wall of the orbit with the greater wing of the sphenoid bone, unnecessary bone defects in the lateral orbital wall are avoided. The technique has been performed in seven patients treated for medially located skull base neoplasms or complex anterior circulation aneurysms without postoperative enophthalmos or other cosmetic problems. The authors believe this cranioorbital approach, with its simpler, less invasive surgical technique, offers a definite advantage by avoiding postoperative enophthalmos.
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Affiliation(s)
- Y Taguchi
- Department of Neurosurgery, St. Marianna University School of Medicine, Kawasaki, Japan
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34
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Tsuboi T, Ohi M, Chin K, Noguchi T, Kita H, Otsuka N, Sekino H, Murao H, Kuriyama T, Kuno K. [Outcome of long-term nasal intermittent positive pressure ventilation in 41 patients with hypercapnic respiratory failure]. Nihon Kyobu Shikkan Gakkai Zasshi 1996; 34:959-67. [PMID: 8937138] [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: 02/03/2023]
Abstract
Nasal intermittent positive pressure ventilation (NIPPV) is widely used in domiciliary treatment of chronic ventilatory disorders. The outcomes of long-term NIPPV were analyzed in 41 patients with hypercapnic respiratory failure due to pulmonary tuberculosis sequelae (PTS; n = 17), neuromuscular disease (NMD; n = 8), kyphoscoliosis (KS; n = 7), chronic obstructive pulmonary disease (COPD; n = 6), and miscellaneous diseases (n = 3). Twenty-seven patients with chronic conditions but without acute exacerbations began receiving NIPPV, and fourteen patients began receiving NIPPV after an acute exacerbation. Outcome measures included the probability of continuing NIPPV, survival after starting NIPPV, survival after starting home oxygen therapy (HOT), arterial blood gases, nocturnal oxygen saturation, pulmonary function, and the number of hospital days. Two patients with PTS died, 7 and 40 months after starting NIPPV. Two patients (one with PTS and one with COPD) switched from NIPPV to intermittent positive pressure ventilation via a tracheostomy. The condition of one patient with NMD improved and NIPPV was discontinued. The three-year and five-year probabilities of continuing NIPPV in all patients were 82%, and 71%, respectively. The survival rates three and five years after starting NIPPV were 97% and 85%, respectively. The survival rates one to nine years, and ten to eleven years after starting HOT were 98% and 65%, respectively. The arterial PO2 and PCO2, nocturnal oxygen saturation, vital capacity, and forced expiratory volume, in one second all improved after NIPPV was begun. NIPPV also reduced the number of hospital days, particularly in patients with KS. In conclusion, the long-term outcome of NIPPV in patients with hypercapnic respiratory failure is encouraging.
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Affiliation(s)
- T Tsuboi
- Department of Clinical Physiology, Kyoto University, Japan
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35
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Abiko T, Sekino H. Syntheses and immunological effects of thymic humoral factor-gamma 2 and its Phe7-substituted analogues. Artif Organs 1996; 20:853-6. [PMID: 8853795 DOI: 10.1111/j.1525-1594.1996.tb04558.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: 02/02/2023]
Abstract
Thymic humoral factor-gamma 2 and five analogues modified at position 7 with various phenylalanine derivatives were synthesized by a solid-phase method. The synthetic peptides were tested for their effects on the impaired blastogenic response of phytohemagglutinin-stimulated T lymphocytes of uremic patients with infectious diseases. The synthetic thymic humoral factor-gamma 2 enhanced the blastogenic response of T lymphocytes in the blood of the 2 patients tested. Of the synthetic peptides, [Phe(4F)7]thymic humoral factor-gamma 2 exhibited the most potent effect.
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Affiliation(s)
- T Abiko
- Kidney Research Laboratory, Sendai, Japan
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36
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Agatsuma S, Sekino H, Watanabe H. Indoxyl-beta-D-glucuronide and 3-indoxyl sulfate in plasma of hemodialysis patients. Clin Nephrol 1996; 45:250-6. [PMID: 8861801] [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: 02/02/2023] Open
Abstract
The content of indoxyl-beta-D-glucuronide, which has been found in patients' plasma as a new indicator of renal failure, logarithmically correlated with that of 3-indoxyl sulfate (indican) in the plasma of hemodialysis patients, showing another weak correlation with beta(2)-microglobulin content. The content ratio of indoxyl-beta-D-glucuronide to 3-indoxyl sulfate (IG/IS) gradually increased depending on the duration of hemodialysis treatment. Indoxyl-beta-D-glucuronide could be easily dialyzed in the hemodialysis treatment, in contrast to hardly dialyzable 3-indoxyl sulfate which bound to plasma proteins. Therefore, glucuronide conjugation in indole excretion is favorable for hemodialysis patients in that it eliminates indoxyl compounds in blood by hemodialysis.
