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Koike H, Ashizawa K, Tsutsui S, Kurohama H, Okano S, Nagayasu T, Kido S, Uetani M, Toya R. Differentiation Between Heterogeneous GGN and Part-Solid Nodule Using 2 D Grayscale Histogram Analysis of Thin-Section CT Image. Clin Lung Cancer 2023; 24:541-550. [PMID: 37407293 DOI: 10.1016/j.cllc.2023.06.001] [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: 04/27/2023] [Revised: 06/07/2023] [Accepted: 06/08/2023] [Indexed: 07/07/2023]
Abstract
INTRODUCTION/BACKGROUND To evaluate cases of surgically resected pulmonary adenocarcinoma (Ad) with heterogenous ground-glass nodules (HGGNs) or part-solid nodules (PSNs) and to clarify the differences between them, and between invasive adenocarcinoma (IVA) and minimally invasive adenocarcinoma (MIA) + adenocarcinoma in situ (AIS) using grayscale histogram analysis of thin-section computed tomography (TSCT). MATERIALS AND METHODS 241 patients with pulmonary Ad were retrospectively classified into HGGNs and PSNs on TSCT by three thoracic radiologists. Sixty HGGNs were classified into 17 IVAs, 26 MIAs, and 17 AISs. 181 PSNs were classified into 114 IVAs, 55 MIAs, and 12 AISs. RESULTS We found significant differences in area (P = 0.0024), relative size of solid component (P <0.0001), circumference (P <0.0001), mean CT value (P <0.0001), standard deviation of the CT value (P <0.0001), maximum CT value (P <0.0001), skewness (P <0.0001), kurtosis (P <0.0001), and entropy (P <0.0001) between HGGNs and PSNs. In HGGNs, we found significant differences in relative size of solid component (P <0.0001), mean CT value (P = 0.0005), standard deviation of CT value (P = 0.0071), maximum CT value (P = 0.0237), and skewness (P = 0.0027) between IVAs and MIA+AIS lesions. In PSNs, we found significant differences in area (P = 0.0029), relative size of solid component (P = 0.0003), circumference (P = 0.0004), mean CT value (P = 0.0011), skewness (P = 0.0009), and entropy (P = 0.0002) between IVAs and the MIA+AIS lesions. CONCLUSION Quantitative evaluations using grayscale histogram analysis can clearly distinguish between HGGNs and PSNs, and may be useful for estimating the pathology of such lesions.
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Affiliation(s)
- Hirofumi Koike
- Departments of Radiology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Kazuto Ashizawa
- Departments of Clinical Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
| | - Shin Tsutsui
- Departments of Radiology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Hirokazu Kurohama
- Department of Pathology, Nagasaki University Hospital, Nagasaki, Japan
| | - Shinji Okano
- Department of Pathology, Nagasaki University Hospital, Nagasaki, Japan
| | - Takeshi Nagayasu
- Departments of Surgical Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Shoji Kido
- Department of Artificial Intelligence Diagnostic Radiology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Masataka Uetani
- Departments of Radiology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Ryo Toya
- Departments of Radiology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
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He X, Sueyoshi E, Nagayama H, Koike H, Uetani M. The hemodynamics of adrenal veins with four-dimensional computed tomography using quantitative time-density curve: a study based on aldosteronism patients. Sci Rep 2023; 13:14348. [PMID: 37658182 PMCID: PMC10474258 DOI: 10.1038/s41598-023-41414-9] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 08/25/2023] [Indexed: 09/03/2023] Open
Abstract
Present study quantitatively analyzed adrenal venous flow using four-dimensional computed tomography (4D CT). We reviewed 4D CT images of 55 patients [mean age, 52 years ± 11 (standard deviation); 23 females] who underwent adrenal venous sampling between August 2017 and February 2021. Time-density curves were referred for the adrenal venous enhancement. The clinical factors affecting hemodynamics were assessed using uni- and multivariate linear regression analyses. The right and left adrenal veins (RAV and LAV, respectively) were visualized in all cases. Mean peak enhancement values in RAV and LAV were 247 ± 67 and 292 ± 70 Hounsfield units (P < 0.01), and were reached at 44.43 ± 6.86 and 45.39 ± 7.53 s (P < 0.01), respectively. The body mass index (BMI), plasma renin activity and potassium were significant factors influencing the peak enhancement of RAV blood flow [standardized regression coefficients, - 0.327 (P = 0.017), - 0.346 (P = 0.013), 0.426 (P = 0.016), respectively]. A linear relationship between sex and the time-to-peak was observed for RAV [standardized regression coefficient, 0.348 (P = 0.046)]. RAV had a lower contrast effect than LAV and reached its peak faster. BMI, plasma renin activity, and potassium were associated with flow density in RAV. Sex independently influenced the time-to-peak.
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Affiliation(s)
- Xi He
- Department of Radiological Sciences, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8521, Japan
| | - Eijun Sueyoshi
- Department of Radiology, Nagasaki Harbor Medical Center, Nagasaki, Japan.
| | - Hiroki Nagayama
- Department of Radiological Sciences, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8521, Japan
| | - Hirofumi Koike
- Department of Radiological Sciences, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8521, Japan
| | - Masataka Uetani
- Department of Radiological Sciences, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8521, Japan
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Nishigaki T, Kato H, Sakamoto Y, Suzuki T, Kaneko M, Ide K, Okamura N, Suzuki T, Koike H, Sahashi Y. Comparing the Dosing Period in Package Inserts of Antimicrobial Agents Between Japan and the United States. Cureus 2023; 15:e38266. [PMID: 37122972 PMCID: PMC10147487 DOI: 10.7759/cureus.38266] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/26/2023] [Indexed: 05/02/2023] Open
Abstract
Introduction: The duration of antimicrobial therapy is a critical evaluation index of antimicrobial stewardship (AS). The inclusion of the dosing period on package inserts provides a strong reason for clinical intervention by pharmacists in cases where physicians prescribe inappropriate dosing periods. This study investigated differences in the description of dosing periods in antimicrobial package inserts between Japan and the U.S. Methods: We conducted a survey comparing differences in the dosing period of oral and injectable antimicrobials approved and marketed in Japan and the U.S. as of May 1, 2021. The Fisher exact test was used to compare the presence or absence of a description of the dosing period on the package insert between these two countries. Results: We evaluated 69 antimicrobial agents, of which 34 were oral; and 35 were injectable agents. In Japan, 20 (29.0%) of the antimicrobials had package inserts stating the dosing periods, compared with 58 (84.1%) in the U.S. (p < 0.001). Conclusions: It was found that the information on the duration of administration was missing from the package insert in Japan compared to the U.S. Lack of information on the duration of administration may lead to long-term administration by the treating physician and also make it difficult for the pharmacist to inquire about the administration. It is expected that the inclusion of scientifically-based dosing periods in all package inserts will promote AS among physicians and pharmacists who are not specialists in infectious disease therapy.
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Affiliation(s)
- Tetsuta Nishigaki
- Pharmaceutical Department, Yokohama City University Hospital, Yokohama, JPN
| | - Hideaki Kato
- Infection Prevention and Control Department, Yokohama City University Hospital, Yokohama, JPN
| | - Yasutaka Sakamoto
- Pharmaceutical Department, Yokohama City University Hospital, Yokohama, JPN
| | - Tomoyo Suzuki
- Pharmaceutical Department, Yokohama City University Hospital, Yokohama, JPN
| | - Mirei Kaneko
- Pharmaceutical Department, Yokohama City University Hospital, Yokohama, JPN
| | - Kazuo Ide
- Pharmaceutical Department, Yokohama City University Hospital, Yokohama, JPN
| | | | - Taiichi Suzuki
- Pharmaceutical Department, Yokohama City University Hospital, Yokohama, JPN
| | - Hirofumi Koike
- Pharmaceutical Department, Yokohama City University Hospital, Yokohama, JPN
| | - Yukiko Sahashi
- Pharmaceutical Department, Yokohama City University Hospital, Yokohama, JPN
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Koike H, Ashizawa K, Tsutsui S, Fukuda M, Okano S, Matsumoto K, Nagayasu T, Honda S, Uetani M. Surgically resected lung adenocarcinoma: do heterogeneous GGNs and part-solid nodules on thin-section CT show different prognosis? Jpn J Radiol 2023; 41:164-171. [PMID: 36219310 PMCID: PMC9889431 DOI: 10.1007/s11604-022-01345-3] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 09/27/2022] [Indexed: 02/04/2023]
Abstract
PURPOSE This study aimed to evaluate the clinical courses of patients with surgically resected stage IA pulmonary adenocarcinoma (Ad) who exhibited heterogeneous ground-glass nodules (GGNs) or part-solid nodules on thin-section computed tomography (TSCT) and to clarify the prognostic differences between them. MATERIALS AND METHODS The cases of 242 patients with proven pulmonary Ad with heterogeneous GGN or part-solid nodule who underwent surgical resection were retrospectively reviewed. After surgery, they were examined pathologically. Disease-free survival (DFS) and overall survival (OS) were also investigated. RESULTS There were no cases of recurrent pulmonary Ad or death from the primary disease in the heterogeneous GGN group. In the part-solid nodule group, recurrent pulmonary Ad and death from the primary disease were observed in 12 and 6 of 181 patients, respectively. Heterogeneous GGNs were associated with significantly longer DFS than part-solid nodules (p = 0.042). While, there was no significant difference in OS between the two groups (p = 0.134). Pathological diagnoses were available for all 242 patients. 181 part-solid nodules were classified into 116 invasive Ads, 54 minimally invasive Ads (MIAs), and 11 Ad in situ (AIS) lesions, and 61 heterogeneous GGNs were classified into 18 invasive Ads, 25 MIAs, and 18 AIS lesions. CONCLUSION Heterogeneous GGNs were significantly associated with longer DFS than part-solid nodules. Pathologically, there were significant differences between the heterogeneous GGNs and part-solid nodules.
