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https://www.readbyqxmd.com/read/28724254/effects-of-calcium-on-the-performance-bacterial-population-and-microbial-metabolism-of-a-denitrifying-phosphorus-removal-system
#1
Hongliang Dai, Yifeng Wu, Lihong Peng, Zheqin Dai, Xiang Li, Xiwu Lu
A sequencing batch reactor was operated to study the effects of influent Ca(2+) on the efficiency, bacterial population, and microbial metabolism of denitrifying phosphorus removal system. Results showed that high Ca(2+) loading (≥80mg/L) significantly inhibited the performance of simultaneous nitrogen and phosphorus removal. The abundance of phosphorus removal-related organisms (Dechloromonas and Candidatus Accumulibacter) decreased with increasing Ca(2+) concentration from 20 to 140mg/L, while the abundance of glycogen-accumulating organisms and other bacteria increased...
July 8, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28724197/discrimination-and-characterization-of-two-mediterranean-species-from-the-laurencia-complex-rhodomelacea-using-an-nmr-based-metabolomic-approach
#2
Sylvain Sutour, Hélène Esselin, Ange Bighelli, Joseph Casanova, Line Le Gall, Félix Tomi
Generic and specific determination among the Laurencia complex is a challenging task. DNA barcoding combined with phenotypic investigations are mandatory for species differentiation. In this study, two morphologically different members of the Laurencia complex were investigated using untargeted (1) H NMR-based metabolomics. Twenty-one population samples were collected in order to evaluate both temporal and geographical homogeneity. Data obtained from (1) H NMR analysis followed by statistical analysis allowed a clear separation of all the samples into two groups...
July 19, 2017: Chemistry & Biodiversity
https://www.readbyqxmd.com/read/28723573/proteomic-and-metabolomic-characterization-of-a-mammalian-cellular-transition-from-quiescence-to-proliferation
#3
Ho-Joon Lee, Mark P Jedrychowski, Arunachalam Vinayagam, Ning Wu, Ng Shyh-Chang, Yanhui Hu, Chua Min-Wen, Jodene K Moore, John M Asara, Costas A Lyssiotis, Norbert Perrimon, Steven P Gygi, Lewis C Cantley, Marc W Kirschner
There exist similarities and differences in metabolism and physiology between normal proliferative cells and tumor cells. Once a cell enters the cell cycle, metabolic machinery is engaged to facilitate various processes. The kinetics and regulation of these metabolic changes have not been properly evaluated. To correlate the orchestration of these processes with the cell cycle, we analyzed the transition from quiescence to proliferation of a non-malignant murine pro-B lymphocyte cell line in response to IL-3...
July 18, 2017: Cell Reports
https://www.readbyqxmd.com/read/28722670/follicular-metabolic-changes-and-effects-on-oocyte-quality-in-polycystic-ovary-syndrome-patients
#4
Yan Zhang, Lingyan Liu, Tai-Lang Yin, Jing Yang, Cheng-Liang Xiong
Polycystic ovary syndrome (PCOS) is a common complex and heterogeneous disorder, affecting up to 10% women at reproductive age. It causes three fourth of the ovulatory infertility and PCOS patients often give poor IVF quality. Although some metabolic profiles have been investigated in PCOS patient sera and urine, the follicular fluid, providing fruitful biochemical information about oocyte environment during development has been ignored. In this work, based on NMR metabolomics approach, metabolic profile of follicular fluid of PCOS patients has been explored and compared with healthy controls...
July 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/28722422/first-time-view-on-human-metabolome-changes-after-a-single-intake-of-3-4-methylenedioxymethamphetamine-mdma-in-healthy-placebo-controlled-subjects
#5
Martina I Boxler, Matthias E Liechti, Yasmin Schmid, Thomas Kraemer, Andrea E Steuer
3,4-methylenedioxymethamphetamine (MDMA; 'ecstasy') is widely consumed recreationally. Currently little is known about its effects on the human metabolome. Mapping biochemical changes after drug exposure can complement traditional approaches by revealing potential biomarkers of organ toxicity or discovering new metabolomic features in a time- and dose-dependent manner. We aimed to analyze for the first time plasma samples from a randomized, double-blind, placebo-controlled crossover study in healthy adults to explore changes in endogenous plasma metabolites following a single intake of MDMA...
