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https://www.readbyqxmd.com/read/29037032/substituent-effect-on-intramolecular-charge-transfer-of-symmetric-methoxy-substituted-bi-1-3-4-oxadiazole-derivatives
#1
Fangyi Chen, Wanxi Zhang, Taiji Tian, Binglian Bai, Haitao Wang, Min Li
Intramolecular charge transfer characteristics of a series symmetric methoxy substituted bi-1,3,4-oxadiazole derivatives with various substituted positions and quantites, have been studied with a combination of experimental techniques and theoretical calculations, to investigate the substituent effect. Different degrees of fluorescence red-shift in polar solvents are observed in these compounds. The meta-substituted molecule (BOXD-m-OCH3) exhibits a larger red-shift (82 nm) than the other two mono-substituted molecules, BOXD-o-OCH3 (40 nm) and BOXD-p-OCH3 (37 nm); the poly-substituted molecules BOXD-D1 and BOXD-T1 show 80 nm and 104 nm red shift, respectively, which are obviously larger than the mono-substituted molecules...
October 16, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/29027020/analysis-of-ca-2-response-of-osteocyte-network-by-three-dimensional-time-lapse-imaging-in-living-bone
#2
Tomoyo Tanaka, Mitsuhiro Hoshijima, Junko Sunaga, Takashi Nishida, Mana Hashimoto, Naoya Odagaki, Ryuta Osumi, Taiji Aadachi, Hiroshi Kamioka
Osteocytes form a three-dimensional (3D) cellular network within the mineralized bone matrix. The cellular network has important roles in mechanosensation and mechanotransduction related to bone homeostasis. We visualized the embedded osteocyte network in chick calvariae and observed the flow-induced Ca(2+) signaling in osteocytes using 3D time-lapse imaging. In response to the flow, intracellular Ca(2+) ([Ca(2+)]i) significantly increased in developmentally mature osteocytes in comparison with young osteocytes in the bone matrix...
October 12, 2017: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/29023585/correlations-between-local-peripapillary-choroidal-thickness-and-axial-length-optic-disc-tilt-and-papillo-macular-position-in-young-healthy-eyes
#3
Takehiro Yamashita, Taiji Sakamoto, Naoya Yoshihara, Hiroto Terasaki, Minoru Tanaka, Yuya Kii, Kumiko Nakao
Optical coherence tomography (OCT) has made it possible for clinicians to measure the peripapillary choroidal thickness (ppCT) noninvasively in various ocular diseases. However, the ocular factors associated with the ppCT have not been conclusively determined. The purpose of this study was to determine the relationship between the local ppCT and the axial length, optic disc tilt, and the angle of the papillo-macular position (PMP) in healthy eyes. This was a prospective, observational cross-sectional study of 119 right eyes of 119 healthy Japanese volunteers...
2017: PloS One
https://www.readbyqxmd.com/read/28993578/characterizations-of-oral-microbiota-in-elderly-nursing-home-residents-with-diabetes
#4
Taiji Ogawa, Mariko Honda-Ogawa, Kazunori Ikebe, Yumiko Notomi, Yoshiko Iwamoto, Itsuki Shirobayashi, Seiko Hata, Masahito Kibi, Shizuko Masayasu, Satoshi Sasaki, Shigetada Kawabata, Yoshinobu Maeda
Over 700 bacterial species have been detected in the oral cavity. Several studies have suggested that periodontitis is associated with systemic disorders such as diabetes mellitus, indicating a key role for oral microbiota in human health. However, the relationship between oral microbiota and diabetes has not been well clarified. Therefore, we conducted microbiome analysis of saliva samples obtained from 15 elderly residents (3 with type 2 diabetes mellitus [DM] and 12 without diabetes [non-DM]) at three different nursing homes, as well as 9 young healthy controls (HC)...
October 6, 2017: Journal of Oral Science
https://www.readbyqxmd.com/read/28992095/the-reduction-of-heparan-sulphate-in-the-glomerular-basement-membrane-does-not-augment-urinary-albumin-excretion
#5
Satoshi Aoki, Akiko Saito-Hakoda, Takeo Yoshikawa, Kyoko Shimizu, Kiyomi Kisu, Susumu Suzuki, Kiyoshi Takagi, Shuji Mizumoto, Shuhei Yamada, Toin H van Kuppevelt, Atsushi Yokoyama, Taiji Matsusaka, Hiroshi Sato, Sadayoshi Ito, Akira Sugawara
Background: Heparan sulphate proteoglycan (HSPG) is present in the glomerular basement membrane (GBM) and is thought to play a major role in the glomerular charge barrier. Reductions and structural alterations of HSPG are observed in different types of kidney diseases accompanied by proteinuria. However, their causal relations remain unknown. Methods: We generated podocyte-specific exostosin-like 3 gene ( Extl3 ) knockout mice ( Extl3KO ) using a Cre-loxP recombination approach...
