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Shibahara T, Nakamura K, Wakisaka Y, Shijo M, Yamanaka K, Takashima M, Takaki H, Hidaka M, Kitazono T, Ago T. PDGFR β-positive cell-mediated post-stroke remodeling of fibronectin and laminin α2 for tissue repair and functional recovery. J Cereb Blood Flow Metab 2023; 43:518-530. [PMID: 36514952 PMCID: PMC10063838 DOI: 10.1177/0271678x221145092] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Post-stroke intra-infarct repair promotes peri-infarct neural reorganization leading to functional recovery. Herein, we examined the remodeling of extracellular matrix proteins (ECM) that constitute the intact basal membrane after permanent middle cerebral artery occlusion (pMCAO) in mice. Among ECM, collagen type IV remained localized on small vessel walls surrounding CD31-positive endothelial cells within infarct areas. Fibronectin was gradually deposited from peri-infarct areas to the ischemic core, in parallel with the accumulation of PDGFRβ-positive cells. Cultured PDGFRβ-positive pericytes produced fibronectin, which was enhanced by the treatment with PDGF-BB. Intra-infarct deposition of fibronectin was significantly attenuated in pericyte-deficient Pdgfrb+/-mice. Phagocytic activity of macrophages against myelin debris was significantly enhanced on fibronectin-coated dishes. In contrast, laminin α2, produced by GFAP- and aquaporin 4-positive astrocytes, accumulated strongly in the boundary of peri-infarct areas. Pericyte-conditioned medium increased the expression of laminin α2 in cultured astrocytes, partly through TGFβ1. Laminin α2 increased the differentiation of oligodendrocyte precursor cells into oligodendrocytes and the expression of myelin-associated proteins. Peri-infarct deposition of laminin α2 was significantly reduced in Pdgfrb+/-mice, with attenuated oligodendrogenesis in peri-infarct areas. Collectively, intra-infarct PDGFRβ-positive cells may orchestrate post-stroke remodeling of key ECM that create optimal environments promoting clearance of myelin debris and peri-infarct oligodendrogenesis.
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Affiliation(s)
- Tomoya Shibahara
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Kuniyuki Nakamura
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yoshinobu Wakisaka
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Masahiro Shijo
- Department of Internal Medicine, Fukuoka Dental College Medical and Dental Hospital, Fukuoka, Japan
| | - Kei Yamanaka
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Masamitsu Takashima
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Hayato Takaki
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Masaoki Hidaka
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Takanari Kitazono
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Tetsuro Ago
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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Yamanaka K, Nakamura K, Shibahara T, Takashima M, Takaki H, Hidaka M, Komori M, Yoshikawa Y, Wakisaka Y, Ago T, Kitazono T. Deletion of Nox4 enhances remyelination following cuprizone-induced demyelination by increasing phagocytic capacity of microglia and macrophages in mice. Glia 2023; 71:541-559. [PMID: 36321558 DOI: 10.1002/glia.24292] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 10/15/2022] [Accepted: 10/18/2022] [Indexed: 11/06/2022]
Abstract
NOX4 is a major reactive oxygen species-producing enzyme that modulates cell stress responses. We here examined the effect of Nox4 deletion on demyelination-remyelination, the most common pathological change in the brain. We used a model of cuprizone (CPZ)-associated demyelination-remyelination in wild-type and Nox4-deficient (Nox4-/- ) mice. While the CPZ-induced demyelination in the corpus callosum after 4 weeks of CPZ intoxication was slightly less pronounced in Nox4-/- mice than that in wild-type mice, remyelination following CPZ withdrawal was significantly enhanced in Nox4-/- mice with an increased accumulation of IBA1-positive microglia/macrophages in the demyelinating corpus callosum. Consistently, locomotor function, as assessed by the beam walking test, was significantly better during the remyelination phase in Nox4-/- mice. Nox4 deletion did not affect autonomous growth of primary-culture oligodendrocyte precursor cells. Although Nox4 expression was higher in cultured macrophages than in microglia, Nox4-/- microglia and macrophages both showed enhanced phagocytic capacity of myelin debris and produced increased amounts of trophic factors upon phagocytosis. The expression of trophic factors was higher, in parallel with the accumulation of IBA1-positive cells, in the corpus callosum in Nox4-/- mice than that in wild-type mice. Nox4 deletion suppressed phagocytosis-induced increase in mitochondrial membrane potential, enhancing phagocytic capacity of macrophages. Treatment with culture medium of Nox4-/- macrophages engulfing myelin debris, but not that of Nox4-/- astrocytes, enhanced cell growth and expression of myelin-associated proteins in cultured oligodendrocyte precursor cells. Collectively, Nox4 deletion promoted remyelination after CPZ-induced demyelination by enhancing microglia/macrophage-mediated clearance of myelin debris and the production of trophic factors leading to oligodendrogenesis.