July 19, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28722418/urine-metabonomics-reveals-early-biomarkers-in-diabetic-cognitive-dysfunction
#6
Lili Song, Pengwei Zhuang, Mengya Lin, Mingqin Kang, Hongyue Liu, Yuping Zhang, Zhen Yang, Yunlong Chen, Yanjun Zhang
Recently, increasing attention has been paid to diabetic encephalopathy which is one of frequent diabetic complications and affects nearly 30% diabetics. Since cognitive dysfunction from diabetic encephalopathy might develop irreversible dementia, early diagnosis and detection of this disease is of great significance for its prevention and treatment. This study is to investigate the early specific metabolites biomarkers in the urine prior to the onset of diabetic cognitive dysfunction (DCD) by using metabolomics technology...
July 19, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28722260/effect-of-long-distance-transportation-on-serum-metabolic-profiles-of-steer-calves
#7
Satoshi Takemoto, Shozo Tomonaga, Masayuki Funaba, Tohru Matsui
Long-distance transportation is sometimes inevitable in the beef industry because of the geographic separation of major breeding and fattening areas. Long-distance transportation negatively impacts production and health of cattle, which may, at least partly, result from the disturbance of metabolism during and after transportation. However, alteration of metabolism remains elusive in transported cattle. We investigated the effects of transportation on the metabolomic profiles of Holstein steer calves. Non-targeted analysis of serum concentrations of low molecular weight metabolites was performed by gas chromatography mass spectrometry...
July 19, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/28720669/muc1-mediated-metabolic-alterations-regulate-response-to-radiotherapy-in-pancreatic-cancer
#8
Venugopal Gunda, Joshua J Souchek, Jaime Abrego, Surendra K Shukla, Gennifer D Goode, Enza Vernucci, Aneesha Dasgupta, Nina CHaika, Ryan J King, Sicong Li, Shuo Wang, Fang Yu, Tadayoshi Bessho, Chi Lin, Pankaj K Singh
Purpose: MUC1, an oncogene overexpressed in multiple solid tumors including pancreatic cancer, reduces overall survival and imparts resistance to radiation and chemotherapies. We previously identified that MUC1 facilitates growth promoting metabolic alterations in pancreatic cancer cells. The present study investigates the role of MUC1-mediated metabolism in radiation resistance of pancreatic cancer by utilizing cell lines and in vivo models. <p>Experimental design: We used MUC1 knockdown and overexpressed cell line models for evaluating the role of MUC1-mediated metabolism in radiation resistance through in vitro cytotoxicity, clonogenicity, DNA damage response and metabolomic evaluations...
July 18, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28720588/ews-fli-is-a-master-regulator-of-metabolic-reprogramming-in-ewing-sarcoma
#9
Jason M Tanner, Claire Bensard, Peng Wei, Nathan M Krah, John C Schell, Jamie D Gardiner, Joshua D Schiffman, Stephen L Lessnick, Jared Rutter
Ewing sarcoma is a bone malignancy driven by a translocation event resulting in the fusion protein EWS/FLI1 (EF). EF functions as an aberrant and oncogenic transcription factor that misregulates the expression of thousands of genes. Previous work has focused principally on determining important transcriptional targets of EF, as well as characterizing important regulatory partnerships in EF-dependent transcriptional programs. Less is known, however, about EF-dependent metabolic changes or their role in Ewing sarcoma biology...
July 18, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28720279/metabolomic-analysis-identifies-altered-metabolic-pathways-in-multiple-sclerosis
#10
Simone Poddighe, Federica Murgia, Lorena Lorefice, Sonia Liggi, Eleonora Cocco, Maria Giovanna Marrosu, Luigi Atzori
Multiple sclerosis (MS) is a chronic, demyelinating disease that affects the central nervous system and is characterized by a complex pathogenesis and difficult management. The identification of new biomarkers would be clinically useful for more accurate diagnoses and disease monitoring. Metabolomics, the identification of small endogenous molecules in, offers an instantaneous molecular snapshot of the MS phenotype. Here the metabolomic profiles (utilizing plasma from patients with MS) were characterized with a Gas cromatography-mass spectrometry-based platform followed by a multivariate statistical analysis and comparison with a healthy control (HC) population...
July 15, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/28720150/metabotyping-and-its-application-in-targeted-nutrition-an-overview
#11
Anna Riedl, Christian Gieger, Hans Hauner, Hannelore Daniel, Jakob Linseisen
Metabolic diversity leads to differences in nutrient requirements and responses to diet and medication between individuals. Using the concept of metabotyping - that is, grouping metabolically similar individuals - tailored and more efficient recommendations may be achieved. The aim of this study was to review the current literature on metabotyping and to explore its potential for better targeted dietary intervention in subjects with and without metabolic diseases. A comprehensive literature search was performed in PubMed, Google and Google Scholar to find relevant articles on metabotyping in humans including healthy individuals, population-based samples and patients with chronic metabolic diseases...
