AMRIS Science Highlights
Magnetic Resonance Imaging (MRI) of mouse models for Alzheimer’s disease can be used to determine brain response to plaque deposits and inflammation that ultimately disrupt emotion, learning, and memory. Quantification of the early changes with high resolution MRI could help monitor and predict disease progression, as well as potentially suggest new treatment methods.
Little is known about the path of metabolic waste clearance from the brain. Here, high-field magnetic resonance images a possible pathway for metabolic waste removal from the brain and suggests that waste clearance may be one reason why we sleep.
Three variants of the coral species A cervicornis were found to have unique metabolic signatures that can be distinguished by NMR spectroscopy. Differing levels of the metabolite trimethylamine-N-oxide, an important compound that protects against nitrogen overload, can distinguish the three variants studied. Understanding how species vary metabolically, and how that translates to species survival in stressed environments, may help us to establish desirable traits that could help with restoration and other interventions.
Combining high-field NMR with infrared microscopy, scientists learned more about how gas diffuses in a novel class of molecular sieves that could one day be used for gas separation.
A new pH sensitive contrast agent for MR imaging has been developed that produces image contrast based on the local pH and that has great potential for use in living animals and medical diagnostics.
Scientists measured the first in vivo images of stimulated current within the brain using an imaging method that may improve reproducibility and safety, and help understand the mechanisms of action of electrical stimulation.
Using functional magnetic resonance imaging, researchers observe how cocaine-like drug disrupts neural activity in rats.
Scientists have discovered and characterized an unusual, complex natural product produced in worms, a finding that suggests a whole body of discoveries awaits.
Scientists analyzing maize affected by southern leaf blight determine the molecular structures of so-called “death acids.”
When molecules are forced to pass through narrow holes in membranes, they must move one-by-one in single file. When this “No Passing!” rule is in effect, researchers have recently made the surprising discovery that mixing two gases can lead to faster motion of some of the molecules through the narrow holes.
In this paper, we obtained the first brain map of a complete fruit fly head at 10 micron isotropic resolution, the highest ever reported by MR for a complete head. Using two complementary imaging sequences revealed the superior power of DWI to dissect the brain architecture at close to cellular resolution.
13C NMR when used in metabolomics 1. Provides better peak list for database matching and spectral annotation, 2. Provides better group separation and loadings annotation when using multivariate statistical analysis, and 3. Prevents possible misidentification of metabolites.
AMRIS 11.1 and 17.6T Magnets and probes were used to directly image gene expression in live mouse muscles with in vivo 31P NMR techniques.
A new non-Brownian model of anomalous translational diffusion in nervous tissue is introduced and applied to the brain. This model provides new fractional order parameters of diffusion, entropy, waiting time and jump length that represent unique markers of morphology in neural tissue.
The MagLab’s AMRIS facility has recently implemented dissolution DNP technology. The system utilizes a 5 T magnet in which samples are cooled to 14,000 gain in SNR on dissolution and injection into our 4.7T MRI/S scanner.
Researchers using pulsed field gradient NMR at the AMRIS facility found clear evidence for molecular single file diffusion of xenon gas confined inside model nanotube systems.
A new 1.5-mm high-temperature superconducting probe designed to detect carbon 13 will significantly enhance studies in natural products and metabolomics.
Nematodes are the most abundant animal on earth, and they live in virtually every ecological niche on earth. Parasitic species have a significant health and economic impact through the infection of crops, domestic animals, and humans. Therefore, we are working to unravel the chemical language used by nematodes, with the ultimate goals of better understanding the role of small molecules in regulating behavior and of developing new approaches to control nematode parasites.