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Affiliation(s)
- Kei Yamanaka
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Kuniyuki Nakamura
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Tomoya Shibahara
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Masamitsu Takashima
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Hayato Takaki
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Masaoki Hidaka
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Motohiro Komori
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yoji Yoshikawa
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yoshinobu Wakisaka
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Tetsuro Ago
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Takanari Kitazono
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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Lu Y, Mitsuda C, Takaki H, Obina T, Kobayashi Y. Precise pulsed magnetic field mapping using a compact pick-up probe for a pulsed sextupole magnet. Rev Sci Instrum 2022; 93:123306. [PMID: 36586949 DOI: 10.1063/5.0111979] [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] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 11/25/2022] [Indexed: 06/17/2023]
Abstract
A pulsed sextupole magnet was used for beam injection at the KEK-Photon Factory (KEK-PF). During the top-up injection, oscillation of the stored beam was observed. To investigate this issue, a compact pick-up probe has been developed for measuring peak fields around the zero-magnetic-field region where the stored beam passes. The probe has two coils: a main coil and a background coil. The width and length of the main coil are only 3.2 and 5.8 mm, respectively. The voltage signal from the background coil is subtracted from that of the main coil to obtain an effective voltage signal. The results show that the peak field of a pulsed magnet can be measured with a sufficient accuracy for magnetic field mapping. A magnetic field signal with an amplitude of 2.2 × 10-4 T was measured clearly. The longitudinal field structure that contains the magnetic field generated by the eddy-current effect was observed, which explains the oscillation of the stored beam at the KEK-PF.
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Affiliation(s)
- Y Lu
- The Graduate University for Advanced Studies, Shonan Village, Hayama, Kanagawa 240-0193, Japan
| | - C Mitsuda
- High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - H Takaki
- High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - T Obina
- High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - Y Kobayashi
- High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
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Takashima M, Nakamura K, Kiyohara T, Wakisaka Y, Hidaka M, Takaki H, Yamanaka K, Shibahara T, Wakisaka M, Ago T, Kitazono T. Low-dose sodium-glucose cotransporter 2 inhibitor ameliorates ischemic brain injury in mice through pericyte protection without glucose-lowering effects. Commun Biol 2022; 5:653. [PMID: 35780235 PMCID: PMC9250510 DOI: 10.1038/s42003-022-03605-4] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Accepted: 06/20/2022] [Indexed: 12/11/2022] Open
Abstract
Antidiabetic sodium-glucose cotransporter 2 (SGLT2) inhibitors have attracted attention for their cardiorenal-protective properties beyond their glucose-lowering effect. However, their benefits in ischemic stroke remain controversial. Here we show the effects of luseogliflozin, a selective SGLT2 inhibitor, in acute ischemic stroke, using a permanent middle cerebral artery occlusion (pMCAO) model in non-diabetic mice. Pretreatment with low-dose luseogliflozin, which does not affect blood glucose levels, significantly attenuated infarct volume, blood-brain barrier disruption, and motor dysfunction after pMCAO. SGLT2 was expressed predominantly in brain pericytes and was upregulated in peri- and intra-infarct areas. Notably, luseogliflozin pretreatment reduced pericyte loss in ischemic areas. In cultured pericytes, luseogliflozin activated AMP-activated protein kinase α and increased mitochondrial transcription factor A expression and number of mitochondria, conferring resistance to oxygen-glucose deprivation. Collectively, pre-stroke inhibition of SGLT2 induces ischemic tolerance in brain pericytes independent of the glucose-lowering effect, contributing to the attenuation of ischemic brain injury. Pre-treatment of non-diabetic mice with the SGLT2 inhibitor, luseogliflozin, reduces brain damage and neurological dysfunction following middle cerebral artery occlusion by acquiring ischemic tolerance in pericytes.
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Affiliation(s)
- Masamitsu Takashima
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Kuniyuki Nakamura
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan.
| | - Takuya Kiyohara
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Yoshinobu Wakisaka
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Masaoki Hidaka
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Hayato Takaki
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Kei Yamanaka
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Tomoya Shibahara
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Masanori Wakisaka
- Wakisaka Internal Medicine Clinic, 1-24-19 Fujisaki, Sawara-ku, Fukuoka, 814-0013, Japan
| | - Tetsuro Ago
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Takanari Kitazono
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
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Ueshima E, Sofue K, Takaki H, Hirata Y, Kodama H, Hamada M, Matsushiro K, Sasaki K, Gentsu T, Okada T, Yamaguchi M, Yamakado K, Sugimoto K, Murakami T. Abstract No. 359 Embolization induced tumor-associated macrophage polarization in tumor immune microenvironment can be reprogrammed by lenvatinib in a rat hepatoma model. J Vasc Interv Radiol 2022. [DOI: 10.1016/j.jvir.2022.03.440] [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] Open
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Hasegawa T, Takaki H, Kodama H, Matsuo K, Yamanaka T, Nakatsuka A, Inaba Y, Gobara H, Hayashi S, Takao M, Yamakado K. Abstract No. 123 Impact of ablation margin on local tumor progression after radiofrequency ablation for lung metastases from colorectal carcinoma: supplementary analysis of phase II trial (MLCSG-0802). J Vasc Interv Radiol 2022. [DOI: 10.1016/j.jvir.2022.03.204] [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] Open
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Takaki H, Kobayashi N, Hirose K. SAKE: first-principles electron transport calculation code. J Phys Condens Matter 2020; 32:325901. [PMID: 32191926 DOI: 10.1088/1361-648x/ab8153] [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] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Accepted: 03/19/2020] [Indexed: 06/10/2023]
Abstract
We developed and implemented a numerical code called SAKE, which stands for (simulation code for atomistic Kohn-Sham equation). We developed it for first-principle electron transport calculations based on density-functional theory and non-equilibrium Green's function formalism. First, we present the central calculation parts of the formalism of the electronic states and transport properties for open and non-equilibrium systems. We show specific computational techniques, such as the use of a complex contour integration for charge density from the density matrix, which is compared with the calculation method of summing the residues of the Fermi-Dirac distribution, as well as the efficient achievement of the self-consistent procedures. Thereafter, for applications of the present computation code, SAKE, we present first-principle calculation results of three different systems. We first analyze electronic structures of polythiophene molecular wires, compare summation techniques for the density matrix. We show thermoelectric properties of an n-type antiferromagnetic semiconductor CuFeS2as a second application. The electrical conductance, electrical thermal conductance, and the Seebeck coefficients with carrier doping are examined, and the analytical form of the Seebeck coefficient is briefly described. For the third application, we analyze the electron transport properties of polyaniline molecular wires under structural deformations, i.e. rotations around the transport direction. The thermally averaged current-voltage characteristics are also analyzed. The results show that the current decreases as the temperature increases which are determined based on the competition between the thermal energy and the electronic energy, which increases with the rotation angle.
