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991.
Kojiro Nagai Kenji Tsuchida Noriyuki Ishihara Naoto Minagawa Go Ichien Satoshi Yamada Daisuke Hirose Hiroyuki Michiwaki Hiro‐omi Kanayama Toshio Doi Jun Minakuchi 《Therapeutic apheresis and dialysis : official peer-reviewed journal of the International Society for Apheresis, the Japanese Society for Apheresis, the Japanese Society for Dialysis Therapy》2018,22(1):96-97
992.
Hiroyuki Okada Hiroshi Kajiya Yasunori Omata Takumi Matsumoto Yuiko Sato Tami Kobayashi Satoshi Nakamura Yosuke Kaneko Shinya Nakamura Takuma Koyama Shunichi Sudo Masashi Shin Fujio Okamoto Hisato Watanabe Naohiro Tachibana Jun Hirose Taku Saito Toshiyuki Takai Morio Matsumoto Masaya Nakamura Koji Okabe Takeshi Miyamoto Sakae Tanaka 《Journal of bone and mineral research》2019,34(9):1744-1752
CTLA4-Ig (cytotoxic T-lymphocyte antigen 4-immunoglobulin; Abatacept) is a biologic drug for rheumatoid arthritis. CTLA4 binds to the CD80/86 complex of antigen-presenting cells and blocks the activation of T cells. Although previous reports showed that CTLA4-Ig directly inhibited osteoclast differentiation, the whole inhibitory mechanism of CTLA4-Ig for osteoclast differentiation is unclear. Bone marrow macrophages (BMMs) from WT mice were cultured with M-CSF and RANKL with or without the recombinant mouse chimera CTLA4-Ig. Intracellular calcium oscillations of BMMs with RANKL were detected by staining with calcium indicator fura-2 immediately after administration of CTLA4-Ig or after one day of treatment. Calcium oscillations were analyzed using Fc receptor gamma- (FcRγ-) deficient BMMs. CTLA4-Ig inhibited osteoclast differentiation and reduced the expression of the nuclear factor of activated T cells NFATc1 in BMMs in vitro. Calcium oscillations in BMMs were suppressed by CTLA4-Ig both immediately after administration and after one day of treatment. CTLA4-Ig did not affect osteoclastogenesis and did not cause remarkable changes in calcium oscillations in FcRγ-deficient BMMs. Finally, to analyze the effect of CTLA4-Ig in vivo, we used an LPS-induced osteolysis model. CTLA4-Ig suppressed LPS-induced bone resorption in WT mice, not in FcRγ-deficient mice. In conclusion, CTLA4-Ig inhibits intracellular calcium oscillations depending on FcRγ and downregulates NFATc1 expression in BMMs. © 2019 American Society for Bone and Mineral Research. 相似文献
993.
Journal of Neurology - A prospective study focused on whether vestibular symptoms are seen in acute hemispheric strokes, and if so, the frequency and lateralization of causative lesions on MRI.... 相似文献
994.
Yamin Qian Xin Wu Yuhki Yokoyama Daisuke Okuzaki Mai Taguchi Haruka Hirose Jiaqi Wang Tsuyoshi Hata Akira Inoue Masayuki Hiraki Masahisa Ohtsuka Hidekazu Takahashi Naotsugu Haraguchi Tsunekazu Mizushima Shinji Tanaka Masaki Mori Hirofumi Yamamoto 《Cancer science》2019,110(11):3520-3532
Cancer stem cells (CSC) are a subpopulation of tumor cells with properties of high tumorigenicity and drug resistance, which lead to recurrence and poor prognosis. Although a better understanding of CSC is essential for developing cancer therapies, scarcity of the CSC population has hindered such analyses. The aim of the present study was to elucidate whether the E‐cadherin‐Fc chimera protein (E‐cad‐Fc) enhances cancer stem‐like properties because studies show that soluble E‐cadherin stimulates human epithelial growth factor receptor (EGFR) and downstream signaling pathways that are reported to play a crucial role in CSC. For this purpose, we used ornithine decarboxylase (ODC)‐degron–transduced (Degron(+)) KM12SM cells as a CSC model that retains relatively low CSC properties. Compared to cultures without E‐cad‐Fc treatment, we found that E‐cad‐Fc treatment further suppressed proteasome activity and largely enhanced cancer stem‐like properties of ODC‐degron–transduced KM12SM cells. These results include increased expression of stem cell markers Lgr5, Bmi‐1, SOX9, CD44, and CD44v9, aldehyde dehydrogenase (ALDH), and enhancement of robust spheroid formation, and chemoresistance to 5‐fluorouracil (5‐FU) and oxaliplatin (L‐OHP). These effects could be attributed to activation of the EGFR pathway as identified by extensive phosphorylation of EGFR, ERK, PI3K, AKT, and mTOR. In SW480 cells, E‐cad‐Fc matrix induced some CSC markers such as CD44v9 and ALDH. We also found that E‐cad‐Fc matrix showed high efficiency of inducing mesenchymal changes in colon cancer cells. Our data suggest that the E‐cad‐Fc matrix may enhance CSC properties such as enhancement of chemoresistance and sphere formation. 相似文献
995.
