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46 results on '"Watabe, Takeya"'

24. Cerebral Syphilitic Gumma Can Arise Within Months of Reinfection: A Case of Histologically Proven Treponema pallidum Strain Type 14b/f Infection With Human Immunodeficiency Virus Positivity.

Author

Yusuke Koizumi, Takeya Watabe, Yasunori Ota, Shu-ichi Nakayama, Nobuhiro Asai, Mao Hagihara, Yuka Yamagishi, Hiroyuki Suematsu, Toyonori Tsuzuki, Masakazu Takayasu, Makoto Ohnishi, Hiroshige Mikamo, Koizumi, Yusuke, Watabe, Takeya, Ota, Yasunori, Nakayama, Shu-Ichi, Asai, Nobuhiro, Hagihara, Mao, Yamagishi, Yuka, and Suematsu, Hiroyuki

Published
2018
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25. An update on three dimensional CT angiography in aneurysms: a useful modality for a neurosurgeon

Author

Hirose Yuichi, Chen Sifang, Hayakawa Motoharu, Imizu Shuei, Yoko Kato, Ashish Kumar, Watabe Takeya, Oda Junpei, and Oguri Daikichi

Subjects
medicine.medical_specialty, Modality (human–computer interaction), Subarachnoid hemorrhage, medicine.diagnostic_test, business.industry, Gold standard, Angiography, Digital Subtraction, Intracranial Aneurysm, Digital subtraction angiography, medicine.disease, Cerebral Angiography, Imaging, Three-Dimensional, Aneurysm, Angiography, Humans, Medicine, Surgery, Medical physics, cardiovascular diseases, Neurology (clinical), Neurosurgery, Radiology, Tomography, X-Ray Computed, business, Computed tomography angiography
Abstract

The role of three-dimensional computed tomography angiography (3D-CTA) in management of aneurysms has been fairly acknowledged in the past. There have been numerous articles in the literature regarding its potential threat to the conventional "gold standard", i.e. digital subtraction angiography (DSA). We study the technology used at a tertiary care hospital in Japan which performs a large number of aneurysm surgeries a year and review the recent literature to gain an insight into the current role of 3D-CTA in detection of aneurysms and if it can be a front line modality of investigation from a neurosurgeon's point of view. At many centres including those in India, DSA is still treated as the first choice of investigation. Although 3D CTA has some limitations, it can provide an unmatched multi-directional view of the aneurysmal morphology and its surroundings including relations with the skull base and blood vessels. This may provide an invaluable help to a neurosurgeon who is usually concerned about many other associated factors involved in approaching an aneurysm.

Published
2013
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28. Interleukin-6, MCP-1, IP-10, and MIG are sequentially expressed in cerebrospinal fluid after subarachnoid hemorrhage.

Author

Aichi Niwa, Koji Osuka, Takahiro Nakura, Naoki Matsuo, Takeya Watabe, Masakazu Takayasu, Niwa, Aichi, Osuka, Koji, Nakura, Takahiro, Matsuo, Naoki, Watabe, Takeya, and Takayasu, Masakazu

Subjects
INTERLEUKIN-6, MONOCYTE chemotactic factor, CHEMOKINES, MONOKINES, INTERFERON gamma, CEREBROSPINAL fluid, SUBARACHNOID hemorrhage, CYTOKINES, GENE expression, INFLAMMATORY mediators, INTERLEUKINS, DIAGNOSIS
Abstract

Background: Interleukin-6 (IL-6), an inflammatory cytokine, plays important roles in cerebrospinal fluid (CSF) after subarachnoid hemorrhage (SAH). Chemokines are chemoattractant cytokines that regulate trafficking of monocytes/macrophages and lymphocytes to sites of inflammation. However, no studies have been reported regarding the temporal expression of these cytokines in CSF after SAH.Findings: The concentrations of IL-6, monocyte chemoattractant protein-1 (MCP-1), interferon-γ-inducible protein-10 (IP-10), and monokine induced by interferon-γ (MIG) in the CSF of ten patients with SAH were measured using ELISA kits over a period of 14 days. All aneurysms were located in the anterior circulation. CSF samples from patients with unruptured aneurysms were used as controls. The concentration of IL-6 significantly increased during the acute stage of the disease. The concentration of MCP-1 increased from days 1 to 5, peaking on day 3, and decreased thereafter. The concentrations of IP-10 and MIG progressively increased, peaked on day 5, and then gradually decreased. There were strong correlations between the maximum levels of IL-6 and MCP-1 and IP-10 and MIG on day 5. The maximum level of IL-6 was much higher in poor outcome patients than in good outcome patients.Conclusions: The present investigation demonstrated that increases in IL-6 levels may induce the expression of MCP-1 in CSF after SAH, followed by increases in the expression of IP-10 and MIG. Dynamic changes in the levels of these cytokines may induce inflammation and may be closely associated with the development of delayed ischemic neurological deficits after SAH. [ABSTRACT FROM AUTHOR]

Published
2016
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31. Tandem balloon test occlusion for a large unruptured aneurysm associated with persistent primitive trigeminal artery: technical note

