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https://www.readbyqxmd.com/read/29459692/isolation-of-uracil-auxotroph-mutants-of-coral-symbiont-alga-for-symbiosis-studies
#1
Yuu Ishii, Shinichiro Maruyama, Konomi Fujimura-Kamada, Natsumaro Kutsuna, Shunichi Takahashi, Masakado Kawata, Jun Minagawa
Coral reef ecosystems rely on stable symbiotic relationship between the dinoflagellate Symbiodinium spp. and host cnidarian animals. The collapse of such symbiosis could cause coral 'bleaching' and subsequent host death. Despite huge interest on Symbiodinium, lack of mutant strains and readily available genetic tools have hampered molecular research. A major issue was the tolerance to marker antibiotics. Here, we isolated Symbiodinium mutants requiring uracil for growth, and hence, useful in transformation screening...
February 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29459145/discovery-of-1-2-3-4-tetrahydropyrimido-1-2-a-benzimidazoles-as-novel-class-of-corticotropin-releasing-factor-1-receptor-antagonists
#2
Takuto Kojima, Michiyo Mochizuki, Takafumi Takai, Yasutaka Hoashi, Sachie Morimoto, Masaki Seto, Minoru Nakamura, Katsumi Kobayashi, Yuu Sako, Maiko Tanaka, Naoyuki Kanzaki, Yohei Kosugi, Takahiko Yano, Kazuyoshi Aso
A new class of corticotropin releasing factor 1 (CRF1 ) receptor antagonists characterized by a tricyclic core ring was designed and synthesized. Novel tricyclic derivatives 2a-e were designed as CRF1 receptor antagonists based on conformation analysis of our original 2-anilinobenzimidazole CRF1 receptor antagonist. The synthesized tricyclic derivatives 2a-e showed CRF1 receptor binding activity with IC50 values of less than 400 nM, and the 1,2,3,4-tetrahydropyrimido-[1,2-a]benzimidazole derivative 2e was selected as a lead compound with potent in vitro CRF1 receptor binding activity (IC50 = 7...
February 8, 2018: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/29449379/draft-genome-sequence-of-the-nitrogen-fixing-and-hormogonia-inducing-cyanobacterium-nostoc-cycadae-strain-wk-1-isolated-from-the-coralloid-roots-of-cycas-revoluta
#3
Yu Kanesaki, Masaki Hirose, Yuu Hirose, Takatomo Fujisawa, Yasukazu Nakamura, Satoru Watanabe, Shigeru Matsunaga, Hiroko Uchida, Akio Murakami
We report here the whole-genome sequence of Nostoc cycadae strain WK-1, which was isolated from cyanobacterial colonies growing in the coralloid roots of the gymnosperm Cycas revoluta It can provide valuable resources to study the mutualistic relationships and the syntrophic metabolisms between the cyanobacterial symbiont and the host plant, C. revoluta .
February 15, 2018: Genome Announcements
https://www.readbyqxmd.com/read/29427085/regulatory-effects-of-neuroinflammatory-responses-through-brain-derived-neurotrophic-factor-signaling-in-microglial-cells
#4
Sheng-Wei Lai, Jia-Hong Chen, Hsiao-Yun Lin, Yu-Shu Liu, Cheng-Fang Tsai, Pei-Chun Chang, Dah-Yuu Lu, Chingju Lin
Inhibition of microglial over-activation is an important strategy to counter balance neurodegenerative progression. We previously demonstrated that the adenosine monophosphate-activated protein kinase (AMPK) may be a therapeutic target in mediating anti-neuroinflammatory responses in microglia. Brain-derived neurotrophic factor (BDNF) is one of the major neurotrophic factors produced by astrocytes to maintain the development and survival of neurons in the brain, and have recently been shown to modulate homeostasis of neuroinflammation...
