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https://www.readbyqxmd.com/read/28647647/itraq-based-quantitative-analysis-of-alveolar-bone-resorption-in-rats-with-experimental-periodontitis
#1
Weidong Yang, Yafan Gao, Yajie Qian, Jingjing Li, Qingang Hu
OBJECTIVE: Periapical periodontitis results in alveolar bone resorption around the root apex. During the progression of inflammation, host cells release various inflammatory mediators and pro-inflammatory cytokines through immune responses. However, the pathological mechanisms associated with periapical bone destruction remain unclear. This study was objected to identify differentially regulated proteins in periapical periodontitis via a quantitative proteomics approach using isobaric tags for relative and absolute quantification (iTRAQ) labelling of peptides...
June 13, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28643619/dietary-leucine-supplementation-alters-energy-metabolism-and-induces-slow-to-fast-transitions-in-longissimus-dorsi-muscle-of-weanling-piglets
#2
Qiwen Fan, Baisheng Long, Guokai Yan, Zhichang Wang, Min Shi, Xiaoyu Bao, Jun Hu, Xiuzhi Li, Changqing Chen, Zilong Zheng, Xianghua Yan
Leucine plays an important role in promoting muscle protein synthesis and muscle remodelling. However, what percentage of leucine is appropriate in creep feed and what proteome profile alterations are caused by dietary leucine in the skeletal muscle of piglets remain elusive. In this case, we applied isobaric tags for relative and absolute quantitation to analyse the proteome profile of the longissimus dorsi muscles of weanling piglets fed a normal leucine diet (NL; 1·66 % leucine) and a high-leucine diet (HL; 2·1 % leucine)...
May 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28642470/quantitative-proteomics-analysis-reveals-novel-targets-of-mir-21-in-zebrafish-embryos
#3
Ying Wu, Qi-Yong Lou, Feng Ge, Qian Xiong
MicroRNAs (miRNAs) are noncoding RNAs which control gene expression by the suppression of translation or the degradation of mRNAs. Dre-miR-21 (miR-21) has been reported to impact cardiac valvulogenesis in zebrafish embryos. However, the target genes of miR-21 are still largely unknown. Here a tandem isobaric mass tag (TMT)-based quantitative proteomic strategy was employed to identify the global profile of miR-21-regulated proteins. A total of 251 proteins were dysregulated after miR-21 knockdown, suggesting that they may be regulated by miR-21...
June 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28641411/development-of-an-lc-hrms-metabolomics-method-with-high-specificity-for-metabolite-identification-using-all-ion-fragmentation-aif-acquisition
#4
Shama Naz, Hector Gallart-Ayala, Stacey Reinke, Caroline Mathon, Richard Blankley, Romanas Chaleckis, Craig Edward Wheelock
High-resolution mass spectrometry (HRMS)-based metabolomics approaches have made significant advances. However, metabolite identification is still a major challenge and significant bottleneck in translating metabolomics data into biological context. In the current study, a liquid chromatography (LC)-HRMS metabolomics method was developed using an all ion fragmentation (AIF) acquisition approach. In order to increase the specificity in metabolite annotation, four criteria were considered: i) accurate mass (AM), ii) retention time (RT), iii) MS/MS spectrum, and iv) product/precursor ion intensity ratios...
June 22, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28631226/introduction-of-a-simple-second-tier-screening-test-for-c5-isobars-in-dried-blood-spots-reducing-the-false-positive-rate-for-isovaleric-acidaemia-in-expanded-newborn-screening
#5
R S Carling, D Burden, I Hutton, R Randle, K John, J R Bonham
In 2015 the English Newborn Screening programme expanded to include Isovaleric Acidaemia (IVA). Screening is performed by flow injection analysis tandem mass spectrometry of isovalerylcarnitine. Isovalerylcarnitine is isobaric with pivaloylcarnitine which can be present in blood due to the use of pivalic ester pro-drugs or pivalic acid derivatives used as emollients in some nipple creams; the potential for false positives (FP) is well documented. A pilot study in England screened 438,164 babies, 18 had presumptive positive results but only 4 were confirmed as true positives (TP)...
