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https://www.readbyqxmd.com/read/28433638/metabolomic-analysis-for-combined-hepatotoxicity-of-chlorpyrifos-and-cadmium-in-rats
#1
Ming-Yuan Xu, Pan Wang, Ying-Jian Sun, Yi-Jun Wu
Pesticides and heavy metals are widespread environmental pollutants. Although the acute toxicity of organophosphorus pesticide chlorpyrifos (CPF) and toxic heavy metal cadmium (Cd) is well characterized, the combined toxicity of CPF and Cd, especially the hepatotoxicity of the two chemicals with long-term exposure at a low dose, remained unclear. In this study, we investigated the toxicity in the liver of rats upon subchronic exposure to CPF and Cd at environmentally relevant doses. Rats were given three different doses (1/135 LD50, 1/45 LD50 and 1/15 LD50) of CPF and Cd as well as their mixtures by oral gavage for 90 days...
April 19, 2017: Toxicology
https://www.readbyqxmd.com/read/28432768/the-fate-of-recently-fixed-carbon-after-drought-release-towards-unravelling-c-storage-regulation-in-tilia-platyphyllos-and-pinus-sylvestris
#2
Lucía Galiano Pérez, Galina Timofeeva, Matthias Saurer, Rolf Siegwolf, Jordi Martínez-Vilalta, Robert Hommel, Arthur Gessler
Carbon reserves are important for maintaining tree function during and after stress. Increasing tree mortality driven by drought globally has renewed the interest in how plants regulate allocation of recently fixed C to reserve formation. Three year-old seedlings of two species (Tilia platyphyllos, Pinus sylvestris) were exposed to two intensities of experimental drought during ~ 10 weeks and (13) C pulse labelling was subsequently applied with rewetting. Tracking the (13) C-label across different organs and C compounds (soluble sugars, starch, myo-inositol, lipids and cellulose), together with the monitoring of gas exchange and C mass balances over time, allowed for the identification of variations in C allocation priorities and tree C balances that are associated to drought effects and subsequent drought release...
April 22, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28431560/a-new-generation-of-bacillus-subtilis-cell-factory-for-further-elevated-scyllo-inositol-production
#3
Kosei Tanaka, Ayane Natsume, Shu Ishikawa, Shinji Takenaka, Ken-Ichi Yoshida
BACKGROUND: A stereoisomer of inositol, scyllo-inositol (SI), has been regarded as a promising therapeutic agent for Alzheimer's disease. However, this compound is relatively rare, whereas another stereoisomer of inositol, myo-inositol (MI) is abundant in nature. Bacillus subtilis 168 has the ability to metabolize inositol stereoisomers, including MI and SI. Previously, we reported a B. subtilis cell factory with modified inositol metabolism that converts MI into SI in the culture medium...
April 21, 2017: Microbial Cell Factories
https://www.readbyqxmd.com/read/28414734/micrornas-as-reference-genes-for-quantitative-pcr-in-cotton
#4
Anna Karoline Silva Fausto, Tatiane da Franca Silva, Elisson Romanel, Maite F S Vaslin
Cotton (Gossypium hirsutum) is the most important non-food plant in the world. Studies concerning the fiber quality and plant fitness of cotton at molecular level depend on high sensitive and reproducible gene-expression assays. However, only a few reports have described genes suitable for normalizing gene expression data. In this study, we report for the first time that microRNAs (miRNAs) are reliable reference genes (RGs) for cotton gene expression normalization in quantitative real-time reverse transcription (RT)-PCR...
2017: PloS One
https://www.readbyqxmd.com/read/28409846/an-in-vitro-synthetic-biology-platform-for-the-industrial-biomanufacturing-of-myo-inositol-from-starch
#5
Chun You, Ting Shi, Yunjie Li, Pingping Han, Xigui Zhou, Yi-Heng Percival Zhang
myo-Inositol (vitamin B8) is widely used in the drug, cosmetic, and food & feed industries. Here we present an in vitro non-fermentative enzymatic pathway that converts starch to inositol in one vessel. This in vitro pathway is comprised of four enzymes that operate without ATP or NAD(+) supplementation. All enzyme BioBricks are carefully selected from hyperthermophilic microorganisms, that is, alpha-glucan phosphorylase from Thermotoga maritima, phosphoglucomutase from Thermococcus kodakarensis, inositol 1-phosphate synthase from Archaeoglobus fulgidus, and Inositol monophosphatase from T...
