Analysis of proteins and their changes in biological tissues

(EN) Proteins are the important biologically active substances for the organism, their qualitative and quantitative composition determines thein function in the organism. Protein analysis in biological material is an important part of biological and medical research. This dissertation is focused on the optimalization of sample preparation - the biological materials - namely the pre-analytical phase of sample processing and their preparation for their own analases and also introducing new procedures in theie praparation. The conditions of individual analysis approaches were always optimized by means of one- dimensional and two-dimensional gel electrophoresis and mass spectrometry. The obtained results were statistically evaluated and other possible approaches to futher research were outlined. The main biological material studied was human saliva with regard to oral health. Comparative study of human saliva was performed (human saliva obtained from caries-free and caries-susceptible people). The saliva composition of individual fractions was investigated with regard to oral health. The study was carried out to compare differences in the abundances of proteins in the saliva of caries-free and caries-susceptible persons, based on label-free mass spectrometry quantification, and to perform a gender..