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Affiliation(s)
- Hirofumi Koike
- Departments of Radiology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501 Japan
| | - Kazuto Ashizawa
- Clinical Oncology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501 Japan
| | - Shin Tsutsui
- Departments of Radiology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501 Japan
| | - Minoru Fukuda
- Clinical Oncology Center, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, 852-8501 Japan
| | - Shinji Okano
- Depatment of Pathology, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, 852-8501 Japan
| | - Keitaro Matsumoto
- Surgical Oncology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501 Japan
| | - Takeshi Nagayasu
- Surgical Oncology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501 Japan
| | - Sumihisa Honda
- Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nursing, Nagasaki, 852-8501 Japan
| | - Masataka Uetani
- Departments of Radiology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501 Japan
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Koike H, Morikawa M, Ishimaru H, Ideguchi R, Uetani M, Hiu T, Matsuo T, Miyoshi M. Amide proton transfer MRI differentiates between progressive multifocal leukoencephalopathy and malignant brain tumors: a pilot study. BMC Med Imaging 2022; 22:227. [PMID: 36572873 PMCID: PMC9793649 DOI: 10.1186/s12880-022-00959-3] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 12/22/2022] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Progressive multifocal leukoencephalopathy (PML) is a demyelinating disease of the central nerve system caused by the John Cunningham virus. On MRI, PML may sometimes appear similar to primary central nervous system lymphoma (PCNSL) and glioblastoma multiforme (GBM). The purpose of this pilot study was to evaluate the potential of amide proton transfer (APT) imaging for differentiating PML from PCNSL and GBM. METHODS Patients with PML (n = 4; two men; mean age 52.3 ± 6.1 years), PCNSL (n = 7; four women; mean age 74.4 ± 5.8 years), or GBM (n = 11; 6 men; mean age 65.0 ± 15.2 years) who underwent APT-CEST MRI between January 2021 and September 2022 were retrospectively evaluated. Magnetization transfer ratio asymmetry (MTRasym) values were measured on APT imaging using a region of interest within the lesion. Receiver operating characteristics curve analysis was used to determine diagnostic cutoffs for MTRasym. RESULTS The mean MTRasym values were 0.005 ± 0.005 in the PML group, 0.025 ± 0.005 in the PCNSL group, and 0.025 ± 0.009 in the GBM group. There were significant differences in MTRasym between PML and PCNSL (P = 0.023), and between PML and GBM (P = 0.015). For differentiating PML from PCNSL, an MTRasym threshold of 0.0165 gave diagnostic sensitivity, specificity, positive predictive value, and negative predictive value of 100% (all). For differentiating PML from GBM, an MTRasym threshold of 0.015 gave diagnostic sensitivity, specificity, positive predictive value, and negative predictive value of 100%, 90.9%, 80.0%, and 100%, respectively. CONCLUSION MTRasym values obtained from APT imaging allowed patients with PML to be clearly discriminated from patients with PCNSL or GBM.
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Affiliation(s)
- Hirofumi Koike
- grid.174567.60000 0000 8902 2273Department of Radiology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501 Japan
| | - Minoru Morikawa
- grid.411873.80000 0004 0616 1585Department of Radiology, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, 852-8501 Japan
| | - Hideki Ishimaru
- grid.411873.80000 0004 0616 1585Department of Radiology, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, 852-8501 Japan
| | - Reiko Ideguchi
- grid.174567.60000 0000 8902 2273Department of Radioisotope Medicine, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8588 Japan
| | - Masataka Uetani
- grid.174567.60000 0000 8902 2273Department of Radiology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501 Japan
| | - Takeshi Hiu
- grid.174567.60000 0000 8902 2273Department of Neurosurgery, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501 Japan
| | - Takayuki Matsuo
- grid.174567.60000 0000 8902 2273Department of Neurosurgery, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501 Japan
| | - Mitsuharu Miyoshi
- grid.481637.f0000 0004 0377 9208MR Application and Workflow, GE Healthcare Japan, 4-7-127 Asahigaoka, Hino, Tokyo 191-8503 Japan
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Koike H, Morikawa M, Ishimaru H, Ideguchi R, Uetani M, Hiu T, Matsuo T, Miyoshi M. Quantitative Chemical Exchange Saturation Transfer Imaging of Amide Proton Transfer Differentiates between Cerebellopontine Angle Schwannoma and Meningioma: Preliminary Results. Int J Mol Sci 2022; 23:ijms231710187. [PMID: 36077581 PMCID: PMC9456068 DOI: 10.3390/ijms231710187] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 08/15/2022] [Accepted: 09/04/2022] [Indexed: 11/25/2022] Open
Abstract
Vestibular schwannomas are the most common tumor at the common cerebellopontine angle, followed by meningiomas. Differentiation of these tumors is critical because of the different surgical approaches required for treatment. Recent studies have demonstrated the utility of amide proton transfer (APT)-chemical exchange saturation transfer (CEST) imaging in evaluating malignant brain tumors. However, APT imaging has not been applied in benign tumors. Here, we explored the potential of APT in differentiating between schwannomas and meningiomas at the cerebellopontine angle. We retrospectively evaluated nine patients with schwannoma and nine patients with meningioma who underwent APT-CEST MRI from November 2020 to April 2022 pre-operation. All 18 tumors were histologically diagnosed. There was a significant difference in magnetization transfer ratio asymmetry (MTRasym) values (0.033 ± 0.012 vs. 0.021 ± 0.004; p = 0.007) between the schwannoma and meningioma groups. Receiver operative curve analysis showed that MTRasym values clearly differentiated between the schwannoma and meningioma groups. At an MTRasym value threshold of 0.024, the diagnostic sensitivity, specificity, positive predictive value, and negative predictive values for MTRasym were 88.9%, 77.8%, 80.0%, and 87.5%, respectively. Our results demonstrated the ability of MTRasym values on APT-CEST imaging to discriminate patients with schwannomas from patients with meningiomas.
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Affiliation(s)
- Hirofumi Koike
- Department of Radiology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan
- Correspondence:
| | - Minoru Morikawa
- Department of Radiology, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan
| | - Hideki Ishimaru
- Department of Radiology, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan
| | - Reiko Ideguchi
- Department of Radioisotope Medicine, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8588, Japan
| | - Masataka Uetani
- Department of Neurosurgery, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan
| | - Takeshi Hiu
- Department of Neurosurgery, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan
| | - Takayuki Matsuo
- Department of Neurosurgery, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan
| | - Mitsuharu Miyoshi
- MR Application and Workflow, GE Healthcare Japan, Hino, Tokyo 191-8503, Japan
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Koike H, Ashizawa K, Tsutsui S, Nagayasu T, Uetani M, Kido S. EP13.01-007 Differentiation between heterogeneous GGNs and part solid nodules using histogram on thin-section CT. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Fukui M, Enriquez-Sarano M, Koike H, Aluru J, Lesser A, Bapat V, Lesser J, Sorajja P, Cavalcante J. 441 Volumetric Right Ventricle Assessment Post Transcatheter Aortic Valve Replacement:findings In Routine Clinical Practice And Implications For Outcome. J Cardiovasc Comput Tomogr 2022. [DOI: 10.1016/j.jcct.2022.06.046] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Koike H, Sueyoshi E, Uetani M. Diagnosis of Chronic Thromboembolic Pulmonary Hypertension Using Quantitative Lung Perfusion Parameters Extracted From Dual-energy Computed Tomography Images. J Thorac Imaging 2022; 37:239-245. [PMID: 35394985 DOI: 10.1097/rti.0000000000000646] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE To evaluate quantified iodine mapping parameters in dual-energy computed tomography in normal patients versus those with chronic thromboembolic pulmonary hypertension (CTEPH) with and without pulmonary thromboembolism. MATERIALS AND METHODS Using automatically quantified iodine mapping in dual-energy computed tomography, we evaluated lung relative average enhancement, standard deviation (SD), and the SD/lung relative average enhancement ratio. We compared the values for these parameters in normal patients versus those with CTEPH. We also performed a receiver operating characteristic curve analysis to determine the diagnostic cutoffs for the parameters. RESULTS Patients constituted 41 patients (10 male [24.4%] and 31 female [75.6%]; mean age [SD]: 70.0 y [13.3]) with CTEPH and 237 (92 male [38.8%] and 145 female [61.2%]; mean age [SD]: 65.9 y [15.9]) normal patients. We found significant differences in lung relative average enhancement (34.9±6.3 vs. 26.9±6.3; P <0.0001), SD (11.6±1.9 vs. 14.7±3.3; P <0.001), and the SD/lung relative average enhancement ratio (33.7±5.0 vs. 55.7±10.4; P <0.001) between the normal and CTEPH groups, respectively. The ROC analyses demonstrated high discriminatory power (area under the curve=0.99) for using the SD/lung relative average enhancement ratio to differentiate between patients in the normal group and CTEPH group. At a threshold for the area under the curve of 44.2, diagnostic sensitivity, specificity, positive predictive value, and negative predictive value for the ratio were 92.7%, 97.5%, 86.5%, and 98.7%, respectively. CONCLUSIONS Patients with CTEPH were well-discriminated from normal patients using the SD/lung relative average enhancement ratio.
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Affiliation(s)
- Hirofumi Koike
- Department of Radiology, Nagasaki University Graduate School of Biomedical Sciences
- Department of Radiology, Nagasaki University School of Medicine, Nagasaki, Japan
| | - Eijun Sueyoshi
- Department of Radiology, Nagasaki University Graduate School of Biomedical Sciences
- Department of Radiology, Nagasaki University School of Medicine, Nagasaki, Japan
| | - Masataka Uetani
- Department of Radiology, Nagasaki University Graduate School of Biomedical Sciences
- Department of Radiology, Nagasaki University School of Medicine, Nagasaki, Japan
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Koike H, Harada M, Kunitomi C, Kusamoto A, Xu Z, Tanaka T, Urata Y, Osuga Y. P-610 Endoplasmic reticulum stress-induced Notch signaling stimulates cumulus-oocyte complex expansion in PCOS. Hum Reprod 2022. [DOI: 10.1093/humrep/deac107.560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Study question
Does endoplasmic reticulum (ER) stress and Notch signaling affect cumulus-oocyte complex (COC) expansion in pathophysiology of polycystic ovary syndrome (PCOS)?
Summary answer
Notch signaling is induced via activation of ER stress in granulosa cells (GCs) of PCOS and stimulates COC expansion that is abrogated by Notch inhibition.
What is known already
PCOS presents a variety of symptoms including ovarian dysfunction which is caused by various local factors in follicular microenvironment; among them, ER stress and following activation of unfolded protein response are critical, causing ovarian fibrosis, growth arrest of antral follicles and other ovarian dysfunctions. While Notch signaling pathway plays an important role of various ovarian functions such as ovarian development, follicle growth, luteinization and steroid hormone synthesis, the potential interaction between Notch signaling and ER stress in ovarian function is not determined.
Study design, size, duration
To examine expression levels of Notch signaling, ovaries and granulosa-lutein cells (GLCs) were collected from PCOS patients undergoing surgery or IVF. Human GLCs were collected from follicular fluid of IVF patients and cultured under ER-stressed condition. COCs obtained from PMSG-primed mice were subjected to examine the in vitro effects of ER stress activation and Notch inhibition on COC expansion. To examine the in vivo effects of Notch inhibition, dehydroepiandrosterone-induced PCOS mouse model was used.