February 9, 2018: Molecular Neurobiology
https://www.readbyqxmd.com/read/29424280/the-peel-of-citrus-kawachiensis-kawachi-bankan-ameliorates-microglial-activation-tau-hyper-phosphorylation-and-suppression-of-neurogenesis-in-the-hippocampus-of-senescence-accelerated-mice
#5
Satoshi Okuyama, Yoshimi Kotani, Kana Yamamoto, Atsushi Sawamoto, Kuniaki Sugawara, Masahiko Sudo, Yuu Ohkubo, Arisa Tamanaha, Mitsunari Nakajima, Yoshiko Furukawa
We previously reported that the dried peel powder of Citrus kawachiensis, one of the citrus products of Ehime, Japan, exerted anti-inflammatory effects in the brain of a lipopolysaccharide-injected systemic inflammation animal model. Inflammation is one of the main mechanisms underlying aging in the brain; therefore, we herein evaluated the anti-inflammatory and other effects of the dried peel powder of C. kawachiensis in the senescence-accelerated mouse-prone 8 (SAMP8) model. The C. kawachiensis treatment inhibited microglial activation in the hippocampus, the hyper-phosphorylation of tau at 231 of threonine in hippocampal neurons, and ameliorated the suppression of neurogenesis in the dentate gyrus of the hippocampus...
February 9, 2018: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/29394662/-esophagogastric-junction-cancer-resection-with-bilateral-adrenal-metastasis-a-case-report
#6
Sho Toyoda, Atsuo Imagawa, Kouichi Demura, Kurumi Tsuchihashi, Satoshi Okumura, Hiroshi Yasuda, Kansuke Yamamoto, Aya Ito, Naoto Mizumura, Ken Yuu, Hiroshi Tsuchihashi, Masao Ogawa, Masayasu Kawasaki, Masao Kameyama
The patient was a 64-year-old man with esophagogastric junction cancer. We performed right thoracotomy-laparotomy for lower esophageal and cardiac gastric resection, D2 lymphadenectomy, and reconstruction of a gastric tube in October 2011. Histopathology confirmed T4aN1M1(LYM), Stage IV cancer(Japanese Classification of Gastric Carcinoma, 14th edition) with R0 resection. Because of preexisting alcoholic cirrhosis, postoperative chemotherapy was not an option. In March 2014, we performed left adrenalectomy for left adrenal metastasis, and in December 2014, we performed right adrenalectomy for metastasis to the right adrenal gland...
November 2017: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/29394627/-a-case-of-rectal-cancer-presenting-with-schistosomiasis-japonica-eggs
#7
Satoshi Okumura, Atsuo Imagawa, Hiroshi Kawashima, Sho Toyoda, Hiroshi Yasuda, Kansuke Yamamoto, Aya Ito, Naoto Mizumura, Ken Yuu, Hiromitsu Maehira, Masao Ogawa, Masayasu Kawasaki, Masao Kameyama
A 87-year-old man had used to live in Shizuoka Prefecture. He got colonoscopy due to melena, and a type 1 tumor about 3 cm was detected in the rectum. He was diagnosed with rectal cancer. We performed a laparoscopic low anterior resection with lymphadenectomy. Histopathological findings shows tub1, pSM(7mm), med, INF a, ly1, v0, pPM0, pDM0, pN0(0/7), T1bN0M0, Stage I . Schistosoma japonica eggs were seen in submucosal of the rectum not around the tumor but also normal tissue. The eggs embolized microvessels...
November 2017: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/29387517/effect-of-lactobacillus-casei-strain-shirota-fermented-milk-on-metabolic-abnormalities-in-obese-prediabetic-japanese-men-a-randomised-double-blind-placebo-controlled-trial
#8
Eiichiro Naito, Yasuto Yoshida, Satoru Kunihiro, Kumiko Makino, Kohei Kasahara, Yuu Kounoshi, Masanori Aida, Ryotaro Hoshi, Osamu Watanabe, Tomoki Igarashi, Kouji Miyazaki, Hideki Ito
An obesity-related prediabetic state is characterised by metabolic abnormalities such as post-glucose load hyperglycaemia and dyslipidaemia and consequently increases the risk for type 2 diabetes and cardiovascular disease. This study aimed to investigate the effects of Lactobacillus casei strain Shirota (LcS) on metabolic abnormalities in obese prediabetic subjects in a randomised, double-blind, placebo-controlled trial. Herein, 100 obese subjects (body mass index ≥25), who had moderate post-load hyperglycaemia (1-hr post-load plasma glucose (PG) levels ≥180 mg/dl during the oral glucose tolerance test), consumed LcS-fermented milk or placebo milk daily for 8 weeks...
