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https://www.readbyqxmd.com/read/29238000/elevation-of-serum-acid-sphingomyelinase-activity-in-children-with-acute-respiratory-syncytial-virus-bronchiolitis
#1
Shuichiro Yoshida, Atsuko Noguchi, Wataru Kikuchi, Hiroshi Fukaya, Kiyoshi Igarashi, Tsutomu Takahashi
Acid sphingomyelinase (ASM) is a lysosomal enzyme that hydrolyzes sphingomyelin into ceramide, a bioactive lipid to regulate cellular physiological functions. Thus, ASM activation has been reported as a key event in pathophysiological reactions including inflammation, cytokine release, oxidative stress, and endothelial damage in human diseases. Since ASM activation is associated with extracellular ASM secretion through unknown mechanisms, it can be detected by recognizing the elevation of secretory ASM (S-ASM) activity...
2017: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/29236701/anti-leukemic-activity-of-bortezomib-and-carfilzomib-on-b-cell-precursor-all-cell-lines
#2
Kazuya Takahashi, Takeshi Inukai, Toshihiko Imamura, Mio Yano, Chihiro Tomoyasu, David M Lucas, Atsushi Nemoto, Hiroki Sato, Meixian Huang, Masako Abe, Keiko Kagami, Tamao Shinohara, Atsushi Watanabe, Shinpei Somazu, Hiroko Oshiro, Koshi Akahane, Kumiko Goi, Jiro Kikuchi, Yusuke Furukawa, Hiroaki Goto, Masayoshi Minegishi, Shotaro Iwamoto, Kanji Sugita
Prognosis of childhood acute lymphoblastic leukemia (ALL) has been dramatically improved. However, prognosis of the cases refractory to primary therapy is still poor. Recent phase 2 study on the efficacy of combination chemotherapy with bortezomib (BTZ), a proteasome inhibitor, for refractory childhood ALL demonstrated favorable clinical outcomes. However, septic death was observed in over 10% of patients, indicating the necessity of biomarkers that could predict BTZ sensitivity. We investigated in vitro BTZ sensitivity in a large panel of ALL cell lines that acted as a model system for refractory ALL, and found that Philadelphia chromosome-positive (Ph+) ALL, IKZF1 deletion, and biallelic loss of CDKN2A were associated with favorable response...
2017: PloS One
https://www.readbyqxmd.com/read/29230240/utility-of-endoscopic-examination-in-the-diagnosis-of-acute-graft-versus-host-disease-in-the-lower-gastrointestinal-tract
#3
Kosuke Nomura, Toshiro Iizuka, Daisuke Kaji, Hisashi Yamamoto, Yasutaka Kuribayashi, Masami Tanaka, Tsukasa Furuhata, Satoshi Yamashita, Daisuke Kikuchi, Akira Matsui, Toshifumi Mitani, Yasunori Ota, Shuichi Taniguchi, Shu Hoteya
Background and Aims: We retrospectively investigated the incidence of acute graft-versus-host disease (GVHD) in the lower gastrointestinal (GI) tract and the diagnostic accuracy of endoscopy. Methods: Of 1231 patients who underwent allogeneic hematopoietic stem cell transplantation between January 2005 and December 2014, 186 of whom underwent colonoscopy and biopsy and had no cytomegalovirus infection. The endoscopic findings and histologic diagnosis from these 186 patients were retrospectively analyzed...
2017: Gastroenterology Research and Practice
https://www.readbyqxmd.com/read/29228187/extracellular-nucleic-acids-of-the-marine-bacterium-rhodovulum-sulfidophilum-and-recombinant-rna-production-technology-using-bacteria
#4
Yo Kikuchi, So Umekage
Extracellular nucleic acids of high molecular weight are detected ubiquitously in seawater. Recent studies have indicated that these nucleic acids are, at least in part, derived from active production by some bacteria. The marine bacterium Rhodovulum sulfidophilum is one of those bacteria. Rdv. sulfidophilum is a non-sulfur phototrophic marine bacterium, which is known to form flocs, structured communities of cells, and to produce extracellular nucleic acids in culture media. Recently, it has been revealed that this bacterium produces gene transfer agent-like particles and that this particle production may be related to the extracellular nucleic acid production mechanism...
December 6, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/29226059/reversible-broad-spectrum-control-of-selective-reflections-of-chiral-nematic-phases-by-closed-open-type-axially-chiral-azo-dopants
#5
Hiroya Nishikawa, Daigou Mochizuki, Hiroki Higuchi, Yasushi Okumura, Hirotsugu Kikuchi
We demonstrate reversible RGB-color photocontrol of a chiral nematic liquid crystal (N*LC) by using newly synthesized closed- and open-type chiral dopants. The photoswitching elements in the dopants are azobenzene units on axially chiral binaphthyl cores. Owing to cis-trans photoisomerization of the azobenzene units, both closed- and open-type compounds showed higher solubility, larger helical twisting power (HTP), and larger changes in HTP than conventional chiral dopants in host LCs. Thus, even at very low dopant concentrations, we successfully controlled the chirality of the induced helical structure of the N*LCs...