Participants/materials, setting, methods
The expression levels of Notch signaling in ovaries and GLCs were investigated by immunohistochemistry and real time qPCR. To examine whether Notch signaling is activated by ER stress, human GLCs were incubated with ER stress inducer or inhibitor and ATF4 was knocked down by RNA interference. To investigate COC expansion level, murine COCs were cultured under ER stress condition with/without Notch signaling inhibitor. The COCs were collected from PCOS mice treated with/without Notch inhibitor.
Main results and the role of chance
We found that the expression levels of Notch2 and Hey2, a transcription factor activated by Notch signaling, were upregulated in GCs of antral follicles from PCOS patients and PCOS mice by using immunohistochemical analysis. Similarly, mRNA levels of these genes were higher in GLCs from PCOS patients than those from control patients. Notch signaling was induced in cultured human GLCs incubated with an ER stress inducer, tunicamycin; the effect was abrogated by incubation with an ER stress inhibitor, tauroursodeoxycholic acid (TUDCA), or knockdown of activating transcription factor 4 (ATF4, a transcription factor induced by ER stress). These findings suggest that Notch signaling is induced by ER stress via ATF4 pathway in human GCs. Measuring under a microscope, the area of expanded COCs was increased in cultured murine COCs incubated with tunicamycin, while this stimulatory effect of tunicamycin was abrogated by adding a Notch signaling inhibitor, DAPT. The area of expanded COCs obtained from PCOS model mice was increased compared to control mice, while administration of DAPT to these mice reduced the area. These results suggest that ER stress-induced Notch signaling stimulate COC expansion contributing PCOS pathophysiology.
Limitations, reasons for caution
COC expansion area was measured only in PCOS model mouse; it is unknown whether COC expansion is induced in PCOS patients. This point requires further investigation in PCOS patients.
Wider implications of the findings
Our findings suggest that ER stress-induced Notch signaling affects COC expansion, associated with ovulatory dysfunction in PCOS. The detailed understandings of PCOS pathophysiology may be beneficial for substantial clinical implications and inhibition of ER stress or Notch signaling may serve as a novel therapeutic approach for PCOS.
Trial registration number
This study was supported by Grants-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS) (19k09749, 19k24045, 19k24021, 21k16808, 21j12871,), a grant from the Takeda Science Foundation, a grant from The Tokyo Society of Medical Science, a grant from The Japan Society of Fertility Preservation, and a grant from The Japan Society for Menopause and Women’s Health (JMWH) (a JMWH Bayer Grant).
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Affiliation(s)
- H Koike
- University of Tokyo, Obstetrics and Gynecology , Tokyo, Japan
| | - M Harada
- University of Tokyo, Obstetrics and Gynecology , Tokyo, Japan
| | - C Kunitomi
- University of Tokyo, Obstetrics and Gynecology , Tokyo, Japan
| | - A Kusamoto
- University of Tokyo, Obstetrics and Gynecology , Tokyo, Japan
| | - Z Xu
- University of Tokyo, Obstetrics and Gynecology , Tokyo, Japan
| | - T Tanaka
- University of Tokyo, Obstetrics and Gynecology , Tokyo, Japan
| | - Y Urata
- University of Tokyo, Obstetrics and Gynecology , Tokyo, Japan
| | - Y Osuga
- University of Tokyo, Obstetrics and Gynecology , Tokyo, Japan
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Miyazawa Y, Nomura M, Syuto T, Seiji A, Sekine Y, Koike H, Hiroshi M, Suzuki K. The relationship between adherent perinephric fat and sex hormone levels in serum and perinephric fat tissue of patients treated by robotic assisted partial nephrectomy. Eur Urol 2022. [DOI: 10.1016/s0302-2838(22)00298-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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12
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Sueyoshi E, Murakami T, He X, Koike H, Nagayama H, Uetani M. CT findings of type A acute aortic dissection that did and did not result in prehospital death. Medicine (Baltimore) 2022; 101:e28657. [PMID: 35089207 PMCID: PMC8797546 DOI: 10.1097/md.0000000000028657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Accepted: 01/04/2022] [Indexed: 01/05/2023] Open
Abstract
The differences between the pathologies of cases of type A acute aortic dissection (AAD) that did and did not result in prehospital death (PHD) have not been fully elucidated.This study aimed to compare the CT findings and clarify the differences between the pathologies of such cases.Ninety four consecutive type A AAD patients between 2010 and 2020 were enrolled in this study. There were 47 males and 47 females (mean age: 69.0 ± 14.4 years). The patients were divided into those that did (n = 25, 27%) and did not (n = 69, 73%) suffer PHD. We retrospectively evaluated the CT or postmortem CT findings of each case and analyzed the relationships between clinical factors (CT findings and clinical characteristics) and PHD using logistic regression analysis.Bloody pericardial effusion (96% vs 35%, P < .0001), bloody pleural effusion (40% vs 1%, P < .0001), and mediastinal hematomas (88% vs 14%, P < .0001) were significantly more common in the PHD group than in the no PHD group.In the multivariate logistic regression analysis, bloody pericardial effusion and lung consolidation were found to be significant risk factors for PHD (odds ratio: 21.29 [95% confidence intervals {CI}: 1.19-248.29] and 13.72 [95% CI: 1.79-105.06], respectively; P = .014 and P = .012, respectively). AD affecting the abdominal aorta was identified as a significant negative risk factor for PHD (odds ratio: 0.02 [95% CI: 0.01-0.65]; P = .0042).Most PHD due to type A AAD are associated with hemorrhaging. Bleeding into the pericardium and type A AAD confined to the thoracic aorta are significant risk factors for PHD. Secondary respiratory failure might contribute to PHD in such cases.
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Nishimura T, Sueyoshi E, Koike H, Uetani M. Initial experience with intensity distribution analysis of hemodynamic parameters in the thoracic aorta using four-dimensional magnetic resonance imaging: A comparison between groups with different ejection fractions. Medicine (Baltimore) 2022; 101:e28563. [PMID: 35029224 PMCID: PMC8757938 DOI: 10.1097/md.0000000000028563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 12/21/2021] [Indexed: 11/26/2022] Open
Abstract
The purpose of this study was to investigate whether there were significant differences in the intensity distributions of thoracic aorta hemodynamic parameters between groups with different ejection fractions (EF) using four-dimensional flow magnetic resonance imaging and to investigate the relationships between each parameter.A total of 26 patients, 13 each with EF of >60% and <30%, underwent cardiac four-dimensional flow magnetic resonance imaging (EF >60%: mean age: 54 ± 11.6 years, EF <30%: mean age: 49.2 ± 17.2 years). The thoracic aorta was divided into the proximal and distal ascending aorta (AAo), aortic arch, and the proximal and distal descending aorta, and each section was further divided into the anterior wall, posterior wall, lesser curvature, and greater curvature. The intensity distributions of wall shear stress (WSS), energy loss (EL), and vorticity (Vort) (hemodynamic parameters) and the concordance rates between these distributions were analyzed.The concordance rate between the intensity distributions of EL and Vort was high. Only the intensity distributions of EL and Vort in the distal AAo differed significantly between the groups (P < .001). In the EF >60% group, these intensity distributions showed higher values in the greater curvature of the AAo, whereas in the EF <30% group higher values were seen in the lesser curvature of the AAo.Although there was no significant intergroup difference in the WSS intensity distribution, in the EF <30% group the WSS intensity distribution tended to exhibit higher values in the lesser curvature of the distal AAo, and the WSS intensity distribution values for the greater curvature tended to gradually increase from the arch to the proximal descending aorta.The only significant differences between the EF groups were found in the intensity distributions of EL and Vort in the distal AAo. This suggests that the distributions of atherosclerosis may be EF-dependent.
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Wada R, Shinohara M, Yao S, Yano K, Akitsu K, Koike H, Kinoshita T, Yuzawa H, Nakanishi R, Fujino T, Ikeda T. Significance of mitral L wave to predict late recurrence of atrial fibrillation after radiofrequency catheter ablation. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.0350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Mitral L wave, prominent mid-diastolic filling wave in echocardiographic examinations, is associated with severe left ventricular diastolic dysfunction, and that has been reported to predict recurrent atrial fibrillation (AF) after cardioversion. However, association between mitral L wave and the outcome of AF after radiofrequency catheter ablation (RFCA) has not been established.
Objective
The aim of this study is to evaluate the predictive value of mitral L wave on AF recurrence after RFCA.
Methods
250 patients including 164 paroxysmal AF (65.6%) and 86 non-paroxysmal AF (34.4%) who received RFCA in single center from January 2015 to December 2016 were enrolled consecutively. Echocardiographic examinations before RFCA were recorded, and the mitral L wave was defined as a distinct mid-diastolic flow velocity with a peak velocity ≥20 cm/s following the E wave. Systematic follow-up was conducted after RFCA. Univariate and multivariate analyses were carried out to determine the factors predicting late recurrence of AF (LRAF) which means AF recurrence after 3 months. Enrolled patients were divided into groups with the L wave (L-group; n=57) or without the L wave (NL-group; n=193) based on the findings of echocardiographic examinations.
Results
During a follow-up of 35.0±17.6 months, the ratio of LRAF in the L-group was significantly higher than that in the NL-group (32 (56.1%) vs. 41 (21.2%), Hazard ratio [HR]: 3.55, 95% confidence interval [CI]: 2.33 - 5.42, p<0.001). Among the clinical factors, presence of mitral L wave, BNP value, non-paroxysmal AF and moderate-severe mitral regurgitation were related to LRAF. A multivariate analysis using a Cox proportional hazard model found that presence of mitral L wave (HR: 2.67, 95% CI: 1.30 - 5.48, p=0.007) was significantly associated with LRAF.
