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https://www.readbyqxmd.com/read/28334525/indium-catalyzed-regioselective-%C3%AE-alkylation-of-pyrroles-with-carbonyl-compounds-and-hydrosilanes-and-its-application-to-constructing-a-quaternary-carbon-center-with-a-%C3%AE-pyrrolyl-group
#1
Shota Nomiyama, Takahiro Ogura, Hiroaki Ishida, Kazuki Aoki, Teruhisa Tsuchimoto
Treatment of N-substituted pyrroles with carbonyl compounds and nucleophiles under indium catalysis was found to be a promising method for preparing β-alkylpyrroles without contamination by α-alkylpyrroles. With this methodology, a variety of alkyl groups, which are primary, secondary and tertiary as well as cyclic and functionalized types, can be introduced in place onto the pyrrole ring. The simplicity performable as a catalytic one-step process is one of the important feature of this reaction. The substituent on the nitrogen atom of the product β-alkylpyrrole can be removed easily by literature procedures...
March 23, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28326342/short-term-intermittent-administration-of-parathyroid-hormone-facilitates-osteogenesis-by-different-mechanisms-in-cancellous-and-cortical-bone
#2
Kenji Ogura, Tadahiro Iimura, Yuji Makino, Ayano Sugie-Oya, Aya Takakura, Ryoko Takao-Kawabata, Toshinori Ishizuya, Keiji Moriyama, Akira Yamaguchi
Intermittent administration of human parathyroid hormone (1-34)[hPTH(1-34)] induces anabolic action on the bones. To understand the mechanism underlying the early phase of hPTH(1-34)-induced anabolic action, we investigated the expression profiles of osterix and sclerostin after short-term intermittent administration of hPTH(1-34) using immunohistochemistry in adult rats. In the cancellous bone, hPTH(1-34) administration greatly increased the number of osterix-positive cells in the bone marrow on day 1, but the cells gradually decreased on days 3 and 5...
December 2016: Bone Reports
https://www.readbyqxmd.com/read/28321429/intermediate-to-long-term-results-of-combined-anterior-cruciate-ligament-reconstruction-and-autologous-chondrocyte-implantation
#3
Andrew N Pike, Tim Bryant, Takahiro Ogura, Tom Minas
BACKGROUND: Cartilage injury associated with anterior cruciate ligament (ACL) ruptures is common; however, relatively few reports exist on concurrent cartilage repair with ACL reconstruction. Autologous chondrocyte implantation (ACI) has been utilized successfully for treatment of moderate to large chondral defects. HYPOTHESIS: ACL insufficiency with relatively large chondral defects may be effectively managed with concurrent ACL reconstruction and ACI. STUDY DESIGN: Case series; Level of evidence, 4...
February 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28318878/insulin-stimulates-transport-of-organic-anion-compounds-mediated-by-organic-anion-transporting-polypeptide-2b1-in-the-human-intestinal-cell-line-caco-2
#4
Taku Kobayashi, Takahiro Koizumi, Masaki Kobayashi, Jiro Ogura, Yuichi Horiuchi, Yuki Kimura, Ayuko Kondo, Ayako Furugen, Katsuya Narumi, Natsuko Takahashi, Ken Iseki
Organic anion transporting polypeptide 2B1 (OATP2B1) is the major uptake transporter in the intestine, and transports various clinically used therapeutic agents. Insulin acts through the insulin receptor in targeted cells, and Rab8A is one of the insulin signaling pathways. The small intestine in humans also expresses insulin receptor and Rab8A. It has been reported that insulin stimulates peptide transporter 1 (PEPT1) expression at the apical membrane and increases uptake of PEPT1 substrates in small intestine epithelial model cells (Caco-2 cells)...
