Gastroenterology Research and Practice

Research Article

Identification of Lesional Tissues and Nonlesional Tissues in Early Gastric Cancer Endoscopic Submucosal Dissection Specimens Using a Fiber Optic Raman System

Table 1

Raman peak assignments.
Raman shift
Nonlesional tissuesHGIN tissuesAdenocarcinoma tissuesLesional tissuesAssignment
820 cm-1Structural protein modes of tumors
826 cm-1826 cm-1826 cm-1Tyrosine
838 cm-1Amine deformation vibrations
849 cm-1849 cm-1
852 cm-1Proline, tyrosine
861 cm-1861 cm-1Tyrosine, collagen (859 cm-1)
875 cm-1875 cm-1Tryptophan
887 cm-1
888 cm-1
889 cm-1
891 cm-1Saccharide
948 cm-1Single-bond stretching vibrations for the amino acids proline and valine and polysaccharides
1101 cm-11101 cm-1
1102 cm-1
1103 cm-1Phenylalanine
1171 cm-11171 cm-11171 cm-11171 cm-1Phenylalanine, tyrosine
1206 cm-1Tyrosine
1209 cm-11209 cm-11209 cm-1
1234 cm-1Amide III
1235 cm-1
1236 cm-11236 cm-1
1253 cm-1C-O4 aromatic stretching
1292 cm-1Cytosine
1293 cm-1
1294 cm-1
1323 cm-1
1324 cm-11324 cm-1Collagen and purine bases of DNA
1413 cm-11413 cm-11413 cm-1
1417 cm-1C=C stretching in quinoid ring
1479 cm-1Amide II
1517 cm-11517 cm-11517 cm-1β-carotene accumulation
1531 cm-1Carotenoid, absent from normal tissues
1560 cm-1Tryptophan
1562 cm-11562 cm-11562 cm-1
1634 cm-1Amide I
1678 cm-1NADH
1678 cm-1
1729 cm-1Ester group