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Lactogenic hormones alter cellular and extracellular microRNA expression in bovine mammary epithelial cell culture

Journal of Animal Science and Biotechnology 2016年第4期7卷 504-513页

作者： Susumu Muroya Tatsuro Hagi Ataru Kimura Hisashi Aso Masatoshi Matsuzaki Masaru nomura Animal Products Research Division NARO Institute of Livestock and Grassland Science Faculty of Agriculture and Life Science Hirosaki University International Education and Research Center for Food and Agricultural Immunology(CFAI) Graduate School of Agricultural ScienceTohoku University

Background： Bovine milk contains not only a variety of nutritional ingredients but also microRNAs （miRNAs） that are thought to be secreted by the bovine mammary epithelial cells （BMECs）. The objective of this study was to elucidate the production of milk-related miRNAs in BMECs under the influence of lactogenic hormones. Results： According to a microarray result of milk exosomal miRNAs prior to cellular analyses, a total of 257 miRNAs were detected in a Holstein cow milk. Of these, 18 major miRNAs of interest in the milk were selected for an expression analysis in BMEC culture that was treated with or without dexamethasone, insulin, and prolactin （DIP） to induce a lactogenic differentiation. Quantitative polymerase chain reaction （qPCR） results showed that the expressions of miR-21-Sp （P = 0.005）, miR-26a （P = 0.016）, and miR-320a （P = 0.011） were lower in the DIP-treated cells than in the untreated cells. In contrast, the expression of miR-339a （P-- 0.017） in the cell culture medium were lower in the DiP-treated culture than in the untreated culture. Intriguingly, the miR-148a expression in cell culture medium was elevated by DIP treatment of BMEC culture （P = 0.018）. The medium-to-cell expression ratios of miR- 103 （P = 0.025）, miR-148a （P 〈 0.001）, and miR-223 （P = 0.013） were elevated in the DIP-treated BMECs, suggesting that the lactogenic differentiation-induced secretion of these three miRNAs in BMECs. A bioinformatic analysis showed that the miRNAs down-regulated in the BMECs were associated with the suppression of genes related to transcriptional regulation, protein phosphorylation, and tube development. Conclusion： The results suggest that the miRNAs changed by lactogenic hormones are associated with milk protein synthesis, and mammary gland development and maturation. The elevated miR-148a level in DIP-treated BMECs may be associated with its increase in milk during the lactation period of cows.

关键词： Bovine mammary epithelial cell Lactogenic differentiation microRNA Milk Secretion

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Semaphorin 3A controls allergic and inflammatory responses in experimental allergic conjunctivitis

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International Journal of Ophthalmology(English edition) 2015年第1期8卷 1-10页

作者： Junmi Tanaka Hideo Tanaka Nobuhisa Mizuki Eiichi nomura Norihiko Ito Naoko nomura Masayuki Yamane Tomonobu Hida Yoshio Goshima Hiroshi Hatano Hisashi Nakagawa Department of Ophthalmology and Visual Science Graduate School of MedicineYokohama City University Department of Ophthalmology Graduate School of MedicineUniversity of Tokyo Department of Obstetrics and Gynecology School of MedicineKeio University Department of Environmental Immuno-Dermatology Graduate School of MedicineYokohama City University Hatano Eye Clinic 438-1 FujisawaFujisawa Kanagawaken 251-0052Japan Tokushima Eye Clinic 1-2-14 Fujimi-choHigashimurayamaTokyo 189-0024Japan

AIM: To assess the efficacy of topical Semaphorin 3A(SEMA3A) in the treatment of allergic ***: Experimental allergic conjunctivitis(EAC)mice model induced by short ragweed pollen(SRW) in 4-week-old of BALB/c mice, mice were evaluated using haematoxylin and eosin(H&E) staining, immunofluor-escence and light microscope photographs. Early phase took the samples in 24 h after instillation and late phase took the samples between 4 to 14 d after the start of treatment. The study use of topical SEMA3A(10 U, 100 U,1000 U) eye drops and subconjunctival injection of SEMA3 A with same concentration. For comparison, five types of allergy eyedrops were quantified using clinical characteristics.· RESULTS: Clinical score of composite ocular symptoms of the mice treated with SEMA3 A were significantly decreased both in the immediate phase and the late phase compared to those treated with commercial ophthalmic formulations and non-treatment mice. SEMA3 A treatment attenuates infiltration of eosinophils entering into conjunctiva in EAC mice. The score of eosinophil infiltration in the conjunctiva of SEMA3 A 1000 U-treated group were significantly lower than low-concentration of SEMA3 A treated groups and non-treated group. SEMA3 A treatment also suppressed T-cell proliferation in vitro and decreased serum total Ig E levels in EAC mice. Moreover, treatment of SEMA3 A suppressed Th2-related cytokines(IL-5, IL-13 and IL-4)and pro-inflammatory cytokines(IFN-γ, IL-17 and TNF-α)release, but increased regulatory cytokine IL-10 concentration in the conjunctiva of EAC ***: SEMA3 A as a biological agent, showed the beneficial activity in ocular allergic processes with the less damage to the intraocular tissue. It is expected that SEMA3 A may be contributed in patients with a more severe spectrum of refractory ocular allergic diseases including allergic conjunctivitis in the near future.