December 27, 2016: Drug Metabolism and Pharmacokinetics
https://www.readbyqxmd.com/read/28317858/near-infrared-photoluminescent-carbon-nanotubes-for-imaging-of-brown-fat
#5
Masako Yudasaka, Yohei Yomogida, Minfang Zhang, Takeshi Tanaka, Masako Nakahara, Norihiko Kobayashi, Yuko Okamatsu-Ogura, Ken Machida, Kazuhiko Ishihara, Kumiko Saeki, Hiromichi Kataura
Near-infrared photoluminescent single-walled carbon nanotubes (CNTs) are expected to provide effectual bio-imaging tools, although, as yet, only limited applications have been reported. Here, we report that CNTs coated with an amphiphilic and biocompatible polymer, poly(2-methacryloyloxyethyl phosphorylcholine-co-n-butyl methacrylate; PMB), generate high-quality images of brown fat. Brown fat is a heat-productive adipose tissue, which is attracting increasing attention as a new therapeutic target for obesity-associated metabolic disorders...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28314730/genome-wide-single-nucleotide-polymorphism-analysis-identified-clonal-lineages-of-erysipelothrix-rhusiopathiae-responsible-for-the-recent-increased-incidence-of-acute-swine-erysipelas-in-japan
#6
Yohsuke Ogawa, Kazumasa Shiraiwa, Yoshitoshi Ogura, Tadasuke Ooka, Sayaka Nishikawa, Masahiro Eguchi, Tetsuya Hayashi, Yoshihiro Shimoji
Erysipelothrix rhusiopathiae causes swine erysipelas, an important infectious disease in the swine industry. In Japan, the incidence of acute swine erysipelas due to serovar 1a has recently increased markedly. To study the genetic relatedness of the strains from the recent cases, we analyzed 34 E. rhusiopathiae serovar 1a swine isolates collected between 1990 and 2011 and further investigated the possible association of the live Koganei 65-0.15 vaccine strain (serovar 1a) with the increase in cases. Pulsed-field gel electrophoresis analysis revealed no marked variation among the isolates; however, sequencing analysis of a hypervariable region in the surface protective antigen A (spaA) gene revealed that the strains isolated after 2007 exhibited the same spaA genotype and could be differentiated from older strains...
March 17, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28314301/efficacy-of-conversion-surgery-following-s-1-plus-cisplatin-or-oxaliplatin-chemotherapy-for-unresectable-gastric-cancer
#7
Minoru Fukuchi, Erito Mochiki, Toru Ishiguro, Toshiro Ogura, Jun Sobajima, Youichi Kumagai, Keiichiro Ishibashi, Hideyuki Ishida
BACKGROUND/AIM: To evaluate the efficacy of conversion surgery following S-1 plus cisplatin (CS) or oxaliplatin (SOX) chemotherapy. PATIENTS AND METHODS: We retrospectively analyzed clinicopathological and survival data of 74 patients with unresectable gastric cancer receiving CS or SOX. RESULTS: Fifty-five and nineteen patients received CS and SOX, respectively. Conversion surgery (odds ratio (OR), 0.17; 95% confidence interval (CI), 0.04-0...
March 2017: Anticancer Research
https://www.readbyqxmd.com/read/28303004/serum-fabp5-concentration-is-a-potential-biomarker-for-residual-risk-of-atherosclerosis-in-relation-to-cholesterol-efflux-from-macrophages
#8
Masato Furuhashi, Masatsune Ogura, Megumi Matsumoto, Satoshi Yuda, Atsuko Muranaka, Mina Kawamukai, Akina Omori, Marenao Tanaka, Norihito Moniwa, Hirofumi Ohnishi, Shigeyuki Saitoh, Mariko Harada-Shiba, Kazuaki Shimamoto, Tetsuji Miura
Cholesterol efflux capacity (CEC) from macrophages, the first step in the reverse cholesterol transport pathway, is inversely associated with residual risk for atherosclerotic cardiovascular disease. Fatty acid-binding protein 4 (FABP4) and FABP5 are expressed in both adipocytes and macrophages and play significant roles in the development of insulin resistance and atherosclerosis. Both FABP4 and FABP5 are secreted from cells, and their circulating levels are associated with insulin resistance and atherosclerosis...
March 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28289379/dichotomous-distribution-of-putative-cholinergic-interneurons-in-mouse-accessory-olfactory-bulb
#9
Sarah Marking, Kurt Krosnowski, Tatsuya Ogura, Weihong Lin
Sensory information processing in the olfactory bulb (OB) relies on diverse populations of bulbar interneurons. In rodents, the accessory OB (AOB) is divided into two bulbar regions, the anterior (aAOB) and posterior (pAOB), which differ substantially in their circuitry connections and associated behaviors. We previously identified and characterized a large number of morphologically diverse cholinergic interneurons in the main OB (MOB) using transgenic mice to visualize the cell bodies of choline acetyltransferase (ChAT-expressing neurons and immunolabeling (Krosnowski et al...
2017: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/28287879/circadian-blood-pressure-abnormalities-in-patients-with-primary-nephrotic-syndrome
#10
Kotaro Haruhara, Nobuo Tsuboi, Kentaro Koike, Go Kanzaki, Yusuke Okabayashi, Takaya Sasaki, Akira Fukui, Yoichi Miyazaki, Tetsuya Kawamura, Makoto Ogura, Takashi Yokoo
BACKGROUND: Only a few studies have evaluated the abnormalities of ambulatory blood pressure (ABP) in patients with nephrotic syndrome (NS). METHODS: The 24-h ABPs were measured in primary NS patients with acute onset of disease and analyzed in relation to the clinical variables. RESULTS: Our subjects comprised 21 patients: 17 with minimal change disease and 4 with focal segmental glomerulosclerosis. Of these patients, 8 (38%) had daytime hypertension, 13 (62%) had nighttime hypertension, and 13 (62%) were non-dippers (nighttime-to-daytime ratio of ABP: NDR > 0...