June 20, 2017: JIMD Reports
https://www.readbyqxmd.com/read/28628644/targeting-multiple-pro-apoptotic-signaling-pathways-with-curcumin-in-prostate-cancer-cells
#6
Mariela Rivera, Yanilda Ramos, Madeline Rodríguez-Valentín, Sheila López-Acevedo, Luis A Cubano, Jin Zou, Qiang Zhang, Guangdi Wang, Nawal M Boukli
Curcumin, an extract from the turmeric rhizome (Curcuma longa), is known to exhibit anti-inflammatory, antioxidant, chemopreventive and antitumoral activities against aggressive and recurrent cancers. Accumulative data indicate that curcumin may induce cancer cell death. However, the detailed mechanism underlying its pro-apoptotic and anti-cancer effects remains to be elucidated. In the present study, we examined the signaling pathways triggered by curcumin, specifically, the exact molecular mechanisms of curcumin-induced apoptosis in highly metastatic human prostate cancer cells...
2017: PloS One
https://www.readbyqxmd.com/read/28623314/comparative-transcriptomic-and-proteomic-analyses-provide-insights-into-the-key-genes-involved-in-high-altitude-adaptation-in-the-tibetan-pig
#7
Bo Zhang, Yangzom Chamba, Peng Shang, Zhixiu Wang, Jun Ma, Liyuang Wang, Hao Zhang
Tibetan pigs that inhabit the Tibetan Plateau exhibit striking phenotypic and physiological differences from lowland pigs, and have adapted well to extreme conditions. However, the mechanisms involved in regulating gene expression at high altitude in these animals are not fully understood. In this study, we obtained transcriptomic and proteomic data from the heart tissues of Tibetan and Yorkshire pigs raised in the highlands (TH and YH) and lowlands (TL and YL) via RNA-seq and iTRAQ (isobaric tags for relative and absolute quantitation) analyses, respectively...
June 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28622966/immunohistochemical-expression-analysis-of-leucine-rich-ppr-motif-containing-protein-lrpprc-a-candidate-colorectal-cancer-biomarker-identified-by-shotgun-proteomics-using-itraq
#8
Tomohisa Nishio, Nobuya Kurabe, Naoko Goto-Inoue, Toshio Nakamura, Haruhiko Sugimura, Mitsutoshi Setou, Masato Maekawa
BACKGROUND: Colorectal cancer (CRC) is the fourth most frequent cause of cancer deaths in the world. Novel biomarkers for the diagnosis, prognosis, and treatment of CRC are required to improve the clinical strategy. METHODS: We applied shotgun proteomics using isobaric tags for relative and absolute quantitation (iTRAQ) to identify novel biomarkers of CRC, and then we detected leucine-rich PPR-motif-containing protein (LRPPRC) expression in 83 normal colorectal tissues and 133 CRC tissues by immunohistochemistry...
June 13, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/28621372/molecular-dynamics-simulation-of-the-local-concentration-and-structure-in-multicomponent-aerosol-nanoparticles-under-atmospheric-conditions
#9
Katerina S Karadima, Vlasis G Mavrantzas, Spyros N Pandis
Molecular dynamics (MD) simulations were employed to investigate the local structure and local concentration in atmospheric nanoparticles consisting of an organic compound (cis-pinonic acid or n-C30H62), sulfate and ammonium ions, and water. Simulations in the isothermal-isobaric (NPT) statistical ensemble under atmospheric conditions with a prespecified number of molecules of the abovementioned compounds led to the formation of a nanoparticle. Calculations of the density profiles of all the chemical species in the nanoparticle, the corresponding radial pair distribution functions, and their mobility inside the nanoparticle revealed strong interactions developing between sulfate and ammonium ions...
