[Effect of extracellular matrix components on adhesion of bone marrow multipotent mesenchymal stromal cells to polytetrafluoroethylene].

Search for new bioengineering materials for creation of small-diameter vascular grafts is currently a priority task. One of the promising trends of creating tissue engineering constructions is coating the internal layer of implants made of polytetrafluoroethylene (PTFE) with autologous mesenchymal multipotent stromal cells. In the study we assessed the ability of separate components of the extracellular matrix such as fibronectin, type I collagen and type IV collagen to influence adhesion, proliferation and morphology of mesenchymal multipotent stromal cells being cultured on PTFE. Bone marrow multipotent stromal cells taken from second-passage Wistar rats in the amount of 106 per 1 cm2 were applied onto PTFE. We used the following variants of preliminary treatment of the material prior to seeding: fibronectin with type I collagen, fibronectin with type IV collagen, fibronectin with a mixture of type I and IV collagens, as well as a control group without coating. After six weeks of cell growth on PTFE patches the samples were subjected to fixation in 10% formalin followed by haematoxylin-eosin stain and morphometric assessment of adhered cells by calculation using the software AxioVision (Carl Zeiss), assessing the number of cells, area of the cellular monolayer, dimensions and ratios of the area of separate cells and the area of cellular nuclei. The maximal area of the monolayer from mesenchymal multipotent stromal cells on the PTFE surface was revealed while culturing with a mixture of fibronectin and type I and IV collagens. Cell colonization density while treatment of the synthetic material with mixtures of fibronectin with type I collagen, type IV collagen and type I and IV collagens demonstrated the results exceeding the parameters of the control specimen 5-, 2.5- and 7-fold, respectively. Hence, extracellular matrix components considerably increase enhance adhesion of cells to PTFE, as well as improve formation of a monolayer from mesenchymal multipotent stromal cells.

[Comparative study on the effect of antiatherosclerotic diet enriched with polyunsaturated omega-3 fatty acids of plant and animal origin on the level of natural antibodies against catecholamines in patients with cardiovascular diseases]. / Sravnitel'nyi analiz vliianiia protivoateroskleroticheskikh diet, obogashchennykh PNZhK omega-3 pastitel'nogo i zhivotnogo proiskhozhdeniia na uroven' estestvennykh antitel k katekholaminam u bol'hykh serdechno-sosudistymi zabolevaniiami.

The levels of natural antibodies against catecholamines in 138 patients with cardiovascular diseases was studied and the comparative analysis of influence of antiatherosclerotic diets with different origin of PUFA omega-3 on dynamic of these parameters was made. For the first time discovered universal action of diets with PUFA omega-3 vegetable and animal origin on parameters of humoral immunity: in case of primary excess of norm of the contents of natural antibodies to adrenaline, noradrenaline and dopamine as a result of treatment these parameters were reduced or did not change; and at is primary a low their level--parameters increased in most cases. The greatest immunocorrection effect was rendered by diet, enriched PUFA omega-3 of freshwater fishes fat.

[Effect of anti-atherosclerotic diet with polyunsaturated fatty acids omega-3 from linseed oil on dynamics of natural antibodies to bradykinin and angiotensin II in blood serum of patients with cardiovascular diseases]. / Vliianie protivoateroskleroticheskoi diety s PNZhK omega-3 l'nianogo masla na dinamiku estestvennykh antitel k bradikininu i angiotensinu II v syvorotke krovi bol'nykh serdechno-sosudistymi zabolevaniiami.

The dynamic of natural antibodies against bradykinin and angiotensin II in blood serum was studied in 124 patients with ischemic heart disease, hyperlipidemia and hypertension against a background of usage of basic and modified antiatherosclerotic diet during 4 weeks. Besides favorable influence to a clinical picture of the disease universal normalizing influence of antiatherosclerotic diet with addition of linseed oil, consisting in increase of lowered levels of natural antibodies against bradykinin and angiotensin II and decrease of their contents in blood serum under primary increased concentrations.

[Effect of antiatherosclerotic diet, containing polyunsaturated fatty acids of the omega-3 family from flax oil, on fatty acid composition of cell membranes of patients with ischemic heart disease. Hypertensive disease and hyperlipoproteinemia]. / Vliianie protivoateroskleroticheskoi diety, soderzhashchei polinenasyshchennye zhirnye kisloty semeistva omega-3 l'nianogo masla, bol'nykh ishemischekoi bolezn'iu i giperlipoproteidemiiami.

Use flax oil as a vegetative source of PUFA omega-3 in diet of patients with ischemic heart disease, hyperlipidemia and high blood pressure resulted in positive dynamic of clinical manifestation, blood lipids and coagulograms of the patient. Pronounced influence on membrane lipids of erythrocytes was revealed: significantly increased a quota an linolenic, eicosapentaenic and docosahexaenic PUFA against a background of reducing a level of linoleic acid.