Koichi Ogura Kosuke Uehara Toru Akiyama Yusuke Shinoda Shintaro Iwata Satoshi Tsukushi Eisuke Kobayashi Takeshi Hirose Tsukasa Yonemoto Makoto Endo Yoshikazu Tanzawa Fumihiko Nakatani Hirotaka Kawano Sakae Tanaka Akira Kawai 《Journal of orthopaedic science》2019,24(3):539-547
BackgroundAccording to improved functional outcome and life expectancy in orthopaedic oncology patients, there has been a growing interest in not only oncologic and functional outcomes but also health-related quality of life (HRQOL), including body image, mental status, or social activities, after surgery. However, there has been a lack of disease-specific measures focusing on the ability of orthopaedic oncology patients to evaluate their HRQOL comprehensively. Therefore, our aims in the present study were 1) to develop a patient-oriented disease-specific outcome measure of HRQOL for musculoskeletal oncology patients (COMMON-LE), and 2) to examine the practical applicability, reliability and validity of the COMMON-LE for patients with musculoskeletal tumors in the lower extremity.MethodsThe COMMON-LE was developed by expert committee of orthopaedic oncology and rehabilitation. A total of 101 patients were surveyed using the COMMON-LE, as well as the TESS, the MSTS score, and the SF-36, to assess their psychometric characteristics, including reliability, validity, and responsiveness.ResultsThe COMMON-LE showed no marked floor and ceiling effects. Test-retest reliability and internal consistency determined using the intraclass correlation coefficient (0.928) and Cronbach's alpha (0.948–0.968), respectively, were excellent. Each domain of the COMMON-LE (pain, ADL, socioemotional condition and general health) was well correlated with the scores of the standard measures (SF-36, TESS, MSTS score). Factor analysis and the AIC network showed the questionnaire items of the COMMON-LE were clearly separable into three clusters according to their content, corresponding to each domain of the questionnaire.ConclusionsWe have successfully developed and validated a disease-specific measure, the COMMON-LE, to evaluate not only physical function, but also various aspects of HRQOL in patients with musculoskeletal tumors. The COMMON-LE has sufficient reliability and internal consistency, and good validity, and appears to be practically applicable to this group of patients. 相似文献
996.
Soichiro Shimizu Disuke Hirose Nayuta Namioka Hidekazu Kanetaka Kentaro Hirao Hirokuni Hatanaka Naoto Takenoshita Yoshitsugu Kaneko Yusuke Ogawa Takahiko Umahara Hirofumi Sakurai Haruo Hanyu 《Annals of nuclear medicine》2017,31(5):390-398
Objective
It is widely known that there is low striatal 123I-FP-CIT dopamine transporter-single photon emission tomography (DAT-SPECT) uptake in patients with dementia with Lewy bodies (DLB). We assessed the correlation between symptom and regional low DAT uptake in the striatum.Methods
Patients with Alzheimer’s disease (AD) (n?=?95) and patients with DLB (n?=?133) who underwent DAT-SPECT were enrolled. We examined the correlation between symptoms [cognitive function decline, fluctuations, visual hallucinations, parkinsonism, and REM sleep behavior disorder (RBD)] and regional striatal DAT uptake in the patients with DLB.Results
When comparing the DLB patients with or without fluctuations, visual hallucinations, or RBD, there were no significant differences in DAT uptake in any regions of the striatum. DLB patients with parkinsonism had significantly lower DAT uptake in entire striatum, entire putamen, and anterior putamen compared to DLB patients without parkinsonism. Moreover, there was weak but significant correlation between severity of parkinsonism and DAT uptake in entire regions of the striatum in patients with DLB. There was no significant correlation between cognitive function and DAT uptake in any regions of the striatum in patients with DLB.Conclusions
In patients with DLB, only parkinsonism is associated with a reduction in striatal DAT uptake.997.
A sporadic case of Creutzfeldt–Jakob disease showing unilateral hemispheric involvement on magnetic resonance imaging
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998.
