inositol

b>Inositol has 8 stereoisomers, four of which are physiologically active. myo-Inositol is the most abundant isomer in the brain and more recently shown that epi- and scyllo-inositol are also present...

..yeast two-hybrid screen using ATXR5 as bait captured AtIPS1, an enzyme which catalyses the committed step of myo-inositol (MI) biosynthesis...

..Further targeted metabolomics analyses were conducted to obtain a preliminary evaluation of the metabolic consequences of lipid changes and gene mutations in these cell models...

..Treatment of diabetic rats with aldose reductase inhibitors, aminoguanidine or myo-inositol supplementation have been shown to improve motor nerve conduction velocity and/or decreased endoneurial blood ..

D-chiro-inositol (DCI) is an active compound in tartary buckwheat [Fagopyrum tataricum (L.) Gaench] with an insulin-like bioactivity...

To characterize the function of the sodium/inositol symporter SMIT2 in skeletal muscle, human SMIT2 cDNA was transfected into L6 myoblasts using pcDNA3.1 expression vector. Compared with the pcDNA3...

..We have previously reported that scyllo-inositol inhibits Abeta(42) fibril formation but the mechanism(s) by which this occurs has not been investigated in detail...

Mycobacteria use inositol in phosphatidylinositol, for anchoring lipoarabinomannan (LAM), lipomannan (LM) and phosphatidylinosotol mannosides (PIMs) in the cell envelope, and for the production of mycothiol, which maintains the redox ..

l-myo-inositol 1-phosphate synthase (MIPS; EC 5.5.1.4) catalyzes the rate-limiting step in the synthesis of myo-inositol, a critical compound in the cell. Plants contain multiple MIPS genes, which encode highly similar enzymes...

Three different mammalian myo-inositol cotransporters are currently known; two are Na+-coupled (SMIT1 and SMIT2) and one is proton-coupled (HMIT)...

..Further studies demonstrated that PO is a negative regulator of inositol(1,4,5)trisphosphate (IP(3)) synthesis, a Li(+) sensitive intracellular signal...

The potential activities of butylated hydroxyanisole (BHA), myo-inositol, curcumin, esculetin, resveratrol and lycopene-enriched tomato oleoresin (LTO) as chemopreventive agents against lung tumor induction in A/J mice by the tobacco ..

b>Inositol phospholipids and inositol phosphates mediate well-established functions in signal transduction and in Ca2+ homeostasis in the CNS and non-neural tissues...

..Mutations in mshA demonstrate the non-essentiality of mycothiol for growth in vitro and in vivo, and provide a novel mechanism of ethionamide resistance in M. tuberculosis...

..In this paper we present a new method called InCa-SiteFinder for predicting non-covalent inositol and carbohydrate binding sites on the surface of protein structures...

..Fewer data are available on the 3-phosphorylated inositol lipids (3-PIs) that are the primary products of these kinases...

b>Inositol is involved in several aspects of reproduction. It affects overall embryogenesis, may prevent neural tube defects, and stimulates the production of lung surfactant...

In this review we discuss the biological significance of D-chiro-inositol, originally discovered as a component of a putative mediator of intracellular insulin action, where as a putative mediator, it accelerates the dephosphorylation of ..

..by increased concentrations of N-acetylaspartate and N-acetylaspartylglutamate (tNAA), glutamine (Gln), myo-inositol (Ins), and creatine and phosphocreatine...

This study presents the characterization of myo-inositol (MI) uptake in rat intestine as evaluated by use of purified membrane preparations...

..myo-Inositol, a natural isomer of glucose and a precursor for the second-messenger phosphatidyl-inositol system, has ..

..adolescents with bipolar disorder (BPD) and gender and age-matched normal controls, and to measure changes in myo-inositol levels following lithium therapy, utilizing in vivo proton magnetic resonance spectroscopy (1H MRS)...

..However, the biological determinants of this are poorly understood. The serum sodium/myo-inositol cotransporter gene is located on chromosome 21, and myo-inositol affects neuronal survival and function...

Previous data from our and other labs demonstrated a decreased chiro-inositol content in urine and tissues of human subjects and animals with type 2 diabetes...

Studies have shown that the inositol biosynthetic pathway and the enzyme glycogen synthase kinase-3 (GSK-3) are targets of the mood-stabilizing drugs lithium and valproate...

..Qualitative studies reported that N-acetyl-aspartate content was significantly lower in hippocampal sclerosis...

D-chiro-inositol (DCI) is a drug candidate for the treatment of type 2 diabetes and polycystic ovary syndrome, since it improves the efficiency with which the body uses insulin and also promotes ovulation...

..Up to half of patients do not respond adequately to currently approved treatments. This study evaluated the efficacy of adjunctive inositol for bipolar depression.