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Affiliation(s)
- H Takaki
- Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Japan
| | - N Kobayashi
- Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Japan
| | - K Hirose
- Smart Energy Research Laboratories, NEC Corporation, 34 Miyukigaoka, Tsukuba, Japan
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Takaki H, Hirata Y, Ueshima E, Kodama H, Matsumoto S, Wada R, Suzuki H, Nakasho K, Yamakado K. Abstract No. 426 Hepatic artery embolization enhance the expression of programmed cell death 1 ligand 1: an in vivo experimental study with an orthotopic rat hepatoma model. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.487] [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: 10/25/2022] Open
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Kodama H, Takaki H, Taniguchi J, Maruyama M, Ogasawara A, Kako Y, Kobayashi K, Yamakado K. 3:45 PM Abstract No. 151 Factors affecting adverse events in percutaneous lung biopsy for lesions contacting to pleura. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.185] [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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Sato T, Lopez M, Polak U, Jo N, Cortes A, Takaki H, Avritscher R. Abstract No. 604 Effect of hepatic arterial embolization on lymphatic microvascular density. J Vasc Interv Radiol 2019. [DOI: 10.1016/j.jvir.2018.12.709] [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] Open
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Haga S, Morioka T, Kameda K, Takahara K, Amano T, Tomohara S, Takaki H, Tsurusaki Y, Arihiro S. Subtraction of arterial spin-labeling magnetic resonance perfusion images acquired at dual post-labeling delay: Potential for evaluating cerebral hyperperfusion syndrome following carotid endarterectomy. J Clin Neurosci 2019; 63:77-83. [PMID: 30738738 DOI: 10.1016/j.jocn.2019.01.044] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 12/11/2017] [Revised: 01/16/2019] [Accepted: 01/28/2019] [Indexed: 11/28/2022]
Abstract
Arterial spin-labeling magnetic resonance perfusion imaging is a promising tool for the diagnosis of cerebral hyperperfusion syndrome after carotid endarterectomy. However, arterial spin-labeling with a single post-labeling delay has been reported to show a higher incidence of increased arterial spin-labeling signals in the bilateral hemisphere, probably due to a shortening of the arterial transit time or an arterial transit artifact caused by intravascular stagnant magnetically-labeled spin. To overcome these shortcomings, we used two post-labeling delay settings (1.0 and 1.5 s) in 8 patients who had undergone carotid endarterectomy. In addition, we created a subtraction image between the mean perfusion maps at post-labeling delays of 1.0 and 1.5 s. This also decreased arterial transit artifacts, as these appeared in nearly the same configuration in both post-labeling delay settings. In all eight cases examined, increased arterial spin-labeling signals were observed bilaterally on both dual post-labeling delay settings. Subtraction images revealed that these increased signals were attributable to arterial transit artifacts in seven cases. However, in one patient who developed clinical symptoms, the subtraction method demonstrated post-carotid endarterectomy hyperperfusion. This preliminary study demonstrates that the subtraction method might decrease arterial transit artifacts and yield a map that can better represent true perfusion, thus enabling the detection of post-carotid endarterectomy hyperperfusion.
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Affiliation(s)
- Sei Haga
- Department of Neurosurgery, Kyushu Rosai Hospital, Japan.
| | - Takato Morioka
- Department of Neurosurgery, Fukuoka Children's Hospital, Japan
| | | | - Kenta Takahara
- Department of Neurosurgery, Kyushu Rosai Hospital, Japan
| | | | - Saori Tomohara
- Department of Cerebrovascular Disease, Kyushu Rosai Hospital, Japan
| | - Hayato Takaki
- Department of Cerebrovascular Disease, Kyushu Rosai Hospital, Japan
| | | | - Shoji Arihiro
- Department of Cerebrovascular Disease, Kyushu Rosai Hospital, Japan
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Silman C, Matsumoto S, Mori H, Yamada Y, Otsuka A, Hongo N, Ohta M, Inomata M, Takaki H, Fukuzawa K. Evaluation of the fat plane of the pancreatic groove using multidetector CT. Clin Radiol 2018; 73:910.e7-910.e13. [DOI: 10.1016/j.crad.2018.06.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 06/04/2018] [Indexed: 01/28/2023]
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Wada R, Takaki H, Matsuda T, Tani T, Taki K, Saito H. Transcatheter embolization for the management of traumatic coronary venous injury. Diagn Interv Imaging 2018; 99:585-587. [PMID: 29716846 DOI: 10.1016/j.diii.2018.04.004] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2018] [Revised: 04/08/2018] [Accepted: 04/09/2018] [Indexed: 11/24/2022]
Affiliation(s)
- R Wada
- Department of Radiology, Sapporo Higashi Tokushukai hospital, Hokkaido, Japan.
