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myo-inositol

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https://www.readbyqxmd.com/read/29243796/can-high-levels-of-d-chiro-inositol-in-follicular-fluid-exert-detrimental-effects-on-blastocyst-quality
#1
K Ravanos, G Monastra, T Pavlidou, M Goudakou, N Prapas
OBJECTIVE: It was previously shown that higher concentrations of myo-inositol in human follicular fluid improve oocyte and embryo quality, whereas D-chiro-inositol seems to worsen oocyte quality and ovarian response in polycystic ovary syndrome patients. Our study was the first one aiming to test whether different myo-inositol and D-chiro-inositol concentration in follicular fluids correlate with blastocyst quality in healthy young women. PATIENTS AND METHODS: Eight egg donors and eleven couples undergoing in vitro fertilization, were involved in a prospective observational study...
December 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29241575/dietary-supplementation-with-myo-inositol-reduces-hepatic-triglyceride-accumulation-and-expression-of-both-fructolytic-and-lipogenic-genes-in-rats-fed-a-high-fructose-diet
#2
Masaya Shimada, Masato Hibino, Anna Takeshita
Excessive fructose ingestion drastically enhances hepatic lipid accumulation. The most prominent form of inositol-myo-inositol (MI)-remarkably reduces high sucrose-induced hepatic triglyceride (TG) accumulation. Because MI is a major and strong lipotrope, we hypothesized in this study that MI improves fatty liver more induced by excessive ingestion of fructose than sucrose. Rats were fed a high-glucose diet (HGD), a high-fructose diet (HFD), or an HFD supplemented with 0.2% MI for 12 days. Hepatic levels of TG and mRNAs for fructolysis (ketohexokinase and aldolase B), lipogenesis (pyruvate kinase, liver, and RBC; glucose-6-phosphate dehydrogenase; acetyl-CoA carboxylase alpha; fatty acid synthase; and stearoyl-CoA desaturase 1), and a key transcription factor for lipogenesis-carbohydrate-responsive element-binding protein-were significantly increased in the HFD group compared with the HGD group, and the increase was markedly decreased by MI supplementation...
November 2017: Nutrition Research
https://www.readbyqxmd.com/read/29241131/subcellular-distribution-and-chemical-form-of-phosphorus-involved-in-alleviating-phosphorus-toxicity-of-the-phosphorus-accumulator-polygonum-hydropiper
#3
Daihua Ye, Tingxuan Li, Xizhou Zhang, Zicheng Zheng
Polygonum hydropiper is a dominant plant species in Shifang phosphorus (P) mine area and is a promising P-accumulator used for P-phytoextraction. To date, little information is available on the physiological response involved in alleviating P toxicity of P. hydropiper under high P. A pot experiment was carried out to investigate growth, P subcellular distribution, chemical forms in two ecotypes of P. hydropiper under high levels (1, 4, and 8 mmol P L-1) of inorganic P (Pi) and organic P (Po), supplied as KH2PO4 and myo-inositol hexaphosphoric acid dodecasodium salt, respectively...
December 6, 2017: Chemosphere
https://www.readbyqxmd.com/read/29236991/neurochemical-changes-in-the-medial-wall-of-the-brain-in-chronic-migraine
#4
David M Niddam, Kuan-Lin Lai, Shang-Yueh Tsai, Yi-Ru Lin, Wei-Ta Chen, Jong-Ling Fuh, Shuu-Jiun Wang
Migraine chronification is associated with a dysfunctional thalamocortical pathway. The present study addressed whether abnormal concentrations of neurochemicals exist in key brain regions of this pathway in chronic migraine. Magnetic resonance spectroscopic imaging of the bilateral medial walls of the brain was used to measure choline, creatine, glutamate and glutamine, myo-inositol, and N-acetyl-aspartate in chronic migraine patients and in matched groups of episodic migraine patients and healthy controls...
December 11, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29233707/phylogenetic-characterization-of-transporter-proteins-in-the-cnidarian-dinoflagellate-symbiosis
#5
Ashley E Sproles, Nathan L Kirk, Sheila A Kitchen, Clinton A Oakley, Arthur R Grossman, Virginia M Weis, Simon K Davy
Metabolic exchange between cnidarians and their symbiotic dinoflagellates is central to maintaining their mutualistic relationship. Sugars are translocated to the host, while ammonium and nitrate are utilized by the dinoflagellates (Symbiodinium spp.). We investigated membrane protein sequences of each partner to identify potential transporter proteins that move sugars into cnidarian cells and nitrogen products into Symbiodinium cells. We examined the facilitated glucose transporters (GLUT), sodium/glucose cotransporters (SGLT), and aquaporin (AQP) channels in the cnidarian host as mechanisms for sugar uptake, and the ammonium and high-affinity nitrate transporters (AMT and NRT2, respectively) in the algal symbiont as mechanisms for nitrogen uptake...
