Neurochemical profile of the mouse hypothalamus using in vivo 1H MRS at 14.1T.

Details

Serval ID
serval:BIB_57A93519A4EC
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Neurochemical profile of the mouse hypothalamus using in vivo 1H MRS at 14.1T.
Journal
NMR in Biomedicine
Author(s)
Lei H., Poitry-Yamate C., Preitner F., Thorens B., Gruetter R.
ISSN
1099-1492[electronic], 0952-3480[linking]
Publication state
Published
Issued date
2010
Volume
23
Number
6
Pages
578-583
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Abstract
The hypothalamus plays an essential role in the central nervous system of mammals by among others regulating glucose homeostasis, food intake, temperature, and to some extent blood pressure. Assessments of hypothalamic metabolism using, e.g. (1)H MRS in mouse models can provide important insights into its function. To date, direct in vivo (1)H MRS measurements of hypothalamus have not been reported. Here, we report that in vivo single voxel measurements of mouse hypothalamus are feasible using (1)H MRS at 14.1T. Localized (1)H MR spectra from hypothalamus were obtained unilaterally (2-2.2 microL, VOI) and bilaterally (4-4.4 microL) with a quality comparable to that of hippocampus (3-3.5 microL). Using LCModel, a neurochemical profile consisting of 21 metabolites was quantified for both hypothalamus and hippocampus with most of the Cramér-Rao lower bounds within 20%. Relative to the hippocampus, the hypothalamus was characterized by high gamma-aminobutryric acid and myo-inositol, and low taurine concentrations. When studying transgenic mice with no glucose transporter isoform 8 expressed, small metabolic changes were observed, yet glucose homeostasis was well maintained. We conclude that a specific neurochemical profile of mouse hypothalamus can be measured by (1)H MRS which will allow identifying and following metabolic alterations longitudinally in the hypothalamus of genetic modified models.
Keywords
Animals, Glucose Transport Proteins, Facilitative/genetics, Glucose Transport Proteins, Facilitative/metabolism, Hypothalamus/anatomy & histology, Hypothalamus/chemistry, Magnetic Resonance Spectroscopy/methods, Male, Mice, Mice, Inbred C57BL, Mice, Knockout
Pubmed
Web of science
Create date
04/08/2010 16:28
Last modification date
20/08/2019 15:11
Usage data