July 8, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28991715/clinical-and-pathological-findings-in-familial-amyloid-polyneuropathy-caused-by-a-transthyretin-e61k-mutation
#6
Tatsufumi Murakami, Hirotake Nishimura, Taiji Nagai, Shoji Hemmi, Yumiko Kutoku, Yutaka Ohsawa, Yoshihide Sunada
Familial amyloid polyneuropathy (FAP) is an autosomal dominant hereditary systemic amyloidosis caused by mutation of the transthyretin (TTR) gene, and usually shows sensory-dominant polyneuropathy and autonomic neuropathy at the initial stage. The pathogenesis of this neuropathy remains unknown, although several mechanisms, including mechanical compression, vessel occlusion, TTR toxicity and Schwann cell dysfunction have been proposed. We describe a patient with late-onset FAP caused by a TTR E61K mutation...
October 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28984741/foveal-retinal-neovascularization-in-proliferative-diabetic-retinopathy-assessment-by-optical-coherence-tomography-angiography
#7
Sakura Murakawa, Taiji Hasegawa, Hideki Koizumi, Ichiro Maruko, Tomohiro Iida
No abstract text is available yet for this article.
October 3, 2017: Retina
https://www.readbyqxmd.com/read/28984572/total-hip-arthroplasty-via-the-direct-anterior-approach-with-a-dual-mobility-cup-for-displaced-femoral-neck-fracture-in-patients-with-a-high-risk-of-dislocation
#8
Hironori Ochi, Tomonori Baba, Yasuhiro Homma, Mikio Matsumoto, Taiji Watari, Yu Ozaki, Hideo Kobayashi, Kazuo Kaneko
INTRODUCTION: Although total hip arthroplasty (THA) is superior to bipolar hemiarthroplasty (BHA) for displaced femoral neck fracture in terms of hip pain, function and reoperation rate, THA has a higher rate of dislocation. The direct anterior approach (DAA) and a dual mobility cup (DMC) are associated with lower rates of dislocation. The aim of this study was to investigate the outcomes of THA compared with BHA, and in those patients who had a THA we investigated those with a DMC (DMC-THA) and compared them with those had a single conventional cup (Single cup-THA)...
2017: SICOT-J
https://www.readbyqxmd.com/read/28983564/effect-of-circulating-omentin-1-on-the-retinal-circulation-in-patients-with-type-2-diabetes-mellitus
#9
Tsuneaki Omae, Taiji Nagaoka, Akitoshi Yoshida
Purpose: To identify any significant correlations between retinal circulatory parameters and serum concentrations of omentin-1, a novel adipokine produced by adipocytes, in patients suffering from type 2 diabetes mellitus. Methods: Eighty-seven patients suffering from type 2 diabetes and incipient diabetic retinopathy (DR) were analyzed and further divided into two groups according to sex. We compared the patients' retinal circulatory parameters measured with laser Doppler velocimetry and serum omentin-1 concentrations...
October 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28956171/the-baba-classification-focused-on-implant-designs-is-useful-in-setting-the-therapeutic-strategy-for-interprosthetic-femoral-fracture
#10
Tomonori Baba, Kazuo Kaneko, Yasuhiro Homma, Hironori Ochi, Yu Ozaki, Taiji Watari, Mikio Matsumoto
PURPOSE: The purpose of this study was to investigate the clinical outcomes of femoral fracture with implants on the proximal and distal sides to verify whether actual fracture morphologies follow the fracture types of Baba classification focusing on implant designs useful for periprosthetic femoral fracture. METHODS: Prosthesis was present in 85 with periprosthetic femoral fractures. Excluding 73 patients with fracture around the femoral stem or fracture of the TKA femoral component alone, 12 patients with 14 legs with both implants were investigated...
September 27, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28955765/identification-of-ligand-selective-peptidic-actriib-antagonists-using-phage-display-technology
#11
Kotaro Sakamoto, Yoko Kanematsu-Yamaki, Yusuke Kamada, Masahiro Oka, Toshiyuki Ohnishi, Masanori Miwa, Taiji Asami, Hiroshi Inooka
ActRIIB (activin receptor type-2B) is an activin receptor subtype constitutively expressed in the whole body, playing a role in cellular proliferation, differentiation, and metabolism. For its various physiological activities, ActRIIB interacts with activin and multiple other ligands including myostatin (MSTN), growth differentiation factor 11 (GDF11), and bone morphogenetic protein 9 (BMP9). Notably, the protein-protein interaction (PPI) between ActRIIB and MSTN negatively controls muscular development. Therefore, this PPI has been targeted for effective treatment of muscle degenerative diseases such as muscular dystrophy and sarcopenia...