| | - H Takaki
- Department of Radiology, Hyogo College of medicine, Hyogo, Japan
| | - T Matsuda
- Department of Emergency and Acute Care medicine, Sapporo Higashi Tokushukai hospital, Hokkaido, Japan
| | - T Tani
- Division of Cardiology, Sapporo Higashi Tokushukai hospital, Hokkaido, Japan
| | - K Taki
- Department of Emergency and Acute Care medicine, Sapporo Higashi Tokushukai hospital, Hokkaido, Japan
| | - H Saito
- Department of Radiology, Sapporo Higashi Tokushukai hospital, Hokkaido, Japan
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Takaki H, Hirata Y, Ueshima E, Kobayashi K, Kako Y, Taniguchi J, Yamakado K. Abstract No. 445 Hypoxic stress induces the overexpression of programmed death ligand 1 and chemokine ligand 17 on rat hepatoma cell lines. J Vasc Interv Radiol 2018. [DOI: 10.1016/j.jvir.2018.01.490] [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: 11/24/2022] Open
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15
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Kako Y, Kobayashi K, Taniguchi J, Takaki H, Yamakado K. Abstract No. 643 Balloon-occluded retrograde transvenous obliteration from pericardial vein to eradicate gastric varices. J Vasc Interv Radiol 2018. [DOI: 10.1016/j.jvir.2018.01.688] [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] Open
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Takaki H, Cornelis F, Kako Y, Kobayashi K, Kamikonya N, Yamakado K. Thermal ablation and immunomodulation: From preclinical experiments to clinical trials. Diagn Interv Imaging 2017; 98:651-659. [DOI: 10.1016/j.diii.2017.04.008] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2017] [Revised: 04/23/2017] [Accepted: 04/24/2017] [Indexed: 12/30/2022]
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Kawakami S, Takaki H, Hashimoto S, Aiba T, Kusano K, Yasuda S, Kamakura S, Sugimachi M. P774Magnetocardiography can disclose delayed left ventricular conduction and predict cardiac events in non-ischemic dilated cardiomyopathy patients with narrow QRS. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.p774] [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: 11/12/2022] Open
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Srimathveeravalli G, Abdel-Atti D, Perez-Medina C, Takaki H, Solomon S, Mulder W, Reiner T. Imaging reversible electroporation enhanced liposomal doxorubicin delivery in mouse tumors using radiolabeled nanoparticles. J Vasc Interv Radiol 2017. [DOI: 10.1016/j.jvir.2016.12.603] [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] Open
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Takaki H, Yamakado K, Kuriyama N, Nakatsuka A, Sakuma H, Isaji S. Percutaneous drainage of pancreatic fistula following pancreatectomy with CT-fluoroscopic guidance. Diagn Interv Imaging 2017; 98:43-50. [DOI: 10.1016/j.diii.2016.05.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2016] [Revised: 05/07/2016] [Accepted: 05/13/2016] [Indexed: 12/26/2022]
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Kobayashi K, Hirota S, Kako Y, Yamamoto S, Takaki H, Yamakado K. Changes in liver stiffness on real-time tissue elastography before and after occlusion of spontaneous portosystemic shunts. Diagn Interv Imaging 2016; 98:321-326. [PMID: 27663139 DOI: 10.1016/j.diii.2016.08.011] [Citation(s) in RCA: 4] [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] [Received: 04/24/2016] [Revised: 08/23/2016] [Accepted: 08/25/2016] [Indexed: 12/12/2022]
Abstract
PURPOSE This study was conducted to evaluate changes in liver stiffness, volume, and function before and after occlusion of spontaneous portosystemic shunt. MATERIALS & METHODS Twenty-four patients (13 men and 11 women) with a mean age of 68.2 years±10.1 (SD) (age range, 49-82 years) underwent percutaneous occlusion of spontaneous portosystemic shunt because of gastric varices (n=17) or hepatic encephalopathy (n=7) from March 2011 to June 2013. The liver fibrosis index indicating liver stiffness was calculated by using ultrasound elastography before and after shunt occlusion. Liver volume and liver profile were also evaluated. RESULTS Spontaneous portosystemic shunt occlusion was uneventfully performed in all patients. The mean liver fibrosis index was significantly decreased from 2.7±1.0 before shunt occlusion to 2.0±0.9 (P<0.001) at 1 month, 2.2±1.0 at 3 months (P=0.004), and 1.6±0.7 at 6 months (P=0.001) afterwards. A significant increase in the liver volume was observed from 1035.3±340.1mL before shunt occlusion to 1116.8±298.4mL (P=0.006) at 1 month and 1174.2±354.1mL (P<0.001) at 3 months afterwards. Significant improvement in the Child-Pugh score was also found at 1 month (6.2±1.4, P<0.001), 3 months (6.5±1.1, P=0.022), and 6 months (6.0±0.9, P=0.004) after shunt occlusion as compared with that (7.2±1.9) before. CONCLUSION The liver stiffness decreases along with an increase in liver volume and improvement in liver function after spontaneous portosystemic shunt occlusion.