Conclusion
This study revealed that mitral L wave predicts late recurrence of AF after RFCA.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- R Wada
- Toho University Faculty of Medicine, Division of Cardiovascular Medicine, Department of Internal Medicine, Tokyo, Japan
| | - M Shinohara
- Toho University Faculty of Medicine, Division of Cardiovascular Medicine, Department of Internal Medicine, Tokyo, Japan
| | - S Yao
- Toho University Faculty of Medicine, Division of Cardiovascular Medicine, Department of Internal Medicine, Tokyo, Japan
| | - K Yano
- Toho University Faculty of Medicine, Division of Cardiovascular Medicine, Department of Internal Medicine, Tokyo, Japan
| | - K Akitsu
- Toho University Faculty of Medicine, Division of Cardiovascular Medicine, Department of Internal Medicine, Tokyo, Japan
| | - H Koike
- Toho University Faculty of Medicine, Division of Cardiovascular Medicine, Department of Internal Medicine, Tokyo, Japan
| | - T Kinoshita
- Toho University Faculty of Medicine, Division of Cardiovascular Medicine, Department of Internal Medicine, Tokyo, Japan
| | - H Yuzawa
- Toho University Faculty of Medicine, Division of Cardiovascular Medicine, Department of Internal Medicine, Tokyo, Japan
| | - R Nakanishi
- Toho University Graduate School of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - T Fujino
- Toho University Graduate School of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - T Ikeda
- Toho University Graduate School of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
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Koike H, Ashizawa K, Tsutsui S, Nagayasu T, Uetani M. P30.04 Clinical Research on Patients With Surgically Resected Lung Adenocarcinoma Lesions: Are Heterogeneous GGNs Different From Part Solid Nodules? J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.08.407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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16
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Koike H, Morikawa M, Uetani M, Sato C, Tsuda M. A case of intracranial vasospasm in a patient with extensive retropharyngeal cellulitis. Radiol Case Rep 2021; 16:2697-2700. [PMID: 34345332 PMCID: PMC8319001 DOI: 10.1016/j.radcr.2021.06.047] [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: 06/11/2021] [Revised: 06/15/2021] [Accepted: 06/16/2021] [Indexed: 11/26/2022] Open
Abstract
Retropharyngeal cellulitis/abscesses are deep neck infections that may become life-threatening if airway compromise occurs. This condition is more common in children than in adults, and associated intracranial vessel narrowing has been reported. We report an adult patient with extensive retropharyngeal cellulitis and intracranial vasospasm. The patient was a 62-year-old woman who presented with fever, sore throat, and neck pain. She also had uncontrolled type 2 diabetes mellitus. Leukocytosis, prolonged erythrocyte sedimentation rate, elevated C-reactive protein, and hyperglycemia were present on admission. Computed tomography and contrast-enhanced magnetic resonance imaging revealed severe swelling in the nasopharyngeal, retropharyngeal, prevertebral, and bilateral carotid spaces. Gadolinium enhancement extended to the middle cranial fossa and visceral space. Multiple stenoses in several intracranial vessels was also identified. Intravenous antibiotic therapy was initiated, the patient's symptoms resolved, and repeat imaging confirmed improvement. Intracranial vasospasm should be considered in patients with retropharyngeal cellulitis.
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Affiliation(s)
- Hirofumi Koike
- Department of Radiological Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Minoru Morikawa
- Department of Radiological Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Masataka Uetani
- Department of Radiological Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Chisei Sato
- Department of Otolaryngology-Head and Neck Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Masayuki Tsuda
- Department of Otolaryngology-Head and Neck Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
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Koike H, Sueyoshi E, Nishimura T, Iwano Y, Oka T, Uetani M, Maemura K. Effect of Balloon Pulmonary Angioplasty on Homogenization of Lung Perfusion Blood Volume by Dual-Energy Computed Tomography in Patients with Chronic Thromboembolic Pulmonary Hypertension. Lung 2021; 199:475-483. [PMID: 34459967 DOI: 10.1007/s00408-021-00471-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Accepted: 08/21/2021] [Indexed: 01/20/2024]
Abstract
OBJECTIVE Balloon pulmonary angioplasty (BPA) is used to treat patients with inoperable chronic thromboembolic pulmonary hypertension (CTEPH); the goal is to improve pulmonary perfusion. We aimed to evaluate lung perfusion blood volume (PBV) with haemodynamic and exercise-capacity parameters to assess the efficacy of BPA in the treatment of CTEPH. METHODS We retrospectively studied 33 patients over a 6-year period. DECT pulmonary angiography was performed before and after BPA. DECT provided iodine distribution maps; whole-lung and regional PBV images and quantification were generated using post-processing software. A mosaic pattern suggesting perfusion inhomogeneity is typical in CTEPH. Hypothetically, BPA treatment would promote homogenization that would be reflected in the calculated standard deviation. RESULTS Lung perfusion images showed decreased heterogeneity after BPA. There was a significant difference before and after BPA in the whole-lung PBV and in the regional standard deviation for pulmonary arterial pressure (R = 0.37, p = 0.032 and R = 0.57, p = 0.006), pulmonary vascular resistance (R = 0.51, p = 0.023 and R = 0.60, p = 0.002), transtricuspid pressure gradient (R = 0.50, p = 0.0028 and R = 0.61, p = 0.0001), brain natriuretic peptide (R = 0.54, p = 0.0012 and R = 0.46, p = 0.0078), and 6-min walking distance (R = 0.59, p = 0.003 and R = 0.26, p = 0.14). The effects were especially pronounced after the first BPA procedure. CONCLUSION Decreased lung heterogeneity may suggest BPA efficacy in treating CTEPH. After BPA treatment, improved lung PBV and improved regional standard deviation showed a strong positive correlation with haemodynamic parameters and exercise capacity, which also suggests that BPA is effective in treating CTEPH.
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Affiliation(s)
- Hirofumi Koike
- Department of Radiology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki University School of Medicine, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan.
| | - Eijun Sueyoshi
- Department of Radiology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki University School of Medicine, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
| | - Takamasa Nishimura
- Department of Radiology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki University School of Medicine, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
| | - Yusuke Iwano
- Department of Radiology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki University School of Medicine, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
| | - Taiga Oka
- Department of Radiology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki University School of Medicine, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
| | - Masataka Uetani
- Department of Radiology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki University School of Medicine, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
| | - Kouji Maemura
- Department of Cardiovascular Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki University School of Medicine, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
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Kusamoto A, Harada M, Azhary JM, Kunitomi C, Nose E, Koike H, Xu Z, Urata Y, Takahashi T, Osuga Y. P–632 Examination of temporal changes in phenotype and gut microbiome during the process of growth in polycystic ovary syndrome (PCOS) model induced by prenatal androgen exposure. Hum Reprod 2021. [DOI: 10.1093/humrep/deab130.631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Study question
From when do abnormality in gut microbiome and phenotypes of PCOS appear during the process of growth?
Summary answer
Reproductive phenotypes of PCOS appear from 6 weeks and metabolic phenotypes from 12 weeks onward. Alteration in gut microbiome appears as early as 4 weeks.
What is known already
The etiology of PCOS remains largely unknown, however PCOS is considered as a complex multigenic disorder with strong epigenetic and environmental influence. Previous studies have suggested that fetal over-exposure to androgens could be the main factor of the development of PCOS after birth. On the other hands, recent studies on both human and PCOS rodent models have demonstrated the association between PCOS and alteration of gut microbiome in adulthood. Furthermore, it was recently reported that gut microbiome in obese adolescent with PCOS is different from obese adolescent without PCOS.
Study design, size, duration
A rodent PCOS model induced by prenatal dehydroepiandrosterone (DHT) exposure was applied to this study. Phenotypes and gut microbiome were compared between PCOS model mice (n = 12/group) and control mice (n = 10/group) at each stage of growth; 4 weeks (prepuberty), 6 weeks (puberty), 8 weeks (adolescent), 12 weeks (young adult), and 16 weeks (adult). The determinants for PCOS phenotypes are onset of puberty, estrous cycle, morphology of ovaries, serum testosterone level, body weight, and insulin resistance.
Participants/materials, setting, methods
Pregnant dams were subcutaneously injected on days of 16, 17, and 18 of gestation with either sesame oil for control groups or sesame oil containing 250µg of DHT for prenatal DHT groups. The evaluation of PCOS phenotypes and gut microbiome in female offspring were performed at each stage of growth. For examination of gut microbiota, next generation sequencing and bioinformatics analysis of 16S rRNA genes were performed on DNA extracted from mouse fecal samples.
Main results and the role of chance
Prenatal DHT mice exhibited delayed puberty onset, disrupted estrous cycle, and significantly increased testosterone levels from 6 weeks onward. Significantly increased atretic antral follicles were observed in prenatal DHT mice at 6, 12, and 16 weeks. Prenatal DHT mice showed significantly decreased body weight at 4, 6, 8 weeks and increased body weight from 12 weeks onward. As for gut microbiome, alpha-diversity was significantly different between control and prenatal DHT mice from 8 weeks onward and beta-diversity was significantly different at 6 and 8 weeks. Altered composition of gut microbiota was observed as early as 4 weeks. At phylum level, Firmicutes are significantly increased in prenatal DHT mice at 4 and 8 weeks and decreased at 16 weeks. Actinobacteria phylum showed significant decrease at 6 and 8 weeks in prenatal DHT mice. At genus level, relative abundance of several bacterial taxa significantly differed between control and prenatal DHT mice; some taxa, such as Allobaculum, Adlercreutzia, Bilophila, Clostridium, Gemella, Gemmiger, Roseburia, Ruminococcus, Staphylococcus, and Sutterella, exhibited constant increase or decrease in prenatal DHT mice during the process of growth. Interestingly, Roseburia was never detected in prenatal DHT mice, while approximately half of control mice harbored Roseburia at 12 and 16 weeks.
Limitations, reasons for caution
It is not clearly determined whether alteration in gut microbiome is cause or result of PCOS development, although the changes in gut microbiome seemed to precede the appearance of typical PCOS phenotypes in the present study. Mouse model does not completely recapitulate human PCOS.
Wider implications of the findings: Our findings suggest that prenatal androgen exposure causes alteration of gut microbiome from pre-puberty onward, even before PCOS phenotypes become apparent. Intervention for girls at risk of PCOS with pre/pro-biotics may prevent them from developing PCOS in future.