September 2017: Biochemistry and Biophysics Reports
https://www.readbyqxmd.com/read/28952396/adipocytes-do-not-significantly-contribute-to-plasma-angiotensinogen
#12
Masahiro Koizumi, Fumio Niimura, Masafumi Fukagawa, Taiji Matsusaka
Recently, it has been reported that 25% of plasma angiotensinogen (Agt) is derived from fat. Meanwhile, liver-specific Agt knockout (KO) mice have markedly low plasma Agt, which may be due to reduced fat mass. To study the contribution of the fat to plasma Agt, we tested whether increasing fat mass can elevate plasma Agt and blood pressure in liver- Agt KO mice. Epididymal fat mass in liver- Agt KO mice fed a high-fat diet (HFD) was 4.1-fold larger than that in liver- Agt KO mice on a normal-fat diet (NFD)...
October 2016: Journal of the Renin-angiotensin-aldosterone System: JRAAS
https://www.readbyqxmd.com/read/28937461/white-blood-cell-count-and-c-reactive-protein-variations-after-posterior-surgery-with-intraoperative-radiotherapy-for-spinal-metastasis
#13
Shurei Sugita, Takahiro Hozumi, Kiyofumi Yamakawa, Takahiro Goto, Taiji Kondo
STUDY DESIGN: Retrospective case series. OBJECTIVE: To evaluate the feasibility of blood test parameters [white blood cell (WBC) count and C-reactive protein (CRP)] for predicting and diagnosing postoperative infection after posterior surgery with intraoperative radiotherapy (IORT) for spinal metastasis. SUMMARY OF BACKGROUND DATA: Posterior surgery with IORT is effective for treating spinal metastasis, as we previously reported. However, the procedure requires that the patient be transferred from the operating room to the irradiation room...
October 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28936721/a-novel-resveratrol-derivative-selectively-inhibits-the-proliferation-of-colorectal-cancer-cells-with-kras-mutation
#14
Haruna Okamoto, Taiji Matsukawa, Satoshi Doi, Toshiyuki Tsunoda, Yuuga Sawata, Madoka Naemura, Koichiro Ohnuki, Senji Shirasawa, Yojiro Kotake
Resveratrol is a polyphenolic compound in many edible foods including grapes, peanuts, and berries. Several studies have revealed the beneficial effects of resveratrol against various diseases such as heart disease, diabetes, obesity, neurological disorders, and cancer. A recent study showed that resveratrol inhibits the proliferation of HCT116 human colorectal cancer cells in three-dimensional culture (3DC) via induction of luminal apoptosis in HCT116 cell spheroids. In this study, we showed that a novel compound, caffeic acid-adducted resveratrol, has a stronger inhibitory effect on the growth of HCT116 cell spheroids in 3DC than resveratrol...
September 21, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28935264/a-potent-neuromedin-u-receptor-2-selective-alkylated-peptide
#15
Naoki Nishizawa, Yoko Kanematsu-Yamaki, Masaaki Funata, Hiroaki Nagai, Ayako Shimizu, Hisashi Fujita, Junichi Sakamoto, Shiro Takekawa, Taiji Asami
Neuromedin U (NMU) mediates various physiological functions via NMUR1 and NMUR2 receptors. NMUR2 has been considered a promising treatment option for diabetes and obesity. Although NMU-8, a shorter peptide, has potent agonist activity for both receptors, it is metabolically unstable. Therefore, NMU-8 analogs modified with long-chain alkyl moieties via a linker were synthesized. An octadecanoyl analog (17) with amino acid substitutions [αMePhe(19), Nle(21), and Arg(Me)(24)] and a linker [Tra-γGlu-PEG(2)] dramatically increased NMUR2 selectivity, with retention of high agonist activity...
September 9, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28923372/in-vitro-tubulogenesis-of-madin-darby-canine-kidney-mdck-spheroids-occurs-depending-on-constituent-cell-number-and-scaffold-gel-concentration
#16
Tsuyoshi Hirashima, Miho Hoshuyama, Taiji Adachi
In vitro tubulogenesis has been employed as an experimental model system to study tissue morphogenesis of internal organs. It has been previously shown that Madin-Darby canine kidney (MDCK) cells form tubes in the presence of hepatocyte growth factor in 3D cultures. Although these cells are expected to form tube structures in some microenvironments independent of chemical stimulation, little is known about the cellular mechanisms in organizing such an anisotropic multicellular structure. Here, we report 3D culture conditions that induce MDCK tubulogenesis without growth factor stimulation...