June 16, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28618946/a-comparative-proteomic-analysis-of-bile-for-biomarkers-of-cholangiocarcinoma
#10
Marut Laohaviroj, Jeremy Potriquet, Xinying Jia, Sutas Suttiprapa, Yaovalux Chamgramol, Chawalit Pairojkul, Paiboon Sithithaworn, Jason Mulvenna, Banchob Sripa
Cholangiocarcinoma is a primary malignant tumor of the bile duct epithelium. Cholangiocarcinoma is usually detected at an advanced stage when successful treatment is no longer possible. As the tumor originates from the bile duct epithelium, bile is an ideal source of tumor biomarkers for cholangiocarcinoma. In this study, we used a quantitative proteomics approach to identify potential tumor-associated proteins in the bile fluid of six cholangiocarcinoma patients. Three different gross-appearance tumor types were used in the analysis: mass-forming type ( n = 2), periductal infiltrating type ( n = 2), and intraductal growth type ( n = 2)...
June 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28615669/differential-effects-of-a-post-anthesis-heat-stress-on-wheat-triticum-aestivum-l-grain-proteome-determined-by-itraq
#11
Yufeng Zhang, Jiajia Pan, Xiuwen Huang, Dandan Guo, Hongyao Lou, Zhenghong Hou, Meng Su, Rongqi Liang, Chaojie Xie, Mingshan You, Baoyun Li
Heat stress, a major abiotic stressor of wheat (Triticum aestivum L.), often results in reduced yield and decreased quality. In this study, a proteomic method, Tags for Relative and Absolute Quantitation Isobaric (iTRAQ), was adopted to analyze the protein expression profile changes among wheat cultivar Jing411 under heat stress. Results indicated that there were 256 different proteins expressed in Jing411 under heat stress. According to the result of gene annotation and functional classification, 239 proteins were annotated by 856 GO function entries, including growth and metabolism proteins, energy metabolism proteins, processing and storage proteins, defense-related proteins, signal transduction, unknown function proteins and hypothetical proteins...
June 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28613840/rapid-analysis-of-anabolic-steroid-metabolites-in-urine-by-combining-field-asymmetric-waveform-ion-mobility-spectrometry-with-liquid-chromatography-and-mass-spectrometry
#12
Kayleigh L Arthur, Matthew A Turner, Alan David Brailsford, Andrew Kicman, David A Cowan, James C Reynolds, Colin S Creaser
The combination of field asymmetric waveform ion mobility spectrometry with liquid chromatography-mass spectrometry (LC-FAIMS-MS) has been developed for the analysis of glucuronide and sulfate metabolites of seven anabolic-androgenic steroids AAS in urine. Separation by FAIMS-MS was investigated in positive ion mode for selected cationic adducts (H+, NH4+, Na+, K+, Cs+). LC-FAIMS-MS analysis of the doubly sodiated adducts ([M+2Na-H]+) of isobaric and co-eluting steroid metabolites allowed their rapid (8 min) qualitative and quantitative determination in spiked urine using hydrophilic interaction liquid chromatography prior to FAIMS-MS separation, with discrimination >95% achieved between the steroids investigated...
June 14, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28602296/comprehensive-qualification-and-quantification-of-triacylglycerols-with-specific-fatty-acid-chain-composition-in-horse-adipose-tissue-human-plasma-and-liver-tissue
#13
Ming Guan, Dongsheng Dai, Lin Li, Jinchao Wei, Hui Yang, Shilei Li, Yangyang Zhang, Yu Lin, Shaoxiang Xiong, Zhenwen Zhao
High levels of triacylglycerols (TGs) have been linked to cardiovascular disease and liver diseases. Comprehensively analyzing TGs is helpful to understand the TGs functions in these diseases. However, due to the existence of a large number of isomers TGs and the lack of commercial standards, precise analysis of individual triacylglycerol (TG) with specific fatty acid chain composition is full of challenge. In this work, ultra-performance liquid chromatography (UPLC) coupled with electrospray ionization (ESI) mass spectrometry (MS) were employed for comprehensive qualification and quantification of TGs with specific fatty acid chain composition in horse adipose tissue, human plasma and liver tissues including hepatocellular carcinoma (HCC) and para-carcinoma tissues...