Author

TANAKA, Teppei, primary, SADATO, Akiyo, additional, HAYAKAWA, Motoharu, additional, OOMURA, Masahiro, additional, MAEDA, Shingo, additional, ADACHI, Kazuhide, additional, WATABE, Takeya, additional, HIRAMATSU, Hisaya, additional, IMIZU, Shuei, additional, NEGORO, Makoto, additional, and HIROSE, Yuichi, additional

Published
2012
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34. Disseminated neurenteric cyst

Author

Yasuda, Muneyoshi, primary, Nakagawa, Hiroshi, additional, Ozawa, Hiroaki, additional, Inukai, Chikage, additional, Watabe, Takeya, additional, Mizuno, Junichi, additional, and Takayasu, Masakazu, additional

Published
2008
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44. Contralateral Approach to Unruptured Superior Hypophyseal Artery Aneurysms.

Author

Kato, Y., Kumar, Ashish, Sinha, Rohan, Oguri, Daikichi, Oda, Jumpei, Watabe, Takeya, Imizu, Shuei, Sano, Hirotoshi, and Hirose, Yuichi

Subjects
ANEURYSM treatment, RETROSPECTIVE studies, HEALTH outcome assessment, SURGICAL complications, OPTIC nerve, CAROTID artery diseases, PHYSIOLOGY
Abstract

Objective To evaluate the feasibility and limitations of the contralateral approach to unruptured superior hypophyseal artery (SHA) aneurysms. Methods Data regarding eight cases of superior hypophyseal artery aneurysms operated on by a contralateral pterional approach at our center from January 2008 to September 2010 were collected and evaluated retrospectively. Of these eight cases, six were male and two were female. The mean age was 57.1 years (range 28 years to 77 years). All the aneurysms were unruptured; five were on right side and three were on left side. The surgical technique and outcome of patients were reviewed. Results All aneurysms were successfully clipped without complication and patency of all superior hypophyseal arteries was preserved. Postoperative three-dimensional computed tomography angiography revealed residual aneurysm in only one case. None of the patients had deterioration of visual acuity or field after surgery. The contralateral pterional approach was found to be appropriate for fully exposing the aneurysmal dome and neck without retraction of the optic nerve or the carotid artery in five cases. Slight retraction of the optic nerve was required in two cases, and significant manipulation of the optic nerve was required in one case. Conclusions The contralateral pterional approach for clipping of unruptured superior hypophyseal artery aneurysms is technically feasible and safe in a select group of patients where optimal results can be achieved without significant retraction of near by neurovascular structures. [ABSTRACT FROM AUTHOR]

Published
2013
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45. Surgical resection of cerebral arteriovenous malformation combined with pre-operative embolisation

Author

Hongo, Kazuhiro, Koike, George, Isobe, Masanori, Watabe, Takeya, Morota, Nobuhito, and Nakagawa, Hiroshi

Abstract

To assess the importance of pre-operative embolisation, 27 cases of cerebral artriovenous malformation (AVM) treated in this institute between July 1994 and October 1998 were analysed. The patients’ ages ranged from 3 to 70 years (average 36.9) with a follow-up period of 1–41 months (average 19.2). The patient presented with haemorrhage in 21 cases and seizure in five. In 21 of 27 cases, surgical resection of a nidus was performed, gamma knife therapy was applied in three and conservative therapy was chosen in three. Of 21 cases treated surgically, total removal was achieved in 19 cases and a residual nidus was seen in one (a large basal ganglia AVM). In the remaining case, postoperative angiography was not available. Pre-operative embolisation followed by surgical resection of the nidus was performed in seven cases in which there was a large AVM. A volume index was calculated to indicate the size of the nidus using X × Y × Z, where X is the maximum diameter (cm) of the nidus on the lateral angiogram, Y is the diameter (cm) perpendicular to X and Z is the maximum diameter (cm) on the anteroposter or angiogram. The index averaged 45.9 for the cases in which pre-operative embolisation was performed, while it was 5.6 in the cases without embolisation. Pre-operative embolisation was performed to reduce the nidus flow as much as possible, to prevent overload to the surrounding structures. At surgery, the nidus was resected from the surrounding tissue and care was taken not to enter the nidus. Postoperatively, the systolic blood pressure was maintained at 90–100 mmHg for several days in the intensive care unit. The results were excellent in 15 cases, good in three (hemiparesis due to the initial haemorrhage remained in all three), fair in one (a patient with a severe subarachnoid haemorrhage). Two patients died (acute pulmonary oedema and severe meningitis). Minor postoperative bleeding or oozing was seen in three cases. In conclusion, reducing the shunt flow through a nidus in a step-wise fashion with pre-operative embolisation of a large AVM seems to be quite helpful in preventing postoperative haemodynamic overload to the surrounding brain. It is also important not to enter the nidus when it is removed at surgery. This helps to prevent intraoperative and/or postoperative bleeding, and led to successful total removal of the nidus with a good postoperative course. Copyright 2000 Harcourt Publishers Ltd

Published
2000
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