Open AccessИдентификация Н-связей кальцинированного аортального клапана
Author(s) -
В.И. Иванов-Омский,
К.С. Рутковский,
Н.И. Гуляев,
А.С. Галенко,
С.Г. Ястребов
Publication year - 2019
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2019.18.48233.17792
Subject(s) - hydrogen bond , infrared spectroscopy , spectral line , stenosis , absorption (acoustics) , absorption spectroscopy , materials science , spectroscopy , analytical chemistry (journal) , chemistry , medicine , molecule , cardiology , optics , physics , organic chemistry , chromatography , quantum mechanics , astronomy , composite material
The IR absorption spectra of subendothelial regions of the aortic valve cusps of a patient with calcified aortic stenosis diagnosis were measured by the attenuated total reflectance (ATR) spectroscopy technique in a frequency interval of 2500–3600 cm^–1 and analyzed in comparison to the spectra of healthy human tissues and reference spectra of a pig’s healthy bone and aortic valve. The IR absorption band structure in this spectral region was studied by means of expansion into Gaussian components. The energies of hydrogen bonds (H-bonds) involving O–H groups were estimated. It is established that, among all samples studied, the energy of H-bonds between hydroxyl groups reaches maximum in the bone tissue.