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37
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Taguchi Y, Suzuki R, Okada M, Sekino H. Spinal arachnoid cyst developing after surgical treatment of a ruptured vertebral artery aneurysm: a possible complication of topical use of fibrin glue. Case report. J Neurosurg 1996; 84:526-9. [PMID: 8609570 DOI: 10.3171/jns.1996.84.3.0526] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
A case is reported of a 59-year-old man with a spinal arachnoid cyst accompanied by spinal arachnoiditis. The patient developed symptoms after treatment for a ruptured vertebral artery aneurysm, in which fibrin glue was used for reconstruction of the suboccipital bone defect. It is believed that the fibrin glue may have played a role in forming the arachnoid cyst. The authors urge the readers to keep in mind the possibility of subclinical spinal arachnoiditis in the patients with aneurysmal subarachnoid hemorrhage and suggest that care should be taken to avoid any possible adverse effect of fibrin glue.
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Affiliation(s)
- Y Taguchi
- Department of Neurosurgery, St. Marianna University School of Medicine, Kawasaki, Japan
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38
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Abiko T, Sekino H. Synthesis of [Phe(4F)3]thymopoietin II and examination of its immunological effect on the impaired blastogenic response of T-lymphocytes of uremic patients. Bioorg Med Chem 1995; 3:1369-75. [PMID: 8564403 DOI: 10.1016/0968-0896(95)00121-v] [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: 01/31/2023]
Abstract
[Phe(4F)3]thymopoietin II was synthesized using a conventional solution method. The deprotection of the protected [Phe(4F)3]thymopoetin II was achieved by treatment with 1 M trifluoromethanesulfonic acid:thioanisole (molar ratio 1:1) in trifluoroacetic acid in the presence of dimethylselenide and m-cresol. The synthetic f1p4(4F)3]thymopoietin II and thymopoietin II were tested for effect on impaired T-lymphocyte transformation by phytohemagglutinin in uremic patients suffering from recurrent infectious diseases. The restoring activity on the impaired phytohemagglutinin stimulation of T-lymphocytes was obtained after incubation of peripheral lymphocytes isolated from uremic patients with the synthetic [Phe(4F)3]thymopoietin II. This peptide exhibited far stronger restoring effect than that of our synthetic thymopoietin II.
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Affiliation(s)
- T Abiko
- Kidney Research Laboratory, Sendai, Japan
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39
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Sakamoto T, Sakakibara Y, Hayashi T, Yamashita K, Sekino H, Ozawa T, Tadokoro M. [Recurrence of pleomorphic xanthoastrocytoma six years after total removal of mural nodule: a case report]. No Shinkei Geka 1995; 23:941-5. [PMID: 7477706] [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: 01/25/2023]
Abstract
A case of recurrent pleomorphic xanthoastrocytoma (PXA) was reported. A 46-year-old male underwent total removal of mural nodule from cystic tumor in the left temporal lobe in 1986. Histological diagnosis was astrocytoma. There were no abnormal neurological signs or symptoms after the operation. However, 6 years after the operation he complained of strong unpleasant smell as of rotten onions and was admitted to our hospital. MRI revealed a cystic tumor with a mural nodule which was enhanced markedly by Gd-DTPA in the same location as previous tumor site. He was operated upon again and tumor was removed with the cyst wall. Histological diagnosis was PXA. Surgical procedures for removal of cystic PXA has been controversial; removal of tumor only, tumor removal with biopsy of cyst wall, or tumor removal with resection of cyst wall. Real reason for recurrence of this tumor in our case is unknown. However, since astrocytoma cells were found in the biopsy specimen of the cyst wall at time of the first operation, the tumor might have recurred from these cells. Therefore, this time we removed not only the mural nodule but also the cyst wall, because the cyst wall peeled off easily. We would like to propose that PXA cyst walls should be resected, whenever possible, in order to accomplish total removal of tumor.