April 14, 2017: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/28406517/biochemical-studies-of-inositol-n-acetylglucosaminyltransferase-involved-in-mycothiol-biosynthesis-in-corynebacterium-diphtheria
#6
Yuchuan Guo, Lizhen Wang, Jiatong Guo, Guofeng Gu, Zhongwu Guo
Mycothiol (MSH) is the predominant low molecular weight thiol produced by actinomycetes, and it plays a pivotal role in the bacterial detoxication process. 1L-myo-Inositol-1-phosphate (1L-Ins-1-P) α-N-acetylglucosaminyltransferase (GlcNAc-T), known as MshA, is the only glycosyltransferase involved in MSH biosynthesis. In this work, the MshA from Corynebacterium diphtheria, named as CdMshA, was expressed, purified, and studied in detail. Its enzymatic activity to transfer GlcNAc to 1L-Ins-1-P was confirmed by the isolation and rigorous characterization of its reaction product 3-phospho-1-d-myo-inositol-2-acetamido-2-deoxy-α-d-glucopyranoside...
April 13, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/28390155/employing-binol-phosphoroselenoyl-chloride-for-selective-inositol-phosphorylation-and-chemical-synthesis-of-glycosyl-inositol-phospholipid-from-entamoeba-histolytica
#7
Toshihiko Aiba, Sae Suehara, Siew-Ling Choy, Yuuki Maekawa, Hannelore Lotter, Toshiaki Murai, Shinsuke Inuki, Koichi Fukase, Yukari Fujimoto
Here we describe the chemical synthesis of glycosyl inositol phospholipids from Entamoeba histolytica. The key feature of this synthesis is a regioselective phosphorylation reaction that occurs via desymmetrization of a myo-inositol derivative with phosphoroselenoyl chloride. We also developed a new protecting group strategy that utilizes allyl and alloc groups to synthesize complex glycolipids bearing unsaturated lipids. These developments provided an efficient synthetic route for various complex inositol phospholipids and their analogues...
April 8, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28382021/an-endohyphal-bacterium-chitinophaga-bacteroidetes-alters-carbon-source-use-by-fusarium-keratoplasticum-f-solani-species-complex-nectriaceae
#8
Justin P Shaffer, Jana M U'Ren, Rachel E Gallery, David A Baltrus, A Elizabeth Arnold
Bacterial endosymbionts occur in diverse fungi, including members of many lineages of Ascomycota that inhabit living plants. These endosymbiotic bacteria (endohyphal bacteria, EHB) often can be removed from living fungi by antibiotic treatment, providing an opportunity to assess their effects on functional traits of their fungal hosts. We examined the effects of an endohyphal bacterium (Chitinophaga sp., Bacteroidetes) on substrate use by its host, a seed-associated strain of the fungus Fusarium keratoplasticum, by comparing growth between naturally infected and cured fungal strains across 95 carbon sources with a Biolog® phenotypic microarray...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28379256/site-selective-benzoin-type-cyclization-of-unsymmetrical-dialdoses-catalyzed-by-n-heterocyclic-carbenes-for-divergent-cyclitol-synthesis
#9
Bubwoong Kang, Yinli Wang, Satoru Kuwano, Yousuke Yamaoka, Kiyosei Takasu, Ken-Ichi Yamada
A highly site-selective N-heterocyclic carbene (NHC)-catalyzed benzoin-type cyclization of unsymmetrical dialdoses is developed to enable a divergent cyclitol synthesis. The choice of chiral NHCs and protecting groups affects the site-selectivity. The resulting inososes are converted into epi-, muco- and myo-inositols, and their chiral protected derivatives are formed in good yields.
April 5, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28379195/avian-and-mammalian-facilitative-glucose-transporters
#10
REVIEW
Mary Shannon Byers, Christianna Howard, Xiaofei Wang
The GLUT members belong to a family of glucose transporter proteins that facilitate glucose transport across the cell membrane. The mammalian GLUT family consists of thirteen members (GLUTs 1-12 and H⁺-myo-inositol transporter (HMIT)). Humans have a recently duplicated GLUT member, GLUT14. Avians express the majority of GLUT members. The arrangement of multiple GLUTs across all somatic tissues signifies the important role of glucose across all organisms. Defects in glucose transport have been linked to metabolic disorders, insulin resistance and diabetes...
