Raman microspectroscopy of noncancerous and cancerous human breast tissues. Identification and phase transitions of linoleic and oleic acids by Raman low-temperature studies.
We present the results of Raman studies in the temperature range of 293-77 K on vibrational properties of linoleic and oleic acids and Raman microspectroscopy of human breast tissues at room temperature. Our results confirmed the significant role of unsaturated fatty acids in differentiation of noncancerous and cancerous breast tissues and the role of vibrational spectroscopy in phase transition identification. We have found that vibrational properties are very sensitive indicators to specify phases and phase transitions typical of unsaturated fatty acids at the molecular level. Using Raman spectroscopy we have identified high-temperature, middle-temperature and low-temperature phases of linoleic acid. Results obtained for linoleic acid were compared with parameters characteristic of α and γ phases of oleic acid - the parent compound of polyunsaturated fatty acids.
Lodz University of Technology, Institute of Applied Radiation Chemistry, Laboratory of Laser Molecular Spectroscopy, Wroblewskiego 15, 93-590 Lodz, Poland. brozek@mitr.p.lodz.pl.
Beata
B
Brozek-Pluska
Monika
M
Kopec
Jakub
J
Surmacki
Halina
H
Abramczyk
D001940:Breast / Q000737:chemistry*; D001943:Breast Neoplasms / Q000737:chemistry* / Q000473:pathology; D006801:Humans; D019787:Linoleic Acid / Q000737:chemistry*; D019301:Oleic Acid / Q000737:chemistry*; D044367:Phase Transition; D013059:Spectrum Analysis, Raman; D013696:Temperature; D014732:Vibration
D019301:Oleic Acid; D019787:Linoleic Acid