September 1, 2017: Talanta
https://www.readbyqxmd.com/read/28601631/ibt-based-quantitative-proteomics-identifies-potential-regulatory-proteins-involved-in-pigmentation-of-purple-sea-cucumber-apostichopus-japonicus
#14
Lili Xing, Lina Sun, Shilin Liu, Xiaoni Li, Libin Zhang, Hongsheng Yang
Sea cucumbers are an important economic species and exhibit high yield value among aquaculture animals. Purple sea cucumbers are very rare and beautiful and have stable hereditary patterns. In this study, isobaric tags (IBT) were first used to reveal the molecular mechanism of pigmentation in the body wall of the purple sea cucumber. We analyzed the proteomes of purple sea cucumber in early pigmentation stage (Pa), mid pigmentation stage (Pb) and late pigmentation stage (Pc), resulting in the identification of 5580 proteins, including 1099 differentially expressed proteins in Pb: Pa and 339 differentially expressed proteins in Pc: Pb...
June 2, 2017: Comparative Biochemistry and Physiology. Part D, Genomics & Proteomics
https://www.readbyqxmd.com/read/28598665/study-of-%C3%AE-and-%C3%AE-photoproduction-at-mami
#15
V L Kashevarov, P Ott, S Prakhov, P Adlarson, F Afzal, Z Ahmed, C S Akondi, J R M Annand, H J Arends, R Beck, A Braghieri, W J Briscoe, F Cividini, R Codling, C Collicott, S Costanza, A Denig, E J Downie, M Dieterle, M I Ferretti Bondy, L V Fil'kov, A Fix, S Gardner, S Garni, D I Glazier, D Glowa, W Gradl, G Gurevich, D J Hamilton, D Hornidge, D Howdle, G M Huber, A Käser, S Kay, I Keshelashvili, R Kondratiev, M Korolija, B Krusche, J Linturi, V Lisin, K Livingston, I J D MacGregor, R MacRae, J Mancell, D M Manley, P P Martel, J C McGeorge, E McNicol, D G Middleton, R Miskimen, E Mornacchi, C Mullen, A Mushkarenkov, A Neiser, M Oberle, M Ostrick, P B Otte, B Oussena, D Paudyal, P Pedroni, V V Polyanski, A Rajabi, G Reicherz, J Robinson, G Rosner, T Rostomyan, A Sarty, D M Schott, S Schumann, C Sfienti, V Sokhoyan, K Spieker, O Steffen, B Strandberg, I I Strakovsky, Th Strub, I Supek, M F Taragin, A Thiel, M Thiel, L Tiator, A Thomas, M Unverzagt, S Wagner, D P Watts, D Werthmüller, J Wettig, L Witthauer, M Wolfes, R L Workman, L Zana
The reactions γp→ηp and γp→η^{'}p are measured from their thresholds up to the center-of-mass energy W=1.96  GeV with the tagged-photon facilities at the Mainz Microtron, MAMI. Differential cross sections are obtained with unprecedented statistical accuracy, providing fine energy binning and full production-angle coverage. A strong cusp is observed in the total cross section for η photoproduction at the energies in the vicinity of the η^{'} threshold, W=1896  MeV (E_{γ}=1447  MeV). Within the framework of a revised ηMAID isobar model, the cusp, in connection with a steep rise of the η^{'} total cross section from its threshold, can only be explained by a strong coupling of the poorly known N(1895)1/2^{-} state to both ηp and η^{'}p...
May 26, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28592188/polymer-coated-cardiopulmonary-bypass-circuit-attenuates-upregulation-of-both-proteases-protease-inhibitors-and-platelet-degranulation-in-pigs
#16
Shoichi Suehiro, Kouji Shimizu, Kensuke Imai, Atsushi Niii, Kazuhiro Akeho, Hayato Nakata, Akane Yamaguchi, Ken-Ichi Matsumoto, Teiji Oda
INTRODUCTION: Interaction of blood with a cardiopulmonary bypass (CPB) circuit activates the coagulation-fibrinolysis, complement and kinin-kallikrein systems that are mainly supported by proteases and their inhibitors. METHODS: Biocompatibility of a new polymer-coated (SEC-coated) CPB circuit was globally evaluated and compared with that of a non-coated CPB circuit by quantitative proteomics, using isobaric tags for relative and absolute quantification labeling tandem mass spectrometry...