关键词： Semaphorin 3A experimental allergic conjunctivitis eosinophil infiltration serum total Ig E cytokines instillation subconjunctival administration

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Combustion synthesis of YAG:Ce phosphors via the thermite reaction of aluminum

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Journal of Rare Earths 2018年第3期36卷 248-256页

作者： Junpei Ohyama Chunyu Zhu Genki Saito Miki Haga Takahiro nomura Norihito Sakaguchi Tomohiro Akiyama Center for Advanced Research of Energy and Materials Hokkaido UniversityKita 13 Nishi 8KitakuSapporo 060-8628Japan Division of Applied Chemistry&Frontier Chemistry Center Faculty of EngineeringHokkaido University5apporoHokkaido 060-8628Japan Graduate School of Chemical Sciences and Engineering Hokkaido University SapporoHokkaido 060-8628Japan

Cerium-doped yttrium aluminum garnet（YAG：Ce） as a yellow phosphor for white light-emitting diodes（LEDs） was synthesized via a facile combustion method using Y2 O3, CeO2, Al2 O3, Al,and NaClO4 as raw materials. The combustion synthesis approach utilizes the strong exothermic oxidation of aluminum to realize a self-sustaining reaction. In this study, we investigated the effects of the ratios of Al2 O3 to AI,fluxes, and coprecipitated materials as raw materials on the luminescence properties of the synthesized YAG：Ce phosphors. When the amount of Al2 O3 x is varied, the combustion reaction proceeds at x ≤ 1.8,with x = 1.725 being the optimum condition for producing a high-performance product. When 5 wt%BaF2 is added, the luminescence intensity is significantly improved owing to a decrease of YAP（YAlO3）formation with improved uniformity. However, the addition of CaF2 and NaF does not improve the luminescence properties. To suppress the segregation of CeO2, we used the coprecipitated material Y2 O3-CeO2 as a raw material. Unlike with separate addition of Y2 O3 and CeO2, Ce ions are uniformly distributed in the coprecipitated material, resulting in improved luminescence properties. The combination of BaF2 and coprecipitated material significantly improves the internal quantum efficiency to83.0%, which is close to that of commercial phosphors.

关键词： Phosphor Yttrium aluminum garnet Combustion synthesis Flux Coprecipitated material Rare earths

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Spatio-temporal deposition profile of an experimentally produced turbidity current with a continuous suspension supply

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International Journal of Sediment Research 2022年第3期37卷 299-306页

作者： Shun nomura Giovanni De Cesare Mikito Furuichi Yasushi Takeda Hide Sakaguchi Mathematical Science and Advanced Technology JAMSTEC Plateforme de Constructions Hydrauliques EPFL Laboratory of Food Process Engineering ETH Headquarters JAMSTEC

A turbidity current is a turbulent, particle-laden gravity current that is driven by density differences resulting from the presence of suspended sediment particles. The current travels downslope, bearing a large amount of sediment over a great distance, and forms fluvial and submarine bedforms. Knowledge of the spatio-temporal deposition profile of turbidity-deposited sediment is important for a better understanding of sediment transport by turbidity currents. In the current study, the depositional process of experimentally produced quasi-steady turbidity currents in an inclined flume was investigated using an electrical-resistance-based depositmeter. It was found that the amount of sediment deposited along the flume bottom increases linearly with time at a specific rate, and decreases exponentially in the downstream direction. Inspired by this observation, the mass conservation law was modified for the suspension layer and a simple theoretical model was proposed involving two parameters, the initial sedimentation rate and the decay constant. The proposed model reproduces the observed data from the flume experiment with high accuracy, and is consistent with the sediment transport distance of a natural example, the Bengal Fan. It was concluded that the two parameters that govern the sedimentation process are the key to estimating the deposition profile of fluvial systems.