..Strongly elevated concentrations of myo-inositol in conjunction with normal or increased choline-containing compounds in all regions investigated point to ..

..The authors performed MRS to characterize metabolic alterations and their regional variation in brain tissue in GLD in vivo...

b>Inositol, a glucose isomer and second messenger precursor, regulates numerous cellular functions and has demonstrated efficacy in obsessive-compulsive disorder (OCD) through mechanisms that remain unclear...

..Galactinol synthase (GolS), which mediates the synthesis of galactinol from myo-inositol and UDP-galactose, has been proposed to be the key enzyme of the pathway...

The study aim was to assess whether the incorporation of myo-inositol (MI) into culture medium could improve oocyte maturation in vitro.

b>Inositol metabolism is well characterized in yeast at a molecular level, and yeast is the only eukaryote in which genetic, molecular and functional genomic approaches to identify lithium...

..The inositol ring of phosphatidylinositol is acylated during biosynthesis of GPI...

..This study used proton magnetic resonance spectroscopy (1H MRS) to identify the in vivo effects of lithium on myo-inositol (mI) concentrations in adolescent bipolar depression.

..A mutant strain was also defective in nitrogen fixation suggesting a regulatory role of pssB in symbiosis with clover...

..ovary syndrome have insulin resistance and hyperinsulinemia, possibly because of a deficiency of a D-chiro-inositol-containing phosphoglycan that mediates the action of insulin...

..At the cytoplasmic side of the NPC, the conserved mRNA export factors Gle1 and inositol hexakisphosphate (IP(6)) play an essential role in mRNA export by activating the ATPase activity of the DEAD-box ..

..Recent reports have implicated myo-inositol (MI) in defence responses, but the relationships between MI, ROS and SA remain to be elucidated...

scyllo-Inositol (SI) is a stereoisomer of inositol whose catabolism has not been characterized in bacteria...

..In the 1980s, Berridge and colleagues proposed that Li(+) treatment acts via inhibition of IMPase (inositol monophosphatase) to deplete the cellular concentration of myo-inositol...

..We have previously shown that myo-inositol (MI) administration reduces kainic acid (KA) induced seizure scores...

scyllo-Inositol has shown promise as a potential therapeutic for Alzheimer's disease, by directly interacting with the amyloid beta (Abeta) peptide to inhibit Abeta42 fiber formation...

Ablation of the murine Slc5a3 gene results in severe myo-inositol (Ins) deficiency and congenital central apnea due to abnormal respiratory rhythmogenesis...

..Fourteen MCI, 17 AD, and 16 healthy control (HC) subjects were studied. MCI was associated with higher myo-inositol (mIn) concentration in right parietal white matter compared with HC and lower mIn levels in frontal white matter ..

b>Inositol is a key cellular metabolite for many organisms. Cryptococcus neoformans is an opportunistic pathogen which primarily infects the central nervous system, a region of high inositol concentration, of immunocompromised individuals...

b>Inositol auxotrophy (Ino(-) phenotype) in budding yeast has classically been associated with misregulation of INO1 and other genes involved in lipid metabolism...

..Myo-inositol (mI), a neuronal/glial metabolite associated with multiple functions in the brain, has been shown to be increased ..

myo-Inositol (inositol) is an essential nutrient that is used for building phosphatidylinositol and its derivatives in eukaryotes and even in some eubacteria such as the mycobacteria...

..been shown to inhibit key enzymes that regulate PIns production and alter neuronal growth cone morphology in an inositol-reversible manner...

Myo-inositol is involved in several aspects of human reproduction. Elevated concentrations of myo-inositol in human follicular fluids appear to play a positive function in follicular maturity and provide a marker of good quality oocytes...

..Here, we show that a second vitamin, myo-inositol, is capable of significantly reducing the incidence of spinal NTDs in curly tail mice, a genetic model of folate-..

Lithium inhibits inositol monophosphatase and also reduces inositol transporter function. To determine if one or more of these mechanisms might underlie the behavioral effects of lithium, we studied inositol transporter knockout mice...

Altered inositol metabolism is implicated in a number of diabetic complications...

The production of the intracellular second messengers inositol (1,4,5)-trisphosphate (InsP3) and sn 1,2-diacylglycerol (DG) in response to a wide variety of extracellular primary messengers is achieved by an extended family of inositol ..

Bacillus subtilis IolT is the major myo-inositol transporter for growth, while IolF is a minor one unable to support growth. We found that either IolT or IolF was sufficient for moderate growth using D-chiro-inositol...

There is evidence that inositol isomers may help protect against formation of toxic fibrils of Abeta fragments in Alzheimer's disease mouse models...

..We also searched for correlations between neuroimaging abnormalities and neuropsychological variables...