December 2017: ChemistryOpen
https://www.readbyqxmd.com/read/29226054/reversible-broad-spectrum-control-of-selective-reflections-of-chiral-nematic-phases-by-closed-open-type-axially-chiral-azo-dopants
#6
Hiroya Nishikawa, Daigou Mochizuki, Hiroki Higuchi, Yasushi Okumura, Hirotsugu Kikuchi
Invited for this month's cover picture is the groups of Professor Hirotsugu Kikuchi and Dr. Yasushi Okumura at the Institute for Materials Chemistry and Engineering at Kyushu University (Japan). External dynamic control of molecular self-organized superstructures with unique features has been researched, as these structures are applicable to chiral molecular devices. The cover picture shows photocontrol of selective reflection color that originated from the self-organized helical structure of chiral nematic liquid crystals (N*LCs) using closed-/open-type dopants...
December 2017: ChemistryOpen
https://www.readbyqxmd.com/read/29225367/the-impact-of-organic-additives-on-copper-trench-microstructure
#7
James B Marro, Chukwudi A Okoro, Yaw S Obeng, Kathleen C Richardson
Organic additives are typically used in the pulse electrodeposition of copper (Cu) to prevent void formation during the filling of high aspect ratio features. In this work, the role of bath chemistry as modified by organic additives was investigated for its effects on Cu trench microstructure. Polyethylene glycol (PEG), bis(3-sulfopropyl) disulfide (SPS), and Janus green b (JGB) concentrations were varied in the Cu electrodeposition bath. Results indicated a correlation between the JGB/SPS ratio and the surface roughness and residual stresses in the Cu...
2017: Journal of the Electrochemical Society
https://www.readbyqxmd.com/read/29220607/case-of-cone-dystrophy-with-normal-fundus-appearance-associated-with-biallelic-poc1b-variants
#8
Azusa Kominami, Shinji Ueno, Taro Kominami, Ayami Nakanishi, Yasuki Ito, Kaoru Fujinami, Kazushige Tsunoda, Takaaki Hayashi, Sachiko Kikuchi, Shuhei Kameya, Takeshi Iwata, Hiroko Terasaki
BACKGROUND: Biallelic variants of POC1B were recently reported to cause autosomal recessive non-syndromic cone dystrophy. However, the number of studies supporting this is limited, and the clinical phenotypes of cone dystrophy have not been definitively determined. The purpose of this study was to report the phenotype of a case of POC1B-associated cone dystrophy. MATERIALS AND METHODS: The medical chart of one case diagnosed with cone dystrophy was reviewed. RESULTS: The patient was a 20-year-old Japanese man whose chief complaint was a progressive decrease in his central vision...
December 8, 2017: Ophthalmic Genetics
https://www.readbyqxmd.com/read/29220371/the-impact-of-different-anti-vascular-endothelial-growth-factor-treatment-regimens-on-reducing-burden-for-caregivers-and-patients-with-wet-age-related-macular-degeneration-in-a-single-center-real-world-japanese-setting
#9
Tsukasa Hanemoto, Yusuke Hikichi, Norimasa Kikuchi, Tadahiko Kozawa
OBJECTIVE: To describe the burden associated with different anti-vascular endothelial growth factor (VEGF) treatment strategies for wet age-related macular degeneration (wAMD) in a real-word setting in Japan. METHODS: Single-center, cross-sectional survey of caregivers of patients with wAMD performed in a hospital in Mito-City, a rural area in Japan. Caregiver burden was evaluated using the Burden Index of Caregivers (BIC-11), and depressive symptoms were assessed by the Center for Epidemiologic Studies Depression scale...