关键词： Turbidity current Deposition process Mass conservation law Electrical-resistance-based depositmeter Spatio-temporal investigation Flume experiment

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Quasi-stationary flow structure in turbidity currents

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International Journal of Sediment Research 2020年第6期35卷 659-665页

作者： Shun nomura Giovanni De Cesare Mikito Furuichi Yasushi Takeda Hide Sakaguchi Center for Mathematical Science and Advanced Technology JAMSTEC Plateforme de Constructions Hydrauliques EPFL Laboratory of Food Process Engineering ETH Headquarters JAMSTEC

A turbidity current is a particle-laden current driven by density differences due to suspended sediment *** currents can transport large amounts of sediment down slopes over great distances,and play a significant role in fluvial,lake and submarine *** better understand the sediment transport process,the flow system of an experimentally produced turbidity current in an inclined flume was investigated using video *** observed that the current progresses with constant frontal velocity and maintains an unchanged global interface *** addition,the spatio-temporal profiles of the inner mean and turbulence velocity obtained by ultrasound velocity profiler(UVP) showed that similar distributions were maintained,with low *** results indicate that the turbidity current progressed in a quasi-stationary state,which enabled long-distance sediment *** understand the mechanisms behind the quasi-stationary flow,we analyzed the forces acting on the turbidity *** found that under particular densities of suspended particles,the gravitational force is balanced by the viscous forces along the slope *** conclude that this specific force balance induces the quasi-stationary flow structure,enabling the long-distance transport of a substantial amount of sediment downstream with low dissipation.

关键词： Turbidity current Velocity field Mass valance Image processing Ultrasound Doppler velocity profiling Flume experiment

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Autonomous reinforcement learning agent for stretchable kirigami design of 2D materials

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npj Computational Materials 2021年第1期7卷 934-941页

作者： Pankaj Rajak Beibei Wang Ken-ichi nomura Ye Luo Aiichiro Nakano Rajiv Kalia Priya Vashishta Argonne Leadership Computing Facility Argonne National LaboratoryArgonneILUSA Collaboratory for Advanced Computing and Simulations University of Southern CaliforniaLos AngelesCAUSA Department of Physics and Astronomy University of Southern CaliforniaLos AngelesCAUSA Department of Chemical Engineering and Materials Science University of Southern CaliforniaLos AngelesCAUSA Department of Computer Science University of Southern CaliforniaLos AngelesCAUSA

Mechanical behavior of 2D materials such as MoS_(2) can be tuned by the ancient art of *** and atomistic simulations show that 2D materials can be stretched more than 50%by strategic insertion of ***,designing kirigami structures with desired mechanical properties is highly sensitive to the pattern and location of kirigami *** use reinforcement learning(RL)to generate a wide range of highly stretchable MoS_(2) kirigami *** RL agent is trained by a small fraction(1.45%)of molecular dynamics simulation data,randomly sampled from a search space of over 4 million candidates for MoS_(2)kirigami structures with 6 *** training,the RL agent not only proposes 6-cut kirigami structures that have stretchability above 45%,but also gains mechanistic insight to propose highly stretchable(above 40%)kirigami structures consisting of 8 and 10 cuts from a search space of billion candidates as zero-shot predictions.

关键词： agent learning stretch

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Narrow portion of the terminal choledochus is a cause of upstream biliary dilatation in patients with anomalous union of the pancreatic and biliary ducts

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World Journal of Gastroenterology 2005年第41期11卷 6503-6507页

作者： Tatsuya nomura Yoshio Shirai Toshifumi Wakai Naoyuki Yokoyama Jun Sakata Katsuyoshi Hatakeyama Division of Digestive and General Surgery Niigata University Graduate School of Medical and Dental Sciences 1 Asahimachi-doriNiigata951-8510Japan

AIM: To clarify the pathogenesis of biliary dilatation associated with anomalous union of the pancreatic and biliary ducts (AUPBD).METHODS: Direct cholangiopancreatograms of 350 adult patients with or with suspicion of hepatobiliary or pancreatic disorders were reviewed. AUPBD was diagnosed cholangiopancreatographically, when the pancreaticobiliary ductal union was located above the narrow distal segment of the bile duct, which represents the action of the sphincter of Oddi. The narrow portion of the terminal choledochus was defined as symmetrical stricture of the common bile duct just above the pancreaticobiliary ductal ***: AUPBD was found in 36 patients. Among cholangiopancreatographic features, the narrow portion of the terminal choledochus was the most pathognomonic for AUPBD (accuracy, 98%); it was present in 29 (81%)patients with AUPBD, but was not found in any patients without AUPBD. Among patients with AUPBD, biliary dilatation (＞10 mm) was more frequent in those with the narrow portion of the terminal choledochus (23/29)than in those without (2/7; P = 0.018) AUPBD. Among the patients with both AUPBD and the narrow portion of the terminal choledochus, there was a strong negative correlation between the minimum diameter of the narrow portion and the maximum diameter of the choledochus (r = -0.78, P＜0.001), suggesting that the degree of biliary narrowing at the narrow portion correlates with that of upstream biliary ***: The narrow portion of the terminal choledochus, a pathognomonic radiologic feature of AUPBD, may be a cause of biliary dilatation in patients with AUPBD.