April 5, 2017: Microarrays
https://www.readbyqxmd.com/read/28377904/mycobacterium-avium-subsp-paratuberculosis-map-fatty-acids-profile-is-strain-dependent-and-changes-upon-host-macrophages-infection
#11
Marta Alonso-Hearn, Naiara Abendaño, Maria A Ruvira, Rosa Aznar, Mariana Landin, Ramon A Juste
Johne's disease is a chronic granulomatous enteritis of ruminants caused by the intracellular bacterium Mycobacterium avium subsp. paratuberculosis (Map). We previously demonstrated that Map isolates from sheep persisted within host macrophages in lower CFUs than cattle isolates after 7 days of infection. In the current study, we hypothesize that these phenotypic differences between Map isolates may be driven be the fatty acids (FAs) present on the phosphadidyl-1-myo-inositol mannosides of the Map cell wall that mediate recognition by the mannose receptors of host macrophages...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28367604/ultra-high-field-proton-mr-spectroscopy-in-early-stage-amyotrophic-lateral-sclerosis
#12
Ian Cheong, Małgorzata Marjańska, Dinesh K Deelchand, Lynn E Eberly, David Walk, Gülin Öz
A major hurdle in the development of effective treatments for amyotrophic lateral sclerosis (ALS) has been the lack of robust biomarkers for use as clinical trial endpoints. Neurochemical profiles obtained in vivo by high field proton magnetic resonance spectroscopy ((1)H-MRS) can potentially provide biomarkers of cerebral pathology in ALS. However, previous (1)H-MRS studies in ALS have produced conflicting findings regarding alterations in the levels of neurochemical markers such as glutamate (Glu) and myo-inositol (mIns)...
April 3, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28366078/-the-myo-inositol-is-beneficial-in-the-therapy-of-pregnancy-with-insulin-dependent-type-2-diabetes-and-polycystic-ovary-syndrome
#13
Attila Kun, János Tornóczky
Authors would like to demonstrate the beneficial effect of myo-inositol supplementation in a pregnant woman with insulin-dependent type 2 diabetes mellitus and polycystic ovary syndrome. Insulin and metformin treatment could not achieve normalization of glucose homeostasis for 3 years, and hypoglycemic episodes were frequent. Myo-inositol and folic acid supplementation added to the basic treatment resulted in improved glucose levels in 2 months. At this time she became pregnant. During pregnancy serum glucose levels still improved in the next 2 months...
April 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/28350402/metabolomics-approach-for-multibiomarkers-determination-to-investigate-dengue-virus-infection-in-human-patients
#14
Nurul Shahfiza, Hasnah Osman, Tang Thean Hock, Abdel-Hamid Zaki Abdel-Hamid
BACKGROUND: Dengue is one of the major public health problems in the world, affecting more than fifty million cases in tropical and subtropical region every year. The metabolome, as pathophysiological end-points, provide significant understanding of the mechanism and progression of dengue pathogenesis via changes in the metabolite profile of infected patients. Recent developments in diagnostic technologies provide metabolomics for the early detection of infectious diseases. METHODS: The mid-stream urine was collected from 96 patients diagnosed with dengue fever at Penang General Hospital (PGH) and 50 healthy volunteers...