July 19, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28720125/profiling-of-the-perturbed-metabolomic-state-of-mouse-spleen-during-acute-and-chronic-toxoplasmosis
#12
Xiao-Qing Chen, Chun-Xue Zhou, Hany M Elsheikha, Shuai He, Gui-Xue Hu, Xing-Quan Zhu
BACKGROUND: Toxoplasma gondii, a common opportunistic protozoan, is a leading cause of illness and mortality among immunosuppressed individuals and during congenital infections. Current therapeutic strategies for toxoplasmosis are not fully effective at curtailing disease progression in these cases. Given the parasite ability to influence host immunity and metabolism, understanding of the metabolic alterations in the host's immune organs during T. gondii infection may enhance the understanding of the molecular mechanisms that define the pathophysiology of T...
July 18, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28719620/endurance-performance-and-energy-metabolism-during-exercise-in-mice-with-a-muscle-specific-defect-in-the-control-of-branched-chain-amino-acid-catabolism
#13
Minjun Xu, Yasuyuki Kitaura, Takuya Ishikawa, Yoshihiro Kadota, Chihaya Terai, Daichi Shindo, Takashi Morioka, Miki Ota, Yukako Morishita, Kengo Ishihara, Yoshiharu Shimomura
It is known that the catabolism of branched-chain amino acids (BCAAs) in skeletal muscle is suppressed under normal and sedentary conditions but is promoted by exercise. BCAA catabolism in muscle tissues is regulated by the branched-chain α-keto acid (BCKA) dehydrogenase complex, which is inactivated by phosphorylation by BCKA dehydrogenase kinase (BDK). In the present study, we used muscle-specific BDK deficient mice (BDK-mKO mice) to examine the effect of uncontrolled BCAA catabolism on endurance exercise performance and skeletal muscle energy metabolism...
2017: PloS One
https://www.readbyqxmd.com/read/28718399/certified-reference-material-for-use-in-1-h-31-p-and-19-f-quantitative-nmr-ensuring-traceability-to-the-international-system-of-units
#14
Romana Rigger, Alexander Rück, Christine Hellriegel, Robert Sauermoser, Fabienne Morf, Kathrin Breitruck, Markus Obkircher
In recent years, quantitative NMR (qNMR) spectroscopy has become one of the most important tools for content determination of organic substances and quantitative evaluation of impurities. Using Certified Reference Materials (CRMs) as internal or external standards, the extensively used qNMR method can be applied for purity determination, including unbroken traceability to the International System of Units (SI). The implementation of qNMR toward new application fields, e.g., metabolomics, environmental analysis, and physiological pathway studies, brings along more complex molecules and systems, thus making use of (1)H qNMR challenging...
July 18, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28717206/an-amino-acid-signature-associated-with-obesity-predicts-2-year-risk-of-hypertriglyceridemia-in-school-age-children
#15
Sofia Moran-Ramos, Elvira Ocampo-Medina, Ruth Gutierrez-Aguilar, Luis Macías-Kauffer, Hugo Villamil-Ramírez, Blanca E López-Contreras, Paola León-Mimila, Joel Vega-Badillo, Roxana Gutierrez-Vidal, Ricardo Villarruel-Vazquez, Erandi Serrano-Carbajal, Blanca E Del-Río-Navarro, Adriana Huertas-Vázquez, Teresa Villarreal-Molina, Isabel Ibarra-Gonzalez, Marcela Vela-Amieva, Carlos A Aguilar-Salinas, Samuel Canizales-Quinteros
Childhood obesity is associated with a number of metabolic abnormalities leading to increased cardiovascular risk. Metabolites can be useful as early biomarkers and new targets to promote early intervention beginning in school age. Thus, we aimed to identify metabolomic profiles associated with obesity and obesity-related metabolic traits. We used data from the Obesity Research Study for Mexican children (ORSMEC) in Mexico City and included a case control (n = 1120), cross-sectional (n = 554) and a longitudinal study (n = 301) of 6-12-year-old children...
July 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28717103/metabolomics-of-an-in-vitro-liver-model-containing-primary-hepatocytes-assembling-around-an-endothelial-cell-network-comparative-study-on-the-metabolic-stability-and-the-effect-of-acetaminophen-treatment
#16
Yu Toyoda, Kasumi Kashikura, Tomoyoshi Soga, Yoh-Ichi Tagawa
Recently, a novel culture system consisting of primary hepatocytes structured over a network of endothelial cells on the Engelbreth-Holm-Swarm (EHS) gel has been reported. This in vitro liver model on the EHS gel (IVLEHS) has been shown to maintain the expression of hepatic genes and their functional activity. Moreover, the IVLEHS was more sensitive to xenobiotics than hepatocyte monocultures, suggesting the potential utility of this culture system for compound hepatotoxicity screening. However, the effect of this three-dimensional structure formation on the cellular metabolic profile of hepatocytes in the IVLEHS is not well understood...
