Oxidative stress in ageing and disease development studied by FT-IR spectroscopy

Publication date: Available online 4 November 2017 Source:Mechanisms of Ageing and Development Author(s): Jane Anastassopoulou, Maria Kyriakidou, Stylianos Kyriazis, Andreas F. Mavrogenis, Vasiliki Mamareli, Ioannis Mamarelis, Marianna Petra, Efthymia Malesiou, Christoforos Kotoulas, Panagiota Kolovou, Emmanouil Koutoulakis, Athina Markouizou, Theophile Theophanides FT-IR spectroscopy was used to investigate the effect of oxidative stress and to approach the mechanism on cancer bone demineralization, aortic valve mineralization and heterotopic ossification on disease development. The FT-IR spectra obtained from paediatric, adult bone and ex vivo irradiated adult healthy bone with a dose of 20Gy were compared with those of healthy bone. The increase of band intensity changes of vasCH2, vsCH2 in the region 3000–2850cm−1 depended on aging, the disease progression and the dose of irradiation. The bands at 3080cm−1 and 1744cm−1, which originate from olefinic terminal bond (v =CH) and ester carbonyl group (vROCO), respectively, indicate the influence of oxidative stress on lipid degradation and peroxidation, respectively. The new bands at about 1690cm−1 and 1516cm−1 denote the presence of β-sheet conformation of the proteins due to the diseases, confirming the increasing amount of lipophilic environment and fibril formation. Comparison of the FT-IR spectra of calcified aortic valve and hip heterotopic ossification with that of normal bones showed that in...
Source: Mechanisms of Ageing and Development - Category: Geriatrics Source Type: research