2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/28275485/serum-kl-6-and-surfactant-protein-d-as-monitoring-and-predictive-markers-of-interstitial-lung-disease-in-patients-with-systemic-sclerosis-and-mixed-connective-tissue-disease
#11
Hideaki Yamakawa, Eri Hagiwara, Hideya Kitamura, Yumie Yamanaka, Satoshi Ikeda, Akimasa Sekine, Tomohisa Baba, Koji Okudela, Tae Iwasawa, Tamiko Takemura, Kazuyoshi Kuwano, Takashi Ogura
BACKGROUND: Interstitial lung disease (ILD) is frequent complication of systemic sclerosis (SSc) and mixed connective tissue disease (MCTD). The disease is heterogeneous, and its outcome is unpredictable. Some patients have severe and progressive deterioration of ILD, which is the leading cause of mortality. We aimed to determine whether serum levels of Krebs von den Lungen-6 (KL-6) and surfactant protein-D (SP-D) correlate with SSc/MCTD-associated ILD activity. METHODS: We retrospectively analyzed the medical records of 40 patients with SSc/MCTD-associated ILD: 29 patients with SSc and 11 patients with MCTD...
February 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28268847/noninvasive-simultaneous-measurement-of-blood-pressure-and-blood-flow-velocity-for-hemodynamic-analysis
#12
Yuki Kato, Shunsuke Yoshimoto, Yoshihiro Kuroda, Masataka Imura, Shingo Yamashita, Toshihiko Ogura, Osamu Oshiro
We describe a noninvasive and simultaneous measurement method of beat-by-beat blood pressure and blood flow velocity waveforms in the radial artery using tonometry and Doppler flowmetry. We conducted a subjective experiment in which hold-down pressure of tonometry was controlled for determining optimal hold-down pressure and the measurement accuracy under the optimal hold-down pressure was evaluated. As a result, blood pressure and blood flow velocity could be measured simultaneously without the influence of the hold-down pressure on the blood flow velocity...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268211/reactions-of-buckwheat-hypersensitive-patients-during-oral-food-challenge-are-rare-but-often-anaphylactic
#13
Noriyuki Yanagida, Sakura Sato, Kyohei Takahashi, Ken-Ichi Nagakura, Kiyotake Ogura, Tomoyuki Asaumi, Motohiro Ebisawa
BACKGROUND: Buckwheat (BW) is a common cause of life-threatening allergy in Asia. Few have examined oral food challenges (OFCs) using BW. We here describe the OFC outcomes for the diagnosis or confirmation of tolerance acquisition and clarify risk factors for positive OFCs. METHODS: Between July 2005 and March 2014, we retrospectively reviewed data from children who underwent OFCs using 3,072 mg of BW protein at Sagamihara National Hospital. Children were suspected of having BW allergy because of positive results for BW-specific IgE or because they had been previously diagnosed with BW allergy owing to immediate reactions to BW...
March 8, 2017: International Archives of Allergy and Immunology
https://www.readbyqxmd.com/read/28261273/capacity-of-human-dental-follicle-cells-to-differentiate-into-neural-cells-in-vitro
#14
Shingo Kanao, Naomi Ogura, Kosuke Takahashi, Ko Ito, Masaaki Suemitsu, Kayo Kuyama, Toshirou Kondoh
The dental follicle is an ectomesenchymal tissue surrounding the developing tooth germ. Human dental follicle cells (hDFCs) have the capacity to commit to differentiation into multiple cell types. Here we investigated the capacity of hDFCs to differentiate into neural cells and the efficiency of a two-step strategy involving floating neurosphere-like bodies for neural differentiation. Undifferentiated hDFCs showed a spindle-like morphology and were positive for neural markers such as nestin, β-III-tubulin, and S100β...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28258459/significance-of-simultaneous-splenic-artery-resection-in-left-sided-portal-hypertension-after-pancreaticoduodenectomy-with-combined-portal-vein-resection
#15
Kazuyuki Gyoten, Shugo Mizuno, Motonori Nagata, Toru Ogura, Masanobu Usui, Shuji Isaji
BACKGROUND: In pancreaticoduodenectomy (PD) with resection of portal vein (PV)/superior mesenteric vein (SMV) confluence, the splenic vein (SV) division may cause left-sided portal hypertension (LPH). METHODS: The 88 pancreatic ductal adenocarcinoma patients who underwent PD with PV/SMV resection after chemoradiotherapy were classified into three groups: both SV and splenic artery (SA) were preserved in Group A (n = 16), SV was divided and SA was preserved in Group B (n = 58), and both SV and SA were divided in Group C (n = 14)...
