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https://www.readbyqxmd.com/read/28549240/dietary-salecan-reverts-partially-the-metabolic-gene-expressions-and-nmr-based-metabolomic-profiles-from-high-fat-diet-induced-obese-rats
#1
Qi Sun, Minghui Li, Xiao Yang, Xi Xu, Junsong Wang, Jianfa Zhang
Previous studies suggest that dietary salecan (a water-soluble β-glucan) effectively reduces high-fat-diet-induced adiposity through disturbing bile-acid-promoted emulsification in mice. However, the effects of salecan on metabolic genes and metabolites involved in lipid accumulation are mostly unknown. Here, we confirmed that dietary 3% and 6% salecan for 4 weeks markedly decreased fat accumulation in liver and adipose tissue in high-fat-diet rats, displaying a decrease in mRNA levels of SREBP1-C, FAS, SCD1 and ACC1 involved in de novo lipogenesis and a reduction of levels of GPAT1, DGAT1 and DGAT2 related to triglyceride synthesis...
May 5, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28549143/bile-acids-and-tryptophan-metabolism-are-novel-pathways-involved-in-metabolic-abnormalities-in-bpa-exposed-pregnant-mice-and-male-offspring
#2
Martha Susiarjo, Frances Xin, Martha Stefaniak, Clementina Mesaros, Rebecca A Simmons, Marisa S Bartolomei
Increasing evidence has demonstrated that exposure to endocrine disrupting chemicals (EDCs) impacts maternal and fetal health, but the underlying mechanisms are still unclear. We have previously shown that dietary exposure to 10 µg/kg bw/day and 10 mg/kg bw/day bisphenol A (BPA) during pregnancy induced metabolic abnormalities in F1 male offspring and gestational glucose intolerance in F0 pregnant mice. The aim of this study is to elucidate the underlying etiologies of BPA exposure-induced metabolic disease by analyzing male fetal liver metabolome...
May 25, 2017: Endocrinology
https://www.readbyqxmd.com/read/28548658/distinctive-microbiomes-and-metabolites-linked-with-weight-loss-after-gastric-bypass-but-not-gastric-banding
#3
Zehra Esra Ilhan, John K DiBaise, Nancy G Isern, David W Hoyt, Andrew K Marcus, Dae-Wook Kang, Michael D Crowell, Bruce E Rittmann, Rosa Krajmalnik-Brown
Roux-en-Y gastric bypass (RYGB) and laparoscopic adjustable gastric banding (LAGB) are anatomically different bariatric operations. RYGB achieves greater weight loss compared with LAGB. Changes in the gut microbiome have been documented after RYGB, but not LAGB, and the microbial contribution to sustainable surgical weight loss warrants further evaluation. We hypothesized that RYGB imposes greater changes on the microbiota and its metabolism than LAGB, and that the altered microbiota may contribute to greater weight loss...
May 26, 2017: ISME Journal
https://www.readbyqxmd.com/read/28548620/baicalein-exerts-beneficial-effects-in-d-galactose-induced-aging-rats-through-attenuation-of-inflammation-and-metabolic-dysfunction
#4
Dan-Dan Duan, Ke Xin Wang, Yu-Zhi Zhou, Xue-Mei Qin, Li Gao, Guan-Hua Du
Baicalein is a flavonoid isolated from the roots of Scutellaria baicalensis Georgi. This study aimed to ascertain the effects and potential underlying mechanisms of baicalein in D-galactose induced aging rat model by integration of behavior examination, biochemical detection and 1H NMR based metabolomic approach. Our findings suggest that baicalein significantly attenuated memory decline in D-galactose induced aging model, as manifested by increasing recognition index in novel object recognition test, shortening latency time and increasing platform crossings in morris water maze test...
May 26, 2017: Rejuvenation Research
https://www.readbyqxmd.com/read/28547736/rice-bran-metabolome-contains-amino-acids-vitamins-cofactors-and-phytochemicals-with-medicinal-and-nutritional-properties
#5
Iman Zarei, Dustin G Brown, Nora Jean Nealon, Elizabeth P Ryan
BACKGROUND: Rice bran is a functional food that has shown protection against major chronic diseases (e.g. obesity, diabetes, cardiovascular disease and cancer) in animals and humans, and these health effects have been associated with the presence of bioactive phytochemicals. Food metabolomics uses multiple chromatography and mass spectrometry platforms to detect and identify a diverse range of small molecules with high sensitivity and precision, and has not been completed for rice bran...
