Search Results 1-20 of 150

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The progress of the technology of magnetic resonance imaging in the field of geriatric psychiatry [in Japanese]

安野史彦

老年精神医学雑誌 31(3), 219-226, 2020-03

Ichushi Web
2

Glymphatic imaging using MRI

Taoka Toshiaki , Naganawa Shinji

… The glymphatic system is hypothesized to be a waste clearance system of the CSF through the perivascular and interstitial spaces in the brain. … Phase contrast evaluation is a powerful method for visualizing flow within the CSF space. …

Journal of Magnetic Resonance Imaging 51(1), 11-24, 2020-01

IR
3

Neuroanatomical architecture supporting brain–immune cell–cell interactions [in Japanese]

Shimada Atsuyoshi

… Our studies using bone marrow chimeric mice have indicated that brain structures such as the leptomeninges, choroid plexus stroma and epithelium, attachments of choroid plexus, vascular endothelial cells, cells of the perivascular space, circumventricular organs, and astrocytic endfeet construct the histological architecture that provides a location for intercellular interactions between bone marrow-derived myeloid lineage cells and brain parenchymal cells under non-inflammatory conditions. …

JOURNAL OF THE KYORIN MEDICAL SOCIETY 51(3), 169-177, 2020

J-STAGE
4

Anatomical structure and physiological functions of the perivascular and paravascular spaces in vivo [in Japanese]

石川智愛

医学のあゆみ 270(13), 1210-1213, 2019-09-28

Ichushi Web
5

Small vessel disease and Alzheimer's disease ; the glymphatic pathway in amyloid beta clearance system [in Japanese]

Shindo Akihiro

… There are two major type of clearance system through cerebrospinal fluid (CSF) and interstitial fluid (ISF), which are divided into perivascular drainage pathway and glymphatic pathway. … CSF flows through the periarterial space and across the astroglial endfeet which express aquaporin 4 (AQP4) channels. … Mixed CSF and ISF are driven into the perivenous space. …

Neurological Therapeutics 36(4), 524-527, 2019

J-STAGE Ichushi Web
6

PEComa Arising from the Parapharyngeal Space [in Japanese]

Nakatani Ayaka , Matsushiro Naoki , Miyoshi Tsuyoshi , Aruga Kenji

… Perivascular epithelioid cell tumors (PEComas) are rare tumors that were reported in the WHO classification for the first time in 2002. … PEComa is a mesenchymal tumor derived from a multipotential perivascular epithelioid cell. … Here, we report the first case of a PEComa arising from the parapharyngeal space. … She had a tumor 6.5 cm in diameter with calcification in the right parapharyngeal space. …

Nihon Kikan Shokudoka Gakkai Kaiho 70(6), 389-397, 2019

J-STAGE Ichushi Web
7

Signal Intensity of the Cerebrospinal Fluid after Intravenous Administration of Gadolinium-based Contrast Agents: Strong Contrast Enhancement around the Vein of Labbe

Ohashi Toshio , Naganawa Shinji , Ogawa Eriko , Katagiri Toshio , Kuno Kayao

… The perivascular space (PVS) in the basal ganglia, CSF spaces in the ambient cistern (CSF-Amb), the CSF surrounding the superficial middle cerebral vein (CSF-SMCV), and the CSF surrounding the vein of Labbe (CSF-VL) were segmented on MRC. … = 0.023).Conclusion: The strong contrast enhancement of CSF space around the vein of Labbe was confirmed on hT2W-3D-FLAIR at 4 h after IV-GBCA compared to the PVS and the other CSF spaces. …

Magnetic Resonance in Medical Sciences 18(3), 194-199, 2019

J-STAGE Ichushi Web
8

Changing the Currently Held Concept of Cerebrospinal Fluid Dynamics Based on Shared Findings of Cerebrospinal Fluid Motion in the Cranial Cavity Using Various Types of Magnetic Resonance Imaging Techniques

MATSUMAE Mitsunori , KURODA Kagayaki , YATSUSHIRO Satoshi , HIRAYAMA Akihiro , HAYASHI Naokazu , TAKIZAWA Ken , ATSUMI Hideki , SORIMACHI Takatoshi

… The "cerebrospinal fluid (CSF) circulation theory" of CSF flowing unidirectionally and circulating through the ventricles and subarachnoid space in a downward or upward fashion has been widely recognized. …

Neurologia medico-chirurgica 59(4), 133-146, 2019

J-STAGE Ichushi Web
9

Autopsy case of acute pulmonary thromboembolism with neurosyphilis

Kondo Takeshi , Takahashi Motonori , Kuse Azumi , Morichika Mai , Nakagawa Kanako , Sakurada Makoto , Asano Migiwa , Ueno Yasuhiro

… Histological examination showed lymphocyte infiltration into the perivascular space of the brain tissue with no vasculitis. …

Egyptian Journal of Forensic Sciences (8), 47, 2018-12

IR
10

Impact of the Glymphatic System on the Kinetic and Distribution of Gadodiamide in the Rat Brain: Observations by Dynamic MRI and Effect of Circadian Rhythm on Tissue Gadolinium Concentrations

Taoka Toshiaki , Jost Gregor , Frenzel Thomas , Naganawa Shinji , Pietsch Hubertus

… Objectives: The glymphatic system is a recently hypothesized waste clearance system of the brain in which perivascular space constitutes a pathway similar to the lymphatic system in other body regions. …

Investigative Radiology 53(9), 529-534, 2018-09

IR
11

Differences in Signal Intensity and Enhancement on MR Images of the Perivascular Spaces in the Basal Ganglia versus Those in White Matter