Trial registration number
Not applicable
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Affiliation(s)
- A Kusamoto
- The University of Tokyo- Graduate school of Medicine, Obstetrics and Gynecology, Tokyo, Japan
| | - M Harada
- The University of Tokyo- Graduate school of Medicine, Obstetrics and Gynecology, Tokyo, Japan
| | - J M Azhary
- The University of Tokyo- Graduate school of Medicine, Obstetrics and Gynecology, Tokyo, Japan
| | - C Kunitomi
- The University of Tokyo- Graduate school of Medicine, Obstetrics and Gynecology, Tokyo, Japan
| | - E Nose
- The University of Tokyo- Graduate school of Medicine, Obstetrics and Gynecology, Tokyo, Japan
| | - H Koike
- The University of Tokyo- Graduate school of Medicine, Obstetrics and Gynecology, Tokyo, Japan
| | - Z Xu
- The University of Tokyo- Graduate school of Medicine, Obstetrics and Gynecology, Tokyo, Japan
| | - Y Urata
- The University of Tokyo- Graduate school of Medicine, Obstetrics and Gynecology, Tokyo, Japan
| | - T Takahashi
- The University of Tokyo- Graduate school of Medicine, Obstetrics and Gynecology, Tokyo, Japan
| | - Y Osuga
- The University of Tokyo- Graduate school of Medicine, Obstetrics and Gynecology, Tokyo, Japan
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19
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Oki N, Ikebe Y, Koike H, Ideguchi R, Niino D, Uetani M. FDG-PET vs. chemical shift MR imaging in differentiating intertrabecular metastasis from hematopoietic bone marrow hyperplasia. Jpn J Radiol 2021; 39:1077-1085. [PMID: 34101119 PMCID: PMC8568862 DOI: 10.1007/s11604-021-01149-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 05/31/2021] [Indexed: 12/28/2022]
Abstract
Purpose To evaluate the utility of SUVmax on FDG-PET and chemical shift imaging (CSI) on MRI in the differentiation of intertrabecular metastasis (ITM) from hematopoietic bone marrow hyperplasia (HBMH). Patients and methods We retrospectively evaluated 54 indeterminate focal bone marrow lesions in 44 patients detected on FDG-PET. The lesions were assigned to the metastasis group (M group, 29 lesions of 24 patients) and the non-metastasis group (non-M group, 25 lesions of 20 patients) based on the follow-up or the histopathological studies. The lesions were assessed with the maximum standardized uptake value (SUVmax) on FDG-PET CT images and signal change ratio (SCR) on CSI. Results The median SUVmax were 5.62 and 2.91; the median SCR were − 0.08 and − 34.8 in M and non-M groups respectively, with significant difference (p < 0.001). With ROC curve analysis, the optimal cutoff value of SUVmax was 4.48 with a sensitivity of 72.4%, a specificity of 100%, and AUC of 0.905. The cutoff value of SCR was − 6.15 with a sensitivity of 82.8%, a specificity of 80%, and AUC of 0.818. Conclusion FDG-PET and CSI on MRI are useful in distinguishing ITM from HBMH. Though their sensitivities are similar, the specificity of FDG-PET was higher than that of MRI.
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Affiliation(s)
- Nozomi Oki
- Department of Radiological Sciences, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501 Japan
| | - Yohei Ikebe
- Department of Diagnostic and Interventional Radiology, Hokkaido University Hospital, N14, W5, Kita-ku, Sapporo, 060-8648 Japan
| | - Hirofumi Koike
- Department of Radiological Sciences, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501 Japan
| | - Reiko Ideguchi
- Department of Radioisotope Medicine, Atomic Bomb Disease Institute, Nagasaki University, 1-12-4 Sakamoto, Nagasaki, 852-8523 Japan
| | - Daisuke Niino
- Pathology, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, 807-8555 Japan
| | - Masataka Uetani
- Department of Radiological Sciences, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501 Japan
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Koike H, Suzuka M, Morikawa M, Sueyoshi E, Uetani M. Intravascular lipoma of the inferior vena cava and left renal vein. Radiol Case Rep 2021; 16:1233-1236. [PMID: 33868526 PMCID: PMC8041654 DOI: 10.1016/j.radcr.2021.02.070] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 02/20/2021] [Accepted: 02/27/2021] [Indexed: 01/03/2023] Open
Abstract
Intravenous lipoma of the inferior vena cava is an incidental finding on contrast-enhanced computed tomography in 0.5% of individuals. We report a case of multiple intravenous lipomas discovered during diagnosis of cholangitis in a 39-year-old woman. Imaging revealed three fatty masses that appeared connected by cordlike structures: one in the left renal vein with wide mural attachment and two in the inferior vena cava, the higher of which was mobile. We hypothesize that these originated as a single lipoma that subsequently divided into three distinct masses. Because mobile masses may cause pulmonary thromboembolism, surgery is recommended in these cases.
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Affiliation(s)
- Hirofumi Koike
- Department of Radiological Sciences, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan
| | - Miyakawa Suzuka
- Department of Radiological Sciences, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan
| | - Minoru Morikawa
- Department of Radiological Sciences, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan
| | - Eijyun Sueyoshi
- Department of Radiological Sciences, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan
| | - Masataka Uetani
- Department of Radiological Sciences, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan
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21
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Sueyoshi E, Koike H, Nagayama H, He X, Sakamoto I, Uetani M. Endovascular Repair of Diffuse Pulmonary Arteriovenous Malformations with Systemic Arterial Shunts. Vasc Endovascular Surg 2021; 55:642-644. [PMID: 33622206 DOI: 10.1177/1538574421996948] [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: 11/15/2022]
Abstract
Diffuse pulmonary arteriovenous malformations (PAVMs) are defined as arteriovenous malformations (AVMs) involving subsegmental, segmental, or both types of arteries in at least 1 lung lobe and are more extensive than multiple PAVMs. Diffuse PAVMs involving systemic arterial shunts are very rare. We describe a rare case, in which diffuse PAVMs involving systemic arterial shunts were successfully treated with coil embolization.
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Affiliation(s)
- Eijun Sueyoshi
- Department of Radiological Sciences, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Hirofumi Koike
- Department of Radiological Sciences, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Hiroki Nagayama
- Department of Radiological Sciences, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Xi He
- Department of Radiological Sciences, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Ichiro Sakamoto
- Department of Radiological Sciences, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Masataka Uetani
- Department of Radiological Sciences, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
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22
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Kinoshita T, Yuzawa H, Wada R, Yano K, Yao S, Akitsu K, Koike H, Shinohara M, Abe A, Fujino T, Ogata H, Ikeda T. Electrocardiographic evaluation of depolarization and repolarization abnormalities in breast cancer patients with HER2-inhibitor related cardiac dysfunction. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.3401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
The arrhythmic substrates of the myocardium such as depolarization and repolarization abnormalities are thought to reflect cardiac dysfunction prior to the morphologic left ventricular dysfunction. Activation time (AT), recovery time (RT) and T wave peek-end interval dispersion (Tpe-dispersion) are useful indicators of the arrhythmic substrate. We examined the appearance of depolarization and repolarization abnormalities in patients with cancer therapeutics-related cardiac dysfunction (CTRCD) using AT, RT and Tpe-dispersion.
Methods
We conducted a standardized case-control study of CTRCD with 40 patients who developed breast cancer and treated with trastuzumab (13 cases and 27 controls). We assessed the relation between electrocardiographic indexes, including AT, RT and corrected Tpe-dispersion, and CTRCD. QT intervals were measured by Fridericia method, and QT observer 3 software were used for the measurement of all electrocardiographic indexes.
Results
LVEF in case and control group were 45.7±8% and 69.2±6%, respectively. AT in aVR lead was significantly higher in case group compared with control (28.8±7ms vs 22.8±5ms, P=0.02). corrected Tpe-dispersion tended to be higher in case group than that of control group (43.2±19ms vs 31.9±10ms, P=0.06). QT dispersion and RT dispersion were not different between case and control group.
Conclusions
Our study demonstrated that AT in aVR may predict cardiac dysfunction in breast cancer patients with HER2-inhibitor related cardiac dysfunction. More detailed studies using other modalities which can detect depolarization and repolarization abnormalities, including ventricular late potentials and T wave alternans, are needed.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- T Kinoshita
- Toho University Faculty of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - H Yuzawa
- Toho University Faculty of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - R Wada
- Toho University Faculty of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - K Yano
- Toho University Faculty of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - S Yao
- Toho University Faculty of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - K Akitsu
- Toho University Faculty of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - H Koike
- Toho University Faculty of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - M Shinohara
- Toho University Faculty of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - A Abe
- Toho University Faculty of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - T Fujino
- Toho University Faculty of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
| | - H Ogata
- Toho University Faculty of Medicine, Division of Breast and Endocrine Surgery (Omori), Department of Surgery, Tokyo, Japan
| | - T Ikeda
- Toho University Faculty of Medicine, Department of Cardiovascular Medicine, Tokyo, Japan
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23
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Sueyoshi E, Iwano Y, Oka T, Nishimura T, Honda T, Kawaguchi Y, Koike H, Nagayama H, Sakamoto I, Uetani M. The Successful Treatment of an Ilio-Iliac Fistula and Aneurysms Affecting the Abdominal Aortic and Iliac Arteries via Endovascular Stent Graft Repair. Vasc Endovascular Surg 2020; 55:91-94. [PMID: 32875955 DOI: 10.1177/1538574420953933] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Spontaneous ilio-iliac arteriovenous fistula (AVF) associated with aneurysms affecting the abdominal aortic and iliac arteries is a rare condition. The classical clinical symptoms of ilio-iliac AVF include high-output heart failure, abdominal pain, abdominal bruits and thrills, a pulsatile abdominal mass, and venous congestion symptoms (leg edema and hematuria). The prompt repair of AVF is necessary to restore the patient's hemodynamics. We report a case in which a patient with aneurysms affecting the abdominal aortic and iliac arteries and an ilio-iliac AVF presented with high-output heart failure and leg ischemia and was successfully treated via endovascular stent graft repair.
