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Comparison of In Vivo and In Vitro 1-H NMR Spectroscopy in the Rat Brain: Technical Considerations, Effects of Brain Regions and Post Weaning Isolation
Philippine C. Geiszler, A. Napolitano, M.I. Schubert, C.A. Jones, K.C.F. Fone, C.A. Daykin, D.P. Auer

In vivo and in vitro magnetic resonance (MR) spectroscopy are both used to obtain complementary information about the metabolic state of living tissue/tissue extracts, respectively. However, comparisons between in vivo and in vitro measurements are rare. The aim of this study was to compare results from in vivo and in vitro MR spectroscopy to study inter-regional variations and the effects of social isolation on metabolite levels in rat brain.

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Mass-Spectrometric Analysis with Sequenom EpiTYPER of GNAS Methylation in Pseudohypoparathyroydism Type Ib Patients Reveals Overall Methylation Defects also for the Familial Cases
Benedetta Izzi1, Bart Claes2, Diether Lambrechts2, Chris Van Geet1,3, Kathleen Freson1

Sequenom EpiTYPER analysis of GNAS methylation in Pseudohypoparathyroidism type Ib patients reveals overall GNAS methylation defects also for the familial cases. Such abnormalities are not detectable via old methodologies such as PCR followed by methylation specific restriction digestion and are here for the first time described.

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MicroRNA-23b negatively regulates urokinase and c-met and inhibits migration of human hepatocellular carcinoma cells.
Salvi A, Sabelli C, Moncini S, Venturin M, Arici B ,Riva P, Portolani N, Giulini SM, Barlati S and De Petro G.

By bioinformatics we predicted that miR-23b could recognize two sites in the 3’ UTR of uPA (urokinase-type plasminogen activator) and four sites in the 3’ UTR of c-met (hepatocyte growth factor receptor). miR-23b transfections in SKHep1C3 caused uPA and c-met decreased and migration and proliferation inhibition of SKHep1C3; anti-miR-23b transfection in human fibroblasts upregulated uPA and c-met. uPA and c-met shared a common microRNA that negatively regulates their expression.

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Interactive Metabolomics by Diffusion NMR: Improving the Odds of Finding Needles in Haystacks
Jonathan Byrne, Rasmus Bro, Florian Wulfert and Clare A. Daykin

Metabolomics investigates changes in quantities of metabolites. However, blood plasma is a complex, heterogeneous mixture of components which undergo a variety of possible molecular interactions. In particular, many low molecular weight compounds (including drugs) can exist both ‘free’ in solution, bound to proteins or within organised aggregates of macromolecules. To study the effects of e.g. disease on these interactions we have developed a technique termed ‘interactive metabolomics’.

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A compartmented in silico model of Rapeseed central metabolism
Eleftherios Pilalis, Aristotelis Chatziioannou, Fragiskos Kolisis

A large-scale in silico model was constructed for the simulation of the central metabolism of Rapeseed embryos. In order to validate this model, we performed constraint-based Flux Balance Analysis, through application of linear optimization methods. Further exploiting the derived model, an in silico gene deletion analysis and a systemic regulatory analysis by Singular Value Decomposition of the steady-state flux space were performed.

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SYBR® Green I as a biomarker for schizophrenia
Davood Zaeifi, Mehdi Rahmati, Vahab Piranfar

The purpose of this study were to examine if the mRNA of the peripheral dopamine receptor is changed in schizophrenia patients. 50 Naive patients were enrolled. After extracting RNA from white blood cells, cDNA is synthesized. After doing the quantitative Real-time PCR, expression of D3 receptors in healthy persons and patients were compared. Results of this examinations reveals that expression of D3 receptor is increased in compared with controls sample.

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Microfluidic PCR device for diagnostic pathogen detection
Johannes R. Peham, Hannes Steiner, Walter Grienauer, Rudolf Heer, Michael J. Vellekoop, Christa Nöhammer, Herbert Wiesinger

In this work a microfluidic cyclic flow PCR device is presented, which is capable of replicating the bacterial genomic DNA sequence of the 16S ribosomal RNA. The standard laboratory processing time of 3 h could be decreased to 60 min with the microfluidic reactor without loosing PCR efficiency. Integrating an optical fluorescence detector for dsDNA measurement would evolve this device into a micro total analysis system.

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Knowledge of personal energy requirements in college students
Aurora Buffington, MS, RD, Richard Tandy, PhD, and Laura Kruskall, PhD, RD, CSSD, FACSM

This study explored whether university students were able to estimate their energy requirements within a range of calories equal to predicted Estimated Energy Requirements (EER) two standard deviations. Students significantly underestimated their EER by 700 calories (p<.001). Fewer males than expected were able to estimate energy requirements as compared to females, 41.3% vs. 20.6%, ?2 (1) = 7.236, p=.007.

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No Impact of Dietary Iodine Restriction in Short Term Development of Hypothyroidism Following Fixed Dose Radioactive Iodine Therapy for Graves Disease
Jubbin J Jacob*, Charles Stephen§, Nihal Thomas*, Regi Oommen¶ and M.S.Seshadri*

To study the outcomes at 6 months after fixed dose 131I therapy for Graves’ disease (GD) with an iodine restricted diet.

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Showing Results 21 - 30 of 55
Scientific News
Assessing Anticancer Drugs Efficacy by Amino Acid Metabolomics
Researchers aimed to develop a method that determines the therapeutic efficacy of anticancer drugs based on the changes in amino acid metabolism at the cellular level.
Time Of Day Crucial to Accurately Test for Diseases
A new study published in PNAS has found that time of day and sleep deprivation have a significant effect on our metabolism.
When Drugs Do More Harm Than Good for Type 2 Diabetes Patients
Harm to quality of life outweighs benefits of treatment for older patients and those with negative feelings about side effects.
Inflammation in Fat Tissue Helps Prevent Metabolic Disease
The findings were first published online June 12 in Cell Metabolism.
Evaluating Acute Hydrogen Sulfide Poisoning in Rats through Serum Metabolomics
Through the use of GC/MS-based metabolomics, researchers have evaluated the effect of acute hydrogen sulfide poisoning on the metabolic profiles of rats.
Pathway Between Gut and Liver Regulates Bone Mass
Researchers have uncovered a previously unknown biological process involving vitamin B12 and taurine that regulates the production of new bone cells.
Study Explains How Green Tea Could Reduce Pancreatic Cancer Risk
The study published in the journal, Metabolomics, offers an explanation that researchers say could open a new area of cancer-fighting research.
Fatty Liver Disease Prevented in Mice
Blocking a path that delivers dietary fructose to the liver prevented mice from developing the condition, according to investigators.
Researchers Identify Key Mechanism in Metabolic Pathway that Fuels Cancers
Discovery provides potential target for defeating hard-to-treat tumors.
Pain Killers May Improve Health of Diabetics and the Obese
Blocking a pain receptor in mice extends lifespan and gives improved insulin response.
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