..Tumorigenesis is inhibited by dietary myo-inositol in the post-initiation phase...

..Aging may further exacerbate brain metabolites associated with inflammation in HIV patient and thereby increase the risk for cognitive impairment...

..an unambiguous measurement of glutamate as well as other metabolites such as NAA, choline, creatine, and myo-inositol. In this study, we extend the single voxel TE-Averaged PRESS technique for two-dimensional (2D) spectroscopic ..

..Compared with other MR imaging measures, serial (1)H-MRSI may be relatively less sensitive to progressive pathological tissue changes in early RRMS...

..The goal of our study is to determine whether magnetic resonance spectroscopy (MRS) is able to detect alterations in the white matter supporting the hypothesis of delayed myelination in children with IDD and normal MRI...

..Genetic studies have established an association with mutations in the CACNA1A gene. However, the mechanisms underlying cerebellar involvement are largely unknown...

..We were unable to detect any significant MR spectral change, i.e. neither in the peak areas of inositol, choline, creatine, glutamate and N-acetylaspartate nor in the lactate level, in the contralateral posterior limb ..

..MRI was apparent in the pulvinar region in all vCJD patients; this region also showed greatly increased myo-inositol [MI] (mean 2.5-fold, P=0.01) and decreased N-acetyl-aspartate (NAA; mean 2-fold, P=0.01)...

..We suggest including PG in the LCModel basis-set for neonatal brain H-MRS to improve the discrimination and quantification of lactate and inositol.

..CONCLUSIONS: The results of this study suggest compromised neuronal integrity and deficits in density of neuronal and nonneuronal cells in components of the neural circuits implicated in Tourette's disorder...

..3 mM) such as glutamate (Glu), N-acetylaspartate (NAA), creatine (Cr)/phosphocreatine (PCr) and myo-inositol (Ins) were identified with an error below 3%; most other metabolites were quantified with errors in the order of ..

..Different noise and line broadening conditions were considered and simulated in the spectral processing in order to evaluate the effect of spectral quality on the concentration estimates...

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..The spectral analysis for spectra with longer TE times also showed less variability due the higher metabolite SNR, simpler spectral patterns, and the decreased baseline contributions...

..to compare concentrations of N-acetylaspartate (NAA), glutamate (Glu), glutamine (Gln), Glx (=Glu + Gln), myo-inositol (mI), total creatine (Cre) and other metabolites in the temporal lobes of patients with mesial temporal lobe ..

..The purpose of the present study was to investigate how ACC biochemistry in OCD varies as a function of gender, hemisphere, subregion, and symptomatology...

..To investigate the relationship between subject age and white matter brain metabolite concentrations and R(2) relaxation rates in a cross-sectional study of human brain...

..The purpose of this study was to investigate metabolic alterations in NAWM in patients with CIS with use of high-field (1)H-MR spectroscopy and to compare the results to those in patients with an early course of MS...

..All patients underwent brain MR including T1W, T2W, FLAIR and spectroscopy. After a review had been validated by three different reviewers, review of MR images was performed by consensus using a semi-quantitative scale...

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..1). Concentration values of N-acetyl-aspartate (NAA), total creatine (tCr), choline (Cho), myo-inositol (mI), and the sum of glutamate and glutamine (Glx) for both methods were consistent with previous studies...

..could be reliably quantified in parietal white matter under these experimental conditions: N-acetylaspartate, myo-inositol, glucose, glutamate, glutathione, creatine and choline...

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..The data also showed an increase in inositol (Ins), glutamate, and creatine (Cr) concentrations on the third day postinjury; the Ins concentration remained ..

..lower N-acetyl-aspartate/creatine ratios bilaterally in the hippocampus-amygdala but not cerebellum, whereas myo-inositol/creatine was significantly increased in all measured regions...

..Increases in the glial metabolite myo-inositol were observed at later stages when microglial and astrocyte activation is substantial...

..spectroscopy ((1)H-MRS) visible metabolites (N-acetyl aspartate [NAA], creatine [Cr], choline [Cho], and myo-Inositol [mI]) in brains of elderly individuals over 3 years and relate them to cognitive function...

..To perform systematic analysis of current proton magnetic resonance spectroscopy ((1)H MRS) findings in bipolar disorder (BD)...

..of major depressive disorder (MDD) that examined the metabolites N-acetylaspartate (NAA), choline (Cho), myo-inositol (mI), glutamate/glutamine/gamma-aminobutyric acid-GABA (Glx), and creatine (Cr)...

..performed to assess N-acetylaspartate/creatine (NAA)/Cr, glutamate+glutamine (Glx)/Cr, choline (Cho)/Cr and myo-inositol (mI)/Cr ratios. Patients were assessed within the first 10 days after stroke and again four months later...

