Takakazu Yokoyama
Overview
Explore the profile of Takakazu Yokoyama including associated specialties, affiliations and a list of published articles.
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Articles
13
Citations
158
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Recent Articles
1.
Kohriyama T, Mihara C, Yokoyama T, Torii T, Yamada A, Takamatsu K, et al.
J Stroke Cerebrovasc Dis
. 2014 Feb;
23(6):1485-90.
PMID: 24560246
Background: Clopidogrel is sometimes substituted for ticlopidine when cerebrovascular or cardiovascular patients develop hematologic abnormalities after ticlopidine treatment. However, the adverse event rate after the substitution to clopidogrel remains undetermined....
2.
Ohta T, Yachi K, Ogino A, Yokoyama T, Fukushima T, Watanabe T, et al.
Neuropathology
. 2010 Feb;
30(6):615-20.
PMID: 20113405
Pleomorphic granular cell astrocytoma in the pineal region is exceedingly rare, and its clinicopathological features are distinctive. A 67-year-old woman was admitted with a staggering gait. Magnetic resonance imaging revealed...
3.
Yoshino A, Katayama Y, Ogino A, Watanabe T, Yachi K, Ohta T, et al.
J Neurooncol
. 2007 Jan;
83(2):153-62.
PMID: 17216555
Aberrant hypermethylation of CpG islands in the promoter region plays a causal role in the inactivation of various key genes involved in the cell cycle regulatory cascade, which could result...
4.
Yoshino A, Katayama Y, Yokoyama T, Watanabe T, Ogino A, Ota T, et al.
J Neurooncol
. 2005 Sep;
74(3):249-60.
PMID: 16187022
The precise mechanisms governing the direct effect of IFN-beta, including apoptosis induction, are not yet fully understood. To gain a better insight into these mechanisms, we investigated the signaling pathways...
5.
Fukushima T, Katayama Y, Watanabe T, Yoshino A, Komine C, Yokoyama T
J Neurooncol
. 2005 Jun;
72(2):103-6.
PMID: 15925988
Gangliogliomas are characterized by their different phenotypic composition of ganglion cells and glial cells. In contrast to the glial cells that are capable of mitotic activity, the ganglion cells are...
6.
Ogino A, Yoshino A, Katayama Y, Watanabe T, Ota T, Komine C, et al.
J Neuropathol Exp Neurol
. 2005 May;
64(5):398-403.
PMID: 15892297
Pituitary adenomas are common benign intracranial neoplasms. However, their tumorigenesis is not yet clearly defined. Inactivation of genes involved in the negative cell-cycle regulatory p15(INK4b) - p16(INK4a) -cyclin D/CDK4-RB1-mediated pathway...
7.
Yokoyama T, Yoshino A, Katayama Y, Watanabe T, Kashima Y, Yoshikawa T, et al.
Neurol Med Chir (Tokyo)
. 2004 Feb;
44(1):47-52.
PMID: 14959938
A 63-year-old man presented with rapidly progressive visual field deficit and hypopituitarism including diabetes insipidus, 8 years after treatment for a renal cell carcinoma. Neuroimaging studies revealed a dumbbell-shaped pituitary...
8.
Watanabe T, Katayama Y, Yoshino A, Komine C, Yokoyama T
Clin Cancer Res
. 2003 Oct;
9(13):4884-90.
PMID: 14581362
Purpose: The chromosome 9p21 region harbors three tumor suppressor genes, p14(ARF), p15(INK4b), and p16(INK4a), all of which can be targets for hypermethylation-associated inactivation in low-grade gliomas. p16(INK4a) and p15(INK4b) are...
9.
Watanabe T, Komine C, Yokoyama T, Yoshino A, Katayama Y
No Shinkei Geka
. 2003 Jul;
31(7):767-73.
PMID: 12884791
Diffuse astrocytomas are slowly growing tumors with a relatively long overall survival. Considerable controversy exists as to the best therapeutic management for patients with such tumors. In the present study,...
10.
Yoshino A, Katayama Y, Fukushima T, Watanabe T, Komine C, Yokoyama T, et al.
J Neurooncol
. 2003 Jun;
63(2):155-62.
PMID: 12825819
Clinical and histopathological evaluations are inadequate for assessing biological aggressiveness and regrowth potential in benign pituitary adenomas. To develop reliable and prognostically informative means of predicting behavior remains an intractable...