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Affiliation(s)
- T Sakamoto
- Department of Neurosurgery, St. Marianna University Toyoko Hospital
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40
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Nushiro N, Sakamaki T, Hoshino J, Nakamura T, Sakamoto H, Imai Y, Seino M, Omata K, Sekino H, Abe K. Recombinant human erythropoietin stimulates tubular reabsorption of sodium in anesthetized rabbits. Hypertens Res 1995; 18:203-7. [PMID: 7584929 DOI: 10.1291/hypres.18.203] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
To determine whether recombinant human erythropoietin (rHuEPO) exerts a direct vasoconstrictive effect on renal arteries or affects renal function, we measured renal hemodynamics and renal function during a 30-min intrarenal infusion of rHuEPO in anesthetized rabbits without renal failure. Intrarenal infusion of rHuEPO at a rate of 100 U/min did not alter mean arterial pressure, renal blood flow, or renal vascular resistance, as compared with controls treated with vehicle. There were no significant rHuEPO-associated changes in glomerular filtration rate, filtration fraction, or arterial hematocrit. However, urine volume, urinary excretion of sodium and potassium, and fractional sodium excretion were significantly reduced by intrarenal infusion of rHuEPO. These observations indicate that rHuEPO has no direct effects on mean arterial pressure or renal hemodynamics, but that it stimulates net tubular sodium reabsorption, and reduces urine volume and urinary excretion of sodium and potassium in anesthetized rabbits without renal failure.
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Affiliation(s)
- N Nushiro
- Second Department of Internal Medicine, Gunma University School of Medicine, Maebashi, Japan
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41
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Terasawa Y, Suzuki Y, Morita M, Kato M, Suzuki K, Sekino H. In Reply. J Urol 1995. [DOI: 10.1097/00005392-199505000-00086] [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: 11/25/2022]
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42
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Imai Y, Sekino H, Fujikura Y, Munakata M, Minami N, Hashimoto J, Sakuma H, Watanabe N, Misawa S, Nishiyama A. Pressor effect of recombinant human erythropoietin: results of ambulatory blood pressure monitoring and home blood pressure measurements. Clin Exp Hypertens 1995; 17:485-506. [PMID: 7613524 DOI: 10.3109/10641969509037420] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
We investigated whether treatment of anemic hemodialysis patients with a low dose of recombinant human erythropoietin (erythropoietin) for a short period would increase their blood pressure. Ambulatory blood pressure monitoring and home blood pressure measurements were used to detect minute increase in blood pressure. Thirty-two patients with a hematocrit of 25% or less received erythropoietin at the dose of 4500 IU/week, by the intravenous route for 8 weeks. Erythropoietin increased the hematocrit from 20.9 +/- 2.1 to 26.2 +/- 2.1%. Erythropoietin elevated mean ambulatory blood pressure by 5 mmHg or more in two-thirds of patients (n = 20; pressor group), while it elevated home mean blood pressure by 5 mmHg or more in one-third of patients (n = 11). An increase in clinic mean blood pressure by more than 5 mmHg was observed only in one-fourth of patients (n = 7). Circadian variation of blood pressure (nocturnal fall and diurnal rise) had been attenuated in the patients of the pressor group before erythropoietin treatment and erythropoietin decreased the nocturnal fall of blood pressure further more. Erythropoietin elevated nocturnal blood pressure more than diurnal blood pressure. Therefore, the increase in blood pressure induced by erythropoietin was detected more reliably by ambulatory blood pressure monitoring. There was no relation between the change in hemoglobin concentration and the increase in ambulatory blood pressure induced by erythropoietin. Erythropoietin tended to decrease cardiac output and plasma volume while it increased total peripheral resistance. It also decreased plasma norepinephrine and vasopressin levels but did not affect other humoral factors. Although the pressor effect of erythropoietin treatment for 8 weeks at the dose of 4500 IU/week was not evident on clinic blood pressure measurements, any increase in blood pressure determined by ambulatory blood pressure should be treated carefully to reduce the risk of a cardiovascular complication in patients receiving hemodialysis.
