[Modification of collagen during action light].

In work chemical modification of collagen during action visible spectrum sunlight. These changes of collagen were found to indicate a photodegradation and photooxidation processes in collagen.

[Biochemical and photometric studies of modification of collagen structure under UV radiation].

The influence of UV irradiation (270-380 nm) on the biochemical, fluorescence and colorimetric properties of collagen was studied. The long-term UV irradiation (120 h) was accompanied by the increase of structural stability of collagen to specific and nonspecific proteolytic enzymes, by formation of new additional fluorophore-containing molecules, by the increase in quantity of carbonyl groups in the collagen and by strong changing of the distribution pattern of alkaline hydrolysis products during gel-chromatography. The coordinates of colour of the collagen films are also changed.

[Characteristics of combat disorders in war veterans committed illegal aggressive actions].

peculiarities of battle posttraumatic stress disorder (PTSD) and personal grounds to criminal aggression of 174 veterans of local wars and armed conflicts. It's shown, that the highest probability of accomplishment of socially dangerous actions is at the term of first 3 years after the influence of stress battle factors. More over different PTSD symptoms.

[Some factors of collagen aging factors in vivo and in vitro].

The literature data on different factors of collagen aging, the main connective tissue protein, have been analyzed. Mechanisms of reactions that are involved in both old aging and non-enzymatic course of protein aging are discussed. Factory influencing, non-enzymatic protein glycation during-related pathology and some ways for its inactivation by different substances are reviewed.

[Evaluation of preservation and the collagen structure state in the mummy tissues].

The content and state of collagen in skin, muscle and bone of 2500-year-old Altai mummies were studied. Collagen is the predominant protein in studied tissues of the mummies. High degree of the resistance of collagen to the effect of various proteases (collagenase, pronase, pepsin) and to alkline and acidic hydrolysis suggests on the considerable chemical modification of tissue collagen structures of the mummy.