March 30, 2017: Acta Biochimica Polonica
https://www.readbyqxmd.com/read/28330181/optimization-of-medium-composition-for-in-vitro-shoot-proliferation-and-growth-of-date-palm-cv-mejhoul
#15
Mouaad Amine Mazri, Reda Meziani, Jamal El Fadile, Az-Eddine Ezzinbi
The effects of major mineral salts, L-glutamine, myo-inositol and carbon source on shoot bud proliferation of date palm (Phoenix dactylifera L.) cv. Mejhoul were evaluated. Different concentrations of ammonium nitrate (NH4NO3; 550, 825 or 1650 mg/L), potassium nitrate (KNO3; 633.3, 950 or 1900 mg/L), calcium chloride dehydrate (CaCl2·2H2O; 147, 220 or 440 mg/L), potassium dihydrogen phosphate (KH2PO4; 57, 85 or 170 mg/L), magnesium sulfate heptahydrate (MgSO4·7H2O; 123, 185 or 370 mg/L), L-glutamine and myo-inositol (0...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330134/phytases-from-enterobacter-and-serratia-species-with-desirable-characteristics-for-food-and-feed-applications
#16
Harpreet Kaur Kalsi, Rajveer Singh, Harcharan Singh Dhaliwal, Vinod Kumar
Phytases are enzymes of great industrial importance with wide range of applications in animal and human nutrition. These catalyze the hydrolysis of phosphomonoester bonds in phytate, thereby releasing lower forms of myo-inositol phosphates and inorganic phosphate. Addition of phytase to plant-based foods can improve its nutritional value and increase mineral bioavailability by decreasing nutritional effect of phytate. In the present investigation, 43 phytase positive bacteria on PSM plates were isolated from different sources and characterized for phytase activity...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28327767/regioselective-sn2-reactions-for-rapid-syntheses-of-azido-inositols-by-one-pot-sequence-specific-nucleophilysis
#17
Arthi Ravi, Syed Zahid Hassan, Ajithkumar N Vanikrishna, Kana M Sureshan
Triflates of myo-inositol undergo facile solvolysis in DMSO and DMF yielding SN2 products substituted with O-nucleophiles; DMF showed slower kinetics. Axial O-triflate undergoes faster substitution than equatorial O-triflate. By exploiting this difference in kinetics, solvent-tuning and sequence-controlled nucleophilysis, rapid synthesis of three azido-inositols of myo-configuration from myo-inositol itself has been achieved.
March 22, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28325784/the-prevention-of-gestational-diabetes-mellitus-with-antenatal-oral-inositol-supplementation-a-randomized-controlled-trial
#18
Maria Farren, Niamh Daly, Aoife McKeating, Brendan Kinsley, Michael J Turner, Sean Daly
OBJECTIVES: This study investigated if inositol in a combination of myo-inositol and D-Chiro-inositol would prevent gestational diabetes mellitus (GDM) in women with a family history of diabetes. RESEARCH DESIGN AND METHODS: This was a randomized controlled trial that examined whether inositol from the first antenatal visit prevents GDM. The trial was carried out in a single-center tertiary referral center. Women with a family history of diabetes were enrolled at the first antenatal visit...
March 21, 2017: Diabetes Care
https://www.readbyqxmd.com/read/28323160/effect-of-age-and-the-apoe-gene-on-metabolite-concentrations-in-the-posterior-cingulate-cortex
#19
Sana Suri, Uzay Emir, Charlotte J Stagg, Jamie Near, Ralf Mekle, Florian Schubert, Enikő Zsoldos, Abda Mahmood, Archana Singh-Manoux, Mika Kivimäki, Klaus P Ebmeier, Clare E Mackay, Nicola Filippini
Proton magnetic resonance spectroscopy ((1)H-MRS) has provided valuable information about the neurochemical profile of Alzheimer's disease (AD). However, its clinical utility has been limited in part by the lack of consistent information on how metabolite concentrations vary in the normal aging brain and in carriers of apolipoprotein E (APOE) ε4, an established risk gene for AD. We quantified metabolites within an 8cm(3) voxel within the posterior cingulate cortex (PCC)/precuneus in 30 younger (20-40 years) and 151 cognitively healthy older individuals (60-85 years)...
March 18, 2017: NeuroImage
https://www.readbyqxmd.com/read/28320484/nutritional-intervention-preconception-and-during-pregnancy-to-maintain-healthy-glucose-metabolism-and-offspring-health-nipper-study-protocol-for-a-randomised-controlled-trial
#20
Keith M Godfrey, Wayne Cutfield, Shiao-Yng Chan, Philip N Baker, Yap-Seng Chong
BACKGROUND: Improved maternal nutrition and glycaemic control before and during pregnancy are thought to benefit the health of the mother, with consequent benefits for infant body composition and later obesity risk. Maternal insulin resistance and glycaemia around conception and in early pregnancy may be key determinants of maternal physiology and placental function, affecting fetal nutrient supply and maternal-feto-placental communications throughout gestation, with implications for later postnatal health...
March 20, 2017: Trials
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