December 9, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/29230507/evidence-for-regional-hippocampal-damage-in-patients-with-schizophrenia
#6
Sadhana Singh, Subash Khushu, Pawan Kumar, Satnam Goyal, Triptish Bhatia, Smita N Deshpande
PURPOSE: Schizophrenia patients show cognitive and mood impairments, including memory loss and depression, suggesting damage in the brain regions. The hippocampus is a brain structure that is significantly involved in memory and mood function and shows impairment in schizophrenia. In the present study, we examined the regional hippocampal changes in schizophrenia patients using voxel-based morphometry (VBM), Freesurfer, and proton magnetic resonance spectroscopy (1H MRS) procedures. METHODS: 1H MRS and high-resolution T1-weighted magnetic resonance imaging were collected in both healthy control subjects (N = 28) and schizophrenia patients (N = 28) using 3-Tesla whole body MRI system...
December 11, 2017: Neuroradiology
https://www.readbyqxmd.com/read/29223496/multi-modal-imaging-investigation-of-anterior-cingulate-cortex-cytoarchitecture-in-neurodevelopment
#7
Natalie J Forde, Jilly Naaijen, David J Lythgoe, Sophie E A Akkermans, Thaïra J C Openneer, Andrea Dietrich, Marcel P Zwiers, Pieter J Hoekstra, Jan K Buitelaar
Multi-modal imaging may improve our understanding of the relationship between cortical morphology and cytoarchitecture. To this end we integrated the analyses of several magnetic resonance imaging (MRI) and spectroscopy (MRS) metrics within the anterior cingulate cortex (ACC). Considering the ACCs role in neurodevelopmental disorders, we also investigated the association between neuropsychiatric symptoms and the various metrics. T1 and diffusion-weighted MRI and 1H-MRS (ACC voxel) data along with phenotypic information were acquired from children (8-12 years) with various neurodevelopmental disorders (n=95) and healthy controls (n=50)...
December 6, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29216370/the-role-of-arabidopsis-inositol-polyphosphate-kinase-atipk2%C3%AE-in-glucose-suppression-of-seed-germination-and-seedling-development
#8
Qiaofeng Yang, Sihong Sang, Yao Chen, Zhaoyun Wei, Peng Wang
Seed germination and subsequent seedling development are critical phases in plant. These processes are regulated by a complex molecular network in which sugar has been reported to play an essential role. However, factors affecting sugar responses remain to be fully elucidated. In this study, we demonstrate that AtIPK2β, known to participate in the synthesis of myo-inositol 1,2,3,4,5,6-hexakisphosphate (IP6, phytate), affects Arabidopsis responses to glucose during seed germination. Loss-of-function mutant atipk2β showed increased sensitivity to 6% glucose and paclobutrazol (PAC)...
December 4, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/29208041/metabolomics-reveals-distinct-antibody-independent-molecular-signatures-of-ms-aqp4-antibody-and-mog-antibody-disease
#9
Maciej Jurynczyk, Fay Probert, Tianrong Yeo, George Tackley, Tim D W Claridge, Ana Cavey, Mark R Woodhall, Siddharth Arora, Torsten Winkler, Eric Schiffer, Angela Vincent, Gabriele DeLuca, Nicola R Sibson, M Isabel Leite, Patrick Waters, Daniel C Anthony, Jacqueline Palace
The overlapping clinical features of relapsing remitting multiple sclerosis (RRMS), aquaporin-4 (AQP4)-antibody (Ab) neuromyelitis optica spectrum disorder (NMOSD), and myelin oligodendrocyte glycoprotein (MOG)-Ab disease mean that detection of disease specific serum antibodies is the gold standard in diagnostics. However, antibody levels are not prognostic and may become undetectable after treatment or during remission. Therefore, there is still a need to discover antibody-independent biomarkers. We sought to discover whether plasma metabolic profiling could provide biomarkers of these three diseases and explore if the metabolic differences are independent of antibody titre...
December 6, 2017: Acta Neuropathologica Communications
https://www.readbyqxmd.com/read/29205045/colon-ascendens-stent-peritonitis-casp-induces-excessive-inflammation-and-systemic-metabolic-dysfunction-in-a-septic-rat-model
#10
Limin Zhang, Yuan Tian, Jianfen Yang, Jieshou Li, Huiru Tang, Yulan Wang
The colon ascendens stent peritonitis (CASP) surgery creates a leakage of intestinal contents, resulting in polymicrobial sepsis associated with a high risk for postoperative multiple organ failure and death in surgical patients. To evaluate the effects of CASP on multiple organs, we analyzed the systemic metabolic consequences in liver, kidney, lung and heart of rats after CASP by employing a combination of metabolomics, clinical chemistry and biological assays. We found that CASP surgery after 18 h caused significant elevations of lipid, amino acids, acetate, choline, PC and GPC in rat liver together with significant depletion of glucose and glycogen...