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Affiliation(s)
- Y Imai
- Second Department of Medicine, Tohoku University School of Medicine, Sendai, Japan
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43
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Imai Y, Watanabe N, Hashimoto J, Nishiyama A, Sakuma H, Sekino H, Omata K, Abe K. Muscle cramps and elevated serum creatine phosphokinase levels induced by beta-adrenoceptor blockers. Eur J Clin Pharmacol 1995; 48:29-34. [PMID: 7621844 DOI: 10.1007/bf00202168] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
We have assessed the propensity of beta-adrenoceptor blockers to cause muscle cramps and to raise the serum creatine phosphokinase (CPK) level in 78 patients with essential hypertension. After a control period, a beta-adrenoceptor blocker without intrinsic sympathomimetic activity (ISA; propranolol, metoprolol or arotinolol) was administered for three months. Thereafter, the patients were randomised to receive a beta-adrenoceptor blocker with ISA (pindolol or carteolol) for three months or a beta-adrenoceptor blocker without ISA for a further three months. This pattern was continued until all beta-adrenoceptor blockers had been given. At the end of each period, CPK and CPK-MB levels were measured. Of the 78 subjects, muscle cramps occurred in 27 during treatment with pindolol and 32 during treatment with carteolol. No complaints were made by subjects treated with propranolol and arotinolol, but muscle cramps were reported in 2 treated with metoprolol. While muscle cramps were caused both by pindolol and carteolol in 16 subjects, they were caused by either of these drugs in the remainder of the subjects. Muscle cramp occurred mainly in the calves when the patients were in bed at night. Serum CPK and CPK-MB levels increased significantly during treatment with pindolol (control period vs pindolol, CPK = 96 vs 133 IU.ml-1, CPK-MB = 14 vs 18 IU.ml-1) or carteolol (CPK = 117 IU.ml-1, CPK-MB = 18 IU.ml-1) while the levels during treatment with propranolol, arotinolol and metoprolol did not change from those in the control period.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- Y Imai
- Second Department of Medicine, Tohoku University School of Medicine, Sendai, Japan
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44
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Munakata M, Imai Y, Mizunashi K, Hashimoto J, Sekino H, Furukawa Y, Abe K. The effect of graded calcium infusions on rhythmic blood pressure oscillations in normal man. Clin Auton Res 1995; 5:5-11. [PMID: 7780291 DOI: 10.1007/bf01845492] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
This study was designed to determine whether calcium contributes to the regulation of rhythmic oscillations in blood pressure. Six normal subjects received sequential 1-h infusions of calcium gluconate (1.5, 3.0 and 4.5 mg calcium/kg/h) during continuous blood pressure (Finapres) monitoring. The plasma ionized calcium ([Ca2+]) concentration increased from 4.6 +/- 0.07 mg/dl to 5.97 +/- 0.20 mg/dl (p < 0.01) with infusion. The mid-frequency (0.07-0.14 Hz, Mayer wave) power spectrum of diastolic blood pressure was depressed slightly following the first dose but increased significantly following the final dose (p < 0.05). The high-frequency (0.15-0.40 Hz) power spectrum of systolic blood pressure decreased following the first dose (p < 0.05) and subsequently remained low. The low-frequency (0.02-0.6 Hz) power spectrum was not affected. These results demonstrate that graded hypercalcaemia affects blood pressure oscillations in man. Our data suggest that the amplitude of the Mayer wave, a clinical marker of sympathetic vascular tone, is modulated in part by calcium.
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Affiliation(s)
- M Munakata
- Second Department of Internal Medicine, Tohoku University, School of Medicine, Sendai, Japan
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45
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Hashimoto J, Imai Y, Minami N, Munakata M, Sakuma H, Sekino H, Imai K, Sasaki S, Yoshinaga K, Abe K. Compliance with long-term dietary salt restriction in hypertensive outpatients. Clin Exp Hypertens 1994; 16:729-39. [PMID: 7858556 DOI: 10.3109/10641969409078022] [Citation(s) in RCA: 10] [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] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Eighty hypertensive outpatients were recruited for a dietary salt restriction program to examine long-term compliance. Twenty-four-hour urine samples were collected repeatedly (7.9 +/- 2.6 times, mean +/- s.d.) during a follow-up period of 6.4 +/- 1.7 years. After initial urine collection, nutritional education was carried out by dietitians to reduce dietary salt intake to 8 g/day or less. After every urine collection, the subjects were given advice by doctors on salt restriction, if necessary. The mean 24-hour urinary salt excretion (U-NaCl) and the mean urinary salt/creatinine ratio (U-NaCl/U-Cr) varied considerably both among and within individuals. U-NaCl/U-Cr, but not U-NaCl, in females was significantly higher than that in males, and in middle-aged subjects than in young subjects. U-NaCl and U-NaCl/U-Cr tended to decrease in the summer. In spite of the repeated educational effort, neither U-NaCl nor U-NaCl/U-Cr was different in the first control samples from that in the last samples. When 57 subjects were divided into three groups according to the urinary salt excretion level, U-NaCl was consistently higher during a follow-up period in the high-salt excretion group than in the mid-salt excretion group, while U-NaCl in the low-salt excretion group was initially lower than, but finally similar to, that in the mid-salt excretion group. These results suggest that: (1) multiple 24-hour urine samplings are required to assess urinary salt excretion in individuals; (2) the influence of age and sex should be taken into account in interpreting U-NaCl/U-Cr; and (3) it seems difficult to achieve long-term dietary salt restriction as a non-pharmacologic treatment of hypertension in an outpatient clinic.