2018: Bioscience of Microbiota, Food and Health
https://www.readbyqxmd.com/read/29318565/a-case-of-severe-stenosis-of-hepatic-veins-and-inferior-vena-cava-with-stomal-variceal-bleeding-induced-by-oxaliplatin-based-chemotherapy
#9
Hayato Yamaguchi, Yoshihiro Furuichi, Yoshitaka Kasai, Hirohito Takeuchi, Yuu Yoshimasu, Katsutoshi Sugimoto, Ikuo Nakamura, Takao Itoi
A 27-year-old woman with colon cancer and liver metastasis was referred to our hospital. Colectomy and colostomy were performed to improve her ileus. Following 13 sessions of oxaliplatin-based chemotherapy (OC) with mFOLFOX6 + bevacizumab, thrombocytopenia and frequent peristomal bleeding occurred. Computed tomography showed severe ascites, splenomegaly, significant collateral veins around the stoma, and severe stenosis of the hepatic veins (HV) and inferior vena cava (IVC). Ultrasound elastography showed high liver (and spleen) stiffness values...
January 9, 2018: Clinical Journal of Gastroenterology
https://www.readbyqxmd.com/read/29301329/differential-characterization-of-temozolomide-resistant-human-glioma-cells
#10
Sheng-Wei Lai, Bor-Ren Huang, Yu-Shu Liu, Hsiao-Yun Lin, Chun-Chuan Chen, Cheng-Fang Tsai, Dah-Yuu Lu, Chingju Lin
Glioblastoma multiforme (GBM) is the most common type of primary and malignant tumor occurring in the adult central nervous system. Temozolomide (TMZ) has been considered to be one of the most effective chemotherapeutic agents to prolong the survival of patients with glioblastoma. Many glioma cells develop drug-resistance against TMZ that is mediated by increasing O-6-methylguanine-DNA methyltransferase (MGMT) levels. The expression of connexin 43 was increased in the resistant U251 subline compared with the parental U251 cells...
January 2, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29283918/clinical-utility-of-intraoperative-motor-evoked-potential-monitoring-to-prevent-postoperative-spinal-cord-injury-in-thoracic-and-thoracoabdominal-aneurysm-repair-an-audit-of-the-japanese-association-of-spinal-cord-protection-in-aortic-surgery-database
#11
Kenji Yoshitani, Kenichi Masui, Masahiko Kawaguchi, Mikito Kawamata, Manabu Kakinohana, Shinya Kato, Kyoko Hasuwa, Michiaki Yamakage, Yusuke Yoshikawa, Kimitoshi Nishiwaki, Tadashi Aoyama, Yoshimi Inagaki, Kazumasa Yamasaki, Mishiya Matsumoto, Kazuyoshi Ishida, Atsuo Yamashita, Katsuhiro Seo, Shinichi Kakumoto, Hironobu Hayashi, Yuu Tanaka, Satoshi Tanaka, Takashi Ishida, Hiroyuki Uchino, Takayasu Kakinuma, Yoshitsugu Yamada, Yoshiteru Mori, Shunsuke Izumi, Kunihiro Nishimura, Michikazu Nakai, Yoshihiko Ohnishi
BACKGROUND: Spinal cord ischemic injury is the most devastating sequela of descending and thoracoabdominal aortic surgery. Motor-evoked potentials (MEPs) have been used to intraoperatively assess motor tract function, but it remains unclear whether MEP monitoring can decrease the incidence of postoperative motor deficits. Therefore, we reviewed multicenter medical records of patients who had undergone descending and thoracoabdominal aortic repair (both open surgery and endovascular repair) to assess the association of MEP monitoring with postoperative motor deficits...