Naganawa Shinji , Nakane Toshiki , Kawai Hisashi , Taoka Toshiaki

… Purpose: To elucidate differences between the perivascular space (PVS) in the basal ganglia (BG) versus that found in white matter (WM) using heavily T2-weighted FLAIR (hT2-FL) in terms of 1) signal intensity on non-contrast enhanced images, and 2) the degree of contrast enhancement by intravenous single dose administration of gadolinium based contrast agent (IV-SD-GBCA).Materials and Methods: Eight healthy men and 13 patients with suspected endolymphatic …

Magnetic Resonance in Medical Sciences 17(4), 301-307, 2018

J-STAGE Ichushi Web
12

Gadolinium-based Contrast Media, Cerebrospinal Fluid and the Glymphatic System: Possible Mechanisms for the Deposition of Gadolinium in the Brain

Taoka Toshiaki , Naganawa Shinji

… According to this hypothesis, the perivascular space functions as a conduit for cerebrospinal fluid to flow into the brain parenchyma. … The perivascular space around the arteries allows cerebrospinal fluid to enter the interstitial space of the brain tissue through water channels controlled by aquaporin 4. … The cerebrospinal fluid entering the interstitial space clears waste proteins from the tissue. …

Magnetic Resonance in Medical Sciences 17(2), 111-119, 2018

J-STAGE Ichushi Web
13

Relationship between Contrast Enhancement of the Perivascular Space in the Basal Ganglia and Endolymphatic Volume Ratio

Ohashi Toshio , Naganawa Shinji , Katagiri Toshio , Kuno Kayao

… While repeating the examination, we speculated that the contrast enhancement of the perivascular space (PVS) in the basal ganglia might be related to the degree of EH. …

Magnetic Resonance in Medical Sciences 17(1), 67-72, 2018

J-STAGE Ichushi Web
14

Evaluation of glymphatic system activity with the diffusion MR technique: diffusion tensor image analysis along the perivascular space (DTI-ALPS) in Alzheimer's disease cases

Taoka Toshiaki , Masutani Yoshitaka , Kawai Hisashi , Nakane Toshiki , Matsuoka Kiwamu , Yasuno Fumihiko , Kishimoto Toshifumi , Naganawa Shinji

… We evaluated the activity of the human glymphatic system in cases of AD with a diffusion-based technique called diffusion tensor image analysis along the perivascular space (DTI-ALPS). …

Japanese Journal of Radiology 35(4), 172-178, 2017-04

IR Ichushi Web
15

Methylmercury induces hyaluronan synthesis in cultured human brain microvascular endothelial cells and pericytes via different mechanisms

Hirooka Takashi , Yoshida Eiko , Eto Komyo , Kaji Toshiyuki

… After exposure to methylmercury, hyaluronan largely accumulates in perivascular space, where it contributes to the progression of edematous changes. …

The Journal of Toxicological Sciences 42(3), 329-333, 2017

J-STAGE
16

Bone Marrow Endothelial Cells Induce Immature and Mature B Cell Egress in Response to Erythropoietin

Ito Takeshi , Hamazaki Yoko , Takaori-Kondo Akifumi , Minato Nagahiro

… immature B cells and recirculating mature B cells, which usually reside in the perivascular and intravascular space, from the bone marrow within 24 h. …

Cell Structure and Function 42(2), 149-157, 2017

J-STAGE Ichushi Web
17

Lack of Contrast Enhancement in a Giant Perivascular Space of the Basal Ganglion on Delayed FLAIR Images: Implications for the Glymphatic System

Naganawa Shinji , Nakane Toshiki , Kawai Hisashi , Taoka Toshiaki

Magnetic Resonance in Medical Sciences 16(2), 89-90, 2017

J-STAGE Ichushi Web
18

Gd-based Contrast Enhancement of the Perivascular Spaces in the Basal Ganglia

Naganawa Shinji , Nakane Toshiki , Kawai Hisashi , Taoka Toshiaki

… Purpose: In textbooks, the perivascular space (PVS) is described as non-enhancing after the intravenous administration of gadolinium-based contrast agent (IV-GBCA). … It is possible that the GBCA in the blood vessels might have permeated into the cerebrospinal fluid (CSF) space and the PVS. …

Magnetic Resonance in Medical Sciences 16(1), 61-65, 2017

J-STAGE Ichushi Web
19

Pediatric Hydrocephalus : Pathophysiological Concept and Treatment [in Japanese]

Karibe Hiroshi , Hayashi Toshiaki , Narisawa Ayumi , Kameyama Motonobu , Tominaga Teiji

… In the 20th century, the major CSF pathway was elucidated as follows : the majority of CSF was produced from choroid plexuses, passing through the ventricles to the subarachnoid space, then absorbed from the arachnoid granules. … The minor CSF pathway was proposed as CSF exchanges among transependymal, intraparenchymal, perivascular, and interstitial spaces. …

Japanese Journal of Neurosurgery 25(4), 300-306, 2016

J-STAGE Ichushi Web
20

Neuro-neutrophilic disease suspected by human leukocyte antigen (HLA) typing and brain biopsy: a case report [in Japanese]

Nakanishi Etsuro , Sawamura Masanori , Maruhama Shinichiro , Yamada Hiroshi , Kim Gan , Harada Kiyoshi

… In the perivascular space, the infiltration of neutrophils or histiocytes was observed. …

Rinsho Shinkeigaku 55(1), 13-17, 2015

J-STAGE Ichushi Web

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