关键词： Anomalous Biliary dilatation Congenital biliary dilatation Congenital choledochal cyst Terminal choledochus Cholangiopancreatography

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Significance of a novel sucrose permeability test using serum in the diagnosis of early gastric cancer

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World Journal of Gastroenterology 2005年第44期11卷 6905-6909页

作者： Tadayuki Shishido Taketo Yamaguchi Takeo Odaka Masanori Seimiya Hiromitsu Saisho Fumio nomura Department of Medicine and Clinical Oncology Department of Molecular Diagnosis

AIM： To investigate the usefulness of sucrose permeability test using serum in the diagnosis of gastric diseases, with special reference to early gastric cancer （EGC）. METHODS： A total of 63 subjects, including 11 patients with gastric ulcer, 20 patients with gastric cancer （13, early; 7, advanced） and 32 healthy controls, were studied. Blood and urine samples were collected repeatedly for 5 h before and after the sucrose loading. Sucrose levels were measured by a newly developed RESULTS： Serum sucrose levels started to increase 15 min after loading, and peaked at 60 min in the gastric disease groups. The levels for gastric ulcer, EGC and advanced gastric cancer （AGC） at 60 min were significantly higher than that in the healthy controls （26.9±2.4, 34.4±5.0, and 71.8±15.6 vs 7.9±0.7 mol/L, respectively, P〈0.01）. The cut-off level set at 15.4 mol/L （60 min） offered the best distinction between EGC patients and healthy controls; and the sensitivity and specificity were 92.3% and 93.8%, respectively, while those of the urine method were 76.9% and 93.8%, respectively. CONCLUSIONS： The gastric permeability test using serum is reliable for the detection of EGC, and this test can provide results much earlier than the conventional urine method. This test may offer a useful alternative to more invasive tests for EGC.

关键词： Sucrose test Gastric permeability Early gastric cancer Advanced gastric cancer Gastric ulcer

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Catheter tract implantation metastases associated with percutaneous biliary drainage for extrahepatic cholangiocarcinoma

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World Journal of Gastroenterology 2005年第44期11卷 7024-7027页

作者： Jun Sakata Yoshio Shirai Toshifumi Wakai Tatsuya nomura Eiko Sakata Katsuyoshi Hatakeyama Division of Digestive and General Surgery

AIM： To estimate the incidence of catheter tract implantation metastasis among patients undergoing percutaneous transhepatic biliary drainage （PTBD） for extrahepatic cholangiocarcinoma, and to provide data regarding the management of this unusual complication of PTBD by reviewing cases reported in the literature. METHODS： A retrospective analysis of 67 consecutive patients who underwent PTBD before the resection of extrahepatic cholangiocarcinoma was conducted. The median follow-up period after PTBD was 106 too. The English language literature （PubMed, National Library of Medicine, Bethesda, MD, USA）, from .lanuary 1966 through December 2004, was reviewed. RESULTS： Catheter tract implantation metastasis developed in three patients. The cumulative incidence of implantation metastasis reached a plateau （6%） at 20 mo after PTBD. All of the three patients with implantation metastasis died of tumor progression at 3, 9, and 20 mo after the detection of this complication. Among the 10 reported patients with catheter tract implantation metastasis from extrahepatic cholangiocarcinoma （including our three patients）, two survived for more than 5 years after the excision of isolated catheter tract metastases. CONCLUSION： Catheter tract implantation metastasis is not a rare complication following PTBD for extrahepatic cholangiocarcinoma. Although the prognosis for patients with this complication is generally poor, the excision of the catheter tract may enable survival in selected patients with isolated metastases along the catheter tract.

关键词： Neoplasm seeding Extrahepatic cholangiocarcinoma Percutaneous transhepatic biliary drainage Malignant biliary obstruction Surgery Prognosis

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Update of g-2 of the muon and △α

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Chinese Physics C 2010年第6期34卷 728-734页

作者： T.Teubner K.Hagiwara R.Liao A.D.Martin Daisuke nomura Department of Mathematical Sciences University of Liverpool Theory Center KEK Department of Physics and Institute for Particle Physics Phenomenology University of Durham

We update our Standard Model predictions for g-2 of the muon and for the hadronic contributions （5） 2 to the running of the QED coupling, Δαbad^5）（MZ^2）. Particular emphasis is put on recent changes in the had... 详细信息

关键词： Anomalous magnetic moment muon running coupling hadronic contributions

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