December 2017: Rice
https://www.readbyqxmd.com/read/28546994/sdha-related-tumorigenesis-a-new-case-series-and-literature-review-for-variant-interpretation-and-pathogenicity
#6
Ruth T Casey, David B Ascher, Eleanor Rattenberry, Louise Izatt, Katrina A Andrews, Helen L Simpson, Benjamen Challis, Soo-Mi Park, Venkata R Bulusu, Fiona Lalloo, Douglas E V Pires, Hannah West, Graeme R Clark, Philip S Smith, James Whitworth, Thomas G Papathomas, Phillipe Taniere, Rosina Savisaar, Laurence D Hurst, Emma R Woodward, Eamonn R Maher
PURPOSE: To evaluate the role of germline SDHA mutation analysis by (1) comprehensive literature review, (2) description of novel germline SDHA mutations and (3) in silico structural prediction analysis of missense substitutions in SDHA. PATIENTS AND METHODS: A systematic literature review and a retrospective review of the molecular and clinical features of patients identified with putative germline variants in UK molecular genetic laboratories was performed. To evaluate the molecular consequences of SDHA missense variants, a novel model of the SDHA/B/C/D complex was generated and the structural effects of missense substitutions identified in the literature, our UK novel cohort and a further 32 "control missense variants" were predicted by the mCSM computational platform...
May 2017: Molecular Genetics & Genomic Medicine
https://www.readbyqxmd.com/read/28546751/novel-urinary-metabolite-signature-for-diagnosing-postpartum-depression
#7
Lin Lin, Xiao-Mei Chen, Rong-Hua Liu
BACKGROUND: Postpartum depression (PPD) could affect ~10% of women and impair the quality of mother-infant interactions. Currently, there are no objective methods to diagnose PPD. Therefore, this study was conducted to identify potential biomarkers for diagnosing PPD. MATERIALS AND METHODS: Morning urine samples of PPD subjects, postpartum women without depression (PPWD) and healthy controls (HCs) were collected. The gas chromatography-mass spectroscopy (GC-MS)-based urinary metabolomic approach was performed to characterize the urinary metabolic profiling...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28546750/biomarkers-for-depression-recent-insights-current-challenges-and-future-prospects
#8
REVIEW
Rebecca Strawbridge, Allan H Young, Anthony J Cleare
A plethora of research has implicated hundreds of putative biomarkers for depression, but has not yet fully elucidated their roles in depressive illness or established what is abnormal in which patients and how biologic information can be used to enhance diagnosis, treatment and prognosis. This lack of progress is partially due to the nature and heterogeneity of depression, in conjunction with methodological heterogeneity within the research literature and the large array of biomarkers with potential, the expression of which often varies according to many factors...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28546635/local-cryotherapy-minimally-impacts-the-metabolome-and-transcriptome-of-human-skeletal-muscle
#9
Dylan C Sarver, Kristoffer B Sugg, Nathaniel P Disser, Elizabeth R Sibilsky Enselman, Tariq M Awan, Christopher L Mendias
Cryotherapy is commonly used in the treatment of skeletal muscle injuries. However, the data to support the use of cryotherapy is inconclusive, and the biochemical etiology of cryotherapy in human skeletal muscle remains largely unknown. We therefore sought to determine how a clinically-relevant dose of cryotherapy would impact the transcriptome and metabolome of skeletal muscle. Eight healthy male subjects (age 24.7 ± 4.5 years, BMI 22.2 ± 1.6) received a 15 minute bout of local cryotherapy, delivered via ice cup massage over the anterolateral thigh...
May 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28546543/metabolic-profiling-of-polycystic-ovary-syndrome-reveals-interactions-with-abdominal-obesity
#10
Alexessander Couto Alves, Beatriz Valcarcel, Ville-Petteri Mäkinen, Laure Morin-Papunen, Sylvain Sebert, Antti J Kangas, Pasi Soininen, Shikta Das, Maria De Iorio, Lachlan Coin, Mika Ala-Korpela, Marjo-Riitta Järvelin, Stephen Franks
BACKGROUND: Polycystic ovary syndrome (PCOS) is a common reproductive disorder associated with metabolic disturbances including obesity, insulin resistance, and diabetes mellitus. Here we investigate whether changes in the metabolic profile of PCOS women are driven by increased tendency to obesity or are specific features of PCOS related to increased testosterone levels. DESIGN AND METHODS: We conducted an NMR metabolomics association study of PCOS cases (n=145) and controls (n=687) nested in a population-based birth cohort (n=3,127)...