December 5, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/29202709/transcriptomic-and-metabolic-responses-of-calotropis-procera-to-salt-and-drought-stress
#11
Mohammed Z Mutwakil, Nahid H Hajrah, Ahmed Atef, Sherif Edris, Mernan J Sabir, Areej K Al-Ghamdi, Meshaal J S M Sabir, Charlotte Nelson, Rania M Makki, Hani M Ali, Fotouh M El-Domyati, Abdulrahman S M Al-Hajar, Yoann Gloaguen, Hassan S Al-Zahrani, Jamal S M Sabir, Robert K Jansen, Ahmed Bahieldin, Neil Hall
BACKGROUND: Calotropis procera is a wild plant species in the family Apocynaceae that is able to grow in harsh, arid and heat stressed conditions. Understanding how this highly adapted plant persists in harsh environments should inform future efforts to improve the hardiness of crop and forage plant species. To study the plant response to droμght and osmotic stress, we treated plants with polyethylene glycol and NaCl and carried out transcriptomic and metabolomics measurements across a time-course of five days...
December 4, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/29187000/does-myo-inositol-oxygenase-the-only-enzyme-to-catalyze-myo-inositol-in-vivo-play-a-role-in-the-etiology-of-polycystic-ovarian-syndrome
#12
Cuma Mertoglu, Murat Gunay, Vahdet Gul, Mehmet Kulhan, Mehmet Aktas, Taha Abdulkadir Coban
In polycystic ovary syndrome (PCOS), myo-inositol (MI) supplements have shown many beneficial effects. In this study, therefore, we aimed to investigate the serum level of myo-inositol oxygenase (MIOX), which is the only enzyme catalyzing MI in vivo, in patients with PCOS. Serum MIOX enzyme levels and other laboratory parameters were compared between sixty patients, who were diagnosed with PCOS for the first time, and sixty healthy individuals at similar age and sex. MIOX serum levels were not different between two groups (p = 0...
November 29, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/29186495/sugar-metabolism-reprogramming-in-a-non-climacteric-bud-mutant-of-a-climacteric-plum-fruit-during-development-on-the-tree
#13
Macarena Farcuh, Bosheng Li, Rosa M Rivero, Lyudmila Shlizerman, Avi Sadka, Eduardo Blumwald
We investigated sugar metabolism in leaves and fruits of two Japanese plum (Prunus salicina Lindl.) cultivars, the climacteric Santa Rosa and its bud sport mutant the non-climacteric Sweet Miriam, during development on the tree. We previously characterized differences between the two cultivars. Here, we identified key sugar metabolic pathways. Pearson coefficient correlations of metabolomics and transcriptomic data and weighted gene co-expression network analysis (WGCNA) of RNA sequencing (RNA-Seq) data allowed the identification of 11 key sugar metabolism-associated genes: sucrose synthase, sucrose phosphate synthase, cytosolic invertase, vacuolar invertase, invertase inhibitor, α-galactosidase, β-galactosidase, galactokinase, trehalase, galactinol synthase, and raffinose synthase...
November 25, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/29185694/the-molecular-mechanism-of-substrate-recognition-and-catalysis-of-the-membrane-acyltransferase-pata-from-mycobacteria
#14
Montse Tersa, Lluís Raich, David Albesa-Jové, Beatriz Trastoy, Jacques Prandi, Martine Gilleron, Carme Rovira, Marcelo E Guerin
Glycolipids play a central role in a variety of important biological processes in all living organisms. PatA is a membrane acyltransferase involved in the biosynthesis of phosphatidyl-myo-inositol mannosides (PIMs), key structural elements and virulence factors of Mycobacterium tuberculosis. PatA catalyzes the transfer of a palmitoyl moiety from palmitoyl-CoA to the 6-position of the mannose ring linked to the 2-position of inositol in PIM1/PIM2. We report here the crystal structure of PatA in the presence of 6-O-palmitoyl-α-D-mannopyranoside, unraveling the acceptor binding mechanism...
November 29, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/29173209/time-series-responses-of-swine-plasma-metabolites-to-ingestion-of-diets-containing-myo-inositol-or-phytase
#15
Aaron J Cowieson, Franz F Roos, Jean-Paul Ruckebusch, Jonathan W Wilson, Patrick Guggenbuhl, Hang Lu, Kolapo M Ajuwon, Olayiwola Adeola
The effect of the ingestion of diets containing either myo-inositol or exogenous phytase on plasma metabolites was examined using 29 kg barrows. The diets were: control (maize, soya, rapeseed, rice bran), control plus 2 g/kg myo-inositol, control plus 1000 phytase units (FYT)/kg or 3000 FYT/kg exogenous phytase. Pigs were housed in a PigTurn device and blood was collected, from jugular catheters, via an automated system at -30, (30 min before feeding), 0, 15, 30, 45, 60, 90, 120, 150, 180, 240, 300 and 360 min post-feeding...
