Figure 1.
Representative HR MAS 1H NMR spectra of the intact human eye tissues. (a) cornea, (b) ciliary body, (c) iris, (d) lens, and (e) retina. The ppm values were assigned using sodium [2,2,3,3-d4]3′-trimethylsilylpropionate (TSP) as the reference substance at 0 ppm. Ac: acetate; Ala: alanine; Arg: arginine; Asc: ascorbate; ATP: adenosine triphosphate; But: butyrate; Ch: choline; Cr: creatine; For: formate; α -Glc: α-glucose; β -Glc: β-glucose; Glu: glutamate; Gln: glutamine; GMP: guanosine monophosphate; GPC: glycerophosphocholine; GSH: glutathione; His: histidine; h-Tau: hypo-taurine; Ile: isoleucine; Lac: lactate; Leu: leucine; m-In: myo-inositol; Met: methionine; Phe: phenylalanine; P-Ch: phosphocholine; P-Cr: phosphocreatine; Su: succinate; Tau: taurine; Tyr: tyrosine; Val: valine; ppm: parts per million.