2017: Journal of Toxicological Sciences
https://www.readbyqxmd.com/read/28717097/plasma-2-hydroxyglutarate-and-hexanoylcarnitine-levels-are-potential-biomarkers-for-skeletal-muscle-toxicity-in-male-fischer-344-rats
#17
Hisakuni Obayashi, Naoko Kobayashi, Yoshikazu Nezu, Takashi Yamoto, Mitsuyuki Shirai, Fumitoshi Asai
To identify new candidate biomarkers for skeletal muscle toxicity, an unbiased metabolomic analysis was performed in rats treated with two distinct myotoxicants, cerivastatin (CER) and tetramethyl-p-phenylenediamine (TMPD). Skeletal muscle toxicity was induced in male Fischer 344 rats by administering CER or TMPD and monitored using established endpoints, such as increased plasma creatine kinase (CK) activity and histopathology, and a metabolomic analysis of skeletal muscle and plasma samples. Plasma CK levels in CER-treated rats were markedly elevated at Day 11; however, those in TMPD-treated rats showed a statistically significant decrease at 24 hr after dosing...
2017: Journal of Toxicological Sciences
https://www.readbyqxmd.com/read/28717014/investigating-mixotrophic-metabolism-in-the-model-diatom-phaeodactylum-tricornutum
#18
Valeria Villanova, Antonio Emidio Fortunato, Dipali Singh, Davide Dal Bo, Melissa Conte, Toshihiro Obata, Juliette Jouhet, Alisdair R Fernie, Eric Marechal, Angela Falciatore, Julien Pagliardini, Adeline Le Monnier, Mark Poolman, Gilles Curien, Dimitris Petroutsos, Giovanni Finazzi
Diatoms are prominent marine microalgae, interesting not only from an ecological point of view, but also for their possible use in biotechnology applications. They can be cultivated in phototrophic conditions, using sunlight as the sole energy source. Some diatoms, however, can also grow in a mixotrophic mode, wherein both light and external reduced carbon contribute to biomass accumulation. In this study, we investigated the consequences of mixotrophy on the growth and metabolism of the pennate diatom Phaeodactylum tricornutum, using glycerol as the source of reduced carbon...
September 5, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28715745/a-practical-protocol-for-comprehensive-evaluation-of-sulfur-fumigation-of-gastrodia-rhizoma-using-metabolome-and-health-risk-assessment-analysis
#19
Chuanzhi Kang, Chang-Jiang-Sheng Lai, Dan Zhao, Tao Zhou, Da-Hui Liu, Chaogeng Lv, Sheng Wang, Liping Kang, Jian Yang, Zhi-Lai Zhan, Lu-Qi Huang, Lanping Guo
Gastrodia Rhizoma is one of the most heavily sulfur-fumigated edible and medical herbs in the marketplace. We developed a practical protocol using an ultra-performance liquid chromatography coupled with quadrupole time-of-flight-MS(E) (UPLC/QTOF-MS(E))-based metabolome and health risk assessment model to identify characteristic sulfur-fumigated markers, dissect chemical transformation mechanisms, and control the quality of sulfur-fumigated Gastrodia Rhizoma. Two sulfur-containing p-hydroxybenzyl products, one sulfur-containing disaccharide, one glycolipid, and two phospholipids were selected and identified as markers based on multivariate statistical analysis...
July 4, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28715731/metabolomics-analysis-reveals-that-benzo-a-pyrene-a-component-of-pm2-5-promotes-pulmonary-injury-by-modifying-lipid-metabolism-in-a-phospholipase-a2-dependent-manner-in-vivo-and-in-vitro
#20
Song-Yang Zhang, Danqing Shao, Huiying Liu, Juan Feng, Baihuan Feng, Xiaoming Song, Qian Zhao, Ming Chu, Changtao Jiang, Wei Huang, Xian Wang
Particulate matter with an aerodynamic diameter less than 2.5μM (PM2.5) is one of the major environmental pollutants in China. In this study, we carried out a metabolomics profile study on PM2.5-induced inflammation. PM2.5 from Beijing, China, was collected and given to rats through intra-tracheal instillation in vivo. Acute pulmonary injury were observed by pulmonary function assessment and H.E. staining. The lipid metabolic profile was also altered with increased phospholipid and sphingolipid metabolites in broncho-alveolar lavage fluid (BALF) after PM2...
July 4, 2017: Redox Biology
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