March 2018: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29278294/chemotherapy-immunophenoprofiles-in-non-small-cell-lung-cancer-by-personalized-membrane-proteomics
#12
Denise Utami Putri, Po-Hao Feng, Yuu-Hueih Hsu, Kang-Yun Lee, Feng-Wen Jiang, Lu-Wei Kuo, Yu-Ju Chen, Chia-Li Han
OBJECTIVES: No study has addressed how the immune status at the molecular level is affected by first-line pemetrexed and cisplatin (PEM-CIS) combination therapy in patients with non-small-cell lung cancer (NSCLC). Thus, we aimed to identify the immune status from membrane proteome alterations in patients with NSCLC upon PEM-CIS treatment. METHODS: The paired peripheral blood mononuclear cells (PBMCs) were collected from four patients with lung adenocarcinoma before and after the first regimen of PEM-CIS treatment and applied quantitative membrane proteomics analysis...
December 26, 2017: Proteomics. Clinical Applications
https://www.readbyqxmd.com/read/29274333/the-natural-flavonoid-myricetin-inhibits-gastric-h-k-atpase
#13
Yuu Miyazaki, Atsuhiko Ichimura, Shun Sato, Takuto Fujii, Shinya Oishi, Hideki Sakai, Hiroshi Takeshima
Myricetin (3,3',4',5,5',7-hexahydroxyflavone), a major flavonoid in berries and red wine, has been recently used as a health food supplement based on its antioxidant and antitumor properties. We report here that myricetin preferentially exerts inhibitory effects on gastric H+, K+-ATPase. Myricetin inhibited H+, K+-ATPase with a sub-micromolar IC50 value in an enzyme assay using freeze-dried tubulovesicles prepared from hog stomach. Na+, K+-ATPase and Ca2+-ATPase were also inhibited by myricetin in a dose-dependent manner, but the IC50 values for these enzymes were approximately an order of magnitude higher compared to the H+, K+-ATPase...
December 20, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29185030/first-detection-and-molecular-identification-of-entamoeba-bovis-from-japanese-cattle
#14
Makoto Matsubayashi, Yuu Matsuura, Satoko Nukata, Yuusuke Daizi, Tomoyuki Shibahara, Isao Teramoto, Tomohide Matsuo, Shigehiko Uni, Takeshi Hatta, Akira Kaneko, Naotoshi Tsuji, Kazumi Sasai
Thus far, Entamoeba species have been classified based on morphology such as the number of nuclei in mature cysts and their hosts. Using recently developed molecular tools, ruminant Entamoeba spp. are currently classified into four species/genotypes: E. bovis and Entamoeba ribosomal lineages (RL) 1, 2, and 4. However, the distribution or pathogenicity of ruminant Entamoeba has not been well documented. In the present study, we examined a total of 25 fecal and seven environmental samples collected from six farms in Japan from 2016 to 2017 by the floatation method and PCR and sequencing analyses...
November 28, 2017: Parasitology Research
https://www.readbyqxmd.com/read/29180066/inhibition-of-estrogen-receptor-reduces-connexin-43-expression-in-breast-cancers
#15
Cheng-Fang Tsai, Yu-Kai Cheng, Dah-Yuu Lu, Shu-Lin Wang, Chen-Ni Chang, Pei-Chun Chang, Wei-Lan Yeh
Connexins are widely supported as tumor suppressors due to their downregulation in cancers, nevertheless, more recent evidence suggests roles for connexins in facilitating tumor progression in later stages, including metastasis. One of the key factors regulating the expression, modification, stability, and localization of connexins is hormone receptors in hormone-dependent cancers. It is reasonable to consider that hormones/hormone receptors may modulate connexins expression and play critical roles in the cellular control of connexins during breast cancer progression...
November 24, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29136031/quantification-of-the-sit-to-stand-movement-for-monitoring-age-related-motor-deterioration-using-the-nintendo-wii-balance-board
#16
Go Yamako, Etsuo Chosa, Koji Totoribe, Yuu Fukao, Gang Deng
Simple methods for quantitative evaluations of individual motor performance are crucial for the early detection of motor deterioration. Sit-to-stand movement from a chair is a mechanically demanding component of activities of daily living. Here, we developed a novel method using the ground reaction force and center of pressure measured from the Nintendo Wii Balance Board to quantify sit-to-stand movement (sit-to-stand score) and investigated the age-related change in the sit-to-stand score as a method to evaluate reduction in motor performance...