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Affiliation(s)
- J Hashimoto
- Second Department of Internal Medicine, Tohoku University School of Medicine, Sendai, Japan
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Abstract
From April 1985 to December 1992 abdominal ultrasonic examination was performed in 1,603 hemodialysis patients at our hospital. Renal cell carcinoma was found in 41 patients (2.6%), confirmed by nephrectomy as well as histology. This rate was 32 times greater than that of the general population (22 patients with renal cell carcinoma were detected among 27,933 at our health care center). Renal cell carcinoma was found in 18 patients with a contracted kidney, 19 with acquired cystic disease of the kidney and 4 with a native kidney after renal transplantation. Among 19 patients with acquired cystic disease of the kidney 8 had unilateral multiple tumors and 5 bilateral multiple tumors. The detection rate of renal cell carcinoma was 100% by ultrasonography, 67% by computerized tomography and 56% by angiography. Ultrasonography was the most accurate examination for the diagnosis of renal cell carcinoma in hemodialysis patients.
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Affiliation(s)
- Y Terasawa
- Department of Internal Medicine, Sendai Shakaihoken Hospital, Japan
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47
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Nakaya N, Nakamichi N, Sekino H, Nomura M, Ishii M, Tomono Y, Yamato C. Effect of a novel ACAT inhibitor, E5324, on serum lipids and lipoproteins in healthy volunteers. Atherosclerosis 1994. [DOI: 10.1016/0021-9150(94)94015-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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48
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Ishii M, Tomono Y, Sanma H, Yamato C, Nakamichi N, Sekino H, Nomura M, Nakaya N. Pharmacokinetics of a novel ACAT inhibitor, E5324, in healthy volunteers. Atherosclerosis 1994. [DOI: 10.1016/0021-9150(94)94014-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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49
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Abstract
Acetyl-thymic humoral factor-gamma 2 chloromethyl ketone [Ac-Leu-Glu-Asp-Gly-Pro-Lys-Phe-Leu-CH2Cl], an analog of thymic humoral factor-gamma 2, was synthesized and studied for its immunological effects on the impaired blastogenic response of T-lymphocytes isolated from uremic patients. Synthetic thymic humoral factor-gamma 2 and the synthetic acetyl-thymic humoral factor-gamma 2 chloromethyl ketone both restored the impaired blastogenic response of T-lymphocytes of uremic patients. However, the synthetic thymic humoral factor-gamma 2 is susceptible to proteolytic digestion. On the other hand, the synthetic acetylthymic humoral factor-gamma 2 chloromethyl ketone retained activity and was shown to exhibit a high degree of stability when incubated in human serum, These results indicate that N-terminal acetylation and the introduction of a chloromethyl ketone residue into the C-terminal residue of thymic humoral factor-gamma 2 increase resistance to proteolytic degradation by exopeptidases without loss of immunological activity.
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Affiliation(s)
- T Abiko
- Kidney Research Laboratory, Sendai, Japan
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50
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Agatsuma S, Sekino H, Nagoshi T, Watanabe H. Indoxyl-beta-D-glucuronide, the primary emitter of low-level chemiluminescence in plasma of hemodialysis patients. Clin Chem 1994. [DOI: 10.1093/clinchem/40.8.1580] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Characteristic light emission induced by the oxidation of hydroxyl radicals has been found in plasma of hemodialysis patients (Agatsuma et al., Clin Chem 1992;38:48-55). We purified a primary emitter, a chemiluminescent component peaking at 430 nm, by anion-exchange chromatography and reversed-phase HPLC. By using proton nuclear magnetic resonance and authentic indoxyl compounds, we determined the primary emitter to be indoxyl-beta-D-glucuronide. Absorption and fluorescence spectra of the purified sample coincided well with those of authentic indoxyl-beta-D-glucuronide, as did the peak in the chemiluminescence emission spectrum. Retention time of the purified sample on reversed-phase HPLC, measured by fluorescence, was also in accordance with that of indoxyl-beta-D-glucuronide. To our knowledge, this is the first identification of a primary emitter of low-level chemiluminescence from a biological source.
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Affiliation(s)
| | - H Sekino
- Kohjinkai Hospital, Miyagi, Japan
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