2017: PloS One
https://www.readbyqxmd.com/read/29218007/alteration-of-venous-drainage-route-in-idiopathic-normal-pressure-hydrocephalus-and-normal-aging
#10
Takeshi Satow, Toshihiko Aso, Sei Nishida, Taro Komuro, Tsukasa Ueno, Naoya Oishi, Yukako Nakagami, Masashi Odagiri, Takayuki Kikuchi, Kazumichi Yoshida, Keita Ueda, Takeharu Kunieda, Toshiya Murai, Susumu Miyamoto, Hidenao Fukuyama
Idiopathic normal pressure hydrocephalus (iNPH) is a highly prevalent condition in the elderly population; however, the underlying pathophysiology in relation to the aging process remains unclear. To investigate the effect of removal of cerebrospinal fluid by lumbar "tap test" on the cerebral circulation in patients with iNPH, 14 patients with "probable" iNPH were studied using a novel blood tracking technique based on blood oxygenation level-dependent (BOLD) magnetic resonance signal intensity. By tracking the propagation of the low-frequency component of the BOLD signal, extended venous drainage times were observed in the periventricular region of the patients, which was reversed by tap test...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/29215027/altered-human-voice-processing-in-the-frontal-cortex-and-a-developmental-language-delay-in-3-to-5-year-old-children-with-autism-spectrum-disorder
#11
Yuko Yoshimura, Mitsuru Kikuchi, Norio Hayashi, Hirotoshi Hiraishi, Chiaki Hasegawa, Tetsuya Takahashi, Manabu Oi, Gerard B Remijn, Takashi Ikeda, Daisuke N Saito, Hirokazu Kumazaki, Yoshio Minabe
The inferior frontal and superior temporal areas in the left hemisphere are crucial for human language processing. In the present study, we investigated the magnetic mismatch field (MMF) evoked by voice stimuli in 3- to 5-year-old typically developing (TD) children and children with autism spectrum disorder (ASD) using child-customized magnetoencephalography (MEG). The children with ASD exhibited significantly decreased activation in the left superior temporal gyrus compared with the TD children for the MMF amplitude...
December 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29213014/a-case-of-a-giant-mass-in-the-lumbar-region-of-a-newborn-calf
#12
Kazuki Yoshioka, Aika Ishikawa, Makoto Sugiyama, Jun Nagasao, Motohiro Kikuchi
The present report describes a newborn calf with spina bifida that presented with a giant mass of the lumbar region, as well as subsequent gross, histological, and immunohistochemical examinations. A malformed Japanese black calf (estimated weight = 20 kg) was euthanized immediately after birth. A gross evaluation revealed a giant mass (approximately 60 cm × 30 cm × 15 cm) covered by the hair coat in the lumbar region and connected with the hair coat of the trunk. The mass surface was divided by a deep polygonal groove and externally resembled a lobulated kidney...
2017: Okajimas Folia Anatomica Japonica
https://www.readbyqxmd.com/read/29213010/continuous-improvement-of-fitness-for-duty-management-programs-for-workers-engaging-in-stabilizing-and-decommissioning-work-at-the-fukushima-daiichi-nuclear-power-plant
#13
Koji Mori, Seiichiro Tateishi, Tatsuhiko Kubo, Yuichi Kobayashi, Ko Hiraoka, Futoshi Kawashita, Takeshi Hayashi, Yoshifumi Kiyomoto, Masaki Kobashi, Kota Fukai, Hiroyuki Tahara, Ryuji Okazaki, Akira Ogami, Kazuyuki Igari, Katsunori Suzuki, Hiroshi Kikuchi, Kazuhiro Sakai
BACKGROUND: Numerous workers have participated in recovery efforts following the accident that occurred at the Tokyo Electric Power Company (TEPCO) Fukushima Daiichi Nuclear Power Plant after the Great East Japan Earthquake. These workers, belonging to various companies, have been engaged in various tasks since the accident. Given the hazards and stress involved in these tasks and the relatively long time required to transport sick or injured workers to medical institutions, it became necessary to quickly implement a more stringent management program for fitness for duty than in ordinary work environments...
December 6, 2017: Journal of Occupational Health
https://www.readbyqxmd.com/read/29211010/meta-analysis-of-fecal-microbiota-and-metabolites-in-experimental-colitic-mice-during-the-inflammatory-and-healing-phases
#14
Toshifumi Osaka, Eri Moriyama, Shunichi Arai, Yasuhiro Date, Junji Yagi, Jun Kikuchi, Satoshi Tsuneda
The imbalance of gut microbiota is known to be associated with inflammatory bowel disease, but it remains unknown whether dysbiosis is a cause or consequence of chronic gut inflammation. In order to investigate the effects of gut inflammation on microbiota and metabolome, the sequential changes in gut microbiota and metabolites from the onset of colitis to the recovery in dextran sulfate sodium-induced colitic mice were characterized by using meta 16S rRNA sequencing and proton nuclear magnetic resonance (¹H-NMR) analysis...
December 6, 2017: Nutrients
https://www.readbyqxmd.com/read/29208927/establishment-of-a-strain-of-haemophilia-a-pigs-by-xenografting-of-foetal-testicular-tissue-from-neonatally-moribund-cloned-pigs
#15
Hiroyuki Kaneko, Kazuhiro Kikuchi, Michiko Nakai, Daiichiro Fuchimoto, Shunichi Suzuki, Shoichiro Sembon, Junko Noguchi, Akira Onishi
Grafting of testicular tissue into immunodeficient mice makes it possible to obtain functional sperm from immature donor animals that cannot be used for reproduction. We have developed a porcine model of human haemophilia A (haemophilia-A pigs) by nuclear transfer cloning from foetal fibroblasts after disruption of the X-linked coagulation factor VIII (F8) gene. Despite having a recessive condition, female F8+/- cloned pigs died of severe bleeding at an early age, as was the case for male F8-/Y cloned pigs, thus making it impossible to obtain progeny...