Naohisa?YoshidaEmail author Yuji?Naito Ritsu?Yasuda Takaaki?Murakami Ryohei?Hirose Kiyoshi?Ogiso Yutaka?Inada Osamu?Dohi Kazuhiro?Kamada Kazuhiko?Uchiyama Osamu?Handa Hideyuki?Konishi Rafiz?Abdul?Rani Mitsuo?Kishimoto Eiichi?Konishi Yoshito?Itoh 《International journal of colorectal disease》2017,32(9):1253-1260
Purpose
Linked color imaging (LCI) by laser endoscopy is a novel narrow band light observation. In this study, we analyzed the efficacy of LCI for improving the various featured colorectal polyp’s visibility utilizing a subjective endoscopist’s visibility scoring and objective color difference (CD) value.Methods
We retrospectively reviewed two pictures both with white light (WL) and LCI for 54 consecutive neoplastic polyps 2–20 mm in size. All pictures were evaluated by four endoscopists according to a published polyp visibility score from four (excellent visibility) to one (poor visibility). Additionally, we calculated CD value between each polyp and surrounding mucosa in LCI and WL using an original software.Results
The mean polyp visibility scores of LCI (3.11 ± 1.05) were significantly higher than those of WL (2.50 ± 1.09, P < 0.001). The ratio of an endoscopist’s poor visibility (polyp visibility scores 1 and 2) was significantly lower in LCI (27.9%) than WL (55.6%, P < 0.001). With respect to the CD analysis, the CD value of LCI was significantly higher than that of WL (33.3 ± 13.9 vs. 20.7 ± 13.6, P < 0.001). In a subgroup analysis, the polyp visibility scores and CD values of LCI about 24 diminutive polyps (≤5 mm) were higher than those of WL (3.29 ± 0.99 vs. 2.12 ± 0.99, P < 0.001; 31.6 ± 12.8 vs. 14.7 ± 7.6, P < 0.001). Additionally, the polyp visibility scores and CD values of LCI for polyps with any location, size, histology, and morphology were significantly higher than those of WL.Conclusions
LCI improved the various featured polyp’s visibility compared to WL in both polyp visibility scores and CD value.999.
Taksoo Kim Loc Tan Huynh Shizuka Hirose Manabu Igarashi Takahiro Hiono Norikazu Isoda Yoshihiro Sakoda 《Viruses》2021,13(8)
The GPE− strain is a live attenuated vaccine for classical swine fever (CSF) developed in Japan. In the context of increasing attention for the differentiating infected from vaccinated animals (DIVA) concept, the achievement of CSF eradication with the GPE− proposes it as a preferable backbone for a recombinant CSF marker vaccine. While its infectious cDNA clone, vGPE−, is well characterized, 10 amino acid substitutions were recognized in the genome, compared to the original GPE− vaccine seed. To clarify the GPE− seed availability, this study aimed to generate and characterize a clone possessing the identical amino acid sequence to the GPE− seed. The attempt resulted in the loss of the infectious GPE− seed clone production due to the impaired replication by an amino acid substitution in the viral polymerase NS5B. Accordingly, replication-competent GPE− seed variant clones were produced. Although they were mostly restricted to propagate in the tonsils of pigs, similarly to vGPE−, their type I interferon-inducing capacity was significantly lower than that of vGPE−. Taken together, vGPE− mainly retains ideal properties for the CSF vaccine, compared with the seed variants, and is probably useful in the development of a CSF marker vaccine. 相似文献
1000.
Hirose Y Watanabe K Minami A Nakamura T Oguri H Oikawa H 《The Journal of antibiotics》2011,64(1):117-122
Quinomycin antibiotics, represented by echinomycin, are an important class of antitumor antibiotics. We have recently succeeded in identification of biosynthetic gene clusters of echinomycin and SW-163D, and have achieved heterologous production of echinomycin in Escherichia coli. In addition, we have engineered echinomycin non-ribosomal peptide synthetase to generate echinomycin derivatives. However, the biosynthetic pathways of intercalative chromophores quinoxaline-2-carboxylic acid (QXC) and 3-hydroxyquinaldic acid (HQA), which are important for biological activity, were not fully elucidated. Here, we report experiments involving incorporation of a putative advanced precursor, (2S, 3R)-[6'-(2)H]-3-hydroxy-L-kynurenine, and functional analysis of the enzymes Swb1 and Swb2 responsible for late-stage biosynthesis of HQA. On the basis of these experimental results, we propose biosynthetic pathways for both QXC and HQA through the common intermediate 3-hydroxy-L-kynurenine. 相似文献