May 26, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28546536/a-sensitive-mass-spectrometry-platform-identifies-metabolic-changes-of-life-history-traits-in-c-elegans
#11
Arwen W Gao, Iliana A Chatzispyrou, Rashmi Kamble, Yasmine J Liu, Katharina Herzog, Reuben L Smith, Henk van Lenthe, Martin A T Vervaart, Arno van Cruchten, Angela C Luyf, Antoine van Kampen, Mia L Pras-Raves, Frédéric M Vaz, Riekelt H Houtkooper
Abnormal nutrient metabolism is a hallmark of aging, and the underlying genetic and nutritional framework is rapidly being uncovered, particularly using C. elegans as a model. However, the direct metabolic consequences of perturbations in life history of C. elegans remain to be clarified. Based on recent advances in the metabolomics field, we optimized and validated a sensitive mass spectrometry (MS) platform for identification of major metabolite classes in worms and applied it to study age and diet related changes...
May 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28546118/alterations-in-metabolic-pathways-in-stomach-of-mice-infected-with-helicobacter-pylori
#12
Shin Nishiumi, Masaru Yoshida, Takeshi Azuma
Numerous studies of Helicobacter pylori (H. pylori) have been performed, but few studies have evaluated the effects of H. pylori infections using metabolome analysis, which involves the comprehensive study of low molecular weight metabolites. In this study, the metabolites in the stomach tissue of mice that had been infected with H. pylori SS1 for 1, 3, or 6 months were analyzed, and then evaluations of various metabolic pathways were performed to gain novel understandings of H. pylori infections. As a result, it was found that the glycolytic pathway, the tricarboxylic acid cycle, and the choline pathway tended to be upregulated at 1 month after the H...
May 22, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28545435/urinary-metabolomics-study-on-the-protective-role-of-orthosiphon-stamineus-in-streptozotocin-induced-diabetes-mellitus-in-rats-via-1-h-nmr-spectroscopy
#13
Amalina Ahmad Azam, Raghunath Pariyani, Intan Safinar Ismail, Amin Ismail, Alfi Khatib, Faridah Abas, Khozirah Shaari
BACKGROUND: Orthosiphon stamineus (OS) is a herb known in ethnomedicine for treating diabetes mellitus (DM). In this study, a (1)H NMR based urine metabolomics tool has been used for the first time to identify the metabolic protective mechanism of OS in DM using Streptozotocin (STZ) induced experimental model in rats. METHODS: Four different solvent extracts of OS, namely aqueous, ethanolic, 50% aqueous ethanolic and methanolic, at a dose of 500 mg/kg body weight (bw) were orally administered for 14 days to diabetic rats induced via intraperitoneal injection of 60 mg/kg bw STZ...
May 25, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28545104/pkng-senses-amino-acid-availability-to-control-metabolism-and-virulence-of-mycobacterium-tuberculosis
#14
Barbara Rieck, Giulia Degiacomi, Michael Zimmermann, Alessandro Cascioferro, Francesca Boldrin, Natalie R Lazar-Adler, Andrew R Bottrill, Fabien le Chevalier, Wafa Frigui, Marco Bellinzoni, María-Natalia Lisa, Pedro M Alzari, Liem Nguyen, Roland Brosch, Uwe Sauer, Riccardo Manganelli, Helen M O'Hare
Sensing and response to changes in nutrient availability are essential for the lifestyle of environmental and pathogenic bacteria. Serine/threonine protein kinase G (PknG) is required for virulence of the human pathogen Mycobacterium tuberculosis, and its putative substrate GarA regulates the tricarboxylic acid cycle in M. tuberculosis and other Actinobacteria by protein-protein binding. We sought to understand the stimuli that lead to phosphorylation of GarA, and the roles of this regulatory system in pathogenic and non-pathogenic bacteria...
May 17, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28544938/sex-steroids-and-metabolic-responses-in-mussels-mytilus-galloprovincialis-exposed-to-drospirenone
#15
Tiziana Cappello, Denise Fernandes, Maria Maisano, Andrea Casano, Marta Bonastre, Maria João Bebianno, Angela Mauceri, Salvatore Fasulo, Cinta Porte
Drospirenone (DRO) is a synthetic progestin derived from 17α-spironolactone with a pharmacological mechanism of action similar to progesterone. Despite its wide use as pharmaceutical and consequent continuous release into the aquatic environment, DRO effects have been poorly investigated on aquatic biota. In order to unravel the toxicity mechanisms of DRO, mussels Mytilus galloprovincialis were exposed for 7 days to different concentrations of DRO, namely 20ng/L (Low; L), 200ng/L (Medium; M), 2000ng/L (High; H) and 10μg/L (Super High; SH) nominal doses...