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Affiliation(s)
- Eijun Sueyoshi
- Department of Radiology, 12961Nagasaki University School of Medicine, Nagasaki, Japan.,Department of Radiological Science, 200674Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Yusuke Iwano
- Department of Radiology, 12961Nagasaki University School of Medicine, Nagasaki, Japan
| | - Taiga Oka
- Department of Radiology, 12961Nagasaki University School of Medicine, Nagasaki, Japan
| | - Takamasa Nishimura
- Department of Radiology, 12961Nagasaki University School of Medicine, Nagasaki, Japan
| | - Takahide Honda
- Department of Radiology, 12961Nagasaki University School of Medicine, Nagasaki, Japan
| | - Yutaro Kawaguchi
- Department of Cardiovascular Surgery, 12961Nagasaki University School of Medicine, Nagasaki, Japan
| | - Hirofumi Koike
- Department of Radiology, 12961Nagasaki University School of Medicine, Nagasaki, Japan
| | - Hiroki Nagayama
- Department of Radiology, 12961Nagasaki University School of Medicine, Nagasaki, Japan
| | - Ichiro Sakamoto
- Department of Radiology, 12961Nagasaki University School of Medicine, Nagasaki, Japan.,Department of Radiological Science, 200674Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Masataka Uetani
- Department of Radiology, 12961Nagasaki University School of Medicine, Nagasaki, Japan.,Department of Radiological Science, 200674Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
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24
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Kohjimoto Y, Higuchi M, Ueda Y, Iguchi T, Koike H, Wakamiya T, Yamashita S, Kikkawa K, Hara I. Intraoperative measurements of urethral length and bladder neck diameter as predictors of urinary continence after robot-assisted radical prostatectomy. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)33779-4] [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: 11/27/2022] Open
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25
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Sekine Y, Kotani K, Oka D, Nakayama H, Miyazawa Y, Syuto T, Arai S, Nomura M, Koike H, Matsui H, Shibata Y, Suzuki K. Usefulness of presepsin for detecting sepsis in urinary-tract infections. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)33449-2] [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] Open
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26
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Kinoshita T, Yuzawa H, Wada R, Yao S, Yano K, Akitsu K, Shinohara M, Koike H, Suzuki T, Abe A, Fujino T, Ikeda T. P93 The usefulness of dual cardiac autonomic nervous modulation assessment for prediction of mortality in patients with relatively preserved left ventricular ejection fraction. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehz872.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Recent guidelines have stated that reduced left ventricular ejection fraction (LVEF) is the gold standard marker for identifying patients at risk for cardiac mortality. Although reduced LVEF identifies patients at an increased risk of cardiac arrest, sudden cardiac deaths (SCDs) occur considerably more often in patients with relatively preserved LVEF. Current guidelines on SCDs risk stratification do not adequately cover this general population pool. Heart rate variability (HRV) and heart rate turbulence (HRT) are non-invasive electrocardiography (ECG)-based techniques capable of providing relevant information on the cardiac autonomic nervous modulation. Although a large body of evidence about autonomic nervous modulation markers has been reported, the usefulness of HRV and HRT parameters for risk stratification in such patients with relatively preserved LVEF has not yet been elucidated.
Purpose
This study aimed to evaluate HRV and HRT parameters for predicting cardiac mortality in patients with structural heart disease (SHD), including ischemic heart disease, dilated cardiomyopathy and valvular heart disease, who have mid-range left ventricular dysfunction (LVD).
Methods
We prospectively enrolled 229 patients (187 men, age 63 ± 13 years) with SHD who have mid-range LVD (LVEF > 40%). HRV and HRT parameters based on 24-hour ambulatory ECG recordings (Fukuda Denshi Co., Ltd., Tokyo, Japan) were evaluated as follows; SDNN, triangular index, high and low frequency HRV, turbulence onset and slope. The primary endpoint was all-cause mortality. Univariate and multivariate Cox regression analysis were used to assess the association between these cardiac autonomic nervous modulation and mortality.
Results
During a mean follow-up of 21 ± 11 months, all-cause mortality was seen in 11 (4.8%) patients. Univariate Cox regression analysis showed that reduced SDNN (<50ms), reduced triangular index (<20ms) and HRT category 2 were significantly associated with the primary endpoint (P < 0.05). When HRT category 2 combined with reduced SDNN, Multivariate Cox regression analysis revealed that this combination more strongly associates with the primary endpoint (hazard ratio =7.91, 95%CI, 1.82-34.2; P = 0.006).
Conclusion
Dual cardiac autonomic nervous modulation assessment which combined HRT and HRV could be a superior technique to predict mortality in patients with relatively preserved LVEF.
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Affiliation(s)
- T Kinoshita
- Toho University Faculty of Medicine, Tokyo, Japan
| | - H Yuzawa
- Toho University Faculty of Medicine, Tokyo, Japan
| | - R Wada
- Toho University Faculty of Medicine, Tokyo, Japan
| | - S Yao
- Toho University Faculty of Medicine, Tokyo, Japan
| | - K Yano
- Toho University Faculty of Medicine, Tokyo, Japan
| | - K Akitsu
- Toho University Faculty of Medicine, Tokyo, Japan
| | - M Shinohara
- Toho University Faculty of Medicine, Tokyo, Japan
| | - H Koike
- Toho University Faculty of Medicine, Tokyo, Japan
| | - T Suzuki
- Toho University Faculty of Medicine, Tokyo, Japan
| | - A Abe
- Toho University Faculty of Medicine, Tokyo, Japan
| | - T Fujino
- Toho University Faculty of Medicine, Tokyo, Japan
| | - T Ikeda
- Toho University Faculty of Medicine, Tokyo, Japan
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27
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Koike H, Watanabe I, Akitsu KATSUYA, Shinohara MASAYA, Kinoshita TOSHIO, Yuzawa HITOMI, Suzuki TAKEYA, Fujino TADASHI, Morita TOSHISUK, Ikeda TAKANORI. P11 The difference in the serial change of indoxyl sulfate after catheter ablation among atrial fibrillation patients with or without chronic kidney disease. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehz872.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
It is well known that catheter ablation (CA) for patients with atrial fibrillation (AF) improves their renal function. However, the precise mechanism of improving a renal function, such as a transition of the uremic toxin is unclear.
Purpose
Indoxyl sulfate (IS), a protein-bound uremic toxin, induces chronic kidney disease (CKD) and AF. This study aimed to investigate the transition of serum IS level in the AF patients with and without CKD after CA.
Methods
A total of 138 consecutive AF patients who underwent CA and maintained sinus rhythm were prospectively enrolled (age 65.5 ± 10.7 years, paroxysmal AF 67.4%). Patients were divided into 4 groups (non-CKD/low-IS:68, non-CKD/high-IS:28, CKD/low-IS:13, CKD/high-IS:29). CKD was defined as CKD stage III (estimated glomerular filtration rate (eGFR) 30-60 ml/min/1.73m2), and high-IS was defined according to the mean of IS (IS≥1.1 μg/ml) before CA. Plasma IS levels and eGFR were determined before and at 1 year after CA. We evaluated the relationship between the IS and eGFR after CA among the 4 groups.
Results
CA significantly improved the eGFR in patients with CKD (from 50.2 ± 5.7 to 55.4 ± 10.8 ml/min/1.73m2, p < 0.001). The serum IS level in the patients with non-CKD/high-IS was significantly decreased (from 1.7 ± 0.7 to 1.1 ± 0.6 μg/ml, p < 0.001). However, the serum IS level in the patients with CKD/high-IS was not improved (from 1.9 ± 0.9 to 1.7 ± 0.7 μg/ml, p = 0.22) and significantly higher than that in the others (p < 0.001), regardless of improving their eGFR (Figure). Furthermore, the multiple regression analysis revealed that the ΔIS, between before and after CA, was independent of eGFR.
Conclusion
The change of IS in the patients with CKD was significantly different from that in those without CKD. In the patients with CKD, CA improved their eGFR, however, the serum level of IS, a protein-bound uremic toxin, was not improved after CA.
Abstract P11 Figure. Serial Change of eGFR and IS
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Affiliation(s)
- H Koike
- Mitsui Memorial Hospital, Tokyo, Japan
| | - I Watanabe
- Toho University, Department of Cardiovascular Medicine, Tokyo, Japan
| | - KATSUYA Akitsu
- Toho University, Department of Cardiovascular Medicine, Tokyo, Japan
| | - MASAYA Shinohara
- Toho University, Department of Cardiovascular Medicine, Tokyo, Japan
| | - TOSHIO Kinoshita
- Toho University, Department of Cardiovascular Medicine, Tokyo, Japan
| | - HITOMI Yuzawa
- Toho University, Department of Cardiovascular Medicine, Tokyo, Japan
| | - TAKEYA Suzuki
- Toho University, Department of Cardiovascular Medicine, Tokyo, Japan
| | - TADASHI Fujino
- Toho University, Department of Cardiovascular Medicine, Tokyo, Japan
| | - TOSHISUK Morita
- Toho University, Department of Laboratory Medicine, Tokyo, Japan
| | - TAKANORI Ikeda
- Toho University, Department of Laboratory Medicine, Tokyo, Japan
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28
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Komatsu A, Kawakami K, Koike H, Nagamatsu T, Osuga Y, Fujii T. Uterine torsion in the second trimester of pregnancy with a large leiomyoma identified in a cesarean section for abruptio placentae: a case report and literature review. CLIN EXP OBSTET GYN 2019. [DOI: 10.12891/ceog4937.2019] [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: 11/01/2022]
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29
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Fujino T, Yuzawa H, Kinoshita T, Shinohara M, Koike H, Akitsu K, Yano K, Wada R, Suzuki T, Ikeda T. P6559Long-term follow-up and outcomes of patients with discontinuation of oral anticoagulant therapy after successful ablation procedures for atrial fibrillation. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.1149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Oral anticoagulant therapy (OAT) is effective for preventing strokes in atrial fibrillation (AF) patients. Currently, there is controversy regarding the discontinuation of OATs in patients with ablation procedures to eliminate AF.
Aim
We investigated the incidence of major bleeding and ischemic strokes/systemic embolisms in low-risk patients that discontinued OATs after successful AF ablation procedures.
Methods
Of 330 consecutive patients that underwent AF ablation procedures and were prescribed one of the direct oral anticoagulants or warfarin, 207 AF patients (158 men, mean age 61±11 years) who discontinued OATs three months after the procedure were enrolled. The average CHADS2 and HAS-BLED scores were 1.0±0.9 and 1.2±1.0, respectively, which meant that most patients had a low risk for strokes.
Results
During follow-up, 31 patients (15%) had recurrences of AF. Those patients underwent a re-ablation procedure and then re-discontinued their OATs three months after the session. During a 60±13 months follow-up, major bleeding was observed in five patients (2.4%) and was associated with a higher HAS-BLED score (2.2±0.4 vs. 1.1±1.0, P=0.027). In contrast, none of the patients experienced ischemic strokes/systemic embolisms.
Conclusions
This prospective study demonstrated that in patients with successful ablation procedures and low risk scores for AF management, OATs could be discontinued three months after the procedure. Unnecessary continuation of OATs may increase the incidence of major bleeding during the follow-up.