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Affiliation(s)
- K Kobayashi
- Department of Radiology, Hyogo College of Medicine, 1-1 Mukogawacho, 663-8501 Nishinomiya, Hyogo, Japan.
| | - S Hirota
- Department of Radiology, Hyogo College of Medicine, 1-1 Mukogawacho, 663-8501 Nishinomiya, Hyogo, Japan.
| | - Y Kako
- Department of Radiology, Hyogo College of Medicine, 1-1 Mukogawacho, 663-8501 Nishinomiya, Hyogo, Japan.
| | - S Yamamoto
- Department of Radiology, Hyogo College of Medicine, 1-1 Mukogawacho, 663-8501 Nishinomiya, Hyogo, Japan.
| | - H Takaki
- Department of Radiology, Hyogo College of Medicine, 1-1 Mukogawacho, 663-8501 Nishinomiya, Hyogo, Japan.
| | - K Yamakado
- Department of Radiology, Hyogo College of Medicine, 1-1 Mukogawacho, 663-8501 Nishinomiya, Hyogo, Japan.
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Kitamura T, Gotoh S, Takaki H, Kiyuna F, Yoshimura S, Fujii K. [A case of vitamin B12 deficiency with involuntary movements and bilateral basal ganglia lesions]. Rinsho Shinkeigaku 2016; 56:499-503. [PMID: 27356735 DOI: 10.5692/clinicalneurol.cn-000884] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
An 86-year-old woman with a one-year history of dementia was admitted to our hospital complaining of loss of appetite, hallucinations, and disturbance of consciousness. She gradually presented with chorea-like involuntary movements of the extremities. Diffusion-weighted magnetic resonance imaging (MRI) showed bilateral symmetrical hyperintense signals in the basal ganglia. The serum vitamin B12 level was below the lower detection limit of 50 pg/ml. The homocysteine level was markedly elevated at 115.8 nmol/ml. Anti-intrinsic factor and anti-parietal cell antibody tests were positive. Gastrointestinal endoscopy revealed atrophic gastritis. The patient was diagnosed with encephalopathy due to vitamin B12 deficiency caused by pernicious anemia. Involuntary movements and MRI abnormalities improved with parenteral vitamin B12 supplementation. Bilateral basal ganglia lesions are rare manifestations of adult vitamin B12 deficiency. The present case is considered valuable in identifying the pathophysiology of involuntary movement due to vitamin B12 deficiency.
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Affiliation(s)
- Taisuke Kitamura
- Department of Cerebrovascular Disease, Fukuoka Red Cross Hospital
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Lee K, Takaki H, Yarmohammadi H, Srimathveeravalli G, Luchins K, Monette S, Nair S, Kishore S, Erinjeri J. Pleural puncture which excludes the ablation zone decreases the risk of pneumothorax after percutaneous microwave ablation in porcine lung. J Vasc Interv Radiol 2015. [DOI: 10.1016/j.jvir.2014.12.236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Srimathveeravalli G, Takaki H, Monette S, Solomon S, Durack J. Catheter directed irreversible electroporation of the swine common bile duct. J Vasc Interv Radiol 2015. [DOI: 10.1016/j.jvir.2014.12.519] [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] Open
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Nair S, Takaki H, Thomas C, Lee K, Ziv E, Covey A, Sofocleous C, Solomon S, Erinjeri J. Image-guided thermal ablation of tumors increases the plasma level of hepatocyte growth factor. J Vasc Interv Radiol 2015. [DOI: 10.1016/j.jvir.2014.12.317] [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] Open
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Takaki H, Thomas C, Srimathveeravalli G, Yarmohammadi H, Sofocleous C, Solomon S, Erinjeri J. Heat-based ablation increases the proportions of circulating Th1 and cytotoxic lymphocytes more than cryoablation. J Vasc Interv Radiol 2015. [DOI: 10.1016/j.jvir.2014.12.316] [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] Open
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Cornelis F, Takaki H, Laskhmanan M, Durack JC, Erinjeri JP, Getrajdman GI, Maybody M, Sofocleous CT, Solomon SB, Srimathveeravalli G. Comparison of CT Fluoroscopy-Guided Manual and CT-Guided Robotic Positioning System for In Vivo Needle Placements in Swine Liver. Cardiovasc Intervent Radiol 2014; 38:1252-60. [PMID: 25376924 DOI: 10.1007/s00270-014-1016-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Accepted: 09/08/2014] [Indexed: 01/08/2023]
Abstract
PURPOSE To compare CT fluoroscopy-guided manual and CT-guided robotic positioning system (RPS)-assisted needle placement by experienced IR physicians to targets in swine liver. MATERIALS AND METHODS Manual and RPS-assisted needle placement was performed by six experienced IR physicians to four 5 mm fiducial seeds placed in swine liver (n = 6). Placement performance was assessed for placement accuracy, procedure time, number of confirmatory scans, needle manipulations, and procedure radiation dose. Intra-modality difference in performance for each physician was assessed using paired t test. Inter-physician performance variation for each modality was analyzed using Kruskal-Wallis test. RESULTS Paired comparison of manual and RPS-assisted placements to a target by the same physician indicated accuracy outcomes was not statistically different (manual: 4.53 mm; RPS: 4.66 mm; p = 0.41), but manual placement resulted in higher total radiation dose (manual: 1075.77 mGy/cm; RPS: 636.4 mGy/cm; p = 0.03), required more confirmation scans (manual: 6.6; RPS: 1.6; p < 0.0001) and needle manipulations (manual: 4.6; RPS: 0.4; p < 0.0001). Procedure time for RPS was longer than manual placement (manual: 6.12 min; RPS: 9.7 min; p = 0.0003). Comparison of inter-physician performance during manual placement indicated significant differences in the time taken to complete placements (p = 0.008) and number of repositions (p = 0.04) but not in other study measures (p > 0.05). Comparison of inter-physician performance during RPS-assisted placement suggested statistically significant differences in procedure time (p = 0.02) and not in other study measures (p > 0.05). CONCLUSIONS CT-guided RPS-assisted needle placement reduced radiation dose, number of confirmatory scans, and needle manipulations when compared to manual needle placement by experienced IR physicians, with equivalent accuracy.
