PubMed · 5276214
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B F Gurney. 1971. Catecholamines: 1B., epinephrine.. https://pubmed.ncbi.nlm.nih.gov/5276214/
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Glutamine is the most abundant free amino acid in the human body. Recent studies indicate that it may be an important vehicle for interorgan nitrogen and carbon transport. However, relatively little is known about hormonal factors regulating its metabolism in humans. We review here our recent work on the effects of insulin, glucagon and epinephrine on plasma glutamine kinetics and its conversion to glucose by liver and kidney.
A film consisting of polyethyleneimine (PEI), Au nanoparticles (12 +/- 1 nm) and coadsorbed cyclobis(paraquat-p-phenylene) (1) was assembled as a sensing interface on the Al2O3 insulating layer of an ion-sensitive field-effect transistor (ISFET). Adrenaline (2) was sensed by the functionalized ISFET with a detection limit of 1 x 10(-6) M. The sensing ability of the nanostructured device for the analysis of adrenaline originates from the preconcentration of the analyte in the cyclophane by pi-pi donor-acceptor interactions. Analysis of adrenaline is accomplished by the measurement of the source-drain current, Isd, or by the gate-source voltage, Vgs. The sensing device is reusable (at least 100 cycles) and exhibits high stability.