May 22, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28544881/mammalian-systems-biotechnology-reveals-global-cellular-adaptations-in-a-recombinant-cho-cell-line
#16
Faraaz Noor Khan Yusufi, Meiyappan Lakshmanan, Ying Swan Ho, Bernard Liat Wen Loo, Pramila Ariyaratne, Yuansheng Yang, Say Kong Ng, Tessa Rui Min Tan, Hock Chuan Yeo, Hsueh Lee Lim, Sze Wai Ng, Ai Ping Hiu, Chung Ping Chow, Corrine Wan, Shuwen Chen, Gavin Teo, Gao Song, Ju Xin Chin, Xiaoan Ruan, Ken Wing Kin Sung, Wei-Shou Hu, Miranda Gek Sim Yap, Muriel Bardor, Niranjan Nagarajan, Dong-Yup Lee
Effective development of host cells for therapeutic protein production is hampered by the poor characterization of cellular transfection. Here, we employed a multi-omics-based systems biotechnology approach to elucidate the genotypic and phenotypic differences between a wild-type and recombinant antibody-producing Chinese hamster ovary (CHO) cell line. At the genomic level, we observed extensive rearrangements in specific targeted loci linked to transgene integration sites. Transcriptional re-wiring of DNA damage repair and cellular metabolism in the antibody producer, via changes in gene copy numbers, was also detected...
May 24, 2017: Cell Systems
https://www.readbyqxmd.com/read/28544603/metabolic-reprogramming-of-macrophages-exposed-to-silk-poly-lactic-co-glycolic-acid-and-silica-nanoparticles
#17
Raquel Saborano, Thidarat Wongpinyochit, John D Totten, Blair F Johnston, F Philipp Seib, Iola F Duarte
Monitoring macrophage metabolism in response to nanoparticle exposure provides new insights into biological outcomes, such as inflammation or toxicity, and supports the design of tailored nanomedicines. This paper describes the metabolic signature of macrophages exposed to nanoparticles ranging in diameter from 100 to 125 nm and made from silk, poly(lactic-co-glycolic acid) or silica. Nanoparticles of this size and type are currently at various stages of preclinical and clinical development for drug delivery applications...
May 8, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28544323/mass-spectrometric-evidence-for-the-modification-of-small-molecules-in-a-cobalt-60-irradiated-rodent-diet
#18
J K Prasain, L S Wilson, A Arabshahi, C Grubbs, S Barnes
The purpose of this study was to investigate the effect of radiation on the content of animal diet constituents using global metabolomics. Aqueous methanolic extracts of control and cobalt-60 irradiated NIH 7001 diets were comprehensively analyzed using nanoLC-MS/MS. Among the over two thousand ions revealed by XCMS followed by data preprocessing, 94 positive and 143 negative metabolite ions had greater than 1.5 fold changes and p-values <0.01. Use of Metaboanalyst statistical software demonstrated complete separation of the irradiated and non-radiated diets in unsupervised principal components analysis and supervised partial least squares discriminant analysis...
May 24, 2017: Journal of Mass Spectrometry: JMS
https://www.readbyqxmd.com/read/28544148/structure-and-biosynthesis-of-crocagins-polycyclic-postranslationally-modified-ribosomal-peptides-from-chondromyces-crocatus
#19
Konrad Viehrig, Frank Surup, Carsten Volz, Jennifer Herrmann, Antoine Abou Fayad, Sebastian Adam, Jesko Köhnke, Dirk Trauner, Rolf Müller
Secondary metabolome mining efforts in the myxobacterial multiproducer of natural products, Chondromyces crocatus Cm c5, resulted in the isolation and structure elucidation of crocagins, which are novel polycyclic peptides containing a tetrahydropyrrolo[2,3-b]indole core. The gene cluster was identified through an approach combining genome analysis, targeted gene inactivation in the producer, and in vitro experiments. Based on our findings, we developed a biosynthetic scheme for crocagin biosynthesis. These natural products are formed from the three C-terminal amino acids of a precursor peptide and thus belong to a novel class of ribosomally synthesized and post-translationally modified peptides (RiPPs)...
May 23, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28544073/hydrophilic-interaction-and-reversed-phase-ultra-performance-liquid-chromatography-tof-ms-for-metabolomic-analysis-of-veratrum-nigrum-induced-cardiotoxicity
#20
Ziheng Wei, Xu Dong, Hanzhe Zhang, Songyan Gao, Wei Shi, Feng Yang, Xin Dong
The acute cardiotoxicity induced by Veratrum nigrum (VN) is explored by analysing heart tissue metabolic profiles in mouse models and applying reversed-phase liquid chromatography mass spectrometry (RPLC-MS) and hydrophilic interaction liquid chromatography mass spectrometry (HILIC-MS) that are based on ultra-high performance liquid chromatography quadrupole time-of-flight mass spectrometry (UPLC-QTOF-MS). An animal model of acute heart injury was established in mice via intra-gastric administration of VN. Then, electrocardiogram, echocardiograph monitoring of cardiac function and pathological examination were performed on mice both in the control and VN groups, and it was successfully verified that acute heart injury was caused...
May 22, 2017: Biomedical Chromatography: BMC
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