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Affiliation(s)
- F Cornelis
- Interventional Radiology Service, Department of Radiology, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA.,Department of Radiology, Pellegrin Hospital, Place Amélie Raba Léon, 33076, Bordeaux, France
| | - H Takaki
- Interventional Radiology Service, Department of Radiology, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA
| | - M Laskhmanan
- Perfint Healthcare Inc, Chennai, Tamil Nadu, India
| | - J C Durack
- Interventional Radiology Service, Department of Radiology, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA
| | - J P Erinjeri
- Interventional Radiology Service, Department of Radiology, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA
| | - G I Getrajdman
- Interventional Radiology Service, Department of Radiology, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA
| | - M Maybody
- Interventional Radiology Service, Department of Radiology, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA
| | - C T Sofocleous
- Interventional Radiology Service, Department of Radiology, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA
| | - S B Solomon
- Interventional Radiology Service, Department of Radiology, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA
| | - G Srimathveeravalli
- Interventional Radiology Service, Department of Radiology, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA.
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Srimathveeravalli G, Takaki H, Lakshmanan M, Cornelis F, Getrajdman G, Sofocleous C, Maybody M, Durack J, Erinjeri J, Solomon S. Evaluation of a CT guided robotic positioning system to minimize needle manipulation during placements to small in vivo targets. J Vasc Interv Radiol 2014. [DOI: 10.1016/j.jvir.2013.12.345] [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: 10/25/2022] Open
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Litchman T, Erinjeri J, Takaki H, Maybody M, Getrajdman G, Sofocleous C, Alago W, Brown K, Solomon S, Covey A. Hepatic artery embolization for metastatic gastrointestinal stromal tumor following imatinib and sunitinib therapy. J Vasc Interv Radiol 2014. [DOI: 10.1016/j.jvir.2013.12.182] [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: 11/29/2022] Open
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Iwakami N, Aiba T, Kamakura S, Takaki H, Nakajima I, Miyamoto K, Okamura H, Noda T, Shimizu W, Sugimachi M. Noninvasive evaluation of benign or malignant early repolarization pattern using high resolution magnetocardiography. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p5591] [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: 11/14/2022] Open
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Kimura K, Takaki H, Yamada Y, Noda T, Satomi K, Aiba T, Kamakura S, Yasuda S, Shimizu W, Sugimachi M. Magnetocardiographic analysis predicts future lethal arrhythmic events in patients with arrhythmogenic right ventricular cardiomyopathy. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p4965] [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: 11/12/2022] Open
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Nakashima T, Takaki H, Usami S, Yamada Y, Okamura H, Aiba T, Yasuda S, Kamakura S, Shimizu W, Sugimachi M. Multi-directional ventricular conduction on magnetocardiography predicts poor prognosis after CRT implantation. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.1917] [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: 11/13/2022] Open
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Fujimori M, Takaki H, Nakatsuka A, Uraki J, Yamanaka T, Hasegawa T, Shiraki K, Takei Y, Sakuma H, Yamakado K. Combination therapy of chemoembolization and radiofrequency ablation for the treatment of hepatocellular carcinoma: 10-year outcomes and prognostic factors. J Vasc Interv Radiol 2013. [DOI: 10.1016/j.jvir.2013.01.285] [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: 10/27/2022] Open
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Yamao Y, Yamakado K, Takaki H, Yamada T, Kodama H, Nagasawa N, Nakatsuka A, Uraki J, Takeda K. CT-fluoroscopy in chest interventional radiology: sliding scale of imaging parameters based on radiation exposure dose and factors increasing radiation exposure dose. Clin Radiol 2012; 68:162-6. [PMID: 22906574 DOI: 10.1016/j.crad.2012.05.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2012] [Revised: 05/26/2012] [Accepted: 05/29/2012] [Indexed: 11/16/2022]
Abstract
AIM To verify the usefulness of a sliding scale of imaging parameters to reduce radiation exposure during chest interventional radiology (IR), and to identify factors that increase radiation exposure in order to obtain acceptable computed tomography (CT)-fluoroscopy image quality. MATERIALS AND METHODS The institutional review board approved this retrospective study, for which the need for informed consent was waived. Interventional radiologists determined the optimal CT-fluoroscopy imaging parameters using the sliding scale based on the radiation exposure dose. The imaging parameters were changed from those generating low radiation (120 kV/10 mA, 1.2 mGy/s) to others generating higher radiation exposure until acceptable image quality was obtained for each procedure. Validation of the imaging parameter sliding scale was done using regression analysis. Factors that increase radiation exposure were identified using multiple regression analysis. RESULTS In 125 patients, 217 procedures were performed, of which 72 procedures (33.2%, 72/217) were performed with imaging parameters of minimum radiation exposure, but increased radiation exposure was necessary in 145 (66.8%, 145/217). Significant correlation was found between the radiation exposure dose and the percentage achievement of acceptable image quality (R(2) = 0.98). Multivariate regression analysis showed that high body weight (p < 0.0001), long device passage (p < 0.0001), and lesions above the aortic arch (p = 0.04) were significant independent factors increasing radiation exposure. CONCLUSION Although increased radiation exposure dose might be necessary to obtain acceptable chest CT-fluoroscopy images depending on the patient, lesion, and procedure characteristics, a sliding scale of imaging parameters helps to reduce radiation exposure.