2017: PloS One
https://www.readbyqxmd.com/read/29098659/prognostic-prediction-of-oral-squamous-cell-carcinoma-by-e-cadherin-and-n-cadherin-expression-in-overall-cells-in-tumor-nests-or-tumor-cells-at-the-invasive-front
#17
Yuu Ozaki-Honda, Sachiko Seki, Mutsunori Fujiwara, Masaaki Matsuura, Shuichi Fujita, Hisazumi Ikeda, Masahiro Umeda, Takao Ayuse, Tohru Ikeda
Epithelial-mesenchymal transition (EMT) is a significant process in the invasion and metastasis of cancers including oral squamous cell carcinoma (OSCC), and the cadherin switch has been identified as one of the hallmarks of EMT. The aim of the present study was to evaluate the significance of the cadherin switch in the prognosis of OSCC and generate a model for prognostic predictions. Seventy-six biopsy and/or initial surgical specimens from OSCC patients were immunohistochemically analyzed for the expression of E-cadherin and N-cadherin in either overall OSCC cells in tumor nests or in OSCC cells at the invasive front...
November 2, 2017: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/29044955/single-molecule-observation-of-the-photoregulated-conformational-dynamics-of-dna-origami-nanoscissors
#18
Elena M Willner, Yuu Kamada, Yuki Suzuki, Tomoko Emura, Kumi Hidaka, Hendrik Dietz, Hiroshi Sugiyama, Masayuki Endo
We demonstrate direct observation of the dynamic opening and closing behavior of photocontrollable DNA origami nanoscissors using high-speed atomic force microscopy (HS-AFM). First the conformational change between the open and closed state controlled by adjustment of surrounding salt concentration could be directly observed during AFM scanning. Then light-responsive moieties were incorporated into the nanoscissors to control these structural changes by photoirradiation. Using photoswitchable DNA strands, we created a photoresponsive nanoscissors variant and were able to distinguish between the open and closed conformations after respective irradiation with ultraviolet (UV) and visible (Vis) light by gel electrophoresis and AFM imaging...
October 17, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/29025977/an-approach-to-discovering-novel-muscarinic-m1-receptor-positive-allosteric-modulators-with-potent-cognitive-improvement-and-minimized-gastrointestinal-dysfunction
#19
Emi Kurimoto, Satoru Matsuda, Yuji Shimizu, Yuu Sako, Takao Mandai, Takahiro Sugimoto, Hiroki Sakamoto, Haruhide Kimura
Activation of muscarinic M1 receptor (M1R) is a promising approach for improving cognitive impairment in Alzheimer's disease. However, an M1 selective positive allosteric modulator (PAM), benzyl quinolone carboxylic acid (BQCA), at 30 mg/kg, induced diarrhea in wild-type mice, but not in M1R knock-out mice. Moreover, BQCA (0.1-1000 nM) augmented electric field stimulation (EFS) -induced ileum contraction in an in vitro Magnus assay. Thus, we decided to establish a drug-screening strategy to discover novel M1 PAMs producing potent cognitive improvement with minimized gastrointestinal (GI) dysfunction...
October 12, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/29018650/surgical-treatment-of-rotational-vertebral-artery-syndrome-induced-by-spinal-tumor-a-case-report-and-literature-review
#20
Shoichi Haimoto, Yusuke Nishimura, Masahito Hara, Yuu Yamamoto, Toshiki Fukuoka, Ryuichi Fukuyama, Toshihiko Wakabayashi, Howard J Ginsberg
Vertebrobasilar insufficiency (VBI) provoked by physiological head rotation is known as rotational vertebral artery syndrome (RVAS) or Bow Hunter syndrome. RVAS most often occurs at C1-2 level with head rotation and presents with symptoms of VBI. Several previously published studies have reported RVAS at subaxial sites (V2 segment), however, tumor-induced RVAS has never been reported. The authors report the first case of RVAS at V2 segment due to compression from a spinal tumor. A 71-year-old man presented with symptoms of dizziness provoked by head rotation or neck extension...
October 2017: NMC Case Report Journal
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