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Affiliation(s)
- T Fujino
- Toho University Graduate School of Medicine, Tokyo, Japan
| | - H Yuzawa
- Toho University Graduate School of Medicine, Tokyo, Japan
| | - T Kinoshita
- Toho University Graduate School of Medicine, Tokyo, Japan
| | - M Shinohara
- Toho University Graduate School of Medicine, Tokyo, Japan
| | - H Koike
- Toho University Graduate School of Medicine, Tokyo, Japan
| | - K Akitsu
- Toho University Graduate School of Medicine, Tokyo, Japan
| | - K Yano
- Toho University Graduate School of Medicine, Tokyo, Japan
| | - R Wada
- Toho University Graduate School of Medicine, Tokyo, Japan
| | - T Suzuki
- Toho University Graduate School of Medicine, Tokyo, Japan
| | - T Ikeda
- Toho University Graduate School of Medicine, Tokyo, Japan
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30
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Sueyoshi E, Koike H, Sakamoto I, Uetani M. Successful treatment of hemoptysis caused by a type 2 endoleak after thoracic endovascular aortic repair. CVIR Endovasc 2019; 1:10. [PMID: 30652143 PMCID: PMC6319520 DOI: 10.1186/s42155-018-0019-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 05/30/2018] [Indexed: 11/10/2022] Open
Abstract
Background Massive hemoptysis is a life-threatening condition and can arise as a complication of conditions. Conversely, hemoptysis rarely occurs as a complication of a ruptured thoracic aortic aneurysm (TAA). Case presentation A 76-year-old male had a history of surgical replacement of the whole aortic arch due to a TAA. Three years after the surgery, severe hemoptysis occurred, which resulted in the patient’s emergency hospitalization at our hospital. The patient was diagnosed with ruptured pseudoaneurysms of the aortic arch. Emergency thoracic endovascular aortic repair (TEVAR) was performed. . After that, the hemoptysis stopped, and the patient was discharged. Two months later, the hemoptysis reccurred so the patient was re-admitted to our hospital. CT showed a type 2 endoleak from the bronchial artery. The anastomotic pseudoaneurysms remained. As re-rupturing of the anastomotic aneurysms due to a type 2 endoleak was suspected, transcatheter arterial embolization was performed to treat the type 2 endoleak. The patient’s hemoptysis stopped, and he was discharged. One year later, CT showed that the anastomotic pseudoaneurysms had disappeared, and the diameter of the aorta had also reduced. Conclusion We present a case of hemoptysis caused by a type 2 endoleak that occurred after TEVAR for a ruptured TAA. The hemoptysis was secondary to aortobronchial fistulas caused by anastomotic aortic pseudoaneurysms. Transcatheter arterial embolization of the type 2 endoleak was very effective against the hemoptysis, and the pseudoaneurysms also disappeared. No such cases have been reported previously.
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Affiliation(s)
- Eijun Sueyoshi
- 1Department of Radiology, Nagasaki University School of Medicine, Nagasaki, Japan.,2Department of Radiological Science, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Hirofumi Koike
- 1Department of Radiology, Nagasaki University School of Medicine, Nagasaki, Japan.,2Department of Radiological Science, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Ichiro Sakamoto
- 1Department of Radiology, Nagasaki University School of Medicine, Nagasaki, Japan.,2Department of Radiological Science, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Masataka Uetani
- 1Department of Radiology, Nagasaki University School of Medicine, Nagasaki, Japan.,2Department of Radiological Science, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
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31
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Okuno T, Koseki K, Nakanishi T, Ninomiya K, Tanaka T, Sato Y, Osanai A, Sato K, Koike H, Yahagi K, Komiyama K, Aoki J, Yokozuka M, Miura S, Tanabe K. P1669Prognostic impact of computed tomography-derived abdominal fat area in patients undergoing transcatheter aortic valve implantation. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- T Okuno
- Mitsui Memorial Hospital, Division of Cardiology, Tokyo, Japan
| | - K Koseki
- Mitsui Memorial Hospital, Division of Cardiology, Tokyo, Japan
| | - T Nakanishi
- Mitsui Memorial Hospital, Division of Cardiology, Tokyo, Japan
| | - K Ninomiya
- Mitsui Memorial Hospital, Division of Cardiology, Tokyo, Japan
| | - T Tanaka
- Mitsui Memorial Hospital, Division of Cardiology, Tokyo, Japan
| | - Y Sato
- Mitsui Memorial Hospital, Division of Cardiology, Tokyo, Japan
| | - A Osanai
- Mitsui Memorial Hospital, Division of Cardiovascular Surgery, Tokyo, Japan
| | - K Sato
- Mitsui Memorial Hospital, Division of Cardiology, Tokyo, Japan
| | - H Koike
- Mitsui Memorial Hospital, Division of Cardiology, Tokyo, Japan
| | - K Yahagi
- Mitsui Memorial Hospital, Division of Cardiology, Tokyo, Japan
| | - K Komiyama
- Mitsui Memorial Hospital, Division of Cardiology, Tokyo, Japan
| | - J Aoki
- Mitsui Memorial Hospital, Division of Cardiology, Tokyo, Japan
| | - M Yokozuka
- Mitsui Memorial Hospital, Division of Anesthesia, Tokyo, Japan
| | - S Miura
- Mitsui Memorial Hospital, Division of Cardiovascular Surgery, Tokyo, Japan
| | - K Tanabe
- Mitsui Memorial Hospital, Division of Cardiology, Tokyo, Japan
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32
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Okuno T, Koseki K, Nakanishi T, Ninomiya K, Tanaka T, Sato Y, Osanai A, Sato K, Koike H, Yahagi K, Komiyama K, Aoki J, Yokozuka M, Miura S, Tanabe K. P1673Impact of objective nutritional indexes on one-year clinical outcomes after transcatheter aortic valve implanation. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- T Okuno
- Mitsui Memorial Hospital, Division of Cardiology, Tokyo, Japan
| | - K Koseki
- Mitsui Memorial Hospital, Division of Cardiology, Tokyo, Japan
| | - T Nakanishi
- Mitsui Memorial Hospital, Division of Cardiology, Tokyo, Japan
| | - K Ninomiya
- Mitsui Memorial Hospital, Division of Cardiology, Tokyo, Japan
| | - T Tanaka
- Mitsui Memorial Hospital, Division of Cardiology, Tokyo, Japan
| | - Y Sato
- Mitsui Memorial Hospital, Division of Cardiology, Tokyo, Japan
| | - A Osanai
- Mitsui Memorial Hospital, Division of Cardiovascular Surgery, Tokyo, Japan
| | - K Sato
- Mitsui Memorial Hospital, Division of Cardiology, Tokyo, Japan
| | - H Koike
- Mitsui Memorial Hospital, Division of Cardiology, Tokyo, Japan
| | - K Yahagi
- Mitsui Memorial Hospital, Division of Cardiology, Tokyo, Japan
| | - K Komiyama
- Mitsui Memorial Hospital, Division of Cardiology, Tokyo, Japan
| | - J Aoki
- Mitsui Memorial Hospital, Division of Cardiology, Tokyo, Japan
| | - M Yokozuka
- Mitsui Memorial Hospital, Division of Anesthesia, Tokyo, Japan
| | - S Miura
- Mitsui Memorial Hospital, Division of Cardiovascular Surgery, Tokyo, Japan
| | - K Tanabe
- Mitsui Memorial Hospital, Division of Cardiology, Tokyo, Japan
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33
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Koike H. [IV. How Do We Think about Generics of Anti-Cancer Agent - Focusing on Temozolomide Oral Preparation]. Gan To Kagaku Ryoho 2018; 45:938-943. [PMID: 30026418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
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34
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Koike H, Ashizawa K, Hayashi H, Sakamoto I, Nakamura S, Nishino A, Hayashi T, Uetani M. Takayasu Arteritis Presenting as Unexplained Pulmonary Consolidation: A Case Report. Vasc Endovascular Surg 2018; 52:579-582. [PMID: 29742991 DOI: 10.1177/1538574418775186] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Although Takayasu arteritis (TA) is rare as a form of chronic inflammatory arteritis, it is important that it is diagnosed early because the 10-year survival rate is only 84% to 87%. Many reported patients have been young women in East Asia. We report a case of a young woman who originally presented with unexplained pulmonary consolidation. Five years later, contrast-enhanced computed tomography (CT) imaging showed thickening of the walls of the aorta and its branches and of the main and right pulmonary artery (PA), and occlusion of the left subclavian and left PAs. A diagnosis of TA was made based on these CT findings. Patients with TA often have PA involvement, and this can be the initial site of arteritis. Therefore, TA should be included in the differential diagnosis of young women with unexplained pulmonary consolidation.