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Affiliation(s)
- Yoshikazu Yamao
- Department of Radiology, Mie University Hospital, Tsu, Japan.
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Fujimori M, Yamakado K, Takaki H, Nakatsuka A, Kashima M, Uraki J, Yamanaka T, Hasegawa T. Abstract No. 20: Hepatocellular carcinoma in the caudate lobe: radiofrequency ablation combined with chemoembolization under the real-time CT-fluoroscopic guidance. J Vasc Interv Radiol 2012. [DOI: 10.1016/j.jvir.2011.12.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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Yamanaka T, Yamakado K, Nakatsuka A, Uraki J, Kashima M, Takaki H, Fujimori M, Hasegawa T, Takeda K. Abstract No. 25: Radiofrequency ablation for liver metastasis from gastrointestinal stromal tumor. J Vasc Interv Radiol 2012. [DOI: 10.1016/j.jvir.2011.12.059] [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] Open
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Hasegawa T, Yamakado K, Takaki H, Nakatsuka A, Uraki J, Kashima M, Yamanaka T, Fujimori M. Abstract No. 15: Hyaluronic acid gel injection to protect adjacent gastro intestine in percutaneous liver radiofrequency ablation: initial experience. J Vasc Interv Radiol 2012. [DOI: 10.1016/j.jvir.2011.12.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Takaki H, Yamakado K, Nakatsuka A, Uraki J, Kashima M, Fujimori M, Yamanaka T, Hasegawa T. Abstract No. 275: Radiofrequency ablation of renal cell carcinoma using a multiple electrode switching system: a phase-II clinical study. J Vasc Interv Radiol 2012. [DOI: 10.1016/j.jvir.2011.12.329] [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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Ueda R, Nakatsuka A, Yamakado K, Yamanaka T, Kodama H, Takaki H, Kashima M, Uraki J, Inaba T, Takeda K. Abstract No. 198: Osteoporotic rabbit lumbar spine model following radiofrequency ablation: Evaluation of physical properties and micro CT-histopathologic correlation. J Vasc Interv Radiol 2011. [DOI: 10.1016/j.jvir.2011.01.218] [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: 11/29/2022] Open
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Takaki H, Yamakado K, Nakatsuka A, Uraki J, Kashima M, Yamanaka T, Takeda K. Abstract No. 143: CT fluoroscopy-guided radiofrequency ablation following intra-arterial iodized-oil injection for hepatocellular carcinomas invisible on US images. J Vasc Interv Radiol 2011. [DOI: 10.1016/j.jvir.2011.01.158] [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: 11/29/2022] Open
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Hamada A, Yamakado K, Nakatsuka A, Uraki J, Kashima M, Takaki H, Yamanaka T, Takeda K. Abstract No. 275: Prognositic factors after radiofrequency ablation for nonresectable colorectal cancer liver metastases. J Vasc Interv Radiol 2011. [DOI: 10.1016/j.jvir.2011.01.303] [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] Open
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Kogure S, Kodama H, Yamakado K, Yamada T, Takaki H, Kashima M, Uraki J, Nakatsuka A, Yamanaka T, Takeda K. Abstract No. 29: Lung radiofrequency ablation: Factors affecting ablative zone size. J Vasc Interv Radiol 2011. [DOI: 10.1016/j.jvir.2011.01.032] [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] Open
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Okada F, Ando Y, Nakayama T, Tanoue S, Ishii R, Ono A, Watanabe M, Takaki H, Maeda T, Mori H. Pulmonary thin-section CT findings in acute Moraxella catarrhalis pulmonary infection. Br J Radiol 2010; 84:1109-14. [PMID: 21123308 DOI: 10.1259/bjr/42762966] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
OBJECTIVE Moraxella catarrhalis is an important pathogen in the exacerbation of chronic obstructive pulmonary disease. The aim of this study was to assess the clinical and pulmonary thin-section CT findings in patients with acute M. catarrhalis pulmonary infection. METHODS Thin-section CT scans obtained between January 2004 and March 2009 from 292 patients with acute M. catarrhalis pulmonary infection were retrospectively evaluated. Clinical and pulmonary CT findings in the patients were assessed. Patients with concurrent infection including Streptococcus pneumoniae (n = 72), Haemophilus influenzae (n = 61) or multiple pathogens were excluded from this study. RESULTS The study group comprised 109 patients (66 male, 43 female; age range 28-102 years; mean age 74.9 years). Among the 109 patients, 34 had community-acquired and 75 had nosocomial infections. Underlying diseases included pulmonary emphysema (n = 74), cardiovascular disease (n = 44) or malignant disease (n = 41). Abnormal findings were seen on CT scans in all patients and included ground-glass opacity (n = 99), bronchial wall thickening (n = 85) and centrilobular nodules (n = 79). These abnormalities were predominantly seen in the peripheral lung parenchyma (n = 99). Pleural effusion was found in eight patients. No patients had mediastinal and/or hilar lymph node enlargement. CONCLUSIONS M. catarrhalis pulmonary infection was observed in elderly patients, often in combination with pulmonary emphysema. CT manifestations of infection were mainly ground-glass opacity, bronchial wall thickening and centilobular nodules.