..Absolute values of myo-inositol, creatine, N-acetyl aspartate, glutamate, glutamine, and choline corrected for CSF were measured using the LC-..

..g., glutamate (Glu) and inositol (Ino)) with acceptable spectral quality and localization...

..In the present study, we wanted to test the hypothesis that prefrontal glutamate signals indirectly indicate dopaminergic dysfunction in adult patients with ADHD...

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..To evaluate (1)H-labelled magnetic resonance spectroscopy (MRS) in patients with a low Mini Mental State Examination (MMSE) score identified during a dementia community-based survey...

..In considering therapy for neuroAIDS the findings here support prevention of the encephalitic process, but suggest that suppressing the formation of multinucleated giant cells alone would be insufficient to prevent neuronal injury...

..A repeatibility error of <5%, and a coefficient of variation (CV) of <10% were observed for brain Glu levels in a study of six normal volunteers...

..METHODS: Whole brain and subcortical measures of Cho, NAA, Cr, and myo-inositol (mI) were obtained in 18 patients with MDD and 20 control subjects using automated two-dimensional CSI (1)H-MRS...

..08-1.12 x 10(-3) mm(2)/s), compared with the apparent diffusion coefficient values from the normal white matter regions. Apparent diffusion coefficient values in the globus pallidi were lower than those in the unaffected thalamus...

..Changes of creatine and phosphocreatine (Cr&PCr), N-acetylaspartate (NAA), choline (Cho), inositol (Ino), taurine (Tau), glutamate (Glu), and lactate (Lac) were assessed and compared to neuronal, glial and ..

..mannosyltransferase;MPI, mannosylated phosphatidylinositol;MS, mass spectrometry;myo-Ins, myo-inositol;ORF, open reading frame;investigator, phosphatidyl-myo-inositol;PIM, phosphatidyl-myo-inositol mannosides;TFA, ..

..We found that oral R-flurbiprofen is well tolerated and detectable in transgenic mouse brain. Scyllo-inositol, an isomer of cyclohexanahexol, inhibits A oligomers formation and, when orally administered to AD transgenicyc ..

..We found that oral R-flurbiprofen is well tolerated and detectable in transgenic mouse brain. Scyllo-inositol, an isomer of cyclohexanahexol, inhibits A oligomers formation and, when orally administered to AD transgenicyc ..

..neurotransmitters, growth factors, and other stimuli produce their physiological effects by stimulation of inositol lipid breakdown...

..LPG is a glycosylphosphatidyl inositol-like anchored molecule, which unlike other GPI-like parasitic molecules, contains no mannose and has poly-N-..

..LPG is a glycosylphosphatidyl inositol-like anchored molecule, which unlike other GPI-like parasitic molecules, contains no mannose and has poly-N-..

..the cleavage of phosphoinositides to diacylglycerol (a second messenger activator of protein kinase C) and inositol phosphates...

..In these protozoan flagellates, myo-inositol plays an especially important role as the precursor for GPI-anchored protective and/or immunomodulatory surface ..

Many extracellular stimuli produce their physiological effects through promotion of inositol lipid hydrolysis...

Many extracellular stimuli produce their physiological effects through promotion of inositol lipid hydrolysis...

..The cellular mechanisms of insulin resistance in PCOS are still largely unknown. D-chiro-inositol phosphoglycan (DCI-IPG) is a nonclassical mediator of insulin action that has been demonstrated to increase ..

..In this proposal we will study the role of three membrane transporters, those for glucose, myo-inositol and nucleosides, in the biology of Leishmania parasites...

..The second messenger D-myo-inositol 1,4,5-trisphosphate (Ins(1,4,5)P3, or IP3) binds stereospecifically to domains of membrane receptors to cause ..

..is to elucidate how diverse extracellular stimuli elicit selective cellular responses through the activation of inositol polyphosphate (IP) signaling pathways...

..volume, cells release Kv, CI-, and "non-perturbing" organic osmolytes, a major component of which is myo-inositol. Efflux of the osmolytes occurs via a volume-sensitive organic anion channel (VSOAC), which primarily gates CI'...

..More specifically, we are interested in enzymes involved in the synthesis of myo-inositol. Myo-inositol is generated by the conversion of D-glucose-6- in enzymes involved in the synthesis of myo-inositol ..

..by putative inositolphosphoglycan (IPG) mediators of insulin action and a deficiency in a specific D-chiro-inositol-containing IPG may contribute to insulin resistance in individuals with impaired glucose tolerance or type 2 ..

..the cleavage of phosphoinositides to diacylglycerol (a second messenger activator of protein kinase C), and inositol phosphates (cyclic 1,2-inositol phosphate in the case of bacterial PI-PLC and both cIP and inositol-1-phosphate ..