Search results for "GLYCATION END-PRODUCTS"
showing 4 items of 4 documents
Modificētu enzīmu dizains proteīnu deglikācijai
2022
Fruktozila peptīdu oksidāzes, pazīstamas arī kā Amadoriāzes, ir enzīmu saime, kas katalizē fruktozilaminoskābju deglikozilāciju. Šī darba mērķis ir novērtēt termālo stabilitāti un enzimātisko aktivitāti Amadoriāzes enzīma mutantiem, C16 un D02, kurus izstrādāja ārvalstu kolēģi, izmantojot skaitļošanas metodes. Darba gaitā tika veikta veikta ekspresija E. coli šūnās un proteīnu attīrīšana, izmantojot šķīdumu hromatogrāfiju. Tika veikta proteīnu analīze, izmantojot biofizikālu un bioķīmisku analīžu metodes - termiskās nobīdes, cirkulārā dihroisma un enzimātiskās aktivitātes testus. Rezultāti uzrādīja termostabilitātes un viršas punktu palielināšanos abiem mutantiem, enzimātiskās aktivitātes u…
Assessment of age-related skin changes using hyperspectral polarization imaging
2019
Abstract We report a development of hyperspectral polarization imaging approach for assessment of age-related skin changes. The degree of residual polarization is used as a quantitative marker of the age-related pathological malformations. The developed approach in frame of express analysis of the degree of residual polarization in each pixel of the image are shown.
Infrared microspectroscopic determination of collagen cross-links in articular cartilage
2017
Collagen forms an organized network in articular cartilage to give tensile stiffness to the tissue. Due to its long half-life, collagen is susceptible to cross-links caused by advanced glycation end-products. The current standard method for determination of cross-link concentrations in tissues is the destructive high-performance liquid chromatography (HPLC). The aim of this study was to analyze the cross-link concentrations nondestructively from standard unstained histological articular cartilage sections by using Fourier transform infrared (FTIR) microspectroscopy. Half of the bovine articular cartilage samples ( n = 27 ) were treated with threose to increase the collagen cross-linking whi…
Oxidation-Induced Increase In Photoreactivity of Bovine Retinal Lipid Extract
2017
Open access original paper Source : 10th EPR Workshop on Applications of EPR in Biology and Medicine, 2016 in Krakow, POLAND.; International audience; The mammalian retina contains a high level of polyunsaturated fatty acids, including docosahexaenoic acid (22:6) (DHA), which are highly susceptible to oxidation. It has been shown that one of the products of DHA oxidation-carboxyethylpyrrole (CEP), generated in situ, causes modifications of retinal proteins and induces inflammation response in the outer retina. These contributing factors may play a role in the development of age-related macular degeneration (AMD). It is also possible that some of the lipid oxidation products are photoreactiv…