December 21, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28917449/highly-potent-antiobesity-effect-of-a-short-length-peptide-yy-analog-in-mice
#17
Naoki Nishizawa, Ayumu Niida, Yusuke Adachi, Yoko Kanematsu-Yamaki, Yasushi Masuda, Satoshi Kumano, Kotaro Yokoyama, Yoko Noguchi, Tomoko Asakawa, Hideki Hirabayashi, Nobuyuki Amano, Shiro Takekawa, Tetsuya Ohtaki, Taiji Asami
Continuous administration of a 14-amino acid peptide YY (PYY) analog, Ac-[d-Pro(24),Pya(4)(26),Cha(27,36),Aib(28,31),Lys(30)]PYY(23-36) (4), which has a high binding affinity and agonist activity for the neuropeptide Y2 receptor (Y2R), has previously shown an antiobesity effect in a 2-week diet-induced obesity (DIO) study in mice. However, there remained a possibility to obtain more potent analogs by further improving its pharmacokinetic profile. A combination of the N-terminal 4-imidazolecarbonyl moiety and three amino acid substitutions, trans-4-hydroxy-d-proline (d-Hyp)(24), isovaline (Iva)(25), and γ-methylleucine (γMeLeu)(28), not only improved the binding affinity of the peptide for Y2R but also increased its anorectic activity in lean mice...
September 1, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28911331/dynamic-dna-methylation-reconfiguration-during-seed-development-and-germination
#18
Taiji Kawakatsu, Joseph R Nery, Rosa Castanon, Joseph R Ecker
BACKGROUND: Unlike animals, plants can pause their life cycle as dormant seeds. In both plants and animals, DNA methylation is involved in the regulation of gene expression and genome integrity. In animals, reprogramming erases and re-establishes DNA methylation during development. However, knowledge of reprogramming or reconfiguration in plants has been limited to pollen and the central cell. To better understand epigenetic reconfiguration in the embryo, which forms the plant body, we compared time-series methylomes of dry and germinating seeds to publicly available seed development methylomes...
September 15, 2017: Genome Biology
https://www.readbyqxmd.com/read/28904315/microbiological-assessment-of-effects-of-clinical-mouth-rinses-on-common-oral-microbes
#19
Taiji Ogawa, Mariko Honda-Ogawa, Kazunori Ikebe, Shigetada Kawabata, Yoshinobu Maeda
Dry mouth occurs frequently in aged individuals, as well as in patients who are hospitalized, receiving multiple drugs, undergoing radiation treatment to the head and neck, or wearing a removable denture prosthesis, use of mouth rinse being often an option for relief. In the present study, we performed microbiological assessments of subjects given three different commercially available mouth rinses commonly employed in clinical practice (Peptisal, Biotène, ConCool) to determine their effects. For bacterial clearance in vitro, Peptisal showed the highest level of suppression of oral indigenous bacteria found in both planktonic formations and biofilm...
2017: Journal of Oral Science
https://www.readbyqxmd.com/read/28860231/ultraviolet-b-exposure-inhibits-angiotensin-ii-induced-abdominal-aortic-aneurysm-formation-in-mice-by-expanding-cd4-foxp3-regulatory-t-cells
#20
Tomohiro Hayashi, Naoto Sasaki, Tomoya Yamashita, Taiji Mizoguchi, Takuo Emoto, Hilman Zulkifli Amin, Keiko Yodoi, Takuya Matsumoto, Kazuyuki Kasahara, Naofumi Yoshida, Tokiko Tabata, Naoki Kitano, Atsushi Fukunaga, Chikako Nishigori, Yoshiyuki Rikitake, Ken-Ichi Hirata
BACKGROUND: Pathogenic immune responses are known to play an important role in abdominal aortic aneurysm (AAA) development. Ultraviolet B (UVB) irradiation has been demonstrated to have therapeutic potential not only for cutaneous diseases but also for systemic inflammatory diseases in mice by suppressing immunoinflammatory responses. We investigated the effect of UVB irradiation on experimental AAA. METHODS AND RESULTS: We used an angiotensin II-induced AAA model in apolipoprotein E-deficient mice fed a high-cholesterol diet...
August 31, 2017: Journal of the American Heart Association
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