December 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29208635/the-sox2-promoter-driven-cd63-gfp-transgenic-rat-model-allows-tracking-neural-stem-cell-derived-extracellular-vesicles
#16
Aya Yoshimura, Naoki Adachi, Hitomi Matsuno, Masaki Kawamata, Yusuke Yoshioka, Hisae Kikuchi, Haruki Odaka, Tadahiro Numakawa, Hiroshi Kunugi, Takahiro Ochiya, Yoshitaka Tamai
Extracellular vesicles (EVs) can modulate microenvironments by transferring biomolecules including RNAs and proteins derived from releasing cells to target cells. To understand the molecular mechanisms maintaining the neural stem cell (NSC) niche through EVs, a new transgenic (Tg) rat strain that can release human CD63-GFP expressed EVs from the NSCs was established. Human CD63-GFP expression was controlled under the rat Sox2 promoter (Sox2/human CD63-GFP), and it was expressed in undifferentiated foetal brains...
November 30, 2017: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/29203079/residual-pressure-gradient-across-the-implanted-stent-an-important-factor-of-post-pci-physiological-results
#17
Yoshiaki Kawase, Masanori Kawasaki, Jun Kikuchi, Tetsuo Hirata, Syuuichi Okamoto, Toru Tanigaki, Hiroyuki Omori, Hideaki Ota, Munenori Okubo, Hiroki Kamiya, Akihiro Hirakawa, Hitoshi Matsuo
BACKGROUND: Instantaneous wave-free ratio (iFR) has the potential to improve the accuracy of the prediction of the physiological result of percutaneous coronary intervention (PCI). The aim of this study was to evaluate the accuracy of iFR to predict the final physiological results following PCI, and investigate the factors for failed prediction. METHODS: In 73 lesions, iFR pullback recordings were measured and comparisons were made between the predicted improvement following PCI and the observed result...
December 1, 2017: Journal of Cardiology
https://www.readbyqxmd.com/read/29202390/abnormal-functional-connectivity-of-high-frequency-rhythms-in-drug-na%C3%A3-ve-schizophrenia
#18
Tetsuya Takahashi, Takashi Goto, Sou Nobukawa, Yuji Tanaka, Mitsuru Kikuchi, Masato Higashima, Yuji Wada
OBJECTIVE: The "dysconnection hypothesis" has been proposed as a core neural basis for schizophrenia. Although growing neuroimaging-based evidence suggests atypical functional connectivity in patients with schizophrenia, the results are inconsistent and the effects of antipsychotic treatment remain elusive. METHODS: We performed resting-state electroencephalography (EEG) in 21 drug-naïve patients with schizophrenia (14 patients were re-evaluated after administration of antipsychotic treatment) and 31 age-matched healthy control subjects...
November 21, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29199817/microporous-co-c-nanoparticles-prepared-by-dealloying-coal-c-precursors-achieving-strong-wideband-microwave-absorption-via-controlling-carbon-shell-thickness
#19
Da Li, Haoyan Liao, Hiroaki Kikuchi, Tong Liu
The excellent magnetic features make Co-based materials a promising candidate as high-performance microwave absorbers. However, it is still a significant challenge for Co-based absorbers to possess high-intensity and broadband absorption simultaneously owing to the lack of dielectric loss and impedance matching. Herein, microporous Co@C nanoparticles (NPs) with carbon shell thickness of 1.8-4.9 nm have been successfully synthesized by dealloying CoAl@C precursors. All the samples exhibit high microwave absorption performance...
December 4, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29199750/high-pressure-glass-formation-of-a-series-of-1-alkyl-3-methylimidazolium-bis-trifluoromethanesulfonyl-imide-homologues
#20
Yukihiro Yoshimura, Takahiro Takekiyo, Yoshihiro Koyama, Mayumi Takaku, Misaho Yamamura, Natsumi Kikuchi, Daisuke Wakabayashi, Nobumasa Funamori, Kiyoto Matsuishi, Hiroshi Abe, Nozomu Hamaya
We investigated the stability of the liquid phase of a series of 1-alkyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide ([Cnmim][TFSI]) homologues with different alkyl chain lengths for 3 ≤ n ≤ 10 at room temperature. We found that all [Cnmim][TFSI] samples (n = 3-10) formed a glassy state when pressure was applied. Intriguingly, the glass transition pressure (pg) slightly increases up to n = 5, reaches a plateau at n ≧ 8, and increases again at n = 10. This is completely different from the high-pressure glass formation of [Cnmim][BF4], where the pg decreases as n increases...
December 4, 2017: Physical Chemistry Chemical Physics: PCCP
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