June 1, 2017: Perfusion
https://www.readbyqxmd.com/read/28591565/quantitative-proteomic-analysis-of-the-fall-armyworm-saliva
#17
Flor E Acevedo, Bruce A Stanley, Anne Stanley, Michelle Peiffer, Dawn S Luthe, Gary W Felton
Lepidopteran larvae secrete saliva on plant tissues during feeding. Components in the saliva may aid in food digestion, whereas other components are recognized by plants as cues to elicit defense responses. Despite the ecological and economical importance of these plant-feeding insects, knowledge of their saliva composition is limited to a few species. In this study, we identified the salivary proteins of larvae of the fall armyworm (FAW), Spodoptera frugiperda; determined qualitative and quantitative differences in the salivary proteome of the two host races-corn and rice strains-of this insect; and identified changes in total protein concentration and relative protein abundance in the saliva of FAW larvae associated with different host plants...
June 4, 2017: Insect Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28587350/effects-of-hyperbaric-factors-on-lidocaine-induced-apoptosis-in-spinal-neurons-and-the-role-of-p38-mitogen-activated-protein-kinase-in-rats-with-diabetic-neuropathic-pain
#18
Xiaolan Zheng, Ling Chen, Xiaohong Du, Junying Cai, Shuchun Yu, Hongtao Wang, Guohai Xu, Zhenzhong Luo
The application of lidocaine can lead to nerve damage. Evidence suggests that patients with diabetic neuropathy are at a higher risk for neurotoxicity. In the present study, the successful induction of diabetic neuropathic pain (DNP) in rats via a high-sugar, high-fat diet and intraperitoneal injection of 1% streptozotocin was verified and pronounced tactile allodynia was observed. It was found that intrathecal injections of hyperbaric lidocaine produced motor blocks of longer durations in the DNP model rats than in nondiabetic rats, or in DNP model rats injected with isobaric lidocaine...
June 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28586360/comparative-proteomic-analysis-of-eggplant-solanum-melongena-l-heterostylous-pistil-development
#19
Yikui Wang, Ake Liu, Wenjia Li, Yaqing Jiang, Shiwei Song, Yan Li, Riyuan Chen
Heterostyly is a common floral polymorphism, but the proteomic basis of this trait is still largely unexplored. In this study, self- and cross-pollination of L-morph and S-morph flowers and comparison of embryo sac development in eggplant (Solanum melongena L.) suggested that lower fruit set from S-morph flowers results from stigma-pollen incompatibility. To explore the molecular mechanism underlying heterostyly development, we conducted isobaric tags for relative and absolute quantification (iTRAQ) proteomic analysis of eggplant pistils for L- and S-morph flowers...
2017: PloS One
https://www.readbyqxmd.com/read/28585411/ultra-fast-lc-ms-ms-in-therapeutic-drug-monitoring-quantification-of-clozapine-and-norclozapine-in-human-plasma
#20
Lewis Couchman, Danielle S Fisher, Krithika Subramaniam, Simon A Handley, Robert J Boughtflower, Christopher M Benton, Robert J Flanagan
A novel approach to high-throughput, targeted LC-MS/MS analysis has been developed. A single chromatographic system can be used for the analysis of a range of 20 drugs and metabolites with a total analysis time of 36 seconds (one 96-well plate of prepared samples per hour). To demonstrate the applicability of this approach to quantitative analysis, a method has been validated for the therapeutic drug monitoring of clozapine and norclozapine following automated extraction from human plasma. Chromatographic retention times were 11...
June 5, 2017: Drug Testing and Analysis
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