November 27, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/29173042/antithrombin-conformational-modulation-by-d-myo-inositol-3-4-5-6-tetrakisphosphate-tmi-a-novel-scaffold-for-the-development-of-antithrombotic-agents
#16
Pablo Ricardo Arantes, Horacio Pérez-Sánchez, Hugo Verli
Antithrombin (AT) is a serpin that inhibits mainly thrombin and fXa after being activated by binding to glycosaminoglycans as heparin and heparan sulfate. Upon binding, the native AT conformation, relatively inactive as a protease inhibitor, is converted to an activated form. Recently a new compound, named TMI, was discovered in our group with nanomolar affinity to antithrombin, and shown to be able to induce a partial activation of antithrombin. As TMI represents an original scaffold for structural optimizations aiming the development of new antithrombotic drugs, the present work demonstrated, through a series of molecular dynamics simulations, that TMI is able to modulate AT reactive center loop flexibility similarly to what is observed to heparin, as well as exposing AT P1 residue, Arg393...
November 26, 2017: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/29172718/lack-of-effects-of-myo-inositol-on-metabolism-of-primary-rat-adipocytes
#17
Tomasz Szkudelski, Iwona Hertig, Katarzyna Szkudelska
Myo-inositol is a ubiquitous cyclitol, has an important regulatory role, and its intracellular depletion is associated with pathological changes. Effects of myo-inositol on adipose tissue are poorly elucidated. In this report, short-term influence of 20, 100, and 500 µM myo-inositol on metabolism of the isolated rat adipocytes was studied. Cells were incubated for 90 min with glucose and insulin with or without myo-inositol and glucose conversion to lipids and lactate release were measured. Moreover, effects of myo-inositol on lipolysis and on the antilipolytic action of insulin were also studied...
November 27, 2017: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/29170537/hippocampal-mrs-and-subfield-volumetry-at-7t-detects-dysfunction-not-specific-to-seizure-focus
#18
Natalie L Voets, Carl J Hodgetts, Arjune Sen, Jane E Adcock, Uzay Emir
Ultra high-field 7T MRI offers sensitivity to localize hippocampal pathology in temporal lobe epilepsy (TLE), but has rarely been evaluated in patients with normal-appearing clinical MRI. We applied multimodal 7T MRI to assess if focal subfield atrophy and deviations in brain metabolites characterize epileptic hippocampi. Twelve pre-surgical TLE patients (7 MRI-negative) and age-matched healthy volunteers were scanned at 7T. Hippocampal subfields were manually segmented from 600μm isotropic resolution susceptibility-weighted images...
November 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29155299/evaluation-of-inositol-phosphates-in-urine-after-topical-administration-of-myo-inositol-hexaphosphate-to-female-wistar-rats
#19
F Grases, A Costa-Bauzá, F Berga, A Rodríguez, R M Gomila, G Martorell, M R Martínez-Cignoni
AIMS: Previous studies demonstrated a remarkable increase of urinary InsP6 by topical administration. However, the methodology used for InsP6 analysis was not specific. The aim of this paper is to measure urinary inositol phosphates InsPs using more advanced methodologies and to compare the results with those obtained by the non-specific method. MATERIALS AND METHODS: We fed 12 female rats with a diet without InsP6 for 16days. Then, we administered a topical InsP6 gel at high doses for 7days (50mgInsP6/day) or at low doses for 28days (20mgInsP6/day)...
November 16, 2017: Life Sciences
https://www.readbyqxmd.com/read/29153661/pkb-akt-and-mapk-erk-phosphorylation-is-highly-induced-by-inositols-novel-potential-insights-in-endothelial-dysfunction-in-preeclampsia
#20
Rossella D'Oria, Luigi Laviola, Francesco Giorgino, Vittorio Unfer, Stefano Bettocchi, Marco Scioscia
PKB/Akt and MAP/ERK are intracellular kinases regulating cell survival, proliferation and metabolism and as such hold a strategical role in preeclampsia. In fact intracellular pathways related to immunological alterations, endothelial dysfunction and insulin resistance in preeclampsia converge on these molecules. Inositol second messengers are involved in metabolic and cell signaling pathways and are highly expressed during preeclampsia. To evaluate the pathophysiological significance of this response, the effect of myo-inositol and d-chiro inositol on the activation of PKB/Akt and MAPK/ERK was assessed in human endothelial cells in vitro...
October 2017: Pregnancy Hypertension
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