March 3, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/28257041/photodynamic-detection-of-peritoneal-metastases-using-5-aminolevulinic-acid-ala
#16
REVIEW
Yutaka Yonemura, Yoshio Endo, Emel Canbay, Yang Liu, Haruaki Ishibashi, Akiyoshi Mizumoto, Masamitu Hirano, Yuuki Imazato, Nobuyuki Takao, Masumi Ichinose, Kousuke Noguchi, Yan Li, Satoshi Wakama, Kazuhiro Yamada, Koutarou Hatano, Hiroshi Shintani, Hiroyuki Yoshitake, Shun-Ichiro Ogura
In the past, peritoneal metastasis (PM) was considered as a terminal stage of cancer. From the early 1990s, however, a new comprehensive treatment consisting of cytoreductive surgery and perioperative chemotherapy has been established to improve long-term survival for selected patients with PM. Among prognostic indicators after the treatment, completeness of cytoreduction is the most independent predictors of survival. However, peritoneal recurrence is a main cause of recurrence, even after complete cytoreduction...
March 1, 2017: Cancers
https://www.readbyqxmd.com/read/28251056/sequential-double-clicks-toward-structurally-well-defined-heterogeneous-n-glycoclusters-the-importance-of-cluster-heterogeneity-on-pattern-recognition-in-vivo
#17
Liliya Latypova, Regina Sibgatullina, Akihiro Ogura, Katsumasa Fujiki, Alsu Khabibrakhmanova, Tsuyoshi Tahara, Satoshi Nozaki, Sayaka Urano, Kazuki Tsubokura, Hirotaka Onoe, Yasuyoshi Watanabe, Almira Kurbangalieva, Katsunori Tanaka
Structurally well-defined heterogeneous N-glycoclusters are prepared on albumin via a double click procedure. The number of glycan molecules present, in addition to the spatial arrangement of glycans in the heterogeneous glycoclusters, plays an important role in the in vivo kinetics and organ-selective accumulation through glycan pattern recognition mechanisms.
February 2017: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://www.readbyqxmd.com/read/28230204/high-resolution-imaging-of-living-mammalian-cells-bound-by-nanobeads-connected-antibodies-in-a-medium-using-scanning-electron-assisted-dielectric-microscopy
#18
Tomoko Okada, Toshihiko Ogura
Nanometre-scale-resolution imaging technologies for liquid-phase specimens are indispensable tools in various scientific fields. In biology, observing untreated living cells in a medium is essential for analysing cellular functions. However, nanoparticles that bind living cells in a medium are hard to detect directly using traditional optical or electron microscopy. Therefore, we previously developed a novel scanning electron-assisted dielectric microscope (SE-ADM) capable of nanoscale observations. This method enables observation of intact cells in aqueous conditions...
February 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28230102/identification-of-a-new-virulent-clade-in-enterohemorrhagic-escherichia-coli-o26-h11-h-sequence-type-29
#19
Nozomi Ishijima, Ken-Ichi Lee, Tomomi Kuwahara, Haruyuki Nakayama-Imaohji, Saori Yoneda, Atsushi Iguchi, Yoshitoshi Ogura, Tetsuya Hayashi, Makoto Ohnishi, Sunao Iyoda
Enterohemorrhagic Escherichia coli (EHEC) O26 infections cause severe human diseases such as hemolytic uremic syndrome and encephalopathy, and is the predominant serogroup among non-O157 EHEC in many countries. Shiga toxin (Stx), which consists of two distinct types (Stx1 and Stx2), plays a central role in EHEC pathogenesis. The major stx gene type in EHEC O26 strains is stx1, although isolates with only stx2 have emerged in Japan since 2012 and have been reported in Europe. In this study, we selected 27 EHEC O26 strains isolated in Japan and identified a distinct genetic clade within sequence type (ST) 29, designated ST29C1, that carried only stx2 and had the plasmid gene profile ehxA+/katP-/espP+/etpD-...
February 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28229482/total-synthesis-and-structural-revision-of-clavilactone%C3%A2-d
#20
Ken-Ichi Takao, Ryuichi Nemoto, Kento Mori, Ayumi Namba, Keisuke Yoshida, Akihiro Ogura
A structural revision of clavilactone D, a potent inhibitor of protein tyrosine kinases, was achieved by total syntheses of two newly proposed structures. The syntheses relied on ring-opening/ring-closing metathesis, which transformed a cyclobutenecarboxylate into a γ-butenolide. The syntheses confirmed that the correct structure of clavilactone D has an amino group at C-3 instead of a hydroxy group at C-2 in the originally proposed structure.
February 3, 2017: Chemistry: a European Journal
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