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Affiliation(s)
- Hirofumi Koike
- 1 Department of Radiological Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.,2 Department of Radiology, Nagasaki Rosai Hospital, Sasebo, Japan
| | - Kazuto Ashizawa
- 3 Department of Clinical Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Hideyuki Hayashi
- 4 Department of Radiology, Isahaya Health Insurance General Hospital, Nagasaki, Japan
| | - Ichiro Sakamoto
- 1 Department of Radiological Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Shigeki Nakamura
- 5 Department of Chemotherapy and Mycoses, National Institute of Infectious Diseases, Tokyo, Japan
| | - Ayako Nishino
- 6 Department of Immunology and Rheumatology, Unit of Advanced Preventive Medical Sciences, Nagasaki, Japan
| | - Tomayoshi Hayashi
- 7 Department of Pathology, Nagasaki Prefecture Shimabara Hospital, Nagasaki, Japan
| | - Masataka Uetani
- 1 Department of Radiological Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
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35
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Koike H, Sueyoshi E, Sakamoto I, Uetani M, Nakata T, Maemura K. Correlation between lung perfusion blood volume and SPECT images in patients with chronic thromboembolic pulmonary hypertension by balloon pulmonary angioplasty. Clin Imaging 2018; 49:80-86. [DOI: 10.1016/j.clinimag.2017.11.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2017] [Revised: 10/11/2017] [Accepted: 11/02/2017] [Indexed: 12/31/2022]
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36
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Koike H, Nagayasu T, Hayashi T, Ashizawa K. Dedifferentiated Liposarcoma Occurring in the Right Pulmonary Hilum. Intern Med 2018; 57:765-766. [PMID: 29491279 PMCID: PMC5874358 DOI: 10.2169/internalmedicine.9352-17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Hirofumi Koike
- Department of Radiological Sciences, Nagasaki University Graduate School of Biomedical Sciences, Japan
- Department of Radiology, Nagasaki Rosai Hospital, Japan
| | - Takeshi Nagayasu
- Department of Surgical Oncology, Nagasaki University Graduate School of Biomedical Sciences, Japan
| | - Tomayoshi Hayashi
- Department of Pathology, Nagasaki Prefecture Shimabara Hospital, Japan
| | - Kazuto Ashizawa
- Department of Clinical Oncology, Nagasaki University Graduate School of Biomedical Sciences, Japan
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37
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Ikeda S, Nishi R, Kawagashira Y, Iijima M, Koike H, Katsuno M, Sobue G. Clinicopathological features of CIDP subtypes. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Iijima M, Nishi R, Ikeda S, Kawagashira Y, Koike H, Katsuno M, Sobue G. Pathological features of NOD B7-2 KO mice treated by high dose immunoglobulins. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kaida K, Kadoya M, Koike H, Iijima M, Takazaki H, Ogata H, Moriguchi K, Shimizu J, Nagata E, Takizawa S, Chiba A, Yamasaki R, Kira J, Sobue G, Ikewaki K. Diagnostic utility of ELISA for anti-neurofascin 155 antibodies in chronic inflammatory demyelinating polyradiculoneuropathy. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Koike H, Kadoya M, Kaida K, Nishi R, Ikeda S, Kawagashira Y, Iijima M, Kato D, Ogata H, Yamasaki R, Matsukawa N, Kira J, Katsuno M, Sobue G. Paranodal axo-glial detachment in chronic inflammatory demyelinating polyneuropathy with anti-neurofascin-155 and anti-contactin-1 antibodies. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.226] [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: 11/26/2022]
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Koike H, Nishi R, Ikeda S, Kawagashira Y, Iijima M, Misumi Y, Ando Y, Ikeda S, Katsuno M, Sobue G. Vasculopathy in familial amyloid polyneuropathy. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Nishi R, Koike H, Ikeda S, Ohyama K, Kawagashira Y, Iijima M, Katsuno M, Sobue G. Clinicopathological features of eosinophilic granulomatosis with polyangiitis with and without antineutrophil cytoplasmic antibodies. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Kimura S, Nakanishi H, Noda S, Murakami A, Iijima M, Koike H, Katsuno M. Diagnostic value of muscle biopsy for neuromuscular diseases. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Yokota N, Miyakoshi T, Sato Y, Nakasone Y, Yamashita K, Imai T, Hirabayashi K, Koike H, Yamauchi K, Aizawa T. Predictive models for conversion of prediabetes to diabetes. J Diabetes Complications 2017; 31:1266-1271. [PMID: 28173983 DOI: 10.1016/j.jdiacomp.2017.01.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [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] [Received: 12/01/2016] [Revised: 01/01/2017] [Accepted: 01/13/2017] [Indexed: 11/20/2022]
Abstract
AIM To clarify the natural course of prediabetes and develop predictive models for conversion to diabetes. METHODS A retrospective longitudinal study of 2105 adults with prediabetes was carried out with a mean observation period of 4.7years. Models were developed using multivariate logistic regression analysis and verified by 10-fold cross-validation. The relationship between [final BMI minus baseline BMI] (δBMI) and incident diabetes was analyzed post hoc by comparing the diabetes conversion rate for low (< -0.31kg/m2) and high δBMI (≥ -0.31kg/m2) subjects after matching the two groups for the covariates. RESULTS Diabetes developed in 252 (2.5%/year), and positive family history, male sex, higher systolic blood pressure, plasma glucose (fasting and 1h- and 2h-values during 75g OGTT), hemoglobin A1c (HbA1c) and alanine aminotransferase were significant, independent predictors for the conversion. By using a risk score (RS) that took account of all these variables, incident diabetes was predicted with an area under the ROC curve (95% CI) of 0.80 (0.70-0.87) and a specificity of prediction of 61.8% at 80% sensitivity. On division of the participants into high- (n=248), intermediate- (n=336) and low-risk (n=1521) populations, the conversion rates were 40.1%, 18.5% and 5.9%, respectively. The conversion rate was lower in subjects with low than high δBMI (9.2% vs 14.4%, p=0.003). CONCLUSIONS Prediabetes conversion to diabetes could be predicted with accuracy, and weight reduction during the observation was associated with lowered conversion rate.
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Affiliation(s)
- N Yokota
- Diabetes Center, Aizawa Hospital, Matsumoto, 390-8510, Japan
| | - T Miyakoshi
- Diabetes Center, Aizawa Hospital, Matsumoto, 390-8510, Japan
| | - Y Sato
- Diabetes Center, Aizawa Hospital, Matsumoto, 390-8510, Japan
| | - Y Nakasone
- Department of Medicine, Kamiichi General Hospital, Kamiichi 930-0391, Japan
| | - K Yamashita
- Diabetes Center, Aizawa Hospital, Matsumoto, 390-8510, Japan
| | - T Imai
- Health Center, Okaya City Hospital, Okaya, 394-8512, Japan
| | - K Hirabayashi
- Health Center, Aizawa Hospital, Matsumoto, 390-8510, Japan
| | - H Koike
- Health Center, Aizawa Hospital, Matsumoto, 390-8510, Japan
| | - K Yamauchi
- Diabetes Center, Shinonoi General Hospital, 388-8004, Japan
| | - T Aizawa
- Diabetes Center, Aizawa Hospital, Matsumoto, 390-8510, Japan.
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Ueda J, Kobayashi Y, Kenko Y, Koike H, Kubo T, Tarano Y, Hara K. Distribution of Water, Fat, and Metals in Normal Liver and in Liver Metastases Influencing Attenuation on Computed Tomography. Acta Radiol 2016. [DOI: 10.1177/028418518802900107] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The quantity of water, lipid and some metals was measured in autopsy specimens of 8 normal livers, 9 livers with fatty change, and in 12 livers with metastases of various origins. These parameters contribute to the CT number measured in the liver. Water played a major role in demonstration of liver metastases as a low-density area on CT. Other contributory factors include iron, magnesium and zinc. Lipid and calcium had no influence in this respect. Heavy accumulation of calcium in a metastatic lesion gives a high-density area on CT. However, even when a metastatic lesion was perceived on CT as a low-density area, the calcium content of the lesion was not always lower than that of the non-tumour region.
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Koike H, Sueyoshi E, Sakamoto I, Uetani M, Nakata T, Maemura K. Quantification of lung perfusion blood volume (lung PBV) by dual-energy CT in patients with chronic thromboembolic pulmonary hypertension (CTEPH) before and after balloon pulmonary angioplasty (BPA): Preliminary results. Eur J Radiol 2016; 85:1607-12. [PMID: 27501896 DOI: 10.1016/j.ejrad.2016.06.016] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [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: 05/21/2016] [Accepted: 06/20/2016] [Indexed: 01/28/2023]
Abstract
OBJECTIVES Balloon pulmonary angioplasty (BPA) is a treatment option for patients with chronic thromboembolic pulmonary hypertension (CTEPH). Its effect on pulmonary perfusion has not been quantified; we examined the clinical significance of pulmonary blood volume (PBV) using dual-energy computed tomography (DECT) in patients with CTEPH undergoing BPA. METHODS In this retrospective study of 16 BPAs in eight female patients with CTEPH, we evaluated both-lung (n=16), right- or left-lung (n=32), and three right- or left-segment (upper, middle, and lower) (n=96) PBVs before and after BPA, using DECT. We evaluated the relationships between improvement in lung PBV and pulmonary artery (PA) pressure (PAP), cardiac index (CI), pulmonary vascular resistance (PVR), and 6-min walking distance. We measured PA enhancement (PAenh) on DECT images and calculated lung PBV/PAenh to adjust timing. RESULTS Pre- and post-BPA 6-segment lung PBV/PAenh were 0.067±0.021 and 0.077±0.019, respectively, in the treated segment (p<0.0001). There were significant positive correlations between pre- to post-BPA improvements in both-lung PBV/PAenh and PAP (R=0.69, p=0.005), PVR (R=0.56, p=0.03), and 6-min walking distance (R=0.67, p=0.01). CONCLUSIONS Improved PBV after BPA, reflecting increased lung perfusion, was positively correlated with PAP, PVR, and 6-min walking distance. Lung PBV may be an indicator of BPA treatment effect.
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Affiliation(s)
- Hirofumi Koike
- Department of Radiology, Nagasaki University School of Medicine, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan.
| | - Eijun Sueyoshi
- Department of Radiology, Nagasaki University School of Medicine, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan.
| | - Ichiro Sakamoto
- Department of Radiology, Nagasaki University School of Medicine, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan.
| | - Masataka Uetani
- Department of Radiology, Nagasaki University School of Medicine, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan.
| | - Tomoo Nakata
- Department of Cardiovascular medicine, Nagasaki University School of Medicine, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan.
| | - Kouji Maemura
- Department of Cardiovascular medicine, Nagasaki University School of Medicine, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan.
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Koike H, Takahashi M, Ohyama K, Hashimoto R, Kawagashira Y, Iijima M, Katsuno M, Doi H, Tanaka F, Sobue G. Clinicopathologic features of folate-deficiency neuropathy. Neurology 2015; 84:1026-33. [DOI: 10.1212/wnl.0000000000001343] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Zhang R, Takebe T, Sekine K, Koike H, Zheng Y, Taniguchi H. Identification of proliferating human hepatic cells from human induced pluripotent stem cells. Transplant Proc 2015; 46:1201-4. [PMID: 24815160 DOI: 10.1016/j.transproceed.2013.12.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2013] [Revised: 11/27/2013] [Accepted: 12/10/2013] [Indexed: 01/01/2023]
Abstract
Mass-scale production of hepatocytes from human induced pluripotent stem cells (iPSCs) with functional properties of primary hepatocytes is of great value in clinical transplantation for liver failure as well as in facilitating drug development by predicting humanized drug metabolism profiles. In this report, we generated human hepatocyte-like cells from human iPSCs with the use of a stepwise protocol. Aiming at future clinical and industrial application, it is important to determine the suitable stage of iPSC-derived hepatic cells that possess high proliferative capacity to intensively expand the hepatic cells. Ki67 immunostaining showed that human iPSC-derived hepatic endoderm cells contained Ki67(+) cells at the highest level in the middle stage of hepatic differentiation, suggesting that the abundance of proliferating hepatic progenitor cells exists in this stage. Extensive expansion and differentiation of human iPSC-derived hepatic progenitors will provide future perspectives in transplantation therapy and drug development.
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Affiliation(s)
- R Zhang
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - T Takebe
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Japan; Advanced Medical Research Center, Yokohama City University, Yokohama, Japan; PRESTO, Japan Science and Technology Agency, Kawaguchi, Japan.
| | - K Sekine
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - H Koike
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Y Zheng
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - H Taniguchi
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Japan; Advanced Medical Research Center, Yokohama City University, Yokohama, Japan.
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Fushimi K, Shiiba M, Kouzu Y, Kasama H, Higo M, Koike H, Kasamatsu A, Sakamoto Y, Ogawara K, Uzawa K, Tanzawa H. Central myofibroma of the maxilla: A case report. Journal of Oral and Maxillofacial Surgery, Medicine, and Pathology 2015. [DOI: 10.1016/j.ajoms.2013.08.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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