T.P. Wróbel et al.
520
Wa v e n u m -
ber [cm
−1
]
mode assignment
Compound
assignment
Aorta/plaque part
Ref.
1264–1274 Ch 2 , Ch 3 bending
Crystalline cholesterol—unesterfied
(free) cholesterol
Foam cells/necrotic
core
[2, 86, 92,
98]
1255–1268 Amide III, C-N stretch,
α-helix conformation
Proteins mainly
in elastin and
collagen
Elastic lamina
[2, 82, 86,
92, 95,
99]
1301
Ch 2 /Ch 3 deformation
triglycerides
Fat cells/tunica
adventitia
adipocytes
[2, 88, 92,
100]
1328
Ch 2 , Ch 3 bending
Crystalline cholesterol—unesterfied
(free) cholesterol
Foam cells/necrotic
core
[2, 86, 92,
98]
1336
desmosine/
isodesmosine
Elastin
Elastic lamina
[2, 95]
1440
Ch 2 /Ch 3 deformation
triglycerides
Fat cells/tunica
adventitia
adipocytes
[2, 92, 98,
100]
1443
Ch 2 deformation
Crystalline cholesterol—unesterfied
(free) cholesterol
and Cholesteryl
esters
Foam cells/necrotic
core
[2, 86, 92,
98]
1449–1452 β CH 2 , Ch 3
Proteins
Smooth muscle cell/
media
[2, 82, 86,
92, 99]
1517–1523 C-C/C-N stretching
β-carotenoids
Yellow crystals in
necrotic core
[2, 82, 86]
1654
C = C stretching
triglycerides
Fat cells/tunica
adventitia
adipocytes
[2, 92, 98,
100]
1660–1664 Amide I, C = o
stretching
Proteins mainly
in elastin and
collagen
Elastic lamina
[2, 82, 86,
92, 95,
99]
1667–1670 C = C stretching of
steroid ring
Free cholesterol and
cholesteryl esters
Foam cells/necrotic
core
[2, 82, 86,
100]
1668
C = C stretching
Crystalline cholesterol—unesterfied
(free) cholesterol
Foam cells/necrotic
core
[2, 86, 92,
98]
1735
C = o stretching
Cholesterol esters
Foam cells/necrotic
core
[2, 86, 92,
98]
1747
C = o stretching
esters
Fat cells/tunica
adventitia
adipocytes
[2]
2850
Ch 2 symmetric
stretching
Cholesterol esters
Foam cells/necrotic
core
[93]
Table 17.1 (continued)