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Affiliation(s)
- F Okada
- Department of Radiology, Faculty of Medicine, Oita University, Oita, Japan.
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Yamakado K, Takaki H, Uraki J, Nakatsuka A, Kashima M, Takeda K. Abstract No. 72: Long-Term Results of Radiofrequency Ablation in Colorectal Lung Metastases: Single Center Experience. J Vasc Interv Radiol 2009. [DOI: 10.1016/j.jvir.2008.12.061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Takaki H, Yamakado K, Nakatsuka A, Uraki J, Kashima M, Takeda K. Abstract No. 20: CT-Guided RF Ablation Combined with Chemoembolization for Subphrenic Hepatocellular Carcinomas. J Vasc Interv Radiol 2009. [DOI: 10.1016/j.jvir.2008.12.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Takaki H, Yamakado K, Nakatsuka A, Uraki J, Kashima M, Takeda K. Abstract No. 14: Featured Abstract. J Vasc Interv Radiol 2009. [DOI: 10.1016/j.jvir.2008.12.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Kashima M, Yamakado K, Nakatsuka A, Takaki H, Kaminou T, Tanigawa N, Takeda K. Abstract No. 73: Prognostic Factors After Radiofrequency Ablation for Bone Metastases from Hepatocellular Carcinoma: A Multicenter Study. J Vasc Interv Radiol 2009. [DOI: 10.1016/j.jvir.2008.12.062] [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: 11/29/2022] Open
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Nakatsuka A, Yamakado K, Takaki H, Uraki J, Kashima M, Takeda K. Abstract No. 77: Radiofrequency Ablation in Ex Vivo Swine Spine; Evaluation of Micro Computed Tomography-Histopathologic Correlation. J Vasc Interv Radiol 2009. [DOI: 10.1016/j.jvir.2008.12.066] [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] Open
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Fuke H, Sugimoto K, Shiraki K, Tanaka J, Beppu T, Yoneda K, Yamamoto N, Ito K, Takaki H, Nakatsuka A, Yamakado K, Takeda K, Takei Y. Predictive factors for distant recurrence of HCV-related hepatocellular carcinoma after radiofrequency ablation combined with chemoembolization. Aliment Pharmacol Ther 2008; 27:1253-60. [PMID: 18221404 DOI: 10.1111/j.1365-2036.2008.03627.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [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: 12/11/2022]
Abstract
BACKGROUND Radiofrequency ablation (RFA) therapy for hepatocellular carcinoma has enabled good local control to be possible. However, after successful local control, distant recurrences frequently occur in the remnant liver. AIM To identify the predictive factors for distant recurrence after RFA. METHODS A total of 117 patients with initial non-advanced hepatocellular carcinoma with HCV who underwent RFA in our hospital were selected for this study. After transcatheter chemoembolization, RFA was performed under real-time computed tomography-fluoroscopic guidance. We studied survival rates, local (adjacent to treated tumour) and distant (intrahepatic site distant from the treated tumours) recurrence rates, as well as predictive factors for distant recurrence. RESULTS After RFA, survival rates were 98.2% and 64.7% at 1 and 5 years, respectively. Child B patients had a significantly worse survival than Child A. Recurrence rates were 2.4% at 5 years for local, and 17.1% and 76.9% at 1 and 5 years, respectively, for distant. The Kaplan-Meier method revealed significantly high recurrence rates in cases with low albumin levels (Alb < 3.5 g/dL), high aspartate aminotransferase levels (AST > 60 IU/L), high alanine aminotransferase levels (ALT > 60 IU/L), low platelet counts (Plt < 10 x 10(4)/microL), and high alpha-fetoprotein levels (AFP > 50 ng/mL). On multivariate analysis, low Alb levels and high AST levels were independent predictive factors for distant recurrence. CONCLUSIONS Although RFA enables good local control for initial hepatocellular carcinoma, distant recurrence is observed at high rates in HCV patients. Low albumin and high AST levels are predictive factors for distant recurrence.
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Affiliation(s)
- H Fuke
- Department of Gastroenterology, Mie University School of Medicine, Tsu, Mie, Japan
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Yamakado K, Takaki H, Nakatsuka A, Nagai M, Matsuda S, Suzuki H, Takeda K. Case report: Radiofrequency ablation for the treatment of painful isolated wound recurrence after resection of gastric cancer. Br J Radiol 2008; 81:e100-2. [PMID: 18344264 DOI: 10.1259/bjr/17144155] [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: 11/05/2022] Open
Abstract
A 75-year-old woman underwent radiofrequency (RF) ablation for the treatment of two painful disseminated tumours that appeared and rapidly became larger at the anterior abdominal wound 16 months after she had undergone surgery for gastric cancer. RF ablation was performed under CT-fluoroscopic guidance for both tumours, which measured 5 cm and 3 cm in maximum diameter. Pain was relieved immediately after RF ablation, and both tumours showed significant involution upon physical examination and CT studies. The patient is still alive 15 months after RF ablation, with no evidence of tumour recurrence.
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Affiliation(s)
- K Yamakado
- Department of Radiology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan.
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Takaki H, Yamakado K, Nakatsuka A, Uraki J, Takeda K. Abstract No. 107: Radiofrequency Ablation Combined with Chemoembolization for the Treatment of Large Hepatocellular Carcinomas. J Vasc Interv Radiol 2008. [DOI: 10.1016/j.jvir.2007.12.119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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